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97 lines
2.7 KiB
JavaScript
97 lines
2.7 KiB
JavaScript
6 years ago
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var path = require('path');
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var rewriteUrls = require('../urls/rewrite');
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var REMOTE_RESOURCE = /^(https?:)?\/\//;
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function SourceReader(context, data) {
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this.outerContext = context;
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this.data = data;
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this.sources = {};
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}
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SourceReader.prototype.sourceAt = function (path) {
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return this.sources[path];
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};
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SourceReader.prototype.trackSource = function (path, source) {
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this.sources[path] = {};
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this.sources[path][path] = source;
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};
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SourceReader.prototype.toString = function () {
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if (typeof this.data == 'string')
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return fromString(this);
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if (Buffer.isBuffer(this.data))
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return fromBuffer(this);
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if (Array.isArray(this.data))
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return fromArray(this);
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return fromHash(this);
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};
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function fromString(self) {
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var data = self.data;
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self.trackSource(undefined, data);
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return data;
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}
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function fromBuffer(self) {
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var data = self.data.toString();
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self.trackSource(undefined, data);
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return data;
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}
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function fromArray(self) {
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return self.data
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.map(function (source) {
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return self.outerContext.options.processImport === false ?
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source + '@shallow' :
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source;
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})
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.map(function (source) {
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return !self.outerContext.options.relativeTo || /^https?:\/\//.test(source) ?
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source :
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path.relative(self.outerContext.options.relativeTo, source);
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})
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.map(function (source) { return '@import url(' + source + ');'; })
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.join('');
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}
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function fromHash(self) {
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var data = [];
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var toBase = path.resolve(self.outerContext.options.target || self.outerContext.options.root);
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for (var source in self.data) {
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var styles = self.data[source].styles;
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var inputSourceMap = self.data[source].sourceMap;
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var isRemote = REMOTE_RESOURCE.test(source);
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var absoluteSource = isRemote ? source : path.resolve(source);
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var absoluteSourcePath = path.dirname(absoluteSource);
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var rewriteOptions = {
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absolute: self.outerContext.options.explicitRoot,
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relative: !self.outerContext.options.explicitRoot,
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imports: true,
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rebase: self.outerContext.options.rebase,
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fromBase: absoluteSourcePath,
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toBase: isRemote ? absoluteSourcePath : toBase,
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urlQuotes: self.outerContext.options.compatibility.properties.urlQuotes
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};
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styles = rewriteUrls(styles, rewriteOptions, self.outerContext);
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self.trackSource(source, styles);
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styles = self.outerContext.sourceTracker.store(source, styles);
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// here we assume source map lies in the same directory as `source` does
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if (self.outerContext.options.sourceMap && inputSourceMap)
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self.outerContext.inputSourceMapTracker.trackLoaded(source, source, inputSourceMap);
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data.push(styles);
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}
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return data.join('');
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}
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module.exports = SourceReader;
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