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/* $Id$ */
/***
This file is part of ivam2.
ivam2 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 2 of the License, or
(at your option) any later version.
ivam2 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 ivam2; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include "dle.h"
size_t dle_decode(const uint8_t* s, size_t ls, uint8_t* d, size_t *ld, int (*dle_func) (uint8_t c, void *user), void *user, int *dle_flag) {
size_t ns, nd;
assert(s && ls && d && ld && *ld && dle_flag);
for (ns = nd = 0; ns < ls && nd < *ld; ns++) {
if (*dle_flag) {
if (s[ns] == DLE)
d[nd++] = DLE;
else {
if (dle_func)
if (dle_func(s[ns], user) < 0) {
ns++;
break;
}
}
*dle_flag = 0;
} else {
if (s[ns] == DLE)
*dle_flag = 1;
else
d[nd++] = s[ns];
}
}
*ld = nd;
return ns;
}
size_t dle_encode(const uint8_t* s, size_t ls, uint8_t* d, size_t *ld) {
size_t ns, nd;
for (ns = nd = 0; ns < ls && nd < *ld; ns++) {
if (s[ns] == DLE) {
if (nd+1 >= *ld)
break;
d[nd++] = DLE;
}
d[nd++] = s[ns];
}
*ld = nd;
return ns;
}
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