%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
namespace LitEmoji;
class LitEmoji
{
public const MB_REGEX = '/(
\x23\xE2\x83\xA3 # Digits
[\x30-\x39]\xE2\x83\xA3
| \xE2[\x9C-\x9E][\x80-\xBF] # Dingbats
| \xF0\x9F[\x85-\x88][\xA6-\xBF] # Enclosed characters
| \xF0\x9F[\x8C-\x97][\x80-\xBF] # Misc
| \xF0\x9F\x98[\x80-\xBF] # Smilies
| \xF0\x9F\x99[\x80-\x8F]
| \xF0\x9F[\x9A-\x9B][\x80-\xBF] # Transport and map symbols
| \xF0\x9F[\xA4-\xA7][\x80-\xBF] # Supplementary symbols and pictographs
)/x';
private static $shortcodes = [];
private static $shortcodeCodepoints = [];
private static $shortcodeEntities = [];
private static $entityCodepoints = [];
private static $excludedShortcodes = [];
/**
* Converts all unicode emoji and HTML entities to plaintext shortcodes.
*
* @param string $content
* @return string
*/
public static function encodeShortcode(string $content): string
{
$content = self::entitiesToUnicode($content);
$content = self::unicodeToShortcode($content);
return $content;
}
/**
* Converts all plaintext shortcodes and unicode emoji to HTML entities.
*
* @param string $content
* @return string
*/
public static function encodeHtml(string $content): string
{
$content = self::unicodeToShortcode($content);
$content = self::shortcodeToEntities($content);
return $content;
}
/**
* Converts all plaintext shortcodes and HTML entities to unicode codepoints.
*
* @param string $content
* @return string
*/
public static function encodeUnicode(string $content): string
{
$content = self::shortcodeToUnicode($content);
$content = self::entitiesToUnicode($content);
return $content;
}
/**
* Converts plaintext shortcodes to HTML entities.
*
* @param string $content
* @return string
*/
public static function shortcodeToUnicode(string $content): string
{
$replacements = self::getShortcodeCodepoints();
return str_replace(array_keys($replacements), $replacements, $content);
}
/**
* Converts HTML entities to unicode codepoints.
*
* @param string $content
* @return string
*/
public static function entitiesToUnicode(string $content): string
{
/* Convert HTML entities to uppercase hexadecimal */
$content = preg_replace_callback('/\&\#(x?[a-zA-Z0-9]*?)\;/', static function($matches) {
$code = $matches[1];
if ($code[0] == 'x') {
return '&#x' . strtoupper(substr($code, 1)) . ';';
}
return '&#x' . strtoupper(dechex($code)) . ';';
}, $content);
$replacements = self::getEntityCodepoints();
return str_replace(array_keys($replacements), $replacements, $content);
}
/**
* Converts unicode codepoints to plaintext shortcodes.
*
* @param string $content
* @return string
*/
public static function unicodeToShortcode(string $content): string
{
$replacement = '';
$encoding = mb_detect_encoding($content);
$codepoints = array_flip(self::getShortcodes());
/* Break content along codepoint boundaries */
$parts = preg_split(
self::MB_REGEX,
$content,
-1,
PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY
);
/* Reconstruct content using shortcodes */
$sequence = [];
foreach ($parts as $offset => $part) {
if (preg_match(self::MB_REGEX, $part)) {
$part = mb_convert_encoding($part, 'UTF-32', $encoding);
$words = unpack('N*', $part);
$codepoint = sprintf('%X', reset($words));
$sequence[] = $codepoint;
if (isset($codepoints[$codepoint])) {
$replacement .= ":$codepoints[$codepoint]:";
$sequence = [];
} else {
/* Check multi-codepoint sequence */
$multi = implode('-', $sequence);
if (isset($codepoints[$multi])) {
$replacement .= ":$codepoints[$multi]:";
$sequence = [];
}
}
} else {
$replacement .= $part;
}
}
return $replacement;
}
/**
* Converts plain text shortcodes to HTML entities.
*
* @param string $content
* @return string
*/
public static function shortcodeToEntities(string $content): string
{
$replacements = self::getShortcodeEntities();
return str_replace(array_keys($replacements), $replacements, $content);
}
/**
* Sets a configuration property.
*
* @param string $property
* @param mixed $value
*/
public static function config(string $property, $value): void
{
switch ($property) {
case 'excludeShortcodes':
self::$excludedShortcodes = [];
if (!is_array($value)) {
$value = [$value];
}
foreach ($value as $code) {
if (is_string($code)) {
self::$excludedShortcodes[] = $code;
}
}
// Invalidate shortcode cache
self::$shortcodes = [];
break;
}
}
/**
* Removes all emoji-sequences from string.
*
* @param string $source
* @return string
*/
public static function removeEmoji(string $source): string
{
$content = self::encodeShortcode($source);
$content = preg_replace('/\:\w+\:/', '', $content);
return $content;
}
private static function getShortcodes()
{
if (!empty(self::$shortcodes)) {
return self::$shortcodes;
}
// Skip excluded shortcodes
self::$shortcodes = array_filter(require(__DIR__ . '/shortcodes-array.php'), static function($code) {
return !in_array($code, self::$excludedShortcodes);
}, ARRAY_FILTER_USE_KEY);
return self::$shortcodes;
}
private static function getShortcodeCodepoints()
{
if (!empty(self::$shortcodeCodepoints)) {
return self::$shortcodeCodepoints;
}
foreach (self::getShortcodes() as $shortcode => $codepoint) {
$parts = explode('-', $codepoint);
$codepoint = '';
foreach ($parts as $part) {
$codepoint .= mb_convert_encoding(pack('N', hexdec($part)), 'UTF-8', 'UTF-32');
}
self::$shortcodeCodepoints[':' . $shortcode . ':'] = $codepoint;
}
return self::$shortcodeCodepoints;
}
private static function getEntityCodepoints()
{
if (!empty(self::$entityCodepoints)) {
return self::$entityCodepoints;
}
foreach (self::getShortcodes() as $shortcode => $codepoint) {
$parts = explode('-', $codepoint);
$entity = '';
$codepoint = '';
foreach ($parts as $part) {
$entity .= '&#x' . $part . ';';
$codepoint .= mb_convert_encoding(pack('N', hexdec($part)), 'UTF-8', 'UTF-32');
}
self::$entityCodepoints[$entity] = $codepoint;
}
return self::$entityCodepoints;
}
private static function getShortcodeEntities()
{
if (!empty(self::$shortcodeEntities)) {
return self::$shortcodeEntities;
}
foreach (self::getShortcodes() as $shortcode => $codepoint) {
$parts = explode('-', $codepoint);
self::$shortcodeEntities[':' . $shortcode . ':'] = '';
foreach ($parts as $part) {
self::$shortcodeEntities[':' . $shortcode . ':'] .= '&#x' . $part .';';
}
}
return self::$shortcodeEntities;
}
}
Zerion Mini Shell 1.0