HAXY

▄ ▄▄▄▄▄ ▄ ▄▀ ▄▀▀▀▀▀▀ ▄ ▀▄ ▀▀▀▀▀▀▀▀ ▀▀ ▀▀▄ ▀▀▀▀▀▀▀▀ ▀▀▀ ▀▀▀▀ ▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀ ▀▄ ▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀ ▀ ▀▀▀▀▀▀▀▀▀▀▄ ▄▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▄ ▄▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▄ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▄▄▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▄ ▄▀▀▀▀▀▀▀▀ ▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▄▄▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀ ▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀ ▀▀▀▀ ▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▄▄▀▀▀▄▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▄ ▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▄▄▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀

╭ ui.zig ───────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯

╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╮ │http│ ssh │ │ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╯

.. embed/ event/ test/ ui/ command.zig event.zig lib.zig main.zig main_wasm.zig serve.zig serve_common.zig serve_http.zig serve_ssh.zig serve_ssh_protocol.zig test.zig testnet.zig try.zig ╭─────────────────────────────────╮ │ui.zig │ ╰─────────────────────────────────╯ web.zig

1 const std = @import("std"); 2 const xit = @import("xit"); 3 const rp = xit.repo; 4 const rf = xit.ref; 5 const hash = xit.hash; 6 const xitui = xit.xitui; 7 const term = xitui.terminal; 8 const wgt = xitui.widget; 9 const layout = xitui.layout; 10 const Key = xitui.input.Key; 11 const Grid = xitui.grid.Grid; 12 const Focus = xitui.focus.Focus; 13 const evt = @import("./event.zig"); 14 15 pub const Home = @import("./ui/Home.zig"); 16 pub const User = @import("./ui/User.zig"); 17 pub const Repo = @import("./ui/Repo.zig"); 18 pub const Title = @import("./ui/Title.zig"); 19 pub const SubTitle = @import("./ui/SubTitle.zig"); 20 pub const Quit = @import("./ui/Quit.zig"); 21 22 pub const PageKind = enum { 23 home, 24 user, 25 repo, 26 }; 27 28 pub const Page = union(PageKind) { 29 home: Home, 30 user: User, 31 repo: Repo, 32 33 pub fn init(arena: *std.heap.ArenaAllocator, session: *Session, route: RoutablePage) !Page { 34 const haxy_moment = session.haxy_moment orelse return error.NoMoment; 35 return switch (route.parent()) { 36 .home => .{ .home = try Home.init(arena, haxy_moment, switch (route) { 37 .home_users => |after| after, 38 else => 0, 39 }, switch (route) { 40 .home_repos => |after| after, 41 else => 0, 42 }) }, 43 .user => switch (route) { 44 .user_repos => |u| .{ .user = try User.init(arena, haxy_moment, u.name, u.after) }, 45 .user_settings, .user_auth => |name| .{ .user = try User.init(arena, haxy_moment, name, 0) }, 46 else => return error.UnexpectedRoute, 47 }, 48 .repo => switch (route) { 49 .repo_files, .repo_commits, .repo_refs, .repo_settings, .repo_auth => .{ .repo = try Repo.init(arena, session, route) }, 50 else => return error.UnexpectedRoute, 51 }, 52 }; 53 } 54 }; 55 56 // what the server hands to the client (and what main_wasm parses on _start). 57 // keeps Page free of any per-request session state. 58 pub const Snapshot = struct { 59 page: Page, 60 session: Session.Data = .{}, 61 }; 62 63 // a top-level "page" the user can navigate to. the user_* variants are the 64 // tabs of a user page; they each carry the user's name and all map to the 65 // .user parent page, so switching between them stays on that page (and just 66 // updates the url) rather than navigating away. 67 pub const RoutablePage = union(enum) { 68 home_users: usize, // 0 = first page 69 home_repos: usize, // 0 = first page 70 home_settings, 71 home_auth, 72 user_repos: struct { name: Array(evt.User.name_max_len), after: usize = 0 }, 73 user_settings: Array(evt.User.name_max_len), 74 user_auth: Array(evt.User.name_max_len), 75 repo_files: struct { name: Array(repo_route_max_len), after: usize = 0 }, 76 repo_commits: struct { name: Array(repo_route_max_len), after: usize = 0 }, 77 repo_refs: struct { name: Array(repo_route_max_len), kind: RefKind = .branch, after: usize = 0 }, 78 repo_settings: Array(repo_route_max_len), 79 repo_auth: Array(repo_route_max_len), 80 81 pub const default: RoutablePage = .{ .home_users = 0 }; 82 83 pub const RefKind = enum { branch, tag }; 84 85 pub const RefOrOid = enum { 86 branch, 87 tag, 88 object, 89 90 fn fromSeg(s: []const u8) ?RefOrOid { 91 return std.meta.stringToEnum(RefOrOid, s); 92 } 93 }; 94 95 const user_segment = "/user/"; 96 const repo_segment = "/repo/"; 97 const files_seg = "files"; 98 const commits_seg = "commits"; 99 100 // a repo route is "username/reponame", optionally followed by the files tab's 101 // "/files/<refkind>/<refvalue>/<dir>" (refkind/refvalue name the ref the tree 102 // is read at). the bare "username/reponame" (and "username/reponame/files") 103 // mean the files root of the repo's default branch. 104 pub const repo_route_max_len = 1024; 105 106 // the parts of a `.repo_files` route. all slices point into the route's 107 // stored string. ref_kind is null (and ref_value/dir empty) for the bare 108 // default-branch root; dir is "" at a ref's root. 109 pub const RepoFiles = struct { 110 identity: []const u8, // "owner/name" 111 owner: []const u8, 112 name: []const u8, 113 ref_kind: ?RefOrOid, 114 ref_value: []const u8, 115 dir: []const u8, 116 117 // parse a `.repo_files` route's stored string ("owner/name" or 118 // "owner/name/files/<refkind>/<refvalue>[/<dir>]"). 119 pub fn parse(s: []const u8) ?RepoFiles { 120 const s1 = std.mem.indexOfScalar(u8, s, '/') orelse return null; 121 const owner = s[0..s1]; 122 const after = s[s1 + 1 ..]; 123 const s2 = std.mem.indexOfScalar(u8, after, '/'); 124 const name = if (s2) |i| after[0..i] else after; 125 if (owner.len == 0 or name.len == 0) return null; 126 var result: RepoFiles = .{ 127 .identity = s[0 .. s1 + 1 + name.len], 128 .owner = owner, 129 .name = name, 130 .ref_kind = null, 131 .ref_value = "", 132 .dir = "", 133 }; 134 // the tail after "owner/name/". absent (or a bare "files") = default root. 135 const tail = if (s2) |i| after[i + 1 ..] else return result; 136 if (std.mem.eql(u8, tail, files_seg)) return result; 137 if (!std.mem.startsWith(u8, tail, files_seg ++ "/")) return result; 138 // "<refkind>/<refvalue>[/<dir>]" 139 const ref_part = tail[files_seg.len + 1 ..]; 140 const k1 = std.mem.indexOfScalar(u8, ref_part, '/') orelse return result; 141 const kind = RefOrOid.fromSeg(ref_part[0..k1]) orelse return result; 142 const after_kind = ref_part[k1 + 1 ..]; 143 const k2 = std.mem.indexOfScalar(u8, after_kind, '/'); 144 const value = if (k2) |i| after_kind[0..i] else after_kind; 145 if (value.len == 0) return result; 146 result.ref_kind = kind; 147 result.ref_value = value; 148 result.dir = if (k2) |i| after_kind[i + 1 ..] else ""; 149 return result; 150 } 151 }; 152 153 // build a `.repo_files` route for "owner/name" (identity) at `dir` ("" = the 154 // ref's root) pinned to `ref_kind`/`ref_value`, showing the file content 155 // window starting at line `after` (0 = the first window, dropped from the 156 // url). a null ref_kind yields the bare default-branch root. null if the 157 // result doesn't fit the inline name. 158 pub fn repoFilesRoute(identity: []const u8, ref_kind: ?RefOrOid, ref_value: []const u8, dir: []const u8, after: usize) ?RoutablePage { 159 const kind = ref_kind orelse return .{ .repo_files = .{ .name = Array(repo_route_max_len).from(identity) orelse return null, .after = after } }; 160 var buf: [repo_route_max_len]u8 = undefined; 161 const s = if (dir.len == 0) 162 std.fmt.bufPrint(&buf, "{s}/" ++ files_seg ++ "/{s}/{s}", .{ identity, @tagName(kind), ref_value }) catch return null 163 else 164 std.fmt.bufPrint(&buf, "{s}/" ++ files_seg ++ "/{s}/{s}/{s}", .{ identity, @tagName(kind), ref_value, dir }) catch return null; 165 return .{ .repo_files = .{ .name = Array(repo_route_max_len).from(s) orelse return null, .after = after } }; 166 } 167 168 // the ref/oid a `.repo_commits` route's stored string walks from. kind is 169 // null for the bare "owner/name/commits" (the repo's default branch). the 170 // returned value slices into `s`. 171 pub const CommitsRef = struct { ref_or_oid: ?RefOrOid, value: []const u8 }; 172 pub fn repoCommitsRef(s: []const u8) CommitsRef { 173 const marker = "/" ++ commits_seg ++ "/"; 174 const i = std.mem.indexOf(u8, s, marker) orelse return .{ .ref_or_oid = null, .value = "" }; 175 const ref_part = s[i + marker.len ..]; // "<refkind>/<refvalue>" 176 const k1 = std.mem.indexOfScalar(u8, ref_part, '/') orelse return .{ .ref_or_oid = null, .value = "" }; 177 const kind = RefOrOid.fromSeg(ref_part[0..k1]) orelse return .{ .ref_or_oid = null, .value = "" }; 178 const value = ref_part[k1 + 1 ..]; 179 if (value.len == 0) return .{ .ref_or_oid = null, .value = "" }; 180 return .{ .ref_or_oid = kind, .value = value }; 181 } 182 183 // build a `.repo_commits` route for "owner/name" (identity), walking from 184 // `ref_or_oid`/`value` (a null ref_or_oid yields the bare default-branch 185 // route). always carries the `commits` marker so the bare route 186 // ("owner/name/commits") doesn't collide with the files root. 187 pub fn repoCommitsRoute(identity: []const u8, ref_or_oid: ?RefOrOid, value: []const u8, after: usize) ?RoutablePage { 188 var buf: [repo_route_max_len]u8 = undefined; 189 const s = if (ref_or_oid) |kind| 190 std.fmt.bufPrint(&buf, "{s}/" ++ commits_seg ++ "/{s}/{s}", .