ite.c

早期freebsd实现

				ip->cury = min(ip->pos, ip->rows-1);
				ip->pos = 0;
				ip->escape = 0;
				ite_movecursor(ip, sp);
				clr_attr(ip, ATTR_INV);
				break;

			case 'y':			/* y coord first */
				ip->cury = min(ip->pos, ip->rows-1);
				ip->pos = 0;
				ip->fpd = 0;
				break;

			case 'C':			/* x coord */
				ip->curx = min(ip->pos, ip->cols-1);
				ip->pos = 0;
				ip->escape = 0;
				ite_movecursor(ip, sp);
				clr_attr(ip, ATTR_INV);
				break;

			default:	     /* Possibly a 3 digit number. */
				if (c >= '0' && c <= '9' && ip->fpd < 3) {
					ip->pos = ip->pos * 10 + (c - '0');
					ip->fpd++;
				} else {
					ip->pos = 0;
					ip->escape = 0;
				}
				break;
			}
			return;

		case 'd':				/* attribute change */
			switch (c) {

			case 'B':
				set_attr(ip, ATTR_INV);
				break;
		        case 'D':
				/* XXX: we don't do anything for underline */
				set_attr(ip, ATTR_UL);
				break;
		        case '@':
				clr_attr(ip, ATTR_ALL);
				break;
			}
			ip->escape = 0;
			return;

		case 's':				/* keypad control */
			switch (ip->fpd) {

			case 0:
				ip->hold = c;
				ip->fpd++;
				return;

			case 1:
				if (c == 'A') {
					switch (ip->hold) {
	
					case '0':
						clr_attr(ip, ATTR_KPAD);
						break;
					case '1':
						set_attr(ip, ATTR_KPAD);
						break;
					}
				}
				ip->hold = 0;
			}
			ip->escape = 0;
			return;

		case 'i':			/* back tab */
			if (ip->curx > TABSIZE) {
				n = ip->curx - (ip->curx & (TABSIZE - 1));
				ip->curx -= n;
			} else
				ip->curx = 0;
			ite_movecursor(ip, sp);
			ip->escape = 0;
			return;

		case '3':			/* clear all tabs */
			goto ignore;

		case 'K':			/* clear_eol */
			ite_clrtoeol(ip, sp, ip->cury, ip->curx);
			ip->escape = 0;
			return;

		case 'J':			/* clear_eos */
			ite_clrtoeos(ip, sp);
			ip->escape = 0;
			return;

		case 'B':			/* cursor down 1 line */
			if (++ip->cury == ip->rows) {
				--ip->cury;
				ite_erasecursor(ip, sp);
				(*sp->ite_scroll)(ip, 1, 0, 1, SCROLL_UP);
				ite_clrtoeol(ip, sp, ip->cury, 0);
			}
			else
				ite_movecursor(ip, sp);
			clr_attr(ip, ATTR_INV);
			ip->escape = 0;
			return;

		case 'C':			/* cursor forward 1 char */
			ip->escape = 0;
			itecheckwrap(ip, sp);
			return;

		case 'A':			/* cursor up 1 line */
			if (ip->cury > 0) {
				ip->cury--;
				ite_movecursor(ip, sp);
			}
			ip->escape = 0;
			clr_attr(ip, ATTR_INV);
			return;

		case 'P':			/* delete character */
			ite_dchar(ip, sp);
			ip->escape = 0;
			return;

		case 'M':			/* delete line */
			ite_dline(ip, sp);
			ip->escape = 0;
			return;

		case 'Q':			/* enter insert mode */
			ip->imode = 1;
			ip->escape = 0;
			return;

		case 'R':			/* exit insert mode */
			ip->imode = 0;
			ip->escape = 0;
			return;

		case 'L':			/* insert blank line */
			ite_iline(ip, sp);
			ip->escape = 0;
			return;

		case 'h':			/* home key */
			ip->cury = ip->curx = 0;
			ite_movecursor(ip, sp);
			ip->escape = 0;
			return;

		case 'D':			/* left arrow key */
			if (ip->curx > 0) {
				ip->curx--;
				ite_movecursor(ip, sp);
			}
			ip->escape = 0;
			return;

		case '1':			/* set tab in all rows */
			goto ignore;

		case ESC:
			if ((ip->escape = c) == ESC)
				break;
			ip->fpd = 0;
			goto doesc;

		default:
ignore:
			ip->escape = 0;
			return;

