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<?php
2
/**
3
 * *** BEGIN LICENSE BLOCK *****
4
 *
5
 * This file is part of FirePHP (http://www.firephp.org/).
6
 *
7
 * Software License Agreement (New BSD License)
8
 *
9
 * Copyright (c) 2006-2009, Christoph Dorn
10
 * All rights reserved.
11
 *
12
 * Redistribution and use in source and binary forms, with or without modification,
13
 * are permitted provided that the following conditions are met:
14
 *
15
 *     * Redistributions of source code must retain the above copyright notice,
16
 *       this list of conditions and the following disclaimer.
17
 *
18
 *     * Redistributions in binary form must reproduce the above copyright notice,
19
 *       this list of conditions and the following disclaimer in the documentation
20
 *       and/or other materials provided with the distribution.
21
 *
22
 *     * Neither the name of Christoph Dorn nor the names of its
23
 *       contributors may be used to endorse or promote products derived from this
24
 *       software without specific prior written permission.
25
 *
26
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
27
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
28
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
29
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
30
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
31
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
32
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
33
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36
 *
37
 * ***** END LICENSE BLOCK *****
38
 *
39
 * @copyright   Copyright (C) 2007-2009 Christoph Dorn
40
 * @author      Christoph Dorn <christoph@christophdorn.com>
41
 * @license     http://www.opensource.org/licenses/bsd-license.php
42
 * @package     FirePHP
43
 */
44
 
45
 
46
/**
47
 * Sends the given data to the FirePHP Firefox Extension.
48
 * The data can be displayed in the Firebug Console or in the
49
 * "Server" request tab.
50
 *
51
 * For more information see: http://www.firephp.org/
52
 *
53
 * @copyright   Copyright (C) 2007-2009 Christoph Dorn
54
 * @author      Christoph Dorn <christoph@christophdorn.com>
55
 * @license     http://www.opensource.org/licenses/bsd-license.php
56
 * @package     FirePHP
57
 */
58
class FirePHP {
59
 
60
  /**
61
   * FirePHP version
62
   *
63
   * @var string
64
   */
65
  const VERSION = '0.3';
66
 
67
  /**
68
   * Firebug LOG level
69
   *
70
   * Logs a message to firebug console.
71
   *
72
   * @var string
73
   */
74
  const LOG = 'LOG';
75
 
76
  /**
77
   * Firebug INFO level
78
   *
79
   * Logs a message to firebug console and displays an info icon before the message.
80
   *
81
   * @var string
82
   */
83
  const INFO = 'INFO';
84
 
85
  /**
86
   * Firebug WARN level
87
   *
88
   * Logs a message to firebug console, displays an warning icon before the message and colors the line turquoise.
89
   *
90
   * @var string
91
   */
92
  const WARN = 'WARN';
93
 
94
  /**
95
   * Firebug ERROR level
96
   *
97
   * Logs a message to firebug console, displays an error icon before the message and colors the line yellow. Also increments the firebug error count.
98
   *
99
   * @var string
100
   */
101
  const ERROR = 'ERROR';
102
 
103
  /**
104
   * Dumps a variable to firebug's server panel
105
   *
106
   * @var string
107
   */
108
  const DUMP = 'DUMP';
109
 
110
  /**
111
   * Displays a stack trace in firebug console
112
   *
113
   * @var string
114
   */
115
  const TRACE = 'TRACE';
116
 
117
  /**
118
   * Displays an exception in firebug console
119
   *
120
   * Increments the firebug error count.
121
   *
122
   * @var string
123
   */
124
  const EXCEPTION = 'EXCEPTION';
125
 
126
  /**
127
   * Displays an table in firebug console
128
   *
129
   * @var string
130
   */
131
  const TABLE = 'TABLE';
132
 
133
  /**
134
   * Starts a group in firebug console
135
   *
136
   * @var string
137
   */
138
  const GROUP_START = 'GROUP_START';
139
 
140
  /**
141
   * Ends a group in firebug console
142
   *
143
   * @var string
144
   */
145
  const GROUP_END = 'GROUP_END';
146
 
147
  /**
148
   * Singleton instance of FirePHP
149
   *
150
   * @var FirePHP
151
   */
152
  protected static $instance = null;
153
 
154
  /**
155
   * Flag whether we are logging from within the exception handler
156
   *
157
   * @var boolean
158
   */
159
  protected $inExceptionHandler = false;
160
 
161
  /**
162
   * Flag whether to throw PHP errors that have been converted to ErrorExceptions
163
   *
164
   * @var boolean
165
   */
166
  protected $throwErrorExceptions = true;
167
 
168
  /**
169
   * Flag whether to convert PHP assertion errors to Exceptions
170
   *
171
   * @var boolean
172
   */
173
  protected $convertAssertionErrorsToExceptions = true;
174
 
175
  /**
176
   * Flag whether to throw PHP assertion errors that have been converted to Exceptions
177
   *
178
   * @var boolean
179
   */
180
  protected $throwAssertionExceptions = false;
181
 
182
  /**
183
   * Wildfire protocol message index
184
   *
185
   * @var int
186
   */
187
  protected $messageIndex = 1;
188
 
189
  /**
190
   * Options for the library
191
   *
192
   * @var array
193
   */
194
  protected $options = array('maxObjectDepth' => 10,
195
                             'maxArrayDepth' => 20,
196
                             'useNativeJsonEncode' => true,
197
                             'includeLineNumbers' => true);
198
 
199
  /**
200
   * Filters used to exclude object members when encoding
201
   *
202
   * @var array
203
   */
204
  protected $objectFilters = array();
205
 
206
  /**
207
   * A stack of objects used to detect recursion during object encoding
208
   *
209
   * @var object
210
   */
211
  protected $objectStack = array();
212
 
213
  /**
214
   * Flag to enable/disable logging
215
   *
216
   * @var boolean
217
   */
218
  protected $enabled = true;
219
 
220
  /**
221
   * The object constructor
222
   */
223
  function __construct() {
224
  }
225
 
226
  /**
227
   * When the object gets serialized only include specific object members.
228
   *
229
   * @return array
230
   */
231
  public function __sleep() {
232
    return array('options','objectFilters','enabled');
233
  }
234
 
235
  /**
236
   * Gets singleton instance of FirePHP
237
   *
238
   * @param boolean $AutoCreate
239
   * @return FirePHP
240
   */
241
  public static function getInstance($AutoCreate=false) {
242
    if($AutoCreate===true && !self::$instance) {
243
      self::init();
244
    }
245
    return self::$instance;
246
  }
247
 
