Zippity

Library for asynchronously creating a ZIP file on the fly.

Features

• Async, using tokio.
• ZIP is created on the fly, can be directly streamed somewhere, does not need to be stored in RAM or on disk
• Supports Zip64 (files > 4GB).
• File size is known in advance
• Output is driven from outside (implements [tokio::io::AsyncRead])
• Allows seeking in the file (implements [tokio::io::AsyncSeek])
• Supports files on the filesystem as entries.
  • Supports tokio_uring
• Supports integration with Actix Web (see [Reader::into_responder()])
• Entry metadata

Non-features

These are not planned to be implemented.

• Compression: The zip only uses store method.
• Encryption
• Zip reading

Example

use std::io::SeekFrom;
use tokio::io::{AsyncSeekExt, AsyncWriteExt, copy, sink};

tokio_test::block_on(async {

// Create the builder
let mut builder = zippity::Builder::<&[u8]>::new();

// Add data
builder.add_entry("Entry name".to_owned(), b"Entry data".as_slice()).await.unwrap();

// Build the reader object
// Note that this does not touch the data yet.
let mut zippity = builder.build();

// Getting file size is in O(1)
println!("Total zip file size will be {}B", zippity.size());

// Seek to last 10B
zippity.seek(SeekFrom::End(-10)).await.unwrap();

// Write to output (in this case a sink, throwing it away)
copy(&mut zippity, &mut sink()).await.unwrap();

})

Current state

Consider this a beta version. The library is mostly finished, with lot of polish missing for version 1.0.0.

Crate features