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[st.git] / st.c
1 /* See LICENSE for licence details. */
2 #include <ctype.h>
3 #include <errno.h>
4 #include <fcntl.h>
5 #include <limits.h>
6 #include <locale.h>
7 #include <pwd.h>
8 #include <stdarg.h>
9 #include <stdbool.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include <signal.h>
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
16 #include <sys/stat.h>
17 #include <sys/time.h>
18 #include <sys/types.h>
19 #include <sys/wait.h>
20 #include <time.h>
21 #include <unistd.h>
22 #include <X11/Xatom.h>
23 #include <X11/Xlib.h>
24 #include <X11/Xutil.h>
25 #include <X11/cursorfont.h>
26 #include <X11/keysym.h>
27 #include <X11/Xft/Xft.h>
28 #include <fontconfig/fontconfig.h>
29
30 #include "arg.h"
31
32 char *argv0;
33
34 #define Glyph Glyph_
35 #define Font Font_
36 #define Draw XftDraw *
37 #define Colour XftColor
38 #define Colourmap Colormap
39 #define Rectangle XRectangle
40
41 #if defined(__linux)
42 #include <pty.h>
43 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
44 #include <util.h>
45 #elif defined(__FreeBSD__) || defined(__DragonFly__)
46 #include <libutil.h>
47 #endif
48
49
50 /* XEMBED messages */
51 #define XEMBED_FOCUS_IN 4
52 #define XEMBED_FOCUS_OUT 5
53
54 /* Arbitrary sizes */
55 #define UTF_SIZ 4
56 #define ESC_BUF_SIZ (128*UTF_SIZ)
57 #define ESC_ARG_SIZ 16
58 #define STR_BUF_SIZ ESC_BUF_SIZ
59 #define STR_ARG_SIZ ESC_ARG_SIZ
60 #define DRAW_BUF_SIZ 20*1024
61 #define XK_ANY_MOD UINT_MAX
62 #define XK_NO_MOD 0
63 #define XK_SWITCH_MOD (1<<13)
64
65 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
66
67 /* macros */
68 #define SERRNO strerror(errno)
69 #define MIN(a, b) ((a) < (b) ? (a) : (b))
70 #define MAX(a, b) ((a) < (b) ? (b) : (a))
71 #define LEN(a) (sizeof(a) / sizeof(a[0]))
72 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
73 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
74 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
75 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
76 #define IS_SET(flag) ((term.mode & (flag)) != 0)
77 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
78
79 #define VT102ID "\033[?6c"
80
81 enum glyph_attribute {
82 ATTR_NULL = 0,
83 ATTR_REVERSE = 1,
84 ATTR_UNDERLINE = 2,
85 ATTR_BOLD = 4,
86 ATTR_GFX = 8,
87 ATTR_ITALIC = 16,
88 ATTR_BLINK = 32,
89 ATTR_WRAP = 64,
90 };
91
92 enum cursor_movement {
93 CURSOR_SAVE,
94 CURSOR_LOAD
95 };
96
97 enum cursor_state {
98 CURSOR_DEFAULT = 0,
99 CURSOR_WRAPNEXT = 1,
100 CURSOR_ORIGIN = 2
101 };
102
103 enum term_mode {
104 MODE_WRAP = 1,
105 MODE_INSERT = 2,
106 MODE_APPKEYPAD = 4,
107 MODE_ALTSCREEN = 8,
108 MODE_CRLF = 16,
109 MODE_MOUSEBTN = 32,
110 MODE_MOUSEMOTION = 64,
111 MODE_MOUSE = 32|64,
112 MODE_REVERSE = 128,
113 MODE_KBDLOCK = 256,
114 MODE_HIDE = 512,
115 MODE_ECHO = 1024,
116 MODE_APPCURSOR = 2048,
117 MODE_MOUSESGR = 4096,
118 MODE_8BIT = 8192,
119 MODE_BLINK = 16384,
120 MODE_FBLINK = 32768,
121 };
122
123 enum escape_state {
124 ESC_START = 1,
125 ESC_CSI = 2,
126 ESC_STR = 4, /* DSC, OSC, PM, APC */
127 ESC_ALTCHARSET = 8,
128 ESC_STR_END = 16, /* a final string was encountered */
129 ESC_TEST = 32, /* Enter in test mode */
130 };
131
132 enum window_state {
133 WIN_VISIBLE = 1,
134 WIN_REDRAW = 2,
135 WIN_FOCUSED = 4
136 };
137
138 enum selection_type {
139 SEL_REGULAR = 1,
140 SEL_RECTANGULAR = 2
141 };
142
143 enum selection_snap {
144 SNAP_WORD = 1,
145 SNAP_LINE = 2
146 };
147
148 /* bit macro */
149 #undef B0
150 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
151
152 typedef unsigned char uchar;
153 typedef unsigned int uint;
154 typedef unsigned long ulong;
155 typedef unsigned short ushort;
156
157 typedef struct {
158 char c[UTF_SIZ]; /* character code */
159 uchar mode; /* attribute flags */
160 ushort fg; /* foreground */
161 ushort bg; /* background */
162 } Glyph;
163
164 typedef Glyph *Line;
165
166 typedef struct {
167 Glyph attr; /* current char attributes */
168 int x;
169 int y;
170 char state;
171 } TCursor;
172
173 /* CSI Escape sequence structs */
174 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
175 typedef struct {
176 char buf[ESC_BUF_SIZ]; /* raw string */
177 int len; /* raw string length */
178 char priv;
179 int arg[ESC_ARG_SIZ];
180 int narg; /* nb of args */
181 char mode;
182 } CSIEscape;
183
184 /* STR Escape sequence structs */
185 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
186 typedef struct {
187 char type; /* ESC type ... */
188 char buf[STR_BUF_SIZ]; /* raw string */
189 int len; /* raw string length */
190 char *args[STR_ARG_SIZ];
191 int narg; /* nb of args */
192 } STREscape;
193
194 /* Internal representation of the screen */
195 typedef struct {
196 int row; /* nb row */
197 int col; /* nb col */
198 Line *line; /* screen */
199 Line *alt; /* alternate screen */
200 bool *dirty; /* dirtyness of lines */
201 TCursor c; /* cursor */
202 int top; /* top scroll limit */
203 int bot; /* bottom scroll limit */
204 int mode; /* terminal mode flags */
205 int esc; /* escape state flags */
206 bool numlock; /* lock numbers in keyboard */
207 bool *tabs;
208 } Term;
209
210 /* Purely graphic info */
211 typedef struct {
212 Display *dpy;
213 Colourmap cmap;
214 Window win;
215 Drawable buf;
216 Atom xembed, wmdeletewin;
217 XIM xim;
218 XIC xic;
219 Draw draw;
220 Visual *vis;
221 int scr;
222 bool isfixed; /* is fixed geometry? */
223 int fx, fy, fw, fh; /* fixed geometry */
224 int tw, th; /* tty width and height */
225 int w, h; /* window width and height */
226 int ch; /* char height */
227 int cw; /* char width */
228 char state; /* focus, redraw, visible */
229 } XWindow;
230
231 typedef struct {
232 int b;
233 uint mask;
234 char s[ESC_BUF_SIZ];
235 } Mousekey;
236
237 typedef struct {
238 KeySym k;
239 uint mask;
240 char s[ESC_BUF_SIZ];
241 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
242 signed char appkey; /* application keypad */
243 signed char appcursor; /* application cursor */
