96 lines
2.8 KiB
JavaScript
96 lines
2.8 KiB
JavaScript
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"use strict";
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const path = require("path");
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const emojisList = require("emojis-list");
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const getHashDigest = require("./getHashDigest");
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const emojiRegex = /[\uD800-\uDFFF]./;
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const emojiList = emojisList.filter(emoji => emojiRegex.test(emoji));
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const emojiCache = {};
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function encodeStringToEmoji(content, length) {
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if(emojiCache[content]) return emojiCache[content];
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length = length || 1;
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const emojis = [];
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do {
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const index = Math.floor(Math.random() * emojiList.length);
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emojis.push(emojiList[index]);
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emojiList.splice(index, 1);
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} while(--length > 0);
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const emojiEncoding = emojis.join("");
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emojiCache[content] = emojiEncoding;
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return emojiEncoding;
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}
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function interpolateName(loaderContext, name, options) {
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let filename;
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if(typeof name === "function") {
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filename = name(loaderContext.resourcePath);
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} else {
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filename = name || "[hash].[ext]";
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}
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const context = options.context;
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const content = options.content;
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const regExp = options.regExp;
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let ext = "bin";
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let basename = "file";
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let directory = "";
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let folder = "";
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if(loaderContext.resourcePath) {
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const parsed = path.parse(loaderContext.resourcePath);
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let resourcePath = loaderContext.resourcePath;
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if(parsed.ext) {
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ext = parsed.ext.substr(1);
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}
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if(parsed.dir) {
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basename = parsed.name;
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resourcePath = parsed.dir + path.sep;
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}
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if(typeof context !== "undefined") {
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directory = path.relative(context, resourcePath + "_").replace(/\\/g, "/").replace(/\.\.(\/)?/g, "_$1");
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directory = directory.substr(0, directory.length - 1);
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} else {
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directory = resourcePath.replace(/\\/g, "/").replace(/\.\.(\/)?/g, "_$1");
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}
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if(directory.length === 1) {
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directory = "";
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} else if(directory.length > 1) {
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folder = path.basename(directory);
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}
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}
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let url = filename;
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if(content) {
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// Match hash template
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url = url
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.replace(
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/\[(?:(\w+):)?hash(?::([a-z]+\d*))?(?::(\d+))?\]/ig,
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(all, hashType, digestType, maxLength) => getHashDigest(content, hashType, digestType, parseInt(maxLength, 10))
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)
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.replace(
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/\[emoji(?::(\d+))?\]/ig,
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(all, length) => encodeStringToEmoji(content, length)
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);
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}
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url = url
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.replace(/\[ext\]/ig, () => ext)
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.replace(/\[name\]/ig, () => basename)
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.replace(/\[path\]/ig, () => directory)
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.replace(/\[folder\]/ig, () => folder);
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if(regExp && loaderContext.resourcePath) {
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const match = loaderContext.resourcePath.match(new RegExp(regExp));
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match && match.forEach((matched, i) => {
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url = url.replace(
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new RegExp("\\[" + i + "\\]", "ig"),
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matched
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);
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});
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}
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if(typeof loaderContext.options === "object" && typeof loaderContext.options.customInterpolateName === "function") {
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url = loaderContext.options.customInterpolateName.call(loaderContext, url, name, options);
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}
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return url;
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}
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module.exports = interpolateName;
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