NAME

       zip_set_file_compression - set compression method for file in zip

LIBRARY

       libzip (-lzip)

SYNOPSIS

       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>