244 signed char crlf; /* crlf mode */
245 } Key;
246
247 /* TODO: use better name for vars... */
248 typedef struct {
249 int mode;
250 int type;
251 int snap;
252 int bx, by;
253 int ex, ey;
254 struct {
255 int x, y;
256 } b, e;
257 char *clip;
258 Atom xtarget;
259 bool alt;
260 struct timeval tclick1;
261 struct timeval tclick2;
262 } Selection;
263
264 typedef union {
265 int i;
266 unsigned int ui;
267 float f;
268 const void *v;
269 } Arg;
270
271 typedef struct {
272 unsigned int mod;
273 KeySym keysym;
274 void (*func)(const Arg *);
275 const Arg arg;
276 } Shortcut;
277
278 /* function definitions used in config.h */
279 static void clippaste(const Arg *);
280 static void numlock(const Arg *);
281 static void selpaste(const Arg *);
282 static void xzoom(const Arg *);
283
284 /* Config.h for applying patches and the configuration. */
285 #include "config.h"
286
287 /* Font structure */
288 typedef struct {
289 int height;
290 int width;
291 int ascent;
292 int descent;
293 short lbearing;
294 short rbearing;
295 XftFont *match;
296 FcFontSet *set;
297 FcPattern *pattern;
298 } Font;
299
300 /* Drawing Context */
301 typedef struct {
302 Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
303 Font font, bfont, ifont, ibfont;
304 GC gc;
305 } DC;
306
307 static void die(const char *, ...);
308 static void draw(void);
309 static void redraw(int);
310 static void drawregion(int, int, int, int);
311 static void execsh(void);
312 static void sigchld(int);
313 static void run(void);
314
315 static void csidump(void);
316 static void csihandle(void);
317 static void csiparse(void);
318 static void csireset(void);
319 static void strdump(void);
320 static void strhandle(void);
321 static void strparse(void);
322 static void strreset(void);
323
324 static int tattrset(int);
325 static void tclearregion(int, int, int, int);
326 static void tcursor(int);
327 static void tdeletechar(int);
328 static void tdeleteline(int);
329 static void tinsertblank(int);
330 static void tinsertblankline(int);
331 static void tmoveto(int, int);
332 static void tmoveato(int x, int y);
333 static void tnew(int, int);
334 static void tnewline(int);
335 static void tputtab(bool);
336 static void tputc(char *, int);
337 static void treset(void);
338 static int tresize(int, int);
339 static void tscrollup(int, int);
340 static void tscrolldown(int, int);
341 static void tsetattr(int*, int);
342 static void tsetchar(char *, Glyph *, int, int);
343 static void tsetscroll(int, int);
344 static void tswapscreen(void);
345 static void tsetdirt(int, int);
346 static void tsetdirtattr(int);
347 static void tsetmode(bool, bool, int *, int);
348 static void tfulldirt(void);
349 static void techo(char *, int);
350
351 static inline bool match(uint, uint);
352 static void ttynew(void);
353 static void ttyread(void);
354 static void ttyresize(void);
355 static void ttywrite(const char *, size_t);
356
357 static void xdraws(char *, Glyph, int, int, int, int);
358 static void xhints(void);
359 static void xclear(int, int, int, int);
360 static void xdrawcursor(void);
361 static void xinit(void);
362 static void xloadcols(void);
363 static int xsetcolorname(int, const char *);
364 static int xloadfont(Font *, FcPattern *);
365 static void xloadfonts(char *, int);
366 static void xsettitle(char *);
367 static void xresettitle(void);
368 static void xseturgency(int);
369 static void xsetsel(char*);
370 static void xtermclear(int, int, int, int);
371 static void xunloadfonts(void);
372 static void xresize(int, int);
373
374 static void expose(XEvent *);
375 static void visibility(XEvent *);
376 static void unmap(XEvent *);
377 static char *kmap(KeySym, uint);
378 static void kpress(XEvent *);
379 static void cmessage(XEvent *);
380 static void cresize(int, int);
381 static void resize(XEvent *);
382 static void focus(XEvent *);
383 static void brelease(XEvent *);
384 static void bpress(XEvent *);
385 static void bmotion(XEvent *);
386 static void selnotify(XEvent *);
387 static void selclear(XEvent *);
388 static void selrequest(XEvent *);
389
390 static void selinit(void);
391 static inline bool selected(int, int);
392 static void selcopy(void);
393 static void selscroll(int, int);
394 static void selsnap(int, int *, int *, int);
395
396 static int utf8decode(char *, long *);
397 static int utf8encode(long *, char *);
398 static int utf8size(char *);
399 static int isfullutf8(char *, int);
400
401 static ssize_t xwrite(int, char *, size_t);
402 static void *xmalloc(size_t);
403 static void *xrealloc(void *, size_t);
404 static void *xcalloc(size_t, size_t);
405
406 static void (*handler[LASTEvent])(XEvent *) = {
407 [KeyPress] = kpress,
408 [ClientMessage] = cmessage,
409 [ConfigureNotify] = resize,
410 [VisibilityNotify] = visibility,
411 [UnmapNotify] = unmap,
412 [Expose] = expose,
413 [FocusIn] = focus,
414 [FocusOut] = focus,
415 [MotionNotify] = bmotion,
416 [ButtonPress] = bpress,
417 [ButtonRelease] = brelease,
418 [SelectionClear] = selclear,
419 [SelectionNotify] = selnotify,
420 [SelectionRequest] = selrequest,
421 };
422
423 /* Globals */
424 static DC dc;
425 static XWindow xw;
426 static Term term;
427 static CSIEscape csiescseq;
428 static STREscape strescseq;
429 static int cmdfd;
430 static pid_t pid;
431 static Selection sel;
432 static int iofd = -1;
433 static char **opt_cmd = NULL;
434 static char *opt_io = NULL;
435 static char *opt_title = NULL;
436 static char *opt_embed = NULL;
437 static char *opt_class = NULL;
438 static char *opt_font = NULL;
439
440 static char *usedfont = NULL;
441 static int usedfontsize = 0;
442
443 /* Font Ring Cache */
444 enum {
445 FRC_NORMAL,
446 FRC_ITALIC,
447 FRC_BOLD,
448 FRC_ITALICBOLD
449 };
450
451 typedef struct {
452 XftFont *font;
453 long c;
454 int flags;
455 } Fontcache;
456
457 /*
458 * Fontcache is a ring buffer, with frccur as current position and frclen as
459 * the current length of used elements.
