Mercurial > hg > nginx-site
annotate xml/en/docs/njs/reference.xml @ 2630:e203e1106fb2
Removed TextEncoder.prototype.encoding in njs.
author | Yaroslav Zhuravlev <yar@nginx.com> |
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date | Fri, 04 Dec 2020 12:26:13 +0000 |
parents | 0ce45b4edb75 |
children | 7da360f50017 |
rev | line source |
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1 <?xml version="1.0"?> |
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2 |
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3 <!-- |
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4 Copyright (C) Nginx, Inc. |
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5 --> |
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6 |
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7 <!DOCTYPE article SYSTEM "../../../../dtd/article.dtd"> |
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8 |
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9 <article name="Reference" |
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10 link="/en/docs/njs/reference.html" |
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11 lang="en" |
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12 rev="58"> |
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13 |
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14 <section id="summary"> |
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15 |
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16 <para> |
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17 <link doc="index.xml">njs</link> provides objects, methods and properties |
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18 for extending nginx functionality. |
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19 </para> |
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20 |
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21 <para> |
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22 This reference contains only njs specific properties, methods and modules |
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23 not compliant with ECMAScript. |
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24 Definitions of njs properties and methods compliant with ECMAScript |
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25 can be found in |
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26 <link url="http://www.ecma-international.org/ecma-262/">ECMAScript |
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27 specification</link>. |
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28 List of all njs properties and methods can be found in |
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29 <link doc="compatibility.xml">Compatibility</link>. |
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30 </para> |
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31 |
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32 </section> |
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33 |
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34 |
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35 <section id="http_stream" name="nginx objects"> |
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36 |
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37 |
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38 <section id="http" name="HTTP Request"> |
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39 |
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40 <para> |
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41 The HTTP request object is available only in the |
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42 <link doc="../http/ngx_http_js_module.xml">ngx_http_js_module</link> module. |
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43 All string properties of the object are |
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44 <link id="string">byte strings</link>. |
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45 |
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46 <list type="tag"> |
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47 |
2353 | 48 <tag-name id="r_args"><literal>r.args{}</literal></tag-name> |
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49 <tag-desc> |
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50 request arguments object, read-only |
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51 </tag-desc> |
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52 |
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53 <tag-name id="r_error"><literal>r.error(<value>string</value>)</literal></tag-name> |
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54 <tag-desc> |
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55 writes a <literal>string</literal> to the error log |
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56 on the <literal>error</literal> level of logging |
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57 </tag-desc> |
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58 |
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59 <tag-name id="r_finish"><literal>r.finish()</literal></tag-name> |
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60 <tag-desc> |
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61 finishes sending a response to the client |
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62 </tag-desc> |
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63 |
2353 | 64 <tag-name id="r_headers_in"><literal>r.headersIn{}</literal></tag-name> |
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65 <tag-desc> |
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66 incoming headers object, read-only. |
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67 <para> |
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68 The <literal>Foo</literal> request header |
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69 can be accessed with the syntax: |
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70 <literal>headersIn.foo</literal> or <literal>headersIn['Foo']</literal>. |
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71 </para> |
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72 |
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73 <para> |
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74 The |
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75 <header>Authorization</header>, |
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76 <header>Content-Length</header>, |
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77 <header>Content-Range</header>, |
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78 <header>Content-Type</header>, |
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79 <header>ETag</header>, |
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80 <header>Expect</header>, |
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81 <header>From</header>, |
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82 <header>Host</header>, |
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83 <header>If-Match</header>, |
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84 <header>If-Modified-Since</header>, |
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85 <header>If-None-Match</header>, |
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86 <header>If-Range</header>, |
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87 <header>If-Unmodified-Since</header>, |
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88 <header>Max-Forwards</header>, |
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89 <header>Proxy-Authorization</header>, |
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90 <header>Referer</header>, |
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91 <header>Transfer-Encoding</header>, and |
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92 <header>User-Agent</header> |
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93 request headers can have only one field value |
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94 (<link doc="changes.xml" id="njs0.4.1">0.4.1</link>). |
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95 Duplicate field values in <header>Cookie</header> headers |
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96 are separated by semicolon (<literal>;</literal>). |
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97 Duplicate field values in all other request headers are separated by commas. |
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98 </para> |
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99 </tag-desc> |
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100 |
2331 | 101 <tag-name id="r_headers_out"><literal>r.headersOut{}</literal></tag-name> |
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102 <tag-desc> |
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103 outgoing headers object, writable. |
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104 <para> |
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105 The <header>Foo</header> response header |
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106 can be accessed with the syntax: |
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107 <literal>headersOut.foo</literal> or <literal>headersOut['Foo']</literal>. |
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108 </para> |
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109 |
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110 <para> |
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111 Field values of multi-value response headers |
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112 (<link doc="changes.xml" id="njs0.4.0">0.4.0</link>) |
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113 can be set with the syntax: |
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114 <example> |
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115 r.headersOut['Foo'] = ['a', 'b'] |
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116 </example> |
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117 where the output will be: |
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118 <example> |
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119 Foo: a |
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120 Foo: b |
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121 </example> |
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122 All previous field values of the <header>Foo</header> response header |
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123 will be deleted. |
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124 </para> |
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125 |
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126 <para> |
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127 For standard response headers |
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128 that accept only a single field value such as |
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129 <header>Content-Type</header>, |
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130 only the last element of the array will take effect. |
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131 Field values of the <header>Set-Cookie</header> response header |
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132 are always returned as an array. |
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133 Duplicate field values in |
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134 <header>Age</header>, |
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135 <header>Content-Encoding</header>, |
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136 <header>Content-Length</header>, |
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137 <header>Content-Type</header>, |
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138 <header>ETag</header>, |
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139 <header>Expires</header>, |
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140 <header>Last-Modified</header>, |
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141 <header>Location</header>, |
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142 <header>Retry-After</header> |
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143 response headers are ignored. |
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144 Duplicate field values in all other response headers |
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145 are separated by commas. |
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146 </para> |
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147 </tag-desc> |
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148 |
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149 <tag-name id="r_http_version"><literal>r.httpVersion</literal></tag-name> |
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150 <tag-desc> |
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151 HTTP version, read-only |
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152 </tag-desc> |
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153 |
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154 <tag-name id="r_internal_redirect"><literal>r.internalRedirect(<value>uri</value>)</literal></tag-name> |
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155 <tag-desc> |
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156 performs an internal redirect to the specified <literal>uri</literal>. |
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157 If the uri starts with the “<literal>@</literal>” prefix, |
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158 it is considered a named location. |
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159 The actual redirect happens after the handler execution is completed. |
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160 </tag-desc> |
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161 |
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162 <tag-name id="r_log"><literal>r.log(<value>string</value>)</literal></tag-name> |
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163 <tag-desc> |
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164 writes a <literal>string</literal> to the error log |
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165 on the <literal>info</literal> level of logging |
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166 </tag-desc> |
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167 |
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168 <tag-name id="r_method"><literal>r.method</literal></tag-name> |
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169 <tag-desc> |
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170 HTTP method, read-only |
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171 </tag-desc> |
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172 |
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173 <tag-name id="r_parent"><literal>r.parent</literal></tag-name> |
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174 <tag-desc> |
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175 references the parent request object |
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176 </tag-desc> |
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177 |
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178 <tag-name id="r_remote_address"><literal>r.remoteAddress</literal></tag-name> |
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179 <tag-desc> |
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180 client address, read-only |
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181 </tag-desc> |
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182 |
2628 | 183 <tag-name id="r_request_body"><literal>r.requestBody</literal></tag-name> |
184 <tag-desc> | |
185 the property is deprecated since | |
186 <link doc="changes.xml" id="njs0.5.0">0.5.0</link>, | |
187 the <link id="r_request_buffer"><literal>r.requestBuffer</literal></link> or | |
188 <link id="r_request_text"><literal>r.requestText</literal></link> property | |
189 should be used instead. | |
190 </tag-desc> | |
191 | |
192 <tag-name id="r_request_buffer"><literal>r.requestBuffer</literal></tag-name> | |
193 <tag-desc> | |
194 client request body if it has not been written to a temporary file | |
195 (since <link doc="changes.xml" id="njs0.5.0">0.5.0</link>). | |
196 To ensure that the client request body is in memory, | |
197 its size should be limited by | |
198 <link doc="../http/ngx_http_core_module.xml" id="client_max_body_size"/>, | |
199 and a sufficient buffer size should be set using | |
200 <link doc="../http/ngx_http_core_module.xml" id="client_body_buffer_size"/>. | |
201 The property is available only in the | |
202 <link doc="../http/ngx_http_js_module.xml" id="js_content"/> directive. | |
203 </tag-desc> | |
204 | |
205 <tag-name id="r_request_text"><literal>r.requestText</literal></tag-name> | |
206 <tag-desc> | |
207 the same as <link id="r_request_buffer"><literal>r.requestBuffer</literal></link>, | |
208 but returns a <literal>string</literal>. | |
209 Note that | |
210 it may convert bytes invalid in utf8 encoding into the replacement character. | |
211 </tag-desc> | |
212 | |
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213 <tag-name id="r_raw_headers_in"><literal>r.rawHeadersIn{}</literal></tag-name> |
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214 <tag-desc> |
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215 returns an array of key-value pairs |
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216 exactly as they were received from the client |
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217 (<link doc="changes.xml" id="njs0.4.1">0.4.1</link>). |
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218 <para> |
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219 For example, with the following request headers: |
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220 <example> |
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221 Host: localhost |
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222 Foo: bar |
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223 foo: bar2 |
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224 </example> |
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225 the output of <literal>r.rawHeadersIn</literal> will be: |
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226 <example> |
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227 [ |
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228 ['Host', 'localhost'], |
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229 ['Foo', 'bar'], |
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230 ['foo', 'bar2'] |
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231 ] |
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232 </example> |
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233 All <literal>foo</literal> headers |
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234 can be collected with the syntax: |
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235 <example> |
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236 r.rawHeadersIn.filter(v=>v[0].toLowerCase() == 'foo').map(v=>v[1]) |
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237 </example> |
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238 the output will be: |
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239 <example> |
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240 ['bar', 'bar2'] |
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241 </example> |
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242 Header field names are not converted to lower case, |
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243 duplicate field values are not merged. |
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244 </para> |
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245 </tag-desc> |
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246 |
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247 <tag-name id="r_raw_headers_out"><literal>r.rawHeadersOut{}</literal></tag-name> |
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248 <tag-desc> |
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249 returns an array of key-value pairs of response headers |
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250 (<link doc="changes.xml" id="njs0.4.1">0.4.1</link>). |
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251 Header field names are not converted to lower case, |
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252 duplicate field values are not merged. |
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253 </tag-desc> |
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254 |
2628 | 255 <tag-name id="r_response_body"><literal>r.responseBody</literal></tag-name> |
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256 <tag-desc> |
2628 | 257 the property is deprecated since |
258 <link doc="changes.xml" id="njs0.5.0">0.5.0</link>, | |
259 the <link id="r_response_buffer"><literal>r.responseBuffer</literal></link> | |
260 or | |
261 the <link id="r_response_text"><literal>r.responseText</literal></link> | |
262 property | |
263 should be used instead. | |
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264 </tag-desc> |
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265 |
2628 | 266 <tag-name id="r_response_buffer"><literal>r.responseBuffer</literal></tag-name> |
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267 <tag-desc> |
2628 | 268 holds the <link id="r_subrequest">subrequest</link> response body, |
269 read-only | |
270 (since <link doc="changes.xml" id="njs0.5.0">0.5.0</link>). | |
271 The size of <literal>r.responseBuffer</literal> is limited by the | |
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272 <link doc="../http/ngx_http_core_module.xml" id="subrequest_output_buffer_size"/> |
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273 directive. |
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274 </tag-desc> |
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275 |
2628 | 276 <tag-name id="r_response_text"><literal>r.responseText</literal></tag-name> |
277 <tag-desc> | |
278 the same as <link id="r_response_buffer"><literal>r.responseBuffer</literal></link> | |
279 but returns a string | |
280 (since <link doc="changes.xml" id="njs0.5.0">0.5.0</link>). | |
281 Note that | |
282 it may convert bytes invalid in utf8 encoding into the replacement character. | |
283 </tag-desc> | |
284 | |
285 <tag-name id="r_return"><literal>r.return(status[, | |
286 string | Buffer])</literal></tag-name> | |
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287 <tag-desc> |
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288 sends the entire response |
2628 | 289 with the specified <literal>status</literal> to the client. |
290 The response can be a string or Buffer | |
291 (<link doc="changes.xml" id="njs0.5.0">0.5.0</link>). | |
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292 <para> |
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293 It is possible to specify either a redirect URL |
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294 (for codes 301, 302, 303, 307, and 308) |
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295 or the response body text (for other codes) as the second argument |
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296 </para> |
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297 </tag-desc> |
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298 |
2628 | 299 <tag-name id="r_send"><literal>r.send(string |
300 | Buffer)</literal></tag-name> | |
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301 <tag-desc> |
2628 | 302 sends a part of the response body to the client. |
303 The data sent can be a string or Buffer | |
304 (<link doc="changes.xml" id="njs0.5.0">0.5.0</link>) | |
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305 </tag-desc> |
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306 |
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307 <tag-name id="r_send_header"><literal>r.sendHeader()</literal></tag-name> |
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308 <tag-desc> |
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309 sends the HTTP headers to the client |
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310 </tag-desc> |
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311 |
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312 <tag-name id="r_status"><literal>r.status</literal></tag-name> |
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313 <tag-desc> |
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314 status, writable |
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315 </tag-desc> |
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316 |
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317 <tag-name id="r_subrequest"><literal>r.subrequest(<value>uri</value>[, |
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318 <value>options</value>[, <value>callback</value>]])</literal></tag-name> |
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319 <tag-desc> |
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320 creates a subrequest with the given <literal>uri</literal> and |
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321 <literal>options</literal>, and installs |
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322 an optional completion <literal>callback</literal>. |
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323 |
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324 <para> |
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325 A |
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326 <link doc="../dev/development_guide.xml.xml" id="http_subrequests">subrequest</link> |
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327 shares its input headers with the client request. |
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328 To send headers different from original headers to a proxied server, the |
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329 <link doc="../http/ngx_http_proxy_module.xml" id="proxy_set_header"/> |
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330 directive can be used. |
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331 To send a completely new set of headers to a proxied server, the |
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332 <link doc="../http/ngx_http_proxy_module.xml" id="proxy_pass_request_headers"/> |
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333 directive can be used. |
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334 </para> |
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335 |
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336 <para> |
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337 If <literal>options</literal> is a string, then it |
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338 holds the subrequest arguments string. |
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339 Otherwise, <literal>options</literal> is expected to be |
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340 an object with the following keys: |
