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

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