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<?php |
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/** |
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* Validates shorthand CSS property font. |
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*/ |
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class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef |
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{ |
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/** |
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* Local copy of validators |
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* @type HTMLPurifier_AttrDef[] |
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* @note If we moved specific CSS property definitions to their own |
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* classes instead of having them be assembled at run time by |
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* CSSDefinition, this wouldn't be necessary. We'd instantiate |
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* our own copies. |
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*/ |
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protected $info = array(); |
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/** |
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* @param HTMLPurifier_Config $config |
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*/ |
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public function __construct($config) |
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{ |
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$def = $config->getCSSDefinition(); |
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$this->info['font-style'] = $def->info['font-style']; |
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$this->info['font-variant'] = $def->info['font-variant']; |
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$this->info['font-weight'] = $def->info['font-weight']; |
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$this->info['font-size'] = $def->info['font-size']; |
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$this->info['line-height'] = $def->info['line-height']; |
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$this->info['font-family'] = $def->info['font-family']; |
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} |
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/** |
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* @param string $string |
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* @param HTMLPurifier_Config $config |
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* @param HTMLPurifier_Context $context |
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* @return bool|string |
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*/ |
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public function validate($string, $config, $context) |
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{ |
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static $system_fonts = array( |
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'caption' => true, |
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'icon' => true, |
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'menu' => true, |
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'message-box' => true, |
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'small-caption' => true, |
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'status-bar' => true |
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); |
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// regular pre-processing |
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$string = $this->parseCDATA($string); |
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if ($string === '') { |
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return false; |
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} |
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// check if it's one of the keywords |
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$lowercase_string = strtolower($string); |
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if (isset($system_fonts[$lowercase_string])) { |
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return $lowercase_string; |
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} |
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$bits = explode(' ', $string); // bits to process |
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$stage = 0; // this indicates what we're looking for |
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$caught = array(); // which stage 0 properties have we caught? |
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$stage_1 = array('font-style', 'font-variant', 'font-weight'); |
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$final = ''; // output |
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for ($i = 0, $size = count($bits); $i < $size; $i++) { |
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if ($bits[$i] === '') { |
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continue; |
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} |
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switch ($stage) { |
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case 0: // attempting to catch font-style, font-variant or font-weight |
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View Code Duplication |
foreach ($stage_1 as $validator_name) { |
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if (isset($caught[$validator_name])) { |
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continue; |
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} |
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$r = $this->info[$validator_name]->validate( |
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$bits[$i], |
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$config, |
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$context |
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); |
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if ($r !== false) { |
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$final .= $r . ' '; |
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$caught[$validator_name] = true; |
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break; |
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} |
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} |
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// all three caught, continue on |
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if (count($caught) >= 3) { |
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$stage = 1; |
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} |
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if ($r !== false) { |
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break; |
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} |
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case 1: // attempting to catch font-size and perhaps line-height |
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$found_slash = false; |
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if (strpos($bits[$i], '/') !== false) { |
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list($font_size, $line_height) = |
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explode('/', $bits[$i]); |
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if ($line_height === '') { |
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// ooh, there's a space after the slash! |
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$line_height = false; |
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$found_slash = true; |
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} |
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} else { |
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$font_size = $bits[$i]; |
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$line_height = false; |
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} |
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$r = $this->info['font-size']->validate( |
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$font_size, |
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$config, |
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$context |
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); |
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if ($r !== false) { |
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$final .= $r; |
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// attempt to catch line-height |
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if ($line_height === false) { |
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// we need to scroll forward |
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for ($j = $i + 1; $j < $size; $j++) { |
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if ($bits[$j] === '') { |
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continue; |
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} |
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if ($bits[$j] === '/') { |
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if ($found_slash) { |
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return false; |
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} else { |
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$found_slash = true; |
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continue; |
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} |
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} |
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$line_height = $bits[$j]; |
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break; |
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} |
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} else { |
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// slash already found |
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$found_slash = true; |
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$j = $i; |
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} |
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if ($found_slash) { |
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$i = $j; |
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$r = $this->info['line-height']->validate( |
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$line_height, |
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$config, |
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$context |
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); |
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if ($r !== false) { |
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$final .= '/' . $r; |
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} |
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} |
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$final .= ' '; |
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$stage = 2; |
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break; |
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} |
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return false; |
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case 2: // attempting to catch font-family |
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$font_family = |
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implode(' ', array_slice($bits, $i, $size - $i)); |
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$r = $this->info['font-family']->validate( |
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$font_family, |
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$config, |
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$context |
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); |
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if ($r !== false) { |
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$final .= $r . ' '; |
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// processing completed successfully |
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return rtrim($final); |
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} |
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return false; |
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} |
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} |
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return false; |
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} |
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} |
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// vim: et sw=4 sts=4 |
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Hannesalm /
EventCalendar
Loading history...
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.