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1 <?php
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2
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3 /**
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4 * @license GNU GPLv3+
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5 * @author Thomas Bruederli
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6 * @author Aleksander Machniak
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7 */
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8 class emoticons_engine
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9 {
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10 const IMG_PATH = 'program/js/tinymce/plugins/emoticons/img/';
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11
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12 /**
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13 * Replaces TinyMCE's emoticon images with plain-text representation
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14 *
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15 * @param string $html HTML content
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16 *
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17 * @return string HTML content
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18 */
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19 public static function icons2text($html)
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20 {
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21 $emoticons = array(
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22 '8-)' => 'smiley-cool',
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23 ':-#' => 'smiley-foot-in-mouth',
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24 ':-*' => 'smiley-kiss',
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25 ':-X' => 'smiley-sealed',
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26 ':-P' => 'smiley-tongue-out',
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27 ':-@' => 'smiley-yell',
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28 ":'(" => 'smiley-cry',
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29 ':-(' => 'smiley-frown',
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30 ':-D' => 'smiley-laughing',
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31 ':-)' => 'smiley-smile',
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32 ':-S' => 'smiley-undecided',
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33 ':-$' => 'smiley-embarassed',
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34 'O:-)' => 'smiley-innocent',
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35 ':-|' => 'smiley-money-mouth',
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36 ':-O' => 'smiley-surprised',
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37 ';-)' => 'smiley-wink',
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38 );
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39
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40 foreach ($emoticons as $idx => $file) {
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41 // <img title="Cry" src="http://.../program/js/tinymce/plugins/emoticons/img/smiley-cry.gif" border="0" alt="Cry" />
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42 $file = preg_quote(self::IMG_PATH . $file . '.gif', '/');
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43 $search[] = '/<img (title="[a-z ]+" )?src="[^"]+' . $file . '"[^>]+\/>/i';
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44 $replace[] = $idx;
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45 }
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46
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47 return preg_replace($search, $replace, $html);
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48 }
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49
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50 /**
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51 * Replace common plain text emoticons with empticon <img> tags
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52 *
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53 * @param string $text Text
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54 *
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55 * @return string Converted text
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56 */
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57 public static function text2icons($text)
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58 {
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59 // This is a lookbehind assertion which will exclude html entities
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60 // E.g. situation when ";)" in "")" shouldn't be replaced by the icon
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61 // It's so long because of assertion format restrictions
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62 $entity = '(?<!&'
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63 . '[a-zA-Z0-9]{2}' . '|' . '#[0-9]{2}' . '|'
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64 . '[a-zA-Z0-9]{3}' . '|' . '#[0-9]{3}' . '|'
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65 . '[a-zA-Z0-9]{4}' . '|' . '#[0-9]{4}' . '|'
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66 . '[a-zA-Z0-9]{5}' . '|'
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67 . '[a-zA-Z0-9]{6}' . '|'
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68 . '[a-zA-Z0-9]{7}'
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69 . ')';
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70
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71 // map of emoticon replacements
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72 $map = array(
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73 '/(?<!mailto):D/' => self::img_tag('smiley-laughing.gif', ':D' ),
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74 '/:-D/' => self::img_tag('smiley-laughing.gif', ':-D' ),
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75 '/:\(/' => self::img_tag('smiley-frown.gif', ':(' ),
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76 '/:-\(/' => self::img_tag('smiley-frown.gif', ':-(' ),
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77 '/'.$entity.';\)/' => self::img_tag('smiley-wink.gif', ';)' ),
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78 '/'.$entity.';-\)/' => self::img_tag('smiley-wink.gif', ';-)' ),
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79 '/8\)/' => self::img_tag('smiley-cool.gif', '8)' ),
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80 '/8-\)/' => self::img_tag('smiley-cool.gif', '8-)' ),
