install.zsh: improve interpreter detection, add list mode

install.zsh

@@ -23,6 +23,18 @@ uses_interpreter() {
 	head -n 1 $2 | grep -q $1
 }
 
+get_interpreter() {
+	parts=(${(s: :)$(head -n 1 $1)})
+	main=${parts[1]:t}
+	shift 1 parts
+	if [[ $main == 'env' ]]; then
+		while [[ ${parts[1][1]} == '-' ]]; do shift 1 parts; done
+		echo ${parts[1]}
+	else
+		echo $main
+	fi
+}
+
 get_dependencies() {
 	sed -n '2,4{/^#dep:/{s/^#dep://;p;q}}' $1
 }
@@ -45,15 +57,13 @@ install_flatpak() {
 }
 
 install_prog() {
-	for lang in zsh ruby python amm; do
-		if uses_interpreter $lang $prog && ! have_dependency $lang; then
-			if [[ $skip ]]; then
-				continue 2
-			else
-				exit 1
-			fi
+	if ! have_dependency $(get_interpreter $prog); then
+		if [[ $skip ]]; then
+			continue
+		else
+			exit 1
 		fi
-	done
+	fi
 	for dep in $(get_dependencies $prog); do
 		if ! have_dependency $dep; then
 			[[ $skip ]] && continue 2 || exit 1
@@ -96,7 +106,7 @@ if [[ -z $1 ]]; then
 fi
 
 zparseopts -D -E p:=install_path -path:=install_path f=force -force=force \
-	s=skip -skip=skip -no-flatpak=noflatpakinstall a=all -all=all
+	s=skip -skip=skip -no-flatpak=noflatpakinstall a=all -all=all l=list -list=list
 
 if [[ ! $install_path ]]; then
 	install_path=$HOME/.local/bin
@@ -104,8 +114,30 @@ else
 	install_path=${install_path[2]}
 fi
 
+if [[ $list ]]; then
+	all_scripts=( devel/* flatpaks/* misc/* void/* xdg-wrappers/* )
+	installed=()
+	not_installed=()
+	for script in $all_scripts; do
+		if [[ -e $install_path/${script:t} ]]; then
+			installed+=($script)
+		else
+			not_installed+=($script)
+		fi
+	done
+	printf "\e[4;34mInstalled:\e[0m\n"
+	for script in $installed; do
+		printf "  %s\n" $script
+	done
+	printf "\e[4;34mNot installed:\e[0m\n"
+	for script in $not_installed; do
+		printf "  %s\n" $script
+	done
+	exit 0
+fi
+
 if [[ $all ]]; then
-	set - devel/* misc/* void/* xdg-wrappers/*
+	set - devel/* flatpaks/* misc/* void/* xdg-wrappers/*
 fi
 
 for prog in $@; do