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/library/paypal/json.php

https://github.com/alugo/Goteo
PHP | 905 lines | 491 code | 120 blank | 294 comment | 106 complexity | 94364b39237c395577f25b409813e188 MD5 | raw file
  1<?php
  2/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
  3/**
  4 * Converts to and from JSON format.
  5 *
  6 * JSON (JavaScript Object Notation) is a lightweight data-interchange
  7 * format. It is easy for humans to read and write. It is easy for machines
  8 * to parse and generate. It is based on a subset of the JavaScript
  9 * Programming Language, Standard ECMA-262 3rd Edition - December 1999.
 10 * This feature can also be found in  Python. JSON is a text format that is
 11 * completely language independent but uses conventions that are familiar
 12 * to programmers of the C-family of languages, including C, C++, C#, Java,
 13 * JavaScript, Perl, TCL, and many others. These properties make JSON an
 14 * ideal data-interchange language.
 15 *
 16 * This package provides a simple encoder and decoder for JSON notation. It
 17 * is intended for use with client-side Javascript applications that make
 18 * use of HTTPRequest to perform server communication functions - data can
 19 * be encoded into JSON notation for use in a client-side javascript, or
 20 * decoded from incoming Javascript requests. JSON format is native to
 21 * Javascript, and can be directly eval()'ed with no further parsing
 22 * overhead
 23 *
 24 * All strings should be in ASCII or UTF-8 format!
 25 *
 26 * LICENSE: Redistribution and use in source and binary forms, with or
 27 * without modification, are permitted provided that the following
 28 * conditions are met: Redistributions of source code must retain the
 29 * above copyright notice, this list of conditions and the following
 30 * disclaimer. Redistributions in binary form must reproduce the above
 31 * copyright notice, this list of conditions and the following disclaimer
 32 * in the documentation and/or other materials provided with the
 33 * distribution.
 34 *
 35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 37 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
 38 * NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 39 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 40 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 41 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 42 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 43 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 44 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 45 * DAMAGE.
 46 *
 47 * @category
 48 * @package     Services_JSON
 49 * @author      Michal Migurski <mike-json@teczno.com>
 50 * @author      Matt Knapp <mdknapp[at]gmail[dot]com>
 51 * @author      Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
 52 * @copyright   2005 Michal Migurski
 53 * @version     CVS: $Id: JSON.php 288200 2009-09-09 15:41:29Z alan_k $
 54 * @license     http://www.opensource.org/licenses/bsd-license.php
 55 * @link        http://pear.php.net/pepr/pepr-proposal-show.php?id=198
 56 */
 57
 58/**
 59 * Marker constant for Services_JSON::decode(), used to flag stack state
 60 */
 61define('SERVICES_JSON_SLICE',   1);
 62
 63/**
 64 * Marker constant for Services_JSON::decode(), used to flag stack state
 65 */
 66define('SERVICES_JSON_IN_STR',  2);
 67
 68/**
 69 * Marker constant for Services_JSON::decode(), used to flag stack state
 70 */
 71define('SERVICES_JSON_IN_ARR',  3);
 72
 73/**
 74 * Marker constant for Services_JSON::decode(), used to flag stack state
 75 */
 76define('SERVICES_JSON_IN_OBJ',  4);
 77
 78/**
 79 * Marker constant for Services_JSON::decode(), used to flag stack state
 80 */
 81define('SERVICES_JSON_IN_CMT', 5);
 82
 83/**
 84 * Behavior switch for Services_JSON::decode()
 85 */
 86define('SERVICES_JSON_LOOSE_TYPE', 16);
 87
 88/**
 89 * Behavior switch for Services_JSON::decode()
 90 */
 91define('SERVICES_JSON_SUPPRESS_ERRORS', 32);
 92
 93/**
 94 * Converts to and from JSON format.
