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1 <?php |
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2 |
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3 /** |
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4 * SimplePie |
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5 * |
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6 * A PHP-Based RSS and Atom Feed Framework. |
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7 * Takes the hard work out of managing a complete RSS/Atom solution. |
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8 * |
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9 * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors |
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10 * All rights reserved. |
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11 * |
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12 * Redistribution and use in source and binary forms, with or without modification, are |
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13 * permitted provided that the following conditions are met: |
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14 * |
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15 * * Redistributions of source code must retain the above copyright notice, this list of |
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16 * conditions and the following disclaimer. |
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17 * |
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18 * * Redistributions in binary form must reproduce the above copyright notice, this list |
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19 * of conditions and the following disclaimer in the documentation and/or other materials |
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20 * provided with the distribution. |
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21 * |
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22 * * Neither the name of the SimplePie Team nor the names of its contributors may be used |
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23 * to endorse or promote products derived from this software without specific prior |
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24 * written permission. |
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25 * |
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26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS |
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27 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
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28 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS |
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29 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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33 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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34 * POSSIBILITY OF SUCH DAMAGE. |
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35 * |
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36 * @package SimplePie |
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37 * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue |
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38 * @author Ryan Parman |
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39 * @author Sam Sneddon |
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40 * @author Ryan McCue |
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41 * @link http://simplepie.org/ SimplePie |
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42 * @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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43 */ |
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44 |
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45 namespace SimplePie\Parse; |
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46 |
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47 /** |
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48 * Date Parser |
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49 * |
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50 * @package SimplePie |
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51 * @subpackage Parsing |
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52 */ |
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53 class Date |
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54 { |
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55 /** |
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56 * Input data |
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57 * |
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58 * @access protected |
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59 * @var string |
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60 */ |
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61 public $date; |
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62 |
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63 /** |
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64 * List of days, calendar day name => ordinal day number in the week |
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65 * |
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66 * @access protected |
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67 * @var array |
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68 */ |
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69 public $day = [ |
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70 // English |
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71 'mon' => 1, |
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72 'monday' => 1, |
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73 'tue' => 2, |
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74 'tuesday' => 2, |
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75 'wed' => 3, |
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76 'wednesday' => 3, |
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77 'thu' => 4, |
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78 'thursday' => 4, |
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79 'fri' => 5, |
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80 'friday' => 5, |
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81 'sat' => 6, |
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82 'saturday' => 6, |
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83 'sun' => 7, |
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84 'sunday' => 7, |
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85 // Dutch |
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86 'maandag' => 1, |
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87 'dinsdag' => 2, |
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88 'woensdag' => 3, |
