63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
/*
|
|
* This file is part of the Black Magic Debug project.
|
|
*
|
|
* Copyright (C) 2011 Black Sphere Technologies Ltd.
|
|
* Written by Gareth McMullin <gareth@blacksphere.co.nz>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/* Convenience function to convert to/from ascii strings of hex digits.
|
|
*/
|
|
|
|
#include "general.h"
|
|
#include "hex_utils.h"
|
|
|
|
static const char hexdigits[] = "0123456789abcdef";
|
|
|
|
char * hexify(char *hex, const void *buf, size_t size)
|
|
{
|
|
char *tmp = hex;
|
|
const uint8_t *b = buf;
|
|
|
|
while (size--) {
|
|
*tmp++ = hexdigits[*b >> 4];
|
|
*tmp++ = hexdigits[*b++ & 0xF];
|
|
}
|
|
*tmp++ = 0;
|
|
|
|
return hex;
|
|
}
|
|
|
|
static uint8_t unhex_digit(char hex)
|
|
{
|
|
uint8_t tmp = hex - '0';
|
|
if(tmp > 9)
|
|
tmp -= 'A' - '0' - 10;
|
|
if(tmp > 16)
|
|
tmp -= 'a' - 'A';
|
|
return tmp;
|
|
}
|
|
|
|
char * unhexify(void *buf, const char *hex, size_t size)
|
|
{
|
|
uint8_t *b = buf;
|
|
while (size--) {
|
|
*b = unhex_digit(*hex++) << 4;
|
|
*b++ |= unhex_digit(*hex++);
|
|
}
|
|
return buf;
|
|
}
|
|
|