Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file src/Content/Smilies.php
* @brief This file contains the Smilies class which contains functions to handle smiles
*
* @todo Use the shortcodes from here:
* https://github.com/iamcal/emoji-data/blob/master/emoji_pretty.json?raw=true
* https://raw.githubusercontent.com/emojione/emojione/master/extras/alpha-codes/eac.json?raw=true
* https://github.com/johannhof/emoji-helper/blob/master/data/emoji.json?raw=true
*
* Have also a look here:
* https://www.webpagefx.com/tools/emoji-cheat-sheet/
*/
namespace Friendica\Content;
use Friendica\Core\Config;
use Friendica\Core\Hook;
use Friendica\DI;
use Friendica\Util\Strings;
/**
* This class contains functions to handle smiles
*/
class Smilies
{
/**
* @brief Replaces/adds the emoticon list
*
* This function should be used whenever emoticons are added
*
* @param array $b Array of emoticons
* @param string $smiley The text smilie
* @param string $representation The replacement
*
* @return void
*/
public static function add(&$b, $smiley, $representation)
{
$found = array_search($smiley, $b['texts']);
if (!is_int($found)) {
$b['texts'][] = $smiley;
$b['icons'][] = $representation;
} else {
$b['icons'][$found] = $representation;
}
}
/**
* @brief Function to list all smilies
*
* Get an array of all smilies, both internal and from addons.
*
* @return array
* 'texts' => smilie shortcut
* 'icons' => icon in html
*
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @hook smilie ('texts' => smilies texts array, 'icons' => smilies html array)
*/
public static function getList()
{
$texts = [
'&lt;3',
'&lt;/3',
'&lt;\\3',
':-)',
';-)',
':-(',
':-P',
':-p',
':-"',
':-&quot;',
':-x',
':-X',
':-D',
'8-|',
'8-O',
':-O',
'\\o/',
'o.O',
'O.o',
'o_O',
'O_o',
":'(",
":-!",
":-/",
":-[",
"8-)",
':beer',
':homebrew',
':coffee',
':facepalm',
':like',
':dislike',
'~friendica',
'red#',
'red#matrix'
];
$baseUrl = DI::baseUrl();
$icons = [
'<img class="smiley" src="' . $baseUrl . '/images/smiley-heart.gif" alt="&lt;3" title="&lt;3" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-brokenheart.gif" alt="&lt;/3" title="&lt;/3" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-brokenheart.gif" alt="&lt;\\3" title="&lt;\\3" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-smile.gif" alt=":-)" title=":-)" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-wink.gif" alt=";-)" title=";-)" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-frown.gif" alt=":-(" title=":-(" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-tongue-out.gif" alt=":-P" title=":-P" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-tongue-out.gif" alt=":-p" title=":-P" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-kiss.gif" alt=":-\" title=":-\" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-kiss.gif" alt=":-\" title=":-\" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-kiss.gif" alt=":-x" title=":-x" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-kiss.gif" alt=":-X" title=":-X" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-laughing.gif" alt=":-D" title=":-D" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-surprised.gif" alt="8-|" title="8-|" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-surprised.gif" alt="8-O" title="8-O" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-surprised.gif" alt=":-O" title="8-O" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-thumbsup.gif" alt="\\o/" title="\\o/" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-Oo.gif" alt="o.O" title="o.O" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-Oo.gif" alt="O.o" title="O.o" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-Oo.gif" alt="o_O" title="o_O" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-Oo.gif" alt="O_o" title="O_o" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-cry.gif" alt=":\'(" title=":\'("/>',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-foot-in-mouth.gif" alt=":-!" title=":-!" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-undecided.gif" alt=":-/" title=":-/" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-embarassed.gif" alt=":-[" title=":-[" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-cool.gif" alt="8-)" title="8-)" />',
'<img class="smiley" src="' . $baseUrl . '/images/beer_mug.gif" alt=":beer" title=":beer" />',
'<img class="smiley" src="' . $baseUrl . '/images/beer_mug.gif" alt=":homebrew" title=":homebrew" />',
'<img class="smiley" src="' . $baseUrl . '/images/coffee.gif" alt=":coffee" title=":coffee" />',
'<img class="smiley" src="' . $baseUrl . '/images/smiley-facepalm.gif" alt=":facepalm" title=":facepalm" />',
'<img class="smiley" src="' . $baseUrl . '/images/like.gif" alt=":like" title=":like" />',
'<img class="smiley" src="' . $baseUrl . '/images/dislike.gif" alt=":dislike" title=":dislike" />',
'<a href="https://friendi.ca">~friendica <img class="smiley" src="' . $baseUrl . '/images/friendica-16.png" alt="~friendica" title="~friendica" /></a>',
'<a href="http://redmatrix.me/">red<img class="smiley" src="' . $baseUrl . '/images/rm-16.png" alt="red#" title="red#" />matrix</a>',
'<a href="http://redmatrix.me/">red<img class="smiley" src="' . $baseUrl . '/images/rm-16.png" alt="red#matrix" title="red#matrix" />matrix</a>'
];
$params = ['texts' => $texts, 'icons' => $icons];
Hook::callAll('smilie', $params);
return $params;
}
/**
* Copied from http://php.net/manual/en/function.str-replace.php#88569
* Modified for camel caps: renamed stro_replace -> strOrigReplace
*
* When using str_replace(...), values that did not exist in the original string (but were put there by previous
* replacements) will be replaced continuously. This string replacement function is designed to replace the values
* in $search with those in $replace while not factoring in prior replacements. Note that this function will
* always look for the longest possible match first and then work its way down to individual characters.