 95 *
 96 * Brief example of use:
 97 *
 98 * <code>
 99 * // create a new instance of Services_JSON
100 * $json = new Services_JSON();
101 *
102 * // convert a complexe value to JSON notation, and send it to the browser
103 * $value = array('foo', 'bar', array(1, 2, 'baz'), array(3, array(4)));
104 * $output = $json->encode($value);
105 *
106 * print($output);
107 * // prints: ["foo","bar",[1,2,"baz"],[3,[4]]]
108 *
109 * // accept incoming POST data, assumed to be in JSON notation
110 * $input = file_get_contents('php://input', 1000000);
111 * $value = $json->decode($input);
112 * </code>
113 */
114class Services_JSON
115{
116   /**
117    * constructs a new JSON instance
118    *
119    * @param    int     $use    object behavior flags; combine with boolean-OR
120    *
121    *                           possible values:
122    *                           - SERVICES_JSON_LOOSE_TYPE:  loose typing.
123    *                                   "{...}" syntax creates associative arrays
124    *                                   instead of objects in decode().
125    *                           - SERVICES_JSON_SUPPRESS_ERRORS:  error suppression.
126    *                                   Values which can't be encoded (e.g. resources)
127    *                                   appear as NULL instead of throwing errors.
128    *                                   By default, a deeply-nested resource will
129    *                                   bubble up with an error, so all return values
130    *                                   from encode() should be checked with isError()
131    */
132    function Services_JSON($use = 0)
133    {
134        $this->use = $use;
135    }
136
137   /**
138    * convert a string from one UTF-16 char to one UTF-8 char
139    *
140    * Normally should be handled by mb_convert_encoding, but
141    * provides a slower PHP-only method for installations
142    * that lack the multibye string extension.
143    *
144    * @param    string  $utf16  UTF-16 character
145    * @return   string  UTF-8 character
146    * @access   private
147    */
148    function utf162utf8($utf16)
149    {
150        // oh please oh please oh please oh please oh please
151        if(function_exists('mb_convert_encoding')) {
152            return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
153        }
154
155        $bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
156
157        switch(true) {
158            case ((0x7F & $bytes) == $bytes):
159                // this case should never be reached, because we are in ASCII range
160                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
161                return chr(0x7F & $bytes);
162
163            case (0x07FF & $bytes) == $bytes:
164                // return a 2-byte UTF-8 character
165                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
166                return chr(0xC0 | (($bytes >> 6) & 0x1F))
167                     . chr(0x80 | ($bytes & 0x3F));
168
169            case (0xFFFF & $bytes) == $bytes:
170                // return a 3-byte UTF-8 character
171                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
172                return chr(0xE0 | (($bytes >> 12) & 0x0F))
173                     . chr(0x80 | (($bytes >> 6) & 0x3F))
174                     . chr(0x80 | ($bytes & 0x3F));
175        }
176
177        // ignoring UTF-32 for now, sorry
178        return '';
179    }
180
181   /**
182    * convert a string from one UTF-8 char to one UTF-16 char
183    *
184    * Normally should be handled by mb_convert_encoding, but
185    * provides a slower PHP-only method for installations
186    * that lack the multibye string extension.
187    *
188    * @param    string  $utf8   UTF-8 character
189    * @return   string  UTF-16 character
190    * @access   private
191    */
192    function utf82utf16($utf8)
193    {
194        // oh please oh please oh please oh please oh please
195        if(function_exists('mb_convert_encoding')) {
196            return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
197        }
198
199        switch(strlen($utf8)) {
200            case 1:
201                // this case should never be reached, because we are in ASCII range
202                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
203                return $utf8;
204
205            case 2:
206                // return a UTF-16 character from a 2-byte UTF-8 char
207                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
208                return chr(0x07 & (ord($utf8{0}) >> 2))
209                     . chr((0xC0 & (ord($utf8{0}) << 6))
210                         | (0x3F & ord($utf8{1})));
211
212            case 3:
213                // return a UTF-16 character from a 3-byte UTF-8 char
214                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
215                return chr((0xF0 & (ord($utf8{0}) << 4))
216                         | (0x0F & (ord($utf8{1}) >> 2)))
217                     . chr((0xC0 & (ord($utf8{1}) << 6))
218                         | (0x7F & ord($utf8{2})));
219        }
220
221        // ignoring UTF-32 for now, sorry
222        return '';
223    }
224
225   /**
226    * encodes an arbitrary variable into JSON format (and sends JSON Header)
227    *
228    * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
229    *                           see argument 1 to Services_JSON() above for array-parsing behavior.
230    *                           if var is a strng, note that encode() always expects it
231    *                           to be in ASCII or UTF-8 format!
