public int FillCache(LogFileStream logFileStream, int endindex)
{
if (endindex > FirstIndex + Items.Count)
return -1;
int lastItem = Items.Count - 1;
for (int i = 0; i < Items.Count; i++)
{
if (FirstIndex + i > endindex)
{
lastItem = i - 1;
break;
}
if (Items[i] != null)
continue; // Already cached
if (i == 0)
{
// We are filling the cache
if (FillCacheEvent != null)
FillCacheEvent(this, null);
}
string line = logFileStream.ReadLine(FirstIndex + i + 1);
if (line == null)
{
lastItem = i - 1;
break;
}
Items[i] = new ListViewItem(line);
Items[i].SubItems.Add("");
}
// We are done filling the cache
if (FillCacheEvent != null)
FillCacheEvent(null, null);
if (lastItem != Items.Count - 1)
return lastItem;
else
return Items.Count - 1;
}
public void LoadConfig(TailFileConfig tailConfig, string configPath)
{
_configPath = configPath;
try
{
new DirectoryInfo(Path.GetDirectoryName(Path.Combine(configPath, tailConfig.FilePath)));
}
catch (System.ArgumentException ex)
{
MessageBox.Show(this, String.Format("Failed to open file:\n\n{0}\n\nError:{1}", tailConfig.FilePath, ex.Message), "Invalid filename", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
Close();
return;
}
if (tailConfig.FileCacheSize <= 0)
tailConfig.FileCacheSize = 1000;
if (tailConfig.FormBackColor != null)
_tailListView.BackColor = tailConfig.FormBackColor.Value;
if (tailConfig.FormTextColor != null)
_tailListView.ForeColor = tailConfig.FormTextColor.Value;
if (tailConfig.FormFont != null)
_tailListView.Font = tailConfig.FormFont;
if (tailConfig.FormBookmarkBackColor != null)
_bookmarkBackColor = tailConfig.FormBookmarkBackColor.Value;
if (tailConfig.FormBookmarkTextColor != null)
_bookmarkTextColor = tailConfig.FormBookmarkTextColor.Value;
if (tailConfig.FileChangeCheckInterval > 0)
_tailTimer.Interval = tailConfig.FileChangeCheckInterval;
_externalTools = tailConfig.ExternalTools;
externalToolsToolStripMenuItem.DropDownItems.Clear();
externalToolsToolStripMenuItem.Enabled = false;
if (_externalTools != null)
{
foreach (ExternalToolConfig externalTool in _externalTools)
{
ToolStripMenuItem toolItem = externalToolsToolStripMenuItem.DropDownItems.Add(externalTool.Name) as ToolStripMenuItem;
if (toolItem != null)
{
toolItem.Tag = externalTool;
toolItem.Click += new EventHandler(externalToolMenuItem_Click);
if (externalTool.ShortcutKeyEnum.HasValue)
toolItem.ShortcutKeys = externalTool.ShortcutKeyEnum.Value;
}
externalToolsToolStripMenuItem.Enabled = true;
}
}
_loghitCounter = -1;
_keywordHighlight = tailConfig.KeywordHighlight;
if (_keywordHighlight != null)
{
foreach (TailKeywordConfig keyword in _keywordHighlight)
{
if (keyword.MatchRegularExpression)
{
if (keyword.MatchCaseSensitive)
keyword.KeywordRegex = new System.Text.RegularExpressions.Regex(keyword.Keyword);
else
keyword.KeywordRegex = new System.Text.RegularExpressions.Regex(keyword.Keyword, System.Text.RegularExpressions.RegexOptions.IgnoreCase);
}
else
keyword.KeywordRegex = null;
if (keyword.LogHitCounter)
_loghitCounter = 0;
if (!string.IsNullOrEmpty(keyword.ExternalToolName))
{
keyword.ExternalToolConfig = _externalTools.Find((externalTool) => string.Compare(externalTool.Name, keyword.ExternalToolName) == 0);
if (_threadPoolQueue == null)
_threadPoolQueue = new ThreadPoolQueue(); // Prepare the threadpool for use
}
}
}
Encoding fileEncoding = tailConfig.EnumFileEncoding;
if (_logTailStream != null)
_logTailStream.Reset();
