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IndexMap.php
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IndexMap.php
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<?php
/**
* Copyright 2023 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;
/**
* A class representing an index map, as defined by the source map
* specification. This allows several mapped sources to be combined into a
* single file.
*/
class IndexMap {
/** @var string|null */
private $file;
/** @var IndexMapOffset */
private $offset;
/** @var array */
private $sections;
/**
* Create an empty index map
*/
public function __construct() {
$this->offset = new IndexMapOffset( 0, 0 );
$this->sections = [];
}
/**
* Set the name of the output file, to be given as the "file" key.
*
* @param string $file
* @return $this
*/
public function outputFile( string $file ) {
$this->file = $file;
return $this;
}
/**
* Add a section with a source map which was encoded in the "raw" JSON format.
*
* @param string $mapJson The JSON-encoded source map.
* @param IndexMapOffset $generatedSize The size of the generated output
* corresponding to $mapJson. This is used to advance the current offset
* and will be used to calculate the offset of the next section, if there
* is one.
* @return $this
*/
public function addEncodedMap( string $mapJson, IndexMapOffset $generatedSize ) {
$this->sections[] =
'{"offset":' .
json_encode( [
'line' => $this->offset->line,
'column' => $this->offset->column,
] ) .
',"map":' .
$mapJson .
'}';
$this->offset->add( $generatedSize );
return $this;
}
/**
* Get the index map, encoded as JSON
*
* @return string
*/
public function getMap(): string {
$map = "{\n" .
"\"version\": 3,\n";
if ( $this->file !== null ) {
$map .= '"file": ' . json_encode( $this->file ) . ",\n";
}
$map .= "\"sections\": [\n";
if ( $this->sections ) {
$map .= implode( ",\n", $this->sections ) . "\n";
}
$map .= "]\n}";
return $map;
}
}

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text/x-php
Expires
Aug 19 2026, 18:52 (6 w, 2 d ago)
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local-disk
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6d/3c/d544fad1cb4d196378806449869b
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IndexMap.php (2 KB)

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