Mega Code Archive
Implements the same behaviour as the touch utility on Unix
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#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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