Dart

StringBuilder GetBefore

Demonstrates the StringBuilder.GetBefore method.

The GetBefore method was added in Chilkat v9.5.0.77

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final sb = CkStringBuilder();
  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);
  print('substr = $substr');
  print('sb contains: ${sb.getAsString()}');

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

  removeFlag = true;
  substr = sb.getBefore(marker, removeFlag);
  print('substr = $substr');
  print('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);
    print('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: 
}