public LiveJournalReader(FileInfo file, IJournalParser parser)
{
File = file;
_parser = parser;
Context = new JournalLogFileInfo(File);
}
public LogJournalReader(FileInfo file, IJournalParser parser)
{
File = file;
_parser = parser;
_stream = new Lazy <StreamReader>(GetStreamReader);
Context = ReadFileInfo();
}
public JournalEntry(JournalLogFileInfo context, IJournalEntry journalEntry)
{
Context = context;
Entry = journalEntry;
}
public JournalLine(JournalLogFileInfo context, string line)
{
Context = context;
Line = line;
}
private JournalLogFileInfo ReadFileInfo()
{
FileHeader fileHeader = null;
var info = new JournalLogFileInfo(File);
DateTimeOffset?lastEntry = null;
try
{
// Get a new reader for this action only
using (var streamReader = GetStreamReader())
{
// FileHeader *should* be the first line in the file, but at least try the first 5
var tolerance = 5;
while (!streamReader.EndOfStream && tolerance > 0 && fileHeader == null)
{
var line = streamReader.ReadLine();
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
try
{
var(eventType, timestamp) = _parser.ParseCommonProperties(line);
if (timestamp > (lastEntry ?? DateTimeOffset.MinValue))
{
lastEntry = timestamp;
}
if (eventType?.Equals(nameof(FileHeader), StringComparison.InvariantCultureIgnoreCase) == true)
{
fileHeader = _parser.Parse <FileHeader>(line);
}
}
catch (JournalParseException)
{
// Cannot parse line, don't consider as potential fileheader
}
tolerance--;
}
}
if (fileHeader != null)
{
info = new JournalLogFileInfo(File, fileHeader.GameVersion, fileHeader.Timestamp, lastEntry ?? fileHeader.Timestamp);
}
}
catch (FileNotFoundException e)
{
Log.Error($"Could not read file '{e.FileName}'", e);
}
catch (IOException e)
{
Log.Error($"Could not read file '{File.FullName}'", e);
}
return(info);
}
