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<?php
/**
* PEAR, the PHP Extension and Application Repository
*
* PEAR class and PEAR_Error class
*
* PHP versions 4 and 5
*
* LICENSE: This source file is subject to version 3.0 of the PHP license
* that is available through the world-wide-web at the following URI:
* http://www.php.net/license/3_0.txt. If you did not receive a copy of
* the PHP License and are unable to obtain it through the web, please
* send a note to license@php.net so we can mail you a copy immediately.
*
* @category pear
* @package PEAR
* @author Sterling Hughes <sterling@php.net>
* @author Stig Bakken <ssb@php.net>
* @author Tomas V.V.Cox <cox@idecnet.com>
* @author Greg Beaver <cellog@php.net>
* @copyright 1997-2008 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version CVS: $Id: PEAR.php,v 1.104 2008/01/03 20:26:34 cellog Exp $
* @link http://pear.php.net/package/PEAR
* @since File available since Release 0.1
*/
/**#@+
* ERROR constants
*/
define('PEAR_ERROR_RETURN', 1);
define('PEAR_ERROR_PRINT', 2);
define('PEAR_ERROR_TRIGGER', 4);
define('PEAR_ERROR_DIE', 8);
define('PEAR_ERROR_CALLBACK', 16);
/**
* WARNING: obsolete
* @deprecated
*/
define('PEAR_ERROR_EXCEPTION', 32);
/**#@-*/
define('PEAR_ZE2', (function_exists('version_compare') &&
version_compare(zend_version(), "2-dev", "ge")));
if (substr(PHP_OS, 0, 3) == 'WIN') {
define('OS_WINDOWS', true);
define('OS_UNIX', false);
define('PEAR_OS', 'Windows');
} else {
define('OS_WINDOWS', false);
define('OS_UNIX', true);
define('PEAR_OS', 'Unix'); // blatant assumption
}
// instant backwards compatibility
if (!defined('PATH_SEPARATOR')) {
if (OS_WINDOWS) {
define('PATH_SEPARATOR', ';');
} else {
define('PATH_SEPARATOR', ':');
}
}
$GLOBALS['_PEAR_default_error_mode'] = PEAR_ERROR_RETURN;
$GLOBALS['_PEAR_default_error_options'] = E_USER_NOTICE;
$GLOBALS['_PEAR_destructor_object_list'] = array();
$GLOBALS['_PEAR_shutdown_funcs'] = array();
$GLOBALS['_PEAR_error_handler_stack'] = array();
@ini_set('track_errors', true);
/**
* Base class for other PEAR classes. Provides rudimentary
* emulation of destructors.
*
* If you want a destructor in your class, inherit PEAR and make a
* destructor method called _yourclassname (same name as the
* constructor, but with a "_" prefix). Also, in your constructor you
* have to call the PEAR constructor: $this->PEAR();.
* The destructor method will be called without parameters. Note that
* at in some SAPI implementations (such as Apache), any output during
* the request shutdown (in which destructors are called) seems to be
* discarded. If you need to get any debug information from your
* destructor, use error_log(), syslog() or something similar.
*
* IMPORTANT! To use the emulated destructors you need to create the
* objects by reference: $obj =& new PEAR_child;
*
* @category pear
* @package PEAR
* @author Stig Bakken <ssb@php.net>
* @author Tomas V.V. Cox <cox@idecnet.com>
* @author Greg Beaver <cellog@php.net>
* @copyright 1997-2006 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version Release: 1.7.2
* @link http://pear.php.net/package/PEAR
* @see PEAR_Error
* @since Class available since PHP 4.0.2
* @link http://pear.php.net/manual/en/core.pear.php#core.pear.pear
*/
class PEAR
{
// {{{ properties
/**
* Whether to enable internal debug messages.
*
* @var bool
* @access private
*/
var $_debug = false;
/**
* Default error mode for this object.
*
* @var int
* @access private
*/
var $_default_error_mode = null;
/**
* Default error options used for this object when error mode
* is PEAR_ERROR_TRIGGER.
*
* @var int
* @access private
*/
var $_default_error_options = null;
/**
* Default error handler (callback) for this object, if error mode is
* PEAR_ERROR_CALLBACK.
*
* @var string
* @access private
*/
var $_default_error_handler = '';
/**
* Which class to use for error objects.
*
* @var string
* @access private
*/
var $_error_class = 'PEAR_Error';
/**
* An array of expected errors.
*
* @var array
* @access private
*/
var $_expected_errors = array();
// }}}
// {{{ constructor
/**
* Constructor. Registers this object in
* $_PEAR_destructor_object_list for destructor emulation if a
* destructor object exists.
*
* @param string $error_class (optional) which class to use for
* error objects, defaults to PEAR_Error.
* @access public
* @return void
*/
function PEAR($error_class = null)
{
$classname = strtolower(get_class($this));
if ($this->_debug) {
print "PEAR constructor called, class=$classname\n";
}
if ($error_class !== null) {
$this->_error_class = $error_class;
}
while ($classname && strcasecmp($classname, "pear")) {
$destructor = "_$classname";
if (method_exists($this, $destructor)) {
global $_PEAR_destructor_object_list;
$_PEAR_destructor_object_list[] = &$this;
if (!isset($GLOBALS['_PEAR_SHUTDOWN_REGISTERED'])) {
register_shutdown_function("_PEAR_call_destructors");
$GLOBALS['_PEAR_SHUTDOWN_REGISTERED'] = true;
}
break;
} else {
$classname = get_parent_class($classname);
}
}
}
// }}}
// {{{ destructor
/**
* Destructor (the emulated type of...). Does nothing right now,
* but is included for forward compatibility, so subclass
* destructors should always call it.
