<?php
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/**
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* @license GNU GPLv3+
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* @author Thomas Bruederli
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* @author Aleksander Machniak
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*/
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class emoticons_engine
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{
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const IMG_PATH = 'program/js/tinymce/plugins/emoticons/img/';
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/**
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* Replaces TinyMCE's emoticon images with plain-text representation
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*
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* @param string $html HTML content
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*
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* @return string HTML content
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*/
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public static function icons2text($html)
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{
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$emoticons = array(
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'8-)' => 'smiley-cool',
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':-#' => 'smiley-foot-in-mouth',
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':-*' => 'smiley-kiss',
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':-X' => 'smiley-sealed',
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':-P' => 'smiley-tongue-out',
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':-@' => 'smiley-yell',
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":'(" => 'smiley-cry',
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':-(' => 'smiley-frown',
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':-D' => 'smiley-laughing',
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':-)' => 'smiley-smile',
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':-S' => 'smiley-undecided',
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':-$' => 'smiley-embarassed',
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'O:-)' => 'smiley-innocent',
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':-|' => 'smiley-money-mouth',
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':-O' => 'smiley-surprised',
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';-)' => 'smiley-wink',
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);
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foreach ($emoticons as $idx => $file) {
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// <img title="Cry" src="http://.../program/js/tinymce/plugins/emoticons/img/smiley-cry.gif" border="0" alt="Cry" />
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$file = preg_quote(self::IMG_PATH . $file . '.gif', '/');
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$search[] = '/<img (title="[a-z ]+" )?src="[^"]+' . $file . '"[^>]+\/>/i';
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$replace[] = $idx;
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}
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return preg_replace($search, $replace, $html);
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}
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/**
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* Replace common plain text emoticons with empticon <img> tags
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*
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* @param string $text Text
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*
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* @return string Converted text
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*/
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public static function text2icons($text)
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{
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// This is a lookbehind assertion which will exclude html entities
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// E.g. situation when ";)" in "")" shouldn't be replaced by the icon
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// It's so long because of assertion format restrictions
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$entity = '(?<!&'
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. '[a-zA-Z0-9]{2}' . '|' . '#[0-9]{2}' . '|'
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. '[a-zA-Z0-9]{3}' . '|' . '#[0-9]{3}' . '|'
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. '[a-zA-Z0-9]{4}' . '|' . '#[0-9]{4}' . '|'
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. '[a-zA-Z0-9]{5}' . '|'
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. '[a-zA-Z0-9]{6}' . '|'
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. '[a-zA-Z0-9]{7}'
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. ')';
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// map of emoticon replacements
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$map = array(
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'/(?<!mailto):D/' => self::img_tag('smiley-laughing.gif', ':D' ),
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'/:-D/' => self::img_tag('smiley-laughing.gif', ':-D' ),
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'/:\(/' => self::img_tag('smiley-frown.gif', ':(' ),
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'/:-\(/' => self::img_tag('smiley-frown.gif', ':-(' ),
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'/'.$entity.';\)/' => self::img_tag('smiley-wink.gif', ';)' ),
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'/'.$entity.';-\)/' => self::img_tag('smiley-wink.gif', ';-)' ),
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'/8\)/' => self::img_tag('smiley-cool.gif', '8)' ),
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'/8-\)/' => self::img_tag('smiley-cool.gif', '8-)' ),
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'/(?<!mailto):O/i' => self::img_tag('smiley-surprised.gif', ':O' ),
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'/(?<!mailto):-O/i' => self::img_tag('smiley-surprised.gif', ':-O' ),
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'/(?<!mailto):P/i' => self::img_tag('smiley-tongue-out.gif', ':P' ),
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'/(?<!mailto):-P/i' => self::img_tag('smiley-tongue-out.gif', ':-P' ),
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'/(?<!mailto):@/i' => self::img_tag('smiley-yell.gif', ':@' ),
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'/(?<!mailto):-@/i' => self::img_tag('smiley-yell.gif', ':-@' ),
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'/O:\)/i' => self::img_tag('smiley-innocent.gif', 'O:)' ),
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'/O:-\)/i' => self::img_tag('smiley-innocent.gif', 'O:-)' ),
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'/(?<!O):\)/' => self::img_tag('smiley-smile.gif', ':)' ),
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'/(?<!O):-\)/' => self::img_tag('smiley-smile.gif', ':-)' ),
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'/(?<!mailto):\$/' => self::img_tag('smiley-embarassed.gif', ':$' ),
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'/(?<!mailto):-\$/' => self::img_tag('smiley-embarassed.gif', ':-$' ),
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'/(?<!mailto):\*/i' => self::img_tag('smiley-kiss.gif', ':*' ),
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'/(?<!mailto):-\*/i' => self::img_tag('smiley-kiss.gif', ':-*' ),
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'/(?<!mailto):S/i' => self::img_tag('smiley-undecided.gif', ':S' ),
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'/(?<!mailto):-S/i' => self::img_tag('smiley-undecided.gif', ':-S' ),
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);
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return preg_replace(array_keys($map), array_values($map), $text);
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}
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protected static function img_tag($ico, $title)
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{
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return html::img(array('src' => './' . self::IMG_PATH . $ico, 'title' => $title));
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}
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/**
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* Replace emoticon icons <img> 'src' attribute, so it can
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* be replaced with real file by Mail_Mime.
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*
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* @param string &$html HTML content
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*
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* @return array List of image files
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*/
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public static function replace(&$html)
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{
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// Replace this:
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// <img src="http[s]://.../tinymce/plugins/emoticons/img/smiley-cool.gif" ... />
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// with this:
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// <img src="/path/on/server/.../tinymce/plugins/emoticons/img/smiley-cool.gif" ... />
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$rcube = rcube::get_instance();
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$assets_dir = $rcube->config->get('assets_dir');
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$path = unslashify($assets_dir ?: INSTALL_PATH) . '/' . self::IMG_PATH;
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$offset = 0;
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$images = array();
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// remove any null-byte characters before parsing
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$html = preg_replace('/\x00/', '', $html);
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if (preg_match_all('# src=[\'"]([^\'"]+)#', $html, $matches, PREG_OFFSET_CAPTURE)) {
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foreach ($matches[1] as $m) {
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// find emoticon image tags
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if (preg_match('#'. self::IMG_PATH . '(.*)$#', $m[0], $imatches)) {
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$image_name = $imatches[1];
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// sanitize image name so resulting attachment doesn't leave images dir
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$image_name = preg_replace('/[^a-zA-Z0-9_\.\-]/i', '', $image_name);
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$image_file = $path . $image_name;
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// Add the same image only once
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$images[$image_name] = $image_file;
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$html = substr_replace($html, $image_file, $m[1] + $offset, strlen($m[0]));
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$offset += strlen($image_file) - strlen($m[0]);
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}
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}
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}
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return $images;
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}
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}
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