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 const string LOG_FILE = "RomCheater.log";
        private static string LOG_PATH = string.Format(@"{0}\{1}", Application.StartupPath, LOG_FILE);

        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);

            FileInfo fi = new FileInfo(LOG_PATH);
            if (fi.Exists)
                fi.Delete();

        }
        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);
            //}
            FileStream fs = new FileStream(LOG_PATH, FileMode.Append, FileAccess.Write, FileShare.ReadWrite);
            StreamWriter writer = new StreamWriter(fs);
            writer.AutoFlush = true;
            if (value == Log.NewLine) { writer.Write(System.Environment.NewLine); }
            else { writer.Write(value); }
            writer.Close();
            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:	19
Committed:	Wed May 9 08:22:41 2012 UTC (10 years, 10 months ago) by william
File size:	6970 byte(s)
Log Message:	fix newline logging support when writing to file
#	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	william	18	private const string LOG_FILE = "RomCheater.log";
17			private static string LOG_PATH = string.Format(@"{0}\{1}", Application.StartupPath, LOG_FILE);
18
19	william	17	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	william	18
41	william	17	ms = new MemoryStream();
42			sw = new StreamWriter(ms);
43			sw.AutoFlush = true;
44			sr = new StreamReader(ms);
45	william	18
46			FileInfo fi = new FileInfo(LOG_PATH);
47			if (fi.Exists)
48			fi.Delete();
49
50	william	17	}
51			private LogStream _Log;
52	william	18	public LogStream Log { get { return _Log; } private set { _Log = value; } }
53	william	17
54
55			private MemoryStream ms;
56			private StreamWriter sw;
57			private StreamReader sr;
58
59
60			private bool _RedirectConsoleOutput;
61			public bool RedirectConsoleOutput
62			{
63			get { return _RedirectConsoleOutput; }
64			set
65			{
66			_RedirectConsoleOutput = value;
67	william	18	if (value) { Console.SetOut(this.Log); }
68			else
69	william	17	{
70			Stream stream = Console.OpenStandardOutput(0x100);
71			TextWriter writer = null;
72			if (stream == Stream.Null) { writer = TextWriter.Synchronized(StreamWriter.Null); }
73			Encoding encoding = this.Log.Encoding;
74			StreamWriter writer2 = new StreamWriter(stream, encoding, 0x100);
75			//writer2.HaveWrittenPreamble = true;
76			writer2.AutoFlush = true;
77			writer = TextWriter.Synchronized(writer2);
78	william	18	Console.SetOut(writer);
79	william	17	}
80			}
81			}
82
83			private void btnClearLog_Click(object sender, EventArgs e) { this.Clear(true); }
84			private void btnCopyLogToClipboard_Click(object sender, EventArgs e) { Clipboard.SetText(GetLogText()); }
85
86
87			private string PreserveLineEndings(string text) { return text.Replace("\n", System.Environment.NewLine); }
88
89
90			private bool BeginUpdate;
91			public void BeginLogUpdate()
92			{
93			BeginUpdate = true;
94			}
95			public void EndLogUpdate()
96			{
97			if (txtLog.InvokeRequired)
98			{
99			this.Invoke(delegate_EndLogUpdate);
100			}
101			else
102			{
103			StringReader _sr = new StringReader(GetLogText());
104			List<string> lines = new List<string>();
105			string line = "";
106			while ((line = _sr.ReadLine()) != null)
107			{
108			lines.Add(line);
109			}
110			txtLog.Lines = lines.ToArray();
111			BeginUpdate = false;
112			}
113			}
114			private string StreamToString()
115			{
116			string value = "";
117			sr = new StreamReader(ms);
118			sr.BaseStream.Seek(0, SeekOrigin.Begin);
119			value = sr.ReadToEnd();
120			return value;
121			}
122			public string GetLogText()
123			{
124			//if (txtLog.InvokeRequired)
125			//{
126			// return (string)this.Invoke(HandleGetLogText, new object[] { });
127			//}
128			//else
129			//{
130			return PreserveLineEndings(StreamToString());
131			//}
132
133			}
134			public void SetLogText(string value)
135			{
136			//if (txtLog.InvokeRequired)
137			//{
138			// this.Invoke(HandleSetLogText, new object[] { value });
139			//}
140			//else
141			//{
142			// txtLog.AppendText(value);
143			//}
144	william	18	FileStream fs = new FileStream(LOG_PATH, FileMode.Append, FileAccess.Write, FileShare.ReadWrite);
145			StreamWriter writer = new StreamWriter(fs);
146			writer.AutoFlush = true;
147	william	19	if (value == Log.NewLine) { writer.Write(System.Environment.NewLine); }
148			else { writer.Write(value); }
149	william	18	writer.Close();
150	william	17	sw.Write(value);
151			}
152			new public string Text
153			{
154			get
155			{
156			throw new InvalidOperationException("Please use GetLogText()");
157			}
158			private set
159			{
160			throw new InvalidOperationException("Please use SetLogText(string value)");
161			}
162			}
163
164	william	18	public void Clear()
165	william	17	{
166			Clear(false);
167			}
168			private void Clear(bool force)
169			{
170			bool allow_log_clearing = false;
171			#if ALLOW_LOG_CLEARING
172			allow_log_clearing = true;
173			#endif
174			if (force \|\| allow_log_clearing)
175			{
176	william	18
177	william	17	txtLog.Clear();
178			ms = new MemoryStream();
179			sw = new StreamWriter(ms);
180			sw.AutoFlush = true;
181			sr = new StreamReader(ms);
182			}
183			}
184			#region sub-classes
185			public class LogStream : TextWriter
186	william	18	{
187	william	17	public LogStream() : this(null) { }
188			public LogStream(LogWriter text) : base() { _text_writer = text; this.NewLine = "\n"; }
189			private LogWriter _text_writer;
190			private void _write(string message) { if (_text_writer == null) return; _text_writer.SetLogText(string.Format("{0}", message)); }
191			#region Overriden Methods
192			public override Encoding Encoding { get { return Encoding.UTF8; } }
193			public override void Write(char value) { base.Write(value); _write(value.ToString()); if (!_text_writer.BeginUpdate) _text_writer.EndLogUpdate(); }
194	william	18	#endregion
195	william	17	}
196	william	18	#endregion
197	william	17	}
198			}