<?php


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);

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');
}

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);

class PEAR {
    var $_debug = false;
    var $_default_error_mode = null;
    var $_default_error_options = null;
    var $_default_error_handler = '';
    var $_error_class = 'PEAR_Error';
    var $_expected_errors = array();

    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);
            }
        }
    }

    function _PEAR() {
        if ($this->_debug) {
            printf("PEAR destructor called, class=%s\n", strtolower(get_class($this)));
        }
    }

    function & getStaticProperty($class, $var) {
        static $properties;
        return $properties[$class][$var];
    }

    function registerShutdownFunc($func, $args = array()) {
        if (!isset ($GLOBALS['_PEAR_SHUTDOWN_REGISTERED'])) {
            register_shutdown_function("_PEAR_call_destructors");
            $GLOBALS['_PEAR_SHUTDOWN_REGISTERED'] = true;
        }
        $GLOBALS['_PEAR_shutdown_funcs'][] = array($func, $args);
    }

    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;
    }

    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 = $mode;
                if (is_callable($options)) {
                    $setoptions = $options;
                }
                else {
                    trigger_error("invalid error callback", E_USER_WARNING);
                }
                break;

            default :
                trigger_error("invalid error mode", E_USER_WARNING);
                break;
        }
    }

    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);
    }

    function popExpect() {
        return array_pop($this->_expected_errors);
    }

    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;
            }

            if (0 == count($this->_expected_errors[$key])) {
                unset ($this->_expected_errors[$key]);
            }
        }
        return $deleted;
    }

    function delExpect($error_code) {
        $deleted = false;

        if ((is_array($error_code) && (0 != count($error_code)))) {
            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)) {
            if ($this->_checkDelExpect($error_code)) {
                return true;
            }
            else {
                return PEAR :: raiseError("The expected error you submitted does not exist");                // IMPROVE ME
            }
        }
        else {
            return PEAR :: raiseError("The expected error you submitted is empty");            // IMPROVE ME
        }
    }

    function & raiseError($message = null, $code = null, $mode = null, $options = null, $userinfo = null, $error_class = null, $skipmsg = false) {
        if (is_object($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))) {
                $mode = PEAR_ERROR_RETURN;
            }
        }
        if ($mode === null) {
            if (isset ($this) && isset ($this->_default_error_mode)) {
                $mode = $this->_default_error_mode;
                $options = $this->_default_error_options;

            }
            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 {
            $ec = 'PEAR_Error';
        }
        if ($skipmsg) {
            $a = new $ec($code, $mode, $options, $userinfo);
            return $a;
        }
        else {
            $a = new $ec($message, $code, $mode, $options, $userinfo);
            return $a;
        }
    }

    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 = $mode;
                if (is_callable($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 = $mode;
                if (is_callable($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;
    }

    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;
    }

    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;
    }

    function loadExtension($ext) {
        if (!extension_loaded($ext)) {
            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;
    }

}

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);
                }
            }
        }
        $_PEAR_destructor_object_list = array();
    }

    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]);
        }
    }
}

class PEAR_Error {
    var $error_message_prefix = '';
    var $mode = PEAR_ERROR_RETURN;
    var $level = E_USER_NOTICE;
    var $code = - 1;
    var $message = '';
    var $userinfo = '';
    var $backtrace = null;

    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 (function_exists("debug_backtrace")) {
            if (@ !PEAR :: getStaticProperty('PEAR_Error', 'skiptrace')) {
                $this->backtrace = debug_backtrace();
            }
        }
        if ($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);');
        }
    }

    function getMode() {
        return $this->mode;
    }

    function getCallback() {
        return $this->callback;
    }

    function getMessage() {
        return ($this->error_message_prefix . $this->message);
    }

    function getCode() {
        return $this->code;
    }

    function getType() {
        return get_class($this);
    }

    function getUserInfo() {
        return $this->userinfo;
    }

    function getDebugInfo() {
        return $this->getUserInfo();
    }

    function getBacktrace($frame = null) {
        if (defined('PEAR_IGNORE_BACKTRACE')) {
            return null;
        }
        if ($frame === null) {
            return $this->backtrace;
        }
        return $this->backtrace[$frame];
    }

    function addUserInfo($info) {
        if (empty ($this->userinfo)) {
            $this->userinfo = $info;
        }
        else {
            $this->userinfo .= " ** $info";
        }
    }

    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);
    }
}

?>