From bb637bab94a8c2565e9d097054d86eba2b6ae7e6 Mon Sep 17 00:00:00 2001
From: Hadeed Ahmad <hadeedji@gmail.com>
Date: Mon, 11 Sep 2023 10:07:48 +0500
Subject: [PATCH] Add backspacing to prompt
---
src/input.c | 1 +
src/kilo.c | 30 ++++++++++++++++++++----------
2 files changed, 21 insertions(+), 10 deletions(-)
diff --git a/src/input.c b/src/input.c
index 70af415..9e62080 100644
--- a/src/input.c
+++ b/src/input.c
@@ -31,6 +31,7 @@ void input_process_key(KEY c) {
break;
case CTRL_KEY('L'):
+ case ESCAPE:
case NOP:
break;
diff --git a/src/kilo.c b/src/kilo.c
index 06113f1..449c057 100644
--- a/src/kilo.c
+++ b/src/kilo.c
@@ -71,17 +71,27 @@ char *editor_prompt(const char *prompt) {
ui_draw_screen();
KEY key = terminal_read_key();
- if (key == ESCAPE) goto failure;
- else if (key == ENTER) {
- if (buf_size > 0) goto success;
- else goto failure;
- } else if (isprint(key)) {
- if (buf_size + 1 >= buf_cap)
- buf = realloc(buf, buf_cap *= 2);
+ switch (key) {
+ case BACKSPACE:
+ if (buf_size > 0)
+ buf[--buf_size] = '\0';
+ break;
+ case ENTER:
+ if (buf_size > 0) goto success;
+ else goto failure;
+ break;
+ case ESCAPE:
+ goto failure;
+ break;
+ default:
+ if (isprint(key)) {
+ if (buf_size + 1 >= buf_cap)
+ buf = realloc(buf, buf_cap *= 2);
- buf[buf_size] = key;
- buf_size++;
- buf[buf_size] = '\0';
+ buf[buf_size] = key;
+ buf_size++;
+ buf[buf_size] = '\0';
+ }
}
}