From e8c3d5895a360569385922793049b1c037865de5 Mon Sep 17 00:00:00 2001
From: Andrew Klapp <andklapp@null.net>
Date: Mon, 3 Sep 2018 19:08:34 -0500
Subject: [PATCH] Added reconf-display script.

---
 reconf-display | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100755 reconf-display

diff --git a/reconf-display b/reconf-display
new file mode 100755
index 0000000..9064d1f
--- /dev/null
+++ b/reconf-display
@@ -0,0 +1,64 @@
+#!/usr/bin/env sh
+# A pretty simple auto configurator script for displays.
+
+
+sort_list()
+{
+    # Sort a space-delimited list and echo it.
+    list_to_sort=$1
+
+    echo "${list_to_sort}" | xargs -n1 | sort | xargs
+}
+
+xrandr_output="$(xrandr)"
+all_displays="$(sort_list "$(echo "${xrandr_output}" | grep "connected" | cut -d " " -f1)")"
+connected_displays="$(sort_list "$(echo "${xrandr_output}" | grep " connected" | cut -d " " -f1)")"
+
+xrandr_args=""
+
+display_is_connected()
+{
+    display_to_check=$1
+    # Check the connected_displays list for $display_to_check
+
+    result="no"
+
+    for display in ${connected_displays}; do
+        if [ "${display}" = "${display_to_check}" ]; then
+            result="yes"
+        fi
+    done
+
+    echo "${result}"
+}
+
+display_configuration()
+{
+    target_displays="$*"
+    # Each argument is a display name.
+    use_this_configuration="no"
+
+    if [ "$(sort_list "${target_displays}")" = "${connected_displays}" ]; then
+        use_this_configuration="yes"
+    fi
+
+    echo "${use_this_configuration}"
+}
+
+disable_disconnected_displays()
+{
+    for display in $all_displays; do
+        if [ ! "$(display_is_connected "${display}")" = "yes" ]; then
+            xrandr_args="${xrandr_args} --output ${display} --off"
+        fi
+    done
+}
+
+echo "LVDS1 connected?"
+display_is_connected "LVDS1"
+
+echo "HDMI3 connected?"
+display_is_connected "HDMI3"
+
+disable_disconnected_displays
+echo $xrandr_args