*
* @param array $search list of strings or characters that need to be replaced
* @param array $replace list of strings or characters that will replace the corresponding values in $search
* @param string $subject the string on which this operation is being performed
*
* @return string $subject with all substrings in the $search array replaced by the values in the $replace array
*/
private static function strOrigReplace($search, $replace, $subject)
{
return strtr($subject, array_combine($search, $replace));
}
/**
* Replaces text emoticons with graphical images
*
* It is expected that this function will be called using HTML text.
* We will escape text between HTML pre and code blocks from being
* processed.
*
* At a higher level, the bbcode [nosmile] tag can be used to prevent this
* function from being executed by the prepare_text() routine when preparing
* bbcode source for HTML display
*
* @brief Replaces text emoticons with graphical images
* @param string $s Text that should be replaced
* @param boolean $no_images Only replace emoticons without images
*
* @return string HTML Output of the Smilie
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function replace($s, $no_images = false)
{
$smilies = self::getList();
$s = self::replaceFromArray($s, $smilies, $no_images);
return $s;
}
/**
* Replaces emoji shortcodes in a string from a structured array of searches and replaces.
*
* Depends on system.no_smilies config value, skips <pre> and <code> tags.
*
* @param string $text An HTML string
* @param array $smilies An string replacement array with the following structure: ['texts' => [], 'icons' => []]
* @param bool $no_images Only replace shortcodes without image replacement (e.g. Unicode characters)
* @return string
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function replaceFromArray($text, array $smilies, $no_images = false)
{
if (intval(Config::get('system', 'no_smilies'))
|| (local_user() && intval(DI::pConfig()->get(local_user(), 'system', 'no_smilies')))
) {
return $text;
}
$text = preg_replace_callback('/<(pre)>(.*?)<\/pre>/ism', 'self::encode', $text);
$text = preg_replace_callback('/<(code)>(.*?)<\/code>/ism', 'self::encode', $text);
if ($no_images) {
$cleaned = ['texts' => [], 'icons' => []];
$icons = $smilies['icons'];
foreach ($icons as $key => $icon) {
if (!strstr($icon, '<img ')) {
$cleaned['texts'][] = $smilies['texts'][$key];
$cleaned['icons'][] = $smilies['icons'][$key];
}
}
$smilies = $cleaned;
}
$text = preg_replace_callback('/&lt;(3+)/', 'self::pregHeart', $text);
$text = self::strOrigReplace($smilies['texts'], $smilies['icons'], $text);
$text = preg_replace_callback('/<(code)>(.*?)<\/code>/ism', 'self::decode', $text);
$text = preg_replace_callback('/<(pre)>(.*?)<\/pre>/ism', 'self::decode', $text);
return $text;
}
/**
* @param string $m string
*
* @return string base64 encoded string
*/
private static function encode($m)
{
return '<' . $m[1] . '>' . Strings::base64UrlEncode($m[2]) . '</' . $m[1] . '>';
}
/**
* @param string $m string
*
* @return string base64 decoded string
* @throws \Exception
*/
private static function decode($m)
{
return '<' . $m[1] . '>' . Strings::base64UrlDecode($m[2]) . '</' . $m[1] . '>';
}
/**
* @brief expand <3333 to the correct number of hearts
*
* @param string $x string
*
* @return string HTML Output
*
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
private static function pregHeart($x)
{
if (strlen($x[1]) == 1) {
return $x[0];
}
$t = '';
for ($cnt = 0; $cnt < strlen($x[1]); $cnt ++) {
$t .= '❤';
}
$r = str_replace($x[0], $t, $x[0]);
return $r;
}
}