From: Hani Benhabiles <kroosec@gmail.com>
Date: Sun, 1 Jun 2014 11:53:35 +0000 (+0100)
Subject: readline: Clear screen on form feed.
X-Git-Tag: pull-nvme-20200902~4741^2~1
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=075ccb6cd3f7abe648a3e708ed34cfced378647f;p=qemu-nvme.git

readline: Clear screen on form feed.

Signed-off-by: Hani Benhabiles <hani@linux.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
---

diff --git a/util/readline.c b/util/readline.c
index 7214e8407c..cc1302ac0a 100644
--- a/util/readline.c
+++ b/util/readline.c
@@ -351,6 +351,12 @@ static void readline_completion(ReadLineState *rs)
     }
 }
 
+static void readline_clear_screen(ReadLineState *rs)
+{
+    rs->printf_func(rs->opaque, "\033[2J\033[1;1H");
+    readline_show_prompt(rs);
+}
+
 /* return true if command handled */
 void readline_handle_byte(ReadLineState *rs, int ch)
 {
@@ -369,6 +375,9 @@ void readline_handle_byte(ReadLineState *rs, int ch)
         case 9:
             readline_completion(rs);
             break;
+        case 12:
+            readline_clear_screen(rs);
+            break;
         case 10:
         case 13:
             rs->cmd_buf[rs->cmd_buf_size] = '\0';