ebcd4445eb14a3141c8bbb8ec664a1b557834ac9
[Packages/TYPO3.CMS.git] / typo3 / contrib / json / json.php
1 <?php
2 /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
3
4 /**
5 * Converts to and from JSON format.
6 *
7 * JSON (JavaScript Object Notation) is a lightweight data-interchange
8 * format. It is easy for humans to read and write. It is easy for machines
9 * to parse and generate. It is based on a subset of the JavaScript
10 * Programming Language, Standard ECMA-262 3rd Edition - December 1999.
11 * This feature can also be found in Python. JSON is a text format that is
12 * completely language independent but uses conventions that are familiar
13 * to programmers of the C-family of languages, including C, C++, C#, Java,
14 * JavaScript, Perl, TCL, and many others. These properties make JSON an
15 * ideal data-interchange language.
16 *
17 * This package provides a simple encoder and decoder for JSON notation. It
18 * is intended for use with client-side Javascript applications that make
19 * use of HTTPRequest to perform server communication functions - data can
20 * be encoded into JSON notation for use in a client-side javascript, or
21 * decoded from incoming Javascript requests. JSON format is native to
22 * Javascript, and can be directly eval()'ed with no further parsing
23 * overhead
24 *
25 * All strings should be in ASCII or UTF-8 format!
26 *
27 * LICENSE: Redistribution and use in source and binary forms, with or
28 * without modification, are permitted provided that the following
29 * conditions are met: Redistributions of source code must retain the
30 * above copyright notice, this list of conditions and the following
31 * disclaimer. Redistributions in binary form must reproduce the above
32 * copyright notice, this list of conditions and the following disclaimer
33 * in the documentation and/or other materials provided with the
34 * distribution.
35 *
36 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
37 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
38 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
39 * NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
40 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
41 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
42 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
44 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
45 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
46 * DAMAGE.
47 *
48 * @category
49 * @package Services_JSON
50 * @author Michal Migurski <mike-json@teczno.com>
51 * @author Matt Knapp <mdknapp[at]gmail[dot]com>
52 * @author Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
53 * @copyright 2005 Michal Migurski
54 * @version $Id$
55 * @license http://www.opensource.org/licenses/bsd-license.php
56 * @link http://pear.php.net/pepr/pepr-proposal-show.php?id=198
57 */
58
59 /**
60 * Marker constant for Services_JSON::decode(), used to flag stack state
61 */
62 define('SERVICES_JSON_SLICE', 1);
63
64 /**
65 * Marker constant for Services_JSON::decode(), used to flag stack state
66 */
67 define('SERVICES_JSON_IN_STR', 2);
68
69 /**
70 * Marker constant for Services_JSON::decode(), used to flag stack state
71 */
72 define('SERVICES_JSON_IN_ARR', 3);
73
74 /**
75 * Marker constant for Services_JSON::decode(), used to flag stack state
76 */
77 define('SERVICES_JSON_IN_OBJ', 4);
78
79 /**
80 * Marker constant for Services_JSON::decode(), used to flag stack state
81 */
82 define('SERVICES_JSON_IN_CMT', 5);
83
84 /**
85 * Behavior switch for Services_JSON::decode()
86 */
87 define('SERVICES_JSON_LOOSE_TYPE', 16);
88
89 /**
90 * Behavior switch for Services_JSON::decode()
91 */
92 define('SERVICES_JSON_SUPPRESS_ERRORS', 32);
93
94 /**
95 * Converts to and from JSON format.
96 *
97 * Brief example of use:
98 *
99 * <code>
100 * // create a new instance of Services_JSON
101 * $json = new Services_JSON();
102 *
103 * // convert a complexe value to JSON notation, and send it to the browser
104 * $value = array('foo', 'bar', array(1, 2, 'baz'), array(3, array(4)));
105 * $output = $json->encode($value);
106 *
107 * print($output);
108 * // prints: ["foo","bar",[1,2,"baz"],[3,[4]]]
109 *
110 * // accept incoming POST data, assumed to be in JSON notation
111 * $input = file_get_contents('php://input', 1000000);
112 * $value = $json->decode($input);
113 * </code>
114 */
115 class Services_JSON
116 {
117 /**
118 * constructs a new JSON instance
119 *
120 * @param int $use object behavior flags; combine with boolean-OR
121 *
122 * possible values:
123 * - SERVICES_JSON_LOOSE_TYPE: loose typing.
