Description
int
gzseek ( resource zp, int offset)
Sets the file position indicator for the file referenced by zp to
offset bytes into the file stream. Equivalent to calling (in C)
gzseek(zp, offset, SEEK_SET).
If the file is opened for reading, this function is emulated but
can be extremely slow. If the file is opened for writing, only
forward seeks are supported; gzseek then compresses a sequence of
zeroes up to the new starting position.
Upon success, returns 0; otherwise, returns -1. Note that seeking
past EOF is not considered an error.
See also gztell() and
gzrewind().
