Mercurial > SimpleWebPresenter

annotate common-functions.inc @ 89:fd39d7d5e9be

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Branch merge.
author Tom Fredrik "BFG" Klaussen <bfg@blenning.no>
date Wed, 17 Oct 2012 20:43:25 +0200
parents 7a9c45b53866
children aafc23919e79
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1 <?php
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2 /**
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3 * @file
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4 * Functionality which doesn't belong anywhere else
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5 */
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6 include_once 'ScriptIncludeCache.inc';
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7
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8 /// @cond
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9 $baseDir = dirname(__FILE__);
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10
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11 $cache = ScriptIncludeCache::instance(__FILE__);
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12 $cache->includeOnce('StatusCodes.inc', $baseDir);
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13 /// @endcond
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14
88
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15 class RequestException extends RuntimeException
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16 {
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17 private $_info;
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18
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19 function __construct($info)
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20 {
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21 $this->_info = $info;
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22 if (array_key_exists('error', $info)) {
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23 parent::__construct($info['error']);
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24 }
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25 }
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26
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27 function info()
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28 {
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29 return $this->_info;
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30 }
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31 }
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32
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33 /**
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34 * Generates a representation for an array of key => value pairs
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35 *
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36 * @note Behaviour is undefined if value is a composite structure.
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37 *
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38 * @param $map the input array
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39 * @return a string representation that may be eval'ed
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40 */
46
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41 function repMapString($map)
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42 {
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43 $opt = 'array(';
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44 $start = True;
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45
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46 foreach($map as $param => $value) {
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47 if ($start) {
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48 $start = False;
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49 $opt .= "\"${param}\" => \"${value}\"";
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50 }
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51 else {
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52 $opt .= ", \"${param}\" => \"${value}\"";
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53 }
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54 }
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55 $opt .= ')';
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56 return $opt;
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57 }
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58
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59 /**
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60 * Get the location on the server where the top level script is
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61 * located
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62 *
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63 * @return directory
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64 */
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65 function basePath()
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66 {
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67 $l = strrpos($_SERVER['SCRIPT_FILENAME'], $_SERVER['SCRIPT_NAME']);
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68 return substr($_SERVER['SCRIPT_FILENAME'], 0, $l);
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69 }
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70
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71 /**
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72 * Loads a file
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73 *
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74 * @param $sFilename name of the file to load
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75 * @param $sCharset the character encoding of the file
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76 *
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77 * @todo make this function throw instead of returning codes
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78 *
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79 * @return the contents of the file, or a status code (-3 if file does
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80 * not exists, if file could not be opened -2)
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81 */
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82 function loadFile($sFilename, $sCharset = 'UTF-8')
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83 {
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84 if (floatval(phpversion()) >= 4.3) {
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85 if (!file_exists($sFilename))
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86 return -3;
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87 $sData = file_get_contents($sFilename);
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88 }
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89 else {
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90 if (!file_exists($sFilename))
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91 return -3;
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92 $rHandle = fopen($sFilename, 'r');
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93 if (!$rHandle)
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94 return -2;
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95
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96 $sData = '';
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97 while(!feof($rHandle))
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98 $sData .= fread($rHandle, filesize($sFilename));
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99 fclose($rHandle);
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100 }
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101 if ($sEncoding = mb_detect_encoding($sData, 'auto', true) != $sCharset) {
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102 if ($sEncoding != 1) {
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103 $sData = mb_convert_encoding($sData, $sCharset, $sEncoding);
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104 }
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105 }
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106 return $sData;
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107 }
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108
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109 /**
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110 * Generate a status page and exit
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111 *
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112 * @param $errorText the text to be displayed in the body
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113 * @param $errorCode the status code to be served
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114 */
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115 function errorPage($errorText, $errorCode = 403)
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116 {
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117 header(StatusCodes::httpHeaderFor($errorCode));
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118 print "<div id=\"page\"><h1>${errorText}</h1></div>";
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119 exit;
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120 }
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121
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122 /**
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123 * Generates an URL for the specified parameters
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124 *
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125 * @param $urlParams an associative array of the values already set
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126 * @param $keys a set of values to override $urlParams
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127 *
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128 * @param $nonQueryParams a list of keys, where values should be in
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129 * the URL, rather than the query part, note that the order is
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130 * important
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131 */
45
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132 function genUrl($urlParams, $keys = array(), $nonQueryParams = array()) {
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133 $out = '';
33
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134 $first = 1;
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135 $new_params = $urlParams;
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136 foreach($keys as $param => $val) {
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diff changeset
137 $new_params[$param] = $val;
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138 }
45
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diff changeset
139
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diff changeset
140 foreach($nonQueryParams as $nqp) {
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diff changeset
141 if (array_key_exists($nqp, $new_params)) {
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142 $val = $new_params[$nqp];
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diff changeset
143 if ($val)
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144 $out .= "/${val}";
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diff changeset
145 unset($new_params[$nqp]);
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146 }
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147 }
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diff changeset
148
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diff changeset
149 foreach($new_params as $param => $val) {
45
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diff changeset
150 if ($val) {
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diff changeset
151 if($first) {
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diff changeset
152 $first = 0;
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diff changeset
153 $out .= "?";
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154 }
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155 else
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156 $out .= "&amp;";
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diff changeset
157 $out .= urlencode($param) . '=' . urlencode($val);
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158 }
33
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159 }
45
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diff changeset
160
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161 return $out;
5
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162 }
6
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163
66
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164 /**
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165 * Retrieves a single subelement
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166 * @throw Exception if number of elements are different from 1
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167 *
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168 * @todo Throw more specific exception
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169 *
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170 * @param $obj the xml element to search in
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171 * @param $name the name of the element to search for
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diff changeset
172 */
6
6c0162497d56 Improved error reporting, and support for multilevel params.