124 * "{...}" syntax creates associative arrays
125 * instead of objects in decode().
126 * - SERVICES_JSON_SUPPRESS_ERRORS: error suppression.
127 * Values which can't be encoded (e.g. resources)
128 * appear as NULL instead of throwing errors.
129 * By default, a deeply-nested resource will
130 * bubble up with an error, so all return values
131 * from encode() should be checked with isError()
132 */
133 function Services_JSON($use = 0)
134 {
135 $this->use = $use;
136 }
137
138 /**
139 * convert a string from one UTF-16 char to one UTF-8 char
140 *
141 * Normally should be handled by mb_convert_encoding, but
142 * provides a slower PHP-only method for installations
143 * that lack the multibye string extension.
144 *
145 * @param string $utf16 UTF-16 character
146 * @return string UTF-8 character
147 * @access private
148 */
149 function utf162utf8($utf16)
150 {
151 // oh please oh please oh please oh please oh please
152 if(function_exists('mb_convert_encoding')) {
153 return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
154 }
155
156 $bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
157
158 switch(true) {
159 case ((0x7F & $bytes) == $bytes):
160 // this case should never be reached, because we are in ASCII range
161 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
162 return chr(0x7F & $bytes);
163
164 case (0x07FF & $bytes) == $bytes:
165 // return a 2-byte UTF-8 character
166 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
167 return chr(0xC0 | (($bytes >> 6) & 0x1F))
168 . chr(0x80 | ($bytes & 0x3F));
169
170 case (0xFFFF & $bytes) == $bytes:
171 // return a 3-byte UTF-8 character
172 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
173 return chr(0xE0 | (($bytes >> 12) & 0x0F))
174 . chr(0x80 | (($bytes >> 6) & 0x3F))
175 . chr(0x80 | ($bytes & 0x3F));
176 }
177
178 // ignoring UTF-32 for now, sorry
179 return '';
180 }
181
182 /**
183 * convert a string from one UTF-8 char to one UTF-16 char
184 *
185 * Normally should be handled by mb_convert_encoding, but
186 * provides a slower PHP-only method for installations
187 * that lack the multibye string extension.
188 *
189 * @param string $utf8 UTF-8 character
190 * @return string UTF-16 character
191 * @access private
192 */
193 function utf82utf16($utf8)
194 {
195 // oh please oh please oh please oh please oh please
196 if(function_exists('mb_convert_encoding')) {
197 return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
198 }
199
200 switch(strlen($utf8)) {
201 case 1:
202 // this case should never be reached, because we are in ASCII range
203 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
204 return $utf8;
205
206 case 2:
207 // return a UTF-16 character from a 2-byte UTF-8 char
208 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
209 return chr(0x07 & (ord($utf8{0}) >> 2))
210 . chr((0xC0 & (ord($utf8{0}) << 6))
211 | (0x3F & ord($utf8{1})));
212
213 case 3:
214 // return a UTF-16 character from a 3-byte UTF-8 char
215 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
216 return chr((0xF0 & (ord($utf8{0}) << 4))
217 | (0x0F & (ord($utf8{1}) >> 2)))
218 . chr((0xC0 & (ord($utf8{1}) << 6))
219 | (0x7F & ord($utf8{2})));
220 }
221
222 // ignoring UTF-32 for now, sorry
223 return '';
224 }
225
226 /**
227 * encodes an arbitrary variable into JSON format
228 *
229 * @param mixed $var any number, boolean, string, array, or object to be encoded.
230 * see argument 1 to Services_JSON() above for array-parsing behavior.
231 * if var is a strng, note that encode() always expects it
232 * to be in ASCII or UTF-8 format!
