#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> /// Reads data from the beginning of a stream until the end is reached. The /// data is returned as a byte array. /// </summary> /// <param name="stream">The stream to read data from</param> /// <exception cref="IOException">thrown if any of the underlying IO calls fail</exception> /// <remarks>Use this method if you don't know the length of the stream in advance /// (for instance a network stream) and just want to read the whole lot into a buffer. /// <para> /// <strong>Note:</strong><br/> /// This method of reading the stream is not terribly efficient. /// </para> /// </remarks> public static byte[] GetBytes(Stream stream) { if (stream is MemoryStream) return ((MemoryStream)stream).ToArray(); byte[] byteArray = new byte[1024]; using (MemoryStream ms = new MemoryStream()) { stream.Position = 0; while (true) { int readLen = stream.Read(byteArray, 0, byteArray.Length); if (readLen <= 0) return ms.ToArray(); ms.Write(byteArray, 0, readLen); } } } /// <summary> /// Reads data from a stream until the end is reached. The /// data is returned as a byte array. /// </summary> /// <param name="stream">The stream to read data from</param> /// <param name="initialLength">The initial buffer length. If the length is &lt; 1, /// then the default value of <see cref="Int16.MaxValue"/> will be used. /// </param> /// <exception cref="IOException">thrown if any of the underlying IO calls fail</exception> /// <remarks>Use this method to get the data if you know the expected length of data to start with.</remarks> public static byte[] GetBytes(Stream stream, long initialLength) { // If we've been passed an unhelpful initial length, just // use 32K. if (initialLength < 1) initialLength = Int16.MaxValue; byte[] buffer = new byte[initialLength]; int read = 0; int chunk; while ((chunk = stream.Read(buffer, read, buffer.Length - read)) > 0) { read += chunk; // If we've reached the end of our buffer, check to see if there's // any more information if (read == buffer.Length) { int nextByte = stream.ReadByte(); // End of stream? If so, we're done if (nextByte == -1) { return buffer; } // Nope. Resize the buffer, put in the byte we've just // read, and continue byte[] newBuffer = new byte[buffer.Length * 2]; Array.Copy(buffer, newBuffer, buffer.Length); newBuffer[read] = (byte)nextByte; buffer = newBuffer; read++; } } // Buffer is now too big. Shrink it. byte[] ret = new byte[read]; Array.Copy(buffer, ret, read); return ret; } /// --------------------------------------------------------------- /// <summary> /// Read binary context of a file. /// </summary> /// <param name="path">Full path (directory + filename) of file to read</param> /// <returns>content in byte array</returns> /// --------------------------------------------------------------- public static byte[] ReadBinaryFile(string path) { FileInfo fi = new FileInfo(path); byte[] data = null; if (!fi.Exists) throw new IOException(path + " does not exists"); // Read File using (Stream stream = File.OpenRead(path)) { // Get Data from The Stream data = GetBytes(stream, fi.Length); // Close Stream stream.Close(); } fi.Refresh(); // Return Data return (data); } } }