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#include "loader_common.h"
#include <bzlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <assert.h>
#define OUTBUF_SIZE 16384
#define INBUF_SIZE 1024
static int uncompress_file (FILE *fp, int dest)
{
BZFILE *bf;
DATA8 outbuf[OUTBUF_SIZE];
int bytes, error, ret = 1;
bf = BZ2_bzReadOpen (&error, fp, 0, 0, NULL, 0);
if (error != BZ_OK) {
BZ2_bzReadClose (NULL, bf);
return 0;
}
while (1) {
bytes = BZ2_bzRead (&error, bf, &outbuf, OUTBUF_SIZE);
if (error == BZ_OK || error == BZ_STREAM_END)
write (dest, outbuf, bytes);
if (error == BZ_STREAM_END)
break;
else if (error != BZ_OK) {
ret = 0;
break;
}
}
BZ2_bzReadClose (&error, bf);
return ret;
}
char load (ImlibImage *im, ImlibProgressFunction progress,
char progress_granularity, char immediate_load)
{
ImlibLoader *loader;
FILE *fp;
int dest, res;
char *file, tmp[] = "/tmp/imlib2_loader_bz2-XXXXXX", *p;
char real_ext[16];
assert (im);
/* make sure this file ends in ".bz2" and that there's another ext
* (e.g. "foo.png.bz2"
*/
p = strrchr(im->real_file, '.');
if (p && p != im->real_file) {
if (strcasecmp(p + 1, "bz2"))
return 0;
} else
return 0;
strncpy (real_ext, p - sizeof (real_ext) + 1, sizeof (real_ext));
real_ext[sizeof (real_ext) - 1] = '\0';
/* abort if there's no dot in the "real" filename */
if (!strrchr (real_ext, '.'))
return 0;
if (!(fp = fopen (im->real_file, "rb"))) {
return 0;
}
if ((dest = mkstemp (tmp)) < 0) {
fclose (fp);
return 0;
}
res = uncompress_file (fp, dest);
fclose (fp);
close (dest);
if (!res) {
unlink (tmp);
return 0;
}
if (!(loader = __imlib_FindBestLoaderForFile (real_ext, 0))) {
unlink (tmp);
return 0;
}
/* remember the original filename */
file = strdup (im->real_file);
free (im->real_file);
im->real_file = strdup (tmp);
loader->load (im, progress, progress_granularity, immediate_load);
free (im->real_file);
im->real_file = file;
unlink (tmp);
return 1;
}
void formats (ImlibLoader *l)
{
/* this is the only bit you have to change... */
char *list_formats[] = {"bz2"};
int i;
/* don't bother changing any of this - it just reads this in
* and sets the struct values and makes copies
*/
l->num_formats = sizeof (list_formats) / sizeof (char *);
l->formats = malloc (sizeof (char *) * l->num_formats);
for (i = 0; i < l->num_formats; i++)
l->formats[i] = strdup (list_formats[i]);
}
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