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/* This file is part of the Project Athena Zephyr Notification System.
* It contains source for the ZReadZcode function.
*
* Created by: Jeffrey Hutzelman
*
* $Id$
*
* Copyright (c) 1987, 1990, 2002 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#ifndef lint
static char rcsid_ZReadZcode_c[] = "$Id$";
#endif /* lint */
#include <internal.h>
#include <assert.h>
#if 0
Code_t
ZReadAsciiOrZcode(char *buf, int buflen, unsigned char *data, int datalen)
{
if (buf[0] == 'Z')
return ZReadZcode(buf, buflen, data, datalen);
else
return ZReadAscii(buf, buflen, data, datalen);
}
Code_t ZReadZcode32(ptr, value_ptr)
unsigned char *ptr;
unsigned long *value_ptr;
{
abort();
}
#endif
Code_t ZReadZcode(ptr, field, max, len)
unsigned char *ptr;
unsigned char *field;
int max;
int *len;
{
int n = 0;
if (*ptr++ != 'Z')
return ZERR_BADFIELD;
while (*ptr && n < max) {
if (*ptr == 0xff) {
ptr++;
switch (*ptr++) {
case 0xf0: field[n++] = 0x00; continue;
case 0xf1: field[n++] = 0xff; continue;
default: return ZERR_BADFIELD;
}
} else {
field[n++] = *ptr++;
}
}
if (*ptr)
return (ZERR_BADFIELD);
*len = n;
return (ZERR_NONE);
}
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