*
* See the note in the class desciption about output from
* destructors.
*
* @access public
* @return void
*/
function _PEAR() {
if ($this->_debug) {
printf("PEAR destructor called, class=%s\n", strtolower(get_class($this)));
}
}
// }}}
// {{{ getStaticProperty()
/**
* If you have a class that's mostly/entirely static, and you need static
* properties, you can use this method to simulate them. Eg. in your method(s)
* do this: $myVar = &PEAR::getStaticProperty('myclass', 'myVar');
* You MUST use a reference, or they will not persist!
*
* @access public
* @param string $class The calling classname, to prevent clashes
* @param string $var The variable to retrieve.
* @return mixed A reference to the variable. If not set it will be
* auto initialised to NULL.
*/
function &getStaticProperty($class, $var)
{
static $properties;
if (!isset($properties[$class])) {
$properties[$class] = array();
}
if (!array_key_exists($var, $properties[$class])) {
$properties[$class][$var] = null;
}
return $properties[$class][$var];
}
// }}}
// {{{ registerShutdownFunc()
/**
* Use this function to register a shutdown method for static
* classes.
*
* @access public
* @param mixed $func The function name (or array of class/method) to call
* @param mixed $args The arguments to pass to the function
* @return void
*/
function registerShutdownFunc($func, $args = array())
{
// if we are called statically, there is a potential
// that no shutdown func is registered. Bug #6445
if (!isset($GLOBALS['_PEAR_SHUTDOWN_REGISTERED'])) {
register_shutdown_function("_PEAR_call_destructors");
$GLOBALS['_PEAR_SHUTDOWN_REGISTERED'] = true;
}
$GLOBALS['_PEAR_shutdown_funcs'][] = array($func, $args);
}
// }}}
// {{{ isError()
/**
* Tell whether a value is a PEAR error.
*
* @param mixed $data the value to test
* @param int $code if $data is an error object, return true
* only if $code is a string and
* $obj->getMessage() == $code or
* $code is an integer and $obj->getCode() == $code
* @access public
* @return bool true if parameter is an error
*/
function isError($data, $code = null)
{
if (is_a($data, 'PEAR_Error')) {
if (is_null($code)) {
return true;
} elseif (is_string($code)) {
return $data->getMessage() == $code;
} else {
return $data->getCode() == $code;
}
}
return false;
}
// }}}
// {{{ setErrorHandling()
/**
* Sets how errors generated by this object should be handled.
* Can be invoked both in objects and statically. If called
* statically, setErrorHandling sets the default behaviour for all
* PEAR objects. If called in an object, setErrorHandling sets
* the default behaviour for that object.
*
* @param int $mode
* One of PEAR_ERROR_RETURN, PEAR_ERROR_PRINT,
* PEAR_ERROR_TRIGGER, PEAR_ERROR_DIE,
* PEAR_ERROR_CALLBACK or PEAR_ERROR_EXCEPTION.
*
* @param mixed $options
* When $mode is PEAR_ERROR_TRIGGER, this is the error level (one
* of E_USER_NOTICE, E_USER_WARNING or E_USER_ERROR).
*
* When $mode is PEAR_ERROR_CALLBACK, this parameter is expected
* to be the callback function or method. A callback
* function is a string with the name of the function, a
* callback method is an array of two elements: the element
* at index 0 is the object, and the element at index 1 is
* the name of the method to call in the object.
*
* When $mode is PEAR_ERROR_PRINT or PEAR_ERROR_DIE, this is
* a printf format string used when printing the error
* message.
*
* @access public
* @return void
* @see PEAR_ERROR_RETURN
* @see PEAR_ERROR_PRINT
* @see PEAR_ERROR_TRIGGER
* @see PEAR_ERROR_DIE
* @see PEAR_ERROR_CALLBACK
* @see PEAR_ERROR_EXCEPTION
*
* @since PHP 4.0.5
*/
function setErrorHandling($mode = null, $options = null)
{
if (isset($this) && is_a($this, 'PEAR')) {
$setmode = &$this->_default_error_mode;
$setoptions = &$this->_default_error_options;
} else {
$setmode = &$GLOBALS['_PEAR_default_error_mode'];
$setoptions = &$GLOBALS['_PEAR_default_error_options'];
}
switch ($mode) {
case PEAR_ERROR_EXCEPTION:
case PEAR_ERROR_RETURN:
case PEAR_ERROR_PRINT:
case PEAR_ERROR_TRIGGER:
case PEAR_ERROR_DIE:
case null:
$setmode = $mode;
$setoptions = $options;
break;
case PEAR_ERROR_CALLBACK:
$setmode = $mode;
// class/object method callback
if (is_callable($options)) {
$setoptions = $options;
} else {
trigger_error("invalid error callback", E_USER_WARNING);
}
break;
default:
trigger_error("invalid error mode", E_USER_WARNING);
break;
}
}
// }}}
// {{{ expectError()
/**
* This method is used to tell which errors you expect to get.
