422 lines
12 KiB
PHP
422 lines
12 KiB
PHP
<?php
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/**
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* This file contains the ApiErrorFormatter definition, plus implementations of
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* specific formatters.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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namespace MediaWiki\Api;
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use ILocalizedException;
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use MediaWiki\Language\Language;
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use MediaWiki\Language\RawMessage;
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use MediaWiki\Message\Message;
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use MediaWiki\Page\PageReference;
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use MediaWiki\Page\PageReferenceValue;
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use MediaWiki\Parser\Sanitizer;
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use StatusValue;
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use Throwable;
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use Wikimedia\Message\MessageSpecifier;
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/**
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* Formats errors and warnings for the API, and add them to the associated
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* ApiResult.
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* @since 1.25
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* @ingroup API
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* @phan-file-suppress PhanUndeclaredMethod Undeclared methods in IApiMessage
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*/
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class ApiErrorFormatter {
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/** @var PageReference Dummy title to silence warnings from MessageCache::parse() */
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private static $dummyTitle = null;
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/** @var ApiResult */
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protected $result;
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/** @var Language */
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protected $lang;
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/** @var PageReference|null page used for rendering error messages, or null to use the dummy title */
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private $title = null;
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/** @var bool */
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protected $useDB = false;
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/** @var string */
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protected $format = 'none';
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/**
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* @param ApiResult $result Into which data will be added
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* @param Language $lang Used for i18n
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* @param string $format
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* - plaintext: Error message as something vaguely like plaintext
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* (it's basically wikitext with HTML tags stripped and entities decoded)
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* - wikitext: Error message as wikitext
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* - html: Error message as HTML
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* - raw: Raw message key and parameters, no human-readable text
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* - none: Code and data only, no human-readable text
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* @param bool $useDB Whether to use local translations for errors and warnings.
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*/
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public function __construct( ApiResult $result, Language $lang, $format, $useDB = false ) {
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$this->result = $result;
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$this->lang = $lang;
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$this->useDB = $useDB;
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$this->format = $format;
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}
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/**
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* Test whether a code is a valid API error code
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*
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* A valid code contains only ASCII letters, numbers, underscore, and
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* hyphen and is not the empty string.
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*
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* For backwards compatibility, any code beginning 'internal_api_error_' is
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* also allowed.
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*
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* @param string $code
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* @return bool
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*/
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public static function isValidApiCode( $code ) {
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return is_string( $code ) && (
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preg_match( '/^[a-zA-Z0-9_-]+$/', $code ) ||
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// TODO: Deprecate this
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preg_match( '/^internal_api_error_[^\0\r\n]+$/', $code )
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);
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}
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/**
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* Return a formatter like this one but with a different format
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*
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* @since 1.32
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* @param string $format New format.
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* @return ApiErrorFormatter
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*/
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public function newWithFormat( $format ) {
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return new self( $this->result, $this->lang, $format, $this->useDB );
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}
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/**
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* Fetch the format for this formatter
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* @since 1.32
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* @return string
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*/
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public function getFormat() {
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return $this->format;
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}
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/**
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* Fetch the Language for this formatter
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* @since 1.29
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* @return Language
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*/
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public function getLanguage() {
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return $this->lang;
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}
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/**
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* Fetch a dummy title to set on Messages
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* @return PageReference
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*/
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protected function getDummyTitle(): PageReference {
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if ( self::$dummyTitle === null ) {
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self::$dummyTitle = PageReferenceValue::localReference(
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NS_SPECIAL,
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'Badtitle/' . __METHOD__
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);
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}
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return self::$dummyTitle;
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}
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/**
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* Get the page used for rendering error messages, e.g. for wikitext magic words like {{PAGENAME}}
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* @since 1.37
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* @return PageReference
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*/
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public function getContextTitle(): PageReference {
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return $this->title ?: $this->getDummyTitle();
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}
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/**
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* Set the page used for rendering error messages, e.g. for wikitext magic words like {{PAGENAME}}
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* @since 1.37
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* @param PageReference $title
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*/
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public function setContextTitle( PageReference $title ) {
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$this->title = $title;
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}
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/**
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* Add a warning to the result
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* @param string|null $modulePath
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* @param MessageSpecifier|array|string $msg Warning message. See ApiMessage::create().
