using System;
using System.IO;
public class RandomAccess {
public static void Main(String[] args) {
FileStream fileStream = new FileStream("test.cs", FileMode.Open);
fileStream.Seek(20, SeekOrigin.Begin);
byte[] anInt = new byte[4];
fileStream.Read(anInt,0,4);
int number = anInt[3];
for(int i = 2; i >= 0; i--){
number *= 256;
number += anInt[i];
}
Console.WriteLine("The number starting at byte 20 is {0}", number);
fileStream.Close();
}
}
File Stream
Get Application Relative Path
///////////////////////////////////////////////////////////////////////////////////////////////
//
// This File is Part of the CallButler Open Source PBX (http://www.codeplex.com/callbutler
//
// Copyright (c) 2005-2008, Jim Heising
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation and/or
// other materials provided with the distribution.
//
// * Neither the name of Jim Heising nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
///////////////////////////////////////////////////////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Windows.Forms;
namespace WOSI.Utilities
{
public class FileUtils
{
public static string GetApplicationRelativePath(string relativePathFromAssembly)
{
return Path.GetFullPath(Path.GetDirectoryName(Application.ExecutablePath) + relativePathFromAssembly);
}
}
}
Combines two path strings.
#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
{
class MainClass
{
/// ---------------------------------------------------------------
/// <summary>
/// Combines two path strings.
/// </summary>
/// <param name="path1">The first path.</param>
/// <param name="path2">The second path.</param>
/// <returns>
/// A string containing the combined paths. If one of the specified
/// paths is a zero-length string, this method returns the other path.
/// If <paramref name="path2" /> contains an absolute path, this method
/// returns <paramref name="path2" />.
/// </returns>
/// <remarks>
/// <para>
/// On Unix, processing is delegated to <see cref="Path.Combine(string, string)" />.
/// </para>
/// <para>
/// On Windows, this method normalized the paths to avoid running into
/// the 260 character limit of a path and converts forward slashes in
/// both <paramref name="path1" /> and <paramref name="path2" /> to
/// the platform's directory separator character.
/// </para>
///
/// Courtesy of NAnt project.
/// </remarks>
/// ---------------------------------------------------------------
public static string CombinePaths(string path1, string path2)
{
if (path1 == null)
{
throw new ArgumentNullException("path1");
}
if (path2 == null)
{
throw new ArgumentNullException("path2");
}
if (Path.IsPathRooted(path2))
{
return path2;
}
char separatorChar = Path.DirectorySeparatorChar;
char[] splitChars = new char[] { '/', separatorChar };
// Now we split the Path by the Path Separator
String[] path2Parts = path2.Split(splitChars);
ArrayList arList = new ArrayList();
// for each Item in the path that differs from ".." we just add it
// to the ArrayList, but skip empty parts
for (int iCount = 0; iCount < path2Parts.Length; iCount++)
{
string currentPart = path2Parts[iCount];
// skip empty parts or single dot parts
if (currentPart.Length == 0 || currentPart == ".")
{
continue;
}
// if we get a ".." Try to remove the last item added (as if
// going up in the Directory Structure)
if (currentPart == "..")
{
if (arList.Count > 0 && ((string)arList[arList.Count - 1] != ".."))