{ identity, @tagName(kind), value }) catch return null 191 else 192 std.fmt.bufPrint(&buf, "{s}/" ++ commits_seg, .{identity}) catch return null; 193 return .{ .repo_commits = .{ .name = Array(repo_route_max_len).from(s) orelse return null, .after = after } }; 194 } 195 196 // build a `.repo_refs` route for "owner/name" (identity) paginating `kind`'s 197 // column to `after` (0 = the first window, the other column always at 0). 198 pub fn repoRefsRoute(identity: []const u8, kind: RefKind, after: usize) ?RoutablePage { 199 return .{ .repo_refs = .{ .name = Array(repo_route_max_len).from(identity) orelse return null, .kind = kind, .after = after } }; 200 } 201 202 // an inline, owned array of data. keeping it in the route (rather than a 203 // borrowed slice) makes RoutablePage a plain value: it can be copied, stored 204 // in history, and serialized without any arena tracking. 205 pub fn Array(comptime max_len: usize) type { 206 return struct { 207 bytes: [max_len]u8 = undefined, 208 len: u16 = 0, 209 210 pub fn from(s: []const u8) ?Array(max_len) { 211 if (s.len > max_len) return null; 212 var name = Array(max_len){ .len = @intCast(s.len) }; 213 @memcpy(name.bytes[0..s.len], s); 214 return name; 215 } 216 217 pub fn slice(self: *const Array(max_len)) []const u8 { 218 return self.bytes[0..self.len]; 219 } 220 }; 221 } 222 223 pub fn url(comptime self: RoutablePage) []const u8 { 224 return switch (self) { 225 .home_users => "/users", 226 .home_repos => "/repos", 227 .home_settings => "/settings", 228 .home_auth => "/auth", 229 .user_repos, .user_settings, .user_auth => @compileError("user routes are dynamic; use urlAlloc"), 230 .repo_files, .repo_commits, .repo_refs, .repo_settings, .repo_auth => @compileError("repo routes are dynamic; use urlAlloc"), 231 }; 232 } 233 234 pub fn urlAlloc(self: RoutablePage, arena: *std.heap.ArenaAllocator) ![]const u8 { 235 return switch (self) { 236 .home_users => |after| if (after == 0) @as([]const u8, "/users") else try std.fmt.allocPrint(arena.allocator(), "/users?after={d}", .{after}), 237 .home_repos => |after| if (after == 0) @as([]const u8, "/repos") else try std.fmt.allocPrint(arena.allocator(), "/repos?after={d}", .{after}), 238 .user_repos => |u| if (u.after == 0) 239 try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/repos", .{u.name.slice()}) 240 else 241 try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/repos?after={d}", .{ u.name.slice(), u.after }), 242 .user_settings => |name| try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/settings", .{name.slice()}), 243 .user_auth => |name| try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/auth", .{name.slice()}), 244 .repo_files => |f| if (f.after == 0) 245 try std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}", .{f.name.slice()}) 246 else 247 try std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}?after={d}", .{ f.name.slice(), f.after }), 248 .repo_commits => |c| if (c.after == 0) 249 try std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}", .{c.name.slice()}) 250 else 251 try std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}?after={d}", .{ c.name.slice(), c.after }), 252 .repo_refs => |r| if (r.after == 0) 253 try std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}/refs", .{r.name.slice()}) 254 else 255 try std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}/refs?kind={s}&after={d}", .{ r.name.slice(), @tagName(r.kind), r.after }), 256 .repo_settings => |name| try std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}/settings", .{name.slice()}), 257 .repo_auth => |name| try std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}/auth", .{name.slice()}), 258 inline else => |_, tag| url(tag), 259 }; 260 } 261 262 pub fn parent(self: RoutablePage) PageKind { 263 return switch (self) { 264 .home_users, .home_repos, .home_settings, .home_auth => .home, 265 .user_repos, .user_settings, .user_auth => .user, 266 .repo_files, .repo_commits, .repo_refs, .repo_settings, .repo_auth => .repo, 267 }; 268 } 269 270 // parse a path plus its raw query string 271 pub fn fromUrl(path: []const u8, query: ?[]const u8) ?RoutablePage { 272 const after = uintParam(query, "after") orelse 0; 273 if (std.mem.eql(u8, path, "/")) return default; 274 if (std.mem.eql(u8, path, "/users")) return .{ .home_users = after }; 275 if (std.mem.eql(u8, path, "/repos")) return .{ .home_repos = after }; 276 if (std.mem.eql(u8, path, "/settings")) return .home_settings; 277 if (std.mem.eql(u8, path, "/auth")) return .home_auth; 278 // /user/<name>[/repos|/settings|/auth] 279 if (std.mem.startsWith(u8, path, user_segment)) { 280 const rest = path[user_segment.len..]; 281 const slash = std.mem.indexOfScalar(u8, rest, '/'); 282 const name = if (slash) |s| rest[0..s] else rest; 283 if (name.len == 0) return null; 284 const parsed = Array(evt.User.name_max_len).from(name) orelse return null; // name too long 285 if (slash) |s| { 286 const sub = rest[s + 1 ..]; 287 if (std.mem.eql(u8, sub, "repos")) return .{ .user_repos = .{ .name = parsed, .after = after } }; 288 if (std.mem.eql(u8, sub, "settings")) return .{ .user_settings = parsed }; 289 if (std.mem.eql(u8, sub, "auth")) return .{ .user_auth = parsed }; 290 return null; // unknown sub-path 291 } 292 return .{ .user_repos = .{ .name = parsed, .after = after } }; 293 } 294 // /repo/<username>/<reponame> (files root), then optionally /settings, 295 // /auth, or /files/<dir> for a directory in the files tab. the `repo` 296 // variant stores "username/reponame" (root) or 297 // "username/reponame/files/<dir>"; settings/auth store just the pair. 298 if (std.mem.startsWith(u8, path, repo_segment)) { 299 const rest = path[repo_segment.len..]; 300 const user_slash = std.mem.indexOfScalar(u8, rest, '/') orelse return null; 301 const after_user = rest[user_slash + 1 ..]; 302 const repo_slash = std.mem.indexOfScalar(u8, after_user, '/'); 303 const repo_name = if (repo_slash) |s| after_user[0..s] else after_user; 304 // reject an empty username or reponame 305 if (user_slash == 0 or repo_name.len == 0) return null; 306 const pair = rest[0 .. user_slash + 1 + repo_name.len]; // "username/reponame" 307 if (repo_slash) |s| { 308 const sub = after_user[s + 1 ..]; 309 if (std.mem.eql(u8, sub, "refs")) return .{ .repo_refs = .{ 310 .name = Array(repo_route_max_len).from(pair) orelse return null, 311 .kind = refsKind(query), 312 .after = after, 313 } }; 314 if (std.mem.eql(u8, sub, "settings")) return .{ .repo_settings = Array(repo_route_max_len).from(pair) orelse return null }; 315 if (std.mem.eql(u8, sub, "auth")) return .{ .repo_auth = Array(repo_route_max_len).from(pair) orelse return null }; 316 if (std.mem.eql(u8, sub, files_seg)) return repoFilesRoute(pair, null, "", "", after); // trailing /files == default-branch root 317 if (std.mem.startsWith(u8, sub, files_seg ++ "/")) { 318 // "files/<refkind>/<refvalue>[/<dir>]" 319 const ref_part = sub[files_seg.len + 1 ..]; 320 const k1 = std.mem.indexOfScalar(u8, ref_part, '/') orelse return null; 321 const kind = RefOrOid.fromSeg(ref_part[0..k1]) orelse return null; 322 const after_kind = ref_part[k1 + 1 ..]; 323 const k2 = std.mem.indexOfScalar(u8, after_kind, '/'); 324 const value = if (k2) |i| after_kind[0..i] else after_kind; 325 if (value.len == 0) return null; 326 const dir = if (k2) |i| after_kind[i + 1 ..] else ""; 327 return repoFilesRoute(pair, kind, value, dir, after); 328 } 329 if (std.mem.eql(u8, sub, commits_seg)) return repoCommitsRoute(pair, null, "", after); // trailing /commits == default branch 330 if (std.mem.startsWith(u8, sub, commits_seg ++ "/")) { 331 // "commits/<refkind>/<refvalue>" 332 const ref_part = sub[commits_seg.len + 1 ..]; 333 const k1 = std.mem.indexOfScalar(u8, ref_part, '/') orelse return null; 334 const kind = RefOrOid.fromSeg(ref_part[0..k1]) orelse return null; 335 const value = ref_part[k1 + 1 ..]; 336 if (value.len == 0) return null; 337 return repoCommitsRoute(pair, kind, value, after); 338 } 339 return null; // unknown sub-path 340 } 341 return repoFilesRoute(pair, null, "", "", after); 342 } 343 return null; 344 } 345 346 // the refs column a "kind=" query param names; absent or unrecognized reads 347 // as the branches column. 348 fn refsKind(query: ?[]const u8) RefKind { 349 const qs = query orelse return .branch; 350 var it = std.mem.splitScalar(u8, qs, '&'); 351 while (it.next()) |pair| { 352 const eq = std.mem.indexOfScalar(u8, pair, '=') orelse continue; 353 if (std.mem.eql(u8, pair[0..eq], "kind") and std.mem.eql(u8, pair[eq + 1 ..], "tag")) return .tag; 354 } 355 return .branch; 356 } 357 358 // read a "key=<uint>" value from a raw "a=1&b=2" query string. 359 fn uintParam(query: ?