Mercurial > hg > nginx-site
annotate xml/en/docs/njs/reference.xml @ 2569:2edc64c05b0e
Removed ECMAScript methods from njs Reference.
author | Yaroslav Zhuravlev <yar@nginx.com> |
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date | Tue, 14 Jul 2020 16:44:46 +0100 |
parents | 5aa57c656cbf |
children | 44792f1ee284 |
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="46"> |
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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 <link id="string">byte strings</link>. |
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44 |
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45 <list type="tag"> |
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46 |
2353 | 47 <tag-name id="r_args"><literal>r.args{}</literal></tag-name> |
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48 <tag-desc> |
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49 request arguments object, read-only |
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50 </tag-desc> |
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51 |
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52 <tag-name><literal>r.error(<value>string</value>)</literal></tag-name> |
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53 <tag-desc> |
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54 writes a <literal>string</literal> to the error log |
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55 on the <literal>error</literal> level of logging |
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56 </tag-desc> |
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57 |
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58 <tag-name><literal>r.finish()</literal></tag-name> |
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59 <tag-desc> |
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60 finishes sending a response to the client |
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61 </tag-desc> |
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62 |
2353 | 63 <tag-name id="r_headers_in"><literal>r.headersIn{}</literal></tag-name> |
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64 <tag-desc> |
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65 incoming headers object, read-only. |
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66 <para> |
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67 The <literal>Foo</literal> request header |
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68 can be accessed with the syntax: |
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69 <literal>headersIn.foo</literal> or <literal>headersIn['Foo']</literal>. |
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70 </para> |
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71 |
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72 <para> |
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73 The |
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74 <header>Authorization</header>, |
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75 <header>Content-Length</header>, |
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76 <header>Content-Range</header>, |
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77 <header>Content-Type</header>, |
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78 <header>ETag</header>, |
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79 <header>Expect</header>, |
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80 <header>From</header>, |
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81 <header>Host</header>, |
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82 <header>If-Match</header>, |
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83 <header>If-Modified-Since</header>, |
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84 <header>If-None-Match</header>, |
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85 <header>If-Range</header>, |
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86 <header>If-Unmodified-Since</header>, |
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87 <header>Max-Forwards</header>, |
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88 <header>Proxy-Authorization</header>, |
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89 <header>Referer</header>, |
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90 <header>Transfer-Encoding</header>, and |
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91 <header>User-Agent</header> |
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92 request headers can have only one field value |
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93 (<link doc="changes.xml" id="njs0.4.1">0.4.1</link>). |
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94 Duplicate field values in <header>Cookie</header> headers |
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95 are separated by semicolon (<literal>;</literal>). |
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96 Duplicate field values in all other request headers are separated by commas. |
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97 </para> |
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98 </tag-desc> |
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99 |
2331 | 100 <tag-name id="r_headers_out"><literal>r.headersOut{}</literal></tag-name> |
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101 <tag-desc> |
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102 outgoing headers object, writable. |
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103 <para> |
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104 The <header>Foo</header> response header |
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105 can be accessed with the syntax: |
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106 <literal>headersOut.foo</literal> or <literal>headersOut['Foo']</literal>. |
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107 </para> |
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108 |
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109 <para> |
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110 Field values of multi-value response headers |
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111 (<link doc="changes.xml" id="njs0.4.0">0.4.0</link>) |
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112 can be set with the syntax: |
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113 <example> |
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114 r.headersOut['Foo'] = ['a', 'b'] |
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115 </example> |
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116 where the output will be: |
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117 <example> |
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118 Foo: a |
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119 Foo: b |
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120 </example> |
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121 All previous field values of the <header>Foo</header> response header |
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122 will be deleted. |
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123 </para> |
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124 |
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125 <para> |
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126 For standard response headers |
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127 that accept only a single field value such as |
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128 <header>Content-Type</header>, |
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129 only the last element of the array will take effect. |
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130 Field values of the <header>Set-Cookie</header> response header |
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131 are always returned as an array. |
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132 Duplicate field values in |
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133 <header>Age</header>, |
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134 <header>Content-Encoding</header>, |
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135 <header>Content-Length</header>, |
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136 <header>Content-Type</header>, |
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137 <header>ETag</header>, |
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138 <header>Expires</header>, |
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139 <header>Last-Modified</header>, |
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140 <header>Location</header>, |
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141 <header>Retry-After</header> |
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142 response headers are ignored. |
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143 Duplicate field values in all other response headers |
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144 are separated by commas. |
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145 </para> |
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146 </tag-desc> |
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147 |
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148 <tag-name><literal>r.httpVersion</literal></tag-name> |
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149 <tag-desc> |
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150 HTTP version, read-only |
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151 </tag-desc> |
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152 |
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153 <tag-name id="r_internal_redirect"><literal>r.internalRedirect(<value>uri</value>)</literal></tag-name> |
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154 <tag-desc> |
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155 performs an internal redirect to the specified <literal>uri</literal>. |
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156 If the uri starts with the “<literal>@</literal>” prefix, |
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157 it is considered a named location. |
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158 The actual redirect happens after the handler execution is completed. |
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159 </tag-desc> |
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160 |
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161 <tag-name><literal>r.log(<value>string</value>)</literal></tag-name> |
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162 <tag-desc> |
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163 writes a <literal>string</literal> to the error log |
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164 on the <literal>info</literal> level of logging |
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165 </tag-desc> |
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166 |
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167 <tag-name><literal>r.method</literal></tag-name> |
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168 <tag-desc> |
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169 HTTP method, read-only |
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170 </tag-desc> |
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171 |
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172 <tag-name id="r_parent"><literal>r.parent</literal></tag-name> |
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173 <tag-desc> |
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174 references the parent request object |
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175 </tag-desc> |
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176 |
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177 <tag-name><literal>r.remoteAddress</literal></tag-name> |
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178 <tag-desc> |
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179 client address, read-only |
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180 </tag-desc> |
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181 |
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182 <tag-name id="r_raw_headers_in"><literal>r.rawHeadersIn{}</literal></tag-name> |
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183 <tag-desc> |
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184 returns an array of key-value pairs |
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185 exactly as they were received from the client |
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186 (<link doc="changes.xml" id="njs0.4.1">0.4.1</link>). |
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187 <para> |
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188 For example, with the following request headers: |
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189 <example> |
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190 Host: localhost |
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191 Foo: bar |
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192 foo: bar2 |
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193 </example> |
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194 the output of <literal>r.rawHeadersIn</literal> will be: |
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195 <example> |
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196 [ |
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197 ['Host', 'localhost'], |
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198 ['Foo', 'bar'], |
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199 ['foo', 'bar2'] |
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200 ] |
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201 </example> |
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202 All <literal>foo</literal> headers |
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203 can be collected with the syntax: |
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204 <example> |
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205 r.rawHeadersIn.filter(v=>v[0].toLowerCase() == 'foo').map(v=>v[1]) |
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206 </example> |
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207 the output will be: |
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208 <example> |
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209 ['bar', 'bar2'] |
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210 </example> |
