FileLog.cs

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// 
// Copyright (c) 2013-2017 Carsten Sonne Larsen <cs@innolan.net>
// 
// 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;
using System.IO;
using System.Text;

namespace Ntp.Common.Log
{
    public sealed class FileLog : TextLog, IDisposable
    {
        internal FileLog(string file, Severity threshold, string timeFormat)
            : base(threshold, timeFormat)
        {
            this.file = file;
        }

        private readonly string file;
        private TextWriter writer;

        public override void Close()
        {
            lock (Locker)
            {
                if (writer != null)
                {
                    writer.Close();
                    writer.Dispose();
                    writer = null;
                }
                Initialized = false;
                Closed = true;
            }
        }

        protected override TextWriter CreateWriter()
        {
            writer = new StreamWriter(file, true, Encoding.ASCII);
            return writer;
        }

        #region IDisposable Support

        private bool disposedValue;

        private void Dispose(bool disposing)
        {
            if (disposedValue)
                return;

            if (disposing && writer != null)
            {
                writer.Close();
                writer.Dispose();
                writer = null;
            }

            disposedValue = true;
            Closed = true;
        }

        ~FileLog()
        {
            Dispose(false);
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        #endregion
    }
}