chushihua

node_modules/webpack/lib/TemplatedPathPlugin.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Jason Anderson @diurnalist
+*/
+"use strict";
+
+const REGEXP_HASH = /\[hash(?::(\d+))?\]/gi,
+	REGEXP_CHUNKHASH = /\[chunkhash(?::(\d+))?\]/gi,
+	REGEXP_NAME = /\[name\]/gi,
+	REGEXP_ID = /\[id\]/gi,
+	REGEXP_FILE = /\[file\]/gi,
+	REGEXP_QUERY = /\[query\]/gi,
+	REGEXP_FILEBASE = /\[filebase\]/gi;
+
+// Using global RegExp for .test is dangerous
+// We use a normal RegExp instead of .test
+const REGEXP_HASH_FOR_TEST = new RegExp(REGEXP_HASH.source, "i"),
+	REGEXP_CHUNKHASH_FOR_TEST = new RegExp(REGEXP_CHUNKHASH.source, "i"),
+	REGEXP_NAME_FOR_TEST = new RegExp(REGEXP_NAME.source, "i");
+
+// TODO: remove in webpack 3
+// Backwards compatibility; expose regexes on Template object
+const Template = require("./Template");
+Template.REGEXP_HASH = REGEXP_HASH;
+Template.REGEXP_CHUNKHASH = REGEXP_CHUNKHASH;
+Template.REGEXP_NAME = REGEXP_NAME;
+Template.REGEXP_ID = REGEXP_ID;
+Template.REGEXP_FILE = REGEXP_FILE;
+Template.REGEXP_QUERY = REGEXP_QUERY;
+Template.REGEXP_FILEBASE = REGEXP_FILEBASE;
+
+const withHashLength = (replacer, handlerFn) => {
+	return function(_, hashLength) {
+		const length = hashLength && parseInt(hashLength, 10);
+		if(length && handlerFn) {
+			return handlerFn(length);
+		}
+		const hash = replacer.apply(this, arguments);
+		return length ? hash.slice(0, length) : hash;
+	};
+};
+
+const getReplacer = (value, allowEmpty) => {
+	return function(match) {
+		// last argument in replacer is the entire input string
+		const input = arguments[arguments.length - 1];
+		if(value === null || value === undefined) {
+			if(!allowEmpty) throw new Error(`Path variable ${match} not implemented in this context: ${input}`);
+			return "";
+		} else {
+			return `${value}`;
+		}
+	};
+};
+
+const replacePathVariables = (path, data) => {
+	const chunk = data.chunk;
+	const chunkId = chunk && chunk.id;
+	const chunkName = chunk && (chunk.name || chunk.id);
+	const chunkHash = chunk && (chunk.renderedHash || chunk.hash);
+	const chunkHashWithLength = chunk && chunk.hashWithLength;
+
+	if(typeof path === "function") {
+		path = path(data);
+	}
+
+	if(data.noChunkHash && REGEXP_CHUNKHASH_FOR_TEST.test(path)) {
+		throw new Error(`Cannot use [chunkhash] for chunk in '${path}' (use [hash] instead)`);
+	}
+
+	return path
+		.replace(REGEXP_HASH, withHashLength(getReplacer(data.hash), data.hashWithLength))
+		.replace(REGEXP_CHUNKHASH, withHashLength(getReplacer(chunkHash), chunkHashWithLength))
+		.replace(REGEXP_ID, getReplacer(chunkId))
+		.replace(REGEXP_NAME, getReplacer(chunkName))
+		.replace(REGEXP_FILE, getReplacer(data.filename))
+		.replace(REGEXP_FILEBASE, getReplacer(data.basename))
+		// query is optional, it's OK if it's in a path but there's nothing to replace it with
+		.replace(REGEXP_QUERY, getReplacer(data.query, true));
+};
+
+class TemplatedPathPlugin {
+	apply(compiler) {
+		compiler.plugin("compilation", compilation => {
+			const mainTemplate = compilation.mainTemplate;
+
+			mainTemplate.plugin("asset-path", replacePathVariables);
+
+			mainTemplate.plugin("global-hash", function(chunk, paths) {
+				const outputOptions = this.outputOptions;
+				const publicPath = outputOptions.publicPath || "";
+				const filename = outputOptions.filename || "";
+				const chunkFilename = outputOptions.chunkFilename || outputOptions.filename;
+				if(REGEXP_HASH_FOR_TEST.test(publicPath) || REGEXP_CHUNKHASH_FOR_TEST.test(publicPath) || REGEXP_NAME_FOR_TEST.test(publicPath))
+					return true;
+				if(REGEXP_HASH_FOR_TEST.test(filename))
+					return true;
+				if(REGEXP_HASH_FOR_TEST.test(chunkFilename))
+					return true;
+				if(REGEXP_HASH_FOR_TEST.test(paths.join("|")))
+					return true;
+			});
+
+			mainTemplate.plugin("hash-for-chunk", function(hash, chunk) {
+				const outputOptions = this.outputOptions;
+				const chunkFilename = outputOptions.chunkFilename || outputOptions.filename;
+				if(REGEXP_CHUNKHASH_FOR_TEST.test(chunkFilename))
+					hash.update(JSON.stringify(chunk.getChunkMaps(false, true).hash));
+				if(REGEXP_NAME_FOR_TEST.test(chunkFilename))
+					hash.update(JSON.stringify(chunk.getChunkMaps(false, true).name));
+			});
+		});
+	}
+}
+
+module.exports = TemplatedPathPlugin;