From: John Hodge (sonata) <tpg@mutabah.net>
Date: Mon, 27 May 2013 11:53:47 +0000 (+0800)
Subject: Kernel/VTerm - Implimented cursor save/restore
X-Git-Tag: rel0.15~292^2~7
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=cc3501e20d89f5e9db13bd874310bfb9983a35a6;p=tpg%2Facess2.git

Kernel/VTerm - Implimented cursor save/restore
---

diff --git a/KernelLand/Kernel/drv/vterm.h b/KernelLand/Kernel/drv/vterm.h
index 39cc4386..5acb4640 100644
--- a/KernelLand/Kernel/drv/vterm.h
+++ b/KernelLand/Kernel/drv/vterm.h
@@ -62,6 +62,7 @@ struct sVTerm
 	 int	AltWritePos;	//!< Alternate write position
 	short	ScrollTop;	//!< Top of scrolling region (smallest)
 	short	ScrollHeight;	//!< Length of scrolling region
+	 int	SavedWritePos;	//!< Saved cursor position (\e[s and \e[u)
 
 	char	EscapeCodeCache[16];
 	size_t	EscapeCodeLen;
diff --git a/KernelLand/Kernel/drv/vterm_vt100.c b/KernelLand/Kernel/drv/vterm_vt100.c
index 1f344794..8ebd9bfd 100644
--- a/KernelLand/Kernel/drv/vterm_vt100.c
+++ b/KernelLand/Kernel/drv/vterm_vt100.c
@@ -228,7 +228,19 @@ void VT_int_ParseEscape_StandardLarge(tVTerm *Term, char CmdChar, int argc, int
 		Term->ScrollTop = args[0];
 		Term->ScrollHeight = args[1] - args[0];
 		break;
-	
+
+	// Save cursor position
+	case 's':
+		if( argc != 0 )	break;
+		Term->SavedWritePos = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltWritePos : Term->WritePos;
+		break;
+
+	// Restore saved cursor position
+	case 'u':
+		if( argc != 0 )	break;
+		*((Term->Flags & VT_FLAG_ALTBUF) ? &Term->AltWritePos : &Term->WritePos) = Term->SavedWritePos;
+		break;
+
 	default:
 		Log_Warning("VTerm", "Unknown control sequence '\\x1B[%c'", CmdChar);
 		break;