258: Added some experimental features for interactively prompting for values

ipalib/cli.py

@@ -147,8 +147,32 @@ class CLI(object):
 
     def run_cmd(self, cmd, argv):
         (args, kw) = self.parse(cmd, argv)
+        self.run_interactive(cmd, args, kw)
+
+    def run_interactive(self, cmd, args, kw):
+        for option in cmd.smart_option_order():
+            if option.name not in kw:
+                default = option.get_default(**kw)
+                if default is None:
+                    prompt = '%s: ' % option.name
+                else:
+                    prompt = '%s [%s]: ' % (option.name, default)
+                error = None
+                while True:
+                    if error is not None:
+                        print '>>> %s: %s' % (option.name, error)
+                    value = raw_input(prompt)
+                    if default is not None and len(value) == 0:
+                        value = default
+                    if len(value) == 0:
+                        error = 'Must supply a value'
+                    else:
+                        kw[option.name] = value
+                        break
         cmd(*args, **kw)
 
+
+
     def parse(self, cmd, argv):
         parser = self.build_parser(cmd)
         (kwc, args) = parser.parse_args(argv, KWCollector())

ipalib/public.py

@@ -169,6 +169,10 @@ class Option(plugable.ReadOnly):
             return self.type.values
         return tuple()
 
+    def __call__(self, value, **kw):
+        pass
+
+
 
 class Command(plugable.Plugin):
     __public__ = frozenset((
@@ -178,6 +182,7 @@ class Command(plugable.Plugin):
         'validate',
         'execute',
         '__call__',
+        'smart_option_order',
         'Option',
     ))
     __Option = None
@@ -257,6 +262,17 @@ class Command(plugable.Plugin):
         self.validate(**kw)
         self.execute(**kw)
 
+    def smart_option_order(self):
+        def get_key(option):
+            if option.required:
+                if option.default_from is None:
+                    return 0
+                return 1
+            return 2
+        for option in sorted(self.Option(), key=get_key):
+            yield option
+
+
 
 class Object(plugable.Plugin):
     __public__ = frozenset((