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320 jpm 1
<?php
1173 jp_milcent 2
/**
3
 * PEAR, the PHP Extension and Application Repository
4
 *
5
 * PEAR class and PEAR_Error class
6
 *
7
 * PHP versions 4 and 5
8
 *
9
 * LICENSE: This source file is subject to version 3.0 of the PHP license
10
 * that is available through the world-wide-web at the following URI:
11
 * http://www.php.net/license/3_0.txt.  If you did not receive a copy of
12
 * the PHP License and are unable to obtain it through the web, please
13
 * send a note to license@php.net so we can mail you a copy immediately.
14
 *
15
 * @category   pear
16
 * @package    PEAR
17
 * @author     Sterling Hughes <sterling@php.net>
18
 * @author     Stig Bakken <ssb@php.net>
19
 * @author     Tomas V.V.Cox <cox@idecnet.com>
20
 * @author     Greg Beaver <cellog@php.net>
21
 * @copyright  1997-2006 The PHP Group
22
 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
23
 * @version    CVS: $Id: PEAR.php,v 1.2 2006-12-14 15:04:29 jp_milcent Exp $
24
 * @link       http://pear.php.net/package/PEAR
25
 * @since      File available since Release 0.1
26
 */
320 jpm 27
 
1173 jp_milcent 28
/**#@+
29
 * ERROR constants
30
 */
320 jpm 31
define('PEAR_ERROR_RETURN',     1);
32
define('PEAR_ERROR_PRINT',      2);
33
define('PEAR_ERROR_TRIGGER',    4);
34
define('PEAR_ERROR_DIE',        8);
35
define('PEAR_ERROR_CALLBACK',  16);
36
/**
37
 * WARNING: obsolete
38
 * @deprecated
39
 */
40
define('PEAR_ERROR_EXCEPTION', 32);
1173 jp_milcent 41
/**#@-*/
320 jpm 42
define('PEAR_ZE2', (function_exists('version_compare') &&
43
                    version_compare(zend_version(), "2-dev", "ge")));
44
 
45
if (substr(PHP_OS, 0, 3) == 'WIN') {
46
    define('OS_WINDOWS', true);
47
    define('OS_UNIX',    false);
48
    define('PEAR_OS',    'Windows');
49
} else {
50
    define('OS_WINDOWS', false);
51
    define('OS_UNIX',    true);
52
    define('PEAR_OS',    'Unix'); // blatant assumption
53
}
54
 
55
// instant backwards compatibility
56
if (!defined('PATH_SEPARATOR')) {
57
    if (OS_WINDOWS) {
58
        define('PATH_SEPARATOR', ';');
59
    } else {
60
        define('PATH_SEPARATOR', ':');
61
    }
62
}
63
 
64
$GLOBALS['_PEAR_default_error_mode']     = PEAR_ERROR_RETURN;
65
$GLOBALS['_PEAR_default_error_options']  = E_USER_NOTICE;
66
$GLOBALS['_PEAR_destructor_object_list'] = array();
67
$GLOBALS['_PEAR_shutdown_funcs']         = array();
68
$GLOBALS['_PEAR_error_handler_stack']    = array();
69
 
70
@ini_set('track_errors', true);
71
 
72
/**
73
 * Base class for other PEAR classes.  Provides rudimentary
74
 * emulation of destructors.
75
 *
76
 * If you want a destructor in your class, inherit PEAR and make a
77
 * destructor method called _yourclassname (same name as the
78
 * constructor, but with a "_" prefix).  Also, in your constructor you
79
 * have to call the PEAR constructor: $this->PEAR();.
80
 * The destructor method will be called without parameters.  Note that
81
 * at in some SAPI implementations (such as Apache), any output during
82
 * the request shutdown (in which destructors are called) seems to be
83
 * discarded.  If you need to get any debug information from your
84
 * destructor, use error_log(), syslog() or something similar.
85
 *
86
 * IMPORTANT! To use the emulated destructors you need to create the
87
 * objects by reference: $obj =& new PEAR_child;
88
 *
1173 jp_milcent 89
 * @category   pear
90
 * @package    PEAR
91
 * @author     Stig Bakken <ssb@php.net>
92
 * @author     Tomas V.V. Cox <cox@idecnet.com>
93
 * @author     Greg Beaver <cellog@php.net>
94
 * @copyright  1997-2006 The PHP Group
95
 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
96
 * @version    Release: 1.4.11
97
 * @link       http://pear.php.net/package/PEAR
98
 * @see        PEAR_Error
99
 * @since      Class available since PHP 4.0.2
100
 * @link        http://pear.php.net/manual/en/core.pear.php#core.pear.pear
320 jpm 101
 */
102
class PEAR
103
{
104
    // {{{ properties
105
 
106
    /**
107
     * Whether to enable internal debug messages.
108
     *
109
     * @var     bool
110
     * @access  private
111
     */
112
    var $_debug = false;
113
 