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89 'donderdag' => 4, |
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90 'vrijdag' => 5, |
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91 'zaterdag' => 6, |
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92 'zondag' => 7, |
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93 // French |
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94 'lundi' => 1, |
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95 'mardi' => 2, |
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96 'mercredi' => 3, |
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97 'jeudi' => 4, |
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98 'vendredi' => 5, |
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99 'samedi' => 6, |
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100 'dimanche' => 7, |
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101 // German |
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102 'montag' => 1, |
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103 'mo' => 1, |
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104 'dienstag' => 2, |
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105 'di' => 2, |
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106 'mittwoch' => 3, |
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107 'mi' => 3, |
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108 'donnerstag' => 4, |
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109 'do' => 4, |
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110 'freitag' => 5, |
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111 'fr' => 5, |
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112 'samstag' => 6, |
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113 'sa' => 6, |
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114 'sonnabend' => 6, |
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115 // AFAIK no short form for sonnabend |
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116 'so' => 7, |
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117 'sonntag' => 7, |
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118 // Italian |
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119 'lunedì' => 1, |
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120 'martedì' => 2, |
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121 'mercoledì' => 3, |
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122 'giovedì' => 4, |
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123 'venerdì' => 5, |
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124 'sabato' => 6, |
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125 'domenica' => 7, |
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126 // Spanish |
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127 'lunes' => 1, |
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128 'martes' => 2, |
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129 'miércoles' => 3, |
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130 'jueves' => 4, |
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131 'viernes' => 5, |
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132 'sábado' => 6, |
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133 'domingo' => 7, |
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134 // Finnish |
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135 'maanantai' => 1, |
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136 'tiistai' => 2, |
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137 'keskiviikko' => 3, |
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138 'torstai' => 4, |
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139 'perjantai' => 5, |
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140 'lauantai' => 6, |
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141 'sunnuntai' => 7, |
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142 // Hungarian |
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143 'hétfő' => 1, |
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144 'kedd' => 2, |
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145 'szerda' => 3, |
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146 'csütörtok' => 4, |
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147 'péntek' => 5, |
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148 'szombat' => 6, |
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149 'vasárnap' => 7, |
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150 // Greek |
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151 'Δευ' => 1, |
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152 'Τρι' => 2, |
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153 'Τετ' => 3, |
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154 'Πεμ' => 4, |
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155 'Παρ' => 5, |
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156 'Σαβ' => 6, |
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157 'Κυρ' => 7, |
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158 // Russian |
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159 'Пн.' => 1, |
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160 'Вт.' => 2, |
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161 'Ср.' => 3, |
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162 'Чт.' => 4, |
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163 'Пт.' => 5, |
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164 'Сб.' => 6, |
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165 'Вс.' => 7, |
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166 ]; |
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167 |
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168 /** |
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169 * List of months, calendar month name => calendar month number |
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170 * |
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171 * @access protected |
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172 * @var array |
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173 */ |
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174 public $month = [ |
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175 // English |
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176 'jan' => 1, |
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177 'january' => 1, |
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178 'feb' => 2, |
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179 'february' => 2, |
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180 'mar' => 3, |
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181 'march' => 3, |
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182 'apr' => 4, |
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183 'april' => 4, |
