-#!/usr/bin/env python
-import sys
+#!/bin/sh
+"""": # -*-python-*-
+bup_python="$(dirname "$0")/bup-python" || exit $?
+exec "$bup_python" "$0" ${1+"$@"}
+"""
+# end of bup preamble
+
+from __future__ import absolute_import, print_function
+import re, sys
+
from bup import options
-from bup.helpers import *
+from bup import version
+
+version_rx = re.compile(r'^[0-9]+\.[0-9]+(\.[0-9]+)?(-[0-9]+-g[0-9abcdef]+)?$')
optspec = """
bup version [--date|--commit|--tag]
commit display the git commit id of this version of bup
tag display the tag name of this version. If no tag is available, display the commit id
"""
-o = options.Options('bup version', optspec)
+o = options.Options(optspec)
(opt, flags, extra) = o.parse(sys.argv[1:])
if total > 1:
o.fatal('at most one option expected')
+
+def version_date():
+ """Format bup's version date string for output."""
+ return version.DATE.split(' ')[0]
+
+
+def version_commit():
+ """Get the commit hash of bup's current version."""
+ return version.COMMIT
+
+
+def version_tag():
+ """Format bup's version tag (the official version number).
+
+ When generated from a commit other than one pointed to with a tag, the
+ returned string will be "unknown-" followed by the first seven positions of
+ the commit hash.
+ """
+ names = version.NAMES.strip()
+ assert(names[0] == '(')
+ assert(names[-1] == ')')
+ names = names[1:-1]
+ l = [n.strip() for n in names.split(',')]
+ for n in l:
+ if n.startswith('tag: ') and version_rx.match(n[5:]):
+ return n[5:]
+ return 'unknown-%s' % version.COMMIT[:7]
+
+
if opt.date:
- print version_date()
+ print(version_date())
elif opt.commit:
- print version_commit()
+ print(version_commit())
else:
- print version_tag()
+ print(version_tag())