if (_logFileStream == null || _logFileStream.FilePath != tailConfig.FilePath || _logFileStream.FileEncoding != fileEncoding || _logFileStream.FileCheckInterval != tailConfig.FileCheckInterval || _logFileStream.FileCheckPattern != tailConfig.FileCheckPattern)
{
if (_logFileStream != null)
_logFileStream.Dispose();
_logFileStream = new LogFileStream(configPath, tailConfig.FilePath, fileEncoding, tailConfig.FileCheckInterval, tailConfig.FileCheckPattern);
}
if (_logTailStream == null || _logTailStream.FilePath != tailConfig.FilePath || _logTailStream.FileEncoding != fileEncoding || _logTailStream.FileCheckInterval != tailConfig.FileCheckInterval || _logTailStream.FileCheckPattern != tailConfig.FileCheckPattern)
{
if (_logTailStream != null)
_logTailStream.Dispose();
_logTailStream = new LogFileStream(configPath, tailConfig.FilePath, fileEncoding, tailConfig.FileCheckInterval, tailConfig.FileCheckPattern);
if (_logTailStream.Length > 500 * 1024 * 1024)
{
if (MessageBox.Show(this, String.Format("The file is very large, sure you want to open it?\n\nFile Name: {0}\nFile Size: {1} Megabytes", _logTailStream.FilePath, _logTailStream.Length / 1024 / 1024), "Large file detected", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.No)
{
Close();
return;
}
}
if (_logFileCache != null)
{
_logFileCache.Reset();
_logFileCache = null; // Reset Cache, as the file contents can have changed
}
}
_logTailStream.FileReloadedEvent += new EventHandler(_logTailStream_FileReloadedEvent);
if (_logFileCache != null)
_logFileCache.Reset();
if (_logFileCache == null || _logFileCache.Items.Count != tailConfig.FileCacheSize)
{
_logFileCache = new LogFileCache(tailConfig.FileCacheSize);
_logFileCache.LoadingFileEvent += new EventHandler(_logFileCache_LoadingFileEvent);
_logFileCache.FillCacheEvent += new EventHandler(_logFileCache_FillCacheEvent);
// Add loading of cache while counting lines in file
int lineCount = _logFileCache.FillTailCache(_logTailStream);
_tailListView.VirtualListSize = lineCount;
}
else
{
_logFileCache.LoadingFileEvent += new EventHandler(_logFileCache_LoadingFileEvent);
_logFileCache.FillCacheEvent += new EventHandler(_logFileCache_FillCacheEvent);
}
if (_taskMonitor != null)
{
_taskMonitor.Dispose();
_taskMonitor = null;
}
if (!string.IsNullOrEmpty(tailConfig.ServiceName))
_taskMonitor = new TaskMonitor(tailConfig.ServiceName);
_formTitleMatchFilename = tailConfig.TitleMatchFilename;
if (_formTitleMatchFilename)
_formTitle = Path.GetFileName(_logTailStream.Name);
else
if (tailConfig.Title != null)
_formTitle = tailConfig.Title;
else
_formTitle = Path.GetFileName(tailConfig.FilePath);
UpdateFormTitle(true);
_displayTabIcon = tailConfig.DisplayTabIcon;
if (!string.IsNullOrEmpty(tailConfig.IconFile))
{
_formIconFile = tailConfig.IconFile;
string formIconFilePathAbsolute = System.IO.Path.Combine(configPath, _formIconFile);
try
{
_formCustomIcon = System.Drawing.Icon.ExtractAssociatedIcon(formIconFilePathAbsolute);
_formMaximizedIcon = Icon;
Icon = _formCustomIcon;
}
catch (Exception ex)
{
MessageBox.Show(this, "Failed to load icon\n\n " + formIconFilePathAbsolute + "\n\n" + ex.Message, null, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
UpdateFormTitle(true);
if (Visible)
{
if (_tailListView.VirtualListSize > 0)
{
_tailListView.EnsureVisible(_tailListView.VirtualListSize - 1);
_tailListView.FocusedItem = _tailListView.Items[_tailListView.VirtualListSize - 1];
_tailListView.SelectedIndices.Add(_tailListView.VirtualListSize - 1);
_tailListView.Invalidate();
_tailListView.Update();
}
}
}
public void CheckLogFile(bool forceReload)
{
_lastFileCheck = DateTime.Now;
try
{
