The function
zip_source_file
creates a zip source from a file.
zip_source_file
opens
fname
and reads
len
bytes from offset
start
from it.
If
len
is 0 or -1, the whole file (starting from
start )
is used.
RETURN VALUES
Upon successful completion, the created source is returned.
Otherwise,
NULL
is returned and the error code in
archive
is set to indicate the error.