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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/>.
"""
The File Manager, putting the pieces together
"""
from time import time
from collections import deque
import mimetypes
import os
import stat
import sys
import ranger
from ranger import *
from ranger.core.actions import Actions
from ranger.container.tags import Tags
from ranger.gui.ui import UI
from ranger.container import Bookmarks
from ranger.core.runner import Runner
from ranger.ext.get_executables import get_executables
from ranger.fsobject import Directory
from ranger.ext.signals import SignalDispatcher
from ranger import __version__
from ranger.core.loader import Loader
class FM(Actions, SignalDispatcher):
input_blocked = False
input_blocked_until = 0
def __init__(self, ui=None, bookmarks=None, tags=None):
"""Initialize FM."""
Actions.__init__(self)
SignalDispatcher.__init__(self)
self.ui = ui
self.log = deque(maxlen=20)
self.bookmarks = bookmarks
self.tags = tags
self.tabs = {}
self.py3 = sys.version_info >= (3, )
self.previews = {}
self.current_tab = 1
self.loader = Loader()
self.log.append('ranger {0} started! Process ID is {1}.' \
.format(__version__, os.getpid()))
self.log.append('Running on Python ' + sys.version.replace('\n',''))
mimetypes.knownfiles.append(os.path.expanduser('~/.mime.types'))
mimetypes.knownfiles.append(self.relpath('data/mime.types'))
self.mimetypes = mimetypes.MimeTypes()
# COMPAT
@property
def executables(self):
"""For compatibility. Calls get_executables()"""
return get_executables()
def initialize(self):
"""If ui/bookmarks are None, they will be initialized here."""
if self.bookmarks is None:
if ranger.arg.clean:
bookmarkfile = None
else:
bookmarkfile = self.confpath('bookmarks')
self.bookmarks = Bookmarks(
bookmarkfile=bookmarkfile,
bookmarktype=Directory,
autosave=self.settings.autosave_bookmarks)
self.bookmarks.load()
else:
self.bookmarks = bookmarks
if not ranger.arg.clean and self.tags is None:
self.tags = Tags(self.confpath('tagged'))
if self.ui is None:
self.ui = UI()
self.ui.initialize()
def mylogfunc(text):
self.notify(text, bad=True)
self.run = Runner(ui=self.ui, apps=self.apps,
logfunc=mylogfunc)
self.env.signal_bind('cd', self._update_current_tab)
def destroy(self):
debug = ranger.arg.debug
if self.ui:
try:
self.ui.destroy()
except:
if debug:
raise
if self.loader:
try:
self.loader.destroy()
except:
if debug:
raise
def block_input(self, sec=0):
self.input_blocked = sec != 0
self.input_blocked_until = time() + sec
def input_is_blocked(self):
if self.input_blocked and time() > self.input_blocked_until:
self.input_blocked = False
return self.input_blocked
def _copy_config_files(self):
if ranger.arg.clean:
return
import shutil
files = {'data/apps.py': 'apps.py',
'data/rc.conf': 'rc.conf',
'data/commands.py': 'commands.py',
'data/options.py': 'options.py',
'data/scope.sh': 'scope.sh'}
copied_any = False
for fname, target in files.items():
if not os.path.exists(self.confpath(target)):
if not copied_any:
copied_any = True
try:
os.makedirs(self.confpath())
except:
pass
sys.stderr.write("creating: %s\n" % self.confpath(target))
try:
shutil.copy(self.relpath(fname), self.confpath(target))
except Exception as e:
sys.stderr.write(" ERROR: %s\n" % str(e))
if target == 'scope.sh':
os.chmod(self.confpath('scope.sh'), os.stat(
self.confpath('scope.sh')).st_mode | stat.S_IXUSR)
if copied_any:
sys.stderr.write("Use --dont-copy-config to disable "
"automatic copying of example config files.\n")
def confpath(self, *paths):
"""returns the path relative to rangers configuration directory"""
if ranger.arg.clean:
assert 0, "Should not access relpath_conf in clean mode!"
else:
return os.path.join(ranger.arg.confdir, *paths)
def relpath(self, *paths):
"""returns the path relative to rangers library directory"""
return os.path.join(ranger.RANGERDIR, *paths)
def loop(self):
"""
The main loop consists of:
1. reloading bookmarks if outdated
2. letting the loader work
3. drawing and finalizing ui
4. reading and handling user input
5. after X loops: collecting unused directory objects
"""
self.env.enter_dir(self.env.path)
gc_tick = 0
# for faster lookup:
ui = self.ui
throbber = ui.throbber
loader = self.loader
env = self.env
has_throbber = hasattr(ui, 'throbber')
try:
while True:
loader.work()
if has_throbber:
if loader.has_work():
throbber(loader.status)
else:
throbber(remove=True)
ui.redraw()
ui.set_load_mode(loader.has_work())
ui.handle_input()
gc_tick += 1
if gc_tick > TICKS_BEFORE_COLLECTING_GARBAGE:
gc_tick = 0
env.garbage_collect(TIME_BEFORE_FILE_BECOMES_GARBAGE,
self.tabs)
except KeyboardInterrupt:
# this only happens in --debug mode. By default, interrupts
# are caught in curses_interrupt_handler
raise SystemExit
finally:
if ranger.arg.choosedir and self.env.cwd and self.env.cwd.path:
open(ranger.arg.choosedir, 'w').write(self.env.cwd.path)
self.bookmarks.remember(env.cwd)
self.bookmarks.save()
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