[]const u8, key: []const u8) ?usize { 360 const qs = query orelse return null; 361 var it = std.mem.splitScalar(u8, qs, '&'); 362 while (it.next()) |pair| { 363 const eq = std.mem.indexOfScalar(u8, pair, '=') orelse continue; 364 if (std.mem.eql(u8, pair[0..eq], key)) 365 return std.fmt.parseInt(usize, pair[eq + 1 ..], 10) catch null; 366 } 367 return null; 368 } 369 370 pub fn eql(a: RoutablePage, b: RoutablePage) bool { 371 if (std.meta.activeTag(a) != std.meta.activeTag(b)) return false; 372 return switch (a) { 373 .home_users => |a_after| a_after == b.home_users, 374 .home_repos => |a_after| a_after == b.home_repos, 375 .user_repos => |a_u| std.mem.eql(u8, a_u.name.slice(), b.user_repos.name.slice()) and a_u.after == b.user_repos.after, 376 .user_settings => |a_name| std.mem.eql(u8, a_name.slice(), b.user_settings.slice()), 377 .user_auth => |a_name| std.mem.eql(u8, a_name.slice(), b.user_auth.slice()), 378 .repo_files => |a_f| std.mem.eql(u8, a_f.name.slice(), b.repo_files.name.slice()) and a_f.after == b.repo_files.after, 379 .repo_commits => |a_c| std.mem.eql(u8, a_c.name.slice(), b.repo_commits.name.slice()) and a_c.after == b.repo_commits.after, 380 .repo_refs => |a_r| std.mem.eql(u8, a_r.name.slice(), b.repo_refs.name.slice()) and a_r.kind == b.repo_refs.kind and a_r.after == b.repo_refs.after, 381 .repo_settings => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_settings.slice()), 382 .repo_auth => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_auth.slice()), 383 else => true, 384 }; 385 } 386 387 // true when following a link from `b` to `a` (both repo routes) should reload 388 // rather than stay in page 389 pub fn repoPageChanged(a: RoutablePage, b: RoutablePage) bool { 390 if (a.parent() != .repo or b.parent() != .repo) return false; 391 if (std.meta.activeTag(a) == .repo_refs and std.meta.activeTag(b) == .repo_refs and 392 a.repo_refs.after == 0 and b.repo_refs.after == 0) 393 return !std.mem.eql(u8, a.repo_refs.name.slice(), b.repo_refs.name.slice()); 394 return !a.eql(b); 395 } 396 397 // true when `a` and `b` are the same user paginated to a different repos 398 // window. switching between a user's tabs is in-page (header-handled), so 399 // only a changed `after` on the repos list navigates. 400 pub fn userPageChanged(a: RoutablePage, b: RoutablePage) bool { 401 return switch (a) { 402 .user_repos => |aa| switch (b) { 403 .user_repos => |bb| std.mem.eql(u8, aa.name.slice(), bb.name.slice()) and aa.after != bb.after, 404 else => false, 405 }, 406 else => false, 407 }; 408 } 409 410 // true when `a` and `b` are the same home list tab paginated to a different 411 // window. switching between the users/repos tabs is in-page (the home page 412 // holds both lists), so only a changed `after` on the same tab navigates. 413 pub fn homePageChanged(a: RoutablePage, b: RoutablePage) bool { 414 return switch (a) { 415 .home_users => |aa| switch (b) { 416 .home_users => |bb| aa != bb, 417 else => false, 418 }, 419 .home_repos => |aa| switch (b) { 420 .home_repos => |bb| aa != bb, 421 else => false, 422 }, 423 else => false, 424 }; 425 } 426 427 // serialize as { "kind": <tag>, "name"?: <name>, "after"?: <n> }. the default 428 // union(enum) codec doesn't round-trip here: Stringify emits a void 429 // variant as a bare tag string, but the parser expects an object — so the 430 // server->wasm Snapshot JSON would fail to parse. 431 pub fn jsonStringify(self: RoutablePage, jw: anytype) !void { 432 try jw.beginObject(); 433 try jw.objectField("kind"); 434 try jw.write(@tagName(self)); 435 switch (self) { 436 .user_repos => |u| { 437 try jw.objectField("name"); 438 try jw.write(u.name.slice()); 439 try jw.objectField("after"); 440 try jw.write(u.after); 441 }, 442 .user_settings, .user_auth => |name| { 443 try jw.objectField("name"); 444 try jw.write(name.slice()); 445 }, 446 .repo_settings, .repo_auth => |name| { 447 try jw.objectField("name"); 448 try jw.write(name.slice()); 449 }, 450 .repo_files => |f| { 451 try jw.objectField("name"); 452 try jw.write(f.name.slice()); 453 try jw.objectField("after"); 454 try jw.write(f.after); 455 }, 456 .repo_commits => |c| { 457 try jw.objectField("name"); 458 try jw.write(c.name.slice()); 459 try jw.objectField("after"); 460 try jw.write(c.after); 461 }, 462 .repo_refs => |r| { 463 try jw.objectField("name"); 464 try jw.write(r.name.slice()); 465 // "kind" already holds the union tag, so the paginated column 466 // travels under a distinct field. 467 try jw.objectField("ref_kind"); 468 try jw.write(@tagName(r.kind)); 469 try jw.objectField("after"); 470 try jw.write(r.after); 471 }, 472 .home_users, .home_repos => |after| { 473 try jw.objectField("after"); 474 try jw.write(after); 475 }, 476 else => {}, 477 } 478 try jw.endObject(); 479 } 480 481 pub fn jsonParse(allocator: std.mem.Allocator, source: anytype, options: std.json.ParseOptions) !RoutablePage { 482 const Helper = struct { kind: std.meta.Tag(RoutablePage), name: ?[]const u8 = null, after: usize = 0, ref_kind: ?[]const u8 = null }; 483 const helper = try std.json.innerParse(Helper, allocator, source, options); 484 const parseName = struct { 485 // errors must stay within std.json's ParseError set; ValueTooLong 486 // is its member for an over-long field. 487 fn f(comptime max_len: usize, maybe: ?[]const u8) !Array(max_len) { 488 return Array(max_len).from(maybe orelse return error.MissingField) orelse error.ValueTooLong; 489 } 490 }.f; 491 return switch (helper.kind) { 492 .home_users => .{ .home_users = helper.after }, 493 .home_repos => .{ .home_repos = helper.after }, 494 .home_settings => .home_settings, 495 .home_auth => .home_auth, 496 .user_repos => .{ .user_repos = .{ .name = try parseName(evt.User.name_max_len, helper.name), .after = helper.after } }, 497 .user_settings => .{ .user_settings = try parseName(evt.User.name_max_len, helper.name) }, 498 .user_auth => .{ .user_auth = try parseName(evt.User.name_max_len, helper.name) }, 499 .repo_files => .{ .repo_files = .{ .name = try parseName(repo_route_max_len, helper.name), .after = helper.after } }, 500 .repo_commits => .{ .repo_commits = .{ .name = try parseName(repo_route_max_len, helper.name), .after = helper.after } }, 501 .repo_refs => .{ .repo_refs = .{ 502 .name = try parseName(repo_route_max_len, helper.name), 503 .kind = if (helper.ref_kind) |k| (if (std.mem.eql(u8, k, "tag")) .tag else .branch) else .branch, 504 .after = helper.after, 505 } }, 506 .repo_settings => .{ .repo_settings = try parseName(repo_route_max_len, helper.name) }, 507 .repo_auth => .{ .repo_auth = try parseName(repo_route_max_len, helper.name) }, 508 }; 509 } 510 }; 511 512 // a `RefOrOid` resolved against an on-disk repo to the commit oid it points at 513 fn isUnreserved(c: u8) bool { 514 return std.ascii.isAlphanumeric(c) or c == '-' or c == '.' or c == '_' or c == '~'; 515 } 516 517 // percent-encode a ref name for use as a single url path segment. 518 pub fn urlEncodeRef(aa: std.mem.Allocator, raw: []const u8) ![]const u8 { 519 var out: std.Io.Writer.Allocating = .init(aa); 520 try std.Uri.Component.percentEncode(&out.writer, raw, isUnreserved); 521 return out.written(); 522 } 523 524 // a resolved ref/oid for a repo opened with `repo_opts` 525 pub fn ResolvedRefOrOid(comptime repo_opts: rp.RepoOpts(.xit)) type { 526 return struct { 527 pub const hex_len = hash.hexLen(repo_opts.hash); 528 529 // the concrete ref/oid (a null request resolves to the default branch) 530 ref_or_oid: RoutablePage.RefOrOid, 531 // its branch/tag name or oid, url-encoded (ref names may contain '/', so 532 // the route layer — which splits on '/' — stores them encoded). duped 533 // into `aa`. 534 value: []const u8, 535 // the commit oid it points at 536 oid: [hex_len]u8, 537 538 const Self = @This(); 539 540 // resolve a requested ref/oid (null = the repo's default branch) to a 541 // concrete ref/oid plus the commit oid it points at. `requested_value` is 542 // the url-encoded form (as it appears in the route). null when it doesn't 543 // resolve (an unknown branch/tag, or a malformed/unknown oid). 544 pub fn init( 545 repo: *rp.Repo(.xit, repo_opts), 546 io: std.Io, 547 aa: std.mem.Allocator, 548 requested_ref_or_oid: ?RoutablePage.RefOrOid, 549 requested_value: []const u8, 550 ) !?Self { 551 var ref_or_oid: RoutablePage.RefOrOid = requested_ref_or_oid orelse .branch; 552 // the decoded ref name / oid to look up. a named ref arrives url-encoded. 553 var value: []const u8 = if (requested_ref_or_oid == null) 554 requested_value 555 else 556 std.Uri.percentDecodeInPlace(try aa.dupe(u8, requested_value)); 557 // no ref named: fall back to HEAD's branch (or its oid when detached). 558 if (requested_ref_or_oid == null) { 559 var head_buf: [rf.MAX_REF_CONTENT_SIZE]u8 = undefined; 560 if (repo.head(io, &head_buf)) |head| switch (head) { 561 .ref => |r| { 562 ref_or_oid = .branch; 563 value = r.name; 564 }, 565 .oid => |o| { 566 ref_or_oid = .object; 567 value = o; 568 }, 569 } else |_| {} 570 } 571 572 var oid: [hex_len]u8 = undefined; 573 switch (ref_or_oid) { 574 .object => { 575 if (value.len != hex_len) return null; 576 @memcpy(&oid, value); 577 }, 578 .branch, .tag => { 579 const ref_kind: rf.RefKind = if (ref_or_oid == .branch) .head else .tag; 580 oid = (repo.readRef(io, .{ .kind = ref_kind, .name = value }) catch null) orelse return null; 581 }, 582 } 583 // store url-encoded so the route layer can hold the value verbatim. 