(Node.js) Gzip a File

Demonstrates how to create a .gz (gzipped file).

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 gzip = new chilkat.Gzip();

    // This will create a .gz such that when ungzipped by a tool such as 7-Zip,
    // it will create "qa_data/hamlet.xml".
    var success = gzip.CompressFile("qa_data/hamlet.xml","qa_output/hamlet.xml.gz");
    if (success == false) {
        console.log(gzip.LastErrorText);
        return;
    }

    // Call CompressFile2 to explicitly specify the ungzip path
    // For example, this will create a .gz such that when ungzipped by a tool such as 7-Zip,
    // it will create "hamlet.xml".
    var embeddedExtractPath = "hamlet.xml";
    success = gzip.CompressFile2("qa_data/hamlet.xml",embeddedExtractPath,"qa_output/hamlet2.xml.gz");
    if (success == false) {
        console.log(gzip.LastErrorText);
        return;
    }

    console.log("Success.");

}

chilkatExample();