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<?php |
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namespace Caxy\HtmlDiff\Util; |
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/** |
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* Using multi-byte functions have a huge performance impact on the diff algorithm. |
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* |
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* Therefor we added this wrapper around common string function that only uses mb_* functions if they |
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* are necessary for the data-set we are processing. |
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*/ |
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class MbStringUtil |
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{ |
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/** |
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* @var bool |
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*/ |
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protected $mbRequired; |
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public function __construct($oldText, $newText) |
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{ |
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$this->mbRequired = |
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strlen($oldText) !== mb_strlen($oldText) || |
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strlen($newText) !== mb_strlen($newText); |
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if (true === $this->mbRequired) { |
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mb_substitute_character(0x20); |
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} |
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} |
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public function strlen($string) |
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{ |
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if (true === $this->mbRequired) { |
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return mb_strlen($string); |
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} |
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return strlen($string); |
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} |
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public function strpos($haystack, $needle, $offset = 0) |
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{ |
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if (true === $this->mbRequired) { |
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return mb_strpos($haystack, $needle, $offset); |
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} |
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return strpos($haystack, $needle, $offset); |
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} |
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public function stripos($haystack, $needle, $offset = 0) |
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{ |
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if (true === $this->mbRequired) { |
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return mb_stripos($haystack, $needle, $offset); |
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} |
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return stripos($haystack, $needle, $offset); |
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} |
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public function substr($string, $start, $length = null) |
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{ |
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if (true === $this->mbRequired) { |
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return mb_substr($string, $start, $length); |
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} |
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return substr($string, $start, $length); |
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} |
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} |
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caxy /
php-htmldiff
