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# Copyright (C) 2009-2013 Roman Zimbelmann <hut@lavabit.com>
# This software is distributed under the terms of the GNU GPL version 3.
"""The File Manager, putting the pieces together"""
from time import time
from collections import deque
import mimetypes
import os.path
import pwd
import socket
import stat
import sys
import ranger.api
from ranger.core.actions import Actions
from ranger.core.tab import Tab
from ranger.container.tags import Tags
from ranger.gui.ui import UI
from ranger.container.bookmarks import Bookmarks
from ranger.core.runner import Runner
from ranger.ext.get_executables import get_executables
from ranger.ext.rifle import Rifle
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
mode = 'normal' # either 'normal' or 'visual'.
search_method = 'ctime'
_previous_selection = None
_visual_reverse = False
_visual_start = None
_visual_start_pos = None
def __init__(self, ui=None, bookmarks=None, tags=None, paths=['.']):
"""Initialize FM."""
Actions.__init__(self)
SignalDispatcher.__init__(self)
if ui is None:
self.ui = UI()
else:
self.ui = ui
self.start_paths = paths
self.directories = dict()
self.log = deque(maxlen=20)
self.bookmarks = bookmarks
self.current_tab = 1
self.tabs = {}
self.tags = tags
self.restorable_tabs = deque([], ranger.MAX_RESTORABLE_TABS)
self.py3 = sys.version_info >= (3, )
self.previews = {}
self.loader = Loader()
self.copy_buffer = set()
self.do_cut = False
try:
self.username = pwd.getpwuid(os.geteuid()).pw_name
except:
self.username = 'uid:' + str(os.geteuid())
self.hostname = socket.gethostname()
self.home_path = os.path.expanduser('~')
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()
def initialize(self):
"""If ui/bookmarks are None, they will be initialized here."""
self.tabs = dict((n+1, Tab(path)) for n, path in
enumerate(self.start_paths))
tab_list = self._get_tab_list()
if tab_list:
self.current_tab = tab_list[0]
self.thistab = self.tabs[self.current_tab]
else:
self.current_tab = 1
self.tabs[self.current_tab] = self.thistab = Tab('.')
if not ranger.arg.clean and os.path.isfile(self.confpath('rifle.conf')):
rifleconf = self.confpath('rifle.conf')
else:
rifleconf = self.relpath('config/rifle.conf')
self.rifle = Rifle(rifleconf)
self.rifle.reload_config()
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()
if not ranger.arg.clean and self.tags is None:
self.tags = Tags(self.confpath('tagged'))
self.ui.setup_curses()
self.ui.initialize()
self.rifle.hook_before_executing = lambda a, b, flags: \
self.ui.suspend() if 'f' not in flags else None
self.rifle.hook_after_executing = lambda a, b, flags: \
self.ui.initialize() if 'f' not in flags else None
self.rifle.hook_logger = self.notify
def mylogfunc(text):
self.notify(text, bad=True)
self.run = Runner(ui=self.ui, logfunc=mylogfunc, fm=self)
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 _get_thisfile(self):
return self.thistab.thisfile
def _set_thisfile(self, obj):
self.thistab.thisfile = obj
def _get_thisdir(self):
return self.thistab.thisdir
def _set_thisdir(self, obj):
self.thistab.thisdir = obj
thisfile = property(_get_thisfile, _set_thisfile)
thisdir = property(_get_thisdir, _set_thisdir)
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, which):
if ranger.arg.clean:
sys.stderr.write("refusing to copy config files in clean mode\n")
return
import shutil
from errno import EEXIST
def copy(_from, to):
if os.path.exists(self.confpath(to)):
sys.stderr.write("already exists: %s\n" % self.confpath(to))
else:
sys.stderr.write("creating: %s\n" % self.confpath(to))
try:
os.makedirs(ranger.arg.confdir)
except OSError as err:
if err.errno != EEXIST: # EEXIST means it already exists
print("This configuration directory could not be created:")
print(ranger.arg.confdir)
print("To run ranger without the need for configuration")
print("files, use the --clean option.")
raise SystemExit()
try:
shutil.copy(self.relpath(_from), self.confpath(to))
except Exception as e:
sys.stderr.write(" ERROR: %s\n" % str(e))
if which == 'rifle' or which == 'all':
copy('config/rifle.conf', 'rifle.conf')
if which == 'commands' or which == 'all':
copy('config/commands.py', 'commands.py')
if which == 'rc' or which == 'all':
copy('config/rc.conf', 'rc.conf')
if which == 'scope' or which == 'all':
copy('data/scope.sh', 'scope.sh')
os.chmod(self.confpath('scope.sh'),
os.stat(self.confpath('scope.sh')).st_mode | stat.S_IXUSR)
if which in ('all', 'rifle', 'scope', 'commands', 'rc'):
sys.stderr.write("\nPlease note that configuration files may "
"change as ranger evolves.\nIt's completely up to you to keep "
"them up to date.\n")
else:
sys.stderr.write("Unknown config file `%s'\n" % which)
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 get_directory(self, path):
"""Get the directory object at the given path"""
path = os.path.abspath(path)
try:
return self.directories[path]
except KeyError:
obj = Directory(path)
self.directories[path] = obj
return obj
def garbage_collect(self, age, tabs=None): # tabs=None is for COMPATibility
"""Delete unused directory objects"""
for key in tuple(self.directories):
value = self.directories[key]
if age != -1:
if not value.is_older_than(age) \
or any(value in tab.pathway for tab in self.tabs.values()):
continue
del self.directories[key]
if value.is_directory:
value.files = None
self.settings.signal_garbage_collect()
self.signal_garbage_collect()
def loop(self):
"""The main loop of ranger.
It 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.enter_dir(self.thistab.path)
gc_tick = 0
# for faster lookup:
ui = self.ui
throbber = ui.throbber
loader = self.loader
has_throbber = hasattr(ui, 'throbber')
zombies = self.run.zombies
ranger.api.hook_ready(self)
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(not loader.paused and loader.has_work())
ui.handle_input()
if zombies:
for zombie in tuple(zombies):
if zombie.poll() is not None:
zombies.remove(zombie)
gc_tick += 1
if gc_tick > ranger.TICKS_BEFORE_COLLECTING_GARBAGE:
gc_tick = 0
self.garbage_collect(ranger.TIME_BEFORE_FILE_BECOMES_GARBAGE)
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.thisdir and self.thisdir.path:
# XXX: UnicodeEncodeError: 'utf-8' codec can't encode character
# '\udcf6' in position 42: surrogates not allowed
open(ranger.arg.choosedir, 'w').write(self.thisdir.path)
self.bookmarks.remember(self.thisdir)
self.bookmarks.save()
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