mirror of https://github.com/webpack/webpack.git
520 lines
13 KiB
JavaScript
520 lines
13 KiB
JavaScript
var path = require("path");
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var fs = require("fs");
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fs.existsSync = fs.existsSync || path.existsSync;
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var resolve = require("enhanced-resolve");
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var interpret = require("interpret");
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module.exports = function(optimist, argv, convertOptions) {
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var options = {};
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// Help
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if(argv.help) {
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optimist.showHelp();
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process.exit(-1);
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}
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// Shortcuts
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if(argv.d) {
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argv.debug = true;
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argv["output-pathinfo"] = true;
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if(!argv.devtool) {
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argv.devtool = "sourcemap";
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}
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}
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if(argv.p) {
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argv["optimize-minimize"] = true;
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argv["optimize-occurence-order"] = true;
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}
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var configPath, ext;
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var extensions = Object.keys(interpret.extensions).sort(function(a, b){
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return a.length - b.length;
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});
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if (argv.config) {
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configPath = path.resolve(argv.config);
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for (var i = extensions.length - 1; i >= 0; i--) {
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var tmpExt = extensions[i];
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if (configPath.indexOf(tmpExt, configPath.length - tmpExt.length) > -1){
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ext = tmpExt;
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break;
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}
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};
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if (!ext) {
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ext = path.extname(configPath);
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}
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} else {
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for(var i = 0; i < extensions.length; i++) {
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var webpackConfig = path.resolve('webpack.config' + extensions[i]);
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if(fs.existsSync(webpackConfig)) {
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ext = extensions[i];
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configPath = webpackConfig;
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break;
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}
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}
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}
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if(configPath) {
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var moduleName = interpret.extensions[ext];
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if (moduleName) {
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var compiler = require(moduleName);
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var register = interpret.register[moduleName];
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var config = interpret.configurations[moduleName];
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if (register) {
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register(compiler, config);
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}
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}
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options = require(configPath);
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}
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if(typeof options !== "object" || options === null) {
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console.log("Config did not export an object.");
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process.exit(-1);
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}
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if(Array.isArray(options)) {
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options.forEach(processOptions);
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} else {
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processOptions(options);
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}
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if(argv.context) {
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options.context = path.resolve(argv.context);
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}
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if(!options.context) {
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options.context = process.cwd();
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}
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if(argv["watch"]) {
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// TODO remove this in next major version
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if(options.watch && typeof options.watch === "object") {
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console.warn("options.watch is deprecated: Use 'options.watchOptions' instead");
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options.watchOptions = options.watch;
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}
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// TODO remove this in next major version
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if(options.watchDelay) {
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console.warn("options.watchDelay is deprecated: Use 'options.watchOptions.aggregateTimeout' instead");
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options.watchOptions = options.watchOptions || {};
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options.watchOptions.aggregateTimeout = options.watchDelay;
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}
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options.watch = true;
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}
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if(argv["watch-delay"]) {
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console.warn("--watch-delay is deprecated: Use '--watch-aggregate-timeout' instead");
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options.watchOptions = options.watchOptions || {};
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options.watchOptions.aggregateTimeout = +argv["watch-delay"];
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}
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if(argv["watch-aggregate-timeout"]) {
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options.watchOptions = options.watchOptions || {};
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options.watchOptions.aggregateTimeout = +argv["watch-aggregate-timeout"];
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}
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if(argv["watch-poll"]) {
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options.watchOptions = options.watchOptions || {};
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if(typeof argv["watch-poll"] !== "boolean")
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options.watchOptions.poll = +argv["watch-poll"];
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else
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options.watchOptions.poll = true;
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}
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function processOptions(options) {
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function ifArg(name, fn, init, finalize) {
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if(Array.isArray(argv[name])) {
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if(init) {
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init();
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}
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argv[name].forEach(fn);
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if(finalize) {
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finalize();
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}
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} else if(typeof argv[name] !== "undefined") {
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if(init) {
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init();
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}
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fn(argv[name], -1);
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if(finalize) {
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finalize();
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}
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}
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}
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function ifArgPair(name, fn, init, finalize) {
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ifArg(name, function(content, idx) {
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var i = content.indexOf("=");
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if(i < 0) {
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return fn(null, content, idx);
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} else {
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return fn(content.substr(0, i), content.substr(i + 1), idx);
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}
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}, init, finalize);
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}
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function ifBooleanArg(name, fn) {
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ifArg(name, function(bool) {
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if(bool) {
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fn();
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}
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});
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}
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function mapArgToBoolean(name, optionName) {
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ifBooleanArg(name, function() {
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options[optionName || name] = true;
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});
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}
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function mapArgToBooleanInverse(name, optionName) {
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ifArg(name, function(bool) {
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if(!bool) {
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options[optionName || name] = false;
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}
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});
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}
