st.c - st - simple terminal | |
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--- | |
st.c (57820B) | |
--- | |
1 /* See LICENSE for license details. */ | |
2 #include <ctype.h> | |
3 #include <errno.h> | |
4 #include <fcntl.h> | |
5 #include <limits.h> | |
6 #include <pwd.h> | |
7 #include <stdarg.h> | |
8 #include <stdio.h> | |
9 #include <stdlib.h> | |
10 #include <string.h> | |
11 #include <signal.h> | |
12 #include <sys/ioctl.h> | |
13 #include <sys/select.h> | |
14 #include <sys/types.h> | |
15 #include <sys/wait.h> | |
16 #include <termios.h> | |
17 #include <unistd.h> | |
18 #include <wchar.h> | |
19 | |
20 #include "st.h" | |
21 #include "win.h" | |
22 | |
23 #if defined(__linux) | |
24 #include <pty.h> | |
25 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__) | |
26 #include <util.h> | |
27 #elif defined(__FreeBSD__) || defined(__DragonFly__) | |
28 #include <libutil.h> | |
29 #endif | |
30 | |
31 /* Arbitrary sizes */ | |
32 #define UTF_INVALID 0xFFFD | |
33 #define UTF_SIZ 4 | |
34 #define ESC_BUF_SIZ (128*UTF_SIZ) | |
35 #define ESC_ARG_SIZ 16 | |
36 #define STR_BUF_SIZ ESC_BUF_SIZ | |
37 #define STR_ARG_SIZ ESC_ARG_SIZ | |
38 | |
39 /* macros */ | |
40 #define IS_SET(flag) ((term.mode & (flag)) != 0) | |
41 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == 0x7… | |
42 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f)) | |
43 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c)) | |
44 #define ISDELIM(u) (u && wcschr(worddelimiters, u)) | |
45 | |
46 enum term_mode { | |
47 MODE_WRAP = 1 << 0, | |
48 MODE_INSERT = 1 << 1, | |
49 MODE_ALTSCREEN = 1 << 2, | |
50 MODE_CRLF = 1 << 3, | |
51 MODE_ECHO = 1 << 4, | |
52 MODE_PRINT = 1 << 5, | |
53 MODE_UTF8 = 1 << 6, | |
54 }; | |
55 | |
56 enum cursor_movement { | |
57 CURSOR_SAVE, | |
58 CURSOR_LOAD | |
59 }; | |
60 | |
61 enum cursor_state { | |
62 CURSOR_DEFAULT = 0, | |
63 CURSOR_WRAPNEXT = 1, | |
64 CURSOR_ORIGIN = 2 | |
65 }; | |
66 | |
67 enum charset { | |
68 CS_GRAPHIC0, | |
69 CS_GRAPHIC1, | |
70 CS_UK, | |
71 CS_USA, | |
72 CS_MULTI, | |
73 CS_GER, | |
74 CS_FIN | |
75 }; | |
76 | |
77 enum escape_state { | |
78 ESC_START = 1, | |
79 ESC_CSI = 2, | |
80 ESC_STR = 4, /* DCS, OSC, PM, APC */ | |
81 ESC_ALTCHARSET = 8, | |
82 ESC_STR_END = 16, /* a final string was encountered */ | |
83 ESC_TEST = 32, /* Enter in test mode */ | |
84 ESC_UTF8 = 64, | |
85 }; | |
86 | |
87 typedef struct { | |
88 Glyph attr; /* current char attributes */ | |
89 int x; | |
90 int y; | |
91 char state; | |
92 } TCursor; | |
93 | |
94 typedef struct { | |
95 int mode; | |
96 int type; | |
97 int snap; | |
98 /* | |
99 * Selection variables: | |
100 * nb – normalized coordinates of the beginning of the selecti… | |
101 * ne – normalized coordinates of the end of the selection | |
102 * ob – original coordinates of the beginning of the selection | |
103 * oe – original coordinates of the end of the selection | |
104 */ | |
105 struct { | |
106 int x, y; | |
107 } nb, ne, ob, oe; | |
108 | |
109 int alt; | |
110 } Selection; | |
111 | |
112 /* Internal representation of the screen */ | |
113 typedef struct { | |
114 int row; /* nb row */ | |
115 int col; /* nb col */ | |
116 Line *line; /* screen */ | |
117 Line *alt; /* alternate screen */ | |
118 int *dirty; /* dirtyness of lines */ | |
119 TCursor c; /* cursor */ | |
120 int ocx; /* old cursor col */ | |
121 int ocy; /* old cursor row */ | |
122 int top; /* top scroll limit */ | |
123 int bot; /* bottom scroll limit */ | |
124 int mode; /* terminal mode flags */ | |
125 int esc; /* escape state flags */ | |
126 char trantbl[4]; /* charset table translation */ | |
127 int charset; /* current charset */ | |
128 int icharset; /* selected charset for sequence */ | |
129 int *tabs; | |
130 Rune lastc; /* last printed char outside of sequence, 0 if con… | |
131 } Term; | |
132 | |
133 /* CSI Escape sequence structs */ | |
134 /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */ | |
135 typedef struct { | |
136 char buf[ESC_BUF_SIZ]; /* raw string */ | |
137 size_t len; /* raw string length */ | |
138 char priv; | |
139 int arg[ESC_ARG_SIZ]; | |
140 int narg; /* nb of args */ | |
141 char mode[2]; | |
142 } CSIEscape; | |
143 | |
144 /* STR Escape sequence structs */ | |
145 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */ | |
146 typedef struct { | |
147 char type; /* ESC type ... */ | |
148 char *buf; /* allocated raw string */ | |
149 size_t siz; /* allocation size */ | |
150 size_t len; /* raw string length */ | |
151 char *args[STR_ARG_SIZ]; | |
152 int narg; /* nb of args */ | |
153 } STREscape; | |
154 | |
155 static void execsh(char *, char **); | |
156 static void stty(char **); | |
157 static void sigchld(int); | |
158 static void ttywriteraw(const char *, size_t); | |
159 | |
160 static void csidump(void); | |
161 static void csihandle(void); | |
162 static void csiparse(void); | |
163 static void csireset(void); | |
164 static void osc_color_response(int, int, int); | |
165 static int eschandle(uchar); | |
166 static void strdump(void); | |
167 static void strhandle(void); | |
168 static void strparse(void); | |
169 static void strreset(void); | |
170 | |
171 static void tprinter(char *, size_t); | |
172 static void tdumpsel(void); | |
173 static void tdumpline(int); | |
174 static void tdump(void); | |
175 static void tclearregion(int, int, int, int); | |
176 static void tcursor(int); | |
177 static void tdeletechar(int); | |
178 static void tdeleteline(int); | |
179 static void tinsertblank(int); | |
180 static void tinsertblankline(int); | |
181 static int tlinelen(int); | |
182 static void tmoveto(int, int); | |
183 static void tmoveato(int, int); | |
184 static void tnewline(int); | |
185 static void tputtab(int); | |
186 static void tputc(Rune); | |
187 static void treset(void); | |
188 static void tscrollup(int, int); | |
189 static void tscrolldown(int, int); | |
190 static void tsetattr(const int *, int); | |
191 static void tsetchar(Rune, const Glyph *, int, int); | |
192 static void tsetdirt(int, int); | |
193 static void tsetscroll(int, int); | |
194 static void tswapscreen(void); | |
195 static void tsetmode(int, int, const int *, int); | |
196 static int twrite(const char *, int, int); | |
197 static void tfulldirt(void); | |
198 static void tcontrolcode(uchar ); | |
199 static void tdectest(char ); | |
200 static void tdefutf8(char); | |
201 static int32_t tdefcolor(const int *, int *, int); | |
202 static void tdeftran(char); | |
203 static void tstrsequence(uchar); | |
204 | |
205 static void drawregion(int, int, int, int); | |
206 | |
207 static void selnormalize(void); | |
208 static void selscroll(int, int); | |
209 static void selsnap(int *, int *, int); | |
210 | |
211 static size_t utf8decode(const char *, Rune *, size_t); | |
212 static Rune utf8decodebyte(char, size_t *); | |
213 static char utf8encodebyte(Rune, size_t); | |
214 static size_t utf8validate(Rune *, size_t); | |
215 | |
216 static char *base64dec(const char *); | |
217 static char base64dec_getc(const char **); | |
218 | |
219 static ssize_t xwrite(int, const char *, size_t); | |
220 | |
221 /* Globals */ | |
222 static Term term; | |
223 static Selection sel; | |
224 static CSIEscape csiescseq; | |
225 static STREscape strescseq; | |
226 static int iofd = 1; | |
227 static int cmdfd; | |
228 static pid_t pid; | |
229 | |
230 static const uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0}; | |
231 static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8}; | |
232 static const Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, … | |
233 static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, … | |
234 | |
235 ssize_t | |
236 xwrite(int fd, const char *s, size_t len) | |
237 { | |
238 size_t aux = len; | |
239 ssize_t r; | |
240 | |
241 while (len > 0) { | |
242 r = write(fd, s, len); | |
243 if (r < 0) | |
244 return r; | |
245 len -= r; | |
246 s += r; | |
247 } | |
248 | |
249 return aux; | |
250 } | |
251 | |
252 void * | |
253 xmalloc(size_t len) | |
254 { | |
255 void *p; | |
256 | |
257 if (!(p = malloc(len))) | |
258 die("malloc: %s\n", strerror(errno)); | |
259 | |
260 return p; | |
261 } | |
262 | |
263 void * | |
264 xrealloc(void *p, size_t len) | |
265 { | |
266 if ((p = realloc(p, len)) == NULL) | |
267 die("realloc: %s\n", strerror(errno)); | |
268 | |
269 return p; | |
270 } | |
271 | |
272 char * | |
273 xstrdup(const char *s) | |
274 { | |
275 char *p; | |
276 | |
277 if ((p = strdup(s)) == NULL) | |
278 die("strdup: %s\n", strerror(errno)); | |
279 | |
280 return p; | |
281 } | |
282 | |
283 size_t | |
284 utf8decode(const char *c, Rune *u, size_t clen) | |
285 { | |
286 size_t i, j, len, type; | |
287 Rune udecoded; | |
288 | |
289 *u = UTF_INVALID; | |
290 if (!clen) | |
291 return 0; | |
292 udecoded = utf8decodebyte(c[0], &len); | |
293 if (!BETWEEN(len, 1, UTF_SIZ)) | |
294 return 1; | |
295 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) { | |
296 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type); | |
297 if (type != 0) | |
298 return j; | |
299 } | |
300 if (j < len) | |
301 return 0; | |
302 *u = udecoded; | |
303 utf8validate(u, len); | |
304 | |
305 return len; | |
306 } | |
307 | |
308 Rune | |
309 utf8decodebyte(char c, size_t *i) | |
310 { | |
311 for (*i = 0; *i < LEN(utfmask); ++(*i)) | |
312 if (((uchar)c & utfmask[*i]) == utfbyte[*i]) | |
313 return (uchar)c & ~utfmask[*i]; | |
314 | |
315 return 0; | |
316 } | |
