Adds short commandline parameter handling in GRC.

[debian/gnuradio] / grc / python / Param.py

diff --git a/grc/python/Param.py b/grc/python/Param.py
index f971d0c3fb6330ca7b06d24f5863e777334d6399..15ccd323c85e0fc9fe3d873124079e5a462cf1fb 100644 (file)
--- a/grc/python/Param.py
+++ b/grc/python/Param.py
@@ -302,6 +302,13 @@ class Param(_Param):
                elif t in ('string', 'file_open', 'file_save'):
                        #do not check if file/directory exists, that is a runtime issue
                        e = eval_string(v)
+                       str_e = str(e)
+                       if t == 'string' and self.get_name() == 'Short ID' and len(str_e) > 0:
+                               try: 
+                                       assert len(str_e) == 1
+                                       ord_e = ord(str_e)
+                                       assert ord_e >= ord('a') and ord_e <= ord('z') or ord_e >= ord('A') and ord_e <= ord('Z')
+                               except AssertionError: raise Exception, 'Short ID "%s" must be a single letter'%v
                        return str(e)
                #########################
                # Unique ID Type