From 2663739db116bd238f2eb86c9e635f9d5faaf7d5 Mon Sep 17 00:00:00 2001
From: AnotherTest <ali.mpfard@gmail.com>
Date: Thu, 9 Apr 2020 07:43:12 +0430
Subject: [PATCH] LibVT: Implement Device Status Report (cursor position
 report)

---
 Libraries/LibVT/Terminal.cpp | 12 ++++++++++++
 Libraries/LibVT/Terminal.h   |  3 ++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Libraries/LibVT/Terminal.cpp b/Libraries/LibVT/Terminal.cpp
index 01df69a956..b9e6806c0b 100644
--- a/Libraries/LibVT/Terminal.cpp
+++ b/Libraries/LibVT/Terminal.cpp
@@ -704,6 +704,12 @@ void Terminal::execute_escape_sequence(u8 final)
     case 'f':
         HVP(params);
         break;
+    case 'n':
+        if (params.size() == 1 && params[0] == 6)
+            DSR();
+        else
+            dbg() << "Unknown CSIxn command";
+        break;
     default:
         dbgprintf("Terminal::execute_escape_sequence: Unhandled final '%c'\n", final);
         break;
@@ -806,6 +812,12 @@ void Terminal::RI()
     CUU({});
 }
 
+void Terminal::DSR()
+{
+    // Device Status Report (cursor position query)
+    emit_string(String::format("\033[%d;%dR", m_cursor_row + 1, m_cursor_column + 1));
+}
+
 void Terminal::on_char(u8 ch)
 {
 #ifdef TERMINAL_DEBUG
diff --git a/Libraries/LibVT/Terminal.h b/Libraries/LibVT/Terminal.h
index 8c7bc7a25b..91fd74dc89 100644
--- a/Libraries/LibVT/Terminal.h
+++ b/Libraries/LibVT/Terminal.h
@@ -26,8 +26,8 @@
 
 #pragma once
 
-#include <AK/String.h>
 #include <AK/NonnullOwnPtrVector.h>
+#include <AK/String.h>
 #include <AK/Vector.h>
 #include <LibVT/Position.h>
 
@@ -178,6 +178,7 @@ private:
     void NEL();
     void IND();
     void RI();
+    void DSR();
 
     TerminalClient& m_client;