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81 '/(?<!mailto):O/i' => self::img_tag('smiley-surprised.gif', ':O' ),
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82 '/(?<!mailto):-O/i' => self::img_tag('smiley-surprised.gif', ':-O' ),
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83 '/(?<!mailto):P/i' => self::img_tag('smiley-tongue-out.gif', ':P' ),
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84 '/(?<!mailto):-P/i' => self::img_tag('smiley-tongue-out.gif', ':-P' ),
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85 '/(?<!mailto):@/i' => self::img_tag('smiley-yell.gif', ':@' ),
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86 '/(?<!mailto):-@/i' => self::img_tag('smiley-yell.gif', ':-@' ),
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87 '/O:\)/i' => self::img_tag('smiley-innocent.gif', 'O:)' ),
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88 '/O:-\)/i' => self::img_tag('smiley-innocent.gif', 'O:-)' ),
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89 '/(?<!O):\)/' => self::img_tag('smiley-smile.gif', ':)' ),
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90 '/(?<!O):-\)/' => self::img_tag('smiley-smile.gif', ':-)' ),
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91 '/(?<!mailto):\$/' => self::img_tag('smiley-embarassed.gif', ':$' ),
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92 '/(?<!mailto):-\$/' => self::img_tag('smiley-embarassed.gif', ':-$' ),
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93 '/(?<!mailto):\*/i' => self::img_tag('smiley-kiss.gif', ':*' ),
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94 '/(?<!mailto):-\*/i' => self::img_tag('smiley-kiss.gif', ':-*' ),
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95 '/(?<!mailto):S/i' => self::img_tag('smiley-undecided.gif', ':S' ),
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96 '/(?<!mailto):-S/i' => self::img_tag('smiley-undecided.gif', ':-S' ),
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97 );
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98
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99 return preg_replace(array_keys($map), array_values($map), $text);
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100 }
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101
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102 protected static function img_tag($ico, $title)
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103 {
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104 return html::img(array('src' => './' . self::IMG_PATH . $ico, 'title' => $title));
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105 }
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106
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107 /**
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108 * Replace emoticon icons <img> 'src' attribute, so it can
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109 * be replaced with real file by Mail_Mime.
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110 *
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111 * @param string &$html HTML content
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112 *
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113 * @return array List of image files
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114 */
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115 public static function replace(&$html)
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116 {
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117 // Replace this:
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118 // <img src="http[s]://.../tinymce/plugins/emoticons/img/smiley-cool.gif" ... />
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119 // with this:
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120 // <img src="/path/on/server/.../tinymce/plugins/emoticons/img/smiley-cool.gif" ... />
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121
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122 $rcube = rcube::get_instance();
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123 $assets_dir = $rcube->config->get('assets_dir');
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124 $path = unslashify($assets_dir ?: INSTALL_PATH) . '/' . self::IMG_PATH;
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125 $offset = 0;
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126 $images = array();
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127
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128 // remove any null-byte characters before parsing
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129 $html = preg_replace('/\x00/', '', $html);
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130
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131 if (preg_match_all('# src=[\'"]([^\'"]+)#', $html, $matches, PREG_OFFSET_CAPTURE)) {
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132 foreach ($matches[1] as $m) {
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133 // find emoticon image tags
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134 if (preg_match('#'. self::IMG_PATH . '(.*)$#', $m[0], $imatches)) {
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135 $image_name = $imatches[1];
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136
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137 // sanitize image name so resulting attachment doesn't leave images dir
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138 $image_name = preg_replace('/[^a-zA-Z0-9_\.\-]/i', '', $image_name);
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139 $image_file = $path . $image_name;
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140
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141 // Add the same image only once
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142 $images[$image_name] = $image_file;
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143
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144 $html = substr_replace($html, $image_file, $m[1] + $offset, strlen($m[0]));
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145 $offset += strlen($image_file) - strlen($m[0]);
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146 }
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147 }
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148 }
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149
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150 return $images;
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151 }
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152 }
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