static List <Tuple <string, DateTime> > GetFilenamesAndDates(string filenamePath, IFilenameDateParser filenameParser)
{
string _dir = System.IO.Path.GetDirectoryName(filenamePath);
string _fnPattern = System.IO.Path.GetFileName(filenamePath);
// add in new parser classes for different file formats
List <string> _files = System.IO.Directory.GetFiles(_dir, _fnPattern).ToList();
List <Tuple <string, DateTime> > _fileDates =
_files.Select(fn => new Tuple <string, DateTime?>(fn, filenameParser.TryParseFilenameDate(fn)))
.Where(tpl => tpl.Item2.HasValue)
.Select(tpl => new Tuple <string, DateTime>(tpl.Item1, tpl.Item2.Value))
.ToList();
// sort the list of filename/date pairs by date
_fileDates.Sort((x, y) => x.Item2.CompareTo(y.Item2));
return(_fileDates);
}
/// <summary>
/// Parse the dates for all files matching the given wildcard, filter to only include those within the
/// requested date range if one has been set on this reader, and store the dates against the
/// filenames in a sorted (by date) list of key value pairs date:filename
/// </summary>
private void PopulateFilenamesAndDates()
{
string _dir = System.IO.Path.GetDirectoryName(m_FileWildCard);
string _fnPattern = System.IO.Path.GetFileName(m_FileWildCard);
string[] _files = System.IO.Directory.GetFiles(_dir, _fnPattern);
m_FileDates = new SortedList <DateTime, string> (_files
.Select(fn => new KeyValuePair <DateTime?, string>(m_FilenameDateParser.TryParseFilenameDate(fn), fn))
.Where(kvp => kvp.Key.HasValue)
.Select(kvp => new KeyValuePair <DateTime, string>(kvp.Key.Value, kvp.Value))
.Where(kvp => !m_MinDateToRead.HasValue || kvp.Key >= m_MinDateToRead)
.Where(kvp => !m_MaxDateToRead.HasValue || kvp.Key <= m_MaxDateToRead)
.ToDictionary(kvp => kvp.Key, kvp => kvp.Value)
);
}