drought 0.0.1

The Directive Rougter.
Documentation 
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#![allow(unused)]

pub(crate) fn to_hex(n: u8) -> u8 {
    (n % 16) + 48 + if n >= 10 { 7 } else { 0 }
}

use std::str;
pub(crate) fn uri_decode(uri: &str) -> String {
    let mut buf: Vec<u8> = Vec::with_capacity(uri.as_bytes().len());
    let mut bytesiter = uri.as_bytes().iter();
    loop {
        if let Some(&byte) = bytesiter.next() {
            if byte == b'%' {
                let b1 = bytesiter.next();
                let b2 = bytesiter.next();

                if let (Some(&hi), Some(&lo)) = (b1, b2) {
                    if let Some(byte) = str::from_utf8(&[hi, lo]).ok().and_then(|hex| u8::from_str_radix(hex, 16).ok()) {
                        buf.push(byte);
                    }
                } else { break; }
            }
            else { buf.push(byte); }
        }
        else { break; }
    }
    String::from_utf8_lossy(&buf).to_string()
}
pub(crate) fn uri_encode(original: &str) -> String {
    let mut buf: Vec<u8> = Vec::with_capacity(original.as_bytes().len() * 3);
    for &byte in original.as_bytes() {
        if byte.is_ascii_alphanumeric() || b"-._~".contains(&byte) {
            buf.push(byte);
        }
        else {
            buf.push(b'%');
            buf.push(to_hex(byte));
            buf.push(to_hex(byte >> 4))
        }
    }
    String::from_utf8_lossy(&buf).to_string()
}