Implement command to reread the configuration file

site_ansto/instrument/util/config_edit.py

@@ -4,12 +4,28 @@
 import os
 import sys
 
+global config
+
 def read_config_file(config_filename):
   import ConfigParser
   config = ConfigParser.SafeConfigParser()
   config.read(config_filename)
   return config
 
+def reread_config_file(config_filename, cb_list):
+  config = read_config_file(config_filename)
+  for cb in cb_list:
+    lbl = cb.get_label()
+    if ":" in lbl:
+      lbl = lbl.split(":")[0]
+    state = False
+    if 'enabled' in config.options(lbl):
+      if config.get(lbl, 'enabled').lower() in ['1', 'yes', 'true']:
+        state = True
+    config.set(lbl, 'enabled', str(state))
+    cb.set_state(state, False)
+  return config
+
 def write_config_file(config, config_filename):
   for idx in range(8, 0, -1):
     if os.path.exists(config_filename + "." + str(idx)):
@@ -29,19 +45,23 @@ def do_cascade(config, name, cb_list, label, new_state):
   if label in config.options(name):
     cascade_list = config.get(name, label).lower().split(",")
     for cb in cb_list:
-      lbl = cb.get_label().split(":")[0].lower()
+      lbl = cb.get_label().lower()
+      if ":" in lbl:
+        lbl = lbl.split(":")[0]
       if lbl in cascade_list:
         cb.set_state(new_state)
 
 def main(config_filename):
   import urwid
+  global config
 
   config = read_config_file(config_filename)
   text_header = (
-      u"SICS Config Editor!                      w/W/F12 Saves & Exits\n"
-      u"UP / DOWN / PAGE UP / PAGE DOWN scroll.  q/Q/F8 Exits.")
+      u"SICS Config Editor!  SPACE/ENTER: Toggle,  w/W/F12: Write+Exit\n"
+      u"UP/DOWN/PAGE UP/PAGE DOWN: scroll,  r/R: Reread,  q/Q/F8: Quit")
 
   def checkbox_change(check_box, new_state, user_data):
+    global config
     config.set(user_data, 'enabled', str(new_state))
     line = u"Checkbox: name=%s, new_state=%s, user_data=%s" % (
         check_box.get_label(), str(new_state), str(user_data))
@@ -68,27 +88,30 @@ def main(config_filename):
     if group not in cb_map:
       cb_map[group] = []
     cb_map[group].append(txt)
+  lb_list = []
   cb_list = []
   for key in sorted(cb_map.keys()):
-    #cb_list.append(urwid.AttrWrap(urwid.Text("Group: %s" % key), 'bright'))
+    lb_list.append(urwid.AttrWrap(urwid.Text("Group: %s" % key), 'bright'))
     for txt in sorted(cb_map[key]):
       state = False
       if 'enabled' in config.options(txt):
         if config.get(txt, 'enabled').lower() in ['1', 'yes', 'true']:
           state = True
       config.set(txt, 'enabled', str(state))
-      cb_text = ""
-      cb_text += txt + ": ("
-      if 'group' in config.options(txt):
-        cb_text += config.get(txt, 'group').strip("\"") + ": "
-      if 'desc' in config.options(txt):
-        cb_text += config.get(txt, 'desc').strip("\"")
-      cb_text += ")"
+      cb_text = txt
+      if 'group' in config.options(txt) or 'desc' in config.options(txt):
+        cb_text += ": ("
+        if 'group' in config.options(txt):
+          cb_text += config.get(txt, 'group').strip("\"") + ": "
+        if 'desc' in config.options(txt):
+          cb_text += config.get(txt, 'desc').strip("\"")
+        cb_text += ")"
       cb = urwid.AttrWrap(urwid.CheckBox(cb_text,
             state=state,
             on_state_change=checkbox_change,
             user_data=txt), 'buttn', 'buttnf')
       cb_list.append(cb)
+      lb_list.append(cb)
 
   def fcc(focus):
     frame.footer = urwid.AttrWrap(urwid.Text(
@@ -133,9 +156,12 @@ def main(config_filename):
         ]
 
   def unhandled(key):
+    global config
     if key in ['w', 'W', 'f12']:
       write_config_file(config, config_filename)
       raise urwid.ExitMainLoop()
+    elif key in ['r', 'R']:
+      config = reread_config_file(config_filename, cb_list)
     elif key in ['e', 'E', 'f4']:
       f = sflw.get_focus()
       frame.footer = urwid.AttrWrap(urwid.Text([u"EditE: " + str(dir(f[0]))]), 'header')
@@ -157,9 +183,14 @@ def main(config_filename):
 if '__main__'==__name__:
   import argparse
 
-  default_ini = "my_config_parser.ini"
-  parser = argparse.ArgumentParser(description = "Edit a configuration (*.ini) file using python urwin")
-  parser.add_argument("path", nargs="?", default = default_ini, help="name of file to edit")
+  # set default_ini to the name of the file to edit when no name is supplied
+  default_ini = "experiment_configuration.ini"
+  parser = argparse.ArgumentParser(description = """
+    Edit a configuration (*.ini) file using python urwid widget library.
+    Options can be enabled or disabled with mouse or spacebar.
+    The default configuration filename is %s.
+  """ % default_ini)
+  parser.add_argument("path", nargs="?", default = default_ini, help="name of file to edit [%s]" % default_ini)
   args = parser.parse_args()
   default_ini = os.path.abspath(args.path)
   main(default_ini)