[[Evince]] > [[fwdevince>Evince/fwdevince]] > Python

*fwdevince の例示ソース [#u6122dc4]

fwdevince(Evince で forward and inverse search を行うツール)の Python による例示ソースです.

[[Arch Linux>Linux/Arch Linux]] の Evince 3.18.0, Python 3.5.0, dbus-python 1.2.0, PyGObject 3.18.0 で動作確認しています.~
[[Arch Linux>Linux/Arch Linux]] の Evince 3.18.2, Python 3.5.1, dbus-python 1.2.0, PyGObject 3.18.2 で動作確認しています.~
fwdevince がうまく動作しない場合は

-[[Okular]], [[zathura]], [[qpdfview]] などの Evince 以外の SyncTeX 対応ビューアで forward and inverse search を実行する
-[[TeXstudio]], [[Texmaker]], [[TeXworks]] の組み込みビューアで forward and inverse search を実行する
-fwdevince をうまく動作するように修正する

などの方法で対処してください.~

----
-fwdevince
----
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
 import dbus
 import argparse
 import os.path
 import traceback
 import sys
 import urllib.parse
 
 class EvinceForwardSearch:
     def parse_args(self):
         parser = argparse.ArgumentParser(description='Forward search with Evince')
         parser.add_argument('pdf', nargs=1, help='PDF file')
         parser.add_argument('line', nargs=1, type=int, help='Line')
         parser.add_argument('tex', nargs=1, help='TeX file')
         return parser.parse_args()
 
     def run(self):
         args = self.parse_args()
         pdf = os.path.abspath(args.pdf[0]).replace(" ", "%20")
         line = int(args.line[0])
         tex = os.path.join(os.path.dirname(os.path.abspath(args.tex[0])), './', os.path.basename(os.path.abspath(args.tex[0])))
 
         try:
             import time
             bus = dbus.SessionBus()
             daemon = bus.get_object('org.gnome.evince.Daemon', '/org/gnome/evince/Daemon')
             dbus_name = daemon.FindDocument('file://' + urllib.parse.quote(pdf, safe="%/:=&?~#+!$,;'@()*[]"), True, dbus_interface='org.gnome.evince.Daemon')
             window = bus.get_object(dbus_name, '/org/gnome/evince/Window/0')
             time.sleep(0.2)
             window.SyncView(tex, (line, 1), 0, dbus_interface='org.gnome.evince.Window')
         except dbus.DBusException:
             traceback.print_exc()
 
 class EvinceInverseSearch:
     def parse_args(self):
         parser = argparse.ArgumentParser(description='Inverse search with Evince')
         parser.add_argument('pdf', nargs=1, help='PDF file')
         parser.add_argument('editor', nargs=1, help='Editor command')
         return parser.parse_args()
 
     def run(self):
         import dbus.mainloop.glib
         from gi.repository import GObject
         args = self.parse_args()
         pdf = os.path.abspath(args.pdf[0])
         editor = args.editor[0]
         dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
         a = EvinceWindowProxy('file://' + pdf, editor, True)
         loop = GObject.MainLoop()
         loop.run()
 
 class EvinceWindowProxy:
     """A Dbus proxy for an Evince Window."""
     daemon = None
     bus = None
 
     RUNNING = range(2)
     CLOSED = range(2)
     EV_DAEMON_PATH = '/org/gnome/evince/Daemon'
     EV_DAEMON_NAME = 'org.gnome.evince.Daemon'
     EV_DAEMON_IFACE = 'org.gnome.evince.Daemon'
 
     EVINCE_PATH = '/org/gnome/evince/Evince'
     EVINCE_IFACE = 'org.gnome.evince.Application'
 
     EV_WINDOW_IFACE = 'org.gnome.evince.Window'
 
     def __init__(self, uri, editor, apawn=False, logger=None):
         self._log = logger
         self.uri = uri.replace(" ", "%20")
         self.editor = editor
         self.status = self.CLOSED
         self.source_handler = None
         self.dbus_name = ''
         self._handler = None
         try:
             if EvinceWindowProxy.bus is None:
                 EvinceWindowProxy.bus = dbus.SessionBus()
 
