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<?php |
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/* |
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* This file is part of the MesHighlightBundle package. |
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* |
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* (c) Francesco Cartenì <http://www.multimediaexperiencestudio.it/> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Mes\Misc\HighlightBundle; |
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/** |
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* Class Highlighter. |
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*/ |
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class Highlighter implements HighlighterInterface |
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{ |
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/** |
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* @var \Highlight\Highlighter |
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*/ |
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private $h; |
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/** |
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* @var string |
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*/ |
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private $root; |
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/** |
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* @var string |
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*/ |
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private $leftDelimiter; |
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/** |
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* @var string |
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*/ |
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private $rightDelimiter; |
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/** |
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* @var array |
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*/ |
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private $supportedLanguages = array(); |
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/** |
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* @var bool |
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*/ |
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private $showLines = true; |
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/** |
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* Highlighter constructor. |
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* |
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* @param array $languages |
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* @param $root |
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* @param $leftDelimiter |
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* @param $rightDelimiter |
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*/ |
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public function __construct(array $languages, $root, $leftDelimiter, $rightDelimiter) |
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{ |
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$this->leftDelimiter = $leftDelimiter; |
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$this->rightDelimiter = $rightDelimiter; |
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$this->root = $root; |
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$this->h = new \Highlight\Highlighter(); |
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// Set the languages you want to detect automatically. |
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$this->addSupportedLanguages($languages); |
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} |
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/** |
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* @param $content |
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* @param null $language |
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* |
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* @return string |
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*/ |
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public function searchPatternAndHighlight($content, $language = null) |
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{ |
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$pattern = '#(?:'.$this->leftDelimiter.')([\S|\s]+)(?:'.$this->rightDelimiter.')#iU'; |
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return preg_replace_callback($pattern, function ($matches) use ($language) { |
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return $this->highlight($this->resolveResource(trim($matches[1])), $language); |
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}, $content); |
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} |
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/** |
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* @param $content |
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* @param null $language |
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* |
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* @return string|void |
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*/ |
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public function highlight($content, $language = null) |
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{ |
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// Highlight some code. |
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$r = null === $language ? $this->h->highlightAuto($content) : $this->h->highlight($language, $content); |
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if (!($value = $r->value)) { |
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return; |
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} |
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if ($this->showLines) { |
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$lines = preg_split("/\r\n|\r|\n/", $value); |
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array_walk($lines, function (&$line, $index) { |
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$line = <<<HTML |
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<div class="line"><span class="linenum">$index</span>$line</div> |
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HTML; |
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}); |
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$value = implode('', $lines); |
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} |
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return <<<HTML |
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<pre class="hljs $r->language">$value</pre> |
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HTML; |
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} |
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/** |
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* Set root location for "code files". |
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* |
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* @param $rootPath |
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*/ |
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public function setRootPath($rootPath) |
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{ |
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if ('/' !== substr($rootPath, -1)) { |
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$rootPath .= '/'; |
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} |
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$this->root = $rootPath; |
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} |
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/** |
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* Add supported languages for highlighting. |
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* |
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* @param array $supportedLanguages |
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*/ |
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public function addSupportedLanguages(array $supportedLanguages) |
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{ |
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$this->supportedLanguages = array_merge($this->supportedLanguages, $supportedLanguages); |
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$this->h->setAutodetectLanguages($this->supportedLanguages); |
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} |
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/** |
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* @param $resource |
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* |
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* @return string |
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*/ |
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protected function resolveResource($resource) |
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{ |
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if (is_file($this->root.$resource)) { |
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$resource = file_get_contents($this->root.$resource); |
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} |
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return trim($resource); |
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} |
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} |
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Carteni /
highlight-bundle