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341 <list type="tag"> |
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342 <tag-name><literal>args</literal></tag-name> |
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343 <tag-desc> |
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344 arguments string, by default an empty string is used |
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345 </tag-desc> |
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346 <tag-name><literal>body</literal></tag-name> |
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347 <tag-desc> |
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348 request body, |
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349 by default the request body of the parent request object is used |
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350 </tag-desc> |
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351 |
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352 <tag-name><literal>method</literal></tag-name> |
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353 <tag-desc> |
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354 HTTP method, by default the <literal>GET</literal> method is used |
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355 </tag-desc> |
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356 |
2507 | 357 <tag-name><literal>detached</literal></tag-name> |
358 <tag-desc> | |
359 boolean flag (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>), | |
360 if <literal>true</literal>, the created subrequest is a detached subrequest. | |
361 Responses to detached subrequests are ignored. | |
362 Unlike ordinary subrequests, a detached subrequest | |
363 can be created inside a variable handler. | |
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364 The <literal>detached</literal> flag and callback argument |
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365 are mutually exclusive. |
2507 | 366 </tag-desc> |
367 | |
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368 </list> |
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369 </para> |
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370 |
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371 <para> |
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372 The completion <literal>callback</literal> receives |
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373 a subrequest response object with methods and properties |
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374 identical to the parent request object. |
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375 </para> |
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376 |
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377 <para> |
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378 Since <link doc="changes.xml" id="njs0.3.8">0.3.8</link>, |
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379 if a <literal>callback</literal> is not provided, |
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380 the <literal>Promise</literal> object |
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381 that resolves to the subrequest response object is returned. |
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382 </para> |
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383 </tag-desc> |
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384 |
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385 <tag-name id="r_uri"><literal>r.uri</literal></tag-name> |
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386 <tag-desc> |
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387 current <link doc="../http/ngx_http_core_module.xml" id="var_uri">URI</link> |
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388 in request, |
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389 <link doc="../http/ngx_http_core_module.xml" id="location">normalized</link>, |
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390 read-only |
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391 </tag-desc> |
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392 |
2628 | 393 <tag-name id="r_raw_variables"><literal>r.rawVariables{}</literal></tag-name> |
394 <tag-desc> | |
395 nginx <link id="r_variables">variables</link> as Buffers, | |
396 writable | |
397 (since <link doc="changes.xml" id="njs0.5.0">0.5.0</link>) | |
398 </tag-desc> | |
399 | |
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400 <tag-name id="r_variables"><literal>r.variables{}</literal></tag-name> |
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401 <tag-desc> |
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402 nginx variables object, writable |
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403 (since <link doc="changes.xml" id="njs0.2.8">0.2.8</link>) |
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404 </tag-desc> |
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405 |
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406 <tag-name id="r_warn"><literal>r.warn(<value>string</value>)</literal></tag-name> |
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407 <tag-desc> |
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408 writes a <literal>string</literal> to the error log |
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409 on the <literal>warning</literal> level of logging |
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410 </tag-desc> |
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411 |
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412 </list> |
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413 </para> |
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414 |
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415 </section> |
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416 |
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417 |
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418 <section id="stream" name="Stream Session"> |
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419 |
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420 <para> |
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421 The stream session object is available only in the |
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422 <link doc="../stream/ngx_stream_js_module.xml">ngx_stream_js_module</link> |
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423 module. |
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424 All string properties of the object are <link id="string">byte strings</link>. |
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425 </para> |
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426 |
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427 <para> |
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428 <list type="tag"> |
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|
429 |
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430 <tag-name id="s_allow"><literal>s.allow()</literal></tag-name> |
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431 <tag-desc> |
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432 successfully finalizes the phase handler |
2337
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Updated links to changes.xml in njs Reference.
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|
433 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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434 </tag-desc> |
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|
435 |
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|
436 <tag-name id="s_decline"><literal>s.decline()</literal></tag-name> |
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|
437 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
438 finalizes the phase handler and passes control to the next handler |
2337
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Updated links to changes.xml in njs Reference.
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|
439 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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440 </tag-desc> |
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|
441 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
442 <tag-name id="s_deny"><literal>s.deny()</literal></tag-name> |
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Created "nginx objects" section in reference.xml.
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|
443 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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changeset
|
444 finalizes the phase handler with the access error code |
2337
867fe207f13e
Updated links to changes.xml in njs Reference.
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|
445 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
2247
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446 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
447 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
448 <tag-name id="s_done"><literal>s.done</literal>(<value>[code]</value>)</tag-name> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
449 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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changeset
|
450 successfully finalizes the current phase handler |
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Created "nginx objects" section in reference.xml.
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|
451 or finalizes it with the specified numeric code |
2337
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Updated links to changes.xml in njs Reference.
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|
452 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
2247
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453 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
454 |
2570
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Added IDs to methods in njs Reference.
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|
455 <tag-name id="s_error"><literal>s.error(<value>string</value>)</literal></tag-name> |
2247
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|
456 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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changeset
|
457 writes a sent <literal>string</literal> to the error log |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
458 on the <literal>error</literal> level of logging |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
459 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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changeset
|
460 |
2570
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Added IDs to methods in njs Reference.
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changeset
|
461 <tag-name id="s_log"><literal>s.log(<value>string</value>)</literal></tag-name> |
2247
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|
462 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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changeset
|
463 writes a sent <value>string</value> to the error log |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
464 on the <literal>info</literal> level of logging |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
465 </tag-desc> |
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changeset
|
466 |
0f16ef9a8dbe
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changeset
|
467 <tag-name id="s_off"><literal>s.off(<value>eventName</value>)</literal></tag-name> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
468 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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changeset
|
469 unregisters the callback set by the <link id="s_on">s.on()</link> method |
2337
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Updated links to changes.xml in njs Reference.
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changeset
|
470 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
2247
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|
471 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
472 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
473 <tag-name id="s_on"><literal>s.on(<value>event</value>, |
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Created "nginx objects" section in reference.xml.
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|
474 <value>callback</value>)</literal></tag-name> |
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Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
475 <tag-desc> |
2579
63cef7604e0d
Minor review of njs Reference for typos and style.
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|
476 registers a <literal>callback</literal> |
63cef7604e0d
Minor review of njs Reference for typos and style.
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parents:
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|
477 for the specified <literal>event</literal> |
2337
867fe207f13e
Updated links to changes.xml in njs Reference.
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changeset
|
478 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
2247
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|
479 |
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Created "nginx objects" section in reference.xml.
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changeset
|
480 <para> |
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changeset
|
481 An <literal>event</literal> may be one of the following strings: |
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|
482 <list type="tag"> |
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Created "nginx objects" section in reference.xml.
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changeset
|
483 <tag-name><literal>upload</literal></tag-name> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
484 <tag-desc> |
2628 | 485 new data (string) from a client |
2247
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|
486 </tag-desc> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
487 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
488 <tag-name><literal>download</literal></tag-name> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
489 <tag-desc> |
2628 | 490 new data (string) to a client |
491 </tag-desc> | |
492 | |
493 <tag-name><literal>upstream</literal></tag-name> | |
494 <tag-desc> | |
495 new data (Buffer) from a client | |
496 (since <link doc="changes.xml" id="njs0.5.0">0.5.0</link>) | |
497 </tag-desc> | |
498 | |
499 <tag-name><literal>downstream</literal></tag-name> | |
500 <tag-desc> | |
501 new data (Buffer) to a client | |
502 (since <link doc="changes.xml" id="njs0.5.0">0.5.0</link>) | |
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503 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
504 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
505 </list> |
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Created "nginx objects" section in reference.xml.
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changeset
|
506 </para> |
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Created "nginx objects" section in reference.xml.
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changeset
|
507 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
508 <para> |
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Created "nginx objects" section in reference.xml.
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changeset
|
509 The completion callback has the following prototype: |
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Created "nginx objects" section in reference.xml.
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|
510 <literal>callback(data, flags)</literal>, where |
2628 | 511 <literal>data</literal> is string or Buffer (depending on the event type) |
2247
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512 <literal>flags</literal> is an object |
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Created "nginx objects" section in reference.xml.
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|
513 with the following properties: |
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Created "nginx objects" section in reference.xml.
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|
514 <list type="tag"> |
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Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
515 <tag-name id="s_on_callback_last"><literal>last</literal></tag-name> |
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516 <tag-desc> |
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517 a boolean value, true if data is a last buffer. |
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518 </tag-desc> |
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519 |
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520 </list> |
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521 </para> |
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522 </tag-desc> |
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523 |
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524 <tag-name id="s_remote_address"><literal>s.remoteAddress</literal></tag-name> |
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525 <tag-desc> |
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526 client address, read-only |
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527 </tag-desc> |
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528 |
2628 | 529 <tag-name id="s_raw_variables"><literal>s.rawVariables</literal></tag-name> |
530 <tag-desc> | |
531 nginx <link id="s_variables">variables</link> as Buffers, | |
532 writable | |
533 (since <link doc="changes.xml" id="njs0.5.0">0.5.0</link>) | |
534 </tag-desc> | |
535 | |
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536 <tag-name id="s_send"><literal>s.send(<value>data</value>[, |
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537 <value>options</value>])</literal></tag-name> |
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538 <tag-desc> |
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539 sends the data to the client |
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540 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
2628 | 541 The data can be a string or Buffer |
542 (<link doc="changes.xml" id="njs0.5.0">0.5.0</link>). | |
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543 The <literal>options</literal> is an object used |
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544 to override nginx buffer flags derived from an incoming data chunk buffer. |
2579
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545 The flags can be overridden with the following flags: |
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546 <para> |
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547 <list type="tag"> |
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548 |
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549 <tag-name><literal>last</literal></tag-name> |
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550 <tag-desc> |
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551 boolean, |
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552 true if the buffer is the last buffer |
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|
553 </tag-desc> |
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554 |
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555 <tag-name><literal>flush</literal></tag-name> |
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556 <tag-desc> |
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|
557 boolean, |
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|
558 true if the buffer should have the <literal>flush</literal> flag |
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559 </tag-desc> |
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560 </list> |
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561 </para> |
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|
562 The method can be called multiple times per callback invocation. |
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563 </tag-desc> |
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564 |
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565 <tag-name id="s_variables"><literal>s.variables{}</literal></tag-name> |
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566 <tag-desc> |
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567 nginx variables object, writable |
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568 (since <link doc="changes.xml" id="njs0.2.8">0.2.8</link>) |
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569 </tag-desc> |
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570 |
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571 <tag-name id="s_warn"><literal>s.warn(<value>string</value>)</literal></tag-name> |
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572 <tag-desc> |
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573 writes a sent <literal>string</literal> to the error log |
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|
574 on the <literal>warning</literal> level of logging |
0f16ef9a8dbe
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|
575 </tag-desc> |
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|
576 |
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577 </list> |
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|
578 </para> |
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579 |
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|
580 </section> |
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581 |
2628 | 582 |
583 <section id="ngx" name="ngx"> | |
584 | |
585 <para> | |
586 The <literal>ngx</literal> global object is available | |
587 since <link doc="changes.xml" id="njs0.5.0">0.5.0</link>. | |
588 <list type="tag"> | |
589 | |
590 <tag-name id="ngx_log"><literal>ngx.log</literal>(<value>level</value>, | |
591 <value>message</value>)</tag-name> | |
592 <tag-desc> | |
593 Writes a message to the error log with the specified level of logging. | |
594 The <value>level</value> parameter specifies one of the log levels, | |
595 the <value>message</value> parameter can be a string or Buffer. | |
596 The following log levels can be specified: | |
597 <literal>ngx.INFO</literal>, | |
598 <literal>ngx.WARN</literal>, and | |
599 <literal>ngx.ERR</literal>. | |
600 </tag-desc> | |
601 </list> | |
602 </para> | |
603 | |
604 </section> | |
605 | |
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|
606 </section> |
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|
607 |
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|
608 |
2176 | 609 <section id="core" name="Core"> |
610 | |
611 | |
2405
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612 <section id="core_global" name="Global"> |
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613 |
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|
614 |
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|
615 <section id="process" name="Process"> |
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|
616 |
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617 <para> |
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618 The <literal>process</literal> object is a global object |
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619 that provides information about the current process |
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620 (<link doc="changes.xml" id="njs0.3.3">0.3.3</link>). |
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621 </para> |
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|
622 |
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623 <para> |
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624 <list type="tag"> |
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625 |
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626 <tag-name id="process_argv"><literal>process.argv</literal></tag-name> |
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627 <tag-desc> |
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628 Returns an array that contains the command line arguments |
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629 passed when the current process was launched. |
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630 </tag-desc> |
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631 |
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632 <tag-name id="process_env"><literal>process.env</literal></tag-name> |
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633 <tag-desc> |
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634 Returns an object containing the user environment. |
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635 <note> |
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636 By default, nginx removes all environment variables inherited |
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637 from its parent process except the TZ variable. |
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638 Use the <link doc="../ngx_core_module.xml" id="env"/> directive |
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639 to preserve some of the inherited variables. |
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640 </note> |
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641 </tag-desc> |
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642 |
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643 <tag-name id="process_pid"><literal>process.pid</literal></tag-name> |
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644 <tag-desc> |
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645 Returns the PID of the current process. |
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646 </tag-desc> |
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647 |
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648 <tag-name id="process_ppid"><literal>process.ppid</literal></tag-name> |
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649 <tag-desc> |
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650 Returns the PID of the current parent process. |
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651 </tag-desc> |
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652 |
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|
653 </list> |
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|
654 </para> |
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|
655 |
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|
656 </section> |
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657 |
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|
658 </section> |
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659 |
dbf68c949522
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
2394
diff
changeset
|
660 |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
661 <section id="string" name="String"> |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
662 |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
663 <para> |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
664 There are two types of strings in njs: a Unicode string (default) and |
ae56e4613280
Corrected language in njs.
