A tiny Rust library for performing encoding and decoding of URL paths and arguments. It percent-encodes everything except alphanumerics and -, _, ., ~.

When decoding + is not treated as a space. Error recovery from incomplete percent-escapes follows the WHATWG URL standard.

To encode a string, use the following:

use urlencoding::encode;

let encoded = encode("This string will be encoded to be URI-safe.");
println!("{}", encoded);
// This%20string%20will%20be%20encoded%20to%20be%20URI-safe.

Decoding to a string supports UTF-8:

use urlencoding::decode;

let decoded = decode("%F0%9F%91%BE%20Exterminate%21")?;
println!("{}", decoded);
// 👾 Exterminate!

To decode allowing arbitrary bytes and invalid UTF-8:

use urlencoding::decode_binary;

let binary = decode_binary(b"%F1%F2%F3%C0%C1%C2");
let decoded = String::from_utf8_lossy(&binary);

This library returns Cow to avoid allocating when decoding/encoding is not needed. Call .into_owned() on the Cow to get a Vec or String.

Encoding can also avoid unnecesary allocations:

use urlencoding::Encoded;

format!("https://lib.rs?q={}", Encoded("argument encoded without a temporay string"));
// https://lib.rs?q=argument%20encoded%20without%20a%20temporay%20string

This project is licensed under the MIT license. For more information see the LICENSE file.