pkg: improve contect

Author: Maxython

packages/termux-tools/pkg

@@ -7,7 +7,7 @@ fi
 
 show_help() {
 	local cache_size
-	local cache_dir
+	local cache_dir=""
 	if [ "$TERMUX_MAIN_PACKAGE_FORMAT" = "debian" ]; then
 		cache_dir="@TERMUX_CACHE_DIR@/apt/archives"
 	elif [ "$TERMUX_MAIN_PACKAGE_FORMAT" = "pacman" ]; then
@@ -189,18 +189,17 @@ update_apt_cache() {
 	fi
 }
 
-if [ $# = 0 ]; then
+if [[ $# = 0 || $(echo "$1" | grep "^h") ]]; then
 	show_help
 fi
 
 CMD="$1"
-WRITE_ERROR=false
+ERROR=false
 shift 1
 
 if [ "$TERMUX_MAIN_PACKAGE_FORMAT" = "debian" ]; then
 	case "$CMD" in
 		f*) dpkg -L "$@";;
-		h*) show_help;;
 		sh*|inf*) apt show "$@";;
 		add|i*)
 			select_mirror
@@ -223,12 +222,11 @@ if [ "$TERMUX_MAIN_PACKAGE_FORMAT" = "debian" ]; then
 			apt update
 			apt full-upgrade "$@"
 			;;
-		*) WRITE_ERROR=true;;
+		*) ERROR=true;;
 	esac
 elif [ "$TERMUX_MAIN_PACKAGE_FORMAT" = "pacman" ]; then
 	case "$CMD" in
 		f*) pacman -Ql "$@";;
-		h*) show_help;;
 		sh*|inf*) pacman -Qi "$@";;
 		add|i*) pacman -Sy "$@" --needed;;
 		autoc*) pacman -Sc --noconfirm;;
@@ -239,11 +237,14 @@ elif [ "$TERMUX_MAIN_PACKAGE_FORMAT" = "pacman" ]; then
 		se*) pacman -Sys "$@";;
 		un*|rem*|rm|del*) pacman -Rcns "$@";;
 		up*) pacman -Syu;;
-		*) WRITE_ERROR=true;;
+		*) ERROR=true;;
 	esac
+else
+	echo "Error: pkg is not supported with '$TERMUX_MAIN_PACKAGE_FORMAT' package manager format"
+	exit 1
 fi
 
-if $WRITE_ERROR; then
+if $ERROR; then
 	echo "Unknown command: '$CMD' (run 'pkg help' for usage information)"
 	exit 1
 fi