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'use strict';
const arrayUnion = require('array-union');
const glob = require('glob');
const fastGlob = require('fast-glob');
const dirGlob = require('dir-glob');
const gitignore = require('./gitignore');
const DEFAULT_FILTER = () => false;
const isNegative = pattern => pattern[0] === '!';
const assertPatternsInput = patterns => {
if (!patterns.every(x => typeof x === 'string')) {
throw new TypeError('Patterns must be a string or an array of strings');
}
};
const generateGlobTasks = (patterns, taskOpts) => {
patterns = [].concat(patterns);
assertPatternsInput(patterns);
const globTasks = [];
taskOpts = Object.assign({
ignore: [],
expandDirectories: true
}, taskOpts);
patterns.forEach((pattern, i) => {
if (isNegative(pattern)) {
return;
}
const ignore = patterns
.slice(i)
.filter(isNegative)
.map(pattern => pattern.slice(1));
const opts = Object.assign({}, taskOpts, {
ignore: taskOpts.ignore.concat(ignore)
});
globTasks.push({pattern, opts});
});
return globTasks;
};
const globDirs = (task, fn) => {
let opts = {cwd: task.opts.cwd};
if (Array.isArray(task.opts.expandDirectories)) {
opts = Object.assign(opts, {files: task.opts.expandDirectories});
} else if (typeof task.opts.expandDirectories === 'object') {
opts = Object.assign(opts, task.opts.expandDirectories);
}
return fn(task.pattern, opts);
};
const getPattern = (task, fn) => task.opts.expandDirectories ? globDirs(task, fn) : [task.pattern];
module.exports = (patterns, opts) => {
let globTasks;
try {
globTasks = generateGlobTasks(patterns, opts);
} catch (err) {
return Promise.reject(err);
}
const getTasks = Promise.all(globTasks.map(task => Promise.resolve(getPattern(task, dirGlob))
.then(globs => Promise.all(globs.map(glob => ({
pattern: glob,
opts: task.opts
}))))
))
.then(tasks => arrayUnion.apply(null, tasks));
const getFilter = () => {
return Promise.resolve(
opts && opts.gitignore ?
gitignore({cwd: opts.cwd, ignore: opts.ignore}) :
DEFAULT_FILTER
);
};
return getFilter()
.then(filter => {
return getTasks
.then(tasks => Promise.all(tasks.map(task => fastGlob(task.pattern, task.opts))))
.then(paths => arrayUnion.apply(null, paths))
.then(paths => paths.filter(p => !filter(p)));
});
};
module.exports.sync = (patterns, opts) => {
const globTasks = generateGlobTasks(patterns, opts);
const getFilter = () => {
return opts && opts.gitignore ?
gitignore.sync({cwd: opts.cwd, ignore: opts.ignore}) :
DEFAULT_FILTER;
};
const tasks = globTasks.reduce((tasks, task) => {
const newTask = getPattern(task, dirGlob.sync).map(glob => ({
pattern: glob,
opts: task.opts
}));
return tasks.concat(newTask);
}, []);
const filter = getFilter();
return tasks.reduce(
(matches, task) => arrayUnion(matches, fastGlob.sync(task.pattern, task.opts)),
[]
).filter(p => !filter(p));
};
module.exports.generateGlobTasks = generateGlobTasks;
module.exports.hasMagic = (patterns, opts) => []
.concat(patterns)
.some(pattern => glob.hasMagic(pattern, opts));
module.exports.gitignore = gitignore;