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parents:
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|
665 a byte string. |
2186
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
666 </para> |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
667 |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
668 <para> |
2315
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Corrected language in njs.
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parents:
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diff
changeset
|
669 A Unicode string corresponds to an ECMAScript string |
2186
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Added njs String object.
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changeset
|
670 which contains Unicode characters. |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
671 </para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
672 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
673 <para> |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
674 Byte strings contain a sequence of bytes |
ae56e4613280
Corrected language in njs.
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parents:
2313
diff
changeset
|
675 and are used to serialize Unicode strings |
2186
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
676 to external data and deserialize from external sources. |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
677 For example, the <link id="string_toutf8">toUTF8()</link> method serializes |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
678 a Unicode string to a byte string using UTF8 encoding: |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
679 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
680 >> '£'.toUTF8().toString('hex') |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
681 'c2a3' /* C2 A3 is the UTF8 representation of 00A3 ('£') code point */ |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
682 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
683 The <link id="string_tobytes">toBytes()</link> method serializes |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
684 a Unicode string with code points up to 255 into a byte string, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
685 otherwise, <literal>null</literal> is returned: |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
686 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
687 >> '£'.toBytes().toString('hex') |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
688 'a3' /* a3 is a byte equal to 00A3 ('£') code point */ |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
689 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
690 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
691 <list type="tag"> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
692 |
2211
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
693 <tag-name id="string_bytesfrom"><literal>String.bytesFrom(<value>array</value> |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
694 | <value>string</value>, <value>encoding</value>)</literal></tag-name> |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
695 <tag-desc> |
2569
2edc64c05b0e
Removed ECMAScript methods from njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2564
diff
changeset
|
696 Creates a byte string either from an array that contains octets, |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
697 or from an encoded string |
2337
867fe207f13e
Updated links to changes.xml in njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2332
diff
changeset
|
698 (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
2211
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
699 The encoding can be |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
700 <literal>hex</literal>, |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
701 <literal>base64</literal>, and |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
702 <literal>base64url</literal>. |
2605
0ec1e1b063d7
Deprecated String.bytesFrom method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2604
diff
changeset
|
703 The method is deprecated since |
0ec1e1b063d7
Deprecated String.bytesFrom method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2604
diff
changeset
|
704 <link doc="changes.xml" id="njs0.4.4">0.4.4</link>, |
0ec1e1b063d7
Deprecated String.bytesFrom method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2604
diff
changeset
|
705 the <literal>Buffer.from</literal> method should be used instead: |
2211
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
706 <example> |
2605
0ec1e1b063d7
Deprecated String.bytesFrom method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2604
diff
changeset
|
707 >> Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]).toString() |
2211
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
708 'buffer' |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
709 |
2605
0ec1e1b063d7
Deprecated String.bytesFrom method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2604
diff
changeset
|
710 >> Buffer.from('YnVmZmVy', 'base64').toString() |
2211
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
711 'buffer' |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
712 </example> |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
713 </tag-desc> |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
714 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
715 <tag-name id="string_frombytes"><literal>String.prototype.fromBytes(<value>start</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
716 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
717 <tag-desc> |
2569
2edc64c05b0e
Removed ECMAScript methods from njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2564
diff
changeset
|
718 Returns a new Unicode string from a byte string |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
719 where each byte is replaced with a corresponding Unicode code point. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
720 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
721 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
722 <tag-name id="string_fromutf8"><literal>String.prototype.fromUTF8(<value>start</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
723 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
724 <tag-desc> |
2569
2edc64c05b0e
Removed ECMAScript methods from njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2564
diff
changeset
|
725 Converts a byte string containing a valid UTF8 string |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
726 into a Unicode string, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
727 otherwise <literal>null</literal> is returned. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
728 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
729 |
2579
63cef7604e0d
Minor review of njs Reference for typos and style.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2578
diff
changeset
|
730 <tag-name id="string_tobytes"><literal>String.prototype.toBytes(<value>start</value>[, |
63cef7604e0d
Minor review of njs Reference for typos and style.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2578
diff
changeset
|
731 <value>end</value>])</literal></tag-name> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
732 <tag-desc> |
2569
2edc64c05b0e
Removed ECMAScript methods from njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2564
diff
changeset
|
733 Serializes a Unicode string to a byte string. |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
734 Returns <literal>null</literal> if a character larger than 255 is |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
735 found in the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
736 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
737 |
2582
e162a71453b0
Improved String.prototype.toString() for ordinary strings in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2579
diff
changeset
|
738 <tag-name id="string_tostring"><literal>String.prototype.toString(<value>encoding</value>)</literal></tag-name> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
739 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
740 <para> |
2582
e162a71453b0
Improved String.prototype.toString() for ordinary strings in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2579
diff
changeset
|
741 Encodes a string to |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
742 <literal>hex</literal>, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
743 <literal>base64</literal>, or |
2582
e162a71453b0
Improved String.prototype.toString() for ordinary strings in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2579
diff
changeset
|
744 <literal>base64url</literal>: |
e162a71453b0
Improved String.prototype.toString() for ordinary strings in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2579
diff
changeset
|
745 <example> |
e162a71453b0
Improved String.prototype.toString() for ordinary strings in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2579
diff
changeset
|
746 >> 'αβγδ'.toString('base64url') |
e162a71453b0
Improved String.prototype.toString() for ordinary strings in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2579
diff
changeset
|
747 'zrHOss6zzrQ' |
e162a71453b0
Improved String.prototype.toString() for ordinary strings in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2579
diff
changeset
|
748 </example> |
e162a71453b0
Improved String.prototype.toString() for ordinary strings in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2579
diff
changeset
|
749 Before version <link doc="changes.xml" id="njs0.4.3">0.4.3</link>, |
e162a71453b0
Improved String.prototype.toString() for ordinary strings in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2579
diff
changeset
|
750 only a <link id="string_tobytes">byte string</link> could be encoded: |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
751 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
752 >> 'αβγδ'.toUTF8().toString('base64url') |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
753 'zrHOss6zzrQ' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
754 </example> |
2582
e162a71453b0
Improved String.prototype.toString() for ordinary strings in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2579
diff
changeset
|
755 </para> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
756 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
757 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
758 <tag-name id="string_toutf8"><literal>String.prototype.toUTF8(<value>start</value>[, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
759 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
760 <tag-desc> |
2569
2edc64c05b0e
Removed ECMAScript methods from njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2564
diff
changeset
|
761 Serializes a Unicode string |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
762 to a byte string using UTF8 encoding. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
763 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
764 >> 'αβγδ'.toUTF8().length |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
765 8 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
766 >> 'αβγδ'.length |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
767 4 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
768 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
769 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
770 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
771 </list> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
772 </para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
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|
773 |
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|
774 </section> |
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|
775 |
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diff
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|
776 |
2585
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|
777 <section id="textdecoder" name="Text Decoder"> |
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|
778 |
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|
779 <para> |
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780 The <literal>TextDecoder</literal> |
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781 produces a stream of code points |
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782 from a stream of bytes |
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783 (<link doc="changes.xml" id="njs0.4.3">0.4.3</link>). |
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784 </para> |
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|
785 |
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|
786 <para> |
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787 <list type="tag"> |
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|
788 |
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|
789 <tag-name><literal>TextDecoder([[<value>encoding</value>], |
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790 <value>options</value>])</literal></tag-name> |
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|
791 <tag-desc> |
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|
792 Creates a new <literal>TextDecoder</literal> object |
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793 for specified <literal>encoding</literal>, |
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794 currently, only UTF-8 is supported. |
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795 The <literal>options</literal> is |
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|
796 <literal>TextDecoderOptions</literal> dictionary with the property: |
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|
797 |
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|
798 <list type="tag"> |
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|
799 |
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|
800 <tag-name><literal>fatal</literal></tag-name> |
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801 <tag-desc> |
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|
802 boolean flag indicating if |
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|
803 <link id="textdecoder_decode"><literal>TextDecoder.decode()</literal></link> |
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|
804 must throw the <value>TypeError</value> exception when |
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805 a coding error is found, by default is <literal>false</literal>. |
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806 </tag-desc> |
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|
807 |
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|
808 </list> |
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|
809 </tag-desc> |
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|
810 |
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|
811 <tag-name id="textdecoder_encoding"><literal>TextDecoder.prototype.encoding</literal></tag-name> |
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812 <tag-desc> |
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|
813 Returns a string with the name of the encoding used by |
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814 <link id="textdecoder"><literal>TextDecoder()</literal></link>, |
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815 read-only. |
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816 </tag-desc> |
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|
817 |
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|
818 <tag-name id="textdecoder_fatal"><literal>TextDecoder.prototype.fatal</literal></tag-name> |
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|
819 <tag-desc> |
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820 boolean flag, <literal>true</literal> if |
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821 the error mode is fatal, |
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822 read-only. |
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823 </tag-desc> |
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|
824 |
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825 <tag-name id="textdecoder_ignorebom"><literal>TextDecoder.prototype.ignoreBOM</literal></tag-name> |
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826 <tag-desc> |
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827 boolean flag, <literal>true</literal> if |
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828 the byte order marker is ignored, |
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829 read-only. |
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|
830 </tag-desc> |
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|
831 |
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|
832 <tag-name id="textdecoder_decode"><literal>TextDecoder.prototype.decode(<value>buffer</value>, |
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|
833 [<value>options</value>])</literal></tag-name> |
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|
834 <tag-desc> |
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835 Returns a string with the text |
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836 decoded from the <literal>buffer</literal> by |
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|
837 <link id="textdecoder"><literal>TextDecoder()</literal></link>. |
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838 The buffer can be <literal>ArrayBuffer</literal>. |
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839 The <literal>options</literal> is |
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840 <literal>TextDecodeOptions</literal> dictionary with the property: |
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|
841 |
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|
842 <list type="tag"> |
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|
843 |
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|
844 <tag-name><literal>stream</literal></tag-name> |
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845 <tag-desc> |
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846 boolean flag indicating if |
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|
847 additional data will follow in subsequent calls to <literal>decode()</literal>: |
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|
848 <literal>true</literal> if processing the data in chunks, and |
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|
849 <literal>false</literal> for the final chunk |
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850 or if the data is not chunked. |
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851 By default is <literal>false</literal>. |
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852 </tag-desc> |
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|
853 |
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|
854 </list> |
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|
855 <example> |
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856 >> (new TextDecoder()).decode(new Uint8Array([206,177,206,178])) |
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|
857 αβ |
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|
858 </example> |
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859 </tag-desc> |
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|
860 |
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|
861 </list> |
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862 </para> |
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|
863 |
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|
864 </section> |
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865 |
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|
866 |
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|
867 <section id="textencoder" name="Text Encoder"> |
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868 |
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|
869 <para> |
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|
870 The <literal>TextEncoder</literal> object |
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871 produces a byte stream with UTF-8 encoding |
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872 from a stream of code points |
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873 (<link doc="changes.xml" id="njs0.4.3">0.4.3</link>). |
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874 </para> |
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|
875 |
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|
876 <para> |
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877 <list type="tag"> |
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|
878 |
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|
879 <tag-name><literal>TextEncoder()</literal></tag-name> |
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|
880 <tag-desc> |
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881 Returns a newly constructed <literal>TextEncoder</literal> |
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|
882 that will generate a byte stream with UTF-8 encoding. |
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|
883 </tag-desc> |
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|
884 |
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|
885 <tag-name id="textencoder_encode"><literal>TextEncoder.prototype.encode(<value>string</value>)</literal></tag-name> |
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886 <tag-desc> |
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|
887 Encodes <literal>string</literal> into a <literal>Uint8Array</literal> |
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|
888 with UTF-8 encoded text. |
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889 </tag-desc> |
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|
890 |
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891 <tag-name id="textencoder_encodeinto"><literal>TextEncoder.prototype.encodeInto(<value>string</value>, |
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|
892 <value>uint8Array</value>)</literal></tag-name> |
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893 <tag-desc> |
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894 Encodes a <literal>string</literal> to UTF-8, |
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|
895 puts the result into destination <literal>Uint8Array</literal>, and |
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|
896 returns a dictionary object that shows the progress of the encoding. |
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|
897 The dictionary object contains two members: |
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|
898 |
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|
899 <list type="tag"> |
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|
900 |
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|
901 <tag-name><literal>read</literal></tag-name> |
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|
902 <tag-desc> |
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|
903 the number of UTF-16 units of code from the source <literal>string</literal> |
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|
904 converted to UTF-8 |
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|
905 </tag-desc> |
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|
906 |
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|
907 <tag-name><literal>written</literal></tag-name> |
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|
908 <tag-desc> |
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|
909 the number of bytes modified in the destination <literal>Uint8Array</literal> |
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|
910 </tag-desc> |
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|
911 |
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|
912 </list> |
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|
913 </tag-desc> |
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|
914 |
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|
915 </list> |
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|
916 </para> |
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|
917 |
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|
918 </section> |
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|
919 |
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|
920 |
2578
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|
921 <section id="njs_api_timers" name="Timers"> |
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|
922 |
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|
923 <para> |
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|
924 <list type="tag"> |
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|
925 |
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|
926 <tag-name id="cleartimeout"><literal>clearTimeout(<value>timeout</value>)</literal></tag-name> |