114
    /**
115
     * Default error mode for this object.
116
     *
117
     * @var     int
118
     * @access  private
119
     */
120
    var $_default_error_mode = null;
121
 
122
    /**
123
     * Default error options used for this object when error mode
124
     * is PEAR_ERROR_TRIGGER.
125
     *
126
     * @var     int
127
     * @access  private
128
     */
129
    var $_default_error_options = null;
130
 
131
    /**
132
     * Default error handler (callback) for this object, if error mode is
133
     * PEAR_ERROR_CALLBACK.
134
     *
135
     * @var     string
136
     * @access  private
137
     */
138
    var $_default_error_handler = '';
139
 
140
    /**
141
     * Which class to use for error objects.
142
     *
143
     * @var     string
144
     * @access  private
145
     */
146
    var $_error_class = 'PEAR_Error';
147
 
148
    /**
149
     * An array of expected errors.
150
     *
151
     * @var     array
152
     * @access  private
153
     */
154
    var $_expected_errors = array();
155
 
156
    // }}}
157
 
158
    // {{{ constructor
159
 
160
    /**
161
     * Constructor.  Registers this object in
162
     * $_PEAR_destructor_object_list for destructor emulation if a
163
     * destructor object exists.
164
     *
165
     * @param string $error_class  (optional) which class to use for
166
     *        error objects, defaults to PEAR_Error.
167
     * @access public
168
     * @return void
169
     */
170
    function PEAR($error_class = null)
171
    {
172
        $classname = strtolower(get_class($this));
173
        if ($this->_debug) {
174
            print "PEAR constructor called, class=$classname\n";
175
        }
176
        if ($error_class !== null) {
177
            $this->_error_class = $error_class;
178
        }
179
        while ($classname && strcasecmp($classname, "pear")) {
180
            $destructor = "_$classname";
181
            if (method_exists($this, $destructor)) {
182
                global $_PEAR_destructor_object_list;
183
                $_PEAR_destructor_object_list[] = &$this;
184
                if (!isset($GLOBALS['_PEAR_SHUTDOWN_REGISTERED'])) {
185
                    register_shutdown_function("_PEAR_call_destructors");
186
                    $GLOBALS['_PEAR_SHUTDOWN_REGISTERED'] = true;
187
                }
188
                break;
189
            } else {
190
                $classname = get_parent_class($classname);
191
            }
192
        }
193
    }
194
 
195
    // }}}
196
    // {{{ destructor
197
 
198
    /**
199
     * Destructor (the emulated type of...).  Does nothing right now,
200
     * but is included for forward compatibility, so subclass
201
     * destructors should always call it.
202
     *
203
     * See the note in the class desciption about output from
204
     * destructors.
205
     *
206
     * @access public
207
     * @return void
208
     */
209
    function _PEAR() {
210
        if ($this->_debug) {
211
            printf("PEAR destructor called, class=%s\n", strtolower(get_class($this)));
212
        }
213
    }
214
 
215
    // }}}
216
    // {{{ getStaticProperty()
217
 
218
    /**
219
    * If you have a class that's mostly/entirely static, and you need static
220
    * properties, you can use this method to simulate them. Eg. in your method(s)
221
    * do this: $myVar = &PEAR::getStaticProperty('myclass', 'myVar');
222
    * You MUST use a reference, or they will not persist!
223
    *
224
    * @access public
225
    * @param  string $class  The calling classname, to prevent clashes
226
    * @param  string $var    The variable to retrieve.
227
    * @return mixed   A reference to the variable. If not set it will be
228
    *                 auto initialised to NULL.
229
    */
230
    function &getStaticProperty($class, $var)
231
    {
232
        static $properties;
233
        return $properties[$class][$var];
234
    }
235
 
236
    // }}}
237
    // {{{ registerShutdownFunc()
238
 
239
    /**
240
    * Use this function to register a shutdown method for static
241
    * classes.
242
    *
243
    * @access public
244
    * @param  mixed $func  The function name (or array of class/method) to call
245
    * @param  mixed $args  The arguments to pass to the function
246
    * @return void
247
    */
248
    function registerShutdownFunc($func, $args = array())
249
    {
1173 jp_milcent 250
        // if we are called statically, there is a potential
251
        // that no shutdown func is registered.  Bug #6445
252
        if (!isset($GLOBALS['_PEAR_SHUTDOWN_REGISTERED'])) {
253
            register_shutdown_function("_PEAR_call_destructors");
254
            $GLOBALS['_PEAR_SHUTDOWN_REGISTERED'] = true;
255
        }
320 jpm 256
        $GLOBALS['_PEAR_shutdown_funcs'][] = array($func, $args);
257
    }
258
 
