RestbaseVirtualRESTService::onRequests()   C
last analyzed

Complexity

Conditions 7
Paths 18

Size

Total Lines 34
Code Lines 21

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 7
eloc 21
nc 18
nop 2
dl 0
loc 34
rs 6.7272
c 0
b 0
f 0
1
<?php
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/**
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 * Virtual HTTP service client for RESTBase
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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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/**
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 * Virtual REST service for RESTBase
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 * @since 1.25
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 */
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class RestbaseVirtualRESTService extends VirtualRESTService {
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	/**
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	 * Example RESTBase v1 requests:
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	 *  GET /local/v1/page/html/{title}{/revision}
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	 *  POST /local/v1/transform/html/to/wikitext{/title}{/revision}
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	 *   * body: array( 'html' => ... )
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	 *  POST /local/v1/transform/wikitext/to/html{/title}{/revision}
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	 *   * body: array( 'wikitext' => ... ) or array( 'wikitext' => ..., 'body_only' => true/false )
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	 *
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	 * @param array $params Key/value map
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	 *   - url            : RESTBase server URL
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	 *   - domain         : Wiki domain to use
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	 *   - timeout        : request timeout in seconds (optional)
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	 *   - forwardCookies : cookies to forward to RESTBase/Parsoid (as a Cookie
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	 *                       header string) or false (optional)
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	 *                       Note: forwardCookies will in the future be a boolean
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	 *                       only, signifing request cookies should be forwarded
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	 *                       to the service; the current state is due to the way
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	 *                       VE handles this particular parameter
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	 *   - HTTPProxy      : HTTP proxy to use (optional)
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	 *   - parsoidCompat  : whether to parse URL as if they were meant for Parsoid
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	 *                       boolean (optional)
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	 *   - fixedUrl       : Do not append domain to the url. For example to use
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	 *                       English Wikipedia restbase, you would this to true
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	 *                       and url to https://en.wikipedia.org/api/rest_#version#
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	 */
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	public function __construct( array $params ) {
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		// set up defaults and merge them with the given params
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		$mparams = array_merge( [
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			'name' => 'restbase',
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			'url' => 'http://localhost:7231/',
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			'domain' => 'localhost',
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			'timeout' => 100,
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			'forwardCookies' => false,
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			'HTTPProxy' => null,
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			'parsoidCompat' => false,
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			'fixedUrl' => false,
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		], $params );
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		// Ensure that the url parameter has a trailing slash.
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		$mparams['url'] = preg_replace(
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			'#/?$#',
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			'/',
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			$mparams['url']
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		);
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		// Ensure the correct domain format: strip protocol, port,
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		// and trailing slash if present.  This lets us use
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		// $wgCanonicalServer as a default value, which is very convenient.
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		$mparams['domain'] = preg_replace(
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			'/^(https?:\/\/)?([^\/:]+?)(:\d+)?\/?$/',
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			'$2',
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			$mparams['domain']
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		);
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		parent::__construct( $mparams );
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	}
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	public function onRequests( array $reqs, Closure $idGenFunc ) {
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		if ( $this->params['parsoidCompat'] ) {
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			return $this->onParsoidRequests( $reqs, $idGenFunc );
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		}
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		$result = [];
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		foreach ( $reqs as $key => $req ) {
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			if ( $this->params['fixedUrl'] ) {
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				$version = explode( '/', $req['url'] )[1];
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				$req['url'] =
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					str_replace( '#version#', $version, $this->params['url'] ) .
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					preg_replace( '#^local/v./#', '', $req['url'] );
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			} else {
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				// replace /local/ with the current domain
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				$req['url'] = preg_replace( '#^local/#', $this->params['domain'] . '/', $req['url'] );
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				// and prefix it with the service URL
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				$req['url'] = $this->params['url'] . $req['url'];
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			}
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			// set the appropriate proxy, timeout and headers
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			if ( $this->params['HTTPProxy'] ) {
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				$req['proxy'] = $this->params['HTTPProxy'];
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			}
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			if ( $this->params['timeout'] != null ) {
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				$req['reqTimeout'] = $this->params['timeout'];
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			}
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			if ( $this->params['forwardCookies'] ) {
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				$req['headers']['Cookie'] = $this->params['forwardCookies'];
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			}
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			$result[$key] = $req;
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		}
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		return $result;
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	}
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	/**
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	 * Remaps Parsoid v1/v3 requests to RESTBase v1 requests.
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	 */
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	public function onParsoidRequests( array $reqs, Closure $idGeneratorFunc ) {
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		$result = [];
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		foreach ( $reqs as $key => $req ) {
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			$version = explode( '/', $req['url'] )[1];
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			if ( $version === 'v3' ) {
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				$result[$key] = $this->onParsoid3Request( $req, $idGeneratorFunc );
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			} elseif ( $version === 'v1' ) {
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				$result[$key] = $this->onParsoid1Request( $req, $idGeneratorFunc );
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			} else {
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				throw new Exception( "Only v1 and v3 are supported." );
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			}
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		}
