1 files changed, 31 insertions, 0 deletions
diff --git a/shared/scratchbuf.h b/shared/scratchbuf.h
new file mode 100644
index 0000000..27ea9d9
--- /dev/null
+++ b/shared/scratchbuf.h
@@ -0,0 +1,31 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include <shared/macro.h>
+
+/*
+ * Buffer abstract data type
+ */
+struct scratchbuf {
+	char *bytes;
+	size_t size;
+	bool need_free;
+};
+
+void scratchbuf_init(struct scratchbuf *buf, char *stackbuf, size_t size);
+int scratchbuf_alloc(struct scratchbuf *buf, size_t sz);
+void scratchbuf_release(struct scratchbuf *buf);
+
+/* Return a C string */
+static inline char *scratchbuf_str(struct scratchbuf *buf)
+{
+	return buf->bytes;
+}
+
+#define SCRATCHBUF_INITIALIZER(buf_) {			\
+	.bytes = buf_,					\
+	.size = sizeof(buf_) + _array_size_chk(buf_),	\
+	.need_free = false,				\
+}