//
// Copyright (c) 2004-2006 Jaroslaw Kowalski <jaak@jkowalski.net>
//
// 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 Jaroslaw Kowalski 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.IO;
using System.Text;
using System.Collections;
namespace NLog.Conditions
{
/// <summary>
/// A bunch of utility methods (mostly predicates) which can be used in
/// condition expressions. Parially inspired by XPath 1.0.
/// </summary>
[ConditionMethods]
public class ConditionMethods
{
/// <summary>
/// Compares two objects for equality.
/// </summary>
/// <param name="o1">The first object</param>
/// <param name="o2">The second object</param>
/// <returns><b>true</b> when two objects are equal, <b>false</b> otherwise.</returns>
[ConditionMethod("equals")]
public static bool Equals2(object o1, object o2)
{
return o1.Equals(o2);
}
/// <summary>
/// Determines whether the second string is a substring of the first one.
/// </summary>
/// <param name="s1">The first string</param>
/// <param name="s2">The second string</param>
/// <returns><b>true</b> when the second string is a substring of the first string, <b>false</b> otherwise.</returns>
[ConditionMethod("contains")]
public static bool Contains(string s1, string s2)
{
return s1.IndexOf(s2) >= 0;
}
/// <summary>
/// Determines whether the second string is a prefix of the first one.
/// </summary>
/// <param name="s1">The first string</param>
/// <param name="s2">The second string</param>
/// <returns><b>true</b> when the second string is a prefix of the first string, <b>false</b> otherwise.</returns>
[ConditionMethod("starts-with")]
public static bool StartsWith(string s1, string s2)
{
return s1.StartsWith(s2);
}
/// <summary>
/// Determines whether the second string is a suffix of the first one.
/// </summary>
/// <param name="s1">The first string</param>
/// <param name="s2">The second string</param>
/// <returns><b>true</b> when the second string is a prefix of the first string, <b>false</b> otherwise.</returns>
[ConditionMethod("ends-with")]
public static bool EndsWith(string s1, string s2)
{
return s1.EndsWith(s2);
}
/// <summary>
/// Returns the length of a string.
/// </summary>
/// <param name="s">A string.</param>
/// <returns>The length of a string.</returns>
[ConditionMethod("length")]
public static int Length(string s)
{
return s.Length;
}
}
}