check custom hooks against defaults in sxmo_migrate.sh and allow user to open editor immediately

Signed-off-by: Stacy Harper <contact@stacyharper.net>

Makefile

@@ -55,5 +55,7 @@ install: $(PROGRAMS)
 	install -D programs/sxmo_megiaudioroute $(DESTDIR)$(PREFIX)/bin/
 	install -D programs/sxmo_vibratepine $(DESTDIR)$(PREFIX)/bin/
 
-	echo "NOTICE: Do not forget to add sxmo-setpermissions to your init system, e.g. for openrc: rc-update add sxmo-setpermissions default && rc-service sxmo-setpermissions start" >&2
+	echo "NOTICE 1: Do not forget to add sxmo-setpermissions to your init system, e.g. for openrc: rc-update add sxmo-setpermissions default && rc-service sxmo-setpermissions start" >&2
+
+	echo "NOTICE 2: It is recommended you interactively run sxmo_migrate.sh after an upgrade to check your configuration files and custom hooks against the defaults (it will not make any changes unless explicitly told to)" >&2
 

scripts/core/sxmo_migrate.sh

@@ -1,5 +1,9 @@
 #!/usr/bin/env sh
 
+# include common definitions
+# shellcheck source=scripts/core/sxmo_common.sh
+. "$(which sxmo_common.sh)"
+
 smartdiff() {
 	if command -v colordiff > /dev/null; then
 		colordiff "$@"
@@ -19,13 +23,44 @@ defaultconfig() {
 				printf "\e[31mThe file \e[32m%s\e[31m differs\e[0m\n" "$2"
 				smartdiff -ud "$2" "$1"
 			) | less -RF
-			printf "\e[33mDo you want to apply the default? [y/N]\e[0m "
+			printf "\e[33mDo you want to apply the default? [y/N], or perhaps open an editor [e]?\e[0m "
 			read -r reply < /dev/tty
 			if [ "y" = "$reply" ]; then
 				cp "$1" "$2"
+			elif [ "e" = "$reply" ]; then
+				$EDITOR "$2" "$1"
+			fi
+		fi
+	fi
+}
+
+checkhooks() {
+	if [ -e "$XDG_CONFIG_HOME/sxmo/hooks/" ]; then
+		for hook in "$XDG_CONFIG_HOME/sxmo/hooks/"*; do
+			defaulthook="/usr/share/sxmo/default_hooks/$(basename "$hook")"
+			if [ -f "$defaulthook" ]; then
+				if ! diff "$hook" "$defaulthook" > /dev/null; then
+					(
+						printf "\e[31mThe file \e[32m%s\e[31m differs\e[0m\n" "$hook"
+						smartdiff -ud "$hook" "$defaulthook"
+					) | less -RF
+					printf "\e[33mDo you want to remove the custom hook and fall back to the default? [y/N], or perhaps open an editor [e]?\e[0m"
+					read -r reply < /dev/tty
+					if [ "y" = "$reply" ]; then
+						rm "$hook"
+					elif [ "e" = "$reply" ]; then
+						$EDITOR "$hook" "$defaulthook"
+					fi
+				else
+					printf "\e[33mHook $hook is identical to the default, so you don't need a custom hook, remove it? [Y/n]\e[0m"
+					if [ "n" != "$reply" ]; then
+						rm "$hook"
+					fi
 				fi
 			fi
+		done
 	fi
 }
 
 defaultconfig /usr/share/sxmo/appcfg/xinit_template "$XDG_CONFIG_HOME/sxmo/xinit" 744
+checkhooks