* Expected errors are always returned with error mode
* PEAR_ERROR_RETURN. Expected error codes are stored in a stack,
* and this method pushes a new element onto it. The list of
* expected errors are in effect until they are popped off the
* stack with the popExpect() method.
*
* Note that this method can not be called statically
*
* @param mixed $code a single error code or an array of error codes to expect
*
* @return int the new depth of the "expected errors" stack
* @access public
*/
function expectError($code = '*')
{
if (is_array($code)) {
array_push($this->_expected_errors, $code);
} else {
array_push($this->_expected_errors, array($code));
}
return sizeof($this->_expected_errors);
}
// }}}
// {{{ popExpect()
/**
* This method pops one element off the expected error codes
* stack.
*
* @return array the list of error codes that were popped
*/
function popExpect()
{
return array_pop($this->_expected_errors);
}
// }}}
// {{{ _checkDelExpect()
/**
* This method checks unsets an error code if available
*
* @param mixed error code
* @return bool true if the error code was unset, false otherwise
* @access private
* @since PHP 4.3.0
*/
function _checkDelExpect($error_code)
{
$deleted = false;
foreach ($this->_expected_errors AS $key => $error_array) {
if (in_array($error_code, $error_array)) {
unset($this->_expected_errors[$key][array_search($error_code, $error_array)]);
$deleted = true;
}
// clean up empty arrays
if (0 == count($this->_expected_errors[$key])) {
unset($this->_expected_errors[$key]);
}
}
return $deleted;
}
// }}}
// {{{ delExpect()
/**
* This method deletes all occurences of the specified element from
* the expected error codes stack.
*
* @param mixed $error_code error code that should be deleted
* @return mixed list of error codes that were deleted or error
* @access public
* @since PHP 4.3.0
*/
function delExpect($error_code)
{
$deleted = false;
if ((is_array($error_code) && (0 != count($error_code)))) {
// $error_code is a non-empty array here;
// we walk through it trying to unset all
// values
foreach($error_code as $key => $error) {
if ($this->_checkDelExpect($error)) {
$deleted = true;
} else {
$deleted = false;
}
}
return $deleted ? true : PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME
} elseif (!empty($error_code)) {
// $error_code comes alone, trying to unset it
if ($this->_checkDelExpect($error_code)) {
return true;
} else {
return PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME
}
} else {
// $error_code is empty
return PEAR::raiseError("The expected error you submitted is empty"); // IMPROVE ME
}
}
// }}}
// {{{ raiseError()
/**
* This method is a wrapper that returns an instance of the
* configured error class with this object's default error
* handling applied. If the $mode and $options parameters are not
* specified, the object's defaults are used.
*
* @param mixed $message a text error message or a PEAR error object
*
* @param int $code a numeric error code (it is up to your class
* to define these if you want to use codes)
*
* @param int $mode One of PEAR_ERROR_RETURN, PEAR_ERROR_PRINT,
* PEAR_ERROR_TRIGGER, PEAR_ERROR_DIE,
* PEAR_ERROR_CALLBACK, PEAR_ERROR_EXCEPTION.
*
* @param mixed $options If $mode is PEAR_ERROR_TRIGGER, this parameter
* specifies the PHP-internal error level (one of
* E_USER_NOTICE, E_USER_WARNING or E_USER_ERROR).
* If $mode is PEAR_ERROR_CALLBACK, this
* parameter specifies the callback function or
* method. In other error modes this parameter
* is ignored.
*
* @param string $userinfo If you need to pass along for example debug
* information, this parameter is meant for that.
*
* @param string $error_class The returned error object will be
* instantiated from this class, if specified.
*
* @param bool $skipmsg If true, raiseError will only pass error codes,
* the error message parameter will be dropped.
*
* @access public
* @return object a PEAR error object
* @see PEAR::setErrorHandling
* @since PHP 4.0.5
*/
function &raiseError($message = null,
$code = null,
$mode = null,
$options = null,
$userinfo = null,
$error_class = null,
$skipmsg = false)
{
// The error is yet a PEAR error object
if (is_object($message)) {
$code = $message->getCode();
$userinfo = $message->getUserInfo();
$error_class = $message->getType();
$message->error_message_prefix = '';
$message = $message->getMessage();
}
if (isset($this) && isset($this->_expected_errors) && sizeof($this->_expected_errors) > 0 && sizeof($exp = end($this->_expected_errors))) {
if ($exp[0] == "*" ||
(is_int(reset($exp)) && in_array($code, $exp)) ||
(is_string(reset($exp)) && in_array($message, $exp))) {
$mode = PEAR_ERROR_RETURN;
}
}
// No mode given, try global ones
if ($mode === null) {
// Class error handler
if (isset($this) && isset($this->_default_error_mode)) {
$mode = $this->_default_error_mode;
$options = $this->_default_error_options;
// Global error handler
} elseif (isset($GLOBALS['_PEAR_default_error_mode'])) {
$mode = $GLOBALS['_PEAR_default_error_mode'];
$options = $GLOBALS['_PEAR_default_error_options'];
}
}
if ($error_class !== null) {
$ec = $error_class;
} elseif (isset($this) && isset($this->_error_class)) {
$ec = $this->_error_class;
} else {
$ec = 'PEAR_Error';
}
if (intval(PHP_VERSION) < 5) {
// little non-eval hack to fix bug #12147
include 'PEAR/FixPHP5PEARWarnings.php';
return $a;
}
if ($skipmsg) {
$a = new $ec($code, $mode, $options, $userinfo);
} else {
$a = new $ec($message, $code, $mode, $options, $userinfo);
}
return $a;
}
// }}}
// {{{ throwError()
/**
* Simpler form of raiseError with fewer options. In most cases
* message, code and userinfo are enough.
