331 lines
11 KiB
PHP
331 lines
11 KiB
PHP
<?php
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/*
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Copyright (c) 2008 Sebastián Grignoli
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of copyright holders nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS OR CONTRIBUTORS
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BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @author "Sebastián Grignoli" <grignoli@framework2.com.ar>
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* @package Encoding
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* @version 1.2
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* @link https://github.com/neitanod/forceutf8
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* @example https://github.com/neitanod/forceutf8
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* @license Revised BSD
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*/
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namespace PicoFeed;
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class Encoding {
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protected static $win1252ToUtf8 = array(
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128 => "\xe2\x82\xac",
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130 => "\xe2\x80\x9a",
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131 => "\xc6\x92",
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132 => "\xe2\x80\x9e",
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133 => "\xe2\x80\xa6",
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134 => "\xe2\x80\xa0",
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135 => "\xe2\x80\xa1",
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136 => "\xcb\x86",
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137 => "\xe2\x80\xb0",
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138 => "\xc5\xa0",
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139 => "\xe2\x80\xb9",
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140 => "\xc5\x92",
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142 => "\xc5\xbd",
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145 => "\xe2\x80\x98",
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146 => "\xe2\x80\x99",
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147 => "\xe2\x80\x9c",
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148 => "\xe2\x80\x9d",
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149 => "\xe2\x80\xa2",
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150 => "\xe2\x80\x93",
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151 => "\xe2\x80\x94",
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152 => "\xcb\x9c",
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153 => "\xe2\x84\xa2",
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154 => "\xc5\xa1",
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155 => "\xe2\x80\xba",
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156 => "\xc5\x93",
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158 => "\xc5\xbe",
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159 => "\xc5\xb8"
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);
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protected static $brokenUtf8ToUtf8 = array(
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"\xc2\x80" => "\xe2\x82\xac",
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"\xc2\x82" => "\xe2\x80\x9a",
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"\xc2\x83" => "\xc6\x92",
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"\xc2\x84" => "\xe2\x80\x9e",
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"\xc2\x85" => "\xe2\x80\xa6",
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"\xc2\x86" => "\xe2\x80\xa0",
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"\xc2\x87" => "\xe2\x80\xa1",
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"\xc2\x88" => "\xcb\x86",
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"\xc2\x89" => "\xe2\x80\xb0",
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"\xc2\x8a" => "\xc5\xa0",
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"\xc2\x8b" => "\xe2\x80\xb9",
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"\xc2\x8c" => "\xc5\x92",
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"\xc2\x8e" => "\xc5\xbd",
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"\xc2\x91" => "\xe2\x80\x98",
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"\xc2\x92" => "\xe2\x80\x99",
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"\xc2\x93" => "\xe2\x80\x9c",
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"\xc2\x94" => "\xe2\x80\x9d",
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"\xc2\x95" => "\xe2\x80\xa2",
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"\xc2\x96" => "\xe2\x80\x93",
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"\xc2\x97" => "\xe2\x80\x94",
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"\xc2\x98" => "\xcb\x9c",
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"\xc2\x99" => "\xe2\x84\xa2",
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"\xc2\x9a" => "\xc5\xa1",
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"\xc2\x9b" => "\xe2\x80\xba",
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"\xc2\x9c" => "\xc5\x93",
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"\xc2\x9e" => "\xc5\xbe",
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"\xc2\x9f" => "\xc5\xb8"
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);
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protected static $utf8ToWin1252 = array(
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"\xe2\x82\xac" => "\x80",
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"\xe2\x80\x9a" => "\x82",
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"\xc6\x92" => "\x83",
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"\xe2\x80\x9e" => "\x84",
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"\xe2\x80\xa6" => "\x85",
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"\xe2\x80\xa0" => "\x86",
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"\xe2\x80\xa1" => "\x87",
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"\xcb\x86" => "\x88",
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"\xe2\x80\xb0" => "\x89",
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"\xc5\xa0" => "\x8a",
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"\xe2\x80\xb9" => "\x8b",
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"\xc5\x92" => "\x8c",
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"\xc5\xbd" => "\x8e",
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"\xe2\x80\x98" => "\x91",
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"\xe2\x80\x99" => "\x92",
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"\xe2\x80\x9c" => "\x93",
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"\xe2\x80\x9d" => "\x94",
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"\xe2\x80\xa2" => "\x95",
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"\xe2\x80\x93" => "\x96",
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"\xe2\x80\x94" => "\x97",
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"\xcb\x9c" => "\x98",
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"\xe2\x84\xa2" => "\x99",
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"\xc5\xa1" => "\x9a",
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"\xe2\x80\xba" => "\x9b",
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"\xc5\x93" => "\x9c",
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"\xc5\xbe" => "\x9e",
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"\xc5\xb8" => "\x9f"
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);
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static function toUTF8($text){
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/**
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* Function Encoding::toUTF8
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*
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* This function leaves UTF8 characters alone, while converting almost all non-UTF8 to UTF8.
