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Merge pull request #5 from Eeems/patch-1

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Update changescrn
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pr0fsmith
2023-08-08 20:05:03 -04:00
committed by GitHub
parent aaa9fac7ee 40a1d3f624
commit 6d04e97b39
1 changed files with 132 additions and 74 deletions
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changescrn
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@@ -1,80 +1,138 @@
#! /bin/bash
#Backup existing screens: changescrn -b
#Change Screen: changescrn -c [SCREEN] -n [PATH TO NEW SCREEN]
#Restore original screens: changescrn -r [SCREEN] (use option 'all' to restore all screens at once)
#[SCREEN] options: batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended
#!/bin/bash
BACKUP="/opt/usr/share/backupscrns"
SOURCE="/usr/share/remarkable"
while getopts ":r :c :b :h" opt; do
usage(){
echo "changescrn [-b] [-r <screen>|all] [-c <screen> <image-path>]"
echo " -b Backup current screens"
echo " -r Restore a screen, or all screens from the last backup"
echo " -c Change a specific screen"
echo ""
echo " Valid options for screen:"
echo " batteryempty lowbattery overheating poweroff rebooting"
echo " recovery splash starting suspended"
}
valid(){
case $1 in
batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended)
return 0
;;
esac
return 1
}
main(){
local r=
local c=
local b=0
while getopts "r:c:bh" opt; do
case $opt in
r) #Restores original screen
case $2 in
batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended)
echo "restoring $2.png..."
cp $BACKUP/$2.png $SOURCE >&2
echo "Done!"
;;
all)
echo "Restoring all screens..."
cp $BACKUP/*.png $SOURCE
echo "Done!"
;;
*)
echo "Screen Options: batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended | all"
r)
if [[ -z "$OPTARG" ]];then
echo "Screen missing" >&2
usage
exit 1
elif [[ "$OPTARG" != "all" ]] && ! valid "$OPTARG";then
echo "Unknown screen: $OPTARG" >&2
usage
exit 1
fi
r="$OPTARG"
;;
esac
;;
c) #Changes screen
case $2 in
batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended)
case $3 in
*)
cp $3 $SOURCE/$2.png
echo "$2 screen replaced"
;;
"")
echo "Usage: changescrn -c [SCREEN] [PATH TO NEW SCREEN]"
echo "[SCREEN] options: batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended"
;;
esac
;;
"")
echo "Usage: changescrn -c [SCREEN] [PATH TO NEW SCREEN]"
echo "[SCREEN] options: batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended"
;;
esac
;;
b) #Creates a backup of original screens
mkdir -p $BACKUP
cp $SOURCE/*.png $BACKUP/
echo "Backup complete"
c)
if [[ -z "$OPTARG" ]];then
echo "Screen missing" >&2
usage
exit 1
elif ! valid "$OPTARG";then
echo "Unknown screen: $OPTARG" >&2
usage
exit 1
fi
c="$OPTARG"
;;
b) b=1 ;;
\?)
echo "Invalid option: -$OPTARG, 'changescrn -h' for usage" >&2
echo "Invalid option: -$OPTARG" >&2
usage
exit 1
;;
*)
echo "'changescrn -h' for useage"
echo "Unknown option: -$opt" >&2
usage
exit 1
;;
"")
echo "Requires argument. 'changescrn -h' for usage" >&2
echo "Requires argument." >&2
usage
exit 1
;;
h)
echo "Change Screen: changescrn -c [SCREEN] [PATH TO NEW SCREEN]"
echo "Backup existing screens: changescrn -b"
echo "Restore original screens: changescrn -r [SCREEN] (use option 'all' to restore all screens at once)"
echo "[SCREEN] options: batteryempty | lowbattery | overheating | poweroff | rebooting | recovery | splash | starting | suspended"
exit 1
usage
exit
;;
esac
done
shift $(( OPTIND - 1 ))
if [ $b -eq 1 ] && [[ ! -z "${r}" ]];then
echo "You cannot specify -b and -r at the same time." >&2
usage
exit 1
fi
if [ $b -eq 1 ] && [[ ! -z "${c}" ]];then
echo "You cannot specify -b and -c at the same time." >&2
usage
exit 1
fi
if [[ ! -z "${r}" ]] && [[ ! -z "${c}" ]];then
echo "You cannot specify -r and -c at the same time." >&2
usage
exit 1
fi
if [ $b -eq 1 ];then
if [ "$#" -ne 0 ];then
echo "Unknown extra argument." >&2
usage
exit 1
fi
mkdir -p "$BACKUP"
cp "$SOURCE"/{batteryempty,lowbattery,overheating,poweroff,rebooting,recovery,splash,starting,suspended}.png "$BACKUP"/
echo "Backup complete"
elif [[ ! -z "${c}" ]];then
if [ "$#" -eq 0 ];then
echo "Path to image missing." >&2
usage
exit 1
elif [ "$#" -gt 1 ];then
echo "Unknown extra argument." >&2
usage
exit 1
elif [ ! -f "$1" ];then
echo "File missing: $1" >&2
exit 1
fi
cp "$1" "$SOURCE"/"$c".png
echo "$c screen replaced"
elif [[ ! -z "${r}" ]];then
if [[ "$r" == "all" ]];then
echo "Restoring all screens..."
cp "$BACKUP"/{batteryempty,lowbattery,overheating,poweroff,rebooting,recovery,splash,starting,suspended}.png "$SOURCE"/
elif [ ! -f "$BACKUP"/"$r".png ];then
echo "Backup for $r doesn't exist." >&2
exit 1
else
echo "restoring $r.png..."
cp "$BACKUP"/"$r".png "$SOURCE"/
fi
echo "Done!"
else
echo "No options specified" >&2
usage
exit 1
fi
}
done
main "$@"