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184 'may' => 5, |
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185 // No long form of May |
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186 'jun' => 6, |
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187 'june' => 6, |
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188 'jul' => 7, |
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189 'july' => 7, |
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190 'aug' => 8, |
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191 'august' => 8, |
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192 'sep' => 9, |
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193 'september' => 9, |
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194 'oct' => 10, |
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195 'october' => 10, |
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196 'nov' => 11, |
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197 'november' => 11, |
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198 'dec' => 12, |
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199 'december' => 12, |
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200 // Dutch |
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201 'januari' => 1, |
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202 'februari' => 2, |
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203 'maart' => 3, |
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204 'april' => 4, |
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205 'mei' => 5, |
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206 'juni' => 6, |
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207 'juli' => 7, |
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208 'augustus' => 8, |
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209 'september' => 9, |
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210 'oktober' => 10, |
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211 'november' => 11, |
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212 'december' => 12, |
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213 // French |
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214 'janvier' => 1, |
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215 'février' => 2, |
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216 'mars' => 3, |
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217 'avril' => 4, |
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218 'mai' => 5, |
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219 'juin' => 6, |
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220 'juillet' => 7, |
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221 'août' => 8, |
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222 'septembre' => 9, |
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223 'octobre' => 10, |
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224 'novembre' => 11, |
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225 'décembre' => 12, |
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226 // German |
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227 'januar' => 1, |
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228 'jan' => 1, |
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229 'februar' => 2, |
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230 'feb' => 2, |
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231 'märz' => 3, |
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232 'mär' => 3, |
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233 'april' => 4, |
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234 'apr' => 4, |
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235 'mai' => 5, // no short form for may |
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236 'juni' => 6, |
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237 'jun' => 6, |
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238 'juli' => 7, |
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239 'jul' => 7, |
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240 'august' => 8, |
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241 'aug' => 8, |
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242 'september' => 9, |
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243 'sep' => 9, |
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244 'oktober' => 10, |
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245 'okt' => 10, |
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246 'november' => 11, |
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247 'nov' => 11, |
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248 'dezember' => 12, |
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249 'dez' => 12, |
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250 // Italian |
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251 'gennaio' => 1, |
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252 'febbraio' => 2, |
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253 'marzo' => 3, |
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254 'aprile' => 4, |
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255 'maggio' => 5, |
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256 'giugno' => 6, |
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257 'luglio' => 7, |
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258 'agosto' => 8, |
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259 'settembre' => 9, |
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260 'ottobre' => 10, |
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261 'novembre' => 11, |
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262 'dicembre' => 12, |
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263 // Spanish |
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264 'enero' => 1, |
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265 'febrero' => 2, |
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266 'marzo' => 3, |
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267 'abril' => 4, |
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268 'mayo' => 5, |
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269 'junio' => 6, |
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270 'julio' => 7, |
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271 'agosto' => 8, |
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272 'septiembre' => 9, |
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273 'setiembre' => 9, |
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274 'octubre' => 10, |
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275 'noviembre' => 11, |
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276 'diciembre' => 12, |
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277 // Finnish |
