using System;
using System.Security;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;

/*
 * FindFiles sample by Nick Codignotto
 * Copyright (c) 2003 Nick Codignotto
 * Permission to include this source code in your own programs is given 
 * with no restrictions. Parts of this source may be covered by external
 * copyrights and every effort to credit these external sources has been 
 * made.
 */
namespace FindFiles
{
    /*
     * Credit: http://www.aspheute.com/english/20001130.asp
     */
    public class ImageInfo
    {
        Bitmap bitmapRepresentation;

        public void Load(string strImageFile)
        {
            bitmapRepresentation = new Bitmap(strImageFile, false);
        }

        public void Unload()
        {
            bitmapRepresentation.Dispose();
            bitmapRepresentation = null;
        }
        
        public int Height
        {
            get { return bitmapRepresentation.Height; }
        }

        public int Width
        {
            get { return bitmapRepresentation.Width; }
        }  

        public string Format
        {
            get 
            {
                ImageFormat bmpFormat = bitmapRepresentation.RawFormat;
                string strFormat = "unidentified format";

                if (bmpFormat.Equals(ImageFormat.Bmp)) strFormat = "BMP";
                else if (bmpFormat.Equals(ImageFormat.Emf)) strFormat = "EMF";
                else if (bmpFormat.Equals(ImageFormat.Exif)) strFormat = "EXIF";
                else if (bmpFormat.Equals(ImageFormat.Gif)) strFormat = "GIF";
                else if (bmpFormat.Equals(ImageFormat.Icon)) strFormat = "Icon";
                else if (bmpFormat.Equals(ImageFormat.Jpeg)) strFormat = "JPEG";
                else if (bmpFormat.Equals(ImageFormat.MemoryBmp)) strFormat = "MemoryBMP";
                else if (bmpFormat.Equals(ImageFormat.Png)) strFormat = "PNG";
                else if (bmpFormat.Equals(ImageFormat.Tiff)) strFormat = "TIFF";
                else if (bmpFormat.Equals(ImageFormat.Wmf)) strFormat = "WMF";

                return strFormat;
            }
        }
    }
    
    interface FileAction
    {
        bool doAction(FileInfo file);
    }
    
    public class PrintAction: FileAction
    {
        public bool doAction(FileInfo file)
        {
            ImageInfo image = new ImageInfo();
            try
            {
                image.Load(file.FullName);
                Console.WriteLine(file.FullName + " " + image.Width + "x" + image.Height);
                image.Unload();
                return true;
            }
            catch (System.ArgumentException)
            {
                return false;
            }
        }
    }
    
    public class FindFiles
    {
        static int traverseFiles(FileAction action, DirectoryInfo dir)
        {
            int numFiles = 0;

            FileInfo[] files = dir.GetFiles();
            foreach (FileInfo f in files) 
            {      
                if (action.doAction(f))
                {
                    numFiles++;
                }
            }

            DirectoryInfo[] subdirs = dir.GetDirectories();
            foreach (DirectoryInfo d in subdirs) 
            {
                numFiles += traverseFiles(action, d);
            }

            return numFiles;
        }

        static void Main(string[] argv) 
        {
            String dir;
            if(argv.Length==0)
            {
                dir = ".";
            }
            else
            {
                dir = argv[0];
            }

            DirectoryInfo dirInfo = new DirectoryInfo(dir);
            if (dirInfo.Exists)
            {
                int numFiles = traverseFiles(new PrintAction(), dirInfo);
                Console.WriteLine("Found " + numFiles + " file(s).");
            }
            else
            {
                Console.WriteLine("This directory does not exist.");
            }
        }
    }
}