LibVT: Support the DA (Device Attributes) request (final 'c')

This is used by vttest on startup to query the device for identity.

1 files changed, 15 insertions, 0 deletions

diff --git a/Libraries/LibVT/Terminal.cpp b/Libraries/LibVT/Terminal.cpp
index fe191c1872..4241392053 100644
--- a/Libraries/LibVT/Terminal.cpp
+++ b/Libraries/LibVT/Terminal.cpp
@@ -491,6 +491,12 @@ void Terminal::escape$L(const ParamVector& params)
     m_need_full_flush = true;
 }
 
+void Terminal::escape$c(const ParamVector&)
+{
+    // DA - Device Attributes
+    emit_string("\033[?1;0c");
+}
+
 void Terminal::escape$M(const ParamVector& params)
 {
     int count = 1;
@@ -659,6 +665,9 @@ void Terminal::execute_escape_sequence(u8 final)
     case 'h':
         escape$h_l(false, question_param, params);
         break;
+    case 'c':
+        escape$c(params);
+        break;
     default:
         dbgprintf("Terminal::execute_escape_sequence: Unhandled final '%c'\n", final);
         break;
@@ -867,6 +876,12 @@ void Terminal::inject_string(const StringView& str)
         on_char(str[i]);
 }
 
+void Terminal::emit_string(const StringView& str)
+{
+    for (size_t i = 0; i < str.length(); ++i)
+        m_client.emit_char(str[i]);
+}
+
 void Terminal::unimplemented_escape()
 {
     StringBuilder builder;