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* @param string|null $code See ApiMessage::create().
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* @param array|null $data See ApiMessage::create().
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*/
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public function addWarning( $modulePath, $msg, $code = null, $data = null ) {
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$msg = ApiMessage::create( $msg, $code, $data )
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->inLanguage( $this->lang )
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->page( $this->getContextTitle() )
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->useDatabase( $this->useDB );
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$this->addWarningOrError( 'warning', $modulePath, $msg );
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}
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/**
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* Add an error to the result
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* @param string|null $modulePath
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* @param MessageSpecifier|array|string $msg Warning message. See ApiMessage::create().
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* @param string|null $code See ApiMessage::create().
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* @param array|null $data See ApiMessage::create().
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*/
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public function addError( $modulePath, $msg, $code = null, $data = null ) {
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$msg = ApiMessage::create( $msg, $code, $data )
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->inLanguage( $this->lang )
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->page( $this->getContextTitle() )
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->useDatabase( $this->useDB );
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$this->addWarningOrError( 'error', $modulePath, $msg );
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}
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/**
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* Add warnings and errors from a StatusValue object to the result
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* @param string|null $modulePath
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* @param StatusValue $status
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* @param string[]|string $types 'warning' and/or 'error'
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* @param string[] $filter Messages to filter out (since 1.33)
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*/
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public function addMessagesFromStatus(
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$modulePath, StatusValue $status, $types = [ 'warning', 'error' ], array $filter = []
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) {
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if ( $status->isGood() ) {
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return;
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}
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$types = array_unique( (array)$types );
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foreach ( $types as $type ) {
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foreach ( $status->getMessages( $type ) as $msg ) {
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$msg = ApiMessage::create( $msg )
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->inLanguage( $this->lang )
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->page( $this->getContextTitle() )
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->useDatabase( $this->useDB );
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if ( !in_array( $msg->getKey(), $filter, true ) ) {
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$this->addWarningOrError( $type, $modulePath, $msg );
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}
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}
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}
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}
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/**
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* Get an ApiMessage from a throwable
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* @since 1.29
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* @param Throwable $exception
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* @param array $options
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* - wrap: (string|array|MessageSpecifier) Used to wrap the throwable's
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* message if it's not an ILocalizedException. The throwable's message
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* will be added as the final parameter.
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* - code: (string) Default code
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* - data: (array) Default extra data
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* @return IApiMessage
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*/
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public function getMessageFromException( Throwable $exception, array $options = [] ) {
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$options += [ 'code' => null, 'data' => [] ];
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if ( $exception instanceof ILocalizedException ) {
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$msg = $exception->getMessageObject();
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$params = [];
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} elseif ( $exception instanceof MessageSpecifier ) {
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$msg = Message::newFromSpecifier( $exception );
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$params = [];
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} else {
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if ( isset( $options['wrap'] ) ) {
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$msg = $options['wrap'];
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} else {
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$msg = new RawMessage( '$1' );
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if ( !isset( $options['code'] ) ) {
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$class = preg_replace( '#^Wikimedia\\\\Rdbms\\\\#', '', get_class( $exception ) );
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$options['code'] = 'internal_api_error_' . $class;
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$options['data']['errorclass'] = get_class( $exception );
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}
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}
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$params = [ wfEscapeWikiText( $exception->getMessage() ) ];
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}
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return ApiMessage::create( $msg, $options['code'], $options['data'] )
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->params( $params )
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->inLanguage( $this->lang )
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->page( $this->getContextTitle() )
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->useDatabase( $this->useDB );
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}
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/**
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* Format a throwable as an array
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* @since 1.29
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* @param Throwable $exception
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* @param array $options See self::getMessageFromException(), plus
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* - format: (string) Format override
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* @return array
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*/
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public function formatException( Throwable $exception, array $options = [] ) {
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return $this->formatMessage(
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// @phan-suppress-next-line PhanTypeMismatchArgument
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$this->getMessageFromException( $exception, $options ),
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$options['format'] ?? null
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);
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}
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/**
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* Format a message as an array
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* @param Message|array|string $msg Message. See ApiMessage::create().