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|
927 <tag-desc> |
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|
928 Cancels a <literal>timeout</literal> object |
2579
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|
929 created by <link id="settimeout"><literal>setTimeout()</literal></link>. |
2578
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|
930 </tag-desc> |
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|
931 |
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|
932 <tag-name id="settimeout"><literal>setTimeout(<value>function</value>, |
2579
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|
933 <value>milliseconds</value>[, |
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|
934 <value>argument1</value>, |
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|
935 <value>argumentN</value>])</literal></tag-name> |
2578
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|
936 <tag-desc> |
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|
937 Calls a <literal>function</literal> |
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|
938 after a specified number of <literal>milliseconds</literal>. |
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|
939 One or more optional <literal>arguments</literal> |
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|
940 can be passed to the specified function. |
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|
941 Returns a <literal>timeout</literal> object. |
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|
942 <example> |
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|
943 function handler(v) |
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|
944 { |
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|
945 // ... |
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|
946 } |
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|
947 |
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|
948 t = setTimeout(handler, 12); |
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|
949 |
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|
950 // ... |
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|
951 |
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|
952 clearTimeout(t); |
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|
953 </example> |
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|
954 </tag-desc> |
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|
955 |
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|
956 </list> |
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|
957 </para> |
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|
958 |
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|
959 </section> |
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|
960 |
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|
961 </section> |
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|
962 |
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|
963 |
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|
964 <section id="built-in" name="Built-in Modules"> |
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|
965 |
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|
966 |
2609
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|
967 <section id="buffer" name="Buffer"> |
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|
968 |
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|
969 <para> |
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|
970 <list type="tag"> |
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|
971 |
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|
972 <tag-name id="buffer_alloc"><literal>Buffer.alloc(<value>size</value>[, |
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|
973 <value>fill</value>[, |
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|
974 <value>encoding</value>]]))</literal></tag-name> |
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|
975 <tag-desc> |
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|
976 <para> |
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|
977 Allocates a new Buffer of a specified <value>size</value>. |
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|
978 If <value>fill</value> is not specified, the Buffer will be zero-filled. |
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|
979 If <value>fill</value> is specified, |
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980 the allocated Buffer will be initialized by calling |
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|
981 <link id="buf_fill"><literal>buf.fill(fill)</literal></link>. |
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|
982 If <value>fill</value> and <value>encoding</value> are specified, |
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|
983 the allocated Buffer will be initialized by calling |
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|
984 <link id="buf_fill"><literal>buf.fill(fill, |
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|
985 encoding)</literal></link>. |
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|
986 </para> |
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|
987 |
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|
988 <para> |
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|
989 The <value>fill</value> parameter may be a |
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|
990 <value>string</value>, |
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|
991 <value>Buffer</value>, |
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|
992 <value>Uint8Array</value>, or |
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|
993 <value>integer</value>. |
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|
994 </para> |
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|
995 </tag-desc> |
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|
996 |
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|
997 <tag-name id="buffer_alloc_unsafe"><literal>Buffer.allocUnsafe(<value>size</value>)</literal></tag-name> |
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|
998 <tag-desc> |
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|
999 <para> |
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|
1000 The same as |
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|
1001 <link id="buffer_alloc"><literal>Buffer.alloc()</literal></link>, |
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|
1002 with the difference that the memory allocated for the buffer is not initialized, |
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|
1003 the contents of the new buffer is unknown and may contain sensitive data. |
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|
1004 </para> |
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|
1005 </tag-desc> |
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|
1006 |
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|
1007 <tag-name id="buffer_bytelength"><literal>Buffer.byteLength(<value>value</value>[, |
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|
1008 <value>encoding</value>])</literal></tag-name> |
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|
1009 <tag-desc> |
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|
1010 Returns the byte length of a specified value, |
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1011 when encoded using <value>encoding</value>. |
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1012 The value can be a |
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|
1013 <literal>string</literal>, |
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|
1014 <literal>Buffer</literal>, |
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|
1015 <literal>TypedArray</literal>, |
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|
1016 <literal>DataView</literal>, or |
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|
1017 <literal>ArrayBuffer</literal>. |
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|
1018 If the value is a <value>string</value>, |
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|
1019 the <literal>encoding</literal> parameter is its encoding, can be |
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|
1020 <value>utf-8</value>, |
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|
1021 <value>hex</value>, |
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|
1022 <value>base64</value>, |
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|
1023 <value>base64url</value>; |
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|
1024 by default is <value>utf-8</value>. |
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|
1025 </tag-desc> |
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|
1026 |
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|
1027 <tag-name id="buffer_compare"><literal>Buffer.compare(<value>buffer1</value>, |
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|
1028 <value>buffer2</value>)</literal></tag-name> |
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|
1029 <tag-desc> |
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|
1030 Compares <value>buffer1</value> with <value>buffer2</value> |
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|
1031 when sorting arrays of Buffer instances. |
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|
1032 Returns |
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|
1033 <literal>0</literal> if |
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|
1034 <value>buffer1</value> is the same as <value>buffer2</value>, |
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|
1035 <literal>1</literal> if |
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|
1036 <value>buffer2</value> should come before <value>buffer1</value> when sorted, or |
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|
1037 <literal>-1</literal> if |
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|
1038 <value>buffer2</value> should come after <value>buffer1</value> when sorted. |
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|
1039 </tag-desc> |
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|
1040 |
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|
1041 <tag-name id="buffer_concat"><literal>Buffer.concat(<value>list</value>[, |
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|
1042 <value>totalLength</value>])</literal></tag-name> |
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|
1043 <tag-desc> |
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|
1044 Returns a new Buffer |
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|
1045 which is the result of concatenating all the Buffer instances in the list. |
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|
1046 If there are no items in the list or the total length is 0, |
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|
1047 a new zero-length Buffer is returned. |
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|
1048 If <value>totalLength</value> is not specified, |
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|
1049 it is calculated from the Buffer instances in list by adding their lengths. |
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|
1050 If <value>totalLength</value> is specified, |
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|
1051 it is coerced to an unsigned integer. |
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|
1052 If the combined length of the Buffers in list exceeds |
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|
1053 <value>totalLength</value>, |
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|
1054 the result is truncated to <value>totalLength</value>. |
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|
1055 </tag-desc> |
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|
1056 |
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|
1057 <tag-name id="buffer_from_array"><literal>Buffer.from(<value>array</value>)</literal></tag-name> |
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|
1058 <tag-desc> |
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|
1059 Allocates a new Buffer using an array of bytes |
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|
1060 in the range <literal>0</literal> – <literal>255</literal>. |
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1061 Array entries outside that range will be truncated. |
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1062 </tag-desc> |
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|
1063 |
2612
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|
1064 <tag-name id="buffer_from_arraybuffer"><literal>Buffer.from(<value>arrayBuffer</value>, |
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|
1065 <value>byteOffset</value>[, |
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|
1066 <value>length</value>]])</literal></tag-name> |
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|
1067 <tag-desc> |
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|
1068 Creates a view of the <value>ArrayBuffer</value> |
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|
1069 without copying the underlying memory. |
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|
1070 The optional <value>byteOffset</value> and <value>length</value> arguments |
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1071 specify a memory range within the <value>arrayBuffer</value> |
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|
1072 that will be shared by the Buffer. |
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|
1073 </tag-desc> |
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|
1074 |
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|
1075 <tag-name id="buffer_from_buffer"><literal>Buffer.from(<value>buffer</value>)</literal></tag-name> |
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|
1076 <tag-desc> |
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1077 Copies the passed buffer data onto a new Buffer instance. |
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1078 </tag-desc> |
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|
1079 |
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1080 <tag-name id="buffer_from_object"><literal>Buffer.from(<value>object</value>[, |
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|
1081 <value>offsetOrEncoding</value>[, |
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|
1082 <value>length</value>]])</literal></tag-name> |
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1083 <tag-desc> |
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|
1084 For objects whose <literal>valueOf()</literal> function |
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|
1085 returns a value not strictly equal to object, |
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|
1086 returns |
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|
1087 <literal>Buffer.from(object.valueOf()</literal>, |
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|
1088 <literal>offsetOrEncoding</literal>, |
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1089 <literal>length</literal>). |
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|
1090 </tag-desc> |
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|
1091 |
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1092 <tag-name id="buffer_from_string"><literal>Buffer.from(<value>string</value>[, |
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1093 <value>encoding</value>])</literal></tag-name> |
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1094 <tag-desc> |
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1095 Creates a new Buffer with a <value>string</value>. |
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1096 The <value>encoding</value> parameter identifies the character encoding |
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1097 to be used when converting a string into bytes. |
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1098 The encoding can be |
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1099 <literal>utf-8</literal>, |
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1100 <literal>hex</literal>, |
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1101 <literal>base64</literal>, |
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|
1102 <literal>base64url</literal>; |
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1103 by default is <literal>utf-8</literal>. |
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1104 </tag-desc> |
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1105 |
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1106 <tag-name id="buffer_is_buffer"><literal>Buffer.isBuffer(<value>object</value>)</literal></tag-name> |
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1107 <tag-desc> |
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1108 A boolean value, |
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1109 returns <literal>true</literal> if <value>object</value> is a Buffer. |
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1110 </tag-desc> |
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1111 |
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1112 <tag-name id="buffer_is_encoding"><literal>Buffer.isEncoding(<value>encoding</value>)</literal></tag-name> |
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1113 <tag-desc> |
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1114 A boolean value, |
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1115 returns <literal>true</literal> |
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|
1116 if encoding is the name of a supported character encoding. |
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1117 </tag-desc> |
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|
1118 |
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|
1119 <tag-name id="buf_index"><literal>buffer[<value>index</value>]</literal></tag-name> |
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1120 <tag-desc> |
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1121 The index operator <value>index</value> |
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|
1122 can be used to get and set the octet at position index in |
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|
1123 <literal>buffer</literal>. |
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|
1124 The values refer to individual bytes, |
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|
1125 so the legal value range is between 0 and 255 (decimal). |
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|
1126 </tag-desc> |
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|
1127 |
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|
1128 <tag-name id="buf_buffer"><literal>buf.buffer</literal></tag-name> |
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|
1129 <tag-desc> |
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|
1130 The underlying <literal>ArrayBuffer</literal> object |
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|
1131 based on which this Buffer object is created. |
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|
1132 </tag-desc> |
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|
1133 |
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|
1134 <tag-name id="buf_byte_offset"><literal>buf.byteOffset</literal></tag-name> |
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|
1135 <tag-desc> |
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|
1136 An integer, |
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|
1137 specifying the <literal>byteOffset</literal> of the Buffers |
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|
1138 underlying <literal>ArrayBuffer</literal> object. |
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|
1139 </tag-desc> |
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|
1140 |
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|
1141 <tag-name id="buf_compare"><literal>buf.compare(<value>target</value>[, |
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|
1142 <value>targetStart</value>[, |
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|
1143 <value>targetEnd</value>[, |
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|
1144 <value>sourceStart</value>[, |
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|
1145 <value>sourceEnd</value>]]]])</literal></tag-name> |
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|
1146 <tag-desc> |
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|
1147 Compares buffer with target and returns a number |
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|
1148 indicating whether buffer comes before, after, or is the same |
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|
1149 as target in sort order. |
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|
1150 Comparison is based on the actual sequence of bytes in each Buffer. |
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|
1151 The <literal>targetStart</literal> is an integer specifying the offset |
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|
1152 within target at which to begin comparison, |
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|
1153 by default is 0. |
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|
1154 The <literal>targetEnd</literal> is an integer specifying the offset |
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|
1155 within target at which to end comparison, |
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|
1156 by default is <literal>target.length</literal>. |
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|
1157 The <literal>sourceStart</literal> is an integer specifying the offset |
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|
1158 within buffer at which to begin comparison, |
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|
1159 by default is 0. |
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|
1160 The <literal>sourceEnd</literal> is an integer specifying the offset |
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|
1161 within buffer at which to end comparison (not inclusive), |
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|
1162 by default is <literal>buf.length</literal>. |
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|
1163 </tag-desc> |
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|
1164 |
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|
1165 <tag-name id="buf_copy"><literal>buf.copy(<value>target</value>[, |
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|
1166 <value>targetStart</value>[, |
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|
1167 <value>sourceStart</value>[, |
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|
1168 <value>sourceEnd</value>]]])</literal></tag-name> |
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|
1169 <tag-desc> |
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|
1170 Copies data from a region of buffer to a region in target, |
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|
1171 even if the target memory region overlaps with buffer. |
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|
1172 The <literal>target</literal> parameter is a |
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|
1173 <value>Buffer</value> or <value>Uint8Array</value> to copy into. |
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|
1174 |
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|
1175 <para> |
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|
1176 The <literal>targetStart</literal> is an integer specifying the offset |
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|
1177 within target at which to begin writing, |
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|
1178 by default is 0. |
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|
1179 The <literal>sourceStart</literal> is an integer specifying the offset |
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|
1180 within buffer from which to begin copying, |
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|
1181 by default is 0. |
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|
1182 The <literal>sourceEnd</literal> is an integer specifying the offset |
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|
1183 within buffer at which to stop copying (not inclusive) |
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|
1184 by default is <value>buf.length</value>. |
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|
1185 </para> |
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|
1186 </tag-desc> |
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|
1187 |
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|
1188 <tag-name id="buf_equals"><literal>buf.equals(<value>otherBuffer</value>)</literal></tag-name> |
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|
1189 <tag-desc> |
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|
1190 A boolean value, |
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|
