Provided by: libzip-dev_1.0.1-0ubuntu1_amd64
zip_set_file_compression - set compression method for file in zip
zip.h int zip_set_file_compression zip_t *archive zip_uint64_t index zip_int32_t comp zip_uint32_t comp_flags
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).
Upon successful completion 0 is returned. Otherwise, -1 is returned and the error information in archive is set to indicate the error.
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.
Dieter Baron <email@example.com> and Thomas Klausner <firstname.lastname@example.org>