317 | |
318 size_t | |
319 utf8encode(Rune u, char *c) | |
320 { | |
321 size_t len, i; | |
322 | |
323 len = utf8validate(&u, 0); | |
324 if (len > UTF_SIZ) | |
325 return 0; | |
326 | |
327 for (i = len - 1; i != 0; --i) { | |
328 c[i] = utf8encodebyte(u, 0); | |
329 u >>= 6; | |
330 } | |
331 c[0] = utf8encodebyte(u, len); | |
332 | |
333 return len; | |
334 } | |
335 | |
336 char | |
337 utf8encodebyte(Rune u, size_t i) | |
338 { | |
339 return utfbyte[i] | (u & ~utfmask[i]); | |
340 } | |
341 | |
342 size_t | |
343 utf8validate(Rune *u, size_t i) | |
344 { | |
345 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0x… | |
346 *u = UTF_INVALID; | |
347 for (i = 1; *u > utfmax[i]; ++i) | |
348 ; | |
349 | |
350 return i; | |
351 } | |
352 | |
353 char | |
354 base64dec_getc(const char **src) | |
355 { | |
356 while (**src && !isprint((unsigned char)**src)) | |
357 (*src)++; | |
358 return **src ? *((*src)++) : '='; /* emulate padding if string … | |
359 } | |
360 | |
361 char * | |
362 base64dec(const char *src) | |
363 { | |
364 size_t in_len = strlen(src); | |
365 char *result, *dst; | |
366 static const char base64_digits[256] = { | |
367 [43] = 62, 0, 0, 0, 63, 52, 53, 54, 55, 56, 57, 58, 59, … | |
368 0, 0, 0, -1, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, … | |
369 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0… | |
370 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38… | |
371 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 | |
372 }; | |
373 | |
374 if (in_len % 4) | |
375 in_len += 4 - (in_len % 4); | |
376 result = dst = xmalloc(in_len / 4 * 3 + 1); | |
377 while (*src) { | |
378 int a = base64_digits[(unsigned char) base64dec_getc(&sr… | |
379 int b = base64_digits[(unsigned char) base64dec_getc(&sr… | |
380 int c = base64_digits[(unsigned char) base64dec_getc(&sr… | |
381 int d = base64_digits[(unsigned char) base64dec_getc(&sr… | |
382 | |
383 /* invalid input. 'a' can be -1, e.g. if src is "\n" (c-… | |
384 if (a == -1 || b == -1) | |
385 break; | |
386 | |
387 *dst++ = (a << 2) | ((b & 0x30) >> 4); | |
388 if (c == -1) | |
389 break; | |
390 *dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2); | |
391 if (d == -1) | |
392 break; | |
393 *dst++ = ((c & 0x03) << 6) | d; | |
394 } | |
395 *dst = '\0'; | |
396 return result; | |
397 } | |
398 | |
399 void | |
400 selinit(void) | |
401 { | |
402 sel.mode = SEL_IDLE; | |
403 sel.snap = 0; | |
404 sel.ob.x = -1; | |
405 } | |
406 | |
407 int | |
408 tlinelen(int y) | |
409 { | |
410 int i = term.col; | |
411 | |
412 if (term.line[y][i - 1].mode & ATTR_WRAP) | |
413 return i; | |
414 | |
415 while (i > 0 && term.line[y][i - 1].u == ' ') | |
416 --i; | |
417 | |
418 return i; | |
419 } | |
420 | |
421 void | |
422 selstart(int col, int row, int snap) | |
423 { | |
424 selclear(); | |
425 sel.mode = SEL_EMPTY; | |
426 sel.type = SEL_REGULAR; | |
427 sel.alt = IS_SET(MODE_ALTSCREEN); | |
428 sel.snap = snap; | |
429 sel.oe.x = sel.ob.x = col; | |
430 sel.oe.y = sel.ob.y = row; | |
431 selnormalize(); | |
432 | |
433 if (sel.snap != 0) | |
434 sel.mode = SEL_READY; | |
435 tsetdirt(sel.nb.y, sel.ne.y); | |
436 } | |
437 | |
438 void | |
439 selextend(int col, int row, int type, int done) | |
440 { | |
441 int oldey, oldex, oldsby, oldsey, oldtype; | |
442 | |
443 if (sel.mode == SEL_IDLE) | |
444 return; | |
445 if (done && sel.mode == SEL_EMPTY) { | |
446 selclear(); | |
447 return; | |
448 } | |
449 | |
450 oldey = sel.oe.y; | |
451 oldex = sel.oe.x; | |
452 oldsby = sel.nb.y; | |
453 oldsey = sel.ne.y; | |
454 oldtype = sel.type; | |
455 | |
456 sel.oe.x = col; | |
457 sel.oe.y = row; | |
458 selnormalize(); | |
459 sel.type = type; | |
460 | |
461 if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.typ… | |
462 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey)); | |
463 | |
464 sel.mode = done ? SEL_IDLE : SEL_READY; | |
465 } | |
466 | |
467 void | |
468 selnormalize(void) | |
469 { | |
470 int i; | |
471 | |
472 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) { | |
473 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x; | |
474 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x; | |
475 } else { | |
476 sel.nb.x = MIN(sel.ob.x, sel.oe.x); | |
477 sel.ne.x = MAX(sel.ob.x, sel.oe.x); | |
478 } | |
479 sel.nb.y = MIN(sel.ob.y, sel.oe.y); | |
480 sel.ne.y = MAX(sel.ob.y, sel.oe.y); | |
481 | |
482 selsnap(&sel.nb.x, &sel.nb.y, -1); | |
483 selsnap(&sel.ne.x, &sel.ne.y, +1); | |
484 | |
485 /* expand selection over line breaks */ | |
486 if (sel.type == SEL_RECTANGULAR) | |
487 return; | |
488 i = tlinelen(sel.nb.y); | |
489 if (i < sel.nb.x) | |
490 sel.nb.x = i; | |
491 if (tlinelen(sel.ne.y) <= sel.ne.x) | |
492 sel.ne.x = term.col - 1; | |
493 } | |
494 | |
495 int | |
496 selected(int x, int y) | |
497 { | |
498 if (sel.mode == SEL_EMPTY || sel.ob.x == -1 || | |
499 sel.alt != IS_SET(MODE_ALTSCREEN)) | |
500 return 0; | |
501 | |
502 if (sel.type == SEL_RECTANGULAR) | |
503 return BETWEEN(y, sel.nb.y, sel.ne.y) | |
504 && BETWEEN(x, sel.nb.x, sel.ne.x); | |
505 | |
506 return BETWEEN(y, sel.nb.y, sel.ne.y) | |
507 && (y != sel.nb.y || x >= sel.nb.x) | |
508 && (y != sel.ne.y || x <= sel.ne.x); | |
509 } | |
510 | |
511 void | |
512 selsnap(int *x, int *y, int direction) | |
513 { | |
514 int newx, newy, xt, yt; | |
515 int delim, prevdelim; | |
516 const Glyph *gp, *prevgp; | |
517 | |
518 switch (sel.snap) { | |
519 case SNAP_WORD: | |
520 /* | |
521 * Snap around if the word wraps around at the end or | |
522 * beginning of a line. | |
523 */ | |
524 prevgp = &term.line[*y][*x]; | |
525 prevdelim = ISDELIM(prevgp->u); | |
526 for (;;) { | |
527 newx = *x + direction; | |
528 newy = *y; | |
529 if (!BETWEEN(newx, 0, term.col - 1)) { | |
530 newy += direction; | |
531 newx = (newx + term.col) % term.col; | |
532 if (!BETWEEN(newy, 0, term.row - 1)) | |
533 break; | |
534 | |
535 if (direction > 0) | |
536 yt = *y, xt = *x; | |
537 else | |
538 yt = newy, xt = newx; | |
539 if (!(term.line[yt][xt].mode & ATTR_WRAP… | |
540 break; | |
541 } | |
542 | |
543 if (newx >= tlinelen(newy)) | |
544 break; | |
545 | |
546 gp = &term.line[newy][newx]; | |
547 delim = ISDELIM(gp->u); | |
548 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevd… | |
549 || (delim && gp->u != prevgp->u)… | |
550 break; | |
551 | |
552 *x = newx; | |
553 *y = newy; | |
554 prevgp = gp; | |
555 prevdelim = delim; | |
556 } | |
557 break; | |
558 case SNAP_LINE: | |
559 /* | |
560 * Snap around if the the previous line or the current o… | |
561 * has set ATTR_WRAP at its end. Then the whole next or | |
562 * previous line will be selected. | |
563 */ | |
564 *x = (direction < 0) ? 0 : term.col - 1; | |
565 if (direction < 0) { | |
566 for (; *y > 0; *y += direction) { | |
567 if (!(term.line[*y-1][term.col-1].mode | |
568 & ATTR_WRAP)) { | |
569 break; | |
570 } | |
571 } | |
572 } else if (direction > 0) { | |
573 for (; *y < term.row-1; *y += direction) { | |
574 if (!(term.line[*y][term.col-1].mode | |
575 & ATTR_WRAP)) { | |
576 break; | |
577 } | |
578 } | |
579 } | |
580 break; | |
581 } | |
582 } | |
583 | |
584 char * | |
585 getsel(void) | |
586 { | |
587 char *str, *ptr; | |
588 int y, bufsize, lastx, linelen; | |
589 const Glyph *gp, *last; | |
590 | |
591 if (sel.ob.x == -1) | |
592 return NULL; | |
593 | |
594 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ; | |
595 ptr = str = xmalloc(bufsize); | |
596 | |
597 /* append every set & selected glyph to the selection */ | |
598 for (y = sel.nb.y; y <= sel.ne.y; y++) { | |
599 if ((linelen = tlinelen(y)) == 0) { | |
600 *ptr++ = '\n'; | |
601 continue; | |
602 } | |
603 | |
604 if (sel.type == SEL_RECTANGULAR) { | |
605 gp = &term.line[y][sel.nb.x]; | |
606 lastx = sel.ne.x; | |
607 } else { | |
608 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0]; | |
609 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1; | |
610 } | |
611 last = &term.line[y][MIN(lastx, linelen-1)]; | |
612 while (last >= gp && last->u == ' ') | |
613 --last; | |
614 | |
615 for ( ; gp <= last; ++gp) { | |
616 if (gp->mode & ATTR_WDUMMY) | |
617 continue; | |
618 | |
619 ptr += utf8encode(gp->u, ptr); | |
620 } | |
621 | |
622 /* | |
623 * Copy and pasting of line endings is inconsistent | |
624 * in the inconsistent terminal and GUI world. | |
625 * The best solution seems like to produce '\n' when | |
626 * something is copied from st and convert '\n' to | |
627 * '\r', when something to be pasted is received by | |
628 * st. | |
629 * FIXME: Fix the computer world. | |
630 */ | |
631 if ((y < sel.ne.y || lastx >= linelen) && | |
632 (!(last->mode & ATTR_WRAP) || sel.type == SEL_RECTAN… | |
633 *ptr++ = '\n'; | |
634 } | |
635 *ptr = 0; | |
636 return str; | |
637 } | |
638 | |
639 void | |
640 selclear(void) | |
641 { | |
642 if (sel.ob.x == -1) | |
643 return; | |
644 sel.mode = SEL_IDLE; | |
645 sel.ob.x = -1; | |
646 tsetdirt(sel.nb.y, sel.ne.y); | |
647 } | |
648 | |
649 void | |
650 die(const char *errstr, ...) | |
651 { | |
652 va_list ap; | |
653 | |
654 va_start(ap, errstr); | |
655 vfprintf(stderr, errstr, ap); | |
656 va_end(ap); | |
657 exit(1); | |
658 } | |
659 | |
660 void | |
661 execsh(char *cmd, char **args) | |
662 { | |
663 char *sh, *prog, *arg; | |
664 const struct passwd *pw; | |
665 | |
666 errno = 0; | |
667 if ((pw = getpwuid(getuid())) == NULL) { | |
668 if (errno) | |
669 die("getpwuid: %s\n", strerror(errno)); | |
670 else | |
