233 lines
6.1 KiB
C
233 lines
6.1 KiB
C
/* $NetBSD: wsemul_dumb.c,v 1.8 2001/10/13 15:56:15 augustss Exp $ */
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/*
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* Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: wsemul_dumb.c,v 1.8 2001/10/13 15:56:15 augustss Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <sys/malloc.h>
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#include <sys/fcntl.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/wscons/wsdisplayvar.h>
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#include <dev/wscons/wsemulvar.h>
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#include <dev/wscons/ascii.h>
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void *wsemul_dumb_cnattach(const struct wsscreen_descr *, void *,
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int, int, long);
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void *wsemul_dumb_attach(int console, const struct wsscreen_descr *,
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void *, int, int, void *, long);
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void wsemul_dumb_output(void *cookie, const u_char *data, u_int count, int);
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int wsemul_dumb_translate(void *cookie, keysym_t, char **);
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void wsemul_dumb_detach(void *cookie, u_int *crowp, u_int *ccolp);
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void wsemul_dumb_resetop(void *, enum wsemul_resetops);
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const struct wsemul_ops wsemul_dumb_ops = {
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"dumb",
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wsemul_dumb_cnattach,
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wsemul_dumb_attach,
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wsemul_dumb_output,
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wsemul_dumb_translate,
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wsemul_dumb_detach,
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wsemul_dumb_resetop
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};
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struct wsemul_dumb_emuldata {
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const struct wsdisplay_emulops *emulops;
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void *emulcookie;
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void *cbcookie;
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u_int nrows, ncols, crow, ccol;
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long defattr;
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};
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struct wsemul_dumb_emuldata wsemul_dumb_console_emuldata;
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void *
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wsemul_dumb_cnattach(const struct wsscreen_descr *type, void *cookie,
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int ccol, int crow, long defattr)
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{
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struct wsemul_dumb_emuldata *edp;
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edp = &wsemul_dumb_console_emuldata;
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edp->emulops = type->textops;
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edp->emulcookie = cookie;
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edp->nrows = type->nrows;
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edp->ncols = type->ncols;
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edp->crow = crow;
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edp->ccol = ccol;
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edp->defattr = defattr;
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edp->cbcookie = NULL;
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return (edp);
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}
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void *
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wsemul_dumb_attach(int console, const struct wsscreen_descr *type,
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void *cookie, int ccol, int crow, void *cbcookie, long defattr)
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{
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struct wsemul_dumb_emuldata *edp;
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if (console)
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edp = &wsemul_dumb_console_emuldata;
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else {
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edp = malloc(sizeof *edp, M_DEVBUF, M_WAITOK);
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edp->emulops = type->textops;
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edp->emulcookie = cookie;
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edp->nrows = type->nrows;
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edp->ncols = type->ncols;
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edp->crow = crow;
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edp->ccol = ccol;
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edp->defattr = defattr;
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}
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edp->cbcookie = cbcookie;
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return (edp);
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}
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void
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wsemul_dumb_output(void *cookie, const u_char *data, u_int count,
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int kernel /* ignored */)
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{
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struct wsemul_dumb_emuldata *edp = cookie;
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u_char c;
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int n;
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/* XXX */
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(*edp->emulops->cursor)(edp->emulcookie, 0, edp->crow, edp->ccol);
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while (count-- > 0) {
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c = *data++;
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switch (c) {
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case ASCII_BEL:
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wsdisplay_emulbell(edp->cbcookie);
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break;
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case ASCII_BS:
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if (edp->ccol > 0)
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edp->ccol--;
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break;
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case ASCII_CR:
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edp->ccol = 0;
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break;
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case ASCII_HT:
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n = min(8 - (edp->ccol & 7),
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edp->ncols - edp->ccol - 1);
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(*edp->emulops->erasecols)(edp->emulcookie,
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edp->crow, edp->ccol, n, edp->defattr);
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edp->ccol += n;
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break;
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case ASCII_FF:
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(*edp->emulops->eraserows)(edp->emulcookie, 0,
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edp->nrows, edp->defattr);
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edp->ccol = 0;
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edp->crow = 0;
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break;
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case ASCII_VT:
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if (edp->crow > 0)
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edp->crow--;
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break;
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default:
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(*edp->emulops->putchar)(edp->emulcookie, edp->crow,
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edp->ccol, c, edp->defattr);
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edp->ccol++;
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/* if cur col is still on cur line, done. */
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if (edp->ccol < edp->ncols)
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break;
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/* wrap the column around. */
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edp->ccol = 0;
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/* FALLTHRU */
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case ASCII_LF:
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/* if the cur line isn't the last, incr and leave. */
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if (edp->crow < edp->nrows - 1) {
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edp->crow++;
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break;
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}
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n = 1; /* number of lines to scroll */
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(*edp->emulops->copyrows)(edp->emulcookie, n, 0,
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edp->nrows - n);
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(*edp->emulops->eraserows)(edp->emulcookie,
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edp->nrows - n, n, edp->defattr);
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edp->crow -= n - 1;
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break;
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}
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}
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/* XXX */
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(*edp->emulops->cursor)(edp->emulcookie, 1, edp->crow, edp->ccol);
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}
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int
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wsemul_dumb_translate(void *cookie, keysym_t in, char **out)
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{
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return (0);
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}
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void
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wsemul_dumb_detach(void *cookie, u_int *crowp, u_int *ccolp)
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{
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struct wsemul_dumb_emuldata *edp = cookie;
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*crowp = edp->crow;
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*ccolp = edp->ccol;
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if (edp != &wsemul_dumb_console_emuldata)
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free(edp, M_DEVBUF);
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}
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void
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wsemul_dumb_resetop(void *cookie, enum wsemul_resetops op)
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{
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struct wsemul_dumb_emuldata *edp = cookie;
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switch (op) {
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case WSEMUL_CLEARSCREEN:
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(*edp->emulops->eraserows)(edp->emulcookie, 0, edp->nrows,
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edp->defattr);
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edp->ccol = edp->crow = 0;
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(*edp->emulops->cursor)(edp->emulcookie, 1, 0, 0);
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break;
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default:
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break;
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}
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}
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