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		return $result;
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	}
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	/**
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	 * Remap a Parsoid v1 request to a RESTBase v1 request.
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	 *
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	 * Example Parsoid v1 requests:
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	 *  GET /local/v1/page/$title/html/$oldid
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	 *   * $oldid is optional
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	 *  POST /local/v1/transform/html/to/wikitext/$title/$oldid
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	 *   * body: array( 'html' => ... )
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	 *   * $title and $oldid are optional
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	 *  POST /local/v1/transform/wikitext/to/html/$title
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	 *   * body: array( 'wikitext' => ... ) or array( 'wikitext' => ..., 'body' => true/false )
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	 *   * $title is optional
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	 *
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	 * NOTE: the POST APIs aren't "real" Parsoid v1 APIs, they are just what
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	 * Visual Editor "pretends" the V1 API is like.  (See
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	 * ParsoidVirtualRESTService.)
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	 */
151 View Code Duplication
	public function onParsoid1Request( array $req, Closure $idGeneratorFunc ) {
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		$parts = explode( '/', $req['url'] );
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		list(
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			$targetWiki, // 'local'
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			$version, // 'v1'
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			$reqType // 'page' or 'transform'
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		) = $parts;
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		if ( $targetWiki !== 'local' ) {
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			throw new Exception( "Only 'local' target wiki is currently supported" );
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		} elseif ( $version !== 'v1' ) {
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			throw new Exception( "Version mismatch: should not happen." );
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		} elseif ( $reqType !== 'page' && $reqType !== 'transform' ) {
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			throw new Exception( "Request type must be either 'page' or 'transform'" );
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		}
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		$req['url'] = $this->params['url'] . $this->params['domain'] . '/v1/' . $reqType . '/';
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		if ( $reqType === 'page' ) {
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			$title = $parts[3];
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			if ( $parts[4] !== 'html' ) {
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				throw new Exception( "Only 'html' output format is currently supported" );
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			}
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			$req['url'] .= 'html/' . $title;
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			if ( isset( $parts[5] ) ) {
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				$req['url'] .= '/' . $parts[5];
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			} elseif ( isset( $req['query']['oldid'] ) && $req['query']['oldid'] ) {
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				$req['url'] .= '/' . $req['query']['oldid'];
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				unset( $req['query']['oldid'] );
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			}
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		} elseif ( $reqType === 'transform' ) {
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			// from / to transform
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			$req['url'] .= $parts[3] . '/to/' . $parts[5];
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			// the title
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			if ( isset( $parts[6] ) ) {
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				$req['url'] .= '/' . $parts[6];
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			}
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			// revision id
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			if ( isset( $parts[7] ) ) {
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				$req['url'] .= '/' . $parts[7];
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			} elseif ( isset( $req['body']['oldid'] ) && $req['body']['oldid'] ) {
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				$req['url'] .= '/' . $req['body']['oldid'];
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				unset( $req['body']['oldid'] );
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			}
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			if ( $parts[4] !== 'to' ) {
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				throw new Exception( "Part index 4 is not 'to'" );
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			}
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			if ( $parts[3] === 'html' && $parts[5] === 'wikitext' ) {
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				if ( !isset( $req['body']['html'] ) ) {
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					throw new Exception( "You must set an 'html' body key for this request" );
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				}
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			} elseif ( $parts[3] == 'wikitext' && $parts[5] == 'html' ) {
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				if ( !isset( $req['body']['wikitext'] ) ) {
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					throw new Exception( "You must set a 'wikitext' body key for this request" );
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				}
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				if ( isset( $req['body']['body'] ) ) {
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					$req['body']['body_only'] = $req['body']['body'];
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					unset( $req['body']['body'] );
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				}
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			} else {
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				throw new Exception( "Transformation unsupported" );
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			}
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		}
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		// set the appropriate proxy, timeout and headers
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		if ( $this->params['HTTPProxy'] ) {
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			$req['proxy'] = $this->params['HTTPProxy'];
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		}
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		if ( $this->params['timeout'] != null ) {
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			$req['reqTimeout'] = $this->params['timeout'];
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		}
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		if ( $this->params['forwardCookies'] ) {
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			$req['headers']['Cookie'] = $this->params['forwardCookies'];
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		}
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		return $req;
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	}
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	/**
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	 * Remap a Parsoid v3 request to a RESTBase v1 request.
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	 *
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	 * Example Parsoid v3 requests:
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	 *  GET /local/v3/page/html/$title/{$revision}
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	 *   * $revision is optional
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	 *  POST /local/v3/transform/html/to/wikitext/{$title}{/$revision}
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	 *   * body: array( 'html' => ... )
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	 *   * $title and $revision are optional
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	 *  POST /local/v3/transform/wikitext/to/html/{$title}{/$revision}
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	 *   * body: array( 'wikitext' => ... ) or array( 'wikitext' => ..., 'body_only' => true/false )
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	 *   * $title is optional
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	 *   * $revision is optional
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	 */
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	public function onParsoid3Request( array $req, Closure $idGeneratorFunc ) {
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		$parts = explode( '/', $req['url'] );
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		list(
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			$targetWiki, // 'local'
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			$version, // 'v3'
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			$action, // 'transform' or 'page'
0 ignored issues
show
Unused Code introduced by
The assignment to $action is unused. Consider omitting it like so list($first,,$third).