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*
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* It assumes that the encoding of the original string is either Windows-1252 or ISO 8859-1.
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*
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* It may fail to convert characters to UTF-8 if they fall into one of these scenarios:
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*
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* 1) when any of these characters: ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß
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* are followed by any of these: ("group B")
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* ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶•¸¹º»¼½¾¿
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* For example: %ABREPRESENT%C9%BB. «REPRESENTÉ»
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* The "«" (%AB) character will be converted, but the "É" followed by "»" (%C9%BB)
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* is also a valid unicode character, and will be left unchanged.
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*
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* 2) when any of these: àáâãäåæçèéêëìíîï are followed by TWO chars from group B,
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* 3) when any of these: ðñòó are followed by THREE chars from group B.
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*
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* @name toUTF8
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* @param string $text Any string.
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* @return string The same string, UTF8 encoded
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*
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*/
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if(is_array($text))
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{
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foreach($text as $k => $v)
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{
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$text[$k] = self::toUTF8($v);
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}
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return $text;
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} elseif(is_string($text)) {
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$max = strlen($text);
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$buf = "";
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for($i = 0; $i < $max; $i++){
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$c1 = $text{$i};
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if($c1>="\xc0"){ //Should be converted to UTF8, if it's not UTF8 already
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$c2 = $i+1 >= $max? "\x00" : $text{$i+1};
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$c3 = $i+2 >= $max? "\x00" : $text{$i+2};
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$c4 = $i+3 >= $max? "\x00" : $text{$i+3};
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if($c1 >= "\xc0" & $c1 <= "\xdf"){ //looks like 2 bytes UTF8
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if($c2 >= "\x80" && $c2 <= "\xbf"){ //yeah, almost sure it's UTF8 already
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$buf .= $c1 . $c2;
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$i++;
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} else { //not valid UTF8. Convert it.
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$cc1 = (chr(ord($c1) / 64) | "\xc0");
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$cc2 = ($c1 & "\x3f") | "\x80";
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$buf .= $cc1 . $cc2;
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}
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} elseif($c1 >= "\xe0" & $c1 <= "\xef"){ //looks like 3 bytes UTF8
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if($c2 >= "\x80" && $c2 <= "\xbf" && $c3 >= "\x80" && $c3 <= "\xbf"){ //yeah, almost sure it's UTF8 already
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$buf .= $c1 . $c2 . $c3;
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$i = $i + 2;
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} else { //not valid UTF8. Convert it.
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$cc1 = (chr(ord($c1) / 64) | "\xc0");
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$cc2 = ($c1 & "\x3f") | "\x80";
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$buf .= $cc1 . $cc2;
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}
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} elseif($c1 >= "\xf0" & $c1 <= "\xf7"){ //looks like 4 bytes UTF8
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if($c2 >= "\x80" && $c2 <= "\xbf" && $c3 >= "\x80" && $c3 <= "\xbf" && $c4 >= "\x80" && $c4 <= "\xbf"){ //yeah, almost sure it's UTF8 already
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$buf .= $c1 . $c2 . $c3;
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$i = $i + 2;
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} else { //not valid UTF8. Convert it.