*
* @param string $message
*
*/
function &throwError($message = null,
$code = null,
$userinfo = null)
{
if (isset($this) && is_a($this, 'PEAR')) {
$a = &$this->raiseError($message, $code, null, null, $userinfo);
return $a;
} else {
$a = &PEAR::raiseError($message, $code, null, null, $userinfo);
return $a;
}
}
// }}}
function staticPushErrorHandling($mode, $options = null)
{
$stack = &$GLOBALS['_PEAR_error_handler_stack'];
$def_mode = &$GLOBALS['_PEAR_default_error_mode'];
$def_options = &$GLOBALS['_PEAR_default_error_options'];
$stack[] = array($def_mode, $def_options);
switch ($mode) {
case PEAR_ERROR_EXCEPTION:
case PEAR_ERROR_RETURN:
case PEAR_ERROR_PRINT:
case PEAR_ERROR_TRIGGER:
case PEAR_ERROR_DIE:
case null:
$def_mode = $mode;
$def_options = $options;
break;
case PEAR_ERROR_CALLBACK:
$def_mode = $mode;
// class/object method callback
if (is_callable($options)) {
$def_options = $options;
} else {
trigger_error("invalid error callback", E_USER_WARNING);
}
break;
default:
trigger_error("invalid error mode", E_USER_WARNING);
break;
}
$stack[] = array($mode, $options);
return true;
}
function staticPopErrorHandling()
{
$stack = &$GLOBALS['_PEAR_error_handler_stack'];
$setmode = &$GLOBALS['_PEAR_default_error_mode'];
$setoptions = &$GLOBALS['_PEAR_default_error_options'];
array_pop($stack);
list($mode, $options) = $stack[sizeof($stack) - 1];
array_pop($stack);
switch ($mode) {
case PEAR_ERROR_EXCEPTION:
case PEAR_ERROR_RETURN:
case PEAR_ERROR_PRINT:
case PEAR_ERROR_TRIGGER:
case PEAR_ERROR_DIE:
case null:
$setmode = $mode;
$setoptions = $options;
break;
case PEAR_ERROR_CALLBACK:
$setmode = $mode;
// class/object method callback
if (is_callable($options)) {
$setoptions = $options;
} else {
trigger_error("invalid error callback", E_USER_WARNING);
}
break;
default:
trigger_error("invalid error mode", E_USER_WARNING);
break;
}
return true;
}
// {{{ pushErrorHandling()
/**
* Push a new error handler on top of the error handler options stack. With this
* you can easily override the actual error handler for some code and restore
* it later with popErrorHandling.
*
* @param mixed $mode (same as setErrorHandling)
* @param mixed $options (same as setErrorHandling)
*
* @return bool Always true
*
* @see PEAR::setErrorHandling
*/
function pushErrorHandling($mode, $options = null)
{
$stack = &$GLOBALS['_PEAR_error_handler_stack'];
if (isset($this) && is_a($this, 'PEAR')) {
$def_mode = &$this->_default_error_mode;
$def_options = &$this->_default_error_options;
} else {
$def_mode = &$GLOBALS['_PEAR_default_error_mode'];
$def_options = &$GLOBALS['_PEAR_default_error_options'];
}
$stack[] = array($def_mode, $def_options);
if (isset($this) && is_a($this, 'PEAR')) {
$this->setErrorHandling($mode, $options);
} else {
PEAR::setErrorHandling($mode, $options);
}
$stack[] = array($mode, $options);
return true;
}
// }}}
// {{{ popErrorHandling()
/**
* Pop the last error handler used
*
* @return bool Always true
*
* @see PEAR::pushErrorHandling
*/
function popErrorHandling()
{
$stack = &$GLOBALS['_PEAR_error_handler_stack'];
array_pop($stack);
list($mode, $options) = $stack[sizeof($stack) - 1];
array_pop($stack);
if (isset($this) && is_a($this, 'PEAR')) {
$this->setErrorHandling($mode, $options);
} else {
PEAR::setErrorHandling($mode, $options);
}
return true;
}
// }}}
// {{{ loadExtension()
/**
* OS independant PHP extension load. Remember to take care
* on the correct extension name for case sensitive OSes.
