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#ifndef SRC_BASE64_H_ |
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#define SRC_BASE64_H_ |
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#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS |
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#include "util.h" |
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#include <cmath> |
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#include <cstddef> |
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#include <cstdint> |
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namespace node { |
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//// Base 64 //// |
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enum class Base64Mode { |
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NORMAL, |
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URL |
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}; |
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static constexpr char base64_table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
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"abcdefghijklmnopqrstuvwxyz" |
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"0123456789+/"; |
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static constexpr char base64_table_url[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
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"abcdefghijklmnopqrstuvwxyz" |
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"0123456789-_"; |
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static inline const char* base64_select_table(Base64Mode mode) { |
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✓✓✗ |
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switch (mode) { |
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case Base64Mode::NORMAL: return base64_table; |
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case Base64Mode::URL: return base64_table_url; |
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default: UNREACHABLE(); |
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} |
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} |
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static inline constexpr size_t base64_encoded_size( |
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size_t size, |
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Base64Mode mode = Base64Mode::NORMAL) { |
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✓✓ |
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return mode == Base64Mode::NORMAL ? ((size + 2) / 3 * 4) |
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: static_cast<size_t>(std::ceil( |
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static_cast<double>(size * 4) / 3)); |
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} |
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// Doesn't check for padding at the end. Can be 1-2 bytes over. |
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static inline constexpr size_t base64_decoded_size_fast(size_t size) { |
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// 1-byte input cannot be decoded |
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✓✗ |
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return size > 1 ? (size / 4) * 3 + (size % 4 + 1) / 2 : 0; |
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} |
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inline uint32_t ReadUint32BE(const unsigned char* p); |
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template <typename TypeName> |
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size_t base64_decoded_size(const TypeName* src, size_t size); |
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template <typename TypeName> |
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size_t base64_decode(char* const dst, const size_t dstlen, |
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const TypeName* const src, const size_t srclen); |
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inline size_t base64_encode(const char* src, |
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size_t slen, |
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char* dst, |
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size_t dlen, |
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Base64Mode mode = Base64Mode::NORMAL); |
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} // namespace node |
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#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS |
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#endif // SRC_BASE64_H_ |