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278 'tammikuu' => 1, |
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279 'helmikuu' => 2, |
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280 'maaliskuu' => 3, |
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281 'huhtikuu' => 4, |
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282 'toukokuu' => 5, |
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283 'kesäkuu' => 6, |
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284 'heinäkuu' => 7, |
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285 'elokuu' => 8, |
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286 'suuskuu' => 9, |
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287 'lokakuu' => 10, |
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288 'marras' => 11, |
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289 'joulukuu' => 12, |
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290 // Hungarian |
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291 'január' => 1, |
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292 'február' => 2, |
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293 'március' => 3, |
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294 'április' => 4, |
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295 'május' => 5, |
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296 'június' => 6, |
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297 'július' => 7, |
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298 'augusztus' => 8, |
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299 'szeptember' => 9, |
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300 'október' => 10, |
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301 'november' => 11, |
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302 'december' => 12, |
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303 // Greek |
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304 'Ιαν' => 1, |
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305 'Φεβ' => 2, |
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306 'Μάώ' => 3, |
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307 'Μαώ' => 3, |
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308 'Απρ' => 4, |
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309 'Μάι' => 5, |
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310 'Μαϊ' => 5, |
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311 'Μαι' => 5, |
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312 'Ιούν' => 6, |
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313 'Ιον' => 6, |
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314 'Ιούλ' => 7, |
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315 'Ιολ' => 7, |
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316 'Αύγ' => 8, |
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317 'Αυγ' => 8, |
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318 'Σεπ' => 9, |
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319 'Οκτ' => 10, |
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320 'Νοέ' => 11, |
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321 'Δεκ' => 12, |
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322 // Russian |
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323 'Янв' => 1, |
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324 'января' => 1, |
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325 'Фев' => 2, |
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326 'февраля' => 2, |
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327 'Мар' => 3, |
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328 'марта' => 3, |
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329 'Апр' => 4, |
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330 'апреля' => 4, |
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331 'Май' => 5, |
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332 'мая' => 5, |
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333 'Июн' => 6, |
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334 'июня' => 6, |
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335 'Июл' => 7, |
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336 'июля' => 7, |
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337 'Авг' => 8, |
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338 'августа' => 8, |
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339 'Сен' => 9, |
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340 'сентября' => 9, |
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341 'Окт' => 10, |
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342 'октября' => 10, |
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343 'Ноя' => 11, |
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344 'ноября' => 11, |
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345 'Дек' => 12, |
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346 'декабря' => 12, |
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347 |
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348 ]; |
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349 |
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350 /** |
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351 * List of timezones, abbreviation => offset from UTC |
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352 * |
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353 * @access protected |
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354 * @var array |
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355 */ |
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356 public $timezone = [ |
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357 'ACDT' => 37800, |
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358 'ACIT' => 28800, |
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359 'ACST' => 34200, |
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360 'ACT' => -18000, |
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361 'ACWDT' => 35100, |
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362 'ACWST' => 31500, |
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363 'AEDT' => 39600, |
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364 'AEST' => 36000, |
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365 'AFT' => 16200, |
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366 'AKDT' => -28800, |
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367 'AKST' => -32400, |
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368 'AMDT' => 18000, |
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369 'AMT' => -14400, |
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370 'ANAST' => 46800, |
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371 'ANAT' => 43200, |
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372 'ART' => -10800, |
