public static RepositoryFilter ReverseFilter <F>(this IEnumerable <F> files) where F : IFTPFile
{
// uf ano mes
Regex regFilter = new Regex(@"^(?<nome>[a-z]+)(?<uf>[a-z]{2})(?<ano>\d{2})(?<mes>\d{2})?\.\w{2,3}$", RegexOptions.IgnoreCase);
var matches = files.Select(f => new FilteredItem(f.Name.ToUpper(), regFilter.Match(f.Name))).ToArray();
var filter = new RepositoryFilter();
filter.Unmatched = matches.Where(m => !m.Match.Success).Select(m => m.Name).ToArray();
matches = matches.Where(m => m.Match.Success).ToArray();
int[] ivalues = matches.Where(m => m.Match.Groups["mes"].Success).Select(m => int.Parse(m.Match.Groups["mes"].Value)).Distinct().ToArray();
Array.Sort(ivalues);
filter.Months = ivalues;
ivalues = matches.Select(m => getYear(m.Match.Groups["ano"].Value)).Distinct().ToArray();
//Array.Sort(ivalues);
filter.MinYear = ivalues.Min();
filter.MaxYear = ivalues.Max();
string[] svalues = matches.Select(m => m.Match.Groups["nome"].Value.ToUpper()).Distinct().ToArray();
Array.Sort(svalues);
filter.Prefixes = svalues;
svalues = matches.Select(m => m.Match.Groups["uf"].Value.ToUpper()).Distinct().ToArray();
Array.Sort(svalues);
filter.UFs = svalues;
filter.FilteredItems = matches;
return(filter);
}
public static IEnumerable <F> ApplyFilter <F>(this IEnumerable <F> files, RepositoryFilter filter) where F : IFTPFile
{
if (filter == null || files == null || files.Count() == 0)
{
return(files);
}
var names = files.Select(f => f.Name);
string pattern = "";
if (filter.Prefixes?.Any() == true)
{
pattern += "(" + string.Join("|", filter.Prefixes) + ")";
}
else
{
pattern += "([a-z]+)";
}
// uf ano mes
if (filter.UFs?.Any() == true)
{
pattern += "(" + string.Join("|", filter.UFs) + ")";
}
else
{
pattern += "([a-z]{2})";
}
if (filter.GetYears()?.Any() == true)
{
pattern += "(" + string.Join("|", filter.GetYears().Select(y => getNumber(y)).ToArray()) + ")";
}
else
{
pattern += @"(\d{2})";
}
if (filter.Months?.Any() == true)
{
pattern += "(" + string.Join("|", filter.Months.Select(m => getNumber(m)).ToArray()) + ")";
}
else
{
pattern += @"(\d{2})?";
}
pattern = "^" + pattern + @"\.\w{2,3}$";
Regex regex = new Regex(pattern, RegexOptions.IgnoreCase);
names = names.Where(n => regex.IsMatch(n)).ToArray();
return((from f in files join n in names on f.Name equals n select f).ToArray());
}
public void DownloadOrUpdate(LocalRepository rep, RepositoryFilter filter)
{
}
public FileFilterParameters(RepositoryFilter filter)
{
_filter = filter;
}
public FileFilterParameters()
{
_filter = new RepositoryFilter();
}
