Basic CSI functions

terminalcsi.cpp

@@ -0,0 +1,51 @@
+#include <unistd.h>
+
+#include "terminal.hpp"
+
+using namespace Terminal;
+
+void Emulator::CSI_EL( void )
+{
+  if ( params == "1" ) { /* start of screen to active position, inclusive */
+    for ( int x = 0; x <= cursor_col; x++ ) {
+      rows[ cursor_row ].cells[ x ].contents.clear();
+    }
+  } else if ( params == "2" ) { /* all of line */
+    rows[ cursor_row ] = Row( width );
+  } else { /* active position to end of line, inclusive */
+    for ( int x = cursor_col; x < width; x++ ) {
+      rows[ cursor_row ].cells[ x ].contents.clear();
+    }
+  }
+}
+
+void Emulator::CSI_cursormove( void )
+{
+  parse_params();
+  int num = 1;
+  if ( parsed_params.size() >= 1 ) {
+    num = parsed_params[ 0 ];
+  }
+
+  switch ( dispatch_chars[ 0 ] ) {
+  case 'A':
+    cursor_row -= num;
+    break;
+  case 'B':
+    cursor_row += num;
+    break;
+  case 'C':
+    cursor_col += num;
+    break;
+  case 'D':
+    cursor_col -= num;
+    break;
+  }
+
+  if ( cursor_row < 0 ) cursor_row = 0;
+  if ( cursor_row >= height ) cursor_row = height - 1;
+  if ( cursor_col < 0 ) cursor_col = 0;
+  if ( cursor_col >= width ) cursor_col = width;
+
+  newgrapheme();
+}