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Fix up XPath syntax for proper functioning in Safari (patch from Jacob Potter <jdpott...
[patchfork.git] / inc / JSON.php
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JW		 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 CVS: $Id: JSON.php,v 1.31 2006/06/28 05:54:17 migurski Exp $
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 */
62define('SERVICES_JSON_SLICE', 1);
63
64/**
65 * Marker constant for Services_JSON::decode(), used to flag stack state
66 */
67define('SERVICES_JSON_IN_STR', 2);
68
69/**
70 * Marker constant for Services_JSON::decode(), used to flag stack state
71 */
72define('SERVICES_JSON_IN_ARR', 3);
73
74/**
75 * Marker constant for Services_JSON::decode(), used to flag stack state
76 */
77define('SERVICES_JSON_IN_OBJ', 4);
78
79/**
80 * Marker constant for Services_JSON::decode(), used to flag stack state
81 */
82define('SERVICES_JSON_IN_CMT', 5);
83
84/**
85 * Behavior switch for Services_JSON::decode()
86 */
87define('SERVICES_JSON_LOOSE_TYPE', 16);
88
89/**
90 * Behavior switch for Services_JSON::decode()
91 */
92define('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 */
115class 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 /* modified for pitchfork to use echo instead of recursing over all elements and returning a *large* string */
228 /* could probably remove the conversion thing as input is utf-8 and output is utf-8 */
229 /**
230 * encodes an arbitrary variable into JSON format
231 *
232 * @param mixed $var any number, boolean, string, array, or object to be encoded.
233 * see argument 1 to Services_JSON() above for array-parsing behavior.
234 * if var is a strng, note that encode() always expects it
235 * to be in ASCII or UTF-8 format!
236 *
237 * @return mixed JSON string representation of input var or an error if a problem occurs
238 * @access public
239 */
240 function encode($var)
241 {
242 switch (gettype($var)) {
243 case 'boolean':
244 echo $var ? 'true' : 'false';
245 return;
246
247 case 'NULL':
248 echo 'null';
249 return;
250
251 case 'integer':
252 echo (int) $var;
253 return;
254
255 case 'double':
256 case 'float':
257 echo (float) $var;
258 return;
259
260 case 'string':
261 // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
262 $ascii = '';
263 $strlen_var = strlen($var);
264
265 /*
266 * Iterate over every character in the string,
267 * escaping with a slash or encoding to UTF-8 where necessary
268 */
269 for ($c = 0; $c < $strlen_var; ++$c) {
270
271 $ord_var_c = ord($var{$c});
272
273 switch (true) {
274 case $ord_var_c == 0x08:
275 $ascii .= '\b';
276 break;
277 case $ord_var_c == 0x09:
278 $ascii .= '\t';
279 break;
280 case $ord_var_c == 0x0A:
281 $ascii .= '\n';
282 break;
283 case $ord_var_c == 0x0C:
284 $ascii .= '\f';
285 break;
286 case $ord_var_c == 0x0D:
287 $ascii .= '\r';
288 break;
289
290 case $ord_var_c == 0x22:
291 case $ord_var_c == 0x2F:
292 case $ord_var_c == 0x5C:
293 // double quote, slash, slosh
294 $ascii .= '\\'.$var{$c};
295 break;
296
297 case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
298 // characters U-00000000 - U-0000007F (same as ASCII)
299 $ascii .= $var{$c};
300 break;
301
302 case (($ord_var_c & 0xE0) == 0xC0):
303 // characters U-00000080 - U-000007FF, mask 110XXXXX
304 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
305 $char = pack('C*', $ord_var_c, ord($var{$c + 1}));
306 $c += 1;
307 $utf16 = $this->utf82utf16($char);
308 $ascii .= sprintf('\u%04s', bin2hex($utf16));
309 break;
310
311 case (($ord_var_c & 0xF0) == 0xE0):
312 // characters U-00000800 - U-0000FFFF, mask 1110XXXX
313 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
314 $char = pack('C*', $ord_var_c,
315 ord($var{$c + 1}),
316 ord($var{$c + 2}));
317 $c += 2;
318 $utf16 = $this->utf82utf16($char);
319 $ascii .= sprintf('\u%04s', bin2hex($utf16));
320 break;
321
322 case (($ord_var_c & 0xF8) == 0xF0):
323 // characters U-00010000 - U-001FFFFF, mask 11110XXX
324 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
325 $char = pack('C*', $ord_var_c,
326 ord($var{$c + 1}),
327 ord($var{$c + 2}),
328 ord($var{$c + 3}));
