1 | <?php |
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2 | // +-----------------------------------------------------------------------+ |
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3 | // | Piwigo - a PHP based picture gallery | |
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4 | // +-----------------------------------------------------------------------+ |
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5 | // | Copyright(C) 2008-2010 Piwigo Team http://piwigo.org | |
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6 | // | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net | |
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7 | // | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick | |
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8 | // +-----------------------------------------------------------------------+ |
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9 | // | This program is free software; you can redistribute it and/or modify | |
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10 | // | it under the terms of the GNU General Public License as published by | |
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11 | // | the Free Software Foundation | |
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12 | // | | |
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13 | // | This program is distributed in the hope that it will be useful, but | |
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14 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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15 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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16 | // | General Public License for more details. | |
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17 | // | | |
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18 | // | You should have received a copy of the GNU General Public License | |
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19 | // | along with this program; if not, write to the Free Software | |
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20 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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21 | // | USA. | |
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22 | // +-----------------------------------------------------------------------+ |
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23 | |
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24 | |
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25 | require_once(PHPWG_ROOT_PATH.'include/smarty/libs/Smarty.class.php'); |
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26 | |
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27 | |
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28 | class Template { |
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29 | |
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30 | var $smarty; |
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31 | |
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32 | var $output = ''; |
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33 | |
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34 | // Hash of filenames for each template handle. |
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35 | var $files = array(); |
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36 | |
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37 | // Template extents filenames for each template handle. |
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38 | var $extents = array(); |
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39 | |
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40 | // Templates prefilter from external sources (plugins) |
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41 | var $external_filters = array(); |
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42 | |
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43 | // used by html_head smarty block to add content before </head> |
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44 | var $html_head_elements = array(); |
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45 | |
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46 | function Template($root = ".", $theme= "", $path = "template") |
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47 | { |
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48 | global $conf, $lang_info; |
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49 | |
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50 | $this->smarty = new Smarty; |
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51 | $this->smarty->debugging = $conf['debug_template']; |
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52 | $this->smarty->compile_check=$conf['template_compile_check']; |
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53 | |
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54 | $compile_dir = $conf['local_data_dir'].'/templates_c'; |
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55 | mkgetdir( $compile_dir ); |
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56 | |
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57 | $this->smarty->compile_dir = $compile_dir; |
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58 | |
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59 | $this->smarty->assign_by_ref( 'pwg', new PwgTemplateAdapter() ); |
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60 | $this->smarty->register_modifier( 'translate', array('Template', 'mod_translate') ); |
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61 | $this->smarty->register_modifier( 'explode', array('Template', 'mod_explode') ); |
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62 | $this->smarty->register_modifier( 'get_extent', array(&$this, 'get_extent') ); |
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63 | $this->smarty->register_block('html_head', array(&$this, 'block_html_head') ); |
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64 | $this->smarty->register_function('known_script', array(&$this, 'func_known_script') ); |
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65 | $this->smarty->register_prefilter( array('Template', 'prefilter_white_space') ); |
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66 | if ( $conf['compiled_template_cache_language'] ) |
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67 | { |
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68 | $this->smarty->register_prefilter( array('Template', 'prefilter_language') ); |
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69 | } |
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70 | |
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71 | $this->smarty->template_dir = array(); |
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72 | if ( !empty($theme) ) |
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73 | $this->set_theme($root, $theme, $path); |
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74 | else |
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75 | $this->set_template_dir($root); |
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76 | |
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77 | $this->smarty->assign('lang_info', $lang_info); |
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78 | |
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79 | if (!defined('IN_ADMIN') and isset($conf['extents_for_templates'])) |
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80 | { |
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81 | $tpl_extents = unserialize($conf['extents_for_templates']); |
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82 | $this->set_extents($tpl_extents, './template-extension/', true, $theme); |
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83 | } |
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84 | } |
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85 | |
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86 | /** |
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87 | * Load theme's parameters. |
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88 | */ |
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89 | function set_theme($root, $theme, $path) |
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90 | { |
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91 | $this->set_template_dir($root.'/'.$theme.'/'.$path); |
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92 | |
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93 | include($root.'/'.$theme.'/themeconf.inc.php'); |
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94 | |
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95 | if (isset($themeconf['parent']) and $themeconf['parent'] != $theme) |
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96 | { |
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97 | $this->set_theme($root, $themeconf['parent'], $path); |
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98 | } |
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99 | |
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100 | $tpl_var = array('id' => $theme); |
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101 | if (!empty($themeconf['local_head']) ) |
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102 | { |
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103 | $tpl_var['local_head'] = realpath($root.'/'.$theme.'/'.$themeconf['local_head'] ); |
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104 | } |
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105 | $this->smarty->append('themes', $tpl_var); |
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106 | $this->smarty->append('themeconf', $themeconf, true); |
