source: trunk/www.guidonia.net/wp/wp-content/plugins/fbconnect/facebook-client4/classes/JSON.php@ 44

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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 */
115if (!class_exists('Services_JSON')):
116class Services_JSON
117{
118 /**
119 * constructs a new JSON instance
120 *
121 * @param int $use object behavior flags; combine with boolean-OR
122 *
123 * possible values:
124 * - SERVICES_JSON_LOOSE_TYPE: loose typing.
125 * "{...}" syntax creates associative arrays
126 * instead of objects in decode().
127 * - SERVICES_JSON_SUPPRESS_ERRORS: error suppression.
128 * Values which can't be encoded (e.g. resources)
129 * appear as NULL instead of throwing errors.
130 * By default, a deeply-nested resource will
131 * bubble up with an error, so all return values
132 * from encode() should be checked with isError()
133 */
134 function Services_JSON($use = 0)
135 {
136 $this->use = $use;
137 }
138
139 /**
140 * convert a string from one UTF-16 char to one UTF-8 char
141 *
142 * Normally should be handled by mb_convert_encoding, but
143 * provides a slower PHP-only method for installations
144 * that lack the multibye string extension.
145 *
146 * @param string $utf16 UTF-16 character
147 * @return string UTF-8 character
148 * @access private
149 */
150 function utf162utf8($utf16)
151 {
152 // oh please oh please oh please oh please oh please
153 if(function_exists('mb_convert_encoding')) {
154 return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
155 }
156
157 $bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
158
159 switch(true) {
160 case ((0x7F & $bytes) == $bytes):
161 // this case should never be reached, because we are in ASCII range
162 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
163 return chr(0x7F & $bytes);
164
165 case (0x07FF & $bytes) == $bytes:
166 // return a 2-byte UTF-8 character
167 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
168 return chr(0xC0 | (($bytes >> 6) & 0x1F))
169 . chr(0x80 | ($bytes & 0x3F));
170
171 case (0xFFFF & $bytes) == $bytes:
172 // return a 3-byte UTF-8 character
173 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
174 return chr(0xE0 | (($bytes >> 12) & 0x0F))
175 . chr(0x80 | (($bytes >> 6) & 0x3F))
176 . chr(0x80 | ($bytes & 0x3F));
177 }
178
179 // ignoring UTF-32 for now, sorry
180 return '';
181 }
182
183 /**
184 * convert a string from one UTF-8 char to one UTF-16 char
185 *
186 * Normally should be handled by mb_convert_encoding, but
187 * provides a slower PHP-only method for installations
188 * that lack the multibye string extension.
189 *
190 * @param string $utf8 UTF-8 character
191 * @return string UTF-16 character
192 * @access private
193 */
194 function utf82utf16($utf8)
195 {
196 // oh please oh please oh please oh please oh please
197 if(function_exists('mb_convert_encoding')) {
198 return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
199 }
200
201 switch(strlen($utf8)) {
202 case 1:
203 // this case should never be reached, because we are in ASCII range
204 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
205 return $utf8;
206
207 case 2:
208 // return a UTF-16 character from a 2-byte UTF-8 char
209 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
210 return chr(0x07 & (ord($utf8{0}) >> 2))
211 . chr((0xC0 & (ord($utf8{0}) << 6))
212 | (0x3F & ord($utf8{1})));
213
214 case 3:
215 // return a UTF-16 character from a 3-byte UTF-8 char
216 // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
217 return chr((0xF0 & (ord($utf8{0}) << 4))
218 | (0x0F & (ord($utf8{1}) >> 2)))
219 . chr((0xC0 & (ord($utf8{1}) << 6))
220 | (0x7F & ord($utf8{2})));
221 }
222
223 // ignoring UTF-32 for now, sorry
224 return '';
225 }
226
227 /**
228 * encodes an arbitrary variable into JSON format
229 *
230 * @param mixed $var any number, boolean, string, array, or object to be encoded.
231 * see argument 1 to Services_JSON() above for array-parsing behavior.
232 * if var is a strng, note that encode() always expects it
233 * to be in ASCII or UTF-8 format!
