Add DECSTR and RIS

Implement soft and hard resets (handling intermediate bytes a little
better in the process).

ANSI.c

@@ -176,7 +176,8 @@
     added insert mode;
     BS/CUB/HPB after wrap will move back to the previous line(s);
     added DECOM, DECSTBM, SD & SU;
-    only flush before accessing the console, adding a mode to flush immediately.
+    only flush before accessing the console, adding a mode to flush immediately;
+    added DECSTR & RIS.
 */
 
 #include "ansicon.h"
@@ -213,10 +214,11 @@ struct Cache
 
 #define MAX_ARG 16		// max number of args in an escape sequence
 int   state;			// automata state
-TCHAR prefix;			// escape sequence prefix ( '[', ']' or '(' );
+TCHAR prefix;			// escape sequence prefix ( '[' or ']' );
-TCHAR prefix2;			// secondary prefix ( '?' or '>' );
+TCHAR prefix2;			// secondary prefix ( one of '<=>?' );
-TCHAR suffix;			// escape sequence suffix
+TCHAR suffix;			// escape sequence final byte
-TCHAR suffix2;			// escape sequence secondary suffix
+TCHAR suffix2;			// escape sequence intermediate byte
+int   ibytes;			// count of intermediate bytes
 int   es_argc;			// escape sequence args count
 int   es_argv[MAX_ARG]; 	// escape sequence args
 TCHAR Pt_arg[MAX_PATH*2];	// text parameter for Operating System Command
@@ -945,6 +947,56 @@ void init_tabs( int size )
 }
 
 
+// ========== Reset
+
+void InterpretEscSeq( void );
+
+void Reset( BOOL hard )
+{
+  CONSOLE_CURSOR_INFO CursInfo;
+  CONSOLE_SCREEN_BUFFER_INFOX csbix;
+
+  GetConsoleCursorInfo( hConOut, &CursInfo );
+  CursInfo.bVisible = TRUE;
+  SetConsoleCursorInfo( hConOut, &CursInfo );
+  im =
+  om =
+  tb_margins =
+  pState->crm = FALSE;
+  awm = TRUE;
+  SetConsoleMode( hConOut, cache[0].mode | ENABLE_WRAP_AT_EOL_OUTPUT );
+  shifted = G0_special = SaveG0 = FALSE;
+  pState->SavePos.X = pState->SavePos.Y = 0;
+  pState->SaveAttr = 0;
+  es_argv[0] = es_argc = 0;
+  prefix = '[';
+  prefix2 = suffix2 = 0;
+  suffix = 'm';
+  InterpretEscSeq();
+
+  if (hard)
+  {
+    pState->tabs =
+    pState->noclear = FALSE;
+    prefix2 = '?';
+    es_argv[0] = 3; es_argc = 1;
+    suffix2 = '+';
+    suffix = 'l';
+    InterpretEscSeq();
+    screen_top = -1;
+    csbix.cbSize = sizeof(csbix);
+    if (GetConsoleScreenBufferInfoX &&
+	GetConsoleScreenBufferInfoX( hConOut, &csbix ))
+    {
+      memcpy( csbix.ColorTable, pState->palette, sizeof(csbix.ColorTable) );
+      ++csbix.srWindow.Right;
+      ++csbix.srWindow.Bottom;
+      SetConsoleScreenBufferInfoX( hConOut, &csbix );
+    }
+  }
+}
+
+
 // ========== Print functions
 
 //-----------------------------------------------------------------------------
@@ -981,7 +1033,7 @@ void InterpretEscSeq( void )
 
   if (prefix == '[')
   {
-    if (prefix2 == '?')
+    if (prefix2 == '?' && (suffix2 == 0 || suffix2 == '+'))
     {
       if (suffix == 'h' || suffix == 'l')
       {
@@ -1093,7 +1145,7 @@ void InterpretEscSeq( void )
       top    = TOP;
       bottom = BOTTOM;
     }
-    switch (suffix)
+    if (suffix2 == 0 || suffix2 == '+') switch (suffix)
     {
       case 'm': // SGR
 	if (es_argc == 0) es_argc++; // ESC[m == ESC[0m
@@ -1580,50 +1632,46 @@ void InterpretEscSeq( void )
 	}
       return;
 
