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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Stdlib\StringWrapper;
use Zend\Stdlib\Exception;
class Iconv extends AbstractStringWrapper
{
/**
* List of supported character sets (upper case)
*
* @var string[]
* @link http://www.gnu.org/software/libiconv/
*/
protected static $encodings = [
// European languages
'ASCII',
'ISO-8859-1',
'ISO-8859-2',
'ISO-8859-3',
'ISO-8859-4',
'ISO-8859-5',
'ISO-8859-7',
'ISO-8859-9',
'ISO-8859-10',
'ISO-8859-13',
'ISO-8859-14',
'ISO-8859-15',
'ISO-8859-16',
'KOI8-R',
'KOI8-U',
'KOI8-RU',
'CP1250',
'CP1251',
'CP1252',
'CP1253',
'CP1254',
'CP1257',
'CP850',
'CP866',
'CP1131',
'MACROMAN',
'MACCENTRALEUROPE',
'MACICELAND',
'MACCROATIAN',
'MACROMANIA',
'MACCYRILLIC',
'MACUKRAINE',
'MACGREEK',
'MACTURKISH',
'MACINTOSH',
// Semitic languages
'ISO-8859-6',
'ISO-8859-8',
'CP1255',
'CP1256',
'CP862',
'MACHEBREW',
'MACARABIC',
// Japanese
'EUC-JP',
'SHIFT_JIS',
'CP932',
'ISO-2022-JP',
'ISO-2022-JP-2',
'ISO-2022-JP-1',
// Chinese
'EUC-CN',
'HZ',
'GBK',
'CP936',
'GB18030',
'EUC-TW',
'BIG5',
'CP950',
'BIG5-HKSCS',
'BIG5-HKSCS:2004',
'BIG5-HKSCS:2001',
'BIG5-HKSCS:1999',
'ISO-2022-CN',
'ISO-2022-CN-EXT',
// Korean
'EUC-KR',
'CP949',
'ISO-2022-KR',
'JOHAB',
// Armenian
'ARMSCII-8',
// Georgian
'GEORGIAN-ACADEMY',
'GEORGIAN-PS',
// Tajik
'KOI8-T',
// Kazakh
'PT154',
'RK1048',
// Thai
'ISO-8859-11',
'TIS-620',
'CP874',
'MACTHAI',
// Laotian
'MULELAO-1',
'CP1133',
// Vietnamese
'VISCII',
'TCVN',
'CP1258',
// Platform specifics
'HP-ROMAN8',
'NEXTSTEP',
// Full Unicode
'UTF-8',
'UCS-2',
'UCS-2BE',
'UCS-2LE',
'UCS-4',
'UCS-4BE',
'UCS-4LE',
'UTF-16',
'UTF-16BE',
'UTF-16LE',
'UTF-32',
'UTF-32BE',
'UTF-32LE',
'UTF-7',
'C99',
'JAVA',
/* Commented out because that's internal encodings not existing in real world
// Full Unicode, in terms of uint16_t or uint32_t (with machine dependent endianness and alignment)
'UCS-2-INTERNAL',
'UCS-4-INTERNAL',
// Locale dependent, in terms of `char' or `wchar_t' (with machine dependent endianness and alignment,
// and with OS and locale dependent semantics)
'char',
'wchar_t',
'', // The empty encoding name is equivalent to "char": it denotes the locale dependent character encoding.
*/
// When configured with the option --enable-extra-encodings,
// it also provides support for a few extra encodings:
// European languages
'CP437',
'CP737',
'CP775',
'CP852',
'CP853',
'CP855',
'CP857',
'CP858',
'CP860',
'CP861',
'CP863',
'CP865',
'CP869',
'CP1125',
// Semitic languages
'CP864',
// Japanese
'EUC-JISX0213',
'Shift_JISX0213',
'ISO-2022-JP-3',
// Chinese
'BIG5-2003', // (experimental)
// Turkmen
'TDS565',
// Platform specifics
'ATARIST',
'RISCOS-LATIN1',
];
/**
* Get a list of supported character encodings
*
* @return string[]
*/
public static function getSupportedEncodings()
{
return static::$encodings;
}
/**
* Constructor
*
* @throws Exception\ExtensionNotLoadedException
*/
public function __construct()
{
if (! extension_loaded('iconv')) {
throw new Exception\ExtensionNotLoadedException(
'PHP extension "iconv" is required for this wrapper'
);
}
}
/**
* Returns the length of the given string
*
* @param string $str
* @return int|false
*/
public function strlen($str)
{
return iconv_strlen($str, $this->getEncoding());
}
/**
* 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, $length = null)
{
return iconv_substr($str, $offset, $length, $this->getEncoding());
}
/**
* 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, $offset = 0)
{
return iconv_strpos($haystack, $needle, $offset, $this->getEncoding());
}
/**
* Convert a string from defined encoding to the defined convert encoding
*
* @param string $str
* @param bool $reverse
* @return string|false
*/
public function convert($str, $reverse = false)
{
$encoding = $this->getEncoding();
$convertEncoding = $this->getConvertEncoding();
if ($convertEncoding === null) {
throw new Exception\LogicException(
'No convert encoding defined'
);
}
if ($encoding === $convertEncoding) {
return $str;
}
$fromEncoding = $reverse ? $convertEncoding : $encoding;
$toEncoding = $reverse ? $encoding : $convertEncoding;
// automatically add "//IGNORE" to not stop converting on invalid characters
// invalid characters triggers a notice anyway
return iconv($fromEncoding, $toEncoding . '//IGNORE', $str);
}
}
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