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107 | } |
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108 | |
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109 | /** |
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110 | * Add template directory for this Template object. |
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111 | * Set compile id if not exists. |
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112 | */ |
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113 | function set_template_dir($dir) |
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114 | { |
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115 | $this->smarty->template_dir[] = $dir; |
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116 | |
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117 | if (!isset($this->smarty->compile_id)) |
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118 | { |
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119 | $real_dir = realpath($dir); |
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120 | $compile_id = crc32( $real_dir===false ? $dir : $real_dir); |
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121 | $this->smarty->compile_id = base_convert($compile_id, 10, 36 ); |
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122 | } |
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123 | } |
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124 | |
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125 | /** |
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126 | * Gets the template root directory for this Template object. |
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127 | */ |
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128 | function get_template_dir() |
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129 | { |
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130 | return $this->smarty->template_dir; |
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131 | } |
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132 | |
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133 | /** |
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134 | * Deletes all compiled templates. |
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135 | */ |
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136 | function delete_compiled_templates() |
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137 | { |
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138 | $save_compile_id = $this->smarty->compile_id; |
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139 | $this->smarty->compile_id = null; |
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140 | $this->smarty->clear_compiled_tpl(); |
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141 | $this->smarty->compile_id = $save_compile_id; |
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142 | file_put_contents($this->smarty->compile_dir.'/index.htm', 'Not allowed!'); |
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143 | } |
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144 | |
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145 | function get_themeconf($val) |
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146 | { |
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147 | $tc = $this->smarty->get_template_vars('themeconf'); |
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148 | return isset($tc[$val]) ? $tc[$val] : ''; |
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149 | } |
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150 | |
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151 | /** |
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152 | * Sets the template filename for handle. |
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153 | */ |
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154 | function set_filename($handle, $filename) |
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155 | { |
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156 | return $this->set_filenames( array($handle=>$filename) ); |
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157 | } |
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158 | |
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159 | /** |
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160 | * Sets the template filenames for handles. $filename_array should be a |
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161 | * hash of handle => filename pairs. |
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162 | */ |
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163 | function set_filenames($filename_array) |
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164 | { |
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165 | if (!is_array($filename_array)) |
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166 | { |
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167 | return false; |
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168 | } |
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169 | reset($filename_array); |
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170 | while(list($handle, $filename) = each($filename_array)) |
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171 | { |
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172 | if (is_null($filename)) |
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173 | { |
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174 | unset($this->files[$handle]); |
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175 | } |
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176 | else |
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177 | { |
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178 | $this->files[$handle] = $this->get_extent($filename, $handle); |
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179 | } |
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180 | } |
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181 | return true; |
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182 | } |
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183 | |
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184 | /** |
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185 | * Sets template extention filename for handles. |
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186 | */ |
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187 | function set_extent($filename, $param, $dir='', $overwrite=true, $theme='N/A') |
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188 | { |
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189 | return $this->set_extents(array($filename => $param), $dir, $overwrite); |
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190 | } |
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191 | |
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192 | /** |
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193 | * Sets template extentions filenames for handles. |
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194 | * $filename_array should be an hash of filename => array( handle, param) or filename => handle |
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195 | */ |
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196 | function set_extents($filename_array, $dir='', $overwrite=true, $theme='N/A') |
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197 | { |
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198 | if (!is_array($filename_array)) |
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199 | { |
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200 | return false; |
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201 | } |
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202 | foreach ($filename_array as $filename => $value) |
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203 | { |
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204 | if (is_array($value)) |
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205 | { |
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206 | $handle = $value[0]; |
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207 | $param = $value[1]; |
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208 | $thm = $value[2]; |
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209 | } |
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210 | elseif (is_string($value)) |
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211 | { |
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212 | $handle = $value; |
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213 | $param = 'N/A'; |
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214 | $thm = 'N/A'; |
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215 | } |
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216 | else |
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217 | { |
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218 | return false; |
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219 | } |
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220 | |
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221 | if ((stripos(implode('',array_keys($_GET)), '/'.$param) !== false or $param == 'N/A') |
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222 | and ($thm == $theme) |
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223 | and (!isset($this->extents[$handle]) or $overwrite) |
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224 | and file_exists($dir . $filename)) |
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225 | { |
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226 | $this->extents[$handle] = realpath($dir . $filename); |
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227 | } |
