Skip to the content.

Gyro-PHP > Documentation

• Home
• Downloads
• Tutorials
• Showcases
• Documentation
• Report Bug

contributions/text.unidecode/lib/helpers/converters/unidecode.converter.php

Go to the documentation of this file.

<?php
/**
 * ASCII transliterations of unicode text
 * 
 * @author Gerd Riesselmann
 * @ingroup Unidecode
 */
class ConverterUnidecode implements IConverter {
        private static $groups = array();
        
        /**
         * Convert Unicode chars to ASCII transliterals
         * 
         * @param string $value
         * @param string Encoding of $value, if different from current GyroLocale
         */
        public function encode($value, $params = false) {
                // We need 
                if (empty($params)) {
                        $params = GyroLocale::get_charset();
                }
                $value = String::convert($value, $params, 'UTF-16');
                $value = $this->unidecode($value);
                        
                return $value;
        }
        
        /**
         * Using "ConverterUnidecode::encode() may be confusing, so let decode8) just do the same
         */
        public function decode($value, $params = false) {
                return $this->encode($value, $params);          
        }       
        
        /**
         * Unidecode given string (already Unicode)
         */
        protected function unidecode($value) {
                $ret = '';
                foreach(unpack('n*', $value) as $uchar) {
                        $ret .= $this->unidecode_uchar($uchar);
                }
                return $ret;    
        }
        
        /**
         * Decode a given unicde chat (two byte long)
         */
        protected function unidecode_uchar($uchar) {
                if ($uchar <= 0x007f) {
                        return chr($uchar);
                }
                
                $high = $uchar >> 8;
                $low = $uchar & 0x00ff;
                
                // Did we resolve the group already?
                $group = Arr::get_item(self::$groups, $high, false);
                if ($group === false) {
                        // No, try to load it...
                        $hex = substr('00' . dechex($high), -2); 
                        $file = dirname(__FILE__) . '/data/x' . $hex . '.php';
                        if (file_exists($file)) {
                                include($file);
                                $group = $data;
                        } 
                        else {
                                // No such group, fill with empty
                                $group = array_fill(0, 0x100, '');
                        }
                        self::$groups[$high] = $group;
                }
                
                return Arr::get_item($group, $low, '');         
        }
        
} 

Imprint