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1#region BSD License
2/*
3Copyright (c) 2004-2005 Matthew Holmes (matthew@wildfiregames.com), Dan Moorehead (dan05a@gmail.com)
4
5Redistribution and use in source and binary forms, with or without modification, are permitted
6provided that the following conditions are met:
7
8* Redistributions of source code must retain the above copyright notice, this list of conditions
9 and the following disclaimer.
10* Redistributions in binary form must reproduce the above copyright notice, this list of conditions
11 and the following disclaimer in the documentation and/or other materials provided with the
12 distribution.
13* The name of the author may not be used to endorse or promote products derived from this software
14 without specific prior written permission.
15
16THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
17BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
22IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23*/
24#endregion
25
26using System;
27using System.IO;
28
29namespace Prebuild.Core.Utilities
30{
31 /// <summary>
32 ///
33 /// </summary>
34 public enum LogType
35 {
36 /// <summary>
37 ///
38 /// </summary>
39 None,
40 /// <summary>
41 ///
42 /// </summary>
43 Info,
44 /// <summary>
45 ///
46 /// </summary>
47 Warning,
48 /// <summary>
49 ///
50 /// </summary>
51 Error
52 }
53
54 /// <summary>
55 ///
56 /// </summary>
57 [Flags]
58 public enum LogTargets
59 {
60 /// <summary>
61 ///
62 /// </summary>
63 None = 0,
64 /// <summary>
65 ///
66 /// </summary>
67 Null = 1,
68 /// <summary>
69 ///
70 /// </summary>
71 File = 2,
72 /// <summary>
73 ///
74 /// </summary>
75 Console = 4
76 }
77
78 /// <summary>
79 /// Summary description for Log.
80 /// </summary>
81 public class Log : IDisposable
82 {
83 #region Fields
84
85 private TextWriter m_Writer;
86 private LogTargets m_Target = LogTargets.Null;
87 bool disposed;
88
89 #endregion
90
91 #region Constructors
92
93 /// <summary>
94 /// Initializes a new instance of the <see cref="Log"/> class.
95 /// </summary>
96 /// <param name="target">The target.</param>
97 /// <param name="fileName">Name of the file.</param>
98 public Log(LogTargets target, string fileName)
99 {
100 m_Target = target;
101
102 if ((m_Target & LogTargets.File) != 0)
103 {
104 m_Writer = new StreamWriter(fileName, false);
105 }
106 else if ((m_Target & LogTargets.Console) != 0)
107 {
108 // Prevents null reference exceptions when outputing to the log file.
109 // This seems to only happen when running on a network drive.
110 m_Writer = Console.Out;
111 }
112 }
113
114 #endregion
115
116 #region Public Methods
117
118 /// <summary>
119 /// Writes this instance.
120 /// </summary>
121 public void Write()
122 {
123 Write(string.Empty);
124 }
125
126 /// <summary>
127 /// Writes the specified MSG.
128 /// </summary>
129 /// <param name="msg">The MSG.</param>
130 public void Write(string msg)
131 {
132 if((m_Target & LogTargets.Null) != 0)
133 {
134 return;
135 }
136
137 if((m_Target & LogTargets.Console) != 0)
138 {
139 Console.WriteLine(msg);
140 }
141 if((m_Target & LogTargets.File) != 0 && m_Writer != null)
142 {
143 m_Writer.WriteLine(msg);
144 }
145 }
146
147 /// <summary>
148 /// Writes the specified format.
149 /// </summary>
150 /// <param name="format">The format.</param>
151 /// <param name="args">The args.</param>
152 public void Write(string format, params object[] args)
153 {
154 Write(string.Format(format,args));
155 }
156
157 /// <summary>
158 /// Writes the specified type.
159 /// </summary>
160 /// <param name="type">The type.</param>
161 /// <param name="format">The format.</param>
162 /// <param name="args">The args.</param>
163 public void Write(LogType type, string format, params object[] args)
164 {
165 if((m_Target & LogTargets.Null) != 0)
166 {
167 return;
168 }
169
170 string str = "";
171 switch(type)
172 {
173 case LogType.Info:
174 str = "[I] ";
175 break;
176 case LogType.Warning:
177 str = "[!] ";
178 break;
179 case LogType.Error:
180 str = "[X] ";
181 break;
182 }
183
184 Write(str + format,args);
185 }
186
187 /// <summary>
188 /// Writes the exception.
189 /// </summary>
190 /// <param name="type">The type.</param>
191 /// <param name="ex">The ex.</param>
192 public void WriteException(LogType type, Exception ex)
193 {
194 if(ex != null)
195 {
196 Write(type, ex.Message);
197 //#if DEBUG
198 m_Writer.WriteLine("Exception @{0} stack trace [[", ex.TargetSite.Name);
199 m_Writer.WriteLine(ex.StackTrace);
200 m_Writer.WriteLine("]]");
201 //#endif
202 }
203 }
204
205 /// <summary>
206 /// Flushes this instance.
207 /// </summary>
208 public void Flush()
209 {
210 if(m_Writer != null)
211 {
212 m_Writer.Flush();
213 }
214 }
215
216 #endregion
217
218 #region IDisposable Members
219
220 /// <summary>
221 /// Performs application-defined tasks associated with freeing, releasing, or
222 /// resetting unmanaged resources.
223 /// </summary>
224 public void Dispose()
225 {
226 Dispose(true);
227 GC.SuppressFinalize(this);
228 }
229
230 /// <summary>
231 /// Dispose objects
232 /// </summary>
233 /// <param name="disposing">
234 /// If true, it will dispose close the handle
235 /// </param>
236 /// <remarks>
237 /// Will dispose managed and unmanaged resources.
238 /// </remarks>
239 protected virtual void Dispose(bool disposing)
240 {
241 if (!this.disposed)
242 {
243 if (disposing)
244 {
245 if (m_Writer != null)
246 {
247 m_Writer.Close();
248 m_Writer = null;
249 }
250 }
251 }
252 this.disposed = true;
253 }
254
255 /// <summary>
256 ///
257 /// </summary>
258 ~Log()
259 {
260 this.Dispose(false);
261 }
262
263 /// <summary>
264 /// Closes and destroys this object
265 /// </summary>
266 /// <remarks>
267 /// Same as Dispose(true)
268 /// </remarks>
269 public void Close()
270 {
271 Dispose();
272 }
273
274 #endregion
275 }
276}