1191 returns <literal>true</literal> if both Buffer and <value>otherBuffer</value> |
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|
1192 have exactly the same bytes. |
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|
1193 </tag-desc> |
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|
1194 |
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|
1195 <tag-name id="buf_fill"><literal>buf.fill(<value>value</value>[, |
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|
1196 <value>offset</value>[, |
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|
1197 <value>end</value>]][, |
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|
1198 <value>encoding</value>])</literal></tag-name> |
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|
1199 <tag-desc> |
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|
1200 Fills the Buffer with the specified <value>value</value>. |
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|
1201 If the <value>offset</value> and <value>end</value> are not specified, |
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|
1202 the entire Buffer will be filled. |
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|
1203 The <value>value</value> is coerced to <value>uint32</value> if it is not a |
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|
1204 <literal>string</literal>, |
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|
1205 <literal>Buffer</literal>, or |
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|
1206 <literal>integer</literal>. |
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|
1207 If the resulting integer is greater than 255, |
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|
1208 the Buffer will be filled with <value>value</value> and 255. |
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|
1209 </tag-desc> |
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|
1210 |
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|
1211 <tag-name id="buf_includes"><literal>buf.includes(<value>value</value>[, |
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|
1212 <value>byteOffset</value>][, |
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|
1213 <value>encoding</value>])</literal></tag-name> |
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|
1214 <tag-desc> |
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|
1215 Equivalent to |
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|
1216 <link id="buf_indexof"><literal>buf.indexOf()</literal></link> |
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|
1217 <literal>!== -1</literal>, |
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|
1218 returns <literal>true</literal> if the <value>value</value> was found |
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|
1219 in Buffer. |
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|
1220 </tag-desc> |
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|
1221 |
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|
1222 <tag-name id="buf_indexof"><literal>buf.indexOf(<value>value</value>[, |
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|
1223 <value>byteOffset</value>][, |
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|
1224 <value>encoding</value>])</literal></tag-name> |
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|
1225 <tag-desc> |
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|
1226 Returns an integer which is the index of the first occurrence of |
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|
1227 <value>value</value> in Buffer, or <value>-1</value> |
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|
1228 if Buffer does not contain value. |
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|
1229 The <value>value</value> can be a |
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|
1230 <literal>string</literal> with specified <value>encoding</value> |
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|
1231 (by default <value>utf-8</value>), |
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|
1232 <literal>Buffer</literal>, |
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|
1233 <literal>Unit8Array</literal>, |
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|
1234 or a number between 0 and 255. |
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|
1235 </tag-desc> |
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|
1236 |
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changeset
|
1237 <tag-name id="buf_lastindexof"><literal>buf.lastIndexOf(<value>value</value>[, |
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|
1238 <value>byteOffset</value>][, |
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|
1239 <value>encoding</value>])</literal></tag-name> |
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|
1240 <tag-desc> |
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changeset
|
1241 The same as |
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changeset
|
1242 <link id="buf_indexof"><literal>buf.indexOf()</literal></link>, |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1243 except the last occurrence of the <value>value</value> is found |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1244 instead of the first occurrence. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1245 The <value>value</value> can be a string, Buffer, or |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1246 integer between 1 and 255. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1247 If the <value>value</value> is an empty string or empty Buffer, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1248 <literal>byteOffset</literal> will be returned. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1249 </tag-desc> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1250 |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1251 <tag-name id="buf_length"><literal>buf.length</literal></tag-name> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1252 <tag-desc> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1253 Returns the number of bytes in Buffer. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1254 </tag-desc> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1255 |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1256 <tag-name id="buf_readintbe"><literal>buf.readIntBE(<value>offset</value>, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1257 <value>byteLength</value>)</literal></tag-name> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1258 <tag-desc> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1259 Reads the <value>byteLength</value> from <literal>buf</literal> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1260 at the specified <value>offset</value> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1261 and interprets the result as a big-endian, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1262 two's complement signed value supporting up to 48 bits of accuracy. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1263 The <value>byteLength</value> parameter is an integer between 1 and 6 |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1264 specifying the number of bytes to read. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1265 <para> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1266 The similar methods are also supported: |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1267 <literal>buf.readInt8([offset])</literal>, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1268 <literal>buf.readInt16BE([offset])</literal>, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1269 <literal>buf.readInt32BE([offset])</literal>. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1270 </para> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1271 </tag-desc> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1272 |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1273 <tag-name id="buf_readintle"><literal>buf.readIntLE(<value>offset</value>, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1274 <value>byteLength</value>)</literal></tag-name> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1275 <tag-desc> |
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Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1276 Reads the <value>byteLength</value> from <literal>buf</literal> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1277 at the specified <value>offset</value> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1278 and interprets the result as a little-endian, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1279 two's complement signed value supporting up to 48 bits of accuracy. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1280 The <value>byteLength</value> parameter is an integer between 1 and 6 |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1281 specifying the number of bytes to read. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1282 <para> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1283 The similar methods are also supported: |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1284 <literal>buf.readInt8([offset])</literal>, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1285 <literal>buf.readInt16LE([offset])</literal>, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1286 <literal>buf.readInt32LE([offset])</literal>. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1287 </para> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1288 </tag-desc> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1289 |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1290 <tag-name id="buf_readuintbe"><literal>buf.readUIntBE(<value>offset</value>, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1291 <value>byteLength</value>)</literal></tag-name> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1292 <tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1293 Reads the <value>byteLength</value> from <literal>buf</literal> |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1294 at the specified <value>offset</value> |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1295 and interprets the result as a big-endian |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1296 integer supporting up to 48 bits of accuracy. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1297 The <value>byteLength</value> parameter is an integer between 1 and 6 |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1298 specifying the number of bytes to read. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1299 <para> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1300 The similar methods are also supported: |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1301 <literal>buf.readUInt8([offset])</literal>, |
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Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1302 <literal>buf.readUInt16BE([offset])</literal>, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1303 <literal>buf.readUInt32BE([offset])</literal>. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1304 </para> |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1305 </tag-desc> |
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Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1306 |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1307 <tag-name id="buf_readuintle"><literal>buf.readUIntLE(<value>offset</value>, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1308 <value>byteLength</value>)</literal></tag-name> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1309 <tag-desc> |
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Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1310 Reads the <value>byteLength</value> from <literal>buf</literal> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1311 at the specified <value>offset</value> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1312 and interprets the result as a little-endian |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1313 integer supporting up to 48 bits of accuracy. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1314 The <value>byteLength</value> parameter is an integer between 1 and 6 |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1315 specifying the number of bytes to read. |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
changeset
|
1316 <para> |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1317 The similar methods are also supported: |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
changeset
|
1318 <literal>buf.readUInt8([offset])</literal>, |
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Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1319 <literal>buf.readUInt16LE([offset])</literal>, |
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Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1320 <literal>buf.readUInt32LE([offset])</literal>. |
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Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1321 </para> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1322 </tag-desc> |
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|
1323 |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1324 <tag-name id="buf_readdobulebe"><literal>buf.readDoubleBE</literal>([<value>offset</value>])</tag-name> |
99bd2ae8d2be
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|
1325 <tag-desc> |
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parents:
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changeset
|
1326 Reads a 64-bit, big-endian double from <literal>buf</literal> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1327 at the specified <value>offset</value>. |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1328 </tag-desc> |
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changeset
|
1329 |
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changeset
|
1330 <tag-name id="buf_readdobulele"><literal>buf.readDoubleLE</literal>([<value>offset</value>])</tag-name> |
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|
1331 <tag-desc> |
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changeset
|
1332 Reads a 64-bit, little-endian double from <literal>buf</literal> |
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parents:
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|
1333 at the specified <value>offset</value>. |
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changeset
|
1334 </tag-desc> |
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|
1335 |
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changeset
|
1336 <tag-name id="buf_readfloatbe"><literal>buf.readFloatBE</literal>([<value>offset</value>])</tag-name> |
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|
1337 <tag-desc> |
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changeset
|
1338 Reads a 32-bit, big-endian float from <literal>buf</literal> |
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parents:
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|
1339 at the specified <value>offset</value>. |
99bd2ae8d2be
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|
1340 </tag-desc> |
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changeset
|
1341 |
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changeset
|
1342 <tag-name id="buf_readfloatle"><literal>buf.readFloatLE</literal>([<value>offset</value>])</tag-name> |
99bd2ae8d2be
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|
1343 <tag-desc> |
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changeset
|
1344 Reads a 32-bit, little-endian float from <literal>buf</literal> |
99bd2ae8d2be
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parents:
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changeset
|
1345 at the specified <value>offset</value>. |
99bd2ae8d2be
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parents:
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changeset
|
1346 </tag-desc> |
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changeset
|
1347 |
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changeset
|
1348 <tag-name id="buf_subarray"><literal>buf.subarray[<value>start</value>[, |
99bd2ae8d2be
Added Buffer to njs Reference.
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parents:
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diff
changeset
|
1349 <value>end</value>]])</literal></tag-name> |
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parents:
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changeset
|
1350 <tag-desc> |
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parents:
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changeset
|
1351 Returns a new <literal>buf</literal> |
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parents:
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diff
changeset
|
1352 that references the same memory as the original, |
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parents:
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diff
changeset
|
1353 but offset and cropped by |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1354 <value>start</value> and <value>end</value>. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1355 If <value>end</value> is greater than |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1356 <link id="buf_length"><literal>buf.length</literal></link>, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1357 the same result as that of end equal to |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1358 <link id="buf_length"><literal>buf.length</literal></link> |
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|
1359 is returned. |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1360 </tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
1361 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1362 <tag-name id="buf_slice"><literal>buf.slice[<value>start</value>[, |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1363 <value>end</value>]])</literal></tag-name> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1364 <tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1365 Returns a new <literal>buf</literal> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1366 that references the same memory as the original, |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1367 but offset and cropped by the |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1368 <value>start</value> and <value>end</value> values. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1369 The method is not compatible with the |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1370 <literal>Uint8Array.prototype.slice()</literal>, |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1371 which is a superclass of Buffer. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1372 To copy the slice, use |
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Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1373 <literal>Uint8Array.prototype.slice()</literal>. |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1374 </tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1375 |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1376 <tag-name id="buf_swap16"><literal>buf.swap16</literal>()</tag-name> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1377 <tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1378 Interprets <literal>buf</literal> as an array of unsigned 16-bit numbers |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1379 and swaps the byte order in-place. |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1380 Throws an error if |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1381 <link id="buf_length"><literal>buf.length</literal></link> |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1382 is not a multiple of 2. |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
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|
1383 </tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1384 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1385 <tag-name id="buf_swap32"><literal>buf.swap32</literal>()</tag-name> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1386 <tag-desc> |
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parents:
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|
1387 Interprets <literal>buf</literal> as an array of unsigned 32-bit numbers |
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parents:
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|
1388 and swaps the byte order in-place. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1389 Throws an error if |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1390 <link id="buf_length"><literal>buf.length</literal></link> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1391 is not a multiple of 4. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2605
diff
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|
1392 </tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1393 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1394 <tag-name id="buf_swap64"><literal>buf.swap64</literal>()</tag-name> |
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|
1395 <tag-desc> |
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parents:
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|
1396 Interprets <literal>buf</literal> as an array of 64-bit numbers |
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parents:
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|
1397 and swaps byte order in-place. |
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parents:
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|
1398 Throws an error if |
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parents:
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diff
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|
1399 <link id="buf_length"><literal>buf.length</literal></link> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1400 is not a multiple of 8. |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1401 </tag-desc> |
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Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1402 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1403 <tag-name id="buf_tojson"><literal>buf.toJSON</literal>()</tag-name> |
99bd2ae8d2be
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1404 <tag-desc> |
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parents:
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|
1405 Returns a JSON representation of <literal>buf.</literal> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1406 <literal>JSON.stringify()</literal> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1407 implicitly calls this function when stringifying a Buffer instance. |
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parents:
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|
1408 </tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1409 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1410 <tag-name id="buf_tostring"><literal>buf.toString([<value>encoding</value>[, |
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parents:
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|
1411 <value>start</value>[, |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1412 <value>end</value>]]])</literal></tag-name> |
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|
1413 <tag-desc> |
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parents:
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|
1414 Decodes <literal>buf</literal> to a string |
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parents:
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|
1415 according to the specified character <value>encoding</value>. |
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parents:
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|
1416 which can be <value>utf-8</value>, |
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parents:
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|
1417 <value>hex</value>, |
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parents:
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|
1418 <value>base64</value>, |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1419 <value>base64url</value>. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1420 The <value>start</value> and <value>end</value> parameters |
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parents:
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|
1421 may be passed to decode only a subset of Buffer. |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1422 </tag-desc> |
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|
1423 |
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Yaroslav Zhuravlev <yar@nginx.com>
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changeset
|
1424 <tag-name id="buf_write"><literal>buf.write(<value>string</value>[, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1425 <value>offset</value>[, |
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Added Buffer to njs Reference.
