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<?php |
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namespace vipnytt\RobotsTxtParser\Handler; |
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use vipnytt\RobotsTxtParser\RobotsTxtInterface; |
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/** |
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* Class EncodingHandler |
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* |
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* @package vipnytt\RobotsTxtParser\Handler |
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*/ |
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class EncodingHandler implements RobotsTxtInterface |
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{ |
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/** |
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* Errors |
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* @var array |
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*/ |
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protected $errors = []; |
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/** |
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* String to convert |
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* @var string |
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*/ |
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private $string; |
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/** |
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* String encoding |
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* @var string |
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*/ |
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private $encoding; |
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/** |
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* EncodingHandler constructor. |
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* |
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* @param string $string |
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* @param string $encoding |
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*/ |
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public function __construct($string, $encoding) |
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{ |
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$this->string = $string; |
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$this->encoding = $encoding; |
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} |
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/** |
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* Auto mode |
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* |
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* @return string|false |
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*/ |
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public function auto() |
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{ |
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if (strtoupper($this->encoding) === self::ENCODING) { |
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return $this->string; |
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} |
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set_error_handler([$this, 'errorHandlerCallback'], E_NOTICE | E_WARNING); |
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foreach ([ |
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'intl', |
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'iconv', |
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'xml', |
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'mbstring', |
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] as $extension |
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) { |
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$last = end($this->errors); |
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if ( |
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extension_loaded($extension) && |
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($result = call_user_func([$this, $extension])) !== false && |
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$last === end($this->errors) |
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) { |
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restore_error_handler(); |
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return $result; |
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} |
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} |
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restore_error_handler(); |
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return false; |
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} |
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/** |
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* intl |
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* @link http://php.net/manual/en/uconverter.convert.php |
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* |
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* @return string|false |
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*/ |
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public function intl() |
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{ |
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try { |
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$uConverter = new \UConverter(self::ENCODING, $this->encoding); |
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$converted = $uConverter->convert($this->string); |
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} catch (\Exception $e) { |
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return false; |
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} |
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return $converted; |
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} |
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/** |
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* iconv |
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* @link http://php.net/manual/en/function.iconv.php |
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* |
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* @param string $outSuffix |
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* @return string|false |
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*/ |
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public function iconv($outSuffix = '//TRANSLIT//IGNORE') |
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{ |
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try { |
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$converted = iconv($this->encoding, self::ENCODING . $outSuffix, $this->string); |
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} catch (\Exception $e) { |
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return false; |
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} |
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return $converted; |
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} |
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/** |
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* xml |
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* @link http://php.net/manual/en/function.utf8-encode.php |
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* |
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* @return string|false |
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*/ |
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public function xml() |
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{ |
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if (strtoupper($this->encoding) !== 'ISO-8859-1') { |
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return false; |
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} |
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try { |
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$converted = utf8_encode($this->string); |
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} catch (\Exception $e) { |
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return false; |
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} |
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return $converted; |
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} |
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/** |
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* mbstring |
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* @link http://php.net/manual/en/function.mb-convert-encoding.php |
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* |
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* @param array|string|null $fromOverride |
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* @return string|false |
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*/ |
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public function mbstring($fromOverride = null) |
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{ |
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try { |
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$converted = mb_convert_encoding($this->string, self::ENCODING, $fromOverride === null ? $this->encoding : $fromOverride); |
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} catch (\Exception $e) { |
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return false; |
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} |
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return $converted; |
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} |
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/** |
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* Custom error handler |
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* |
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* @param int $errNo |
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* @param string $errStr |
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* @param string $errFile |
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* @param string $errLine |
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* @return bool |
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*/ |
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public function errorHandlerCallback($errNo, $errStr, $errFile, $errLine) |
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{ |
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$this->errors[microtime(true)] = "lvl: " . $errNo . " | msg:" . $errStr . " | file:" . $errFile . " | ln:" . $errLine; |
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return true; |
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} |
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} |
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VIPnytt /
RobotsTxtParser
