static off_t
zf_seek(struct open_file *f, off_t offset, int where)
{
struct z_file *zf = (struct z_file *)f->f_fsdata;
off_t target;
char discard[16];
switch (where) {
case SEEK_SET:
target = offset;
break;
case SEEK_CUR:
target = offset + zf->zf_zstream.total_out;
break;
default:
target = -1;
}
/* Can we get there from here? */
if (target < zf->zf_zstream.total_out) {
errno = EOFFSET;
return -1;
}
/* skip forwards if required */
while (target > zf->zf_zstream.total_out) {
if (zf_read(f, discard, min(sizeof(discard), target - zf->zf_zstream.total_out), NULL) == -1)
return(-1);
}
/* This is where we are (be honest if we overshot) */
return (zf->zf_zstream.total_out);
}
static off_t
zf_seek(struct open_file *f, off_t offset, int where)
{
struct z_file *zf = (struct z_file *)f->f_fsdata;
off_t target;
char discard[16];
switch (where) {
case SEEK_SET:
target = offset;
break;
case SEEK_CUR:
target = offset + zf->zf_zstream.total_out;
break;
case SEEK_END:
target = -1;
default:
errno = EINVAL;
return(-1);
}
/* rewind if required */
if (target < zf->zf_zstream.total_out && zf_rewind(f) != 0)
return(-1);
/* skip forwards if required */
while (target > zf->zf_zstream.total_out) {
errno = zf_read(f, discard, min(sizeof(discard),
target - zf->zf_zstream.total_out), NULL);
if (errno)
return(-1);
}
/* This is where we are (be honest if we overshot) */
return(zf->zf_zstream.total_out);
}
int
main(int argc, char *argv[])
{
#if 0
int i;
#endif
struct zip *za, *destza;
#if 0
#define BUFSIZE 65536
struct zip_file *zf1, *zf2;
char buf1[BUFSIZE], buf2[BUFSIZE];
#endif
#if 0
if (argc != 2) {
fprintf(stderr, "%s: call with one option: the zip-file to destroy"
"^H^H^H^H^H^H^Htest\n", argv[0]);
return 1;
}
#endif
if (argc != 3) {
fprintf(stderr, "%s: call with two options: src dest\n", argv[0]);
return 1;
}
if ((za=zip_open(argv[1], ZIP_CHECKCONS))==NULL) {
fprintf(stderr, "%s: %s: can't open file: %s\n", argv[0], argv[1],
zip_err_str[zip_err]);
return 1;
}
if ((destza=zip_open(argv[2], ZIP_CREATE))==NULL) {
fprintf(stderr, "%s: %s: can't open file: %s\n", argv[0], argv[2],
zip_err_str[zip_err]);
return 1;
}
#if 0
for (i=0; i<za->nentry; i++) {
printf("%8d %s\n", za->entry[i].uncomp_size, za->entry[i].fn);
zip_add_zip(destza, za->entry[i].fn, za, i, 0, 0);
}
#endif
if (zip_add_zip(destza, NULL, NULL, za, 0, 0, 0) == -1)
fprintf(stderr, "%s: %s: can't add file to zip '%s': %s\n", argv[0],
za->entry[0].fn, argv[1], zip_err_str[zip_err]);
#if 0
zf1= zf_open_index(za, 1);
if (!zf1) {
fprintf(stderr, "boese, boese\n");
exit(100);
}
i = zf_read(zf1, buf1, 100);
if (i < 0)
fprintf(stderr, "read error: %s\n", zip_err_str[zf1->flags]);
else {
buf1[i] = 0;
printf("read %d bytes: '%s'\n", i, buf1);
}
zf2 = zf_open_index(za, 1);
i = zf_read(zf2, buf2, 200);
if (i < 0)
fprintf(stderr, "read error: %s\n", zip_err_str[zf2->flags]);
else {
buf2[i] = 0;
printf("read %d bytes: '%s'\n", i, buf2);
}
i = zf_read(zf1, buf1, 100);
if (i < 0)
fprintf(stderr, "read error: %s\n", zip_err_str[zf1->flags]);
else {
buf1[i] = 0;
printf("read %d bytes: '%s'\n", i, buf1);
}
zf_close(zf1);
zf_close(zf2);
#endif
if (zip_close(destza)!=0) {
fprintf(stderr, "%s: %s: can't close file: %s\n", argv[0], argv[2],
zip_err_str[zip_err]);
return 1;
}
if (zip_close(za)!=0) {
fprintf(stderr, "%s: %s: can't close file: %s\n", argv[0], argv[1],
zip_err_str[zip_err]);
return 1;
}
return 0;
}
