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node_modules/webpack/lib/dependencies/CssUrlDependency.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Ivan Kopeykin @vankop
+*/
+
+"use strict";
+
+const makeSerializable = require("../util/makeSerializable");
+const memoize = require("../util/memoize");
+const ModuleDependency = require("./ModuleDependency");
+
+/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
+/** @typedef {import("../ChunkGraph")} ChunkGraph */
+/** @typedef {import("../Dependency")} Dependency */
+/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
+/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
+/** @typedef {import("../Module")} Module */
+/** @typedef {import("../ModuleGraph")} ModuleGraph */
+/** @typedef {import("../ModuleGraphConnection")} ModuleGraphConnection */
+/** @typedef {import("../ModuleGraphConnection").ConnectionState} ConnectionState */
+/** @typedef {import("../util/Hash")} Hash */
+/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */
+
+const getRawDataUrlModule = memoize(() => require("../asset/RawDataUrlModule"));
+
+class CssUrlDependency extends ModuleDependency {
+	/**
+	 * @param {string} request request
+	 * @param {[number, number]} range range of the argument
+	 * @param {string} cssFunctionKind kind of css function, e. g. url(), image()
+	 */
+	constructor(request, range, cssFunctionKind) {
+		super(request);
+		this.range = range;
+		this.cssFunctionKind = cssFunctionKind;
+	}
+
+	get type() {
+		return "css url()";
+	}
+
+	get category() {
+		return "url";
+	}
+
+	/**
+	 * @param {string} context context directory
+	 * @returns {Module} a module
+	 */
+	createIgnoredModule(context) {
+		const RawDataUrlModule = getRawDataUrlModule();
+		return new RawDataUrlModule("data:,", `ignored-asset`, `(ignored asset)`);
+	}
+
+	serialize(context) {
+		const { write } = context;
+		write(this.cssFunctionKind);
+		super.serialize(context);
+	}
+
+	deserialize(context) {
+		const { read } = context;
+		this.cssFunctionKind = read();
+		super.deserialize(context);
+	}
+}
+
+const cssEscapeString = str => {
+	let countWhiteOrBracket = 0;
+	let countQuotation = 0;
+	let countApostrophe = 0;
+	for (let i = 0; i < str.length; i++) {
+		const cc = str.charCodeAt(i);
+		switch (cc) {
+			case 9: // tab
+			case 10: // nl
+			case 32: // space
+			case 40: // (
+			case 41: // )
+				countWhiteOrBracket++;
+				break;
+			case 34:
+				countQuotation++;
+				break;
+			case 39:
+				countApostrophe++;
+				break;
+		}
+	}
+	if (countWhiteOrBracket < 2) {
+		return str.replace(/[\n\t ()'"\\]/g, m => `\\${m}`);
+	} else if (countQuotation <= countApostrophe) {
+		return `"${str.replace(/[\n"\\]/g, m => `\\${m}`)}"`;
+	} else {
+		return `'${str.replace(/[\n'\\]/g, m => `\\${m}`)}'`;
+	}
+};
+
+CssUrlDependency.Template = class CssUrlDependencyTemplate extends (
+	ModuleDependency.Template
+) {
+	/**
+	 * @param {Dependency} dependency the dependency for which the template should be applied
+	 * @param {ReplaceSource} source the current replace source which can be modified
+	 * @param {DependencyTemplateContext} templateContext the context object
+	 * @returns {void}
+	 */
+	apply(
+		dependency,
+		source,
+		{ runtime, moduleGraph, runtimeTemplate, codeGenerationResults }
+	) {
+		const dep = /** @type {CssUrlDependency} */ (dependency);
+
+		source.replace(
+			dep.range[0],
+			dep.range[1] - 1,
+			`${dep.cssFunctionKind}(${cssEscapeString(
+				runtimeTemplate.assetUrl({
+					publicPath: "",
+					runtime,
+					module: moduleGraph.getModule(dep),
+					codeGenerationResults
+				})
+			)})`
+		);
+	}
+};
+
+makeSerializable(CssUrlDependency, "webpack/lib/dependencies/CssUrlDependency");
+
+module.exports = CssUrlDependency;