kstd/format: enable formatting of bool values

1 files changed, 24 insertions, 1 deletions

diff --git a/libs/kstd/include/kstd/bits/formatter.hpp b/libs/kstd/include/kstd/bits/formatter.hpp
index eadc0ef..a467edd 100644
--- a/libs/kstd/include/kstd/bits/formatter.hpp
+++ b/libs/kstd/include/kstd/bits/formatter.hpp
@@ -95,7 +95,7 @@ namespace kstd
 
       auto prefix = std::array<char, 2>{'0', '\0'};
       auto prefix_length = 0uz;
-      if (specs.alternative_form && value != 0)
+      if (specs.alternative_form)
       {
         switch (base)
         {
@@ -259,6 +259,29 @@ namespace kstd
   {
   };
 
+  template<>
+  struct formatter<bool>
+  {
+    bits::format_specs specs{};
+
+    constexpr auto parse(std::string_view context) -> std::string_view
+    {
+      return bits::parse_specs(context, specs);
+    }
+
+    auto format(bool value, format_context & context) const -> void
+    {
+      if (specs.type == 's' || specs.type == '\0')
+      {
+        context.push(value ? "true" : "false");
+      }
+      else
+      {
+        formatter<int>{specs}.format(static_cast<int>(value), context);
+      }
+    }
+  };
+
   struct format_arg
   {
     using formatting_function = std::string_view(void const *, std::string_view, format_context &);