Fix delimited text layers set to unknown geometry type if first row has

null geometry (fix #13749)

(cherry-picked from 7439643)

src/providers/delimitedtext/qgsdelimitedtextprovider.cpp

@@ -409,6 +409,7 @@ void QgsDelimitedTextProvider::scanFile( bool buildIndexes )
   QList<bool> couldBeInt;
   QList<bool> couldBeLongLong;
   QList<bool> couldBeDouble;
+  bool foundFirstGeometry = false;
 
   while ( true )
   {
@@ -458,11 +459,12 @@ void QgsDelimitedTextProvider::scanFile( bool buildIndexes )
             if ( mGeometryType == QGis::UnknownGeometry || geom->type() == mGeometryType )
             {
               mGeometryType = geom->type();
-              if ( mNumberFeatures == 0 )
+              if ( !foundFirstGeometry )
               {
                 mNumberFeatures++;
                 mWkbType = type;
                 mExtent = geom->boundingBox();
+                foundFirstGeometry = true;
               }
               else
               {
@@ -517,7 +519,7 @@ void QgsDelimitedTextProvider::scanFile( bool buildIndexes )
 
         if ( ok )
         {
-          if ( mNumberFeatures > 0 )
+          if ( foundFirstGeometry )
           {
             mExtent.combineExtentWith( pt.x(), pt.y() );
           }
@@ -527,6 +529,7 @@ void QgsDelimitedTextProvider::scanFile( bool buildIndexes )
             mExtent.set( pt.x(), pt.y(), pt.x(), pt.y() );
             mWkbType = QGis::WKBPoint;
             mGeometryType = QGis::Point;
+            foundFirstGeometry = true;
           }
           mNumberFeatures++;
           if ( buildSpatialIndex && qIsFinite( pt.x() ) && qIsFinite( pt.y() ) )
@@ -778,13 +781,15 @@ void QgsDelimitedTextProvider::rescanFile()
   mNumberFeatures = 0;
   mExtent = QgsRectangle();
   QgsFeature f;
+  bool foundFirstGeometry = false;
   while ( fi.nextFeature( f ) )
   {
     if ( mGeometryType != QGis::NoGeometry )
     {
-      if ( mNumberFeatures == 0 )
+      if ( !foundFirstGeometry )
       {
         mExtent = f.constGeometry()->boundingBox();
+        foundFirstGeometry = true;
       }
       else
       {

tests/src/python/test_qgsdelimitedtextprovider.py

@@ -43,7 +43,8 @@
                        QgsVectorLayer,
                        QgsFeatureRequest,
                        QgsRectangle,
-                       QgsMessageLog
+                       QgsMessageLog,
+                       QGis
                        )
 
 from utilities import (getQgisTestApp,
@@ -190,7 +191,7 @@ def delimitedTextData(testname, filename, requests, verbose, **params):
             msg = re.sub(r'file\s+.*' + re.escape(filename), 'file ' + filelogname, msg)
             msg = msg.replace(filepath, filelogname)
             log.append(msg)
-        return dict(fields=fields, fieldTypes=fieldTypes, data=data, log=log, uri=uri)
+        return dict(fields=fields, fieldTypes=fieldTypes, data=data, log=log, uri=uri, geometryType=layer.geometryType())
 
 
 def printWanted(testname, result):
@@ -206,6 +207,7 @@ def printWanted(testname, result):
     print prefix + "wanted={}"
     print prefix + "wanted['uri']=" + repr(result['uri'])
     print prefix + "wanted['fieldTypes']=" + repr(result['fieldTypes'])
+    print prefix + "wanted['geometryType']=" + repr(result['geometryType'])
     print prefix + "wanted['data']={"
     for k in sorted(data.keys()):
         row = data[k]
@@ -272,6 +274,10 @@ def runTest(file, requests, **params):
         msg = "Layer field types ({0}) doesn't match expected ({1})".format(
             result['fieldTypes'], wanted['fieldTypes'])
         failures.append(msg)
+    if result['geometryType'] != wanted['geometryType']:
+        msg = "Layer geometry type ({0}) doesn't match expected ({1})".format(
+            result['geometryType'], wanted['geometryType'])
+        failures.append(msg)
     wanted_data = wanted['data']
     for id in sorted(wanted_data.keys()):
         wrec = wanted_data[id]
@@ -728,5 +734,13 @@ def test_038_type_inference(self):
         requests = None
         runTest(filename, requests, **params)
 
+    def test_039_issue_13749(self):
+        # First record contains missing geometry
+        filename = 'test13749.csv'
+        params = {'yField': 'geom_y', 'xField': 'geom_x', 'type': 'csv'}
+        requests = None
+        runTest(filename, requests, **params)
+
+
 if __name__ == '__main__':
     unittest.main()