For example, say I moved a file from /project/file.cs to /project/subdir/file.cs. It would be nice if nautilus automatically converted this to bzr mv /project/file.cs /project/subdir/file.cs. Is it possible to set this up?
It would also be nice if I was warned when doing a plain old mv on version controlled files, but I suppose that's a separate question.
This is a great idea, but I think nautilus-bzr does no include it yet, try it, I'm not sure.
As one of the developers of RabbitVCS, I'm pretty sure such a thing is not currently possible. Nautilus extensions can provide context menus, property pages, additional columns and they can respond to a file being displayed in the browser main window. They can't hook into arbirtary events like moving or deletion. (I'd love it if that were the case, but it's not a priority for us right now.) You would have modify the Nautilus extension API yourself.
If you're feeling up to that, but don't know where to start, you should look at the Nautilus source and ask on the Nautilus mailing list. They could certainly tell you if you're barking up the wrong tree about this.
It's possible that a Nautilus extension is the wrong place for this sort of thing. It might be possible to do something with GVFS instead of a Nautilus extension, but I'm out of my depth on that.
Like you already indicated yourself you basically need something that listens for moves, so I thought I'd code something up that would give you an indication of how this would work.
I tried using gio.FileMonitor but eventually went back to using plain old pyinotify because the latter has built-in support for detecting file renames/moves.
import pyinotify
import bzrlib
from bzrlib.workingtree import WorkingTree
from bzrlib.errors import NotBranchError, BzrRenameFailedError
directories_to_watch = [
# Add the paths to your working copies / branches to watch here
]
wm = pyinotify.WatchManager()
# When you listen to both MOVED_FROM and MOVED_TO the event for MOVED_TO will include both
# pathname (new path) and src_pathname (previous path).
mask = pyinotify.IN_MOVED_FROM | pyinotify.IN_MOVED_TO
class EventHandler(pyinotify.ProcessEvent):
def process_IN_MOVED_TO(self, event):
try:
tree, path = WorkingTree.open_containing(event.src_pathname)
root = event.src_pathname[:-len(path)] # Ugh, hackish
if not path.startswith(".bzr"): # Also hackish (to exclude events for anything in the .bzr subdirectory)
try:
tree.lock_tree_write()
source = event.src_pathname[len(root):] # Again hackish
target = event.pathname[len(root):] # Same
tree.rename_one(source, target)
print "Renamed %s to %s" % (source, target)
except BzrRenameFailedError: # Same
pass
finally:
tree.unlock()
except NotBranchError:
return
handler = EventHandler()
notifier = pyinotify.Notifier(wm, handler)
for path in directories_to_watch:
wdd = wm.add_watch(path, mask, rec=True, auto_add=True)
print "Recursively watching %s" % path
notifier.loop()
Here's how it works:
$ mv afile bfile
$ bzr status
renamed:
afile => bfile
$ mv bfile foobar/
$ bzr status
renamed:
afile => foobar/bfile
$ mv foobar/ zoobar
$ bzr status
renamed:
afile => zoobar/bfile
foobar/ => zoobar/
$ mv zoobar/ foobar
$ bzr status
renamed:
afile => foobar/bfile
$ mv foobar/bfile afile
And we're back where we got started ;-)
[edit]
If you don't want to manually list the various directories to watch it might be a good idea to write a Nautilus extension which keeps track of the various working copies it encounters as you navigate. Here's something to get you started (this goes into ~/.nautilus/python-extensions):
import os
import pickle
import nautilus
import gio
from xdg import BaseDirectory as basedir
import bzrlib
from bzrlib.workingtree import WorkingTree
from bzrlib.errors import NotBranchError
class BzrMonitor(nautilus.InfoProvider, nautilus.MenuProvider):
data_directory = basedir.save_data_path("bzrmonitor")
data_filename = os.path.join(data_directory, "workingcopies.db")
def __init__(self):
print "Initializing BzrMonitor extension..."
try:
data_file = open(self.data_filename, "r")
self.data = pickle.load(data_file)
except IOError:
self.data = []
data_file = open(self.data_filename, "w")
pickle.dump(self.data, data_file)
data_file.close()
def detect_and_save_branch(self, path):
try:
tree, rel_path = WorkingTree.open_containing(path)
# TODO: Still can't figure out how to get the path from the tree itself
if len(rel_path) > 0:
root = path[:-len(rel_path)]
else:
root = path
root = root.rstrip(os.path.sep)
if root not in self.data:
print "Added not seen before branch %s to cache..." % root
self.data.append(root)
data_file = open(self.data_filename, "w")
pickle.dump(self.data, data_file)
data_file.close()
except NotBranchError:
return
def update_file_info(self, item):
"""
This function is called when:
- When you enter a directory (once for each item but only when the
item was modified since the last time it was listed)
- When you refresh (once for each item visible)
- When an item viewable from the current window is created or modified
"""
self.detect_and_save_branch(gio.File(item.get_uri()).get_path())
def get_file_items(self, window, items):
"""
Menu activated with items selected. Nautilus also calls this function
when rendering submenus, even though this is not needed since the entire
menu has already been returned.
"""
pass
def get_background_items(self, window, item):
"""
Menu activated on entering a directory. Builds context menu for File
menu and for window background.
"""
self.detect_and_save_branch(gio.File(item.get_uri()).get_path())
I borrowed the various docstrings from RabbitVCS's extension code ;-)
In your monitor you'll probably want to watch the workingcopies.db file for additions and register watches on any new working copies it has found.
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