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parents:
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diff
changeset
|
1426 <value>length</value>]][, |
99bd2ae8d2be
Added Buffer to njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1427 <value>encoding</value>])</literal></tag-name> |
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|
1428 <tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1429 Writes a <value>string</value> to <literal>buf</literal> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1430 at <value>offset</value> |
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parents:
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changeset
|
1431 according to the character <value>encoding</value>. |
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parents:
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|
1432 The <value>length</value> parameter is the number of bytes to write. |
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parents:
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changeset
|
1433 If Buffer did not contain enough space to fit the entire string, |
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parents:
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changeset
|
1434 only part of string will be written, |
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parents:
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changeset
|
1435 however, partially encoded characters will not be written. |
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parents:
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|
1436 The <value>encoding</value> can be |
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parents:
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changeset
|
1437 <value>utf-8</value>, |
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parents:
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|
1438 <value>hex</value>, |
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parents:
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|
1439 <value>base64</value>, |
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parents:
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|
1440 <value>base64url</value>. |
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|
1441 </tag-desc> |
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|
1442 |
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|
1443 <tag-name id="buf_writeintbe"><literal>buf.writeIntBE(<value>value</value>, |
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|
1444 <value>offset</value>, |
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parents:
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|
1445 <value>byteLength</value>)</literal></tag-name> |
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|
1446 <tag-desc> |
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changeset
|
1447 Writes <value>byteLength</value> bytes of <value>value</value> |
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changeset
|
1448 to <literal>buf</literal> |
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|
1449 at the specified <value>offset</value> as big-endian. |
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|
1450 Supports up to 48 bits of accuracy. |
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|
1451 The <value>byteLength</value> parameter is an integer between 1 and 6 |
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changeset
|
1452 specifying the number of bytes to read. |
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|
1453 <para> |
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changeset
|
1454 The following similar methods are also supported: |
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|
1455 <literal>buf.writeInt8</literal>, |
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|
1456 <literal>buf.writeInt16BE</literal>, |
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|
1457 <literal>buf.writeInt32BE</literal>. |
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|
1458 </para> |
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|
1459 </tag-desc> |
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|
1460 |
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|
1461 <tag-name id="buf_writeintle"><literal>buf.writeIntLE(<value>value</value>, |
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|
1462 <value>offset</value>, |
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|
1463 <value>byteLength</value>)</literal></tag-name> |
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|
1464 <tag-desc> |
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|
1465 Writes <value>byteLength</value> bytes of <value>value</value> |
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|
1466 to <literal>buf</literal> |
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|
1467 at the specified <value>offset</value> as little-endian. |
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parents:
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|
1468 Supports up to 48 bits of accuracy. |
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parents:
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|
1469 The <value>byteLength</value> parameter is an integer between 1 and 6 |
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parents:
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changeset
|
1470 specifying the number of bytes to read. |
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|
1471 <para> |
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changeset
|
1472 The following similar methods are also supported: |
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parents:
2605
diff
changeset
|
1473 <literal>buf.writeInt8</literal>, |
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|
1474 <literal>buf.writeInt16LE</literal>, |
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diff
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|
1475 <literal>buf.writeInt32LE</literal>. |
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diff
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|
1476 </para> |
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diff
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|
1477 </tag-desc> |
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|
1478 |
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diff
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|
1479 <tag-name id="buf_writeuintbe"><literal>buf.writeUIntBE(<value>value</value>, |
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|
1480 <value>offset</value>, |
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diff
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|
1481 <value>byteLength</value>)</literal></tag-name> |
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|
1482 <tag-desc> |
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|
1483 Writes <value>byteLength</value> bytes of <value>value</value> |
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|
1484 to <literal>buf</literal> |
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diff
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|
1485 at the specified <value>offset</value> as big-endian. |
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parents:
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diff
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|
1486 Supports up to 48 bits of accuracy. |
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parents:
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diff
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|
1487 The <value>byteLength</value> parameter is an integer between 1 and 6 |
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parents:
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diff
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|
1488 specifying the number of bytes to read. |
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diff
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|
1489 <para> |
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|
1490 The following similar methods are also supported: |
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parents:
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diff
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|
1491 <literal>buf.writeUInt8</literal>, |
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parents:
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diff
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|
1492 <literal>buf.writeUInt16BE</literal>, |
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parents:
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|
1493 <literal>buf.writeUInt32BE</literal>. |
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|
1494 </para> |
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|
1495 </tag-desc> |
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|
1496 |
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|
1497 <tag-name id="buf_writeuintle"><literal>buf.writeUIntLE(<value>value</value>, |
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|
1498 <value>offset</value>, |
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|
1499 <value>byteLength</value>)</literal></tag-name> |
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|
1500 <tag-desc> |
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|
1501 Writes <value>byteLength</value> bytes of <value>value</value> |
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|
1502 to <literal>buf</literal> |
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|
1503 at the specified <value>offset</value> as little-endian. |
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|
1504 Supports up to 48 bits of accuracy. |
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|
1505 The <value>byteLength</value> parameter is an integer between 1 and 6 |
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|
1506 specifying the number of bytes to read. |
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|
1507 <para> |
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|
1508 The following similar methods are also supported: |
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parents:
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diff
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|
1509 <literal>buf.writeUInt8</literal>, |
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|
1510 <literal>buf.writeUInt16LE</literal>, |
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|
1511 <literal>buf.writeUInt32LE</literal>. |
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|
1512 </para> |
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|
1513 </tag-desc> |
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|
1514 |
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|
1515 <tag-name id="buf_writedoublebe"><literal>buf.writeDoubleBE(<value>value</value>, |
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|
1516 [<value>offset</value>])</literal></tag-name> |
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|
1517 <tag-desc> |
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|
1518 Writes the <value>value</value> to <literal>buf</literal> |
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|
1519 at the specified <value>offset</value> as big-endian. |
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|
1520 </tag-desc> |
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|
1521 |
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|
1522 <tag-name id="buf_writedoublele"><literal>buf.writeDoubleLE(<value>value</value>, |
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|
1523 [<value>offset</value>])</literal></tag-name> |
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|
1524 <tag-desc> |
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|
1525 Writes the <value>value</value> to <literal>buf</literal> |
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|
1526 at the specified <value>offset</value> as little-endian. |
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|
1527 </tag-desc> |
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|
1528 |
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|
1529 <tag-name id="buf_writefloatbe"><literal>buf.writeFloatBE(<value>value</value>, |
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|
1530 [<value>offset</value>])</literal></tag-name> |
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|
1531 <tag-desc> |
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|
1532 Writes the <value>value</value> to <literal>buf</literal> |
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|
1533 at the specified <value>offset</value> as big-endian. |
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|
1534 </tag-desc> |
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|
1535 |
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|
1536 <tag-name id="buf_writefloatle"><literal>buf.writeFloatLE(<value>value</value>, |
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|
1537 [<value>offset</value>])</literal></tag-name> |
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|
1538 <tag-desc> |
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|
1539 Writes the <value>value</value> to <literal>buf</literal> |
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|
1540 at the specified <value>offset</value> as little-endian. |
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|
1541 </tag-desc> |
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|
1542 |
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|
1543 </list> |
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|
1544 </para> |
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|
1545 |
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|
1546 </section> |
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|
1547 |
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|
1548 |
2177 | 1549 <section id="crypto" name="Crypto"> |
1550 | |
1551 <para> | |
1552 The Crypto module provides cryptographic functionality support. | |
1553 The Crypto module object is returned by <literal>require('crypto')</literal>. | |
1554 </para> | |
1555 | |
1556 <para> | |
1557 <list type="tag"> | |
1558 | |
2267
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Added links to njs reference from njs Compatibility.
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diff
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|
1559 <tag-name id="crypto_createhash"><literal>crypto.createHash(<value>algorithm</value>)</literal></tag-name> |
2177 | 1560 <tag-desc> |
1561 Creates and returns a <link id="crypto_hash">Hash</link> object | |
1562 that can be used to generate hash digests | |
1563 using the given <value>algorithm</value>. | |
2496
9dddac1420fe
Fixed typo in njs reference.
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diff
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|
1564 The algorithm can be |
2177 | 1565 <literal>md5</literal>, |
1566 <literal>sha1</literal>, and | |
1567 <literal>sha256</literal>. | |
1568 </tag-desc> | |
1569 | |
2267
c30048802769
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diff
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|
1570 <tag-name id="crypto_createhmac"><literal>crypto.createHmac(<value>algorithm</value>, |
2177 | 1571 <value>secret key</value>)</literal></tag-name> |
1572 <tag-desc> | |
2579
63cef7604e0d
Minor review of njs Reference for typos and style.
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2578
diff
changeset
|
1573 Creates and returns an <link id="crypto_hmac">HMAC</link> object that uses |
63cef7604e0d
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diff
changeset
|
1574 the given <value>algorithm</value> and <value>secret key</value>. |
2496
9dddac1420fe
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2484
diff
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|
1575 The algorithm can be |
2177 | 1576 <literal>md5</literal>, |
1577 <literal>sha1</literal>, and | |
1578 <literal>sha256</literal>. | |
1579 </tag-desc> | |
1580 | |
1581 </list> | |
1582 </para> | |
1583 | |
1584 | |
1585 <section id="crypto_hash" name="Hash"> | |
1586 | |
1587 <para> | |
1588 <list type="tag"> | |
1589 | |
2601 | 1590 <tag-name id="crypto_hash_update"><literal>hash.update(<value>data</value>)</literal></tag-name> |
2177 | 1591 <tag-desc> |
1592 Updates the hash content with the given <value>data</value>. | |
1593 </tag-desc> | |
1594 | |
2601 | 1595 <tag-name id="crypto_hash_digest"><literal>hash.digest([<value>encoding</value>])</literal></tag-name> |
2177 | 1596 <tag-desc> |
1597 Calculates the digest of all of the data passed using | |
1598 <literal>hash.update()</literal>. | |
1599 The encoding can be | |
1600 <literal>hex</literal>, | |
1601 <literal>base64</literal>, and | |
1602 <literal>base64url</literal>. | |
2604
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|
1603 If encoding is not provided, a Buffer object |
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|
1604 (<link doc="changes.xml" id="njs0.4.4">0.4.4</link>) is returned. |
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|
1605 <note> |
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|
1606 Before version (<link doc="changes.xml" id="njs0.4.4">0.4.4</link>), |
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|
1607 a byte string was returned instead of a Buffer object. |
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|
1608 </note> |
2177 | 1609 </tag-desc> |
1610 | |
1611 </list> | |
1612 </para> | |
1613 | |
1614 <para> | |
1615 <example> | |
1616 >> var cr = require('crypto') | |
1617 undefined | |
1618 | |
1619 >> cr.createHash('sha1').update('A').update('B').digest('base64url') | |
2214
e029f4bc7ede
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diff
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|
1620 'BtlFlCqiamG-GMPiK_GbvKjdK10' |
2177 | 1621 </example> |
1622 </para> | |
1623 | |
1624 </section> | |
1625 | |
1626 | |
1627 <section id="crypto_hmac" name="HMAC"> | |
1628 | |
1629 <para> | |
1630 <list type="tag"> | |
1631 | |
2601 | 1632 <tag-name id="crypto_hmac_update"><literal>hmac.update(<value>data</value>)</literal></tag-name> |
2177 | 1633 <tag-desc> |
1634 Updates the HMAC content with the given <value>data</value>. | |
1635 </tag-desc> | |
1636 | |
2601 | 1637 <tag-name id="crypto_hmac_digest"><literal>hmac.digest([<value>encoding</value>])</literal></tag-name> |
2177 | 1638 <tag-desc> |
1639 Calculates the HMAC digest of all of the data passed using | |
1640 <literal>hmac.update()</literal>. | |
1641 The encoding can be | |
1642 <literal>hex</literal>, | |
1643 <literal>base64</literal>, and | |
1644 <literal>base64url</literal>. | |
2604
a29676472a11
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|
1645 If encoding is not provided, a Buffer object |
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|
1646 (<link doc="changes.xml" id="njs0.4.4">0.4.4</link>) is returned. |
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|
1647 <note> |
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|
1648 Before version <link doc="changes.xml" id="njs0.4.4">0.4.4</link>, |
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|
1649 a byte string was returned instead of a Buffer object. |
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|
1650 </note> |
2177 | 1651 </tag-desc> |
1652 </list> | |
1653 </para> | |
1654 | |
1655 <para> | |
1656 <example> | |
1657 >> var cr = require('crypto') | |
1658 undefined | |
1659 | |
1660 >> cr.createHmac('sha1', 'secret.key').update('AB').digest('base64url') | |
2214
e029f4bc7ede
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diff
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|
1661 'Oglm93xn23_MkiaEq_e9u8zk374' |
2177 | 1662 </example> |
1663 </para> | |
1664 | |
1665 </section> | |
1666 | |
1667 </section> | |
1668 | |
2204
001f2d905fd9
Documented fileSystem methods in njs.
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2203
diff
changeset
|
1669 |
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|
1670 <section id="njs_api_fs" name="File System"> |
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|
1671 |
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diff
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|
1672 <para> |
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Documented fileSystem methods in njs.
