vt320.java

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          case 'I': // RI
            insertLine(R, 1, SCROLL_DOWN);
            break;
          case 'E': /* NEL */
            if (R == bm || R == rows - 1)
              insertLine(R, 1, SCROLL_UP);
            else
              R++;
            C = 0;
            if (debug > 1)
              System.out.println("ESC E (at " + R + ")");
            break;
          case 'D': /* IND */
            if (R == bm || R == rows - 1)
              insertLine(R, 1, SCROLL_UP);
            else
              R++;
            if (debug > 1)
              System.out.println("ESC D (at " + R + " )");
            break;
          case 'J': /* erase to end of screen */
            if (R < rows - 1)
              deleteArea(0, R + 1, columns, rows - R - 1, attributes);
            if (C < columns - 1)
              deleteArea(C, R, columns - C, 1, attributes);
            break;
          case 'K':
            if (C < columns - 1)
              deleteArea(C, R, columns - C, 1, attributes);
            break;
          case 'M': // RI
            System.out.println("ESC M : R is "+R+", tm is "+tm+", bm is "+bm);
            if (R > bm) // outside scrolling region
              break;
            if (R > tm) { // just go up 1 line.
              R--;
            } else { // scroll down
              insertLine(R, 1, SCROLL_DOWN);
            }
            /* else do nothing ; */
            if (debug > 2)
              System.out.println("ESC M ");
            break;
          case 'H':
            if (debug > 1)
              System.out.println("ESC H at " + C);
            /* right border probably ...*/
            if (C >= columns)
              C = columns - 1;
            Tabs[C] = 1;
            break;
          case 'N': // SS2
            onegl = 2;
            break;
          case 'O': // SS3
            onegl = 3;
            break;
          case '=':
            /*application keypad*/
            if (debug > 0)
              System.out.println("ESC =");
            keypadmode = true;
            break;
          case '<': /* vt52 mode off */
            vt52mode = false;
            break;
          case '>': /*normal keypad*/
            if (debug > 0)
              System.out.println("ESC >");
            keypadmode = false;
            break;
          case '7': /*save cursor, attributes, margins */
            Sc = C;
            Sr = R;
            Sgl = gl;
            Sgr = gr;
            Sa = attributes;
            Sgx = new char[4];
            for (int i = 0; i < 4; i++) Sgx[i] = gx[i];
            Stm = getTopMargin();
            Sbm = getBottomMargin();
            if (debug > 1)
              System.out.println("ESC 7");
            break;
          case '8': /*restore cursor, attributes, margins */
            C = Sc;
            R = Sr;
            gl = Sgl;
            gr = Sgr;
            for (int i = 0; i < 4; i++) gx[i] = Sgx[i];
            setTopMargin(Stm);
            setBottomMargin(Sbm);
            attributes = Sa;
            if (debug > 1)
              System.out.println("ESC 8");
            break;
          case '(': /* Designate G0 Character set (ISO 2022) */
            term_state = TSTATE_SETG0;
            usedcharsets = true;
            break;
          case ')': /* Designate G1 character set (ISO 2022) */
            term_state = TSTATE_SETG1;
            usedcharsets = true;
            break;
          case '*': /* Designate G2 Character set (ISO 2022) */
            term_state = TSTATE_SETG2;
            usedcharsets = true;
            break;
          case '+': /* Designate G3 Character set (ISO 2022) */
            term_state = TSTATE_SETG3;
            usedcharsets = true;
            break;
          case '~': /* Locking Shift 1, right */
            gr = 1;
            usedcharsets = true;
            break;
          case 'n': /* Locking Shift 2 */
            gl = 2;
            usedcharsets = true;
            break;
          case '}': /* Locking Shift 2, right */
            gr = 2;
            usedcharsets = true;
            break;
          case 'o': /* Locking Shift 3 */
            gl = 3;
            usedcharsets = true;
            break;
          case '|': /* Locking Shift 3, right */
            gr = 3;
            usedcharsets = true;
            break;
          case 'Y': /* vt52 cursor address mode , next chars are x,y */
            term_state = TSTATE_VT52Y;
            break;
          default:
            System.out.println("ESC unknown letter: " + c + " (" + ((int) c) + ")");
            break;
        }
        break;
      case TSTATE_VT52X:
        C = c - 37;
        term_state = TSTATE_VT52Y;
        break;
      case TSTATE_VT52Y:
