# Minimal support for git commands on an hg repository

#

# Copyright 2005, 2006 Chris Mason <mason@suse.com>

#

# This software may be used and distributed according to the terms

# of the GNU General Public License, incorporated herein by reference.

'''browsing the repository in a graphical way

The hgk extension allows browsing the history of a repository in a

graphical way. It requires Tcl/Tk version 8.4 or later. (Tcl/Tk is

not distributed with Mercurial.)

hgk consists of two parts: a Tcl script that does the displaying and

querying of information, and an extension to mercurial named hgk.py,

which provides hooks for hgk to get information. hgk can be found in

the contrib directory, and hgk.py can be found in the hgext directory.

To load the hgext.py extension, add it to your .hgrc file (you have

to use your global $HOME/.hgrc file, not one in a repository). You

can specify an absolute path:

  [extensions]

  hgk=/usr/local/lib/hgk.py

Mercurial can also scan the default python library path for a file

named 'hgk.py' if you set hgk empty:

  [extensions]

  hgk=

The hg view command will launch the hgk Tcl script. For this command

to work, hgk must be in your search path. Alternately, you can

specify the path to hgk in your .hgrc file:

  [hgk]

  path=/location/of/hgk

hgk can make use of the extdiff extension to visualize revisions.

Assuming you had already configured extdiff vdiff command, just add:

  [hgk]

  vdiff=vdiff

Revisions context menu will now display additional entries to fire

vdiff on hovered and selected revisions.'''

import os

from mercurial import commands, util, patch, revlog, cmdutil

from mercurial.node import nullid, nullrev, short

def difftree(ui, repo, node1=None, node2=None, *files, **opts):

    """diff trees from two commits"""

    def __difftree(repo, node1, node2, files=[]):

        assert node2 is not None

        m = cmdutil.match(repo, files)

        status = repo.status(node1, node2, match=m)[:5]

        modified, added, removed, deleted, unknown = status

        empty = short(nullid)

        for f in modified:

            # TODO get file permissions