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"""The Console widget implements a vim-like console for entering
commands, searching and executing files."""
from . import Widget
from ranger import commands
from ranger.gui.widgets.console_mode import is_valid_mode, mode_to_class
import curses
from collections import deque
DEFAULT_HISTORY = 0
SEARCH_HISTORY = 1
QUICKOPEN_HISTORY = 2
OPEN_HISTORY = 3
class Console(Widget):
mode = None
visible = False
commandlist = None
last_cursor_mode = 1
prompt = ':'
copy = ''
tab_deque = None
original_line = None
history = None
histories = None
override = None
def __init__(self, win):
from ranger.container import CommandList, History
Widget.__init__(self, win)
self.commandlist = CommandList()
self.settings.keys.initialize_console_commands(self.commandlist)
self.clear()
self.histories = [None] * 4
self.histories[DEFAULT_HISTORY] = History()
self.histories[SEARCH_HISTORY] = History()
self.histories[QUICKOPEN_HISTORY] = History()
self.histories[OPEN_HISTORY] = History()
def init(self):
"""override this. Called directly after class change"""
def draw(self):
if self.mode is None:
return
self.addstr(0, 0, self.prompt)
self.addstr(self.line)
def finalize(self):
try:
self.fm.ui.win.move(self.y,
self.x + self.pos + len(self.prompt))
except:
pass
def open(self, mode, string=''):
if not is_valid_mode(mode):
return False
cls = mode_to_class(mode)
self.last_cursor_mode = curses.curs_set(1)
self.mode = mode
self.__class__ = cls
self.history = self.histories[DEFAULT_HISTORY]
self.init()
self.tab_deque = None
self.focused = True
self.visible = True
self.line = string
self.pos = len(string)
self.history.add('')
return True
def close(self):
curses.curs_set(self.last_cursor_mode)
self.add_to_history()
self.clear()
self.__class__ = Console
self.focused = False
self.visible = False
if hasattr(self, 'on_close'):
self.on_close()
def clear(self):
self.pos = 0
self.line = ''
def press(self, key):
from curses.ascii import ctrl, ESC
try:
cmd = self.commandlist[self.env.keybuffer.tuple_with_numbers()]
except KeyError:
self.env.key_clear()
return
if cmd == self.commandlist.dummy_object:
return
cmd.execute_wrap(self)
self.env.key_clear()
def type_key(self, key):
self.tab_deque = None
if isinstance(key, int):
key = chr(key)
if self.pos == len(self.line):
self.line += key
else:
self.line = self.line[:self.pos] + key + self.line[self.pos:]
self.pos += len(key)
self.on_line_change()
def history_move(self, n):
from ranger.container.history import HistoryEmptyException
try:
current = self.history.current()
except HistoryEmptyException:
pass
else:
if self.line != current and self.line != self.history.top():
self.history.modify(self.line)
self.history.move(n)
current = self.history.current()
if self.line != current:
self.line = self.history.current()
self.pos = len(self.line)
def add_to_history(self):
self.history.fast_forward()
self.history.modify(self.line)
def move(self, relative = 0, absolute = None):
if absolute is not None:
if absolute < 0:
self.pos = len(self.line) + 1 + absolute
else:
self.pos = absolute
self.pos = min(max(0, self.pos + relative), len(self.line))
def delete_rest(self, direction):
self.tab_deque = None
if direction > 0:
self.copy = self.line[self.pos:]
self.line = self.line[:self.pos]
else:
self.copy = self.line[:self.pos]
self.line = self.line[self.pos:]
self.pos = 0
self.on_line_change()
def paste(self):
if self.pos == len(self.line):
self.line += self.copy
else:
self.line = self.line[:self.pos] + self.copy + self.line[self.pos:]
self.pos += len(self.copy)
self.on_line_change()
def delete_word(self):
self.tab_deque = None
try:
i = self.line.rindex(' ', 0, self.pos - 1) + 1
self.line = self.line[:i] + self.line[self.pos:]
self.pos = len(self.line)
except ValueError:
self.line = ''
self.pos = 0
self.on_line_change()
def delete(self, mod):
self.tab_deque = None
if mod == -1 and len(self.line) == 0:
self.close()
pos = self.pos + mod
self.line = self.line[0:pos] + self.line[pos+1:]
self.move(relative = mod)
self.on_line_change()
def execute(self):
self.tab_deque = None
self.close()
def tab(self):
pass
def on_line_change(self):
pass
class ConsoleWithTab(Console):
def tab(self, n=1):
if self.tab_deque is None:
tab_result = self._get_tab()
if isinstance(tab_result, str):
self.line = tab_result
self.pos = len(tab_result)
self.on_line_change()
elif tab_result == None:
pass
elif hasattr(tab_result, '__iter__'):
self.tab_deque = deque(tab_result)
self.tab_deque.appendleft(self.line)
if self.tab_deque is not None:
self.tab_deque.rotate(-n)
self.line = self.tab_deque[0]
self.pos = len(self.line)
self.on_line_change()
def _get_tab(self):
"""
Override this function in the subclass!
It should return either a string, an iterable or None.
If a string is returned, tabbing will result in the line turning
into that string.
If another iterable is returned, each tabbing will cycle through
the elements of the iterable (which have to be strings).
If None is returned, nothing will happen.