584 return .{ .ref_or_oid = ref_or_oid, .value = try urlEncodeRef(aa, value), .oid = oid }; 585 } 586 }; 587 } 588 589 // per-connection mutable state. each SSH session / web session / local TUI 590 // run gets its own. 591 pub const Session = struct { 592 data: Data = .{}, 593 // session-lifetime allocations: login/user_id, persisted prefs, queued 594 // actions. lives as long as the connection. 595 arena: *std.heap.ArenaAllocator, 596 // current page's allocations: page data and the page-scoped strings widgets 597 // build (form actions, links). owned by Nav, swapped on each navigation, so 598 // it doesn't accumulate over a long-lived session. on the web/wasm paths, 599 // where a render is one-shot, this points at the same arena as `arena`. 600 page_arena: *std.heap.ArenaAllocator, 601 haxy_moment: ?evt.AdminDB.HashMap(.read_only) = null, // db cursor (null on the wasm side) 602 // filesystem io and the path to <server>/repos, for opening on-disk repos 603 // during page construction. both null on wasm, which has no filesystem and 604 // rebuilds pages from the serialized snapshot rather than from disk. 605 io: ?std.Io = null, 606 repos_dir: ?[]const u8 = null, 607 pending: std.ArrayList(Action) = .empty, // actions queued by widgets this frame 608 // focus id -> the live TextInput, refreshed each frame by the views that own 609 // inputs. web/wasm form handling looks widgets up here by focus id. 610 text_inputs: std.AutoHashMapUnmanaged(usize, *wgt.TextInput(Widget)) = .empty, 611 nav_back: bool = false, // set by input (escape) to request the native TUI pop a page; see Nav 612 refresh_requested: bool = false, // set by input (ctrl+r) 613 // a requested forward navigation. set this (via navigate) to move to a new 614 // page; Nav.sync builds it and then copies it into current_page, clearing 615 // this back to null. setting current_page directly only updates the url and 616 // does not navigate. 617 next_page: ?RoutablePage = null, 618 is_terminal: bool = false, // true on remote SSH and local TUI 619 // port the web UI is served on, for the TUI/SSH footer's "http://localhost:<port>..." 620 // url. null on the web itself (no footer there). 621 web_port: ?u16 = null, 622 quit_requested: bool = false, 623 624 const Self = @This(); 625 626 // serializable data sent down to web client 627 pub const Data = struct { 628 user_id: ?[]const u8 = null, 629 // a transient outcome to surface from the last /login POST attempt 630 login_failure: ?Home.Auth.Login.Failure = null, 631 current_page: RoutablePage = .default, 632 // whether to render the ANSI art backdrop 633 enable_ansi: bool = true, 634 }; 635 636 // a user-initiated state change. widgets enqueue these on the session during 637 // input instead of mutating state or touching the DB themselves; the host 638 // drains them each frame (see applyAndWritePending / applyPending). this keeps DB 639 // side effects out of the widget tree and gives every render path one place to 640 // turn a UI action into a state change + event. 641 pub const Action = union(enum) { 642 toggle_ansi, 643 }; 644 645 pub fn init( 646 arena: *std.heap.ArenaAllocator, 647 repo: *rp.Repo(.xit, evt.admin_repo_opts), 648 data: Data, 649 ) !Self { 650 var session = Self{ 651 .data = data, 652 .arena = arena, 653 // until a host swaps in a page-scoped arena (Nav does this), page 654 // allocations land in the session arena. on the web path that's the 655 // intended behavior, since the whole arena is per-request. 656 .page_arena = arena, 657 .haxy_moment = try evt.currentMoment(evt.admin_repo_opts, repo), 658 }; 659 try session.loadUserPrefs(); 660 return session; 661 } 662 663 // load the logged-in user's persisted preferences from the db 664 pub fn loadUserPrefs(self: *Self) !void { 665 const user_id = self.data.user_id orelse return; 666 const moment = self.haxy_moment orelse return; 667 if (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, self.arena, user_id)) |user| { 668 self.data.enable_ansi = user.enable_ansi; 669 } 670 } 671 672 // queue an action for the host to drain this frame. 673 pub fn push(self: *Self, action: Action) !void { 674 try self.pending.append(self.arena.allocator(), action); 675 } 676 677 // apply a single action's in-memory effect only (no persistence). 678 fn apply(self: *Self, action: Action) void { 679 switch (action) { 680 .toggle_ansi => self.data.enable_ansi = !self.data.enable_ansi, 681 } 682 } 683 684 // drain the session's queued actions by applying them to the session. 685 // used on the wasm path, which has no repo to persist to. 686 pub fn applyPending(self: *Self) void { 687 for (self.pending.items) |action| self.apply(action); 688 self.pending.clearRetainingCapacity(); 689 } 690 691 // drain the session's queued actions by applying them to the session and 692 // writing them to the db 693 pub fn applyAndWritePending( 694 self: *Self, 695 io: std.Io, 696 allocator: std.mem.Allocator, 697 repo: *rp.Repo(.xit, evt.admin_repo_opts), 698 ) !void { 699 defer self.pending.clearRetainingCapacity(); 700 for (self.pending.items) |action| { 701 self.apply(action); 702 switch (action) { 703 .toggle_ansi => if (self.data.user_id) |user_id| { 704 try evt.User.toggleAnsi(evt.admin_repo_opts, io, allocator, repo, user_id); 705 }, 706 } 707 } 708 } 709 710 // reload the moment from the admin repo 711 pub fn reloadMoment(self: *Self, repo: *rp.Repo(.xit, evt.admin_repo_opts)) !void { 712 self.haxy_moment = try evt.currentMoment(evt.admin_repo_opts, repo); 713 } 714 715 // request a forward navigation to `route`; the host consumes next_page 716 // (Nav.sync on the terminal, the wasm tick on the web). 717 pub fn navigate(self: *Session, route: RoutablePage) !void { 718 self.next_page = route; 719 } 720 }; 721 722 pub fn run(io: std.Io, allocator: std.mem.Allocator, session: *Session, repo: *rp.Repo(.xit, evt.admin_repo_opts)) !void { 723 var nav = try Nav.init(allocator, session); 724 defer nav.deinit(allocator); 725 726 var terminal = try term.Terminal.init(io, allocator); 727 defer terminal.deinit(io); 728 729 // set term as active so it will be properly cooked 730 // when a panic/segfault happens 731 term.setActive(&terminal); 732 defer term.setActive(null); 733 734 var last_size = layout.Size{ .width = 0, .height = 0 }; 735 var last_grid = try Grid.init(allocator, last_size); 736 defer last_grid.deinit(); 737 738 while (!terminal.shouldQuit()) { 739 const grid_changed = try terminal.render(&nav.root, &last_grid, &last_size); 740 741 // process any inputs. 742 // 743 // if the grid didn't change, then first do a blocking 744 // read, so the thread will sleep until further input. 745 // after that, all remaining reads are non-blocking so 746 // we can process the rest of the queued inputs. 747 // 748 // if the grid *did* change, then only do non-blocking 749 // reads. we do not want to sleep the thread because 750 // there may be an animation that requires more looping. 751 var blocking = !grid_changed; 752 while (try terminal.readKey(io, blocking)) |key| { 753 blocking = false; 754 try inputKey(allocator, &nav.root, key, session); 755 } 756 757 // local run has no repo to persist to, so just apply in-memory 758 session.applyPending(); 759 760 // pick up data written by other handles so the next navigation 761 // builds its page from a current moment 762 try session.reloadMoment(repo); 763 764 // reconcile navigation: forward to a new page, or back on escape. 765 try nav.sync(allocator, session); 766 767 // the quit button (on the quit tab) asks the host to tear down. 768 if (session.quit_requested) terminal.requestQuit(); 769 770 try nav.root.build(allocator, .{ 771 .min_size = .{ .width = null, .height = null }, 772 .max_size = .{ .width = last_size.width, .height = last_size.height }, 773 }, nav.root.getFocus()); 774 } 775 } 776 777 pub fn inputKey(allocator: std.mem.Allocator, root: *Widget, key: Key, session: *Session) !void { 778 switch (key) { 779 // request a navigation pop; the host's Nav.sync goes back a page, or 780 // quits when there's no history left. 781 .escape => session.nav_back = true, 782 .ctrl => |letter| switch (letter) { 783 'r' => session.refresh_requested = true, 784 else => try root.input(allocator, key, root.getFocus()), 785 }, 786 .enter => { 787 const root_focus = root.getFocus(); 788 if (root_focus.grandchild_id) |gid| { 789 // follow a cross-page link 790 if (crossPageLink(root_focus, gid, session.data.current_page)) |route| { 791 return session.navigate(route); 792 } 793 } 794 try root.input(allocator, key, root_focus); 795 }, 796 .mouse => |mouse| { 797 if (mouse.action == .press and mouse.action.press == .left) { 798 const root_focus = root.getFocus(); 799 var clicked: ?usize = null; 800 var iter = root_focus.children.iterator(); 801 while (iter.next()) |entry| { 802 const child = entry.value_ptr.*; 803 if (!child.focus.focusable) continue; 804 const r = child.rect; 805 if (mouse.x >= r.x and mouse.y >= r.y and 806 mouse.x < r.x + r.size.width and mouse.y < r.y + r.size.height) 807 { 808 clicked = entry.key_ptr.