mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-15 18:39:52 +00:00
394 lines
11 KiB
PHP
394 lines
11 KiB
PHP
<?php
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/**
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* Parsoid API wrapper.
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*
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* @file
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* @ingroup Extensions
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* @copyright 2011-2013 VisualEditor Team and others; see AUTHORS.txt
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* @license The MIT License (MIT); see LICENSE.txt
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*/
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class ApiVisualEditor extends ApiBase {
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protected function getHTML( $title, $parserParams ) {
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global $wgVisualEditorParsoidURL, $wgVisualEditorParsoidPrefix,
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$wgVisualEditorParsoidTimeout;
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$restoring = false;
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if ( $title->exists() ) {
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if ( $parserParams['oldid'] === 0 ) {
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$parserParams['oldid'] = ''; // Parsoid wants empty string rather than zero
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}
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$revision = Revision::newFromId( $parserParams['oldid'] );
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$latestRevision = Revision::newFromTitle( $title );
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if ( $revision === null || $latestRevision === null ) {
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return false;
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}
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$restoring = !$revision->isCurrent();
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# Disable cache busting as the Parsoid extension keeps templates
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# up to date.
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#$parserParams['touched'] = $title->getTouched();
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#$parserParams['cache'] = 1;
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$req = MWHttpRequest::factory( wfAppendQuery(
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$wgVisualEditorParsoidURL . '/' . $wgVisualEditorParsoidPrefix .
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'/' . urlencode( $title->getPrefixedDBkey() ),
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$parserParams
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),
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array(
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'method' => 'GET',
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'timeout' => $wgVisualEditorParsoidTimeout
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)
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);
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$status = $req->execute();
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if ( $status->isOK() ) {
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$content = $req->getContent();
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} elseif ( $status->isGood() ) {
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$this->dieUsage( $req->getContent(), 'parsoidserver-http-'.$req->getStatus() );
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} elseif ( $errors = $status->getErrorsByType( 'error' ) ) {
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$error = $errors[0];
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$code = $error['message'];
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if ( count( $error['params'] ) ) {
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$message = $error['params'][0];
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} else {
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$message = 'MWHttpRequest error';
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}
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$this->dieUsage( $message, 'parsoidserver-'.$code );
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}
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if ( $content === false ) {
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return false;
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}
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$timestamp = $latestRevision->getTimestamp();
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} else {
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$content = '';
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$timestamp = wfTimestampNow();
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}
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return array(
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'result' => array(
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'content' => $content,
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'basetimestamp' => $timestamp,
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'starttimestamp' => wfTimestampNow(),
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),
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'restoring' => $restoring,
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);
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}
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protected function postHTML( $title, $html, $parserParams ) {
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global $wgVisualEditorParsoidURL, $wgVisualEditorParsoidPrefix,
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$wgVisualEditorParsoidTimeout;
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if ( $parserParams['oldid'] === 0 ) {
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$parserParams['oldid'] = '';
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}
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return Http::post(
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$wgVisualEditorParsoidURL . '/' . $wgVisualEditorParsoidPrefix .
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'/' . urlencode( $title->getPrefixedDBkey() ),
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array(
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'postData' => array(
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'content' => $html,
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'oldid' => $parserParams['oldid']
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),
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'timeout' => $wgVisualEditorParsoidTimeout
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)
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);
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}
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protected function saveWikitext( $title, $wikitext, $params ) {
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$apiParams = array(
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'action' => 'edit',
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'title' => $title->getPrefixedDBkey(),
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'text' => $wikitext,
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'summary' => $params['summary'],
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'basetimestamp' => $params['basetimestamp'],
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'starttimestamp' => $params['starttimestamp'],
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'token' => $params['token'],
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);
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if ( $params['minor'] ) {
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$apiParams['minor'] = true;
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}
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// FIXME add some way that the user's preferences can be respected
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$apiParams['watchlist'] = $params['watch'] ? 'watch' : 'unwatch';
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$api = new ApiMain(
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new DerivativeRequest(
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$this->getRequest(),
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$apiParams,
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true // was posted
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),
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true // enable write
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);
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$api->execute();
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return $api->getResultData();
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}
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protected function parseWikitext( $title ) {
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$apiParams = array(
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'action' => 'parse',
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'page' => $title->getPrefixedDBkey()
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);
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$api = new ApiMain(
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new DerivativeRequest(
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$this->getRequest(),
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$apiParams,
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false // was posted?