*
* @param string $ext The extension name
* @return bool Success or not on the dl() call
*/
function loadExtension($ext)
{
if (!extension_loaded($ext)) {
// if either returns true dl() will produce a FATAL error, stop that
if ((ini_get('enable_dl') != 1) || (ini_get('safe_mode') == 1)) {
return false;
}
if (OS_WINDOWS) {
$suffix = '.dll';
} elseif (PHP_OS == 'HP-UX') {
$suffix = '.sl';
} elseif (PHP_OS == 'AIX') {
$suffix = '.a';
} elseif (PHP_OS == 'OSX') {
$suffix = '.bundle';
} else {
$suffix = '.so';
}
return @dl('php_'.$ext.$suffix) || @dl($ext.$suffix);
}
return true;
}
// }}}
}
// {{{ _PEAR_call_destructors()
function _PEAR_call_destructors()
{
global $_PEAR_destructor_object_list;
if (is_array($_PEAR_destructor_object_list) &&
sizeof($_PEAR_destructor_object_list))
{
reset($_PEAR_destructor_object_list);
if (PEAR::getStaticProperty('PEAR', 'destructlifo')) {
$_PEAR_destructor_object_list = array_reverse($_PEAR_destructor_object_list);
}
while (list($k, $objref) = each($_PEAR_destructor_object_list)) {
$classname = get_class($objref);
while ($classname) {
$destructor = "_$classname";
if (method_exists($objref, $destructor)) {
$objref->$destructor();
break;
} else {
$classname = get_parent_class($classname);
}
}
}
// Empty the object list to ensure that destructors are
// not called more than once.
$_PEAR_destructor_object_list = array();
}
// Now call the shutdown functions
if (is_array($GLOBALS['_PEAR_shutdown_funcs']) AND !empty($GLOBALS['_PEAR_shutdown_funcs'])) {
foreach ($GLOBALS['_PEAR_shutdown_funcs'] as $value) {
call_user_func_array($value[0], $value[1]);
}
}
}
// }}}
/**
* Standard PEAR error class for PHP 4
*
* This class is supserseded by {@link PEAR_Exception} in PHP 5
*
* @category pear
* @package PEAR
* @author Stig Bakken <ssb@php.net>
* @author Tomas V.V. Cox <cox@idecnet.com>
* @author Gregory Beaver <cellog@php.net>
* @copyright 1997-2006 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version Release: 1.7.2
* @link http://pear.php.net/manual/en/core.pear.pear-error.php
* @see PEAR::raiseError(), PEAR::throwError()
* @since Class available since PHP 4.0.2
*/
class PEAR_Error
{
// {{{ properties
var $error_message_prefix = '';
var $mode = PEAR_ERROR_RETURN;
var $level = E_USER_NOTICE;
var $code = -1;
var $message = '';
var $userinfo = '';
var $backtrace = null;
// }}}
// {{{ constructor
/**
* PEAR_Error constructor
*
* @param string $message message
*
* @param int $code (optional) error code
*
* @param int $mode (optional) error mode, one of: PEAR_ERROR_RETURN,
* PEAR_ERROR_PRINT, PEAR_ERROR_DIE, PEAR_ERROR_TRIGGER,
* PEAR_ERROR_CALLBACK or PEAR_ERROR_EXCEPTION
*
* @param mixed $options (optional) error level, _OR_ in the case of
* PEAR_ERROR_CALLBACK, the callback function or object/method
* tuple.
*
* @param string $userinfo (optional) additional user/debug info
*
* @access public
*
*/
function PEAR_Error($message = 'unknown error', $code = null,
$mode = null, $options = null, $userinfo = null)
{
if ($mode === null) {
$mode = PEAR_ERROR_RETURN;
}
$this->message = $message;
$this->code = $code;
$this->mode = $mode;
$this->userinfo = $userinfo;
if (!PEAR::getStaticProperty('PEAR_Error', 'skiptrace')) {
$this->backtrace = debug_backtrace();
if (isset($this->backtrace[0]) && isset($this->backtrace[0]['object'])) {
unset($this->backtrace[0]['object']);
}
}
if ($mode & PEAR_ERROR_CALLBACK) {
$this->level = E_USER_NOTICE;
$this->callback = $options;
} else {
if ($options === null) {
$options = E_USER_NOTICE;
}
$this->level = $options;
$this->callback = null;
}
if ($this->mode & PEAR_ERROR_PRINT) {
if (is_null($options) || is_int($options)) {
$format = "%s";
} else {
$format = $options;
}
printf($format, $this->getMessage());
}
if ($this->mode & PEAR_ERROR_TRIGGER) {
trigger_error($this->getMessage(), $this->level);
}
if ($this->mode & PEAR_ERROR_DIE) {
$msg = $this->getMessage();
if (is_null($options) || is_int($options)) {
$format = "%s";
if (substr($msg, -1) != "\n") {
$msg .= "\n";
}
} else {
$format = $options;
}
die(sprintf($format, $msg));
}
if ($this->mode & PEAR_ERROR_CALLBACK) {
if (is_callable($this->callback)) {
call_user_func($this->callback, $this);
}
}
if ($this->mode & PEAR_ERROR_EXCEPTION) {
trigger_error("PEAR_ERROR_EXCEPTION is obsolete, use class PEAR_Exception for exceptions", E_USER_WARNING);
eval('$e = new Exception($this->message, $this->code);throw($e);');
}
}
// }}}
// {{{ getMode()
/**
* Get the error mode from an error object.
*
* @return int error mode
* @access public
*/
function getMode() {
return $this->mode;
}
// }}}
// {{{ getCallback()
/**
* Get the callback function/method from an error object.
*
* @return mixed callback function or object/method array
* @access public
*/
function getCallback() {
return $this->callback;
}
// }}}
// {{{ getMessage()
/**
* Get the error message from an error object.