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211 Header field names are not converted to lower case, |
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212 duplicate field values are not merged. |
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213 </para> |
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214 </tag-desc> |
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215 |
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216 <tag-name id="r_raw_headers_out"><literal>r.rawHeadersOut{}</literal></tag-name> |
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217 <tag-desc> |
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218 returns an array of key-value pairs of response headers |
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219 (<link doc="changes.xml" id="njs0.4.1">0.4.1</link>). |
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220 Header field names are not converted to lower case, |
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221 duplicate field values are not merged. |
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222 </tag-desc> |
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223 |
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224 <tag-name id="r_request_body"><literal>r.requestBody</literal></tag-name> |
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225 <tag-desc> |
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226 returns the client request body if it has not been |
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227 written to a temporary file. |
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228 To ensure that the client request body is in memory, |
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229 its size should be limited by |
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230 <link doc="../http/ngx_http_core_module.xml" id="client_max_body_size"/>, |
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231 and a sufficient buffer size should be set using |
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232 <link doc="../http/ngx_http_core_module.xml" id="client_body_buffer_size"/>. |
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233 The property is available only in the |
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234 <link doc="../http/ngx_http_js_module.xml" id="js_content"/> directive. |
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235 </tag-desc> |
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236 |
2353 | 237 <tag-name id="r_response_body"><literal>r.responseBody</literal></tag-name> |
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238 <tag-desc> |
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239 holds the <link id="subrequest">subrequest</link> response body, read-only. |
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240 The size of <literal>r.responseBody</literal> is limited by the |
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241 <link doc="../http/ngx_http_core_module.xml" id="subrequest_output_buffer_size"/> |
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242 directive. |
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243 </tag-desc> |
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244 |
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245 <tag-name><literal>r.return(status[, string])</literal></tag-name> |
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246 <tag-desc> |
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247 sends the entire response |
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248 with the specified <literal>status</literal> to the client |
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249 <para> |
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250 It is possible to specify either a redirect URL |
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251 (for codes 301, 302, 303, 307, and 308) |
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252 or the response body text (for other codes) as the second argument |
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253 </para> |
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254 </tag-desc> |
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255 |
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256 <tag-name><literal>r.send(<value>string</value>)</literal></tag-name> |
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257 <tag-desc> |
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258 sends a part of the response body to the client |
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259 </tag-desc> |
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260 |
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261 <tag-name><literal>r.sendHeader()</literal></tag-name> |
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262 <tag-desc> |
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263 sends the HTTP headers to the client |
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264 </tag-desc> |
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265 |
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266 <tag-name><literal>r.status</literal></tag-name> |
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267 <tag-desc> |
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268 status, writable |
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269 </tag-desc> |
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270 |
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271 <tag-name id="subrequest"><literal>r.subrequest(<value>uri</value>[, |
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272 <value>options</value>[, <value>callback</value>]])</literal></tag-name> |
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273 <tag-desc> |
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274 creates a subrequest with the given <literal>uri</literal> and |
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275 <literal>options</literal>, and installs |
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276 an optional completion <literal>callback</literal>. |
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277 |
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278 <para> |
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279 A |
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280 <link doc="../dev/development_guide.xml.xml" id="http_subrequests">subrequest</link> |
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281 shares its input headers with the client request. |
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282 To send headers different from original headers to a proxied server, the |
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283 <link doc="../http/ngx_http_proxy_module.xml" id="proxy_set_header"/> |
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284 directive can be used. |
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285 To send a completely new set of headers to a proxied server, the |
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286 <link doc="../http/ngx_http_proxy_module.xml" id="proxy_pass_request_headers"/> |
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287 directive can be used. |
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288 </para> |
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289 |
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290 <para> |
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291 If <literal>options</literal> is a string, then it |
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292 holds the subrequest arguments string. |
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293 Otherwise, <literal>options</literal> is expected to be |
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294 an object with the following keys: |
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295 <list type="tag"> |
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296 <tag-name><literal>args</literal></tag-name> |
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297 <tag-desc> |
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298 arguments string, by default an empty string is used |
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299 </tag-desc> |
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300 <tag-name><literal>body</literal></tag-name> |
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301 <tag-desc> |
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302 request body, |
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303 by default the request body of the parent request object is used |
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304 </tag-desc> |
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305 |
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306 <tag-name><literal>method</literal></tag-name> |
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307 <tag-desc> |
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308 HTTP method, by default the <literal>GET</literal> method is used |
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309 </tag-desc> |
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310 |
2507 | 311 <tag-name><literal>detached</literal></tag-name> |
312 <tag-desc> | |
313 boolean flag (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>), | |
314 if <literal>true</literal>, the created subrequest is a detached subrequest. | |
315 Responses to detached subrequests are ignored. | |
316 Unlike ordinary subrequests, a detached subrequest | |
317 can be created inside a variable handler. | |
318 The detached flag and callback argument are mutually exclusive. | |
319 </tag-desc> | |
320 | |
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321 </list> |
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322 </para> |
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323 |
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324 <para> |
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325 The completion <literal>callback</literal> receives |
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326 a subrequest response object with methods and properties |
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327 identical to the parent request object. |
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328 </para> |
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329 |
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330 <para> |
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331 Since <link doc="changes.xml" id="njs0.3.8">0.3.8</link>, |
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332 if a <literal>callback</literal> is not provided, |
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333 the <literal>Promise</literal> object |
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334 that resolves to the subrequest response object is returned. |
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335 </para> |
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336 </tag-desc> |
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337 |
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338 <tag-name id="r_uri"><literal>r.uri</literal></tag-name> |
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339 <tag-desc> |
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340 current <link doc="../http/ngx_http_core_module.xml" id="var_uri">URI</link> |
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341 in request, |
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342 <link doc="../http/ngx_http_core_module.xml" id="location">normalized</link>, |
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343 read-only |
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344 </tag-desc> |
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345 |
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346 <tag-name id="r_variables"><literal>r.variables{}</literal></tag-name> |
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347 <tag-desc> |
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348 nginx variables object, |
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349 writable (since <link doc="changes.xml" id="njs0.2.8">0.2.8</link>) |
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350 </tag-desc> |
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|
351 |
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|
352 <tag-name><literal>r.warn(<value>string</value>)</literal></tag-name> |
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353 <tag-desc> |
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354 writes a <literal>string</literal> to the error log |
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355 on the <literal>warning</literal> level of logging |
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356 </tag-desc> |
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357 |
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358 </list> |
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359 </para> |
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360 |
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361 </section> |
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362 |
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363 |
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364 <section id="stream" name="Stream Session"> |
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365 |
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366 <para> |
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367 The stream session object is available only in the |
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368 <link doc="../stream/ngx_stream_js_module.xml">ngx_stream_js_module</link> |
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369 module. |
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370 All string properties of the object are <link id="string">byte strings</link>. |
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371 </para> |
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372 |
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373 <para> |
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374 <list type="tag"> |
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375 |
0f16ef9a8dbe
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376 <tag-name id="s_allow"><literal>s.allow()</literal></tag-name> |
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377 <tag-desc> |
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|
378 successfully finalizes the phase handler |
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Updated links to changes.xml in njs Reference.
