//
// TiffDumper.java
//

import java.io.IOException;
import java.lang.reflect.Array;
import java.util.Arrays;
import loci.common.RandomAccessInputStream;
import loci.formats.tiff.*;

/**
 * Parses and outputs all IFDs for the given TIFF file(s).
 *
 * <dl><dt><b>Source code:</b></dt>
 * <dd><a href="http://trac.openmicroscopy.org.uk/ome/browser/bioformats.git/components/bio-formats/utils/TiffDumper.java">Trac</a>,
 * <a href="http://git.openmicroscopy.org/?p=bioformats.git;a=blob;f=components/bio-formats/utils/TiffDumper.java;hb=HEAD">Gitweb</a></dd></dl>
 */
public class TiffDumper {

  public static void main(String[] args) throws IOException {
    if (args.length == 0) {
      System.out.println("Usage: java TiffDumper file1 file2 ...");
      return;
    }
    for (int i=0; i<args.length; i++) dumpIFDs(args[i]);
  }

  public static void dumpIFDs(String path) throws IOException {
    RandomAccessInputStream in = new RandomAccessInputStream(path);
    TiffParser parser = new TiffParser(in);
    IFDList ifdList = parser.getIFDs();
    for (IFD ifd : ifdList) {
      for (Integer key : ifd.keySet()) {
        int k = key.intValue();
        String name = IFD.getIFDTagName(k);
        String value = prettyValue(ifd.getIFDValue(k), 0);
        System.out.println(name + " = " + value);
      }
    }
  }

  private static String prettyValue(Object value, int indent) {
    if (!value.getClass().isArray()) return value.toString();

    char[] spaceChars = new char[indent];
    Arrays.fill(spaceChars, ' ');
    String spaces = new String(spaceChars);

    StringBuilder sb = new StringBuilder();
    sb.append("{\n");
    for (int i=0; i<Array.getLength(value); i++) {
      sb.append(spaces);
      sb.append("  ");
      Object component = Array.get(value, i);
      sb.append(prettyValue(component, indent + 2));
      sb.append("\n");
    }
    sb.append(spaces);
    sb.append("}");
    return sb.toString();
  }

}