*
* @return string full error message
* @access public
*/
function getMessage()
{
return ($this->error_message_prefix . $this->message);
}
// }}}
// {{{ getCode()
/**
* Get error code from an error object
*
* @return int error code
* @access public
*/
function getCode()
{
return $this->code;
}
// }}}
// {{{ getType()
/**
* Get the name of this error/exception.
*
* @return string error/exception name (type)
* @access public
*/
function getType()
{
return get_class($this);
}
// }}}
// {{{ getUserInfo()
/**
* Get additional user-supplied information.
*
* @return string user-supplied information
* @access public
*/
function getUserInfo()
{
return $this->userinfo;
}
// }}}
// {{{ getDebugInfo()
/**
* Get additional debug information supplied by the application.
*
* @return string debug information
* @access public
*/
function getDebugInfo()
{
return $this->getUserInfo();
}
// }}}
// {{{ getBacktrace()
/**
* Get the call backtrace from where the error was generated.
* Supported with PHP 4.3.0 or newer.
*
* @param int $frame (optional) what frame to fetch
* @return array Backtrace, or NULL if not available.
* @access public
*/
function getBacktrace($frame = null)
{
if (defined('PEAR_IGNORE_BACKTRACE')) {
return null;
}
if ($frame === null) {
return $this->backtrace;
}
return $this->backtrace[$frame];
}
// }}}
// {{{ addUserInfo()
function addUserInfo($info)
{
if (empty($this->userinfo)) {
$this->userinfo = $info;
} else {
$this->userinfo .= " ** $info";
}
}
// }}}
// {{{ toString()
function __toString()
{
return $this->getMessage();
}
// }}}
// {{{ toString()
/**
* Make a string representation of this object.
*
* @return string a string with an object summary
* @access public
*/
function toString() {
$modes = array();
$levels = array(E_USER_NOTICE => 'notice',
E_USER_WARNING => 'warning',
E_USER_ERROR => 'error');
if ($this->mode & PEAR_ERROR_CALLBACK) {
if (is_array($this->callback)) {
$callback = (is_object($this->callback[0]) ?
strtolower(get_class($this->callback[0])) :
$this->callback[0]) . '::' .
$this->callback[1];
} else {
$callback = $this->callback;
}
return sprintf('[%s: message="%s" code=%d mode=callback '.
'callback=%s prefix="%s" info="%s"]',
strtolower(get_class($this)), $this->message, $this->code,
$callback, $this->error_message_prefix,
$this->userinfo);
}
if ($this->mode & PEAR_ERROR_PRINT) {
$modes[] = 'print';
}
if ($this->mode & PEAR_ERROR_TRIGGER) {
$modes[] = 'trigger';
}
if ($this->mode & PEAR_ERROR_DIE) {
$modes[] = 'die';
}
if ($this->mode & PEAR_ERROR_RETURN) {
$modes[] = 'return';
}
return sprintf('[%s: message="%s" code=%d mode=%s level=%s '.
'prefix="%s" info="%s"]',
strtolower(get_class($this)), $this->message, $this->code,
implode("|", $modes), $levels[$this->level],
$this->error_message_prefix,
$this->userinfo);
}
// }}}
}
/*
* Local Variables:
* mode: php
* tab-width: 4
* c-basic-offset: 4
* End:
*/
/* vim: set expandtab tabstop=4 shiftwidth=4 foldmethod=marker: */
/**
* PEAR_Exception
*
* PHP version 5
*
* @category PEAR
* @package PEAR_Exception
* @author Tomas V. V. Cox <cox@idecnet.com>
* @author Hans Lellelid <hans@velum.net>
* @author Bertrand Mansion <bmansion@mamasam.com>
* @author Greg Beaver <cellog@php.net>
* @copyright 1997-2009 The Authors
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @link http://pear.php.net/package/PEAR_Exception
* @since File available since Release 1.0.0
*/
/**
* Base PEAR_Exception Class
*
* 1) Features:
*
* - Nestable exceptions (throw new PEAR_Exception($msg, $prev_exception))
* - Definable triggers, shot when exceptions occur
* - Pretty and informative error messages
* - Added more context info available (like class, method or cause)
* - cause can be a PEAR_Exception or an array of mixed
* PEAR_Exceptions/PEAR_ErrorStack warnings
* - callbacks for specific exception classes and their children
*
* 2) Ideas:
*
* - Maybe a way to define a 'template' for the output
*
* 3) Inherited properties from PHP Exception Class:
*
* protected $message
* protected $code
* protected $line
* protected $file
* private $trace
*
* 4) Inherited methods from PHP Exception Class:
*
* __clone
* __construct
* getMessage
* getCode
* getFile
* getLine
* getTraceSafe
* getTraceSafeAsString
* __toString
*
* 5) Usage example
*
* <code>
* require_once 'PEAR/Exception.php';
*
* class Test {
* function foo() {
* throw new PEAR_Exception('Error Message', ERROR_CODE);
* }
* }
*
* function myLogger($pear_exception) {
* echo $pear_exception->getMessage();
* }
