File Content: Native.php <?php declare(strict_types=1); namespace Laminas\Stdlib\StringWrapper; use Laminas\Stdlib\Exception; use Laminas\Stdlib\StringUtils; use function in_array; use function strlen; use function strpos; use function strtoupper; use function substr; class Native extends AbstractStringWrapper { /** * The character encoding working on * (overwritten to change default encoding) * * @var string */ protected $encoding = 'ASCII'; /** * Check if the given character encoding is supported by this wrapper * and the character encoding to convert to is also supported. * * @param string $encoding * @param string|null $convertEncoding * @return bool */ public static function isSupported($encoding, $convertEncoding = null) { $encodingUpper = strtoupper($encoding); $supportedEncodings = static::getSupportedEncodings(); if (! in_array($encodingUpper, $supportedEncodings)) { return false; } // This adapter doesn't support to convert between encodings if ($convertEncoding !== null && $encodingUpper !== strtoupper($convertEncoding)) { return false; } return true; } /** * Get a list of supported character encodings * * @return string[] */ public static function getSupportedEncodings() { return StringUtils::getSingleByteEncodings(); } /** * Set character encoding working with and convert to * * @param string $encoding The character encoding to work with * @param string|null $convertEncoding The character encoding to convert to * @return StringWrapperInterface */ public function setEncoding($encoding, $convertEncoding = null) { $supportedEncodings = static::getSupportedEncodings(); $encodingUpper = strtoupper($encoding); if (! in_array($encodingUpper, $supportedEncodings)) { throw new Exception\InvalidArgumentException( 'Wrapper doesn\'t support character encoding "' . $encoding . '"' ); } if (null !== $convertEncoding && $encodingUpper !== strtoupper($convertEncoding)) { $this->convertEncoding = $encodingUpper; } if ($convertEncoding !== null) { if ($encodingUpper !== strtoupper($convertEncoding)) { throw new Exception\InvalidArgumentException( 'Wrapper doesn\'t support to convert between character encodings' ); } $this->convertEncoding = $encodingUpper; } else { $this->convertEncoding = null; } $this->encoding = $encodingUpper; return $this; } /** * Returns the length of the given string * * @param string $str * @return int|false */ public function strlen($str) { return strlen($str); } /** * Returns the portion of string specified by the start and length parameters * * @param string $str * @param int $offset * @param int|null $length * @return string|false */ public function substr($str, $offset = 0, $length = null) { return substr($str, $offset, $length); } /** * Find the position of the first occurrence of a substring in a string * * @param string $haystack * @param string $needle * @param int $offset * @return int|false */ public function strpos($haystack, $needle, $offset = 0) { return strpos($haystack, $needle, $offset); } } Submit