248
  /**
249
   * Creates FirePHP object and stores it for singleton access
250
   *
251
   * @return FirePHP
252
   */
253
  public static function init() {
254
    return self::$instance = new self();
255
  }
256
 
257
  /**
258
   * Enable and disable logging to Firebug
259
   *
260
   * @param boolean $Enabled TRUE to enable, FALSE to disable
261
   * @return void
262
   */
263
  public function setEnabled($Enabled) {
264
    $this->enabled = $Enabled;
265
  }
266
 
267
  /**
268
   * Check if logging is enabled
269
   *
270
   * @return boolean TRUE if enabled
271
   */
272
  public function getEnabled() {
273
    return $this->enabled;
274
  }
275
 
276
  /**
277
   * Specify a filter to be used when encoding an object
278
   *
279
   * Filters are used to exclude object members.
280
   *
281
   * @param string $Class The class name of the object
282
   * @param array $Filter An array of members to exclude
283
   * @return void
284
   */
285
  public function setObjectFilter($Class, $Filter) {
286
    $this->objectFilters[strtolower($Class)] = $Filter;
287
  }
288
 
289
  /**
290
   * Set some options for the library
291
   *
292
   * Options:
293
   *  - maxObjectDepth: The maximum depth to traverse objects (default: 10)
294
   *  - maxArrayDepth: The maximum depth to traverse arrays (default: 20)
295
   *  - useNativeJsonEncode: If true will use json_encode() (default: true)
296
   *  - includeLineNumbers: If true will include line numbers and filenames (default: true)
297
   *
298
   * @param array $Options The options to be set
299
   * @return void
300
   */
301
  public function setOptions($Options) {
302
    $this->options = array_merge($this->options,$Options);
303
  }
304
 
305
  /**
306
   * Get options from the library
307
   *
308
   * @return array The currently set options
309
   */
310
  public function getOptions() {
311
    return $this->options;
312
  }
313
 
314
  /**
315
   * Register FirePHP as your error handler
316
   *
317
   * Will throw exceptions for each php error.
318
   *
319
   * @return mixed Returns a string containing the previously defined error handler (if any)
320
   */
321
  public function registerErrorHandler($throwErrorExceptions=true)
322
  {
323
    //NOTE: The following errors will not be caught by this error handler:
324
    //      E_ERROR, E_PARSE, E_CORE_ERROR,
325
    //      E_CORE_WARNING, E_COMPILE_ERROR,
326
    //      E_COMPILE_WARNING, E_STRICT
327
 
328
    $this->throwErrorExceptions = $throwErrorExceptions;
329
 
330
    return set_error_handler(array($this,'errorHandler'));
331
  }
332
 
333
  /**
334
   * FirePHP's error handler
335
   *
336
   * Throws exception for each php error that will occur.
337
   *
338
   * @param int $errno
339
   * @param string $errstr
340
   * @param string $errfile
341
   * @param int $errline
342
   * @param array $errcontext
343
   */
344
  public function errorHandler($errno, $errstr, $errfile, $errline, $errcontext)
345
  {
346
    // Don't throw exception if error reporting is switched off
347
    if (error_reporting() == 0) {
348
      return;
349
    }
350
    // Only throw exceptions for errors we are asking for
351
    if (error_reporting() & $errno) {
352
 
353
      $exception = new ErrorException($errstr, 0, $errno, $errfile, $errline);
354
      if($this->throwErrorExceptions) {
355
        throw $exception;
356
      } else {
357
        $this->fb($exception);
358
      }
359
    }
360
  }
361
 
362
  /**
363
   * Register FirePHP as your exception handler
364
   *
365
   * @return mixed Returns the name of the previously defined exception handler,
366
   *               or NULL on error.
367
   *               If no previous handler was defined, NULL is also returned.
368
   */
369
  public function registerExceptionHandler()
370
  {
371
    return set_exception_handler(array($this,'exceptionHandler'));
372
  }
373
 
374
  /**
375
   * FirePHP's exception handler
376
   *
377
   * Logs all exceptions to your firebug console and then stops the script.
378
   *
379
   * @param Exception $Exception
380
   * @throws Exception
381
   */
382
  function exceptionHandler($Exception) {
383
 
384
    $this->inExceptionHandler = true;
385
 
386
    header('HTTP/1.1 500 Internal Server Error');
387
 
388
    $this->fb($Exception);
389
 
390
    $this->inExceptionHandler = false;
391
  }
392
 
393
  /**
394
   * Register FirePHP driver as your assert callback
395
   *
396
   * @param boolean $convertAssertionErrorsToExceptions
397
   * @param boolean $throwAssertionExceptions
398
   * @return mixed Returns the original setting or FALSE on errors
399
   */
400
  public function registerAssertionHandler($convertAssertionErrorsToExceptions=true, $throwAssertionExceptions=false)
401
  {
402
    $this->convertAssertionErrorsToExceptions = $convertAssertionErrorsToExceptions;
403
    $this->throwAssertionExceptions = $throwAssertionExceptions;
404
 
405
    if($throwAssertionExceptions && !$convertAssertionErrorsToExceptions) {
406
      throw $this->newException('Cannot throw assertion exceptions as assertion errors are not being converted to exceptions!');
407
    }
408
 
409
    return assert_options(ASSERT_CALLBACK, array($this, 'assertionHandler'));
410
  }
411
 
412
  /**
413
   * FirePHP's assertion handler
414
   *
415
   * Logs all assertions to your firebug console and then stops the script.
416
   *
417
   * @param string $file File source of assertion
418
   * @param int    $line Line source of assertion
419
   * @param mixed  $code Assertion code
420
   */
421
  public function assertionHandler($file, $line, $code)
422
  {
423
 
424
    if($this->convertAssertionErrorsToExceptions) {
425
 
426
      $exception = new ErrorException('Assertion Failed - Code[ '.$code.' ]', 0, null, $file, $line);
427
 
428
      if($this->throwAssertionExceptions) {
429
        throw $exception;
430
      } else {
431
        $this->fb($exception);
432
      }
433
 
434
    } else {
435
 
436
      $this->fb($code, 'Assertion Failed', FirePHP::ERROR, array('File'=>$file,'Line'=>$line));
437
 
438
    }
439
  }
440
 
441
  /**
442
   * Set custom processor url for FirePHP
443
   *
444
   * @param string $URL
445
   */
446
  public function setProcessorUrl($URL)
447
  {
448
    $this->setHeader('X-FirePHP-ProcessorURL', $URL);
449
  }
450
 