        R = c - 37;
        term_state = TSTATE_DATA;
        break;
      case TSTATE_SETG0:
        if (c != '0' && c != 'A' && c != 'B' && c != '<')
          System.out.println("ESC ( " + c + ": G0 char set?  (" + ((int) c) + ")");
        else {
          if (debug > 2) System.out.println("ESC ( : G0 char set  (" + c + " " + ((int) c) + ")");
          gx[0] = c;
        }
        term_state = TSTATE_DATA;
        break;
      case TSTATE_SETG1:
        if (c != '0' && c != 'A' && c != 'B' && c != '<') {
          System.out.println("ESC ) " + c + " (" + ((int) c) + ") :G1 char set?");
        } else {
          if (debug > 2) System.out.println("ESC ) :G1 char set  (" + c + " " + ((int) c) + ")");
          gx[1] = c;
        }
        term_state = TSTATE_DATA;
        break;
      case TSTATE_SETG2:
        if (c != '0' && c != 'A' && c != 'B' && c != '<')
          System.out.println("ESC*:G2 char set?  (" + ((int) c) + ")");
        else {
          if (debug > 2) System.out.println("ESC*:G2 char set  (" + c + " " + ((int) c) + ")");
          gx[2] = c;
        }
        term_state = TSTATE_DATA;
        break;
      case TSTATE_SETG3:
        if (c != '0' && c != 'A' && c != 'B' && c != '<')
          System.out.println("ESC+:G3 char set?  (" + ((int) c) + ")");
        else {
          if (debug > 2) System.out.println("ESC+:G3 char set  (" + c + " " + ((int) c) + ")");
          gx[3] = c;
        }
        term_state = TSTATE_DATA;
        break;
      case TSTATE_ESCSQUARE:
        switch (c) {
          case '8':
            for (int i = 0; i < columns; i++)
              for (int j = 0; j < rows; j++)
                putChar(i, j, 'E', 0);
            break;
          default:
            System.out.println("ESC # " + c + " not supported.");
            break;
        }
        term_state = TSTATE_DATA;
        break;
      case TSTATE_DCS:
        if (c == '\\' && dcs.charAt(dcs.length() - 1) == ESC) {
          handle_dcs(dcs);
          term_state = TSTATE_DATA;
          break;
        }
        dcs = dcs + c;
        break;

      case TSTATE_DCEQ:
        term_state = TSTATE_DATA;
        switch (c) {
          case '0':
          case '1':
          case '2':
          case '3':
          case '4':
          case '5':
          case '6':
          case '7':
          case '8':
          case '9':
            DCEvars[DCEvar] = DCEvars[DCEvar] * 10 + ((int) c) - 48;
            term_state = TSTATE_DCEQ;
            break;
          case ';':
            DCEvar++;
            DCEvars[DCEvar] = 0;
            term_state = TSTATE_DCEQ;
            break;
          case 's': // XTERM_SAVE missing!
            if (true || debug > 1)
              System.out.println("ESC [ ? " + DCEvars[0] + " s unimplemented!");
            break;
          case 'r': // XTERM_RESTORE
            if (true || debug > 1)
              System.out.println("ESC [ ? " + DCEvars[0] + " r");
            /* DEC Mode reset */
            for (int i = 0; i <= DCEvar; i++) {
              switch (DCEvars[i]) {
                case 3: /* 80 columns*/
                  setScreenSize(80, getRows());
                  break;
                case 4: /* scrolling mode, smooth */
                  break;
                case 5: /* light background */
                  break;
                case 6: /* DECOM (Origin Mode) move inside margins. */
                  moveoutsidemargins = true;
                  break;
                case 7: /* DECAWM: Autowrap Mode */
                  wraparound = false;
                  break;
                case 12:/* local echo off */
                  break;
                case 9: 	/* X10 mouse */
                case 1000:	/* xterm style mouse report on */
                case 1001:
                case 1002:
                case 1003:
                  mouserpt = DCEvars[i];
                  break;
                default:
                  System.out.println("ESC [ ? " + DCEvars[0] + " r, unimplemented!");
              }
            }
            break;
          case 'h': // DECSET
            if (debug > 0)
              System.out.println("ESC [ ? " + DCEvars[0] + " h");
            /* DEC Mode set */
            for (int i = 0; i <= DCEvar; i++) {
              switch (DCEvars[i]) {
                case 1:  /* Application cursor keys */
                  KeyUp[0] = "\u001bOA";
                  KeyDown[0] = "\u001bOB";
                  KeyRight[0] = "\u001bOC";
                  KeyLeft[0] = "\u001bOD";
                  break;
                case 2: /* DECANM */
                  vt52mode = false;
                  break;
                case 3: /* 132 columns*/
                  setScreenSize(132, getRows());
                  break;
