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Viewing changes to src/core/Simias.log4net/src/Util/PatternStringConverters/.svn/text-base/UserNamePatternConverter.cs.svn-base

  • Committer: Jorge O. Castro
  • Date: 2007-12-03 06:56:46 UTC
  • Revision ID: jorge@ubuntu.com-20071203065646-mupcnjcwgm5mnhyt
* Remove a bunch of .svn directories we no longer need.

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src/core/Simias.log4net/src/Util/PatternStringConverters/.svn/text-base/UserNamePatternConverter.cs.svn-base
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#region Copyright & License
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//
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// Copyright 2001-2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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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using log4net.Util;
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namespace log4net.Util.PatternStringConverters
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{
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        /// <summary>
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        /// Write the current threads username to the output
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        /// </summary>
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        /// <remarks>
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        /// <para>
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        /// Write the current threads username to the output writer
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        /// </para>
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        /// </remarks>
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        /// <author>Nicko Cadell</author>
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        internal sealed class UserNamePatternConverter : PatternConverter 
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        {
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                /// <summary>
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                /// Write the current threads username to the output
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                /// </summary>
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                /// <param name="writer">the writer to write to</param>
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                /// <param name="state">null, state is not set</param>
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                /// <remarks>
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                /// <para>
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                /// Write the current threads username to the output <paramref name="writer"/>.
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                /// </para>
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                /// </remarks>
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                override protected void Convert(TextWriter writer, object state) 
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                {
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#if (NETCF || SSCLI)
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                        // On compact framework there's no notion of current Windows user
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                        writer.Write( SystemInfo.NotAvailableText );
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#else
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                        try
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                        {
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                                System.Security.Principal.WindowsIdentity windowsIdentity = null;
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                                windowsIdentity = System.Security.Principal.WindowsIdentity.GetCurrent();
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                                if (windowsIdentity != null && windowsIdentity.Name != null)
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                                {
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                                        writer.Write( windowsIdentity.Name );
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                                }
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                        }
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                        catch(System.Security.SecurityException)
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                        {
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                                // This security exception will occur if the caller does not have 
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                                // some undefined set of SecurityPermission flags.
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                                LogLog.Debug("UserNamePatternConverter: Security exception while trying to get current windows identity. Error Ignored.");
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                                writer.Write( SystemInfo.NotAvailableText );
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                        }
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#endif
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                }
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        }
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}