3 * MediaWiki error classes
5 * Copyright © 2005 Brion Vibber <brion@pobox.com>
6 * http://www.mediawiki.org/
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 * http://www.gnu.org/copyleft/gpl.html
27 * Since PHP4 doesn't have exceptions, here's some error objects
28 * loosely modeled on the standard PEAR_Error model...
33 * @param $message string
35 function __construct( $message ) {
36 $this->mMessage
= $message;
40 * @return string Plaintext error message to display
42 function getMessage() {
43 return $this->mMessage
;
47 * In following PEAR_Error model this could be formatted differently,
48 * but so far it's not.
52 return $this->getMessage();
56 * Returns true if the given object is a WikiError-descended
57 * error object, false otherwise.
59 * @param $object mixed
62 public static function isError( $object ) {
63 if ( $object instanceof WikiError
) {
65 } elseif ( $object instanceof Status
) {
66 return !$object->isOK();
74 * Localized error message object
77 class WikiErrorMsg
extends WikiError
{
79 * @param $message String: wiki message name
80 * @param ... parameters to pass to wfMsg()
82 function __construct( $message/*, ... */ ) {
83 $args = func_get_args();
85 $this->mMessage
= wfMsgReal( $message, $args, true );
86 $this->mMsgKey
= $message;
87 $this->mMsgArgs
= $args;
90 function getMessageKey() {
91 return $this->mMsgKey
;
94 function getMessageArgs() {
95 return $this->mMsgArgs
;
100 * Error class designed to handle errors involved with
104 class WikiXmlError
extends WikiError
{
106 * @param $parser resource
107 * @param $message string
111 function __construct( $parser, $message = 'XML parsing error', $context = null, $offset = 0 ) {
112 $this->mXmlError
= xml_get_error_code( $parser );
113 $this->mColumn
= xml_get_current_column_number( $parser );
114 $this->mLine
= xml_get_current_line_number( $parser );
115 $this->mByte
= xml_get_current_byte_index( $parser );
116 $this->mContext
= $this->_extractContext( $context, $offset );
117 $this->mMessage
= $message;
118 xml_parser_free( $parser );
119 wfDebug( "WikiXmlError: " . $this->getMessage() . "\n" );
122 /** @return string */
123 function getMessage() {
124 // '$1 at line $2, col $3 (byte $4): $5',
125 return wfMsgHtml( 'xml-error-string',
129 $this->mByte
. $this->mContext
,
130 xml_error_string( $this->mXmlError
) );
133 function _extractContext( $context, $offset ) {
134 if( is_null( $context ) ) {
137 // Hopefully integer overflow will be handled transparently here
138 $inlineOffset = $this->mByte
- $offset;
139 return '; "' . substr( $context, $inlineOffset, 16 ) . '"';