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var _ = require("lodash");
var Q = require("q");
var tmp = require("tmp");
var path = require("path");
var fs = require("graceful-fs");
var fsExtra = require("fs-extra");
var Ignore = require("fstream-ignore");
var fsUtils = {
tmp: {
file: function() {
return Q.nfcall(tmp.file.bind(tmp)).get(0)
},
dir: function() {
return Q.nfcall(tmp.dir.bind(tmp)).get(0)
}
},
list: listFiles,
stat: Q.denodeify(fs.stat),
readdir: Q.denodeify(fs.readdir),
readFile: Q.denodeify(fs.readFile),
writeFile: function(filename, data, options) {
var d = Q.defer();
try {
fs.writeFileSync(filename, data, options)
} catch(err) {
d.reject(err);
}
d.resolve();
return d.promise;
},
mkdirp: Q.denodeify(fsExtra.mkdirp),
copy: Q.denodeify(fsExtra.copy),
remove: Q.denodeify(fsExtra.remove),
symlink: Q.denodeify(fsExtra.symlink),
exists: function(path) {
var d = Q.defer();
fs.exists(path, d.resolve);
return d.promise;
},
existsSync: fs.existsSync.bind(fs),
readFileSync: fs.readFileSync.bind(fs),
clean: cleanFolder
}
// List files in a directory
function listFiles(root, options) {
options = _.defaults(options || {}, {
ignoreFiles: [],
ignoreRules: []
});
var d = Q.defer();
// Our list of files
var files = [];
var ig = Ignore({
path: root,
ignoreFiles: options.ignoreFiles
});
// Add extra rules to ignore common folders
ig.addIgnoreRules(options.ignoreRules, '__custom_stuff');
// Push each file to our list
ig.on('child', function (c) {
files.push(
c.path.substr(c.root.path.length + 1) + (c.props.Directory === true ? '/' : '')
);
});
ig.on('end', function() {
// Normalize paths on Windows
if(process.platform === 'win32') {
return d.resolve(files.map(function(file) {
return file.replace(/\\/g, '/');
}));
}
// Simply return paths otherwise
return d.resolve(files);
});
ig.on('error', d.reject);
return d.promise;
}
// Clean a folder without removing .git and .svn
// Creates it if non existant
function cleanFolder(root) {
if (!fs.existsSync(root)) return fsUtils.mkdirp(root);
return listFiles(root, {
ignoreFiles: [],
ignoreRules: [
// Skip Git and SVN stuff
'.git/',
'.svn/'
]
})
.then(function(files) {
var d = Q.defer();
_.reduce(files, function(prev, file, i) {
return prev.then(function() {
var _file = path.join(root, file);
d.notify({
i: i,
count: files.length,
file: _file
});
return fsUtils.remove(_file);
});
}, Q())
.then(function() {
d.resolve();
}, function(err) {
d.reject(err);
});
return d.promise;
});
};
module.exports = fsUtils;
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