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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 <signal.h>
#include <stdlib.h>
#include "emil.h"
#define MAXSZ 16*1024 /* Maximum amount to allocate */
#define MULTF 2 /* Increase factor */
#ifdef SIGDANGER
extern int psdanger(int);
#endif
long memall = 0;
extern int in_fd;
static void * Zalloc(void * old, off_t prevsize, off_t newsize)
{
/* Allocate memory */
void * Z;
memall = memall + newsize - prevsize;
#ifdef DEBUG
alloc_total += newsize - prevsize;
if (edebug)
{
fprintf(stderr, "* Allocated %lu, new total: %lu\n", newsize - prevsize, alloc_total);
fflush(stderr);
}
#endif
if (old == NULL)
{
assert (prevsize == 0);
Z = malloc((size_t)newsize);
}
else {
assert (prevsize != 0);
assert (prevsize < newsize);
Z = realloc(old,(size_t)newsize);
}
if (Z == NULL) {
logger(LOG_ERR,"load_data cannot allocate memory");
closelog();
fprintf(stderr, "Emil: load_data: cannot allocate memory (using %lu bytes)\n", memall);
fflush(stderr);
exit(EX_OSERR);
}
memset(((char *) Z) + prevsize, 0, newsize - prevsize);
return Z;
}
struct data *
load_data()
{
struct data *out;
long chunk;
#ifdef SIGDANGER
long border;
#endif
char * tmp;
int l;
int left;
#ifdef DEBUG
if (edebug)
fprintf(stderr, "* Load data\n");
#endif
/* Allocate an output struct */
out = (struct data *) Yalloc(sizeof(struct data));
/* And an initial output buffer */
chunk = pz;
left = chunk;
out->contents = (char *) Zalloc(NULL,0,chunk);
out->size = chunk;
/* Read all on standard input and reallocate buffer if required */
while ((l=read(in_fd, (out->contents + out->end), chunk - 1)) > 0) {
out->end += l;
left -= l;
if (left < chunk)
{
chunk *= MULTF;
if (chunk > MAXSZ) chunk = MAXSZ;
#ifdef SIGDANGER
border = (psdanger(SIGDANGER) * pz) / 2;
if (chunk > border) chunk = border;
#endif
#ifdef DEBUG
if (edebug)
fprintf(stderr, "read %d characters\n", l);
if (edebug)
fprintf(stderr,"load_data: realloc %lud to %lud\n",
out->size,chunk + out->size);
#endif
out->contents =
(char *)Zalloc(out->contents,out->size,out->size+chunk);
out->size += chunk;
left += chunk;
}
}
out->contents[out->end] = 0;
/* Count number of lines */
for ( tmp = out->contents, out->lend = 0;
(tmp= index(tmp,'\n')) != NULL;
tmp++) out->lend++;
return(out);
}
int
append_data(struct data *d, char *c, int len, int busize)
{
if (d->size == 0)
{
if ((d->contents = Zalloc(NULL, 0, busize)) == NULL)
return(NOK);
d->size = busize;
}
while ((len + d->end + 2) > d->size) /* TW 941220 */
{
if ((d->contents = Zalloc(d->contents,d->size,d->size+busize)) == NULL)
return(NOK);
d->size += busize;
}
/* bcopy(c, (d->contents + d->end), len); */
memcpy((d->contents + d->end), c, (off_t) len);
d->end += len;
d->bodyend += len;
*(d->contents + d->end) = '\0';
return(OK);
}
int
append_char(struct data *d, char c, int busize)
{
if (d->size == 0)
{
if ((d->contents = Zalloc(NULL, 0, busize)) == NULL)
return(NOK);
d->size = busize;
}
while ((3 + d->end) > d->size)
{
if ((d->contents = Zalloc(d->contents,d->size,d->size+busize)) == NULL)
return(NOK);
d->size += busize;
}
*(d->contents + d->end) = c;
d->end += 1;
d->bodyend += 1;
*(d->contents + d->end) = '\0';
return(OK);
}
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