451
  /**
452
   * Set custom renderer url for FirePHP
453
   *
454
   * @param string $URL
455
   */
456
  public function setRendererUrl($URL)
457
  {
458
    $this->setHeader('X-FirePHP-RendererURL', $URL);
459
  }
460
 
461
  /**
462
   * Start a group for following messages.
463
   *
464
   * Options:
465
   *   Collapsed: [true|false]
466
   *   Color:     [#RRGGBB|ColorName]
467
   *
468
   * @param string $Name
469
   * @param array $Options OPTIONAL Instructions on how to log the group
470
   * @return true
471
   * @throws Exception
472
   */
473
  public function group($Name, $Options=null) {
474
 
475
    if(!$Name) {
476
      throw $this->newException('You must specify a label for the group!');
477
    }
478
 
479
    if($Options) {
480
      if(!is_array($Options)) {
481
        throw $this->newException('Options must be defined as an array!');
482
      }
483
      if(array_key_exists('Collapsed', $Options)) {
484
        $Options['Collapsed'] = ($Options['Collapsed'])?'true':'false';
485
      }
486
    }
487
 
488
    return $this->fb(null, $Name, FirePHP::GROUP_START, $Options);
489
  }
490
 
491
  /**
492
   * Ends a group you have started before
493
   *
494
   * @return true
495
   * @throws Exception
496
   */
497
  public function groupEnd() {
498
    return $this->fb(null, null, FirePHP::GROUP_END);
499
  }
500
 
501
  /**
502
   * Log object with label to firebug console
503
   *
504
   * @see FirePHP::LOG
505
   * @param mixes $Object
506
   * @param string $Label
507
   * @return true
508
   * @throws Exception
509
   */
510
  public function log($Object, $Label=null) {
511
    return $this->fb($Object, $Label, FirePHP::LOG);
512
  }
513
 
514
  /**
515
   * Log object with label to firebug console
516
   *
517
   * @see FirePHP::INFO
518
   * @param mixes $Object
519
   * @param string $Label
520
   * @return true
521
   * @throws Exception
522
   */
523
  public function info($Object, $Label=null) {
524
    return $this->fb($Object, $Label, FirePHP::INFO);
525
  }
526
 
527
  /**
528
   * Log object with label to firebug console
529
   *
530
   * @see FirePHP::WARN
531
   * @param mixes $Object
532
   * @param string $Label
533
   * @return true
534
   * @throws Exception
535
   */
536
  public function warn($Object, $Label=null) {
537
    return $this->fb($Object, $Label, FirePHP::WARN);
538
  }
539
 
540
  /**
541
   * Log object with label to firebug console
542
   *
543
   * @see FirePHP::ERROR
544
   * @param mixes $Object
545
   * @param string $Label
546
   * @return true
547
   * @throws Exception
548
   */
549
  public function error($Object, $Label=null) {
550
    return $this->fb($Object, $Label, FirePHP::ERROR);
551
  }
552
 
553
  /**
554
   * Dumps key and variable to firebug server panel
555
   *
556
   * @see FirePHP::DUMP
557
   * @param string $Key
558
   * @param mixed $Variable
559
   * @return true
560
   * @throws Exception
561
   */
562
  public function dump($Key, $Variable) {
563
    return $this->fb($Variable, $Key, FirePHP::DUMP);
564
  }
565
 
566
  /**
567
   * Log a trace in the firebug console
568
   *
569
   * @see FirePHP::TRACE
570
   * @param string $Label
571
   * @return true
572
   * @throws Exception
573
   */
574
  public function trace($Label) {
575
    return $this->fb($Label, FirePHP::TRACE);
576
  }
577
 
578
  /**
579
   * Log a table in the firebug console
580
   *
581
   * @see FirePHP::TABLE
582
   * @param string $Label
583
   * @param string $Table
584
   * @return true
585
   * @throws Exception
586
   */
587
  public function table($Label, $Table) {
588
    return $this->fb($Table, $Label, FirePHP::TABLE);
589
  }
590
 
591
  /**
592
   * Check if FirePHP is installed on client
593
   *
594
   * @return boolean
595
   */
596
  public function detectClientExtension() {
597
    /* Check if FirePHP is installed on client */
598
    if(!@preg_match_all('/\sFirePHP\/([\.|\d]*)\s?/si',$this->getUserAgent(),$m) ||
599
       !version_compare($m[1][0],'0.0.6','>=')) {
600
      return false;
601
    }
602
    return true;
603
  }
604
 
605
  /**
606
   * Log varible to Firebug
607
   *
608
   * @see http://www.firephp.org/Wiki/Reference/Fb
609
   * @param mixed $Object The variable to be logged
610
   * @return true Return TRUE if message was added to headers, FALSE otherwise
611
   * @throws Exception
612
   */
613
  public function fb($Object) {
614
 
615
    if(!$this->enabled) {
616
      return false;
617
    }
618
 
619
    if (headers_sent($filename, $linenum)) {
620
      // If we are logging from within the exception handler we cannot throw another exception
621
      if($this->inExceptionHandler) {
622
        // Simply echo the error out to the page
623
        echo '<div style="border: 2px solid red; font-family: Arial; font-size: 12px; background-color: lightgray; padding: 5px;"><span style="color: red; font-weight: bold;">FirePHP ERROR:</span> Headers already sent in <b>'.$filename.'</b> on line <b>'.$linenum.'</b>. Cannot send log data to FirePHP. You must have Output Buffering enabled via ob_start() or output_buffering ini directive.</div>';
624
      } else {
625
        throw $this->newException('Headers already sent in '.$filename.' on line '.$linenum.'. Cannot send log data to FirePHP. You must have Output Buffering enabled via ob_start() or output_buffering ini directive.');
626
      }
627
    }
628
 
629
    $Type = null;
630
    $Label = null;
631
    $Options = array();
632
 
633
    if(func_num_args()==1) {
634
    } else
635
    if(func_num_args()==2) {
636
      switch(func_get_arg(1)) {
637
        case self::LOG:
638
        case self::INFO:
639
        case self::WARN:
640
        case self::ERROR:
641
        case self::DUMP:
642
        case self::TRACE:
643
        case self::EXCEPTION:
644
        case self::TABLE:
645
        case self::GROUP_START:
646
        case self::GROUP_END:
647
          $Type = func_get_arg(1);
648
          break;
649
        default:
650
          $Label = func_get_arg(1);
651
          break;
652
      }
653
    } else
654
    if(func_num_args()==3) {
655
      $Type = func_get_arg(2);
656
      $Label = func_get_arg(1);
657
    } else
658
    if(func_num_args()==4) {
659
      $Type = func_get_arg(2);
660
      $Label = func_get_arg(1);
661
      $Options = func_get_arg(3);
662
    } else {
663
      throw $this->newException('Wrong number of arguments to fb() function!');
664
    }
665
 