233 *
234 * @return mixed JSON string representation of input var or an error if a problem occurs
235 * @access public
236 */
237 function encode($var)
238 {
239 switch (gettype($var)) {
240 case 'boolean':
241 return $var ? 'true' : 'false';
242
243 case 'NULL':
244 return 'null';
245
246 case 'integer':
247 return (int) $var;
248
249 case 'double':
250 case 'float':
251 return (float) $var;
252
253 case 'string':
254 // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
255 $ascii = '';
256 $strlen_var = strlen($var);
257
258 /*
259 * Iterate over every character in the string,
260 * escaping with a slash or encoding to UTF-8 where necessary
261 */
262 for ($c = 0; $c < $strlen_var; ++$c) {
263
264 $ord_var_c = ord($var{$c});
265
266 switch (true) {
267 case $ord_var_c == 0x08:
268 $ascii .= '\b';
269 break;
270 case $ord_var_c == 0x09:
271 $ascii .= '\t';
272 break;
273 case $ord_var_c == 0x0A:
274 $ascii .= '\n';
275 break;
276 case $ord_var_c == 0x0C:
277 $ascii .= '\f';
278 break;
279 case $ord_var_c == 0x0D:
280 $ascii .= '\r';
281 break;
282
283 case $ord_var_c == 0x22:
284 case $ord_var_c == 0x2F:
285 case $ord_var_c == 0x5C:
286 // double quote, slash, slosh
287 $ascii .= '\\'.$var{$c};
288 break;
289
290 case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
291 // characters U-00000000 - U-0000007F (same as ASCII)
292 $ascii .= $var{$c};
293 break;
294
295 case (($ord_var_c & 0xE0) == 0xC0):
296 // characters U-00000080 - U-000007FF, mask 110XXXXX
297 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
298 $char = pack('C*', $ord_var_c, ord($var{$c + 1}));
299 $c += 1;
300 $utf16 = $this->utf82utf16($char);
301 $ascii .= sprintf('\u%04s', bin2hex($utf16));
302 break;
303
304 case (($ord_var_c & 0xF0) == 0xE0):
305 // characters U-00000800 - U-0000FFFF, mask 1110XXXX
306 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
307 $char = pack('C*', $ord_var_c,
308 ord($var{$c + 1}),
309 ord($var{$c + 2}));
310 $c += 2;
311 $utf16 = $this->utf82utf16($char);
312 $ascii .= sprintf('\u%04s', bin2hex($utf16));
313 break;
314
315 case (($ord_var_c & 0xF8) == 0xF0):
316 // characters U-00010000 - U-001FFFFF, mask 11110XXX
317 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
318 $char = pack('C*', $ord_var_c,
319 ord($var{$c + 1}),
320 ord($var{$c + 2}),
321 ord($var{$c + 3}));
322 $c += 3;
323 $utf16 = $this->utf82utf16($char);
324 $ascii .= sprintf('\u%04s', bin2hex($utf16));
325 break;
326
327 case (($ord_var_c & 0xFC) == 0xF8):
328 // characters U-00200000 - U-03FFFFFF, mask 111110XX
329 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
330 $char = pack('C*', $ord_var_c,
331 ord($var{$c + 1}),
332 ord($var{$c + 2}),
333 ord($var{$c + 3}),
334 ord($var{$c + 4}));
335 $c += 4;
336 $utf16 = $this->utf82utf16($char);
337 $ascii .= sprintf('\u%04s', bin2hex($utf16));
338 break;
339
340 case (($ord_var_c & 0xFE) == 0xFC):
341 // characters U-04000000 - U-7FFFFFFF, mask 1111110X
342 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
343 $char = pack('C*', $ord_var_c,
344 ord($var{$c + 1}),
345 ord($var{$c + 2}),
346 ord($var{$c + 3}),
347 ord($var{$c + 4}),
348 ord($var{$c + 5}));
349 $c += 5;
350 $utf16 = $this->utf82utf16($char);
351 $ascii .= sprintf('\u%04s', bin2hex($utf16));
352 break;
353 }
354 }
355
356 return '"'.$ascii.'"';
357
358 case 'array':
359 /*
360 * As per JSON spec if any array key is not an integer
361 * we must treat the the whole array as an object. We
362 * also try to catch a sparsely populated associative
363 * array with numeric keys here because some JS engines
364 * will create an array with empty indexes up to
365 * max_index which can cause memory issues and because
366 * the keys, which may be relevant, will be remapped
367 * otherwise.
