From df0519bea5390ac8f3d9a0e168e2f799bd068985 Mon Sep 17 00:00:00 2001
From: YongDo-Hyun <froster12@naver.com>
Date: Sat, 27 Dec 2025 01:06:26 +0300
Subject: feat: enhance error handling in ozlibstream and improve JSON escaping
 in json_formatter; add make_numeric_tag for cleaner tag creation

Signed-off-by: YongDo-Hyun <froster12@naver.com>
---
 src/io/ozlibstream.cpp      |  2 +-
 src/text/json_formatter.cpp |  2 +-
 src/value.cpp               | 41 +++++++++++++++++++++--------------------
 3 files changed, 23 insertions(+), 22 deletions(-)

(limited to 'src')

diff --git a/src/io/ozlibstream.cpp b/src/io/ozlibstream.cpp
index b936219787..5f479f83f8 100644
--- a/src/io/ozlibstream.cpp
+++ b/src/io/ozlibstream.cpp
@@ -95,6 +95,7 @@ int deflate_streambuf::sync()
 
 void ozlibstream::close()
 {
+    std::ios_base::iostate old_ex = exceptions();
     try
     {
         buf.close();
@@ -105,7 +106,6 @@ void ozlibstream::close()
         // `setstate` to throw an `ios_base::failure` which would replace
         // the original exception. Temporarily disable exceptions on this
         // stream, set the `badbit`, then restore the exception mask.
-        std::ios_base::iostate old_ex = exceptions();
         try {
             exceptions(std::ios_base::goodbit);
             setstate(std::ios_base::badbit);
diff --git a/src/text/json_formatter.cpp b/src/text/json_formatter.cpp
index bd882c15d2..06a9c54f60 100644
--- a/src/text/json_formatter.cpp
+++ b/src/text/json_formatter.cpp
@@ -217,7 +217,7 @@ namespace //anonymous
                     default:
                         if (static_cast<unsigned char>(c) < 32 || c == 127) {
                             // Control characters, escape as \u00XX
-                            os << "\\u00" << std::hex << std::setw(2) << std::setfill('0') << static_cast<int>(static_cast<unsigned char>(c));
+                            os << "\\u00" << std::hex << std::setw(2) << std::setfill('0') << static_cast<int>(c);
                         } else {
                             os << c;
                         }
diff --git a/src/value.cpp b/src/value.cpp
index 8c16da6e23..273049baf9 100644
--- a/src/value.cpp
+++ b/src/value.cpp
@@ -66,6 +66,21 @@ void value::set(tag&& t)
 //Primitive assignment
 namespace // helper functions local to this translation unit
 {
+    template<typename T>
+    std::unique_ptr<tag> make_numeric_tag(tag_type type, T val)
+    {
+        switch(type)
+        {
+        case tag_type::Byte: return std::unique_ptr<tag>(new tag_byte(val));
+        case tag_type::Short: return std::unique_ptr<tag>(new tag_short(val));
+        case tag_type::Int: return std::unique_ptr<tag>(new tag_int(val));
+        case tag_type::Long: return std::unique_ptr<tag>(new tag_long(val));
+        case tag_type::Float: return std::unique_ptr<tag>(new tag_float(val));
+        case tag_type::Double: return std::unique_ptr<tag>(new tag_double(val));
+        default: return nullptr;
+        }
+    }
+
     template<typename T>
     void assign_numeric_impl(std::unique_ptr<tag>& tag_ptr, T val,
                              tag_type default_type)
@@ -73,16 +88,9 @@ namespace // helper functions local to this translation unit
         using nbt::tag_type;
         if(!tag_ptr)
         {
-            switch(default_type)
-            {
-            case tag_type::Byte: tag_ptr.reset(new tag_byte(static_cast<int8_t>(val))); break;
-            case tag_type::Short: tag_ptr.reset(new tag_short(static_cast<int16_t>(val))); break;
-            case tag_type::Int: tag_ptr.reset(new tag_int(static_cast<int32_t>(val))); break;
-            case tag_type::Long: tag_ptr.reset(new tag_long(static_cast<int64_t>(val))); break;
-            case tag_type::Float: tag_ptr.reset(new tag_float(static_cast<float>(val))); break;
-            case tag_type::Double: tag_ptr.reset(new tag_double(static_cast<double>(val))); break;
-            default: throw std::invalid_argument("Invalid default_type");
-            }
+            tag_ptr = make_numeric_tag(default_type, val);
+            if(!tag_ptr)
+                throw std::invalid_argument("Invalid default_type");
             return;
         }
 
@@ -97,16 +105,9 @@ namespace // helper functions local to this translation unit
         if(static_cast<int>(existing_type) < static_cast<int>(incoming_type))
         {
             // replace with a new, wider tag that preserves the value
-            switch(incoming_type)
-            {
-            case tag_type::Byte: tag_ptr.reset(new tag_byte(static_cast<int8_t>(val))); break;
-            case tag_type::Short: tag_ptr.reset(new tag_short(static_cast<int16_t>(val))); break;
-            case tag_type::Int: tag_ptr.reset(new tag_int(static_cast<int32_t>(val))); break;
-            case tag_type::Long: tag_ptr.reset(new tag_long(static_cast<int64_t>(val))); break;
-            case tag_type::Float: tag_ptr.reset(new tag_float(static_cast<float>(val))); break;
-            case tag_type::Double: tag_ptr.reset(new tag_double(static_cast<double>(val))); break;
-            default: throw std::bad_cast();
-            }
+            tag_ptr = make_numeric_tag(incoming_type, val);
+            if(!tag_ptr)
+                throw std::bad_cast();
             return;
         }
 
-- 
cgit 0.0.5-2-1-g0f52