#region Apache License
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//
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// Licensed to the Apache Software Foundation (ASF) under one or more
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// contributor license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright ownership.
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// The ASF licenses this file to you under the Apache License, Version 2.0
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// (the "License"); you may not use this file except in compliance with
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// the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#endregion
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using System;
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using System.Text;
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using System.IO;
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namespace log4net.Util
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{
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/// <summary>
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/// A <see cref="StringWriter"/> that can be <see cref="Reset"/> and reused
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/// </summary>
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/// <remarks>
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/// <para>
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/// A <see cref="StringWriter"/> that can be <see cref="Reset"/> and reused.
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/// This uses a single buffer for string operations.
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/// </para>
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/// </remarks>
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/// <author>Nicko Cadell</author>
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public class ReusableStringWriter : StringWriter
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{
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#region Constructor
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/// <summary>
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/// Create an instance of <see cref="ReusableStringWriter"/>
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/// </summary>
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/// <param name="formatProvider">the format provider to use</param>
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/// <remarks>
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/// <para>
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/// Create an instance of <see cref="ReusableStringWriter"/>
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/// </para>
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/// </remarks>
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public ReusableStringWriter(IFormatProvider formatProvider) : base(formatProvider)
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{
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}
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#endregion
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/// <summary>
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/// Override Dispose to prevent closing of writer
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/// </summary>
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/// <param name="disposing">flag</param>
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/// <remarks>
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/// <para>
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/// Override Dispose to prevent closing of writer
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/// </para>
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/// </remarks>
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protected override void Dispose(bool disposing)
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{
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// Do not close the writer
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}
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/// <summary>
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/// Reset this string writer so that it can be reused.
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/// </summary>
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/// <param name="maxCapacity">the maximum buffer capacity before it is trimmed</param>
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/// <param name="defaultSize">the default size to make the buffer</param>
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/// <remarks>
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/// <para>
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/// Reset this string writer so that it can be reused.
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/// The internal buffers are cleared and reset.
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/// </para>
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/// </remarks>
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public void Reset(int maxCapacity, int defaultSize)
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{
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// Reset working string buffer
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StringBuilder sb = this.GetStringBuilder();
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sb.Length = 0;
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// Check if over max size
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if (sb.Capacity > maxCapacity)
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{
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sb.Capacity = defaultSize;
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}
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}
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}
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}
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