(Node.js) Convert a Text File from utf-8 to Windows-1252

Convert a text file from one character encoding to another.

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() {

    // It's really simple:  Just load from one charset, save using another.

    var sb = new chilkat.StringBuilder();

    // In this case, my test file has some norwegian chars in the utf-8 encoding
    var success = sb.LoadFile("qa_data/txt/norwegian_chars.txt","utf-8");

    // We could just as well write over the file we just read in.
    // (But I don't want to do that for my example..)
    success = sb.WriteFile("qa_output/norwegian_chars.txt","windows-1252",false);

    // Note:  Windows-1252 is a 1-byte per char encoding, which means it's only capable of representing
    // those chars in Western European languages.   See https://en.wikipedia.org/wiki/Windows-1252
    // 
    // utf-8 is an encoding that can handle chars in any language, including Chinese, Korean, Japanese, Arabic, Hebrew, Greek, etc.
    // If a text file contains chars in these other languages, obviously it cannot be converted to windows-1252 because
    // there are only 256 chars that can possibly be represented in a 1-byte per char encoding.

}

chilkatExample();