Add reverse-build-depends script.

debian/changelog

@@ -1,15 +1,16 @@
 ubuntu-dev-tools (0.25) UNRELEASED; urgency=low
 
   * what-patch:
-     - Print a list of files that have been modified outside debian/
+     - Print a list of files that have been modified outside debian/.
-     - Add -h and -q options
+     - Add -h and -q options.
-     - Add proper exit values
+     - Add proper exit values.
   * debian/control:
-     - Bump standards version to 3.7.3
+     - Bump standards version to 3.7.3.
-     - Move python-central to Build-Depends-Indep
+     - Move python-central to Build-Depends-Indep.
-     - Rename XS-Vcs-{Bzr,Browser} fields to Vcs-{Bzr,Browser}
+     - Rename XS-Vcs-{Bzr,Browser} fields to Vcs-{Bzr,Browser}.
-     - Bump minimum cdbs version to 0.4.49
+     - Bump minimum cdbs version to 0.4.49.
-  * Add Albert Damen to the Authors and Copyright Holders
+  * Add Albert Damen to the Authors and Copyright Holders.
+  * Add reverse-build-depends script.
 
  -- Siegfried-Angel Gevatter Pujals (RainCT) <rainct@ubuntu.com>  Sun, 06 Jan 2008 12:02:54 +0100
 

reverse-build-depends

@@ -0,0 +1,40 @@
+#!/bin/bash
+# Copyright (C) 2007 Siegfried-A. Gevatter <siggi.gevatter@gmail.com>
+# Based upon a short script by an unknown author
+# License: GPLv2+
+#
+# This script is used to find the reverse build dependencies
+# that a package has.
+
+usage() {
+	echo "Usage: $0 [-c] <package name>"
+}
+
+if [ "$1" = '-c' ]
+then
+	count=1
+	shift
+fi
+
+if [ $# -ne 1 ];
+then
+	usage
+	exit 1
+fi
+
+if [ "$1" = '-h' ] || [ "$1" = '--help' ]
+then
+	usage
+	exit 0
+fi
+
+result=$(
+	grep-dctrl -sPackage -F Build-Depends,Build-Depends-Indep $1 \
+	/var/lib/apt/lists/*Sources | cut -d ' ' -f 2)
+
+if [ -z $count ]
+then
+	echo $result
+else
+	echo $result | wc -w
+fi