234 *
235 * @return mixed JSON string representation of input var or an error if a problem occurs
236 * @access public
237 */
238 function encode($var)
239 {
240 switch (gettype($var)) {
241 case 'boolean':
242 return $var ? 'true' : 'false';
243
244 case 'NULL':
245 return 'null';
246
247 case 'integer':
248 return (int) $var;
249
250 case 'double':
251 case 'float':
252 return (float) $var;
253
254 case 'string':
255 // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
256 $ascii = '';
257 $strlen_var = strlen($var);
258
259 /*
260 * Iterate over every character in the string,
261 * escaping with a slash or encoding to UTF-8 where necessary
262 */
263 for ($c = 0; $c < $strlen_var; ++$c) {
264
265 $ord_var_c = ord($var{$c});
266
267 switch (true) {
268 case $ord_var_c == 0x08:
269 $ascii .= '\b';
270 break;
271 case $ord_var_c == 0x09:
272 $ascii .= '\t';
273 break;
274 case $ord_var_c == 0x0A:
275 $ascii .= '\n';
276 break;
277 case $ord_var_c == 0x0C:
278 $ascii .= '\f';
279 break;
280 case $ord_var_c == 0x0D:
281 $ascii .= '\r';
282 break;
283
284 case $ord_var_c == 0x22:
285 case $ord_var_c == 0x2F:
286 case $ord_var_c == 0x5C:
287 // double quote, slash, slosh
288 $ascii .= '\\'.$var{$c};
289 break;
290
291 case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
292 // characters U-00000000 - U-0000007F (same as ASCII)
293 $ascii .= $var{$c};
294 break;
295
296 case (($ord_var_c & 0xE0) == 0xC0):
297 // characters U-00000080 - U-000007FF, mask 110XXXXX
298 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
299 $char = pack('C*', $ord_var_c, ord($var{$c + 1}));
300 $c += 1;
301 $utf16 = $this->utf82utf16($char);
302 $ascii .= sprintf('\u%04s', bin2hex($utf16));
303 break;
304
305 case (($ord_var_c & 0xF0) == 0xE0):
306 // characters U-00000800 - U-0000FFFF, mask 1110XXXX
307 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
308 $char = pack('C*', $ord_var_c,
309 ord($var{$c + 1}),
310 ord($var{$c + 2}));
311 $c += 2;
312 $utf16 = $this->utf82utf16($char);
313 $ascii .= sprintf('\u%04s', bin2hex($utf16));
314 break;
315
316 case (($ord_var_c & 0xF8) == 0xF0):
317 // characters U-00010000 - U-001FFFFF, mask 11110XXX
318 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
319 $char = pack('C*', $ord_var_c,
320 ord($var{$c + 1}),
321 ord($var{$c + 2}),
322 ord($var{$c + 3}));
323 $c += 3;
324 $utf16 = $this->utf82utf16($char);
325 $ascii .= sprintf('\u%04s', bin2hex($utf16));
326 break;
327
328 case (($ord_var_c & 0xFC) == 0xF8):
329 // characters U-00200000 - U-03FFFFFF, mask 111110XX
330 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
331 $char = pack('C*', $ord_var_c,
332 ord($var{$c + 1}),
333 ord($var{$c + 2}),
334 ord($var{$c + 3}),
335 ord($var{$c + 4}));
336 $c += 4;
337 $utf16 = $this->utf82utf16($char);
338 $ascii .= sprintf('\u%04s', bin2hex($utf16));
339 break;
340
341 case (($ord_var_c & 0xFE) == 0xFC):
342 // characters U-04000000 - U-7FFFFFFF, mask 1111110X
343 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
344 $char = pack('C*', $ord_var_c,
345 ord($var{$c + 1}),
346 ord($var{$c + 2}),
347 ord($var{$c + 3}),
348 ord($var{$c + 4}),
349 ord($var{$c + 5}));
350 $c += 5;
351 $utf16 = $this->utf82utf16($char);
352 $ascii .= sprintf('\u%04s', bin2hex($utf16));
353 break;
354 }
355 }
356
357 return '"'.$ascii.'"';
358
359 case 'array':
360 /*
361 * As per JSON spec if any array key is not an integer
362 * we must treat the the whole array as an object. We
363 * also try to catch a sparsely populated associative
364 * array with numeric keys here because some JS engines
365 * will create an array with empty indexes up to
366 * max_index which can cause memory issues and because
367 * the keys, which may be relevant, will be remapped
368 * otherwise.
