Dart Requires Chilkat v11.7.0+

Rejoin Words Hyphenated at Line Ends

See more PDF Text Extraction Examples

Demonstrates the "dehyphenate" clean-up option (true by default). A word broken at the end of a line ("docu-" / "ment") is rejoined, while a hyphen that belongs to the word ("self-service") is kept. Set the option to false to keep the lines exactly as printed. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // The PDF used in this example is available at hyphenated.pdf

  final pdf = CkPdf();
  try {
    pdf.loadFile('qa_data/pdf/hyphenated.pdf');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final json = CkJsonObject();
  final jsonOut = CkJsonObject();

  // The paragraph breaks "document", "self-service", "underlying" and "re-issued" at line ends.
  // The default rejoins them.  "self-service" keeps its hyphen because the word appears with it,
  // unbroken, elsewhere on the page; "re-issued" appears nowhere else, so it becomes "reissued".
  try {
    pdf.extractText('text', json, jsonOut);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('---- default (dehyphenate: true) ----');
  print(jsonOut.stringOf('text'));

  json.updateBool('dehyphenate', false);
  try {
    pdf.extractText('text', json, jsonOut);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('---- dehyphenate: false ----');
  print(jsonOut.stringOf('text'));

  // Sample output:

  // ---- default (dehyphenate: true) ----
  // Self-Service Kiosk Notes
  // 
  // The new self-service kiosk in the lobby prints a visitor badge from the document number on the reservation. Staff should direct first-time visitors to the self-service kiosk rather than the desk, and should keep the paper tray topped up. The underlying software restarts itself overnight; a badge that fails to print is reissued at the desk on request.
  // ---- dehyphenate: false ----
  // Self-Service Kiosk Notes
  // 
  // The new self-service kiosk in the lobby prints a visitor badge from the docu- ment number on the reservation. Staff should direct first-time visitors to the self- service kiosk rather than the desk, and should keep the paper tray topped up. The under- lying software restarts itself overnight; a badge that fails to print is re- issued at the desk on request.
}