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379 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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380 </tag-desc> |
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|
381 |
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|
382 <tag-name id="s_decline"><literal>s.decline()</literal></tag-name> |
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Created "nginx objects" section in reference.xml.
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|
383 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
384 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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385 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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386 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
387 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
388 <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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|
389 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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changeset
|
390 finalizes the phase handler with the access error code |
2337
867fe207f13e
Updated links to changes.xml in njs Reference.
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|
391 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
2247
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392 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
393 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
394 <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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changeset
|
395 <tag-desc> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
396 successfully finalizes the current phase handler |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
397 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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|
398 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
2247
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Created "nginx objects" section in reference.xml.
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|
399 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
400 |
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Created "nginx objects" section in reference.xml.
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changeset
|
401 <tag-name><literal>s.error(<value>string</value>)</literal></tag-name> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
402 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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changeset
|
403 writes a sent <literal>string</literal> to the error log |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
404 on the <literal>error</literal> level of logging |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
405 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
406 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
407 <tag-name><literal>s.log(<value>string</value>)</literal></tag-name> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
408 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
409 writes a sent <value>string</value> to the error log |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
410 on the <literal>info</literal> level of logging |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
411 </tag-desc> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
412 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
413 <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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parents:
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changeset
|
414 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
415 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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parents:
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|
416 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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417 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
418 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
419 <tag-name id="s_on"><literal>s.on(<value>event</value>, |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
420 <value>callback</value>)</literal></tag-name> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
421 <tag-desc> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
422 registers a <literal>callback</literal> for the specified <literal>event</literal> |
2337
867fe207f13e
Updated links to changes.xml in njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2332
diff
changeset
|
423 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
2247
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Created "nginx objects" section in reference.xml.
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parents:
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|
424 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
425 <para> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
426 An <literal>event</literal> may be one of the following strings: |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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|
427 <list type="tag"> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
428 <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
|
429 <tag-desc> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
430 new data from a client |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
431 </tag-desc> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
432 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
433 <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
|
434 <tag-desc> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
435 new data to a client |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
436 </tag-desc> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
437 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
438 </list> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
439 </para> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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diff
changeset
|
440 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
441 <para> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
442 The completion callback has the following prototype: |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
443 <literal>callback(data, flags)</literal>, where |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
444 <literal>data</literal> is string, |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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|
445 <literal>flags</literal> is an object |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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|
446 with the following properties: |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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|
447 <list type="tag"> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
448 <tag-name id="s_on_callback_last"><literal>last</literal></tag-name> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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changeset
|
449 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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changeset
|
450 a boolean value, true if data is a last buffer. |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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|
451 </tag-desc> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
452 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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parents:
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|
453 </list> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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454 </para> |
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|
455 </tag-desc> |
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|
456 |
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Created "nginx objects" section in reference.xml.
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|
457 <tag-name><literal>s.remoteAddress</literal></tag-name> |
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Created "nginx objects" section in reference.xml.
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|
458 <tag-desc> |
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|
459 client address, read-only |
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Created "nginx objects" section in reference.xml.
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|
460 </tag-desc> |
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|
461 |
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Created "nginx objects" section in reference.xml.
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|
462 <tag-name id="s_send"><literal>s.send(<value>data</value>[, |
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Created "nginx objects" section in reference.xml.
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|
463 <value>options</value>])</literal></tag-name> |
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Created "nginx objects" section in reference.xml.
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|
464 <tag-desc> |
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|
465 sends the data to the client |
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Updated links to changes.xml in njs Reference.
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|
466 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
2247
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467 The <literal>options</literal> is an object used |
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468 to override nginx buffer flags derived from an incoming data chunk buffer. |
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Created "nginx objects" section in reference.xml.
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469 The flags can be overriden with the following flags: |
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Created "nginx objects" section in reference.xml.
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470 <para> |
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|
471 <list type="tag"> |
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472 |
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Created "nginx objects" section in reference.xml.
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473 <tag-name><literal>last</literal></tag-name> |
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|
474 <tag-desc> |
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475 boolean, true if the buffer is the last buffer |
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476 </tag-desc> |
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477 |
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Created "nginx objects" section in reference.xml.
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|
478 <tag-name><literal>flush</literal></tag-name> |
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479 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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480 boolean, true if the buffer should have the <literal>flush</literal> flag |
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Created "nginx objects" section in reference.xml.
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481 </tag-desc> |
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482 </list> |
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483 </para> |
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|
484 The method can be called multiple times per callback invocation. |
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Created "nginx objects" section in reference.xml.
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|
485 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
486 |
2338
39ac205f90b7
Documented that r.variables{} and s.variables{} are writable.
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|
487 <tag-name id="s_variables"><literal>s.variables{}</literal></tag-name> |
2247
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|
488 <tag-desc> |
2338
39ac205f90b7
Documented that r.variables{} and s.variables{} are writable.
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|
489 nginx variables object, writable |
39ac205f90b7
Documented that r.variables{} and s.variables{} are writable.
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|
490 (since <link doc="changes.xml" id="njs0.2.8">0.2.8</link>) |
2247
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491 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
492 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
493 <tag-name><literal>s.warn(<value>string</value>)</literal></tag-name> |
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Created "nginx objects" section in reference.xml.
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changeset
|
494 <tag-desc> |
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Created "nginx objects" section in reference.xml.
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changeset
|
495 writes a sent <literal>string</literal> to the error log |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
496 on the <literal>warning</literal> level of logging |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
497 </tag-desc> |
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Created "nginx objects" section in reference.xml.
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|
498 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
499 </list> |
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Created "nginx objects" section in reference.xml.
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|
500 </para> |
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Created "nginx objects" section in reference.xml.
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|
501 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
502 </section> |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
503 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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changeset
|
504 </section> |
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Created "nginx objects" section in reference.xml.
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|
505 |
0f16ef9a8dbe
Created "nginx objects" section in reference.xml.
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|
506 |
2176 | 507 <section id="core" name="Core"> |
508 | |
509 | |
2405
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Documented the "process" global object.
