604 lines
21 KiB
Python
604 lines
21 KiB
Python
#
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# legacy.py
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#
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# Copyright (C) 2008-2009 Ido Abramovich <ido.deluge@gmail.com>
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# Copyright (C) 2009 Andrew Resch <andrewresch@gmail.com>
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#
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# Deluge is free software.
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#
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# You may redistribute it and/or modify it under the terms of the
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# GNU General Public License, as published by the Free Software
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# Foundation; either version 3 of the License, or (at your option)
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# any later version.
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#
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# deluge is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with deluge. If not, write to:
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# The Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor
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# Boston, MA 02110-1301, USA.
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#
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# In addition, as a special exception, the copyright holders give
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# permission to link the code of portions of this program with the OpenSSL
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# library.
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# You must obey the GNU General Public License in all respects for all of
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# the code used other than OpenSSL. If you modify file(s) with this
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# exception, you may extend this exception to your version of the file(s),
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# but you are not obligated to do so. If you do not wish to do so, delete
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# this exception statement from your version. If you delete this exception
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# statement from all source files in the program, then also delete it here.
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#
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#
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try:
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import curses
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except ImportError:
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pass
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from basemode import BaseMode
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import deluge.ui.console.colors as colors
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from twisted.internet import defer, reactor
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from deluge.ui.client import client
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import deluge.component as component
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import logging,os
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log = logging.getLogger(__name__)
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LINES_BUFFER_SIZE = 5000
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INPUT_HISTORY_SIZE = 500
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class Legacy(BaseMode):
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def __init__(self, stdscr, encoding=None):
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self.batch_write = False
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self.lines = []
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# A list of strings to be displayed based on the offset (scroll)
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self.lines = []
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# The offset to display lines
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self.display_lines_offset = 0
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# Holds the user input and is cleared on 'enter'
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self.input = ""
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self.input_incomplete = ""
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# Keep track of where the cursor is
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self.input_cursor = 0
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# Keep a history of inputs
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self.input_history = []
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self.input_history_index = 0
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# Keep track of double-tabs
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self.tab_count = 0
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# Get a handle to the main console
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self.console = component.get("ConsoleUI")
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# show the cursor
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curses.curs_set(2)
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BaseMode.__init__(self, stdscr, encoding)
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# This gets fired once we have received the torrents list from the core
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self.started_deferred = defer.Deferred()
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# Maintain a list of (torrent_id, name) for use in tab completion
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self.torrents = []
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def on_session_state(result):
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def on_torrents_status(torrents):
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for torrent_id, status in torrents.items():
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self.torrents.append((torrent_id, status["name"]))
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self.started_deferred.callback(True)
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client.core.get_torrents_status({"id": result}, ["name"]).addCallback(on_torrents_status)
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client.core.get_session_state().addCallback(on_session_state)
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# Register some event handlers to keep the torrent list up-to-date
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client.register_event_handler("TorrentAddedEvent", self.on_torrent_added_event)
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client.register_event_handler("TorrentRemovedEvent", self.on_torrent_removed_event)
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def update(self):
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pass
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def _doRead(self):
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# Read the character
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c = self.stdscr.getch()
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# We clear the input string and send it to the command parser on ENTER
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if c == curses.KEY_ENTER or c == 10:
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if self.input:
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self.add_line(">>> " + self.input)
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self.do_command(self.input.encode(self.encoding))
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if len(self.input_history) == INPUT_HISTORY_SIZE:
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# Remove the oldest input history if the max history size
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# is reached.
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del self.input_history[0]
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self.input_history.append(self.input)
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self.input_history_index = len(self.input_history)
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self.input = ""
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self.input_incomplete = ""
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self.input_cursor = 0
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self.stdscr.refresh()
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# Run the tab completer function
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elif c == 9:
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# Keep track of tab hit count to know when it's double-hit
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self.tab_count += 1
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if self.tab_count > 1:
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second_hit = True
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self.tab_count = 0
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else:
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second_hit = False
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if self.tab_completer:
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# We only call the tab completer function if we're at the end of
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# the input string on the cursor is on a space
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if self.input_cursor == len(self.input) or self.input[self.input_cursor] == " ":
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self.input, self.input_cursor = self.tab_completer(self.input, self.input_cursor, second_hit)
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# We use the UP and DOWN keys to cycle through input history
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elif c == curses.KEY_UP:
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if self.input_history_index - 1 >= 0:
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if self.input_history_index == len(self.input_history):
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# We're moving from non-complete input so save it just incase
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# we move back down to it.