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373 'AZOST' => -3600, |
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374 'AZST' => 18000, |
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375 'AZT' => 14400, |
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376 'BIOT' => 21600, |
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377 'BIT' => -43200, |
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378 'BOT' => -14400, |
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379 'BRST' => -7200, |
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380 'BRT' => -10800, |
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381 'BST' => 3600, |
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382 'BTT' => 21600, |
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383 'CAST' => 18000, |
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384 'CAT' => 7200, |
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385 'CCT' => 23400, |
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386 'CDT' => -18000, |
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387 'CEDT' => 7200, |
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388 'CEST' => 7200, |
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389 'CET' => 3600, |
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390 'CGST' => -7200, |
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391 'CGT' => -10800, |
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392 'CHADT' => 49500, |
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393 'CHAST' => 45900, |
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394 'CIST' => -28800, |
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395 'CKT' => -36000, |
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396 'CLDT' => -10800, |
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397 'CLST' => -14400, |
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398 'COT' => -18000, |
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399 'CST' => -21600, |
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400 'CVT' => -3600, |
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401 'CXT' => 25200, |
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402 'DAVT' => 25200, |
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403 'DTAT' => 36000, |
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404 'EADT' => -18000, |
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405 'EAST' => -21600, |
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406 'EAT' => 10800, |
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407 'ECT' => -18000, |
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408 'EDT' => -14400, |
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409 'EEST' => 10800, |
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410 'EET' => 7200, |
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411 'EGT' => -3600, |
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412 'EKST' => 21600, |
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413 'EST' => -18000, |
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414 'FJT' => 43200, |
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415 'FKDT' => -10800, |
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416 'FKST' => -14400, |
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417 'FNT' => -7200, |
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418 'GALT' => -21600, |
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419 'GEDT' => 14400, |
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420 'GEST' => 10800, |
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421 'GFT' => -10800, |
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422 'GILT' => 43200, |
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423 'GIT' => -32400, |
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424 'GST' => 14400, |
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425 'GST' => -7200, |
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426 'GYT' => -14400, |
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427 'HAA' => -10800, |
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428 'HAC' => -18000, |
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429 'HADT' => -32400, |
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430 'HAE' => -14400, |
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431 'HAP' => -25200, |
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432 'HAR' => -21600, |
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433 'HAST' => -36000, |
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434 'HAT' => -9000, |
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435 'HAY' => -28800, |
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436 'HKST' => 28800, |
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437 'HMT' => 18000, |
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438 'HNA' => -14400, |
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439 'HNC' => -21600, |
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440 'HNE' => -18000, |
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441 'HNP' => -28800, |
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442 'HNR' => -25200, |
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443 'HNT' => -12600, |
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444 'HNY' => -32400, |
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445 'IRDT' => 16200, |
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446 'IRKST' => 32400, |
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447 'IRKT' => 28800, |
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448 'IRST' => 12600, |
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449 'JFDT' => -10800, |
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450 'JFST' => -14400, |
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451 'JST' => 32400, |
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452 'KGST' => 21600, |
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453 'KGT' => 18000, |
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454 'KOST' => 39600, |
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455 'KOVST' => 28800, |
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456 'KOVT' => 25200, |
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457 'KRAST' => 28800, |
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458 'KRAT' => 25200, |
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459 'KST' => 32400, |
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460 'LHDT' => 39600, |
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461 'LHST' => 37800, |
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462 'LINT' => 50400, |
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463 'LKT' => 21600, |