666
 
667
    if(!$this->detectClientExtension()) {
668
      return false;
669
    }
670
 
671
    $meta = array();
672
    $skipFinalObjectEncode = false;
673
 
674
    if($Object instanceof Exception) {
675
 
676
      $meta['file'] = $this->_escapeTraceFile($Object->getFile());
677
      $meta['line'] = $Object->getLine();
678
 
679
      $trace = $Object->getTrace();
680
      if($Object instanceof ErrorException
681
         && isset($trace[0]['function'])
682
         && $trace[0]['function']=='errorHandler'
683
         && isset($trace[0]['class'])
684
         && $trace[0]['class']=='FirePHP') {
685
 
686
        $severity = false;
687
        switch($Object->getSeverity()) {
688
          case E_WARNING: $severity = 'E_WARNING'; break;
689
          case E_NOTICE: $severity = 'E_NOTICE'; break;
690
          case E_USER_ERROR: $severity = 'E_USER_ERROR'; break;
691
          case E_USER_WARNING: $severity = 'E_USER_WARNING'; break;
692
          case E_USER_NOTICE: $severity = 'E_USER_NOTICE'; break;
693
          case E_STRICT: $severity = 'E_STRICT'; break;
694
          case E_RECOVERABLE_ERROR: $severity = 'E_RECOVERABLE_ERROR'; break;
695
          case E_DEPRECATED: $severity = 'E_DEPRECATED'; break;
696
          case E_USER_DEPRECATED: $severity = 'E_USER_DEPRECATED'; break;
697
        }
698
 
699
        $Object = array('Class'=>get_class($Object),
700
                        'Message'=>$severity.': '.$Object->getMessage(),
701
                        'File'=>$this->_escapeTraceFile($Object->getFile()),
702
                        'Line'=>$Object->getLine(),
703
                        'Type'=>'trigger',
704
                        'Trace'=>$this->_escapeTrace(array_splice($trace,2)));
705
        $skipFinalObjectEncode = true;
706
      } else {
707
        $Object = array('Class'=>get_class($Object),
708
                        'Message'=>$Object->getMessage(),
709
                        'File'=>$this->_escapeTraceFile($Object->getFile()),
710
                        'Line'=>$Object->getLine(),
711
                        'Type'=>'throw',
712
                        'Trace'=>$this->_escapeTrace($trace));
713
        $skipFinalObjectEncode = true;
714
      }
715
      $Type = self::EXCEPTION;
716
 
717
    } else
718
    if($Type==self::TRACE) {
719
 
720
      $trace = debug_backtrace();
721
      if(!$trace) return false;
722
      for( $i=0 ; $i<sizeof($trace) ; $i++ ) {
723
 
724
        if(isset($trace[$i]['class'])
725
           && isset($trace[$i]['file'])
726
           && ($trace[$i]['class']=='FirePHP'
727
               || $trace[$i]['class']=='FB')
728
           && (substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php'
729
               || substr($this->_standardizePath($trace[$i]['file']),-29,29)=='FirePHPCore/FirePHP.class.php')) {
730
          /* Skip - FB::trace(), FB::send(), $firephp->trace(), $firephp->fb() */
731
        } else
732
        if(isset($trace[$i]['class'])
733
           && isset($trace[$i+1]['file'])
734
           && $trace[$i]['class']=='FirePHP'
735
           && substr($this->_standardizePath($trace[$i+1]['file']),-18,18)=='FirePHPCore/fb.php') {
736
          /* Skip fb() */
737
        } else
738
        if($trace[$i]['function']=='fb'
739
           || $trace[$i]['function']=='trace'
740
           || $trace[$i]['function']=='send') {
741
          $Object = array('Class'=>isset($trace[$i]['class'])?$trace[$i]['class']:'',
742
                          'Type'=>isset($trace[$i]['type'])?$trace[$i]['type']:'',
743
                          'Function'=>isset($trace[$i]['function'])?$trace[$i]['function']:'',
744
                          'Message'=>$trace[$i]['args'][0],
745
                          'File'=>isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'',
746
                          'Line'=>isset($trace[$i]['line'])?$trace[$i]['line']:'',
747
                          'Args'=>isset($trace[$i]['args'])?$this->encodeObject($trace[$i]['args']):'',
748
                          'Trace'=>$this->_escapeTrace(array_splice($trace,$i+1)));
749
 
750
          $skipFinalObjectEncode = true;
751
          $meta['file'] = isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'';
752
          $meta['line'] = isset($trace[$i]['line'])?$trace[$i]['line']:'';
753
          break;
754
        }
755
      }
756
 
757
    } else
758
    if($Type==self::TABLE) {
759
 
760
      if(isset($Object[0]) && is_string($Object[0])) {
761
        $Object[1] = $this->encodeTable($Object[1]);
762
      } else {
763
        $Object = $this->encodeTable($Object);
764
      }
765
 
766
      $skipFinalObjectEncode = true;
767
 
768
    } else
769
    if($Type==self::GROUP_START) {
770
 
771
      if(!$Label) {
772
        throw $this->newException('You must specify a label for the group!');
773
      }
774
 
775
    } else {
776
      if($Type===null) {
777
        $Type = self::LOG;
778
      }
779
    }
780
 
781
    if($this->options['includeLineNumbers']) {
782
      if(!isset($meta['file']) || !isset($meta['line'])) {
783
 
784
        $trace = debug_backtrace();
785
        for( $i=0 ; $trace && $i<sizeof($trace) ; $i++ ) {
786
 
787
          if(isset($trace[$i]['class'])
788
             && isset($trace[$i]['file'])
789
             && ($trace[$i]['class']=='FirePHP'
790
                 || $trace[$i]['class']=='FB')
791
             && (substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php'
792
                 || substr($this->_standardizePath($trace[$i]['file']),-29,29)=='FirePHPCore/FirePHP.class.php')) {
793
            /* Skip - FB::trace(), FB::send(), $firephp->trace(), $firephp->fb() */
794
          } else
795
          if(isset($trace[$i]['class'])
796
             && isset($trace[$i+1]['file'])
797
             && $trace[$i]['class']=='FirePHP'
798
             && substr($this->_standardizePath($trace[$i+1]['file']),-18,18)=='FirePHPCore/fb.php') {
799
            /* Skip fb() */
800
          } else
801
          if(isset($trace[$i]['file'])
802
             && substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php') {
803
            /* Skip FB::fb() */
804
          } else {
805
            $meta['file'] = isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'';
806
            $meta['line'] = isset($trace[$i]['line'])?$trace[$i]['line']:'';
807
            break;
808
          }
809
        }
810
 
