Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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Utils.php
001 <?php
002
003 /*
004 * @package s9e\TextFormatter
005 * @copyright Copyright (c) 2010-2016 The s9e Authors
006 * @license http://www.opensource.org/licenses/mit-license.php The MIT License
007 */
008 namespace s9e\TextFormatter;
009 use DOMDocument;
010 use DOMXPath;
011 abstract class Utils
012 {
013 public static function getAttributeValues($xml, $tagName, $attrName)
014 {
015 $values = array();
016 if (\strpos($xml, '<' . $tagName) !== \false)
017 {
018 $regexp = '(<' . \preg_quote($tagName) . '(?= )[^>]*? ' . \preg_quote($attrName) . '="([^"]*+))';
019 \preg_match_all($regexp, $xml, $matches);
020 foreach ($matches[1] as $value)
021 $values[] = \html_entity_decode($value, \ENT_QUOTES, 'UTF-8');
022 }
023 return $values;
024 }
025 public static function encodeUnicodeSupplementaryCharacters($str)
026 {
027 return \preg_replace_callback(
028 '([\\xF0-\\xF4]...)S',
029 __CLASS__ . '::encodeUnicodeSupplementaryCharactersCallback',
030 $str
031 );
032 }
033 public static function removeFormatting($xml)
034 {
035 $dom = self::loadXML($xml);
036 $xpath = new DOMXPath($dom);
037 foreach ($xpath->query('//e | //s') as $node)
038 $node->parentNode->removeChild($node);
039 return $dom->documentElement->textContent;
040 }
041 public static function removeTag($xml, $tagName, $nestingLevel = 0)
042 {
043 if (\strpos($xml, '<' . $tagName) === \false)
044 return $xml;
045 $dom = self::loadXML($xml);
046 $xpath = new DOMXPath($dom);
047 $nodes = $xpath->query(\str_repeat('//' . $tagName, 1 + $nestingLevel));
048 foreach ($nodes as $node)
049 $node->parentNode->removeChild($node);
050 return self::saveXML($dom);
051 }
052 public static function replaceAttributes($xml, $tagName, $callback)
053 {
054 $_self = __CLASS__;
055 if (\strpos($xml, '<' . $tagName) === \false)
056 return $xml;
057 return \preg_replace_callback(
058 '((<' . \preg_quote($tagName) . ')(?=[ />])[^>]*?(/?>))',
059 function ($m) use ($callback, $_self)
060 {
061 return $m[1] . $_self::serializeAttributes($callback($_self::parseAttributes($m[0]))) . $m[2];
062 },
063 $xml
064 );
065 }
066 protected static function encodeUnicodeSupplementaryCharactersCallback(array $m)
067 {
068 $utf8 = $m[0];
069 $cp = (\ord($utf8[0]) << 18) + (\ord($utf8[1]) << 12) + (\ord($utf8[2]) << 6) + \ord($utf8[3]) - 0x3C82080;
070 return '&#' . $cp . ';';
071 }
072 protected static function loadXML($xml)
073 {
074 $flags = (\LIBXML_VERSION >= 20700) ? \LIBXML_COMPACT | \LIBXML_PARSEHUGE : 0;
075 $dom = new DOMDocument;
076 $dom->loadXML($xml, $flags);
077 return $dom;
078 }
079 public static function parseAttributes($xml)
080 {
081 $attributes = array();
082 if (\strpos($xml, '="') !== \false)
083 {
084 \preg_match_all('(([^ =]++)="([^"]*))S', $xml, $matches);
085 foreach ($matches[1] as $i => $attrName)
086 $attributes[$attrName] = \html_entity_decode($matches[2][$i], \ENT_QUOTES, 'UTF-8');
087 }
088 return $attributes;
089 }
090 protected static function saveXML(DOMDocument $dom)
091 {
092 return self::encodeUnicodeSupplementaryCharacters($dom->saveXML($dom->documentElement));
093 }
094 public static function serializeAttributes(array $attributes)
095 {
096 $xml = '';
097 \ksort($attributes);
098 foreach ($attributes as $attrName => $attrValue)
099 $xml .= ' ' . \htmlspecialchars($attrName, \ENT_QUOTES) . '="' . self::encodeUnicodeSupplementaryCharacters(\htmlspecialchars($attrValue, \ENT_COMPAT)) . '"';
100 return $xml;
101 }
102 }