460 */
461
462 static Fontcache frc[1024];
463 static int frccur = -1, frclen = 0;
464
465 ssize_t
466 xwrite(int fd, char *s, size_t len) {
467 size_t aux = len;
468
469 while(len > 0) {
470 ssize_t r = write(fd, s, len);
471 if(r < 0)
472 return r;
473 len -= r;
474 s += r;
475 }
476 return aux;
477 }
478
479 void *
480 xmalloc(size_t len) {
481 void *p = malloc(len);
482
483 if(!p)
484 die("Out of memory\n");
485
486 return p;
487 }
488
489 void *
490 xrealloc(void *p, size_t len) {
491 if((p = realloc(p, len)) == NULL)
492 die("Out of memory\n");
493
494 return p;
495 }
496
497 void *
498 xcalloc(size_t nmemb, size_t size) {
499 void *p = calloc(nmemb, size);
500
501 if(!p)
502 die("Out of memory\n");
503
504 return p;
505 }
506
507 int
508 utf8decode(char *s, long *u) {
509 uchar c;
510 int i, n, rtn;
511
512 rtn = 1;
513 c = *s;
514 if(~c & B7) { /* 0xxxxxxx */
515 *u = c;
516 return rtn;
517 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
518 *u = c&(B4|B3|B2|B1|B0);
519 n = 1;
520 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
521 *u = c&(B3|B2|B1|B0);
522 n = 2;
523 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
524 *u = c & (B2|B1|B0);
525 n = 3;
526 } else {
527 goto invalid;
528 }
529
530 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
531 c = *s;
532 if((c & (B7|B6)) != B7) /* 10xxxxxx */
533 goto invalid;
534 *u <<= 6;
535 *u |= c & (B5|B4|B3|B2|B1|B0);
536 }
537
538 if((n == 1 && *u < 0x80) ||
539 (n == 2 && *u < 0x800) ||
540 (n == 3 && *u < 0x10000) ||
541 (*u >= 0xD800 && *u <= 0xDFFF)) {
542 goto invalid;
543 }
544
545 return rtn;
546 invalid:
547 *u = 0xFFFD;
548
549 return rtn;
550 }
551
552 int
553 utf8encode(long *u, char *s) {
554 uchar *sp;
555 ulong uc;
556 int i, n;
557
558 sp = (uchar *)s;
559 uc = *u;
560 if(uc < 0x80) {
561 *sp = uc; /* 0xxxxxxx */
562 return 1;
563 } else if(*u < 0x800) {
564 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
565 n = 1;
566 } else if(uc < 0x10000) {
567 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
568 n = 2;
569 } else if(uc <= 0x10FFFF) {
570 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
571 n = 3;
572 } else {
573 goto invalid;
574 }
575
576 for(i=n,++sp; i>0; --i,++sp)
577 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
578
579 return n+1;
580 invalid:
581 /* U+FFFD */
582 *s++ = '\xEF';
583 *s++ = '\xBF';
584 *s = '\xBD';
585
586 return 3;
587 }
588
589 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
590 UTF-8 otherwise return 0 */
591 int
592 isfullutf8(char *s, int b) {
593 uchar *c1, *c2, *c3;
594
595 c1 = (uchar *)s;
596 c2 = (uchar *)++s;
597 c3 = (uchar *)++s;
598 if(b < 1) {
599 return 0;
600 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
601 return 0;
602 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
603 ((b == 1) ||
604 ((b == 2) && (*c2&(B7|B6)) == B7))) {
605 return 0;
606 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
607 ((b == 1) ||
608 ((b == 2) && (*c2&(B7|B6)) == B7) ||
609 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
610 return 0;
611 } else {
612 return 1;
613 }
614 }
615
616 int
617 utf8size(char *s) {
618 uchar c = *s;
619
620 if(~c&B7) {
621 return 1;
622 } else if((c&(B7|B6|B5)) == (B7|B6)) {
623 return 2;
624 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
625 return 3;
626 } else {
627 return 4;
628 }
629 }
630
631 void
632 selinit(void) {
633 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
634 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
635 sel.mode = 0;
636 sel.bx = -1;
637 sel.clip = NULL;
638 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
639 if(sel.xtarget == None)
640 sel.xtarget = XA_STRING;
641 }
642
643 static int
644 x2col(int x) {
645 x -= borderpx;
646 x /= xw.cw;
647
648 return LIMIT(x, 0, term.col-1);
649 }
650
651 static int
652 y2row(int y) {
653 y -= borderpx;
654 y /= xw.ch;
655
656 return LIMIT(y, 0, term.row-1);
657 }
658
659 static inline bool
660 selected(int x, int y) {
661 int bx, ex;
662
663 if(sel.ey == y && sel.by == y) {
664 bx = MIN(sel.bx, sel.ex);
665 ex = MAX(sel.bx, sel.ex);
666
667 return BETWEEN(x, bx, ex);
668 }
669
670 if(sel.type == SEL_RECTANGULAR) {
671 return ((sel.b.y <= y && y <= sel.e.y)
672 && (sel.b.x <= x && x <= sel.e.x));
673 }
674 return ((sel.b.y < y && y < sel.e.y)
675 || (y == sel.e.y && x <= sel.e.x))
676 || (y == sel.b.y && x >= sel.b.x
677 && (x <= sel.e.x || sel.b.y != sel.e.y));
678 }
679
680 void
681 selsnap(int mode, int *x, int *y, int direction) {
682 int i;
683
684 switch(mode) {
685 case SNAP_WORD:
686 /*
687 * Snap around if the word wraps around at the end or
688 * beginning of a line.