811
      }
812
    } else {
813
      unset($meta['file']);
814
      unset($meta['line']);
815
    }
816
 
817
  	$this->setHeader('X-Wf-Protocol-1','http://meta.wildfirehq.org/Protocol/JsonStream/0.2');
818
  	$this->setHeader('X-Wf-1-Plugin-1','http://meta.firephp.org/Wildfire/Plugin/FirePHP/Library-FirePHPCore/'.self::VERSION);
819
 
820
    $structure_index = 1;
821
    if($Type==self::DUMP) {
822
      $structure_index = 2;
823
    	$this->setHeader('X-Wf-1-Structure-2','http://meta.firephp.org/Wildfire/Structure/FirePHP/Dump/0.1');
824
    } else {
825
    	$this->setHeader('X-Wf-1-Structure-1','http://meta.firephp.org/Wildfire/Structure/FirePHP/FirebugConsole/0.1');
826
    }
827
 
828
    if($Type==self::DUMP) {
829
    	$msg = '{"'.$Label.'":'.$this->jsonEncode($Object, $skipFinalObjectEncode).'}';
830
    } else {
831
      $msg_meta = $Options;
832
      $msg_meta['Type'] = $Type;
833
      if($Label!==null) {
834
        $msg_meta['Label'] = $Label;
835
      }
836
      if(isset($meta['file']) && !isset($msg_meta['File'])) {
837
        $msg_meta['File'] = $meta['file'];
838
      }
839
      if(isset($meta['line']) && !isset($msg_meta['Line'])) {
840
        $msg_meta['Line'] = $meta['line'];
841
      }
842
    	$msg = '['.$this->jsonEncode($msg_meta).','.$this->jsonEncode($Object, $skipFinalObjectEncode).']';
843
    }
844
 
845
    $parts = explode("\n",chunk_split($msg, 5000, "\n"));
846
 
847
    for( $i=0 ; $i<count($parts) ; $i++) {
848
 
849
        $part = $parts[$i];
850
        if ($part) {
851
 
852
            if(count($parts)>2) {
853
              // Message needs to be split into multiple parts
854
              $this->setHeader('X-Wf-1-'.$structure_index.'-'.'1-'.$this->messageIndex,
855
                               (($i==0)?strlen($msg):'')
856
                               . '|' . $part . '|'
857
                               . (($i<count($parts)-2)?'\\':''));
858
            } else {
859
              $this->setHeader('X-Wf-1-'.$structure_index.'-'.'1-'.$this->messageIndex,
860
                               strlen($part) . '|' . $part . '|');
861
            }
862
 
863
            $this->messageIndex++;
864
 
865
            if ($this->messageIndex > 99999) {
866
                throw $this->newException('Maximum number (99,999) of messages reached!');
867
            }
868
        }
869
    }
870
 
871
  	$this->setHeader('X-Wf-1-Index',$this->messageIndex-1);
872
 
873
    return true;
874
  }
875
 
876
  /**
877
   * Standardizes path for windows systems.
878
   *
879
   * @param string $Path
880
   * @return string
881
   */
882
  protected function _standardizePath($Path) {
883
    return preg_replace('/\\\\+/','/',$Path);
884
  }
885
 
886
  /**
887
   * Escape trace path for windows systems
888
   *
889
   * @param array $Trace
890
   * @return array
891
   */
892
  protected function _escapeTrace($Trace) {
893
    if(!$Trace) return $Trace;
894
    for( $i=0 ; $i<sizeof($Trace) ; $i++ ) {
895
      if(isset($Trace[$i]['file'])) {
896
        $Trace[$i]['file'] = $this->_escapeTraceFile($Trace[$i]['file']);
897
      }
898
      if(isset($Trace[$i]['args'])) {
899
        $Trace[$i]['args'] = $this->encodeObject($Trace[$i]['args']);
900
      }
901
    }
902
    return $Trace;
903
  }
904
 
905
  /**
906
   * Escape file information of trace for windows systems
907
   *
908
   * @param string $File
909
   * @return string
910
   */
911
  protected function _escapeTraceFile($File) {
912
    /* Check if we have a windows filepath */
913
    if(strpos($File,'\\')) {
914
      /* First strip down to single \ */
915
 
916
      $file = preg_replace('/\\\\+/','\\',$File);
917
 
918
      return $file;
919
    }
920
    return $File;
921
  }
922
 
923
  /**
924
   * Send header
925
   *
926
   * @param string $Name
927
   * @param string_type $Value
928
   */
929
  protected function setHeader($Name, $Value) {
930
    return header($Name.': '.$Value);
931
  }
932
 
933
  /**
934
   * Get user agent
935
   *
936
   * @return string|false
937
   */
938
  protected function getUserAgent() {
939
    if(!isset($_SERVER['HTTP_USER_AGENT'])) return false;
940
    return $_SERVER['HTTP_USER_AGENT'];
941
  }
942
 
943
  /**
944
   * Returns a new exception
945
   *
946
   * @param string $Message
947
   * @return Exception
948
   */
949
  protected function newException($Message) {
950
    return new Exception($Message);
951
  }
952
 
953
  /**
954
   * Encode an object into a JSON string
955
   *
956
   * Uses PHP's jeson_encode() if available
957
   *
958
   * @param object $Object The object to be encoded
959
   * @return string The JSON string
960
   */
961
  public function jsonEncode($Object, $skipObjectEncode=false)
962
  {
963
    if(!$skipObjectEncode) {
964
      $Object = $this->encodeObject($Object);
965
    }
966
 
967
    if(function_exists('json_encode')
968
       && $this->options['useNativeJsonEncode']!=false) {
969
 
970
      return json_encode($Object);
971
    } else {
972
      return $this->json_encode($Object);
973
    }
974
  }
975
 
976
  /**
977
   * Encodes a table by encoding each row and column with encodeObject()
978
   *
979
   * @param array $Table The table to be encoded
980
   * @return array
981
   */
982
  protected function encodeTable($Table) {
983
 
984
    if(!$Table) return $Table;
985
 
986
    $new_table = array();
987
    foreach($Table as $row) {
988
 
989
      if(is_array($row)) {
990
        $new_row = array();
991
 
992
        foreach($row as $item) {
993
          $new_row[] = $this->encodeObject($item);
994
        }
995
 
