Rename `append_buffer` to textbuf

This name is a little bit better I think, and it will be nice to have a
distinction between this utility and the 'file' kind of buffer.

1 files changed, 32 insertions, 0 deletions

diff --git a/textbuf.c b/textbuf.c
new file mode 100644
index 0000000..e68ddbd
--- /dev/null
+++ b/textbuf.c
@@ -0,0 +1,32 @@
+#include "textbuf.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "error.h"
+
+struct textbuf textbuf_init()
+{
+	struct textbuf result;
+	result.buffer = NULL;
+	result.length = 0;
+	return result;
+}
+
+void textbuf_append(struct textbuf *textbuf, const char *str, int len)
+{
+	char *new = realloc(textbuf->buffer, textbuf->length + len);
+	if (new == NULL) {
+		fatal_error("Failed to reallocate textbuf!");
+		return;
+	}
+
+	memcpy(&new[textbuf->length], str, len);
+	textbuf->buffer = new;
+	textbuf->length += len;
+}
+
+void textbuf_free(struct textbuf *textbuf)
+{
+	free(textbuf->buffer);
+}