(Node.js) Unzip Encrypted Text into a String Variable

Demonstrates how to open an encrypted .zip archive and unzip a text file directly into a string variable.

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

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    var zip = new chilkat.Zip();

    // Set the password required for decrypting.
    zip.DecryptPassword = "myPassword";

    var success = zip.OpenZip("encrypted.zip");
    if (success !== true) {
        console.log(zip.LastErrorText);
        return;
    }

    // Locate the file within the Zip to be unzipped into a string variable:
    // entry: ZipEntry
    var entry = zip.FirstMatchingEntry("*.csv");
    if (zip.LastMethodSuccess == false) {
        console.log("No matching entry found.");
        return;
    }

    // lineEndingBehavior:
    // 0 = leave unchanged.
    // 1 = convert all to bare LF's
    // 2 = convert all to CRLF's
    var lineEndingBehavior = 0;
    var srcCharset = "utf-8";

    var strCsv = entry.UnzipToString(lineEndingBehavior,srcCharset);
    console.log(strCsv);


}

chilkatExample();