689 */
690 for(;;) {
691 if(direction < 0 && *x <= 0) {
692 if(*y > 0 && term.line[*y - 1][term.col-1].mode
693 & ATTR_WRAP) {
694 *y -= 1;
695 *x = term.col-1;
696 } else {
697 break;
698 }
699 }
700 if(direction > 0 && *x >= term.col-1) {
701 if(*y < term.row-1 && term.line[*y][*x].mode
702 & ATTR_WRAP) {
703 *y += 1;
704 *x = 0;
705 } else {
706 break;
707 }
708 }
709
710 if(term.line[*y][*x + direction].c[0] == ' ')
711 break;
712
713 *x += direction;
714 }
715 break;
716 case SNAP_LINE:
717 /*
718 * Snap around if the the previous line or the current one
719 * has set ATTR_WRAP at its end. Then the whole next or
720 * previous line will be selected.
721 */
722 *x = (direction < 0) ? 0 : term.col - 1;
723 if(direction < 0 && *y > 0) {
724 for(; *y > 0; *y += direction) {
725 if(!(term.line[*y-1][term.col-1].mode
726 & ATTR_WRAP)) {
727 break;
728 }
729 }
730 } else if(direction > 0 && *y < term.row-1) {
731 for(; *y < term.row; *y += direction) {
732 if(!(term.line[*y][term.col-1].mode
733 & ATTR_WRAP)) {
734 break;
735 }
736 }
737 }
738 break;
739 default:
740 /*
741 * Select the whole line when the end of line is reached.
742 */
743 if(direction > 0) {
744 i = term.col;
745 while(--i > 0 && term.line[*y][i].c[0] == ' ')
746 /* nothing */;
747 if(i > 0 && i < *x)
748 *x = term.col - 1;
749 }
750 break;
751 }
752 }
753
754 void
755 getbuttoninfo(XEvent *e) {
756 int type;
757 uint state = e->xbutton.state &~Button1Mask;
758
759 sel.alt = IS_SET(MODE_ALTSCREEN);
760
761 sel.ex = x2col(e->xbutton.x);
762 sel.ey = y2row(e->xbutton.y);
763
764 if (sel.by < sel.ey
765 || (sel.by == sel.ey && sel.bx < sel.ex)) {
766 selsnap(sel.snap, &sel.bx, &sel.by, -1);
767 selsnap(sel.snap, &sel.ex, &sel.ey, +1);
768 } else {
769 selsnap(sel.snap, &sel.ex, &sel.ey, -1);
770 selsnap(sel.snap, &sel.bx, &sel.by, +1);
771 }
772
773 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
774 sel.b.y = MIN(sel.by, sel.ey);
775 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
776 sel.e.y = MAX(sel.by, sel.ey);
777
778 sel.type = SEL_REGULAR;
779 for(type = 1; type < LEN(selmasks); ++type) {
780 if(match(selmasks[type], state)) {
781 sel.type = type;
782 break;
783 }
784 }
785 }
786
787 void
788 mousereport(XEvent *e) {
789 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
790 button = e->xbutton.button, state = e->xbutton.state,
791 len;
792 char buf[40];
793 static int ob, ox, oy;
794
795 /* from urxvt */
796 if(e->xbutton.type == MotionNotify) {
797 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
798 return;
799 button = ob + 32;
800 ox = x, oy = y;
801 } else if(!IS_SET(MODE_MOUSESGR)
802 && (e->xbutton.type == ButtonRelease
803 || button == AnyButton)) {
804 button = 3;
805 } else {
806 button -= Button1;
807 if(button >= 3)
808 button += 64 - 3;
809 if(e->xbutton.type == ButtonPress) {
810 ob = button;
811 ox = x, oy = y;
812 }
813 }
814
815 button += (state & ShiftMask ? 4 : 0)
816 + (state & Mod4Mask ? 8 : 0)
817 + (state & ControlMask ? 16 : 0);
818
819 len = 0;
820 if(IS_SET(MODE_MOUSESGR)) {
821 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
822 button, x+1, y+1,
823 e->xbutton.type == ButtonRelease ? 'm' : 'M');
824 } else if(x < 223 && y < 223) {
825 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
826 32+button, 32+x+1, 32+y+1);
827 } else {
828 return;
829 }
830
831 ttywrite(buf, len);
832 }
833
834 void
835 bpress(XEvent *e) {
836 struct timeval now;
837 Mousekey *mk;
838
839 if(IS_SET(MODE_MOUSE)) {
840 mousereport(e);
841 return;
842 }
843
844 for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
845 if(e->xbutton.button == mk->b
846 && match(mk->mask, e->xbutton.state)) {
847 ttywrite(mk->s, strlen(mk->s));
848 if(IS_SET(MODE_ECHO))
849 techo(mk->s, strlen(mk->s));
850 return;
851 }
852 }
853
854 if(e->xbutton.button == Button1) {
855 gettimeofday(&now, NULL);
856
857 /* Clear previous selection, logically and visually. */
858 if(sel.bx != -1) {
859 sel.bx = -1;
860 tsetdirt(sel.b.y, sel.e.y);
861 draw();
862 }
863 sel.mode = 1;
864 sel.type = SEL_REGULAR;
865 sel.ex = sel.bx = x2col(e->xbutton.x);
866 sel.ey = sel.by = y2row(e->xbutton.y);
867
868 /*
869 * If the user clicks below predefined timeouts specific
870 * snapping behaviour is exposed.
871 */
872 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
873 sel.snap = SNAP_LINE;
874 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
875 sel.snap = SNAP_WORD;
876 } else {
877 sel.snap = 0;
878 }
879 selsnap(sel.snap, &sel.bx, &sel.by, -1);
880 selsnap(sel.snap, &sel.ex, &sel.ey, +1);
881 sel.b.x = sel.bx;
882 sel.b.y = sel.by;
883 sel.e.x = sel.ex;
884 sel.e.y = sel.ey;
885
886 /*
887 * Draw selection, unless it's regular and we don't want to
888 * make clicks visible
889 */
890 if(sel.snap != 0) {
891 sel.mode++;
892 tsetdirt(sel.b.y, sel.e.y);
893 draw();
894 }
895 sel.tclick2 = sel.tclick1;
896 sel.tclick1 = now;
897 }
898 }
899
900 void
901 selcopy(void) {
902 char *str, *ptr;
903 int x, y, bufsize, size;
904 Glyph *gp, *last;
905
906 if(sel.bx == -1) {
907 str = NULL;
908 } else {
909 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
910 ptr = str = xmalloc(bufsize);
911
912 /* append every set & selected glyph to the selection */
913 for(y = sel.b.y; y < sel.e.y + 1; y++) {
914 gp = &term.line[y][0];
915 last = gp + term.col;
916
917 while(--last >= gp && !(selected(last - gp, y) && \
918 strcmp(last->c, " ") != 0))
919 /* nothing */;
920
921 for(x = 0; gp <= last; x++, ++gp) {
922 if(!selected(x, y))
923 continue;
924
925 size = utf8size(gp->c);
926 memcpy(ptr, gp->c, size);
927 ptr += size;
928 }
929
930 /*
931 * Copy and pasting of line endings is inconsistent
932 * in the inconsistent terminal and GUI world.
