(Node.js) Implement Preprocessor #include with StringBuilder

Demonstrates how to implement #include with a Chilkat StringBuilder.

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() {

    // First build a string that has a preprocessor include
    var sbSrc = new chilkat.StringBuilder();
    sbSrc.Append("1\r\n2\r\n3\r\n");
    sbSrc.Append("#include <qa_data/txt/helloWorld.txt>\r\n");
    sbSrc.Append("4\r\n5\r\n");

    console.log(sbSrc.GetAsString());

    // sbSrc contains:
    // 	1
    // 	2
    // 	3
    // 	#include <qa_data/txt/helloWorld.txt>
    // 	4
    // 	5

    // The qa_data/txt/helloWorld.txt file contains "Hello World!"

    var filePath = sbSrc.GetAfterBetween("#include","<",">");
    if (sbSrc.LastMethodSuccess !== true) {
        console.log("No #include's found.");
        return;
    }

    console.log("filePath: " + filePath);

    // Load the contents of the filePath
    var sbIncludeFile = new chilkat.StringBuilder();
    sbIncludeFile.LoadFile(filePath,"utf-8");

    // Replace the first occurrence of #include <...> line with the contents of the include file.
    sbSrc.ReplaceAllBetween("#include",">",sbIncludeFile.GetAsString(),true);

    console.log(sbSrc.GetAsString());

    // sbSrce now contains:
    // 	1
    // 	2
    // 	3
    // 	Hello World!
    // 	4
    // 	5

}

chilkatExample();