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510 <section id="core_global" name="Global"> |
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Documented the "process" global object.
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|
511 |
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Documented the "process" global object.
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|
512 |
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Documented the "process" global object.
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|
513 <section id="process" name="Process"> |
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Documented the "process" global object.
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|
514 |
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Documented the "process" global object.
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diff
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|
515 <para> |
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Documented the "process" global object.
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changeset
|
516 The <literal>process</literal> object is a global object |
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Documented the "process" global object.
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517 that provides information about the current process |
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Documented the "process" global object.
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|
518 (<link doc="changes.xml" id="njs0.3.3">0.3.3</link>). |
dbf68c949522
Documented the "process" global object.
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|
519 </para> |
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|
520 |
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Documented the "process" global object.
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|
521 |
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Documented the "process" global object.
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|
522 <para> |
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Documented the "process" global object.
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|
523 <list type="tag"> |
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Documented the "process" global object.
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|
524 |
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|
525 <tag-name id="process_argv"><literal>process.argv</literal></tag-name> |
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Documented the "process" global object.
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|
526 <tag-desc> |
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|
527 Returns an array that contains the command line arguments |
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Documented the "process" global object.
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|
528 passed when the current process was launched. |
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Documented the "process" global object.
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529 </tag-desc> |
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Documented the "process" global object.
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|
530 |
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Documented the "process" global object.
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|
531 <tag-name id="process_env"><literal>process.env</literal></tag-name> |
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Documented the "process" global object.
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|
532 <tag-desc> |
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Documented the "process" global object.
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|
533 Returns an object containing the user environment. |
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Documented the "process" global object.
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|
534 <note> |
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|
535 By default, nginx removes all environment variables inherited |
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Documented the "process" global object.
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|
536 from its parent process except the TZ variable. |
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Documented the "process" global object.
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|
537 Use the <link doc="../ngx_core_module.xml" id="env"/> directive |
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Documented the "process" global object.
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|
538 to preserve some of the inherited variables. |
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|
539 </note> |
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|
540 </tag-desc> |
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parents:
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diff
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|
541 |
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2394
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|
542 <tag-name id="process_pid"><literal>process.pid</literal></tag-name> |
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Documented the "process" global object.
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parents:
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|
543 <tag-desc> |
dbf68c949522
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|
544 Returns the PID of the current process. |
dbf68c949522
Documented the "process" global object.
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|
545 </tag-desc> |
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Documented the "process" global object.
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|
546 |
dbf68c949522
Documented the "process" global object.
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parents:
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diff
changeset
|
547 <tag-name id="process_ppid"><literal>process.ppid</literal></tag-name> |
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Documented the "process" global object.
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parents:
2394
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|
548 <tag-desc> |
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Documented the "process" global object.
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changeset
|
549 Returns the PID of the current parent process. |
dbf68c949522
Documented the "process" global object.
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|
550 </tag-desc> |
dbf68c949522
Documented the "process" global object.
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|
551 |
dbf68c949522
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|
552 </list> |
dbf68c949522
Documented the "process" global object.
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diff
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|
553 </para> |
dbf68c949522
Documented the "process" global object.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
554 |
dbf68c949522
Documented the "process" global object.
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parents:
2394
diff
changeset
|
555 </section> |
dbf68c949522
Documented the "process" global object.
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parents:
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diff
changeset
|
556 |
dbf68c949522
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diff
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|
557 </section> |
dbf68c949522
Documented the "process" global object.
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parents:
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diff
changeset
|
558 |
dbf68c949522
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2394
diff
changeset
|
559 |
2186
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
560 <section id="string" name="String"> |
8e2b3aadc3ce
Added njs String object.
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diff
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|
561 |
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parents:
2183
diff
changeset
|
562 <para> |
2315
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Corrected language in njs.
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parents:
2313
diff
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|
563 There are two types of strings in njs: a Unicode string (default) and |
ae56e4613280
Corrected language in njs.
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|
564 a byte string. |
2186
8e2b3aadc3ce
Added njs String object.
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|
565 </para> |
8e2b3aadc3ce
Added njs String object.
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|
566 |
8e2b3aadc3ce
Added njs String object.
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diff
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|
567 <para> |
2315
ae56e4613280
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diff
changeset
|
568 A Unicode string corresponds to an ECMAScript string |
2186
8e2b3aadc3ce
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diff
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|
569 which contains Unicode characters. |
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Added njs String object.
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parents:
2183
diff
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|
570 </para> |
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Added njs String object.
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parents:
2183
diff
changeset
|
571 |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
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|
572 <para> |
2315
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changeset
|
573 Byte strings contain a sequence of bytes |
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Yaroslav Zhuravlev <yar@nginx.com>
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574 and are used to serialize Unicode strings |
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575 to external data and deserialize from external sources. |
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576 For example, the <link id="string_toutf8">toUTF8()</link> method serializes |
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577 a Unicode string to a byte string using UTF8 encoding: |
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578 <example> |
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|
579 >> '£'.toUTF8().toString('hex') |
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|
580 'c2a3' /* C2 A3 is the UTF8 representation of 00A3 ('£') code point */ |
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581 </example> |
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|
582 The <link id="string_tobytes">toBytes()</link> method serializes |
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583 a Unicode string with code points up to 255 into a byte string, |
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584 otherwise, <literal>null</literal> is returned: |
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|
585 <example> |
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|
586 >> '£'.toBytes().toString('hex') |
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|
587 'a3' /* a3 is a byte equal to 00A3 ('£') code point */ |
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|
588 </example> |
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|
589 Only byte strings can be converted to different encodings. |
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|
590 For example, a string cannot be encoded to <literal>hex</literal> directly: |
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|
591 <example> |
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parents:
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|
592 >> 'αβγδ'.toString('base64') |
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|
593 TypeError: argument must be a byte string |
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|
594 at String.prototype.toString (native) |
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|
595 at main (native) |
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|
596 </example> |
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|
597 To convert a Unicode string to hex, |
8e2b3aadc3ce
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|
598 first, it should be converted to a byte string and then to hex: |
8e2b3aadc3ce
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|
599 <example> |
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|
600 >> 'αβγδ'.toUTF8().toString('base64') |
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|
601 'zrHOss6zzrQ=' |
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|
602 </example> |
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|
603 |
8e2b3aadc3ce
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|
604 <list type="tag"> |
8e2b3aadc3ce
Added njs String object.
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|
605 |
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|
606 <tag-name id="string_bytesfrom"><literal>String.bytesFrom(<value>array</value> |
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607 | <value>string</value>, <value>encoding</value>)</literal></tag-name> |
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|
608 <tag-desc> |
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|
609 Creates a byte string either from an array that contains octets, |
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610 or from an encoded string |
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Updated links to changes.xml in njs Reference.