// Refreshes the directory of the file, to ensure that we see the latest changes
// If the directory is on a network share, then this can be a long blocking operation
if (_threadPool != null)
{
_threadPool.CheckResult();
}
DirectoryInfo dirInfo = null;
try
{
dirInfo = new DirectoryInfo(Path.GetDirectoryName(_filePathAbsolute));
}
catch (System.ArgumentException ex)
{
// Any problems with the path should also be detected with the synchronous LoadFile-check
System.Diagnostics.Debug.WriteLine("Failed to refresh directory path: " + ex.Message);
}
catch (System.Security.SecurityException ex)
{
// Any problems with the path should also be detected with the synchronous LoadFile-check
System.Diagnostics.Debug.WriteLine("Failed to access directory path: " + ex.Message);
}
catch (System.IO.IOException ex)
{
// Any problems with the path should also be detected with the synchronous LoadFile-check
System.Diagnostics.Debug.WriteLine("Failed to read directory path: " + ex.Message);
}
if (dirInfo != null && _threadPool != null)
{
_threadPool.ExecuteRequest(RefreshDirectoryInfo, dirInfo);
}
}
catch (ApplicationException ex)
{
// Any problems with the path should also be detected with the synchronous LoadFile-check
System.Diagnostics.Debug.WriteLine(ex.Message);
}
if (_fileStream == null || forceReload)
{
LoadFile(_filePathAbsolute, _fileEncoding, _fileCheckPattern);
if (_fileStream != null || forceReload)
{
if (FileReloadedEvent != null)
{
FileReloadedEvent(this, null);
}
}
}
else
{
string configPath = Path.GetDirectoryName(_filePathAbsolute);
bool fileChanged = false;
long fileCheckLength = 0;
using (LogFileStream testLogFile = new LogFileStream(configPath, _filePathAbsolute, _fileEncoding, _fileCheckFrequency.Seconds, _fileCheckPattern))
{
fileCheckLength = testLogFile.Length;
long currentFileLength = Length;
string name = testLogFile._fileStream != null ? testLogFile._fileStream.Name : null;
if (fileCheckLength < currentFileLength)
{
fileChanged = true;
}
else if (Position > fileCheckLength)
{
fileChanged = true;
}
else if (_fileStream.Name != name)
{
fileChanged = true;
}
else if (_lastFileCheckLength <= fileCheckLength && _lastFileCheckLength > currentFileLength)
{
fileChanged = true;
}
}
if (fileChanged)
{
// The file have been renamed / deleted (reload new file)
LoadFile(_filePathAbsolute, _fileEncoding, _fileCheckPattern);
if (FileReloadedEvent != null)
{
FileReloadedEvent(this, null);
}
}
_lastFileCheckLength = fileCheckLength;
}
}
public void CheckLogFile(bool forceReload)
{
_lastFileCheck = DateTime.Now;
try
{
// Refreshes the directory of the file, to ensure that we see the latest changes
// If the directory is on a network share, then this can be a long blocking operation
if (_threadPool != null)
_threadPool.CheckResult();
DirectoryInfo dirInfo = null;
try
{
dirInfo = new DirectoryInfo(Path.GetDirectoryName(_filePathAbsolute));
}
catch (System.ArgumentException ex)
{
// Any problems with the path should also be detected with the synchronous LoadFile-check
System.Diagnostics.Debug.WriteLine("Failed to refresh directory path: " + ex.Message);
}
catch (System.Security.SecurityException ex)
{
// Any problems with the path should also be detected with the synchronous LoadFile-check
System.Diagnostics.Debug.WriteLine("Failed to access directory path: " + ex.Message);
}
catch (System.IO.IOException ex)
{
// Any problems with the path should also be detected with the synchronous LoadFile-check
System.Diagnostics.Debug.WriteLine("Failed to read directory path: " + ex.Message);
