(Node.js) Remove a File from a .zip

Demonstrates how to remove a file from a .zip.

Note: This example requires Chilkat v11.0.0 or greater.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    var success = false;

    // This requires the Chilkat Zip API to have been previously unlocked.
    // See Unlock Chilkat Zip for sample code.

    // First prepare a .zip and write it..
    var zip = new chilkat.Zip();

    zip.NewZip("qa_output/abc.zip");

    // Add some files..
    var charset = "utf-8";
    zip.AddString("a.txt","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",charset);
    zip.AddString("b.txt","bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",charset);
    zip.AddString("c.txt","cccccccccccccccccccccccccccccccccccc",charset);

    // Write to qa_output/abc.zip
    // This .zip contains three files: a.txt, b.txt, and c.txt
    success = zip.WriteZipAndClose();

    // -------------------------------------------------------------------
    // Open abc.zip, remove an entry, and re-write.
    var zip2 = new chilkat.Zip();
    zip2.OpenZip("qa_output/abc.zip");

    var entry = new chilkat.ZipEntry();
    success = zip2.EntryOf("b.txt",entry);
    if (success !== false) {
        zip2.DeleteEntry(entry);
    }

    // Write the modified .zip back to "abc.zip"
    success = zip2.WriteZip();

    // To write to a different filename, change the FileName..
    zip2.FileName = "qa_output/ac.zip";
    success = zip2.WriteZipAndClose();

    console.log("success.");

}

chilkatExample();