"""
return None
class CommandConsole(ConsoleWithTab):
prompt = ':'
def execute(self, cmd=None):
if cmd is None:
cmd = self._get_cmd()
if cmd:
cmd.execute()
Console.execute(self)
def _get_cmd(self):
command_class = self._get_cmd_class()
if command_class:
return command_class(self.line, self.mode)
else:
return None
def _get_cmd_class(self):
try:
command_name = self.line.split()[0]
except IndexError:
return None
try:
return commands.by_name[command_name]
except KeyError:
return None
def _get_tab(self):
if ' ' in self.line:
cmd = self._get_cmd()
if cmd:
return cmd.tab()
else:
return None
return commands.command_generator(self.line)
class QuickCommandConsole(CommandConsole):
"""
The QuickCommandConsole is essentially the same as the
CommandConsole, and includes one additional feature:
After each letter you type, it checks whether the command as it
stands there could be executed in a meaningful way, and if it does,
run it right away.
Example:
>cd ..
As you type the last dot, The console will recognize what you mean
and enter the parent directory saving you the time of pressing enter.
"""
prompt = '>'
def on_line_change(self):
cmd = self._get_cmd()
if cmd and cmd.quick_open():
self.execute(cmd)
class SearchConsole(Console):
prompt = '/'
def init(self):
self.history = self.histories[SEARCH_HISTORY]
def execute(self):
import re
if self.fm.env.pwd:
regexp = re.compile(self.line, re.L | re.U | re.I)
self.fm.env.last_search = regexp
if self.fm.search(order='search'):
self.fm.env.cf = self.fm.env.pwd.pointed_obj
Console.execute(self)
class OpenConsole(Console):
"""
The OpenConsole allows you to execute shell commands:
!vim * will run vim and open all files in the directory.
There is a special syntax for more control:
!d! mplayer will run mplayer with flags (d means detached)
!@ mplayer will open the selected files with mplayer
those two can be combinated:
!d!@mplayer will open the selection with a detached mplayer
For a list of other flags than "d", look at the documentation
of ranger.applications.
"""
prompt = '!'
def init(self):
self.history = self.histories[OPEN_HISTORY]
def execute(self):
from ranger.applications import run
from subprocess import STDOUT, PIPE
command, flags = self._parse()
if command:
run(command, flags=flags, fm=self.fm,
mode=0, shell=True, stdin=None,
apps=self.fm.apps, stderr=STDOUT)
Console.execute(self)
def _parse(self):
if '!' in self.line:
flags, cmd = self.line.split('!', 1)
else:
flags, cmd = '', self.line
add_selection = False
if cmd.startswith('@'):
cmd = cmd[1:]
add_selection = True
elif flags.startswith('@'):
flags = flags[1:]
add_selection = True
if add_selection:
cmd += ' ' + ' '.join(tuple(map(self._shellify,
self.env.get_selection())))
return (cmd, flags)
def _shellify(self, string):
return "'" + str(string).replace("'","'\"'\"'") + "'"
class QuickOpenConsole(ConsoleWithTab):
"""
The QuickOpenConsole allows you to open files with
pre-defined programs and modes very quickly. By adding flags
to the command, you can specify precisely how the program is run,
ie. the d-flag will run it detached from the filemanager.
"""
prompt = 'open with: '
def init(self):
self.history = self.histories[QUICKOPEN_HISTORY]
def execute(self):
split = self.line.split()
app, flags, mode = self._get_app_flags_mode()
self.fm.execute_file(
files = [self.env.cf],
app = app,
flags = flags,
mode = mode )
Console.execute(self)
def _get_app_flags_mode(self):
"""
Extracts the application, flags and mode from
a string entered into the "openwith_quick" console.
"""
# examples:
# "mplayer d 1" => ("mplayer", "d", 1)
# "aunpack 4" => ("aunpack", "", 4)
# "p" => ("", "p", 0)
# "" => None
app = ''
flags = ''
mode = 0
split = self.line.split()
if len(split) == 0:
pass
elif len(split) == 1:
part = split[0]
if self._is_app(part):
app = part
elif self._is_flags(part):
flags = part
elif self._is_mode(part):
mode = part
elif len(split) == 2:
part0 = split[0]
part1 = split[1]
if self._is_app(part0):
app = part0
if self._is_flags(part1):
flags = part1
elif self._is_mode(part1):
mode = part1
elif self._is_flags(part0):
flags = part0
if self._is_mode(part1):
mode = part1
elif self._is_mode(part0):
mode = part0
if self._is_flags(part1):
flags = part1
elif len(split) >= 3:
part0 = split[0]
part1 = split[1]
part2 = split[2]
if self._is_app(part0):
app = part0
if self._is_flags(part1):
flags = part1
if self._is_mode(part2):
mode = part2
elif self._is_mode(part1):
mode = part1
if self._is_flags(part2):
flags = part2
elif self._is_flags(part0):
flags = part0
if self._is_mode(part1):
mode = part1
elif self._is_mode(part0):
mode = part0
if self._is_flags(part1):
flags = part1
return app, flags, int(mode)
def _get_tab(self):
if ' ' not in self.line:
all_apps = self.fm.apps.all()
if all_apps:
return (app for app in all_apps if app.startswith(self.line))
return None
def _is_app(self, arg):
return self.fm.apps.has(arg)
def _is_flags(self, arg):
from ranger.applications import ALLOWED_FLAGS
return all(x in ALLOWED_FLAGS for x in arg)
def _is_mode(self, arg):
return all(x in '0123456789' for x in arg)
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