A Namespace Extension Toolkit

/*
 Copyright 2005 Chad Yoshikawa
 http://www.ececs.uc.edu/~yoshikco
 yoshikco@ececs.uc.edu

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

*/
using System;
using System.IO;
using System.Diagnostics;
using System.Net.Sockets;

using CSharpFileSystem;

namespace CSharpFileSystem.Commands
{
	/// <summary>
	/// List files in a directory and return the result
	/// </summary>
	public class ListFilesCommand : FileSystemCommand
	{
		

		/// <summary>
		/// Create a new command capable of listing files in the Galaxy filesystem
		/// </summary>
		/// <param name="reader">The socket from the NSE</param>
		/// <param name="writer">The socket to the NSE</param>
		public ListFilesCommand(BinaryReader reader, BinaryWriter writer):base(reader,writer)
		{
			;
		}


		/// <summary>
		/// List files in Galaxy and return the result
		/// INPUT: Fully-qualified absolute path
		/// OUTPUT: 
		/// number of files
		///	followed by "number of files" of the following 3 things:
		/// filename
		/// filesize
		/// folderflag
		/// </summary>
		/// <param name="fs">the Galaxy filesystem object</param>
		public override void DoIt(FileSystem fs) {
			string path = IOLibrary.ReadString(myReader);
			//Debug.WriteLine("CSharpFileSystem::ListFilesCommand listing files of path "+path);

			// This is where we call out to the filesystem object
			CSharpFileSystem.FileInfo [] file_infos = fs.ListFiles(path);
			//Debug.WriteLine("CSharpFileSystem::ListFilesCommand done listing files of path "+path);


			IOLibrary.WriteInt(myWriter,file_infos.Length); // how many we're going to write back
			foreach (CSharpFileSystem.FileInfo info in file_infos) {
				IOLibrary.WriteString(myWriter,info.FileName);
				IOLibrary.WriteInt(myWriter,(int)info.Size);
				IOLibrary.WriteShort(myWriter,(short)(info.FolderFlag?1:0));
			}
			//Debug.WriteLine("CSharpFileSystem::ListFilesCommand done writing back "+file_infos.Length+" entries to NSE over the wire for path "+path);
			
		}
 
		
	} // end class
} // end namespace