45 lines
921 B
C++
45 lines
921 B
C++
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/**
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* @file mybase64.hpp
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* @author Eric Mertens (emertens@gmail.com)
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* @brief Base64 encoding and decoding
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*
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*/
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#pragma once
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#include <cstddef>
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#include <string_view>
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namespace mybase64
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{
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inline constexpr auto encoded_size(std::size_t len) -> std::size_t
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{
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return (len + 2) / 3 * 4;
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}
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inline constexpr auto decoded_size(std::size_t len) -> std::size_t
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{
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return (len + 3) / 4 * 3;
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}
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/**
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* @brief Encode a string into base64
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*
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* @param input input text
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* @param output Target buffer for encoded value
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*/
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auto encode(std::string_view input, char* output) -> void;
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/**
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* @brief Decode a base64 encoded string
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*
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* @param input Base64 input text
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* @param output Target buffer for decoded value
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* @param outlen Output parameter for decoded length
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* @return true success
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* @return false failure
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*/
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auto decode(std::string_view input, char* output, std::size_t* outlen) -> bool;
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} // namespace
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