From 1ba36b785c8d158092446faf150640bf0583fb7e Mon Sep 17 00:00:00 2001
From: Andrey Petrov <andrey.petrov@shazow.net>
Date: Sun, 17 Mar 2019 17:35:49 -0400
Subject: [PATCH] sshd/terminal: Add Terminal.ClearLine option
---
sshd/terminal/terminal.go | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/sshd/terminal/terminal.go b/sshd/terminal/terminal.go
index 9d666ff..00963f6 100644
--- a/sshd/terminal/terminal.go
+++ b/sshd/terminal/terminal.go
@@ -44,6 +44,11 @@ type Terminal struct {
// and the new cursor position.
AutoCompleteCallback func(line string, pos int, key rune) (newLine string, newPos int, ok bool)
+ // ClearLine will clear the input line on enter, instead of printing a new
+ // line after the input. It's useful for replacing the input with something
+ // else without echoing it.
+ ClearLine bool
+
// Escape contains a pointer to the escape codes for this terminal.
// It's always a valid pointer, although the escape codes themselves
// may be empty if the terminal doesn't support them.
@@ -507,8 +512,16 @@ func (t *Terminal) handleKey(key rune) (line string, ok bool) {
}
case keyEnter:
t.moveCursorToPos(len(t.line))
- t.queue([]rune("\r\n"))
line = string(t.line)
+
+ if t.ClearLine {
+ // Clear line on enter instead of starting a new line
+ t.eraseNPreviousChars(t.pos)
+ ok = true
+ return
+ }
+
+ t.queue([]rune("\r\n"))
ok = true
t.line = t.line[:0]
t.pos = 0