Add probabilistic "bup gc", but require --unsafe

[bup.git] / cmd / version-cmd.py

diff --git a/cmd/version-cmd.py b/cmd/version-cmd.py
index 3469086d1293c16afb4911ea36f91833f87f2446..fbbe24fee5984fe0007d5ca64e57127342450404 100755 (executable)
--- a/cmd/version-cmd.py
+++ b/cmd/version-cmd.py
@@ -1,7 +1,12 @@
-#!/usr/bin/env python
-import sys, os, glob
+#!/bin/sh
+"""": # -*-python-*-
+bup_python="$(dirname "$0")/bup-python" || exit $?
+exec "$bup_python" "$0" ${1+"$@"}
+"""
+# end of bup preamble
+import sys
 from bup import options
-from bup.helpers import *
+from bup import _version
 
 optspec = """
 bup version [--date|--commit|--tag]
@@ -10,7 +15,7 @@ date    display the date this version of bup was created
 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:])
 
 
@@ -18,6 +23,35 @@ total = (opt.date or 0) + (opt.commit or 0) + (opt.tag or 0)
 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: bup-'):
+            return n[9:]
+    return 'unknown-%s' % _version.COMMIT[:7]
+
+
 if opt.date:
     print version_date()
 elif opt.commit: