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52 lines
1.4 KiB
52 lines
1.4 KiB
4 years ago
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'use strict';
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var path = require('path'),
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fs = require('fs');
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/**
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* Codec for relative paths with respect to the context of the file being compiled.
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* @type {{name:string, decode: function, encode: function, root: function}}
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*/
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module.exports = {
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name : 'source-relative',
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decode: decode,
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encode: encode,
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root : root
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};
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/**
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* Decode the given uri.
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* Any path with or without leading slash is tested against context directory.
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* Exclude module paths containing `~`.
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* @this {{options: object}} A loader or compilation
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* @param {string} uri A source uri to decode
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* @returns {boolean|string} False where unmatched else the decoded path
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*/
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function decode(uri) {
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/* jshint validthis:true */
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var base = this.context,
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absFile = !!base && path.normalize(path.join(base, uri)),
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isValid = !!absFile && fs.existsSync(absFile) && fs.statSync(absFile).isFile();
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return isValid && absFile;
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}
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/**
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* Encode the given file path.
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* @this {{options: object}} A loader or compilation
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* @param {string} absolute An absolute file path to encode
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* @returns {string} A uri
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*/
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function encode(absolute) {
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/* jshint validthis:true */
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return path.relative(this.context, absolute);
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}
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/**
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* The source-map root where relevant.
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* @this {{options: object}} A loader or compilation
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* @returns {string|undefined} The source-map root applicable to any encoded uri
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*/
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function root() {
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/* jshint validthis:true */
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return this.context;
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}
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