Add XDG support for history file (#1031)

jgarber623 · ko1 · commit 630dbfa08785 · 2025-06-06T10:49:31.000+09:00
This commit implements XDG directory support for this gem's history file in accordance with the rules outlined in #1031: > For the history file: > > 1. prefer `~/.rdbg_history` if present, > 2. else, `$XDG_DATA_HOME/rdbg/history` if `$XDG_DATA_HOME` is set¹ > > ¹ There'd need to be a check for this file path. If it exists, great! > If not, create the path `$XDG_DATA_HOME/rdbg` and touch > `$XDG_DATA_HOME/rdbg/history`. See: #1031 (comment)
diff --git a/lib/debug/console.rb b/lib/debug/console.rb
@@ -153,13 +153,20 @@ def history
     end
 
     def history_file
-      history_file = CONFIG[:history_file]
+      path =
+        if !CONFIG[:history_file].empty? && File.exist?(File.expand_path(CONFIG[:history_file]))
+          CONFIG[:history_file]
+        elsif (xdg_home = ENV['XDG_DATA_HOME'])
+          File.join(xdg_home, 'rdbg', 'history')
+        else
+          '~/.rdbg_history'
+        end
 
-      if !history_file.empty?
-        File.expand_path(history_file)
-      else
-        history_file
-      end
+      path = File.expand_path(path)
+
+      FileUtils.mkdir_p(File.dirname(path)) unless File.exist?(path)
+
+      path
     end
 
     FH = "# Today's OMIKUJI: "