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),
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true // enable write?
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);
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$api->execute();
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$result = $api->getResultData();
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$content = isset( $result['parse']['text']['*'] ) ? $result['parse']['text']['*'] : false;
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$revision = Revision::newFromId( $result['parse']['revid'] );
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$timestamp = $revision ? $revision->getTimestamp() : wfTimestampNow();
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if ( $content === false || ( strlen( $content ) && $revision === null ) ) {
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return false;
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}
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return array(
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'content' => $content,
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'basetimestamp' => $timestamp,
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'starttimestamp' => wfTimestampNow()
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);
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}
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protected function parseWikitextFragment( $wikitext, $title = null ) {
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$apiParams = array(
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'action' => 'parse',
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'title' => $title,
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'prop' => 'text',
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'disablepp' => true,
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'text' => $wikitext
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);
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$api = new ApiMain(
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new DerivativeRequest(
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$this->getRequest(),
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$apiParams,
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false // was posted?
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),
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true // enable write?
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);
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$api->execute();
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$result = $api->getResultData();
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return isset( $result['parse']['text']['*'] ) ? $result['parse']['text']['*'] : false;
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}
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protected function diffWikitext( $title, $wikitext ) {
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$apiParams = array(
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'action' => 'query',
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'prop' => 'revisions',
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'titles' => $title->getPrefixedDBkey(),
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'rvdifftotext' => $wikitext
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);
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$api = new ApiMain(
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new DerivativeRequest(
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$this->getRequest(),
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$apiParams,
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false // was posted?
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),
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false // enable write?
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);
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$api->execute();
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$result = $api->getResultData();
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if ( !isset( $result['query']['pages'][$title->getArticleID()]['revisions'][0]['diff']['*'] ) ) {
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return array( 'result' => 'fail' );
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}
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$diffRows = $result['query']['pages'][$title->getArticleID()]['revisions'][0]['diff']['*'];
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if ( $diffRows !== '' ) {
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$context = new DerivativeContext( $this->getContext() );
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$context->setTitle( $title );
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$engine = new DifferenceEngine( $context );
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return array(
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'result' => 'success',
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'diff' => $engine->addHeader(
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$diffRows,
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wfMessage( 'currentrev' )->parse(),
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wfMessage( 'yourtext' )->parse()
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)
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);
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} else {
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return array( 'result' => 'nochanges' );
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}
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}
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public function execute() {
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global $wgVisualEditorNamespaces, $wgVisualEditorUseChangeTagging,
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$wgVisualEditorEditNotices;
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$user = $this->getUser();
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$params = $this->extractRequestParams();
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$page = Title::newFromText( $params['page'] );
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if ( !$page ) {
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$this->dieUsageMsg( 'invalidtitle', $params['page'] );
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}
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if ( !in_array( $page->getNamespace(), $wgVisualEditorNamespaces ) ) {
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$this->dieUsage( "VisualEditor is not enabled in namespace " .
