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authorAaron LI <aly@aaronly.me>2019-01-08 13:49:06 +0800
committerAaron LI <aly@aaronly.me>2019-01-09 11:50:34 +0800
commit42d47f3844f44e5721bffaafa41e3322db9eddc7 (patch)
treec4fa0491be2028170f98cea368be0d28277d9b85 /dfly-update
parent24844e17b4b735dcf1d601fdc6f27ef197f96a52 (diff)
downloaddfly-update-42d47f3844f44e5721bffaafa41e3322db9eddc7.tar.bz2
Rework the usage syntax
Use options instead sub-commands, simplifying the usage.
Diffstat (limited to 'dfly-update')
-rwxr-xr-xdfly-update172
1 files changed, 62 insertions, 110 deletions
diff --git a/dfly-update b/dfly-update
index 827fbcf..21c8331 100755
--- a/dfly-update
+++ b/dfly-update
@@ -16,18 +16,18 @@ DEBUG=${DEBUG:-""}
VERSION="0.1.5"
NAME="dfly-update"
-TOOLDIR="${0%/*}"
-PREFIX="${PREFIX:-${TOOLDIR}}"
-CONFIGFILE="${PREFIX}/${NAME}.conf"
+AUTHOR="Aaron LI <aly@aaronly.me>"
+URL="https://github.com/liweitianux/dfly-update"
#
# Error Codes
#
-EC_OS=10
-EC_TMPFILE=11
-EC_MD5=12
-EC_ARGS=13
+EC_USAGE=1
+EC_ARGS=2
+EC_CONFIG=11
+EC_TMPFILE=12
+EC_MD5=13
EC_FETCH=14
EC_MOUNT=15
EC_UMOUNT=16
@@ -392,119 +392,71 @@ _EOF_
}
-#
-# Sub-command functions
-#
-
-cmd_usage() {
+usage() {
cat <<_EOF_
-dfly-update - DragonFly BSD update tool using binary release/snapshots
-
-Usage: ${0##*/} <sub-command>
-
-Sub-commands:
- help | --help | -h
- Show this help.
- mount <dfly.img>
- Mount the given image file
- backup
- Back up the current kernel and world
- upgrade
- Install the new kernel, world, and config files
- cleanup
- Clean up obsolete files, umount and remove image file
- fly <dfly.img>
- Synthetic command to upgrade the system!
+Upgrade a DragonFly BSD system using a binary release/snapshot
+
+Usage: ${0##*/} [-h] [-c <config-file>] [-d] <dfly.img>
v${VERSION}
-Aaron LI <aly@aaronly.me>
-https://github.com/liweitianux/dfly-update
+${AUTHOR}
+${URL}
_EOF_
}
-# Mount the given image file
-cmd_mount() {
- [ $# -eq 1 ] ||
- error ${EC_ARGS} "cmd_mount: invalid arguments: $@"
-
- local file="$1"
- [ -f "${file}" ] ||
- error ${EC_NOFILE} "cmd_mount: file not exists: ${file}"
- mount_image "${file}" "${MNT_DIR}"
-}
-
-# Back up the current kernel and world
-cmd_backup() {
- [ $# -eq 0 ] ||
- error ${EC_ARGS} "cmd_backup: invalid arguments: $@"
-
- backup_kernel
- backfile="${BACK_DIR}/world.tar.gz"
- backup_world "${backfile}"
-}
-
-# Install the new kernel, world, and config files.
-cmd_upgrade() {
- [ $# -eq 0 ] ||
- error ${EC_ARGS} "cmd_upgrade: invalid arguments: $@"
-
- install_system
- add_users
- upgrade_system
-}
-
-# Clean up obsolete files, umount and remove image
-cmd_cleanup() {
- [ $# -eq 0 ] ||
- error ${EC_ARGS} "cmd_cleanup: invalid arguments: $@"
-
- cleanup
- umount_image ${MNT_DIR}
- postupgrade
-}
-
-# Integrate all the upgrading steps -> fly :-)
-cmd_fly() {
- [ $# -eq 1 ] ||
- error ${EC_ARGS} "cmd_fly: invalid arguments: $@"
-
- cmd_mount "$1"
- cmd_backup
- cmd_upgrade
- cmd_cleanup
-}
#
# Main
#
-# Load configurations
-[ -r "${CONFIGFILE}" ] && . ${CONFIGFILE}
-
-case $1 in
- mount)
- shift
- cmd_mount "$@"
- ;;
- backup)
- shift
- cmd_backup
- ;;
- upgrade)
- shift
- cmd_upgrade
- ;;
- cleanup)
- shift
- cmd_cleanup
- ;;
- fly)
- shift
- cmd_fly "$@"
- ;;
- help|--help|-h|*)
- cmd_usage
- ;;
-esac
+CONFIGFILE=""
+
+while getopts :c:dh opt; do
+ case ${opt} in
+ c)
+ CONFIGFILE="${OPTARG}"
+ ;;
+ d)
+ DEBUG=yes
+ ;;
+ h)
+ usage
+ exit ${EC_USAGE}
+ ;;
+ \?)
+ log "Invalid option -${OPTARG}"
+ usage
+ exit ${EC_ARGS}
+ ;;
+ :)
+ log "Option -${OPTARG} requires an argument"
+ usage
+ exit ${EC_ARGS}
+ ;;
+ esac
+done
+
+shift $((OPTIND - 1))
+[ $# -ne 1 ] && { usage; exit ${EC_ARGS}; }
+IMGFILE="$1"
+[ -r "${IMGFILE}" ] || error ${EC_NOFILE} "file not exists: ${IMGFILE}"
+
+if [ -n "${CONFIGFILE}" ]; then
+ if [ -r "${CONFIGFILE}" ]; then
+ . ${CONFIGFILE}
+ else
+ error ${EC_CONFIG} "cannot read config file: ${CONFIGFILE}"
+ fi
+fi
+
+mount_image "${IMGFILE}" "${MNT_DIR}"
+backup_kernel
+backup_world "${BACK_DIR}/world.tar.gz"
+install_system
+add_users
+upgrade_system
+cleanup
+umount_image "${MNT_DIR}"
+postupgrade
exit 0