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611 (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
2211
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612 The encoding can be |
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613 <literal>hex</literal>, |
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|
614 <literal>base64</literal>, and |
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|
615 <literal>base64url</literal>. |
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|
616 <example> |
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617 >> String.bytesFrom([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]) |
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618 'buffer' |
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|
619 |
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|
620 >> String.bytesFrom('YnVmZmVy', 'base64') |
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621 'buffer' |
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622 </example> |
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623 </tag-desc> |
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624 |
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625 <tag-name id="string_frombytes"><literal>String.prototype.fromBytes(<value>start</value>[, |
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626 <value>end</value>])</literal></tag-name> |
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627 <tag-desc> |
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628 Returns a new Unicode string from a byte string |
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629 where each byte is replaced with a corresponding Unicode code point. |
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630 </tag-desc> |
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631 |
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632 <tag-name id="string_fromutf8"><literal>String.prototype.fromUTF8(<value>start</value>[, |
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633 <value>end</value>])</literal></tag-name> |
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634 <tag-desc> |
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635 Converts a byte string containing a valid UTF8 string |
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636 into a Unicode string, |
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637 otherwise <literal>null</literal> is returned. |
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638 </tag-desc> |
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|
639 |
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|
640 <tag-name id="string_tobytes"><literal>String.prototype.toBytes(start[, |
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641 end])</literal></tag-name> |
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642 <tag-desc> |
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643 Serializes a Unicode string to a byte string. |
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644 Returns <literal>null</literal> if a character larger than 255 is |
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645 found in the string. |
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646 </tag-desc> |
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|
647 |
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648 <tag-name><literal>String.prototype.toString([<value>encoding</value>])</literal></tag-name> |
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|
649 <tag-desc> |
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650 <para> |
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651 If no <literal>encoding</literal> is specified, |
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|
652 returns a specified Unicode string or byte string as in ECMAScript. |
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653 </para> |
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|
654 |
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|
655 <para> |
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656 If <literal>encoding</literal> is specified, |
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|
657 encodes a <link id="string_tobytes">byte string</link> to |
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658 <literal>hex</literal>, |
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|
659 <literal>base64</literal>, or |
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660 <literal>base64url</literal>. |
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661 </para> |
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|
662 <example> |
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663 >> 'αβγδ'.toUTF8().toString('base64url') |
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664 'zrHOss6zzrQ' |
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665 </example> |
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666 </tag-desc> |
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667 |
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668 <tag-name id="string_toutf8"><literal>String.prototype.toUTF8(<value>start</value>[, |
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669 <value>end</value>])</literal></tag-name> |
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670 <tag-desc> |
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671 Serializes a Unicode string |
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672 to a byte string using UTF8 encoding. |
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|
673 <example> |
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674 >> 'αβγδ'.toUTF8().length |
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675 8 |
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676 >> 'αβγδ'.length |
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677 4 |
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678 </example> |
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679 </tag-desc> |
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680 |
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681 </list> |
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682 </para> |
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|
683 |
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|
684 </section> |
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|
685 |
8e2b3aadc3ce
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|
686 |
2177 | 687 <section id="crypto" name="Crypto"> |
688 | |
689 <para> | |
690 The Crypto module provides cryptographic functionality support. | |
691 The Crypto module object is returned by <literal>require('crypto')</literal>. | |
692 </para> | |
693 | |
694 <para> | |
695 <list type="tag"> | |
696 | |
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|
697 <tag-name id="crypto_createhash"><literal>crypto.createHash(<value>algorithm</value>)</literal></tag-name> |
2177 | 698 <tag-desc> |
699 Creates and returns a <link id="crypto_hash">Hash</link> object | |
700 that can be used to generate hash digests | |
701 using the given <value>algorithm</value>. | |
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702 The algorithm can be |
2177 | 703 <literal>md5</literal>, |
704 <literal>sha1</literal>, and | |
705 <literal>sha256</literal>. | |
706 </tag-desc> | |
707 | |
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708 <tag-name id="crypto_createhmac"><literal>crypto.createHmac(<value>algorithm</value>, |
2177 | 709 <value>secret key</value>)</literal></tag-name> |
710 <tag-desc> | |
711 Creates and returns an <link id="crypto_hmac">HMAC</link> object | |
712 that uses the given <value>algorithm</value> and <value>secret key</value>. | |
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713 The algorithm can be |
2177 | 714 <literal>md5</literal>, |
715 <literal>sha1</literal>, and | |
716 <literal>sha256</literal>. | |
717 </tag-desc> | |
718 | |
719 </list> | |
720 </para> | |
721 | |
722 | |
723 <section id="crypto_hash" name="Hash"> | |
724 | |
725 <para> | |
726 <list type="tag"> | |
727 | |
728 <tag-name><literal>hash.update(<value>data</value>)</literal></tag-name> | |
729 <tag-desc> | |
730 Updates the hash content with the given <value>data</value>. | |
731 </tag-desc> | |
732 | |
733 <tag-name><literal>hash.digest([<value>encoding</value>])</literal></tag-name> | |
734 <tag-desc> | |
735 Calculates the digest of all of the data passed using | |
736 <literal>hash.update()</literal>. | |
737 The encoding can be | |
738 <literal>hex</literal>, | |
739 <literal>base64</literal>, and | |
740 <literal>base64url</literal>. | |
741 If encoding is not provided, a byte string is returned. | |
742 </tag-desc> | |
743 | |
744 </list> | |
745 </para> | |
746 | |
747 <para> | |
748 <example> | |
749 >> var cr = require('crypto') | |
750 undefined | |
751 | |
752 >> cr.createHash('sha1').update('A').update('B').digest('base64url') | |
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753 'BtlFlCqiamG-GMPiK_GbvKjdK10' |
2177 | 754 </example> |
755 </para> | |
756 | |
757 </section> | |
758 | |
759 | |
760 <section id="crypto_hmac" name="HMAC"> | |
761 | |
762 <para> | |
763 <list type="tag"> | |
764 | |
765 <tag-name><literal>hmac.update(<value>data</value>)</literal></tag-name> | |
766 <tag-desc> | |
767 Updates the HMAC content with the given <value>data</value>. | |
768 </tag-desc> | |
769 | |
770 <tag-name><literal>hmac.digest([<value>encoding</value>])</literal></tag-name> | |
771 <tag-desc> | |
772 Calculates the HMAC digest of all of the data passed using | |
773 <literal>hmac.update()</literal>. | |
774 The encoding can be | |
775 <literal>hex</literal>, | |
776 <literal>base64</literal>, and | |
777 <literal>base64url</literal>. | |
778 If encoding is not provided, a byte string is returned. | |
779 </tag-desc> | |
780 </list> | |
781 </para> | |
782 | |
783 <para> | |
784 <example> | |
785 >> var cr = require('crypto') | |
786 undefined | |
787 | |
788 >> cr.createHmac('sha1', 'secret.key').update('AB').digest('base64url') | |
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789 'Oglm93xn23_MkiaEq_e9u8zk374' |
2177 | 790 </example> |
791 </para> | |
792 | |
793 </section> | |
794 | |
795 </section> | |
796 | |
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797 <section id="njs_api_timers" name="Timers"> |
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798 |
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799 <para> |
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800 |
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801 <list type="tag"> |
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802 |
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803 <tag-name id="cleartimeout"><literal>clearTimeout(<value>timeout</value>)</literal></tag-name> |
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804 <tag-desc> |
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805 Cancels a <literal>timeout</literal> object |
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806 created by <link id="settimeout">setTimeout()</link>. |
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807 </tag-desc> |
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808 |
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809 <tag-name id="settimeout"><literal>setTimeout(<value>function</value>, |
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810 <value>ms</value>[, <value>arg1</value>, <value>argN</value>])</literal></tag-name> |