259
    // }}}
260
    // {{{ isError()
261
 
262
    /**
263
     * Tell whether a value is a PEAR error.
264
     *
265
     * @param   mixed $data   the value to test
266
     * @param   int   $code   if $data is an error object, return true
267
     *                        only if $code is a string and
268
     *                        $obj->getMessage() == $code or
269
     *                        $code is an integer and $obj->getCode() == $code
270
     * @access  public
271
     * @return  bool    true if parameter is an error
272
     */
273
    function isError($data, $code = null)
274
    {
275
        if (is_a($data, 'PEAR_Error')) {
276
            if (is_null($code)) {
277
                return true;
278
            } elseif (is_string($code)) {
279
                return $data->getMessage() == $code;
280
            } else {
281
                return $data->getCode() == $code;
282
            }
283
        }
284
        return false;
285
    }
286
 
287
    // }}}
288
    // {{{ setErrorHandling()
289
 
290
    /**
291
     * Sets how errors generated by this object should be handled.
292
     * Can be invoked both in objects and statically.  If called
293
     * statically, setErrorHandling sets the default behaviour for all
294
     * PEAR objects.  If called in an object, setErrorHandling sets
295
     * the default behaviour for that object.
296
     *
297
     * @param int $mode
298
     *        One of PEAR_ERROR_RETURN, PEAR_ERROR_PRINT,
299
     *        PEAR_ERROR_TRIGGER, PEAR_ERROR_DIE,
300
     *        PEAR_ERROR_CALLBACK or PEAR_ERROR_EXCEPTION.
301
     *
302
     * @param mixed $options
303
     *        When $mode is PEAR_ERROR_TRIGGER, this is the error level (one
304
     *        of E_USER_NOTICE, E_USER_WARNING or E_USER_ERROR).
305
     *
306
     *        When $mode is PEAR_ERROR_CALLBACK, this parameter is expected
307
     *        to be the callback function or method.  A callback
308
     *        function is a string with the name of the function, a
309
     *        callback method is an array of two elements: the element
310
     *        at index 0 is the object, and the element at index 1 is
311
     *        the name of the method to call in the object.
312
     *
313
     *        When $mode is PEAR_ERROR_PRINT or PEAR_ERROR_DIE, this is
314
     *        a printf format string used when printing the error
315
     *        message.
316
     *
317
     * @access public
318
     * @return void
319
     * @see PEAR_ERROR_RETURN
320
     * @see PEAR_ERROR_PRINT
321
     * @see PEAR_ERROR_TRIGGER
322
     * @see PEAR_ERROR_DIE
323
     * @see PEAR_ERROR_CALLBACK
324
     * @see PEAR_ERROR_EXCEPTION
325
     *
326
     * @since PHP 4.0.5
327
     */
328
 
329
    function setErrorHandling($mode = null, $options = null)
330
    {
331
        if (isset($this) && is_a($this, 'PEAR')) {
332
            $setmode     = &$this->_default_error_mode;
333
            $setoptions  = &$this->_default_error_options;
334
        } else {
335
            $setmode     = &$GLOBALS['_PEAR_default_error_mode'];
336
            $setoptions  = &$GLOBALS['_PEAR_default_error_options'];
337
        }
338
 
339
        switch ($mode) {
340
            case PEAR_ERROR_EXCEPTION:
341
            case PEAR_ERROR_RETURN:
342
            case PEAR_ERROR_PRINT:
343
            case PEAR_ERROR_TRIGGER:
344
            case PEAR_ERROR_DIE:
345
            case null:
346
                $setmode = $mode;
347
                $setoptions = $options;
348
                break;
349
 
350
            case PEAR_ERROR_CALLBACK:
351
                $setmode = $mode;
352
                // class/object method callback
353
                if (is_callable($options)) {
354
                    $setoptions = $options;
355
                } else {
356
                    trigger_error("invalid error callback", E_USER_WARNING);
357
                }
358
                break;
359
 
360
            default:
361
                trigger_error("invalid error mode", E_USER_WARNING);
362
                break;
363
        }
364
    }
365
 
366
    // }}}
367
    // {{{ expectError()
368
 
369
    /**
370
     * This method is used to tell which errors you expect to get.
371
     * Expected errors are always returned with error mode
372
     * PEAR_ERROR_RETURN.  Expected error codes are stored in a stack,
373
     * and this method pushes a new element onto it.  The list of
374
     * expected errors are in effect until they are popped off the
375
     * stack with the popExpect() method.
376
     *
377
     * Note that this method can not be called statically
378
     *
379
     * @param mixed $code a single error code or an array of error codes to expect
380
     *
381
     * @return int     the new depth of the "expected errors" stack
382
     * @access public
383
     */
384
    function expectError($code = '*')
385
    {
386
        if (is_array($code)) {
387
            array_push($this->_expected_errors, $code);
388
        } else {
389
            array_push($this->_expected_errors, array($code));
390
        }
391
        return sizeof($this->_expected_errors);
392
    }
393
 
