.
*
*/
namespace Friendica\Content;
use Friendica\Core\Hook;
use Friendica\DI;
use Friendica\Util\Strings;
/**
* This class contains functions to handle smiles
*/
class Smilies
{
/**
* 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 $representation The replacement
* @return void
*/
public static function add(array &$b, string $smiley, string $representation)
{
$found = array_search($smiley, $b['texts']);
if (!is_int($found)) {
$b['texts'][] = $smiley;
$b['icons'][] = $representation;
} else {
$b['icons'][$found] = $representation;
}
}
/**
* 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(): array
{
$texts = [
'<3',
'</3',
'<\\3',
':-)',
';-)',
':-(',
':-P',
':-p',
':-"',
':-"',
':-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 = [
'
',
'
',
'',
'
',
'
',
'
',
'
',
'',
'![:-\](' . $baseUrl . '/images/smiley-kiss.gif ":-\")
',
'',
'',
'',
'
',
'
',
'',
'',
'
',
'
',
'',
'',
'',
'
',
'
',
'
',
'
',
'
',
'
',
'',
'
',
'
',
'
',
'
',
'~friendica 
',
'red
matrix',
'redmatrix'
];
$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(array $search, array $replace, string $subject): string
{
return strtr($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
*
* @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(string $s, bool $no_images = false): string
{
$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 and 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(string $text, array $smilies, bool $no_images = false): string
{
if (intval(DI::config()->get('system', 'no_smilies'))
|| (DI::userSession()->getLocalUserId() && intval(DI::pConfig()->get(DI::userSession()->getLocalUserId(), '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, '![]()
(.*?)<\/code>/ism', 'self::decode', $text);
$text = preg_replace_callback('/<(pre)>(.*?)<\/pre>/ism', 'self::decode', $text);
return $text;
}
/**
* Encodes smiley match array to BASE64 string
*
* @param array $m Match array
* @return string base64 encoded string
*/
private static function encode(array $m): string
{
return '<' . $m[1] . '>' . Strings::base64UrlEncode($m[2]) . '';
}
/**
* Decodes a previously BASE64-encoded match array to a string
*
* @param array $m Matches array
* @return string base64 decoded string
* @throws \Exception
*/
private static function decode(array $m): string
{
return '<' . $m[1] . '>' . Strings::base64UrlDecode($m[2]) . '';
}
/**
* expand <3333 to the correct number of hearts
*
* @param array $matches
* @return string HTML Output
*/
private static function heartReplaceCallback(array $matches): string
{
if (strlen($matches[1]) == 1) {
return $matches[0];
}
$t = '';
for ($cnt = 0; $cnt < strlen($matches[1]); $cnt ++) {
$t .= '❤';
}
return str_replace($matches[0], $t, $matches[0]);
}
}