package demo;

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import at.gv.egiz.pdfas.api.analyze.NonTextObjectInfo;
import at.gv.egiz.pdfas.api.io.DataSource;
import at.gv.egiz.pdfas.impl.api.commons.PdfDataSourceAdapter;
import at.gv.egiz.pdfas.io.FileBasedDataSource;
import at.knowcenter.wag.egov.egiz.PdfAS;

public class ExtractNonTextualObjectsDemo {

   /**
    * Disable instantiation.
    */
   private ExtractNonTextualObjectsDemo() {
   }

   /**
    * Starts a demo that extracts non-textual elements from a document.
    * 
    * @param args
    *           The parameter(s).
    */
   public static void main(String[] args) {

      if (args == null || args.length == 0) {
         System.err.println("Please provide path of file to be analyzed.");
         System.exit(1);
      }

      File testFile = new File(args[0]);

      try {
         
         // set source
         DataSource dataSource = new FileBasedDataSource(testFile, "application/pdf");

         List nonTextualObjects = PdfAS.extractNonTextualObjects(new PdfDataSourceAdapter(dataSource));
         if (nonTextualObjects != null && !nonTextualObjects.isEmpty()) {
            System.out.println(nonTextualObjects.size() + " non-textual object(s) found.");
            Iterator noit = nonTextualObjects.iterator();
            while (noit.hasNext()) {
               NonTextObjectInfo info = (NonTextObjectInfo) noit.next();
               System.out.println("  -> " + info.toString());
            }
         } else {
            System.out.println("No non-textual objects found.");
         }
         
      } catch (IOException e) {
         e.printStackTrace();
      }

   }

}