27 */
28
29#ifndef _DEV_SYSCONS_SCTERMVAR_H_
30#define _DEV_SYSCONS_SCTERMVAR_H_
31
32/*
33 * building blocks for terminal emulator modules.
34 */
35
36static __inline void sc_term_ins_line(scr_stat *scp, int y, int n, int ch,
37 int attr, int tail);
38static __inline void sc_term_del_line(scr_stat *scp, int y, int n, int ch,
39 int attr, int tail);
40static __inline void sc_term_ins_char(scr_stat *scp, int n, int ch,
41 int attr);
42static __inline void sc_term_del_char(scr_stat *scp, int n, int ch,
43 int attr);
44static __inline void sc_term_col(scr_stat *scp, int n);
45static __inline void sc_term_row(scr_stat *scp, int n);
46static __inline void sc_term_up(scr_stat *scp, int n, int head);
47static __inline void sc_term_down(scr_stat *scp, int n, int tail);
48static __inline void sc_term_left(scr_stat *scp, int n);
49static __inline void sc_term_right(scr_stat *scp, int n);
50static __inline void sc_term_up_scroll(scr_stat *scp, int n, int ch,
51 int attr, int head, int tail);
52static __inline void sc_term_down_scroll(scr_stat *scp, int n, int ch,
53 int attr, int head, int tail);
54static __inline void sc_term_clr_eos(scr_stat *scp, int n, int ch, int attr);
55static __inline void sc_term_clr_eol(scr_stat *scp, int n, int ch, int attr);
56static __inline void sc_term_tab(scr_stat *scp, int n);
57static __inline void sc_term_backtab(scr_stat *scp, int n);
58static __inline void sc_term_respond(scr_stat *scp, u_char *s);
59static __inline void sc_term_gen_print(scr_stat *scp, u_char **buf, int *len,
60 int attr);
61static __inline void sc_term_gen_scroll(scr_stat *scp, int ch, int attr);
62
63static __inline void
64sc_term_ins_line(scr_stat *scp, int y, int n, int ch, int attr, int tail)
65{
66 if (tail <= 0)
67 tail = scp->ysize;
68 if (n < 1)
69 n = 1;
70 if (n > tail - y)
71 n = tail - y;
72 sc_vtb_ins(&scp->vtb, y*scp->xsize, n*scp->xsize, ch, attr);
73 mark_for_update(scp, y*scp->xsize);
74 mark_for_update(scp, scp->xsize*tail - 1);
75}
76
77static __inline void
78sc_term_del_line(scr_stat *scp, int y, int n, int ch, int attr, int tail)
79{
80 if (tail <= 0)
81 tail = scp->ysize;
82 if (n < 1)
83 n = 1;
84 if (n > tail - y)
85 n = tail - y;
86 sc_vtb_delete(&scp->vtb, y*scp->xsize, n*scp->xsize, ch, attr);
87 mark_for_update(scp, y*scp->xsize);
88 mark_for_update(scp, scp->xsize*tail - 1);
89}
90
91static __inline void
92sc_term_ins_char(scr_stat *scp, int n, int ch, int attr)
93{
94 int count;
95
96 if (n < 1)
97 n = 1;
98 if (n > scp->xsize - scp->xpos)
99 n = scp->xsize - scp->xpos;
100 count = scp->xsize - (scp->xpos + n);
101 sc_vtb_move(&scp->vtb, scp->cursor_pos, scp->cursor_pos + n, count);
102 sc_vtb_erase(&scp->vtb, scp->cursor_pos, n, ch, attr);
103 mark_for_update(scp, scp->cursor_pos);
104 mark_for_update(scp, scp->cursor_pos + n + count - 1);
105}
106
107static __inline void
108sc_term_del_char(scr_stat *scp, int n, int ch, int attr)
109{
110 int count;
111
112 if (n < 1)
113 n = 1;
114 if (n > scp->xsize - scp->xpos)
115 n = scp->xsize - scp->xpos;
116 count = scp->xsize - (scp->xpos + n);
117 sc_vtb_move(&scp->vtb, scp->cursor_pos + n, scp->cursor_pos, count);
118 sc_vtb_erase(&scp->vtb, scp->cursor_pos + count, n, ch, attr);
119 mark_for_update(scp, scp->cursor_pos);
120 mark_for_update(scp, scp->cursor_pos + n + count - 1);
121}
122
123static __inline void
124sc_term_col(scr_stat *scp, int n)
125{
126 if (n < 1)
127 n = 1;
128 sc_move_cursor(scp, n - 1, scp->ypos);
129}
130
131static __inline void
132sc_term_row(scr_stat *scp, int n)
133{
134 if (n < 1)
135 n = 1;
136 sc_move_cursor(scp, scp->xpos, n - 1);
