protected IEnumerable <U> ReadFile <U>(string path, ICSVRecordParser <U> parser)
where U : IIPRangeCountry
{
if (IsZIP(path))
{
using (var zipArchive = new ZipArchive(File.OpenRead(path), ZipArchiveMode.Read))
{
foreach (var entry in zipArchive.Entries)
{
foreach (var r in Read(entry.Open(), parser))
{
yield return(r);
}
}
}
}
else if (IsGZ(path))
{
using (var s = File.OpenRead(path))
using (var g = new GZipStream(s, CompressionMode.Decompress))
foreach (var r in Read(g, parser))
{
yield return(r);
}
}
else
{
using (var s = File.OpenRead(path))
foreach (var r in Read(s, parser))
{
yield return(r);
}
}
}
public IEnumerable <U> Read <U>(Stream stream, ICSVRecordParser <U> parser)
where U : IIPRangeCountry
{
return(ReadLines(stream)
.Where(l => l.Length > 0 && l[0] != '#' && !char.IsWhiteSpace(l[0]))
.Select(l => parser.ParseRecord(l))
.Where(r => r != null));
}
public IP2CountryCSVFileSource(string path, ICSVRecordParser <T> parser, Encoding encoding)
{
Path = path ?? throw new ArgumentNullException(nameof(path));
Parser = parser ?? throw new ArgumentNullException(nameof(parser));
Encoding = encoding ?? throw new ArgumentNullException(nameof(encoding));
}
public IP2CountryCSVFileSource(string path, ICSVRecordParser <T> parser)
: this(path, parser, Encoding.UTF8)
{
}
