--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Polyfill\Iconv;
+
+/**
+ * iconv implementation in pure PHP, UTF-8 centric.
+ *
+ * Implemented:
+ * - iconv - Convert string to requested character encoding
+ * - iconv_mime_decode - Decodes a MIME header field
+ * - iconv_mime_decode_headers - Decodes multiple MIME header fields at once
+ * - iconv_get_encoding - Retrieve internal configuration variables of iconv extension
+ * - iconv_set_encoding - Set current setting for character encoding conversion
+ * - iconv_mime_encode - Composes a MIME header field
+ * - iconv_strlen - Returns the character count of string
+ * - iconv_strpos - Finds position of first occurrence of a needle within a haystack
+ * - iconv_strrpos - Finds the last occurrence of a needle within a haystack
+ * - iconv_substr - Cut out part of a string
+ *
+ * Charsets available for conversion are defined by files
+ * in the charset/ directory and by Iconv::$alias below.
+ * You're welcome to send back any addition you make.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+final class Iconv
+{
+ const ERROR_ILLEGAL_CHARACTER = 'iconv(): Detected an illegal character in input string';
+ const ERROR_WRONG_CHARSET = 'iconv(): Wrong charset, conversion from `%s\' to `%s\' is not allowed';
+
+ public static $inputEncoding = 'utf-8';
+ public static $outputEncoding = 'utf-8';
+ public static $internalEncoding = 'utf-8';
+
+ private static $alias = array(
+ 'utf8' => 'utf-8',
+ 'ascii' => 'us-ascii',
+ 'tis-620' => 'iso-8859-11',
+ 'cp1250' => 'windows-1250',
+ 'cp1251' => 'windows-1251',
+ 'cp1252' => 'windows-1252',
+ 'cp1253' => 'windows-1253',
+ 'cp1254' => 'windows-1254',
+ 'cp1255' => 'windows-1255',
+ 'cp1256' => 'windows-1256',
+ 'cp1257' => 'windows-1257',
+ 'cp1258' => 'windows-1258',
+ 'shift-jis' => 'cp932',
+ 'shift_jis' => 'cp932',
+ 'latin1' => 'iso-8859-1',
+ 'latin2' => 'iso-8859-2',
+ 'latin3' => 'iso-8859-3',
+ 'latin4' => 'iso-8859-4',
+ 'latin5' => 'iso-8859-9',
+ 'latin6' => 'iso-8859-10',
+ 'latin7' => 'iso-8859-13',
+ 'latin8' => 'iso-8859-14',
+ 'latin9' => 'iso-8859-15',
+ 'latin10' => 'iso-8859-16',
+ 'iso8859-1' => 'iso-8859-1',
+ 'iso8859-2' => 'iso-8859-2',
+ 'iso8859-3' => 'iso-8859-3',
+ 'iso8859-4' => 'iso-8859-4',
+ 'iso8859-5' => 'iso-8859-5',
+ 'iso8859-6' => 'iso-8859-6',
+ 'iso8859-7' => 'iso-8859-7',
+ 'iso8859-8' => 'iso-8859-8',
+ 'iso8859-9' => 'iso-8859-9',
+ 'iso8859-10' => 'iso-8859-10',
+ 'iso8859-11' => 'iso-8859-11',
+ 'iso8859-12' => 'iso-8859-12',
+ 'iso8859-13' => 'iso-8859-13',
+ 'iso8859-14' => 'iso-8859-14',
+ 'iso8859-15' => 'iso-8859-15',
+ 'iso8859-16' => 'iso-8859-16',
+ 'iso_8859-1' => 'iso-8859-1',
+ 'iso_8859-2' => 'iso-8859-2',
+ 'iso_8859-3' => 'iso-8859-3',
+ 'iso_8859-4' => 'iso-8859-4',
+ 'iso_8859-5' => 'iso-8859-5',
+ 'iso_8859-6' => 'iso-8859-6',
+ 'iso_8859-7' => 'iso-8859-7',
+ 'iso_8859-8' => 'iso-8859-8',