232    *
233    * @return   mixed   JSON string representation of input var or an error if a problem occurs
234    * @access   public
235    */
236    function encode($var)
237    {
238        //header('Content-type: application/json');
239        return $this->_encode($var);
240    }
241    /**
242    * encodes an arbitrary variable into JSON format without JSON Header - warning - may allow CSS!!!!)
243    *
244    * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
245    *                           see argument 1 to Services_JSON() above for array-parsing behavior.
246    *                           if var is a strng, note that encode() always expects it
247    *                           to be in ASCII or UTF-8 format!
248    *
249    * @return   mixed   JSON string representation of input var or an error if a problem occurs
250    * @access   public
251    */
252    function encodeUnsafe($var)
253    {
254        return $this->_encode($var);
255    }
256    /**
257    * PRIVATE CODE that does the work of encodes an arbitrary variable into JSON format 
258    *
259    * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
260    *                           see argument 1 to Services_JSON() above for array-parsing behavior.
261    *                           if var is a strng, note that encode() always expects it
262    *                           to be in ASCII or UTF-8 format!
263    *
264    * @return   mixed   JSON string representation of input var or an error if a problem occurs
265    * @access   public
266    */
267    function _encode($var) 
268    {
269         
270        switch (gettype($var)) {
271            case 'boolean':
272                return $var ? 'true' : 'false';
273
274            case 'NULL':
275                return 'null';
276
277            case 'integer':
278                return (int) $var;
279
280            case 'double':
281            case 'float':
282                return (float) $var;
283
284            case 'string':
285                // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
286                $ascii = '';
287                $strlen_var = strlen($var);
288
289               /*
290                * Iterate over every character in the string,
291                * escaping with a slash or encoding to UTF-8 where necessary
292                */
293                for ($c = 0; $c < $strlen_var; ++$c) {
294
295                    $ord_var_c = ord($var{$c});
296
297                    switch (true) {
298                        case $ord_var_c == 0x08:
299                            $ascii .= '\b';
300                            break;
301                        case $ord_var_c == 0x09:
302                            $ascii .= '\t';
303                            break;
304                        case $ord_var_c == 0x0A:
305                            $ascii .= '\n';
306                            break;
307                        case $ord_var_c == 0x0C:
308                            $ascii .= '\f';
309                            break;
310                        case $ord_var_c == 0x0D:
311                            $ascii .= '\r';
312                            break;
313
314                        case $ord_var_c == 0x22:
315                        case $ord_var_c == 0x2F:
316                        case $ord_var_c == 0x5C:
317                            // double quote, slash, slosh
318                            $ascii .= '\\'.$var{$c};
319                            break;
320
321                        case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
322                            // characters U-00000000 - U-0000007F (same as ASCII)
323                            $ascii .= $var{$c};
324                            break;
325
326                        case (($ord_var_c & 0xE0) == 0xC0):
327                            // characters U-00000080 - U-000007FF, mask 110XXXXX
328                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
329                            if ($c+1 >= $strlen_var) {
330                                $c += 1;
331                                $ascii .= '?';
332                                break;
333                            }
334                            
335                            $char = pack('C*', $ord_var_c, ord($var{$c + 1}));
336                            $c += 1;
337                            $utf16 = $this->utf82utf16($char);
338                            $ascii .= sprintf('\u%04s', bin2hex($utf16));
339                            break;
340
341                        case (($ord_var_c & 0xF0) == 0xE0):
342                            if ($c+2 >= $strlen_var) {
343                                $c += 2;
344                                $ascii .= '?';
345                                break;
346                            }
347                            // characters U-00000800 - U-0000FFFF, mask 1110XXXX
348                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
349                            $char = pack('C*', $ord_var_c,
350                                         @ord($var{$c + 1}),
351                                         @ord($var{$c + 2}));
352                            $c += 2;
353                            $utf16 = $this->utf82utf16($char);
354                            $ascii .= sprintf('\u%04s', bin2hex($utf16));
355                            break;
356
357                        case (($ord_var_c & 0xF8) == 0xF0):
358                            if ($c+3 >= $strlen_var) {
359                                $c += 3;
360                                $ascii .= '?';
361                                break;
362                            }
363                            // characters U-00010000 - U-001FFFFF, mask 11110XXX
364                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
365                            $char = pack('C*', $ord_var_c,
366                                         ord($var{$c + 1}),
367                                         ord($var{$c + 2}),
368                                         ord($var{$c + 3}));
369                            $c += 3;
370                            $utf16 = $this->utf82utf16($char);