}
if (dirInfo != null && _threadPool != null)
_threadPool.ExecuteRequest(RefreshDirectoryInfo, dirInfo);
}
catch (ApplicationException ex)
{
// Any problems with the path should also be detected with the synchronous LoadFile-check
System.Diagnostics.Debug.WriteLine(ex.Message);
}
if (_fileStream == null || forceReload)
{
LoadFile(_filePathAbsolute, _fileEncoding, _fileCheckPattern);
if (_fileStream != null || forceReload)
{
if (FileReloadedEvent != null)
FileReloadedEvent(this, null);
}
}
else
{
string configPath = Path.GetDirectoryName(_filePathAbsolute);
bool fileChanged = false;
long fileCheckLength = 0;
using (LogFileStream testLogFile = new LogFileStream(configPath, _filePathAbsolute, _fileEncoding, _fileCheckFrequency.Seconds, _fileCheckPattern))
{
fileCheckLength = testLogFile.Length;
string name = testLogFile._fileStream != null ? testLogFile._fileStream.Name : null;
if (fileCheckLength < Length)
fileChanged = true;
else if (Position > fileCheckLength)
fileChanged = true;
else if (_fileStream.Name != name)
fileChanged = true;
else if (_lastFileCheckLength <= fileCheckLength && _lastFileCheckLength > Length)
fileChanged = true;
}
if (fileChanged)
{
// The file have been renamed / deleted (reload new file)
LoadFile(_filePathAbsolute, _fileEncoding, _fileCheckPattern);
if (FileReloadedEvent != null)
FileReloadedEvent(this, null);
}
_lastFileCheckLength = fileCheckLength;
}
}
public int FillTailCache(LogFileStream logFileStream)
{
int lineCount = 0;
int readLines = 0;
// Quickly fast forward to near the file bottom
do
{
readLines = lineCount;
lineCount = logFileStream.SkipLines(Items.Count);
readLines = lineCount - readLines;
if (LoadingFileEvent != null)
LoadingFileEvent(logFileStream, null);
} while (readLines == Items.Count);
// We are almost finished with loading the file
if (LoadingFileEvent != null)
LoadingFileEvent(null, null);
if (lineCount <= 0)
return 0;
// Read the last lines of the file into the cache
bool continueReading = false;
PrepareCache(lineCount, lineCount, true);
do
{
int lastCacheIndex = FillCache(logFileStream, FirstIndex + Items.Count);
System.Diagnostics.Debug.Assert(lastCacheIndex != -1 || logFileStream.Length == 0);
continueReading = (lastCacheIndex == Items.Count - 1);
lineCount = FirstIndex + lastCacheIndex + 1;
if (continueReading)
PrepareCache(lineCount + Items.Count / 2, lineCount + Items.Count / 2, true);
} while (continueReading);
return lineCount;
}
public int FillTailCache(LogFileStream logFileStream)
{
int lineCount = 0;
// Quickly fast forward to near the file bottom
if (!logFileStream.CloseToEnd(Items.Count))
{
do
{
if (logFileStream.ReadLine(lineCount + 1) != null)
lineCount++;
// We have read a good part of the file
if (lineCount % Items.Count == 0)
{
if (LoadingFileEvent != null)
LoadingFileEvent(logFileStream, null);
}
}
while (!logFileStream.CloseToEnd(Items.Count));
// We are almost finished with loading the file
if (LoadingFileEvent != null)
LoadingFileEvent(null, null);
}
// Read the last lines of the file into the cache
bool continueReading = false;
PrepareCache(lineCount, lineCount, true);
do
{
int lastCacheIndex = FillCache(logFileStream, FirstIndex + Items.Count);
System.Diagnostics.Debug.Assert(lastCacheIndex != -1 || logFileStream.Length == 0);
continueReading = (lastCacheIndex == Items.Count - 1);
lineCount = FirstIndex + lastCacheIndex + 1;
if (continueReading)
PrepareCache(lineCount + Items.Count / 2, lineCount + Items.Count / 2, true);
} while (continueReading);
return lineCount;
}