From 1ac94c8aff47b549f30b370be2191bcc0157826c Mon Sep 17 00:00:00 2001
From: Dominick Allen <djallen@librehumanitas.org>
Date: Thu, 2 Jan 2025 21:57:57 -0600
Subject: More bugs in format...

---
 include/fud_format.hpp | 38 +++++++++++++++++++++++++++-----------
 1 file changed, 27 insertions(+), 11 deletions(-)

(limited to 'include/fud_format.hpp')

diff --git a/include/fud_format.hpp b/include/fud_format.hpp
index 8dd2231..e80d96e 100644
--- a/include/fud_format.hpp
+++ b/include/fud_format.hpp
@@ -172,6 +172,8 @@ enum class FormatType : utf8
     FixedUpper = 'F',
     GeneralLower = 'g',
     GeneralUpper = 'G',
+    PointerLower = 'p',
+    PointerUpper = 'P',
 };
 
 struct FormatSpec;
@@ -337,7 +339,6 @@ size_t findSpec(StringView scanView);
 template <typename Sink, typename... Args> requires Drainable<Sink, StringView>
 FormatResult format(Sink& sink, FormatCharMode formatMode, FormatString fmt, Args&&... args)
 {
-    static_cast<void>(sink);
     if (formatMode != FormatCharMode::Unchecked) {
         return {0, FudStatus::NotImplemented};
     }
@@ -416,6 +417,9 @@ FormatResult vFormat(Sink& sink, FormatCharMode formatMode, FormatString fmt, co
             result.status = drainResult.status;
             return result;
         }
+        if (specIndex == scanView.length()) {
+            return result;
+        }
         scanView.advanceUnsafe(specIndex);
         if (specIndex == scanView.length()) {
             return result;
@@ -698,6 +702,8 @@ template <typename T>
     case FormatType::FixedUpper:
     case FormatType::GeneralLower:
     case FormatType::GeneralUpper:
+    case FormatType::PointerLower:
+    case FormatType::PointerUpper:
         result.status = FudStatus::FormatInvalid;
         break;
     default:
@@ -1270,8 +1276,6 @@ template <typename Sink, typename T>
     static_assert(std::is_same_v<decltype(decimalRepr.exponent), int32_t>);
     static_assert(std::is_same_v<decltype(decimalRepr.is_negative), bool>);
 
-    static_cast<void>(decimalRepr);
-
     auto uppercaseResult = validateFloatFormatType(formatSpec.formatType);
     if (uppercaseResult.isError()) {
         return FormatResult{0, uppercaseResult.takeError()};
@@ -1468,23 +1472,35 @@ FormatResult format(Sink& sink, FormatCharMode formatMode, const FormatSpec& for
 template <typename Sink>
 FormatResult format(Sink& sink, FormatCharMode formatMode, const FormatSpec& formatSpec, const void* arg)
 {
-    FormatResult result{0, FudStatus::NotImplemented};
-    static_cast<void>(sink);
-    static_cast<void>(formatMode);
-    static_cast<void>(formatSpec);
-    static_cast<void>(arg);
-    return result;
+    auto pointerFormatSpec = formatSpec;
+    if (pointerFormatSpec.formatType == FormatType::Unspecified || 
+        pointerFormatSpec.formatType == FormatType::PointerLower) {
+        pointerFormatSpec.formatType = FormatType::HexLower;
+    } else if (pointerFormatSpec.formatType == FormatType::PointerUpper) {
+        pointerFormatSpec.formatType = FormatType::HexUpper;
+    } else {
+        return DrainResult{0, FudStatus::FormatInvalid};
+    }
+    pointerFormatSpec.formatType = FormatType::HexLower;
+    if (pointerFormatSpec.alternateForm || pointerFormatSpec.hasLocale ||
+        pointerFormatSpec.formatSign != FormatSign::Default) {
+        return DrainResult{0, FudStatus::FormatInvalid};
+    }
+    pointerFormatSpec.alternateForm = true;
+    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast)
+    return impl::formatIntegral(sink, formatMode, pointerFormatSpec, reinterpret_cast<uintptr_t>(arg));
 }
 
 template <typename Sink>
 FormatResult format(Sink& sink, FormatCharMode formatMode, const FormatSpec& formatSpec, impl::FormatHandle arg)
 {
-    FormatResult result{0, FudStatus::NotImplemented};
+    // FormatResult result{0, FudStatus::NotImplemented};
     static_cast<void>(sink);
     static_cast<void>(formatMode);
     static_cast<void>(formatSpec);
     static_cast<void>(arg);
-    return result;
+
+    return format(sink, formatMode, formatSpec, "not implemented");
 }
 
 } // namespace fud
-- 
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