projects / github / wallabag / wallabag.git / blame
| Commit | Line | Data |
|---|---|---|
| d4949327 NL |
1 | <?php\r |
| 2 | \r | |
| 3 | /**\r | |
| 4 | * Validates shorthand CSS property font.\r | |
| 5 | */\r | |
| 6 | class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef\r | |
| 7 | {\r | |
| 8 | \r | |
| 9 | /**\r | |
| 10 | * Local copy of validators\r | |
| 11 | * @type HTMLPurifier_AttrDef[]\r | |
| 12 | * @note If we moved specific CSS property definitions to their own\r | |
| 13 | * classes instead of having them be assembled at run time by\r | |
| 14 | * CSSDefinition, this wouldn't be necessary. We'd instantiate\r | |
| 15 | * our own copies.\r | |
| 16 | */\r | |
| 17 | protected $info = array();\r | |
| 18 | \r | |
| 19 | /**\r | |
| 20 | * @param HTMLPurifier_Config $config\r | |
| 21 | */\r | |
| 22 | public function __construct($config)\r | |
| 23 | {\r | |
| 24 | $def = $config->getCSSDefinition();\r | |
| 25 | $this->info['font-style'] = $def->info['font-style'];\r | |
| 26 | $this->info['font-variant'] = $def->info['font-variant'];\r | |
| 27 | $this->info['font-weight'] = $def->info['font-weight'];\r | |
| 28 | $this->info['font-size'] = $def->info['font-size'];\r | |
| 29 | $this->info['line-height'] = $def->info['line-height'];\r | |
| 30 | $this->info['font-family'] = $def->info['font-family'];\r | |
| 31 | }\r | |
| 32 | \r | |
| 33 | /**\r | |
| 34 | * @param string $string\r | |
| 35 | * @param HTMLPurifier_Config $config\r | |
| 36 | * @param HTMLPurifier_Context $context\r | |
| 37 | * @return bool|string\r | |
| 38 | */\r | |
| 39 | public function validate($string, $config, $context)\r | |
| 40 | {\r | |
| 41 | static $system_fonts = array(\r | |
| 42 | 'caption' => true,\r | |
| 43 | 'icon' => true,\r | |
| 44 | 'menu' => true,\r | |
| 45 | 'message-box' => true,\r | |
| 46 | 'small-caption' => true,\r | |
| 47 | 'status-bar' => true\r | |
| 48 | );\r | |
| 49 | \r | |
| 50 | // regular pre-processing\r | |
| 51 | $string = $this->parseCDATA($string);\r | |
| 52 | if ($string === '') {\r | |
| 53 | return false;\r | |
| 54 | }\r | |
| 55 | \r | |
| 56 | // check if it's one of the keywords\r | |
| 57 | $lowercase_string = strtolower($string);\r | |
| 58 | if (isset($system_fonts[$lowercase_string])) {\r | |
| 59 | return $lowercase_string;\r | |
| 60 | }\r | |
| 61 | \r | |
| 62 | $bits = explode(' ', $string); // bits to process\r | |
| 63 | $stage = 0; // this indicates what we're looking for\r | |
| 64 | $caught = array(); // which stage 0 properties have we caught?\r | |
| 65 | $stage_1 = array('font-style', 'font-variant', 'font-weight');\r | |
| 66 | $final = ''; // output\r | |
| 67 | \r | |
| 68 | for ($i = 0, $size = count($bits); $i < $size; $i++) {\r | |
| 69 | if ($bits[$i] === '') {\r | |
| 70 | continue;\r | |
| 71 | }\r | |
| 72 | switch ($stage) {\r | |
| 73 | case 0: // attempting to catch font-style, font-variant or font-weight\r | |
| 74 | foreach ($stage_1 as $validator_name) {\r | |
| 75 | if (isset($caught[$validator_name])) {\r | |