371                            $ascii .= sprintf('\u%04s', bin2hex($utf16));
372                            break;
373
374                        case (($ord_var_c & 0xFC) == 0xF8):
375                            // characters U-00200000 - U-03FFFFFF, mask 111110XX
376                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
377                            if ($c+4 >= $strlen_var) {
378                                $c += 4;
379                                $ascii .= '?';
380                                break;
381                            }
382                            $char = pack('C*', $ord_var_c,
383                                         ord($var{$c + 1}),
384                                         ord($var{$c + 2}),
385                                         ord($var{$c + 3}),
386                                         ord($var{$c + 4}));
387                            $c += 4;
388                            $utf16 = $this->utf82utf16($char);
389                            $ascii .= sprintf('\u%04s', bin2hex($utf16));
390                            break;
391
392                        case (($ord_var_c & 0xFE) == 0xFC):
393                        if ($c+5 >= $strlen_var) {
394                                $c += 5;
395                                $ascii .= '?';
396                                break;
397                            }
398                            // characters U-04000000 - U-7FFFFFFF, mask 1111110X
399                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
400                            $char = pack('C*', $ord_var_c,
401                                         ord($var{$c + 1}),
402                                         ord($var{$c + 2}),
403                                         ord($var{$c + 3}),
404                                         ord($var{$c + 4}),
405                                         ord($var{$c + 5}));
406                            $c += 5;
407                            $utf16 = $this->utf82utf16($char);
408                            $ascii .= sprintf('\u%04s', bin2hex($utf16));
409                            break;
410                    }
411                }
412                return  '"'.$ascii.'"';
413
414            case 'array':
415               /*
416                * As per JSON spec if any array key is not an integer
417                * we must treat the the whole array as an object. We
418                * also try to catch a sparsely populated associative
419                * array with numeric keys here because some JS engines
420                * will create an array with empty indexes up to
421                * max_index which can cause memory issues and because
422                * the keys, which may be relevant, will be remapped
423                * otherwise.
424                *
425                * As per the ECMA and JSON specification an object may
426                * have any string as a property. Unfortunately due to
427                * a hole in the ECMA specification if the key is a
428                * ECMA reserved word or starts with a digit the
429                * parameter is only accessible using ECMAScript's
430                * bracket notation.
431                */
432
433                // treat as a JSON object
434                if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
435                    $properties = array_map(array($this, 'name_value'),
436                                            array_keys($var),
437                                            array_values($var));
438
439                    foreach($properties as $key => $property) {
440                        if(Services_JSON::isError($property)) {
441                            return $property;
442                        }
443                        
444                    }
445
446                    return '{' . join(',', $properties) . '}';
447                }
448				
449                //Changes for PayPal SDK - starts
450                $objectName = get_class($var[0]);
451                //Changes for PayPal SDK - Ends
452                
453                // treat it like a regular array
454                $elements = array_map(array($this, '_encode'), $var);
455
456                foreach($elements as $key => $element) {
457                    if(Services_JSON::isError($element)) {
458                        return $element;
459                    }
460                    //Changes for PayPal SDK - starts
461                    if(!empty($objectName) and trim($objectName) != '') {
462                    	$elements[$key] = '"'. $objectName .'":'.$element ;	
463                    }else {
464                    	$element = substr($element, 1, strlen($element) -2);
465                    	$elements[$key] = $element;
466                    }
467                    
468                    //Changes for PayPal SDK - Ends
469                }
470				
471                //Changes for PayPal SDK - starts
472                
473                return '{' . join(',', $elements) . '}';
474                //return join(',', $elements);
475                //Changes for PayPal SDK - Ends
476
477            case 'object':
478                $vars = get_object_vars($var);
479				$properties = array_map(array($this, 'name_value'),
480                                        array_keys($vars),
481                                        array_values($vars));
482
483                foreach($properties as $key => $property) {
484                    if(Services_JSON::isError($property)) {
485                        return $property;
486                    }
487                    //Changes for PayPal SDK - starts
488                    if(empty($property) || $property == null) {
489                    	unset($properties[$key]);
490                    }
491                    //Changes for PayPal SDK - Ends
492                }
493
494                return '{' . join(',', $properties) . '}';
495               
496            default:
497                return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
498                    ? 'null'
499                    : new Services_JSON_Error(gettype($var)." can not be encoded as JSON string");
