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#include "hex.h"
const char* const Char2DigitTable = ("\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\xff\xff\xff\xff\xff\xff" //0-9
"\xff\x0a\x0b\x0c\x0d\x0e\x0f\xff\xff\xff\xff\xff\xff\xff\xff\xff" //A-Z
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\x0a\x0b\x0c\x0d\x0e\x0f\xff\xff\xff\xff\xff\xff\xff\xff\xff" //a-z
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff");
char* HexEncode(const void* in, size_t len, char* out) {
const unsigned char* b = (const unsigned char*)in;
const unsigned char* e = b + len;
while (b != e) {
*out++ = DigitToChar(*b / 16);
*out++ = DigitToChar(*b++ % 16);
}
return out;
}
void* HexDecode(const void* in, size_t len, void* ptr) {
const char* b = (const char*)in;
const char* e = b + len;
Y_ENSURE(!(len & 1), TStringBuf("Odd buffer length passed to HexDecode"));
char* out = (char*)ptr;
while (b != e) {
*out++ = (char)String2Byte(b);
b += 2;
}
return out;
}
TString HexEncode(const void* in, size_t len) {
TString ret;
ret.ReserveAndResize(len << 1);
HexEncode(in, len, ret.begin());
return ret;
}
TString HexDecode(const void* in, size_t len) {
TString ret;
ret.ReserveAndResize(len >> 1);
HexDecode(in, len, ret.begin());
return ret;
}
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