From 6265f192ad56df6f6d1bae58e7727d7f780e2582 Mon Sep 17 00:00:00 2001
From: Keith Winstein <keithw@mit.edu>
Date: Tue, 1 Feb 2011 02:48:08 -0500
Subject: [PATCH] Soft reset

---
 terminalframebuffer.cpp | 9 +++++++++
 terminalframebuffer.hpp | 2 ++
 terminalfunctions.cpp   | 8 ++++++++
 3 files changed, 19 insertions(+)

diff --git a/terminalframebuffer.cpp b/terminalframebuffer.cpp
index 6884817..dfea10d 100644
--- a/terminalframebuffer.cpp
+++ b/terminalframebuffer.cpp
@@ -313,3 +313,12 @@ void Framebuffer::reset( void )
   rows = std::deque<Row>( height, Row( width ) );
   ds = DrawState( width, height );
 }
+
+void Framebuffer::soft_reset( void )
+{
+  ds.insert_mode = false;
+  ds.origin_mode = false;
+  ds.set_scrolling_region( 0, ds.get_height() - 1 );
+  ds.clear_renditions();
+  ds.clear_saved_cursor();
+}
diff --git a/terminalframebuffer.hpp b/terminalframebuffer.hpp
index 43069c7..c456c2b 100644
--- a/terminalframebuffer.hpp
+++ b/terminalframebuffer.hpp
@@ -100,6 +100,7 @@ namespace Terminal {
 
     void save_cursor( void );
     void restore_cursor( void );
+    void clear_saved_cursor( void ) { save = SavedCursor(); }
 
     DrawState( int s_width, int s_height );
   };
@@ -129,6 +130,7 @@ namespace Terminal {
     void delete_cell( int row, int col );
 
     void reset( void );
+    void soft_reset( void );
   };
 }
 
diff --git a/terminalfunctions.cpp b/terminalfunctions.cpp
index d22eae9..ebe1384 100644
--- a/terminalfunctions.cpp
+++ b/terminalfunctions.cpp
@@ -447,3 +447,11 @@ void Esc_RIS( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
 }
 
 static Function func_Esc_RIS( ESCAPE, "c", Esc_RIS );
+
+/* soft reset */
+void CSI_DECSTR( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
+{
+  fb->soft_reset();
+}
+
+static Function func_CSI_DECSTR( CSI, "!p", CSI_DECSTR );