		}
	}

	switch (c &= 0x7F) {

	case '\n':

		if (++ip->cury == ip->rows) {
			--ip->cury;
			ite_erasecursor(ip, sp);
			(*sp->ite_scroll)(ip, 1, 0, 1, SCROLL_UP);
			ite_clrtoeol(ip, sp, ip->cury, 0);
		} else
			ite_movecursor(ip, sp);
		clr_attr(ip, ATTR_INV);
		break;

	case '\r':
		if (ip->curx) {
			ip->curx = 0;
			ite_movecursor(ip, sp);
		}
		break;
	
	case '\b':
		if (--ip->curx < 0)
			ip->curx = 0;
		else
			ite_movecursor(ip, sp);
		break;

	case '\t':
		if (ip->curx < TABEND(unit)) {
			n = TABSIZE - (ip->curx & (TABSIZE - 1));
			ip->curx += n;
			ite_movecursor(ip, sp);
		} else
			itecheckwrap(ip, sp);
		break;

	case CTRL('G'):
		if (&ite_tty[unit] == kbd_tty)
			kbdbell(unit);
		break;

	case ESC:
		ip->escape = ESC;
		break;

	default:
		if (c < ' ' || c == DEL)
			break;
		if (ip->imode)
			ite_ichar(ip, sp);
		if ((ip->attribute & ATTR_INV) || attrtest(ip, ATTR_INV)) {
			attrset(ip, ATTR_INV);
			(*sp->ite_putc)(ip, c, ip->cury, ip->curx, ATTR_INV);
		} else
			(*sp->ite_putc)(ip, c, ip->cury, ip->curx, ATTR_NOR);
		ite_drawcursor(ip, sp);
		itecheckwrap(ip, sp);
		break;
	}
}

itecheckwrap(ip, sp)
     register struct ite_softc *ip;
     register struct itesw *sp;
{
	if (++ip->curx == ip->cols) {
		ip->curx = 0;
		clr_attr(ip, ATTR_INV);
		if (++ip->cury == ip->rows) {
			--ip->cury;
			ite_erasecursor(ip, sp);
			(*sp->ite_scroll)(ip, 1, 0, 1, SCROLL_UP);
			ite_clrtoeol(ip, sp, ip->cury, 0);
			return;
		}
	}
	ite_movecursor(ip, sp);
}

ite_dchar(ip, sp)
     register struct ite_softc *ip;
     register struct itesw *sp;
{
	if (ip->curx < ip->cols - 1) {
		ite_erasecursor(ip, sp);
		(*sp->ite_scroll)(ip, ip->cury, ip->curx + 1, 1, SCROLL_LEFT);
		attrmov(ip, ip->cury, ip->curx + 1, ip->cury, ip->curx,
			1, ip->cols - ip->curx - 1);
	}
	attrclr(ip, ip->cury, ip->cols - 1, 1, 1);
	(*sp->ite_putc)(ip, ' ', ip->cury, ip->cols - 1, ATTR_NOR);
	ite_drawcursor(ip, sp);
}

ite_ichar(ip, sp)
     register struct ite_softc *ip;
     register struct itesw *sp;
{
	if (ip->curx < ip->cols - 1) {
		ite_erasecursor(ip, sp);
		(*sp->ite_scroll)(ip, ip->cury, ip->curx, 1, SCROLL_RIGHT);
		attrmov(ip, ip->cury, ip->curx, ip->cury, ip->curx + 1,
			1, ip->cols - ip->curx - 1);
	}
	attrclr(ip, ip->cury, ip->curx, 1, 1);
	(*sp->ite_putc)(ip, ' ', ip->cury, ip->curx, ATTR_NOR);
	ite_drawcursor(ip, sp);
}

ite_dline(ip, sp)
     register struct ite_softc *ip;
     register struct itesw *sp;
{
	if (ip->cury < ip->rows - 1) {
		ite_erasecursor(ip, sp);
		(*sp->ite_scroll)(ip, ip->cury + 1, 0, 1, SCROLL_UP);
		attrmov(ip, ip->cury + 1, 0, ip->cury, 0,
			ip->rows - ip->cury - 1, ip->cols);
	}
	ite_clrtoeol(ip, sp, ip->rows - 1, 0);
}

ite_iline(ip, sp)
     register struct ite_softc *ip;
     register struct itesw *sp;
{
	if (ip->cury < ip->rows - 1) {
		ite_erasecursor(ip, sp);
		(*sp->ite_scroll)(ip, ip->cury, 0, 1, SCROLL_DOWN);
		attrmov(ip, ip->cury, 0, ip->cury + 1, 0,
			ip->rows - ip->cury - 1, ip->cols);
	}
	ite_clrtoeol(ip, sp, ip->cury, 0);
}

