log4net/Layout/Pattern/NamedPatternConverter.cs

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#region Copyright & License
//
// Copyright 2001-2005 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#endregion

using System;
using System.Globalization;
using System.Text;
using System.IO;

using log4net.Core;
using log4net.Util;

namespace log4net.Layout.Pattern
{
	/// <summary>
	/// Converter to output and truncate <c>'.'</c> separated strings
	/// </summary>
	/// <remarks>
	/// <para>
	/// This abstract class supports truncating a <c>'.'</c> separated string
	/// to show a specified number of elements from the right hand side.
	/// This is used to truncate class names that are fully qualified.
	/// </para>
	/// <para>
	/// Subclasses should override the <see cref="GetFullyQualifiedName"/> method to
	/// return the fully qualified string.
	/// </para>
	/// </remarks>
	/// <author>Nicko Cadell</author>
	internal abstract class NamedPatternConverter : PatternLayoutConverter, IOptionHandler
	{
		protected int m_precision = 0;

		#region Implementation of IOptionHandler

		/// <summary>
		/// Initialize the converter 
		/// </summary>
		/// <remarks>
		/// <para>
		/// This is part of the <see cref="IOptionHandler"/> delayed object
		/// activation scheme. The <see cref="ActivateOptions"/> method must 
		/// be called on this object after the configuration properties have
		/// been set. Until <see cref="ActivateOptions"/> is called this
		/// object is in an undefined state and must not be used. 
		/// </para>