137}
138
139static __inline void
140sc_term_up(scr_stat *scp, int n, int head)
141{
142 if (n < 1)
143 n = 1;
144 n = imin(n, scp->ypos - head);
145 if (n <= 0)
146 return;
147 sc_move_cursor(scp, scp->xpos, scp->ypos - n);
148}
149
150static __inline void
151sc_term_down(scr_stat *scp, int n, int tail)
152{
153 if (tail <= 0)
154 tail = scp->ysize;
155 if (n < 1)
156 n = 1;
157 n = imin(n, tail - scp->ypos - 1);
158 if (n <= 0)
159 return;
160 sc_move_cursor(scp, scp->xpos, scp->ypos + n);
161}
162
163static __inline void
164sc_term_left(scr_stat *scp, int n)
165{
166 if (n < 1)
167 n = 1;
168 sc_move_cursor(scp, scp->xpos - n, scp->ypos);
169}
170
171static __inline void
172sc_term_right(scr_stat *scp, int n)
173{
174 if (n < 1)
175 n = 1;
176 sc_move_cursor(scp, scp->xpos + n, scp->ypos);
177}
178
179static __inline void
180sc_term_up_scroll(scr_stat *scp, int n, int ch, int attr, int head, int tail)
181{
182 if (tail <= 0)
183 tail = scp->ysize;
184 if (n < 1)
185 n = 1;
186 if (n <= scp->ypos - head) {
187 sc_move_cursor(scp, scp->xpos, scp->ypos - n);
188 } else {
189 sc_term_ins_line(scp, head, n - (scp->ypos - head),
190 ch, attr, tail);
191 sc_move_cursor(scp, scp->xpos, head);
192 }
193}
194
195static __inline void
196sc_term_down_scroll(scr_stat *scp, int n, int ch, int attr, int head, int tail)
197{
198 if (tail <= 0)
199 tail = scp->ysize;
200 if (n < 1)
201 n = 1;
202 if (n < tail - scp->ypos) {
203 sc_move_cursor(scp, scp->xpos, scp->ypos + n);
204 } else {
205 sc_term_del_line(scp, head, n - (tail - scp->ypos) + 1,
206 ch, attr, tail);
207 sc_move_cursor(scp, scp->xpos, tail - 1);
208 }
209}
210
211static __inline void
212sc_term_clr_eos(scr_stat *scp, int n, int ch, int attr)
213{
214 switch (n) {
215 case 0: /* clear form cursor to end of display */
216 sc_vtb_erase(&scp->vtb, scp->cursor_pos,
217 scp->xsize*scp->ysize - scp->cursor_pos,
218 ch, attr);
219 mark_for_update(scp, scp->cursor_pos);
220 mark_for_update(scp, scp->xsize*scp->ysize - 1);
221 sc_remove_cutmarking(scp);
222 break;
223 case 1: /* clear from beginning of display to cursor */
224 sc_vtb_erase(&scp->vtb, 0, scp->cursor_pos + 1, ch, attr);
225 mark_for_update(scp, 0);
226 mark_for_update(scp, scp->cursor_pos);
227 sc_remove_cutmarking(scp);
228 break;
229 case 2: /* clear entire display */
230 sc_vtb_erase(&scp->vtb, 0, scp->xsize*scp->ysize, ch, attr);
231 mark_for_update(scp, 0);
232 mark_for_update(scp, scp->xsize*scp->ysize - 1);
233 sc_remove_cutmarking(scp);
234 break;
235 }
236}
237
238static __inline void
239sc_term_clr_eol(scr_stat *scp, int n, int ch, int attr)
240{
241 switch (n) {
242 case 0: /* clear form cursor to end of line */
243 sc_vtb_erase(&scp->vtb, scp->cursor_pos,
244 scp->xsize - scp->xpos, ch, attr);
245 mark_for_update(scp, scp->cursor_pos);
246 mark_for_update(scp, scp->cursor_pos +
247 scp->xsize - 1 - scp->xpos);
248 break;
249 case 1: /* clear from beginning of line to cursor */
250 sc_vtb_erase(&scp->vtb, scp->cursor_pos - scp->xpos,
251 scp->xpos + 1, ch, attr);
252 mark_for_update(scp, scp->ypos*scp->xsize);
253 mark_for_update(scp, scp->cursor_pos);
254 break;
255 case 2: /* clear entire line */
256 sc_vtb_erase(&scp->vtb, scp->cursor_pos - scp->xpos,
257 scp->xsize, ch, attr);
258 mark_for_update(scp, scp->ypos*scp->xsize);
259 mark_for_update(scp, (scp->ypos + 1)*scp->xsize - 1);
260 break;
261 }
262}
263
264static __inline void
265sc_term_tab(scr_stat *scp, int n)
266{
267 int i;
268
269 if (n < 1)
270 n = 1;
271 i = (scp->xpos & ~7) + 8*n;
272 if (i >= scp->xsize) {
273 if (scp->ypos >= scp->ysize - 1) {