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$page->getNamespace(), 'novenamespace' );
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}
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$parserParams = array();
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if ( isset( $params['oldid'] ) ) {
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$parserParams['oldid'] = $params['oldid'];
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}
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switch ( $params['paction'] ) {
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case 'parse':
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$parsed = $this->getHTML( $page, $parserParams );
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// Dirty hack to provide the correct context for edit notices
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global $wgTitle; // FIXME NOOOOOOOOES
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$wgTitle = $page;
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$notices = $page->getEditNotices();
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if ( $user->isAnon() ) {
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$wgVisualEditorEditNotices[] = 'anoneditwarning';
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}
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if ( $parsed && $parsed['restoring'] ) {
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$wgVisualEditorEditNotices[] = 'editingold';
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}
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if ( count( $wgVisualEditorEditNotices ) ) {
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foreach ( $wgVisualEditorEditNotices as $key ) {
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$notices[] = wfMessage( $key )->parseAsBlock();
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}
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}
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if ( $parsed === false ) {
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$this->dieUsage( 'Error contacting the Parsoid server', 'parsoidserver' );
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} else {
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$result = array_merge(
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array( 'result' => 'success', 'notices' => $notices ), $parsed['result']
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);
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}
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break;
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case 'parsefragment':
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$content = $this->parseWikitextFragment( $params['wikitext'], $page->getText() );
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if ( $content === false ) {
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$this->dieUsage( 'Error contacting the Parsoid server', 'parsoidserver' );
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} else {
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$result = array(
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'result' => 'success',
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'content' => $content
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);
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}
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break;
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case 'serialize':
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if ( $params['html'] === null ) {
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$this->dieUsageMsg( 'missingparam', 'html' );
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}
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$content = $this->postHTML( $page, $params['html'], $parserParams );
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if ( $content === false ) {
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$this->dieUsage( 'Error contacting the Parsoid server', 'parsoidserver' );
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} else {
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$result = array( 'result' => 'success', 'content' => $content );
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}
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break;
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case 'save':
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case 'diff':
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$wikitext = $this->postHTML( $page, $params['html'], $parserParams );
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if ( $wikitext === false ) {
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$this->dieUsage( 'Error contacting the Parsoid server', 'parsoidserver' );
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} elseif ( $params['paction'] === 'save' ) {
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// Save page
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$editResult = $this->saveWikitext( $page, $wikitext, $params );
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if (
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!isset( $editResult['edit']['result'] ) ||
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$editResult['edit']['result'] !== 'Success'
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) {
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$result = array(
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'result' => 'error',
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'edit' => $editResult['edit']
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);
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} else {
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if ( isset( $editResult['edit']['newrevid'] ) && $wgVisualEditorUseChangeTagging ) {
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ChangeTags::addTags( 'visualeditor', null,
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intval( $editResult['edit']['newrevid'] ),
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null
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);
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}
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$result = $this->parseWikitext( $page );
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if ( $result === false ) {
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$this->dieUsage( 'Error contacting the Parsoid server', 'parsoidserver' );
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}
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$result['result'] = 'success';
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if ( isset( $editResult['edit']['newrevid'] ) ) {
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$result['newrevid'] = intval( $editResult['edit']['newrevid'] );
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}
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}
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} elseif ( $params['paction'] === 'diff' ) {
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$diff = $this->diffWikitext( $page, $wikitext );
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if ( $diff['result'] === 'fail' ) {
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$this->dieUsage( 'Diff failed', 'difffailed' );
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}
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$result = $diff;
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}
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break;
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}
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$this->getResult()->addValue( null, $this->getModuleName(), $result );
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}
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public function getAllowedParams() {
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return array(
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'page' => array(
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ApiBase::PARAM_REQUIRED => true,
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),
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'paction' => array(
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ApiBase::PARAM_REQUIRED => true,
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ApiBase::PARAM_TYPE => array( 'parse', 'parsefragment', 'serialize', 'save', 'diff' ),
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),
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'token' => array(
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ApiBase::PARAM_REQUIRED => true,
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),
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'wikitext' => null,
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'basetimestamp' => null,
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'starttimestamp' => null,
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'oldid' => null,
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'minor' => null,
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'watch' => null,
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'html' => null,
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'summary' => null
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);
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}
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public function needsToken() {
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return true;
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}
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public function getTokenSalt() {
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return '';
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}
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public function mustBePosted() {
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return true;
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}
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public function isWriteMode() {
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return true;
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}
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public function getVersion() {
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return __CLASS__ . ': $Id$';
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}
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public function getParamDescription() {
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return array(
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'page' => 'The page to perform actions on.',
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'paction' => 'Action to perform',
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'oldid' => 'The revision number to use. If zero, the empty string is passed to Parsoid'
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.' to indicate new page creation.',
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'minor' => 'Flag for minor edit.',
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'html' => 'HTML to send to parsoid in exchange for wikitext',
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'summary' => 'Edit summary',
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'basetimestamp' => 'When saving, set this to the timestamp of the revision that was'
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.' edited. Used to detect edit conflicts.',
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'starttimestamp' => 'When saving, set this to the timestamp of when the page was loaded.'
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.' Used to detect edit conflicts.',
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'token' => 'Edit token',
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);
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}
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public function getDescription() {
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return 'Returns HTML5 for a page from the parsoid service.';
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}
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}
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