Improve script syntax

rofi-checklist.sh

@@ -24,9 +24,7 @@ list=${list//"$EMPTY_RAW"/"$EMPTY"} # empty checkboxes
 list=${list//"$FILLED_RAW"/"$FILLED"} # filled checkboxes
 
 # Don't show clear all option if task list is empty
-if [[ $list == "" ]]; then
-	clear=""
-fi
+[[ -z $list ]] && clear=""
 
 # Don't show clear completed option if there are no completed tasks
 count=${#list_raw_array[*]}
@@ -34,15 +32,13 @@ i=0
 completed_tasks="n"
 while [ $i -lt $count ]; do
 	# %q escapes string, otherwise there are issues with square brackets
-	if [[ ${list_raw_array[$i]} == `printf "%q" "$FILLED_RAW"`* ]]; then
+	if [[ ${list_raw_array[$i]} = `printf "%q" "$FILLED_RAW"`* ]]; then
 		completed_tasks="y"
 		break
 	fi
 	i=$(($i + 1))
 done
-if [[ $completed_tasks == "n" ]]; then
-	clear_completed=""
-fi
+[[ $completed_tasks = "n" ]] && clear_completed=""
 
 # Run rofi, replace display checkmarks with raw syntax
 selection=`printf "%s%s%s\n" "$clear" "$clear_completed" "$list" | rofi -dmenu -i -selected-row 2 -p " Task:"`
@@ -50,32 +46,32 @@ selection=${selection//"$EMPTY"/"$EMPTY_RAW"}
 selection=${selection//"$FILLED"/"$FILLED_RAW"}
 
 # Selection logic
-if [[ $selection == $CLEAR ]]; then
-	list_raw=""
-elif [[ $selection == $CLEAR_COMPLETED ]]; then
-	list_raw_array=($list_raw)
-	count=${#list_raw_array[*]}
-	i=0
-	while [ $i -lt $count ]
-	do
-		if [[ ${list_raw_array[$i]} == `printf "%q" "$FILLED_RAW"`* ]]; then
-			unset 'list_raw_array[$i]'
-		fi
-		i=$(($i + 1))
-	done
-	list_raw="${list_raw_array[*]}"
-elif [[ $selection == `printf "%q" "$FILLED_RAW"`* ]]; then
-	replace="${selection}${NL}"
-	list_raw=${list_raw//"$replace"/""}
-	list_raw=${list_raw//"$selection"/""}
-elif [[ $selection == `printf "%q" "$EMPTY_RAW"`* ]]; then
-	selection_filled=${selection//"$EMPTY_RAW"/"$FILLED_RAW"}
-	list_raw=${list_raw//"$selection"/"$selection_filled"}
-elif [[ $selection != "" ]]; then
-	if [[ $list_raw != "" ]]; then
-		list_raw="${list_raw}${NL}"
-	fi
-	list_raw=`printf "%s%s %s\n" "$list_raw" "$EMPTY_RAW" "$selection"`
-fi
+case $selection in
+	$CLEAR) list_raw="" ;;
+	$CLEAR_COMPLETED)
+		list_raw_array=($list_raw)
+		count=${#list_raw_array[*]}
+		i=0
+		while [ $i -lt $count ]
+		do
+			if [[ ${list_raw_array[$i]} = `printf "%q" "$FILLED_RAW"`* ]]; then
+				unset 'list_raw_array[$i]'
+			fi
+			i=$(($i + 1))
+		done
+		list_raw="${list_raw_array[*]}" ;;
+	`printf "%q" "$FILLED_RAW"`*)
+		replace="${selection}${NL}"
+		list_raw=${list_raw//"$replace"/""}
+		list_raw=${list_raw//"$selection"/""} ;;
+	`printf "%q" "$EMPTY_RAW"`*)
+		selection_filled=${selection//"$EMPTY_RAW"/"$FILLED_RAW"}
+		list_raw=${list_raw//"$selection"/"$selection_filled"} ;;
+	*)
+		if [[ -n $selection ]]; then
+			[[ -n $list_raw ]] && list_raw="${list_raw}${NL}"
+			list_raw=`printf "%s%s %s\n" "$list_raw" "$EMPTY_RAW" "$selection"`
+		fi ;;
+esac
 
 printf "%s\n" "$list_raw" >| $FILE