394
    // }}}
395
    // {{{ popExpect()
396
 
397
    /**
398
     * This method pops one element off the expected error codes
399
     * stack.
400
     *
401
     * @return array   the list of error codes that were popped
402
     */
403
    function popExpect()
404
    {
405
        return array_pop($this->_expected_errors);
406
    }
407
 
408
    // }}}
409
    // {{{ _checkDelExpect()
410
 
411
    /**
412
     * This method checks unsets an error code if available
413
     *
414
     * @param mixed error code
415
     * @return bool true if the error code was unset, false otherwise
416
     * @access private
417
     * @since PHP 4.3.0
418
     */
419
    function _checkDelExpect($error_code)
420
    {
421
        $deleted = false;
422
 
423
        foreach ($this->_expected_errors AS $key => $error_array) {
424
            if (in_array($error_code, $error_array)) {
425
                unset($this->_expected_errors[$key][array_search($error_code, $error_array)]);
426
                $deleted = true;
427
            }
428
 
429
            // clean up empty arrays
430
            if (0 == count($this->_expected_errors[$key])) {
431
                unset($this->_expected_errors[$key]);
432
            }
433
        }
434
        return $deleted;
435
    }
436
 
437
    // }}}
438
    // {{{ delExpect()
439
 
440
    /**
441
     * This method deletes all occurences of the specified element from
442
     * the expected error codes stack.
443
     *
444
     * @param  mixed $error_code error code that should be deleted
445
     * @return mixed list of error codes that were deleted or error
446
     * @access public
447
     * @since PHP 4.3.0
448
     */
449
    function delExpect($error_code)
450
    {
451
        $deleted = false;
452
 
453
        if ((is_array($error_code) && (0 != count($error_code)))) {
454
            // $error_code is a non-empty array here;
455
            // we walk through it trying to unset all
456
            // values
457
            foreach($error_code as $key => $error) {
458
                if ($this->_checkDelExpect($error)) {
459
                    $deleted =  true;
460
                } else {
461
                    $deleted = false;
462
                }
463
            }
464
            return $deleted ? true : PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME
465
        } elseif (!empty($error_code)) {
466
            // $error_code comes alone, trying to unset it
467
            if ($this->_checkDelExpect($error_code)) {
468
                return true;
469
            } else {
470
                return PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME
471
            }
472
        } else {
473
            // $error_code is empty
474
            return PEAR::raiseError("The expected error you submitted is empty"); // IMPROVE ME
475
        }
476
    }
477
 
478
    // }}}
479
    // {{{ raiseError()
480
 
481
    /**
482
     * This method is a wrapper that returns an instance of the
483
     * configured error class with this object's default error
484
     * handling applied.  If the $mode and $options parameters are not
485
     * specified, the object's defaults are used.
486
     *
487
     * @param mixed $message a text error message or a PEAR error object
488
     *
489
     * @param int $code      a numeric error code (it is up to your class
490
     *                  to define these if you want to use codes)
491
     *
492
     * @param int $mode      One of PEAR_ERROR_RETURN, PEAR_ERROR_PRINT,
493
     *                  PEAR_ERROR_TRIGGER, PEAR_ERROR_DIE,
494
     *                  PEAR_ERROR_CALLBACK, PEAR_ERROR_EXCEPTION.
495
     *
496
     * @param mixed $options If $mode is PEAR_ERROR_TRIGGER, this parameter
497
     *                  specifies the PHP-internal error level (one of
498
     *                  E_USER_NOTICE, E_USER_WARNING or E_USER_ERROR).
499
     *                  If $mode is PEAR_ERROR_CALLBACK, this
500
     *                  parameter specifies the callback function or
501
     *                  method.  In other error modes this parameter
502
     *                  is ignored.
503
     *
504
     * @param string $userinfo If you need to pass along for example debug
505
     *                  information, this parameter is meant for that.
506
     *
507
     * @param string $error_class The returned error object will be
508
     *                  instantiated from this class, if specified.
509
     *
510
     * @param bool $skipmsg If true, raiseError will only pass error codes,
511
     *                  the error message parameter will be dropped.
512
     *
513
     * @access public
514
     * @return object   a PEAR error object
515
     * @see PEAR::setErrorHandling
516
     * @since PHP 4.0.5
517
     */
1173 jp_milcent 518
    function &raiseError($message = null,
320 jpm 519
                         $code = null,
520
                         $mode = null,
521
                         $options = null,
522
                         $userinfo = null,
523
                         $error_class = null,
524
                         $skipmsg = false)
525
    {
526
        // The error is yet a PEAR error object
527
        if (is_object($message)) {
528
            $code        = $message->getCode();
529
            $userinfo    = $message->getUserInfo();
530
            $error_class = $message->getType();
531
            $message->error_message_prefix = '';
532
            $message     = $message->getMessage();
533
        }
534
 
