mirror of
https://github.com/Dolibarr/dolibarr.git
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378 lines
11 KiB
PHP
378 lines
11 KiB
PHP
<?php
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/* Copyright (C) 2011-2012 Laurent Destailleur <eldy@users.sourceforge.net>
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* Copyright (C) 2011-2012 Regis Houssin <regis.houssin@capnetworks.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* or see http://www.gnu.org/
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*/
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/**
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* \file htdocs/core/lib/json.lib.php
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* \brief Functions to emulate json function for PHP < 5.3 compatibility
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* \ingroup core
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*/
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if (! function_exists('json_encode'))
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{
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/**
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* Implement json_encode for PHP that does not support it
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*
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* @param mixed $elements PHP Object to json encode
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* @return string Json encoded string
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*/
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function json_encode($elements)
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{
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return dol_json_encode($elements);
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}
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}
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/**
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* Implement json_encode for PHP that does not support it
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*
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* @param mixed $elements PHP Object to json encode
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* @return string Json encoded string
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* @see json_encode()
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*/
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function dol_json_encode($elements)
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{
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dol_syslog("For better performance, enable the native json in your PHP", LOG_WARNING);
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$num=0;
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if (is_object($elements)) // Count number of properties for an object
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{
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foreach($elements as $key => $value) $num++;
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}
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else
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{
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$num=count($elements);
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}
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//var_dump($num);
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// determine type
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if (is_numeric(key($elements)) && key($elements) == 0)
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{
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// indexed (list)
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$keysofelements=array_keys($elements); // Elements array mus have key that does not start with 0 and end with num-1, so we will use this later.
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$output = '[';
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for ($i = 0, $last = ($num - 1); $i < $num; $i++)
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{
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if (! isset($elements[$keysofelements[$i]])) continue;
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if (is_array($elements[$keysofelements[$i]]) || is_object($elements[$keysofelements[$i]])) $output.= json_encode($elements[$keysofelements[$i]]);
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else $output .= _val($elements[$keysofelements[$i]]);
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if ($i !== $last) $output.= ',';
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}
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$output.= ']';
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}
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else
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{
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// associative (object)
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$output = '{';
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$last = $num - 1;
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$i = 0;
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$tmpelements=array();
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if (is_array($elements)) $tmpelements=$elements;
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if (is_object($elements)) $tmpelements=get_object_vars($elements);
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foreach($tmpelements as $key => $value)
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{
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$output .= '"'.$key.'":';
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if (is_array($value)) $output.= json_encode($value);
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else $output .= _val($value);
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if ($i !== $last) $output.= ',';
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++$i;
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}
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$output.= '}';
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}
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// return
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return $output;
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}
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/**
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* Return text according to type
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*
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* @param mixed $val Value to show
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* @return string Formated value
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*/
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function _val($val)
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{
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if (is_string($val))
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{
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// STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
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$ascii = '';
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$strlen_var = strlen($val);
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/*
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* Iterate over every character in the string,
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* escaping with a slash or encoding to UTF-8 where necessary
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*/
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for ($c = 0; $c < $strlen_var; ++$c) {
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$ord_var_c = ord($val[$c]);
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switch (true) {
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case $ord_var_c == 0x08:
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$ascii .= '\b';
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break;
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case $ord_var_c == 0x09:
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$ascii .= '\t';
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break;
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case $ord_var_c == 0x0A:
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$ascii .= '\n';
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break;
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case $ord_var_c == 0x0C:
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$ascii .= '\f';
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break;
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case $ord_var_c == 0x0D:
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$ascii .= '\r';
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break;
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case $ord_var_c == 0x22:
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case $ord_var_c == 0x2F:
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case $ord_var_c == 0x5C:
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// double quote, slash, slosh
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$ascii .= '\\'.$val[$c];
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break;
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case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
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// characters U-00000000 - U-0000007F (same as ASCII)
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$ascii .= $val{$c};
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break;
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case (($ord_var_c & 0xE0) == 0xC0):
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// characters U-00000080 - U-000007FF, mask 110XXXXX
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$char = pack('C*', $ord_var_c, ord($val{$c + 1}));
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$c += 1;
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$utf16 = utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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case (($ord_var_c & 0xF0) == 0xE0):
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// characters U-00000800 - U-0000FFFF, mask 1110XXXX
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$char = pack('C*', $ord_var_c, ord($val{$c + 1}), ord($val{$c + 2}));
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$c += 2;
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$utf16 = utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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case (($ord_var_c & 0xF8) == 0xF0):
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// characters U-00010000 - U-001FFFFF, mask 11110XXX
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$char = pack('C*', $ord_var_c, ord($val{$c + 1}), ord($val{$c + 2}), ord($val{$c + 3}));
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$c += 3;
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$utf16 = utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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case (($ord_var_c & 0xFC) == 0xF8):
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// characters U-00200000 - U-03FFFFFF, mask 111110XX
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$char = pack('C*', $ord_var_c, ord($val{$c + 1}), ord($val{$c + 2}), ord($val{$c + 3}), ord($val{$c + 4}));
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$c += 4;
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$utf16 = utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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case (($ord_var_c & 0xFE) == 0xFC):
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// characters U-04000000 - U-7FFFFFFF, mask 1111110X
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$char = pack('C*', $ord_var_c, ord($val{$c + 1}), ord($val{$c + 2}), ord($val{$c + 3}), ord($val{$c + 4}), ord($val{$c + 5}));
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$c += 5;
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$utf16 = utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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}
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}
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return '"'.$ascii.'"';
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}
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elseif (is_int($val)) return sprintf('%d', $val);
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elseif (is_float($val)) return sprintf('%F', $val);
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elseif (is_bool($val)) return ($val ? 'true' : 'false');
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else return 'null';
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}
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if (! function_exists('json_decode'))
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{
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/**
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* Implement json_decode for PHP that does not support it
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*
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* @param string $json Json encoded to PHP Object or Array
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* @param bool $assoc False return an object, true return an array
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* @return mixed Object or Array
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*/
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function json_decode($json, $assoc=false)
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{
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return dol_json_decode($json, $assoc);
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}
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}
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/**
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* Implement json_decode for PHP that does not support it
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*
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* @param string $json Json encoded to PHP Object or Array
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* @param bool $assoc False return an object, true return an array. Try to always use it with true !
