cvs2svn_lib/main.py

   1 #!/usr/bin/env python
   2 # (Be in -*- python -*- mode.)
   3 #
   4 # ====================================================================
   5 # Copyright (c) 2000-2009 CollabNet.  All rights reserved.
   6 #
   7 # This software is licensed as described in the file COPYING, which
   8 # you should have received as part of this distribution.  The terms
   9 # are also available at http://subversion.tigris.org/license-1.html.
  10 # If newer versions of this license are posted there, you may use a
  11 # newer version instead, at your option.
  12 #
  13 # This software consists of voluntary contributions made by many
  14 # individuals.  For exact contribution history, see the revision
  15 # history and logs, available at http://cvs2svn.tigris.org/.
  16 # ====================================================================
  17
  18 import os
  19 import tempfile
  20 import errno
  21
  22 try:
  23   # Try to get access to a bunch of encodings for use with --encoding.
  24   # See http://cjkpython.i18n.org/ for details.
  25   import iconv_codec
  26 except ImportError:
  27   pass
  28
  29 from cvs2svn_lib.common import FatalError
  30 from cvs2svn_lib.log import logger
  31 from cvs2svn_lib.svn_run_options import SVNRunOptions
  32 from cvs2svn_lib.git_run_options import GitRunOptions
  33 from cvs2svn_lib.bzr_run_options import BzrRunOptions
  34 from cvs2svn_lib.context import Ctx
  35 from cvs2svn_lib.pass_manager import PassManager
  36 from cvs2svn_lib.passes import passes
  37
  38
  39 def main(progname, run_options, pass_manager):
  40   # Convenience var, so we don't have to keep instantiating this Borg.
  41   ctx = Ctx()
  42
  43   # Make sure the tmp directory exists.  Note that we don't check if
  44   # it's empty -- we want to be able to use, for example, "." to hold
  45   # tempfiles.
  46   if ctx.tmpdir is None:
  47     ctx.tmpdir = tempfile.mkdtemp(prefix=('%s-' % (progname,)))
  48     erase_tmpdir = True
  49     logger.quiet(
  50       'Writing temporary files to %r\n'
  51       'Be sure to use --tmpdir=%r if you need to resume this conversion.'
  52       % (ctx.tmpdir, ctx.tmpdir,),
  53       )
  54   elif not os.path.exists(ctx.tmpdir):
  55     os.mkdir(ctx.tmpdir)
  56     erase_tmpdir = True
  57   elif not os.path.isdir(ctx.tmpdir):
  58     raise FatalError(
  59         "cvs2svn tried to use '%s' for temporary files, but that path\n"
  60         "  exists and is not a directory.  Please make it be a directory,\n"
  61         "  or specify some other directory for temporary files."
  62         % (ctx.tmpdir,))
  63   else:
  64     erase_tmpdir = False
  65
  66   # But do lock the tmpdir, to avoid process clash.
  67   try:
  68     os.mkdir(os.path.join(ctx.tmpdir, 'cvs2svn.lock'))
  69   except OSError, e:
  70     if e.errno == errno.EACCES:
  71       raise FatalError("Permission denied:"
  72                        + " No write access to directory '%s'." % ctx.tmpdir)
  73     if e.errno == errno.EEXIST:
  74       raise FatalError(
  75           "cvs2svn is using directory '%s' for temporary files, but\n"
  76           "  subdirectory '%s/cvs2svn.lock' exists, indicating that another\n"
  77           "  cvs2svn process is currently using '%s' as its temporary\n"
  78           "  workspace.  If you are certain that is not the case,\n"
  79           "  then remove the '%s/cvs2svn.lock' subdirectory."
  80           % (ctx.tmpdir, ctx.tmpdir, ctx.tmpdir, ctx.tmpdir,))
  81     raise
  82
  83   try:
  84     if run_options.profiling:
  85       try:
  86         import cProfile
  87       except ImportError:
  88         # Old version of Python without cProfile.  Use hotshot instead.
  89         import hotshot
  90         prof = hotshot.Profile('cvs2svn.hotshot')
  91         prof.runcall(pass_manager.run, run_options)
  92         prof.close()
  93       else:
  94         # Recent version of Python (2.5+) with cProfile.
  95         def run_with_profiling():
  96           pass_manager.run(run_options)
  97         cProfile.runctx(
  98             'run_with_profiling()', globals(), locals(), 'cvs2svn.cProfile'
  99             )
 100     else:
 101       pass_manager.run(run_options)
 102   finally:
 103     try:
 104       os.rmdir(os.path.join(ctx.tmpdir, 'cvs2svn.lock'))
 105     except:
 106       pass
 107
 108     if erase_tmpdir:
 109       try:
 110         os.rmdir(ctx.tmpdir)
 111       except:
 112         pass
 113
 114
 115 def svn_main(progname, cmd_args):
 116   pass_manager = PassManager(passes)
 117   run_options = SVNRunOptions(progname, cmd_args, pass_manager)
 118   main(progname, run_options, pass_manager)
 119
 120
 121 def git_main(progname, cmd_args):
 122   pass_manager = PassManager(passes)
 123   run_options = GitRunOptions(progname, cmd_args, pass_manager)
 124   main(progname, run_options, pass_manager)
 125
 126
 127 def bzr_main(progname, cmd_args):
 128   pass_manager = PassManager(passes)
 129   run_options = BzrRunOptions(progname, cmd_args, pass_manager)
 130   main(progname, run_options, pass_manager)
 131
 132
 133 def hg_main(progname, cmd_args):
 134   # Import late so cvs2{svn,git} do not depend on being able to import
 135   # the Mercurial API.
 136   from cvs2svn_lib.hg_run_options import HgRunOptions
 137
 138   pass_manager = PassManager(passes)
 139   run_options = HgRunOptions(progname, cmd_args, pass_manager)
 140   main(progname, run_options, pass_manager)