From 77c5f08971d6354aee5d402d25adea8d82b6e67b Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@mutabah.net>
Date: Sat, 14 Sep 2013 09:40:58 +0800
Subject: [PATCH] Usermode/GUI Terminal - A few fixes to vt100 code exposed by
 use in kernel

---
 .../Applications/gui_terminal_src/display.c   |  4 ++
 .../gui_terminal_src/include/display.h        |  1 +
 .../Applications/gui_terminal_src/vt100.c     | 48 ++++++++++++-------
 3 files changed, 36 insertions(+), 17 deletions(-)

diff --git a/Usermode/Applications/gui_terminal_src/display.c b/Usermode/Applications/gui_terminal_src/display.c
index 8b61bd8d..901e967f 100644
--- a/Usermode/Applications/gui_terminal_src/display.c
+++ b/Usermode/Applications/gui_terminal_src/display.c
@@ -458,6 +458,10 @@ void Display_ClearLines(tTerminal *Term, int Dir)	// 0: All, 1: Forward, -1: Rev
 	}
 }
 
+void Display_ResetAttributes(tTerminal *Term)
+{
+	UNIMPLIMENTED();
+}
 void Display_SetForeground(tTerminal *Term, uint32_t RGB)
 {
 	char	buf[7+1];
diff --git a/Usermode/Applications/gui_terminal_src/include/display.h b/Usermode/Applications/gui_terminal_src/include/display.h
index cab762cb..2e244877 100644
--- a/Usermode/Applications/gui_terminal_src/include/display.h
+++ b/Usermode/Applications/gui_terminal_src/include/display.h
@@ -26,6 +26,7 @@ extern void	Display_SaveCursor(tTerminal *Term);
 extern void	Display_RestoreCursor(tTerminal *Term);
 extern void	Display_ClearLine(tTerminal *Term, int Dir);	// 0: All, 1: Forward, -1: Reverse
 extern void	Display_ClearLines(tTerminal *Term, int Dir);	// 0: All, 1: Forward, -1: Reverse
+extern void	Display_ResetAttributes(tTerminal *Term);
 extern void	Display_SetForeground(tTerminal *Term, uint32_t RGB);
 extern void	Display_SetBackground(tTerminal *Term, uint32_t RGB);
 /**
diff --git a/Usermode/Applications/gui_terminal_src/vt100.c b/Usermode/Applications/gui_terminal_src/vt100.c
index 69296bdb..c1d51777 100644
--- a/Usermode/Applications/gui_terminal_src/vt100.c
+++ b/Usermode/Applications/gui_terminal_src/vt100.c
@@ -5,13 +5,17 @@
  * vt100.c
  * - VT100/xterm Emulation
  */
-#include <string.h>
 #include <limits.h>
 #include "include/vt100.h"
 #include "include/display.h"
 #include <ctype.h>	// isalpha
-#include <acess/sys.h>	// _SysDebug
-#include <assert.h>
+#ifdef KERNEL_VERSION
+# define _SysDebug(v...)	Debug("VT100 "v)
+#else
+# include <acess/sys.h>	// _SysDebug
+# include <string.h>
+# include <assert.h>
+#endif
 
 const uint32_t	caVT100Colours[] = {
 	// Black, Red, Green, Yellow, Blue, Purple, Cyan, Gray
@@ -87,21 +91,28 @@ int Term_HandleVT100(tTerminal *Term, int Len, const char *Buf)
 
 	switch( *Buf )
 	{
+	// TODO: Need to handle \t and ^A-Z
 	case '\b':
 		Display_MoveCursor(Term, 0, -1);
 		Display_AddText(Term, 1, " ");
 		Display_MoveCursor(Term, 0, -1);
-		// TODO: Need to handle \t and ^A-Z
 		return 1;
 	case '\t':
 		// TODO: tab (get current cursor pos, space until multiple of 8)
 		return 1;
 	case '\n':
+		// TODO: Support disabling CR after NL
 		Display_Newline(Term, 1);
 		return 1;
 	case '\r':
-		Display_MoveCursor(Term, 0, INT_MIN);
-		return 1;
+		if( Len >= 2 && Buf[1] == '\n' ) {
+			Display_Newline(Term, 1);
+			return 2;
+		}
+		else {
+			Display_MoveCursor(Term, 0, INT_MIN);
+			return 1;
+		}
 	}
 
 	 int	ret = 0;
@@ -241,32 +252,35 @@ int Term_HandleVT100_Long(tTerminal *Term, int Len, const char *Buffer)
 			if( argc == 0 )
 			{
 				// Reset
+				Display_ResetAttributes(Term);
 			}
 			else
 			{
-				int i;
-				for( i = 0; i < argc; i ++ )
+				for( int i = 0; i < argc; i ++ )
 				{
-					if( args[i] < 8 )
-					{
-						// TODO: Flags?
-					}
-					else if( 30 <= args[i] && args[i] <= 37 )
+					switch(args[i])
 					{
+					case 0:
+						Display_ResetAttributes(Term);
+						break;
+					case 30 ... 37:
 						// TODO: Bold/bright
 						Display_SetForeground( Term, caVT100Colours[ args[i]-30 ] );
-					} 
-					else if( 40 <= args[i] && args[i] <= 47 )
-					{
+						break;
+					case 40 ... 47:
 						// TODO: Bold/bright
 						Display_SetBackground( Term, caVT100Colours[ args[i]-30 ] );
+						break;
+					default:
+						_SysDebug("TODO: VT100 \\e[%im", args[i]);
+						break;
 					} 
 				}
 			}
 			break;
 		// Set scrolling region
 		case 'r':
-			Display_SetScrollArea(Term, args[0], args[1]);
+			Display_SetScrollArea(Term, args[0], args[1] - args[0]);
 			break;
 		
 		case 's':
-- 
2.20.1