369 *
370 * As per the ECMA and JSON specification an object may
371 * have any string as a property. Unfortunately due to
372 * a hole in the ECMA specification if the key is a
373 * ECMA reserved word or starts with a digit the
374 * parameter is only accessible using ECMAScript's
375 * bracket notation.
376 */
377
378 // treat as a JSON object
379 if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
380 $properties = array_map(array($this, 'name_value'),
381 array_keys($var),
382 array_values($var));
383
384 foreach($properties as $property) {
385 if(Services_JSON::isError($property)) {
386 return $property;
387 }
388 }
389
390 return '{' . join(',', $properties) . '}';
391 }
392
393 // treat it like a regular array
394 $elements = array_map(array($this, 'encode'), $var);
395
396 foreach($elements as $element) {
397 if(Services_JSON::isError($element)) {
398 return $element;
399 }
400 }
401
402 return '[' . join(',', $elements) . ']';
403
404 case 'object':
405 $vars = get_object_vars($var);
406
407 $properties = array_map(array($this, 'name_value'),
408 array_keys($vars),
409 array_values($vars));
410
411 foreach($properties as $property) {
412 if(Services_JSON::isError($property)) {
413 return $property;
414 }
415 }
416
417 return '{' . join(',', $properties) . '}';
418
419 default:
420 return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
421 ? 'null'
422 : new Services_JSON_Error(gettype($var)." can not be encoded as JSON string");
423 }
424 }
425
426 /**
427 * array-walking function for use in generating JSON-formatted name-value pairs
428 *
429 * @param string $name name of key to use
430 * @param mixed $value reference to an array element to be encoded
431 *
432 * @return string JSON-formatted name-value pair, like '"name":value'
433 * @access private
434 */
435 function name_value($name, $value)
436 {
437 $encoded_value = $this->encode($value);
438
439 if(Services_JSON::isError($encoded_value)) {
440 return $encoded_value;
441 }
442
443 return $this->encode(strval($name)) . ':' . $encoded_value;
444 }
445
446 /**
447 * reduce a string by removing leading and trailing comments and whitespace
448 *
449 * @param $str string string value to strip of comments and whitespace
450 *
451 * @return string string value stripped of comments and whitespace
452 * @access private
453 */
454 function reduce_string($str)
455 {
456 $str = preg_replace(array(
457
458 // eliminate single line comments in '// ...' form
459 '#^\s*//(.+)$#m',
460
461 // eliminate multi-line comments in '/* ... */' form, at start of string
462 '#^\s*/\*(.+)\*/#Us',
463
464 // eliminate multi-line comments in '/* ... */' form, at end of string
465 '#/\*(.+)\*/\s*$#Us'
466
467 ), '', $str);
468
469 // eliminate extraneous space
470 return trim($str);
471 }
472
473 /**
474 * decodes a JSON string into appropriate variable
475 *
476 * @param string $str JSON-formatted string
477 *
478 * @return mixed number, boolean, string, array, or object
479 * corresponding to given JSON input string.
480 * See argument 1 to Services_JSON() above for object-output behavior.
481 * Note that decode() always returns strings
482 * in ASCII or UTF-8 format!
