Implements the same behaviour as the "touch" utility on Unix. : File Util « File Stream « C# / C Sharp






  1. C# / C Sharp
  2. File Stream
  3. File Util

Implements the same behaviour as the "touch" utility on Unix.

   

#region License and Copyright
/* -------------------------------------------------------------------------
 * Dotnet Commons IO
 *
 *
 * This library is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by 
 * the Free Software Foundation; either version 2.1 of the License, or 
 * (at your option) any later version.
 *
 * This library 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 Lesser General Public License 
 * for more details. 
 *
 * You should have received a copy of the GNU Lesser General Public License 
 * along with this library; if not, write to the 
 * 
 * Free Software Foundation, Inc., 
 * 59 Temple Place, 
 * Suite 330, 
 * Boston, 
 * MA 02111-1307 
 * USA 
 * 
 * -------------------------------------------------------------------------
 */
#endregion

using System;
using System.Collections;
using System.Globalization;
using System.IO;

namespace Dotnet.Commons.IO
{
  
  ///  
  /// <summary>  
  /// This class provides basic facilities for manipulating files and file paths.
    /// 
    /// <h3>File-related methods</h3>
    /// There are methods to 
    /// <list type="bullet">
    ///     <item>copy a file to another file,</item>
    ///     <item>compare the content of 2 files,</item>
    ///     <item>delete files using the wildcard character,</item>
    ///     <item>etc</item>
    /// </list>
  /// </summary>
  ///     
  public sealed class FileUtils
  {
        /// ---------------------------------------------------------------
        /// <summary>
    ///  Implements the same behaviour as the "touch" utility on Unix. It creates
    ///  a new file with size 0 or, if the file exists already, it is opened and
    ///  closed without modifying it, but updating the file date and time.
    /// </summary>
    /// <param name="file"> File to touch</param>
    /// <exception cref="IOException">If an I/O problem occurs</exception>
        /// ---------------------------------------------------------------
    public static void Touch(FileInfo file) 
    {
      if (file.Exists)
      {        
        FileStream fs = file.OpenRead();
        fs.Close();        
        file.LastAccessTime = DateTime.Now;
        file.Refresh();
      }
      else
      {
        FileStream fs = file.OpenWrite();        
        fs.WriteByte(0);
        fs.Close();        
        file.Refresh();
      }
    }
    }
}








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