368 *
369 * As per the ECMA and JSON specification an object may
370 * have any string as a property. Unfortunately due to
371 * a hole in the ECMA specification if the key is a
372 * ECMA reserved word or starts with a digit the
373 * parameter is only accessible using ECMAScript's
374 * bracket notation.
375 */
376
377 // treat as a JSON object
378 if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
379 $properties = array_map(array($this, 'name_value'),
380 array_keys($var),
381 array_values($var));
382
383 foreach($properties as $property) {
384 if(Services_JSON::isError($property)) {
385 return $property;
386 }
387 }
388
389 return '{' . join(',', $properties) . '}';
390 }
391
392 // treat it like a regular array
393 $elements = array_map(array($this, 'encode'), $var);
394
395 foreach($elements as $element) {
396 if(Services_JSON::isError($element)) {
397 return $element;
398 }
399 }
400
401 return '[' . join(',', $elements) . ']';
402
403 case 'object':
404 $vars = get_object_vars($var);
405
406 $properties = array_map(array($this, 'name_value'),
407 array_keys($vars),
408 array_values($vars));
409
410 foreach($properties as $property) {
411 if(Services_JSON::isError($property)) {
412 return $property;
413 }
414 }
415
416 return '{' . join(',', $properties) . '}';
417
418 default:
419 return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
420 ? 'null'
421 : new Services_JSON_Error(gettype($var)." can not be encoded as JSON string");
422 }
423 }
424
425 /**
426 * array-walking function for use in generating JSON-formatted name-value pairs
427 *
428 * @param string $name name of key to use
429 * @param mixed $value reference to an array element to be encoded
430 *
431 * @return string JSON-formatted name-value pair, like '"name":value'
432 * @access private
433 */
434 function name_value($name, $value)
435 {
436 $encoded_value = $this->encode($value);
437
438 if(Services_JSON::isError($encoded_value)) {
439 return $encoded_value;
440 }
441
442 return $this->encode(strval($name)) . ':' . $encoded_value;
443 }
444
445 /**
446 * reduce a string by removing leading and trailing comments and whitespace
447 *
448 * @param $str string string value to strip of comments and whitespace
449 *
450 * @return string string value stripped of comments and whitespace
451 * @access private
452 */
453 function reduce_string($str)
454 {
455 $str = preg_replace(array(
456
457 // eliminate single line comments in '// ...' form
458 '#^\s*//(.+)$#m',
459
460 // eliminate multi-line comments in '/* ... */' form, at start of string
461 '#^\s*/\*(.+)\*/#Us',
462
463 // eliminate multi-line comments in '/* ... */' form, at end of string
464 '#/\*(.+)\*/\s*$#Us'
465
466 ), '', $str);
467
468 // eliminate extraneous space
469 return trim($str);
470 }
471
472 /**
473 * decodes a JSON string into appropriate variable
474 *
475 * @param string $str JSON-formatted string
476 *
477 * @return mixed number, boolean, string, array, or object
478 * corresponding to given JSON input string.
479 * See argument 1 to Services_JSON() above for object-output behavior.
480 * Note that decode() always returns strings
481 * in ASCII or UTF-8 format!