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228 | } |
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229 | return true; |
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230 | } |
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231 | |
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232 | /** return template extension if exists */ |
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233 | function get_extent($filename='', $handle='') |
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234 | { |
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235 | if (isset($this->extents[$handle])) |
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236 | { |
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237 | $filename = $this->extents[$handle]; |
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238 | } |
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239 | return $filename; |
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240 | } |
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241 | |
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242 | /** see smarty assign http://www.smarty.net/manual/en/api.assign.php */ |
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243 | function assign($tpl_var, $value = null) |
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244 | { |
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245 | $this->smarty->assign( $tpl_var, $value ); |
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246 | } |
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247 | |
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248 | /** |
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249 | * Inserts the uncompiled code for $handle as the value of $varname in the |
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250 | * root-level. This can be used to effectively include a template in the |
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251 | * middle of another template. |
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252 | * This is equivalent to assign($varname, $this->parse($handle, true)) |
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253 | */ |
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254 | function assign_var_from_handle($varname, $handle) |
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255 | { |
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256 | $this->assign($varname, $this->parse($handle, true)); |
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257 | return true; |
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258 | } |
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259 | |
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260 | /** see smarty append http://www.smarty.net/manual/en/api.append.php */ |
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261 | function append($tpl_var, $value=null, $merge=false) |
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262 | { |
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263 | $this->smarty->append( $tpl_var, $value, $merge ); |
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264 | } |
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265 | |
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266 | /** |
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267 | * Root-level variable concatenation. Appends a string to an existing |
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268 | * variable assignment with the same name. |
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269 | */ |
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270 | function concat($tpl_var, $value) |
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271 | { |
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272 | $old_val = & $this->smarty->get_template_vars($tpl_var); |
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273 | if ( isset($old_val) ) |
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274 | { |
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275 | $old_val .= $value; |
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276 | } |
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277 | else |
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278 | { |
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279 | $this->assign($tpl_var, $value); |
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280 | } |
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281 | } |
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282 | |
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283 | /** see smarty append http://www.smarty.net/manual/en/api.clear_assign.php */ |
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284 | function clear_assign($tpl_var) |
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285 | { |
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286 | $this->smarty->clear_assign( $tpl_var ); |
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287 | } |
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288 | |
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289 | /** see smarty get_template_vars http://www.smarty.net/manual/en/api.get_template_vars.php */ |
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290 | function &get_template_vars($name=null) |
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291 | { |
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292 | return $this->smarty->get_template_vars( $name ); |
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293 | } |
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294 | |
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295 | |
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296 | /** |
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297 | * Load the file for the handle, eventually compile the file and run the compiled |
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298 | * code. This will add the output to the results or return the result if $return |
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299 | * is true. |
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300 | */ |
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301 | function parse($handle, $return=false) |
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302 | { |
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303 | if ( !isset($this->files[$handle]) ) |
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304 | { |
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305 | fatal_error("Template->parse(): Couldn't load template file for handle $handle"); |
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306 | } |
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307 | |
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308 | $this->smarty->assign( 'ROOT_URL', get_root_url() ); |
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309 | $this->smarty->assign( 'TAG_INPUT_ENABLED', |
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310 | ((is_adviser()) ? 'disabled="disabled" onclick="return false;"' : '')); |
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311 | |
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312 | $save_compile_id = $this->smarty->compile_id; |
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313 | $this->load_external_filters($handle); |
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314 | |
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315 | global $conf, $lang_info; |
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316 | if ( $conf['compiled_template_cache_language'] and isset($lang_info['code']) ) |
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317 | { |
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318 | $this->smarty->compile_id .= '.'.$lang_info['code']; |
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319 | } |
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320 | |
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321 | $v = $this->smarty->fetch($this->files[$handle], null, null, false); |
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322 | |
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323 | $this->smarty->compile_id = $save_compile_id; |
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324 | $this->unload_external_filters($handle); |
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325 | |
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326 | if ($return) |
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327 | { |
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328 | return $v; |
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329 | } |
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330 | $this->output .= $v; |
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331 | } |
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332 | |
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333 | /** |
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334 | * Load the file for the handle, eventually compile the file and run the compiled |
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335 | * code. This will print out the results of executing the template. |
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336 | */ |
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337 | function pparse($handle) |
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338 | { |
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339 | $this->parse($handle, false); |
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340 | $this->flush(); |
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341 | } |
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342 | |
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343 | function flush() |
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344 | { |