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self.input_incomplete = self.input
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# Going back in the history
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self.input_history_index -= 1
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self.input = self.input_history[self.input_history_index]
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self.input_cursor = len(self.input)
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elif c == curses.KEY_DOWN:
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if self.input_history_index + 1 < len(self.input_history):
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# Going forward in the history
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self.input_history_index += 1
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self.input = self.input_history[self.input_history_index]
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self.input_cursor = len(self.input)
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elif self.input_history_index + 1 == len(self.input_history):
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# We're moving back down to an incomplete input
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self.input_history_index += 1
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self.input = self.input_incomplete
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self.input_cursor = len(self.input)
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# Cursor movement
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elif c == curses.KEY_LEFT:
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if self.input_cursor:
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self.input_cursor -= 1
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elif c == curses.KEY_RIGHT:
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if self.input_cursor < len(self.input):
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self.input_cursor += 1
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elif c == curses.KEY_HOME:
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self.input_cursor = 0
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elif c == curses.KEY_END:
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self.input_cursor = len(self.input)
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# Scrolling through buffer
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elif c == curses.KEY_PPAGE:
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self.display_lines_offset += self.rows - 3
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# We substract 3 for the unavailable lines and 1 extra due to len(self.lines)
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if self.display_lines_offset > (len(self.lines) - 4 - self.rows):
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self.display_lines_offset = len(self.lines) - 4 - self.rows
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self.refresh()
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elif c == curses.KEY_NPAGE:
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self.display_lines_offset -= self.rows - 3
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if self.display_lines_offset < 0:
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self.display_lines_offset = 0
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self.refresh()
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# We remove the tab count if the key wasn't a tab
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if c != 9:
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self.tab_count = 0
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# Delete a character in the input string based on cursor position
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if c == curses.KEY_BACKSPACE or c == 127:
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if self.input and self.input_cursor > 0:
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self.input = self.input[:self.input_cursor - 1] + self.input[self.input_cursor:]
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self.input_cursor -= 1
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elif c == curses.KEY_DC:
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if self.input and self.input_cursor < len(self.input):
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self.input = self.input[:self.input_cursor] + self.input[self.input_cursor + 1:]
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# A key to add to the input string
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else:
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if c > 31 and c < 256:
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# Emulate getwch
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stroke = chr(c)
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uchar = ""
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while not uchar:
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try:
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uchar = stroke.decode(self.encoding)
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except UnicodeDecodeError:
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c = self.stdscr.getch()
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stroke += chr(c)
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if uchar:
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if self.input_cursor == len(self.input):
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self.input += uchar
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else:
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# Insert into string
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self.input = self.input[:self.input_cursor] + uchar + self.input[self.input_cursor:]
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# Move the cursor forward
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self.input_cursor += 1
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# Update the input string on the screen
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self.add_string(self.rows - 1, self.input)
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try:
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self.stdscr.move(self.rows - 1, self.input_cursor)
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except curses.error:
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pass
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self.stdscr.refresh()
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def refresh(self):
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"""
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Refreshes the screen.
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Updates the lines based on the`:attr:lines` based on the `:attr:display_lines_offset`
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attribute and the status bars.
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"""
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self.stdscr.clear()
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# Update the status bars
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self.add_string(0, self.statusbars.topbar)
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self.add_string(self.rows - 2, self.statusbars.bottombar)
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# The number of rows minus the status bars and the input line
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available_lines = self.rows - 3
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# If the amount of lines exceeds the number of rows, we need to figure out
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# which ones to display based on the offset
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if len(self.lines) > available_lines:
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# Get the lines to display based on the offset
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offset = len(self.lines) - self.display_lines_offset
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lines = self.lines[-(available_lines - offset):offset]
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elif len(self.lines) == available_lines:
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lines = self.lines
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else:
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lines = [""] * (available_lines - len(self.lines))
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lines.extend(self.lines)
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# Add the lines to the screen
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for index, line in enumerate(lines):
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self.add_string(index + 1, line)
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# Add the input string
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self.add_string(self.rows - 1, self.input)
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# Move the cursor
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try:
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self.stdscr.move(self.rows - 1, self.input_cursor)
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except curses.error:
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pass
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self.stdscr.redrawwin()
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self.stdscr.refresh()
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def add_line(self, text, refresh=True):
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"""
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Add a line to the screen. This will be showed between the two bars.
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The text can be formatted with color using the following format:
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"{!fg, bg, attributes, ...!}"
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See: http://docs.python.org/library/curses.html#constants for attributes.
