Initial commit

Author: sokra

.gitattributes

@@ -0,0 +1 @@
+* text=auto

.gitignore

@@ -0,0 +1 @@
+/node_modules

README.md

@@ -0,0 +1,30 @@
+# compression plugin for webpack
+
+## Usage
+
+``` javascript
+var CompressionPlugin = require("compression-webpack-plugin");
+module.exports = {
+	plugins: [
+		new CompressionPlugin({
+			asset: "{file}.gz",
+			algorithm: "gzip",
+			regExp: /\.js$|\.html$/,
+			threshold: 10240,
+			minRatio: 0.8
+		})
+	]
+}
+```
+
+Arguments:
+
+* `asset`: The target asset name. `{file}` is replaced with the original asset. Defaults to `"{file}.gz"`.
+* `algorithm`: Can be a `function(buf, callback)` or a string. For a string the algorithm is tacken from `zlib`. Defaults to `"gzip"`.
+* `regExp`: All assets matching this RegExp are processed. Defaults to every asset.
+* `threshold`: Only assets bigger than this size are processed. In bytes. Defaults to `0`.
+* `minRatio`: Only assets that compress better that this ratio are processed. Defaults to `0.8`.
+
+## License
+
+MIT (http://www.opensource.org/licenses/mit-license.php)

index.js

@@ -0,0 +1,59 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+var async = require("async");
+
+var Source = require("webpack/lib/Source");
+
+function RawSource(value) {
+	Source.call(this);
+	this._value = value;
+}
+module.exports = RawSource;
+
+RawSource.prototype = Object.create(Source.prototype);
+RawSource.prototype._bake = function() {
+	return {
+		source: this._value
+	};
+};
+
+function CompressionPlugin(options) {
+	options = options || {};
+	this.asset = options.asset || "{file}.gz";
+	this.algorithm = options.algorithm || "gzip";
+	if(typeof this.algorithm === "string") {
+		var zlib = require("zlib");
+		this.algorithm = zlib[this.algorithm];
+		if(!this.algorithm) throw new Error("Algorithm not found in zlib");
+		this.algorithm = this.algorithm.bind(zlib);
+	}
+	this.regExp = options.regExp;
+	this.threshold = options.threshold || 0;
+	this.minRatio = options.minRatio || 0.8;
+}
+module.exports = CompressionPlugin;
+
+CompressionPlugin.prototype.apply = function(compiler) {
+	compiler.plugin("compilation", function(compilation) {
+		compilation.plugin("optimize-assets", function(assets, callback) {
+			async.forEach(Object.keys(assets), function(file, callback) {
+				if(this.regExp && !this.regExp.test(file)) return callback();
+				var asset = assets[file];
+				var content = asset.source();
+				if(!Buffer.isBuffer(content))
+					content = new Buffer(content, "utf-8");
+				var originalSize = content.length;
+				if(originalSize < this.threshold) return callback();
+				this.algorithm(content, function(err, result) {
+					if(err) return callback(err);
+					if(result.length / originalSize > this.minRatio) return callback();
+					var newFile = this.asset.replace(/\{file\}/g, file);
+					assets[newFile] = new RawSource(result);
+					callback();
+				}.bind(this));
+			}.bind(this), callback);
+		}.bind(this));
+	}.bind(this));
+};

package.json

@@ -0,0 +1,23 @@
+{
+	"name": "compression-webpack-plugin",
+	"version": "0.1.0",
+	"author": "Tobias Koppers @sokra",
+	"description": "Prepare compressed versions of assets to serve them with Content-Encoding",
+	"peerDependencies": {
+		"webpack": ">=0.11 <0.12"
+	},
+	"dependencies": {
+		"async": "0.2.x"
+	},
+	"homepage": "http://github.com/webpack/compression-webpack-plugin",
+	"repository": {
+		"type": "git",
+		"url": "http://github.com/webpack/compression-webpack-plugin.git"
+	},
+	"licenses": [
+		{
+			"type": "MIT",
+			"url": "http://www.opensource.org/licenses/mit-license.php"
+		}
+	]
+}