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<?php |
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/** |
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* |
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* Topic Preview |
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* |
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* @copyright (c) 2014 Matt Friedman |
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* @license GNU General Public License, version 2 (GPL-2.0) |
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* |
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*/ |
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namespace vse\topicpreview\core; |
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use vse\topicpreview\core\tools\manager; |
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class trim_tools |
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{ |
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/** @var array An array of trim tools */ |
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protected $trim_tools; |
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/** |
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* Constructor |
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* |
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* @param manager $manager |
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* @access public |
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*/ |
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public function __construct(manager $manager) |
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{ |
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$this->trim_tools = $manager->get_tools(); |
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} |
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/** |
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* Trim and clean text |
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* |
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* @param string $message Message text |
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* @param int $length The length to trim text to |
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* @return string Trimmed message text |
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* @access protected |
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*/ |
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public function trim_text($message, $length) |
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{ |
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// display smileys as text :) |
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$message = smiley_text($message, true); |
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/** @var tools\tool_interface $tool */ |
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foreach ($this->trim_tools as $tool) |
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{ |
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$message = $tool->set_text($message)->run(); |
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} |
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if (utf8_strlen($message) <= $length) |
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{ |
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return $this->tp_nl2br($message); |
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} |
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// trim the text to the last whitespace character before the cut-off |
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$message = preg_replace('/\s+?(\S+)?$/', '', utf8_substr($message, 0, $length)); |
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return $this->tp_nl2br($message) . '...'; |
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} |
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/** |
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* Convert and preserve line breaks |
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* http://stackoverflow.com/questions/816085/removing-redundant-line-breaks-with-regular-expressions |
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* |
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* @param string $message Message text |
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* @return string Message text with line breaks |
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* @access protected |
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*/ |
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protected function tp_nl2br($message) |
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{ |
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return nl2br(preg_replace('/(?:(?:\r\n|\r|\n)\s*){2}/s', "\n\n", $message)); |
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} |
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} |
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iMattPro /
topicpreview