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function mapArgToPath(name, optionName) {
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ifArg(name, function(str) {
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options[optionName || name] = path.resolve(str);
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});
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}
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function loadPlugin(name) {
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var path;
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try {
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path = resolve.sync(process.cwd(), name);
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} catch(e) {
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console.log("Cannot resolve plugin " + name + ".");
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process.exit(-1);
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}
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var Plugin;
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try {
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Plugin = require(path);
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} catch(e) {
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console.log("Cannot load plugin " + name + ". (" + path + ")");
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throw e;
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}
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try {
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return new Plugin();
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} catch(e) {
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console.log("Cannot instantiate plugin " + name + ". (" + path + ")");
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throw e;
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}
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}
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function ensureObject(parent, name) {
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if(typeof parent[name] !== "object" || parent[name] === null) {
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parent[name] = {};
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}
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}
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function ensureArray(parent, name) {
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if(!Array.isArray(parent[name])) {
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parent[name] = [];
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}
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}
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ifArgPair("entry", function(name, entry) {
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options.entry[name] = entry;
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}, function() {
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ensureObject(options, "entry");
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});
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function bindLoaders(arg, collection) {
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ifArgPair(arg, function(name, binding) {
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if(name === null) {
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name = binding;
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}
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options.module[collection].push({
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test: new RegExp("\\." + name.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&") + "$"),
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loader: binding
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});
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}, function() {
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ensureObject(options, "module");
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ensureArray(options.module, collection);
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});
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}
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bindLoaders("module-bind", "loaders");
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bindLoaders("module-bind-pre", "preLoaders");
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bindLoaders("module-bind-post", "postLoaders");
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var defineObject;
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ifArgPair("define", function(name, value) {
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if(name === null) {
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name = value;
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value = true;
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}
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defineObject[name] = value;
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}, function() {
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defineObject = {};
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}, function() {
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ensureArray(options, "plugins");
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var DefinePlugin = require("../lib/DefinePlugin");
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options.plugins.push(new DefinePlugin(defineObject));
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});
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ifArg("output-path", function(value) {
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ensureObject(options, "output");
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options.output.path = value;
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});
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ifArg("output-file", function(value) {
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ensureObject(options, "output");
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options.output.filename = value;
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});
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ifArg("output-chunk-file", function(value) {
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ensureObject(options, "output");
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options.output.chunkFilename = value;
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});
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ifArg("output-named-chunk-file", function(value) {
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ensureObject(options, "output");
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options.output.namedChunkFilename = value;
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});
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ifArg("output-source-map-file", function(value) {
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ensureObject(options, "output");
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options.output.sourceMapFilename = value;
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});
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ifArg("output-public-path", function(value) {
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ensureObject(options, "output");
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options.output.publicPath = value;
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});
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ifArg("output-jsonp-function", function(value) {
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ensureObject(options, "output");
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options.output.jsonpFunction = value;
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});
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ifBooleanArg("output-pathinfo", function() {
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ensureObject(options, "output");
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options.output.pathinfo = true;
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});
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ifArg("output-library", function(value) {
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ensureObject(options, "output");
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options.output.library = value;
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});
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ifArg("output-library-target", function(value) {
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ensureObject(options, "output");
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options.output.libraryTarget = value;
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});
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ifArg("records-input-path", function(value) {
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options.recordsInputPath = path.resolve(value);
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});
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ifArg("records-output-path", function(value) {
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options.recordsOutputPath = path.resolve(value);
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});
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ifArg("records-path", function(value) {
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options.recordsPath = path.resolve(value);
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});
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ifArg("target", function(value) {
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options.target = value;
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});
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mapArgToBooleanInverse("cache");
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ifBooleanArg("hot", function() {
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ensureArray(options, "plugins");
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var HotModuleReplacementPlugin = require("../lib/HotModuleReplacementPlugin");
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options.plugins.push(new HotModuleReplacementPlugin());
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});
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mapArgToBoolean("debug");
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ifBooleanArg("progress", function() {
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var ProgressPlugin = require("../lib/ProgressPlugin");
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ensureArray(options, "plugins");
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var chars = 0, lastState, lastStateTime;
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options.plugins.push(new ProgressPlugin(function(percentage, msg) {
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var state = msg;
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if(percentage < 1) {
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percentage = Math.floor(percentage * 100);
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msg = percentage + "% " + msg;
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if(percentage < 100) {
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msg = " " + msg;
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}
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if(percentage < 10) {
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msg = " " + msg;
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}
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}
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if(options.profile) {
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state = state.replace(/^\d+\/\d+\s+/, "");
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if(percentage === 0) {
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lastState = null;
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lastStateTime = +new Date();
