Add translate filter

_plugins/translate-filter.rb

@@ -0,0 +1,21 @@
+module Jekyll
+  module TranslateFilter
+    def translate_text(input)
+      text          = input.strip
+      weblate_id    = Weblate::ID.get(input)
+      page_language = @context.environments.first["page"]["language"]
+      site          = @context.registers[:site]
+      if page_language.nil?
+        Weblate::SourceFile.add_entry(weblate_id, text)
+
+        text
+      else
+        translated_string = site.data["languages"][page_language][weblate_id]
+
+        translated_string.nil? ? text : translated_string.strip
+      end
+    end
+  end
+end
+
+Liquid::Template.register_filter(Jekyll::TranslateFilter)