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120 lines
3.9 KiB
120 lines
3.9 KiB
<?php
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// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
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//
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// All Rights Reserved. See copyright.txt for details and a complete list of authors.
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// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
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// $Id$
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class Encoding
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{
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public $_inputSupportedEncodings = ['ISO-8859-1','ISO-8859-15','UTF-8'];
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public $_ouputSupportedEncodings = ['ISO-8859-1','ISO-8859-15','UTF-8',];
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public $_supportedEncodings = 'UTF-8,ISO-8859-1,ISO-8859-15';
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// Class constructor
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public function __construct($inputEncoding = 'ISO-8859-1', $outputEncoding = 'UTF-8')
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{
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// Check if mb_convert_encoding is installed
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if (function_exists('mb_convert_encoding') && $this->set_input_encoding($inputEncoding) && $this->set_output_encoding($outputEncoding)) {
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return true;
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} else {
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return false;
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}
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}
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// Set default input encoding, return false if fails loading encoding
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public function set_input_encoding($encoding)
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{
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$this->_input_encoding = $encoding;
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return true;
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}
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// Set default output encoding, return false if fails loading encoding
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public function set_output_encoding($encoding)
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{
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$this->_output_encoding = $encoding;
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return true;
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}
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// Get default input encoding
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public function get_input_encoding()
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{
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return $this->_input_encoding;
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}
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// Get default output encoding
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public function get_output_encoding()
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{
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return $this->_output_encoding;
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}
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// Return encoding of a string
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public function detect_encoding($str)
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{
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return mb_detect_encoding($str, $this->_supportedEncodings);
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}
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// Convert string to another encoding, return false on failure
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public function convert_encoding($str, $inputEncoding = null, $outputEncoding = null)
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{
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if ($inputEncoding == null || $inputEncoding == '') {
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if ($this->get_input_encoding() == '') {
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$this->set_input_encoding($this->detect_encoding($str));
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}
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$inputEncoding = $this->get_input_encoding();
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}
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if ($outputEncoding == null || $inputEncoding == '') {
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if ($this->get_output_encoding() == '') {
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$this->set_output_encoding($this->detect_encoding($str));
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}
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$outputEncoding = $this->get_output_encoding();
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}
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// $returnStr = mb_convert_encoding ($str, $outputEncoding, $inputEncoding);
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$returnStr = iconv($inputEncoding, $outputEncoding . "//TRANSLIT", $str);
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// print $outputEncoding.' - '.$inputEncoding.' - '.$returnStr.'<br>';
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return $returnStr;
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}
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// Returns true if $string is valid UTF-8 and false otherwise.
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public function is_utf8($str)
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{
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// From http://w3.org/International/questions/qa-forms-utf-8.html
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return preg_match(
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'%^(?:
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[\x09\x0A\x0D\x20-\x7E] # ASCII
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| [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
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| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
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| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
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| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
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| \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
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| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
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| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
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)*$%xs',
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$str
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);
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}
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// Return array of supported input encodings
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public function get_input_supported_encodings()
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{
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return $this->_inputSupportedEncodings;
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}
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// Return array of supported output encodings
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public function get_output_supported_encodings()
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{
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return $this->_outputSupportedEncodings;
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}
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// Return array of supported encodings
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public function get_supported_encodings()
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{
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return $this->_supportedEncodings;
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}
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}
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