1 | <?php |
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2 | // +-----------------------------------------------------------------------+ |
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3 | // | PhpWebGallery - a PHP based picture gallery | |
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4 | // | Copyright (C) 2003-2006 PhpWebGallery Team - http://phpwebgallery.net | |
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5 | // +-----------------------------------------------------------------------+ |
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6 | // | branch : BSF (Best So Far) |
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7 | // | file : $RCSfile$ |
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8 | // | last update : $Date: 2006-04-06 02:23:54 +0000 (Thu, 06 Apr 2006) $ |
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9 | // | last modifier : $Author: rvelices $ |
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10 | // | revision : $Revision: 1131 $ |
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11 | // +-----------------------------------------------------------------------+ |
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12 | // | This program is free software; you can redistribute it and/or modify | |
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13 | // | it under the terms of the GNU General Public License as published by | |
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14 | // | the Free Software Foundation | |
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15 | // | | |
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16 | // | This program is distributed in the hope that it will be useful, but | |
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17 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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18 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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19 | // | General Public License for more details. | |
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20 | // | | |
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21 | // | You should have received a copy of the GNU General Public License | |
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22 | // | along with this program; if not, write to the Free Software | |
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23 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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24 | // | USA. | |
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25 | // +-----------------------------------------------------------------------+ |
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26 | |
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27 | |
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28 | /** |
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29 | * returns a prefix for each url link on displayed page |
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30 | * @return string |
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31 | */ |
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32 | function get_root_url() |
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33 | { |
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34 | global $page; |
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35 | if ( isset($page['root_path']) ) |
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36 | { |
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37 | return $page['root_path']; |
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38 | } |
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39 | return PHPWG_ROOT_PATH; |
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40 | } |
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41 | |
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42 | /** |
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43 | * adds one or more _GET style parameters to an url |
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44 | * example: add_url_params('/x', array('a'=>'b')) returns /x?a=b |
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45 | * add_url_params('/x?cat_id=10', array('a'=>'b')) returns /x?cat_id=10&a=b |
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46 | * @param string url |
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47 | * @param array params |
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48 | * @return string |
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49 | */ |
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50 | function add_url_params($url, $params) |
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51 | { |
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52 | if ( !empty($params) ) |
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53 | { |
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54 | assert( is_array($params) ); |
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55 | $is_first = true; |
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56 | foreach($params as $param=>$val) |
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57 | { |
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58 | if ($is_first) |
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59 | { |
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60 | $is_first = false; |
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61 | $url .= ( strstr($url, '?')===false ) ? '?' :'&'; |
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62 | } |
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63 | else |
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64 | { |
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65 | $url .= '&'; |
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66 | } |
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67 | $url .= $param; |
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68 | if (isset($val)) |
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69 | { |
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70 | $url .= '='.$val; |
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71 | } |
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72 | } |
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73 | } |
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74 | return $url; |
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75 | } |
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76 | |
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77 | /** |
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78 | * build an index URL for a specific section |
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79 | * |
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80 | * @param array |
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81 | * @return string |
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82 | */ |
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83 | function make_index_URL($params = array()) |
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84 | { |
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85 | global $conf; |
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86 | $url = get_root_url().'index'; |
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87 | if ($conf['php_extension_in_urls']) |
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88 | { |
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89 | $url .= '.php'; |
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90 | } |
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91 | if ($conf['question_mark_in_urls']) |
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92 | { |
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93 | $url .= '?'; |
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94 | } |
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95 | $url.= make_section_in_URL($params); |
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96 | $url = add_well_known_params_in_url($url, $params); |
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97 | return $url; |
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98 | } |
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99 | |
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100 | /** |
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101 | * build an index URL with current page parameters, but with redefinitions |
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102 | * and removes. |
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103 | * |
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104 | * duplicate_index_URL(array('category' => 12), array('start')) will create |
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105 | * an index URL on the current section (categories), but on a redefined |
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106 | * category and without the start URL parameter. |
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107 | * |
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108 | * @param array redefined keys |
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109 | * @param array removed keys |
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110 | * @return string |
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111 | */ |
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112 | function duplicate_index_URL($redefined = array(), $removed = array()) |
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113 | { |
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114 | return make_index_URL( |
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115 | params_for_duplication($redefined, $removed) |
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116 | ); |
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117 | } |
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118 | |