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Alternatively, it can use some built-in scheme for coloring.
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See colors.py for built-in schemes.
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"{!scheme!}"
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Examples:
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"{!blue, black, bold!}My Text is {!white, black!}cool"
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"{!info!}I am some info text!"
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"{!error!}Uh oh!"
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:param text: the text to show
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:type text: string
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:param refresh: if True, the screen will refresh after the line is added
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:type refresh: bool
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"""
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def get_line_chunks(line):
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"""
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Returns a list of 2-tuples (color string, text)
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"""
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chunks = []
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num_chunks = line.count("{!")
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for i in range(num_chunks):
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# Find the beginning and end of the color tag
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beg = line.find("{!")
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end = line.find("!}") + 2
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color = line[beg:end]
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line = line[end:]
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# Check to see if this is the last chunk
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if i + 1 == num_chunks:
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text = line
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else:
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# Not the last chunk so get the text up to the next tag
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# and remove the text from line
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text = line[:line.find("{!")]
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line = line[line.find("{!"):]
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chunks.append((color, text))
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return chunks
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for line in text.splitlines():
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# We need to check for line lengths here and split as necessary
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try:
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line_length = colors.get_line_length(line)
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except colors.BadColorString:
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log.error("Passed a bad colored string..")
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line_length = len(line)
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if line_length >= (self.cols - 1):
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s = ""
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# The length of the text without the color tags
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s_len = 0
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# We need to split this over multiple lines
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for chunk in get_line_chunks(line):
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if (len(chunk[1]) + s_len) < (self.cols - 1):
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# This chunk plus the current string in 's' isn't over
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# the maximum width, so just append the color tag and text
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s += chunk[0] + chunk[1]
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s_len += len(chunk[1])
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else:
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# The chunk plus the current string in 's' is too long.
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# We need to take as much of the chunk and put it into 's'
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# with the color tag.
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remain = (self.cols - 1) - s_len
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s += chunk[0] + chunk[1][:remain]
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# We append the line since it's full
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self.lines.append(s)
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# Start a new 's' with the remainder chunk
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s = chunk[0] + chunk[1][remain:]
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s_len = len(chunk[1][remain:])
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# Append the final string which may or may not be the full width
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if s:
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self.lines.append(s)
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else:
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self.lines.append(line)
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while len(self.lines) > LINES_BUFFER_SIZE:
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# Remove the oldest line if the max buffer size has been reached
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del self.lines[0]
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if refresh:
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self.refresh()
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def add_string(self, row, string):
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"""
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Adds a string to the desired `:param:row`.
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:param row: int, the row number to write the string
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"""
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col = 0
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try:
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parsed = colors.parse_color_string(string, self.encoding)
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except colors.BadColorString, e:
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log.error("Cannot add bad color string %s: %s", string, e)
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return
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for index, (color, s) in enumerate(parsed):
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if index + 1 == len(parsed):
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# This is the last string so lets append some " " to it
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s += " " * (self.cols - (col + len(s)) - 1)
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try:
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self.stdscr.addstr(row, col, s, color)
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except curses.error:
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pass
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col += len(s)
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def do_command(self, cmd):
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"""
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Processes a command.
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:param cmd: str, the command string
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"""
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if not cmd:
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return
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cmd, _, line = cmd.partition(' ')
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try:
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parser = self.console._commands[cmd].create_parser()
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except KeyError:
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self.write("{!error!}Unknown command: %s" % cmd)
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return
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args = self.console._commands[cmd].split(line)
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# Do a little hack here to print 'command --help' properly
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parser._print_help = parser.print_help
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def print_help(f=None):
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parser._print_help(f)
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parser.print_help = print_help
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# Only these commands can be run when not connected to a daemon
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not_connected_cmds = ["help", "connect", "quit"]
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aliases = []
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for c in not_connected_cmds:
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aliases.extend(self.console._commands[c].aliases)
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not_connected_cmds.extend(aliases)
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if not client.connected() and cmd not in not_connected_cmds:
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self.write("{!error!}Not connected to a daemon, please use the connect command first.")
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return
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try:
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options, args = parser.parse_args(args)
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except Exception, e:
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self.write("{!error!}Error parsing options: %s" % e)
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return
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if not getattr(options, '_exit', False):
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try:
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ret = self.console._commands[cmd].handle(*args, **options.__dict__)
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except Exception, e:
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self.write("{!error!}" + str(e))
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log.exception(e)
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import traceback
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self.write("%s" % traceback.format_exc())
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return defer.succeed(True)
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else:
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return ret
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def set_batch_write(self, batch):
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"""
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When this is set the screen is not refreshed after a `:meth:write` until
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this is set to False.