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464 'MAGST' => 43200, |
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465 'MAGT' => 39600, |
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466 'MAWT' => 21600, |
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467 'MDT' => -21600, |
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468 'MESZ' => 7200, |
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469 'MEZ' => 3600, |
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470 'MHT' => 43200, |
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471 'MIT' => -34200, |
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472 'MNST' => 32400, |
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473 'MSDT' => 14400, |
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474 'MSST' => 10800, |
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475 'MST' => -25200, |
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476 'MUT' => 14400, |
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477 'MVT' => 18000, |
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478 'MYT' => 28800, |
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479 'NCT' => 39600, |
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480 'NDT' => -9000, |
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481 'NFT' => 41400, |
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482 'NMIT' => 36000, |
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483 'NOVST' => 25200, |
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484 'NOVT' => 21600, |
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485 'NPT' => 20700, |
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486 'NRT' => 43200, |
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487 'NST' => -12600, |
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488 'NUT' => -39600, |
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489 'NZDT' => 46800, |
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490 'NZST' => 43200, |
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491 'OMSST' => 25200, |
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492 'OMST' => 21600, |
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493 'PDT' => -25200, |
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494 'PET' => -18000, |
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495 'PETST' => 46800, |
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496 'PETT' => 43200, |
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497 'PGT' => 36000, |
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498 'PHOT' => 46800, |
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499 'PHT' => 28800, |
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500 'PKT' => 18000, |
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501 'PMDT' => -7200, |
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502 'PMST' => -10800, |
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503 'PONT' => 39600, |
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504 'PST' => -28800, |
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505 'PWT' => 32400, |
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506 'PYST' => -10800, |
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507 'PYT' => -14400, |
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508 'RET' => 14400, |
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509 'ROTT' => -10800, |
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510 'SAMST' => 18000, |
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511 'SAMT' => 14400, |
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512 'SAST' => 7200, |
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513 'SBT' => 39600, |
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514 'SCDT' => 46800, |
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515 'SCST' => 43200, |
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516 'SCT' => 14400, |
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517 'SEST' => 3600, |
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518 'SGT' => 28800, |
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519 'SIT' => 28800, |
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520 'SRT' => -10800, |
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521 'SST' => -39600, |
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522 'SYST' => 10800, |
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523 'SYT' => 7200, |
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524 'TFT' => 18000, |
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525 'THAT' => -36000, |
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526 'TJT' => 18000, |
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527 'TKT' => -36000, |
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528 'TMT' => 18000, |
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529 'TOT' => 46800, |
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530 'TPT' => 32400, |
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531 'TRUT' => 36000, |
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532 'TVT' => 43200, |
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533 'TWT' => 28800, |
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534 'UYST' => -7200, |
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535 'UYT' => -10800, |
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536 'UZT' => 18000, |
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537 'VET' => -14400, |
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538 'VLAST' => 39600, |
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539 'VLAT' => 36000, |
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540 'VOST' => 21600, |
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541 'VUT' => 39600, |
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542 'WAST' => 7200, |
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543 'WAT' => 3600, |
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544 'WDT' => 32400, |
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545 'WEST' => 3600, |
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546 'WFT' => 43200, |
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547 'WIB' => 25200, |
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548 'WIT' => 32400, |
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549 'WITA' => 28800, |
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550 'WKST' => 18000, |
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551 'WST' => 28800, |
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552 'YAKST' => 36000, |
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553 'YAKT' => 32400, |
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554 'YAPT' => 36000, |
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555 'YEKST' => 21600, |