996
        $new_table[] = $new_row;
997
      }
998
    }
999
 
1000
    return $new_table;
1001
  }
1002
 
1003
  /**
1004
   * Encodes an object including members with
1005
   * protected and private visibility
1006
   *
1007
   * @param Object $Object The object to be encoded
1008
   * @param int $Depth The current traversal depth
1009
   * @return array All members of the object
1010
   */
1011
  protected function encodeObject($Object, $ObjectDepth = 1, $ArrayDepth = 1)
1012
  {
1013
    $return = array();
1014
 
1015
    if (is_resource($Object)) {
1016
 
1017
      return '** '.(string)$Object.' **';
1018
 
1019
    } else
1020
    if (is_object($Object)) {
1021
 
1022
        if ($ObjectDepth > $this->options['maxObjectDepth']) {
1023
          return '** Max Object Depth ('.$this->options['maxObjectDepth'].') **';
1024
        }
1025
 
1026
        foreach ($this->objectStack as $refVal) {
1027
            if ($refVal === $Object) {
1028
                return '** Recursion ('.get_class($Object).') **';
1029
            }
1030
        }
1031
        array_push($this->objectStack, $Object);
1032
 
1033
        $return['__className'] = $class = get_class($Object);
1034
        $class_lower = strtolower($class);
1035
 
1036
        $reflectionClass = new ReflectionClass($class);
1037
        $properties = array();
1038
        foreach( $reflectionClass->getProperties() as $property) {
1039
          $properties[$property->getName()] = $property;
1040
        }
1041
 
1042
        $members = (array)$Object;
1043
 
1044
        foreach( $properties as $raw_name => $property ) {
1045
 
1046
          $name = $raw_name;
1047
          if($property->isStatic()) {
1048
            $name = 'static:'.$name;
1049
          }
1050
          if($property->isPublic()) {
1051
            $name = 'public:'.$name;
1052
          } else
1053
          if($property->isPrivate()) {
1054
            $name = 'private:'.$name;
1055
            $raw_name = "\0".$class."\0".$raw_name;
1056
          } else
1057
          if($property->isProtected()) {
1058
            $name = 'protected:'.$name;
1059
            $raw_name = "\0".'*'."\0".$raw_name;
1060
          }
1061
 
1062
          if(!(isset($this->objectFilters[$class_lower])
1063
               && is_array($this->objectFilters[$class_lower])
1064
               && in_array($raw_name,$this->objectFilters[$class_lower]))) {
1065
 
1066
            if(array_key_exists($raw_name,$members)
1067
               && !$property->isStatic()) {
1068
 
1069
              $return[$name] = $this->encodeObject($members[$raw_name], $ObjectDepth + 1, 1);
1070
 
1071
            } else {
1072
              if(method_exists($property,'setAccessible')) {
1073
                $property->setAccessible(true);
1074
                $return[$name] = $this->encodeObject($property->getValue($Object), $ObjectDepth + 1, 1);
1075
              } else
1076
              if($property->isPublic()) {
1077
                $return[$name] = $this->encodeObject($property->getValue($Object), $ObjectDepth + 1, 1);
1078
              } else {
1079
                $return[$name] = '** Need PHP 5.3 to get value **';
1080
              }
1081
            }
1082
          } else {
1083
            $return[$name] = '** Excluded by Filter **';
1084
          }
1085
        }
1086
 
1087
        // Include all members that are not defined in the class
1088
        // but exist in the object
1089
        foreach( $members as $raw_name => $value ) {
1090
 
1091
          $name = $raw_name;
1092
 
1093
          if ($name{0} == "\0") {
1094
            $parts = explode("\0", $name);
1095
            $name = $parts[2];
1096
          }
1097
 
1098
          if(!isset($properties[$name])) {
1099
            $name = 'undeclared:'.$name;
1100
 
1101
            if(!(isset($this->objectFilters[$class_lower])
1102
                 && is_array($this->objectFilters[$class_lower])
1103
                 && in_array($raw_name,$this->objectFilters[$class_lower]))) {
1104
 
1105
              $return[$name] = $this->encodeObject($value, $ObjectDepth + 1, 1);
1106
            } else {
1107
              $return[$name] = '** Excluded by Filter **';
1108
            }
1109
          }
1110
        }
1111
 
1112
        array_pop($this->objectStack);
1113
 
1114
    } elseif (is_array($Object)) {
1115
 
1116
        if ($ArrayDepth > $this->options['maxArrayDepth']) {
1117
          return '** Max Array Depth ('.$this->options['maxArrayDepth'].') **';
1118
        }
1119
 
1120
        foreach ($Object as $key => $val) {
1121
 
1122
          // Encoding the $GLOBALS PHP array causes an infinite loop
1123
          // if the recursion is not reset here as it contains
1124
          // a reference to itself. This is the only way I have come up
1125
          // with to stop infinite recursion in this case.
1126
          if($key=='GLOBALS'
1127
             && is_array($val)
1128
             && array_key_exists('GLOBALS',$val)) {
1129
            $val['GLOBALS'] = '** Recursion (GLOBALS) **';
1130
          }
1131
 
1132
          $return[$key] = $this->encodeObject($val, 1, $ArrayDepth + 1);
1133
        }
1134
    } else {
1135
      if(self::is_utf8($Object)) {
1136
        return $Object;
1137
      } else {
1138
        return utf8_encode($Object);
1139
      }
1140
    }
1141
    return $return;
1142
  }
1143
 
1144
  /**
1145
   * Returns true if $string is valid UTF-8 and false otherwise.
1146
   *
1147
   * @param mixed $str String to be tested
1148
   * @return boolean
1149
   */
1150
  protected static function is_utf8($str) {
1151
    $c=0; $b=0;
1152
    $bits=0;
1153
    $len=strlen($str);
1154
    for($i=0; $i<$len; $i++){
1155
        $c=ord($str[$i]);
1156
        if($c > 128){
1157
            if(($c >= 254)) return false;
1158
            elseif($c >= 252) $bits=6;
1159
            elseif($c >= 248) $bits=5;
1160
            elseif($c >= 240) $bits=4;
1161
            elseif($c >= 224) $bits=3;
1162
            elseif($c >= 192) $bits=2;
1163
            else return false;
1164
            if(($i+$bits) > $len) return false;
1165
            while($bits > 1){
1166
                $i++;
1167
                $b=ord($str[$i]);
1168
                if($b < 128 || $b > 191) return false;
1169
                $bits--;
1170
            }
1171
        }
1172
    }
1173
    return true;
1174
  }
1175
 