This checks looks for assignemnts to variables using the list(...) function, where not all assigned variables are subsequently used.

Consider the following code example.

<?php

function returnThreeValues() {
    return array('a', 'b', 'c');
}

list($a, $b, $c) = returnThreeValues();

print $a . " - " . $c;

Only the variables $a and $c are used. There was no need to assign $b.

Instead, the list call could have been.

list($a,, $c) = returnThreeValues();
Loading history...
245
			$format, // 'html' or 'wikitext'
0 ignored issues
show
Unused Code introduced by
The assignment to $format is unused. Consider omitting it like so list($first,,$third).

This checks looks for assignemnts to variables using the list(...) function, where not all assigned variables are subsequently used.

Consider the following code example.

<?php

function returnThreeValues() {
    return array('a', 'b', 'c');
}

list($a, $b, $c) = returnThreeValues();

print $a . " - " . $c;

Only the variables $a and $c are used. There was no need to assign $b.

Instead, the list call could have been.

list($a,, $c) = returnThreeValues();
Loading history...
246
			// $title, // optional
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			// $revision, // optional
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		) = $parts;
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		if ( $targetWiki !== 'local' ) {
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			throw new Exception( "Only 'local' target wiki is currently supported" );
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		} elseif ( $version !== 'v3' ) {
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			throw new Exception( "Version mismatch: should not happen." );
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		}
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		// replace /local/ with the current domain, change v3 to v1,
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		$req['url'] = preg_replace( '#^local/v3/#', $this->params['domain'] . '/v1/', $req['url'] );
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		// and prefix it with the service URL
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		$req['url'] = $this->params['url'] . $req['url'];
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		// set the appropriate proxy, timeout and headers
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		if ( $this->params['HTTPProxy'] ) {
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			$req['proxy'] = $this->params['HTTPProxy'];
261
		}
262
		if ( $this->params['timeout'] != null ) {
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			$req['reqTimeout'] = $this->params['timeout'];
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		}
265
		if ( $this->params['forwardCookies'] ) {
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			$req['headers']['Cookie'] = $this->params['forwardCookies'];
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		}
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		return $req;
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	}
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}
273