483 * @access public
484 */
485 function decode($str)
486 {
487 $str = $this->reduce_string($str);
488
489 switch (strtolower($str)) {
490 case 'true':
491 return true;
492
493 case 'false':
494 return false;
495
496 case 'null':
497 return null;
498
499 default:
500 $m = array();
501
502 if (is_numeric($str)) {
503 // Lookie-loo, it's a number
504
505 // This would work on its own, but I'm trying to be
506 // good about returning integers where appropriate:
507 // return (float)$str;
508
509 // Return float or int, as appropriate
510 return ((float)$str == (integer)$str)
511 ? (integer)$str
512 : (float)$str;
513
514 } elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
515 // STRINGS RETURNED IN UTF-8 FORMAT
516 $delim = substr($str, 0, 1);
517 $chrs = substr($str, 1, -1);
518 $utf8 = '';
519 $strlen_chrs = strlen($chrs);
520
521 for ($c = 0; $c < $strlen_chrs; ++$c) {
522
523 $substr_chrs_c_2 = substr($chrs, $c, 2);
524 $ord_chrs_c = ord($chrs{$c});
525
526 switch (true) {
527 case $substr_chrs_c_2 == '\b':
528 $utf8 .= chr(0x08);
529 ++$c;
530 break;
531 case $substr_chrs_c_2 == '\t':
532 $utf8 .= chr(0x09);
533 ++$c;
534 break;
535 case $substr_chrs_c_2 == '\n':
536 $utf8 .= chr(0x0A);
537 ++$c;
538 break;
539 case $substr_chrs_c_2 == '\f':
540 $utf8 .= chr(0x0C);
541 ++$c;
542 break;
543 case $substr_chrs_c_2 == '\r':
544 $utf8 .= chr(0x0D);
545 ++$c;
546 break;
547
548 case $substr_chrs_c_2 == '\\"':
549 case $substr_chrs_c_2 == '\\\'':
550 case $substr_chrs_c_2 == '\\\\':
551 case $substr_chrs_c_2 == '\\/':
552 if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
553 ($delim == "'" && $substr_chrs_c_2 != '\\"')) {
554 $utf8 .= $chrs{++$c};
555 }
556 break;
557
558 case preg_match('/\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
559 // single, escaped unicode character
560 $utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
561 . chr(hexdec(substr($chrs, ($c + 4), 2)));
562 $utf8 .= $this->utf162utf8($utf16);
563 $c += 5;
564 break;
565
566 case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
567 $utf8 .= $chrs{$c};
568 break;
569
570 case ($ord_chrs_c & 0xE0) == 0xC0:
571 // characters U-00000080 - U-000007FF, mask 110XXXXX
572 //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
573 $utf8 .= substr($chrs, $c, 2);
574 ++$c;
575 break;
576
577 case ($ord_chrs_c & 0xF0) == 0xE0:
578 // characters U-00000800 - U-0000FFFF, mask 1110XXXX
579 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
580 $utf8 .= substr($chrs, $c, 3);
581 $c += 2;
582 break;
583
584 case ($ord_chrs_c & 0xF8) == 0xF0:
585 // characters U-00010000 - U-001FFFFF, mask 11110XXX
586 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
587 $utf8 .= substr($chrs, $c, 4);
588 $c += 3;
589 break;
590
591 case ($ord_chrs_c & 0xFC) == 0xF8:
592 // characters U-00200000 - U-03FFFFFF, mask 111110XX
593 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
594 $utf8 .= substr($chrs, $c, 5);
595 $c += 4;
596 break;
597
598 case ($ord_chrs_c & 0xFE) == 0xFC:
599 // characters U-04000000 - U-7FFFFFFF, mask 1111110X
600 // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
601 $utf8 .= substr($chrs, $c, 6);
602 $c += 5;
603 break;
604
605 }
606
607 }
608
609 return $utf8;
610
611 } elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
612 // array, or object notation
613
614 if ($str{0} == '[') {
615 $stk = array(SERVICES_JSON_IN_ARR);
616 $arr = array();
617 } else {
618 if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
619 $stk = array(SERVICES_JSON_IN_OBJ);
620 $obj = array();
621 } else {
622 $stk = array(SERVICES_JSON_IN_OBJ);
623 $obj = new stdClass();
624 }
625 }
626
627 array_push($stk, array('what' => SERVICES_JSON_SLICE,
628 'where' => 0,
629 'delim' => false));
630
631 $chrs = substr($str, 1, -1);
632 $chrs = $this->reduce_string($chrs);
633
634 if ($chrs == '') {
635 if (reset($stk) == SERVICES_JSON_IN_ARR) {
636 return $arr;
637
638 } else {
639 return $obj;
640
641 }
642 }
643
644 //print("\nparsing {$chrs}\n");
645
646 $strlen_chrs = strlen($chrs);
647
648 for ($c = 0; $c <= $strlen_chrs; ++$c) {
649
650 $top = end($stk);
651 $substr_chrs_c_2 = substr($chrs, $c, 2);
652
653 if (($c == $strlen_chrs) || (($chrs{$c} == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
654 // found a comma that is not inside a string, array, etc.,
655 // OR we've reached the end of the character list
656 $slice = substr($chrs, $top['where'], ($c - $top['where']));
657 array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
658 //print("Found split at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