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* @return mixed Object or Array or false on error
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* @see json_decode()
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*/
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function dol_json_decode($json, $assoc=false)
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{
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dol_syslog("For better performance, enable the native json in your PHP", LOG_WARNING);
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$comment = false;
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$out='';
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$strLength = strlen($json); // Must stay strlen and not dol_strlen because we want technical length, not visible length
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for ($i=0; $i<$strLength; $i++)
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{
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if (! $comment)
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{
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if (($json[$i] == '{') || ($json[$i] == '[')) $out.= 'array(';
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else if (($json[$i] == '}') || ($json[$i] == ']')) $out.= ')';
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else if ($json[$i] == ':') $out.= ' => ';
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else $out.=$json[$i];
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}
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else $out.= $json[$i];
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if ($json[$i] == '"' && $json[($i-1)]!="\\") $comment = !$comment;
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}
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$out=_unval($out);
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// Return an array
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if ($out != '') eval('$array = '.$out.';');
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else $array=array();
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// Return an object
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if (! $assoc)
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{
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if (! empty($array))
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{
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$object = false;
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if (count($array)>0) {
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$object = (object) array();
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}
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foreach ($array as $key => $value)
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{
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if ($key) $object->{$key} = $value;
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}
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return $object;
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}
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return false;
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}
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return $array;
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}
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/**
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* Return text according to type
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*
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* @param string $val Value to decode
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* @return string Formated value
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*/
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function _unval($val)
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{
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while (preg_match('/\\\u([0-9A-F]{2})([0-9A-F]{2})/i', $val, $reg))
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{
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// single, escaped unicode character
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$utf16 = chr(hexdec($reg[1])) . chr(hexdec($reg[2]));
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$utf8 = utf162utf8($utf16);
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$val=preg_replace('/\\\u'.$reg[1].$reg[2].'/i',$utf8,$val);
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}
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return $val;
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}
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/**
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* Convert a string from one UTF-16 char to one UTF-8 char
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*
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* Normally should be handled by mb_convert_encoding, but
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* provides a slower PHP-only method for installations
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* that lack the multibye string extension.
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*
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* @param string $utf16 UTF-16 character
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* @return string UTF-8 character
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*/
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function utf162utf8($utf16)
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{
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// oh please oh please oh please oh please oh please
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if(function_exists('mb_convert_encoding')) {
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return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
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}
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$bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
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switch(true) {
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case ((0x7F & $bytes) == $bytes):
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// this case should never be reached, because we are in ASCII range
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return chr($bytes);
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case (0x07FF & $bytes) == $bytes:
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// return a 2-byte UTF-8 character
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return chr(0xC0 | (($bytes >> 6) & 0x1F))
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. chr(0x80 | ($bytes & 0x3F));
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case (0xFFFF & $bytes) == $bytes:
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// return a 3-byte UTF-8 character
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return chr(0xE0 | (($bytes >> 12) & 0x0F))
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. chr(0x80 | (($bytes >> 6) & 0x3F))
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. chr(0x80 | ($bytes & 0x3F));
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}
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// ignoring UTF-32 for now, sorry
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return '';
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}
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/**
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* Convert a string from one UTF-8 char to one UTF-16 char
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*
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* Normally should be handled by mb_convert_encoding, but
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* provides a slower PHP-only method for installations
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* that lack the multibye string extension.
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*
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* @param string $utf8 UTF-8 character
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* @return string UTF-16 character
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*/
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function utf82utf16($utf8)
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{
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// oh please oh please oh please oh please oh please
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if(function_exists('mb_convert_encoding')) {
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return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
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}
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switch(strlen($utf8)) {
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case 1:
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// this case should never be reached, because we are in ASCII range
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return $utf8;
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case 2:
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// return a UTF-16 character from a 2-byte UTF-8 char
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return chr(0x07 & (ord($utf8{0}) >> 2)) . chr((0xC0 & (ord($utf8{0}) << 6)) | (0x3F & ord($utf8{1})));
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case 3:
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// return a UTF-16 character from a 3-byte UTF-8 char
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return chr((0xF0 & (ord($utf8{0}) << 4)) | (0x0F & (ord($utf8{1}) >> 2))) . chr((0xC0 & (ord($utf8{1}) << 6)) | (0x7F & ord($utf8{2})));
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}
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// ignoring UTF-32 for now, sorry
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return '';
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}
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