cvs2svn_rcsparse/update

   1 #!/usr/bin/env python
   2
   3 """Update the rcsparse library from ViewVC."""
   4
   5 import sys
   6 import os
   7 import subprocess
   8 import re
   9 import optparse
  10
  11
  12 VIEWVC_REPOS = 'http://viewvc.tigris.org/svn/viewvc'
  13 BRANCH = 'trunk'
  14 RCSPARSE_URL = '/'.join([VIEWVC_REPOS, BRANCH, 'lib/vclib/ccvs/rcsparse'])
  15 LICENSE_URL = '/'.join([VIEWVC_REPOS, BRANCH, 'LICENSE.html'])
  16
  17 DEST = os.path.dirname(__file__)
  18
  19 INIT_TEXT = """\
  20 # This file causes Python to treat its containing directory it as a
  21 # package.  Please note that the contents of this file differ from
  22 # those of the __init__.py file distributed with ViewVC.
  23
  24 """
  25
  26
  27 def get_current_revision():
  28     revision_re = re.compile(r'^Revision\:\s*(?P<revision>\d+)$')
  29
  30     cmd = ['svn', 'info', VIEWVC_REPOS]
  31     sys.stderr.write('%s\n' % (' '.join(cmd),))
  32     p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
  33     (out, err) = p.communicate()
  34     for line in out.splitlines():
  35         m = revision_re.match(line)
  36         if m:
  37             return int(m.group('revision'))
  38
  39     sys.exit(
  40         'Could not determine the current revision of the ViewVC repository!'
  41         )
  42
  43 def export(url, revision, dest):
  44     cmd = ['svn', 'export', '-r', str(revision), '--force', url, dest]
  45     sys.stderr.write('%s\n' % (' '.join(cmd),))
  46     retcode = subprocess.call(cmd)
  47
  48     if retcode:
  49         sys.exit('Export failed!')
  50
  51
  52 def main(args):
  53     parser = optparse.OptionParser(
  54         description=__doc__,
  55         )
  56
  57     parser.add_option(
  58         '--revision', '-r', metavar='REV',
  59         action='store', type='int', default=None,
  60         help='download the specific revision REV',
  61         )
  62
  63     (options, args) = parser.parse_args(args)
  64
  65     if args:
  66         parser.error('Unexpected arguments: %s' % (' '.join(args),))
  67
  68     if options.revision is None:
  69         options.revision = get_current_revision()
  70
  71     export(RCSPARSE_URL, options.revision, DEST)
  72     export(LICENSE_URL, options.revision, os.path.join(DEST, 'LICENSE.html'))
  73
  74     # Record which version of the upstream source was downloaded:
  75     open(os.path.join(DEST, 'UPSTREAM_SOURCE'), 'w').write(
  76         '%s@%d\n' % (RCSPARSE_URL, options.revision,)
  77         )
  78
  79     # Replace the upstream __init__.py file, which does some stuff that we
  80     # don't want:
  81     open(os.path.join(DEST, '__init__.py'), 'w').write(INIT_TEXT)
  82
  83
  84 main(sys.argv[1:])
  85