671 die("who are you?\n"); | |
672 } | |
673 | |
674 if ((sh = getenv("SHELL")) == NULL) | |
675 sh = (pw->pw_shell[0]) ? pw->pw_shell : cmd; | |
676 | |
677 if (args) { | |
678 prog = args[0]; | |
679 arg = NULL; | |
680 } else if (scroll) { | |
681 prog = scroll; | |
682 arg = utmp ? utmp : sh; | |
683 } else if (utmp) { | |
684 prog = utmp; | |
685 arg = NULL; | |
686 } else { | |
687 prog = sh; | |
688 arg = NULL; | |
689 } | |
690 DEFAULT(args, ((char *[]) {prog, arg, NULL})); | |
691 | |
692 unsetenv("COLUMNS"); | |
693 unsetenv("LINES"); | |
694 unsetenv("TERMCAP"); | |
695 setenv("LOGNAME", pw->pw_name, 1); | |
696 setenv("USER", pw->pw_name, 1); | |
697 setenv("SHELL", sh, 1); | |
698 setenv("HOME", pw->pw_dir, 1); | |
699 setenv("TERM", termname, 1); | |
700 | |
701 signal(SIGCHLD, SIG_DFL); | |
702 signal(SIGHUP, SIG_DFL); | |
703 signal(SIGINT, SIG_DFL); | |
704 signal(SIGQUIT, SIG_DFL); | |
705 signal(SIGTERM, SIG_DFL); | |
706 signal(SIGALRM, SIG_DFL); | |
707 | |
708 execvp(prog, args); | |
709 _exit(1); | |
710 } | |
711 | |
712 void | |
713 sigchld(int a) | |
714 { | |
715 int stat; | |
716 pid_t p; | |
717 | |
718 if ((p = waitpid(pid, &stat, WNOHANG)) < 0) | |
719 die("waiting for pid %hd failed: %s\n", pid, strerror(er… | |
720 | |
721 if (pid != p) | |
722 return; | |
723 | |
724 if (WIFEXITED(stat) && WEXITSTATUS(stat)) | |
725 die("child exited with status %d\n", WEXITSTATUS(stat)); | |
726 else if (WIFSIGNALED(stat)) | |
727 die("child terminated due to signal %d\n", WTERMSIG(stat… | |
728 _exit(0); | |
729 } | |
730 | |
731 void | |
732 stty(char **args) | |
733 { | |
734 char cmd[_POSIX_ARG_MAX], **p, *q, *s; | |
735 size_t n, siz; | |
736 | |
737 if ((n = strlen(stty_args)) > sizeof(cmd)-1) | |
738 die("incorrect stty parameters\n"); | |
739 memcpy(cmd, stty_args, n); | |
740 q = cmd + n; | |
741 siz = sizeof(cmd) - n; | |
742 for (p = args; p && (s = *p); ++p) { | |
743 if ((n = strlen(s)) > siz-1) | |
744 die("stty parameter length too long\n"); | |
745 *q++ = ' '; | |
746 memcpy(q, s, n); | |
747 q += n; | |
748 siz -= n + 1; | |
749 } | |
750 *q = '\0'; | |
751 if (system(cmd) != 0) | |
752 perror("Couldn't call stty"); | |
753 } | |
754 | |
755 int | |
756 ttynew(const char *line, char *cmd, const char *out, char **args) | |
757 { | |
758 int m, s; | |
759 | |
760 if (out) { | |
761 term.mode |= MODE_PRINT; | |
762 iofd = (!strcmp(out, "-")) ? | |
763 1 : open(out, O_WRONLY | O_CREAT, 0666); | |
764 if (iofd < 0) { | |
765 fprintf(stderr, "Error opening %s:%s\n", | |
766 out, strerror(errno)); | |
767 } | |
768 } | |
769 | |
770 if (line) { | |
771 if ((cmdfd = open(line, O_RDWR)) < 0) | |
772 die("open line '%s' failed: %s\n", | |
773 line, strerror(errno)); | |
774 dup2(cmdfd, 0); | |
775 stty(args); | |
776 return cmdfd; | |
777 } | |
778 | |
779 /* seems to work fine on linux, openbsd and freebsd */ | |
780 if (openpty(&m, &s, NULL, NULL, NULL) < 0) | |
781 die("openpty failed: %s\n", strerror(errno)); | |
782 | |
783 switch (pid = fork()) { | |
784 case -1: | |
785 die("fork failed: %s\n", strerror(errno)); | |
786 break; | |
787 case 0: | |
788 close(iofd); | |
789 close(m); | |
790 setsid(); /* create a new process group */ | |
791 dup2(s, 0); | |
792 dup2(s, 1); | |
793 dup2(s, 2); | |
794 if (ioctl(s, TIOCSCTTY, NULL) < 0) | |
795 die("ioctl TIOCSCTTY failed: %s\n", strerror(err… | |
796 if (s > 2) | |
797 close(s); | |
798 #ifdef __OpenBSD__ | |
799 if (pledge("stdio getpw proc exec", NULL) == -1) | |
800 die("pledge\n"); | |
801 #endif | |
802 execsh(cmd, args); | |
803 break; | |
804 default: | |
805 #ifdef __OpenBSD__ | |
806 if (pledge("stdio rpath tty proc", NULL) == -1) | |
807 die("pledge\n"); | |
808 #endif | |
809 close(s); | |
810 cmdfd = m; | |
811 signal(SIGCHLD, sigchld); | |
812 break; | |
813 } | |
814 return cmdfd; | |
815 } | |
816 | |
817 size_t | |
818 ttyread(void) | |
819 { | |
820 static char buf[BUFSIZ]; | |
821 static int buflen = 0; | |
822 int ret, written; | |
823 | |
824 /* append read bytes to unprocessed bytes */ | |
825 ret = read(cmdfd, buf+buflen, LEN(buf)-buflen); | |
826 | |
827 switch (ret) { | |
828 case 0: | |
829 exit(0); | |
830 case -1: | |
831 die("couldn't read from shell: %s\n", strerror(errno)); | |
832 default: | |
833 buflen += ret; | |
834 written = twrite(buf, buflen, 0); | |
835 buflen -= written; | |
836 /* keep any incomplete UTF-8 byte sequence for the next … | |
837 if (buflen > 0) | |
838 memmove(buf, buf + written, buflen); | |
839 return ret; | |
840 } | |
841 } | |
842 | |
843 void | |
844 ttywrite(const char *s, size_t n, int may_echo) | |
845 { | |
846 const char *next; | |
847 | |
848 if (may_echo && IS_SET(MODE_ECHO)) | |
849 twrite(s, n, 1); | |
850 | |
851 if (!IS_SET(MODE_CRLF)) { | |
852 ttywriteraw(s, n); | |
853 return; | |
854 } | |
855 | |
856 /* This is similar to how the kernel handles ONLCR for ttys */ | |
857 while (n > 0) { | |
858 if (*s == '\r') { | |
859 next = s + 1; | |
860 ttywriteraw("\r\n", 2); | |
861 } else { | |
862 next = memchr(s, '\r', n); | |
863 DEFAULT(next, s + n); | |
864 ttywriteraw(s, next - s); | |
865 } | |
866 n -= next - s; | |
867 s = next; | |
868 } | |
869 } | |
870 | |
871 void | |
872 ttywriteraw(const char *s, size_t n) | |
873 { | |
874 fd_set wfd, rfd; | |
875 ssize_t r; | |
876 size_t lim = 256; | |
877 | |
878 /* | |
879 * Remember that we are using a pty, which might be a modem line. | |
880 * Writing too much will clog the line. That's why we are doing … | |
881 * dance. | |
882 * FIXME: Migrate the world to Plan 9. | |
883 */ | |
884 while (n > 0) { | |
885 FD_ZERO(&wfd); | |
886 FD_ZERO(&rfd); | |
887 FD_SET(cmdfd, &wfd); | |
888 FD_SET(cmdfd, &rfd); | |
889 | |
890 /* Check if we can write. */ | |
891 if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) { | |
892 if (errno == EINTR) | |
893 continue; | |
894 die("select failed: %s\n", strerror(errno)); | |
895 } | |
896 if (FD_ISSET(cmdfd, &wfd)) { | |
897 /* | |
898 * Only write the bytes written by ttywrite() or… | |
899 * default of 256. This seems to be a reasonable… | |
900 * for a serial line. Bigger values might clog t… | |
901 */ | |
902 if ((r = write(cmdfd, s, (n < lim)? n : lim)) < … | |
903 goto write_error; | |
904 if (r < n) { | |
905 /* | |
906 * We weren't able to write out everythi… | |
907 * This means the buffer is getting full | |
908 * again. Empty it. | |
909 */ | |
910 if (n < lim) | |
911 lim = ttyread(); | |
912 n -= r; | |
913 s += r; | |
914 } else { | |
915 /* All bytes have been written. */ | |
916 break; | |
917 } | |
918 } | |
919 if (FD_ISSET(cmdfd, &rfd)) | |
920 lim = ttyread(); | |
921 } | |
922 return; | |
923 | |
924 write_error: | |
925 die("write error on tty: %s\n", strerror(errno)); | |
926 } | |
927 | |
928 void | |
929 ttyresize(int tw, int th) | |
930 { | |
931 struct winsize w; | |
932 | |
933 w.ws_row = term.row; | |
934 w.ws_col = term.col; | |
935 w.ws_xpixel = tw; | |
936 w.ws_ypixel = th; | |
937 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0) | |
938 fprintf(stderr, "Couldn't set window size: %s\n", strerr… | |
939 } | |
940 | |
941 void | |
942 ttyhangup(void) | |
943 { | |
944 /* Send SIGHUP to shell */ | |
945 kill(pid, SIGHUP); | |
946 } | |
947 | |
948 int | |
949 tattrset(int attr) | |
950 { | |
951 int i, j; | |
952 | |
953 for (i = 0; i < term.row-1; i++) { | |
954 for (j = 0; j < term.col-1; j++) { | |
955 if (term.line[i][j].mode & attr) | |
956 return 1; | |
957 } | |
958 } | |
959 | |
960 return 0; | |
961 } | |
962 | |
963 void | |
964 tsetdirt(int top, int bot) | |
965 { | |
966 int i; | |
967 | |
968 LIMIT(top, 0, term.row-1); | |
969 LIMIT(bot, 0, term.row-1); | |
970 | |
971 for (i = top; i <= bot; i++) | |
972 term.dirty[i] = 1; | |
973 } | |
974 | |
975 void | |
976 tsetdirtattr(int attr) | |
977 { | |
978 int i, j; | |
979 | |
980 for (i = 0; i < term.row-1; i++) { | |
981 for (j = 0; j < term.col-1; j++) { | |
982 if (term.line[i][j].mode & attr) { | |
983 tsetdirt(i, i); | |
984 break; | |
985 } | |
986 } | |
987 } | |
988 } | |
989 | |
990 void | |
991 tfulldirt(void) | |
992 { | |
993 tsetdirt(0, term.row-1); | |
994 } | |
995 | |
996 void | |
997 tcursor(int mode) | |
998 { | |
999 static TCursor c[2]; | |
1000 int alt = IS_SET(MODE_ALTSCREEN); | |
1001 | |
1002 if (mode == CURSOR_SAVE) { | |
1003 c[alt] = term.c; | |
1004 } else if (mode == CURSOR_LOAD) { | |
1005 term.c = c[alt]; | |
1006 tmoveto(c[alt].x, c[alt].y); | |
1007 } | |
1008 } | |
1009 | |
1010 void | |
1011 treset(void) | |
1012 { | |
1013 uint i; | |
1014 | |
1015 term.c = (TCursor){{ | |
1016 .mode = ATTR_NULL, | |
1017 .fg = defaultfg, | |
1018 .bg = defaultbg | |
1019 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT}; | |
1020 | |
1021 memset(term.tabs, 0, term.col * sizeof(*term.tabs)); | |
1022 for (i = tabspaces; i < term.col; i += tabspaces) | |
1023 term.tabs[i] = 1; | |
1024 term.top = 0; | |
1025 term.bot = term.row - 1; | |
1026 term.mode = MODE_WRAP|MODE_UTF8; | |
1027 memset(term.trantbl, CS_USA, sizeof(term.trantbl)); | |
1028 term.charset = 0; | |
1029 | |
1030 for (i = 0; i < 2; i++) { | |
1031 tmoveto(0, 0); | |
1032 tcursor(CURSOR_SAVE); | |
1033 tclearregion(0, 0, term.col-1, term.row-1); | |
1034 tswapscreen(); | |
1035 } | |
1036 } | |
1037 | |
1038 void | |
1039 tnew(int col, int row) | |
1040 { | |
1041 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg… | |
1042 tresize(col, row); | |
1043 treset(); | |
1044 } | |
1045 | |
1046 void | |
