rl_helper: implement a minimal line editing prompt

With this helper, we can replace fgets and printf, so we are able to do
editing line and command history.

1 files changed, 13 insertions, 0 deletions

diff --git a/rl_helper.h b/rl_helper.h
new file mode 100644
index 0000000..3da3406
--- /dev/null
+++ b/rl_helper.h
@@ -0,0 +1,13 @@
+#ifndef __RL_HELPER_H__
+#define __RL_HELPER_H__
+
+typedef void (*line_process_callback)(char *line);
+
+/* initializes buffers and set line process callback */
+void rl_init(line_process_callback cb);
+/* close resources */
+void rl_quit();
+/* add char to line buffer */
+void rl_feed(int c);
+
+#endif // __RL_HELPER_H__