329 $c += 3;
330 $utf16 = $this->utf82utf16($char);
331 $ascii .= sprintf('\u%04s', bin2hex($utf16));
332 break;
333
334 case (($ord_var_c & 0xFC) == 0xF8):
335 // characters U-00200000 - U-03FFFFFF, mask 111110XX
336 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
337 $char = pack('C*', $ord_var_c,
338 ord($var{$c + 1}),
339 ord($var{$c + 2}),
340 ord($var{$c + 3}),
341 ord($var{$c + 4}));
342 $c += 4;
343 $utf16 = $this->utf82utf16($char);
344 $ascii .= sprintf('\u%04s', bin2hex($utf16));
345 break;
346
347 case (($ord_var_c & 0xFE) == 0xFC):
348 // characters U-04000000 - U-7FFFFFFF, mask 1111110X
349 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
350 $char = pack('C*', $ord_var_c,
351 ord($var{$c + 1}),
352 ord($var{$c + 2}),
353 ord($var{$c + 3}),
354 ord($var{$c + 4}),
355 ord($var{$c + 5}));
356 $c += 5;
357 $utf16 = $this->utf82utf16($char);
358 $ascii .= sprintf('\u%04s', bin2hex($utf16));
359 break;
360 }
361 }
362
363 echo '"'.$ascii.'"';
364 return;
365
366 case 'array':
367 /*
368 * As per JSON spec if any array key is not an integer
369 * we must treat the the whole array as an object. We
370 * also try to catch a sparsely populated associative
371 * array with numeric keys here because some JS engines
372 * will create an array with empty indexes up to
373 * max_index which can cause memory issues and because
374 * the keys, which may be relevant, will be remapped
375 * otherwise.
376 *
377 * As per the ECMA and JSON specification an object may
378 * have any string as a property. Unfortunately due to
379 * a hole in the ECMA specification if the key is a
380 * ECMA reserved word or starts with a digit the
381 * parameter is only accessible using ECMAScript's
382 * bracket notation.
383 */
384
385 // treat as a JSON object
386 if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
387 echo "{";
388 $first = true;
389 foreach($var as $k => $v) {
390 if($first) $first = false;
391 else echo ",";
392 $this->name_value($k, $v);
393 }
394
395 echo '}';
396 return;
397 }
398
399 // treat it like a regular array
400 echo "[";
401 $first = true;
402 foreach($var as $e) {
403 if($first) $first = false;
404 else echo ",";
405 $this->encode($e);
406 }
407 echo "]";
408 return;
409
410 case 'object':
411 echo "{";
412 $first = true;
413 foreach($var as $k => $v) {
414 if($first)
415 $first = false;
416 else echo ",";
417 $this->name_value($k, $v);
418 }
419
420 echo '}';
421 return;
422
423 default:
424 echo ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
425 ? 'null'
426 : 'error encoding';
427 return;
428 }
429 }
430
431 /**
432 * array-walking function for use in generating JSON-formatted name-value pairs
433 *
434 * @param string $name name of key to use
435 * @param mixed $value reference to an array element to be encoded
436 *
437 * @return string JSON-formatted name-value pair, like '"name":value'
438 * @access private
439 */
440 function name_value($name, $value)
441 {
442 $this->encode(strval($name));
443 echo ':';
444 $this->encode($value);
445 }
446
447 /**
448 * reduce a string by removing leading and trailing comments and whitespace
449 *
450 * @param $str string string value to strip of comments and whitespace
451 *
452 * @return string string value stripped of comments and whitespace
453 * @access private
454 */
455 function reduce_string($str)
456 {
457 $str = preg_replace(array(
458
459 // eliminate single line comments in '// ...' form
460 '#^\s*//(.+)$#m',
461
462 // eliminate multi-line comments in '/* ... */' form, at start of string
463 '#^\s*/\*(.+)\*/#Us',
464
465 // eliminate multi-line comments in '/* ... */' form, at end of string
466 '#/\*(.+)\*/\s*$#Us'
467
468 ), '', $str);
469
470 // eliminate extraneous space
471 return trim($str);
472 }
473
474 /**
475 * decodes a JSON string into appropriate variable
476 *
477 * @param string $str JSON-formatted string
478 *
479 * @return mixed number, boolean, string, array, or object
480 * corresponding to given JSON input string.
481 * See argument 1 to Services_JSON() above for object-output behavior.
482 * Note that decode() always returns strings
483 * in ASCII or UTF-8 format!