*; 809 break; 810 } 811 } 812 if (clicked) |focus_id| { 813 // follow a cross-page link 814 if (crossPageLink(root_focus, focus_id, session.data.current_page)) |route| { 815 return session.navigate(route); 816 } 817 root_focus.setFocus(focus_id); 818 } 819 // forward the press into the widget tree so buttons (and any 820 // future click-aware widgets) can react. widgets that don't 821 // care about presses ignore it. 822 try root.input(allocator, key, root.getFocus()); 823 } else { 824 try root.input(allocator, key, root.getFocus()); 825 } 826 }, 827 else => try root.input(allocator, key, root.getFocus()), 828 } 829 } 830 831 // if the focus target at focus_id is an `a:` link that should navigate (a 832 // different parent page, or a different files directory within the repo page), 833 // return its route; otherwise null. lets a host turn a click / enter on such a 834 // link into a navigation rather than a focus change. 835 pub fn crossPageLink(root_focus: *Focus, focus_id: usize, current: RoutablePage) ?RoutablePage { 836 const child = root_focus.children.get(focus_id) orelse return null; 837 const custom = switch (child.focus.kind) { 838 .custom => |c| c, 839 else => return null, 840 }; 841 const a_prefix = "a:"; 842 if (!std.mem.startsWith(u8, custom, a_prefix)) return null; 843 const url = custom[a_prefix.len..]; 844 const q = std.mem.indexOfScalar(u8, url, '?'); 845 const route = RoutablePage.fromUrl(if (q) |i| url[0..i] else url, if (q) |i| url[i + 1 ..] else null) orelse return null; 846 // a link to a different parent page always navigates; within a page, a 847 // files-directory / commits-page / list-window change navigates while tab 848 // links stay in-page (header-handled). 849 if (route.parent() != current.parent() or RoutablePage.repoPageChanged(route, current) or RoutablePage.homePageChanged(route, current) or RoutablePage.userPageChanged(route, current)) return route; 850 return null; 851 } 852 853 // native-TUI navigation 854 pub const Nav = struct { 855 root: Widget, 856 route: RoutablePage, 857 // backs the current page (its Page data and the page-scoped strings its 858 // widgets build). owned here, swapped on each navigation. session.page_arena 859 // tracks whichever of these is current so widgets allocate into it. 860 arena: *std.heap.ArenaAllocator, 861 history: std.ArrayList(Entry), 862 863 // each retained page keeps its own arena, freed when the page leaves the 864 // stack (popped on back, evicted at cap, or on deinit). this is what keeps a 865 // long-lived session from accumulating every page it ever visited. 866 const Entry = struct { root: Widget, route: RoutablePage, arena: *std.heap.ArenaAllocator }; 867 868 // cap on retained back-history so the chain can't grow memory without bound 869 const max_history: usize = 16; 870 871 pub fn init(allocator: std.mem.Allocator, session: *Session) !Nav { 872 const arena = try allocator.create(std.heap.ArenaAllocator); 873 arena.* = std.heap.ArenaAllocator.init(allocator); 874 errdefer { 875 arena.deinit(); 876 allocator.destroy(arena); 877 } 878 879 session.page_arena = arena; 880 const route = session.data.current_page; 881 882 const page = try arena.allocator().create(Page); 883 page.* = try Page.init(arena, session, route); 884 return .{ 885 .root = try initRoot(allocator, page, session), 886 .route = route, 887 .arena = arena, 888 .history = .empty, 889 }; 890 } 891 892 pub fn deinit(self: *Nav, allocator: std.mem.Allocator) void { 893 self.root.deinit(allocator); 894 freeArena(allocator, self.arena); 895 for (self.history.items) |*entry| { 896 entry.root.deinit(allocator); 897 freeArena(allocator, entry.arena); 898 } 899 self.history.deinit(allocator); 900 } 901 902 fn freeArena(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator) void { 903 arena.deinit(); 904 allocator.destroy(arena); 905 } 906 907 // reconcile the displayed root with the session's navigation state. a 908 // forward nav (current_page moved to a different parent page) pushes the 909 // current root and builds the new page in a fresh arena; a back request 910 // frees the current page and restores the previous one. when escape is 911 // pressed with no history left we switch to the quit tab instead of quitting. 912 pub fn sync(self: *Nav, allocator: std.mem.Allocator, session: *Session) !void { 913 // refresh: rebuild the current page in place from a current moment 914 if (session.refresh_requested) { 915 session.refresh_requested = false; 916 if (session.haxy_moment != null) { 917 const arena = try allocator.create(std.heap.ArenaAllocator); 918 arena.* = std.heap.ArenaAllocator.init(allocator); 919 errdefer freeArena(allocator, arena); 920 921 session.page_arena = arena; 922 923 const page = try arena.allocator().create(Page); 924 page.* = try Page.init(arena, session, self.route); 925 const new_root = try initRoot(allocator, page, session); 926 927 self.root.deinit(allocator); 928 freeArena(allocator, self.arena); 929 self.root = new_root; 930 self.arena = arena; 931 } 932 return; 933 } 934 935 if (session.nav_back) { 936 session.nav_back = false; 937 if (self.history.pop()) |entry| { 938 self.root.deinit(allocator); 939 freeArena(allocator, self.arena); 940 self.root = entry.root; 941 self.route = entry.route; 942 self.arena = entry.arena; 943 session.page_arena = entry.arena; 944 session.data.current_page = entry.route; 945 return; 946 } 947 // nothing to go back to; switch to the quit confirmation 948 const root_focus = self.root.getFocus(); 949 var iter = root_focus.children.iterator(); 950 while (iter.next()) |entry| { 951 switch (entry.value_ptr.focus.kind) { 952 .custom => |custom| if (std.mem.eql(u8, custom, Quit.tab_kind)) { 953 root_focus.setFocus(entry.key_ptr.*); 954 // a Stack only builds its selected child, so the quit 955 // button isn't in the focus tree until a build runs with 956 // the quit tab selected. build once, then send a 957 // synthetic arrow_down to drop focus from the tab onto 958 // the button so it's ready to confirm. 959 try self.root.build(allocator, .{ 960 .min_size = .{ .width = null, .height = 40 }, 961 .max_size = .{ .width = 80, .height = null }, 962 }, root_focus); 963 try self.root.input(allocator, .arrow_down, root_focus); 964 break; 965 }, 966 else => {}, 967 } 968 } 969 return; 970 } 971 972 // forward navigation: navigate() set next_page to the page to move to (a 973 // cross-page link or tab change crossing pages) 974 if (session.next_page) |route| { 975 session.next_page = null; 976 if (session.haxy_moment == null) return; 977 // the page we navigated to becomes the current page 978 session.data.current_page = route; 979 980 const arena = try allocator.create(std.heap.ArenaAllocator); 981 arena.* = std.heap.ArenaAllocator.init(allocator); 982 errdefer freeArena(allocator, arena); 983 984 session.page_arena = arena; 985 986 const page = try arena.allocator().create(Page); 987 page.* = try Page.init(arena, session, route); 988 const new_root = try initRoot(allocator, page, session); 989 990 try self.history.append(allocator, .{ .root = self.root, .route = self.route, .arena = self.arena }); 991 // drop the oldest entry (freeing its widget tree and arena) once over cap 992 if (self.history.items.len > max_history) { 993 var oldest = self.history.orderedRemove(0); 994 oldest.root.deinit(allocator); 995 freeArena(allocator, oldest.arena); 996 } 997 self.root = new_root; 998 self.route = route; 999 self.arena = arena; 1000 } 1001 } 1002 }; 1003 1004 pub fn initRoot(allocator: std.mem.Allocator, page: *const Page, session: *Session) !Widget { 1005 const page_widget: Widget = switch (page.*) { 1006 .home => |*p| .{ .home = try .init(allocator, p, session) }, 1007 .user => |*p| .{ .user = try .init(allocator, p, session) }, 1008 .repo => |*p| .{ .repo = try .init(allocator, p, session) }, 1009 }; 1010 1011 const demon_art = @embedFile("embed/demon.ans"); 1012 1013 // on the TUI/SSH, the page sits above a one-row footer showing the url 1014 var root = if (session.is_terminal) blk: { 1015 var box = try wgt.Box(Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 1016 errdefer box.deinit(allocator); 1017 const bg_id = bg_blk: { 1018 var background = try AnsiBackground.init(allocator, page_widget, demon_art, session); 1019 errdefer background.deinit(allocator); 1020 const id = background.getFocus().id; 1021 try box.children.put(allocator, id, .{ .widget = .{ .background = background }, .rect = null, .min_size = null }); 1022 break :bg_blk id; 1023 }; 1024 { 1025 var footer = try Footer.init(allocator, session); 1026 errdefer footer.deinit(allocator); 1027 try box.children.put(allocator, footer.getFocus().id, .{ .widget = .{ .footer = footer }, .rect = null, .min_size = .{ .width = null, .height = 1 } }); 1028 } 1029 box.getFocus().child_id = bg_id; 1030 break :blk Widget{ .box = box }; 1031 } else Widget{ .background = try AnsiBackground.init(allocator, page_widget, demon_art, session) }; 1032 errdefer root.deinit(allocator); 1033 1034 // input-owning views build their TextInputs in init — so reset the 1035 // focus-id -> *TextInput map here 1036 session.text_inputs.clearRetainingCapacity(); 1037 1038 try root.build(allocator, .{ 1039 .min_size = .{ .width = null, .height = 40 }, 1040 .max_size = .