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50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
#include "coding/hex.hpp"
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#include "base/assert.hpp"
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namespace impl
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{
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static const char kToHexTable[] = "0123456789ABCDEF";
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void ToHexRaw(void const * src, size_t size, void * dst)
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{
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uint8_t const * ptr = static_cast<uint8_t const *>(src);
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uint8_t const * end = ptr + size;
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uint8_t * out = static_cast<uint8_t*>(dst);
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while (ptr != end)
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{
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*out++ = kToHexTable[(*ptr) >> 4];
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*out++ = kToHexTable[(*ptr) & 0xF];
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++ptr;
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}
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}
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uint8_t HexDigitToRaw(uint8_t const digit)
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{
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if (digit >= '0' && digit <= '9')
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return (digit - '0');
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else if (digit >= 'A' && digit <= 'F')
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return (digit - 'A' + 10);
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else if (digit >= 'a' && digit <= 'f')
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return (digit - 'a' + 10);
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ASSERT(false, (digit));
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return 0;
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}
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void FromHexRaw(void const * src, size_t size, void * dst)
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{
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uint8_t const * ptr = static_cast<uint8_t const *>(src);
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uint8_t const * end = ptr + size;
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uint8_t * out = static_cast<uint8_t*>(dst);
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while (ptr < end)
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{
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*out = HexDigitToRaw(*ptr++) << 4;
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*out |= HexDigitToRaw(*ptr++);
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++out;
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}
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}
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}
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