SCO ACS patch from RDB. Apparently required for the Linux console

[sgt/putty] / terminal.c

diff --git a/terminal.c b/terminal.c
index 9f623e5..391f0d2 100644 (file)
--- a/terminal.c
+++ b/terminal.c
@@ -104,6 +104,7 @@ static int tblinker;                       /* When the blinking text is on */
 static int blink_is_real;             /* Actually blink blinking text */
 static int term_echoing;              /* Does terminal want local echo? */
 static int term_editing;              /* Does terminal want local edit? */
+static int sco_acs, save_sco_acs;      /* CSI 10,11,12m -> OEM charset */
 static int vt52_bold;                 /* Force bold on non-bold colours */
 static int utf_state;                 /* Is there a pending UTF-8 character */
 static int utf_char;                  /* and what is it so far. */
@@ -116,7 +117,7 @@ static unsigned long cset_attr[2];
 /*
  * Saved settings on the alternate screen.
  */
-static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset;
+static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset, alt_sco_acs;
 static int alt_t, alt_b;
 static int alt_which;
 
@@ -278,6 +279,7 @@ static void power_on(void)
     alt_wnext = wrapnext = alt_ins = insert = FALSE;
     alt_wrap = wrap = cfg.wrap_mode;
     alt_cset = cset = 0;
+    alt_sco_acs = sco_acs = 0;
     cset_attr[0] = cset_attr[1] = ATTR_ASCII;
     rvideo = 0;
     in_vbell = FALSE;
@@ -536,6 +538,9 @@ static void swap_screen(int which)
     t = cset;
     cset = alt_cset;
     alt_cset = t;
+    t = sco_acs;
+    sco_acs = alt_sco_acs;
+    alt_sco_acs = t;
 
     fix_cpos;
 }
@@ -690,6 +695,7 @@ static void save_cursor(int save)
        save_attr = curr_attr;
        save_cset = cset;
        save_csattr = cset_attr[cset];
+       save_sco_acs = sco_acs;
     } else {
        curs = savecurs;
        /* Make sure the window hasn't shrunk since the save */
@@ -701,6 +707,7 @@ static void save_cursor(int save)
        curr_attr = save_attr;
        cset = save_cset;
        cset_attr[cset] = save_csattr;
+       sco_acs = save_sco_acs;
        fix_cpos;
        if (use_bce)
            erase_char = (' ' | (curr_attr & (ATTR_FGMASK | ATTR_BGMASK)));
@@ -1024,6 +1031,13 @@ void term_out(void)
                    if (c >= 0x10000)
                        c = 0xFFFD;
                    break;
+           }
+           /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
+           else if(sco_acs && 
+                   (c!='\033' && c!='\n' && c!='\r' && c!='\b'))
+           {
+              if (sco_acs == 2) c ^= 0x80;
+              c |= ATTR_SCOACS;
            } else {
              evil_jump:;
                switch (cset_attr[cset]) {
@@ -1052,6 +1066,9 @@ void term_out(void)
                    else
                        c = ((unsigned char) c) | ATTR_ASCII;
                    break;
+               case ATTR_SCOACS:
+                   if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
+                   break;
                }
            }
        }
@@ -1483,6 +1500,10 @@ void term_out(void)
                    compatibility(VT100);
                    cset_attr[0] = ATTR_LINEDRW;
                    break;
+                 case ANSI('U', '('): 
+                   compatibility(OTHER);
+                   cset_attr[0] = ATTR_SCOACS; 
+                   break;
 
                  case ANSI('A', ')'):
                    compatibility(VT100);
@@ -1496,6 +1517,10 @@ void term_out(void)
                    compatibility(VT100);
                    cset_attr[1] = ATTR_LINEDRW;
                    break;
+                 case ANSI('U', ')'): 
+                   compatibility(OTHER);
+                   cset_attr[1] = ATTR_SCOACS; 
+                   break;
 
                  case ANSI('8', '%'):  /* Old Linux code */
                  case ANSI('G', '%'):
@@ -1763,6 +1788,15 @@ void term_out(void)
                                  case 7:       /* enable reverse video */
                                    curr_attr |= ATTR_REVERSE;
                                    break;
+                                 case 10:      /* SCO acs off */
+                                   compatibility(SCOANSI);
+                                   sco_acs = 0; break;
+                                 case 11:      /* SCO acs on */
+                                   compatibility(SCOANSI);
+                                   sco_acs = 1; break;
+                                 case 12:      /* SCO acs on flipped */
+                                   compatibility(SCOANSI);
+                                   sco_acs = 2; break;
                                  case 22:      /* disable bold */
                                    compatibility2(OTHER, VT220);
                                    curr_attr &= ~ATTR_BOLD;
@@ -2499,6 +2533,9 @@ static void do_paint(Context ctx, int may_optimise)
              case ATTR_LINEDRW:
                tchar = unitab_xterm[tchar & 0xFF];
                break;
+             case ATTR_SCOACS:  
+               tchar = unitab_scoacs[tchar&0xFF]; 
+               break;
            }
            tattr |= (tchar & CSET_MASK);
            tchar &= CHAR_MASK;
@@ -2733,6 +2770,9 @@ static void clipme(pos top, pos bottom)
              case ATTR_ASCII:
                uc = unitab_line[uc & 0xFF];
                break;
+             case ATTR_SCOACS:  
+               uc = unitab_scoacs[uc&0xFF]; 
+               break;
            }
            switch (uc & CSET_MASK) {
              case ATTR_ACP:
@@ -2893,6 +2933,9 @@ static int wordtype(int uc)
       case ATTR_ASCII:
        uc = unitab_line[uc & 0xFF];
        break;
+      case ATTR_SCOACS:  
+       uc = unitab_scoacs[uc&0xFF]; 
+       break;
     }
     switch (uc & CSET_MASK) {
       case ATTR_ACP: