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//
// System.Web.VirtualPathUtility.cs
//
// Author:
// Chris Toshok (toshok@ximian.com)
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
using System.Web.Util;
namespace System.Web {
public static class VirtualPathUtility
{
public static string AppendTrailingSlash (string virtualPath)
{
if (virtualPath == null)
return virtualPath;
int length = virtualPath.Length;
if (length == 0 || virtualPath [length - 1] == '/')
return virtualPath;
return virtualPath + "/";
}
public static string Combine (string basePath, string relativePath)
{
if (basePath == null || basePath == "")
throw new ArgumentNullException ("basePath");
if (relativePath == null || relativePath == "")
throw new ArgumentNullException ("relativePath");
if (basePath [0] != '/')
throw new ArgumentException ("basePath is not an absolute path", "basePath");
if (relativePath [0] != '/')
return "/" + relativePath;
return UrlUtils.Combine (basePath, relativePath);
}
public static string GetDirectory (string virtualPath)
{
if (virtualPath == null || virtualPath == "") // Yes, "" throws an ArgumentNullException
throw new ArgumentNullException ("virtualPath");
if (virtualPath [0] != '/')
throw new ArgumentException ("The virtual path is not rooted", "virtualPath");
string result = UrlUtils.GetDirectory (virtualPath);
return AppendTrailingSlash (result);
}
public static string GetExtension (string virtualPath)
{
string filename = GetFileName (virtualPath);
int dot = filename.LastIndexOf ('.');
if (dot == -1 || dot == filename.Length + 1)
return "";
return filename.Substring (dot);
}
public static string GetFileName (string virtualPath)
{
if (virtualPath == null || virtualPath == "") // Yes, "" throws an ArgumentNullException
throw new ArgumentNullException ("virtualPath");
return UrlUtils.GetFile (RemoveTrailingSlash (virtualPath));
}
public static bool IsAbsolute (string virtualPath)
{
if (virtualPath == "" || virtualPath == null)
throw new ArgumentNullException ("virtualPath");
return (virtualPath [0] == '/');
}
public static bool IsAppRelative (string virtualPath)
{
if (virtualPath == null || virtualPath == "")
throw new ArgumentNullException ("virtualPath");
string vpath = HttpRuntime.AppDomainAppVirtualPath;
if (vpath == null)
return false;
return virtualPath.StartsWith (AppendTrailingSlash (vpath));
}
public static string MakeRelative (string fromPath, string toPath)
{
if (fromPath == null || toPath == null)
throw new NullReferenceException (); // yeah!
if (toPath == "")
return toPath;
if (toPath [0] != '/')
throw new ArgumentOutOfRangeException (); // This is what MS does.
if (fromPath.Length > 0 && fromPath [0] != '/')
throw new ArgumentOutOfRangeException (); // This is what MS does.
Uri from = new Uri ("http://nothing" + fromPath);
return from.MakeRelativeUri (new Uri ("http://nothing" + toPath)).AbsolutePath;
}
public static string RemoveTrailingSlash (string virtualPath)
{
if (virtualPath == null || virtualPath == "")
return null;
int last = virtualPath.Length - 1;
if (last == 0 || virtualPath [last] != '/')
return virtualPath;
return virtualPath.Substring (0, last);
}
public static string ToAbsolute (string virtualPath)
{
string apppath = HttpRuntime.AppDomainAppVirtualPath;
if (apppath == null)
throw new HttpException ("The path to the application is not known");
return ToAbsolute (apppath, virtualPath);
}
public static string ToAbsolute (string virtualPath, string applicationPath)
{
if (applicationPath == null || applicationPath == "")
throw new ArgumentNullException ("applicationPath");
if (virtualPath == null || virtualPath == "")
throw new ArgumentNullException ("virtualPath");
if (virtualPath.StartsWith (".."))
throw new ArgumentException (String.Format ("Relative path not allowed: '{0}'", virtualPath));
if (applicationPath [0] != '/')
throw new ArgumentOutOfRangeException ("appPath is not rooted", "applicationPath");
return UrlUtils.Combine (applicationPath, virtualPath);
}
public static string ToAppRelative (string virtualPath)
{
string apppath = HttpRuntime.AppDomainAppVirtualPath;
if (apppath == null)
throw new HttpException ("The path to the application is not known");
return ToAppRelative (apppath, virtualPath);
}
public static string ToAppRelative (string virtualPath, string applicationPath)
{
if (applicationPath == null || applicationPath == "")
throw new ArgumentNullException ("applicationPath");
if (virtualPath == null || virtualPath == "")
throw new ArgumentNullException ("virtualPath");
if (virtualPath.StartsWith (".."))
throw new ArgumentException (String.Format ("Relative path not allowed: '{0}'", virtualPath));
if (applicationPath [0] != '/')
throw new ArgumentOutOfRangeException ("appPath is not rooted", "applicationPath");
return MakeRelative (applicationPath, virtualPath);
}
}
}
#endif
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