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<?php |
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namespace Fatindeed\EmojiHelper; |
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use SplMinHeap; |
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class EmojiData |
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{ |
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/** |
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* Emoji code points. |
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* |
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* @var SplMinHeap |
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*/ |
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private $_data; |
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/** |
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* Line output from. |
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* |
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* @var int |
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*/ |
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private $_from; |
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/** |
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* Reload emoji data from unicode.org. |
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* |
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* @return void |
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* |
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* @see https://unicode.org/Public/emoji/12.1/emoji-data.txt |
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*/ |
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private function reload() |
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{ |
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$this->_data = new SplMinHeap(); |
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$lines = file('https://unicode.org/Public/emoji/12.1/emoji-data.txt'); |
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foreach ($lines as $line) { |
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$line = trim($line); |
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// Skip comments or empty lines |
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if (empty($line) || substr($line, 0, 1) == '#') { |
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continue; |
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} |
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$codePoints = array_map('hexdec', explode('..', trim(strstr($line, ';', true)))); |
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if (count($codePoints) == 1) { |
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$this->insert($codePoints[0]); |
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} elseif (count($codePoints) == 2) { |
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for ($i = $codePoints[0]; $i <= $codePoints[1]; $i++) { |
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$this->insert($i); |
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} |
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} else { |
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trigger_error('Invalid code data - ' . $line, E_USER_ERROR); |
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} |
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} |
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} |
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/** |
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* Insert a code point(decimal). |
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* |
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* @param int $nubmer Code point. |
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* |
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* @return void |
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*/ |
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private function insert(int $nubmer): void |
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{ |
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if ($nubmer > 255) { |
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$this->_data->insert($nubmer); |
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} |
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} |
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/** |
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* Get emoji data content(php). |
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* |
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* @return string |
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*/ |
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public function getContent() |
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{ |
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$this->reload(); |
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$content = '<?php' . PHP_EOL . PHP_EOL; |
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$content .= 'return [' . PHP_EOL; |
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$seq = 0; |
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foreach ($this->_data as $number) { |
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if ($number - $seq > 1) { |
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if ($seq) { |
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$content .= $this->getLine($seq); |
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} |
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$this->_from = $number; |
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} |
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$seq = $number; |
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} |
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$content .= $this->getLine($seq); |
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$content .= '];' . PHP_EOL; |
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return $content; |
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} |
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/** |
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* Get line. |
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* |
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* @param int $seq Number. |
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* |
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* @return string |
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*/ |
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private function getLine(int $seq): string |
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{ |
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$text = self::printCode($this->_from); |
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if ($seq != $this->_from) { |
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$text .= '-' . self::printCode($seq); |
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} |
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return ' \'' . $text . '\',' . PHP_EOL; |
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} |
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/** |
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* Get unicode. |
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* |
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* @param int $nubmer Number. |
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* |
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* @return string |
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*/ |
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private static function printCode(int $nubmer): string |
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{ |
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return '\\x{' . sprintf('%04s', dechex($nubmer)) . '}'; |
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} |
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} |
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fatindeed /
emoji-helper
