functions + pluralize

lib/functions.bash

@@ -0,0 +1,60 @@
+## library of useful functions, usually prefixed with '_'
+
+##
+## ARRAY Functions
+##
+
+function _array_contains {
+    local -n array=$1
+    local element=$2
+    [[ " ${array[@]} " =~ " ${element} " ]] && return 0 || return 1
+}
+
+function _array_intersect {
+    local -n arr1=$1
+    local -n arr2=$2
+    local -n result=$3
+
+    declare -A include
+    for item in "${arr2[@]}"; do include["$item"]=1; done
+
+    result=()
+    for item in "${arr1[@]}"; do [[ -n ${include["$item"]} ]] && result+=("$item"); done
+}
+
+function _array_subtract {
+    local -n arr1=$1   # First array
+    local -n arr2=$2   # Array to subtract
+    local -n result=$3 # Output array
+
+    [[ ${#arr2[@]} == 0 ]] && result=("${arr1[@]}") && return
+
+    declare -A exclude
+    for item in "${arr2[@]}"; do exclude["$item"]=1; done
+
+    result=()
+    for item in "${arr1[@]}"; do [[ -z ${exclude["$item"]} ]] && result+=("$item"); done
+}
+
+##
+## TEXT Functions
+##
+
+function _pluralize_simple {
+    echo -n "$1 "
+    [[ $1 -eq 1 || $1 -eq -1 ]] && echo ${2} || echo ${2}s
+}
+
+##
+## READ Functions
+##
+
+function _confirm_destructive {
+    local message="${1:-This cannot be undone!}"
+    echo "⚠️  WARNING: $message"
+    read -p "Type YES to confirm: " response
+    case "$response" in
+        [yY][eE][sS] | [yY]) return 0 ;;
+        *) echo "canceled!" && return 1 ;;
+    esac
+}

lib/miaou.completion

@@ -1,3 +1,9 @@
+# CONSTANTS
+
+MIAOU_INCUS_DIR=${MIAOU_INCUS_DIR:-/opt/miaou-incus}
+
+# FUNCTIONS
+
 function _incus_container {
     incus list --format csv --columns n type=CONTAINER
 }
@@ -170,32 +176,6 @@ function _miaou_ls {
     fi
 }
 
-function _array_intersect {
-    local -n arr1=$1
-    local -n arr2=$2
-    local -n result=$3
-
-    declare -A include
-    for item in "${arr2[@]}"; do include["$item"]=1; done
-
-    result=()
-    for item in "${arr1[@]}"; do [[ -n ${include["$item"]} ]] && result+=("$item"); done
-}
-
-function _array_subtract {
-    local -n arr1=$1   # First array
-    local -n arr2=$2   # Array to subtract
-    local -n result=$3 # Output array
-
-    [[ ${#arr2[@]} == 0 ]] && result=("${arr1[@]}") && return
-
-    declare -A exclude
-    for item in "${arr2[@]}"; do exclude["$item"]=1; done
-
-    result=()
-    for item in "${arr1[@]}"; do [[ -z ${exclude["$item"]} ]] && result+=("$item"); done
-}
-
 function _comp_debug {
     echo -e "\nDEBUG:  $@" >&2
 }
@@ -219,16 +199,24 @@ function _miaou_stop {
 }
 
 function _miaou_destroy {
-    local cur="${COMP_WORDS[COMP_CWORD]}"
-
-    #TODO: if COMP_WORDS contains --force, use _incus_container instead of _incus_stopped_container
+    local cur suggestions previous_words
 
-    # containers...
-    local suggestions=($(compgen -W "--yes --force $(_incus_stopped_container)" -- "$cur"))
-    local previous_containers=("${COMP_WORDS[@]:1:${#COMP_WORDS[@]}-2}") # drop first and last items
-    _array_subtract suggestions previous_containers COMPREPLY
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    if [[ $cur =~ ^- ]]; then
+        suggestions=(--yes --force)
+    else
+        _array_contains COMP_WORDS --force && suggestions=($(_incus_container)) || suggestions=($(_incus_stopped_container))
+        [[ ${#suggestions[@]} == 0 ]] && suggestions=(--force)
+    fi
+    suggestions=($(compgen -W "${suggestions[*]}" -- "$cur"))
+    previous_words=("${COMP_WORDS[@]:1:${#COMP_WORDS[@]}-2}") # drop first and last items
+    _array_subtract suggestions previous_words COMPREPLY
 }
 
+# MAIN
+
+# shellcheck source=/opt/miaou-incus/lib/functions.bash
+source "$MIAOU_INCUS_DIR/lib/functions.bash"
 complete -F _miaou_login "miaou-login"
 complete -F _miaou_exec "miaou-exec"
 complete -F _miaou_ls "miaou-ls"

tools/miaou-destroy

@@ -2,6 +2,7 @@
 
 # CONSTANTS
 
+MIAOU_INCUS_DIR=${MIAOU_INCUS_DIR:-/opt/miaou-incus}
 BASEDIR=$(dirname "$0")
 CONTAINERS=()
 YES=false
@@ -54,29 +55,28 @@ function parse_options {
 	[[ ${#CONTAINERS[@]} == 0 ]] && usage && exit 1 || true
 }
 
-function confirm_destructive {
-	local message="${1:-This cannot be undone!}"
-	echo "⚠️  WARNING: $message"
-	read -p "Type YES to confirm: " response
-	case "$response" in
-		[yY][eE][sS] | [yY]) return 0 ;;
-		*) echo "canceled!" && return 1 ;;
-	esac
-}
-
 function force_option {
 	[[ $FORCE == false ]] && return
 	echo '--force '
 }
 
 function destroy {
-	[[ $YES == false ]] && confirm_destructive "you are about to destroy ${#CONTAINERS[@]} containers <${CONTAINERS[*]}>" $(force_option)
+	if [[ $YES == false ]]; then
+		local message count
+		count=${#CONTAINERS[@]}
+		message="you are about to destroy $(_pluralize_simple $count container): ${CONTAINERS[*]}"
+		_confirm_destructive "$message" $(force_option)
+	fi
 	incus delete "${CONTAINERS[@]}" $(force_option)
 }
 
 # MAIN
 
-set -Eue
+set -Eue -o pipefail
+
+# shellcheck source=/opt/miaou-incus/lib/functions.bash
+source "$MIAOU_INCUS_DIR/lib/functions.bash"
+
 flatten_short_options flat "$@"
 parse_options "${flat[@]}"
 destroy