500        }
501    }
502
503   /**
504    * array-walking function for use in generating JSON-formatted name-value pairs
505    *
506    * @param    string  $name   name of key to use
507    * @param    mixed   $value  reference to an array element to be encoded
508    *
509    * @return   string  JSON-formatted name-value pair, like '"name":value'
510    * @access   private
511    */
512    function name_value($name, $value)
513    {
514    	//Changes for PayPal SDK
515    	if(!(empty($value) || $value == null)) {
516	        $encoded_value = $this->_encode($value);
517	
518	        if(Services_JSON::isError($encoded_value)) {
519	            return $encoded_value;
520	        }
521	
522	        return $this->_encode(strval($name)) . ':' . $encoded_value;
523    	}
524    }
525
526   /**
527    * reduce a string by removing leading and trailing comments and whitespace
528    *
529    * @param    $str    string      string value to strip of comments and whitespace
530    *
531    * @return   string  string value stripped of comments and whitespace
532    * @access   private
533    */
534    function reduce_string($str)
535    {
536        $str = preg_replace(array(
537
538                // eliminate single line comments in '// ...' form
539                '#^\s*//(.+)$#m',
540
541                // eliminate multi-line comments in '/* ... */' form, at start of string
542                '#^\s*/\*(.+)\*/#Us',
543
544                // eliminate multi-line comments in '/* ... */' form, at end of string
545                '#/\*(.+)\*/\s*$#Us'
546
547            ), '', $str);
548
549        // eliminate extraneous space
550        return trim($str);
551    }
552
553   /**
554    * decodes a JSON string into appropriate variable
555    *
556    * @param    string  $str    JSON-formatted string
557    *
558    * @return   mixed   number, boolean, string, array, or object
559    *                   corresponding to given JSON input string.
560    *                   See argument 1 to Services_JSON() above for object-output behavior.
561    *                   Note that decode() always returns strings
562    *                   in ASCII or UTF-8 format!
563    * @access   public
564    */
565    function decode($str, $objName = '')
566    {
567        $str = $this->reduce_string($str);
568
569        switch (strtolower($str)) {
570            case 'true':
571                return true;
572
573            case 'false':
574                return false;
575
576            case 'null':
577                return null;
578
579            default:
580                $m = array();
581
582                if (is_numeric($str)) {
583                    // Lookie-loo, it's a number
584
585                    // This would work on its own, but I'm trying to be
586                    // good about returning integers where appropriate:
587                    // return (float)$str;
588
589                    // Return float or int, as appropriate
590                    return ((float)$str == (integer)$str)
591                        ? (integer)$str
592                        : (float)$str;
593
594                } elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
595                    // STRINGS RETURNED IN UTF-8 FORMAT
596                    $delim = substr($str, 0, 1);
597                    $chrs = substr($str, 1, -1);
598                    $utf8 = '';
599                    $strlen_chrs = strlen($chrs);
600
601                    for ($c = 0; $c < $strlen_chrs; ++$c) {
602
603                        $substr_chrs_c_2 = substr($chrs, $c, 2);
604                        $ord_chrs_c = ord($chrs{$c});
605
606                        switch (true) {
607                            case $substr_chrs_c_2 == '\b':
608                                $utf8 .= chr(0x08);
609                                ++$c;
610                                break;
611                            case $substr_chrs_c_2 == '\t':
612                                $utf8 .= chr(0x09);
613                                ++$c;
614                                break;
615                            case $substr_chrs_c_2 == '\n':
616                                $utf8 .= chr(0x0A);
617                                ++$c;
618                                break;
619                            case $substr_chrs_c_2 == '\f':
620                                $utf8 .= chr(0x0C);
621                                ++$c;
622                                break;
623                            case $substr_chrs_c_2 == '\r':
624                                $utf8 .= chr(0x0D);
625                                ++$c;
626                                break;
627
628                            case $substr_chrs_c_2 == '\\"':
629                            case $substr_chrs_c_2 == '\\\'':
630                            case $substr_chrs_c_2 == '\\\\':
631                            case $substr_chrs_c_2 == '\\/':
632                                if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
633                                   ($delim == "'" && $substr_chrs_c_2 != '\\"')) {
634                                    $utf8 .= $chrs{++$c};
635                                }
636                                break;
637
638                            case preg_match('/\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
639                                // single, escaped unicode character
640                                $utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
641                                       . chr(hexdec(substr($chrs, ($c + 4), 2)));
642                                $utf8 .= $this->utf162utf8($utf16);
643                                $c += 5;
644                                break;
645
646                            case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
647                                $utf8 .= $chrs{$c};
648                                break;
649
650                            case ($ord_chrs_c & 0xE0) == 0xC0:
651                                // characters U-00000080 - U-000007FF, mask 110XXXXX
652                                //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