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556 'YEKT' => 18000, |
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557 ]; |
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558 |
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559 /** |
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560 * Cached PCRE for Date::$day |
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561 * |
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562 * @access protected |
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563 * @var string |
|
564 */ |
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565 public $day_pcre; |
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566 |
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567 /** |
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568 * Cached PCRE for Date::$month |
|
569 * |
|
570 * @access protected |
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571 * @var string |
|
572 */ |
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573 public $month_pcre; |
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574 |
|
575 /** |
|
576 * Array of user-added callback methods |
|
577 * |
|
578 * @access private |
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579 * @var array |
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580 */ |
|
581 public $built_in = []; |
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582 |
|
583 /** |
|
584 * Array of user-added callback methods |
|
585 * |
|
586 * @access private |
|
587 * @var array |
|
588 */ |
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589 public $user = []; |
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590 |
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591 /** |
|
592 * Create new Date object, and set self::day_pcre, |
|
593 * self::month_pcre, and self::built_in |
|
594 * |
|
595 * @access private |
|
596 */ |
|
597 public function __construct() |
|
598 { |
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599 $this->day_pcre = '(' . implode('|', array_keys($this->day)) . ')'; |
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600 $this->month_pcre = '(' . implode('|', array_keys($this->month)) . ')'; |
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601 |
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602 static $cache; |
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603 if (!isset($cache[get_class($this)])) { |
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604 $all_methods = get_class_methods($this); |
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605 |
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606 foreach ($all_methods as $method) { |
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607 if (strtolower(substr($method, 0, 5)) === 'date_') { |
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608 $cache[get_class($this)][] = $method; |
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609 } |
|
610 } |
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611 } |
|
612 |
|
613 foreach ($cache[get_class($this)] as $method) { |
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614 $this->built_in[] = $method; |
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615 } |
|
616 } |
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617 |
|
618 /** |
|
619 * Get the object |
|
620 * |
|
621 * @access public |
|
622 */ |
|
623 public static function get() |
|
624 { |
|
625 static $object; |
|
626 if (!$object) { |
|
627 $object = new Date(); |
|
628 } |
|
629 return $object; |
|
630 } |
|
631 |
|
632 /** |
|
633 * Parse a date |
|
634 * |
|
635 * @final |
|
636 * @access public |
|
637 * @param string $date Date to parse |
|
638 * @return int Timestamp corresponding to date string, or false on failure |
|
639 */ |
|
640 public function parse($date) |
|
641 { |
|
642 foreach ($this->user as $method) { |
|
643 if (($returned = call_user_func($method, $date)) !== false) { |
|
644 return $returned; |
|
645 } |
|
646 } |
|
647 |
|
648 foreach ($this->built_in as $method) { |
|
649 if (($returned = call_user_func([$this, $method], $date)) !== false) { |
|
650 return $returned; |
|
651 } |
|
652 } |
|
653 |
|
654 return false; |
|
655 } |
|
656 |
|
657 /** |
|
658 * Add a callback method to parse a date |
|
659 * |
|
660 * @final |
|
661 * @access public |
|
662 * @param callable $callback |
|
663 */ |
|
664 public function add_callback($callback) |
|
665 { |
|
666 if (is_callable($callback)) { |
|
667 $this->user[] = $callback; |
|
668 } else { |
|
669 trigger_error('User-supplied function must be a valid callback', E_USER_WARNING); |
|
670 } |
|
671 } |
|
672 |
|
673 /** |
|
674 * Parse a superset of W3C-DTF (allows hyphens and colons to be omitted, as |
|
675 * well as allowing any of upper or lower case "T", horizontal tabs, or |
|
676 * spaces to be used as the time separator (including more than one)) |
|
677 * |
|
678 * @access protected |
|
679 * @return int Timestamp |
|
680 */ |
|
681 public function date_w3cdtf($date) |
|
682 { |
|
683 $pcre = <<<'PCRE' |
|
684 / |
|
685 ^ |
|
686 (?P<year>[0-9]{4}) |
|
687 (?: |
|
688 -? |
|
689 (?P<month>[0-9]{2}) |
|
690 (?: |
|
691 -? |
|
692 (?P<day>[0-9]{2}) |
|
693 (?: |
|
694 [Tt\x09\x20]+ |
|
695 (?P<hour>[0-9]{2}) |
|
696 (?: |
|
697 :? |
|
698 (?P<minute>[0-9]{2}) |
|
699 (?: |
|
700 :? |
|
701 (?P<second>[0-9]{2}) |
|
702 (?: |
|
703 . |
|
704 (?P<second_fraction>[0-9]*) |
|
705 )? |
|
706 )? |
|
707 )? |
|
708 (?: |
|
709 (?P<zulu>Z) |
|
710 | (?P<tz_sign>[+\-]) |
|
711 (?P<tz_hour>[0-9]{1,2}) |
|
712 :? |
|
713 (?P<tz_minute>[0-9]{1,2}) |
|
714 ) |
|
715 )? |
|
716 )? |
|
717 )? |
|
718 $ |
|
719 /x |
|
720 PCRE; |
|
721 if (preg_match($pcre, $date, $match)) { |
|
722 // Fill in empty matches and convert to proper types. |
|
723 $year = (int) $match['year']; |
|
724 $month = isset($match['month']) ? (int) $match['month'] : 1; |
|
725 $day = isset($match['day']) ? (int) $match['day'] : 1; |
|
726 $hour = isset($match['hour']) ? (int) $match['hour'] : 0; |
|
727 $minute = isset($match['minute']) ? (int) $match['minute'] : 0; |
|
728 $second = isset($match['second']) ? (int) $match['second'] : 0; |
|
729 $second_fraction = isset($match['second_fraction']) ? ((int) $match['second_fraction']) / (10 ** strlen($match['second_fraction'])) : 0; |
|
730 $tz_sign = ($match['tz_sign'] ?? '') === '-' ? -1 : 1; |
|
731 $tz_hour = isset($match['tz_hour']) ? (int) $match['tz_hour'] : 0; |
|
732 $tz_minute = isset($match['tz_minute']) ? (int) $match['tz_minute'] : 0; |
|
733 |
|
734 // Numeric timezone |
|
735 $timezone = $tz_hour * 3600; |
|
736 $timezone += $tz_minute * 60; |
|
737 $timezone *= $tz_sign; |
|
738 |
|
739 // Convert the number of seconds to an integer, taking decimals into account |
|
740 $second = (int) round($second + $second_fraction); |
|
741 |
|
742 return gmmktime($hour, $minute, $second, $month, $day, $year) - $timezone; |
|
743 } |
|
