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