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|
1673 The File System module provides operations with files. |
2507 | 1674 </para> |
1675 | |
1676 <para> | |
2204
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|
1677 The module object is returned by <literal>require('fs')</literal>. |
2508
d3d5b67a1462
Language fixes in njs file system methods.
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parents:
2507
diff
changeset
|
1678 Since <link doc="changes.xml" id="njs0.3.9">0.3.9</link>, |
d3d5b67a1462
Language fixes in njs file system methods.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2507
diff
changeset
|
1679 promissified versions of file system methods are available through |
2507 | 1680 <literal>require('fs').promises</literal> object: |
1681 <example> | |
1682 > var fs = require('fs').promises; | |
1683 undefined | |
1684 > fs.readFile("/file/path").then((data)=>console.log(data)) | |
1685 <file data> | |
1686 </example> | |
2204
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
1687 <list type="tag"> |
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|
1688 |
2507 | 1689 <tag-name id="fs_accesssync"><literal>accessSync(<value>path</value>[, |
1690 <value>mode</value>])</literal></tag-name> | |
1691 <tag-desc> | |
1692 Synchronously tests permissions for a file or directory | |
1693 specified in the <literal>path</literal> | |
1694 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). | |
1695 If the check fails, an error will be returned, | |
1696 otherwise, the method will return undefined. | |
1697 <list type="tag"> | |
1698 | |
1699 <tag-name><literal>mode</literal></tag-name> | |
1700 <tag-desc> | |
1701 by default is <link id="access_const"><literal>fs.constants.F_OK</literal></link>. | |
1702 The mode argument is an optional integer | |
1703 that specifies the accessibility checks to be performed. | |
1704 <example> | |
1705 try { | |
1706 fs.accessSync('/file/path', fs.constants.R_OK | fs.constants.W_OK); | |
1707 console.log('has access'); | |
1708 } catch (e) { | |
1709 console.log('no access');) | |
1710 } | |
1711 </example> | |
1712 </tag-desc> | |
1713 | |
1714 </list> | |
1715 </tag-desc> | |
1716 | |
2570
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|
1717 <tag-name id="fs_appendfilesync"><literal>appendFileSync(<value>filename</value>, |
2204
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Documented fileSystem methods in njs.
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|
1718 <value>data</value>[, <value>options</value>])</literal></tag-name> |
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|
1719 <tag-desc> |
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|
1720 Synchronously appends specified <literal>data</literal> |
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Documented fileSystem methods in njs.
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|
1721 to a file with provided <literal>filename</literal>. |
2604
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|
1722 The <literal>data</literal> is expected to be a string |
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|
1723 or a Buffer object (<link doc="changes.xml" id="njs0.4.4">0.4.4</link>). |
2204
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|
1724 If the file does not exist, it will be created. |
001f2d905fd9
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|
1725 The <literal>options</literal> parameter is expected to be |
001f2d905fd9
Documented fileSystem methods in njs.
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diff
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|
1726 an object with the following keys: |
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|
1727 <list type="tag"> |
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|
1728 |
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|
1729 <tag-name><literal>mode</literal></tag-name> |
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|
1730 <tag-desc> |
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|
1731 mode option, by default is <literal>0o666</literal> |
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|
1732 </tag-desc> |
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|
1733 |
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|
1734 <tag-name><literal>flag</literal></tag-name> |
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|
1735 <tag-desc> |
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|
1736 file system <link id="njs_api_fs_flags">flag</link>, |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1737 by default is <literal>a</literal> |
001f2d905fd9
Documented fileSystem methods in njs.
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|
1738 </tag-desc> |
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|
1739 |
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|
1740 </list> |
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|
1741 </tag-desc> |
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|
1742 |
2563
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|
1743 <tag-name id="fs_mkdirsync"><literal>mkdirSync(<value>path</value>[, |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
1744 <value>options</value>])</literal></tag-name> |
428a8cf1911b
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diff
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|
1745 <tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
1746 Synchronously creates a directory at the specified <literal>path</literal> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
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|
1747 (<link doc="changes.xml" id="njs0.4.2">0.4.2</link>). |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1748 The <literal>options</literal> parameter is expected to be an |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
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|
1749 <literal>integer</literal> that specifies |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1750 the <link id="fs_mkdirsync_mode">mode</link>, |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
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|
1751 or an object with the following keys: |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1752 <list type="tag"> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1753 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1754 <tag-name id="fs_mkdirsync_mode"><literal>mode</literal></tag-name> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1755 <tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
1756 mode option, by default is <literal>0o777</literal>. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1757 </tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
1758 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1759 </list> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1760 </tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
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|
1761 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1762 <tag-name id="fs_readdirsync"><literal>readdirSync(<value>path</value>[, |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1763 <value>options</value>])</literal></tag-name> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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diff
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|
1764 <tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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parents:
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diff
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|
1765 Synchronously reads the contents of a directory |
428a8cf1911b
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parents:
2546
diff
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|
1766 at the specified <literal>path</literal> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
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|
1767 (<link doc="changes.xml" id="njs0.4.2">0.4.2</link>). |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1768 The <literal>options</literal> parameter is expected to be |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1769 a string that specifies <link id="fs_readdirsync_encoding">encoding</link> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1770 or an object with the following keys: |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1771 <list type="tag"> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1772 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1773 <tag-name id="fs_readdirsync_encoding"><literal>encoding</literal></tag-name> |
428a8cf1911b
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|
1774 <tag-desc> |
2604
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|
1775 encoding, by default is <literal>utf8</literal>. |
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|
1776 The encoding can be <literal>utf8</literal> and <literal>buffer</literal> |
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diff
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|
1777 (<link doc="changes.xml" id="njs0.4.4">0.4.4</link>). |
2563
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diff
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|
1778 </tag-desc> |
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|
1779 |
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|
1780 <tag-name id="fs_readdirsync_withfiletypes"><literal>withFileTypes</literal></tag-name> |
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|
1781 <tag-desc> |
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|
1782 if set to <literal>true</literal>, the files array will contain |
428a8cf1911b
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diff
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|
1783 <link id="fs_dirent"><literal>fs.Dirent</literal></link> objects, |
428a8cf1911b
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|
1784 by default is <literal>false</literal>. |
428a8cf1911b
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|
1785 </tag-desc> |
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|
1786 |
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|
1787 </list> |
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|
1788 </tag-desc> |
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|
1789 |
2570
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|
1790 <tag-name id="fs_readfilesync"><literal>readFileSync(<value>filename</value>[, |
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|
1791 <value>options</value>])</literal></tag-name> |
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|
1792 <tag-desc> |
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1793 Synchronously returns the contents of the file |
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|
1794 with provided <literal>filename</literal>. |
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|
1795 The <literal>options</literal> parameter holds |
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|
1796 <literal>string</literal> that specifies encoding. |
2604
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|
1797 If an encoding is specified, a string is returned, |
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|
1798 otherwise, a Buffer object |
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|
1799 (<link doc="changes.xml" id="njs0.4.4">0.4.4</link>) is returned. |
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|
1800 <note> |
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|
1801 Before version <link doc="changes.xml" id="njs0.4.4">0.4.4</link>, |
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|
1802 a <link id="string_tobytes">byte string</link> was returned |
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|
1803 if encoding was not specified. |
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changeset
|
1804 </note> |
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1805 Otherwise, <literal>options</literal> is expected to be |
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1806 an object with the following keys: |
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Documented fileSystem methods in njs.
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1807 <list type="tag"> |
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1808 |
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|
1809 <tag-name><literal>encoding</literal></tag-name> |
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1810 <tag-desc> |
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1811 encoding, by default is not specified. |
2604
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1812 The encoding can be <literal>utf8</literal>, |
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Added Buffer object info to some njs methods.
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1813 <literal>hex</literal> |
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|
1814 (<link doc="changes.xml" id="njs0.4.4">0.4.4</link>), |
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|
1815 <literal>base64</literal> |
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|
1816 (<link doc="changes.xml" id="njs0.4.4">0.4.4</link>), |
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|
1817 <literal>base64url</literal> |
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|
1818 (<link doc="changes.xml" id="njs0.4.4">0.4.4</link>). |
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1819 </tag-desc> |
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1820 |
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1821 <tag-name><literal>flag</literal></tag-name> |
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1822 <tag-desc> |
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1823 file system <link id="njs_api_fs_flags">flag</link>, |
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1824 by default is <literal>r</literal> |
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1825 </tag-desc> |
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1826 |
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1827 </list> |
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1828 <example> |
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1829 >> var fs = require('fs') |
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|
1830 undefined |
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|
1831 >> var file = fs.readFileSync('/file/path.tar.gz') |
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1832 undefined |
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|
1833 >> var gzipped = file.slice(0,2).toString('hex') === '1f8b'; gzipped |
2204
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1834 true |
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|
1835 </example> |
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|
1836 </tag-desc> |
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|
1837 |
2507 | 1838 <tag-name id="fs_realpathsync"><literal>realpathSync(<value>path</value>[, |
1839 <value>options</value>])</literal></tag-name> | |
1840 <tag-desc> | |
1841 Synchronously computes the canonical pathname by resolving | |
1842 <literal>.</literal>, <literal>..</literal> and symbolic links using | |
2508
d3d5b67a1462
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diff
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1843 <link url="http://man7.org/linux/man-pages/man3/realpath.3.html">realpath(3)</link>. |
2507 | 1844 The <literal>options</literal> argument can be a string specifying an encoding, |
1845 or an object with an encoding property specifying the character encoding | |
1846 to use for the path passed to the callback | |
1847 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). | |
1848 </tag-desc> | |
1849 | |
2509
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1850 <tag-name id="fs_renamesync"><literal>renameSync(<value>oldPath</value>, |
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|
1851 <value>newPath</value>)</literal></tag-name> |
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1852 <tag-desc> |
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|
1853 Synchronously changes the name or location of a file from |
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diff
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|
1854 <literal>oldPath</literal> to <literal>newPath</literal> |
827a6d7fe108
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|
1855 (<link doc="changes.xml" id="njs0.3.4">0.3.4</link>). |
827a6d7fe108
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|
1856 <example> |
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|
1857 >> var fs = require('fs') |
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|
1858 undefined |
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|
1859 >> var file = fs.renameSync('hello.txt', 'HelloWorld.txt') |
827a6d7fe108
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|
1860 undefined |
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Reordered alphabetically njs file system methods.
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|
1861 </example> |
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Reordered alphabetically njs file system methods.
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|
1862 </tag-desc> |
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Reordered alphabetically njs file system methods.
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|
1863 |
2563
428a8cf1911b
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|
1864 <tag-name id="fs_rmdirsync"><literal>rmdirSync(<value>path</value>)</literal></tag-name> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1865 <tag-desc> |
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Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1866 Synchronously removes a directory at the specified <literal>path</literal> |
428a8cf1911b
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|
1867 (<link doc="changes.xml" id="njs0.4.2">0.4.2</link>). |
428a8cf1911b
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|
1868 </tag-desc> |
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|
1869 |
2509
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|
1870 <tag-name id="fs_symlinksync"><literal>symlinkSync(<value>target</value>, |
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|
1871 <value>path</value>)</literal></tag-name> |
827a6d7fe108
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|
1872 <tag-desc> |
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|
1873 Synchronously creates the link called <literal>path</literal> |
827a6d7fe108
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|
1874 pointing to <literal>target</literal> using |
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Reordered alphabetically njs file system methods.
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|
1875 <link url="http://man7.org/linux/man-pages/man2/symlink.2.html">symlink(2)</link> |
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|
1876 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). |
827a6d7fe108
Reordered alphabetically njs file system methods.
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|
1877 Relative targets are relative to the link’s parent directory. |
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|
1878 </tag-desc> |
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Reordered alphabetically njs file system methods.