-      case 'h': // SM - ESC[#h Set Mode
+      case 'h': // SM - ESC[#...h Set Mode
-	for (i = 0; i < es_argc; i++)
+      case 'l': // RM - ESC[#...l Reset Mode
-	  if (suffix2 == '+')
       {
-	    switch (es_argv[i])
+	BOOL state = (suffix == 'h');
+	for (i = 0; i < es_argc; i++)
+	  if (suffix2 == '+') switch (es_argv[i])
 	  {
 	    case 1: // ACFM
-		pState->fm = TRUE;
+	      pState->fm = state;
 	    break;
 	  }
-	  }
 	  else switch (es_argv[i])
 	  {
 	    case 3: // CRM
-	      pState->crm = TRUE;
+	      pState->crm = state;
 	    break;
 
 	    case 4: // IRM
-	      im = TRUE;
+	      im = state;
 	    break;
 	  }
 	return;
+      }
 
-      case 'l': // RM - ESC[#l Reset Mode
+      default:
-	for (i = 0; i < es_argc; i++)
+      return;
-	  if (suffix2 == '+')
-	  {
-	    switch (es_argv[i])
-	    {
-	      case 1: // ACFM
-		pState->fm = FALSE;
-	      break;
     }
-	  }
+    if (suffix2 == '!') switch (suffix)
-	  else switch (es_argv[i]) // CRM - ESC[3l is handled during parsing
     {
-	    case 4: // IRM
+      case 'p': // DECSTR - ESC[!p Soft reset
-	      im = FALSE;
+	if (es_argc != 0) return;
-	    break;
+	Reset( FALSE );
-	  }
       return;
 
-      case '~':
+      default:
-	if (suffix2 == ',') // DECPS - ESC[#;#;#...,~ Play Sound
+      return;
+    }
+    if (suffix2 == ',') switch (suffix)
+    {
+      case '~': // DECPS - ESC[#;#;#...,~ Play Sound
       {
 	// Frequencies of notes obtained from:
 	//	https://pages.mtu.edu/~suits/notefreqs.html
@@ -1654,8 +1702,8 @@ void InterpretEscSeq( void )
 	    Beep( (es_argv[i] < lenof(snd_freq)) ? snd_freq[es_argv[i]]
 						 : es_argv[i], dur );
 	}
-	}
 	return;
+      }
 
       default:
       return;
@@ -1984,6 +2032,7 @@ ParseAndPrintString( HANDLE hDev,
       if (c == ESC)
       {
 	suffix2 = 0;
+	ibytes = 0;
 	get_state();
 	state = (pState->crm) ? 7 : 2;
       }
@@ -2025,10 +2074,14 @@ ParseAndPrintString( HANDLE hDev,
 	state = 1;
       }
       else if (c >= '\x20' && c <= '\x2f')
-	suffix2 = c;
-      else if (suffix2 != 0)
       {
-	if (suffix2 == '(')     // SCS - Designate G0 character set
+	suffix2 = c;
+	++ibytes;
+      }
+      else if (ibytes != 0)
+      {
+	if (ibytes == 1 &&
+	    suffix2 == '(')     // SCS - Designate G0 character set
 	{
 	  if (c == '0')
 	    shifted = G0_special = TRUE;
@@ -2091,6 +2144,10 @@ ParseAndPrintString( HANDLE hDev,
 	}
 	state = 1;
       }
+      else if (c == 'c')        // RIS Reset to Initial State
+      {
+	Reset( TRUE );
+      }
       else if (c == '[' ||      // CSI Control Sequence Introducer
 	       c == ']')        // OSC Operating System Command
       {
@@ -2134,15 +2191,16 @@ ParseAndPrintString( HANDLE hDev,
       {
 	// ignore it
       }
-      else if (c >= '\x3b' && c <= '\x3f')
+      else if (c >= '\x3c' && c <= '\x3f')
       {
 	prefix2 = c;
       }
       else if (c >= '\x20' && c <= '\x2f')
       {
 	suffix2 = c;
+	++ibytes;
       }
-      else if (suffix2 != 0 && suffix2 != '+' && (suffix2 != ',' || c != '~'))
+      else if (ibytes > 1)
       {
 	state = 1;
       }
@@ -2175,8 +2233,9 @@ ParseAndPrintString( HANDLE hDev,
       else if (c >= '\x20' && c <= '\x2f')
       {
 	suffix2 = c;
+	++ibytes;
       }
-      else if (suffix2 != 0 && suffix2 != '+' && (suffix2 != ',' || c != '~'))
+      else if (ibytes > 1)
       {
 	state = 1;
       }

