Merge commit 'refs/top-bases/fixes/tg--r-require-arg' into fixes/tg--r-require-arg

[topgit.git] / tg-prev.sh

diff --git a/tg-prev.sh b/tg-prev.sh
new file mode 100644 (file)
index 0000000..1f1e0c1
--- /dev/null
+++ b/tg-prev.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+# TopGit - A different patch queue manager
+# (c) Petr Baudis <pasky@suse.cz>  2008
+# (c) Bert Wesarg <Bert.Wesarg@googlemail.com>  2009
+# GPLv2
+
+name=
+head_from=
+
+
+## Parse options
+
+while [ -n "$1" ]; do
+       arg="$1"; shift
+       case "$arg" in
+       -i|-w)
+               [ -z "$head_from" ] || die "-i and -w are mutually exclusive"
+               head_from="$arg";;
+       -*)
+               echo "Usage: tg next [-i | -w] [NAME]" >&2
+               exit 1;;
+       *)
+               [ -z "$name" ] || die "name already specified ($name)"
+               name="$arg";;
+       esac
+done
+
+head="$(git rev-parse --abbrev-ref=loose HEAD)"
+[ -n "$name" ] ||
+       name="$head"
+base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
+       die "not a TopGit-controlled branch"
+
+# select .topdeps source for HEAD branch
+[ "x$name" = "x$head" ] ||
+       head_from=
+
+cat_file "$name:.topdeps" $head_from