ite_clrtoeol(ip, sp, y, x)
     register struct ite_softc *ip;
     register struct itesw *sp;
     register int y, x;
{
	(*sp->ite_clear)(ip, y, x, 1, ip->cols - x);
	attrclr(ip, y, x, 1, ip->cols - x);
	ite_drawcursor(ip, sp);
}

ite_clrtoeos(ip, sp)
     register struct ite_softc *ip;
     register struct itesw *sp;
{
	(*sp->ite_clear)(ip, ip->cury, 0, ip->rows - ip->cury, ip->cols);
	attrclr(ip, ip->cury, 0, ip->rows - ip->cury, ip->cols);
	ite_drawcursor(ip, sp);
}

/*
 * Console functions
 */
#include <hp/dev/cons.h>
#ifdef hp300
#include <hp/dev/grfreg.h>
#endif

#ifdef DEBUG
/*
 * Minimum ITE number at which to start looking for a console.
 * Setting to 0 will do normal search, 1 will skip first ITE device,
 * NITE will skip ITEs and use serial port.
 */
int	whichconsole = 0;
#endif

itecnprobe(cp)
	struct consdev *cp;
{
	register struct ite_softc *ip;
	int i, sw, maj, unit, pri;

	/* locate the major number */
	for (maj = 0; maj < nchrdev; maj++)
		if (cdevsw[maj].d_open == iteopen)
			break;

	/* urk! */
	grfconfig();

	/* check all the individual displays and find the best */
	unit = -1;
	pri = CN_DEAD;
	for (i = 0; i < NITE; i++) {
		struct grf_softc *gp = &grf_softc[i];

		ip = &ite_softc[i];
		if ((gp->g_flags & GF_ALIVE) == 0)
			continue;
		ip->flags = (ITE_ALIVE|ITE_CONSOLE);

		/* locate the proper switch table. */
		for (sw = 0; sw < nitesw; sw++)
			if (itesw[sw].ite_hwid == gp->g_sw->gd_hwid)
				break;

		if (sw == nitesw)
			continue;
#ifdef DEBUG
		if (i < whichconsole)
			continue;
#endif
		ip->isw = &itesw[sw];
		ip->grf = gp;
#ifdef hp300
		if ((int)gp->g_display.gd_regaddr == GRFIADDR) {
			pri = CN_INTERNAL;
			unit = i;
		} else if (unit < 0) {
			pri = CN_NORMAL;
			unit = i;
		}
#endif
#ifdef hp800
		/* XXX use the first one for now */
		if (unit < 0) {
			pri = CN_INTERNAL;
			unit = i;
		}
#endif
	}

	/* initialize required fields */
	cp->cn_dev = makedev(maj, unit);
	cp->cn_tp = &ite_tty[unit];
	cp->cn_pri = pri;
}

itecninit(cp)
	struct consdev *cp;
{
	int unit = UNIT(cp->cn_dev);
	struct ite_softc *ip = &ite_softc[unit];

	ip->attrbuf = console_attributes;
	iteinit(cp->cn_dev);
	ip->flags |= (ITE_ACTIVE|ITE_ISCONS);
	kbd_tty = &ite_tty[unit];
}

/*ARGSUSED*/
itecngetc(dev)
	dev_t dev;
{
	register int c;
	int stat;

	c = kbdgetc(0, &stat);	/* XXX always read from keyboard 0 for now */
	switch ((stat >> KBD_SSHIFT) & KBD_SMASK) {
	case KBD_SHIFT:
		c = kbd_shiftmap[c & KBD_CHARMASK];
		break;
	case KBD_CTRL:
		c = kbd_ctrlmap[c & KBD_CHARMASK];
		break;
	case KBD_KEY:
		c = kbd_keymap[c & KBD_CHARMASK];
		break;
	default:
		c = 0;
		break;
	}
	return(c);
}

itecnputc(dev, c)
	dev_t dev;
	int c;
{
	static int paniced = 0;
	struct ite_softc *ip = &ite_softc[UNIT(dev)];

	if (panicstr && !paniced &&
	    (ip->flags & (ITE_ACTIVE|ITE_INGRF)) != ITE_ACTIVE) {
		(void) iteon(dev, 3);
		paniced = 1;
	}
	iteputchar(c, dev);
}
#endif