| 1 | /* $NetBSD: wsemul_dumb.c,v 1.15 2010/01/28 22:36:19 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 | #include <sys/cdefs.h> |
| 34 | __KERNEL_RCSID(0, "$NetBSD: wsemul_dumb.c,v 1.15 2010/01/28 22:36:19 drochner Exp $" ); |
| 35 | |
| 36 | #include <sys/param.h> |
| 37 | #include <sys/systm.h> |
| 38 | #include <sys/time.h> |
| 39 | #include <sys/malloc.h> |
| 40 | #include <sys/fcntl.h> |
| 41 | |
| 42 | #include <dev/wscons/wsconsio.h> |
| 43 | #include <dev/wscons/wsdisplayvar.h> |
| 44 | #include <dev/wscons/wsemulvar.h> |
| 45 | #include <dev/wscons/ascii.h> |
| 46 | #include <dev/wscons/wsksymdef.h> |
| 47 | |
| 48 | void *wsemul_dumb_cnattach(const struct wsscreen_descr *, void *, |
| 49 | int, int, long); |
| 50 | void *wsemul_dumb_attach(int console, const struct wsscreen_descr *, |
| 51 | void *, int, int, void *, long); |
| 52 | void wsemul_dumb_output(void *cookie, const u_char *data, u_int count, int); |
| 53 | int wsemul_dumb_translate(void *cookie, keysym_t, const char **); |
| 54 | void wsemul_dumb_detach(void *cookie, u_int *crowp, u_int *ccolp); |
| 55 | void wsemul_dumb_resetop(void *, enum wsemul_resetops); |
| 56 | |
| 57 | const struct wsemul_ops wsemul_dumb_ops = { |
| 58 | "dumb" , |
| 59 | wsemul_dumb_cnattach, |
| 60 | wsemul_dumb_attach, |
| 61 | wsemul_dumb_output, |
| 62 | wsemul_dumb_translate, |
| 63 | wsemul_dumb_detach, |
| 64 | wsemul_dumb_resetop, |
| 65 | NULL, /* getmsgattrs */ |
| 66 | NULL, /* setmsgattrs */ |
| 67 | }; |
| 68 | |
| 69 | struct wsemul_dumb_emuldata { |
| 70 | const struct wsdisplay_emulops *emulops; |
| 71 | void *emulcookie; |
| 72 | void *cbcookie; |
| 73 | u_int nrows, ncols, crow, ccol; |
| 74 | long defattr; |
| 75 | }; |
| 76 | |
| 77 | struct wsemul_dumb_emuldata wsemul_dumb_console_emuldata; |
| 78 | |
| 79 | void * |
| 80 | wsemul_dumb_cnattach(const struct wsscreen_descr *type, void *cookie, |
| 81 | int ccol, int crow, long defattr) |
| 82 | { |
| 83 | struct wsemul_dumb_emuldata *edp; |
| 84 | |
| 85 | edp = &wsemul_dumb_console_emuldata; |
| 86 | |
| 87 | edp->emulops = type->textops; |
| 88 | edp->emulcookie = cookie; |
| 89 | edp->nrows = type->nrows; |
| 90 | edp->ncols = type->ncols; |
| 91 | edp->crow = crow; |
| 92 | edp->ccol = ccol; |
| 93 | edp->defattr = defattr; |
| 94 | edp->cbcookie = NULL; |
| 95 | |
| 96 | return (edp); |
| 97 | } |
| 98 | |
| 99 | void * |
| 100 | wsemul_dumb_attach(int console, const struct wsscreen_descr *type, |
| 101 | void *cookie, int ccol, int crow, void *cbcookie, long defattr) |
| 102 | { |
| 103 | struct wsemul_dumb_emuldata *edp; |
| 104 | |
| 105 | if (console) |
| 106 | edp = &wsemul_dumb_console_emuldata; |
| 107 | else { |
| 108 | edp = malloc(sizeof *edp, M_DEVBUF, M_WAITOK); |
| 109 | |
| 110 | edp->emulops = type->textops; |
| 111 | edp->emulcookie = cookie; |
| 112 | edp->nrows = type->nrows; |
| 113 | edp->ncols = type->ncols; |
| 114 | edp->crow = crow; |
| 115 | edp->ccol = ccol; |
| 116 | edp->defattr = defattr; |
| 117 | } |
| 118 | |
| 119 | edp->cbcookie = cbcookie; |
| 120 | |
| 121 | return (edp); |
| 122 | } |
| 123 | |
| 124 | void |
| 125 | wsemul_dumb_output(void *cookie, const u_char *data, u_int count, |
| 126 | int kernel) |
| 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, edp->defattr); |
| 155 | edp->ccol += n; |
| 156 | break; |
| 157 | |
| 158 | case ASCII_FF: |
| 159 | (*edp->emulops->eraserows)(edp->emulcookie, 0, |
| 160 | edp->nrows, edp->defattr); |
| 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->putchar)(edp->emulcookie, edp->crow, |
| 172 | edp->ccol, c, edp->defattr); |
| 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, edp->defattr); |
| 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 | int |
| 204 | wsemul_dumb_translate(void *cookie, keysym_t in, |
| 205 | const char **out) |
| 206 | { |
| 207 | static char c; |
| 208 | |
| 209 | if (KS_GROUP(in) == KS_GROUP_Plain) { |
| 210 | /* allow ISO-1 */ |
| 211 | c = KS_VALUE(in); |
| 212 | *out = &c; |
| 213 | return (1); |
| 214 | } |
| 215 | return (0); |
| 216 | } |
| 217 | |
| 218 | void |
| 219 | wsemul_dumb_detach(void *cookie, u_int *crowp, u_int *ccolp) |
| 220 | { |
| 221 | struct wsemul_dumb_emuldata *edp = cookie; |
| 222 | |
| 223 | *crowp = edp->crow; |
| 224 | *ccolp = edp->ccol; |
| 225 | if (edp != &wsemul_dumb_console_emuldata) |
| 226 | free(edp, M_DEVBUF); |
| 227 | } |
| 228 | |
| 229 | void |
| 230 | wsemul_dumb_resetop(void *cookie, enum wsemul_resetops op) |
| 231 | { |
| 232 | struct wsemul_dumb_emuldata *edp = cookie; |
| 233 | |
| 234 | switch (op) { |
| 235 | case WSEMUL_CLEARSCREEN: |
| 236 | (*edp->emulops->eraserows)(edp->emulcookie, 0, edp->nrows, |
| 237 | edp->defattr); |
| 238 | edp->ccol = edp->crow = 0; |
| 239 | (*edp->emulops->cursor)(edp->emulcookie, 1, 0, 0); |
| 240 | break; |
| 241 | default: |
| 242 | break; |
| 243 | } |
| 244 | } |
| 245 | |