484 * @access public
485 */
486 function decode($str)
487 {
488 $str = $this->reduce_string($str);
489
490 switch (strtolower($str)) {
491 case 'true':
492 return true;
493
494 case 'false':
495 return false;
496
497 case 'null':
498 return null;
499
500 default:
501 $m = array();
502
503 if (is_numeric($str)) {
504 // Lookie-loo, it's a number
505
506 // This would work on its own, but I'm trying to be
507 // good about returning integers where appropriate:
508 // return (float)$str;
509
510 // Return float or int, as appropriate
511 return ((float)$str == (integer)$str)
512 ? (integer)$str
513 : (float)$str;
514
515 } elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
516 // STRINGS RETURNED IN UTF-8 FORMAT
517 $delim = substr($str, 0, 1);
518 $chrs = substr($str, 1, -1);
519 $utf8 = '';
520 $strlen_chrs = strlen($chrs);
521
522 for ($c = 0; $c < $strlen_chrs; ++$c) {
523
524 $substr_chrs_c_2 = substr($chrs, $c, 2);
525 $ord_chrs_c = ord($chrs{$c});
526
527 switch (true) {
528 case $substr_chrs_c_2 == '\b':
529 $utf8 .= chr(0x08);
530 ++$c;
531 break;
532 case $substr_chrs_c_2 == '\t':
533 $utf8 .= chr(0x09);
534 ++$c;
535 break;
536 case $substr_chrs_c_2 == '\n':
537 $utf8 .= chr(0x0A);
538 ++$c;
539 break;
540 case $substr_chrs_c_2 == '\f':
541 $utf8 .= chr(0x0C);
542 ++$c;
543 break;
544 case $substr_chrs_c_2 == '\r':
545 $utf8 .= chr(0x0D);
546 ++$c;
547 break;
548
549 case $substr_chrs_c_2 == '\\"':
550 case $substr_chrs_c_2 == '\\\'':
551 case $substr_chrs_c_2 == '\\\\':
552 case $substr_chrs_c_2 == '\\/':
553 if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
554 ($delim == "'" && $substr_chrs_c_2 != '\\"')) {
555 $utf8 .= $chrs{++$c};
556 }
557 break;
558
559 case preg_match('/\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
560 // single, escaped unicode character
561 $utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
562 . chr(hexdec(substr($chrs, ($c + 4), 2)));
563 $utf8 .= $this->utf162utf8($utf16);
564 $c += 5;
565 break;
566
567 case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
568 $utf8 .= $chrs{$c};
569 break;
570
571 case ($ord_chrs_c & 0xE0) == 0xC0:
572 // characters U-00000080 - U-000007FF, mask 110XXXXX
573 //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
574 $utf8 .= substr($chrs, $c, 2);
575 ++$c;
576 break;
577
578 case ($ord_chrs_c & 0xF0) == 0xE0:
579 // characters U-00000800 - U-0000FFFF, mask 1110XXXX
580 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
581 $utf8 .= substr($chrs, $c, 3);
582 $c += 2;
583 break;
584
585 case ($ord_chrs_c & 0xF8) == 0xF0:
586 // characters U-00010000 - U-001FFFFF, mask 11110XXX
587 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
588 $utf8 .= substr($chrs, $c, 4);
589 $c += 3;
590 break;
591
592 case ($ord_chrs_c & 0xFC) == 0xF8:
593 // characters U-00200000 - U-03FFFFFF, mask 111110XX
594 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
595 $utf8 .= substr($chrs, $c, 5);
596 $c += 4;
597 break;
598
599 case ($ord_chrs_c & 0xFE) == 0xFC:
600 // characters U-04000000 - U-7FFFFFFF, mask 1111110X
601 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
602 $utf8 .= substr($chrs, $c, 6);
603 $c += 5;
604 break;
605
606 }
607
608 }
609
610 return $utf8;
611
612 } elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
613 // array, or object notation
614
615 if ($str{0} == '[') {
616 $stk = array(SERVICES_JSON_IN_ARR);
617 $arr = array();
618 } else {
619 if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
620 $stk = array(SERVICES_JSON_IN_OBJ);
621 $obj = array();
622 } else {
623 $stk = array(SERVICES_JSON_IN_OBJ);
624 $obj = new stdClass();
625 }
626 }
627
628 array_push($stk, array('what' => SERVICES_JSON_SLICE,
629 'where' => 0,
630 'delim' => false));
631
632 $chrs = substr($str, 1, -1);
633 $chrs = $this->reduce_string($chrs);
634
635 if ($chrs == '') {
636 if (reset($stk) == SERVICES_JSON_IN_ARR) {
637 return $arr;
638
639 } else {
640 return $obj;
641
642 }
643 }
644
645 //print("\nparsing {$chrs}\n");
646
647 $strlen_chrs = strlen($chrs);
648
649 for ($c = 0; $c <= $strlen_chrs; ++$c) {
650
651 $top = end($stk);
652 $substr_chrs_c_2 = substr($chrs, $c, 2);
653
654 if (($c == $strlen_chrs) || (($chrs{$c} == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
655 // found a comma that is not inside a string, array, etc.,
656 // OR we've reached the end of the character list
657 $slice = substr($chrs, $top['where'], ($c - $top['where']));
658 array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
659 //print("Found split at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
