additional parameters for retile algorithm

python/plugins/processing/algs/gdal/retile.py

@@ -48,6 +48,7 @@ class retile(GdalAlgorithm):
     FORMAT = 'FORMAT'
     RESAMPLING = 'RESAMPLING'
     OPTIONS = 'OPTIONS'
+    EXTRA = 'EXTRA'
     DATA_TYPE = 'DATA_TYPE'
     DELIMITER = 'DELIMITER'
     ONLY_PYRAMIDS = 'ONLY_PYRAMIDS'
@@ -114,6 +115,11 @@ class retile(GdalAlgorithm):
                 'class': 'processing.algs.gdal.ui.RasterOptionsWidget.RasterOptionsWidgetWrapper'}})
         params.append(options_param)
 
+        params.append(QgsProcessingParameterString(self.EXTRA,
+                                                   self.tr('Additional command-line parameters'),
+                                                   defaultValue=None,
+                                                   optional=True))
+
         params.append(QgsProcessingParameterEnum(self.DATA_TYPE,
                                                  self.tr('Output data type'),
                                                  self.TYPES,
@@ -184,6 +190,10 @@ class retile(GdalAlgorithm):
         if options:
             arguments.extend(GdalUtils.parseCreationOptions(options))
 
+        if self.EXTRA in parameters and parameters[self.EXTRA] not in (None, ''):
+            extra = self.parameterAsString(parameters, self.EXTRA, context)
+            arguments.append(extra)
+
         if self.parameterAsBoolean(parameters, self.DIR_FOR_ROW, context):
             arguments.append('-pyramidOnly')
 

python/plugins/processing/tests/GdalAlgorithmsTest.py

@@ -2517,6 +2517,15 @@ class TestGdalAlgorithms(unittest.TestCase, AlgorithmsTestBase.AlgorithmsTest):
                  '-ps 256 256 -overlap 0 -levels 1 -s_srs EPSG:3111 -r near -ot Float32 -targetDir {} {}'.format(outdir, source)
                  ])
 
+            # additional parameters
+            self.assertEqual(
+                alg.getConsoleCommands({'INPUT': [source],
+                                        'EXTRA': '-v -tileIndex tindex.shp',
+                                        'OUTPUT': outdir}, context, feedback),
+                ['gdal_retile.py',
+                 '-ps 256 256 -overlap 0 -levels 1 -r near -ot Float32 -v -tileIndex tindex.shp -targetDir {} '.format(outdir) +
+                 source])
+
     def testWarp(self):
         context = QgsProcessingContext()
         feedback = QgsProcessingFeedback()