'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]) {
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return emojiCache[content];
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}
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length = length || 1;
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const emojis = [];
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do {
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if (!emojiList.length) {
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throw new Error('Ran out of emoji');
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}
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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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const hasQuery =
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loaderContext.resourceQuery && loaderContext.resourceQuery.length > 1;
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if (typeof name === 'function') {
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filename = name(
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loaderContext.resourcePath,
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hasQuery ? loaderContext.resourceQuery : undefined
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);
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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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let query = '';
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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
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.relative(context, resourcePath + '_')
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.replace(/\\/g, '/')
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.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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if (loaderContext.resourceQuery && loaderContext.resourceQuery.length > 1) {
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query = loaderContext.resourceQuery;
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const hashIdx = query.indexOf('#');
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if (hashIdx >= 0) {
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query = query.substr(0, hashIdx);
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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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// `hash` and `contenthash` are same in `loader-utils` context
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// let's keep `hash` for backward compatibility
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.replace(
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/\[(?:([^[:\]]+):)?(?:hash|contenthash)(?::([a-z]+\d*))?(?::(\d+))?\]/gi,
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(all, hashType, digestType, maxLength) =>
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getHashDigest(content, hashType, digestType, parseInt(maxLength, 10))
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)
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.replace(/\[emoji(?::(\d+))?\]/gi, (all, length) =>
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encodeStringToEmoji(content, parseInt(length, 10))
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);
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}
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url = url
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.replace(/\[ext\]/gi, () => ext)
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.replace(/\[name\]/gi, () => basename)
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.replace(/\[path\]/gi, () => directory)
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.replace(/\[folder\]/gi, () => folder)
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.replace(/\[query\]/gi, () => query);
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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 &&
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match.forEach((matched, i) => {
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url = url.replace(new RegExp('\\[' + i + '\\]', 'ig'), matched);
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});
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}
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if (
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typeof loaderContext.options === 'object' &&
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typeof loaderContext.options.customInterpolateName === 'function'
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) {
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url = loaderContext.options.customInterpolateName.call(
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loaderContext,
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url,
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name,
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options
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);
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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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