535
        if (isset($this) && isset($this->_expected_errors) && sizeof($this->_expected_errors) > 0 && sizeof($exp = end($this->_expected_errors))) {
536
            if ($exp[0] == "*" ||
537
                (is_int(reset($exp)) && in_array($code, $exp)) ||
538
                (is_string(reset($exp)) && in_array($message, $exp))) {
539
                $mode = PEAR_ERROR_RETURN;
540
            }
541
        }
542
        // No mode given, try global ones
543
        if ($mode === null) {
544
            // Class error handler
545
            if (isset($this) && isset($this->_default_error_mode)) {
546
                $mode    = $this->_default_error_mode;
547
                $options = $this->_default_error_options;
548
            // Global error handler
549
            } elseif (isset($GLOBALS['_PEAR_default_error_mode'])) {
550
                $mode    = $GLOBALS['_PEAR_default_error_mode'];
551
                $options = $GLOBALS['_PEAR_default_error_options'];
552
            }
553
        }
554
 
555
        if ($error_class !== null) {
556
            $ec = $error_class;
557
        } elseif (isset($this) && isset($this->_error_class)) {
558
            $ec = $this->_error_class;
559
        } else {
560
            $ec = 'PEAR_Error';
561
        }
562
        if ($skipmsg) {
1173 jp_milcent 563
            $a = &new $ec($code, $mode, $options, $userinfo);
564
            return $a;
320 jpm 565
        } else {
1173 jp_milcent 566
            $a = &new $ec($message, $code, $mode, $options, $userinfo);
567
            return $a;
320 jpm 568
        }
569
    }
570
 
571
    // }}}
572
    // {{{ throwError()
573
 
574
    /**
575
     * Simpler form of raiseError with fewer options.  In most cases
576
     * message, code and userinfo are enough.
577
     *
578
     * @param string $message
579
     *
580
     */
1173 jp_milcent 581
    function &throwError($message = null,
320 jpm 582
                         $code = null,
583
                         $userinfo = null)
584
    {
585
        if (isset($this) && is_a($this, 'PEAR')) {
1173 jp_milcent 586
            $a = &$this->raiseError($message, $code, null, null, $userinfo);
587
            return $a;
320 jpm 588
        } else {
1173 jp_milcent 589
            $a = &PEAR::raiseError($message, $code, null, null, $userinfo);
590
            return $a;
320 jpm 591
        }
592
    }
593
 
594
    // }}}
595
    function staticPushErrorHandling($mode, $options = null)
596
    {
597
        $stack = &$GLOBALS['_PEAR_error_handler_stack'];
598
        $def_mode    = &$GLOBALS['_PEAR_default_error_mode'];
599
        $def_options = &$GLOBALS['_PEAR_default_error_options'];
600
        $stack[] = array($def_mode, $def_options);
601
        switch ($mode) {
602
            case PEAR_ERROR_EXCEPTION:
603
            case PEAR_ERROR_RETURN:
604
            case PEAR_ERROR_PRINT:
605
            case PEAR_ERROR_TRIGGER:
606
            case PEAR_ERROR_DIE:
607
            case null:
608
                $def_mode = $mode;
609
                $def_options = $options;
610
                break;
611
 
612
            case PEAR_ERROR_CALLBACK:
613
                $def_mode = $mode;
614
                // class/object method callback
615
                if (is_callable($options)) {
616
                    $def_options = $options;
617
                } else {
618
                    trigger_error("invalid error callback", E_USER_WARNING);
619
                }
620
                break;
621
 
622
            default:
623
                trigger_error("invalid error mode", E_USER_WARNING);
624
                break;
625
        }
626
        $stack[] = array($mode, $options);
627
        return true;
628
    }
629
 
630
    function staticPopErrorHandling()
631
    {
632
        $stack = &$GLOBALS['_PEAR_error_handler_stack'];
633
        $setmode     = &$GLOBALS['_PEAR_default_error_mode'];
634
        $setoptions  = &$GLOBALS['_PEAR_default_error_options'];
635
        array_pop($stack);
636
        list($mode, $options) = $stack[sizeof($stack) - 1];
637
        array_pop($stack);
638
        switch ($mode) {
639
            case PEAR_ERROR_EXCEPTION:
640
            case PEAR_ERROR_RETURN:
641
            case PEAR_ERROR_PRINT:
642
            case PEAR_ERROR_TRIGGER:
643
            case PEAR_ERROR_DIE:
644
            case null:
645
                $setmode = $mode;
646
                $setoptions = $options;
647
                break;
648
 
649
            case PEAR_ERROR_CALLBACK:
650
                $setmode = $mode;
651
                // class/object method callback
652
                if (is_callable($options)) {
653
                    $setoptions = $options;
654
                } else {
655
                    trigger_error("invalid error callback", E_USER_WARNING);
656
                }
657
                break;
658
 
659
            default:
660
                trigger_error("invalid error mode", E_USER_WARNING);
661
                break;
662
        }
663
        return true;
664
    }
665
 
