// =============================================================================
// Std::Crypto::Base64 — Base64 and Base64URL encode/decode
// =============================================================================
module Std::Crypto::Base64 {

import Std::String::{String_Len};

extern func bux_base64_encode(data: String, len: int) -> String;
extern func bux_base64_decode(data: String, len: int, outlen: *int) -> String;
extern func bux_base64url_encode(data: String, len: int) -> String;
extern func bux_base64url_decode(data: String, len: int, outlen: *int) -> String;

// --- Standard Base64 ---

func Base64_Encode(s: String) -> String {
    return bux_base64_encode(s, String_Len(s) as int);
}

func Base64_Decode(s: String) -> String {
    let outlen: int = 0;
    return bux_base64_decode(s, String_Len(s) as int, &outlen);
}

// --- Base64URL (RFC 4648 §5, uses - and _ instead of + and /, no padding) ---

func Base64URL_Encode(s: String) -> String {
    return bux_base64url_encode(s, String_Len(s) as int);
}

func Base64URL_Decode(s: String) -> String {
    let outlen: int = 0;
    return bux_base64url_decode(s, String_Len(s) as int, &outlen);
}
}