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* @param string|null $format
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* @return array
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*/
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public function formatMessage( $msg, $format = null ) {
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$msg = ApiMessage::create( $msg )
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->inLanguage( $this->lang )
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->page( $this->getContextTitle() )
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->useDatabase( $this->useDB );
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return $this->formatMessageInternal( $msg, $format ?: $this->format );
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}
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/**
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* Format messages from a StatusValue as an array
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* @param StatusValue $status
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* @param string $type 'warning' or 'error'
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* @param string|null $format
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* @return array
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*/
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public function arrayFromStatus( StatusValue $status, $type = 'error', $format = null ) {
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if ( $status->isGood() || !$status->getMessages() ) {
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return [];
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}
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$result = new ApiResult( 1_000_000 );
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$formatter = new ApiErrorFormatter(
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$result, $this->lang, $format ?: $this->format, $this->useDB
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);
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$formatter->addMessagesFromStatus( null, $status, [ $type ] );
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switch ( $type ) {
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case 'error':
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return (array)$result->getResultData( [ 'errors' ] );
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case 'warning':
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return (array)$result->getResultData( [ 'warnings' ] );
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}
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}
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/**
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* Turn wikitext into something resembling plaintext
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* @since 1.29
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* @param string $text
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* @return string
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*/
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public static function stripMarkup( $text ) {
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// Turn semantic quoting tags to quotes
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$ret = preg_replace( '!</?(var|kbd|samp|code)>!', '"', $text );
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// Strip tags and decode.
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return Sanitizer::stripAllTags( $ret );
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}
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/**
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* Format a Message object for raw format
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* @param MessageSpecifier $msg
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* @return array
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*/
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private function formatRawMessage( MessageSpecifier $msg ) {
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$ret = [
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'key' => $msg->getKey(),
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'params' => $msg->getParams(),
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];
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ApiResult::setIndexedTagName( $ret['params'], 'param' );
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// Transform Messages as parameters in the style of Message::fooParam().
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foreach ( $ret['params'] as $i => $param ) {
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if ( $param instanceof MessageSpecifier ) {
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$ret['params'][$i] = [ 'message' => $this->formatRawMessage( $param ) ];
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}
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}
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return $ret;
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}
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/**
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* Format a message as an array
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* @since 1.29
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* @param ApiMessage|ApiRawMessage $msg
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* @param string|null $format
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* @return array
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*/
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protected function formatMessageInternal( $msg, $format ) {
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$value = [ 'code' => $msg->getApiCode() ];
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switch ( $format ) {
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case 'plaintext':
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$value += [
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'text' => self::stripMarkup( $msg->text() ),
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ApiResult::META_CONTENT => 'text',
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];
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break;
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case 'wikitext':
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$value += [
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'text' => $msg->text(),
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ApiResult::META_CONTENT => 'text',
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];
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break;
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case 'html':
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$value += [
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'html' => $msg->parse(),
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ApiResult::META_CONTENT => 'html',
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];
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break;
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case 'raw':
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$value += $this->formatRawMessage( $msg );
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break;
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case 'none':
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break;
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}
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$data = $msg->getApiData();
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if ( $data ) {
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$value['data'] = $msg->getApiData() + [
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ApiResult::META_TYPE => 'assoc',
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];
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}
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return $value;
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}
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/**
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* Actually add the warning or error to the result
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* @param string $tag 'warning' or 'error'
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* @param string|null $modulePath
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* @param ApiMessage|ApiRawMessage $msg
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*/
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protected function addWarningOrError( $tag, $modulePath, $msg ) {
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$value = $this->formatMessageInternal( $msg, $this->format );
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if ( $modulePath !== null ) {
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$value += [ 'module' => $modulePath ];
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}
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$path = [ $tag . 's' ];
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$existing = $this->result->getResultData( $path );
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if ( $existing === null || !in_array( $value, $existing ) ) {
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$flags = ApiResult::NO_SIZE_CHECK;
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if ( $existing === null ) {
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$flags |= ApiResult::ADD_ON_TOP;
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}
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$this->result->addValue( $path, null, $value, $flags );
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$this->result->addIndexedTagName( $path, $tag );
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}
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}
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}
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/** @deprecated class alias since 1.43 */
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class_alias( ApiErrorFormatter::class, 'ApiErrorFormatter' );
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