static extern int rc_extract_packages_from_aptrpm_buffer(out byte data, int len, IntPtr packman, IntPtr channel, RCSharp.PackageDelegateNative cb, IntPtr user_data);
static extern int rc_extract_packages_from_debian_file(IntPtr filename, IntPtr channel, RCSharp.PackageDelegateNative cb, IntPtr user_data);
static extern int rc_extract_packages_from_undump_buffer(out byte data, int len, RCSharp.ChannelAndSubdFnNative channel_callback, RCSharp.PackageDelegateNative package_callback, RCSharp.PackageMatchDelegateNative lock_callback, IntPtr user_data);
static extern int rc_extract_packages_from_helix_buffer(byte[] data, int len, IntPtr channel,
RCSharp.PackageDelegateNative cb, IntPtr user_data);
static extern int rc_extract_packages_from_directory(IntPtr path, IntPtr channel, IntPtr packman, bool recursive, RCSharp.PackageDelegateNative cb, IntPtr user_data);
static extern int rc_extract_packages_from_aptrpm_file(string filename, IntPtr packman, IntPtr channel,
RCSharp.PackageDelegateNative cb, IntPtr user_data);
static extern int rc_extract_packages_from_undump_file(IntPtr filename, RCSharp.ChannelAndSubdFnNative channel_callback, RCSharp.PackageDelegateNative package_callback, RCSharp.PackageMatchDelegateNative lock_callback, IntPtr user_data);
static extern int rc_world_foreach_package_by_name(IntPtr raw, IntPtr name, IntPtr channel, RCSharp.PackageDelegateNative fn, IntPtr user_data);
static extern int rc_world_foreach_upgrade(IntPtr raw, IntPtr package, IntPtr channel, RCSharp.PackageDelegateNative fn, IntPtr user_data);
static extern int rc_world_foreach_package_by_match(IntPtr raw, IntPtr match, RCSharp.PackageDelegateNative fn, IntPtr user_data);