{ .width = 100, .height = null }, 1041 }, root.getFocus()); 1042 1043 return root; 1044 } 1045 1046 pub const Widget = union(enum) { 1047 text: wgt.Text(Widget), 1048 box: wgt.Box(Widget), 1049 text_box: wgt.TextBox(Widget), 1050 text_input: wgt.TextInput(Widget), 1051 scroll: wgt.Scroll(Widget), 1052 stack: wgt.Stack(Widget), 1053 flow_box: FlowBox, 1054 flow_box_scroll: FlowBox.Scroll, 1055 spacer: Spacer, 1056 center: Center, 1057 background: AnsiBackground, 1058 home: Home.View, 1059 user: User.View, 1060 repo: Repo.View, 1061 quit: Quit.View, 1062 title: Title.View, 1063 sub_title: SubTitle.View, 1064 home_header: Home.Header.View, 1065 user_header: User.Header.View, 1066 repo_header: Repo.Header.View, 1067 repo_sub_header: Repo.SubHeader.View, 1068 repo_files: Repo.Files.View, 1069 repo_commits: Repo.Commits.View, 1070 repo_refs: Repo.Refs.View, 1071 home_users: Home.Users.View, 1072 home_repos: Home.Repos.View, 1073 auth_tab: Home.Header.AuthTab.View, 1074 home_settings: Home.Settings.View, 1075 home_auth: Home.Auth.View, 1076 footer: Footer, 1077 1078 pub fn deinit(self: *Widget, allocator: std.mem.Allocator) void { 1079 switch (self.*) { 1080 inline else => |*case| case.deinit(allocator), 1081 } 1082 } 1083 1084 pub fn build(self: *Widget, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) anyerror!void { 1085 switch (self.*) { 1086 inline else => |*case| try case.build(allocator, constraint, root_focus), 1087 } 1088 } 1089 1090 pub fn input(self: *Widget, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) anyerror!void { 1091 switch (self.*) { 1092 inline else => |*case| try case.input(allocator, key, root_focus), 1093 } 1094 } 1095 1096 pub fn clearGrid(self: *Widget) void { 1097 switch (self.*) { 1098 inline else => |*case| case.clearGrid(), 1099 } 1100 } 1101 1102 pub fn getGrid(self: Widget) ?Grid { 1103 switch (self) { 1104 inline else => |*case| return case.getGrid(), 1105 } 1106 } 1107 1108 pub fn getFocus(self: *Widget) *Focus { 1109 switch (self.*) { 1110 inline else => |*case| return case.getFocus(), 1111 } 1112 } 1113 }; 1114 1115 pub const FlowBox = struct { 1116 focus: *Focus, 1117 grid: ?Grid, 1118 text_boxes: std.ArrayList(wgt.TextBox(Widget)), 1119 // backs the per-item strings the text boxes borrow: each box's `content` 1120 // and, for link items, its `.custom` focus kind (e.g. "a:/user/foo"). reset 1121 // wholesale on each setItems so there's no per-string ownership to track. 1122 arena: std.heap.ArenaAllocator, 1123 // column count from the last build — FlowBox.Scroll.input uses it so arrow 1124 // up/down can step by a row's worth of items. 1125 last_cols: usize, 1126 options: Options, 1127 1128 const border_rows: usize = 2; 1129 1130 pub const Options = struct { 1131 cell_width: usize = 40, 1132 cell_height: usize = 3, 1133 }; 1134 1135 pub fn init(allocator: std.mem.Allocator, options: Options) !FlowBox { 1136 return .{ 1137 .focus = try Focus.create(allocator, .container), 1138 .grid = null, 1139 .text_boxes = .empty, 1140 .arena = std.heap.ArenaAllocator.init(allocator), 1141 .last_cols = 1, 1142 .options = options, 1143 }; 1144 } 1145 1146 pub fn deinit(self: *FlowBox, allocator: std.mem.Allocator) void { 1147 self.focus.destroy(allocator); 1148 if (self.grid) |*grid| { 1149 grid.deinit(); 1150 self.grid = null; 1151 } 1152 for (self.text_boxes.items) |*tb| tb.deinit(allocator); 1153 self.text_boxes.deinit(allocator); 1154 self.arena.deinit(); 1155 } 1156 1157 // one flow item: its display text plus an optional link. a non-empty `link` 1158 // sets the item's focus kind such as `.{ .custom = "a:/user/foo" }`, which 1159 // the web renderer turns into an anchor. 1160 pub const Item = struct { text: []const u8, link: []const u8 = "" }; 1161 1162 // both the item text and the link are copied into the arena, so the caller's 1163 // slices needn't outlive this call. 1164 pub fn setItems(self: *FlowBox, allocator: std.mem.Allocator, items: []const Item) !void { 1165 for (self.text_boxes.items) |*tb| tb.deinit(allocator); 1166 self.text_boxes.clearAndFree(allocator); 1167 1168 // the old text boxes (and their borrowed content/links) are gone now, so 1169 // the arena that backed those strings can be reclaimed. 1170 _ = self.arena.reset(.retain_capacity); 1171 const aa = self.arena.allocator(); 1172 1173 self.focus.clear(); 1174 self.focus.child_id = null; 1175 1176 for (items) |item| { 1177 const line = try aa.dupe(u8, item.text); 1178 1179 var text_box = try wgt.TextBox(Widget).init(allocator, line, .{ .border_style = .hidden, .rounded_corners = true, .wrap_kind = .word }); 1180 errdefer text_box.deinit(allocator); 1181 text_box.getFocus().focusable = true; 1182 1183 if (item.link.len > 0) { 1184 text_box.getFocus().kind = .{ .custom = try aa.dupe(u8, item.link) }; 1185 } 1186 1187 try self.text_boxes.append(allocator, text_box); 1188 } 1189 1190 if (self.text_boxes.items.len > 0) { 1191 self.focus.child_id = self.text_boxes.items[0].getFocus().id; 1192 } 1193 } 1194 1195 pub fn build(self: *FlowBox, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1196 self.clearGrid(); 1197 self.focus.clear(); 1198 1199 const cell_width = self.options.cell_width; 1200 const max_width = constraint.max_size.width orelse cell_width; 1201 const cols = if (cell_width == 0) 1 else @max(1, max_width / cell_width); 1202 self.last_cols = cols; 1203 1204 const count = self.text_boxes.items.len; 1205 if (count == 0) return; 1206 const slot_height = self.options.cell_height + border_rows; 1207 if (slot_height == 0) return; 1208 1209 // build at the slot size so every text box fits a single grid cell 1210 for (self.text_boxes.items) |*tb| { 1211 tb.options.border_style = if (self.focus.child_id == tb.getFocus().id) .single else .hidden; 1212 try tb.build(allocator, .{ 1213 .min_size = .{ .width = cell_width, .height = null }, 1214 .max_size = .{ .width = cell_width, .height = slot_height }, 1215 }, root_focus); 1216 } 1217 1218 const rows = (count + cols - 1) / cols; 1219 const content_height = rows * slot_height; 1220 const total_width = cols * cell_width; 1221 if (total_width == 0 or content_height == 0) return; 1222 1223 var grid = try Grid.init(allocator, .{ .width = total_width, .height = content_height }); 1224 errdefer grid.deinit(); 1225 1226 for (self.text_boxes.items, 0..) |*tb, i| { 1227 const tb_grid = tb.getGrid() orelse continue; 1228 const col = i % cols; 1229 const row = i / cols; 1230 const cell_x = col * cell_width; 1231 const cell_y = row * slot_height; 1232 try self.focus.addChild(allocator, tb.getFocus(), tb_grid.size, cell_x, cell_y); 1233 try grid.drawGrid(tb_grid, cell_x, cell_y); 1234 } 1235 1236 self.grid = grid; 1237 } 1238 1239 pub fn input(self: *FlowBox, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1240 _ = self; 1241 _ = allocator; 1242 _ = key; 1243 _ = root_focus; 1244 } 1245 1246 pub fn clearGrid(self: *FlowBox) void { 1247 if (self.grid) |*grid| { 1248 grid.deinit(); 1249 self.grid = null; 1250 } 1251 for (self.text_boxes.items) |*tb| tb.clearGrid(); 1252 } 1253 1254 pub fn getGrid(self: FlowBox) ?Grid { 1255 return self.grid; 1256 } 1257 1258 pub fn getFocus(self: *FlowBox) *Focus { 1259 return self.focus; 1260 } 1261 1262 pub fn cellRect(self: FlowBox, index: usize) ?layout.IRect { 1263 if (self.last_cols == 0 or index >= self.text_boxes.items.len) return null; 1264 const slot_height = self.options.cell_height + border_rows; 1265 const col = index % self.last_cols; 1266 const row = index / self.last_cols; 1267 return .{ 1268 .x = @intCast(col * self.options.cell_width), 1269 .y = @intCast(row * slot_height), 1270 .size = .{ .width = self.options.cell_width, .height = slot_height }, 1271 }; 1272 } 1273 1274 pub fn indexOfFocusId(self: FlowBox, focus_id: usize) ?usize { 1275 for (self.text_boxes.items, 0..) |tb, i| { 1276 if (tb.box.focus.id == focus_id) return i; 1277 } 1278 return null; 1279 } 1280 1281 pub const Scroll = struct { 1282 scroll: wgt.Scroll(Widget), 1283 1284 pub fn init(allocator: std.mem.Allocator, options: FlowBox.Options, web_native: bool) !Scroll { 1285 var layout_inner = try FlowBox.init(allocator, options); 1286 errdefer layout_inner.deinit(allocator); 1287 var scroll = try wgt.Scroll(Widget).init(allocator, .{ .flow_box = layout_inner }, .{ .direction = .vert, .web_native = web_native }); 1288 errdefer scroll.deinit(allocator); 1289 return .