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MapperState.php
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MapperState.php
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<?php
/**
* Copyright 2022 Wikimedia Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @file
* @license Apache-2.0
* @license MIT
* @license GPL-2.0-or-later
* @license LGPL-2.1-or-later
*/
namespace Wikimedia\Minify;
/**
* The base class for stateful minifying with source map fetching
*/
abstract class MapperState extends MinifierState {
/** @var MappingsGenerator|null */
protected $mappingsGenerator;
public function __construct() {
$this->mappingsGenerator = new MappingsGenerator;
}
/**
* Minify a source file and collect the output and mappings data.
*
* @param string $url The name of the input file. Possibly a URL relative
* to the source root.
* @param string $source The input source text.
* @param bool $bundle Whether to add the source text to sourcesContent
* @return $this
*/
public function addSourceFile( string $url, string $source, bool $bundle = false ) {
$this->sources[] = $url;
if ( $bundle ) {
$this->sourcesContent[] = $source;
} else {
$this->sourcesContent[] = null;
}
$this->mappingsGenerator->nextSourceFile( $source );
return parent::addSourceFile( $url, $source, $bundle );
}
/**
* Add a string to the output without any minification or source mapping.
*
* @param string $output
* @return $this
*/
public function addOutput( string $output ) {
$this->mappingsGenerator->outputSpace( $output );
return parent::addOutput( $output );
}
/**
* Get the source map data to be JSON encoded.
*
* @return array
*/
public function getSourceMapData() {
$data = [ 'version' => 3 ];
if ( $this->outputFile !== null ) {
$data['file'] = $this->outputFile;
}
if ( $this->sourceRoot !== null ) {
$data['sourceRoot'] = $this->sourceRoot;
}
$data['sources'] = $this->sources;
$needSourcesContent = false;
foreach ( $this->sourcesContent as $content ) {
if ( $content !== null ) {
$needSourcesContent = true;
}
}
if ( $needSourcesContent ) {
$data['sourcesContent'] = $this->sourcesContent;
}
$data['names'] = [];
$data['mappings'] = $this->mappingsGenerator->getMap();
return $data;
}
/**
* Get the JSON-encoded source map. Take care to avoid leaking private data
* due to an XSSI attack.
*
* @return string
*/
public function getRawSourceMap() {
$data = $this->getSourceMapData();
$out = "{\n";
$first = true;
foreach ( $data as $key => $value ) {
if ( $first ) {
$first = false;
} else {
$out .= ",\n";
}
$out .= json_encode( $key ) . ': ' .
json_encode( $value, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES );
}
$out .= "\n}\n";
return $out;
}
/**
* Get the JSON-encoded source map including XSSI protection prefix.
*
* @return string
*/
public function getSourceMap() {
return ")]}\n" . $this->getRawSourceMap();
}
}

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Tue, Aug 18, 20:10 (2 w, 3 d ago)
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MapperState.php (3 KB)

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