From cc7a4acc31d7e4cf97a19b938416611288604913 Mon Sep 17 00:00:00 2001
From: mhagger <mhagger@be7e6eca-30d4-0310-a8e5-ac0d63af7087>
Date: Tue, 1 Sep 2009 07:19:40 +0000
Subject: [PATCH] Add cvs2hg top-level script.

Patch by: Greg Ward <greg@gerg.ca>

* cvs2hg: New script (copy of cvs2{svn,git} with an additional check
  of Mercural API version).

* cvs2svn_lib/main.py: Add hg_main().

git-svn-id: http://cvs2svn.tigris.org/svn/cvs2svn/trunk@4911 be7e6eca-30d4-0310-a8e5-ac0d63af7087
---
 cvs2hg              | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 cvs2svn_lib/main.py |  8 +++++
 2 files changed, 103 insertions(+)
 create mode 100755 cvs2hg

diff --git a/cvs2hg b/cvs2hg
new file mode 100755
index 00000000..d048c9d4
--- /dev/null
+++ b/cvs2hg
@@ -0,0 +1,95 @@
+#!/usr/bin/env python
+# (Be in -*- python -*- mode.)
+#
+# ====================================================================
+# Copyright (c) 2000-2008 CollabNet.  All rights reserved.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution.  The terms
+# are also available at http://subversion.tigris.org/license-1.html.
+# If newer versions of this license are posted there, you may use a
+# newer version instead, at your option.
+#
+# This software consists of voluntary contributions made by many
+# individuals.  For exact contribution history, see the revision
+# history and logs, available at http://cvs2svn.tigris.org/.
+# ====================================================================
+
+import sys
+
+# Make sure that a supported version of Python is being used.  Do this
+# as early as possible, using only code compatible with Python 1.5.2
+# and Python 3.x before the check.  Remember:
+#
+# Python 1.5.2 doesn't have sys.version_info or ''.join().
+# Python 3.0 doesn't have string.join().
+# There are plans to start deprecating the string formatting '%'
+# operator in Python 3.1 (but we use it here anyway).
+
+version_error = """\
+ERROR: cvs2hg requires Python 2, version 2.4 or later; it does not
+work with Python 3.  You are currently using"""
+
+version_advice = """\
+Please restart cvs2hg using a different version of the Python
+interpreter.  Visit http://www.python.org or consult your local system
+administrator if you need help.
+
+HINT: If you already have a usable Python version installed, it might
+be possible to invoke cvs2hg with the correct Python interpreter by
+typing something like 'python2.5 """ + sys.argv[0] + """ [...]'.
+"""
+
+try:
+  version = sys.version_info
+except AttributeError:
+  # This is probably a pre-2.0 version of Python.
+  sys.stderr.write(version_error + '\n')
+  sys.stderr.write('-'*70 + '\n')
+  sys.stderr.write(sys.version + '\n')
+  sys.stderr.write('-'*70 + '\n')
+  sys.stderr.write(version_advice)
+  sys.exit(1)
+
+if not ((2,4) <= version < (3,0)):
+  sys.stderr.write(
+      version_error + ' version %d.%d.%d.\n'
+      % (version[0], version[1], version[2],)
+      )
+  sys.stderr.write(version_advice)
+  sys.exit(1)
+
+hg_required = "ERROR: cvs2hg requires Mercurial 1.1 or later.\n"
+hg_missing = "(No Mercurial API found.)\n"
+hg_version = "(Attempted to use the Mercurial %s API in\n%s.)\n"
+
+
+import os
+try:
+  import mercurial
+  from mercurial import context, __version__
+  context.memctx                        # ensure Mercurial >= 1.1
+  context.memfilectx
+except ImportError:
+  sys.stderr.write(hg_required + hg_missing)
+  sys.exit(1)
+except AttributeError:
+  sys.stderr.write(hg_required +
+                   hg_version
+                   % (__version__.version,
+                      os.path.dirname(mercurial.__file__)))
+  sys.exit(1)
+
+import os
+
+from cvs2svn_lib.common import FatalException
+from cvs2svn_lib.main import hg_main
+
+
+try:
+  hg_main(os.path.basename(sys.argv[0]), sys.argv[1:])
+except FatalException, e:
+  sys.stderr.write(str(e) + '\n')
+  sys.exit(1)
+
+
diff --git a/cvs2svn_lib/main.py b/cvs2svn_lib/main.py
index f222de0c..a98e642e 100644
--- a/cvs2svn_lib/main.py
+++ b/cvs2svn_lib/main.py
@@ -115,3 +115,11 @@ def bzr_main(progname, cmd_args):
   main(progname, run_options, pass_manager)
 
 
+def hg_main(progname, cmd_args):
+  # Import late so cvs2{svn,git} do not depend on being able to import
+  # the Mercurial API.
+  from cvs2svn_lib.hg_run_options import HgRunOptions
+
+  pass_manager = PassManager(passes)
+  run_options = HgRunOptions(progname, cmd_args, pass_manager)
+  main(progname, run_options, pass_manager)
-- 
2.11.4.GIT