ansicon.c

@@ -91,7 +91,7 @@
     use -pu to unload from the parent.
 */
 
-#define PDATE L"22 December, 2017"
+#define PDATE L"23 December, 2017"
 
 #include "ansicon.h"
 #include "version.h"

readme.txt

@@ -191,6 +191,7 @@ Sequences Recognised
 	\e[?5W		DECST8C Set Tab at Every 8 Columns
 	\e[?5;#W	DECST8C Set Tab at Every # Columns (ANSICON extension)
 	\e[#;#r 	DECSTBM Set Top and Bottom Margins
+	\e[!p		DECSTR	Soft Terminal Reset
 	\e[?25h 	DECTCEM Text Cursor Enable Mode (show cursor)
 	\e[?25l 	DECTCEM Text Cursor Enable Mode (hide cursor)
 	\e[#M		DL	Delete Line
@@ -214,6 +215,7 @@ Sequences Recognised
 	\eE		NEL	Next Line
 	\e[#b		REP	Repeat
 	\eM		RI	Reverse Index
+	\ec		RIS	Reset to Initial State
 	\e(0		SCS	Select Character Set (DEC special graphics)
 	\e(B		SCS	Select Character Set (ASCII)
 	\e[#;#;#m	SGR	Select Graphic Rendition
@@ -322,7 +324,7 @@ Version History
 
     Legend: + added, - bug-fixed, * changed.
 
-    1.80 - 22 December, 2017:
+    1.80 - 23 December, 2017:
     - fix unloading;
     - fix -e et al when redirecting to CON;
     - hook CreateFile and CreateConsoleScreenBuffer to force read/write access
@@ -349,7 +351,8 @@ Version History
     + added SCS, but only for special/ASCII (same as Win10);
     + added tab handling (HT, HTS, TBC & DECST8C);
     + added IRM;
-    + added DECOM, DECSTBM, SD & SU.
+    + added DECOM, DECSTBM, SD & SU;
+    + added DECSTR & RIS.
 
     1.72 - 24 December, 2015:
     - handle STD_OUTPUT_HANDLE & STD_ERROR_HANDLE in WriteFile;
@@ -578,4 +581,4 @@ Distribution
 
 
 ==============================
-Jason Hood, 22 December, 2017.
+Jason Hood, 23 December, 2017.

sequences.txt

@@ -182,6 +182,25 @@ H	set tab stop
 [?95h	don't clear screen when changing columns
 [?95l	clear screen when changing columns
 
+[!p	soft reset:
+	  show cursor
+	  perform control functions
+	  replace characters
+	  set origin to top line
+	  wrap lines at screen edge
+	  select ASCII
+	  remove margins
+	  default SGR
+	  set the saved cursor to the top-left
+c	hard reset:
+	  as above
+	  restore console tab handling
+	  restore the entire palette
+	  restore original columns
+	  clear screen when changing columns
+	  clear the buffer
+	  home the cursor
+
 [c	sends "\e[?62;1c" to console input (where \e is escape)
 [0c	as above
 [5n	sends "\e[0n" to console input