1176
  /**
1177
   * Converts to and from JSON format.
1178
   *
1179
   * JSON (JavaScript Object Notation) is a lightweight data-interchange
1180
   * format. It is easy for humans to read and write. It is easy for machines
1181
   * to parse and generate. It is based on a subset of the JavaScript
1182
   * Programming Language, Standard ECMA-262 3rd Edition - December 1999.
1183
   * This feature can also be found in  Python. JSON is a text format that is
1184
   * completely language independent but uses conventions that are familiar
1185
   * to programmers of the C-family of languages, including C, C++, C#, Java,
1186
   * JavaScript, Perl, TCL, and many others. These properties make JSON an
1187
   * ideal data-interchange language.
1188
   *
1189
   * This package provides a simple encoder and decoder for JSON notation. It
1190
   * is intended for use with client-side Javascript applications that make
1191
   * use of HTTPRequest to perform server communication functions - data can
1192
   * be encoded into JSON notation for use in a client-side javascript, or
1193
   * decoded from incoming Javascript requests. JSON format is native to
1194
   * Javascript, and can be directly eval()'ed with no further parsing
1195
   * overhead
1196
   *
1197
   * All strings should be in ASCII or UTF-8 format!
1198
   *
1199
   * LICENSE: Redistribution and use in source and binary forms, with or
1200
   * without modification, are permitted provided that the following
1201
   * conditions are met: Redistributions of source code must retain the
1202
   * above copyright notice, this list of conditions and the following
1203
   * disclaimer. Redistributions in binary form must reproduce the above
1204
   * copyright notice, this list of conditions and the following disclaimer
1205
   * in the documentation and/or other materials provided with the
1206
   * distribution.
1207
   *
1208
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
1209
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
1210
   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
1211
   * NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
1212
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
1213
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
1214
   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
1215
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
1216
   * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
1217
   * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
1218
   * DAMAGE.
1219
   *
1220
   * @category
1221
   * @package     Services_JSON
1222
   * @author      Michal Migurski <mike-json@teczno.com>
1223
   * @author      Matt Knapp <mdknapp[at]gmail[dot]com>
1224
   * @author      Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
1225
   * @author      Christoph Dorn <christoph@christophdorn.com>
1226
   * @copyright   2005 Michal Migurski
1227
   * @version     CVS: $Id: JSON.php,v 1.31 2006/06/28 05:54:17 migurski Exp $
1228
   * @license     http://www.opensource.org/licenses/bsd-license.php
1229
   * @link        http://pear.php.net/pepr/pepr-proposal-show.php?id=198
1230
   */
1231
 
1232
 
1233
  /**
1234
   * Keep a list of objects as we descend into the array so we can detect recursion.
1235
   */
1236
  private $json_objectStack = array();
1237
 
1238
 
1239
 /**
1240
  * convert a string from one UTF-8 char to one UTF-16 char
1241
  *
1242
  * Normally should be handled by mb_convert_encoding, but
1243
  * provides a slower PHP-only method for installations
1244
  * that lack the multibye string extension.
1245
  *
1246
  * @param    string  $utf8   UTF-8 character
1247
  * @return   string  UTF-16 character
1248
  * @access   private
1249
  */
1250
  private function json_utf82utf16($utf8)
1251
  {
1252
      // oh please oh please oh please oh please oh please
1253
      if(function_exists('mb_convert_encoding')) {
1254
          return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
1255
      }
1256
 
1257
      switch(strlen($utf8)) {
1258
          case 1:
1259
              // this case should never be reached, because we are in ASCII range
1260
              // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
1261
              return $utf8;
1262
 
1263
          case 2:
1264
              // return a UTF-16 character from a 2-byte UTF-8 char
1265
              // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
1266
              return chr(0x07 & (ord($utf8{0}) >> 2))
1267
                   . chr((0xC0 & (ord($utf8{0}) << 6))
1268
                       | (0x3F & ord($utf8{1})));
1269
 
1270
          case 3:
1271
              // return a UTF-16 character from a 3-byte UTF-8 char
1272
              // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
1273
              return chr((0xF0 & (ord($utf8{0}) << 4))
1274
                       | (0x0F & (ord($utf8{1}) >> 2)))
1275
                   . chr((0xC0 & (ord($utf8{1}) << 6))
1276
                       | (0x7F & ord($utf8{2})));
1277
      }
1278
 
1279
      // ignoring UTF-32 for now, sorry
1280
      return '';
1281
  }
1282
 
1283
 /**
1284
  * encodes an arbitrary variable into JSON format
1285
  *
1286
  * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
1287
  *                           see argument 1 to Services_JSON() above for array-parsing behavior.
1288
  *                           if var is a strng, note that encode() always expects it
1289
  *                           to be in ASCII or UTF-8 format!
1290
  *
1291
  * @return   mixed   JSON string representation of input var or an error if a problem occurs
1292
  * @access   public
1293
  */
1294
  private function json_encode($var)
1295
  {
1296
 
1297
    if(is_object($var)) {
1298
      if(in_array($var,$this->json_objectStack)) {
1299
        return '"** Recursion **"';
1300
      }
1301
    }
1302
 
1303
      switch (gettype($var)) {
1304
          case 'boolean':
1305
              return $var ? 'true' : 'false';
1306
 
1307
          case 'NULL':
1308
              return 'null';
1309
 
1310
          case 'integer':
1311
              return (int) $var;
1312
 
1313
          case 'double':
1314
          case 'float':
1315
              return (float) $var;
1316
 
1317
          case 'string':
1318
              // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
1319
              $ascii = '';
1320
              $strlen_var = strlen($var);
1321
 
1322
             /*
1323
              * Iterate over every character in the string,
1324
              * escaping with a slash or encoding to UTF-8 where necessary
1325
              */
1326
              for ($c = 0; $c < $strlen_var; ++$c) {
1327
 
1328
                  $ord_var_c = ord($var{$c});
1329
 
1330
                  switch (true) {
1331
                      case $ord_var_c == 0x08:
1332
                          $ascii .= '\b';
1333
                          break;
1334
                      case $ord_var_c == 0x09:
1335
                          $ascii .= '\t';
1336
                          break;
1337
                      case $ord_var_c == 0x0A:
1338
                          $ascii .= '\n';
1339
                          break;
1340
                      case $ord_var_c == 0x0C:
1341
                          $ascii .= '\f';
1342
                          break;
1343
                      case $ord_var_c == 0x0D:
1344
                          $ascii .= '\r';
1345
                          break;
1346
 
1347
                      case $ord_var_c == 0x22:
1348
                      case $ord_var_c == 0x2F:
1349
                      case $ord_var_c == 0x5C:
1350
                          // double quote, slash, slosh
1351
                          $ascii .= '\\'.$var{$c};
1352
                          break;
1353
 