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345 | if ( count($this->html_head_elements) ) |
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346 | { |
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347 | $search = "\n</head>"; |
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348 | $pos = strpos( $this->output, $search ); |
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349 | if ($pos !== false) |
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350 | { |
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351 | $this->output = substr_replace( $this->output, "\n".implode( "\n", $this->html_head_elements ), $pos, 0 ); |
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352 | } //else maybe error or warning ? |
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353 | $this->html_head_elements = array(); |
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354 | } |
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355 | |
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356 | echo $this->output; |
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357 | $this->output=''; |
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358 | } |
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359 | |
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360 | /** flushes the output */ |
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361 | function p() |
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362 | { |
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363 | $this->flush(); |
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364 | |
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365 | if ($this->smarty->debugging) |
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366 | { |
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367 | global $t2; |
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368 | $this->smarty->assign( |
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369 | array( |
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370 | 'AAAA_DEBUG_TOTAL_TIME__' => get_elapsed_time($t2, get_moment()) |
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371 | ) |
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372 | ); |
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373 | require_once(SMARTY_CORE_DIR . 'core.display_debug_console.php'); |
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374 | echo smarty_core_display_debug_console(null, $this->smarty); |
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375 | } |
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376 | } |
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377 | |
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378 | /** |
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379 | * translate variable modifier - translates a text to the currently loaded |
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380 | * language |
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381 | */ |
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382 | static function mod_translate($text) |
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383 | { |
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384 | return l10n($text); |
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385 | } |
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386 | |
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387 | /** |
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388 | * explode variable modifier - similar to php explode |
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389 | * 'Yes;No'|@explode:';' -> array('Yes', 'No') |
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390 | */ |
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391 | static function mod_explode($text, $delimiter=',') |
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392 | { |
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393 | return explode($delimiter, $text); |
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394 | } |
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395 | |
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396 | /** |
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397 | * This smarty "html_head" block allows to add content just before |
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398 | * </head> element in the output after the head has been parsed. This is |
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399 | * handy in order to respect strict standards when <style> and <link> |
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400 | * html elements must appear in the <head> element |
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401 | */ |
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402 | function block_html_head($params, $content, &$smarty, &$repeat) |
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403 | { |
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404 | $content = trim($content); |
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405 | if ( !empty($content) ) |
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406 | { // second call |
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407 | $this->html_head_elements[] = $content; |
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408 | } |
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409 | } |
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410 | |
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411 | /** |
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412 | * This smarty "known_script" functions allows to insert well known java scripts |
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413 | * such as prototype, jquery, etc... only once. Examples: |
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414 | * {known_script id="jquery" src="{$ROOT_URL}template-common/lib/jquery.packed.js"} |
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415 | */ |
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416 | function func_known_script($params, &$smarty ) |
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417 | { |
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418 | if (!isset($params['id'])) |
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419 | { |
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420 | $smarty->trigger_error("known_script: missing 'id' parameter"); |
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421 | return; |
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422 | } |
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423 | $id = $params['id']; |
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424 | if (! isset( $this->known_scripts[$id] ) ) |
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425 | { |
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426 | if (!isset($params['src'])) |
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427 | { |
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428 | $smarty->trigger_error("known_script: missing 'src' parameter"); |
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429 | return; |
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430 | } |
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431 | $this->known_scripts[$id] = $params['src']; |
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432 | $content = '<script type="text/javascript" src="'.$params['src'].'"></script>'; |
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433 | if (isset($params['now']) and $params['now'] and empty($this->output) ) |
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434 | { |
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435 | return $content; |
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436 | } |
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437 | $repeat = false; |
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438 | $this->block_html_head(null, $content, $smarty, $repeat); |
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439 | } |
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440 | } |
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441 | |
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442 | /** |
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443 | * This function allows to declare a Smarty prefilter from a plugin, thus allowing |
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444 | * it to modify template source before compilation and without changing core files |
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445 | * They will be processed by weight ascending. |
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446 | * http://www.smarty.net/manual/en/advanced.features.prefilters.php |
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447 | */ |
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448 | function set_prefilter($handle, $callback, $weight=50) |
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449 | { |
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450 | $this->external_filters[$handle][$weight][] = array('prefilter', $callback); |
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451 | ksort($this->external_filters[$handle]); |
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452 | } |
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453 | |
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454 | function set_postfilter($handle, $callback, $weight=50) |
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455 | { |
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456 | $this->external_filters[$handle][$weight][] = array('postfilter', $callback); |
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457 | ksort($this->external_filters[$handle]); |
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458 | } |
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459 | |
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460 | function set_outputfilter($handle, $callback, $weight=50) |
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461 | { |
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462 | $this->external_filters[$handle][$weight][] = array('outputfilter', $callback); |
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463 | ksort($this->external_filters[$handle]); |
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464 | } |
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465 | |
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466 | /** |
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467 | * This function actually triggers the filters on the tpl files. |
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468 | * Called in the parse method. |
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469 | * http://www.smarty.net/manual/en/advanced.features.prefilters.php |
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470 | */ |
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471 | function load_external_filters($handle) |
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472 | { |
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473 | if (isset($this->external_filters[$handle])) |
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474 | { |
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475 | $compile_id = ''; |
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476 | foreach ($this->external_filters[$handle] as $filters) |
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477 | { |
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478 | foreach ($filters as $filter) |
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479 | { |
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480 | list($type, $callback) = $filter; |
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481 | $compile_id .= $type.( is_array($callback) ? implode('', $callback) : $callback ); |
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482 | call_user_func(array($this->smarty, 'register_'.$type), $callback); |
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483 | } |
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484 | } |
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485 | $this->smarty->compile_id .= '.'.base_convert(crc32($compile_id), 10, 36); |
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486 | } |
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487 | } |
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488 | |
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489 | function unload_external_filters($handle) |
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490 | { |
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491 | if (isset($this->external_filters[$handle])) |
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492 | { |
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493 | foreach ($this->external_filters[$handle] as $filters) |
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494 | { |
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495 | foreach ($filters as $filter) |
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496 | { |
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497 | list($type, $callback) = $filter; |
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498 | call_user_func(array($this->smarty, 'unregister_'.$type), $callback); |
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499 | } |
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500 | } |
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501 | } |
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502 | } |
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503 | |
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504 | static function prefilter_white_space($source, &$smarty) |
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505 | { |
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506 | $ld = $smarty->left_delimiter; |
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507 | $rd = $smarty->right_delimiter; |
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508 | $ldq = preg_quote($ld, '#'); |
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509 | $rdq = preg_quote($rd, '#'); |
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510 | |
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511 | $regex = array(); |
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512 | $tags = array('if', 'foreach', 'section'); |
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513 | foreach($tags as $tag) |
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514 | { |
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515 | array_push($regex, "#^[ \t]+($ldq$tag"."[^$ld$rd]*$rdq)\s*$#m"); |
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516 | array_push($regex, "#^[ \t]+($ldq/$tag$rdq)\s*$#m"); |
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517 | } |
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518 | $tags = array('include', 'else', 'html_head'); |
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519 | foreach($tags as $tag) |
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520 | { |
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521 | array_push($regex, "#^[ \t]+($ldq$tag"."[^$ld$rd]*$rdq)\s*$#m"); |
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522 | } |
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523 | $source = preg_replace( $regex, "$1", $source); |
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524 | return $source; |
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525 | } |
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526 | |
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527 | /** |
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528 | * Smarty prefilter to allow caching (whenever possible) language strings |
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529 | * from templates. |
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530 | */ |
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531 | static function prefilter_language($source, &$smarty) |
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532 | { |
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533 | global $lang; |
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534 | $ldq = preg_quote($smarty->left_delimiter, '~'); |
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535 | $rdq = preg_quote($smarty->right_delimiter, '~'); |
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536 | |
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537 | $regex = "~$ldq *\'([^'$]+)\'\|@translate *$rdq~"; |
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538 | $source = preg_replace( $regex.'e', 'isset($lang[\'$1\']) ? $lang[\'$1\'] : \'$0\'', $source); |
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539 | |
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540 | $regex = "~$ldq *\'([^'$]+)\'\|@translate\|~"; |
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541 | $source = preg_replace( $regex.'e', 'isset($lang[\'$1\']) ? \'{\'.var_export($lang[\'$1\'],true).\'|\' : \'$0\'', $source); |
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542 | |
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543 | $regex = "~($ldq *assign +var=.+ +value=)\'([^'$]+)\'\|@translate~e"; |
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544 | $source = preg_replace( $regex, 'isset($lang[\'$2\']) ? \'$1\'.var_export($lang[\'$2\'],true) : \'$0\'', $source); |
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545 | |
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546 | return $source; |
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547 | } |
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548 | } |
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549 | |
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550 | |
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551 | /** |
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552 | * This class contains basic functions that can be called directly from the |
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553 | * templates in the form $pwg->l10n('edit') |
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554 | */ |
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555 | class PwgTemplateAdapter |
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556 | { |
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557 | function l10n($text) |
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558 | { |
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559 | return l10n($text); |
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560 | } |
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561 | |
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562 | function l10n_dec($s, $p, $v) |
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563 | { |
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564 | return l10n_dec($s, $p, $v); |
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565 | } |
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566 | |
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567 | function sprintf() |
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568 | { |
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569 | $args = func_get_args(); |
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570 | return call_user_func_array('sprintf', $args ); |
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571 | } |
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572 | } |
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573 | |
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574 | ?> |
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