NAME¶
zip_set_file_compression - set compression method for file in zip
LIBRARY¶
libzip (-lzip)
SYNOPSIS¶
#include <zip.h>
int
zip_set_file_compression(
struct zip
*archive,
zip_uint64_t index,
zip_int32_t
comp,
zip_uint32_t comp_flags);
DESCRIPTION¶
The
zip_set_file_compression() function sets the compression method for
the file at position
index in the zip archive to
comp with the
compression method specific
comp_flags. The
comp is the same as
returned by
zip_stat(3). For the
comp argument, currently only the
following values are supported:
- ZIP_CM_DEFAULT
- default compression; currently the same as ZIP_CM_DEFLATE.
- ZIP_CM_STORE
- Store the file uncompressed.
- ZIP_CM_DEFLATE
- Deflate the file with the zlib(3) algorithm and default options
The
comp_flags argument is currently ignored.
The current compression method for a file in a zip archive can be determined
using
zip_stat(3).
RETURN VALUES¶
Upon successful completion 0 is returned. Otherwise, -1 is returned and the
error information in
archive is set to indicate the error.
ERRORS¶
zip_set_file_compression() fails if:
- [ZIP_ER_INVAL]
- index is not a valid file index in archive, or the argument
combination is invalid.
- [ZIP_ER_COMPNOTSUPP]
- Unsupported compression method requested.
- [ZIP_ER_RDONLY]
- Read-only zip file, no changes allowed.
SEE ALSO¶
libzip(3),
zip_stat(3)
AUTHORS¶
Dieter Baron <
dillo@nih.at> and Thomas Klausner <
tk@giga.or.at>