666
    // {{{ pushErrorHandling()
667
 
668
    /**
669
     * Push a new error handler on top of the error handler options stack. With this
670
     * you can easily override the actual error handler for some code and restore
671
     * it later with popErrorHandling.
672
     *
673
     * @param mixed $mode (same as setErrorHandling)
674
     * @param mixed $options (same as setErrorHandling)
675
     *
676
     * @return bool Always true
677
     *
678
     * @see PEAR::setErrorHandling
679
     */
680
    function pushErrorHandling($mode, $options = null)
681
    {
682
        $stack = &$GLOBALS['_PEAR_error_handler_stack'];
683
        if (isset($this) && is_a($this, 'PEAR')) {
684
            $def_mode    = &$this->_default_error_mode;
685
            $def_options = &$this->_default_error_options;
686
        } else {
687
            $def_mode    = &$GLOBALS['_PEAR_default_error_mode'];
688
            $def_options = &$GLOBALS['_PEAR_default_error_options'];
689
        }
690
        $stack[] = array($def_mode, $def_options);
691
 
692
        if (isset($this) && is_a($this, 'PEAR')) {
693
            $this->setErrorHandling($mode, $options);
694
        } else {
695
            PEAR::setErrorHandling($mode, $options);
696
        }
697
        $stack[] = array($mode, $options);
698
        return true;
699
    }
700
 
701
    // }}}
702
    // {{{ popErrorHandling()
703
 
704
    /**
705
    * Pop the last error handler used
706
    *
707
    * @return bool Always true
708
    *
709
    * @see PEAR::pushErrorHandling
710
    */
711
    function popErrorHandling()
712
    {
713
        $stack = &$GLOBALS['_PEAR_error_handler_stack'];
714
        array_pop($stack);
715
        list($mode, $options) = $stack[sizeof($stack) - 1];
716
        array_pop($stack);
717
        if (isset($this) && is_a($this, 'PEAR')) {
718
            $this->setErrorHandling($mode, $options);
719
        } else {
720
            PEAR::setErrorHandling($mode, $options);
721
        }
722
        return true;
723
    }
724
 
725
    // }}}
726
    // {{{ loadExtension()
727
 
728
    /**
729
    * OS independant PHP extension load. Remember to take care
730
    * on the correct extension name for case sensitive OSes.
731
    *
732
    * @param string $ext The extension name
733
    * @return bool Success or not on the dl() call
734
    */
735
    function loadExtension($ext)
736
    {
737
        if (!extension_loaded($ext)) {
738
            // if either returns true dl() will produce a FATAL error, stop that
739
            if ((ini_get('enable_dl') != 1) || (ini_get('safe_mode') == 1)) {
740
                return false;
741
            }
742
            if (OS_WINDOWS) {
743
                $suffix = '.dll';
744
            } elseif (PHP_OS == 'HP-UX') {
745
                $suffix = '.sl';
746
            } elseif (PHP_OS == 'AIX') {
747
                $suffix = '.a';
748
            } elseif (PHP_OS == 'OSX') {
749
                $suffix = '.bundle';
750
            } else {
751
                $suffix = '.so';
752
            }
753
            return @dl('php_'.$ext.$suffix) || @dl($ext.$suffix);
754
        }
755
        return true;
756
    }
757
 
758
    // }}}
759
}
760
 
761
// {{{ _PEAR_call_destructors()
762
 
763
function _PEAR_call_destructors()
764
{
765
    global $_PEAR_destructor_object_list;
766
    if (is_array($_PEAR_destructor_object_list) &&
767
        sizeof($_PEAR_destructor_object_list))
768
    {
769
        reset($_PEAR_destructor_object_list);
770
        if (@PEAR::getStaticProperty('PEAR', 'destructlifo')) {
771
            $_PEAR_destructor_object_list = array_reverse($_PEAR_destructor_object_list);
772
        }
773
        while (list($k, $objref) = each($_PEAR_destructor_object_list)) {
774
            $classname = get_class($objref);
775
            while ($classname) {
776
                $destructor = "_$classname";
777
                if (method_exists($objref, $destructor)) {
778
                    $objref->$destructor();
779
                    break;
780
                } else {
781
                    $classname = get_parent_class($classname);
782
                }
783
            }
784
        }
785
        // Empty the object list to ensure that destructors are
786
        // not called more than once.
787
        $_PEAR_destructor_object_list = array();
788
    }
789
 
790
    // Now call the shutdown functions
791
    if (is_array($GLOBALS['_PEAR_shutdown_funcs']) AND !empty($GLOBALS['_PEAR_shutdown_funcs'])) {
792
        foreach ($GLOBALS['_PEAR_shutdown_funcs'] as $value) {
793
            call_user_func_array($value[0], $value[1]);
794
        }
795
    }
796
}
797
 