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811 <tag-desc> |
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812 Calls a <literal>function</literal> |
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813 after a specified number of <literal>milliseconds</literal>. |
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814 One or more optional <literal>arguments</literal> |
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815 can be passed to the specified function. |
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816 Returns a <literal>timeout</literal> object. |
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817 <example> |
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818 function handler(v) |
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819 { |
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820 // ... |
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821 } |
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822 |
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823 t = setTimeout(handler, 12); |
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824 |
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825 // ... |
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826 |
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827 clearTimeout(t); |
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828 </example> |
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829 </tag-desc> |
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830 |
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831 </list> |
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832 </para> |
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833 |
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834 </section> |
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835 |
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836 |
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837 <section id="njs_api_fs" name="File System"> |
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838 |
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839 <para> |
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840 The File System module provides operations with files. |
2507 | 841 </para> |
842 | |
843 <para> | |
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844 The module object is returned by <literal>require('fs')</literal>. |
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845 Since <link doc="changes.xml" id="njs0.3.9">0.3.9</link>, |
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846 promissified versions of file system methods are available through |
2507 | 847 <literal>require('fs').promises</literal> object: |
848 <example> | |
849 > var fs = require('fs').promises; | |
850 undefined | |
851 > fs.readFile("/file/path").then((data)=>console.log(data)) | |
852 <file data> | |
853 </example> | |
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854 <list type="tag"> |
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855 |
2507 | 856 <tag-name id="fs_accesssync"><literal>accessSync(<value>path</value>[, |
857 <value>mode</value>])</literal></tag-name> | |
858 <tag-desc> | |
859 Synchronously tests permissions for a file or directory | |
860 specified in the <literal>path</literal> | |
861 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). | |
862 If the check fails, an error will be returned, | |
863 otherwise, the method will return undefined. | |
864 <list type="tag"> | |
865 | |
866 <tag-name><literal>mode</literal></tag-name> | |
867 <tag-desc> | |
868 by default is <link id="access_const"><literal>fs.constants.F_OK</literal></link>. | |
869 The mode argument is an optional integer | |
870 that specifies the accessibility checks to be performed. | |
871 <example> | |
872 try { | |
873 fs.accessSync('/file/path', fs.constants.R_OK | fs.constants.W_OK); | |
874 console.log('has access'); | |
875 } catch (e) { | |
876 console.log('no access');) | |
877 } | |
878 </example> | |
879 </tag-desc> | |
880 | |
881 </list> | |
882 </tag-desc> | |
883 | |
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884 <tag-name id="appendfilesync"><literal>appendFileSync(<value>filename</value>, |
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885 <value>data</value>[, <value>options</value>])</literal></tag-name> |
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886 <tag-desc> |
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887 Synchronously appends specified <literal>data</literal> |
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888 to a file with provided <literal>filename</literal>. |
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889 If the file does not exist, it will be created. |
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890 The <literal>options</literal> parameter is expected to be |
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891 an object with the following keys: |
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892 <list type="tag"> |
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893 |
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894 <tag-name><literal>mode</literal></tag-name> |
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895 <tag-desc> |
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896 mode option, by default is <literal>0o666</literal> |
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897 </tag-desc> |
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898 |
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899 <tag-name><literal>flag</literal></tag-name> |
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900 <tag-desc> |
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901 file system <link id="njs_api_fs_flags">flag</link>, |
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902 by default is <literal>a</literal> |
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903 </tag-desc> |
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904 |
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905 </list> |
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906 </tag-desc> |
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907 |
2563
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908 <tag-name id="fs_mkdirsync"><literal>mkdirSync(<value>path</value>[, |
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909 <value>options</value>])</literal></tag-name> |
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910 <tag-desc> |
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911 Synchronously creates a directory at the specified <literal>path</literal> |
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912 (<link doc="changes.xml" id="njs0.4.2">0.4.2</link>). |
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913 The <literal>options</literal> parameter is expected to be an |
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914 <literal>integer</literal> that specifies |
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915 the <link id="fs_mkdirsync_mode">mode</link>, |
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916 or an object with the following keys: |
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917 <list type="tag"> |
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918 |
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919 <tag-name id="fs_mkdirsync_mode"><literal>mode</literal></tag-name> |
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changeset
|
920 <tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
921 mode option, by default is <literal>0o777</literal>. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
922 </tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
923 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
924 </list> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
925 </tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
926 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
927 <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
|
928 <value>options</value>])</literal></tag-name> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
929 <tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
930 Synchronously reads the contents of a directory |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
931 at the specified <literal>path</literal> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
932 (<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
|
933 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
|
934 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
|
935 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
|
936 <list type="tag"> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
937 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
938 <tag-name id="fs_readdirsync_encoding"><literal>encoding</literal></tag-name> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
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|
939 <tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
940 encoding, by default is not specified. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
941 The encoding can be <literal>utf8</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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|
942 </tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
943 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
944 <tag-name id="fs_readdirsync_withfiletypes"><literal>withFileTypes</literal></tag-name> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
945 <tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
946 if set to <literal>true</literal>, the files array will contain |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
947 <link id="fs_dirent"><literal>fs.Dirent</literal></link> objects, |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
948 by default is <literal>false</literal>. |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
949 </tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
950 |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
951 </list> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2546
diff
changeset
|
952 </tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
953 |
2204
001f2d905fd9
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diff
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|
954 <tag-name id="readfilesync"><literal>readFileSync(<value>filename</value>[, |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
955 <value>options</value>])</literal></tag-name> |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
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|
956 <tag-desc> |
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Documented fileSystem methods in njs.
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diff
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|
957 Synchronously returns the contents of the file |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
958 with provided <literal>filename</literal>. |
001f2d905fd9
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parents:
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diff
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|
959 The <literal>options</literal> parameter holds |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
960 <literal>string</literal> that specifies encoding. |
001f2d905fd9
Documented fileSystem methods in njs.