933 * The best solution seems like to produce '\n' when
934 * something is copied from st and convert '\n' to
935 * '\r', when something to be pasted is received by
936 * st.
937 * FIXME: Fix the computer world.
938 */
939 if(y < sel.e.y && !((gp-1)->mode & ATTR_WRAP))
940 *ptr++ = '\n';
941 }
942 *ptr = 0;
943 }
944 xsetsel(str);
945 }
946
947 void
948 selnotify(XEvent *e) {
949 ulong nitems, ofs, rem;
950 int format;
951 uchar *data, *last, *repl;
952 Atom type;
953
954 ofs = 0;
955 do {
956 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
957 False, AnyPropertyType, &type, &format,
958 &nitems, &rem, &data)) {
959 fprintf(stderr, "Clipboard allocation failed\n");
960 return;
961 }
962
963 /*
964 * As seen in selcopy:
965 * Line endings are inconsistent in the terminal and GUI world
966 * copy and pasting. When receiving some selection data,
967 * replace all '\n' with '\r'.
968 * FIXME: Fix the computer world.
969 */
970 repl = data;
971 last = data + nitems * format / 8;
972 while((repl = memchr(repl, '\n', last - repl))) {
973 *repl++ = '\r';
974 }
975
976 ttywrite((const char *)data, nitems * format / 8);
977 XFree(data);
978 /* number of 32-bit chunks returned */
979 ofs += nitems * format / 32;
980 } while(rem > 0);
981 }
982
983 void
984 selpaste(const Arg *dummy) {
985 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
986 xw.win, CurrentTime);
987 }
988
989 void
990 clippaste(const Arg *dummy) {
991 Atom clipboard;
992
993 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
994 XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
995 xw.win, CurrentTime);
996 }
997
998 void
999 selclear(XEvent *e) {
1000 if(sel.bx == -1)
1001 return;
1002 sel.bx = -1;
1003 tsetdirt(sel.b.y, sel.e.y);
1004 }
1005
1006 void
1007 selrequest(XEvent *e) {
1008 XSelectionRequestEvent *xsre;
1009 XSelectionEvent xev;
1010 Atom xa_targets, string;
1011
1012 xsre = (XSelectionRequestEvent *) e;
1013 xev.type = SelectionNotify;
1014 xev.requestor = xsre->requestor;
1015 xev.selection = xsre->selection;
1016 xev.target = xsre->target;
1017 xev.time = xsre->time;
1018 /* reject */
1019 xev.property = None;
1020
1021 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1022 if(xsre->target == xa_targets) {
1023 /* respond with the supported type */
1024 string = sel.xtarget;
1025 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1026 XA_ATOM, 32, PropModeReplace,
1027 (uchar *) &string, 1);
1028 xev.property = xsre->property;
1029 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
1030 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1031 xsre->target, 8, PropModeReplace,
1032 (uchar *) sel.clip, strlen(sel.clip));
1033 xev.property = xsre->property;
1034 }
1035
1036 /* all done, send a notification to the listener */
1037 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
1038 fprintf(stderr, "Error sending SelectionNotify event\n");
1039 }
1040
1041 void
1042 xsetsel(char *str) {
1043 /* register the selection for both the clipboard and the primary */
1044 Atom clipboard;
1045
1046 free(sel.clip);
1047 sel.clip = str;
1048
1049 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
1050
1051 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1052 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1053 }
1054
1055 void
1056 brelease(XEvent *e) {
1057 if(IS_SET(MODE_MOUSE)) {
1058 mousereport(e);
1059 return;
1060 }
1061
1062 if(e->xbutton.button == Button2) {
1063 selpaste(NULL);
1064 } else if(e->xbutton.button == Button1) {
1065 if(sel.mode < 2) {
1066 sel.bx = -1;
1067 } else {
1068 getbuttoninfo(e);
1069 selcopy();
1070 }
1071 sel.mode = 0;
1072 term.dirty[sel.ey] = 1;
1073 }
1074 }
1075
1076 void
1077 bmotion(XEvent *e) {
1078 int oldey, oldex, oldsby, oldsey;
1079
1080 if(IS_SET(MODE_MOUSE)) {
1081 mousereport(e);
1082 return;
1083 }
1084
1085 if(!sel.mode)
1086 return;
1087
1088 sel.mode++;
1089 oldey = sel.ey;
1090 oldex = sel.ex;
1091 oldsby = sel.b.y;
1092 oldsey = sel.e.y;
1093 getbuttoninfo(e);
1094
1095 if(oldey != sel.ey || oldex != sel.ex) {
1096 tsetdirt(MIN(sel.b.y, oldsby), MAX(sel.e.y, oldsey));
1097 }
1098 }
1099
1100 void
1101 die(const char *errstr, ...) {
1102 va_list ap;
1103
1104 va_start(ap, errstr);
1105 vfprintf(stderr, errstr, ap);
1106 va_end(ap);
1107 exit(EXIT_FAILURE);
1108 }
1109
1110 void
1111 execsh(void) {
1112 char **args;
1113 char *envshell = getenv("SHELL");
1114 const struct passwd *pass = getpwuid(getuid());
1115 char buf[sizeof(long) * 8 + 1];
1116
1117 unsetenv("COLUMNS");
1118 unsetenv("LINES");
1119 unsetenv("TERMCAP");
1120
1121 if(pass) {
1122 setenv("LOGNAME", pass->pw_name, 1);
1123 setenv("USER", pass->pw_name, 1);
1124 setenv("SHELL", pass->pw_shell, 0);
1125 setenv("HOME", pass->pw_dir, 0);
1126 }
1127
1128 snprintf(buf, sizeof(buf), "%lu", xw.win);
1129 setenv("WINDOWID", buf, 1);
1130
1131 signal(SIGCHLD, SIG_DFL);
1132 signal(SIGHUP, SIG_DFL);