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diff changeset
173 function getElementByTagName($obj, $name) {
33
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diff changeset
174 $elems = $obj->getElementsByTagName($name);
6
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diff changeset
175 if ($elems->length != 1) {
83
ff5fc61aa5ea Throw only specific exceptions, eg. non of type Exception base.
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176 throw new UnexpectedValueException("More than one tag with name \"${name}\"");
6
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diff changeset
177 }
33
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diff changeset
178 $elem = $elems->item(0);
6
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diff changeset
179 return $elem;
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diff changeset
180 }
8
19dfa6f3e2be Support for scripts.
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diff changeset
181
66
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diff changeset
182 /**
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183 * Checks if one string start with another string
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diff changeset
184 *
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diff changeset
185 * @param $haystack the string to search
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186 * @param $needle the string to search for
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diff changeset
187 *
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188 * @return bool if match
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diff changeset
189 */
45
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diff changeset
190 function startswith($haystack, $needle)
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diff changeset
191 {
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diff changeset
192 return strpos($haystack, $needle) === 0;
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193 }
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diff changeset
194
66
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195 /**
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196 * Checks if one string ends with another string
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diff changeset
197 *
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diff changeset
198 * @param $haystack the string to search
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199 * @param $needle the string to search for
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diff changeset
200 *
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diff changeset
201 * @return bool if match
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diff changeset
202 */
45
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diff changeset
203 function endsWith($haystack, $needle)
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diff changeset
204 {
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diff changeset
205 $l = strlen($haystack) - strlen($needle);
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diff changeset
206 return strrpos($haystack, $needle) === $l;
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diff changeset
207 }
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diff changeset
208
66
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diff changeset
209 /**
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210 * Queries a URL for headers
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diff changeset
211 *
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diff changeset
212 * @param $url the url to query
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diff changeset
213 * @return an associative array of all headers returned
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diff changeset
214 */
88
7a9c45b53866 Add possibility to validate using validator.w3.org
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diff changeset
215 function getHeaders($url, $timeout = 1)
45
6c2c6acba30c Support for hardcoding parameters.
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diff changeset
216 {
88
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diff changeset
217 $response = @http_head($url, array("timeout" => $timeout), $info);
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diff changeset
218
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diff changeset
219 if (array_key_exists('error', $info) && $info['error']) {
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diff changeset
220 throw new RequestException($info);
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diff changeset
221 }
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diff changeset
222
45
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diff changeset
223 $headers = array();
73
947d53f95ccd Refactor Sitemap into a separate class.
Tom Fredrik "BFG" Klaussen <bfg@blenning.no>
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diff changeset
224 $response = trim($response);
45
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diff changeset
225 $str = explode("\n", $response);
73
947d53f95ccd Refactor Sitemap into a separate class.
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diff changeset
226 $headers[''] = trim($str[0]);
45
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diff changeset
227 foreach($str as $kv) {
6c2c6acba30c Support for hardcoding parameters.
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diff changeset
228 $p = strpos($kv, ":");
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Tom Fredrik "BFG" Klaussen <bfg@blenning.no>
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diff changeset
229 if ($p) {
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diff changeset
230 $key = substr($kv, 0, $p);
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diff changeset
231 $value = trim(substr($kv, $p + 1));
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diff changeset
232 $headers[$key] = $value;
6c2c6acba30c Support for hardcoding parameters.
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diff changeset
233 }
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diff changeset
234 }
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diff changeset
235 return $headers;
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diff changeset
236 }
6c2c6acba30c Support for hardcoding parameters.
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diff changeset
237
66
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diff changeset
238 /**
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diff changeset
239 * Generates the query part of an URI
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diff changeset
240 *
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diff changeset
241 * @param $opts an associative array of options
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diff changeset
242 * @return a string that can be used for the query part of an URI
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diff changeset
243 */
45
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diff changeset
244 function opttostring($opts)
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diff changeset
245 {
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diff changeset
246 $str = '';
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diff changeset
247 foreach (array_keys($opts) as $key) {
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diff changeset
248 $value = $opts[$key];
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diff changeset
249 if ($str) {
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diff changeset
250 $str .= "&${key}=${value}";
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diff changeset
251 }
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diff changeset
252 else {
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diff changeset
253 $str = "?${key}=${value}";
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diff changeset
254 }
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diff changeset
255 }
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diff changeset
256 return $str;
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diff changeset
257 }
5
18aafb1a8986 Better handling of errors and globals.
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diff changeset
258 ?>