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parents:
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diff
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|
961 If not specified, a <link id="string_tobytes">byte string</link> is returned. |
001f2d905fd9
Documented fileSystem methods in njs.
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parents:
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diff
changeset
|
962 If <literal>utf8</literal> encoding is specified, a Unicode string is returned. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
963 Otherwise, <literal>options</literal> is expected to be |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
964 an object with the following keys: |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
965 <list type="tag"> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
966 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
967 <tag-name><literal>encoding</literal></tag-name> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
968 <tag-desc> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
969 encoding, by default is not specified. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
970 The encoding can be <literal>utf8</literal> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
971 </tag-desc> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
972 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
973 <tag-name><literal>flag</literal></tag-name> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
974 <tag-desc> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
975 file system <link id="njs_api_fs_flags">flag</link>, |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
976 by default is <literal>r</literal> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
977 </tag-desc> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
978 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
979 </list> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
980 <example> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
981 >> var fs = require('fs') |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
982 undefined |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
983 >> var file = fs.readFileSync('/file/path.tar.gz') |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
984 undefined |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
985 >> var gzipped = /^\x1f\x8b/.test(file); gzipped |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
986 true |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
987 </example> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
988 </tag-desc> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
989 |
2507 | 990 <tag-name id="fs_realpathsync"><literal>realpathSync(<value>path</value>[, |
991 <value>options</value>])</literal></tag-name> | |
992 <tag-desc> | |
993 Synchronously computes the canonical pathname by resolving | |
994 <literal>.</literal>, <literal>..</literal> and symbolic links using | |
2508
d3d5b67a1462
Language fixes in njs file system methods.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2507
diff
changeset
|
995 <link url="http://man7.org/linux/man-pages/man3/realpath.3.html">realpath(3)</link>. |
2507 | 996 The <literal>options</literal> argument can be a string specifying an encoding, |
997 or an object with an encoding property specifying the character encoding | |
998 to use for the path passed to the callback | |
999 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). | |
1000 </tag-desc> | |
1001 | |
2509
827a6d7fe108
Reordered alphabetically njs file system methods.
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parents:
2508
diff
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|
1002 <tag-name id="fs_renamesync"><literal>renameSync(<value>oldPath</value>, |
827a6d7fe108
Reordered alphabetically njs file system methods.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2508
diff
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|
1003 <value>newPath</value>)</literal></tag-name> |
827a6d7fe108
Reordered alphabetically njs file system methods.
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parents:
2508
diff
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|
1004 <tag-desc> |
827a6d7fe108
Reordered alphabetically njs file system methods.
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diff
changeset
|
1005 Synchronously changes the name or location of a file from |
827a6d7fe108
Reordered alphabetically njs file system methods.
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parents:
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diff
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|
1006 <literal>oldPath</literal> to <literal>newPath</literal> |
827a6d7fe108
Reordered alphabetically njs file system methods.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2508
diff
changeset
|
1007 (<link doc="changes.xml" id="njs0.3.4">0.3.4</link>). |
827a6d7fe108
Reordered alphabetically njs file system methods.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1008 <example> |
827a6d7fe108
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|
1009 >> var fs = require('fs') |
827a6d7fe108
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|
1010 undefined |
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|
1011 >> var file = fs.renameSync('hello.txt', 'HelloWorld.txt') |
827a6d7fe108
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|
1012 undefined |
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|
1013 </example> |
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Reordered alphabetically njs file system methods.
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|
1014 </tag-desc> |
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Reordered alphabetically njs file system methods.
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|
1015 |
2563
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|
1016 <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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parents:
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|
1017 <tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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parents:
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diff
changeset
|
1018 Synchronously removes a directory at the specified <literal>path</literal> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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parents:
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|
1019 (<link doc="changes.xml" id="njs0.4.2">0.4.2</link>). |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1020 </tag-desc> |
428a8cf1911b
Documented mkdirSync, readdirSync, rmdirSync, fs.Dirent in njs.
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|
1021 |
2509
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|
1022 <tag-name id="fs_symlinksync"><literal>symlinkSync(<value>target</value>, |
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|
1023 <value>path</value>)</literal></tag-name> |
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|
1024 <tag-desc> |
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|
1025 Synchronously creates the link called <literal>path</literal> |
827a6d7fe108
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|
1026 pointing to <literal>target</literal> using |
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Reordered alphabetically njs file system methods.
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|
1027 <link url="http://man7.org/linux/man-pages/man2/symlink.2.html">symlink(2)</link> |
827a6d7fe108
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|
1028 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). |
827a6d7fe108
Reordered alphabetically njs file system methods.
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|
1029 Relative targets are relative to the link’s parent directory. |
827a6d7fe108
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|
1030 </tag-desc> |
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|
1031 |
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|
1032 <tag-name id="fs_unlinksync"><literal>unlinkSync(<value>path</value>)</literal></tag-name> |
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|
1033 <tag-desc> |
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changeset
|
1034 Synchronously unlinks a file by <literal>path</literal> |
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1035 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). |
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|
1036 </tag-desc> |
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|
1037 |
2204
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1038 <tag-name id="writefilesync"><literal>writeFileSync(<value>filename</value>, |
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1039 <value>data</value>[, |
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|
1040 <value>options</value>])</literal></tag-name> |
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1041 <tag-desc> |
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|
1042 Synchronously writes <literal>data</literal> to a file |
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|
1043 with provided <literal>filename</literal>. |
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|
1044 If the file does not exist, it will be created, |
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|
1045 if the file exists, it will be replaced. |
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1046 The <literal>options</literal> parameter is expected to be |
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1047 an object with the following keys: |
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|
1048 <list type="tag"> |
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|
1049 <tag-name><literal>mode</literal></tag-name> |
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1050 <tag-desc> |
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|
1051 mode option, by default is <literal>0o666</literal> |
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|
1052 </tag-desc> |
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|
1053 |
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|
1054 <tag-name><literal>flag</literal></tag-name> |
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|
1055 <tag-desc> |
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|
1056 file system <link id="njs_api_fs_flags">flag</link>, |
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|
1057 by default is <literal>w</literal> |
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Documented fileSystem methods in njs.
