<p>osmith has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/c/libosmocore/+/25013">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">vty: clear screen with ^L<br><br>Use ANSI escape characters to clear the screen with ^L, like it works<br>in typical Linux shells. I always found it slightly inconvenient that<br>this didn't work in the VTY.<br><br>Change-Id: Ie2356cd92f39b4dc28b5c20bbe4557fb0d972747<br>---<br>M src/vty/vty.c<br>1 file changed, 17 insertions(+), 0 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/13/25013/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/src/vty/vty.c b/src/vty/vty.c</span><br><span>index 76c6ef5..a39f268 100644</span><br><span>--- a/src/vty/vty.c</span><br><span>+++ b/src/vty/vty.c</span><br><span>@@ -459,6 +459,7 @@</span><br><span> </span><br><span> static const char telnet_backward_char = 0x08;</span><br><span> static const char telnet_space_char = ' ';</span><br><span style="color: hsl(120, 100%, 40%);">+static const char telnet_escape_char = 0x1B;</span><br><span> </span><br><span> /* Basic function to write buffer to vty. */</span><br><span> static void vty_write(struct vty *vty, const char *buf, size_t nbytes)</span><br><span>@@ -858,6 +859,19 @@</span><br><span>    vty->cp = 0;</span><br><span> }</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+/* When '^L' is typed, clear all lines above the current one. */</span><br><span style="color: hsl(120, 100%, 40%);">+static void vty_clear_screen(struct vty *vty)</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+  vty_out(vty, "%c%s%c%s",</span><br><span style="color: hsl(120, 100%, 40%);">+            telnet_escape_char,</span><br><span style="color: hsl(120, 100%, 40%);">+           "[2J", /* Erase Screen */</span><br><span style="color: hsl(120, 100%, 40%);">+           telnet_escape_char,</span><br><span style="color: hsl(120, 100%, 40%);">+           "[H" /* Cursor Home */</span><br><span style="color: hsl(120, 100%, 40%);">+      );</span><br><span style="color: hsl(120, 100%, 40%);">+    vty_prompt(vty);</span><br><span style="color: hsl(120, 100%, 40%);">+      vty_redraw_line(vty);</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span> /* When '^Z' is received from vty, move down to the enable mode. */</span><br><span> static void vty_end_config(struct vty *vty)</span><br><span> {</span><br><span>@@ -1402,6 +1416,9 @@</span><br><span>                case CONTROL('K'):</span><br><span>                   vty_kill_line(vty);</span><br><span>                  break;</span><br><span style="color: hsl(120, 100%, 40%);">+                case CONTROL('L'):</span><br><span style="color: hsl(120, 100%, 40%);">+                    vty_clear_screen(vty);</span><br><span style="color: hsl(120, 100%, 40%);">+                        break;</span><br><span>               case CONTROL('N'):</span><br><span>                   vty_next_line(vty);</span><br><span>                  break;</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/c/libosmocore/+/25013">change 25013</a>. To unsubscribe, or for help writing mail filters, visit <a href="https://gerrit.osmocom.org/settings">settings</a>.</p><div itemscope itemtype="http://schema.org/EmailMessage"><div itemscope itemprop="action" itemtype="http://schema.org/ViewAction"><link itemprop="url" href="https://gerrit.osmocom.org/c/libosmocore/+/25013"/><meta itemprop="name" content="View Change"/></div></div>

<div style="display:none"> Gerrit-Project: libosmocore </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-Change-Id: Ie2356cd92f39b4dc28b5c20bbe4557fb0d972747 </div>
<div style="display:none"> Gerrit-Change-Number: 25013 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: osmith <osmith@sysmocom.de> </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>