Fixed an error when importing projected coordinate systems. Support of the UNIT parameter (#128)

Author: mario-mu

src/ProjNet/IO/CoordinateSystems/CoordinateSystemWktReader.cs

@@ -360,9 +360,17 @@ private static ProjectedCoordinateSystem ReadProjectedCoordinateSystem(WktStream
             tokenizer.ReadToken("GEOGCS");
             var geographicCS = ReadGeographicCoordinateSystem(tokenizer);
             tokenizer.ReadToken(",");
-            tokenizer.ReadToken("PROJECTION");
+            tokenizer.NextToken();
+
+            LinearUnit linearUnit = null;
+
+            if (tokenizer.GetStringValue().Equals("UNIT", StringComparison.OrdinalIgnoreCase))
+            {
+                linearUnit = ReadLinearUnit(tokenizer);
+                tokenizer.ReadToken(",");
+            }
             var projection = ReadProjection(tokenizer);
-            var unit = ReadLinearUnit(tokenizer);
+            var unit = linearUnit ?? ReadLinearUnit(tokenizer);
             var axisInfo = new List<AxisInfo>(2);
             string authority = string.Empty;
             long authorityCode = -1;

test/ProjNet.Tests/CoordinateSystemServicesTest.cs

@@ -88,7 +88,7 @@ private static IEnumerable<KeyValuePair<int, string>> LoadXml(string xmlPath)
                 var sridElement = node.Element("SRID");
                 if (sridElement != null)
                 {
-                    var srid = int.Parse(sridElement.Value);
+                    int srid = int.Parse(sridElement.Value);
                     yield return new KeyValuePair<int, string>(srid, node.LastNode.ToString());
                 }
             }