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$cc1 = (chr(ord($c1) / 64) | "\xc0");
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$cc2 = ($c1 & "\x3f") | "\x80";
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$buf .= $cc1 . $cc2;
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}
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} else { //doesn't look like UTF8, but should be converted
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$cc1 = (chr(ord($c1) / 64) | "\xc0");
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$cc2 = (($c1 & "\x3f") | "\x80");
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$buf .= $cc1 . $cc2;
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}
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} elseif(($c1 & "\xc0") == "\x80"){ // needs conversion
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if(isset(self::$win1252ToUtf8[ord($c1)])) { //found in Windows-1252 special cases
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$buf .= self::$win1252ToUtf8[ord($c1)];
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} else {
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$cc1 = (chr(ord($c1) / 64) | "\xc0");
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$cc2 = (($c1 & "\x3f") | "\x80");
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$buf .= $cc1 . $cc2;
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}
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} else { // it doesn't need convesion
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$buf .= $c1;
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}
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}
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return $buf;
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} else {
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return $text;
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}
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}
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static function toWin1252($text) {
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if(is_array($text)) {
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foreach($text as $k => $v) {
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$text[$k] = self::toWin1252($v);
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}
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return $text;
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} elseif(is_string($text)) {
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return utf8_decode(str_replace(array_keys(self::$utf8ToWin1252), array_values(self::$utf8ToWin1252), self::toUTF8($text)));
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} else {
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return $text;
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}
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}
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static function toISO8859($text) {
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return self::toWin1252($text);
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}
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static function toLatin1($text) {
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return self::toWin1252($text);
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}
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static function fixUTF8($text){
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if(is_array($text)) {
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foreach($text as $k => $v) {
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$text[$k] = self::fixUTF8($v);
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}
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return $text;
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}
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$last = "";
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while($last <> $text){
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$last = $text;
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$text = self::toUTF8(utf8_decode(str_replace(array_keys(self::$utf8ToWin1252), array_values(self::$utf8ToWin1252), $text)));
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}
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$text = self::toUTF8(utf8_decode(str_replace(array_keys(self::$utf8ToWin1252), array_values(self::$utf8ToWin1252), $text)));
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return $text;
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}
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static function UTF8FixWin1252Chars($text){
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// If you received an UTF-8 string that was converted from Windows-1252 as it was ISO8859-1
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// (ignoring Windows-1252 chars from 80 to 9F) use this function to fix it.
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// See: http://en.wikipedia.org/wiki/Windows-1252
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return str_replace(array_keys(self::$brokenUtf8ToUtf8), array_values(self::$brokenUtf8ToUtf8), $text);
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}
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static function removeBOM($str=""){
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if(substr($str, 0,3) == pack("CCC",0xef,0xbb,0xbf)) {
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$str=substr($str, 3);
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}
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return $str;
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}
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public static function normalizeEncoding($encodingLabel)
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{
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$encoding = strtoupper($encodingLabel);
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$enc = preg_replace('/[^a-zA-Z0-9\s]/', '', $encoding);
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$equivalences = array(
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'ISO88591' => 'ISO-8859-1',
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'ISO8859' => 'ISO-8859-1',
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'ISO' => 'ISO-8859-1',
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'LATIN1' => 'ISO-8859-1',
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'LATIN' => 'ISO-8859-1',
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'UTF8' => 'UTF-8',
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'UTF' => 'UTF-8',
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'WIN1252' => 'ISO-8859-1',
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'WINDOWS1252' => 'ISO-8859-1'
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);
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if(empty($equivalences[$encoding])){
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return 'UTF-8';
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}
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return $equivalences[$encoding];
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}
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public static function encode($encodingLabel, $text)
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{
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$encodingLabel = self::normalizeEncoding($encodingLabel);
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if($encodingLabel == 'UTF-8') return Encoding::toUTF8($text);
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if($encodingLabel == 'ISO-8859-1') return Encoding::toLatin1($text);
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}
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public static function cp1251ToUtf8($input)
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{
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return iconv('CP1251', 'UTF-8//TRANSLIT', $input);
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}
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}
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