NAME

       zip_set_file_compression - set compression method for file in zip

LIBRARY

       libzip (-lzip)

SYNOPSIS

       #include <zip.h>

       int
       zip_set_file_compression(zip_t *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>