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"""Bash completion for the CLI.
"""
import logging
from cliff import command
class CompleteDictionary:
"""dictionary for bash completion
"""
def __init__(self):
self._dictionary = {}
def add_command(self, command, actions):
optstr = ""
dicto = self._dictionary
for action in actions:
for opt in action.option_strings:
if optstr:
optstr += " " + opt
else:
optstr += opt
last = None
lastsubcmd = None
for subcmd in command:
if subcmd not in dicto:
dicto[subcmd] = {}
last = dicto
lastsubcmd = subcmd
dicto = dicto[subcmd]
last[lastsubcmd] = optstr
def get_commands(self):
cmdo = ""
keys = sorted(self._dictionary.keys())
for cmd in keys:
if cmdo == "":
cmdo += cmd
else:
cmdo += " " + cmd
return cmdo
def _get_data_recurse(self, dictionary, path):
ray = []
keys = sorted(dictionary.keys())
for cmd in keys:
if path == "":
name = str(cmd)
else:
name = path + "_" + str(cmd)
value = dictionary[cmd]
if isinstance(value, str):
ray.append((name, value))
else:
cmdlist = ' '.join(sorted(value.keys()))
ray.append((name, cmdlist))
ray += self._get_data_recurse(value, name)
return ray
def get_data(self):
return sorted(self._get_data_recurse(self._dictionary, ""))
class CompleteNoCode:
"""completion with no code
"""
def __init__(self, name):
self.name = name
def get_header(self):
return ''
def get_trailer(self):
return ''
class CompleteBash:
"""completion for bash
"""
def __init__(self, name):
self.name = str(name)
def get_header(self):
return ('_' + self.name + '()\n\
{\n\
local cur prev words\n\
COMPREPLY=()\n\
_get_comp_words_by_ref -n : cur prev words\n\
\n\
# Command data:\n')
def get_trailer(self):
return ('\
\n\
cmd=""\n\
words[0]=""\n\
completed="${cmds}" \n\
for var in "${words[@]:1}"\n\
do\n\
if [[ ${var} == -* ]] ; then\n\
break\n\
fi\n\
if [ -z "${cmd}" ] ; then\n\
proposed="${var}"\n\
else\n\
proposed="${cmd}_${var}"\n\
fi\n\
local i="cmds_${proposed}"\n\
local comp="${!i}"\n\
if [ -z "${comp}" ] ; then\n\
break\n\
fi\n\
if [[ ${comp} == -* ]] ; then\n\
if [[ ${cur} != -* ]] ; then\n\
completed=""\n\
break\n\
fi\n\
fi\n\
cmd="${proposed}"\n\
completed="${comp}"\n\
done\n\
\n\
if [ -z "${completed}" ] ; then\n\
COMPREPLY=( $( compgen -f -- "$cur" ) $( compgen -d -- "$cur" ) )\n\
else\n\
COMPREPLY=( $(compgen -W "${completed}" -- ${cur}) )\n\
fi\n\
return 0\n\
}\n\
complete -F _' + self.name + ' ' + self.name + '\n')
class CompleteCommand(command.Command):
"""print bash completion command
"""
log = logging.getLogger(__name__ + '.CompleteCommand')
def get_parser(self, prog_name):
parser = super(CompleteCommand, self).get_parser(prog_name)
parser.add_argument(
"--name",
default=None,
metavar='<command_name>',
help="Command name to support with command completion"
)
parser.add_argument(
"--shell",
default='bash',
metavar='<shell>',
choices=['bash', 'none'],
help="Shell being used. Use none for data only (default: bash)"
)
return parser
def get_actions(self, command):
the_cmd = self.app.command_manager.find_command(command)
cmd_factory, cmd_name, search_args = the_cmd
cmd = cmd_factory(self.app, search_args)
if self.app.interactive_mode:
full_name = (cmd_name)
else:
full_name = (' '.join([self.app.NAME, cmd_name]))
cmd_parser = cmd.get_parser(full_name)
return cmd_parser._get_optional_actions()
def take_action(self, parsed_args):
self.log.debug('take_action(%s)' % parsed_args)
if parsed_args.name:
name = parsed_args.name
else:
name = self.app.NAME
if parsed_args.shell == "none":
shell = CompleteNoCode(name)
else:
shell = CompleteBash(name)
self.app.stdout.write(shell.get_header())
dicto = CompleteDictionary()
for cmd in self.app.command_manager:
command = cmd[0].split()
dicto.add_command(command, self.get_actions(command))
cmdo = dicto.get_commands()
self.app.stdout.write(" cmds='{0}'\n".format(cmdo))
for datum in dicto.get_data():
self.app.stdout.write(' cmds_{0}=\'{1}\'\n'.format(*datum))
self.app.stdout.write(shell.get_trailer())
return 0
|
