182 lines
		
	
	
		
			4.4 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			182 lines
		
	
	
		
			4.4 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
'use strict';
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const fs = require('fs');
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const arrayUnion = require('array-union');
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const merge2 = require('merge2');
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const fastGlob = require('fast-glob');
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const dirGlob = require('dir-glob');
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const gitignore = require('./gitignore');
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const {FilterStream, UniqueStream} = require('./stream-utils');
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const DEFAULT_FILTER = () => false;
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const isNegative = pattern => pattern[0] === '!';
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const assertPatternsInput = patterns => {
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	if (!patterns.every(pattern => typeof pattern === 'string')) {
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		throw new TypeError('Patterns must be a string or an array of strings');
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	}
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};
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const checkCwdOption = (options = {}) => {
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	if (!options.cwd) {
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		return;
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	}
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	let stat;
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	try {
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		stat = fs.statSync(options.cwd);
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	} catch {
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		return;
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	}
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	if (!stat.isDirectory()) {
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		throw new Error('The `cwd` option must be a path to a directory');
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	}
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};
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const getPathString = p => p.stats instanceof fs.Stats ? p.path : p;
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const generateGlobTasks = (patterns, taskOptions) => {
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	patterns = arrayUnion([].concat(patterns));
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	assertPatternsInput(patterns);
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	checkCwdOption(taskOptions);
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	const globTasks = [];
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	taskOptions = {
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		ignore: [],
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		expandDirectories: true,
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		...taskOptions
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	};
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	for (const [index, pattern] of patterns.entries()) {
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		if (isNegative(pattern)) {
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			continue;
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		}
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		const ignore = patterns
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			.slice(index)
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			.filter(pattern => isNegative(pattern))
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			.map(pattern => pattern.slice(1));
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		const options = {
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			...taskOptions,
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			ignore: taskOptions.ignore.concat(ignore)
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		};
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		globTasks.push({pattern, options});
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	}
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	return globTasks;
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};
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const globDirs = (task, fn) => {
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	let options = {};
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	if (task.options.cwd) {
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		options.cwd = task.options.cwd;
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	}
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	if (Array.isArray(task.options.expandDirectories)) {
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		options = {
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			...options,
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			files: task.options.expandDirectories
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		};
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	} else if (typeof task.options.expandDirectories === 'object') {
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		options = {
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			...options,
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			...task.options.expandDirectories
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		};
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	}
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	return fn(task.pattern, options);
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};
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const getPattern = (task, fn) => task.options.expandDirectories ? globDirs(task, fn) : [task.pattern];
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const getFilterSync = options => {
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	return options && options.gitignore ?
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		gitignore.sync({cwd: options.cwd, ignore: options.ignore}) :
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		DEFAULT_FILTER;
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};
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const globToTask = task => glob => {
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	const {options} = task;
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	if (options.ignore && Array.isArray(options.ignore) && options.expandDirectories) {
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		options.ignore = dirGlob.sync(options.ignore);
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	}
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	return {
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		pattern: glob,
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		options
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	};
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};
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module.exports = async (patterns, options) => {
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	const globTasks = generateGlobTasks(patterns, options);
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	const getFilter = async () => {
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		return options && options.gitignore ?
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			gitignore({cwd: options.cwd, ignore: options.ignore}) :
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			DEFAULT_FILTER;
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	};
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	const getTasks = async () => {
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		const tasks = await Promise.all(globTasks.map(async task => {
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			const globs = await getPattern(task, dirGlob);
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			return Promise.all(globs.map(globToTask(task)));
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		}));
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		return arrayUnion(...tasks);
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	};
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	const [filter, tasks] = await Promise.all([getFilter(), getTasks()]);
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	const paths = await Promise.all(tasks.map(task => fastGlob(task.pattern, task.options)));
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	return arrayUnion(...paths).filter(path_ => !filter(getPathString(path_)));
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};
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module.exports.sync = (patterns, options) => {
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	const globTasks = generateGlobTasks(patterns, options);
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	const tasks = [];
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	for (const task of globTasks) {
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		const newTask = getPattern(task, dirGlob.sync).map(globToTask(task));
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		tasks.push(...newTask);
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	}
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	const filter = getFilterSync(options);
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	let matches = [];
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	for (const task of tasks) {
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		matches = arrayUnion(matches, fastGlob.sync(task.pattern, task.options));
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	}
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	return matches.filter(path_ => !filter(path_));
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};
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module.exports.stream = (patterns, options) => {
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	const globTasks = generateGlobTasks(patterns, options);
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	const tasks = [];
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	for (const task of globTasks) {
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		const newTask = getPattern(task, dirGlob.sync).map(globToTask(task));
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		tasks.push(...newTask);
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	}
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	const filter = getFilterSync(options);
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	const filterStream = new FilterStream(p => !filter(p));
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	const uniqueStream = new UniqueStream();
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	return merge2(tasks.map(task => fastGlob.stream(task.pattern, task.options)))
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		.pipe(filterStream)
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		.pipe(uniqueStream);
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};
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module.exports.generateGlobTasks = generateGlobTasks;
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module.exports.hasMagic = (patterns, options) => []
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	.concat(patterns)
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	.some(pattern => fastGlob.isDynamicPattern(pattern, options));
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module.exports.gitignore = gitignore;
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