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<?php |
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/* |
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* This file is part of the HTMLUP package. |
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* |
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* (c) Jitendra Adhikari <[email protected]> |
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* <https://github.com/adhocore> |
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* |
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* Licensed under MIT license. |
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*/ |
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namespace Ahc; |
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class SpanElementParser |
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{ |
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use HtmlHelper; |
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const RE_URL = '~<(https?:[\/]{2}[^\s]+?)>~'; |
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const RE_EMAIL = '~<(\S+?@\S+?)>~'; |
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const RE_MD_IMG = '~!\[(.+?)\]\s*\((.+?)\s*(".+?")?\)~'; |
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const RE_MD_URL = '~\[(.+?)\]\s*\((.+?)\s*(".+?")?\)~'; |
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const RE_MD_FONT = '!(\*{1,2}|_{1,2}|`|~~)(.+?)\\1!'; |
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public function parse($markup) |
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{ |
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return $this->spans( |
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$this->anchors( |
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$this->links($markup) |
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) |
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); |
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} |
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protected function links($markup) |
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{ |
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$markup = $this->emails($markup); |
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return \preg_replace( |
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static::RE_URL, |
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'<a href="$1">$1</a>', |
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$markup |
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); |
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} |
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protected function emails($markup) |
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{ |
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return \preg_replace( |
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static::RE_EMAIL, |
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'<a href="mailto:$1">$1</a>', |
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$markup |
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); |
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} |
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protected function anchors($markup) |
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{ |
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$markup = $this->images($markup); |
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return \preg_replace_callback(static::RE_MD_URL, function ($a) { |
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$title = isset($a[3]) ? " title={$a[3]} " : ''; |
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return "<a href=\"{$a[2]}\"{$title}>{$a[1]}</a>"; |
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}, $markup); |
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} |
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protected function images($markup) |
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{ |
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return \preg_replace_callback(static::RE_MD_IMG, function ($img) { |
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$title = isset($img[3]) ? " title={$img[3]} " : ''; |
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$alt = $img[1] ? " alt=\"{$img[1]}\" " : ''; |
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return "<img src=\"{$img[2]}\"{$title}{$alt}/>"; |
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}, $markup); |
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} |
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protected function spans($markup) |
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{ |
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// em/code/strong/del |
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return \preg_replace_callback(static::RE_MD_FONT, function ($em) { |
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switch (\substr($em[1], 0, 2)) { |
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case '**': |
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case '__': |
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$tag = 'strong'; |
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break; |
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case '~~': |
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$tag = 'del'; |
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break; |
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case $em[1] === '*': |
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case $em[1] === '_': |
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$tag = 'em'; |
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break; |
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default: |
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$tag = 'code'; |
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$em[2] = $this->escape($em[2]); |
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} |
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return "<$tag>{$em[2]}</$tag>"; |
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}, $markup); |
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} |
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} |
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adhocore /
htmlup
