#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# run debuild in a git repository
#
# (C) 2006 Guido Guenther <agx@sigxcpu.org>
#    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import sys,os,commands,re
import optparse
from git_buildpackage import GitTag, Command, CommandExecFailed
from git_buildpackage.git_utils import *
from git_buildpackage.deb_utils import *

build_cmd='debuild'
output_dir='../'
    

def orig_file(cp):
    "The name of the orig.tar.gz belongig to changelog cp"
    return "%s_%s.orig.tar.gz" % (cp['Source'], cp['Upstream-Version'])


def is_native(cp):
    "Is this a debian native package"
    return [ True, False ]['-' in cp['Version']]


def has_orig(cp, dir):
    "Check if orig.tar.gz exists in dir"
    try:
        os.stat("%s%s" % (dir,orig_file(cp)))
    except OSError:
        return False
    return True


def create_orig(cp, dir, branch):
    "create an orig.tar.gz"
    output='%s%s' % (dir, orig_file(cp))
    try: # subprocess modules uses memory buffers, so we use '|' directly here:
        os.system('git-archive --format=tar --prefix=%s-%s/ %s | gzip -c -9 > %s'
              % (cp['Source'], cp['Upstream-Version'], branch, output))
    except:
        print("Error creating %s" % (output))
        return False
    return True


def main(argv):
    args = [ arg for arg in argv[1:] if arg.find('--git-') == 0 ]
    dpkg_args = [ arg for arg in argv[1:] if arg.find('--git-') == -1 ]

    if "--help" in dpkg_args:
        args.append('--help')

    parser=optparse.OptionParser()
    parser.add_option("--git-ignore-new", action="store_true", dest="ignore_new", default=False,
                      help="build with incommited changes in the source tree")
    parser.add_option("--git-tag", action="store_true", dest="tag", default=False,
                      help="build with uncommited changes in the source tree")
    parser.add_option("--git-builder", dest="build_cmd", default=build_cmd,
                      help="command to build the package e.g. default is 'debuild'")
    parser.add_option("--git-verbose", action="store_true", dest="verbose", default=False,
                      help="verbose command execution")
    parser.add_option("--upstream-branch", dest="upstream_branch", default='upstream',
                      help="name of the upstream branch, default is 'upstream'")
    (options, args) = parser.parse_args(args)

    if options.verbose:
        Command.verbose = True

    if not is_repository('.'):
        print >>sys.stderr,"%s is not a git repository" % (os.path.abspath('.'))
        return 1

    try:
        if not options.ignore_new:
            Command(options.build_cmd,['clean'])()
            (ret, out) = is_repository_clean('.')
            if not ret:
                print >>sys.stderr, "You have uncommitted changes in your source tree:"
                print >>sys.stderr, out
                print >>sys.stderr, "Use --git-ignore_new to ignore."
                return 1
        cp = parse_changelog('debian/changelog')
        if not is_native(cp) and not has_orig(cp, output_dir):
            print "%s does not exist, creating from branch %s" % (orig_file(cp), options.upstream_branch)
            if not create_orig(cp, output_dir, options.upstream_branch):
                return 1
        Command(options.build_cmd,[ '-i.git', '-I.git' ]+dpkg_args)()
        if options.tag:
            try:
                version=cp['Version']
            except KeyError:
                print >>sys.stderr,"Can't parse version from changes file"
                return 1
            else:
                print "Tagging", version
                if not GitTag()(sanitize_version(version)): return 1
    except CommandExecFailed:
        return 1
    return 0

if __name__ == '__main__':
    sys.exit(main(sys.argv))

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