ocrd interface: add right_to_left

qurator/eynollah/ocrd-tool.json

@@ -59,6 +59,11 @@
           "default": false,
           "description": "if this parameter set to true, this tool will try to return contoure of textlines instead of rectangle bounding box of textline with a faster method."
         },
+        "right_to_left": {
+          "type": "boolean",
+          "default": false,
+          "description": "if this parameter set to true, this tool will extract right-to-left reading order."
+        },
         "headers_off": {
           "type": "boolean",
           "default": false,

qurator/eynollah/processor.py

@@ -30,6 +30,7 @@ class EynollahProcessor(Processor):
             allow_enhancement=self.parameter['allow_enhancement'],
             curved_line=self.parameter['curved_line'],
             light_version=self.parameter['light_mode'],
+            right2left=self.parameter['right_to_left'],
             textline_light=self.parameter['textline_light'],
             full_layout=self.parameter['full_layout'],
             allow_scaling=self.parameter['allow_scaling'],