653                                $utf8 .= substr($chrs, $c, 2);
654                                ++$c;
655                                break;
656
657                            case ($ord_chrs_c & 0xF0) == 0xE0:
658                                // characters U-00000800 - U-0000FFFF, mask 1110XXXX
659                                // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
660                                $utf8 .= substr($chrs, $c, 3);
661                                $c += 2;
662                                break;
663
664                            case ($ord_chrs_c & 0xF8) == 0xF0:
665                                // characters U-00010000 - U-001FFFFF, mask 11110XXX
666                                // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
667                                $utf8 .= substr($chrs, $c, 4);
668                                $c += 3;
669                                break;
670
671                            case ($ord_chrs_c & 0xFC) == 0xF8:
672                                // characters U-00200000 - U-03FFFFFF, mask 111110XX
673                                // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
674                                $utf8 .= substr($chrs, $c, 5);
675                                $c += 4;
676                                break;
677
678                            case ($ord_chrs_c & 0xFE) == 0xFC:
679                                // characters U-04000000 - U-7FFFFFFF, mask 1111110X
680                                // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
681                                $utf8 .= substr($chrs, $c, 6);
682                                $c += 5;
683                                break;
684
685                        }
686
687                    }
688
689                    return $utf8;
690
691                } elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
692                    // array, or object notation
693
694                    if ($str{0} == '[') {
695                        $stk = array(SERVICES_JSON_IN_ARR);
696                        $arr = array();
697                    } else {
698                        if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
699                            $stk = array(SERVICES_JSON_IN_OBJ);
700                            $obj = array();
701                        } else {
702                            $stk = array(SERVICES_JSON_IN_OBJ);
703                        	
704                            //Changes for PayPal SDK - starts
705                            if(class_exists($objName)) {
706                            $obj = new ReflectionClass($objName);
707                               	$obj = $obj->newInstance();	
708                            }else {
709                               	$obj = new stdClass();
710                            }
711                            //$obj = new stdClass();	
712                            //Changes for PayPal SDK - ends
713                            
714                        }
715                    }
716
717                    array_push($stk, array('what'  => SERVICES_JSON_SLICE,
718                                           'where' => 0,
719                                           'delim' => false));
720
721                    $chrs = substr($str, 1, -1);
722                    $chrs = $this->reduce_string($chrs);
723
724                    if ($chrs == '') {
725                        if (reset($stk) == SERVICES_JSON_IN_ARR) {
726                            return $arr;
727
728                        } else {
729                            return $obj;
730
731                        }
732                    }
733
734                    //print("\nparsing {$chrs}\n");
735
736                    $strlen_chrs = strlen($chrs);
737
738                    for ($c = 0; $c <= $strlen_chrs; ++$c) {
739
740                        $top = end($stk);
741                        $substr_chrs_c_2 = substr($chrs, $c, 2);
742
743                        if (($c == $strlen_chrs) || (($chrs{$c} == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
744                            // found a comma that is not inside a string, array, etc.,
745                            // OR we've reached the end of the character list
746                            $slice = substr($chrs, $top['where'], ($c - $top['where']));
747                            array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
748                            //print("Found split at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
749
750                            if (reset($stk) == SERVICES_JSON_IN_ARR) {
751                                // we are in an array, so just push an element onto the stack
752                                array_push($arr, $this->decode($slice));
753
754                            } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
755                                // we are in an object, so figure
756                                // out the property name and set an
757                                // element in an associative array,
758                                // for now
759                                $parts = array();
760                                
761                                
762                                if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
763                                    // "name":value pair
764                                    $key = $this->decode($parts[1]);
765                                    //Changes for PayPal SDK - starts
766                                    $KeyObjName = $key;
767                                    $KeyObjName[0] = strtoupper($KeyObjName[0]); 
768                                    $val = $this->decode($parts[2], $KeyObjName);
769                                    //Changes for PayPal SDK - ends
770                                    
771                                    if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
772                                        $obj[$key] = $val;
773                                    } else {