1047 tswapscreen(void) | |
1048 { | |
1049 Line *tmp = term.line; | |
1050 | |
1051 term.line = term.alt; | |
1052 term.alt = tmp; | |
1053 term.mode ^= MODE_ALTSCREEN; | |
1054 tfulldirt(); | |
1055 } | |
1056 | |
1057 void | |
1058 tscrolldown(int orig, int n) | |
1059 { | |
1060 int i; | |
1061 Line temp; | |
1062 | |
1063 LIMIT(n, 0, term.bot-orig+1); | |
1064 | |
1065 tsetdirt(orig, term.bot-n); | |
1066 tclearregion(0, term.bot-n+1, term.col-1, term.bot); | |
1067 | |
1068 for (i = term.bot; i >= orig+n; i--) { | |
1069 temp = term.line[i]; | |
1070 term.line[i] = term.line[i-n]; | |
1071 term.line[i-n] = temp; | |
1072 } | |
1073 | |
1074 selscroll(orig, n); | |
1075 } | |
1076 | |
1077 void | |
1078 tscrollup(int orig, int n) | |
1079 { | |
1080 int i; | |
1081 Line temp; | |
1082 | |
1083 LIMIT(n, 0, term.bot-orig+1); | |
1084 | |
1085 tclearregion(0, orig, term.col-1, orig+n-1); | |
1086 tsetdirt(orig+n, term.bot); | |
1087 | |
1088 for (i = orig; i <= term.bot-n; i++) { | |
1089 temp = term.line[i]; | |
1090 term.line[i] = term.line[i+n]; | |
1091 term.line[i+n] = temp; | |
1092 } | |
1093 | |
1094 selscroll(orig, -n); | |
1095 } | |
1096 | |
1097 void | |
1098 selscroll(int orig, int n) | |
1099 { | |
1100 if (sel.ob.x == -1 || sel.alt != IS_SET(MODE_ALTSCREEN)) | |
1101 return; | |
1102 | |
1103 if (BETWEEN(sel.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig,… | |
1104 selclear(); | |
1105 } else if (BETWEEN(sel.nb.y, orig, term.bot)) { | |
1106 sel.ob.y += n; | |
1107 sel.oe.y += n; | |
1108 if (sel.ob.y < term.top || sel.ob.y > term.bot || | |
1109 sel.oe.y < term.top || sel.oe.y > term.bot) { | |
1110 selclear(); | |
1111 } else { | |
1112 selnormalize(); | |
1113 } | |
1114 } | |
1115 } | |
1116 | |
1117 void | |
1118 tnewline(int first_col) | |
1119 { | |
1120 int y = term.c.y; | |
1121 | |
1122 if (y == term.bot) { | |
1123 tscrollup(term.top, 1); | |
1124 } else { | |
1125 y++; | |
1126 } | |
1127 tmoveto(first_col ? 0 : term.c.x, y); | |
1128 } | |
1129 | |
1130 void | |
1131 csiparse(void) | |
1132 { | |
1133 char *p = csiescseq.buf, *np; | |
1134 long int v; | |
1135 int sep = ';'; /* colon or semi-colon, but not both */ | |
1136 | |
1137 csiescseq.narg = 0; | |
1138 if (*p == '?') { | |
1139 csiescseq.priv = 1; | |
1140 p++; | |
1141 } | |
1142 | |
1143 csiescseq.buf[csiescseq.len] = '\0'; | |
1144 while (p < csiescseq.buf+csiescseq.len) { | |
1145 np = NULL; | |
1146 v = strtol(p, &np, 10); | |
1147 if (np == p) | |
1148 v = 0; | |
1149 if (v == LONG_MAX || v == LONG_MIN) | |
1150 v = -1; | |
1151 csiescseq.arg[csiescseq.narg++] = v; | |
1152 p = np; | |
1153 if (sep == ';' && *p == ':') | |
1154 sep = ':'; /* allow override to colon once */ | |
1155 if (*p != sep || csiescseq.narg == ESC_ARG_SIZ) | |
1156 break; | |
1157 p++; | |
1158 } | |
1159 csiescseq.mode[0] = *p++; | |
1160 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0… | |
1161 } | |
1162 | |
1163 /* for absolute user moves, when decom is set */ | |
1164 void | |
1165 tmoveato(int x, int y) | |
1166 { | |
1167 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0)); | |
1168 } | |
1169 | |
1170 void | |
1171 tmoveto(int x, int y) | |
1172 { | |
1173 int miny, maxy; | |
1174 | |
1175 if (term.c.state & CURSOR_ORIGIN) { | |
1176 miny = term.top; | |
1177 maxy = term.bot; | |
1178 } else { | |
1179 miny = 0; | |
1180 maxy = term.row - 1; | |
1181 } | |
1182 term.c.state &= ~CURSOR_WRAPNEXT; | |
1183 term.c.x = LIMIT(x, 0, term.col-1); | |
1184 term.c.y = LIMIT(y, miny, maxy); | |
1185 } | |
1186 | |
1187 void | |
1188 tsetchar(Rune u, const Glyph *attr, int x, int y) | |
1189 { | |
1190 static const char *vt100_0[62] = { /* 0x41 - 0x7e */ | |
1191 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - … | |
1192 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */ | |
1193 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */ | |
1194 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */ | |
1195 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /*… | |
1196 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", … | |
1197 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", … | |
1198 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */ | |
1199 }; | |
1200 | |
1201 /* | |
1202 * The table is proudly stolen from rxvt. | |
1203 */ | |
1204 if (term.trantbl[term.charset] == CS_GRAPHIC0 && | |
1205 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41]) | |
1206 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ); | |
1207 | |
1208 if (term.line[y][x].mode & ATTR_WIDE) { | |
1209 if (x+1 < term.col) { | |
1210 term.line[y][x+1].u = ' '; | |
1211 term.line[y][x+1].mode &= ~ATTR_WDUMMY; | |
1212 } | |
1213 } else if (term.line[y][x].mode & ATTR_WDUMMY) { | |
1214 term.line[y][x-1].u = ' '; | |
1215 term.line[y][x-1].mode &= ~ATTR_WIDE; | |
1216 } | |
1217 | |
1218 term.dirty[y] = 1; | |
1219 term.line[y][x] = *attr; | |
1220 term.line[y][x].u = u; | |
1221 } | |
1222 | |
1223 void | |
1224 tclearregion(int x1, int y1, int x2, int y2) | |
1225 { | |
1226 int x, y, temp; | |
1227 Glyph *gp; | |
1228 | |
1229 if (x1 > x2) | |
1230 temp = x1, x1 = x2, x2 = temp; | |
1231 if (y1 > y2) | |
1232 temp = y1, y1 = y2, y2 = temp; | |
1233 | |
1234 LIMIT(x1, 0, term.col-1); | |
1235 LIMIT(x2, 0, term.col-1); | |
1236 LIMIT(y1, 0, term.row-1); | |
1237 LIMIT(y2, 0, term.row-1); | |
1238 | |
1239 for (y = y1; y <= y2; y++) { | |
1240 term.dirty[y] = 1; | |
1241 for (x = x1; x <= x2; x++) { | |
1242 gp = &term.line[y][x]; | |
1243 if (selected(x, y)) | |
1244 selclear(); | |
1245 gp->fg = term.c.attr.fg; | |
1246 gp->bg = term.c.attr.bg; | |
1247 gp->mode = 0; | |
1248 gp->u = ' '; | |
1249 } | |
1250 } | |
1251 } | |
1252 | |
1253 void | |
1254 tdeletechar(int n) | |
1255 { | |
1256 int dst, src, size; | |
1257 Glyph *line; | |
1258 | |
1259 LIMIT(n, 0, term.col - term.c.x); | |
1260 | |
1261 dst = term.c.x; | |
1262 src = term.c.x + n; | |
1263 size = term.col - src; | |
1264 line = term.line[term.c.y]; | |
1265 | |
1266 memmove(&line[dst], &line[src], size * sizeof(Glyph)); | |
1267 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y); | |
1268 } | |
1269 | |
1270 void | |
1271 tinsertblank(int n) | |
1272 { | |
1273 int dst, src, size; | |
1274 Glyph *line; | |
1275 | |
1276 LIMIT(n, 0, term.col - term.c.x); | |
1277 | |
1278 dst = term.c.x + n; | |
1279 src = term.c.x; | |
1280 size = term.col - dst; | |
1281 line = term.line[term.c.y]; | |
1282 | |
1283 memmove(&line[dst], &line[src], size * sizeof(Glyph)); | |
1284 tclearregion(src, term.c.y, dst - 1, term.c.y); | |
1285 } | |
1286 | |
1287 void | |
1288 tinsertblankline(int n) | |
1289 { | |
1290 if (BETWEEN(term.c.y, term.top, term.bot)) | |
1291 tscrolldown(term.c.y, n); | |
1292 } | |
1293 | |
1294 void | |
1295 tdeleteline(int n) | |
1296 { | |
1297 if (BETWEEN(term.c.y, term.top, term.bot)) | |
1298 tscrollup(term.c.y, n); | |
1299 } | |
1300 | |
1301 int32_t | |
1302 tdefcolor(const int *attr, int *npar, int l) | |
1303 { | |
1304 int32_t idx = -1; | |
1305 uint r, g, b; | |
1306 | |
1307 switch (attr[*npar + 1]) { | |
1308 case 2: /* direct color in RGB space */ | |
1309 if (*npar + 4 >= l) { | |
1310 fprintf(stderr, | |
1311 "erresc(38): Incorrect number of paramet… | |
1312 *npar); | |
1313 break; | |
1314 } | |
1315 r = attr[*npar + 2]; | |
1316 g = attr[*npar + 3]; | |
1317 b = attr[*npar + 4]; | |
1318 *npar += 4; | |
1319 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWE… | |
1320 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u… | |
1321 r, g, b); | |
1322 else | |
1323 idx = TRUECOLOR(r, g, b); | |
1324 break; | |
1325 case 5: /* indexed color */ | |
1326 if (*npar + 2 >= l) { | |
1327 fprintf(stderr, | |
1328 "erresc(38): Incorrect number of paramet… | |
1329 *npar); | |
1330 break; | |
1331 } | |
1332 *npar += 2; | |
1333 if (!BETWEEN(attr[*npar], 0, 255)) | |
1334 fprintf(stderr, "erresc: bad fgcolor %d\n", attr… | |
1335 else | |
1336 idx = attr[*npar]; | |
1337 break; | |
1338 case 0: /* implemented defined (only foreground) */ | |
1339 case 1: /* transparent */ | |
1340 case 3: /* direct color in CMY space */ | |
1341 case 4: /* direct color in CMYK space */ | |
1342 default: | |
1343 fprintf(stderr, | |
1344 "erresc(38): gfx attr %d unknown\n", attr[*npar]… | |
1345 break; | |
1346 } | |
1347 | |
1348 return idx; | |
1349 } | |
1350 | |
1351 void | |
1352 tsetattr(const int *attr, int l) | |
1353 { | |
1354 int i; | |
1355 int32_t idx; | |
1356 | |
1357 for (i = 0; i < l; i++) { | |
1358 switch (attr[i]) { | |
1359 case 0: | |
1360 term.c.attr.mode &= ~( | |
1361 ATTR_BOLD | | |
1362 ATTR_FAINT | | |
1363 ATTR_ITALIC | | |
1364 ATTR_UNDERLINE | | |
1365 ATTR_BLINK | | |
1366 ATTR_REVERSE | | |
1367 ATTR_INVISIBLE | | |
1368 ATTR_STRUCK ); | |
1369 term.c.attr.fg = defaultfg; | |
1370 term.c.attr.bg = defaultbg; | |
1371 break; | |
1372 case 1: | |
1373 term.c.attr.mode |= ATTR_BOLD; | |
1374 break; | |
1375 case 2: | |
1376 term.c.attr.mode |= ATTR_FAINT; | |
1377 break; | |
1378 case 3: | |
1379 term.c.attr.mode |= ATTR_ITALIC; | |
1380 break; | |
1381 case 4: | |
1382 term.c.attr.mode |= ATTR_UNDERLINE; | |
1383 break; | |
1384 case 5: /* slow blink */ | |
1385 /* FALLTHROUGH */ | |
1386 case 6: /* rapid blink */ | |
1387 term.c.attr.mode |= ATTR_BLINK; | |
1388 break; | |
1389 case 7: | |
1390 term.c.attr.mode |= ATTR_REVERSE; | |
1391 break; | |
1392 case 8: | |
1393 term.c.attr.mode |= ATTR_INVISIBLE; | |
