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/*
**
** Copyright (C) 1993 Swedish University Network (SUNET)
**
**
** This program is developed by UDAC, Uppsala University by commission
** of the Swedish University Network (SUNET).
**
** 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 2 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 FITTNESS 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, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
**
** Martin.Wendel@its.uu.se
** Torbjorn.Wictorin@its.uu.se
**
** ITS
** P.O. Box 887
** S-751 08 Uppsala
** Sweden
**
*/
#include "emil.h"
extern long memall;
void
safe_mchange(struct message *m, struct data *d)
{
#ifdef DEBUG
if (edebug)
fprintf(stderr, "* safe_mchange: ");
#endif
if (m == NULL || d == NULL)
{
#ifdef DEBUG
if (edebug)
fprintf(stderr, "Null input, ignoring...\n");
#endif
return;
}
m->td->type = m->sd->type;
m->td->name = m->sd->name;
m->td->nameext = m->sd->nameext;
if (d->appletype != NULL)
bcopy(d->appletype, m->td->appletype, 9);
m->td->description = m->sd->description;
if (m->td == d)
{
#ifdef DEBUG
if (edebug)
fprintf(stderr, "Pointers identical, ignoring...\n");
#endif
return;
}
if (d->contents != NULL && (memcmp(m->td->contents + m->td->bodystart,
d->contents,
m->td->bodyend - m->td->bodystart) == 0))
{
if (d->charset != NULL)
m->td->charset = NEWSTR(d->charset);
m->td->encoding = d->encoding;
#ifdef DEBUG
if (edebug)
fprintf(stderr, "Data identical, ignoring...\n");
#endif
(void)free_data(d);
return;
}
if (m->td != m->sd)
{
(void)free_data(m->td);
}
#ifdef DEBUG
if (edebug)
fprintf(stderr, "Data has been exchanged. Old size was %lu, new size is %lu\n",
m->td->bodyend - m->td->bodystart,
d->bodyend - d->bodystart);
#endif
m->td = d;
return;
}
void
free_data(struct data *d)
{
/* Get rid of contents, leave the rest */
if (d == NULL)
return;
#ifdef DEBUG
alloc_total -= d->size;
if (edebug)
{
fprintf(stderr, "* Freed %lu, new total %lu\n", d->size, alloc_total);
fflush(stderr);
}
#endif
if (d->contents != NULL)
free(d->contents);
memall -= d->size;
}
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