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Iconv.php
001 <?php
002 /**
003 * Zend Framework (http://framework.zend.com/)
004 *
005 * @link http://github.com/zendframework/zf2 for the canonical source repository
006 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
007 * @license http://framework.zend.com/license/new-bsd New BSD License
008 */
009
010 namespace Zend\Stdlib\StringWrapper;
011
012 use Zend\Stdlib\Exception;
013
014 class Iconv extends AbstractStringWrapper
015 {
016 /**
017 * List of supported character sets (upper case)
018 *
019 * @var string[]
020 * @link http://www.gnu.org/software/libiconv/
021 */
022 protected static $encodings = array(
023 // European languages
024 'ASCII',
025 'ISO-8859-1',
026 'ISO-8859-2',
027 'ISO-8859-3',
028 'ISO-8859-4',
029 'ISO-8859-5',
030 'ISO-8859-7',
031 'ISO-8859-9',
032 'ISO-8859-10',
033 'ISO-8859-13',
034 'ISO-8859-14',
035 'ISO-8859-15',
036 'ISO-8859-16',
037 'KOI8-R',
038 'KOI8-U',
039 'KOI8-RU',
040 'CP1250',
041 'CP1251',
042 'CP1252',
043 'CP1253',
044 'CP1254',
045 'CP1257',
046 'CP850',
047 'CP866',
048 'CP1131',
049 'MACROMAN',
050 'MACCENTRALEUROPE',
051 'MACICELAND',
052 'MACCROATIAN',
053 'MACROMANIA',
054 'MACCYRILLIC',
055 'MACUKRAINE',
056 'MACGREEK',
057 'MACTURKISH',
058 'MACINTOSH',
059
060 // Semitic languages
061 'ISO-8859-6',
062 'ISO-8859-8',
063 'CP1255',
064 'CP1256',
065 'CP862',
066 'MACHEBREW',
067 'MACARABIC',
068
069 // Japanese
070 'EUC-JP',
071 'SHIFT_JIS',
072 'CP932',
073 'ISO-2022-JP',
074 'ISO-2022-JP-2',
075 'ISO-2022-JP-1',
076
077 // Chinese
078 'EUC-CN',
079 'HZ',
080 'GBK',
081 'CP936',
082 'GB18030',
083 'EUC-TW',
084 'BIG5',
085 'CP950',
086 'BIG5-HKSCS',
087 'BIG5-HKSCS:2004',
088 'BIG5-HKSCS:2001',
089 'BIG5-HKSCS:1999',
090 'ISO-2022-CN',
091 'ISO-2022-CN-EXT',
092
093 // Korean
094 'EUC-KR',
095 'CP949',
096 'ISO-2022-KR',
097 'JOHAB',
098
099 // Armenian
100 'ARMSCII-8',
101
102 // Georgian
103 'GEORGIAN-ACADEMY',
104 'GEORGIAN-PS',
105
106 // Tajik
107 'KOI8-T',
108
109 // Kazakh
110 'PT154',
111 'RK1048',
112
113 // Thai
114 'ISO-8859-11',
115 'TIS-620',
116 'CP874',
117 'MACTHAI',
118
119 // Laotian
120 'MULELAO-1',
121 'CP1133',
122
123 // Vietnamese
124 'VISCII',
125 'TCVN',
126 'CP1258',
127
128 // Platform specifics
129 'HP-ROMAN8',
130 'NEXTSTEP',
131
132 // Full Unicode
133 'UTF-8',
134 'UCS-2',
135 'UCS-2BE',
136 'UCS-2LE',
137 'UCS-4',
138 'UCS-4BE',
139 'UCS-4LE',
140 'UTF-16',
141 'UTF-16BE',
142 'UTF-16LE',
143 'UTF-32',
144 'UTF-32BE',
145 'UTF-32LE',
146 'UTF-7',
147 'C99',
148 'JAVA',
149
150 /* Commented out because that's internal encodings not existing in real world
151 // Full Unicode, in terms of uint16_t or uint32_t (with machine dependent endianness and alignment)
152 'UCS-2-INTERNAL',
153 'UCS-4-INTERNAL',
154
155 // Locale dependent, in terms of `char' or `wchar_t' (with machine dependent endianness and alignment,
156 // and with OS and locale dependent semantics)
157 'char',
158 'wchar_t',
159 '', // The empty encoding name is equivalent to "char": it denotes the locale dependent character encoding.
160 */
161
162 // When configured with the option --enable-extra-encodings,
163 // it also provides support for a few extra encodings:
164
165 // European languages
166 'CP437',
167 'CP737',
168 'CP775',
169 'CP852',
170 'CP853',
171 'CP855',
172 'CP857',
173 'CP858',
174 'CP860',
175 'CP861',
176 'CP863',
177 'CP865',
178 'CP869',
179 'CP1125',
180
181 // Semitic languages
182 'CP864',
183
184 // Japanese
185 'EUC-JISX0213',
186 'Shift_JISX0213',
187 'ISO-2022-JP-3',
188
189 // Chinese
190 'BIG5-2003', // (experimental)
191
192 // Turkmen
193 'TDS565',
194
195 // Platform specifics
196 'ATARIST',
197 'RISCOS-LATIN1',
198 );
199
200 /**
201 * Get a list of supported character encodings
202 *
203 * @return string[]
204 */
205 public static function getSupportedEncodings()
206 {
207 return static::$encodings;
208 }
209
210 /**
211 * Constructor
212 *
213 * @throws Exception\ExtensionNotLoadedException
214 */
215 public function __construct()
216 {
217 if (!extension_loaded('iconv')) {
218 throw new Exception\ExtensionNotLoadedException(
219 'PHP extension "iconv" is required for this wrapper'
220 );
221 }
222 }
223
224 /**
225 * Returns the length of the given string
226 *
227 * @param string $str
228 * @return int|false
229 */
230 public function strlen($str)
231 {
232 return iconv_strlen($str, $this->getEncoding());
233 }
234
235 /**
236 * Returns the portion of string specified by the start and length parameters
237 *
238 * @param string $str
239 * @param int $offset
240 * @param int|null $length
241 * @return string|false
242 */
243 public function substr($str, $offset = 0, $length = null)
244 {
245 return iconv_substr($str, $offset, $length, $this->getEncoding());
246 }
247
248 /**
249 * Find the position of the first occurrence of a substring in a string
250 *
251 * @param string $haystack
252 * @param string $needle
253 * @param int $offset
254 * @return int|false
255 */
256 public function strpos($haystack, $needle, $offset = 0)
257 {
258 return iconv_strpos($haystack, $needle, $offset, $this->getEncoding());
259 }
260
261 /**
262 * Convert a string from defined encoding to the defined convert encoding
263 *
264 * @param string $str
265 * @param bool $reverse
266 * @return string|false
267 */
268 public function convert($str, $reverse = false)
269 {
270 $encoding = $this->getEncoding();
271 $convertEncoding = $this->getConvertEncoding();
272 if ($convertEncoding === null) {
273 throw new Exception\LogicException(
274 'No convert encoding defined'
275 );
276 }
277
278 if ($encoding === $convertEncoding) {
279 return $str;
280 }
281
282 $fromEncoding = $reverse ? $convertEncoding : $encoding;
283 $toEncoding = $reverse ? $encoding : $convertEncoding;
284
285 // automatically add "//IGNORE" to not stop converting on invalid characters
286 // invalid characters triggers a notice anyway
287 return iconv($fromEncoding, $toEncoding . '//IGNORE', $str);
288 }
289 }
290