From a33db24c701fe232639d904f934f68818393f95e Mon Sep 17 00:00:00 2001
From: Ben Hutchings <ben@decadent.org.uk>
Date: Mon, 9 Jul 2007 01:27:18 +0000
Subject: [PATCH] Added modular configuration mechanism.

---
 debian/README                              |  9 ++++
 debian/install-ion3-cfg                    | 56 ++++++++++++++++++++++
 debian/ion3.install                        |  1 +
 debian/ion3.postinst                       |  3 ++
 debian/patches/00list                      |  1 +
 debian/patches/210_use-cfg_debian_ext.diff | 25 ++++++++++
 6 files changed, 95 insertions(+)
 create mode 100755 debian/install-ion3-cfg
 create mode 100644 debian/patches/210_use-cfg_debian_ext.diff

diff --git a/debian/README b/debian/README
index 8d97835..7476773 100644
--- a/debian/README
+++ b/debian/README
@@ -56,3 +56,12 @@ in your X session and this in your Ion3 configuration:
        ...
        template="... %systray_dock"
     }
+
+Adding configuration files to the defaults
+
+Ion3 extension packages may add and remove configuration files to
+those included by cfg_defaults.lua.  The configuration files must be
+installed under /etc/X11/ion3.  Run "install-ion3-cfg cfg_foo" in the
+postinst script to add the configuration file
+/etc/X11/ion3/cfg_foo.lua.  Run "install-ion3-cfg --remove cfg_foo" in
+the prerm script to remove it.
diff --git a/debian/install-ion3-cfg b/debian/install-ion3-cfg
new file mode 100755
index 0000000..9fab5bc
--- /dev/null
+++ b/debian/install-ion3-cfg
@@ -0,0 +1,56 @@
+#!/bin/bash
+
+set -e
+
+usage() {
+    echo >&2 "Usage: install-ion3-cfg [--remove] config-basename"
+}
+
+config_dir=/etc/X11/ion3
+config_list=$config_dir/cfg_debian_ext.lua
+
+action=add
+
+while true; do
+    case "$1" in
+	-h|--help)
+	    usage
+	    exit 0
+	    ;;
+	--remove)
+	    action=remove
+	    ;;
+	-*)
+	    usage
+	    exit 2
+	    ;;
+	*)
+	    break
+	    ;;
+    esac
+    shift
+done
+
+if [ $# -ne 1 ]; then
+    usage
+    exit 2
+fi
+
+name="$1"
+
+case $action in
+    add)
+	if ! [ -f "$config_dir/$name.lua" ]; then
+	    echo >&2 "$config_dir/$name.lua does not exist!"
+	    exit 2
+	fi
+	if ! egrep -q "^ *dopath *\\( *\"$name\" *\\) *\$" \
+	    "$config_list"; then
+	    echo "dopath(\"$name\")" >> "$config_list"
+	fi
+	;;
+    remove)
+	sed -i -r -e "/^ *dopath *\\( *\"$name\" *\\) *\$/d" \
+	    "$config_list"
+	;;
+esac
diff --git a/debian/ion3.install b/debian/ion3.install
index 3aafa3c..ba93f6d 100644
--- a/debian/ion3.install
+++ b/debian/ion3.install
@@ -2,3 +2,4 @@ debian/ion3.desktop debian/pwm3.desktop usr/share/xsessions
 debian/default etc
 debian/overrides/ion3 usr/share/lintian/overrides
 debian/watch usr/share/ion3/debian
+debian/install-ion3-cfg usr/sbin
diff --git a/debian/ion3.postinst b/debian/ion3.postinst
index f8e8fd9..bfa5718 100644
--- a/debian/ion3.postinst
+++ b/debian/ion3.postinst
@@ -67,6 +67,9 @@ if [ -f $inst ]; then
     chmod a+x $inst
 fi
 
+# Initialise extra configuration file list if missing
+[ -f /etc/X11/ion3/cfg_debian_ext.lua ] || >/etc/X11/ion3/cfg_debian_ext.lua
+
 #DEBHELPER#
 
 # Remove the old now-renamed generated Debian menu
diff --git a/debian/patches/00list b/debian/patches/00list
index 24d4144..2b86911 100644
--- a/debian/patches/00list
+++ b/debian/patches/00list
@@ -4,3 +4,4 @@
 205_ion-lock.diff
 206_use-xterm.diff
 209_use-etc-default.diff
+210_use-cfg_debian_ext.diff
diff --git a/debian/patches/210_use-cfg_debian_ext.diff b/debian/patches/210_use-cfg_debian_ext.diff
new file mode 100644
index 0000000..693586d
--- /dev/null
+++ b/debian/patches/210_use-cfg_debian_ext.diff
@@ -0,0 +1,25 @@
+#! /bin/sh -e
+if [ $# -ne 1 ]; then 
+    echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
+    exit 1  
+fi
+case "$1" in 
+    -patch) patch -f --no-backup-if-mismatch -p1 < $0;;
+    -unpatch) patch -f --no-backup-if-mismatch -R -p1 < $0;;
+    *)
+        echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
+        exit 1;;
+esac
+
+exit 0
+
+@DPATCH@
+--- ion3-20070708.orig/etc/cfg_defaults.lua
++++ ion3-20070708/etc/cfg_defaults.lua
+@@ -15,3 +15,6 @@
+ 
+ -- Deprecated.
+ dopath("cfg_user", true)
++
++-- Debian extra configuration files
++dopath("cfg_debian_ext")
-- 
2.39.2