1133 signal(SIGINT, SIG_DFL);
1134 signal(SIGQUIT, SIG_DFL);
1135 signal(SIGTERM, SIG_DFL);
1136 signal(SIGALRM, SIG_DFL);
1137
1138 DEFAULT(envshell, shell);
1139 setenv("TERM", termname, 1);
1140 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
1141 execvp(args[0], args);
1142 exit(EXIT_FAILURE);
1143 }
1144
1145 void
1146 sigchld(int a) {
1147 int stat = 0;
1148
1149 if(waitpid(pid, &stat, 0) < 0)
1150 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
1151
1152 if(WIFEXITED(stat)) {
1153 exit(WEXITSTATUS(stat));
1154 } else {
1155 exit(EXIT_FAILURE);
1156 }
1157 }
1158
1159 void
1160 ttynew(void) {
1161 int m, s;
1162 struct winsize w = {term.row, term.col, 0, 0};
1163
1164 /* seems to work fine on linux, openbsd and freebsd */
1165 if(openpty(&m, &s, NULL, NULL, &w) < 0)
1166 die("openpty failed: %s\n", SERRNO);
1167
1168 switch(pid = fork()) {
1169 case -1:
1170 die("fork failed\n");
1171 break;
1172 case 0:
1173 setsid(); /* create a new process group */
1174 dup2(s, STDIN_FILENO);
1175 dup2(s, STDOUT_FILENO);
1176 dup2(s, STDERR_FILENO);
1177 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1178 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
1179 close(s);
1180 close(m);
1181 execsh();
1182 break;
1183 default:
1184 close(s);
1185 cmdfd = m;
1186 signal(SIGCHLD, sigchld);
1187 if(opt_io) {
1188 iofd = (!strcmp(opt_io, "-")) ?
1189 STDOUT_FILENO :
1190 open(opt_io, O_WRONLY | O_CREAT, 0666);
1191 if(iofd < 0) {
1192 fprintf(stderr, "Error opening %s:%s\n",
1193 opt_io, strerror(errno));
1194 }
1195 }
1196 }
1197 }
1198
1199 void
1200 dump(char c) {
1201 static int col;
1202
1203 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
1204 if(++col % 10 == 0)
1205 fprintf(stderr, "\n");
1206 }
1207
1208 void
1209 ttyread(void) {
1210 static char buf[BUFSIZ];
1211 static int buflen = 0;
1212 char *ptr;
1213 char s[UTF_SIZ];
1214 int charsize; /* size of utf8 char in bytes */
1215 long utf8c;
1216 int ret;
1217
1218 /* append read bytes to unprocessed bytes */
1219 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1220 die("Couldn't read from shell: %s\n", SERRNO);
1221
1222 /* process every complete utf8 char */
1223 buflen += ret;
1224 ptr = buf;
1225 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1226 charsize = utf8decode(ptr, &utf8c);
1227 utf8encode(&utf8c, s);
1228 tputc(s, charsize);
1229 ptr += charsize;
1230 buflen -= charsize;
1231 }
1232
1233 /* keep any uncomplete utf8 char for the next call */
1234 memmove(buf, ptr, buflen);
1235 }
1236
1237 void
1238 ttywrite(const char *s, size_t n) {
1239 if(write(cmdfd, s, n) == -1)
1240 die("write error on tty: %s\n", SERRNO);
1241 }
1242
1243 void
1244 ttyresize(void) {
1245 struct winsize w;
1246
1247 w.ws_row = term.row;
1248 w.ws_col = term.col;
1249 w.ws_xpixel = xw.tw;
1250 w.ws_ypixel = xw.th;
1251 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1252 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1253 }
1254
1255 int
1256 tattrset(int attr) {
1257 int i, j;
1258
1259 for(i = 0; i < term.row-1; i++) {
1260 for(j = 0; j < term.col-1; j++) {
1261 if(term.line[i][j].mode & attr)
1262 return 1;
1263 }
1264 }
1265
1266 return 0;
1267 }
1268
1269 void
1270 tsetdirt(int top, int bot) {
1271 int i;
1272
1273 LIMIT(top, 0, term.row-1);
1274 LIMIT(bot, 0, term.row-1);
1275
1276 for(i = top; i <= bot; i++)
1277 term.dirty[i] = 1;
1278 }
1279
1280 void
1281 tsetdirtattr(int attr) {
1282 int i, j;
1283
1284 for(i = 0; i < term.row-1; i++) {
1285 for(j = 0; j < term.col-1; j++) {
1286 if(term.line[i][j].mode & attr) {
1287 tsetdirt(i, i);
1288 break;
1289 }
1290 }
1291 }
1292 }
1293
1294 void
1295 tfulldirt(void) {
1296 tsetdirt(0, term.row-1);
1297 }
1298
1299 void
1300 tcursor(int mode) {
1301 static TCursor c;
1302
1303 if(mode == CURSOR_SAVE) {
1304 c = term.c;
1305 } else if(mode == CURSOR_LOAD) {
1306 term.c = c;
1307 tmoveto(c.x, c.y);
1308 }
1309 }
1310
1311 void
1312 treset(void) {
1313 uint i;
1314
1315 term.c = (TCursor){{
1316 .mode = ATTR_NULL,
1317 .fg = defaultfg,
1318 .bg = defaultbg
1319 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1320
1321 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1322 for(i = tabspaces; i < term.col; i += tabspaces)
1323 term.tabs[i] = 1;
1324 term.top = 0;
1325 term.bot = term.row - 1;
1326 term.mode = MODE_WRAP;
1327
1328 tclearregion(0, 0, term.col-1, term.row-1);
1329 tmoveto(0, 0);
1330 tcursor(CURSOR_SAVE);
1331 }
1332
1333 void
1334 tnew(int col, int row) {
1335 memset(&term, 0, sizeof(Term));
1336 tresize(col, row);
1337 term.numlock = 1;
1338
1339 treset();
1340 }
1341
1342 void
1343 tswapscreen(void) {
1344 Line *tmp = term.line;
1345
1346 term.line = term.alt;
1347 term.alt = tmp;
1348 term.mode ^= MODE_ALTSCREEN;
1349 tfulldirt();
1350 }
1351
1352 void
1353 tscrolldown(int orig, int n) {
1354 int i;
1355 Line temp;
1356
1357 LIMIT(n, 0, term.bot-orig+1);
1358