1394 break; | |
1395 case 9: | |
1396 term.c.attr.mode |= ATTR_STRUCK; | |
1397 break; | |
1398 case 22: | |
1399 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT); | |
1400 break; | |
1401 case 23: | |
1402 term.c.attr.mode &= ~ATTR_ITALIC; | |
1403 break; | |
1404 case 24: | |
1405 term.c.attr.mode &= ~ATTR_UNDERLINE; | |
1406 break; | |
1407 case 25: | |
1408 term.c.attr.mode &= ~ATTR_BLINK; | |
1409 break; | |
1410 case 27: | |
1411 term.c.attr.mode &= ~ATTR_REVERSE; | |
1412 break; | |
1413 case 28: | |
1414 term.c.attr.mode &= ~ATTR_INVISIBLE; | |
1415 break; | |
1416 case 29: | |
1417 term.c.attr.mode &= ~ATTR_STRUCK; | |
1418 break; | |
1419 case 38: | |
1420 if ((idx = tdefcolor(attr, &i, l)) >= 0) | |
1421 term.c.attr.fg = idx; | |
1422 break; | |
1423 case 39: | |
1424 term.c.attr.fg = defaultfg; | |
1425 break; | |
1426 case 48: | |
1427 if ((idx = tdefcolor(attr, &i, l)) >= 0) | |
1428 term.c.attr.bg = idx; | |
1429 break; | |
1430 case 49: | |
1431 term.c.attr.bg = defaultbg; | |
1432 break; | |
1433 default: | |
1434 if (BETWEEN(attr[i], 30, 37)) { | |
1435 term.c.attr.fg = attr[i] - 30; | |
1436 } else if (BETWEEN(attr[i], 40, 47)) { | |
1437 term.c.attr.bg = attr[i] - 40; | |
1438 } else if (BETWEEN(attr[i], 90, 97)) { | |
1439 term.c.attr.fg = attr[i] - 90 + 8; | |
1440 } else if (BETWEEN(attr[i], 100, 107)) { | |
1441 term.c.attr.bg = attr[i] - 100 + 8; | |
1442 } else { | |
1443 fprintf(stderr, | |
1444 "erresc(default): gfx attr %d un… | |
1445 attr[i]); | |
1446 csidump(); | |
1447 } | |
1448 break; | |
1449 } | |
1450 } | |
1451 } | |
1452 | |
1453 void | |
1454 tsetscroll(int t, int b) | |
1455 { | |
1456 int temp; | |
1457 | |
1458 LIMIT(t, 0, term.row-1); | |
1459 LIMIT(b, 0, term.row-1); | |
1460 if (t > b) { | |
1461 temp = t; | |
1462 t = b; | |
1463 b = temp; | |
1464 } | |
1465 term.top = t; | |
1466 term.bot = b; | |
1467 } | |
1468 | |
1469 void | |
1470 tsetmode(int priv, int set, const int *args, int narg) | |
1471 { | |
1472 int alt; const int *lim; | |
1473 | |
1474 for (lim = args + narg; args < lim; ++args) { | |
1475 if (priv) { | |
1476 switch (*args) { | |
1477 case 1: /* DECCKM -- Cursor key */ | |
1478 xsetmode(set, MODE_APPCURSOR); | |
1479 break; | |
1480 case 5: /* DECSCNM -- Reverse video */ | |
1481 xsetmode(set, MODE_REVERSE); | |
1482 break; | |
1483 case 6: /* DECOM -- Origin */ | |
1484 MODBIT(term.c.state, set, CURSOR_ORIGIN); | |
1485 tmoveato(0, 0); | |
1486 break; | |
1487 case 7: /* DECAWM -- Auto wrap */ | |
1488 MODBIT(term.mode, set, MODE_WRAP); | |
1489 break; | |
1490 case 0: /* Error (IGNORED) */ | |
1491 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */ | |
1492 case 3: /* DECCOLM -- Column (IGNORED) */ | |
1493 case 4: /* DECSCLM -- Scroll (IGNORED) */ | |
1494 case 8: /* DECARM -- Auto repeat (IGNORED) */ | |
1495 case 18: /* DECPFF -- Printer feed (IGNORED) */ | |
1496 case 19: /* DECPEX -- Printer extent (IGNORED) */ | |
1497 case 42: /* DECNRCM -- National characters (IGNO… | |
1498 case 12: /* att610 -- Start blinking cursor (IGN… | |
1499 break; | |
1500 case 25: /* DECTCEM -- Text Cursor Enable Mode */ | |
1501 xsetmode(!set, MODE_HIDE); | |
1502 break; | |
1503 case 9: /* X10 mouse compatibility mode */ | |
1504 xsetpointermotion(0); | |
1505 xsetmode(0, MODE_MOUSE); | |
1506 xsetmode(set, MODE_MOUSEX10); | |
1507 break; | |
1508 case 1000: /* 1000: report button press */ | |
1509 xsetpointermotion(0); | |
1510 xsetmode(0, MODE_MOUSE); | |
1511 xsetmode(set, MODE_MOUSEBTN); | |
1512 break; | |
1513 case 1002: /* 1002: report motion on button pres… | |
1514 xsetpointermotion(0); | |
1515 xsetmode(0, MODE_MOUSE); | |
1516 xsetmode(set, MODE_MOUSEMOTION); | |
1517 break; | |
1518 case 1003: /* 1003: enable all mouse motions */ | |
1519 xsetpointermotion(set); | |
1520 xsetmode(0, MODE_MOUSE); | |
1521 xsetmode(set, MODE_MOUSEMANY); | |
1522 break; | |
1523 case 1004: /* 1004: send focus events to tty */ | |
1524 xsetmode(set, MODE_FOCUS); | |
1525 break; | |
1526 case 1006: /* 1006: extended reporting mode */ | |
1527 xsetmode(set, MODE_MOUSESGR); | |
1528 break; | |
1529 case 1034: | |
1530 xsetmode(set, MODE_8BIT); | |
1531 break; | |
1532 case 1049: /* swap screen & set/restore cursor a… | |
1533 if (!allowaltscreen) | |
1534 break; | |
1535 tcursor((set) ? CURSOR_SAVE : CURSOR_LOA… | |
1536 /* FALLTHROUGH */ | |
1537 case 47: /* swap screen */ | |
1538 case 1047: | |
1539 if (!allowaltscreen) | |
1540 break; | |
1541 alt = IS_SET(MODE_ALTSCREEN); | |
1542 if (alt) { | |
1543 tclearregion(0, 0, term.col-1, | |
1544 term.row-1); | |
1545 } | |
1546 if (set ^ alt) /* set is always 1 or 0 */ | |
1547 tswapscreen(); | |
1548 if (*args != 1049) | |
1549 break; | |
1550 /* FALLTHROUGH */ | |
1551 case 1048: | |
1552 tcursor((set) ? CURSOR_SAVE : CURSOR_LOA… | |
1553 break; | |
1554 case 2004: /* 2004: bracketed paste mode */ | |
1555 xsetmode(set, MODE_BRCKTPASTE); | |
1556 break; | |
1557 /* Not implemented mouse modes. See comments the… | |
1558 case 1001: /* mouse highlight mode; can hang the | |
1559 terminal by design when implemente… | |
1560 case 1005: /* UTF-8 mouse mode; will confuse | |
1561 applications not supporting UTF-8 | |
1562 and luit. */ | |
1563 case 1015: /* urxvt mangled mouse mode; incompat… | |
1564 and can be mistaken for other cont… | |
1565 codes. */ | |
1566 break; | |
1567 default: | |
1568 fprintf(stderr, | |
1569 "erresc: unknown private set/res… | |
1570 *args); | |
1571 break; | |
1572 } | |
1573 } else { | |
1574 switch (*args) { | |
1575 case 0: /* Error (IGNORED) */ | |
1576 break; | |
1577 case 2: | |
1578 xsetmode(set, MODE_KBDLOCK); | |
1579 break; | |
1580 case 4: /* IRM -- Insertion-replacement */ | |
1581 MODBIT(term.mode, set, MODE_INSERT); | |
1582 break; | |
1583 case 12: /* SRM -- Send/Receive */ | |
1584 MODBIT(term.mode, !set, MODE_ECHO); | |
1585 break; | |
1586 case 20: /* LNM -- Linefeed/new line */ | |
1587 MODBIT(term.mode, set, MODE_CRLF); | |
1588 break; | |
1589 default: | |
1590 fprintf(stderr, | |
1591 "erresc: unknown set/reset mode … | |
1592 *args); | |
1593 break; | |
1594 } | |
1595 } | |
1596 } | |
1597 } | |
1598 | |
1599 void | |
1600 csihandle(void) | |
1601 { | |
1602 char buf[40]; | |
1603 int len; | |
1604 | |
1605 switch (csiescseq.mode[0]) { | |
1606 default: | |
1607 unknown: | |
1608 fprintf(stderr, "erresc: unknown csi "); | |
1609 csidump(); | |
1610 /* die(""); */ | |
1611 break; | |
1612 case '@': /* ICH -- Insert <n> blank char */ | |
1613 DEFAULT(csiescseq.arg[0], 1); | |
1614 tinsertblank(csiescseq.arg[0]); | |
1615 break; | |
1616 case 'A': /* CUU -- Cursor <n> Up */ | |
1617 DEFAULT(csiescseq.arg[0], 1); | |
1618 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]); | |
1619 break; | |
1620 case 'B': /* CUD -- Cursor <n> Down */ | |
1621 case 'e': /* VPR --Cursor <n> Down */ | |
1622 DEFAULT(csiescseq.arg[0], 1); | |
1623 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]); | |
1624 break; | |
1625 case 'i': /* MC -- Media Copy */ | |
1626 switch (csiescseq.arg[0]) { | |
1627 case 0: | |
1628 tdump(); | |
1629 break; | |
1630 case 1: | |
1631 tdumpline(term.c.y); | |
1632 break; | |
1633 case 2: | |
1634 tdumpsel(); | |
1635 break; | |
1636 case 4: | |
1637 term.mode &= ~MODE_PRINT; | |
1638 break; | |
1639 case 5: | |
1640 term.mode |= MODE_PRINT; | |
1641 break; | |
1642 } | |
1643 break; | |
1644 case 'c': /* DA -- Device Attributes */ | |
1645 if (csiescseq.arg[0] == 0) | |
1646 ttywrite(vtiden, strlen(vtiden), 0); | |
1647 break; | |
1648 case 'b': /* REP -- if last char is printable print it <n> more … | |
1649 LIMIT(csiescseq.arg[0], 1, 65535); | |
1650 if (term.lastc) | |
1651 while (csiescseq.arg[0]-- > 0) | |
1652 tputc(term.lastc); | |
1653 break; | |
1654 case 'C': /* CUF -- Cursor <n> Forward */ | |
1655 case 'a': /* HPR -- Cursor <n> Forward */ | |
1656 DEFAULT(csiescseq.arg[0], 1); | |
1657 tmoveto(term.c.x+csiescseq.arg[0], term.c.y); | |
1658 break; | |
1659 case 'D': /* CUB -- Cursor <n> Backward */ | |
1660 DEFAULT(csiescseq.arg[0], 1); | |
1661 tmoveto(term.c.x-csiescseq.arg[0], term.c.y); | |
1662 break; | |
1663 case 'E': /* CNL -- Cursor <n> Down and first col */ | |
1664 DEFAULT(csiescseq.arg[0], 1); | |
1665 tmoveto(0, term.c.y+csiescseq.arg[0]); | |
1666 break; | |
1667 case 'F': /* CPL -- Cursor <n> Up and first col */ | |
1668 DEFAULT(csiescseq.arg[0], 1); | |
1669 tmoveto(0, term.c.y-csiescseq.arg[0]); | |
1670 break; | |
1671 case 'g': /* TBC -- Tabulation clear */ | |
1672 switch (csiescseq.arg[0]) { | |
1673 case 0: /* clear current tab stop */ | |
1674 term.tabs[term.c.x] = 0; | |
1675 break; | |
1676 case 3: /* clear all the tabs */ | |
1677 memset(term.tabs, 0, term.col * sizeof(*term.tab… | |
1678 break; | |
1679 default: | |
1680 goto unknown; | |
1681 } | |
1682 break; | |
1683 case 'G': /* CHA -- Move to <col> */ | |
1684 case '`': /* HPA */ | |
1685 DEFAULT(csiescseq.arg[0], 1); | |
1686 tmoveto(csiescseq.arg[0]-1, term.c.y); | |
1687 break; | |
1688 case 'H': /* CUP -- Move to <row> <col> */ | |
1689 case 'f': /* HVP */ | |
1690 DEFAULT(csiescseq.arg[0], 1); | |
1691 DEFAULT(csiescseq.arg[1], 1); | |
1692 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1); | |
1693 break; | |
1694 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */ | |
1695 DEFAULT(csiescseq.arg[0], 1); | |
1696 tputtab(csiescseq.arg[0]); | |
1697 break; | |
1698 case 'J': /* ED -- Clear screen */ | |
1699 switch (csiescseq.arg[0]) { | |