{ .scroll = scroll }; 1290 } 1291 1292 pub fn deinit(self: *Scroll, allocator: std.mem.Allocator) void { 1293 self.scroll.deinit(allocator); 1294 } 1295 1296 pub fn setItems(self: *Scroll, allocator: std.mem.Allocator, items: []const Item) !void { 1297 self.scroll.x = 0; 1298 self.scroll.y = 0; 1299 try self.inner().setItems(allocator, items); 1300 } 1301 1302 pub fn build(self: *Scroll, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1303 try self.scroll.build(allocator, constraint, root_focus); 1304 } 1305 1306 pub fn input(self: *Scroll, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1307 _ = allocator; 1308 const in = self.inner(); 1309 const child_id = in.focus.child_id orelse return; 1310 const current_index = in.indexOfFocusId(child_id) orelse return; 1311 const count = in.text_boxes.items.len; 1312 if (count == 0) return; 1313 const cols = in.last_cols; 1314 const slot_height = in.options.cell_height + FlowBox.border_rows; 1315 1316 var index = current_index; 1317 switch (key) { 1318 .arrow_up => index -|= cols, 1319 .arrow_down => if (index + cols < count) { 1320 index += cols; 1321 }, 1322 .arrow_left => index -|= 1, 1323 .arrow_right => if (index + 1 < count) { 1324 index += 1; 1325 }, 1326 .home => index = 0, 1327 .end => index = count - 1, 1328 .page_up => { 1329 if (self.scroll.grid) |grid| if (slot_height > 0) { 1330 const rows_per_page = grid.size.height / slot_height; 1331 index -|= rows_per_page * cols; 1332 }; 1333 }, 1334 .page_down => { 1335 if (self.scroll.grid) |grid| if (slot_height > 0) { 1336 const rows_per_page = grid.size.height / slot_height; 1337 index = @min(index + rows_per_page * cols, count - 1); 1338 }; 1339 }, 1340 // scroll wheel moves the focused cell by a full row so the 1341 // viewport (via scrollToRect) follows in row-sized steps, 1342 // matching how a scroll wheel feels in a grid view. 1343 .mouse => |mouse| switch (mouse.action) { 1344 .scroll => |dir| switch (dir) { 1345 .up => index -|= cols, 1346 .down => if (index + cols < count) { 1347 index += cols; 1348 }, 1349 }, 1350 else => {}, 1351 }, 1352 else => {}, 1353 } 1354 1355 if (index != current_index) { 1356 root_focus.setFocus(in.text_boxes.items[index].getFocus().id); 1357 if (in.cellRect(index)) |rect| { 1358 self.scroll.scrollToRect(rect); 1359 } 1360 } 1361 } 1362 1363 pub fn clearGrid(self: *Scroll) void { 1364 self.scroll.clearGrid(); 1365 } 1366 1367 pub fn getGrid(self: Scroll) ?Grid { 1368 return self.scroll.getGrid(); 1369 } 1370 1371 pub fn getFocus(self: *Scroll) *Focus { 1372 return self.scroll.getFocus(); 1373 } 1374 1375 pub fn getSelectedIndex(self: Scroll) ?usize { 1376 const in = self.scroll.child.flow_box; 1377 const child_id = in.focus.child_id orelse return null; 1378 return in.indexOfFocusId(child_id); 1379 } 1380 1381 fn inner(self: *Scroll) *FlowBox { 1382 return &self.scroll.child.flow_box; 1383 } 1384 }; 1385 }; 1386 1387 // an invisible widget that fills the horizontal space granted by its parent. 1388 // used inside Box(horiz) with a min_size so the box reserves space for the 1389 // children that follow, pushing them to the right. 1390 pub const Spacer = struct { 1391 focus: *Focus, 1392 grid: ?Grid, 1393 1394 pub fn init(allocator: std.mem.Allocator) !Spacer { 1395 return .{ 1396 .focus = try Focus.create(allocator, .container), 1397 .grid = null, 1398 }; 1399 } 1400 1401 pub fn deinit(self: *Spacer, allocator: std.mem.Allocator) void { 1402 self.focus.destroy(allocator); 1403 if (self.grid) |*grid| { 1404 grid.deinit(); 1405 self.grid = null; 1406 } 1407 } 1408 1409 pub fn build(self: *Spacer, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1410 _ = root_focus; 1411 self.clearGrid(); 1412 const width = constraint.max_size.width orelse return; 1413 if (width == 0) return; 1414 self.grid = try Grid.init(allocator, .{ .width = width, .height = 1 }); 1415 } 1416 1417 pub fn input(self: *Spacer, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1418 _ = self; 1419 _ = allocator; 1420 _ = key; 1421 _ = root_focus; 1422 } 1423 1424 pub fn clearGrid(self: *Spacer) void { 1425 if (self.grid) |*grid| { 1426 grid.deinit(); 1427 self.grid = null; 1428 } 1429 } 1430 1431 pub fn getGrid(self: Spacer) ?Grid { 1432 return self.grid; 1433 } 1434 1435 pub fn getFocus(self: *Spacer) *Focus { 1436 return self.focus; 1437 } 1438 }; 1439 1440 // a one-row, non-focusable status bar showing the current page's url 1441 pub const Footer = struct { 1442 focus: *Focus, 1443 grid: ?Grid, 1444 session: *Session, 1445 arena: std.heap.ArenaAllocator, 1446 1447 pub fn init(allocator: std.mem.Allocator, session: *Session) !Footer { 1448 return .{ 1449 .focus = try Focus.create(allocator, .container), 1450 .grid = null, 1451 .session = session, 1452 .arena = std.heap.ArenaAllocator.init(allocator), 1453 }; 1454 } 1455 1456 pub fn deinit(self: *Footer, allocator: std.mem.Allocator) void { 1457 self.focus.destroy(allocator); 1458 if (self.grid) |*grid| grid.deinit(); 1459 self.arena.deinit(); 1460 } 1461 1462 pub fn build(self: *Footer, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1463 _ = root_focus; 1464 self.clearGrid(); 1465 const width = constraint.max_size.width orelse return; 1466 if (width == 0) return; 1467 1468 _ = self.arena.reset(.retain_capacity); 1469 const aa = self.arena.allocator(); 1470 const path = self.session.data.current_page.urlAlloc(&self.arena) catch return; 1471 const text = if (self.session.web_port) |port| 1472 std.fmt.allocPrint(aa, "http://localhost:{d}{s}", .{ port, path }) catch return 1473 else 1474 path; 1475 1476 var grid = try Grid.init(allocator, .{ .width = width, .height = 1 }); 1477 errdefer grid.deinit(); 1478 var utf8 = (std.unicode.Utf8View.init(text) catch return).iterator(); 1479 var i: usize = 0; 1480 while (utf8.nextCodepointSlice()) |ch| { 1481 if (i == width) break; 1482 grid.cells.items[try grid.cells.at(.{ 0, i })].rune = ch; 1483 i += 1; 1484 } 1485 self.grid = grid; 1486 } 1487 1488 pub fn input(self: *Footer, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1489 _ = self; 1490 _ = allocator; 1491 _ = key; 1492 _ = root_focus; 1493 } 1494 1495 pub fn clearGrid(self: *Footer) void { 1496 if (self.grid) |*grid| { 1497 grid.deinit(); 1498 self.grid = null; 1499 } 1500 } 1501 1502 pub fn getGrid(self: Footer) ?Grid { 1503 return self.grid; 1504 } 1505 1506 pub fn getFocus(self: *Footer) *Focus { 1507 return self.focus; 1508 } 1509 }; 1510 1511 // a single-child wrapper that builds the child at its natural size and 1512 // positions its grid in the middle of the area granted by the parent 1513 pub const Center = struct { 1514 focus: *Focus, 1515 grid: ?Grid, 1516 child: *Widget, 1517 1518 pub fn init(allocator: std.mem.Allocator, child_widget: Widget) !Center { 1519 const child = try allocator.create(Widget); 1520 errdefer allocator.destroy(child); 1521 child.* = child_widget; 1522 return .{ 1523 .focus = try Focus.create(allocator, .container), 1524 .grid = null, 1525 .child = child, 1526 }; 1527 } 1528 1529 pub fn deinit(self: *Center, allocator: std.mem.Allocator) void { 1530 self.focus.destroy(allocator); 1531 if (self.grid) |*grid| { 1532 grid.deinit(); 1533 self.grid = null; 1534 } 1535 self.child.deinit(allocator); 1536 allocator.destroy(self.child); 1537 } 1538 1539 pub fn build(self: *Center, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1540 self.clearGrid(); 1541 self.getFocus().clear(); 1542 1543 // build the child without forcing it to fill min_size; it sizes 1544 // itself to its content within the available max. 1545 try self.child.build(allocator, .{ 1546 .min_size = .{ .width = null, .height = null }, 1547 .max_size = constraint.max_size, 1548 }, root_focus); 1549 1550 const child_grid = self.child.getGrid() orelse return; 1551 1552 // prefer max when given; otherwise grow to max(min, child) so that 1553 // when only a min is set (e.g. the wasm path passes viewport rows 1554 // as min_height with no max), we can still vertically center while 1555 // letting taller content extend past the min. 1556 const width = if (constraint.max_size.width) |w| w else if (constraint.min_size.width) |min_w| @max(min_w, child_grid.size.width) else child_grid.size.width; 1557 const height = if (constraint.max_size.height) |h| h else if (constraint.min_size.height) |min_h| @max(min_h, child_grid.size.height) else child_grid.size.height; 1558 if (width == 0 or height == 0) return; 1559 1560 const offset_x: usize = (width -| child_grid.size.width) / 2; 1561 const offset_y: usize = (height -| child_grid.size.height) / 2; 1562 1563 var grid = try Grid.init(allocator, .{ .width = width, .height = height }); 1564 errdefer grid.deinit(); 1565 try grid.drawGrid(child_grid, offset_x, offset_y); 1566 try self.getFocus().addChild(allocator, self.child.getFocus(), child_grid.size, offset_x, offset_y); 1567 self.getFocus().child_id = self.child.getFocus().id; 1568 1569 self.grid = grid; 1570 } 1571 1572 pub fn input(self: *Center, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1573 try self.child.input(allocator, key, root_focus); 1574 } 1575 1576 pub fn clearGrid(self: *Center) void { 1577 if (self.grid) |*grid| { 1578 grid.deinit(); 1579 self.grid = null; 1580 } 1581 self.child.clearGrid(); 1582 } 1583 1584 pub fn getGrid(self: Center) ?Grid { 1585 return self.grid; 1586 } 1587 1588 pub fn getFocus(self: *Center) *Focus { 1589 return self.focus; 1590 } 1591 }; 1592 1593 // renders truecolor ANSI art 1594 pub const AnsiArt = struct { 1595 focus: *Focus, 1596 grid: ?Grid, 1597 content: []const u8, 1598 1599 pub fn init(allocator: std.mem.Allocator, content: []const u8) !AnsiArt { 1600 return .