1359 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1360
1361 for(i = term.bot; i >= orig+n; i--) {
1362 temp = term.line[i];
1363 term.line[i] = term.line[i-n];
1364 term.line[i-n] = temp;
1365
1366 term.dirty[i] = 1;
1367 term.dirty[i-n] = 1;
1368 }
1369
1370 selscroll(orig, n);
1371 }
1372
1373 void
1374 tscrollup(int orig, int n) {
1375 int i;
1376 Line temp;
1377 LIMIT(n, 0, term.bot-orig+1);
1378
1379 tclearregion(0, orig, term.col-1, orig+n-1);
1380
1381 for(i = orig; i <= term.bot-n; i++) {
1382 temp = term.line[i];
1383 term.line[i] = term.line[i+n];
1384 term.line[i+n] = temp;
1385
1386 term.dirty[i] = 1;
1387 term.dirty[i+n] = 1;
1388 }
1389
1390 selscroll(orig, -n);
1391 }
1392
1393 void
1394 selscroll(int orig, int n) {
1395 if(sel.bx == -1)
1396 return;
1397
1398 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1399 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1400 sel.bx = -1;
1401 return;
1402 }
1403 if(sel.type == SEL_RECTANGULAR) {
1404 if(sel.by < term.top)
1405 sel.by = term.top;
1406 if(sel.ey > term.bot)
1407 sel.ey = term.bot;
1408 } else {
1409 if(sel.by < term.top) {
1410 sel.by = term.top;
1411 sel.bx = 0;
1412 }
1413 if(sel.ey > term.bot) {
1414 sel.ey = term.bot;
1415 sel.ex = term.col;
1416 }
1417 }
1418 sel.b.y = sel.by, sel.b.x = sel.bx;
1419 sel.e.y = sel.ey, sel.e.x = sel.ex;
1420 }
1421 }
1422
1423 void
1424 tnewline(int first_col) {
1425 int y = term.c.y;
1426
1427 if(y == term.bot) {
1428 tscrollup(term.top, 1);
1429 } else {
1430 y++;
1431 }
1432 tmoveto(first_col ? 0 : term.c.x, y);
1433 }
1434
1435 void
1436 csiparse(void) {
1437 char *p = csiescseq.buf, *np;
1438 long int v;
1439
1440 csiescseq.narg = 0;
1441 if(*p == '?') {
1442 csiescseq.priv = 1;
1443 p++;
1444 }
1445
1446 csiescseq.buf[csiescseq.len] = '\0';
1447 while(p < csiescseq.buf+csiescseq.len) {
1448 np = NULL;
1449 v = strtol(p, &np, 10);
1450 if(np == p)
1451 v = 0;
1452 if(v == LONG_MAX || v == LONG_MIN)
1453 v = -1;
1454 csiescseq.arg[csiescseq.narg++] = v;
1455 p = np;
1456 if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1457 break;
1458 p++;
1459 }
1460 csiescseq.mode = *p;
1461 }
1462
1463 /* for absolute user moves, when decom is set */
1464 void
1465 tmoveato(int x, int y) {
1466 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1467 }
1468
1469 void
1470 tmoveto(int x, int y) {
1471 int miny, maxy;
1472
1473 if(term.c.state & CURSOR_ORIGIN) {
1474 miny = term.top;
1475 maxy = term.bot;
1476 } else {
1477 miny = 0;
1478 maxy = term.row - 1;
1479 }
1480 LIMIT(x, 0, term.col-1);
1481 LIMIT(y, miny, maxy);
1482 term.c.state &= ~CURSOR_WRAPNEXT;
1483 term.c.x = x;
1484 term.c.y = y;
1485 }
1486
1487 void
1488 tsetchar(char *c, Glyph *attr, int x, int y) {
1489 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1490 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1491 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1492 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1493 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1494 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1495 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1496 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1497 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1498 };
1499
1500 /*
1501 * The table is proudly stolen from rxvt.
1502 */
1503 if(attr->mode & ATTR_GFX) {
1504 if(c[0] >= 0x41 && c[0] <= 0x7e
1505 && vt100_0[c[0] - 0x41]) {
1506 c = vt100_0[c[0] - 0x41];
1507 }
1508 }
1509
1510 term.dirty[y] = 1;
1511 term.line[y][x] = *attr;
1512 memcpy(term.line[y][x].c, c, UTF_SIZ);
1513 }
1514
1515 void
1516 tclearregion(int x1, int y1, int x2, int y2) {
1517 int x, y, temp;
1518
1519 if(x1 > x2)
1520 temp = x1, x1 = x2, x2 = temp;
1521 if(y1 > y2)
1522 temp = y1, y1 = y2, y2 = temp;
1523
1524 LIMIT(x1, 0, term.col-1);
1525 LIMIT(x2, 0, term.col-1);
1526 LIMIT(y1, 0, term.row-1);
1527 LIMIT(y2, 0, term.row-1);
1528
1529 for(y = y1; y <= y2; y++) {
1530 term.dirty[y] = 1;
1531 for(x = x1; x <= x2; x++) {
1532 if(selected(x, y))
1533 selclear(NULL);
1534 term.line[y][x] = term.c.attr;
1535 memcpy(term.line[y][x].c, " ", 2);
1536 }
1537 }
1538 }
1539
1540 void
1541 tdeletechar(int n) {
1542 int src = term.c.x + n;
1543 int dst = term.c.x;
1544 int size = term.col - src;
1545
1546 term.dirty[term.c.y] = 1;
1547
1548 if(src >= term.col) {
1549 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1550 return;
1551 }
1552
1553 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1554 size * sizeof(Glyph));
1555 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1556 }
1557
1558 void
1559 tinsertblank(int n) {
1560 int src = term.c.x;
1561 int dst = src + n;
1562 int size = term.col - dst;
1563
1564 term.dirty[term.c.y] = 1;
1565
1566 if(dst >= term.col) {
1567 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1568 return;
1569 }
1570
1571 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1572 size * sizeof(Glyph));
