1 files changed, 63 insertions, 0 deletions
diff --git a/source/kit/string_builder.h b/source/kit/string_builder.h
new file mode 100644
index 0000000..322f6e2
--- /dev/null
+++ b/source/kit/string_builder.h
@@ -0,0 +1,63 @@
+#ifndef KIT_STRING_BUILDER_H
+#define KIT_STRING_BUILDER_H
+
+#include "status.h"
+#include "string_ref.h"
+#include "dynamic_array.h"
+
+#include <assert.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef KIT_DA(char) kit_str_builder_t;
+
+#ifdef __GNUC__
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Wunused-function"
+#  pragma GCC diagnostic ignored "-Wunknown-pragmas"
+#  pragma GCC            push_options
+#  pragma GCC            optimize("O3")
+#endif
+
+static kit_str_builder_t kit_str_build(kit_str_t        s,
+                                       kit_allocator_t *alloc) {
+  kit_str_builder_t builder;
+  KIT_DA_INIT(builder, s.size, alloc);
+  assert(builder.size == s.size);
+  if (builder.size == s.size)
+    memcpy(builder.values, s.values, s.size);
+  return builder;
+}
+
+static kit_status_t kit_str_append(kit_str_builder_t *a,
+                                   kit_str_t          b) {
+  assert(a != NULL);
+  if (a == NULL)
+    return KIT_ERROR_INVALID_ARGUMENT;
+  if (b.size <= 0)
+    return KIT_OK;
+  i64 n = a->size;
+  KIT_DA_RESIZE(*a, n + b.size);
+  if (a->size != n + b.size)
+    return KIT_ERROR_BAD_ALLOC;
+  memcpy(a->values + n, b.values, b.size);
+  return KIT_OK;
+}
+
+#ifdef __GNUC__
+#  pragma GCC            pop_options
+#  pragma GCC diagnostic pop
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#ifndef KIT_DISABLE_SHORT_NAMES
+#  define str_builder_t kit_str_builder_t
+#  define str_append kit_str_append
+#endif
+
+#endif