A fork of JSZip that aligns all files in generated ZIPs to 64 bits of the start, so that they can be accessed directly with mmap

The purpose is to ensure that all uncompressed data starts with a particular alignment relative to the start of the file. This allows those portions to be accessed directly with mmap() even if they contain binary data with alignment restrictions. Some data needs to be word-aligned for easy access, others might benefit from being page-aligned. The adjustment is made by altering the size of the "extra" field in the zip Local File Header sections. Existing data in the "extra" fields may be altered by this process.

ORIGINAL README

JSZip

A library for creating, reading and editing .zip files with JavaScript, with a lovely and simple API.

See https://stuk.github.io/jszip for all the documentation.

var zip = new JSZip();

zip.file("Hello.txt", "Hello World\n");

var img = zip.folder("images");
img.file("smile.gif", imgData, {base64: true});

zip.generateAsync({type:"blob"}).then(function(content) {
    // see FileSaver.js
    saveAs(content, "example.zip");
});

/*
Results in a zip containing
Hello.txt
images/
    smile.gif
*/

License

JSZip is dual-licensed. You may use it under the MIT license or the GPLv3 license. See LICENSE.markdown.