package jxl.demo;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import jxl.WorkbookSettings;
import jxl.biff.StringHelper;
import jxl.biff.Type;
import jxl.read.biff.BiffException;
import jxl.read.biff.BiffRecordReader;
import jxl.read.biff.Record;

class WriteAccess {
  private BiffRecordReader reader;
  
  public WriteAccess(File file) throws IOException, BiffException {
    WorkbookSettings ws = new WorkbookSettings();
    FileInputStream fis = new FileInputStream(file);
    jxl.read.biff.File f = new jxl.read.biff.File(fis, ws);
    this.reader = new BiffRecordReader(f);
    display(ws);
    fis.close();
  }
  
  private void display(WorkbookSettings ws) throws IOException {
    Record r = null;
    boolean found = false;
    while (this.reader.hasNext() && !found) {
      r = this.reader.next();
      if (r.getType() == Type.WRITEACCESS)
        found = true; 
    } 
    if (!found) {
      System.err.println("Warning:  could not find write access record");
      return;
    } 
    byte[] data = r.getData();
    String s = null;
    s = StringHelper.getString(data, data.length, 0, ws);
    System.out.println(s);
  }
}