798
// }}}
1173 jp_milcent 799
/**
800
 * Standard PEAR error class for PHP 4
801
 *
802
 * This class is supserseded by {@link PEAR_Exception} in PHP 5
803
 *
804
 * @category   pear
805
 * @package    PEAR
806
 * @author     Stig Bakken <ssb@php.net>
807
 * @author     Tomas V.V. Cox <cox@idecnet.com>
808
 * @author     Gregory Beaver <cellog@php.net>
809
 * @copyright  1997-2006 The PHP Group
810
 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
811
 * @version    Release: 1.4.11
812
 * @link       http://pear.php.net/manual/en/core.pear.pear-error.php
813
 * @see        PEAR::raiseError(), PEAR::throwError()
814
 * @since      Class available since PHP 4.0.2
815
 */
320 jpm 816
class PEAR_Error
817
{
818
    // {{{ properties
819
 
820
    var $error_message_prefix = '';
821
    var $mode                 = PEAR_ERROR_RETURN;
822
    var $level                = E_USER_NOTICE;
823
    var $code                 = -1;
824
    var $message              = '';
825
    var $userinfo             = '';
826
    var $backtrace            = null;
827
 
828
    // }}}
829
    // {{{ constructor
830
 
831
    /**
832
     * PEAR_Error constructor
833
     *
834
     * @param string $message  message
835
     *
836
     * @param int $code     (optional) error code
837
     *
838
     * @param int $mode     (optional) error mode, one of: PEAR_ERROR_RETURN,
839
     * PEAR_ERROR_PRINT, PEAR_ERROR_DIE, PEAR_ERROR_TRIGGER,
840
     * PEAR_ERROR_CALLBACK or PEAR_ERROR_EXCEPTION
841
     *
842
     * @param mixed $options   (optional) error level, _OR_ in the case of
843
     * PEAR_ERROR_CALLBACK, the callback function or object/method
844
     * tuple.
845
     *
846
     * @param string $userinfo (optional) additional user/debug info
847
     *
848
     * @access public
849
     *
850
     */
851
    function PEAR_Error($message = 'unknown error', $code = null,
852
                        $mode = null, $options = null, $userinfo = null)
853
    {
854
        if ($mode === null) {
855
            $mode = PEAR_ERROR_RETURN;
856
        }
857
        $this->message   = $message;
858
        $this->code      = $code;
859
        $this->mode      = $mode;
860
        $this->userinfo  = $userinfo;
861
        if (function_exists("debug_backtrace")) {
862
            if (@!PEAR::getStaticProperty('PEAR_Error', 'skiptrace')) {
863
                $this->backtrace = debug_backtrace();
864
            }
865
        }
866
        if ($mode & PEAR_ERROR_CALLBACK) {
867
            $this->level = E_USER_NOTICE;
868
            $this->callback = $options;
869
        } else {
870
            if ($options === null) {
871
                $options = E_USER_NOTICE;
872
            }
873
            $this->level = $options;
874
            $this->callback = null;
875
        }
876
        if ($this->mode & PEAR_ERROR_PRINT) {
877
            if (is_null($options) || is_int($options)) {
878
                $format = "%s";
879
            } else {
880
                $format = $options;
881
            }
882
            printf($format, $this->getMessage());
883
        }
884
        if ($this->mode & PEAR_ERROR_TRIGGER) {
885
            trigger_error($this->getMessage(), $this->level);
886
        }
887
        if ($this->mode & PEAR_ERROR_DIE) {
888
            $msg = $this->getMessage();
889
            if (is_null($options) || is_int($options)) {
890
                $format = "%s";
891
                if (substr($msg, -1) != "\n") {
892
                    $msg .= "\n";
893
                }
894
            } else {
895
                $format = $options;
896
            }
897
            die(sprintf($format, $msg));
898
        }
899
        if ($this->mode & PEAR_ERROR_CALLBACK) {
900
            if (is_callable($this->callback)) {
901
                call_user_func($this->callback, $this);
902
            }
903
        }
904
        if ($this->mode & PEAR_ERROR_EXCEPTION) {
1173 jp_milcent 905
            trigger_error("PEAR_ERROR_EXCEPTION is obsolete, use class PEAR_Exception for exceptions", E_USER_WARNING);
906
            eval('$e = new Exception($this->message, $this->code);throw($e);');
320 jpm 907
        }
908
    }
909
 
910
    // }}}
911
    // {{{ getMode()
912
 
913
    /**
914
     * Get the error mode from an error object.
915
     *
916
     * @return int error mode
917
     * @access public
918
     */
919
    function getMode() {
920
        return $this->mode;
921
    }
922
 
923
    // }}}
924
    // {{{ getCallback()
925
 
926
    /**
927
     * Get the callback function/method from an error object.
928
     *
929
     * @return mixed callback function or object/method array
930
     * @access public
931
     */
932
    function getCallback() {
933
        return $this->callback;
934
    }
935
 