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119 | /** |
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120 | * returns $page global array with key redefined and key removed |
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121 | * |
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122 | * @param array redefined keys |
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123 | * @param array removed keys |
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124 | * @return array |
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125 | */ |
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126 | function params_for_duplication($redefined, $removed) |
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127 | { |
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128 | global $page; |
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129 | |
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130 | if (count($removed) > 0) |
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131 | { |
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132 | $params = array(); |
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133 | |
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134 | foreach ($page as $page_item_key => $page_item_value) |
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135 | { |
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136 | if (!in_array($page_item_key, $removed)) |
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137 | { |
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138 | $params[$page_item_key] = $page_item_value; |
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139 | } |
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140 | } |
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141 | } |
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142 | else |
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143 | { |
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144 | $params = $page; |
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145 | } |
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146 | |
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147 | foreach ($redefined as $redefined_param => $redefined_value) |
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148 | { |
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149 | $params[$redefined_param] = $redefined_value; |
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150 | } |
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151 | |
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152 | return $params; |
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153 | } |
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154 | |
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155 | /** |
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156 | * create a picture URL with current page parameters, but with redefinitions |
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157 | * and removes. See duplicate_index_URL. |
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158 | * |
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159 | * @param array redefined keys |
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160 | * @param array removed keys |
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161 | * @return string |
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162 | */ |
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163 | function duplicate_picture_URL($redefined = array(), $removed = array()) |
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164 | { |
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165 | return make_picture_URL( |
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166 | params_for_duplication($redefined, $removed) |
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167 | ); |
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168 | } |
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169 | |
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170 | /** |
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171 | * create a picture URL on a specific section for a specific picture |
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172 | * |
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173 | * @param array |
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174 | * @return string |
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175 | */ |
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176 | function make_picture_URL($params) |
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177 | { |
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178 | global $conf; |
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179 | if (!isset($params['image_id'])) |
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180 | { |
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181 | die('make_picture_URL: image_id is a required parameter'); |
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182 | } |
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183 | |
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184 | $url = get_root_url().'picture'; |
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185 | if ($conf['php_extension_in_urls']) |
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186 | { |
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187 | $url .= '.php'; |
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188 | } |
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189 | if ($conf['question_mark_in_urls']) |
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190 | { |
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191 | $url .= '?'; |
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192 | } |
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193 | $url.= '/'; |
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194 | switch ( $conf['picture_url_style'] ) |
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195 | { |
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196 | case 'id-file': |
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197 | $url .= $params['image_id']; |
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198 | if ( isset($params['image_file']) ) |
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199 | { |
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200 | $url .= '-'.get_filename_wo_extension($params['image_file']); |
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201 | } |
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202 | break; |
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203 | case 'file': |
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204 | if ( isset($params['image_file']) |
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205 | and !is_numeric($params['image_file']) ) |
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206 | { |
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207 | $url .= get_filename_wo_extension($params['image_file']); |
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208 | } |
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209 | else |
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210 | { |
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211 | $url .= $params['image_id']; |
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212 | } |
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213 | break; |
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214 | default: |
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215 | $url .= $params['image_id']; |
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216 | } |
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217 | $url .= make_section_in_URL($params); |
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218 | $url = add_well_known_params_in_url($url, $params); |
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219 | return $url; |
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220 | } |
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221 | |
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222 | /** |
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223 | *adds to the url the chronology and start parameters |
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224 | */ |
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225 | function add_well_known_params_in_url($url, $params) |
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226 | { |
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227 | if ( isset($params['chronology_field']) ) |
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228 | { |
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229 | $url .= '/'. $params['chronology_field']; |
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230 | $url .= '-'. $params['chronology_style']; |
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231 | if ( isset($params['chronology_view']) ) |
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232 | { |
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233 | $url .= '-'. $params['chronology_view']; |
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234 | } |
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235 | if ( !empty($params['chronology_date']) ) |
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236 | { |
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237 | $url .= '-'. implode('-', $params['chronology_date'] ); |
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238 | } |
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239 | } |
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240 | |
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241 | if (isset($params['start']) and $params['start'] > 0) |
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242 | { |
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243 | $url.= '/start-'.$params['start']; |
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244 | } |