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|
1058 </tag-desc> |
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|
1059 |
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|
1060 </list> |
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|
1061 <example> |
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1062 >> var fs = require('fs') |
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|
1063 undefined |
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|
1064 >> var file = fs.writeFileSync('hello.txt', 'Hello world') |
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|
1065 undefined |
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|
1066 </example> |
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1067 </tag-desc> |
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|
1068 |
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|
1069 </list> |
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1070 </para> |
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|
1071 |
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|
1072 |
2563
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|
1073 <section id="fs_dirent" name="fs.Dirent"> |
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|
1074 |
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|
1075 <para> |
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|
1076 <literal>fs.Dirent</literal> is a representation of a directory entry— |
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|
1077 a file or a subdirectory. |
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|
1078 When |
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|
1079 <link id="fs_readdirsync"><literal>readdirSync()</literal></link> |
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|
1080 is called with the |
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|
1081 <link id="fs_readdirsync_withfiletypes"><literal>withFileTypes</literal></link> |
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|
1082 option, |
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|
1083 the resulting array contains <literal>fs.Dirent</literal> objects. |
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|
1084 |
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|
1085 <list type= "bullet" compact="no"> |
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|
1086 |
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|
1087 <listitem> |
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|
1088 <literal>dirent.isBlockDevice()</literal>—returns |
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|
1089 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
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|
1090 a block device. |
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|
1091 </listitem> |
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|
1092 |
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|
1093 <listitem> |
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|
1094 <literal>dirent.isCharacterDevice()</literal>—returns |
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1095 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
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|
1096 a character device. |
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1097 </listitem> |
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|
1098 |
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|
1099 <listitem> |
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1100 <literal>dirent.isDirectory()</literal>—returns |
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1101 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
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|
1102 a file system directory. |
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|
1103 </listitem> |
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|
1104 |
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|
1105 <listitem> |
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|
1106 <literal>dirent.isFIFO()</literal>—returns |
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|
1107 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
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|
1108 a first-in-first-out (FIFO) pipe. |
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|
1109 </listitem> |
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|
1110 |
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|
1111 <listitem> |
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1112 <literal>dirent.isFile()</literal>—returns |
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1113 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
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1114 a regular file. |
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1115 </listitem> |
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1116 |
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1117 <listitem> |
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1118 <literal>dirent.isSocket()</literal>—returns |
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1119 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
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|
1120 a socket. |
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1121 </listitem> |
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1122 |
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1123 <listitem> |
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1124 <literal>dirent.isSymbolicLink()</literal>—returns |
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1125 <literal>true</literal> if the <literal>fs.Dirent</literal> object describes |
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1126 a symbolic link. |
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1127 </listitem> |
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1128 |
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|
1129 <listitem> |
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1130 <literal>dirent.name</literal>— |
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|
1131 the name of the file <literal>fs.Dirent</literal> object refers to. |
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1132 </listitem> |
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|
1133 |
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|
1134 </list> |
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|
1135 </para> |
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|
1136 |
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|
1137 </section> |
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1138 |
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|
1139 |
2507 | 1140 <section id="access_const" name="File Access Constants"> |
1141 | |
1142 <para> | |
1143 The <link id="fs_accesssync"><literal>access()</literal></link> method | |
1144 can accept the following flags. | |
1145 These flags are exported by <literal>fs.constants</literal>: | |
1146 | |
1147 <list type= "bullet" compact="no"> | |
1148 | |
1149 <listitem> | |
1150 <literal>F_OK</literal>—indicates that the file | |
1151 is visible to the calling process, | |
1152 used by default if no mode is specified | |
1153 </listitem> | |
1154 | |
1155 <listitem> | |
1156 <literal>R_OK</literal>—indicates that the file can be | |
1157 read by the calling process | |
1158 </listitem> | |
1159 | |
1160 <listitem> | |
1161 <literal>W_OK</literal>—indicates that the file can be | |
1162 written by the calling process | |
1163 </listitem> | |
1164 | |
1165 <listitem> | |
1166 <literal>X_OK</literal>—indicates that the file can be | |
1167 executed by the calling process | |
1168 </listitem> | |
1169 | |
1170 </list> | |
1171 </para> | |
1172 | |
1173 </section> | |
1174 | |
1175 | |
2204
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1176 <section id="njs_api_fs_flags" name="File System Flags"> |
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1177 |
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1178 <para> |
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1179 The <literal>flag</literal> option can accept the following values: |
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1180 |
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1181 <list type= "bullet" compact="no"> |
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1182 |
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1183 <listitem> |
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1184 <literal>a</literal>—open a file for appending. |
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1185 The file is created if it does not exist |
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1186 </listitem> |
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1187 |
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1188 <listitem> |
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1189 <literal>ax</literal>—the same as <literal>a</literal> |
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1190 but fails if the file already exists |
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1191 </listitem> |
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1192 |
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1193 <listitem> |
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1194 <literal>a+</literal>—open a file for reading and appending. |
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1195 If the file does not exist, it will be created |
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1196 </listitem> |
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1197 |
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1198 <listitem> |
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1199 <literal>ax+</literal>—the same as <literal>a+</literal> |
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1200 but fails if the file already exists |
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1201 </listitem> |
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1202 |
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1203 <listitem> |
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1204 <literal>as</literal>—open a file for appending in synchronous mode. |
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1205 If the file does not exist, it will be created |
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1206 </listitem> |
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1207 |
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1208 <listitem> |
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1209 <literal>as+</literal>—open a file for reading and appending |
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1210 in synchronous mode. |
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1211 If the file does not exist, it will be created |
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1212 </listitem> |
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1213 |
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1214 <listitem> |
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1215 <literal>r</literal>—open a file for reading. |
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1216 An exception occurs if the file does not exist |
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1217 </listitem> |
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1218 |
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1219 <listitem> |
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1220 <literal>r+</literal>—open a file for reading and writing. |
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1221 An exception occurs if the file does not exist |
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1222 </listitem> |
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1223 |
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1224 <listitem> |
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1225 <literal>rs+</literal>—open a file for reading and writing |
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1226 in synchronous mode. |
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1227 Instructs the operating system to bypass the local file system cache |
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1228 </listitem> |
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1229 |
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1230 <listitem> |
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1231 <literal>w</literal>—open a file for writing. |
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1232 If the file does not exist, it will be created. |
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1233 If the file exists, it will be replaced |
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1234 </listitem> |
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1235 |
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1236 <listitem> |
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1237 <literal>wx</literal>—the same as <literal>w</literal> |
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1238 but fails if the file already exists |
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1239 </listitem> |
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1240 |
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1241 <listitem> |
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1242 <literal>w+</literal>—open a file for reading and writing. |
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1243 If the file does not exist, it will be created. |
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1244 If the file exists, it will be replaced |
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1245 </listitem> |
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1246 |
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1247 <listitem> |
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1248 <literal>wx+</literal>—the same as <literal>w+</literal> |
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1249 but fails if the file already exists |
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1250 </listitem> |
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1251 |
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1252 </list> |
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1253 </para> |
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1254 |
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1255 </section> |
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1256 |
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1257 </section> |
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1258 |
2176 | 1259 </section> |
1260 | |
2175
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1261 </article> |