File size: 2,533 Bytes
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var fs = require('fs');
var ncp = require('ncp').ncp;
var path = require('path');
var rimraf = require('rimraf');
var mkdirp = require('mkdirp');
module.exports = mv;
function mv(source, dest, options, cb){
if (typeof options === 'function') {
cb = options;
options = {};
}
var shouldMkdirp = !!options.mkdirp;
var clobber = options.clobber !== false;
var limit = options.limit || 16;
if (shouldMkdirp) {
mkdirs();
} else {
doRename();
}
function mkdirs() {
mkdirp(path.dirname(dest), function(err) {
if (err) return cb(err);
doRename();
});
}
function doRename() {
if (clobber) {
fs.rename(source, dest, function(err) {
if (!err) return cb();
if (err.code !== 'EXDEV') return cb(err);
moveFileAcrossDevice(source, dest, clobber, limit, cb);
});
} else {
fs.link(source, dest, function(err) {
if (err) {
if (err.code === 'EXDEV') {
moveFileAcrossDevice(source, dest, clobber, limit, cb);
return;
}
if (err.code === 'EISDIR' || err.code === 'EPERM') {
moveDirAcrossDevice(source, dest, clobber, limit, cb);
return;
}
cb(err);
return;
}
fs.unlink(source, cb);
});
}
}
}
function moveFileAcrossDevice(source, dest, clobber, limit, cb) {
var outFlags = clobber ? 'w' : 'wx';
var ins = fs.createReadStream(source);
var outs = fs.createWriteStream(dest, {flags: outFlags});
ins.on('error', function(err){
ins.destroy();
outs.destroy();
outs.removeListener('close', onClose);
if (err.code === 'EISDIR' || err.code === 'EPERM') {
moveDirAcrossDevice(source, dest, clobber, limit, cb);
} else {
cb(err);
}
});
outs.on('error', function(err){
ins.destroy();
outs.destroy();
outs.removeListener('close', onClose);
cb(err);
});
outs.once('close', onClose);
ins.pipe(outs);
function onClose(){
fs.unlink(source, cb);
}
}
function moveDirAcrossDevice(source, dest, clobber, limit, cb) {
var options = {
stopOnErr: true,
clobber: false,
limit: limit,
};
if (clobber) {
rimraf(dest, { disableGlob: true }, function(err) {
if (err) return cb(err);
startNcp();
});
} else {
startNcp();
}
function startNcp() {
ncp(source, dest, options, function(errList) {
if (errList) return cb(errList[0]);
rimraf(source, { disableGlob: true }, cb);
});
}
}
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