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|
1879 |
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|
1880 <tag-name id="fs_unlinksync"><literal>unlinkSync(<value>path</value>)</literal></tag-name> |
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|
1881 <tag-desc> |
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|
1882 Synchronously unlinks a file by <literal>path</literal> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1883 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). |
827a6d7fe108
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|
1884 </tag-desc> |
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|
1885 |
2570
44792f1ee284
Added IDs to methods in njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2569
diff
changeset
|
1886 <tag-name id="fs_writefilesync"><literal>writeFileSync(<value>filename</value>, |
2204
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|
1887 <value>data</value>[, |
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|
1888 <value>options</value>])</literal></tag-name> |
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1889 <tag-desc> |
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1890 Synchronously writes <literal>data</literal> to a file |
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|
1891 with provided <literal>filename</literal>. |
2604
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|
1892 The <literal>data</literal> is expected to be a string |
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1893 or a Buffer object (<link doc="changes.xml" id="njs0.4.4">0.4.4</link>). |
2204
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1894 If the file does not exist, it will be created, |
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1895 if the file exists, it will be replaced. |
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1896 The <literal>options</literal> parameter is expected to be |
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1897 an object with the following keys: |
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|
1898 <list type="tag"> |
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|
1899 <tag-name><literal>mode</literal></tag-name> |
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1900 <tag-desc> |
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1901 mode option, by default is <literal>0o666</literal> |
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1902 </tag-desc> |
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|
1903 |
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1904 <tag-name><literal>flag</literal></tag-name> |
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1905 <tag-desc> |
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1906 file system <link id="njs_api_fs_flags">flag</link>, |
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1907 by default is <literal>w</literal> |
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1908 </tag-desc> |
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|
1909 |
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|
1910 </list> |
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|
1911 <example> |
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|
1912 >> var fs = require('fs') |
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|
1913 undefined |
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|
1914 >> var file = fs.writeFileSync('hello.txt', 'Hello world') |
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|
1915 undefined |
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|
1916 </example> |
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|
1917 </tag-desc> |
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|
1918 |
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|
1919 </list> |
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|
1920 </para> |
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|
1921 |
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|
1922 |
2563
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1923 <section id="fs_dirent" name="fs.Dirent"> |
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1924 |
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|
1925 <para> |
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1926 <literal>fs.Dirent</literal> is a representation of a directory entry— |
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1927 a file or a subdirectory. |
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1928 When |
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1929 <link id="fs_readdirsync"><literal>readdirSync()</literal></link> |
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1930 is called with the |
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1931 <link id="fs_readdirsync_withfiletypes"><literal>withFileTypes</literal></link> |
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1932 option, |
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1933 the resulting array contains <literal>fs.Dirent</literal> objects. |
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1934 |
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1935 <list type= "bullet" compact="no"> |
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1936 |
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1937 <listitem> |
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1938 <literal>dirent.isBlockDevice()</literal>—returns |
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1939 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
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|
1940 a block device. |
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Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1941 </listitem> |
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diff
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|
1942 |
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Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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diff
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|
1943 <listitem> |
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Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1944 <literal>dirent.isCharacterDevice()</literal>—returns |
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Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1945 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1946 a character device. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1947 </listitem> |
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diff
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|
1948 |
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Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1949 <listitem> |
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Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1950 <literal>dirent.isDirectory()</literal>—returns |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1951 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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diff
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|
1952 a file system directory. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1953 </listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
1954 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1955 <listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1956 <literal>dirent.isFIFO()</literal>—returns |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
1957 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1958 a first-in-first-out (FIFO) pipe. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1959 </listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1960 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1961 <listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1962 <literal>dirent.isFile()</literal>—returns |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1963 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1964 a regular file. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1965 </listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1966 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1967 <listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
changeset
|
1968 <literal>dirent.isSocket()</literal>—returns |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1969 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1970 a socket. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1971 </listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1972 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1973 <listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1974 <literal>dirent.isSymbolicLink()</literal>—returns |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1975 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1976 a symbolic link. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1977 </listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1978 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1979 <listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1980 <literal>dirent.name</literal>— |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1981 the name of the file <literal>fs.Dirent</literal> object refers to. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1982 </listitem> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1983 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1984 </list> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1985 </para> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1986 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1987 </section> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1988 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
1989 |
2507 | 1990 <section id="access_const" name="File Access Constants"> |
1991 | |
1992 <para> | |
1993 The <link id="fs_accesssync"><literal>access()</literal></link> method | |
1994 can accept the following flags. | |
1995 These flags are exported by <literal>fs.constants</literal>: | |
1996 | |
1997 <list type= "bullet" compact="no"> | |
1998 | |
1999 <listitem> | |
2000 <literal>F_OK</literal>—indicates that the file | |
2001 is visible to the calling process, | |
2002 used by default if no mode is specified | |
2003 </listitem> | |
2004 | |
2005 <listitem> | |
2006 <literal>R_OK</literal>—indicates that the file can be | |
2007 read by the calling process | |
2008 </listitem> | |
2009 | |
2010 <listitem> | |
2011 <literal>W_OK</literal>—indicates that the file can be | |
2012 written by the calling process | |
2013 </listitem> | |
2014 | |
2015 <listitem> | |
2016 <literal>X_OK</literal>—indicates that the file can be | |
2017 executed by the calling process | |
2018 </listitem> | |
2019 | |
2020 </list> | |
2021 </para> | |
2022 | |
2023 </section> | |
2024 | |
2025 | |
2204
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2026 <section id="njs_api_fs_flags" name="File System Flags"> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2027 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2028 <para> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2029 The <literal>flag</literal> option can accept the following values: |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
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|
2030 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2031 <list type= "bullet" compact="no"> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2032 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2033 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2034 <literal>a</literal>—open a file for appending. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2035 The file is created if it does not exist |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2036 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2037 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2038 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2039 <literal>ax</literal>—the same as <literal>a</literal> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
2040 but fails if the file already exists |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2041 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2042 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2043 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2044 <literal>a+</literal>—open a file for reading and appending. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2045 If the file does not exist, it will be created |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
2046 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2047 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2048 <listitem> |
2579
63cef7604e0d
Minor review of njs Reference for typos and style.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2578
diff
changeset
|
2049 <literal>ax+</literal>—the same as <literal>a+</literal> |
2204
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
2050 but fails if the file already exists |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
2051 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2052 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2053 <listitem> |
2579
63cef7604e0d
Minor review of njs Reference for typos and style.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2578
diff
changeset
|
2054 <literal>as</literal>—open a file for appending |
63cef7604e0d
Minor review of njs Reference for typos and style.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2578
diff
changeset
|
2055 in synchronous mode. |
2204
001f2d905fd9
Documented fileSystem methods in njs.
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parents:
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diff
changeset
|
2056 If the file does not exist, it will be created |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
2057 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
2058 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
2059 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
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changeset
|
2060 <literal>as+</literal>—open a file for reading and appending |
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Yaroslav Zhuravlev <yar@nginx.com>
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2061 in synchronous mode. |
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|
2062 If the file does not exist, it will be created |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
2063 </listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
2064 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2065 <listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2066 <literal>r</literal>—open a file for reading. |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2067 An exception occurs if the file does not exist |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2068 </listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
2069 |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2070 <listitem> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2071 <literal>r+</literal>—open a file for reading and writing. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2072 An exception occurs if the file does not exist |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
2073 </listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2074 |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2075 <listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2076 <literal>rs+</literal>—open a file for reading and writing |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2077 in synchronous mode. |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2078 Instructs the operating system to bypass the local file system cache |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2079 </listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2080 |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2081 <listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2082 <literal>w</literal>—open a file for writing. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2083 If the file does not exist, it will be created. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2084 If the file exists, it will be replaced |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2085 </listitem> |
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2086 |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2087 <listitem> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2088 <literal>wx</literal>—the same as <literal>w</literal> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2089 but fails if the file already exists |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2090 </listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2091 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2092 <listitem> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2093 <literal>w+</literal>—open a file for reading and writing. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2094 If the file does not exist, it will be created. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2095 If the file exists, it will be replaced |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2096 </listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2097 |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2098 <listitem> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2099 <literal>wx+</literal>—the same as <literal>w+</literal> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2100 but fails if the file already exists |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2101 </listitem> |
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2102 |
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2103 </list> |
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parents:
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|
2104 </para> |
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2105 |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2106 </section> |
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2107 |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2108 </section> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2109 |
2583
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2110 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2111 <section id="querystring" name="Query String"> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2112 |
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2113 <para> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2114 The Query String module provides support |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2115 for parsing and formatting URL query strings |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2116 (<link doc="changes.xml" id="njs0.4.3">0.4.3</link>). |
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Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
2117 The Query String module object is returned by |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2118 <literal>require('querystring')</literal>. |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2119 </para> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2120 |
cd97adddd757
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2121 <para> |
cd97adddd757
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2122 <list type="tag"> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2123 |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2124 <tag-name id="querystring_decode"><literal>querystring.decode()</literal></tag-name> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2125 <tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2126 is an alias for |
cd97adddd757
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
2127 <link id="querystring_parse"><literal>querystring.parse()</literal></link>. |
cd97adddd757
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2128 </tag-desc> |
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parents:
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|
2129 |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2130 <tag-name id="querystring_encode"><literal>querystring.encode()</literal></tag-name> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2131 <tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2132 is an alias for |
cd97adddd757
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2133 <link id="querystring_stringify"><literal>querystring.stringify()</literal></link>. |
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|
2134 </tag-desc> |
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|
2135 |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2136 <tag-name id="querystring_escape"><literal>querystring.escape(<value>string</value>)</literal></tag-name> |
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|
2137 <tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2138 <para> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2139 Performs URL encoding of the given <literal>string</literal>, |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2140 returns an escaped query string. |
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parents:
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|
2141 The method is used by |
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|
2142 <link id="querystring_stringify"><literal>querystring.stringify()</literal></link> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
2143 and should not be used directly. |
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|
2144 </para> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
2145 </tag-desc> |
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|
2146 |
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|
2147 <tag-name id="querystring_parse"><literal>querystring.parse(<value>string</value>[, |
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parents:
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|
2148 <value>separator</value>[, |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
2149 <value>equal</value>[, |
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|
2150 <value>options</value>]]])</literal></tag-name> |
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|
2151 <tag-desc> |
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|
2152 <para> |
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|
2153 Parses the query string URL and returns an object. |
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|
2154 </para> |
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|
2155 |
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|
2156 <para> |
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|
2157 The <literal>separator</literal> parameter is a substring |
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|
2158 for delimiting key and value pairs in the query string, |
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|
2159 by default is “<literal>&</literal>”. |
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|
2160 </para> |
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|
2161 |
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|
2162 <para> |
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|
2163 The <literal>equal</literal> parameter is a substring |
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|
2164 for delimiting keys and values in the query string, |
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|
2165 by default is “<literal>=</literal>”. |
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|
2166 </para> |
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|
2167 |
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|
2168 <para> |
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|
2169 The <literal>options</literal> parameter is expected to be |
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|
2170 an object with the following keys: |
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|
2171 <list type="tag"> |
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|
2172 <tag-name><literal>decodeURIComponent</literal> |
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|
2173 <value>function</value></tag-name> |
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|
2174 <tag-desc> |
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|
2175 Function used |
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|
2176 to decode percent-encoded characters in the query string, |
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|
2177 by default is |
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|
2178 <link id="querystring_unescape"><literal>querystring.unescape()</literal></link> |
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|
2179 </tag-desc> |
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|
2180 |
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2181 <tag-name><literal>maxKeys</literal> |
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2182 <value>number</value></tag-name> |
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2183 <tag-desc> |
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2184 the maximum number of keys to parse, |
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2185 by default is <literal>1000</literal>. |
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2186 The <literal>0</literal> value removes limitations for counting keys. |
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2187 </tag-desc> |
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2188 |
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2189 </list> |
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2190 By default, percent-encoded characters within the query string are assumed |
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2191 to use the UTF-8 encoding, |
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2192 invalid UTF-8 sequences will be replaced with |
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2193 the <literal>U+FFFD</literal> replacement character. |
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2194 </para> |
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2195 |
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2196 <para> |
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2197 For example, for the following query string |
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2198 <example> |
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2199 'foo=bar&abc=xyz&abc=123' |
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2200 </example> |
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2201 the output will be: |
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2202 <example> |
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2203 { |
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2204 foo: 'bar', |
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2205 abc: ['xyz', '123'] |
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2206 } |
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2207 </example> |
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2208 </para> |
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2209 |
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2210 </tag-desc> |
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2211 |
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2212 <tag-name id="querystring_stringify"><literal>querystring.stringify(<value>object</value>[, |
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2213 <value>separator</value>[, |
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2214 <value>equal</value>[, |
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2215 <value>options</value>]]])</literal></tag-name> |
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2216 <tag-desc> |
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2217 <para> |
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2218 Serializes an object and returns a URL query string. |
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2219 </para> |
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2220 |
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2221 <para> |
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2222 The <literal>separator</literal> parameter is a substring |
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2223 for delimiting key and value pairs in the query string, |
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2224 by default is “<literal>&</literal>”. |
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2225 </para> |
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2226 |
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2227 <para> |
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2228 The <literal>equal</literal> parameter is a substring |
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2229 for delimiting keys and values in the query string, |
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2230 by default is “<literal>=</literal>”. |
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2231 </para> |
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|
2232 |
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2233 <para> |
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2234 The <literal>options</literal> parameter is expected to be |
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2235 an object with the following keys: |
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2236 <list type="tag"> |
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2237 <tag-name><literal>encodeURIComponent</literal> |
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2238 <value>function</value></tag-name> |
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2239 <tag-desc> |
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2240 The function to use when converting |
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2241 URL-unsafe characters to percent-encoding in the query string, |
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2242 by default is |
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2243 <link id="querystring_escape"><literal>querystring.escape()</literal></link>. |
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2244 </tag-desc> |
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2245 |
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2246 </list> |
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2247 </para> |
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|
2248 |
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2249 <para> |
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2250 By default, characters that require percent-encoding within the query string |
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2251 are encoded as UTF-8. |
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2252 If other encoding is required, then |
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2253 <literal>encodeURIComponent</literal> option should be specified. |
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2254 </para> |
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|
2255 |
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2256 <para> |
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2257 For example, for the following command |
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2258 <example> |
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2259 querystring.stringify({ foo: 'bar', baz: ['qux', 'quux'], 123: '' }); |
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2260 </example> |
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2261 the query string will be: |
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2262 <example> |
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2263 'foo=bar&baz=qux&baz=quux&123=' |
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2264 </example> |
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2265 </para> |
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2266 |
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2267 </tag-desc> |
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2268 |
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2269 <tag-name id="querystring_unescape"><literal>querystring.unescape(<value>string</value>)</literal></tag-name> |
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2270 <tag-desc> |
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2271 <para> |
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2272 Performs decoding of URL percent-encoded characters |
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2273 of the <literal>string</literal>, |
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2274 returns an unescaped query string. |
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2275 The method is used by |
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2276 <link id="querystring_parse"><literal>querystring.parse()</literal></link> |
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2277 and should not be used directly. |
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2278 </para> |
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2279 </tag-desc> |
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2280 |
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2281 </list> |
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2282 </para> |
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2283 |
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2284 </section> |
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2285 |
2176 | 2286 </section> |
2287 | |
2175
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2288 </article> |