* // each time a exception is thrown the 'myLogger' will be called
* // (its use is completely optional)
* PEAR_Exception::addObserver('myLogger');
* $test = new Test;
* try {
* $test->foo();
* } catch (PEAR_Exception $e) {
* print $e;
* }
* </code>
*
* @category PEAR
* @package PEAR_Exception
* @author Tomas V.V.Cox <cox@idecnet.com>
* @author Hans Lellelid <hans@velum.net>
* @author Bertrand Mansion <bmansion@mamasam.com>
* @author Greg Beaver <cellog@php.net>
* @copyright 1997-2009 The Authors
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version Release: 1.0.0
* @link http://pear.php.net/package/PEAR_Exception
* @since Class available since Release 1.0.0
*/
class PEAR_Exception extends Exception
{
const OBSERVER_PRINT = -2;
const OBSERVER_TRIGGER = -4;
const OBSERVER_DIE = -8;
protected $cause;
private static $_observers = array();
private static $_uniqueid = 0;
private $_trace;
/**
* Supported signatures:
* - PEAR_Exception(string $message);
* - PEAR_Exception(string $message, int $code);
* - PEAR_Exception(string $message, Exception $cause);
* - PEAR_Exception(string $message, Exception $cause, int $code);
* - PEAR_Exception(string $message, PEAR_Error $cause);
* - PEAR_Exception(string $message, PEAR_Error $cause, int $code);
* - PEAR_Exception(string $message, array $causes);
* - PEAR_Exception(string $message, array $causes, int $code);
*
* @param string $message exception message
* @param int|Exception|PEAR_Error|array|null $p2 exception cause
* @param int|null $p3 exception code or null
*/
public function __construct($message, $p2 = null, $p3 = null)
{
if (is_int($p2)) {
$code = $p2;
$this->cause = null;
} elseif (is_object($p2) || is_array($p2)) {
// using is_object allows both Exception and PEAR_Error
if (is_object($p2) && !($p2 instanceof Exception)) {
if (!class_exists('PEAR_Error') || !($p2 instanceof PEAR_Error)) {
throw new PEAR_Exception(
'exception cause must be Exception, ' .
'array, or PEAR_Error'
);
}
}
$code = $p3;
if (is_array($p2) && isset($p2['message'])) {
// fix potential problem of passing in a single warning
$p2 = array($p2);
}
$this->cause = $p2;
} else {
$code = null;
$this->cause = null;
}
parent::__construct($message, $code);
$this->signal();
}
/**
* Add an exception observer
*
* @param mixed $callback - A valid php callback, see php func is_callable()
* - A PEAR_Exception::OBSERVER_* constant
* - An array(const PEAR_Exception::OBSERVER_*,
* mixed $options)
* @param string $label The name of the observer. Use this if you want
* to remove it later with removeObserver()
*
* @return void
*/
public static function addObserver($callback, $label = 'default')
{
self::$_observers[$label] = $callback;
}
/**
* Remove an exception observer
*
* @param string $label Name of the observer
*
* @return void
*/
public static function removeObserver($label = 'default')
{
unset(self::$_observers[$label]);
}
/**
* Generate a unique ID for an observer
*
* @return int unique identifier for an observer
*/
public static function getUniqueId()
{
return self::$_uniqueid++;
}
/**
* Send a signal to all observers
*
* @return void
*/
protected function signal()
{
foreach (self::$_observers as $func) {
if (is_callable($func)) {
call_user_func($func, $this);
continue;
}
settype($func, 'array');
switch ($func[0]) {
case self::OBSERVER_PRINT :
$f = (isset($func[1])) ? $func[1] : '%s';
printf($f, $this->getMessage());
break;
case self::OBSERVER_TRIGGER :
$f = (isset($func[1])) ? $func[1] : E_USER_NOTICE;
trigger_error($this->getMessage(), $f);
break;
case self::OBSERVER_DIE :
$f = (isset($func[1])) ? $func[1] : '%s';
die(printf($f, $this->getMessage()));
break;
default:
trigger_error('invalid observer type', E_USER_WARNING);
}
}
}
/**
* Return specific error information that can be used for more detailed
* error messages or translation.
*
* This method may be overridden in child exception classes in order
* to add functionality not present in PEAR_Exception and is a placeholder
* to define API
*
* The returned array must be an associative array of parameter => value like so:
* <pre>
* array('name' => $name, 'context' => array(...))
* </pre>
*
* @return array
*/
public function getErrorData()
{
return array();
}
/**
* Returns the exception that caused this exception to be thrown
*
* @return Exception|array The context of the exception
*/
public function getCause()
{
return $this->cause;
}
/**
* Function must be public to call on caused exceptions
*
* @param array $causes Array that gets filled.
