Pesudo-code for iPXE URI parser

gistfile1.txt

cleanup(url)
split_url(url)
cleanup_decoded_url(decoded_url)

cleanup(url) {
    # percent_encode all chars <= 0x20
    # percent_encode all chars >= 128
}

split_url(url) {
    # everything up to ':' in .scheme
    # skip '://'
    # everything up to '/' in .server
    # everything up to '?' in .path
    # skip '?'
    # everything up to '#' in .query
    # skip '#'
    # everything else in .frag
}

cleanup_decoded_url(url) {
    # percent_decode .scheme
    # percent_decode .server
    # strip control chars in .scheme
    # strip control chars in .server
    # lowercase .scheme
    # lowercase .server
    if ( .scheme not match '^http' ) {
        # percent_decode .path
        # remove control chars in .path
    }
}

uristring.format {
    # loop through bytes in string
    # if not ALPHA / DIGIT / "-" / "." / "_" / "~"
    #   percent_encode byte
}