66 lines
2.4 KiB
C++
66 lines
2.4 KiB
C++
#pragma once
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#include <cstdint>
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#include <span>
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#include <string>
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#include <vector>
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namespace base64
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{
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extern const char digits[65];
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extern const uint8_t map[256];
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/**
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* @return checks what contains only alphabet chars and ends with no more than two '=' chars
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*/
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bool isValid(const char *str, size_t str_size) noexcept;
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/**
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* @param str string or string_view which you want to decode
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* @return checks what contains only alphabet chars and ends with no more than two '=' chars
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*/
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bool isValid(std::string_view str) noexcept;
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/**
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* @param data vector or span of data which you want to encode
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* @return exact size after encoding
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* @throw basen::Exception(OVERFLOW) if there is an overflow
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*/
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size_t sizeEncoded(std::span<const uint8_t> data);
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/**
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* @param str string or string_view which you want to decode
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* @return exact size after decoding
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*/
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size_t sizeDecoded(std::string_view str) noexcept;
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/**
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* @param data [in] pointer to data which you want encode
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* @param str [out] pointer to string for encoded data output
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* @throw basen::Exception(OVERFLOW) from base64::sizeEncoded
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* @throw basen::Exception(LENGTH) if not enough allocated length
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*/
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void encode(const uint8_t *data, size_t data_size, char *str, size_t str_size);
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/**
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* @param data vector or span of data which you want to encode
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* @return encoded string
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* @throw basen::Exception(OVERFLOW) from base64::sizeEncoded
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* @throw basen::Exception(LENGTH) if not enough allocated length
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*/
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std::string encode(std::span<const uint8_t> data);
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/**
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* @param str [in] pointer to string which you want decode
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* @param data [out] pointer to data for encoded string output
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* @throw basen::Exception(LENGTH) if not enough allocated length
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* @throw basen::Exception(OUT_OF_ALPH) if out of digits map
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* @throw basen::Exception(PADDING) if incorrect padding
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*/
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void decode(const char *str, size_t str_size, uint8_t *data, size_t data_size);
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/**
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* @param str string or string_view which you want to decode
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* @return decoded data
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* @throw basen::Exception(LENGTH) if not enough allocated length
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* @throw basen::Exception(OUT_OF_ALPH) if out of digits map
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* @throw basen::Exception(PADDING) if incorrect padding
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*/
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std::vector<uint8_t> decode(std::string_view str);
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} |