[1] | 1 | <?php |
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| 2 | /** |
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[362] | 3 | * The Strangecode Codebase - a general application development framework for PHP |
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| 4 | * For details visit the project site: <http://trac.strangecode.com/codebase/> |
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[396] | 5 | * Copyright 2001-2012 Strangecode, LLC |
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[393] | 6 | * |
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[362] | 7 | * This file is part of The Strangecode Codebase. |
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| 8 | * |
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| 9 | * The Strangecode Codebase is free software: you can redistribute it and/or |
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| 10 | * modify it under the terms of the GNU General Public License as published by the |
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| 11 | * Free Software Foundation, either version 3 of the License, or (at your option) |
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| 12 | * any later version. |
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[393] | 13 | * |
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[362] | 14 | * The Strangecode Codebase is distributed in the hope that it will be useful, but |
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
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| 17 | * details. |
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[393] | 18 | * |
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[362] | 19 | * You should have received a copy of the GNU General Public License along with |
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| 20 | * The Strangecode Codebase. If not, see <http://www.gnu.org/licenses/>. |
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| 21 | */ |
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| 22 | |
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| 23 | /** |
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[42] | 24 | * CSS.inc.css |
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[1] | 25 | * |
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| 26 | * Dynamically outputs cached CSS data. |
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| 27 | * |
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| 28 | * @author Quinn Comendant <quinn@strangecode.com> |
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[26] | 29 | * @version 1.2 |
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[1] | 30 | */ |
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| 31 | class CSS { |
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| 32 | |
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| 33 | // Include these style sheets. |
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[468] | 34 | private $_css_files = array('default' => array()); |
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[42] | 35 | |
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[92] | 36 | // CSS object parameters. |
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[468] | 37 | private $_params = array( |
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[1] | 38 | 'character_set' => 'utf-8', |
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[393] | 39 | 'cache_css' => false, |
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| 40 | 'strip_whitespace' => false, |
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| 41 | 'output_compression' => false, |
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[1] | 42 | ); |
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[42] | 43 | |
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[1] | 44 | /** |
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| 45 | * Set (or overwrite existing) parameters by passing an array of new parameters. |
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| 46 | * |
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| 47 | * @access public |
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| 48 | * @param array $params Array of parameters (key => val pairs). |
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| 49 | */ |
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[468] | 50 | public function setParam($params) |
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[1] | 51 | { |
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[136] | 52 | $app =& App::getInstance(); |
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[393] | 53 | |
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[1] | 54 | if (isset($params) && is_array($params)) { |
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| 55 | // Merge new parameters with old overriding only those passed. |
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| 56 | $this->_params = array_merge($this->_params, $params); |
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| 57 | } else { |
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[136] | 58 | $app->logMsg(sprintf('Parameters are not an array: %s', $params), LOG_ERR, __FILE__, __LINE__); |
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[1] | 59 | } |
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| 60 | } |
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| 61 | |
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| 62 | /** |
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| 63 | * Return the value of a parameter, if it exists. |
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| 64 | * |
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| 65 | * @access public |
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| 66 | * @param string $param Which parameter to return. |
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| 67 | * @return mixed Configured parameter value. |
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| 68 | */ |
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[468] | 69 | public function getParam($param) |
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[1] | 70 | { |
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[136] | 71 | $app =& App::getInstance(); |
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[393] | 72 | |
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[478] | 73 | if (array_key_exists($param, $this->_params)) { |
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[1] | 74 | return $this->_params[$param]; |
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| 75 | } else { |
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[146] | 76 | $app->logMsg(sprintf('Parameter is not set: %s', $param), LOG_DEBUG, __FILE__, __LINE__); |
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[1] | 77 | return null; |
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| 78 | } |
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| 79 | } |
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[42] | 80 | |
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[1] | 81 | /** |
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| 82 | * Add a file-path to the array of files to include as CSS. |
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| 83 | * |
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| 84 | * @access public |
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[33] | 85 | * @param string $file Include path to css files. |
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[136] | 86 | * @param mixed $realms Realm name string or array of realm names. |
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[1] | 87 | * @return bool True on success, false on failure. |
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| 88 | */ |
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[468] | 89 | public function setFile($file, $realms='') |
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[1] | 90 | { |
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[136] | 91 | $app =& App::getInstance(); |
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[393] | 92 | |
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[136] | 93 | if (!is_array($realms)) { |
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| 94 | $realms = array($realms); |
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[33] | 95 | } |
