public CachedFile([NotNull] FileInfo backingFile, bool? requireToExistAlready = null)
{
_backingFile = backingFile;
if (!_backingFile.Exists)
{
if (requireToExistAlready == true)
throw new FileNotFoundException("Data file not found.", _backingFile.FullName);
_backingFile.CreateText().Close();
}
else if (requireToExistAlready == false)
{
throw new FileNotFoundException("Expected to create new data file, but file already exists.", _backingFile.FullName);
}
_dataState = _DataState.FileIsCanonical;
}
private string _EnsureMemoryCacheIsUpToDate()
{
lock (_fileLock)
{
if (_dataState != _DataState.FileIsCanonical)
{
return(_cachedValue);
}
using (var reader = _backingFile.OpenText())
{
_cachedValue = reader.ReadToEnd();
}
_dataState = _DataState.Synchronized;
return(_cachedValue);
}
}
public CachedFile([NotNull] FileInfo backingFile, bool?requireToExistAlready = null)
{
_backingFile = backingFile;
if (!_backingFile.Exists)
{
if (requireToExistAlready == true)
{
throw new FileNotFoundException("Data file not found.", _backingFile.FullName);
}
_backingFile.CreateText().Close();
}
else if (requireToExistAlready == false)
{
throw new FileNotFoundException("Expected to create new data file, but file already exists.", _backingFile.FullName);
}
_dataState = _DataState.FileIsCanonical;
}
private string _EnsureMemoryCacheIsUpToDate()
{
lock (_fileLock)
{
if (_dataState != _DataState.FileIsCanonical)
return _cachedValue;
using (var reader = _backingFile.OpenText())
{
_cachedValue = reader.ReadToEnd();
}
_dataState = _DataState.Synchronized;
return _cachedValue;
}
}