                case 6: /* DECOM: move inside margins. */
                  moveoutsidemargins = false;
                  break;
                case 7: /* DECAWM: Autowrap Mode */
                  wraparound = true;
                  break;
                case 25: /* turn cursor on */
                  showCursor(true);
                  break;
                case 9: 	/* X10 mouse */
                case 1000:	/* xterm style mouse report on */
                case 1001:
                case 1002:
                case 1003:
                  mouserpt = DCEvars[i];
                  break;

                  /* unimplemented stuff, fall through */
                  /* 4  - scrolling mode, smooth */
                  /* 5  - light background */
                  /* 12 - local echo off */
                  /* 18 - DECPFF - Printer Form Feed Mode -> On */
                  /* 19 - DECPEX - Printer Extent Mode -> Screen */
                default:
                  System.out.println("ESC [ ? " + DCEvars[0] + " h, unsupported.");
                  break;
              }
            }
            break;
          case 'i': // DEC Printer Control, autoprint, echo screenchars to printer
            // This is different to CSI i!
            // Also: "Autoprint prints a final display line only when the
            // cursor is moved off the line by an autowrap or LF, FF, or
            // VT (otherwise do not print the line)."
            switch (DCEvars[0]) {
              case 1:
                if (debug > 1)
                  System.out.println("CSI ? 1 i : Print line containing cursor");
                break;
              case 4:
                if (debug > 1)
                  System.out.println("CSI ? 4 i : Start passthrough printing");
                break;
              case 5:
                if (debug > 1)
                  System.out.println("CSI ? 4 i : Stop passthrough printing");
                break;
            }
            break;
          case 'l':	//DECRST
            /* DEC Mode reset */
            if (debug > 0)
              System.out.println("ESC [ ? " + DCEvars[0] + " l");
            for (int i = 0; i <= DCEvar; i++) {
              switch (DCEvars[i]) {
                case 1:  /* Application cursor keys */
                  KeyUp[0] = "\u001b[A";
                  KeyDown[0] = "\u001b[B";
                  KeyRight[0] = "\u001b[C";
                  KeyLeft[0] = "\u001b[D";
                  break;
                case 2: /* DECANM */
                  vt52mode = true;
                  break;
                case 3: /* 80 columns*/
                  setScreenSize(80, getRows());
                  break;
                case 6: /* DECOM: move outside margins. */
                  moveoutsidemargins = true;
                  break;
                case 7: /* DECAWM: Autowrap Mode OFF */
                  wraparound = false;
                  break;
                case 25: /* turn cursor off */
                  showCursor(false);
                  break;
                  /* Unimplemented stuff: */
                  /* 4  - scrolling mode, jump */
                  /* 5  - dark background */
                  /* 7  - DECAWM - no wrap around mode */
                  /* 12 - local echo on */
                  /* 18 - DECPFF - Printer Form Feed Mode -> Off*/
                  /* 19 - DECPEX - Printer Extent Mode -> Scrolling Region */
                case 9: 	/* X10 mouse */
                case 1000:	/* xterm style mouse report OFF */
                case 1001:
                case 1002:
                case 1003:
                  mouserpt = 0;
                  break;
                default:
                  System.out.println("ESC [ ? " + DCEvars[0] + " l, unsupported.");
                  break;
              }
            }
            break;
          case 'n':
            if (debug > 0)
              System.out.println("ESC [ ? " + DCEvars[0] + " n");
            switch (DCEvars[0]) {
              case 15:
                /* printer? no printer. */
                write(((char) ESC) + "[?13n", false);
                System.out.println("ESC[5n");
                break;
              default:
                System.out.println("ESC [ ? " + DCEvars[0] + " n, unsupported.");
                break;
            }
            break;
          default:
            System.out.println("ESC [ ? " + DCEvars[0] + " " + c + ", unsupported.");
            break;
        }
        break;
      case TSTATE_CSI_EX:
        term_state = TSTATE_DATA;
        switch (c) {
          case ESC:
            term_state = TSTATE_ESC;
            break;
          default:
            System.out.println("Unknown character ESC[! character is " + (int)