482 * @access public
483 */
484 function decode($str)
485 {
486 $str = $this->reduce_string($str);
487
488 switch (strtolower($str)) {
489 case 'true':
490 return true;
491
492 case 'false':
493 return false;
494
495 case 'null':
496 return null;
497
498 default:
499 $m = array();
500
501 if (is_numeric($str)) {
502 // Lookie-loo, it's a number
503
504 // This would work on its own, but I'm trying to be
505 // good about returning integers where appropriate:
506 // return (float)$str;
507
508 // Return float or int, as appropriate
509 return ((float)$str == (integer)$str)
510 ? (integer)$str
511 : (float)$str;
512
513 } elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
514 // STRINGS RETURNED IN UTF-8 FORMAT
515 $delim = substr($str, 0, 1);
516 $chrs = substr($str, 1, -1);
517 $utf8 = '';
518 $strlen_chrs = strlen($chrs);
519
520 for ($c = 0; $c < $strlen_chrs; ++$c) {
521
522 $substr_chrs_c_2 = substr($chrs, $c, 2);
523 $ord_chrs_c = ord($chrs{$c});
524
525 switch (true) {
526 case $substr_chrs_c_2 == '\b':
527 $utf8 .= chr(0x08);
528 ++$c;
529 break;
530 case $substr_chrs_c_2 == '\t':
531 $utf8 .= chr(0x09);
532 ++$c;
533 break;
534 case $substr_chrs_c_2 == '\n':
535 $utf8 .= chr(0x0A);
536 ++$c;
537 break;
538 case $substr_chrs_c_2 == '\f':
539 $utf8 .= chr(0x0C);
540 ++$c;
541 break;
542 case $substr_chrs_c_2 == '\r':
543 $utf8 .= chr(0x0D);
544 ++$c;
545 break;
546
547 case $substr_chrs_c_2 == '\\"':
548 case $substr_chrs_c_2 == '\\\'':
549 case $substr_chrs_c_2 == '\\\\':
550 case $substr_chrs_c_2 == '\\/':
551 if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
552 ($delim == "'" && $substr_chrs_c_2 != '\\"')) {
553 $utf8 .= $chrs{++$c};
554 }
555 break;
556
557 case preg_match('/\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
558 // single, escaped unicode character
559 $utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
560 . chr(hexdec(substr($chrs, ($c + 4), 2)));
561 $utf8 .= $this->utf162utf8($utf16);
562 $c += 5;
563 break;
564
565 case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
566 $utf8 .= $chrs{$c};
567 break;
568
569 case ($ord_chrs_c & 0xE0) == 0xC0:
570 // characters U-00000080 - U-000007FF, mask 110XXXXX
571 //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
572 $utf8 .= substr($chrs, $c, 2);
573 ++$c;
574 break;
575
576 case ($ord_chrs_c & 0xF0) == 0xE0:
577 // characters U-00000800 - U-0000FFFF, mask 1110XXXX
578 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
579 $utf8 .= substr($chrs, $c, 3);
580 $c += 2;
581 break;
582
583 case ($ord_chrs_c & 0xF8) == 0xF0:
584 // characters U-00010000 - U-001FFFFF, mask 11110XXX
585 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
586 $utf8 .= substr($chrs, $c, 4);
587 $c += 3;
588 break;
589
590 case ($ord_chrs_c & 0xFC) == 0xF8:
591 // characters U-00200000 - U-03FFFFFF, mask 111110XX
592 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
593 $utf8 .= substr($chrs, $c, 5);
594 $c += 4;
595 break;
596
597 case ($ord_chrs_c & 0xFE) == 0xFC:
598 // characters U-04000000 - U-7FFFFFFF, mask 1111110X
599 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
600 $utf8 .= substr($chrs, $c, 6);
601 $c += 5;
602 break;
603
604 }
605
606 }
607
608 return $utf8;
609
610 } elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
611 // array, or object notation
612
613 if ($str{0} == '[') {
614 $stk = array(SERVICES_JSON_IN_ARR);
615 $arr = array();
616 } else {
617 if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
618 $stk = array(SERVICES_JSON_IN_OBJ);
619 $obj = array();
620 } else {
621 $stk = array(SERVICES_JSON_IN_OBJ);
622 $obj = new stdClass();
623 }
624 }
625
626 array_push($stk, array('what' => SERVICES_JSON_SLICE,
627 'where' => 0,
628 'delim' => false));
629
630 $chrs = substr($str, 1, -1);
631 $chrs = $this->reduce_string($chrs);
632
633 if ($chrs == '') {
634 if (reset($stk) == SERVICES_JSON_IN_ARR) {
635 return $arr;
636
637 } else {
638 return $obj;
639
640 }
641 }
642
643 //print("\nparsing {$chrs}\n");
644
645 $strlen_chrs = strlen($chrs);
646
647 for ($c = 0; $c <= $strlen_chrs; ++$c) {
648
649 $top = end($stk);
650 $substr_chrs_c_2 = substr($chrs, $c, 2);
651
652 if (($c == $strlen_chrs) || (($chrs{$c} == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
653 // found a comma that is not inside a string, array, etc.,
654 // OR we've reached the end of the character list
655 $slice = substr($chrs, $top['where'], ($c - $top['where']));
656 array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
657 //print("Found split at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
