wsemul_dumb.c revision 1.1
1 /* $NetBSD: wsemul_dumb.c,v 1.1 1998/03/22 14:24:03 drochner Exp $ */ 2 3 /* 4 * Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Christopher G. Demetriou 17 * for the NetBSD Project. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 static const char _copyright[] __attribute__ ((unused)) = 34 "Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved."; 35 static const char _rcsid[] __attribute__ ((unused)) = 36 "$NetBSD: wsemul_dumb.c,v 1.1 1998/03/22 14:24:03 drochner Exp $"; 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/time.h> 41 #include <sys/malloc.h> 42 #include <sys/fcntl.h> 43 44 #include <dev/wscons/wsconsio.h> 45 #include <dev/wscons/wsdisplayvar.h> 46 #include <dev/wscons/wsemulvar.h> 47 #include <dev/wscons/ascii.h> 48 49 void *wsemul_dumb_cnattach __P((const struct wsscreen_descr *, void *, 50 int, int)); 51 void *wsemul_dumb_attach __P((int console, const struct wsscreen_descr *, 52 void *, int, int, void *)); 53 void wsemul_dumb_output __P((void *cookie, const u_char *data, u_int count)); 54 void wsemul_dumb_detach __P((void *cookie, u_int *crowp, u_int *ccolp)); 55 56 const struct wsemul_ops wsemul_dumb_ops = { 57 "dumb", 58 wsemul_dumb_cnattach, 59 wsemul_dumb_attach, 60 wsemul_dumb_output, 61 wsemul_dumb_detach, 62 }; 63 64 struct wsemul_dumb_emuldata { 65 const struct wsdisplay_emulops *emulops; 66 void *emulcookie; 67 void *cbcookie; 68 u_int nrows, ncols, crow, ccol; 69 }; 70 71 struct wsemul_dumb_emuldata wsemul_dumb_console_emuldata; 72 73 void * 74 wsemul_dumb_cnattach(type, cookie, ccol, crow) 75 const struct wsscreen_descr *type; 76 void *cookie; 77 int ccol, crow; 78 { 79 struct wsemul_dumb_emuldata *edp; 80 81 edp = &wsemul_dumb_console_emuldata; 82 83 edp->emulops = type->textops; 84 edp->emulcookie = cookie; 85 edp->nrows = type->nrows; 86 edp->ncols = type->ncols; 87 edp->crow = crow; 88 edp->ccol = ccol; 89 edp->cbcookie = NULL; 90 91 return (edp); 92 } 93 94 void * 95 wsemul_dumb_attach(console, type, cookie, ccol, crow, cbcookie) 96 int console; 97 const struct wsscreen_descr *type; 98 void *cookie; 99 int ccol, crow; 100 void *cbcookie; 101 { 102 struct wsemul_dumb_emuldata *edp; 103 104 if (console) 105 edp = &wsemul_dumb_console_emuldata; 106 else { 107 edp = malloc(sizeof *edp, M_DEVBUF, M_WAITOK); 108 109 edp->emulops = type->textops; 110 edp->emulcookie = cookie; 111 edp->nrows = type->nrows; 112 edp->ncols = type->ncols; 113 edp->crow = crow; 114 edp->ccol = ccol; 115 } 116 117 edp->cbcookie = cbcookie; 118 119 return (edp); 120 } 121 122 void 123 wsemul_dumb_output(cookie, data, count) 124 void *cookie; 125 const u_char *data; 126 u_int count; 127 { 128 struct wsemul_dumb_emuldata *edp = cookie; 129 u_char c; 130 int n; 131 132 /* XXX */ 133 (*edp->emulops->cursor)(edp->emulcookie, 0, edp->crow, edp->ccol); 134 while (count-- > 0) { 135 c = *data++; 136 switch (c) { 137 case ASCII_BEL: 138 wsdisplay_emulbell(edp->cbcookie); 139 break; 140 141 case ASCII_BS: 142 if (edp->ccol > 0) 143 edp->ccol--; 144 break; 145 146 case ASCII_CR: 147 edp->ccol = 0; 148 break; 149 150 case ASCII_HT: 151 n = min(8 - (edp->ccol & 7), 152 edp->ncols - edp->ccol - 1); 153 (*edp->emulops->erasecols)(edp->emulcookie, 154 edp->crow, edp->ccol, n); 155 edp->ccol += n; 156 break; 157 158 case ASCII_NP: 159 (*edp->emulops->eraserows)(edp->emulcookie, 0, 160 edp->nrows); 161 edp->ccol = 0; 162 edp->crow = 0; 163 break; 164 165 case ASCII_VT: 166 if (edp->crow > 0) 167 edp->crow--; 168 break; 169 170 default: 171 (*edp->emulops->putstr)(edp->emulcookie, edp->crow, 172 edp->ccol, &c, 1); 173 edp->ccol++; 174 175 /* if cur col is still on cur line, done. */ 176 if (edp->ccol < edp->ncols) 177 break; 178 179 /* wrap the column around. */ 180 edp->ccol = 0; 181 182 /* FALLTHRU */ 183 184 case ASCII_LF: 185 /* if the cur line isn't the last, incr and leave. */ 186 if (edp->crow < edp->nrows - 1) { 187 edp->crow++; 188 break; 189 } 190 n = 1; /* number of lines to scroll */ 191 (*edp->emulops->copyrows)(edp->emulcookie, n, 0, 192 edp->nrows - n); 193 (*edp->emulops->eraserows)(edp->emulcookie, 194 edp->nrows - n, n); 195 edp->crow -= n - 1; 196 break; 197 } 198 } 199 /* XXX */ 200 (*edp->emulops->cursor)(edp->emulcookie, 1, edp->crow, edp->ccol); 201 } 202 203 void 204 wsemul_dumb_detach(cookie, crowp, ccolp) 205 void *cookie; 206 u_int *crowp, *ccolp; 207 { 208 struct wsemul_dumb_emuldata *edp = cookie; 209 210 *crowp = edp->crow; 211 *ccolp = edp->ccol; 212 if (edp != &wsemul_dumb_console_emuldata) 213 free(edp, M_DEVBUF); 214 } 215
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