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//------------------------------------------------------------------------------
//
// System.IO.CheckArgument.cs
//
// Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved
//
// Author: Jim Richardson, develop@wtfo-guru.com
// Created: Saturday, August 25, 2001
//
// NOTE: All contributors can freely add to this class or make modifications
// that do not break existing usage of methods
//------------------------------------------------------------------------------
//
// Copyright (C) 2004 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.
//
using System;
using System.IO;
namespace System.IO
{
/// <summary>
/// A utility class to assist with various argument validations in System.IO
/// </summary>
internal sealed class CheckArgument
{
/// <summary>
/// Generates and exception if arg contains whitepace only
/// </summary>
public static void WhitespaceOnly (string arg, string desc)
{
if (arg != null && arg.Length > 0)
{
string temp = arg.Trim ();
if (temp.Length == 0)
{
throw new ArgumentException (desc);
}
}
}
/// <summary>
/// Generates and exception if arg contains whitepace only
/// </summary>
public static void WhitespaceOnly (string arg)
{
WhitespaceOnly (arg, "Argument string consists of whitespace characters only.");
}
/// <summary>
/// Generates and exception if arg is empty
/// </summary>
public static void Empty (string arg, string desc)
{
if (arg != null && arg.Length == 0)
{
throw new ArgumentException (desc);
}
}
/// <summary>
/// Generates and exception if arg is empty
/// </summary>
public static void Empty (string arg)
{
Empty (arg, "Argument string is empty.");
}
/// <summary>
/// Generates and exception if arg is null
/// </summary>
public static void Null (Object arg, string desc)
{
if (arg == null)
{
throw new ArgumentNullException (desc);
}
}
/// <summary>
/// Generates and exception if arg is null
/// </summary>
public static void Null (Object arg)
{
if (arg == null)
{
throw new ArgumentNullException ();
}
}
/// <summary>
/// Generates and exception if path contains invalid path characters
/// </summary>
public static void PathChars (string path, string desc)
{
if (path != null)
{
if (path.IndexOfAny (System.IO.Path.InvalidPathChars) > -1)
{
throw new ArgumentException (desc);
}
}
}
/// <summary>
/// Generates and exception if path contains invalid path characters
/// </summary>
public static void PathChars (string path)
{
PathChars (path, "Path contains invalid characters");
}
/// <summary>
/// Generates and exception if path too long
/// </summary>
[MonoTODO ("Not implemented")]
public static void PathLength (string path, string desc)
{
//TODO: find out how long is too long
}
/// <summary>
/// Generates and exception if path too long
/// </summary>
public static void PathLength (string path)
{
PathLength (path, "Path is too long");
}
/// <summary>
/// Generates and exception if path is illegal
/// </summary>
public static void Path (string path, bool bAllowNull, bool bLength)
{
if (path != null) //allow null
{
Empty (path, "Path cannot be the empty string"); // path can't be empty
WhitespaceOnly (path, "Path cannot be all whitespace"); // path can't be all whitespace
PathChars (path); // path can't contain invalid characters
if (bLength)
{
PathLength ("Path too long");
}
}
else if (!bAllowNull)
{
throw new ArgumentNullException ("Parameter name: path");
}
}
/// <summary>
/// Generates and exception if path is illegal
/// </summary>
public static void Path (string path, bool bAllowNull)
{
Path (path, bAllowNull, false);
}
/// <summary>
/// Generates and exception if path is illegal
/// </summary>
public static void Path (string path)
{
Path (path, false, false);
}
}
} // namespace System.IO.Private
|