+ 'iso_8859-9' => 'iso-8859-9',
+ 'iso_8859-10' => 'iso-8859-10',
+ 'iso_8859-11' => 'iso-8859-11',
+ 'iso_8859-12' => 'iso-8859-12',
+ 'iso_8859-13' => 'iso-8859-13',
+ 'iso_8859-14' => 'iso-8859-14',
+ 'iso_8859-15' => 'iso-8859-15',
+ 'iso_8859-16' => 'iso-8859-16',
+ 'iso88591' => 'iso-8859-1',
+ 'iso88592' => 'iso-8859-2',
+ 'iso88593' => 'iso-8859-3',
+ 'iso88594' => 'iso-8859-4',
+ 'iso88595' => 'iso-8859-5',
+ 'iso88596' => 'iso-8859-6',
+ 'iso88597' => 'iso-8859-7',
+ 'iso88598' => 'iso-8859-8',
+ 'iso88599' => 'iso-8859-9',
+ 'iso885910' => 'iso-8859-10',
+ 'iso885911' => 'iso-8859-11',
+ 'iso885912' => 'iso-8859-12',
+ 'iso885913' => 'iso-8859-13',
+ 'iso885914' => 'iso-8859-14',
+ 'iso885915' => 'iso-8859-15',
+ 'iso885916' => 'iso-8859-16',
+ );
+ private static $translitMap = array();
+ private static $convertMap = array();
+ private static $errorHandler;
+ private static $lastError;
+
+ private static $ulenMask = array("\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4);
+ private static $isValidUtf8;
+
+ public static function iconv($inCharset, $outCharset, $str)
+ {
+ if ('' === $str .= '') {
+ return '';
+ }
+
+ // Prepare for //IGNORE and //TRANSLIT
+
+ $translit = $ignore = '';
+
+ $outCharset = strtolower($outCharset);
+ $inCharset = strtolower($inCharset);
+
+ if ('' === $outCharset) {
+ $outCharset = 'iso-8859-1';
+ }
+ if ('' === $inCharset) {
+ $inCharset = 'iso-8859-1';
+ }
+
+ if ('//translit' === substr($outCharset, -10)) {
+ $translit = '//TRANSLIT';
+ $outCharset = substr($outCharset, 0, -10);
+ }
+
+ if ('//ignore' === substr($outCharset, -8)) {
+ $ignore = '//IGNORE';
+ $outCharset = substr($outCharset, 0, -8);
+ }
+
+ if ('//translit' === substr($inCharset, -10)) {
+ $inCharset = substr($inCharset, 0, -10);
+ }
+ if ('//ignore' === substr($inCharset, -8)) {
+ $inCharset = substr($inCharset, 0, -8);
+ }
+
+ if (isset(self::$alias[ $inCharset])) {
+ $inCharset = self::$alias[ $inCharset];
+ }
+ if (isset(self::$alias[$outCharset])) {
+ $outCharset = self::$alias[$outCharset];
+ }
+
+ // Load charset maps
+
+ if (('utf-8' !== $inCharset && !self::loadMap('from.', $inCharset, $inMap))
+ || ('utf-8' !== $outCharset && !self::loadMap('to.', $outCharset, $outMap))) {
+ trigger_error(sprintf(self::ERROR_WRONG_CHARSET, $inCharset, $outCharset));
+
+ return false;
+ }
+
+ if ('utf-8' !== $inCharset) {
+ // Convert input to UTF-8
+ $result = '';
+ if (self::mapToUtf8($result, $inMap, $str, $ignore)) {
+ $str = $result;
+ } else {
+ $str = false;
+ }
+ self::$isValidUtf8 = true;
+ } else {
+ self::$isValidUtf8 = preg_match('//u', $str);
+
+ if (!self::$isValidUtf8 && !$ignore) {
+ trigger_error(self::ERROR_ILLEGAL_CHARACTER);
+
+ return false;
+ }
+
+ if ('utf-8' === $outCharset) {
+ // UTF-8 validation
+ $str = self::utf8ToUtf8($str, $ignore);
+ }
+ }
+
+ if ('utf-8' !== $outCharset && false !== $str) {
+ // Convert output to UTF-8
