~azzar1/unity/add-show-desktop-key

#!/usr/bin/python

# IVLE - Informatics Virtual Learning Environment

# Copyright (C) 2007-2008 The University of Melbourne

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

# Author: David Coles, Will Grant

'''

A script for generating a Subversion diff. It is intended to be run via

trampoline by ivle.webapp.filesystem.diff.DiffView.

'''

import os

import sys

import cjson

import pysvn

import ivle.svn

# Default revisions

revs = [pysvn.Revision(x) for x in [pysvn.opt_revision_kind.base,

                                    pysvn.opt_revision_kind.working]]

# Override revisions from argv.

for ri in range(len(sys.argv[2:4])):

    r = ivle.svn.revision_from_string(sys.argv[2 + ri])

    if r is not None:

        revs[ri] = r

# Attempt to get the diff for these revisons

try:

    svnclient = pysvn.Client()

    svnclient.exception_style = 1

    diff = svnclient.diff

    # pysvn's diff tempfile behaviour changes with Subversion 1.6.x.

    # < 1.6 wants a filename, >= 1.6 wants a directory.

    if pysvn.svn_version > (1, 6):

        tmp_path = '/tmp'

    else:

        tmp_path = '/tmp/svndiff'

    diff_text = diff(tmp_path,

        os.path.join('/home', sys.argv[1]),

        revision1=revs[0],

        revision2=revs[1]

    )

    print cjson.encode({'diff': diff_text})

except pysvn.ClientError, e:

    error = e[0]

    try:

        code = e[1][0][1]

        # See subversion/include/svn_error_codes.h.

        # 150000: ERR_ENTRY_NOT_FOUND

        # 155007: WC_NOT_DIRECTORY.

        # 160013: FS_NOT_FOUND

        # 200005: UNVERSIONED_RESOURCE

        if code in (150000, 155007, 160013, 200005):

            error = 'notfound'

        else:

            error = '%s (code %d)' % (error, code) 

    except IndexError:

        pass

    print cjson.encode({'error': error})