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
    {
        public 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:	20
Committed:	Wed May 9 08:41:36 2012 UTC (11 years, 6 months ago) by william
File size:	6969 byte(s)
Log Message:	+ add support to log startup message
#	Content
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
12	namespace RomCheater.Logging
13	{
14	public partial class LogWriter : UserControl
15	{
16	public const string LOG_FILE = "RomCheater.log";
17	private static string LOG_PATH = string.Format(@"{0}\{1}", Application.StartupPath, LOG_FILE);
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	FileInfo fi = new FileInfo(LOG_PATH);
47	if (fi.Exists)
48	fi.Delete();
49
50	}
51	private LogStream _Log;
52	public LogStream Log { get { return _Log; } private set { _Log = value; } }
53
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	if (value) { Console.SetOut(this.Log); }
68	else
69	{
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	Console.SetOut(writer);
79	}
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	FileStream fs = new FileStream(LOG_PATH, FileMode.Append, FileAccess.Write, FileShare.ReadWrite);
145	StreamWriter writer = new StreamWriter(fs);
146	writer.AutoFlush = true;
147	if (value == Log.NewLine) { writer.Write(System.Environment.NewLine); }
148	else { writer.Write(value); }
149	writer.Close();
150	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	public void Clear()
165	{
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
177	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	{
187	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	#endregion
195	}
196	#endregion
197	}
198	}