3 * @copyright Copyright (C) 2010-2022, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\Content;
24 use Friendica\Core\Hook;
26 use Friendica\Util\Strings;
29 * This class contains functions to handle smiles
35 * Replaces/adds the emoticon list
37 * This function should be used whenever emoticons are added
39 * @param array $b Array of emoticons
40 * @param string $smiley The text smilie
41 * @param string $representation The replacement
45 public static function add(&$b, $smiley, $representation)
47 $found = array_search($smiley, $b['texts']);
49 if (!is_int($found)) {
50 $b['texts'][] = $smiley;
51 $b['icons'][] = $representation;
53 $b['icons'][$found] = $representation;
58 * Function to list all smilies
60 * Get an array of all smilies, both internal and from addons.
63 * 'texts' => smilie shortcut
64 * 'icons' => icon in html
66 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
67 * @hook smilie ('texts' => smilies texts array, 'icons' => smilies html array)
69 public static function getList()
110 $baseUrl = DI::baseUrl();
113 '<img class="smiley" src="' . $baseUrl . '/images/smiley-heart.gif" alt="<3" title="<3" />',
114 '<img class="smiley" src="' . $baseUrl . '/images/smiley-brokenheart.gif" alt="</3" title="</3" />',
115 '<img class="smiley" src="' . $baseUrl . '/images/smiley-brokenheart.gif" alt="<\\3" title="<\\3" />',
116 '<img class="smiley" src="' . $baseUrl . '/images/smiley-smile.gif" alt=":-)" title=":-)" />',
117 '<img class="smiley" src="' . $baseUrl . '/images/smiley-wink.gif" alt=";-)" title=";-)" />',
118 '<img class="smiley" src="' . $baseUrl . '/images/smiley-frown.gif" alt=":-(" title=":-(" />',
119 '<img class="smiley" src="' . $baseUrl . '/images/smiley-tongue-out.gif" alt=":-P" title=":-P" />',
120 '<img class="smiley" src="' . $baseUrl . '/images/smiley-tongue-out.gif" alt=":-p" title=":-P" />',
121 '<img class="smiley" src="' . $baseUrl . '/images/smiley-kiss.gif" alt=":-\" title=":-\" />',
122 '<img class="smiley" src="' . $baseUrl . '/images/smiley-kiss.gif" alt=":-\" title=":-\" />',
123 '<img class="smiley" src="' . $baseUrl . '/images/smiley-kiss.gif" alt=":-x" title=":-x" />',
124 '<img class="smiley" src="' . $baseUrl . '/images/smiley-kiss.gif" alt=":-X" title=":-X" />',
125 '<img class="smiley" src="' . $baseUrl . '/images/smiley-laughing.gif" alt=":-D" title=":-D" />',
126 '<img class="smiley" src="' . $baseUrl . '/images/smiley-surprised.gif" alt="8-|" title="8-|" />',
127 '<img class="smiley" src="' . $baseUrl . '/images/smiley-surprised.gif" alt="8-O" title="8-O" />',
128 '<img class="smiley" src="' . $baseUrl . '/images/smiley-surprised.gif" alt=":-O" title="8-O" />',
129 '<img class="smiley" src="' . $baseUrl . '/images/smiley-thumbsup.gif" alt="\\o/" title="\\o/" />',
130 '<img class="smiley" src="' . $baseUrl . '/images/smiley-Oo.gif" alt="o.O" title="o.O" />',
131 '<img class="smiley" src="' . $baseUrl . '/images/smiley-Oo.gif" alt="O.o" title="O.o" />',
132 '<img class="smiley" src="' . $baseUrl . '/images/smiley-Oo.gif" alt="o_O" title="o_O" />',
133 '<img class="smiley" src="' . $baseUrl . '/images/smiley-Oo.gif" alt="O_o" title="O_o" />',
134 '<img class="smiley" src="' . $baseUrl . '/images/smiley-cry.gif" alt=":\'(" title=":\'("/>',
135 '<img class="smiley" src="' . $baseUrl . '/images/smiley-foot-in-mouth.gif" alt=":-!" title=":-!" />',
136 '<img class="smiley" src="' . $baseUrl . '/images/smiley-undecided.gif" alt=":-/" title=":-/" />',
137 '<img class="smiley" src="' . $baseUrl . '/images/smiley-embarassed.gif" alt=":-[" title=":-[" />',
138 '<img class="smiley" src="' . $baseUrl . '/images/smiley-cool.gif" alt="8-)" title="8-)" />',
139 '<img class="smiley" src="' . $baseUrl . '/images/beer_mug.gif" alt=":beer" title=":beer" />',
140 '<img class="smiley" src="' . $baseUrl . '/images/beer_mug.gif" alt=":homebrew" title=":homebrew" />',
141 '<img class="smiley" src="' . $baseUrl . '/images/coffee.gif" alt=":coffee" title=":coffee" />',
142 '<img class="smiley" src="' . $baseUrl . '/images/smiley-facepalm.gif" alt=":facepalm" title=":facepalm" />',
143 '<img class="smiley" src="' . $baseUrl . '/images/like.gif" alt=":like" title=":like" />',
144 '<img class="smiley" src="' . $baseUrl . '/images/dislike.gif" alt=":dislike" title=":dislike" />',
145 '<a href="https://friendi.ca">~friendica <img class="smiley" src="' . $baseUrl . '/images/friendica-16.png" alt="~friendica" title="~friendica" /></a>',
