trunk/RomCheater.Logging/LogWriter.cs

#define ALLOW_LOG_CLEARING // when defined will allow the log to be cleared
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace RomCheater.Logging
{
    public partial class LogWriter : UserControl
    {
        private delegate string OnGetLogText();
        private delegate void OnSetLogText(string value);
        private delegate void GenericVoidDelegate();

        private OnGetLogText HandleGetLogText = null;
        private OnSetLogText HandleSetLogText = null;
        private GenericVoidDelegate delegate_EndLogUpdate = null;

        public LogWriter() : this(false) { }
        public LogWriter(bool redirectConsole)
        {
            InitializeComponent();
            this.Log = new LogStream(this);
            HandleGetLogText += new OnGetLogText(GetLogText);
            HandleSetLogText += new OnSetLogText(SetLogText);

            delegate_EndLogUpdate += new GenericVoidDelegate(EndLogUpdate);

            this.RedirectConsoleOutput = redirectConsole;
            toolTip1.SetToolTip(btnClearLog, "Clears the Log");
            toolTip1.SetToolTip(btnCopyLogToClipboard, "Copies the Log to the Clipboard");
            ms = new MemoryStream();
            sw = new StreamWriter(ms);
            sw.AutoFlush = true;
            sr = new StreamReader(ms);
        }
        private LogStream _Log;
        public LogStream Log { get { return _Log; } private set { _Log = value;  } }


        private MemoryStream ms;
        private StreamWriter sw;
        private StreamReader sr;


        private bool _RedirectConsoleOutput;
        public bool RedirectConsoleOutput
        {
            get { return _RedirectConsoleOutput; }
            set
            {
                _RedirectConsoleOutput = value;
                if (value) { Console.SetOut(this.Log); } 
                else 
                {
                    Stream stream = Console.OpenStandardOutput(0x100);
                    TextWriter writer = null;
                    if (stream == Stream.Null) { writer = TextWriter.Synchronized(StreamWriter.Null); }
                    Encoding encoding = this.Log.Encoding;
                    StreamWriter writer2 = new StreamWriter(stream, encoding, 0x100);
                    //writer2.HaveWrittenPreamble = true;
                    writer2.AutoFlush = true;
                    writer = TextWriter.Synchronized(writer2);
                    Console.SetOut(writer); 
                }
            }
        }

        private void btnClearLog_Click(object sender, EventArgs e) { this.Clear(true); }
        private void btnCopyLogToClipboard_Click(object sender, EventArgs e) { Clipboard.SetText(GetLogText()); }


        private string PreserveLineEndings(string text) { return text.Replace("\n", System.Environment.NewLine); }


        private bool BeginUpdate;
        public void BeginLogUpdate()
        {
            BeginUpdate = true;
        }
        public void EndLogUpdate()
        {
            if (txtLog.InvokeRequired)
            {
                this.Invoke(delegate_EndLogUpdate);
            }
            else
            {
                StringReader _sr = new StringReader(GetLogText());
                List<string> lines = new List<string>();
                string line = "";
                while ((line = _sr.ReadLine()) != null)
                {
                    lines.Add(line);
                }
                txtLog.Lines = lines.ToArray();
                BeginUpdate = false;
            }
        }
        private string StreamToString()
        {
            string value = "";
            sr = new StreamReader(ms);
            sr.BaseStream.Seek(0, SeekOrigin.Begin);
            value = sr.ReadToEnd();
            return value;
        }
        public string GetLogText()
        {
            //if (txtLog.InvokeRequired)
            //{
            //    return (string)this.Invoke(HandleGetLogText, new object[] { });
            //}
            //else
            //{
            return PreserveLineEndings(StreamToString());
            //}

        }
        public void SetLogText(string value)
        {
            //if (txtLog.InvokeRequired)
            //{
            //    this.Invoke(HandleSetLogText, new object[] { value });
            //}
            //else
            //{
            //    txtLog.AppendText(value);
            //}
            sw.Write(value);
        }
        new public string Text
        {
            get
            {
                throw new InvalidOperationException("Please use GetLogText()");
            }
            private set
            {
                throw new InvalidOperationException("Please use SetLogText(string value)");
            }
        }

        public void Clear() 
        {
            Clear(false);
        }
        private void Clear(bool force)
        {
            bool allow_log_clearing = false;
#if ALLOW_LOG_CLEARING
            allow_log_clearing = true;
#endif
            if (force || allow_log_clearing)
            {
            
