createLink.js
1.61 KB
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var fs = require('./fs');
var path = require('path');
var Q = require('q');
var mkdirp = require('mkdirp');
var createError = require('./createError');
var isWin = process.platform === 'win32';
function createLink(src, dst, type) {
var dstDir = path.dirname(dst);
// Create directory
return Q.nfcall(mkdirp, dstDir)
// Check if source exists
.then(function () {
return Q.nfcall(fs.stat, src)
.fail(function (error) {
if (error.code === 'ENOENT') {
throw createError('Failed to create link to ' + path.basename(src), 'ENOENT', {
details: src + ' does not exist or points to a non-existent file'
});
}
throw error;
});
})
// Create symlink
.then(function (stat) {
type = type || (stat.isDirectory() ? 'dir' : 'file');
return Q.nfcall(fs.symlink, src, dst, type)
.fail(function (err) {
if (!isWin || err.code !== 'EPERM') {
throw err;
}
// Try with type "junction" on Windows
// Junctions behave equally to true symlinks and can be created in
// non elevated terminal (well, not always..)
return Q.nfcall(fs.symlink, src, dst, 'junction')
.fail(function (err) {
throw createError('Unable to create link to ' + path.basename(src), err.code, {
details: err.message.trim() + '\n\nTry running this command in an elevated terminal (run as root/administrator).'
});
});
});
});
}
module.exports = createLink;