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} else if(state !== lastState || percentage === 1) {
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var now = +new Date();
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if(lastState) {
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var stateMsg = (now - lastStateTime) + "ms " + lastState;
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goToLineStart(stateMsg);
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process.stderr.write(stateMsg + "\n");
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chars = 0;
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}
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lastState = state;
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lastStateTime = now;
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}
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}
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goToLineStart(msg);
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process.stderr.write(msg);
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}));
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function goToLineStart(nextMessage) {
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var str = "";
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for(; chars > nextMessage.length; chars--) {
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str += "\b \b";
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}
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chars = nextMessage.length;
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for(var i = 0; i < chars; i++) {
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str += "\b";
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}
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if(str) process.stderr.write(str);
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}
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});
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ifArg("devtool", function(value) {
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options.devtool = value;
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});
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function processResolveAlias(arg, key) {
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ifArgPair(arg, function(name, value) {
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if(!name) {
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throw new Error("--" + arg + " <string>=<string>");
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}
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ensureObject(options, key);
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ensureObject(options[key], "alias");
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options[key].alias[name] = value;
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});
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}
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processResolveAlias("resolve-alias", "resolve");
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processResolveAlias("resolve-loader-alias", "resolveLoader");
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ifArg("optimize-max-chunks", function(value) {
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ensureArray(options, "plugins");
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var LimitChunkCountPlugin = require("../lib/optimize/LimitChunkCountPlugin");
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options.plugins.push(new LimitChunkCountPlugin({
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maxChunks: parseInt(value, 10)
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}));
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});
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ifArg("optimize-min-chunk-size", function(value) {
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ensureArray(options, "plugins");
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var MinChunkSizePlugin = require("../lib/optimize/MinChunkSizePlugin");
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options.plugins.push(new MinChunkSizePlugin({
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minChunkSize: parseInt(value, 10)
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}));
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});
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ifBooleanArg("optimize-minimize", function() {
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ensureArray(options, "plugins");
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var UglifyJsPlugin = require("../lib/optimize/UglifyJsPlugin");
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options.plugins.push(new UglifyJsPlugin());
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});
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ifBooleanArg("optimize-occurence-order", function() {
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ensureArray(options, "plugins");
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var OccurenceOrderPlugin = require("../lib/optimize/OccurenceOrderPlugin");
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options.plugins.push(new OccurenceOrderPlugin());
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});
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ifBooleanArg("optimize-dedupe", function() {
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ensureArray(options, "plugins");
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var DedupePlugin = require("../lib/optimize/DedupePlugin");
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options.plugins.push(new DedupePlugin());
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});
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ifArg("prefetch", function(request) {
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ensureArray(options, "plugins");
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var PrefetchPlugin = require("../lib/PrefetchPlugin");
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options.plugins.push(new PrefetchPlugin(request));
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});
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ifArg("provide", function(value) {
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ensureArray(options, "plugins");
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var idx = value.indexOf("=");
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var name;
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if(idx >= 0) {
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name = value.substr(0, idx);
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value = value.substr(idx + 1);
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} else {
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name = value;
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}
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var ProvidePlugin = require("../lib/ProvidePlugin");
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options.plugins.push(new ProvidePlugin(name, value));
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});
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ifBooleanArg("labeled-modules", function() {
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ensureArray(options, "plugins");
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var LabeledModulesPlugin = require("../lib/dependencies/LabeledModulesPlugin");
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options.plugins.push(new LabeledModulesPlugin());
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});
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ifArg("plugin", function(value) {
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ensureArray(options, "plugins");
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options.plugins.push(loadPlugin(value));
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});
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mapArgToBoolean("bail");
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mapArgToBoolean("profile");
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if(!options.output || !options.output.filename) {
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ensureObject(options, "output");
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if(convertOptions && convertOptions.outputFilename) {
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options.output.path = path.dirname(convertOptions.outputFilename);
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options.output.filename = path.basename(convertOptions.outputFilename);
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} else if(argv._.length > 0) {
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options.output.filename = argv._.pop();
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options.output.path = path.dirname(options.output.filename);
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options.output.filename = path.basename(options.output.filename);
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} else {
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optimist.showHelp();
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process.exit(-1);
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}
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}
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if(argv._.length > 0) {
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if(Array.isArray(options.entry) || typeof options.entry === "string") {
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options.entry = {
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main: options.entry
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};
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}
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ensureObject(options, "entry");
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function addTo(name, entry) {
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if(options.entry[name]) {
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if(!Array.isArray(options.entry[name])) {
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options.entry[name] = [options.entry[name]];
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}
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options.entry[name].push(entry);
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} else {
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options.entry[name] = entry;
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}
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}
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argv._.forEach(function(content) {
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var i = content.indexOf("=");
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var j = content.indexOf("?");
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if(i < 0 || (j >= 0 && j < i)) {
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var resolved = path.resolve(content);
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if(fs.existsSync(resolved)) {
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addTo("main", resolved);
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} else {
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addTo("main", content);
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}
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} else {
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addTo(content.substr(0, i), content.substr(i + 1));
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}
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});
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}
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}
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return options;
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};
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