{ 1601 .focus = try Focus.create(allocator, .container), 1602 .grid = null, 1603 .content = content, 1604 }; 1605 } 1606 1607 pub fn deinit(self: *AnsiArt, allocator: std.mem.Allocator) void { 1608 self.focus.destroy(allocator); 1609 if (self.grid) |*grid| { 1610 grid.deinit(); 1611 self.grid = null; 1612 } 1613 } 1614 1615 pub fn build(self: *AnsiArt, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1616 _ = root_focus; 1617 self.clearGrid(); 1618 1619 // parse into rows of cells, then copy into a rectangular grid 1620 var rows: std.ArrayList(std.ArrayList(Grid.Cell)) = .empty; 1621 defer { 1622 for (rows.items) |*row| row.deinit(allocator); 1623 rows.deinit(allocator); 1624 } 1625 var row: std.ArrayList(Grid.Cell) = .empty; 1626 errdefer row.deinit(allocator); 1627 1628 var style: Grid.Style = .{}; 1629 var width: usize = 0; 1630 const content = self.content; 1631 var i: usize = 0; 1632 while (i < content.len) { 1633 const byte = content[i]; 1634 if (byte == '\n') { 1635 width = @max(width, row.items.len); 1636 try rows.append(allocator, row); 1637 row = .empty; 1638 i += 1; 1639 } else if (byte == 0x1B and i + 1 < content.len and content[i + 1] == '[') { 1640 // CSI: scan to the final byte (0x40..0x7E); apply it if it's 'm' 1641 var j = i + 2; 1642 while (j < content.len and !(content[j] >= 0x40 and content[j] <= 0x7E)) j += 1; 1643 if (j >= content.len) { 1644 i = content.len; // malformed trailing escape; stop 1645 } else { 1646 if (content[j] == 'm') applySgr(&style, content[i + 2 .. j]); 1647 i = j + 1; 1648 } 1649 } else { 1650 const len = std.unicode.utf8ByteSequenceLength(byte) catch 1; 1651 const end = @min(content.len, i + len); 1652 const rune = content[i..end]; 1653 const transparent = end - i == 1 and rune[0] == ' ' and 1654 style.fg == null and style.bg == null and !style.inverted; 1655 try row.append(allocator, .{ 1656 .rune = if (transparent) null else rune, 1657 .style = style, 1658 }); 1659 i = end; 1660 } 1661 } 1662 // a trailing row with content but no closing newline 1663 if (row.items.len > 0) { 1664 width = @max(width, row.items.len); 1665 try rows.append(allocator, row); 1666 } else { 1667 row.deinit(allocator); 1668 } 1669 row = .empty; // ownership moved into rows (or freed); keep errdefer safe 1670 1671 const height = rows.items.len; 1672 if (width == 0 or height == 0) return; 1673 1674 const clamped_w = @min(width, constraint.max_size.width orelse width); 1675 const clamped_h = @min(height, constraint.max_size.height orelse height); 1676 1677 var grid = try Grid.init(allocator, .{ .width = clamped_w, .height = clamped_h }); 1678 errdefer grid.deinit(); 1679 for (rows.items[0..clamped_h], 0..) |r, y| { 1680 const n = @min(r.items.len, clamped_w); 1681 for (r.items[0..n], 0..) |cell, x| { 1682 grid.cells.items[try grid.cells.at(.{ y, x })] = cell; 1683 } 1684 } 1685 self.grid = grid; 1686 } 1687 1688 pub fn clearGrid(self: *AnsiArt) void { 1689 if (self.grid) |*grid| { 1690 grid.deinit(); 1691 self.grid = null; 1692 } 1693 } 1694 1695 pub fn getGrid(self: AnsiArt) ?Grid { 1696 return self.grid; 1697 } 1698 1699 pub fn getFocus(self: *AnsiArt) *Focus { 1700 return self.focus; 1701 } 1702 1703 fn applySgr(style: *Grid.Style, params: []const u8) void { 1704 var nums: [16]u32 = undefined; 1705 var n: usize = 0; 1706 var it = std.mem.splitScalar(u8, params, ';'); 1707 while (it.next()) |tok| { 1708 if (n >= nums.len) break; 1709 // an empty parameter (e.g. bare "\x1b[m") means 0 1710 nums[n] = std.fmt.parseInt(u32, tok, 10) catch 0; 1711 n += 1; 1712 } 1713 if (n == 0) { 1714 style.* = .{}; 1715 return; 1716 } 1717 var i: usize = 0; 1718 while (i < n) : (i += 1) { 1719 switch (nums[i]) { 1720 0 => style.* = .{}, 1721 7 => style.inverted = true, 1722 27 => style.inverted = false, 1723 39 => style.fg = null, 1724 49 => style.bg = null, 1725 38, 48 => { 1726 // truecolor form: 38;2;r;g;b — anything else is ignored 1727 if (i + 4 < n and nums[i + 1] == 2) { 1728 const c = Grid.Color{ 1729 .r = @truncate(nums[i + 2]), 1730 .g = @truncate(nums[i + 3]), 1731 .b = @truncate(nums[i + 4]), 1732 }; 1733 if (nums[i] == 38) style.fg = c else style.bg = c; 1734 i += 4; 1735 } 1736 }, 1737 else => {}, 1738 } 1739 } 1740 } 1741 }; 1742 1743 // a full-screen wrapper that renders ANSI art behind whatever page it wraps 1744 pub const AnsiBackground = struct { 1745 grid: ?Grid, 1746 child: *Widget, 1747 art: AnsiArt, 1748 session: *Session, 1749 1750 pub fn init(allocator: std.mem.Allocator, child_widget: Widget, art_content: []const u8, session: *Session) !AnsiBackground { 1751 var cw = child_widget; 1752 const child = allocator.create(Widget) catch |e| { 1753 cw.deinit(allocator); 1754 return e; 1755 }; 1756 child.* = cw; 1757 errdefer { 1758 child.deinit(allocator); 1759 allocator.destroy(child); 1760 } 1761 return .{ .grid = null, .child = child, .art = try AnsiArt.init(allocator, art_content), .session = session }; 1762 } 1763 1764 pub fn deinit(self: *AnsiBackground, allocator: std.mem.Allocator) void { 1765 if (self.grid) |*grid| grid.deinit(); 1766 self.art.deinit(allocator); 1767 self.child.deinit(allocator); 1768 allocator.destroy(self.child); 1769 } 1770 1771 pub fn build(self: *AnsiBackground, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 1772 self.clearGrid(); 1773 1774 // make the wrapped page fill the whole available area 1775 try self.child.build(allocator, .{ 1776 .min_size = .{ 1777 .width = constraint.max_size.width orelse constraint.min_size.width, 1778 .height = constraint.max_size.height orelse constraint.min_size.height, 1779 }, 1780 .max_size = constraint.max_size, 1781 }, root_focus); 1782 1783 if (self.session.data.enable_ansi) { 1784 if (self.child.getGrid()) |fg| { 1785 self.grid = try artBehind(allocator, fg, &self.art, .top_right, root_focus); 1786 } 1787 } 1788 } 1789 1790 pub fn input(self: *AnsiBackground, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 1791 try self.child.input(allocator, key, root_focus); 1792 } 1793 1794 pub fn clearGrid(self: *AnsiBackground) void { 1795 if (self.grid) |*grid| { 1796 grid.deinit(); 1797 self.grid = null; 1798 } 1799 self.child.clearGrid(); 1800 self.art.clearGrid(); 1801 } 1802 1803 pub fn getGrid(self: AnsiBackground) ?Grid { 1804 return self.grid orelse self.child.getGrid(); 1805 } 1806 1807 pub fn getFocus(self: *AnsiBackground) *Focus { 1808 return self.child.getFocus(); 1809 } 1810 1811 // which top corner the art hugs. 1812 const ArtAnchor = enum { top_left, top_right }; 1813 1814 // a foreground cell counts as blank if it's empty or a bare space without styling 1815 fn cellIsBlank(cell: Grid.Cell) bool { 1816 if (cell.rune) |rune| { 1817 return std.mem.eql(u8, rune, " ") and 1818 cell.style.fg == null and cell.style.bg == null and !cell.style.inverted; 1819 } 1820 return true; 1821 } 1822 1823 // the art is dimmed to this fraction of its brightness so foreground text 1824 // stays legible over it 1825 const art_brightness = 45; // percent 1826 1827 fn dimColor(color: ?Grid.Color) ?Grid.Color { 1828 const c = color orelse return null; 1829 return .{ 1830 .r = @intCast(@as(u16, c.r) * art_brightness / 100), 1831 .g = @intCast(@as(u16, c.g) * art_brightness / 100), 1832 .b = @intCast(@as(u16, c.b) * art_brightness / 100), 1833 }; 1834 } 1835 1836 // terminals that don't support truecolor misparse a "38;2;r;g;b"/"48;2;…" 1837 // SGR as a list of plain SGR codes, so any channel value in 1..9 turns on 1838 // a text attribute (5/6 = blink, 7 = inverse, 8 = conceal, …). 1839 // snap such channels clear of that range so the backdrop doesn't blink or 1840 // hide text there; the ≤9/255 shift is imperceptible on terminals that 1841 // actually render truecolor. 1842 fn sgrSafe(color: ?Grid.Color) ?Grid.Color { 1843 const c = color orelse return null; 1844 const snap = struct { 1845 fn f(v: u8) u8 { 1846 return if (v >= 1 and v <= 9) 10 else v; 1847 } 1848 }.f; 1849 return .{ .r = snap(c.r), .g = snap(c.g), .b = snap(c.b) }; 1850 } 1851 1852 // composites ANSI art behind a foreground grid 1853 fn artBehind(allocator: std.mem.Allocator, foreground: Grid, art: *AnsiArt, anchor: ArtAnchor, root_focus: *Focus) !Grid { 1854 art.clearGrid(); 1855 try art.build(allocator, .{ 1856 .min_size = .{ .width = null, .height = null }, 1857 .max_size = .{ .width = foreground.size.width, .height = foreground.size.height }, 1858 }, root_focus); 1859 1860 var out = try Grid.initFromGrid(allocator, foreground, foreground.size, 0, 0); 1861 errdefer out.deinit(); 1862 1863 if (art.getGrid()) |art_grid| { 1864 const anchor_x = switch (anchor) { 1865 .top_left => 0, 1866 .top_right => foreground.size.width -| art_grid.size.width, 1867 }; 1868 for (0..art_grid.size.height) |y| { 1869 for (0..art_grid.size.width) |x| { 1870 const src = art_grid.cells.items[try art_grid.cells.at(.{ y, x })]; 1871 if (src.rune == null) continue; 1872 const idx = out.cells.at(.{ y, anchor_x + x }) catch continue; 1873 const dst = &out.cells.items[idx]; 1874 // composite the dimmed art behind every cell so it shows 1875 // through the whole UI: a blank cell becomes the art, while a 1876 // cell with a glyph keeps the glyph but takes the dimmed art as 1877 // its background (replacing whatever background it had, which 1878 // would otherwise obscure the art). 1879 if (cellIsBlank(dst.*)) { 1880 dst.* = src; 1881 dst.style.fg = sgrSafe(dimColor(dst.style.fg)); 1882 dst.style.bg = sgrSafe(dimColor(dst.style.bg)); 1883 } else { 1884 dst.style.bg = sgrSafe(dimColor(src.style.bg orelse src.style.fg)); 1885 } 1886 } 1887 } 1888 } 1889 return out; 1890 } 1891 }; 1892