Set a main function

winboot

@@ -1,31 +1,47 @@
 #!/bin/sh
 
-GRUB_DEFAULT_PATH='/etc/default/grub'
-GRUB_DEFAULT_DIR='/etc/default/grub.d'
-WIN_GRUB="2"
+# This script set a specific grub entry (winLOOSE…) for the next boot.
+# Then reboot the host
 
-# First check in Grub default dir if saved mode is set
-if grep -q -E -R -- "^GRUB_DEFAULT=saved" "${GRUB_DEFAULT_DIR}"
-then
+# Vars {{{
+readonly PROGNAME=$(basename "${0}")
+readonly PROGDIR=$(readlink -m $(dirname "${0}"))
+readonly ARGS="${*}"
+readonly NBARGS="${#}"
+
+readonly GRUB_DEFAULT_PATH='/etc/default/grub'
+readonly GRUB_DEFAULT_DIR='/etc/default/grub.d'
+readonly WIN_GRUB="2"
+# }}}
+
+main() {                                                        # {{{
+
+	# First check in Grub default dir if saved mode is set
+	if grep -q -E -R -- "^GRUB_DEFAULT=saved" "${GRUB_DEFAULT_DIR}"
+	then
 		printf '%b' "Reboot to windaube partition\\n"
 		sudo grub-reboot "${WIN_GRUB}"
 		sudo systemctl reboot
-fi
+	fi
 
-# Otherwise check the default grub file
-if grep -q -E -- "^GRUB_DEFAULT=saved" "${GRUB_DEFAULT_PATH}"
-then
+	# Otherwise check the default grub file
+	if grep -q -E -- "^GRUB_DEFAULT=saved" "${GRUB_DEFAULT_PATH}"
+	then
 		printf '%b' "Reboot to windaube partition\\n"
 		sudo grub-reboot "${WIN_GRUB}"
 		sudo systemctl reboot
-else
+	else
 
 		printf '%b' "GRUB_DEFAULT is not set in 'saved' mode\\n"
 		sudo sed -i 's/\(^GRUB_DEFAULT.*\)/#\1\nGRUB_DEFAULT=saved/' "${GRUB_DEFAULT_PATH}"
 		GRUB_DEFAULT_ENTRY=$(grep -E -- "#GRUB_DEFAULT=" "${GRUB_DEFAULT_PATH}" | cut -d"=" -f2)
 		sudo grub-set-default "${GRUB_DEFAULT_ENTRY}"
 		sudo update-grub
-	printf '%b' "Please launch this script once again.\\n"
-fi
+		printf '%b' "Please launch this script (${PROGDIR}/${PROGNAME} ${ARGS}) once again.\\n"
+	fi
+}
+# }}}
+
+main
 
 exit 0