             if EvinceWindowProxy.daemon is None:
                 EvinceWindowProxy.daemon = EvinceWindowProxy.bus.get_object(self.EV_DAEMON_NAME,
                     self.EV_DAEMON_PATH,
                     follow_name_owner_changes=True)
             EvinceWindowProxy.bus.add_signal_receiver(self._on_doc_loaded,
                 signal_name='DocumentLoaded',
                 dbus_interface=self.EV_WINDOW_IFACE,
                 sender_keyword='sender')
             self._get_dbus_name(False)
         except dbus.DBusException:
             traceback.print_exc()
             if self._log:
                 self._log.debug('Could not connect to the Evince Daemon')
 
     def _on_doc_loaded(self, uri, **keyargs):
         if uri == self.uri and self._handler is None:
             self.handle_find_document_reply(keyargs['sender'])
 
     def _get_dbus_name(self, spawn):
         EvinceWindowProxy.daemon.FindDocument(self.uri, spawn,
                      reply_handler=self.handle_find_document_reply,
                      error_handler=self.handle_find_document_error,
                      dbus_interface = self.EV_DAEMON_IFACE)
 
     def handle_find_document_error(self, error):
         if self._log:
             self._log.debug('FindDocument DBus call has failed')
 
     def handle_find_document_reply(self, evince_name):
         if self._handler is not None:
             handler = self._handler
         else:
             handler = self.handle_get_window_list_reply
         if evince_name != '':
             self.dbus_name = evince_name
             self.status = self.RUNNING
             self.evince = EvinceWindowProxy.bus.get_object(self.dbus_name, self.EVINCE_PATH)
             self.evince.GetWindowList(dbus_interface = self.EVINCE_IFACE,
                           reply_handler = handler,
                           error_handler = self.handle_get_window_list_error)
 
     def handle_get_window_list_error (self, e):
         if self._log:
             self._log.debug("GetWindowList DBus call has failed")
 
     def handle_get_window_list_reply (self, window_list):
         if len(window_list) > 0:
             window_obj = EvinceWindowProxy.bus.get_object(self.dbus_name, window_list[0])
             self.window = dbus.Interface(window_obj,self.EV_WINDOW_IFACE)
             self.window.connect_to_signal("SyncSource", self.on_sync_source)
         else:
             #That should never happen. 
             if self._log:
                 self._log.debug("GetWindowList returned empty list")
 
     def on_sync_source(self, input_file, source_link, timestamp):
         import subprocess
         import re
         print(input_file + ':' + str(source_link[0]))
         # This is probably useless
         input_file = input_file.replace("%20", " ")
         # This is to deal with source files with non-ascii names
         # We get url-quoted UTF-8 from dbus; convert to url-quoted ascii
         # and then unquote. If you don't first convert ot ascii, it fails.
         # It's a bit magical, but it seems to work
         #input_file = urllib.parse.unquote(input_file.encode('ascii'))
         input_file = urllib.parse.unquote(input_file)
         print(type(input_file), input_file)
         #cmd = re.sub("%f", input_file, self.editor)
         cmd = re.sub("%f", input_file.replace('file://', ''), self.editor)
         cmd = re.sub("%l", str(source_link[0]), cmd)
         print(cmd)
         subprocess.call(cmd, shell=True)
         if self.source_handler is not None:
             self.source_handler(input_file, source_link, timestamp)
 
 if __name__ == '__main__':
     cmd = os.path.basename(sys.argv[0])
     if cmd == 'fwdevince' or cmd == 'evince_forward_search':
         EvinceForwardSearch().run()
     elif cmd == 'invevince' or cmd == 'bwdevince' or cmd == 'evince_inverse_search' or cmd == 'evince_backward_search':
         EvinceInverseSearch().run()
     else:
         sys.stderr.write("rename 'fwdevince' or 'invevince'\n")
         sys.exit(1)
----

 $ chmod +x fwdevince
 $ sudo cp -p fwdevince /usr/local/bin
 $ sudo ln -s /usr/local/bin/fwdevince /usr/local/bin/invevince

fwdevince は例えば

 $ fwdevince hoge.pdf 30 hoge.tex

のように実行すると Evince が起動して PDF ファイルの対応する行が赤い枠で囲まれて表示されます.

invevince は例えば [[TeXstudio]] の場合は

 $ evince "hoge.pdf" &
 $ invevince "hoge.pdf" "texstudio '%f' -line %l"

のように実行して Evince 上で Ctrl + 左クリックを実行すると TeXstudio が起動して TeX 文書の対応する行にジャンプします.~