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:param batch: set True to prevent screen refreshes after a `:meth:write`
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:type batch: bool
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"""
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self.batch_write = batch
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if not batch:
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self.refresh()
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def write(self, line):
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"""
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Writes a line out
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:param line: str, the line to print
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"""
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self.add_line(line, not self.batch_write)
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def tab_completer(self, line, cursor, second_hit):
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"""
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Called when the user hits 'tab' and will autocomplete or show options.
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If a command is already supplied in the line, this function will call the
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complete method of the command.
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:param line: str, the current input string
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:param cursor: int, the cursor position in the line
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:param second_hit: bool, if this is the second time in a row the tab key
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has been pressed
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:returns: 2-tuple (string, cursor position)
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"""
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# First check to see if there is no space, this will mean that it's a
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# command that needs to be completed.
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if " " not in line:
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possible_matches = []
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# Iterate through the commands looking for ones that startwith the
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# line.
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for cmd in self.console._commands:
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if cmd.startswith(line):
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possible_matches.append(cmd + " ")
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line_prefix = ""
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else:
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cmd = line.split(" ")[0]
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if cmd in self.console._commands:
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# Call the command's complete method to get 'er done
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possible_matches = self.console._commands[cmd].complete(line.split(" ")[-1])
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line_prefix = " ".join(line.split(" ")[:-1]) + " "
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else:
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# This is a bogus command
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return (line, cursor)
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# No matches, so just return what we got passed
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if len(possible_matches) == 0:
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return (line, cursor)
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# If we only have 1 possible match, then just modify the line and
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# return it, else we need to print out the matches without modifying
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# the line.
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elif len(possible_matches) == 1:
|
|
new_line = line_prefix + possible_matches[0]
|
|
return (new_line, len(new_line))
|
|
else:
|
|
if second_hit:
|
|
# Only print these out if it's a second_hit
|
|
self.write(" ")
|
|
for match in possible_matches:
|
|
self.write(match)
|
|
else:
|
|
p = " ".join(line.split(" ")[:-1])
|
|
new_line = " ".join([p, os.path.commonprefix(possible_matches)])
|
|
if len(new_line) > len(line):
|
|
line = new_line
|
|
cursor = len(line)
|
|
return (line, cursor)
|
|
|
|
|
|
def tab_complete_torrent(self, line):
|
|
"""
|
|
Completes torrent_ids or names.
|
|
|
|
:param line: str, the string to complete
|
|
|
|
:returns: list of matches
|
|
|
|
"""
|
|
possible_matches = []
|
|
|
|
# Find all possible matches
|
|
for torrent_id, torrent_name in self.torrents:
|
|
if torrent_id.startswith(line):
|
|
possible_matches.append(torrent_id + " ")
|
|
if torrent_name.startswith(line):
|
|
possible_matches.append(torrent_name + " ")
|
|
|
|
return possible_matches
|
|
|
|
def get_torrent_name(self, torrent_id):
|
|
"""
|
|
Gets a torrent name from the torrents list.
|
|
|
|
:param torrent_id: str, the torrent_id
|
|
|
|
:returns: the name of the torrent or None
|
|
"""
|
|
|
|
for tid, name in self.torrents:
|
|
if torrent_id == tid:
|
|
return name
|
|
|
|
return None
|
|
|
|
def match_torrent(self, string):
|
|
"""
|
|
Returns a list of torrent_id matches for the string. It will search both
|
|
torrent_ids and torrent names, but will only return torrent_ids.
|
|
|
|
:param string: str, the string to match on
|
|
|
|
:returns: list of matching torrent_ids. Will return an empty list if
|
|
no matches are found.
|
|
|
|
"""
|
|
ret = []
|
|
for tid, name in self.torrents:
|
|
if tid.startswith(string) or name.startswith(string):
|
|
ret.append(tid)
|
|
|
|
return ret
|
|
|
|
def on_torrent_added_event(self, event):
|
|
def on_torrent_status(status):
|
|
self.torrents.append((event.torrent_id, status["name"]))
|
|
client.core.get_torrent_status(event.torrent_id, ["name"]).addCallback(on_torrent_status)
|
|
|
|
def on_torrent_removed_event(self, event):
|
|
for index, (tid, name) in enumerate(self.torrents):
|
|
if event.torrent_id == tid:
|
|
del self.torrents[index]
|