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ZIP_SET_FILE_COMPRESSION(3)                           Library Functions Manual


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>

NiH                               May 1, 2012      ZIP_SET_FILE_COMPRESSION(3)

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