From d6ba86bf51ee417889ef75231e308eef33abe327 Mon Sep 17 00:00:00 2001
From: "Siegfried-Angel Gevatter Pujals (RainCT)" <sgevatter@ubuntu.cat>
Date: Sun, 13 Jan 2008 23:22:08 +0100
Subject: [PATCH] Add reverse-build-depends script.

---
 debian/changelog      | 17 +++++++++--------
 reverse-build-depends | 40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 8 deletions(-)
 create mode 100755 reverse-build-depends

diff --git a/debian/changelog b/debian/changelog
index 9ac5c4c..abcbac7 100644
--- a/debian/changelog
+++ b/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/
-     - Add -h and -q options
-     - Add proper exit values
+     - Print a list of files that have been modified outside debian/.
+     - Add -h and -q options.
+     - Add proper exit values.
   * debian/control:
-     - Bump standards version to 3.7.3
-     - Move python-central to Build-Depends-Indep
-     - Rename XS-Vcs-{Bzr,Browser} fields to Vcs-{Bzr,Browser}
-     - Bump minimum cdbs version to 0.4.49
-  * Add Albert Damen to the Authors and Copyright Holders
+     - Bump standards version to 3.7.3.
+     - Move python-central to Build-Depends-Indep.
+     - Rename XS-Vcs-{Bzr,Browser} fields to Vcs-{Bzr,Browser}.
+     - Bump minimum cdbs version to 0.4.49.
+  * 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
 
diff --git a/reverse-build-depends b/reverse-build-depends
new file mode 100755
index 0000000..1e6a35b
--- /dev/null
+++ b/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