#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> Tests if the specified <i>file</i> is newer than the reference /// <i>file</i>. /// /// </summary> /// <param name="newerFile">the <i>file</i> of which the modification date must be compared /// </param> /// <param name="referenceFile">the <i>file</i> of which the modification date is used /// like reference /// </param> /// <returns> true if the <i>file</i> exists and has been modified more recently /// than the reference <i>file</i>. /// </returns> /// --------------------------------------------------------------- public static bool IsNewer(FileInfo newerFile, FileInfo referenceFile) { if (referenceFile == null) throw new ArgumentNullException("referenceFile"); bool exists = referenceFile.Exists; if (!referenceFile.Exists) exists = Directory.Exists(referenceFile.FullName); if (!exists) throw new System.ArgumentException("The reference file '" + referenceFile + "' doesn't exist"); return IsNewer(newerFile, referenceFile.LastWriteTime); } /// --------------------------------------------------------------- /// <summary> /// Tests if the specified <i>file</i> is newer than the specified /// time reference. /// </summary> /// <param name="file">the <i>file</i> of which the modification date must be compared.</param> /// <param name="timeCompare">the time reference</param> /// <returns>true if the <i>file</i> exists and has been modified after /// the given time reference.</returns> /// --------------------------------------------------------------- public static bool IsNewer(FileInfo file, DateTime timeCompare) { if (file == null) throw new ArgumentException("No file specified"); bool exists = file.Exists; if (!file.Exists) exists = Directory.Exists(file.FullName); if (!exists) return false; return (file.LastWriteTime > timeCompare); } } }