source control 1.1

Tomas

2022-05-19 957a1f10a06fdbb76f1a0ba94fe44126c613fee3

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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author Tobias Koppers @sokra
*/
"use strict";
 
const path = require("path");
const NORMALIZE_SLASH_DIRECTION_REGEXP = /\\/g;
const PATH_CHARS_REGEXP = /[-[\]{}()*+?.,\\^$|#\s]/g;
const SEPARATOR_REGEXP = /[/\\]$/;
const FRONT_OR_BACK_BANG_REGEXP = /^!|!$/g;
const INDEX_JS_REGEXP = /\/index.js(!|\?|\(query\))/g;
const MATCH_RESOURCE_REGEXP = /!=!/;
 
const normalizeBackSlashDirection = request => {
    return request.replace(NORMALIZE_SLASH_DIRECTION_REGEXP, "/");
};
 
const createRegExpForPath = path => {
    const regexpTypePartial = path.replace(PATH_CHARS_REGEXP, "\\$&");
    return new RegExp(`(^|!)${regexpTypePartial}`, "g");
};
 
class RequestShortener {
    constructor(directory) {
        directory = normalizeBackSlashDirection(directory);
        if (SEPARATOR_REGEXP.test(directory)) {
            directory = directory.substr(0, directory.length - 1);
        }
 
        if (directory) {
            this.currentDirectoryRegExp = createRegExpForPath(directory);
        }
 
        const dirname = path.dirname(directory);
        const endsWithSeparator = SEPARATOR_REGEXP.test(dirname);
        const parentDirectory = endsWithSeparator
            ? dirname.substr(0, dirname.length - 1)
            : dirname;
        if (parentDirectory && parentDirectory !== directory) {
            this.parentDirectoryRegExp = createRegExpForPath(`${parentDirectory}/`);
        }
 
        if (__dirname.length >= 2) {
            const buildins = normalizeBackSlashDirection(path.join(__dirname, ".."));
            const buildinsAsModule =
                this.currentDirectoryRegExp &&
                this.currentDirectoryRegExp.test(buildins);
            this.buildinsAsModule = buildinsAsModule;
            this.buildinsRegExp = createRegExpForPath(buildins);
        }
 
        this.cache = new Map();
    }
 
    shorten(request) {
        if (!request) return request;
        const cacheEntry = this.cache.get(request);
        if (cacheEntry !== undefined) {
            return cacheEntry;
        }
        let result = normalizeBackSlashDirection(request);
        if (this.buildinsAsModule && this.buildinsRegExp) {
            result = result.replace(this.buildinsRegExp, "!(webpack)");
        }
        if (this.currentDirectoryRegExp) {
            result = result.replace(this.currentDirectoryRegExp, "!.");
        }
        if (this.parentDirectoryRegExp) {
            result = result.replace(this.parentDirectoryRegExp, "!../");
        }
        if (!this.buildinsAsModule && this.buildinsRegExp) {
            result = result.replace(this.buildinsRegExp, "!(webpack)");
        }
        result = result.replace(INDEX_JS_REGEXP, "$1");
        result = result.replace(FRONT_OR_BACK_BANG_REGEXP, "");
        result = result.replace(MATCH_RESOURCE_REGEXP, " = ");
        this.cache.set(request, result);
        return result;
    }
}
 
module.exports = RequestShortener;