Function snprintf

src/fl/stl/stdio.h:666–694

/// @endcode
template<typename... Args>
int snprintf(char* buffer, fl::size size, const char* format, const Args&... args) FL_NOEXCEPT {
    // Handle null buffer or zero size
    if (!buffer || size == 0) {
        return 0;
    }
    
    // Format to internal string stream
    sstream stream;
    printf_detail::format_impl(stream, format, args...);
    fl::string result = stream.str();
    
    // Get the formatted string length
    fl::size formatted_len = result.size();
    
    // Copy to buffer, ensuring null termination
    fl::size copy_len = (formatted_len < size - 1) ? formatted_len : size - 1;
    
    // Copy characters
    for (fl::size i = 0; i < copy_len; ++i) {
        buffer[i] = result[i];
    }
    
    // Null terminate
    buffer[copy_len] = '\0';
    
    // Return the number of characters actually written (excluding null terminator)
    // This respects the buffer size limit instead of returning the full formatted length
    return static_cast<int>(copy_len);
}

/// @brief Sprintf-like formatting function that writes to a buffer
/// @param buffer Output buffer to write formatted string to