xbps-src: follow target names from xbps utils.

Some targets have been renamed:
	info		-> show
	list-files	-> show-files
Added a new target to print reverse dependencies for a package:
	show-revdeps

xbps-src/shutils/show_revdeps.sh

@@ -0,0 +1,44 @@
+#-
+# Copyright (c) 2011 Juan Romero Pardines.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#-
+
+show_pkg_revdeps()
+{
+	local f revdepname tmplf
+
+	[ -z "$1" ] && return 1
+
+	for f in $(find ${XBPS_SRCPKGDIR} -type f -name \*template); do
+		if ! egrep -q "^Add_dependency[[:blank:]]+(run|full|build)[[:blank:]]+${1}$" $f; then
+			continue
+		fi
+		tmplf=$(basename $f)
+		if [ "$tmplf" != template ]; then
+			revdepname=${tmplf%.template}
+		else
+			revdepname=$(basename $(dirname $f))
+		fi
+		echo $revdepname
+	done
+}