659
660 if (reset($stk) == SERVICES_JSON_IN_ARR) {
661 // we are in an array, so just push an element onto the stack
662 array_push($arr, $this->decode($slice));
663
664 } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
665 // we are in an object, so figure
666 // out the property name and set an
667 // element in an associative array,
668 // for now
669 $parts = array();
670
671 if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
672 // "name":value pair
673 $key = $this->decode($parts[1]);
674 $val = $this->decode($parts[2]);
675
676 if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
677 $obj[$key] = $val;
678 } else {
679 $obj->$key = $val;
680 }
681 } elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
682 // name:value pair, where name is unquoted
683 $key = $parts[1];
684 $val = $this->decode($parts[2]);
685
686 if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
687 $obj[$key] = $val;
688 } else {
689 $obj->$key = $val;
690 }
691 }
692
693 }
694
695 } elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
696 // found a quote, and we are not inside a string
697 array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
698 //print("Found start of string at {$c}\n");
699
700 } elseif (($chrs{$c} == $top['delim']) &&
701 ($top['what'] == SERVICES_JSON_IN_STR) &&
702 ((strlen(substr($chrs, 0, $c)) - strlen(rtrim(substr($chrs, 0, $c), '\\'))) % 2 != 1)) {
703 // found a quote, we're in a string, and it's not escaped
704 // we know that it's not escaped becase there is _not_ an
705 // odd number of backslashes at the end of the string so far
706 array_pop($stk);
707 //print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");
708
709 } elseif (($chrs{$c} == '[') &&
710 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
711 // found a left-bracket, and we are in an array, object, or slice
712 array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
713 //print("Found start of array at {$c}\n");
714
715 } elseif (($chrs{$c} == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
716 // found a right-bracket, and we're in an array
717 array_pop($stk);
718 //print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
719
720 } elseif (($chrs{$c} == '{') &&
721 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
722 // found a left-brace, and we are in an array, object, or slice
723 array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
724 //print("Found start of object at {$c}\n");
725
726 } elseif (($chrs{$c} == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
727 // found a right-brace, and we're in an object
728 array_pop($stk);
729 //print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
730
731 } elseif (($substr_chrs_c_2 == '/*') &&
732 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
733 // found a comment start, and we are in an array, object, or slice
734 array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
735 $c++;
736 //print("Found start of comment at {$c}\n");
737
738 } elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
739 // found a comment end, and we're in one now
740 array_pop($stk);
741 $c++;
742
743 for ($i = $top['where']; $i <= $c; ++$i)
744 $chrs = substr_replace($chrs, ' ', $i, 1);
745
746 //print("Found end of comment at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
747
748 }
749
750 }
751
752 if (reset($stk) == SERVICES_JSON_IN_ARR) {
753 return $arr;
754
755 } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
756 return $obj;
757
758 }
759
760 }
761 }
762 }
763
764 /**
765 * @todo Ultimately, this should just call PEAR::isError()
766 */
767 function isError($data, $code = null)
768 {
769 if (class_exists('pear')) {
770 return PEAR::isError($data, $code);
771 } elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
772 is_subclass_of($data, 'services_json_error'))) {
773 return true;
774 }
775
776 return false;
777 }
778}
779
780if (class_exists('PEAR_Error')) {
781
782 class Services_JSON_Error extends PEAR_Error
783 {
784 function Services_JSON_Error($message = 'unknown error', $code = null,
785 $mode = null, $options = null, $userinfo = null)
786 {
787 parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
788 }
789 }
790
791} else {
792
793 /**
794 * @todo Ultimately, this class shall be descended from PEAR_Error
795 */
796 class Services_JSON_Error
797 {
798 function Services_JSON_Error($message = 'unknown error', $code = null,
799 $mode = null, $options = null, $userinfo = null)
800 {
801
802 }
803 }
804
805}
806endif;
807
808?>
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