This is wrapper around the C bzip2 implementation, making it easier to use from zig.

Call these two functions:

fn compress(allocator: std.mem.Allocator, reader: *std.Io.Reader, writer: *std.Io.Writer, options: Bzip2StreamCompressor.Options) !usize;
fn decompress(allocator: std.mem.Allocator, reader: *std.Io.Reader, writer: *std.Io.Writer, options: Bzip2StreamDecompressor.Options) !usize;

They will take data from the reader and write it to the writer after compressing/decompressing.

For a more advanced usage (I'm not sure that would be ever required), see src/compressor.zig and src/decompressor.zig code documentation.