1 files changed, 22 insertions, 2 deletions
diff --git a/libs/kstd/kstd/bits/format/vformat.cpp b/libs/kstd/kstd/bits/format/vformat.cpp
index 1bf293a4..7210a0b6 100644
--- a/libs/kstd/kstd/bits/format/vformat.cpp
+++ b/libs/kstd/kstd/bits/format/vformat.cpp
@@ -1,6 +1,7 @@
-#include <kstd/format>
-#include <kstd/string>
+#include <kstd/format.hpp>
+#include <kstd/string.hpp>
 
+#include <algorithm>
 #include <cstddef>
 #include <iterator>
 #include <string_view>
@@ -221,4 +222,23 @@ namespace kstd::bits::format
     return m_size;
   }
 
+  auto span_writer::push(std::string_view text) -> void
+  {
+    if (m_position < m_span.size() - 1)
+    {
+      auto space_left = m_span.size() - m_position;
+      auto to_copy = std::min(space_left, text.size());
+      std::ranges::copy_n(text.begin(), to_copy, m_span.subspan(m_position).begin());
+      m_position += to_copy;
+    }
+  }
+
+  auto span_writer::push(char character) -> void
+  {
+    if (m_position < m_span.size() - 1)
+    {
+      m_span[m_position++] = character;
+    }
+  }
+
 }  // namespace kstd::bits::format
 \ No newline at end of file