/[RomCheater]/trunk/RomCheater.Logging/LogWriter.cs
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Contents of /trunk/RomCheater.Logging/LogWriter.cs

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Revision 64 - (show annotations) (download)
Wed May 9 16:35:07 2012 UTC (8 years, 6 months ago) by william
File size: 7354 byte(s)
modify user settings dialog

1 #define ALLOW_LOG_CLEARING // when defined will allow the log to be cleared
2 using System;
3 using System.Collections.Generic;
4 using System.ComponentModel;
5 using System.Drawing;
6 using System.Data;
7 using System.Linq;
8 using System.Text;
9 using System.Windows.Forms;
10 using System.IO;
11 using System.Reflection;
12
13 namespace RomCheater.Logging
14 {
15 public partial class LogWriter : UserControl
16 {
17 private static string LOG_PATH { get { return string.Format(@"{0}\{1}", typeof(LogWriter).Assembly.Location.Replace("RomCheater.Logging.dll", ""), LoggingConstants.AppLogFile); } }
18
19 private delegate string OnGetLogText();
20 private delegate void OnSetLogText(string value);
21 private delegate void GenericVoidDelegate();
22
23 private OnGetLogText HandleGetLogText = null;
24 private OnSetLogText HandleSetLogText = null;
25 private GenericVoidDelegate delegate_EndLogUpdate = null;
26
27 public LogWriter() : this(false) { }
28 public LogWriter(bool redirectConsole)
29 {
30 InitializeComponent();
31 this.Log = new LogStream(this);
32 HandleGetLogText += new OnGetLogText(GetLogText);
33 HandleSetLogText += new OnSetLogText(SetLogText);
34
35 delegate_EndLogUpdate += new GenericVoidDelegate(EndLogUpdate);
36
37 this.RedirectConsoleOutput = redirectConsole;
38 toolTip1.SetToolTip(btnClearLog, "Clears the Log");
39 toolTip1.SetToolTip(btnCopyLogToClipboard, "Copies the Log to the Clipboard");
40
41 ms = new MemoryStream();
42 sw = new StreamWriter(ms);
43 sw.AutoFlush = true;
44 sr = new StreamReader(ms);
45 }
46 private LogStream _Log;
47 public LogStream Log { get { return _Log; } private set { _Log = value; } }
48
49
50 private MemoryStream ms;
51 private StreamWriter sw;
52 private StreamReader sr;
53
54
55 private bool _RedirectConsoleOutput;
56 public bool RedirectConsoleOutput
57 {
58 get { return _RedirectConsoleOutput; }
59 set
60 {
61 _RedirectConsoleOutput = value;
62 if (value) { Console.SetOut(this.Log); }
63 else
64 {
65 Stream stream = Console.OpenStandardOutput(0x100);
66 TextWriter writer = null;
67 if (stream == Stream.Null) { writer = TextWriter.Synchronized(StreamWriter.Null); }
68 Encoding encoding = this.Log.Encoding;
69 StreamWriter writer2 = new StreamWriter(stream, encoding, 0x100);
70 //writer2.HaveWrittenPreamble = true;
71 writer2.AutoFlush = true;
72 writer = TextWriter.Synchronized(writer2);
73 Console.SetOut(writer);
74 }
75 }
76 }
77
78 private void btnClearLog_Click(object sender, EventArgs e) { this.Clear(true); }
79 private void btnCopyLogToClipboard_Click(object sender, EventArgs e) { Clipboard.SetText(GetLogText()); }
80
81
82 private string PreserveLineEndings(string text) { return text.Replace("\n", System.Environment.NewLine); }
83
84
85 private bool BeginUpdate;
86 public void BeginLogUpdate()
87 {
88 BeginUpdate = true;
89 }
90 public void EndLogUpdate()
91 {
92 if (txtLog.InvokeRequired)
93 {
94 this.Invoke(delegate_EndLogUpdate);
95 }
96 else
97 {
98 StringReader _sr = new StringReader(GetLogText());
99 List<string> lines = new List<string>();
100 string line = "";
101 while ((line = _sr.ReadLine()) != null)
102 {
103 lines.Add(line);
104 }
105 txtLog.Lines = lines.ToArray();
106 BeginUpdate = false;
107 }
108 }
109 private string StreamToString()
110 {
111 string value = "";
112 sr = new StreamReader(ms);
113 sr.BaseStream.Seek(0, SeekOrigin.Begin);
114 value = sr.ReadToEnd();
115 return value;
116 }
117 public string GetLogText()
118 {
119 //if (txtLog.InvokeRequired)
120 //{
121 // return (string)this.Invoke(HandleGetLogText, new object[] { });
122 //}
123 //else
124 //{
125 return PreserveLineEndings(StreamToString());
126 //}
127
128 }
129 public void SetLogText(string value)
130 {
131 //if (txtLog.InvokeRequired)
132 //{
133 // this.Invoke(HandleSetLogText, new object[] { value });
134 //}
135 //else
136 //{
137 // txtLog.AppendText(value);
138 //}
139 FileStream fs = new FileStream(LOG_PATH, FileMode.Append, FileAccess.Write, FileShare.ReadWrite);
140 StreamWriter writer = new StreamWriter(fs);
141 writer.AutoFlush = true;
142 if (value == Log.NewLine) { writer.Write(System.Environment.NewLine); }
143 else { writer.Write(value); }
144 writer.Close();
145 sw.Write(value);
146 }
147 new public string Text
148 {
149 get
150 {
151 throw new InvalidOperationException("Please use GetLogText()");
152 }
153 private set
154 {
155 throw new InvalidOperationException("Please use SetLogText(string value)");
156 }
157 }
158 public void CreateNewLog(bool delete)
159 {
160 if (delete)
161 {
162 FileInfo fi = new FileInfo(LOG_PATH);
163 if (fi.Exists)
164 fi.Delete();
165 }
166 Log.WriteLine("{0} ({2} v{3} {4}) created on {1}", LoggingConstants.AppLogFile, DateTime.Now.ToString(), LoggingConstants.AppName, LoggingConstants.AppVersion, LoggingConstants.AppBuild);
167 }
168 public void Clear()
169 {
170 Clear(false);
171 }
172 private void Clear(bool force)
173 {
174 bool allow_log_clearing = false;
175 #if ALLOW_LOG_CLEARING
176 allow_log_clearing = true;
177 #endif
178 if (force || allow_log_clearing)
179 {
180
181 txtLog.Clear();
182 ms = new MemoryStream();
183 sw = new StreamWriter(ms);
184 sw.AutoFlush = true;
185 sr = new StreamReader(ms);
186 }
187 }
188 #region sub-classes
189 public class LogStream : TextWriter
190 {
191 public LogStream() : this(null) { }
192 public LogStream(LogWriter text) : base() { _text_writer = text; this.NewLine = "\n"; }
193 private LogWriter _text_writer;
194 private void _write(string message) { if (_text_writer == null) return; _text_writer.SetLogText(string.Format("{0}", message)); }
195 #region Overriden Methods
196 public override Encoding Encoding { get { return Encoding.UTF8; } }
197 public override void Write(char value) { base.Write(value); _write(value.ToString()); if (!_text_writer.BeginUpdate) _text_writer.EndLogUpdate(); }
198 #endregion
199 }
200 #endregion
201 }
202 }

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