ifxnjs-aa64/installer/IfxDriverInstall.js

Informix native node.js driver

// Copyright (c) 2017 Sathyanesh Krishnan <msatyan@gmail.com>
// Copyright (c) 2017 Javier Sagrera


var fs = require('fs');
//var url = require('url');
var os = require('os');
var platform = os.platform();
var arch = os.arch();

var path = require('path');

//var installerURL = 'http://public.dhe.ibm.com/ibmdl/export/pub/software/data/db2/drivers/odbc_cli/';
var CURRENT_DIR = process.cwd();

function IfxNodeJsInstall() {
    // Check prebuilt binaries available, if so install it with that
    var PreBuiltFound = UnZipPreBuilts();
    if (PreBuiltFound == true) {
        return (true);
    }

    //Pre-built binaries are not available for this platform. 
    if (PreBuiltFound == false) {
        console.log('No prebuilt binaries available for platform=' +
            platform + 'with architecture=' + arch);
        console.log('You may try local build steps to build the driver on this platform');
        console.log('For building the driver from its source you may run ');
        console.log('node installer/IfxDriverBuild.js');
        //return(false);
        process.exit(1);
    }

    function UnZipPreBuilts() {
        var PlatformDir = undefined;

        if (platform == 'win32') {
            if (arch == 'x64') {
                PlatformDir = 'Win64';
            }
        }
        if (platform == 'linux') {
            if (arch == 'x64') {
                PlatformDir = 'Linux64';
            } else if (arch == 'arm') {
                PlatformDir = 'Arm';
            } else {
                PlatformDir = 'Linux64';
            }
        }

        if (PlatformDir == undefined) {
            return (false);
        }

        var fstream = require('fstream');
        var unzip = require('unzip');

        // var BUILD_FILE = path.resolve(CURRENT_DIR, 'bin/' + build_file);
        var BUILD_FILE = path.resolve(CURRENT_DIR,
            'prebuilt/' + PlatformDir + '/' + 'build.zip');

        var readStream = fs.createReadStream(BUILD_FILE);
        var writeStream = fstream.Writer(CURRENT_DIR);

        readStream.pipe(unzip.Parse())
            .pipe(writeStream)
            .on("unpipe", function () {
                RemoveBuildArchive();
            });

        return (true);
    }

    function RemoveBuildArchive() {
        // Set to false if we decided to remomve pre-built
        var DoNotRemoveBuildArchive = true;
        if (DoNotRemoveBuildArchive == true) {
            // Let us not remove build archive
            return;
        }

        var PathBinDir = path.resolve(CURRENT_DIR, 'prebuilt');
        fs.exists(PathBinDir, function (exists) {
            if (exists) {
                RmDir(PathBinDir);
            }
        });
    }

    function RmDir(dir) {
        var list = fs.readdirSync(dir);

        for (var i = 0; i < list.length; i++) {
            var filename = path.join(dir, list[i]);
            var stat = fs.statSync(filename);

            if (filename == "." || filename == "..") {
                // pass these files
            }
            else if (stat.isDirectory()) {
                // RmDir recursively
                RmDir(filename);
            }
            else {
                // rm fiilename
                fs.unlinkSync(filename);
            }
        }
        fs.rmdirSync(dir);
    };

};

IfxNodeJsInstall();