+ $result = '';
+ if (self::mapFromUtf8($result, $outMap, $str, $ignore, $translit)) {
+ return $result;
+ }
+
+ return false;
+ }
+
+ return $str;
+ }
+
+ public static function iconv_mime_decode_headers($str, $mode = 0, $charset = null)
+ {
+ if (null === $charset) {
+ $charset = self::$internalEncoding;
+ }
+
+ if (false !== strpos($str, "\r")) {
+ $str = strtr(str_replace("\r\n", "\n", $str), "\r", "\n");
+ }
+ $str = explode("\n\n", $str, 2);
+
+ $headers = array();
+
+ $str = preg_split('/\n(?![ \t])/', $str[0]);
+ foreach ($str as $str) {
+ $str = self::iconv_mime_decode($str, $mode, $charset);
+ if (false === $str) {
+ return false;
+ }
+ $str = explode(':', $str, 2);
+
+ if (2 === count($str)) {
+ if (isset($headers[$str[0]])) {
+ if (!is_array($headers[$str[0]])) {
+ $headers[$str[0]] = array($headers[$str[0]]);
+ }
+ $headers[$str[0]][] = ltrim($str[1]);
+ } else {
+ $headers[$str[0]] = ltrim($str[1]);
+ }
+ }
+ }
+
+ return $headers;
+ }
+
+ public static function iconv_mime_decode($str, $mode = 0, $charset = null)
+ {
+ if (null === $charset) {
+ $charset = self::$internalEncoding;
+ }
+ if (ICONV_MIME_DECODE_CONTINUE_ON_ERROR & $mode) {
+ $charset .= '//IGNORE';
+ }
+
+ if (false !== strpos($str, "\r")) {
+ $str = strtr(str_replace("\r\n", "\n", $str), "\r", "\n");
+ }
+ $str = preg_split('/\n(?![ \t])/', rtrim($str), 2);
+ $str = preg_replace('/[ \t]*\n[ \t]+/', ' ', rtrim($str[0]));
+ $str = preg_split('/=\?([^?]+)\?([bqBQ])\?(.*?)\?=/', $str, -1, PREG_SPLIT_DELIM_CAPTURE);
+
+ $result = self::iconv('utf-8', $charset, $str[0]);
+ if (false === $result) {
+ return false;
+ }
+
+ $i = 1;
+ $len = count($str);
+
+ while ($i < $len) {
+ $c = strtolower($str[$i]);
+ if ((ICONV_MIME_DECODE_CONTINUE_ON_ERROR & $mode)
+ && 'utf-8' !== $c
+ && !isset(self::$alias[$c])
+ && !self::loadMap('from.', $c, $d)) {
+ $d = false;
+ } elseif ('B' === strtoupper($str[$i + 1])) {
+ $d = base64_decode($str[$i + 2]);
+ } else {
+ $d = rawurldecode(strtr(str_replace('%', '%25', $str[$i + 2]), '=_', '% '));
+ }
+
+ if (false !== $d) {
+ if ('' !== $d) {
+ if ('' === $d = self::iconv($c, $charset, $d)) {
+ $str[$i + 3] = substr($str[$i + 3], 1);
+ } else {
+ $result .= $d;
+ }
+ }
+ $d = self::iconv('utf-8', $charset, $str[$i + 3]);
+ if ('' !== trim($d)) {
+ $result .= $d;
+ }
+ } elseif (ICONV_MIME_DECODE_CONTINUE_ON_ERROR & $mode) {
+ $result .= "=?{$str[$i]}?{$str[$i + 1]}?{$str[$i + 2]}?={$str[$i + 3]}";
+ } else {
+ $result = false;
+ break;
+ }
+
+ $i += 4;
+ }
+
+ return $result;
+ }
+
+ public static function iconv_get_encoding($type = 'all')
+ {
+ switch ($type) {
+ case 'input_encoding': return self::$inputEncoding;
+ case 'output_encoding': return self::$outputEncoding;
+ case 'internal_encoding': return self::$internalEncoding;
+ }
+
+ return array(
+ 'input_encoding' => self::$inputEncoding,
+ 'output_encoding' => self::$outputEncoding,
