zip

Quick and easy nodejs functions to work with zip files.

This combines "node-compress-commons" and "buffer-crc32" to provide streamlined zip/unzip functionality that does not require any external modules.

https://github.com/archiverjs/node-compress-commons

https://github.com/brianloveswords/buffer-crc32

Installation Instructions

npm install @musicslayer/zip

API

Zip.createZipFileFromFolder(zipFilePath, srcFolder, compressionLevel)

Creates a zip file containing a folder and all of its content. Compression level is an integer 0-9 refering to the zlib compression level:

0 = No compression 1 = Fastest Compression ... 9 = Maximum Compression

Unzip.extractZipFileIntoFolder(zipFilePath, destFolder)

Extracts a zip file, writing all of its contents into a specified folder.

Unzip.readZipFile(zipFilePath)

Reads data from a zip file, returning a Map of file names to each file's information and uncompressed contents. This will not extract any files.

Example Usage

Refer to example.js to see an example usage of each provided function:

const path = require("path");
const {Zip, Unzip} = require("@musicslayer/zip");

const ZIP_FILE_PATH = path.resolve(path.join(__dirname, "example_zip_files", "archive.zip"));
const ZIP_SOURCE_FOLDER = path.resolve(path.join(__dirname, "example_zip_files", "files"));
const ZIP_DEST_FOLDER = path.resolve(path.join(__dirname, "example_zip_files", "extract"));

async function init() {
    // Create Zip
    await Zip.createZipFileFromFolder(ZIP_FILE_PATH, ZIP_SOURCE_FOLDER, 9);

    // Extract zip file contents into a new folder.
    await Unzip.extractZipFileIntoFolder(ZIP_FILE_PATH, ZIP_DEST_FOLDER);

    // Read zip file contents, but do not extract any files.
    let fileDataMap = await Unzip.readZipFile(ZIP_FILE_PATH);
    console.log(fileDataMap);
}
init();