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;
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;
}