{
arList.RemoveAt(arList.Count - 1);
}
else
{
arList.Add(currentPart);
}
}
else
{
arList.Add(currentPart);
}
}
bool trailingSeparator = (path1.Length > 0 && path1.IndexOfAny(splitChars, path1.Length - 1) != -1);
// if the first path ends in directory seperator character, then
// we need to omit that trailing seperator when we split the path
string[] path1Parts;
if (trailingSeparator)
{
path1Parts = path1.Substring(0, path1.Length - 1).Split(splitChars);
}
else
{
path1Parts = path1.Split(splitChars);
}
int counter = path1Parts.Length;
// if the second path starts with parts to move up the directory tree,
// then remove corresponding parts in the first path
//
// eg. path1 = d:whateveryouwant odo
// path2 = ../../test
//
// ->
//
// path1 = d:whateveryouwant
// path2 = test
ArrayList arList2 = (ArrayList)arList.Clone();
for (int i = 0; i < arList2.Count; i++)
{
// never discard first part of path1
if ((string)arList2[i] != ".." || counter < 2)
{
break;
}
// skip part of current directory
counter--;
arList.RemoveAt(0);
}
string separatorString = separatorChar.ToString(CultureInfo.InvariantCulture);
// if path1 only has one remaining part, and the original path had
// a trailing separator character or the remaining path had multiple
// parts (which were discarded by a relative path in path2), then
// add separator to remaining part
if (counter == 1 && (trailingSeparator || path1Parts.Length > 1))
{
path1Parts[0] += separatorString;
}
string combinedPath = Path.Combine(string.Join(separatorString, path1Parts,
0, counter), string.Join(separatorString, (String[])arList.ToArray(typeof(String))));
// if path2 ends in directory separator character, then make sure
// combined path has trailing directory separator character
if (path2.EndsWith("/") || path2.EndsWith(separatorString))
{
combinedPath += Path.DirectorySeparatorChar;
}
return combinedPath;
}
}
}
Split the path into array of string
#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>
/// Determine if a path provided is the path of a file
/// </summary>
/// <param name="path"></param>
/// <returns>true if path is a valid file, false otherwise</returns>
/// ---------------------------------------------------------------
public static bool IsFile(string path)
{
return File.Exists(path);
}
/// ---------------------------------------------------------------
/// <summary>
/// Determine if a path is the path of a directory.
/// </summary>
/// <param name="path"></param>
/// <returns>true if path is a valid directory, false otherwise</returns>
/// ---------------------------------------------------------------
public static bool IsDirectory(string path)
{
return Directory.Exists(path);
}
/// ---------------------------------------------------------------
/// <summary>
/// Split the path into array of string
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
/// ---------------------------------------------------------------
public static String[] SplitPath(string path)
{
String[] pathSeparators = new String[] { "" };
return path.Split(pathSeparators, StringSplitOptions.RemoveEmptyEntries);
}
}
}
Combines two path strings.
#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
{
class MainClass
{
/// ---------------------------------------------------------------
/// <summary>
/// Combines two path strings.
/// </summary>
/// <param name="path1">The first path.</param>
/// <param name="path2">The second path.</param>
/// <returns>
/// A string containing the combined paths. If one of the specified
/// paths is a zero-length string, this method returns the other path.
/// If <paramref name="path2" /> contains an absolute path, this method
/// returns <paramref name="path2" />.
/// </returns>
/// <remarks>
/// <para>
/// On Unix, processing is delegated to <see cref="Path.Combine(string, string)" />.
/// </para>
/// <para>
/// On Windows, this method normalized the paths to avoid running into
/// the 260 character limit of a path and converts forward slashes in
/// both <paramref name="path1" /> and <paramref name="path2" /> to
/// the platform's directory separator character.
/// </para>
///
/// Courtesy of NAnt project.
/// </remarks>
/// ---------------------------------------------------------------
public static string CombinePaths(string path1, string path2)
{
if (path1 == null)
{
throw new ArgumentNullException("path1");
}
if (path2 == null)
{
throw new ArgumentNullException("path2");
}
if (Path.IsPathRooted(path2))
{
return path2;
}
char separatorChar = Path.DirectorySeparatorChar;
char[] splitChars = new char[] { '/', separatorChar };
// Now we split the Path by the Path Separator
String[] path2Parts = path2.Split(splitChars);
ArrayList arList = new ArrayList();
// for each Item in the path that differs from ".." we just add it
// to the ArrayList, but skip empty parts
for (int iCount = 0; iCount < path2Parts.Length; iCount++)
{
string currentPart = path2Parts[iCount];
// skip empty parts or single dot parts
if (currentPart.Length == 0 || currentPart == ".")
{
continue;
}
// if we get a ".." Try to remove the last item added (as if
// going up in the Directory Structure)
if (currentPart == "..")
{
if (arList.Count > 0 && ((string)arList[arList.Count - 1] != ".."))
