add the latest-by-tag command (patch provided by Dan Berrange)

cli/koji

@@ -1589,6 +1589,43 @@ def anon_handle_latest_pkg(options, session, args):
         for line in output:
             print line
 
+def anon_handle_latest_by_tag(options, session, args):
+    "Print the latest packages for each tag"
+    usage = _("usage: %prog latest-by-tag [options] package [package...]")
+    usage += _("\n(Specify the --help global option for a list of other help options)")
+    parser = OptionParser(usage=usage)
+    parser.add_option("--quiet", action="store_true", help=_("Do not print the header information"))
+    parser.add_option("--paths", action="store_true", help=_("Show the file paths"))
+    (options, args) = parser.parse_args(args)
+    if len(args) == 0:
+        parser.error(_("A package name must be specified"))
+        assert False
+    activate_session(session)
+    pathinfo = koji.PathInfo()
+
+    for pkg in args:
+        tags = [x['name'] for x in session.listTags(package=pkg)]
+        tags.sort()
+
+        for tag in tags:
+            data = session.getLatestBuilds(tag, package=pkg)
+            if options.paths:
+                for x in data:
+                    x['path'] = pathinfo.build(x)
+                    x['tag_name'] = tag
+                fmt = "%(path)-40s  %(tag_name)-30s  %(owner_name)s"
+            else:
+                for x in data:
+                    x['tag_name'] = tag
+                fmt = "%(nvr)-40s  %(tag_name)-30s  %(owner_name)s"
+            if not options.quiet:
+                print "%-40s  %-30s  %s" % ("Build", "Tag", "Built by")
+                print "%s  %s  %s" % ("-"*40, "-"*30, "-"*16)
+                options.quiet = True
+
+            for datum in data:
+                print fmt % datum
+
 def anon_handle_list_api(options, session, args):
     "Print the list of XML-RPC APIs"
     usage = _("usage: %prog list-api [options]")