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| 96 | |
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[26] | 97 | if ($fp = fopen($file, 'r', true)) { |
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[136] | 98 | foreach ($realms as $realm) { |
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| 99 | $realm = '' == $realm ? 'default' : $realm; |
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| 100 | $this->_css_files[$realm][] = $file; |
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[33] | 101 | } |
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[26] | 102 | fclose($fp); |
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[1] | 103 | return true; |
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| 104 | } else { |
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[136] | 105 | $app->logMsg(sprintf('CSS file non-existent: %s', $file), LOG_ERR, __FILE__, __LINE__); |
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[1] | 106 | return false; |
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| 107 | } |
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| 108 | } |
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| 109 | |
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| 110 | /** |
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| 111 | * Output headers for CSS. |
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| 112 | * |
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| 113 | * @access public |
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| 114 | * |
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| 115 | * @return bool False if no files have been set. |
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| 116 | */ |
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[468] | 117 | public function headers($realm='') |
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[1] | 118 | { |
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[136] | 119 | $app =& App::getInstance(); |
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[393] | 120 | |
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[136] | 121 | $realm = '' == $realm ? 'default' : $realm; |
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[33] | 122 | |
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[136] | 123 | if (empty($this->_css_files[$realm])) { |
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| 124 | $app->logMsg(sprintf('CSS::headers called without specifying any files.', null), LOG_WARNING, __FILE__, __LINE__); |
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[1] | 125 | return false; |
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| 126 | } |
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[26] | 127 | |
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[1] | 128 | // Get time of latest modified file, including this class file. |
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[26] | 129 | $files_mtime = array(); |
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[136] | 130 | foreach (array_merge($this->_css_files[$realm], array(__FILE__)) as $file) { |
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[26] | 131 | $files_mtime[] = statIncludePath($file, 'mtime'); |
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| 132 | } |
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[1] | 133 | sort($files_mtime, SORT_NUMERIC); |
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[26] | 134 | $latest_mtime = array_pop($files_mtime); |
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[42] | 135 | |
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[393] | 136 | if ($this->getParam('output_compression') && extension_loaded('zlib')) { |
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| 137 | ob_start('ob_gzhandler'); |
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| 138 | } |
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| 139 | |
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| 140 | if ($this->getParam('cache_css')) { |
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[26] | 141 | header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $latest_mtime) . ' GMT'); |
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[1] | 142 | header('Cache-Control: public, max-age=86400'); |
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[395] | 143 | header('Pragma: public'); |
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[1] | 144 | } else { |
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| 145 | header('Expires: -1'); |
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| 146 | header('Pragma: no-cache'); |
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| 147 | header('Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0'); |
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| 148 | } |
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[393] | 149 | header('Content-Type: text/css; charset=' . $this->getParam('character_set')); |
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[1] | 150 | } |
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[42] | 151 | |
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[1] | 152 | /** |
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| 153 | * Include CSS files specified by setFile(). |
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| 154 | * |
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| 155 | * @access public |
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| 156 | * |
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| 157 | * @return bool False if no files have been set. |
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| 158 | */ |
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[468] | 159 | public function output($realm='') |
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[1] | 160 | { |
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[473] | 161 | $app =& App::getInstance(); |
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| 162 | |
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[136] | 163 | $realm = '' == $realm ? 'default' : $realm; |
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[33] | 164 | |
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[136] | 165 | if (empty($this->_css_files[$realm])) { |
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| 166 | $app->logMsg(sprintf('CSS::output called without specifying any files.', null), LOG_WARNING, __FILE__, __LINE__); |
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[1] | 167 | return false; |
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| 168 | } |
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[42] | 169 | |
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[136] | 170 | foreach ($this->_css_files[$realm] as $file) { |
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[393] | 171 | if ($this->getParam('strip_whitespace')) { |
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| 172 | // Strip whitespace and print file. |
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[471] | 173 | echo preg_replace( |
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| 174 | array('!/\*.*?\*/!s', '/[\n\r]+/', '/([;:])\s+/m', '/\s*}[ \t]*/', '/\s*{\s*/', '/[ \t\n\r]*,[ \t\n\r]*/', '/^\s+/'), |
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| 175 | array('', "\n", '$1', '}', '{', ',', ''), file_get_contents($file, true) |
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| 176 | ); |
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[393] | 177 | } else { |
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| 178 | // Include file as is. |
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| 179 | include $file; |
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| 180 | } |
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[27] | 181 | } |
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[393] | 182 | |
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| 183 | if ($this->getParam('output_compression') && extension_loaded('zlib')) { |
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| 184 | ob_end_flush(); |
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| 185 | } |
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[1] | 186 | } |
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| 187 | } |
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