{
arList.RemoveAt(arList.Count - 1);
}
else
{
arList.Add(currentPart);
}
}
else
{
arList.Add(currentPart);
}
}
bool trailingSeparator = (path1.Length > 0 && path1.IndexOfAny(splitChars, path1.Length - 1) != -1);
// if the first path ends in directory seperator character, then
// we need to omit that trailing seperator when we split the path
string[] path1Parts;
if (trailingSeparator)
{
path1Parts = path1.Substring(0, path1.Length - 1).Split(splitChars);
}
else
{
path1Parts = path1.Split(splitChars);
}
int counter = path1Parts.Length;
// if the second path starts with parts to move up the directory tree,
// then remove corresponding parts in the first path
//
// eg. path1 = d:whateveryouwant odo
// path2 = ../../test
//
// ->
//
// path1 = d:whateveryouwant
// path2 = test
ArrayList arList2 = (ArrayList)arList.Clone();
for (int i = 0; i < arList2.Count; i++)
{
// never discard first part of path1
if ((string)arList2[i] != ".." || counter < 2)
{
break;
}
// skip part of current directory
counter--;
arList.RemoveAt(0);
}
string separatorString = separatorChar.ToString(CultureInfo.InvariantCulture);
// if path1 only has one remaining part, and the original path had
// a trailing separator character or the remaining path had multiple
// parts (which were discarded by a relative path in path2), then
// add separator to remaining part
if (counter == 1 && (trailingSeparator || path1Parts.Length > 1))
{
path1Parts[0] += separatorString;
}
string combinedPath = Path.Combine(string.Join(separatorString, path1Parts,
0, counter), string.Join(separatorString, (String[])arList.ToArray(typeof(String))));
// if path2 ends in directory separator character, then make sure
// combined path has trailing directory separator character
if (path2.EndsWith("/") || path2.EndsWith(separatorString))
{
combinedPath += Path.DirectorySeparatorChar;
}
return combinedPath;
}
}
}
Make Absolute Path
#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.IO;
using System.Reflection;
using System.Web;
namespace Dotnet.Commons.IO
{
/// <summary>
/// Path handling utility methods that are not available in System.IO.Path
/// </summary>
/// <remarks>Authors: Gonzalo Paniagua Javier (gonzalo@ximian.com)</remarks>
public sealed class PathUtils
{
static string appbase;
static char [] separators;
private PathUtils()
{
}
/// <summary>
/// Static Constructor
/// </summary>
static PathUtils ()
{
Assembly entry = Assembly.GetEntryAssembly ();
appbase = Path.GetDirectoryName (entry.Location);
if (Path.DirectorySeparatorChar != Path.AltDirectorySeparatorChar)
separators = new char [] {Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar};
else
separators = new char [] {Path.DirectorySeparatorChar};
}
/// <summary>
///
/// </summary>
/// <param name="abspath"></param>
/// <returns></returns>
/// <remarks>Authors: Gonzalo Paniagua Javier (gonzalo@ximian.com)</remarks>
public static string MakeAbsolute (string abspath)
{
string [] parts = abspath.Split (separators);
ArrayList valid = new ArrayList ();
int len = parts.Length;
bool hasDots = false;
for (int i = 0; i < len; i++)
{
if (parts [i] == ".")
{
hasDots = true;
continue;
}
if (parts [i] == "..")
{
hasDots = true;
if (valid.Count > 0)
valid.RemoveAt (valid.Count - 1);
continue;
}
valid.Add (parts [i]);
}
if (!hasDots)
return abspath;
parts = (String []) valid.ToArray (typeof (string));
string result = String.Join (new String (Path.DirectorySeparatorChar, 1), parts);
if (!Path.IsPathRooted (result))
return Path.DirectorySeparatorChar + result;
return result;
}
}
}
Get Relative Path
#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>
/// Get Relative Path
/// </summary>
/// <param name="rootPath"></param>
/// <param name="fullPath"></param>
/// <returns></returns>
/// <remarks>Based on Turtle.Lib.Utilities.FileUtils</remarks>
/// ---------------------------------------------------------------
public static string GetRelativePath(string rootPath, string fullPath)
{
if (String.IsNullOrEmpty(rootPath) || String.IsNullOrEmpty(fullPath))
{
return null;
}
else if (fullPath.Equals(rootPath))
{
return string.Empty;
}
else if (fullPath.Contains(rootPath + ""))
{
return fullPath.Substring(rootPath.Length + 1);
}
else
{
return null;
}
}
}
}