1354
                      case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
1355
                          // characters U-00000000 - U-0000007F (same as ASCII)
1356
                          $ascii .= $var{$c};
1357
                          break;
1358
 
1359
                      case (($ord_var_c & 0xE0) == 0xC0):
1360
                          // characters U-00000080 - U-000007FF, mask 110XXXXX
1361
                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
1362
                          $char = pack('C*', $ord_var_c, ord($var{$c + 1}));
1363
                          $c += 1;
1364
                          $utf16 = $this->json_utf82utf16($char);
1365
                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
1366
                          break;
1367
 
1368
                      case (($ord_var_c & 0xF0) == 0xE0):
1369
                          // characters U-00000800 - U-0000FFFF, mask 1110XXXX
1370
                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
1371
                          $char = pack('C*', $ord_var_c,
1372
                                       ord($var{$c + 1}),
1373
                                       ord($var{$c + 2}));
1374
                          $c += 2;
1375
                          $utf16 = $this->json_utf82utf16($char);
1376
                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
1377
                          break;
1378
 
1379
                      case (($ord_var_c & 0xF8) == 0xF0):
1380
                          // characters U-00010000 - U-001FFFFF, mask 11110XXX
1381
                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
1382
                          $char = pack('C*', $ord_var_c,
1383
                                       ord($var{$c + 1}),
1384
                                       ord($var{$c + 2}),
1385
                                       ord($var{$c + 3}));
1386
                          $c += 3;
1387
                          $utf16 = $this->json_utf82utf16($char);
1388
                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
1389
                          break;
1390
 
1391
                      case (($ord_var_c & 0xFC) == 0xF8):
1392
                          // characters U-00200000 - U-03FFFFFF, mask 111110XX
1393
                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
1394
                          $char = pack('C*', $ord_var_c,
1395
                                       ord($var{$c + 1}),
1396
                                       ord($var{$c + 2}),
1397
                                       ord($var{$c + 3}),
1398
                                       ord($var{$c + 4}));
1399
                          $c += 4;
1400
                          $utf16 = $this->json_utf82utf16($char);
1401
                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
1402
                          break;
1403
 
1404
                      case (($ord_var_c & 0xFE) == 0xFC):
1405
                          // characters U-04000000 - U-7FFFFFFF, mask 1111110X
1406
                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
1407
                          $char = pack('C*', $ord_var_c,
1408
                                       ord($var{$c + 1}),
1409
                                       ord($var{$c + 2}),
1410
                                       ord($var{$c + 3}),
1411
                                       ord($var{$c + 4}),
1412
                                       ord($var{$c + 5}));
1413
                          $c += 5;
1414
                          $utf16 = $this->json_utf82utf16($char);
1415
                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
1416
                          break;
1417
                  }
1418
              }
1419
 
1420
              return '"'.$ascii.'"';
1421
 
1422
          case 'array':
1423
             /*
1424
              * As per JSON spec if any array key is not an integer
1425
              * we must treat the the whole array as an object. We
1426
              * also try to catch a sparsely populated associative
1427
              * array with numeric keys here because some JS engines
1428
              * will create an array with empty indexes up to
1429
              * max_index which can cause memory issues and because
1430
              * the keys, which may be relevant, will be remapped
1431
              * otherwise.
1432
              *
1433
              * As per the ECMA and JSON specification an object may
1434
              * have any string as a property. Unfortunately due to
1435
              * a hole in the ECMA specification if the key is a
1436
              * ECMA reserved word or starts with a digit the
1437
              * parameter is only accessible using ECMAScript's
1438
              * bracket notation.
1439
              */
1440
 
1441
              // treat as a JSON object
1442
              if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
1443
 
1444
                  $this->json_objectStack[] = $var;
1445
 
1446
                  $properties = array_map(array($this, 'json_name_value'),
1447
                                          array_keys($var),
1448
                                          array_values($var));
1449
 
1450
                  array_pop($this->json_objectStack);
1451
 
1452
                  foreach($properties as $property) {
1453
                      if($property instanceof Exception) {
1454
                          return $property;
1455
                      }
1456
                  }
1457
 
1458
                  return '{' . join(',', $properties) . '}';
1459
              }
1460
 
1461
              $this->json_objectStack[] = $var;
1462
 
1463
              // treat it like a regular array
1464
              $elements = array_map(array($this, 'json_encode'), $var);
1465
 
1466
              array_pop($this->json_objectStack);
1467
 
1468
              foreach($elements as $element) {
1469
                  if($element instanceof Exception) {
1470
                      return $element;
1471
                  }
1472
              }
1473
 
1474
              return '[' . join(',', $elements) . ']';
1475
 
1476
          case 'object':
1477
              $vars = self::encodeObject($var);
1478
 
1479
              $this->json_objectStack[] = $var;
1480
 
1481
              $properties = array_map(array($this, 'json_name_value'),
1482
                                      array_keys($vars),
1483
                                      array_values($vars));
1484
 
1485
              array_pop($this->json_objectStack);
1486
 
1487
              foreach($properties as $property) {
1488
                  if($property instanceof Exception) {
1489
                      return $property;
1490
                  }
1491
              }
1492
 
1493
              return '{' . join(',', $properties) . '}';
1494
 
1495
          default:
1496
              return null;
1497
      }
1498
  }
1499
 
1500
 /**
1501
  * array-walking function for use in generating JSON-formatted name-value pairs
1502
  *
1503
  * @param    string  $name   name of key to use
1504
  * @param    mixed   $value  reference to an array element to be encoded
1505
  *
1506
  * @return   string  JSON-formatted name-value pair, like '"name":value'
1507
  * @access   private
1508
  */
1509
  private function json_name_value($name, $value)
1510
  {
1511
      // Encoding the $GLOBALS PHP array causes an infinite loop
1512
      // if the recursion is not reset here as it contains
1513
      // a reference to itself. This is the only way I have come up
1514
      // with to stop infinite recursion in this case.
1515
      if($name=='GLOBALS'
1516
         && is_array($value)
1517
         && array_key_exists('GLOBALS',$value)) {
1518
        $value['GLOBALS'] = '** Recursion **';
1519
      }
1520
 
1521
      $encoded_value = $this->json_encode($value);
1522
 
1523
      if($encoded_value instanceof Exception) {
1524
          return $encoded_value;
1525
      }
1526
 
1527
      return $this->json_encode(strval($name)) . ':' . $encoded_value;
1528
  }
1529
}