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<?php |
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/** |
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* Copyright 2023 Wikimedia Foundation |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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* @file |
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* @license Apache-2.0 |
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* @license MIT |
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* @license GPL-2.0-or-later |
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* @license LGPL-2.1-or-later |
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*/ |
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namespace Wikimedia\Minify; |
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/** |
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* A class representing an index map, as defined by the source map |
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* specification. This allows several mapped sources to be combined into a |
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* single file. |
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*/ |
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class IndexMap { |
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/** @var string|null */ |
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private $file; |
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/** @var IndexMapOffset */ |
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private $offset; |
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/** @var array */ |
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private $sections; |
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/** |
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* Create an empty index map |
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*/ |
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public function __construct() { |
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$this->offset = new IndexMapOffset( 0, 0 ); |
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$this->sections = []; |
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} |
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/** |
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* Set the name of the output file, to be given as the "file" key. |
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* |
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* @param string $file |
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* @return $this |
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*/ |
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public function outputFile( string $file ) { |
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$this->file = $file; |
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return $this; |
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} |
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/** |
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* Add a section with a source map which was encoded in the "raw" JSON format. |
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* |
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* @param string $mapJson The JSON-encoded source map. |
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* @param IndexMapOffset $generatedSize The size of the generated output |
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* corresponding to $mapJson. This is used to advance the current offset |
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* and will be used to calculate the offset of the next section, if there |
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* is one. |
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* @return $this |
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*/ |
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public function addEncodedMap( string $mapJson, IndexMapOffset $generatedSize ) { |
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$this->sections[] = |
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'{"offset":' . |
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json_encode( [ |
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'line' => $this->offset->line, |
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'column' => $this->offset->column, |
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] ) . |
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',"map":' . |
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$mapJson . |
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'}'; |
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$this->offset->add( $generatedSize ); |
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return $this; |
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} |
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/** |
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* Get the index map, encoded as JSON |
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* |
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* @return string |
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*/ |
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public function getMap(): string { |
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$map = "{\n" . |
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"\"version\": 3,\n"; |
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if ( $this->file !== null ) { |
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$map .= '"file": ' . json_encode( $this->file ) . ",\n"; |
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} |
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$map .= "\"sections\": [\n"; |
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if ( $this->sections ) { |
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$map .= implode( ",\n", $this->sections ) . "\n"; |
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} |
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$map .= "]\n}"; |
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return $map; |
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} |
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} |
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elkarte /
Elkarte