660
661 if (reset($stk) == SERVICES_JSON_IN_ARR) {
662 // we are in an array, so just push an element onto the stack
663 array_push($arr, $this->decode($slice));
664
665 } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
666 // we are in an object, so figure
667 // out the property name and set an
668 // element in an associative array,
669 // for now
670 $parts = array();
671
672 if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
673 // "name":value pair
674 $key = $this->decode($parts[1]);
675 $val = $this->decode($parts[2]);
676
677 if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
678 $obj[$key] = $val;
679 } else {
680 $obj->$key = $val;
681 }
682 } elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
683 // name:value pair, where name is unquoted
684 $key = $parts[1];
685 $val = $this->decode($parts[2]);
686
687 if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
688 $obj[$key] = $val;
689 } else {
690 $obj->$key = $val;
691 }
692 }
693
694 }
695
696 } elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
697 // found a quote, and we are not inside a string
698 array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
699 //print("Found start of string at {$c}\n");
700
701 } elseif (($chrs{$c} == $top['delim']) &&
702 ($top['what'] == SERVICES_JSON_IN_STR) &&
703 ((strlen(substr($chrs, 0, $c)) - strlen(rtrim(substr($chrs, 0, $c), '\\'))) % 2 != 1)) {
704 // found a quote, we're in a string, and it's not escaped
705 // we know that it's not escaped becase there is _not_ an
706 // odd number of backslashes at the end of the string so far
707 array_pop($stk);
708 //print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");
709
710 } elseif (($chrs{$c} == '[') &&
711 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
712 // found a left-bracket, and we are in an array, object, or slice
713 array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
714 //print("Found start of array at {$c}\n");
715
716 } elseif (($chrs{$c} == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
717 // found a right-bracket, and we're in an array
718 array_pop($stk);
719 //print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
720
721 } elseif (($chrs{$c} == '{') &&
722 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
723 // found a left-brace, and we are in an array, object, or slice
724 array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
725 //print("Found start of object at {$c}\n");
726
727 } elseif (($chrs{$c} == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
728 // found a right-brace, and we're in an object
729 array_pop($stk);
730 //print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
731
732 } elseif (($substr_chrs_c_2 == '/*') &&
733 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
734 // found a comment start, and we are in an array, object, or slice
735 array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
736 $c++;
737 //print("Found start of comment at {$c}\n");
738
739 } elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
740 // found a comment end, and we're in one now
741 array_pop($stk);
742 $c++;
743
744 for ($i = $top['where']; $i <= $c; ++$i)
745 $chrs = substr_replace($chrs, ' ', $i, 1);
746
747 //print("Found end of comment at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
748
749 }
750
751 }
752
753 if (reset($stk) == SERVICES_JSON_IN_ARR) {
754 return $arr;
755
756 } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
757 return $obj;
758
759 }
760
761 }
762 }
763 }
764
765 /**
766 * @todo Ultimately, this should just call PEAR::isError()
767 */
768 function isError($data, $code = null)
769 {
770 if (class_exists('pear')) {
771 return PEAR::isError($data, $code);
772 } elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
773 is_subclass_of($data, 'services_json_error'))) {
774 return true;
775 }
776
777 return false;
778 }
779}
780
781if (class_exists('PEAR_Error')) {
782
783 class Services_JSON_Error extends PEAR_Error
784 {
785 function Services_JSON_Error($message = 'unknown error', $code = null,
786 $mode = null, $options = null, $userinfo = null)
787 {
788 parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
789 }
790 }
791
792} else {
793
794 /**
795 * @todo Ultimately, this class shall be descended from PEAR_Error
796 */
797 class Services_JSON_Error
798 {
799 function Services_JSON_Error($message = 'unknown error', $code = null,
800 $mode = null, $options = null, $userinfo = null)
801 {
802
803 }
804 }
805
806}
807
808?>
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