~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

# Script: diffservice

# Author: David Coles

# Date:   26/2/2008

# A CGI script for generating a diff report page in HTML. It is intended to be 

# run from the trampoline by the Diff application.

from common import cgirequest

import cgi

import os.path

import pysvn

import re

def htmlfy_diff(difftext):

    """Adds HTML markup to a udiff string"""

    output = cgi.escape(difftext)

    subs = {

     r'^([\+\-]{3})\s(\S+)\s\((.+)\)$':

         r'<span class="diff-files">\1 \2 <em>(\3)</em></span>',

     r'^\@\@ (.*) \@\@$':

         r'<span class="diff-range">@@ \1 @@</span>',

     r'^\+(.*)$':

         r'<span class="diff-add">+\1</span>',

     r'^\-(.*)$':

         r'<span class="diff-sub">-\1</span>',

     r'^\\(.*)$':

         r'<span class="diff-special">\\\1</span>'

    }

    for match in subs:

        output = re.compile(match, re.MULTILINE).sub(subs[match], output)

    return output

def get_revision(r_str):

    """ Returns a Revison object for pysvn from a r query string """

    if r_str == "HEAD":

        return pysvn.Revision( pysvn.opt_revision_kind.head )

    elif r_str == "WORKING":

        return pysvn.Revision( pysvn.opt_revision_kind.working )

    elif r_str == "BASE":

        return pysvn.Revision( pysvn.opt_revision_kind.base )

    else:

        try:

            r = int(r_str)

            return pysvn.Revision( pysvn.opt_revision_kind.number, r)

        except:

            return None

# Use a CGIRequest object to make the CGI environment look like the normal

# IVLE handler environment.

req = cgirequest.CGIRequest()

req.content_type = "text/html"

# Beginning of the page

req.write('<div id="ivle_padding">\n')

req.write('<h1>Diff</h1>\n')

# Default revisions

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

                                    pysvn.opt_revision_kind.working]]

# Override revisions from query string

fields = req.get_fieldstorage()

field_r = fields.getlist("r")

for ri in range(len(field_r)):

    r = get_revision(field_r[ri])

    if r is not None:

        revs[ri] = r

# Attempt to get the diff for these revisons

try:

    svnclient = pysvn.Client()

    diff = svnclient.diff

    diff_text = diff( '/tmp/svndiff',

        os.path.join('/home', req.path),

        revision1=revs[0],

        revision2=revs[1]

    )

    # Split up the udiff into individual files

    diff_matcher = re.compile(

        r'^Index: (.*)\n\=+\n((?:[^I].*\n)*)',re.MULTILINE

    )

    split_diff = diff_matcher.findall(diff_text)

    # Prints output

    for filediff in split_diff:

        filename = filediff[0]

        diffbody = htmlfy_diff(filediff[1])

        req.write('<p><b>File:</b> %s</p>\n'

            % cgi.escape(filename))

        req.write('<pre class="diff">%s</pre>\n' % diffbody)

except pysvn._pysvn_2_5.ClientError, e:

    req.write('<p><b>Error:</b></p>\n')

    req.write('<pre class="diff">%s</pre>\n' % cgi.escape(str(e)))

req.write('</div>\n')