chore: add script to Makefile to check for missing filetypes

Author: hasecilu

Makefile

@@ -1,6 +1,6 @@
 VIM_COLORTEMPLATE_VERSION = 2.2.3
 
-all: colors style-check lint
+all: colors style-check lint filetypes
 
 colors: vim-colortemplate
 	nvim \
@@ -26,7 +26,10 @@ style-fix:
 lint:
 	luacheck lua scripts
 
+filetypes:
+	./scripts/filetypes.sh
+
 clean:
 	rm -rf vim-colortemplate
 
-.PHONY: all colors style-check style-fix lint
+.PHONY: all colors style-check style-fix lint filetypes

scripts/filetypes.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+# Iterate over the elements of icons_by_file_extension and check if there are missed filetypes.
+
+in_section=false
+
+while IFS= read -r line; do
+	if [[ $line =~ ^local\ icons_by_file_extension\ =\ \{$ ]]; then
+		in_section=true
+	elif [[ $line =~ ^\}$ ]]; then
+		in_section=false
+	fi
+
+	if $in_section && [[ $line =~ \[\"(.+)\"\] ]]; then
+		key="${BASH_REMATCH[1]}"
+		# Search for the key in the main file
+		line=$(grep -F "\"$key\"" "lua/nvim-web-devicons.lua")
+		if [ -n "$line" ]; then
+			continue
+		else
+			[ -f "/usr/share/nvim/runtime/syntax/$key.vim" ] &&
+				echo -e "\e[33mPlease add \"$key\" to filetypes Lua table.\e[0m"
+		fi
+	fi
+done <"lua/nvim-web-devicons/icons-default.lua"