/* RssDefault.cs
* =============
*
* RSS.NET (http://rss-net.sf.net/)
* Copyright 2002, 2003 George Tsiokos. All Rights Reserved.
*
* RSS 2.0 (http://blogs.law.harvard.edu/tech/rss)
* RSS 2.0 is offered by the Berkman Center for Internet & Society at
* Harvard Law School under the terms of the Attribution/Share Alike
* Creative Commons license.
*
* 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;
namespace Rss{
/// <summary>Contains default values and methods for maintaining data consistency</summary>
[Serializable()]
public class RssDefault
{
/// <summary>Default value for a string in all RSS classes</summary>
/// <value>empty string</value>
/// <remarks>If an element in the RSS class library has the value of RssDefault.String, consider the element as "not entered", "null", or empty.</remarks>
public const string String = "";
/// <summary>Default value for an int in all RSS classes</summary>
/// <value>-1</value>
/// <remarks>If an element in the RSS class library has the value of RssDefault.Int, consider the element as "not entered", "null", or empty.</remarks>
public const int Int = -1;
/// <summary>Default value for a DateTime in all RSS classes</summary>
/// <value>DateTime.MinValue</value>
/// <remarks>If an element in the RSS class library has the value of RssDefault.DateTime, consider the element as "not entered", "null", or empty.</remarks>
public static readonly DateTime DateTime = DateTime.MinValue;
/// <summary>Default value for a Uri in all RSS classes</summary>
/// <value>gopher://rss-net.sf.net</value>
/// <remarks>If an element in the RSS class library has the value of RssDefault.Uri, consider the element as "not entered", "null", or empty.</remarks>
public static readonly Uri Uri = new Uri("gopher://rss-net.sf.net");
/// <summary>Verifies the string passed is not null</summary>
/// <param name="input">string to verify</param>
/// <returns>RssDefault.String if input is null, otherwise input</returns>
/// <remarks>Method is used in properties to prevent a null value</remarks>
public static string Check(string input)
{
return input == null ? String : input;
}
/// <summary>Verifies the int passed is greater than or equal to -1</summary>
/// <param name="input">int to verify</param>
/// <returns>RssDefault.Int if int is less than -1, else input</returns>
/// <remarks>Method is used in properties to prevent values less than -1</remarks>
public static int Check(int input)
{
return input < -1 ? Int : input;
}
/// <summary>Verifies the Uri passed is not null</summary>
/// <param name="input">Uri to verify</param>
/// <returns>RssDefault.Uri if input is null, otherwise input</returns>
/// <remarks>Method is used in all properties to prevent a null value</remarks>
public static Uri Check(Uri input)
{
return input == null ? Uri : input;
}
}
}
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