                txtLog.Clear();
                ms = new MemoryStream();
                sw = new StreamWriter(ms);
                sw.AutoFlush = true;
                sr = new StreamReader(ms);
            }
        }
        #region sub-classes
        public class LogStream : TextWriter
        {            
            public LogStream() : this(null) { }
            public LogStream(LogWriter text) : base() { _text_writer = text; this.NewLine = "\n"; }
            private LogWriter _text_writer;
            private void _write(string message) { if (_text_writer == null) return; _text_writer.SetLogText(string.Format("{0}", message)); }
            #region Overriden Methods
            public override Encoding Encoding { get { return Encoding.UTF8; } }
            public override void Write(char value) { base.Write(value); _write(value.ToString()); if (!_text_writer.BeginUpdate) _text_writer.EndLogUpdate(); }
            #endregion          
        }
        #endregion        
    }
}
Revision:	17
Committed:	Wed May 9 08:02:18 2012 UTC (11 years, 7 months ago) by william
File size:	6374 byte(s)
Log Message:	implement basic logging support
#	User	Rev	Content
1	william	17	#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
12			namespace RomCheater.Logging
13			{
14			public partial class LogWriter : UserControl
15			{
16			private delegate string OnGetLogText();
17			private delegate void OnSetLogText(string value);
18			private delegate void GenericVoidDelegate();
19
20			private OnGetLogText HandleGetLogText = null;
21			private OnSetLogText HandleSetLogText = null;
22			private GenericVoidDelegate delegate_EndLogUpdate = null;
23
24			public LogWriter() : this(false) { }
25			public LogWriter(bool redirectConsole)
26			{
27			InitializeComponent();
28			this.Log = new LogStream(this);
29			HandleGetLogText += new OnGetLogText(GetLogText);
30			HandleSetLogText += new OnSetLogText(SetLogText);
31
32			delegate_EndLogUpdate += new GenericVoidDelegate(EndLogUpdate);
33
34			this.RedirectConsoleOutput = redirectConsole;
35			toolTip1.SetToolTip(btnClearLog, "Clears the Log");
36			toolTip1.SetToolTip(btnCopyLogToClipboard, "Copies the Log to the Clipboard");
37			ms = new MemoryStream();
38			sw = new StreamWriter(ms);
39			sw.AutoFlush = true;
40			sr = new StreamReader(ms);
41			}
42			private LogStream _Log;
43			public LogStream Log { get { return _Log; } private set { _Log = value; } }
44
45
46			private MemoryStream ms;
47			private StreamWriter sw;
48			private StreamReader sr;
49
50
51			private bool _RedirectConsoleOutput;
52			public bool RedirectConsoleOutput
53			{
54			get { return _RedirectConsoleOutput; }
55			set
56			{
57			_RedirectConsoleOutput = value;
58			if (value) { Console.SetOut(this.Log); }
59			else
60			{
61			Stream stream = Console.OpenStandardOutput(0x100);
62			TextWriter writer = null;
63			if (stream == Stream.Null) { writer = TextWriter.Synchronized(StreamWriter.Null); }
64			Encoding encoding = this.Log.Encoding;
65			StreamWriter writer2 = new StreamWriter(stream, encoding, 0x100);
66			//writer2.HaveWrittenPreamble = true;
67			writer2.AutoFlush = true;
68			writer = TextWriter.Synchronized(writer2);
69			Console.SetOut(writer);
70			}
71			}
72			}
73
74			private void btnClearLog_Click(object sender, EventArgs e) { this.Clear(true); }
75			private void btnCopyLogToClipboard_Click(object sender, EventArgs e) { Clipboard.SetText(GetLogText()); }
76
77
78			private string PreserveLineEndings(string text) { return text.Replace("\n", System.Environment.NewLine); }
79
80
81			private bool BeginUpdate;
82			public void BeginLogUpdate()
83			{
84			BeginUpdate = true;
85			}
86			public void EndLogUpdate()
87			{
88			if (txtLog.InvokeRequired)
89			{
90			this.Invoke(delegate_EndLogUpdate);
91			}
92			else
93			{
94			StringReader _sr = new StringReader(GetLogText());
95			List<string> lines = new List<string>();
96			string line = "";
97			while ((line = _sr.ReadLine()) != null)
98			{
99			lines.Add(line);
100			}
101			txtLog.Lines = lines.ToArray();
102			BeginUpdate = false;
103			}
104			}
105			private string StreamToString()
106			{
107			string value = "";
108			sr = new StreamReader(ms);
109			sr.BaseStream.Seek(0, SeekOrigin.Begin);
110			value = sr.ReadToEnd();
111			return value;
112			}
113			public string GetLogText()
114			{
115			//if (txtLog.InvokeRequired)
116			//{
117			// return (string)this.Invoke(HandleGetLogText, new object[] { });
118			//}
119			//else
120			//{
121			return PreserveLineEndings(StreamToString());
122			//}
123
124			}
125			public void SetLogText(string value)
126			{
127			//if (txtLog.InvokeRequired)
128			//{
129			// this.Invoke(HandleSetLogText, new object[] { value });
130			//}
131			//else
132			//{
133			// txtLog.AppendText(value);
134			//}
135			sw.Write(value);
136			}
137			new public string Text
138			{
139			get
140			{
141			throw new InvalidOperationException("Please use GetLogText()");
142			}
143			private set
144			{
145			throw new InvalidOperationException("Please use SetLogText(string value)");
146			}
147			}
148
149			public void Clear()
150			{
151			Clear(false);
152			}
153			private void Clear(bool force)
154			{
155			bool allow_log_clearing = false;
156			#if ALLOW_LOG_CLEARING
157			allow_log_clearing = true;
158			#endif
159			if (force \|\| allow_log_clearing)
160			{
161
162			txtLog.Clear();
163			ms = new MemoryStream();
164			sw = new StreamWriter(ms);
165			sw.AutoFlush = true;
166			sr = new StreamReader(ms);
167			}
168			}
169			#region sub-classes
170			public class LogStream : TextWriter
171			{
172			public LogStream() : this(null) { }
173			public LogStream(LogWriter text) : base() { _text_writer = text; this.NewLine = "\n"; }
174			private LogWriter _text_writer;
175			private void _write(string message) { if (_text_writer == null) return; _text_writer.SetLogText(string.Format("{0}", message)); }
176			#region Overriden Methods
177			public override Encoding Encoding { get { return Encoding.UTF8; } }
178			public override void Write(char value) { base.Write(value); _write(value.ToString()); if (!_text_writer.BeginUpdate) _text_writer.EndLogUpdate(); }
179			#endregion
180			}
181			#endregion
182			}
183			}