1 files changed, 84 insertions, 0 deletions
diff --git a/gbp/scripts/supercommand.py b/gbp/scripts/supercommand.py
new file mode 100644
index 0000000..4f2721f
--- /dev/null
+++ b/gbp/scripts/supercommand.py
@@ -0,0 +1,84 @@
+#!/usr/bin/python
+# vim: set fileencoding=utf-8 :
+#
+# (C) 2013 Guido Günther <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
+"""Supercommand for all gbp commands"""
+
+import re
+import sys
+
+# Command is this module and common/ is shared code
+# so we don't allow these to be imported:
+invalid_modules = [ 'common', 'supercommand' ]
+
+def sanitize(cmd):
+    """
+    '-' is not allowed in module names
+    so turn it into an underscore.
+    """
+    return cmd.replace('-', '_')
+
+def usage():
+    print """
+Usage:
+    gbp <command> [<args>]
+
+The most commonly used commands are:
+
+    buildpackage - build a Debian package
+    import-orig  - import a new upstream tarball
+    import-dsc   - import a single Debian source package
+    import-dscs  - import multiple Debian source packages
+"""
+
+def import_command(modulename):
+    """
+    Import the module that implements the given command
+    """
+    if (not re.match(r'[a-z][a-z0-9_]', modulename) or
+        modulename in invalid_modules):
+        raise ImportError('Illegal module name %s' % modulename)
+
+    return __import__('gbp.scripts.%s' % modulename, fromlist='main', level=0)
+
+
+def supercommand(argv=None):
+    argv = argv or sys.argv
+
+    if len(argv) < 2:
+        usage()
+        return 1
+
+    cmd = argv[1]
+    args = argv[1:]
+
+    if cmd in ['--help', '-h']:
+        usage()
+        return 0
+
+    modulename = sanitize(cmd)
+    try:
+        module = import_command(modulename)
+    except ImportError as e:
+        print >>sys.stderr, "'%s' is not a valid command." % cmd
+        usage()
+        if '--verbose' in args:
+            print >>sys.stderr, e
+        return 2
+
+    return module.main(args)
+
+# vim:et:ts=4:sw=4:et:sts=4:ai:set list listchars=tab\:»·,trail\:·: