(Node.js) StringBuilder GetBefore

Demonstrates the StringBuilder.GetBefore method.

The GetBefore method was added in Chilkat v9.5.0.77

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() {

    var sb = new chilkat.StringBuilder();
    var success = sb.Append("www.chilkatsoft.com");

    // The GetBefore method returns the contents of the string up to but not including
    // the marker string.  If the remove flag is true, then both the returned string AND
    // the marker are removed.
    var removeFlag = false;
    var marker = ".";
    var substr = sb.GetBefore(marker,removeFlag);
    console.log("substr = " + substr);
    console.log("sb contains: " + sb.GetAsString());

    // Output:
    // substr = www
    // sb contains: www.chilkatsoft.com

    removeFlag = true;
    substr = sb.GetBefore(marker,removeFlag);
    console.log("substr = " + substr);
    console.log("sb contains: " + sb.GetAsString());

    // Output:
    // substr = www
    // sb contains: chilkatsoft.com

    // If the marker is not found, and the removeFlag is true,
    // then the entire string is returned and the sb is cleared.
    // For example:
    sb.Clear();
    sb.Append("111--222--333--444");
    marker = "--";
    removeFlag = true;
    while ((sb.Length > 0)) {
        substr = sb.GetBefore(marker,removeFlag);
        console.log("substr = " + substr + ", sb contains: " + sb.GetAsString());
    }

    // Output is:
    // substr = 111, sb contains: 222--333--444
    // substr = 222, sb contains: 333--444
    // substr = 333, sb contains: 444
    // substr = 444, sb contains: 

}

chilkatExample();