#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(); } } } }