+ 'internal_encoding' => self::$internalEncoding,
+ );
+ }
+
+ public static function iconv_set_encoding($type, $charset)
+ {
+ switch ($type) {
+ case 'input_encoding': self::$inputEncoding = $charset; break;
+ case 'output_encoding': self::$outputEncoding = $charset; break;
+ case 'internal_encoding': self::$internalEncoding = $charset; break;
+
+ default: return false;
+ }
+
+ return true;
+ }
+
+ public static function iconv_mime_encode($fieldName, $fieldValue, $pref = null)
+ {
+ if (!is_array($pref)) {
+ $pref = array();
+ }
+
+ $pref += array(
+ 'scheme' => 'B',
+ 'input-charset' => self::$internalEncoding,
+ 'output-charset' => self::$internalEncoding,
+ 'line-length' => 76,
+ 'line-break-chars' => "\r\n",
+ );
+
+ if (preg_match('/[\x80-\xFF]/', $fieldName)) {
+ $fieldName = '';
+ }
+
+ $scheme = strtoupper(substr($pref['scheme'], 0, 1));
+ $in = strtolower($pref['input-charset']);
+ $out = strtolower($pref['output-charset']);
+
+ if ('utf-8' !== $in && false === $fieldValue = self::iconv($in, 'utf-8', $fieldValue)) {
+ return false;
+ }
+
+ preg_match_all('/./us', $fieldValue, $chars);
+
+ $chars = isset($chars[0]) ? $chars[0] : array();
+
+ $lineBreak = (int) $pref['line-length'];
+ $lineStart = "=?{$pref['output-charset']}?{$scheme}?";
+ $lineLength = strlen($fieldName) + 2 + strlen($lineStart) + 2;
+ $lineOffset = strlen($lineStart) + 3;
+ $lineData = '';
+
+ $fieldValue = array();
+
+ $Q = 'Q' === $scheme;
+
+ foreach ($chars as $c) {
+ if ('utf-8' !== $out && false === $c = self::iconv('utf-8', $out, $c)) {
+ return false;
+ }
+
+ $o = $Q
+ ? $c = preg_replace_callback(
+ '/[=_\?\x00-\x1F\x80-\xFF]/',
+ array(__CLASS__, 'qpByteCallback'),
+ $c
+ )
+ : base64_encode($lineData.$c);
+
+ if (isset($o[$lineBreak - $lineLength])) {
+ if (!$Q) {
+ $lineData = base64_encode($lineData);
+ }
+ $fieldValue[] = $lineStart.$lineData.'?=';
+ $lineLength = $lineOffset;
+ $lineData = '';
+ }
+
+ $lineData .= $c;
+ $Q && $lineLength += strlen($c);
+ }
+
+ if ('' !== $lineData) {
+ if (!$Q) {
+ $lineData = base64_encode($lineData);
+ }
+ $fieldValue[] = $lineStart.$lineData.'?=';
+ }
+
+ return $fieldName.': '.implode($pref['line-break-chars'].' ', $fieldValue);
+ }
+
+ public static function iconv_strlen($s, $encoding = null)
+ {
+ static $hasXml = null;
+ if (null === $hasXml) {
+ $hasXml = extension_loaded('xml');
+ }
+
+ if ($hasXml) {
+ return self::strlen1($s, $encoding);
+ }
+
+ return self::strlen2($s, $encoding);
+ }
+
+ public static function strlen1($s, $encoding = null)
+ {
+ if (null === $encoding) {
+ $encoding = self::$internalEncoding;
+ }
+ if (0 !== stripos($encoding, 'utf-8') && false === $s = self::iconv($encoding, 'utf-8', $s)) {
+ return false;
+ }
+
+ return strlen(utf8_decode($s));
+ }
+
+ public static function strlen2($s, $encoding = null)
+ {
+ if (null === $encoding) {
+ $encoding = self::$internalEncoding;
+ }
