Sanitize a string to be safe for use as a filename by removing directory paths and invalid characters.
npm install sanitize-filename
var sanitize = require("sanitize-filename"); // Some string that may be unsafe or invalid as a filename var UNSAFE_USER_INPUT = "~/.\u0000ssh/authorized_keys"; // Sanitize the string to be safe for use as a filename. var filename = sanitize(UNSAFE_USER_INPUT); // -> "~.sshauthorized_keys"
sanitize-filename removes the following:
Control characters (
Reserved characters (
- Unix reserved filenames (
- Trailing periods and spaces (for Windows)
- Windows reserved filenames (
The resulting string is truncated to 255 bytes in length. The string will not contain any directory paths and will be safe to use as a filename.
An empty string
"" can be returned. For example:
var sanitize = require("sanitize-filename"); sanitize("..") // -> ""
Two different inputs can return the same value. For example:
var sanitize = require("sanitize-filename"); sanitize("file?") // -> "file" sanitize ("*file*") // -> "file"
Sanitized filenames will be safe for use on modern Windows, OS X, and
Unix file systems (
FAT 8.3 filenames are not supported.
Test Your File System
The test program will use various strings (including the Big List of
Naughty Strings) to create files in the working directory. Run
npm test to run tests against your file system.
inputString by removing or replacing invalid characters.
options.replacement: optional, string/function, default:
"". If passed as a string, it's used as the replacement for invalid characters. If passed as a function, the function will be called with the invalid characters and it's return value will be used as the replacement. See
String.prototype.replacefor more info.