658
659 if (reset($stk) == SERVICES_JSON_IN_ARR) {
660 // we are in an array, so just push an element onto the stack
661 array_push($arr, $this->decode($slice));
662
663 } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
664 // we are in an object, so figure
665 // out the property name and set an
666 // element in an associative array,
667 // for now
668 $parts = array();
669
670 if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
671 // "name":value pair
672 $key = $this->decode($parts[1]);
673 $val = $this->decode($parts[2]);
674
675 if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
676 $obj[$key] = $val;
677 } else {
678 $obj->$key = $val;
679 }
680 } elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
681 // name:value pair, where name is unquoted
682 $key = $parts[1];
683 $val = $this->decode($parts[2]);
684
685 if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
686 $obj[$key] = $val;
687 } else {
688 $obj->$key = $val;
689 }
690 }
691
692 }
693
694 } elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
695 // found a quote, and we are not inside a string
696 array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
697 //print("Found start of string at {$c}\n");
698
699 } elseif (($chrs{$c} == $top['delim']) &&
700 ($top['what'] == SERVICES_JSON_IN_STR) &&
701 ((strlen(substr($chrs, 0, $c)) - strlen(rtrim(substr($chrs, 0, $c), '\\'))) % 2 != 1)) {
702 // found a quote, we're in a string, and it's not escaped
703 // we know that it's not escaped becase there is _not_ an
704 // odd number of backslashes at the end of the string so far
705 array_pop($stk);
706 //print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");
707
708 } elseif (($chrs{$c} == '[') &&
709 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
710 // found a left-bracket, and we are in an array, object, or slice
711 array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
712 //print("Found start of array at {$c}\n");
713
714 } elseif (($chrs{$c} == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
715 // found a right-bracket, and we're in an array
716 array_pop($stk);
717 //print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
718
719 } elseif (($chrs{$c} == '{') &&
720 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
721 // found a left-brace, and we are in an array, object, or slice
722 array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
723 //print("Found start of object at {$c}\n");
724
725 } elseif (($chrs{$c} == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
726 // found a right-brace, and we're in an object
727 array_pop($stk);
728 //print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
729
730 } elseif (($substr_chrs_c_2 == '/*') &&
731 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
732 // found a comment start, and we are in an array, object, or slice
733 array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
734 $c++;
735 //print("Found start of comment at {$c}\n");
736
737 } elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
738 // found a comment end, and we're in one now
739 array_pop($stk);
740 $c++;
741
742 for ($i = $top['where']; $i <= $c; ++$i)
743 $chrs = substr_replace($chrs, ' ', $i, 1);
744
745 //print("Found end of comment at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
746
747 }
748
749 }
750
751 if (reset($stk) == SERVICES_JSON_IN_ARR) {
752 return $arr;
753
754 } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
755 return $obj;
756
757 }
758
759 }
760 }
761 }
762
763 /**
764 * @todo Ultimately, this should just call PEAR::isError()
765 */
766 function isError($data, $code = null)
767 {
768 if (class_exists('pear')) {
769 return PEAR::isError($data, $code);
770 } elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
771 is_subclass_of($data, 'services_json_error'))) {
772 return true;
773 }
774
775 return false;
776 }
777 }
778
779 if (class_exists('PEAR_Error')) {
780
781 class Services_JSON_Error extends PEAR_Error
782 {
783 function Services_JSON_Error($message = 'unknown error', $code = null,
784 $mode = null, $options = null, $userinfo = null)
785 {
786 parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
787 }
788 }
789
790 } else {
791
792 /**
793 * @todo Ultimately, this class shall be descended from PEAR_Error
794 */
795 class Services_JSON_Error
796 {
797 function Services_JSON_Error($message = 'unknown error', $code = null,
798 $mode = null, $options = null, $userinfo = null)
799 {
800
801 }
802 }
803
804 }
805
806 ?>