| #region Apache License |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to you 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.IO; |
| |
| using log4net.Core; |
| |
| namespace log4net.Util |
| { |
| /// <summary> |
| /// Subclass of <see cref="QuietTextWriter"/> that maintains a count of |
| /// the number of bytes written. |
| /// </summary> |
| /// <remarks> |
| /// <para> |
| /// This writer counts the number of bytes written. |
| /// </para> |
| /// </remarks> |
| /// <author>Nicko Cadell</author> |
| /// <author>Gert Driesen</author> |
| public class CountingQuietTextWriter : QuietTextWriter |
| { |
| #region Public Instance Constructors |
| |
| /// <summary> |
| /// Constructor |
| /// </summary> |
| /// <param name="writer">The <see cref="TextWriter" /> to actually write to.</param> |
| /// <param name="errorHandler">The <see cref="IErrorHandler" /> to report errors to.</param> |
| /// <remarks> |
| /// <para> |
| /// Creates a new instance of the <see cref="CountingQuietTextWriter" /> class |
| /// with the specified <see cref="TextWriter" /> and <see cref="IErrorHandler" />. |
| /// </para> |
| /// </remarks> |
| public CountingQuietTextWriter(TextWriter writer, IErrorHandler errorHandler) : base(writer, errorHandler) |
| { |
| m_countBytes = 0; |
| } |
| |
| #endregion Public Instance Constructors |
| |
| #region Override implementation of QuietTextWriter |
| |
| /// <summary> |
| /// Writes a character to the underlying writer and counts the number of bytes written. |
| /// </summary> |
| /// <param name="value">the char to write</param> |
| /// <remarks> |
| /// <para> |
| /// Overrides implementation of <see cref="QuietTextWriter"/>. Counts |
| /// the number of bytes written. |
| /// </para> |
| /// </remarks> |
| public override void Write(char value) |
| { |
| try |
| { |
| base.Write(value); |
| |
| // get the number of bytes needed to represent the |
| // char using the supplied encoding. |
| m_countBytes += this.Encoding.GetByteCount(new char[] { value }); |
| } |
| catch(Exception e) |
| { |
| this.ErrorHandler.Error("Failed to write [" + value + "].", e, ErrorCode.WriteFailure); |
| } |
| } |
| |
| /// <summary> |
| /// Writes a buffer to the underlying writer and counts the number of bytes written. |
| /// </summary> |
| /// <param name="buffer">the buffer to write</param> |
| /// <param name="index">the start index to write from</param> |
| /// <param name="count">the number of characters to write</param> |
| /// <remarks> |
| /// <para> |
| /// Overrides implementation of <see cref="QuietTextWriter"/>. Counts |
| /// the number of bytes written. |
| /// </para> |
| /// </remarks> |
| public override void Write(char[] buffer, int index, int count) |
| { |
| if (count > 0) |
| { |
| try |
| { |
| base.Write(buffer, index, count); |
| |
| // get the number of bytes needed to represent the |
| // char array using the supplied encoding. |
| m_countBytes += this.Encoding.GetByteCount(buffer, index, count); |
| } |
| catch(Exception e) |
| { |
| this.ErrorHandler.Error("Failed to write buffer.", e, ErrorCode.WriteFailure); |
| } |
| } |
| } |
| |
| /// <summary> |
| /// Writes a string to the output and counts the number of bytes written. |
| /// </summary> |
| /// <param name="str">The string data to write to the output.</param> |
| /// <remarks> |
| /// <para> |
| /// Overrides implementation of <see cref="QuietTextWriter"/>. Counts |
| /// the number of bytes written. |
| /// </para> |
| /// </remarks> |
| override public void Write(string str) |
| { |
| if (str != null && str.Length > 0) |
| { |
| try |
| { |
| base.Write(str); |
| |
| // get the number of bytes needed to represent the |
| // string using the supplied encoding. |
| m_countBytes += this.Encoding.GetByteCount(str); |
| } |
| catch(Exception e) |
| { |
| this.ErrorHandler.Error("Failed to write [" + str + "].", e, ErrorCode.WriteFailure); |
| } |
| } |
| } |
| |
| #endregion Override implementation of QuietTextWriter |
| |
| #region Public Instance Properties |
| |
| /// <summary> |
| /// Gets or sets the total number of bytes written. |
| /// </summary> |
| /// <value> |
| /// The total number of bytes written. |
| /// </value> |
| /// <remarks> |
| /// <para> |
| /// Gets or sets the total number of bytes written. |
| /// </para> |
| /// </remarks> |
| public long Count |
| { |
| get { return m_countBytes; } |
| set { m_countBytes = value; } |
| } |
| |
| #endregion Public Instance Properties |
| |
| #region Private Instance Fields |
| |
| /// <summary> |
| /// Total number of bytes written. |
| /// </summary> |
| private long m_countBytes; |
| |
| #endregion Private Instance Fields |
| } |
| } |