Crate pct_str

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This crate provides two types, PctStr and PctString, similar to str and String, representing percent-encoded strings used in URL, URI, IRI, etc. You can use them to encode, decode and compare percent-encoded strings.

Basic usage

You can parse/decode percent-encoded strings by building a PctStr slice over a str slice.

use pct_str::PctStr;

let pct_str = PctStr::new("Hello%20World%21").unwrap();
assert_eq!(pct_str, "Hello World!");

let decoded_string: String = pct_str.decode();
assert_eq!(decoded_string, "Hello World!")

To create new percent-encoded strings, use the PctString to copy or encode new strings.

use pct_str::{PctString, URIReserved};

// Copy the given percent-encoded string.
let pct_string = PctString::new("Hello%20World%21").unwrap();

// Encode the given regular string.
let pct_string = PctString::encode("Hello World!".chars(), URIReserved);

assert_eq!(pct_string.as_str(), "Hello%20World%21");

You can choose which character will be percent-encoded by the encode function by implementing the Encoder trait.

use pct_str::{URIReserved, PctString};

struct CustomEncoder;

impl pct_str::Encoder for CustomEncoder {
  fn encode(&self, c: char) -> bool {
    URIReserved.encode(c) || c.is_uppercase()

let pct_string = PctString::encode("Hello World!".chars(), CustomEncoder);
assert_eq!(pct_string.as_str(), "%48ello%20%57orld%21")