89 lines
2.1 KiB
JavaScript
89 lines
2.1 KiB
JavaScript
'use strict';
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const fs = require('fs');
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const path = require('path');
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const glob = require('glob');
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const gitIgnore = require('ignore');
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const pify = require('pify');
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const slash = require('slash');
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const globP = pify(glob);
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const readFileP = pify(fs.readFile);
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const mapGitIgnorePatternTo = base => ignore => {
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if (ignore.startsWith('!')) {
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return '!' + path.posix.join(base, ignore.substr(1));
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}
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return path.posix.join(base, ignore);
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};
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const parseGitIgnore = (content, opts) => {
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const base = slash(path.relative(opts.cwd, path.dirname(opts.fileName)));
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return content
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.split(/\r?\n/)
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.filter(Boolean)
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.filter(l => l.charAt(0) !== '#')
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.map(mapGitIgnorePatternTo(base));
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};
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const reduceIgnore = files => {
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return files.reduce((ignores, file) => {
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ignores.add(parseGitIgnore(file.content, {
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cwd: file.cwd,
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fileName: file.filePath
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}));
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return ignores;
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}, gitIgnore());
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};
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const getIsIgnoredPredecate = (ignores, cwd) => {
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return p => ignores.ignores(slash(path.relative(cwd, p)));
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};
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const getFile = (file, cwd) => {
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const filePath = path.join(cwd, file);
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return readFileP(filePath, 'utf8')
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.then(content => ({
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content,
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cwd,
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filePath
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}));
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};
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const getFileSync = (file, cwd) => {
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const filePath = path.join(cwd, file);
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const content = fs.readFileSync(filePath, 'utf8');
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return {
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content,
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cwd,
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filePath
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};
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};
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const normalizeOpts = opts => {
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opts = opts || {};
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const ignore = opts.ignore || [];
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const cwd = opts.cwd || process.cwd();
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return {ignore, cwd};
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};
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module.exports = o => {
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const opts = normalizeOpts(o);
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return globP('**/.gitignore', {ignore: opts.ignore, cwd: opts.cwd})
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.then(paths => Promise.all(paths.map(file => getFile(file, opts.cwd))))
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.then(files => reduceIgnore(files))
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.then(ignores => getIsIgnoredPredecate(ignores, opts.cwd));
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};
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module.exports.sync = o => {
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const opts = normalizeOpts(o);
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const paths = glob.sync('**/.gitignore', {ignore: opts.ignore, cwd: opts.cwd});
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const files = paths.map(file => getFileSync(file, opts.cwd));
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const ignores = reduceIgnore(files);
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return getIsIgnoredPredecate(ignores, opts.cwd);
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};
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