/* $NetBSD: wsemul_dumb.c,v 1.16 2017/05/19 19:22:33 macallan Exp $ */ /* * Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou * for the NetBSD Project. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: wsemul_dumb.c,v 1.16 2017/05/19 19:22:33 macallan Exp $"); #include #include #include #include #include #include #include #include #include #include void *wsemul_dumb_cnattach(const struct wsscreen_descr *, void *, int, int, long); void *wsemul_dumb_attach(int console, const struct wsscreen_descr *, void *, int, int, void *, long); void wsemul_dumb_output(void *cookie, const u_char *data, u_int count, int); int wsemul_dumb_translate(void *cookie, keysym_t, const char **); void wsemul_dumb_detach(void *cookie, u_int *crowp, u_int *ccolp); void wsemul_dumb_resetop(void *, enum wsemul_resetops); const struct wsemul_ops wsemul_dumb_ops = { "dumb", wsemul_dumb_cnattach, wsemul_dumb_attach, wsemul_dumb_output, wsemul_dumb_translate, wsemul_dumb_detach, wsemul_dumb_resetop, NULL, /* getmsgattrs */ NULL, /* setmsgattrs */ NULL /* resize */ }; struct wsemul_dumb_emuldata { const struct wsdisplay_emulops *emulops; void *emulcookie; void *cbcookie; u_int nrows, ncols, crow, ccol; long defattr; }; struct wsemul_dumb_emuldata wsemul_dumb_console_emuldata; void * wsemul_dumb_cnattach(const struct wsscreen_descr *type, void *cookie, int ccol, int crow, long defattr) { struct wsemul_dumb_emuldata *edp; edp = &wsemul_dumb_console_emuldata; edp->emulops = type->textops; edp->emulcookie = cookie; edp->nrows = type->nrows; edp->ncols = type->ncols; edp->crow = crow; edp->ccol = ccol; edp->defattr = defattr; edp->cbcookie = NULL; return (edp); } void * wsemul_dumb_attach(int console, const struct wsscreen_descr *type, void *cookie, int ccol, int crow, void *cbcookie, long defattr) { struct wsemul_dumb_emuldata *edp; if (console) edp = &wsemul_dumb_console_emuldata; else { edp = malloc(sizeof *edp, M_DEVBUF, M_WAITOK); edp->emulops = type->textops; edp->emulcookie = cookie; edp->nrows = type->nrows; edp->ncols = type->ncols; edp->crow = crow; edp->ccol = ccol; edp->defattr = defattr; } edp->cbcookie = cbcookie; return (edp); } void wsemul_dumb_output(void *cookie, const u_char *data, u_int count, int kernel) { struct wsemul_dumb_emuldata *edp = cookie; u_char c; int n; /* XXX */ (*edp->emulops->cursor)(edp->emulcookie, 0, edp->crow, edp->ccol); while (count-- > 0) { c = *data++; switch (c) { case ASCII_BEL: wsdisplay_emulbell(edp->cbcookie); break; case ASCII_BS: if (edp->ccol > 0) edp->ccol--; break; case ASCII_CR: edp->ccol = 0; break; case ASCII_HT: n = min(8 - (edp->ccol & 7), edp->ncols - edp->ccol - 1); (*edp->emulops->erasecols)(edp->emulcookie, edp->crow, edp->ccol, n, edp->defattr); edp->ccol += n; break; case ASCII_FF: (*edp->emulops->eraserows)(edp->emulcookie, 0, edp->nrows, edp->defattr); edp->ccol = 0; edp->crow = 0; break; case ASCII_VT: if (edp->crow > 0) edp->crow--; break; default: (*edp->emulops->putchar)(edp->emulcookie, edp->crow, edp->ccol, c, edp->defattr); edp->ccol++; /* if cur col is still on cur line, done. */ if (edp->ccol < edp->ncols) break; /* wrap the column around. */ edp->ccol = 0; /* FALLTHRU */ case ASCII_LF: /* if the cur line isn't the last, incr and leave. */ if (edp->crow < edp->nrows - 1) { edp->crow++; break; } n = 1; /* number of lines to scroll */ (*edp->emulops->copyrows)(edp->emulcookie, n, 0, edp->nrows - n); (*edp->emulops->eraserows)(edp->emulcookie, edp->nrows - n, n, edp->defattr); edp->crow -= n - 1; break; } } /* XXX */ (*edp->emulops->cursor)(edp->emulcookie, 1, edp->crow, edp->ccol); } int wsemul_dumb_translate(void *cookie, keysym_t in, const char **out) { static char c; if (KS_GROUP(in) == KS_GROUP_Plain) { /* allow ISO-1 */ c = KS_VALUE(in); *out = &c; return (1); } return (0); } void wsemul_dumb_detach(void *cookie, u_int *crowp, u_int *ccolp) { struct wsemul_dumb_emuldata *edp = cookie; *crowp = edp->crow; *ccolp = edp->ccol; if (edp != &wsemul_dumb_console_emuldata) free(edp, M_DEVBUF); } void wsemul_dumb_resetop(void *cookie, enum wsemul_resetops op) { struct wsemul_dumb_emuldata *edp = cookie; switch (op) { case WSEMUL_CLEARSCREEN: (*edp->emulops->eraserows)(edp->emulcookie, 0, edp->nrows, edp->defattr); edp->ccol = edp->crow = 0; (*edp->emulops->cursor)(edp->emulcookie, 1, 0, 0); break; default: break; } }