Major improvements, deduplication and simplification in over.app.

- over.app.ConfigFile can create empty config files and read all options from them
- over.callback was created to hold commandline parser callbacks
- over.app.Option.is_boolean hint added
- major improvements and increased robustness of over.app.Main command line parser

test.py

@@ -21,20 +21,21 @@ class ConfigurationError(Exception):
 
 # --------------------------------------------------
 
-def tag_callback(tag, value):
-	return "%s: %s" %(tag, value)
+def noop(*args):
+	return args
 
-def tri_callback(a, b, c):
-	return "%s, %s and %s" %(a, b, c)
+def int4(*args):
+	return [int(x) for x in args]
 
 if __name__ == "__main__":
-	main = over.app.Main("Over App Test", version.str, "LICENSE")
+	main = over.app.Main("new-over-test", version.str, "LICENSE", features={"config_file": True})
 	# name, description, callback, default=Option_sources.none, count=0, overwrite=True, abbr=None, in_cfg_file=True, show_in_help=True
-	main.add_option("armed", "Description.", bool, True, abbr="A")
-	main.add_option("verbose", "Description.", bool, True, abbr="v")
-	main.add_option("read", "Description.", str, ["test"], count=1, overwrite=False, abbr="R")
-	main.add_option("tag", "Description.", tag_callback, [], count=2, overwrite=False, abbr="t")
-	main.add_option("tristate", "Description.", tri_callback, [], count=3, overwrite=True)
+	main.add_option("boolean-single", "", over.callback.boolean, [False], abbr="1")
+	main.add_option("boolean-triple", "", over.callback.booleans, [False, False, False], abbr="3", count=3)
+	main.add_option("str-single", "", str, ["kek"], abbr="s", count=1)
+	main.add_option("str-quad", "", noop, ["ze", "kek", "is", "bek"], abbr="4", count=4)
+	main.add_option("int-quad", "", int4, [45, 72, 97, 18], abbr="i", count=4)
+	main.add_option("int-quad-multi", "", int4, [45, 72, 97, 18], abbr="I", count=4, overwrite=False)
 	main.add_doc("Description", ["What it does.", "Another paragraph."])
 	main.parse()