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/* This file is part of the Project Athena Zephyr Notification System.
* It contains source for the ZMakeAscii function.
*
* Created by: Robert French
*
* $Id: ZMakeAscii.c 2123 2008-01-20 19:40:42Z kcr $
*
* Copyright (c) 1987 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include <internal.h>
#include <assert.h>
#ifndef lint
static const char rcsid_ZMakeAscii_c[] = "$Id: ZMakeAscii.c 2123 2008-01-20 19:40:42Z kcr $";
#endif
static char *itox_chars = "0123456789ABCDEF";
Code_t
ZMakeAscii(register char *ptr,
int len,
unsigned char *field,
int num)
{
int i;
for (i=0;i<num;i++) {
/* we need to add "0x" if we are between 4 byte pieces */
if ((i & 3) == 0) {
if (len < (i?4:3))
return ZERR_FIELDLEN;
/* except at the beginning, put a space in before the "0x" */
if (i) {
*ptr++ = ' ';
len--;
}
*ptr++ = '0';
*ptr++ = 'x';
len -= 2;
}
if (len < 3)
return ZERR_FIELDLEN;
*ptr++ = itox_chars[(int) (field[i] >> 4)];
*ptr++ = itox_chars[(int) (field[i] & 0xf)];
len -= 2;
}
*ptr = '\0';
return ZERR_NONE;
}
Code_t
ZMakeAscii32(register char *ptr,
int len,
unsigned long value)
{
if (len < 11)
return ZERR_FIELDLEN;
*ptr++ = '0';
*ptr++ = 'x';
*ptr++ = itox_chars[(value >> 28) & 0xf];
*ptr++ = itox_chars[(value >> 24) & 0xf];
*ptr++ = itox_chars[(value >> 20) & 0xf];
*ptr++ = itox_chars[(value >> 16) & 0xf];
*ptr++ = itox_chars[(value >> 12) & 0xf];
*ptr++ = itox_chars[(value >> 8) & 0xf];
*ptr++ = itox_chars[(value >> 4) & 0xf];
*ptr++ = itox_chars[(value >> 0) & 0xf];
*ptr = 0;
return ZERR_NONE;
}
Code_t
ZMakeAscii16(register char *ptr,
int len,
unsigned int value)
{
if (len < 7)
return ZERR_FIELDLEN;
*ptr++ = '0';
*ptr++ = 'x';
*ptr++ = itox_chars[(value >> 12) & 0xf];
*ptr++ = itox_chars[(value >> 8) & 0xf];
*ptr++ = itox_chars[(value >> 4) & 0xf];
*ptr++ = itox_chars[(value >> 0) & 0xf];
*ptr = 0;
return ZERR_NONE;
}
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