744 |
|
745 return false; |
|
746 } |
|
747 |
|
748 /** |
|
749 * Remove RFC822 comments |
|
750 * |
|
751 * @access protected |
|
752 * @param string $data Data to strip comments from |
|
753 * @return string Comment stripped string |
|
754 */ |
|
755 public function remove_rfc2822_comments($string) |
|
756 { |
|
757 $string = (string) $string; |
|
758 $position = 0; |
|
759 $length = strlen($string); |
|
760 $depth = 0; |
|
761 |
|
762 $output = ''; |
|
763 |
|
764 while ($position < $length && ($pos = strpos($string, '(', $position)) !== false) { |
|
765 $output .= substr($string, $position, $pos - $position); |
|
766 $position = $pos + 1; |
|
767 if ($pos === 0 || $string[$pos - 1] !== '\\') { |
|
768 $depth++; |
|
769 while ($depth && $position < $length) { |
|
770 $position += strcspn($string, '()', $position); |
|
771 if ($string[$position - 1] === '\\') { |
|
772 $position++; |
|
773 continue; |
|
774 } elseif (isset($string[$position])) { |
|
775 switch ($string[$position]) { |
|
776 case '(': |
|
777 $depth++; |
|
778 break; |
|
779 |
|
780 case ')': |
|
781 $depth--; |
|
782 break; |
|
783 } |
|
784 $position++; |
|
785 } else { |
|
786 break; |
|
787 } |
|
788 } |
|
789 } else { |
|
790 $output .= '('; |
|
791 } |
|
792 } |
|
793 $output .= substr($string, $position); |
|
794 |
|
795 return $output; |
|
796 } |
|
797 |
|
798 /** |
|
799 * Parse RFC2822's date format |
|
800 * |
|
801 * @access protected |
|
802 * @return int Timestamp |
|
803 */ |
|
804 public function date_rfc2822($date) |
|
805 { |
|
806 static $pcre; |
|
807 if (!$pcre) { |
|
808 $wsp = '[\x09\x20]'; |
|
809 $fws = '(?:' . $wsp . '+|' . $wsp . '*(?:\x0D\x0A' . $wsp . '+)+)'; |
|
810 $optional_fws = $fws . '?'; |
|
811 $day_name = $this->day_pcre; |
|
812 $month = $this->month_pcre; |
|
813 $day = '([0-9]{1,2})'; |
|
814 $hour = $minute = $second = '([0-9]{2})'; |
|
815 $year = '([0-9]{2,4})'; |
|
816 $num_zone = '([+\-])([0-9]{2})([0-9]{2})'; |
|
817 $character_zone = '([A-Z]{1,5})'; |
|
818 $zone = '(?:' . $num_zone . '|' . $character_zone . ')'; |
|
819 $pcre = '/(?:' . $optional_fws . $day_name . $optional_fws . ',)?' . $optional_fws . $day . $fws . $month . $fws . $year . $fws . $hour . $optional_fws . ':' . $optional_fws . $minute . '(?:' . $optional_fws . ':' . $optional_fws . $second . ')?' . $fws . $zone . '/i'; |
|
820 } |
|
821 if (preg_match($pcre, $this->remove_rfc2822_comments($date), $match)) { |
|
822 /* |
|
823 Capturing subpatterns: |
|
824 1: Day name |
|
825 2: Day |
|
826 3: Month |
|
827 4: Year |
|
828 5: Hour |
|
829 6: Minute |
|
830 7: Second |
|
831 8: Timezone ± |
|
832 9: Timezone hours |
|
833 10: Timezone minutes |
|
834 11: Alphabetic timezone |
|
835 */ |
|
836 |
|
837 // Find the month number |
|
838 $month = $this->month[strtolower($match[3])]; |
|
839 |
|
840 // Numeric timezone |
|
841 if ($match[8] !== '') { |
|
842 $timezone = $match[9] * 3600; |
|
843 $timezone += $match[10] * 60; |
|
844 if ($match[8] === '-') { |
|
845 $timezone = 0 - $timezone; |
|
846 } |
|
847 } |
|
848 // Character timezone |
|
849 elseif (isset($this->timezone[strtoupper($match[11])])) { |
|
850 $timezone = $this->timezone[strtoupper($match[11])]; |
|
851 } |
|
852 // Assume everything else to be -0000 |
|
853 else { |
|
854 $timezone = 0; |
|
855 } |
|
856 |
|
857 // Deal with 2/3 digit years |
|
858 if ($match[4] < 50) { |
|
859 $match[4] += 2000; |
|
860 } elseif ($match[4] < 1000) { |
|
861 $match[4] += 1900; |
|
862 } |
|
863 |
|
864 // Second is optional, if it is empty set it to zero |
|
865 if ($match[7] !== '') { |
|
866 $second = $match[7]; |
|
867 } else { |
|
868 $second = 0; |
|
869 } |
|
870 |
|
871 return gmmktime(intval($match[5]), intval($match[6]), intval($second), intval($month), intval($match[2]), intval($match[4])) - $timezone; |
|
872 } |
|
873 |
|
874 return false; |
|
875 } |
|
876 |
|
877 /** |
|
878 * Parse RFC850's date format |
|
879 * |
|
880 * @access protected |
|
881 * @return int Timestamp |
|
882 */ |
|
883 public function date_rfc850($date) |
|
884 { |
|
885 static $pcre; |
|
886 if (!$pcre) { |
|
887 $space = '[\x09\x20]+'; |
|
888 $day_name = $this->day_pcre; |
|
889 $month = $this->month_pcre; |
|
890 $day = '([0-9]{1,2})'; |
|
891 $year = $hour = $minute = $second = '([0-9]{2})'; |
|
892 $zone = '([A-Z]{1,5})'; |
|
893 $pcre = '/^' . $day_name . ',' . $space . $day . '-' . $month . '-' . $year . $space . $hour . ':' . $minute . ':' . $second . $space . $zone . '$/i'; |
|
894 } |
|
895 if (preg_match($pcre, $date, $match)) { |
|
896 /* |
|
897 Capturing subpatterns: |
|
898 1: Day name |
|
899 2: Day |
|
900 3: Month |
|
901 4: Year |
|
902 5: Hour |
|
903 6: Minute |
|
904 7: Second |
|
905 8: Timezone |
|
906 */ |
|
907 |
|
908 // Month |
|
909 $month = $this->month[strtolower($match[3])]; |
|
910 |
|
911 // Character timezone |
|
912 if (isset($this->timezone[strtoupper($match[8])])) { |
|
913 $timezone = $this->timezone[strtoupper($match[8])]; |
|
914 } |
|
915 // Assume everything else to be -0000 |
|
916 else { |
|
917 $timezone = 0; |
|
918 } |
|
919 |
|
920 // Deal with 2 digit year |
|
921 if ($match[4] < 50) { |
|
922 $match[4] += 2000; |
|
923 } else { |
|
924 $match[4] += 1900; |
|
925 } |
|
926 |
|
927 return gmmktime($match[5], $match[6], $match[7], $month, $match[2], $match[4]) - $timezone; |
|
928 } |
|
929 |
|
930 return false; |
|
931 } |
|
932 |
|
933 /** |
|
934 * Parse C99's asctime()'s date format |
|
935 * |
|
936 * @access protected |
|
937 * @return int Timestamp |
|
938 */ |
|
939 public function date_asctime($date) |
|
940 { |
|
941 static $pcre; |
|
942 if (!$pcre) { |
|
943 $space = '[\x09\x20]+'; |
|
944 $wday_name = $this->day_pcre; |
|
945 $mon_name = $this->month_pcre; |
|
946 $day = '([0-9]{1,2})'; |
|
947 $hour = $sec = $min = '([0-9]{2})'; |
|
948 $year = '([0-9]{4})'; |
|
949 $terminator = '\x0A?\x00?'; |
|
950 $pcre = '/^' . $wday_name . $space . $mon_name . $space . $day . $space . $hour . ':' . $min . ':' . $sec . $space . $year . $terminator . '$/i'; |
|
951 } |
|
952 if (preg_match($pcre, $date, $match)) { |
|
953 /* |
|
954 Capturing subpatterns: |
|
955 1: Day name |
|
956 2: Month |
|
957 3: Day |
|
958 4: Hour |
|
959 5: Minute |
|
960 6: Second |
|
961 7: Year |
|
962 */ |
|
963 |
|
964 $month = $this->month[strtolower($match[2])]; |
|
965 return gmmktime((int) $match[4], (int) $match[5], (int) $match[6], $month, (int) $match[3], (int) $match[7]); |
|
966 } |
|
967 |
|
968 return false; |
|
969 } |
|
970 |
|
971 /** |
|
972 * Parse dates using strtotime() |
|
973 * |
|
974 * @access protected |
|
975 * @return int Timestamp |
|
976 */ |
|
977 public function date_strtotime($date) |
|
978 { |
|
979 $strtotime = strtotime($date); |
|
980 if ($strtotime === -1 || $strtotime === false) { |
|
981 return false; |
|
982 } |
|
983 |
|
984 return $strtotime; |
|
985 } |
|
986 } |
|
987 |
|
988 class_alias('SimplePie\Parse\Date', 'SimplePie_Parse_Date'); |