From ca15e289c046d80b7d2e8579ab78bb660d7e1172 Mon Sep 17 00:00:00 2001
From: Hugo Roussaffa <hugoroussaffa@gmail.com>
Date: Mon, 30 Oct 2017 16:23:48 +0100
Subject: [PATCH] [add script] : Duplicate Field

---
 scripts/duplicate_field.py      | 68 +++++++++++++++++++++++++++++++++
 scripts/duplicate_field.py.help |  1 +
 scripts/list.txt                |  1 +
 3 files changed, 70 insertions(+)
 create mode 100644 scripts/duplicate_field.py
 create mode 100644 scripts/duplicate_field.py.help

diff --git a/scripts/duplicate_field.py b/scripts/duplicate_field.py
new file mode 100644
index 0000000..98e7595
--- /dev/null
+++ b/scripts/duplicate_field.py
@@ -0,0 +1,68 @@
+from qgis.core import *
+from qgis.gui import *
+from qgis.utils import *
+from PyQt4.QtCore import QVariant
+
+
+##Duplicate Fied=name
+##input_layer=vector
+##field_to_duplicate=field input_layer
+##fieldname_list=string 
+
+
+layer = processing.getObject(input_layer)
+
+pr = layer.dataProvider()
+
+caps = pr.capabilities()
+
+def refreshLayer():
+    layer.setCacheImage( None )
+    layer.dataProvider().forceReload()
+    layer.triggerRepaint()
+    iface.mapCanvas().refreshAllLayers()
+
+fields = layer.pendingFields()
+
+
+QVariantDict = {
+	4 : QVariant.Int,
+	1 : QVariant.Double,
+	10 : QVariant.String,
+	14 : QVariant.Date,
+}
+
+listFieldName = str(fieldname_list).split(';')
+
+newFieldIndex = len(fields)
+FieldIdx=0
+
+for field in fields:
+	if field.name() == field_to_duplicate:
+		FieldIdx = fields.indexFromName(field.name()) 
+		field_type = QVariantDict[field.type()]
+		field_precision = field.precision()
+		field_length = field.length()
+		field_widget = layer.editorWidgetV2(FieldIdx)
+		field_widgetConfig = layer.editorWidgetV2Config(FieldIdx)
+		progress.setText("{},{},{},{}".format(str(field.name()),str(FieldIdx), str(field_widget), str(field_widgetConfig)))
+	else:
+		pass
+
+for f in listFieldName:
+	if f in fields:
+		pass
+	else :
+		if caps & QgsVectorDataProvider.AddAttributes:
+			modelProperties= QgsField(f, field_type, str(field_length), int(field_precision), QVariant.String )				
+			res = pr.addAttributes([modelProperties])
+			layer.updateFields()			
+			layer.setEditorWidgetV2(newFieldIndex , field_widget)
+			layer.setEditorWidgetV2Config(newFieldIndex , field_widgetConfig)
+			newField_widget = layer.editorWidgetV2(newFieldIndex)
+			newField_widgetConfig = layer.editorWidgetV2Config(newFieldIndex)
+			progress.setText("{},{},{},{}".format(str(f),str(newFieldIndex), str(newField_widget), str(newField_widgetConfig)))
+			newFieldIndex += 1
+
+
+refreshLayer()
\ No newline at end of file
diff --git a/scripts/duplicate_field.py.help b/scripts/duplicate_field.py.help
new file mode 100644
index 0000000..8633387
--- /dev/null
+++ b/scripts/duplicate_field.py.help
@@ -0,0 +1 @@
+{"field_to_duplicate": "the field you want to duplicate", "ALG_DESC": "This script create fields based on an existing field properties (type, length, precision) and widget configuration", "ALG_CREATOR": "Hugo Roussaffa - Geodatup. contact@geodatup.fr", "ALG_VERSION": "0.1", "input_layer": "The layer you want to work with (creating new fields", "fieldname_list": "the list of field name you want to create, separate by semi-colon ; \nBy exemple : FIELD1;FIELD2 /n /nnote: If a field already exist, the algorithm automaticaly create a suffix '_1' to the name's field  ", "ALG_HELP_CREATOR": "Hugo Roussaffa - Geodatup. contact@geodatup.fr"}
\ No newline at end of file
diff --git a/scripts/list.txt b/scripts/list.txt
index a66e636..2f7e12e 100644
--- a/scripts/list.txt
+++ b/scripts/list.txt
@@ -14,6 +14,7 @@ Define_1_raster_layer_properties.py,1.0,Define 1 raster layer properties
 Define_1_vector_layer_properties.py,1.0,Define 1 vector layer properties
 Define_vector_layer_properties.py,1.0,Define vector layer properties
 DissolveWithStats.py,0.4,DissolveWithStats
+duplicate_field.py,0.1,Duplicate Field
 EquivalentNumField.py,1.0,EquivalentNumField
 Extract_raster_values_to_CSV.py,1,Extract raster values to CSV
 Extract_raster_values_to_shapefile.py,1,Extract raster values to shapefile