+ if (0 !== stripos($encoding, 'utf-8') && false === $s = self::iconv($encoding, 'utf-8', $s)) {
+ return false;
+ }
+
+ $ulenMask = self::$ulenMask;
+
+ $i = 0;
+ $j = 0;
+ $len = strlen($s);
+
+ while ($i < $len) {
+ $u = $s[$i] & "\xF0";
+ $i += isset($ulenMask[$u]) ? $ulenMask[$u] : 1;
+ ++$j;
+ }
+
+ return $j;
+ }
+
+ public static function iconv_strpos($haystack, $needle, $offset = 0, $encoding = null)
+ {
+ if (null === $encoding) {
+ $encoding = self::$internalEncoding;
+ }
+
+ if (0 !== stripos($encoding, 'utf-8')) {
+ if (false === $haystack = self::iconv($encoding, 'utf-8', $haystack)) {
+ return false;
+ }
+ if (false === $needle = self::iconv($encoding, 'utf-8', $needle)) {
+ return false;
+ }
+ }
+
+ if ($offset = (int) $offset) {
+ $haystack = self::iconv_substr($haystack, $offset, 2147483647, 'utf-8');
+ }
+ $pos = strpos($haystack, $needle);
+
+ return false === $pos ? false : ($offset + ($pos ? self::iconv_strlen(substr($haystack, 0, $pos), 'utf-8') : 0));
+ }
+
+ public static function iconv_strrpos($haystack, $needle, $encoding = null)
+ {
+ if (null === $encoding) {
+ $encoding = self::$internalEncoding;
+ }
+
+ if (0 !== stripos($encoding, 'utf-8')) {
+ if (false === $haystack = self::iconv($encoding, 'utf-8', $haystack)) {
+ return false;
+ }
+ if (false === $needle = self::iconv($encoding, 'utf-8', $needle)) {
+ return false;
+ }
+ }
+
+ $pos = isset($needle[0]) ? strrpos($haystack, $needle) : false;
+
+ return false === $pos ? false : self::iconv_strlen($pos ? substr($haystack, 0, $pos) : $haystack, 'utf-8');
+ }
+
+ public static function iconv_substr($s, $start, $length = 2147483647, $encoding = null)
+ {
+ if (null === $encoding) {
+ $encoding = self::$internalEncoding;
+ }
+ if (0 !== stripos($encoding, 'utf-8')) {
+ $encoding = null;
+ } elseif (false === $s = self::iconv($encoding, 'utf-8', $s)) {
+ return false;
+ }
+
+ $s .= '';
+ $slen = self::iconv_strlen($s, 'utf-8');
+ $start = (int) $start;
+
+ if (0 > $start) {
+ $start += $slen;
+ }
+ if (0 > $start) {
+ return false;
+ }
+ if ($start >= $slen) {
+ return false;
+ }
+
+ $rx = $slen - $start;
+
+ if (0 > $length) {
+ $length += $rx;
+ }
+ if (0 === $length) {
+ return '';
+ }
+ if (0 > $length) {
+ return false;
+ }
+
+ if ($length > $rx) {
+ $length = $rx;
+ }
+
+ $rx = '/^'.($start ? self::pregOffset($start) : '').'('.self::pregOffset($length).')/u';
+
+ $s = preg_match($rx, $s, $s) ? $s[1] : '';
+
+ if (null === $encoding) {
+ return $s;
+ }
+
+ return self::iconv('utf-8', $encoding, $s);
+ }
+
+ private static function loadMap($type, $charset, &$map)
+ {
+ if (!isset(self::$convertMap[$type.$charset])) {
+ if (false === $map = self::getData($type.$charset)) {
+ if ('to.' === $type && self::loadMap('from.', $charset, $map)) {
+ $map = array_flip($map);
+ } else {
+ return false;
+ }
+ }
+
+ self::$convertMap[$type.$charset] = $map;
+ } else {
+ $map = self::$convertMap[$type.$charset];
+ }
+
