From 00b7b8c2cb6979af84116abf731e7023aa526497 Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@kodama.kitenet.net>
Date: Thu, 3 Jan 2008 21:36:13 -0500
Subject: * Add gnarly conffile renaming code.

---
 debian/changelog |  1 +
 debian/postinst  | 30 ++++++++++++++++++++++++++++++
 debian/preinst   | 29 +++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+)
 create mode 100644 debian/preinst

diff --git a/debian/changelog b/debian/changelog
index f818472..c1c0ea0 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -7,6 +7,7 @@ etckeeper (0.7) UNRELEASED; urgency=low
   * Rename pre/post-apt.d to pre/post-install.d to allow the same directories
     to be used for other package managers.
   * Use the name of the highlevel package manager in commit messages.
+  * Add gnarly conffile renaming code.
 
  -- Joey Hess <joeyh@debian.org>  Thu, 03 Jan 2008 20:43:23 -0500
 
diff --git a/debian/postinst b/debian/postinst
index be4bf1f..33891dd 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -5,3 +5,33 @@ set -e
 . /usr/share/debconf/confmodule
 
 #DEBHELPER#
+
+# Move a conffile without triggering a dpkg question
+mv_conffile() {
+	OLDCONFFILE="$1"
+	NEWCONFFILE="$2"
+
+	if [ -e "$OLDCONFFILE" ]; then
+		echo "Preserving user changes to $NEWCONFFILE ..."
+		mv -f "$NEWCONFFILE" "$NEWCONFFILE".dpkg-new
+		mv -f "$OLDCONFFILE" "$NEWCONFFILE"
+	fi
+}
+
+case "$1" in
+configure)
+	if dpkg --compare-versions "$2" le "0.7"; then
+		if [ -d /etc/etckeeper/pre-apt.d ]; then
+			for c in README 50uncommitted-changes; do
+				mv_conffile "/etc/etckeeper/pre-apt.d/$c" "/etc/etckeeper/pre-install.d/$c"
+			done
+			rmdir --ignore-fail-on-non-empty /etc/etckeeper/pre-apt.d
+		fi
+		if [ -d /etc/etckeeper/post-apt.d ]; then
+			for c in README 10git-test 30git-add 40git-rm 50git-commit; do
+				mv_conffile "/etc/etckeeper/post-apt.d/$c" "/etc/etckeeper/post-install.d/$c"
+			done
+			rmdir --ignore-fail-on-non-empty /etc/etckeeper/post-apt.d
+		fi
+	fi
+esac
diff --git a/debian/preinst b/debian/preinst
new file mode 100644
index 0000000..f4a086f
--- /dev/null
+++ b/debian/preinst
@@ -0,0 +1,29 @@
+#!/bin/sh
+set -e
+
+#DEBHELPER#
+
+# Prepare to move a conffile without triggering a dpkg question
+prep_mv_conffile() {
+	CONFFILE="$1"
+
+	if [ -e "$CONFFILE" ]; then
+		md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
+		old_md5sum="`sed -n -e \"/^Conffiles:/,/^[^ ]/{\\\\' $CONFFILE'{s/.* //;p}}\" /var/lib/dpkg/status`"
+		if [ "$md5sum" = "$old_md5sum" ]; then
+			rm -f "$CONFFILE"
+		fi
+	fi
+}
+
+case "$1" in
+install|upgrade)
+	if dpkg --compare-versions "$2" le "0.7"; then
+		for c in README 50uncommitted-changes; do
+			prep_mv_conffile "/etc/etckeeper/pre-apt.d/$c"
+		done
+		for c in README 10git-test 30git-add 40git-rm 50git-commit; do
+			prep_mv_conffile "/etc/etckeeper/post-apt.d/$c"
+		done
+	fi
+esac
-- 
cgit v1.2.3