1700 case 0: /* below */ | |
1701 tclearregion(term.c.x, term.c.y, term.col-1, ter… | |
1702 if (term.c.y < term.row-1) { | |
1703 tclearregion(0, term.c.y+1, term.col-1, | |
1704 term.row-1); | |
1705 } | |
1706 break; | |
1707 case 1: /* above */ | |
1708 if (term.c.y > 0) | |
1709 tclearregion(0, 0, term.col-1, term.c.y-… | |
1710 tclearregion(0, term.c.y, term.c.x, term.c.y); | |
1711 break; | |
1712 case 2: /* all */ | |
1713 tclearregion(0, 0, term.col-1, term.row-1); | |
1714 break; | |
1715 default: | |
1716 goto unknown; | |
1717 } | |
1718 break; | |
1719 case 'K': /* EL -- Clear line */ | |
1720 switch (csiescseq.arg[0]) { | |
1721 case 0: /* right */ | |
1722 tclearregion(term.c.x, term.c.y, term.col-1, | |
1723 term.c.y); | |
1724 break; | |
1725 case 1: /* left */ | |
1726 tclearregion(0, term.c.y, term.c.x, term.c.y); | |
1727 break; | |
1728 case 2: /* all */ | |
1729 tclearregion(0, term.c.y, term.col-1, term.c.y); | |
1730 break; | |
1731 } | |
1732 break; | |
1733 case 'S': /* SU -- Scroll <n> line up */ | |
1734 if (csiescseq.priv) break; | |
1735 DEFAULT(csiescseq.arg[0], 1); | |
1736 tscrollup(term.top, csiescseq.arg[0]); | |
1737 break; | |
1738 case 'T': /* SD -- Scroll <n> line down */ | |
1739 DEFAULT(csiescseq.arg[0], 1); | |
1740 tscrolldown(term.top, csiescseq.arg[0]); | |
1741 break; | |
1742 case 'L': /* IL -- Insert <n> blank lines */ | |
1743 DEFAULT(csiescseq.arg[0], 1); | |
1744 tinsertblankline(csiescseq.arg[0]); | |
1745 break; | |
1746 case 'l': /* RM -- Reset Mode */ | |
1747 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.nar… | |
1748 break; | |
1749 case 'M': /* DL -- Delete <n> lines */ | |
1750 DEFAULT(csiescseq.arg[0], 1); | |
1751 tdeleteline(csiescseq.arg[0]); | |
1752 break; | |
1753 case 'X': /* ECH -- Erase <n> char */ | |
1754 DEFAULT(csiescseq.arg[0], 1); | |
1755 tclearregion(term.c.x, term.c.y, | |
1756 term.c.x + csiescseq.arg[0] - 1, term.c.… | |
1757 break; | |
1758 case 'P': /* DCH -- Delete <n> char */ | |
1759 DEFAULT(csiescseq.arg[0], 1); | |
1760 tdeletechar(csiescseq.arg[0]); | |
1761 break; | |
1762 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */ | |
1763 DEFAULT(csiescseq.arg[0], 1); | |
1764 tputtab(-csiescseq.arg[0]); | |
1765 break; | |
1766 case 'd': /* VPA -- Move to <row> */ | |
1767 DEFAULT(csiescseq.arg[0], 1); | |
1768 tmoveato(term.c.x, csiescseq.arg[0]-1); | |
1769 break; | |
1770 case 'h': /* SM -- Set terminal mode */ | |
1771 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.nar… | |
1772 break; | |
1773 case 'm': /* SGR -- Terminal attribute (color) */ | |
1774 tsetattr(csiescseq.arg, csiescseq.narg); | |
1775 break; | |
1776 case 'n': /* DSR -- Device Status Report */ | |
1777 switch (csiescseq.arg[0]) { | |
1778 case 5: /* Status Report "OK" `0n` */ | |
1779 ttywrite("\033[0n", sizeof("\033[0n") - 1, 0); | |
1780 break; | |
1781 case 6: /* Report Cursor Position (CPR) "<row>;<column>R… | |
1782 len = snprintf(buf, sizeof(buf), "\033[%i;%iR", | |
1783 term.c.y+1, term.c.x+1); | |
1784 ttywrite(buf, len, 0); | |
1785 break; | |
1786 default: | |
1787 goto unknown; | |
1788 } | |
1789 break; | |
1790 case 'r': /* DECSTBM -- Set Scrolling Region */ | |
1791 if (csiescseq.priv) { | |
1792 goto unknown; | |
1793 } else { | |
1794 DEFAULT(csiescseq.arg[0], 1); | |
1795 DEFAULT(csiescseq.arg[1], term.row); | |
1796 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-… | |
1797 tmoveato(0, 0); | |
1798 } | |
1799 break; | |
1800 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */ | |
1801 tcursor(CURSOR_SAVE); | |
1802 break; | |
1803 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */ | |
1804 if (csiescseq.priv) { | |
1805 goto unknown; | |
1806 } else { | |
1807 tcursor(CURSOR_LOAD); | |
1808 } | |
1809 break; | |
1810 case ' ': | |
1811 switch (csiescseq.mode[1]) { | |
1812 case 'q': /* DECSCUSR -- Set Cursor Style */ | |
1813 if (xsetcursor(csiescseq.arg[0])) | |
1814 goto unknown; | |
1815 break; | |
1816 default: | |
1817 goto unknown; | |
1818 } | |
1819 break; | |
1820 } | |
1821 } | |
1822 | |
1823 void | |
1824 csidump(void) | |
1825 { | |
1826 size_t i; | |
1827 uint c; | |
1828 | |
1829 fprintf(stderr, "ESC["); | |
1830 for (i = 0; i < csiescseq.len; i++) { | |
1831 c = csiescseq.buf[i] & 0xff; | |
1832 if (isprint(c)) { | |
1833 putc(c, stderr); | |
1834 } else if (c == '\n') { | |
1835 fprintf(stderr, "(\\n)"); | |
1836 } else if (c == '\r') { | |
1837 fprintf(stderr, "(\\r)"); | |
1838 } else if (c == 0x1b) { | |
1839 fprintf(stderr, "(\\e)"); | |
1840 } else { | |
1841 fprintf(stderr, "(%02x)", c); | |
1842 } | |
1843 } | |
1844 putc('\n', stderr); | |
1845 } | |
1846 | |
1847 void | |
1848 csireset(void) | |
1849 { | |
1850 memset(&csiescseq, 0, sizeof(csiescseq)); | |
1851 } | |
1852 | |
1853 void | |
1854 osc_color_response(int num, int index, int is_osc4) | |
1855 { | |
1856 int n; | |
1857 char buf[32]; | |
1858 unsigned char r, g, b; | |
1859 | |
1860 if (xgetcolor(is_osc4 ? num : index, &r, &g, &b)) { | |
1861 fprintf(stderr, "erresc: failed to fetch %s color %d\n", | |
1862 is_osc4 ? "osc4" : "osc", | |
1863 is_osc4 ? num : index); | |
1864 return; | |
1865 } | |
1866 | |
1867 n = snprintf(buf, sizeof buf, "\033]%s%d;rgb:%02x%02x/%02x%02x/%… | |
1868 is_osc4 ? "4;" : "", num, r, r, g, g, b, b); | |
1869 if (n < 0 || n >= sizeof(buf)) { | |
1870 fprintf(stderr, "error: %s while printing %s response\n", | |
1871 n < 0 ? "snprintf failed" : "truncation occurred… | |
1872 is_osc4 ? "osc4" : "osc"); | |
1873 } else { | |
1874 ttywrite(buf, n, 1); | |
1875 } | |
1876 } | |
1877 | |
1878 void | |
1879 strhandle(void) | |
1880 { | |
1881 char *p = NULL, *dec; | |
1882 int j, narg, par; | |
1883 const struct { int idx; char *str; } osc_table[] = { | |
1884 { defaultfg, "foreground" }, | |
1885 { defaultbg, "background" }, | |
1886 { defaultcs, "cursor" } | |
1887 }; | |
1888 | |
1889 term.esc &= ~(ESC_STR_END|ESC_STR); | |
1890 strparse(); | |
1891 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0; | |
1892 | |
1893 switch (strescseq.type) { | |
1894 case ']': /* OSC -- Operating System Command */ | |
1895 switch (par) { | |
1896 case 0: | |
1897 if (narg > 1) { | |
1898 xsettitle(strescseq.args[1]); | |
1899 xseticontitle(strescseq.args[1]); | |
1900 } | |
1901 return; | |
1902 case 1: | |
1903 if (narg > 1) | |
1904 xseticontitle(strescseq.args[1]); | |
1905 return; | |
1906 case 2: | |
1907 if (narg > 1) | |
1908 xsettitle(strescseq.args[1]); | |
1909 return; | |
1910 case 52: | |
1911 if (narg > 2 && allowwindowops) { | |
1912 dec = base64dec(strescseq.args[2]); | |
1913 if (dec) { | |
1914 xsetsel(dec); | |
1915 xclipcopy(); | |
1916 } else { | |
1917 fprintf(stderr, "erresc: invalid… | |
1918 } | |
1919 } | |
1920 return; | |
1921 case 10: | |
1922 case 11: | |
1923 case 12: | |
1924 if (narg < 2) | |
1925 break; | |
1926 p = strescseq.args[1]; | |
1927 if ((j = par - 10) < 0 || j >= LEN(osc_table)) | |
1928 break; /* shouldn't be possible */ | |
1929 | |
1930 if (!strcmp(p, "?")) { | |
1931 osc_color_response(par, osc_table[j].idx… | |
1932 } else if (xsetcolorname(osc_table[j].idx, p)) { | |
1933 fprintf(stderr, "erresc: invalid %s colo… | |
1934 osc_table[j].str, p); | |
1935 } else { | |
1936 tfulldirt(); | |
1937 } | |
1938 return; | |
1939 case 4: /* color set */ | |
1940 if (narg < 3) | |
1941 break; | |
1942 p = strescseq.args[2]; | |
1943 /* FALLTHROUGH */ | |
1944 case 104: /* color reset */ | |
1945 j = (narg > 1) ? atoi(strescseq.args[1]) : -1; | |
1946 | |
1947 if (p && !strcmp(p, "?")) { | |
1948 osc_color_response(j, 0, 1); | |
1949 } else if (xsetcolorname(j, p)) { | |
1950 if (par == 104 && narg <= 1) { | |
1951 xloadcols(); | |
1952 return; /* color reset without p… | |
1953 } | |
1954 fprintf(stderr, "erresc: invalid color j… | |
1955 j, p ? p : "(null)"); | |
1956 } else { | |
1957 /* | |
1958 * TODO if defaultbg color is changed, b… | |
1959 * are dirty | |
1960 */ | |
1961 tfulldirt(); | |
1962 } | |
1963 return; | |
1964 } | |
1965 break; | |
1966 case 'k': /* old title set compatibility */ | |
1967 xsettitle(strescseq.args[0]); | |
1968 return; | |
1969 case 'P': /* DCS -- Device Control String */ | |
1970 case '_': /* APC -- Application Program Command */ | |
1971 case '^': /* PM -- Privacy Message */ | |
1972 return; | |
1973 } | |
1974 | |
1975 fprintf(stderr, "erresc: unknown str "); | |
1976 strdump(); | |
1977 } | |
1978 | |
1979 void | |
1980 strparse(void) | |
1981 { | |
1982 int c; | |
1983 char *p = strescseq.buf; | |
1984 | |
1985 strescseq.narg = 0; | |
1986 strescseq.buf[strescseq.len] = '\0'; | |
1987 | |
1988 if (*p == '\0') | |
1989 return; | |
1990 | |
1991 while (strescseq.narg < STR_ARG_SIZ) { | |
1992 strescseq.args[strescseq.narg++] = p; | |
1993 while ((c = *p) != ';' && c != '\0') | |
1994 ++p; | |
1995 if (c == '\0') | |
1996 return; | |
1997 *p++ = '\0'; | |
1998 } | |
1999 } | |
2000 | |
2001 void | |
2002 strdump(void) | |
2003 { | |
2004 size_t i; | |
2005 uint c; | |
2006 | |
2007 fprintf(stderr, "ESC%c", strescseq.type); | |
2008 for (i = 0; i < strescseq.len; i++) { | |
2009 c = strescseq.buf[i] & 0xff; | |
2010 if (c == '\0') { | |
2011 putc('\n', stderr); | |
2012 return; | |
2013 } else if (isprint(c)) { | |
2014 putc(c, stderr); | |
2015 } else if (c == '\n') { | |
2016 fprintf(stderr, "(\\n)"); | |
2017 } else if (c == '\r') { | |
2018 fprintf(stderr, "(\\r)"); | |
2019 } else if (c == 0x1b) { | |
