ZIP_SET_FILE_COMPRESSION(3)ZIP_SET_FILE_COMPRESSION(3)NAMEzip_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 compres‐
sion method specific comp_flags. The comp is the same as returned by
zip_stat(3). For the comp argument, currently only the following val‐
ues 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.
ERRORSzip_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 ALSOlibzip(3), zip_stat(3)AUTHORS
Dieter Baron <dillo@nih.at> and Thomas Klausner <tk@giga.or.at>
NiH May 1, 2012 ZIP_SET_FILE_COMPRESSION(3)
