
Security News
Oracle Drags Its Feet in the JavaScript Trademark Dispute
Oracle seeks to dismiss fraud claims in the JavaScript trademark dispute, delaying the case and avoiding questions about its right to the name.
uniquefilename
Advanced tools
A module to get a filename - that doesn't already exist on the filesystem - using incremental values.
npm install uniquefilename
var uniquefilename = require('uniquefilename');
options = {};
uniquefilename.get('/path/to/dir/file.jpg', options, function(filename) {
// filename might be "/path/to/dir/file.jpg",
// "/path/to/dir/file-2.jpg", "/path/to/dir/file-3.jpg", etc...
// depending on the files that exist on your filesystem
});
If a callback is not supplied, a Promise is returned (using bluebird).
var uniquefilename = require('uniquefilename');
uniquefilename.get('/path/to/dir/file.jpg', {}).then(function (filename) {
console.log(filename);
});
var uniquefilename = require('uniquefilename');
options = {separator: '~', paddingCharacter: '0', paddingSize: 4, mode: 'alphanumeric'};
uniquefilename.get('/path/to/dir/file.jpg', options, function(filename) {
// filename might be "/path/to/dir/file.jpg",
// "/path/to/dir/file~000h.jpg", "/path/to/dir/file~00h9.jpg", etc...
// depending on the files that exist on your filesystem
});
If the specified filename exists, the separator will be added before the incremental value such as: file{separator}2.jpg
The default value is '-'
.
The mode allows you to specify which characters to use to generate the incremental value (the string after the separator)
The default value is 'numeric'
.
'numeric'
Using the following characters: 1234567890
'alpha'
Using the following characters: abcdefghijklmnopqrstuvwxyz
'ALPHA'
Using the following characters: ABCDEFGHIJKLMNOPQRSTUVWXYZ
'alphanumeric'
Using the following characters: 0123456789abcdefghijklmnopqrstuvwxyz
'ALPHANUMERIC'
Using the following characters: 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ
'charset'
You must specify the characters you wish to use in the charset
optionIf you wish to left-pad the incremental values with a character, use this option. Here's an example :
var uniquefilename = require('uniquefilename');
options = {mode: 'alpha', paddingCharacter: '0', paddingSize: 3};
uniquefilename.get('/path/to/dir/file.jpg', options, function(filename) {
// filename might be "/path/to/dir/file.jpg",
// "/path/to/dir/file-002.jpg", "/path/to/dir/file-045.jpg", etc...
// depending on the files that exist on your filesystem
});
Multer is a node.js middleware for handling multipart/form-data
, which is primarily used for uploading files.
The following example shows you how to use multer along with this module to move an uploaded file to a unique filename :
var multer = require('multer');
var path = require('path');
var uniquefilename = require('uniquefilename');
router.use(multer({
storage: multer.diskStorage({
destination: function (req, file, cb) {
cb(null, './public/uploads/')
},
filename: function (req, file, cb) {
originalname = path.resolve('./public/uploads/' + file.originalname);
options = {};
uniquefilename.get(originalname, options, function(filename) {
cb(null, path.basename(filename));
});
}
})
}).single('thumbnail'));
FAQs
Finds a unique filename using incremental values
We found that uniquefilename demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Oracle seeks to dismiss fraud claims in the JavaScript trademark dispute, delaying the case and avoiding questions about its right to the name.
Security News
The Linux Foundation is warning open source developers that compliance with global sanctions is mandatory, highlighting legal risks and restrictions on contributions.
Security News
Maven Central now validates Sigstore signatures, making it easier for developers to verify the provenance of Java packages.