2020 fprintf(stderr, "(\\e)"); | |
2021 } else { | |
2022 fprintf(stderr, "(%02x)", c); | |
2023 } | |
2024 } | |
2025 fprintf(stderr, "ESC\\\n"); | |
2026 } | |
2027 | |
2028 void | |
2029 strreset(void) | |
2030 { | |
2031 strescseq = (STREscape){ | |
2032 .buf = xrealloc(strescseq.buf, STR_BUF_SIZ), | |
2033 .siz = STR_BUF_SIZ, | |
2034 }; | |
2035 } | |
2036 | |
2037 void | |
2038 sendbreak(const Arg *arg) | |
2039 { | |
2040 if (tcsendbreak(cmdfd, 0)) | |
2041 perror("Error sending break"); | |
2042 } | |
2043 | |
2044 void | |
2045 tprinter(char *s, size_t len) | |
2046 { | |
2047 if (iofd != -1 && xwrite(iofd, s, len) < 0) { | |
2048 perror("Error writing to output file"); | |
2049 close(iofd); | |
2050 iofd = -1; | |
2051 } | |
2052 } | |
2053 | |
2054 void | |
2055 toggleprinter(const Arg *arg) | |
2056 { | |
2057 term.mode ^= MODE_PRINT; | |
2058 } | |
2059 | |
2060 void | |
2061 printscreen(const Arg *arg) | |
2062 { | |
2063 tdump(); | |
2064 } | |
2065 | |
2066 void | |
2067 printsel(const Arg *arg) | |
2068 { | |
2069 tdumpsel(); | |
2070 } | |
2071 | |
2072 void | |
2073 tdumpsel(void) | |
2074 { | |
2075 char *ptr; | |
2076 | |
2077 if ((ptr = getsel())) { | |
2078 tprinter(ptr, strlen(ptr)); | |
2079 free(ptr); | |
2080 } | |
2081 } | |
2082 | |
2083 void | |
2084 tdumpline(int n) | |
2085 { | |
2086 char buf[UTF_SIZ]; | |
2087 const Glyph *bp, *end; | |
2088 | |
2089 bp = &term.line[n][0]; | |
2090 end = &bp[MIN(tlinelen(n), term.col) - 1]; | |
2091 if (bp != end || bp->u != ' ') { | |
2092 for ( ; bp <= end; ++bp) | |
2093 tprinter(buf, utf8encode(bp->u, buf)); | |
2094 } | |
2095 tprinter("\n", 1); | |
2096 } | |
2097 | |
2098 void | |
2099 tdump(void) | |
2100 { | |
2101 int i; | |
2102 | |
2103 for (i = 0; i < term.row; ++i) | |
2104 tdumpline(i); | |
2105 } | |
2106 | |
2107 void | |
2108 tputtab(int n) | |
2109 { | |
2110 uint x = term.c.x; | |
2111 | |
2112 if (n > 0) { | |
2113 while (x < term.col && n--) | |
2114 for (++x; x < term.col && !term.tabs[x]; ++x) | |
2115 /* nothing */ ; | |
2116 } else if (n < 0) { | |
2117 while (x > 0 && n++) | |
2118 for (--x; x > 0 && !term.tabs[x]; --x) | |
2119 /* nothing */ ; | |
2120 } | |
2121 term.c.x = LIMIT(x, 0, term.col-1); | |
2122 } | |
2123 | |
2124 void | |
2125 tdefutf8(char ascii) | |
2126 { | |
2127 if (ascii == 'G') | |
2128 term.mode |= MODE_UTF8; | |
2129 else if (ascii == '@') | |
2130 term.mode &= ~MODE_UTF8; | |
2131 } | |
2132 | |
2133 void | |
2134 tdeftran(char ascii) | |
2135 { | |
2136 static char cs[] = "0B"; | |
2137 static int vcs[] = {CS_GRAPHIC0, CS_USA}; | |
2138 char *p; | |
2139 | |
2140 if ((p = strchr(cs, ascii)) == NULL) { | |
2141 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", asc… | |
2142 } else { | |
2143 term.trantbl[term.icharset] = vcs[p - cs]; | |
2144 } | |
2145 } | |
2146 | |
2147 void | |
2148 tdectest(char c) | |
2149 { | |
2150 int x, y; | |
2151 | |
2152 if (c == '8') { /* DEC screen alignment test. */ | |
2153 for (x = 0; x < term.col; ++x) { | |
2154 for (y = 0; y < term.row; ++y) | |
2155 tsetchar('E', &term.c.attr, x, y); | |
2156 } | |
2157 } | |
2158 } | |
2159 | |
2160 void | |
2161 tstrsequence(uchar c) | |
2162 { | |
2163 switch (c) { | |
2164 case 0x90: /* DCS -- Device Control String */ | |
2165 c = 'P'; | |
2166 break; | |
2167 case 0x9f: /* APC -- Application Program Command */ | |
2168 c = '_'; | |
2169 break; | |
2170 case 0x9e: /* PM -- Privacy Message */ | |
2171 c = '^'; | |
2172 break; | |
2173 case 0x9d: /* OSC -- Operating System Command */ | |
2174 c = ']'; | |
2175 break; | |
2176 } | |
2177 strreset(); | |
2178 strescseq.type = c; | |
2179 term.esc |= ESC_STR; | |
2180 } | |
2181 | |
2182 void | |
2183 tcontrolcode(uchar ascii) | |
2184 { | |
2185 switch (ascii) { | |
2186 case '\t': /* HT */ | |
2187 tputtab(1); | |
2188 return; | |
2189 case '\b': /* BS */ | |
2190 tmoveto(term.c.x-1, term.c.y); | |
2191 return; | |
2192 case '\r': /* CR */ | |
2193 tmoveto(0, term.c.y); | |
2194 return; | |
2195 case '\f': /* LF */ | |
2196 case '\v': /* VT */ | |
2197 case '\n': /* LF */ | |
2198 /* go to first col if the mode is set */ | |
2199 tnewline(IS_SET(MODE_CRLF)); | |
2200 return; | |
2201 case '\a': /* BEL */ | |
2202 if (term.esc & ESC_STR_END) { | |
2203 /* backwards compatibility to xterm */ | |
2204 strhandle(); | |
2205 } else { | |
2206 xbell(); | |
2207 } | |
2208 break; | |
2209 case '\033': /* ESC */ | |
2210 csireset(); | |
2211 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST); | |
2212 term.esc |= ESC_START; | |
2213 return; | |
2214 case '\016': /* SO (LS1 -- Locking shift 1) */ | |
2215 case '\017': /* SI (LS0 -- Locking shift 0) */ | |
2216 term.charset = 1 - (ascii - '\016'); | |
2217 return; | |
2218 case '\032': /* SUB */ | |
2219 tsetchar('?', &term.c.attr, term.c.x, term.c.y); | |
2220 /* FALLTHROUGH */ | |
2221 case '\030': /* CAN */ | |
2222 csireset(); | |
2223 break; | |
2224 case '\005': /* ENQ (IGNORED) */ | |
2225 case '\000': /* NUL (IGNORED) */ | |
2226 case '\021': /* XON (IGNORED) */ | |
2227 case '\023': /* XOFF (IGNORED) */ | |
2228 case 0177: /* DEL (IGNORED) */ | |
2229 return; | |
2230 case 0x80: /* TODO: PAD */ | |
2231 case 0x81: /* TODO: HOP */ | |
2232 case 0x82: /* TODO: BPH */ | |
2233 case 0x83: /* TODO: NBH */ | |
2234 case 0x84: /* TODO: IND */ | |
2235 break; | |
2236 case 0x85: /* NEL -- Next line */ | |
2237 tnewline(1); /* always go to first col */ | |
2238 break; | |
2239 case 0x86: /* TODO: SSA */ | |
2240 case 0x87: /* TODO: ESA */ | |
2241 break; | |
2242 case 0x88: /* HTS -- Horizontal tab stop */ | |
2243 term.tabs[term.c.x] = 1; | |
2244 break; | |
2245 case 0x89: /* TODO: HTJ */ | |
2246 case 0x8a: /* TODO: VTS */ | |
2247 case 0x8b: /* TODO: PLD */ | |
2248 case 0x8c: /* TODO: PLU */ | |
2249 case 0x8d: /* TODO: RI */ | |
2250 case 0x8e: /* TODO: SS2 */ | |
2251 case 0x8f: /* TODO: SS3 */ | |
2252 case 0x91: /* TODO: PU1 */ | |
2253 case 0x92: /* TODO: PU2 */ | |
2254 case 0x93: /* TODO: STS */ | |
2255 case 0x94: /* TODO: CCH */ | |
2256 case 0x95: /* TODO: MW */ | |
2257 case 0x96: /* TODO: SPA */ | |
2258 case 0x97: /* TODO: EPA */ | |
2259 case 0x98: /* TODO: SOS */ | |
2260 case 0x99: /* TODO: SGCI */ | |
2261 break; | |
2262 case 0x9a: /* DECID -- Identify Terminal */ | |
2263 ttywrite(vtiden, strlen(vtiden), 0); | |
2264 break; | |
2265 case 0x9b: /* TODO: CSI */ | |
2266 case 0x9c: /* TODO: ST */ | |
2267 break; | |
2268 case 0x90: /* DCS -- Device Control String */ | |
2269 case 0x9d: /* OSC -- Operating System Command */ | |
2270 case 0x9e: /* PM -- Privacy Message */ | |
2271 case 0x9f: /* APC -- Application Program Command */ | |
2272 tstrsequence(ascii); | |
2273 return; | |
2274 } | |
2275 /* only CAN, SUB, \a and C1 chars interrupt a sequence */ | |
2276 term.esc &= ~(ESC_STR_END|ESC_STR); | |
2277 } | |
2278 | |
2279 /* | |
2280 * returns 1 when the sequence is finished and it hasn't to read | |
2281 * more characters for this sequence, otherwise 0 | |
2282 */ | |
2283 int | |
2284 eschandle(uchar ascii) | |
2285 { | |
2286 switch (ascii) { | |
2287 case '[': | |
2288 term.esc |= ESC_CSI; | |
2289 return 0; | |
2290 case '#': | |
2291 term.esc |= ESC_TEST; | |
2292 return 0; | |
2293 case '%': | |
2294 term.esc |= ESC_UTF8; | |
2295 return 0; | |
2296 case 'P': /* DCS -- Device Control String */ | |
2297 case '_': /* APC -- Application Program Command */ | |
2298 case '^': /* PM -- Privacy Message */ | |
2299 case ']': /* OSC -- Operating System Command */ | |
2300 case 'k': /* old title set compatibility */ | |
2301 tstrsequence(ascii); | |
2302 return 0; | |
2303 case 'n': /* LS2 -- Locking shift 2 */ | |
2304 case 'o': /* LS3 -- Locking shift 3 */ | |
2305 term.charset = 2 + (ascii - 'n'); | |
2306 break; | |
2307 case '(': /* GZD4 -- set primary charset G0 */ | |
2308 case ')': /* G1D4 -- set secondary charset G1 */ | |
2309 case '*': /* G2D4 -- set tertiary charset G2 */ | |
2310 case '+': /* G3D4 -- set quaternary charset G3 */ | |
2311 term.icharset = ascii - '('; | |
2312 term.esc |= ESC_ALTCHARSET; | |
2313 return 0; | |
2314 case 'D': /* IND -- Linefeed */ | |
2315 if (term.c.y == term.bot) { | |
2316 tscrollup(term.top, 1); | |
2317 } else { | |
2318 tmoveto(term.c.x, term.c.y+1); | |
2319 } | |
2320 break; | |
2321 case 'E': /* NEL -- Next line */ | |
2322 tnewline(1); /* always go to first col */ | |
2323 break; | |
2324 case 'H': /* HTS -- Horizontal tab stop */ | |
2325 term.tabs[term.c.x] = 1; | |
2326 break; | |
2327 case 'M': /* RI -- Reverse index */ | |
2328 if (term.c.y == term.top) { | |
2329 tscrolldown(term.top, 1); | |
2330 } else { | |
2331 tmoveto(term.c.x, term.c.y-1); | |
2332 } | |
2333 break; | |
2334 case 'Z': /* DECID -- Identify Terminal */ | |
2335 ttywrite(vtiden, strlen(vtiden), 0); | |
2336 break; | |
2337 case 'c': /* RIS -- Reset to initial state */ | |
2338 treset(); | |
2339 resettitle(); | |
2340 xloadcols(); | |
2341 xsetmode(0, MODE_HIDE); | |
2342 break; | |
2343 case '=': /* DECPAM -- Application keypad */ | |
2344 xsetmode(1, MODE_APPKEYPAD); | |
2345 break; | |
2346 case '>': /* DECPNM -- Normal keypad */ | |
2347 xsetmode(0, MODE_APPKEYPAD); | |
2348 break; | |
2349 case '7': /* DECSC -- Save Cursor */ | |
2350 tcursor(CURSOR_SAVE); | |
2351 break; | |
2352 case '8': /* DECRC -- Restore Cursor */ | |
2353 tcursor(CURSOR_LOAD); | |
2354 break; | |
2355 case '\\': /* ST -- String Terminator */ | |
2356 if (term.esc & ESC_STR_END) | |
2357 strhandle(); | |
