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/*
* Copyright (C) 2021 Ant Group. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "utils.h"
static const char hexchars[] = "0123456789abcdef";
int32
hex(char ch)
{
if ((ch >= 'a') && (ch <= 'f'))
return (ch - 'a' + 10);
if ((ch >= '0') && (ch <= '9'))
return (ch - '0');
if ((ch >= 'A') && (ch <= 'F'))
return (ch - 'A' + 10);
return (-1);
}
char *
mem2hex(char *mem, char *buf, int32 count)
{
uint8 ch;
for (int i = 0; i < count; i++) {
ch = *(mem++);
*buf++ = hexchars[ch >> 4];
*buf++ = hexchars[ch % 16];
}
*buf = 0;
return (buf);
}
char *
hex2mem(char *buf, char *mem, int32 count)
{
uint8 ch;
for (int i = 0; i < count; i++) {
ch = hex(*buf++) << 4;
ch = ch + hex(*buf++);
*(mem++) = ch;
}
return (mem);
}
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