774                                        $obj->$key = $val;
775                                    }
776                                } elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
777                                    // name:value pair, where name is unquoted
778                                    $key = $parts[1];
779                                    //Changes for PayPal SDK - starts
780                                    $KeyObjName = $key;
781                                    $KeyObjName[0] = strtoupper($KeyObjName[0]);
782                                    $val = $this->decode($parts[2], $KeyObjName);
783                                   	//Changes for PayPal SDK - ends
784                                   	
785                                    if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
786                                        $obj[$key] = $val;
787                                    } else {
788                                        $obj->$key = $val;
789                                    }
790                                }
791
792                            }
793
794                        } elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
795                            // found a quote, and we are not inside a string
796                            array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
797                            //print("Found start of string at {$c}\n");
798
799                        } elseif (($chrs{$c} == $top['delim']) &&
800                                 ($top['what'] == SERVICES_JSON_IN_STR) &&
801                                 ((strlen(substr($chrs, 0, $c)) - strlen(rtrim(substr($chrs, 0, $c), '\\'))) % 2 != 1)) {
802                            // found a quote, we're in a string, and it's not escaped
803                            // we know that it's not escaped becase there is _not_ an
804                            // odd number of backslashes at the end of the string so far
805                            array_pop($stk);
806                            //print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");
807
808                        } elseif (($chrs{$c} == '[') &&
809                                 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
810                            // found a left-bracket, and we are in an array, object, or slice
811                            array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
812                            //print("Found start of array at {$c}\n");
813
814                        } elseif (($chrs{$c} == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
815                            // found a right-bracket, and we're in an array
816                            array_pop($stk);
817                            //print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
818
819                        } elseif (($chrs{$c} == '{') &&
820                                 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
821                            // found a left-brace, and we are in an array, object, or slice
822                            array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
823                            //print("Found start of object at {$c}\n");
824
825                        } elseif (($chrs{$c} == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
826                            // found a right-brace, and we're in an object
827                            array_pop($stk);
828                            //print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
829
830                        } elseif (($substr_chrs_c_2 == '/*') &&
831                                 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
832                            // found a comment start, and we are in an array, object, or slice
833                            array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
834                            $c++;
835                            //print("Found start of comment at {$c}\n");
836
837                        } elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
838                            // found a comment end, and we're in one now
839                            array_pop($stk);
840                            $c++;
841
842                            for ($i = $top['where']; $i <= $c; ++$i)
843                                $chrs = substr_replace($chrs, ' ', $i, 1);
844
845                            //print("Found end of comment at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
846
847                        }
848
849                    }
850
851                    if (reset($stk) == SERVICES_JSON_IN_ARR) {
852                        return $arr;
853
854                    } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
855                        return $obj;
856
857                    }
858
859                }
860        }
861    }
862
863    /**
864     * @todo Ultimately, this should just call PEAR::isError()
865     */
866    function isError($data, $code = null)
867    {
868        if (class_exists('pear')) {
869            return PEAR::isError($data, $code);
870        } elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
871                                 is_subclass_of($data, 'services_json_error'))) {
872            return true;
873        }
874
875        return false;
876    }
877}
878
879if (class_exists('PEAR_Error')) {
880
881    class Services_JSON_Error extends PEAR_Error
882    {
883        function Services_JSON_Error($message = 'unknown error', $code = null,
884                                     $mode = null, $options = null, $userinfo = null)
885        {
886            parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
887        }
888    }
889
890} else {
891
892    /**
893     * @todo Ultimately, this class shall be descended from PEAR_Error
894     */
895    class Services_JSON_Error
896    {
897        function Services_JSON_Error($message = 'unknown error', $code = null,
898                                     $mode = null, $options = null, $userinfo = null)
899        {
900
901        }
902    }
903
904}
905