#!/usr/bin/python
"""
 svn.py
 Script for BuildBot to monitor a remote Subversion repository.
 Copyright (C) 2006 John Pye
"""
# This script is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA

import commands
import xml.dom.minidom
import ConfigParser
import os.path

# change these settings to match your project
svnurl = "https://pse.cheme.cmu.edu/svn/ascend/code/trunk"
statefilename = "~/changemonitor/config.ini"
buildmaster = "buildbot.example.org:9989" # connects to a PBChangeSource

xml1 = commands.getoutput(
    "svn log --non-interactive --verbose --xml --limit=1 " + svnurl)
#print "XML\n-----------\n"+xml1+"\n\n"

try:
    doc = xml.dom.minidom.parseString(xml1)
    el = doc.getElementsByTagName("logentry")[0]
    revision = el.getAttribute("revision")
    author = "".join([t.data for t in el.getElementsByTagName(
        "author")[0].childNodes])
    comments = "".join([t.data for t in el.getElementsByTagName(
        "msg")[0].childNodes])

    pathlist = el.getElementsByTagName("paths")[0]
    paths = []
    for p in pathlist.getElementsByTagName("path"):
        paths.append("".join([t.data for t in p.childNodes]))
    #print "PATHS"
    #print paths
except xml.parsers.expat.ExpatError, e:
    print "FAILED TO PARSE 'svn log' XML:"
    print str(e)
    print "----"
    print "RECEIVED TEXT:"
    print xml1
    import sys
    sys.exit(1)

fname = statefilename
fname = os.path.expanduser(fname)
ini = ConfigParser.SafeConfigParser()

try:
    ini.read(fname)
except:
    print "Creating changemonitor config.ini:", fname
    ini.add_section("CurrentRevision")
    ini.set("CurrentRevision", -1)

try:
    lastrevision = ini.get("CurrentRevision", "changeset")
except ConfigParser.NoOptionError:
    print "NO OPTION FOUND"
    lastrevision = -1
except ConfigParser.NoSectionError:
    print "NO SECTION FOUND"
    lastrevision = -1

if lastrevision != revision:

    #comments = codecs.encodings.unicode_escape.encode(comments)
    cmd = "buildbot sendchange --master="+buildmaster+" --branch=trunk \
--revision=\""+revision+"\" --username=\""+author+"\" --vc=\"svn\" \
--comments=\""+comments+"\" "+" ".join(paths)

    #print cmd
    res = commands.getoutput(cmd)

    print "SUBMITTING NEW REVISION", revision
    if not ini.has_section("CurrentRevision"):
        ini.add_section("CurrentRevision")
    try:
        ini.set("CurrentRevision", "changeset", revision)
        f = open(fname, "w")
        ini.write(f)
        #print "WROTE CHANGES TO",fname
    except:
        print "FAILED TO RECORD INI FILE"
