#!/usr/bin/python
#
# Copyright (C) 2006, Adam Cecile
#
# 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
#
#
# This Subversion post-commit hook script is meant to create sources tarball
# for releases.
#
# It should be called from the 'post-commit' script in Subversion, such as
# via:
#
# REPOS="${1}"
# REV="${2}"
# LOG=`/usr/bin/svnlook log -r ${REV} ${REPOS}`
# SOFT_NAME="test"
# SVN_URL="http://test.le-vert.net/svn"
# SVN_TAGS_BASE="/tags/"
# SVN_TAGS_APPEND="${SOFTNAME}"
# TARBALL_DIR="/data/repos/test/tarballs/"
#
# /usr/bin/python /data/trac/scripts/create-release-tarball \
#  "${LOG}"  \
#  "${SOFT_NAME}" \
#  "${SVN_URL}" \
#  "${SVN_TAGS_BASE}" \
#  "${SVN_TAGS_APPEND}" \
#  "${TARBALL_DIR}" 
#
# It searches commit messages for text like (Release: x.y.z) or
# (release    x.yz.y.v) in example.
#
# EXPLAINATION OF THE EXAMPLE ABOVE :
#
# If you add (Release: 0.1.1) to you commit comment, this hook will :
#    1. svn export http://test.le-vert.net/svn/tags/0.1.1/test \
#                  /tmp/test-0.1.1+"randomsuffix"
#    2. Create a tarball named test-0.1.1.tar.gz
#    3. Move the tarball to /data/repos/test/tarballs/
#
#
#  I hope you will like my hook, even I don't at all how to write real
#  Python code... Enjoy anyway ;-)



# Modules imports
import pysvn
import tempfile
import os
import sys
import re

# Get arguments
svn_log= sys.argv[1]
soft_name = sys.argv[2]
svn_url = sys.argv[3]
svn_tags_base = sys.argv[4]
svn_tags_append = sys.argv[5]
tarball_dir = sys.argv[6]

# Ok, this is the interresting point.
# We're looking for the release pattern in svn commit comment.
commandPattern = re.compile(r'\([rR]elease:{0,1} +([0-9.]+)\)')
if commandPattern.search(svn_log):
    # Get release number
    release_nb = commandPattern.findall(svn_log)[0]
    print 'Release pattern found ! Creating tarball for version '+release_nb+'.'
    
    # Create an unique temp directory
    svn_workdir = tempfile.mkdtemp('', soft_name+'-'+release_nb+'_')
    print "Working in " + svn_workdir
    
    # Export released sourcecode
    client = pysvn.Client()
    client.export(svn_url+'/'+svn_tags_base+'/'+release_nb+'/'+svn_tags_append, svn_workdir+'/'+soft_name+'-'+release_nb)
    
    # Move into svn_workdir
    os.chdir(svn_workdir)

    # Create the tar.gz cmd line, then execute it
    targzcmd='tar cvzf '+soft_name+'-'+release_nb+'.tar.gz '+soft_name+'-'+release_nb+'/ >/dev/null'
    print "Running "+targzcmd
    os.system(targzcmd)

    # Create the tar.bz2 cmd line, then execute it
    tarbz2cmd='tar cvjf '+soft_name+'-'+release_nb+'.tar.bz2 '+soft_name+'-'+release_nb+'/ >/dev/null'
    print "Running "+tarbz2cmd
    os.system(tarbz2cmd)

    # Move tarball gz into tarball_dir
    movgzcmd = 'mv '+svn_workdir+'/'+soft_name+'-'+release_nb+'.tar.gz '+tarball_dir
    print "Running "+movgzcmd
    os.system(movgzcmd)

    # Move tarball bz2 into tarball_dir
    movbz2cmd = 'mv '+svn_workdir+'/'+soft_name+'-'+release_nb+'.tar.bz2 '+tarball_dir
    print "Running "+movbz2cmd
    os.system(movbz2cmd)

    # Clean svn_workdir
    cleancmd = 'rm -rf '+svn_workdir
    os.system(cleancmd)
else:
    # Skip and exit
    print 'No release pattern found. Skipping this hook.'
    sys.exit(0)