stack_cstr

stack_cstr is a high-performance Rust library for creating C-style strings (CStr/CString) efficiently.
It tries to write the formatted string into a stack buffer first, and if the string is too long, it falls back to heap allocation.
The final result is a safe C string that can be passed to FFI functions.

Features

• Stack buffer attempt with configurable sizes
• Automatic heap fallback for long strings
• Supports format_args! style formatting
• Returns Box<dyn CStrLike> for easy FFI usage
• Simple macro interface: cstr!()
• Extensible stack sizes