2358 break; | |
2359 default: | |
2360 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c… | |
2361 (uchar) ascii, isprint(ascii)? ascii:'.'); | |
2362 break; | |
2363 } | |
2364 return 1; | |
2365 } | |
2366 | |
2367 void | |
2368 tputc(Rune u) | |
2369 { | |
2370 char c[UTF_SIZ]; | |
2371 int control; | |
2372 int width, len; | |
2373 Glyph *gp; | |
2374 | |
2375 control = ISCONTROL(u); | |
2376 if (u < 127 || !IS_SET(MODE_UTF8)) { | |
2377 c[0] = u; | |
2378 width = len = 1; | |
2379 } else { | |
2380 len = utf8encode(u, c); | |
2381 if (!control && (width = wcwidth(u)) == -1) | |
2382 width = 1; | |
2383 } | |
2384 | |
2385 if (IS_SET(MODE_PRINT)) | |
2386 tprinter(c, len); | |
2387 | |
2388 /* | |
2389 * STR sequence must be checked before anything else | |
2390 * because it uses all following characters until it | |
2391 * receives a ESC, a SUB, a ST or any other C1 control | |
2392 * character. | |
2393 */ | |
2394 if (term.esc & ESC_STR) { | |
2395 if (u == '\a' || u == 030 || u == 032 || u == 033 || | |
2396 ISCONTROLC1(u)) { | |
2397 term.esc &= ~(ESC_START|ESC_STR); | |
2398 term.esc |= ESC_STR_END; | |
2399 goto check_control_code; | |
2400 } | |
2401 | |
2402 if (strescseq.len+len >= strescseq.siz) { | |
2403 /* | |
2404 * Here is a bug in terminals. If the user never… | |
2405 * some code to stop the str or esc command, the… | |
2406 * will stop responding. But this is better than | |
2407 * silently failing with unknown characters. At … | |
2408 * then users will report back. | |
2409 * | |
2410 * In the case users ever get fixed, here is the… | |
2411 */ | |
2412 /* | |
2413 * term.esc = 0; | |
2414 * strhandle(); | |
2415 */ | |
2416 if (strescseq.siz > (SIZE_MAX - UTF_SIZ) / 2) | |
2417 return; | |
2418 strescseq.siz *= 2; | |
2419 strescseq.buf = xrealloc(strescseq.buf, strescse… | |
2420 } | |
2421 | |
2422 memmove(&strescseq.buf[strescseq.len], c, len); | |
2423 strescseq.len += len; | |
2424 return; | |
2425 } | |
2426 | |
2427 check_control_code: | |
2428 /* | |
2429 * Actions of control codes must be performed as soon they arrive | |
2430 * because they can be embedded inside a control sequence, and | |
2431 * they must not cause conflicts with sequences. | |
2432 */ | |
2433 if (control) { | |
2434 /* in UTF-8 mode ignore handling C1 control characters */ | |
2435 if (IS_SET(MODE_UTF8) && ISCONTROLC1(u)) | |
2436 return; | |
2437 tcontrolcode(u); | |
2438 /* | |
2439 * control codes are not shown ever | |
2440 */ | |
2441 if (!term.esc) | |
2442 term.lastc = 0; | |
2443 return; | |
2444 } else if (term.esc & ESC_START) { | |
2445 if (term.esc & ESC_CSI) { | |
2446 csiescseq.buf[csiescseq.len++] = u; | |
2447 if (BETWEEN(u, 0x40, 0x7E) | |
2448 || csiescseq.len >= \ | |
2449 sizeof(csiescseq.buf)-1) { | |
2450 term.esc = 0; | |
2451 csiparse(); | |
2452 csihandle(); | |
2453 } | |
2454 return; | |
2455 } else if (term.esc & ESC_UTF8) { | |
2456 tdefutf8(u); | |
2457 } else if (term.esc & ESC_ALTCHARSET) { | |
2458 tdeftran(u); | |
2459 } else if (term.esc & ESC_TEST) { | |
2460 tdectest(u); | |
2461 } else { | |
2462 if (!eschandle(u)) | |
2463 return; | |
2464 /* sequence already finished */ | |
2465 } | |
2466 term.esc = 0; | |
2467 /* | |
2468 * All characters which form part of a sequence are not | |
2469 * printed | |
2470 */ | |
2471 return; | |
2472 } | |
2473 if (selected(term.c.x, term.c.y)) | |
2474 selclear(); | |
2475 | |
2476 gp = &term.line[term.c.y][term.c.x]; | |
2477 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) { | |
2478 gp->mode |= ATTR_WRAP; | |
2479 tnewline(1); | |
2480 gp = &term.line[term.c.y][term.c.x]; | |
2481 } | |
2482 | |
2483 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col) { | |
2484 memmove(gp+width, gp, (term.col - term.c.x - width) * si… | |
2485 gp->mode &= ~ATTR_WIDE; | |
2486 } | |
2487 | |
2488 if (term.c.x+width > term.col) { | |
2489 if (IS_SET(MODE_WRAP)) | |
2490 tnewline(1); | |
2491 else | |
2492 tmoveto(term.col - width, term.c.y); | |
2493 gp = &term.line[term.c.y][term.c.x]; | |
2494 } | |
2495 | |
2496 tsetchar(u, &term.c.attr, term.c.x, term.c.y); | |
2497 term.lastc = u; | |
2498 | |
2499 if (width == 2) { | |
2500 gp->mode |= ATTR_WIDE; | |
2501 if (term.c.x+1 < term.col) { | |
2502 if (gp[1].mode == ATTR_WIDE && term.c.x+2 < term… | |
2503 gp[2].u = ' '; | |
2504 gp[2].mode &= ~ATTR_WDUMMY; | |
2505 } | |
2506 gp[1].u = '\0'; | |
2507 gp[1].mode = ATTR_WDUMMY; | |
2508 } | |
2509 } | |
2510 if (term.c.x+width < term.col) { | |
2511 tmoveto(term.c.x+width, term.c.y); | |
2512 } else { | |
2513 term.c.state |= CURSOR_WRAPNEXT; | |
2514 } | |
2515 } | |
2516 | |
2517 int | |
2518 twrite(const char *buf, int buflen, int show_ctrl) | |
2519 { | |
2520 int charsize; | |
2521 Rune u; | |
2522 int n; | |
2523 | |
2524 for (n = 0; n < buflen; n += charsize) { | |
2525 if (IS_SET(MODE_UTF8)) { | |
2526 /* process a complete utf8 char */ | |
2527 charsize = utf8decode(buf + n, &u, buflen - n); | |
2528 if (charsize == 0) | |
2529 break; | |
2530 } else { | |
2531 u = buf[n] & 0xFF; | |
2532 charsize = 1; | |
2533 } | |
2534 if (show_ctrl && ISCONTROL(u)) { | |
2535 if (u & 0x80) { | |
2536 u &= 0x7f; | |
2537 tputc('^'); | |
2538 tputc('['); | |
2539 } else if (u != '\n' && u != '\r' && u != '\t') { | |
2540 u ^= 0x40; | |
2541 tputc('^'); | |
2542 } | |
2543 } | |
2544 tputc(u); | |
2545 } | |
2546 return n; | |
2547 } | |
2548 | |
2549 void | |
2550 tresize(int col, int row) | |
2551 { | |
2552 int i; | |
2553 int minrow = MIN(row, term.row); | |
2554 int mincol = MIN(col, term.col); | |
2555 int *bp; | |
2556 TCursor c; | |
2557 | |
2558 if (col < 1 || row < 1) { | |
2559 fprintf(stderr, | |
2560 "tresize: error resizing to %dx%d\n", col, row); | |
2561 return; | |
2562 } | |
2563 | |
2564 /* | |
2565 * slide screen to keep cursor where we expect it - | |
2566 * tscrollup would work here, but we can optimize to | |
2567 * memmove because we're freeing the earlier lines | |
2568 */ | |
2569 for (i = 0; i <= term.c.y - row; i++) { | |
2570 free(term.line[i]); | |
2571 free(term.alt[i]); | |
2572 } | |
2573 /* ensure that both src and dst are not NULL */ | |
2574 if (i > 0) { | |
2575 memmove(term.line, term.line + i, row * sizeof(Line)); | |
2576 memmove(term.alt, term.alt + i, row * sizeof(Line)); | |
2577 } | |
2578 for (i += row; i < term.row; i++) { | |
2579 free(term.line[i]); | |
2580 free(term.alt[i]); | |
2581 } | |
2582 | |
2583 /* resize to new height */ | |
2584 term.line = xrealloc(term.line, row * sizeof(Line)); | |
2585 term.alt = xrealloc(term.alt, row * sizeof(Line)); | |
2586 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty)); | |
2587 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs)); | |
2588 | |
2589 /* resize each row to new width, zero-pad if needed */ | |
2590 for (i = 0; i < minrow; i++) { | |
2591 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph… | |
2592 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph… | |
2593 } | |
2594 | |
2595 /* allocate any new rows */ | |
2596 for (/* i = minrow */; i < row; i++) { | |
2597 term.line[i] = xmalloc(col * sizeof(Glyph)); | |
2598 term.alt[i] = xmalloc(col * sizeof(Glyph)); | |
2599 } | |
2600 if (col > term.col) { | |
2601 bp = term.tabs + term.col; | |
2602 | |
2603 memset(bp, 0, sizeof(*term.tabs) * (col - term.col)); | |
2604 while (--bp > term.tabs && !*bp) | |
2605 /* nothing */ ; | |
2606 for (bp += tabspaces; bp < term.tabs + col; bp += tabspa… | |
2607 *bp = 1; | |
2608 } | |
2609 /* update terminal size */ | |
2610 term.col = col; | |
2611 term.row = row; | |
2612 /* reset scrolling region */ | |
2613 tsetscroll(0, row-1); | |
2614 /* make use of the LIMIT in tmoveto */ | |
2615 tmoveto(term.c.x, term.c.y); | |
2616 /* Clearing both screens (it makes dirty all lines) */ | |
2617 c = term.c; | |
2618 for (i = 0; i < 2; i++) { | |
2619 if (mincol < col && 0 < minrow) { | |
2620 tclearregion(mincol, 0, col - 1, minrow - 1); | |
2621 } | |
2622 if (0 < col && minrow < row) { | |
2623 tclearregion(0, minrow, col - 1, row - 1); | |
2624 } | |
2625 tswapscreen(); | |
2626 tcursor(CURSOR_LOAD); | |
2627 } | |
2628 term.c = c; | |
2629 } | |
2630 | |
2631 void | |
2632 resettitle(void) | |
2633 { | |
2634 xsettitle(NULL); | |
2635 } | |
2636 | |
2637 void | |
2638 drawregion(int x1, int y1, int x2, int y2) | |
2639 { | |
2640 int y; | |
2641 | |
2642 for (y = y1; y < y2; y++) { | |
2643 if (!term.dirty[y]) | |
2644 continue; | |
2645 | |
2646 term.dirty[y] = 0; | |
2647 xdrawline(term.line[y], x1, y, x2); | |
2648 } | |
2649 } | |
2650 | |
2651 void | |
2652 draw(void) | |
2653 { | |
2654 int cx = term.c.x, ocx = term.ocx, ocy = term.ocy; | |
2655 | |
2656 if (!xstartdraw()) | |
2657 return; | |
2658 | |
2659 /* adjust cursor position */ | |
2660 LIMIT(term.ocx, 0, term.col-1); | |
2661 LIMIT(term.ocy, 0, term.row-1); | |
2662 if (term.line[term.ocy][term.ocx].mode & ATTR_WDUMMY) | |
2663 term.ocx--; | |
2664 if (term.line[term.c.y][cx].mode & ATTR_WDUMMY) | |
2665 cx--; | |
2666 | |
2667 drawregion(0, 0, term.col, term.row); | |
2668 xdrawcursor(cx, term.c.y, term.line[term.c.y][cx], | |
2669 term.ocx, term.ocy, term.line[term.ocy][term.ocx… | |
2670 term.ocx = cx; | |
2671 term.ocy = term.c.y; | |
2672 xfinishdraw(); | |
2673 if (ocx != term.ocx || ocy != term.ocy) | |
2674 xximspot(term.ocx, term.ocy); | |
2675 } | |
2676 | |
2677 void | |
2678 redraw(void) | |
2679 { | |
2680 tfulldirt(); | |
2681 draw(); | |
2682 } |