*
* @return void
*/
public function getCauseMessage(&$causes)
{
$trace = $this->getTraceSafe();
$cause = array('class' => get_class($this),
'message' => $this->message,
'file' => 'unknown',
'line' => 'unknown');
if (isset($trace[0])) {
if (isset($trace[0]['file'])) {
$cause['file'] = $trace[0]['file'];
$cause['line'] = $trace[0]['line'];
}
}
$causes[] = $cause;
if ($this->cause instanceof PEAR_Exception) {
$this->cause->getCauseMessage($causes);
} elseif ($this->cause instanceof Exception) {
$causes[] = array('class' => get_class($this->cause),
'message' => $this->cause->getMessage(),
'file' => $this->cause->getFile(),
'line' => $this->cause->getLine());
} elseif (class_exists('PEAR_Error') && $this->cause instanceof PEAR_Error) {
$causes[] = array('class' => get_class($this->cause),
'message' => $this->cause->getMessage(),
'file' => 'unknown',
'line' => 'unknown');
} elseif (is_array($this->cause)) {
foreach ($this->cause as $cause) {
if ($cause instanceof PEAR_Exception) {
$cause->getCauseMessage($causes);
} elseif ($cause instanceof Exception) {
$causes[] = array('class' => get_class($cause),
'message' => $cause->getMessage(),
'file' => $cause->getFile(),
'line' => $cause->getLine());
} elseif (class_exists('PEAR_Error')
&& $cause instanceof PEAR_Error
) {
$causes[] = array('class' => get_class($cause),
'message' => $cause->getMessage(),
'file' => 'unknown',
'line' => 'unknown');
} elseif (is_array($cause) && isset($cause['message'])) {
// PEAR_ErrorStack warning
$causes[] = array(
'class' => $cause['package'],
'message' => $cause['message'],
'file' => isset($cause['context']['file']) ?
$cause['context']['file'] :
'unknown',
'line' => isset($cause['context']['line']) ?
$cause['context']['line'] :
'unknown',
);
}
}
}
}
/**
* Build a backtrace and return it
*
* @return array Backtrace
*/
public function getTraceSafe()
{
if (!isset($this->_trace)) {
$this->_trace = $this->getTrace();
if (empty($this->_trace)) {
$backtrace = debug_backtrace();
$this->_trace = array($backtrace[count($backtrace)-1]);
}
}
return $this->_trace;
}
/**
* Gets the first class of the backtrace
*
* @return string Class name
*/
public function getErrorClass()
{
$trace = $this->getTraceSafe();
return $trace[0]['class'];
}
/**
* Gets the first method of the backtrace
*
* @return string Method/function name
*/
public function getErrorMethod()
{
$trace = $this->getTraceSafe();
return $trace[0]['function'];
}
/**
* Converts the exception to a string (HTML or plain text)
*
* @return string String representation
*
* @see toHtml()
* @see toText()
*/
public function __toString()
{
if (isset($_SERVER['REQUEST_URI'])) {
return $this->toHtml();
}
return $this->toText();
}
/**
* Generates a HTML representation of the exception
*
* @return string HTML code
*/
public function toHtml()
{
$trace = $this->getTraceSafe();
$causes = array();
$this->getCauseMessage($causes);
$html = '<table style="border: 1px" cellspacing="0">' . "\n";
foreach ($causes as $i => $cause) {
$html .= '<tr><td colspan="3" style="background: #ff9999">'
. str_repeat('-', $i) . ' <b>' . $cause['class'] . '</b>: '
. htmlspecialchars($cause['message'])
. ' in <b>' . $cause['file'] . '</b> '
. 'on line <b>' . $cause['line'] . '</b>'
. "</td></tr>\n";
}
$html .= '<tr><td colspan="3" style="background-color: #aaaaaa; text-align: center; font-weight: bold;">Exception trace</td></tr>' . "\n"
. '<tr><td style="text-align: center; background: #cccccc; width:20px; font-weight: bold;">#</td>'
. '<td style="text-align: center; background: #cccccc; font-weight: bold;">Function</td>'
. '<td style="text-align: center; background: #cccccc; font-weight: bold;">Location</td></tr>' . "\n";
foreach ($trace as $k => $v) {
$html .= '<tr><td style="text-align: center;">' . $k . '</td>'
. '<td>';
if (!empty($v['class'])) {
$html .= $v['class'] . $v['type'];
}
$html .= $v['function'];
$args = array();
if (!empty($v['args'])) {
foreach ($v['args'] as $arg) {
if (is_null($arg)) {
$args[] = 'null';
} else if (is_array($arg)) {
$args[] = 'Array';
} else if (is_object($arg)) {
$args[] = 'Object('.get_class($arg).')';
} else if (is_bool($arg)) {
$args[] = $arg ? 'true' : 'false';
} else if (is_int($arg) || is_double($arg)) {
$args[] = $arg;
} else {
$arg = (string)$arg;
$str = htmlspecialchars(substr($arg, 0, 16));
if (strlen($arg) > 16) {
$str .= '…';
}
$args[] = "'" . $str . "'";
}
}
}
$html .= '(' . implode(', ', $args) . ')'
. '</td>'
. '<td>' . (isset($v['file']) ? $v['file'] : 'unknown')
. ':' . (isset($v['line']) ? $v['line'] : 'unknown')
. '</td></tr>' . "\n";
}
$html .= '<tr><td style="text-align: center;">' . ($k+1) . '</td>'
. '<td>{main}</td>'
. '<td> </td></tr>' . "\n"
. '</table>';
return $html;
}
/**
* Generates text representation of the exception and stack trace
*
* @return string
*/
public function toText()
{
$causes = array();
$this->getCauseMessage($causes);
$causeMsg = '';
foreach ($causes as $i => $cause) {
$causeMsg .= str_repeat(' ', $i) . $cause['class'] . ': '
. $cause['message'] . ' in ' . $cause['file']
. ' on line ' . $cause['line'] . "\n";
}
return $causeMsg . $this->getTraceAsString();
}
}
?>