[processing] snap points to network by default (fix #19904)

Kudos to Pedro Venâncio for finding solution for this bug

(cherry picked from commit 3abea36)

Author: alexbruy

python/plugins/processing/algs/grass7/ext/v_net.py

@@ -58,12 +58,12 @@ def incorporatePoints(alg, parameters, context, feedback, pointLayerName='points
         threshold = alg.parameterAsDouble(parameters, 'threshold', context)
 
         # Create the v.net connect command for point layer integration
-        command = u"v.net input={} points={} output={} operation=connect threshold={}".format(
+        command = 'v.net -s input={} points={} output={} operation=connect threshold={}'.format(
             lineLayer, pointLayer, intLayer, threshold)
         alg.commands.append(command)
 
         # Connect the point layer database to the layer 2 of the network
-        command = u"v.db.connect -o map={} table={} layer=2".format(intLayer, pointLayer)
+        command = 'v.db.connect -o map={} table={} layer=2'.format(intLayer, pointLayer)
         alg.commands.append(command)
 
         # remove undesired parameters

python/plugins/processing/algs/grass7/ext/v_net_connectivity.py

@@ -30,22 +30,22 @@
 
 def checkParameterValuesBeforeExecuting(alg, parameters, context):
     """ Verify if we have the right parameters """
-    params = [u'where', u'cats']
+    params = ['where', 'cats']
     values = []
     for param in params:
         for i in range(1, 3):
             values.append(
                 alg.parameterAsString(
                     parameters,
-                    u'set{}_{}'.format(i, param),
+                    'set{}_{}'.format(i, param),
                     context
                 )
             )
 
     if (values[0] or values[2]) and (values[1] or values[3]):
         return True, None
 
-    return False, alg.tr("You need to set at least setX_where or setX_cats parameters for each set!")
+    return False, alg.tr('You need to set at least setX_where or setX_cats parameters for each set!')
 
 
 def processCommand(alg, parameters, context, feedback):

python/plugins/processing/algs/grass7/ext/v_net_distance.py

@@ -48,20 +48,20 @@ def processCommand(alg, parameters, context, feedback):
     threshold = alg.parameterAsDouble(parameters, 'threshold', context)
 
     # Create the v.net connect command for from_layer integration
-    command = u"v.net input={} points={} output={} operation=connect threshold={} arc_layer=1 node_layer=2".format(
+    command = 'v.net -s input={} points={} output={} operation=connect threshold={} arc_layer=1 node_layer=2'.format(
         lineLayer, fromLayer, intLayer, threshold)
     alg.commands.append(command)
 
     # Do it again with to_layer
-    command = u"v.net input={} points={} output={} operation=connect threshold={} arc_layer=1 node_layer=3".format(
+    command = 'v.net -s input={} points={} output={} operation=connect threshold={} arc_layer=1 node_layer=3'.format(
         intLayer, toLayer, netLayer, threshold)
     alg.commands.append(command)
 
     # Connect the point layer database to the layer 2 of the network
-    command = u"v.db.connect -o map={} table={} layer=2".format(netLayer, fromLayer)
+    command = 'v.db.connect -o map={} table={} layer=2'.format(netLayer, fromLayer)
     alg.commands.append(command)
 
-    command = u"v.db.connect -o map={} table={} layer=3".format(netLayer, toLayer)
+    command = 'v.db.connect -o map={} table={} layer=3'.format(netLayer, toLayer)
     alg.commands.append(command)
 
     # remove undesired parameters

python/plugins/processing/algs/grass7/ext/v_net_flow.py

@@ -31,10 +31,10 @@
 
 def checkParameterValuesBeforeExecuting(alg, parameters, context):
     """ Verify if we have the right parameters """
-    params = [u'where', u'cats']
+    params = ['where', 'cats']
     values = []
     for param in params:
-        for i in [u'source', u'sink']:
+        for i in ['source', 'sink']:
             values.append(
                 alg.parameterAsString(
                     parameters,
@@ -46,7 +46,7 @@ def checkParameterValuesBeforeExecuting(alg, parameters, context):
     if (values[0] or values[2]) and (values[1] or values[3]):
         return True, None
 
-    return False, alg.tr("You need to set at least source/sink_where or source/sink_cats parameters for each set!")
+    return False, alg.tr('You need to set at least source/sink_where or source/sink_cats parameters for each set!')
 
 
 def processCommand(alg, parameters, context, feedback):