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245 | return $url; |
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246 | } |
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247 | |
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248 | /** |
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249 | * return the section token of an index or picture URL. |
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250 | * |
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251 | * Depending on section, other parameters are required (see function code |
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252 | * for details) |
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253 | * |
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254 | * @param array |
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255 | * @return string |
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256 | */ |
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257 | function make_section_in_URL($params) |
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258 | { |
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259 | global $conf; |
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260 | $section_string = ''; |
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261 | |
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262 | $section_of = array( |
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263 | 'category' => 'categories', |
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264 | 'tags' => 'tags', |
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265 | 'list' => 'list', |
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266 | 'search' => 'search', |
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267 | ); |
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268 | |
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269 | foreach ($section_of as $param => $section) |
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270 | { |
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271 | if (isset($params[$param])) |
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272 | { |
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273 | $params['section'] = $section; |
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274 | } |
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275 | } |
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276 | |
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277 | if (!isset($params['section'])) |
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278 | { |
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279 | $params['section'] = 'categories'; |
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280 | } |
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281 | |
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282 | switch($params['section']) |
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283 | { |
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284 | case 'categories' : |
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285 | { |
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286 | if (!isset($params['category'])) |
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287 | { |
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288 | $section_string.= '/categories'; |
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289 | } |
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290 | else |
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291 | { |
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292 | $section_string.= '/category/'.$params['category']; |
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293 | if ($conf['category_url_style']=='id-name' and isset($params['cat_name']) ) |
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294 | { |
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295 | if ( is_string($params['cat_name']) ) |
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296 | { |
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297 | $section_string.= '-'.str2url($params['cat_name']); |
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298 | } |
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299 | elseif ( is_array( $params['cat_name'] ) and |
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300 | isset( $params['cat_name'][$params['category']] ) ) |
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301 | { |
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302 | $section_string.= '-' |
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303 | .str2url($params['cat_name'][$params['category']]); |
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304 | } |
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305 | } |
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306 | } |
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307 | |
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308 | break; |
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309 | } |
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310 | case 'tags' : |
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311 | { |
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312 | if (!isset($params['tags']) or count($params['tags']) == 0) |
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313 | { |
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314 | die('make_section_in_URL: require at least one tag'); |
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315 | } |
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316 | |
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317 | $section_string.= '/tags'; |
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318 | |
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319 | foreach ($params['tags'] as $tag) |
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320 | { |
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321 | switch ( $conf['tag_url_style'] ) |
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322 | { |
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323 | case 'id': |
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324 | $section_string.= '/'.$tag['id']; |
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325 | break; |
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326 | case 'tag': |
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327 | if (isset($tag['url_name']) and !is_numeric($tag['url_name']) ) |
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328 | { |
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329 | $section_string.= '/'.$tag['url_name']; |
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330 | break; |
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331 | } |
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332 | default: |
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333 | $section_string.= '/'.$tag['id']; |
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334 | if (isset($tag['url_name'])) |
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335 | { |
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336 | $section_string.= '-'.$tag['url_name']; |
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337 | } |
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338 | } |
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339 | } |
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340 | |
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341 | break; |
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342 | } |
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343 | case 'search' : |
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344 | { |
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345 | if (!isset($params['search'])) |
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346 | { |
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347 | die('make_section_in_URL: require a search identifier'); |
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348 | } |
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349 | |
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350 | $section_string.= '/search/'.$params['search']; |
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351 | |
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352 | break; |
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353 | } |
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354 | case 'list' : |
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355 | { |
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356 | if (!isset($params['list'])) |
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357 | { |
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358 | die('make_section_in_URL: require a list of items'); |
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359 | } |
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360 | |
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361 | $section_string.= '/list/'.implode(',', $params['list']); |
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362 | |
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363 | break; |
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364 | } |
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365 | default : |
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366 | { |
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367 | $section_string.= '/'.$params['section']; |
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368 | } |
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369 | } |
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370 | |
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371 | return $section_string; |
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372 | } |
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373 | ?> |
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