[fdo-users] FDO OGR 4.1 still has problems with Latin1/ISO-8859-1 when using MapInfo TAB

[Hans Milling]

Hi Jackie

I am not familiar with Vanilla (Google search did not reveal anything),
however I tried a simple console application and using the 4.0 binaries.
A name with a danish/latin letter like:
Næsborg
turns out as:
N波org

      OSGeo.FDO.IConnectionManager mConnMgr =
OSGeo.FDO.ClientServices.FeatureAccessManager.GetConnectionManager();
      IConnection mProvConn = mConnMgr.CreateConnection("OSGeo.OGR.4.0");
      IConnectionInfo connInfo = mProvConn.ConnectionInfo;
      IConnectionPropertyDictionary connPropDict =
connInfo.ConnectionProperties;
      connPropDict.SetProperty("DataSource", @"C:\test\names.tab");
      connPropDict.SetProperty("ReadOnly", "TRUE");
      mProvConn.Open();
      IDescribeSchema schemaCmd =
mProvConn.CreateCommand(OSGeo.FDO.Commands.CommandType.CommandType_DescribeSchema)
as IDescribeSchema;
      FeatureSchemaCollection schemaCol = schemaCmd.Execute();
      ISelect selCmd =
(ISelect)mProvConn.CreateCommand(OSGeo.FDO.Commands.CommandType.CommandType_Select);
      selCmd.SetFeatureClassName("names");
      IReader myReader = selCmd.Execute();
      while (myReader.ReadNext())
      {
        string name = myReader.GetString("name");
        Console.WriteLine(name);
      }

If I try to convert the name from UTF8 to bytes and back to a string:
        byte[] bytes = System.Text.Encoding.UTF8.GetBytes(name);
        string newname =
System.Text.Encoding.GetEncoding("ISO-8859-1").GetString(bytes);
I get this output:
Næ³¢org

Seems like the data is corrupted somehow.



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