146 '<a href="http://redmatrix.me/">red<img class="smiley" src="' . $baseUrl . '/images/rm-16.png" alt="red#" title="red#" />matrix</a>',
147 '<a href="http://redmatrix.me/">red<img class="smiley" src="' . $baseUrl . '/images/rm-16.png" alt="red#matrix" title="red#matrix" />matrix</a>'
150 $params = ['texts' => $texts, 'icons' => $icons];
151 Hook::callAll('smilie', $params);
158 * Copied from http://php.net/manual/en/function.str-replace.php#88569
159 * Modified for camel caps: renamed stro_replace -> strOrigReplace
161 * When using str_replace(...), values that did not exist in the original string (but were put there by previous
162 * replacements) will be replaced continuously. This string replacement function is designed to replace the values
163 * in $search with those in $replace while not factoring in prior replacements. Note that this function will
164 * always look for the longest possible match first and then work its way down to individual characters.
166 * @param array $search list of strings or characters that need to be replaced
167 * @param array $replace list of strings or characters that will replace the corresponding values in $search
168 * @param string $subject the string on which this operation is being performed
170 * @return string $subject with all substrings in the $search array replaced by the values in the $replace array
172 private static function strOrigReplace($search, $replace, $subject)
174 return strtr($subject, array_combine($search, $replace));
178 * Replaces text emoticons with graphical images
180 * It is expected that this function will be called using HTML text.
181 * We will escape text between HTML pre and code blocks from being
184 * At a higher level, the bbcode [nosmile] tag can be used to prevent this
185 * function from being executed by the prepare_text() routine when preparing
186 * bbcode source for HTML display
188 * @param string $s Text that should be replaced
189 * @param boolean $no_images Only replace emoticons without images
191 * @return string HTML Output of the Smilie
192 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
194 public static function replace($s, $no_images = false)
196 $smilies = self::getList();
198 $s = self::replaceFromArray($s, $smilies, $no_images);
204 * Replaces emoji shortcodes in a string from a structured array of searches and replaces.
206 * Depends on system.no_smilies config value, skips <pre> and <code> tags.
208 * @param string $text An HTML string
209 * @param array $smilies An string replacement array with the following structure: ['texts' => [], 'icons' => []]
210 * @param bool $no_images Only replace shortcodes without image replacement (e.g. Unicode characters)
212 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
214 public static function replaceFromArray($text, array $smilies, $no_images = false)
216 if (intval(DI::config()->get('system', 'no_smilies'))
217 || (local_user() && intval(DI::pConfig()->get(local_user(), 'system', 'no_smilies')))
222 $text = preg_replace_callback('/<(pre)>(.*?)<\/pre>/ism', 'self::encode', $text);
223 $text = preg_replace_callback('/<(code)>(.*?)<\/code>/ism', 'self::encode', $text);
226 $cleaned = ['texts' => [], 'icons' => []];
227 $icons = $smilies['icons'];
228 foreach ($icons as $key => $icon) {
229 if (!strstr($icon, '<img ')) {
230 $cleaned['texts'][] = $smilies['texts'][$key];
231 $cleaned['icons'][] = $smilies['icons'][$key];
237 $text = preg_replace_callback('/<(3+)/', 'self::pregHeart', $text);
238 $text = self::strOrigReplace($smilies['texts'], $smilies['icons'], $text);
240 $text = preg_replace_callback('/<(code)>(.*?)<\/code>/ism', 'self::decode', $text);
241 $text = preg_replace_callback('/<(pre)>(.*?)<\/pre>/ism', 'self::decode', $text);
247 * @param string $m string
249 * @return string base64 encoded string
251 private static function encode($m)
253 return '<' . $m[1] . '>' . Strings::base64UrlEncode($m[2]) . '</' . $m[1] . '>';
257 * @param string $m string
259 * @return string base64 decoded string
262 private static function decode($m)
264 return '<' . $m[1] . '>' . Strings::base64UrlDecode($m[2]) . '</' . $m[1] . '>';
269 * expand <3333 to the correct number of hearts
271 * @param string $x string
273 * @return string HTML Output
275 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
277 private static function pregHeart($x)
279 if (strlen($x[1]) == 1) {
284 for ($cnt = 0; $cnt < strlen($x[1]); $cnt ++) {
288 $r = str_replace($x[0], $t, $x[0]);