274 scp->xpos = 0;
275 scp->ypos++;
276 scp->cursor_pos = scp->ypos*scp->xsize;
277 } else
278 sc_move_cursor(scp, 0, scp->ypos + 1);
279 } else
280 sc_move_cursor(scp, i, scp->ypos);
281}
282
283static __inline void
284sc_term_backtab(scr_stat *scp, int n)
285{
286 int i;
287
288 if (n < 1)
289 n = 1;
290 if ((i = scp->xpos & ~7) == scp->xpos)
291 i -= 8*n;
292 else
293 i -= 8*(n - 1);
294 if (i < 0)
295 i = 0;
296 sc_move_cursor(scp, i, scp->ypos);
297}
298
299static __inline void
300sc_term_respond(scr_stat *scp, u_char *s)
301{
302 sc_paste(scp, s, strlen(s)); /* XXX: not correct, don't use rmap */
303}
304
305static __inline void
306sc_term_gen_print(scr_stat *scp, u_char **buf, int *len, int attr)
307{
308 vm_offset_t p;
309 u_char *ptr;
310 u_char *map;
311 int cnt;
312 int l;
313 int i;
314
315 ptr = *buf;
316 l = *len;
317
318 if (PRINTABLE(*ptr)) {
319 p = sc_vtb_pointer(&scp->vtb, scp->cursor_pos);
320 map = scp->sc->scr_map;
321
322 cnt = imin(l, scp->xsize - scp->xpos);
323 i = cnt;
324 do {
325 p = sc_vtb_putchar(&scp->vtb, p, map[*ptr], attr);
326 ++ptr;
327 --i;
328 } while ((i > 0) && PRINTABLE(*ptr));
329
330 l -= cnt - i;
331 mark_for_update(scp, scp->cursor_pos);
332 scp->cursor_pos += cnt - i;
333 mark_for_update(scp, scp->cursor_pos - 1);
334 scp->xpos += cnt - i;
335
336 if (scp->xpos >= scp->xsize) {
337 scp->xpos = 0;
338 scp->ypos++;
339 /* we may have to scroll the screen */
340 }
341 } else {
342 switch(*ptr) {
343 case 0x07:
344 sc_bell(scp, scp->bell_pitch, scp->bell_duration);
345 break;
346
347 case 0x08: /* non-destructive backspace */
348 /* XXX */
349 if (scp->cursor_pos > 0) {
350#if 0
351 mark_for_update(scp, scp->cursor_pos);
352 scp->cursor_pos--;
353 mark_for_update(scp, scp->cursor_pos);
354#else
355 scp->cursor_pos--;
356#endif
357 if (scp->xpos > 0) {
358 scp->xpos--;
359 } else {
360 scp->xpos += scp->xsize - 1;
361 scp->ypos--;
362 }
363 }
364 break;
365
366 case 0x09: /* non-destructive tab */
367 sc_term_tab(scp, 1);
368 /* we may have to scroll the screen */
369#if 0
370 mark_for_update(scp, scp->cursor_pos);
371 scp->cursor_pos += (8 - scp->xpos % 8u);
372 mark_for_update(scp, scp->cursor_pos);
373 scp->xpos += (8 - scp->xpos % 8u);
374 if (scp->xpos >= scp->xsize) {
375 scp->xpos = 0;
376 scp->ypos++;
377 }
378#endif
379 break;
380
381 case 0x0a: /* newline, same pos */
382#if 0
383 mark_for_update(scp, scp->cursor_pos);
384 scp->cursor_pos += scp->xsize;
385 mark_for_update(scp, scp->cursor_pos);
386#else
387 scp->cursor_pos += scp->xsize;
388 /* we may have to scroll the screen */
389#endif
390 scp->ypos++;
391 break;
392
393 case 0x0c: /* form feed, clears screen */
394 sc_clear_screen(scp);
395 break;
396
397 case 0x0d: /* return, return to pos 0 */
398#if 0
399 mark_for_update(scp, scp->cursor_pos);
400 scp->cursor_pos -= scp->xpos;
401 mark_for_update(scp, scp->cursor_pos);
402#else
403 scp->cursor_pos -= scp->xpos;
404#endif
405 scp->xpos = 0;
406 break;
407 }
408 ptr++; l--;
409 }
410
411 *buf = ptr;
412 *len = l;
413}
414
415static __inline void
416sc_term_gen_scroll(scr_stat *scp, int ch, int attr)
417{
418 /* do we have to scroll ?? */
419 if (scp->cursor_pos >= scp->ysize*scp->xsize) {
420 sc_remove_cutmarking(scp); /* XXX */
421#ifndef SC_NO_HISTORY
422 if (scp->history != NULL)
423 sc_hist_save_one_line(scp, 0); /* XXX */
424#endif
425 sc_vtb_delete(&scp->vtb, 0, scp->xsize, ch, attr);
426 scp->cursor_pos -= scp->xsize;
427 scp->ypos--;
428 mark_all(scp);
429 }
430}
431
432#endif /* _DEV_SYSCONS_SCTERMVAR_H_ */
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