936
    // }}}
937
    // {{{ getMessage()
938
 
939
 
940
    /**
941
     * Get the error message from an error object.
942
     *
943
     * @return  string  full error message
944
     * @access public
945
     */
946
    function getMessage()
947
    {
948
        return ($this->error_message_prefix . $this->message);
949
    }
950
 
951
 
952
    // }}}
953
    // {{{ getCode()
954
 
955
    /**
956
     * Get error code from an error object
957
     *
958
     * @return int error code
959
     * @access public
960
     */
961
     function getCode()
962
     {
963
        return $this->code;
964
     }
965
 
966
    // }}}
967
    // {{{ getType()
968
 
969
    /**
970
     * Get the name of this error/exception.
971
     *
972
     * @return string error/exception name (type)
973
     * @access public
974
     */
975
    function getType()
976
    {
977
        return get_class($this);
978
    }
979
 
980
    // }}}
981
    // {{{ getUserInfo()
982
 
983
    /**
984
     * Get additional user-supplied information.
985
     *
986
     * @return string user-supplied information
987
     * @access public
988
     */
989
    function getUserInfo()
990
    {
991
        return $this->userinfo;
992
    }
993
 
994
    // }}}
995
    // {{{ getDebugInfo()
996
 
997
    /**
998
     * Get additional debug information supplied by the application.
999
     *
1000
     * @return string debug information
1001
     * @access public
1002
     */
1003
    function getDebugInfo()
1004
    {
1005
        return $this->getUserInfo();
1006
    }
1007
 
1008
    // }}}
1009
    // {{{ getBacktrace()
1010
 
1011
    /**
1012
     * Get the call backtrace from where the error was generated.
1013
     * Supported with PHP 4.3.0 or newer.
1014
     *
1015
     * @param int $frame (optional) what frame to fetch
1016
     * @return array Backtrace, or NULL if not available.
1017
     * @access public
1018
     */
1019
    function getBacktrace($frame = null)
1020
    {
1173 jp_milcent 1021
        if (defined('PEAR_IGNORE_BACKTRACE')) {
1022
            return null;
1023
        }
320 jpm 1024
        if ($frame === null) {
1025
            return $this->backtrace;
1026
        }
1027
        return $this->backtrace[$frame];
1028
    }
1029
 
1030
    // }}}
1031
    // {{{ addUserInfo()
1032
 
1033
    function addUserInfo($info)
1034
    {
1035
        if (empty($this->userinfo)) {
1036
            $this->userinfo = $info;
1037
        } else {
1038
            $this->userinfo .= " ** $info";
1039
        }
1040
    }
1041
 
1042
    // }}}
1043
    // {{{ toString()
1044
 
1045
    /**
1046
     * Make a string representation of this object.
1047
     *
1048
     * @return string a string with an object summary
1049
     * @access public
1050
     */
1051
    function toString() {
1052
        $modes = array();
1053
        $levels = array(E_USER_NOTICE  => 'notice',
1054
                        E_USER_WARNING => 'warning',
1055
                        E_USER_ERROR   => 'error');
1056
        if ($this->mode & PEAR_ERROR_CALLBACK) {
1057
            if (is_array($this->callback)) {
1058
                $callback = (is_object($this->callback[0]) ?
1059
                    strtolower(get_class($this->callback[0])) :
1060
                    $this->callback[0]) . '::' .
1061
                    $this->callback[1];
1062
            } else {
1063
                $callback = $this->callback;
1064
            }
1065
            return sprintf('[%s: message="%s" code=%d mode=callback '.
1066
                           'callback=%s prefix="%s" info="%s"]',
1067
                           strtolower(get_class($this)), $this->message, $this->code,
1068
                           $callback, $this->error_message_prefix,
1069
                           $this->userinfo);
1070
        }
1071
        if ($this->mode & PEAR_ERROR_PRINT) {
1072
            $modes[] = 'print';
1073
        }
1074
        if ($this->mode & PEAR_ERROR_TRIGGER) {
1075
            $modes[] = 'trigger';
1076
        }
1077
        if ($this->mode & PEAR_ERROR_DIE) {
1078
            $modes[] = 'die';
1079
        }
1080
        if ($this->mode & PEAR_ERROR_RETURN) {
1081
            $modes[] = 'return';
1082
        }
1083
        return sprintf('[%s: message="%s" code=%d mode=%s level=%s '.
1084
                       'prefix="%s" info="%s"]',
1085
                       strtolower(get_class($this)), $this->message, $this->code,
1086
                       implode("|", $modes), $levels[$this->level],
1087
                       $this->error_message_prefix,
1088
                       $this->userinfo);
1089
    }
1090
 
1091
    // }}}
1092
}
1093
 
1094
/*
1095
 * Local Variables:
1096
 * mode: php
1097
 * tab-width: 4
1098
 * c-basic-offset: 4
1099
 * End:
1100
 */
1101
?>