NAME
pack_fseek - Seeks inside a stream. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int pack_fseek(PACKFILE *f, int offset);
DESCRIPTION
Moves the position indicator of the stream `f'. Unlike the standard
fseek() function, this only supports forward movements relative to the
current position and in read-only streams, so don't use negative
offsets. Note that seeking is very slow when reading compressed files,
and so should be avoided unless you are sure that the file is not
compressed. Example:
input_file = pack_fopen("data.bin", "r");
if (!input_file)
abort_on_error("Couldn't open binary data!");
/* Skip some useless header before reading data. */
pack_fseek(input_file, 32);
RETURN VALUE
Returns zero on success or a negative number on error, storing the
error code in `errno'.
SEE ALSO
pack_fopen(3alleg), pack_fopen_chunk(3alleg), expackf(3alleg)