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# Copyright (C) 2009, 2010 Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
from collections import deque
from ranger.shared import FileManagerAware
from ranger.gui.widgets import console_mode as cmode
from ranger.ext.command_parser import LazyParser as parse
class CommandContainer(object):
def __init__(self):
self.aliases = {}
self.commands = {}
def __getitem__(self, key):
return self.commands[key]
def alias(self, new, old):
self.aliases[new] = old
def load_commands_from_module(self, module):
for varname, var in vars(module).items():
try:
if issubclass(var, Command) and var != Command:
self.commands[var.name or varname] = var
except TypeError:
pass
for new, old in self.aliases.items():
try:
self.commands[new] = self.commands[old]
except:
pass
def get_command(self, name, abbrev=True):
if abbrev:
lst = [cls for cmd, cls in self.commands.items() \
if cmd.startswith(name) \
and cls.allow_abbrev \
or cmd == name]
if len(lst) == 0:
raise KeyError
if len(lst) == 1 or self.commands[name] in lst:
return lst[0]
raise ValueError("Ambiguous command")
else:
try:
return self.commands[name]
except KeyError:
return None
def command_generator(self, start):
return (cmd + ' ' for cmd in self.commands if cmd.startswith(start))
class Command(FileManagerAware):
"""Abstract command class"""
name = None
allow_abbrev = True
def __init__(self, line, mode):
self.line = line
self.mode = mode
def execute(self):
"""Override this"""
def tab(self):
"""Override this"""
def quick_open(self):
"""Override this"""
def _tab_only_directories(self):
from os.path import dirname, basename, expanduser, join, isdir
line = parse(self.line)
cwd = self.fm.env.cwd.path
try:
rel_dest = line.rest(1)
except IndexError:
rel_dest = ''
# expand the tilde into the user directory
if rel_dest.startswith('~'):
rel_dest = expanduser(rel_dest)
# define some shortcuts
abs_dest = join(cwd, rel_dest)
abs_dirname = dirname(abs_dest)
rel_basename = basename(rel_dest)
rel_dirname = dirname(rel_dest)
try:
# are we at the end of a directory?
if rel_dest.endswith('/') or rel_dest == '':
_, dirnames, _ = os.walk(abs_dest).next()
# are we in the middle of the filename?
else:
_, dirnames, _ = os.walk(abs_dirname).next()
dirnames = [dn for dn in dirnames \
if dn.startswith(rel_basename)]
except (OSError, StopIteration):
# os.walk found nothing
pass
else:
dirnames.sort()
# no results, return None
if len(dirnames) == 0:
return
# one result. since it must be a directory, append a slash.
if len(dirnames) == 1:
return line.start(1) + join(rel_dirname, dirnames[0]) + '/'
# more than one result. append no slash, so the user can
# manually type in the slash to advance into that directory
return (line.start(1) + join(rel_dirname, dirname) for dirname in dirnames)
def _tab_directory_content(self):
from os.path import dirname, basename, expanduser, join, isdir
line = parse(self.line)
cwd = self.fm.env.cwd.path
try:
rel_dest = line.rest(1)
except IndexError:
rel_dest = ''
# expand the tilde into the user directory
if rel_dest.startswith('~'):
rel_dest = expanduser(rel_dest)
# define some shortcuts
abs_dest = join(cwd, rel_dest)
abs_dirname = dirname(abs_dest)
rel_basename = basename(rel_dest)
rel_dirname = dirname(rel_dest)
try:
# are we at the end of a directory?
if rel_dest.endswith('/') or rel_dest == '':
_, dirnames, filenames = os.walk(abs_dest).next()
names = dirnames + filenames
# are we in the middle of the filename?
else:
_, dirnames, filenames = os.walk(abs_dirname).next()
names = [name for name in (dirnames + filenames) \
if name.startswith(rel_basename)]
except (OSError, StopIteration):
# os.walk found nothing
pass
else:
names.sort()
# no results, return None
if len(names) == 0:
return
# one result. since it must be a directory, append a slash.
if len(names) == 1:
return line.start(1) + join(rel_dirname, names[0]) + '/'
# more than one result. append no slash, so the user can
# manually type in the slash to advance into that directory
return (line.start(1) + join(rel_dirname, name) for name in names)
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