| 76 | continue;\r | |
| 77 | }\r | |
| 78 | $r = $this->info[$validator_name]->validate(\r | |
| 79 | $bits[$i],\r | |
| 80 | $config,\r | |
| 81 | $context\r | |
| 82 | );\r | |
| 83 | if ($r !== false) {\r | |
| 84 | $final .= $r . ' ';\r | |
| 85 | $caught[$validator_name] = true;\r | |
| 86 | break;\r | |
| 87 | }\r | |
| 88 | }\r | |
| 89 | // all three caught, continue on\r | |
| 90 | if (count($caught) >= 3) {\r | |
| 91 | $stage = 1;\r | |
| 92 | }\r | |
| 93 | if ($r !== false) {\r | |
| 94 | break;\r | |
| 95 | }\r | |
| 96 | case 1: // attempting to catch font-size and perhaps line-height\r | |
| 97 | $found_slash = false;\r | |
| 98 | if (strpos($bits[$i], '/') !== false) {\r | |
| 99 | list($font_size, $line_height) =\r | |
| 100 | explode('/', $bits[$i]);\r | |
| 101 | if ($line_height === '') {\r | |
| 102 | // ooh, there's a space after the slash!\r | |
| 103 | $line_height = false;\r | |
| 104 | $found_slash = true;\r | |
| 105 | }\r | |
| 106 | } else {\r | |
| 107 | $font_size = $bits[$i];\r | |
| 108 | $line_height = false;\r | |
| 109 | }\r | |
| 110 | $r = $this->info['font-size']->validate(\r | |
| 111 | $font_size,\r | |
| 112 | $config,\r | |
| 113 | $context\r | |
| 114 | );\r | |
| 115 | if ($r !== false) {\r | |
| 116 | $final .= $r;\r | |
| 117 | // attempt to catch line-height\r | |
| 118 | if ($line_height === false) {\r | |
| 119 | // we need to scroll forward\r | |
| 120 | for ($j = $i + 1; $j < $size; $j++) {\r | |
| 121 | if ($bits[$j] === '') {\r | |
| 122 | continue;\r | |
| 123 | }\r | |
| 124 | if ($bits[$j] === '/') {\r | |
| 125 | if ($found_slash) {\r | |
| 126 | return false;\r | |
| 127 | } else {\r | |
| 128 | $found_slash = true;\r | |
| 129 | continue;\r | |
| 130 | }\r | |
| 131 | }\r | |
| 132 | $line_height = $bits[$j];\r | |
| 133 | break;\r | |
| 134 | }\r | |
| 135 | } else {\r | |
| 136 | // slash already found\r | |
| 137 | $found_slash = true;\r | |
| 138 | $j = $i;\r | |
| 139 | }\r | |
| 140 | if ($found_slash) {\r | |
| 141 | $i = $j;\r | |
| 142 | $r = $this->info['line-height']->validate(\r | |
| 143 | $line_height,\r | |
| 144 | $config,\r | |
| 145 | $context\r | |
| 146 | );\r | |
| 147 | if ($r !== false) {\r | |
| 148 | $final .= '/' . $r;\r | |
| 149 | }\r | |
| 150 | }\r | |
| 151 | $final .= ' ';\r | |
| 152 | $stage = 2;\r | |
| 153 | break;\r | |
| 154 | }\r | |
| 155 | return false;\r | |
| 156 | case 2: // attempting to catch font-family\r | |
| 157 | $font_family =\r | |
| 158 | implode(' ', array_slice($bits, $i, $size - $i));\r | |
| 159 | $r = $this->info['font-family']->validate(\r | |
| 160 | $font_family,\r | |
| 161 | $config,\r | |
| 162 | $context\r | |
| 163 | );\r | |
| 164 | if ($r !== false) {\r | |
| 165 | $final .= $r . ' ';\r | |
| 166 | // processing completed successfully\r | |
| 167 | return rtrim($final);\r | |
| 168 | }\r | |
| 169 | return false;\r | |
| 170 | }\r | |
| 171 | }\r | |
| 172 | return false;\r | |
| 173 | }\r | |
| 174 | }\r | |
| 175 | \r | |
| 176 | // vim: et sw=4 sts=4\r |