+ return true;
+ }
+
+ private static function utf8ToUtf8($str, $ignore)
+ {
+ $ulenMask = self::$ulenMask;
+ $valid = self::$isValidUtf8;
+
+ $u = $str;
+ $i = $j = 0;
+ $len = strlen($str);
+
+ while ($i < $len) {
+ if ($str[$i] < "\x80") {
+ $u[$j++] = $str[$i++];
+ } else {
+ $ulen = $str[$i] & "\xF0";
+ $ulen = isset($ulenMask[$ulen]) ? $ulenMask[$ulen] : 1;
+ $uchr = substr($str, $i, $ulen);
+
+ if (1 === $ulen || !($valid || preg_match('/^.$/us', $uchr))) {
+ if ($ignore) {
+ ++$i;
+ continue;
+ }
+
+ trigger_error(self::ERROR_ILLEGAL_CHARACTER);
+
+ return false;
+ } else {
+ $i += $ulen;
+ }
+
+ $u[$j++] = $uchr[0];
+
+ isset($uchr[1]) && 0 !== ($u[$j++] = $uchr[1])
+ && isset($uchr[2]) && 0 !== ($u[$j++] = $uchr[2])
+ && isset($uchr[3]) && 0 !== ($u[$j++] = $uchr[3]);
+ }
+ }
+
+ return substr($u, 0, $j);
+ }
+
+ private static function mapToUtf8(&$result, $map, $str, $ignore)
+ {
+ $len = strlen($str);
+ for ($i = 0; $i < $len; ++$i) {
+ if (isset($str[$i + 1], $map[$str[$i].$str[$i + 1]])) {
+ $result .= $map[$str[$i].$str[++$i]];
+ } elseif (isset($map[$str[$i]])) {
+ $result .= $map[$str[$i]];
+ } elseif (!$ignore) {
+ trigger_error(self::ERROR_ILLEGAL_CHARACTER);
+
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ private static function mapFromUtf8(&$result, $map, $str, $ignore, $translit)
+ {
+ $ulenMask = self::$ulenMask;
+ $valid = self::$isValidUtf8;
+
+ if ($translit && !self::$translitMap) {
+ self::$translitMap = self::getData('translit');
+ }
+
+ $i = 0;
+ $len = strlen($str);
+
+ while ($i < $len) {
+ if ($str[$i] < "\x80") {
+ $uchr = $str[$i++];
+ } else {
+ $ulen = $str[$i] & "\xF0";
+ $ulen = isset($ulenMask[$ulen]) ? $ulenMask[$ulen] : 1;
+ $uchr = substr($str, $i, $ulen);
+
+ if ($ignore && (1 === $ulen || !($valid || preg_match('/^.$/us', $uchr)))) {
+ ++$i;
+ continue;
+ } else {
+ $i += $ulen;
+ }
+ }
+
+ if (isset($map[$uchr])) {
+ $result .= $map[$uchr];
+ } elseif ($translit) {
+ if (isset(self::$translitMap[$uchr])) {
+ $uchr = self::$translitMap[$uchr];
+ } elseif ($uchr >= "\xC3\x80") {
+ $uchr = \Normalizer::normalize($uchr, \Normalizer::NFD);
+
+ if ($uchr[0] < "\x80") {
+ $uchr = $uchr[0];
+ } elseif ($ignore) {
+ continue;
+ } else {
+ return false;
+ }
+ }
+
+ $str = $uchr.substr($str, $i);
+ $len = strlen($str);
+ $i = 0;
+ } elseif (!$ignore) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ private static function qpByteCallback($m)
+ {
+ return '='.strtoupper(dechex(ord($m[0])));
+ }
+
+ private static function pregOffset($offset)
+ {
+ $rx = array();
+ $offset = (int) $offset;
+
+ while ($offset > 65535) {
+ $rx[] = '.{65535}';
+ $offset -= 65535;
+ }
+
+ return implode('', $rx).'.{'.$offset.'}';
+ }
+
+ private static function getData($file)
+ {
+ if (file_exists($file = __DIR__.'/Resources/charset/'.$file.'.php')) {
+ return require $file;
+ }
+
+ return false;
+ }
+}
projects / yaffs-website / blobdiff