mirror of https://github.com/webpack/webpack.git
83 lines
3.2 KiB
JavaScript
83 lines
3.2 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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var RequestShortener = require("./RequestShortener");
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var Template = require("./Template");
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var ConcatSource = require("webpack-core/lib/ConcatSource");
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var RawSource = require("webpack-core/lib/RawSource");
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function SourceMapDevToolPlugin(sourceMapFilename, sourceMappingURLComment) {
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this.sourceMapFilename = sourceMapFilename;
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this.sourceMappingURLComment = sourceMappingURLComment || "\n/*\n//@ sourceMappingURL=[url]\n*/";
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}
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module.exports = SourceMapDevToolPlugin;
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SourceMapDevToolPlugin.prototype.apply = function(compiler) {
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var sourceMapFilename = this.sourceMapFilename;
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var sourceMappingURLComment = this.sourceMappingURLComment;
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var requestShortener = new RequestShortener(compiler.context);
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compiler.plugin("compilation", function(compilation) {
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compilation.plugin("build-module", function(module) {
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module.useSourceMap = true;
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});
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compilation.plugin("after-optimize-chunk-assets", function(chunks) {
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chunks.forEach(function(chunk) {
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chunk.files.slice().forEach(function(file) {
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var asset = this.assets[file];
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if(asset.__SourceMapDevTool_Data) {
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var data = asset.__SourceMapDevTool_Data;
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for(var file in data) {
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this.assets[file] = data[file];
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}
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return;
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}
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var sourceMap = asset.map();
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if(sourceMap) {
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for(var i = 0; i < sourceMap.sources.length; i++) {
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var source = sourceMap.sources[i];
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var str;
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var module = compilation.findModule(source);
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if(module)
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str = module.readableIdentifier(requestShortener);
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else
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str = requestShortener.shorten(source);
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str = str.split("!");
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str = str.pop() + (str.length > 0 ? " " + str.join("!") : "");
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var idx;
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while((idx = sourceMap.sources.indexOf(str) >= 0) && (idx < i)) {
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str += "*";
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}
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sourceMap.sources[i] = str;
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}
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sourceMap.sourceRoot = "webpack-module://";
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asset.__SourceMapDevTool_Data = {};
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if(sourceMapFilename) {
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var filename = file, query = "";
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var idx = filename.indexOf("?");
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if(idx >= 0) {
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query = filename.substr(idx);
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filename = filename.substr(0, idx);
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}
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var sourceMapFile = sourceMapFilename
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.replace(Template.REGEXP_FILE, filename)
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.replace(Template.REGEXP_QUERY, query)
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.replace(Template.REGEXP_FILEBASE, basename(filename))
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.replace(Template.REGEXP_HASH, this.hash)
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.replace(Template.REGEXP_ID, chunk.id);
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asset.__SourceMapDevTool_Data[file] = this.assets[file] = new ConcatSource(asset, sourceMappingURLComment.replace(/\[url\]/g, sourceMapFile));
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asset.__SourceMapDevTool_Data[sourceMapFile] = this.assets[sourceMapFile] = new RawSource(JSON.stringify(sourceMap));
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chunk.files.push(sourceMapFile);
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} else {
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asset.__SourceMapDevTool_Data[file] = this.assets[file] = new ConcatSource(asset, sourceMappingURLComment.replace(/\[url\]/g, "data:application/json;base64," + new Buffer(JSON.stringify(sourceMap)).toString("base64")));
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}
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}
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}, this);
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}, this);
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});
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});
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};
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function basename(name) {
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if(name.indexOf("/") < 0) return name;
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return name.substr(name.lastIndexOf("/")+1);
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} |