|
@@ -0,0 +1,806 @@
|
|
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
|
+ */
|
|
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
|
+?>
|