1573 tclearregion(src, term.c.y, dst - 1, term.c.y);
1574 }
1575
1576 void
1577 tinsertblankline(int n) {
1578 if(term.c.y < term.top || term.c.y > term.bot)
1579 return;
1580
1581 tscrolldown(term.c.y, n);
1582 }
1583
1584 void
1585 tdeleteline(int n) {
1586 if(term.c.y < term.top || term.c.y > term.bot)
1587 return;
1588
1589 tscrollup(term.c.y, n);
1590 }
1591
1592 void
1593 tsetattr(int *attr, int l) {
1594 int i;
1595
1596 for(i = 0; i < l; i++) {
1597 switch(attr[i]) {
1598 case 0:
1599 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE \
1600 | ATTR_BOLD | ATTR_ITALIC \
1601 | ATTR_BLINK);
1602 term.c.attr.fg = defaultfg;
1603 term.c.attr.bg = defaultbg;
1604 break;
1605 case 1:
1606 term.c.attr.mode |= ATTR_BOLD;
1607 break;
1608 case 3:
1609 term.c.attr.mode |= ATTR_ITALIC;
1610 break;
1611 case 4:
1612 term.c.attr.mode |= ATTR_UNDERLINE;
1613 break;
1614 case 5: /* slow blink */
1615 case 6: /* rapid blink */
1616 term.c.attr.mode |= ATTR_BLINK;
1617 break;
1618 case 7:
1619 term.c.attr.mode |= ATTR_REVERSE;
1620 break;
1621 case 21:
1622 case 22:
1623 term.c.attr.mode &= ~ATTR_BOLD;
1624 break;
1625 case 23:
1626 term.c.attr.mode &= ~ATTR_ITALIC;
1627 break;
1628 case 24:
1629 term.c.attr.mode &= ~ATTR_UNDERLINE;
1630 break;
1631 case 25:
1632 case 26:
1633 term.c.attr.mode &= ~ATTR_BLINK;
1634 break;
1635 case 27:
1636 term.c.attr.mode &= ~ATTR_REVERSE;
1637 break;
1638 case 38:
1639 if(i + 2 < l && attr[i + 1] == 5) {
1640 i += 2;
1641 if(BETWEEN(attr[i], 0, 255)) {
1642 term.c.attr.fg = attr[i];
1643 } else {
1644 fprintf(stderr,
1645 "erresc: bad fgcolor %d\n",
1646 attr[i]);
1647 }
1648 } else {
1649 fprintf(stderr,
1650 "erresc(38): gfx attr %d unknown\n",
1651 attr[i]);
1652 }
1653 break;
1654 case 39:
1655 term.c.attr.fg = defaultfg;
1656 break;
1657 case 48:
1658 if(i + 2 < l && attr[i + 1] == 5) {
1659 i += 2;
1660 if(BETWEEN(attr[i], 0, 255)) {
1661 term.c.attr.bg = attr[i];
1662 } else {
1663 fprintf(stderr,
1664 "erresc: bad bgcolor %d\n",
1665 attr[i]);
1666 }
1667 } else {
1668 fprintf(stderr,
1669 "erresc(48): gfx attr %d unknown\n",
1670 attr[i]);
1671 }
1672 break;
1673 case 49:
1674 term.c.attr.bg = defaultbg;
1675 break;
1676 default:
1677 if(BETWEEN(attr[i], 30, 37)) {
1678 term.c.attr.fg = attr[i] - 30;
1679 } else if(BETWEEN(attr[i], 40, 47)) {
1680 term.c.attr.bg = attr[i] - 40;
1681 } else if(BETWEEN(attr[i], 90, 97)) {
1682 term.c.attr.fg = attr[i] - 90 + 8;
1683 } else if(BETWEEN(attr[i], 100, 107)) {
1684 term.c.attr.bg = attr[i] - 100 + 8;
1685 } else {
1686 fprintf(stderr,
1687 "erresc(default): gfx attr %d unknown\n",
1688 attr[i]), csidump();
1689 }
1690 break;
1691 }
1692 }
1693 }
1694
1695 void
1696 tsetscroll(int t, int b) {
1697 int temp;
1698
1699 LIMIT(t, 0, term.row-1);
1700 LIMIT(b, 0, term.row-1);
1701 if(t > b) {
1702 temp = t;
1703 t = b;
1704 b = temp;
1705 }
1706 term.top = t;
1707 term.bot = b;
1708 }
1709
1710 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1711
1712 void
1713 tsetmode(bool priv, bool set, int *args, int narg) {
1714 int *lim, mode;
1715 bool alt;
1716
1717 for(lim = args + narg; args < lim; ++args) {
1718 if(priv) {
1719 switch(*args) {
1720 break;
1721 case 1: /* DECCKM -- Cursor key */
1722 MODBIT(term.mode, set, MODE_APPCURSOR);
1723 break;
1724 case 5: /* DECSCNM -- Reverse video */
1725 mode = term.mode;
1726 MODBIT(term.mode, set, MODE_REVERSE);
1727 if(mode != term.mode)
1728 redraw(REDRAW_TIMEOUT);
1729 break;
1730 case 6: /* DECOM -- Origin */
1731 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1732 tmoveato(0, 0);
1733 break;
1734 case 7: /* DECAWM -- Auto wrap */
1735 MODBIT(term.mode, set, MODE_WRAP);
1736 break;
1737 case 0: /* Error (IGNORED) */
1738 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1739 case 3: /* DECCOLM -- Column (IGNORED) */
1740 case 4: /* DECSCLM -- Scroll (IGNORED) */
1741 case 8: /* DECARM -- Auto repeat (IGNORED) */
1742 case 18: /* DECPFF -- Printer feed (IGNORED) */
1743 case 19: /* DECPEX -- Printer extent (IGNORED) */
1744 case 42: /* DECNRCM -- National characters (IGNORED) */
1745 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1746 break;
1747 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1748 MODBIT(term.mode, !set, MODE_HIDE);
1749 break;
1750 case 1000: /* 1000,1002: enable xterm mouse report */
1751 MODBIT(term.mode, set, MODE_MOUSEBTN);
1752 MODBIT(term.mode, 0, MODE_MOUSEMOTION);
1753 break;
1754 case 1002:
1755 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1756 MODBIT(term.mode, 0, MODE_MOUSEBTN);
1757 break;
1758 case 1006:
1759 MODBIT(term.mode, set, MODE_MOUSESGR);
1760 break;
1761 case 1034:
1762 MODBIT(term.mode, set, MODE_8BIT);
1763 break;
1764 case 1049: /* = 1047 and 1048 */
1765 case 47:
1766 case 1047:
1767 if (!allowaltscreen)
1768 break;
1769
1770 alt = IS_SET(MODE_ALTSCREEN);
1771 if(alt) {
1772 tclearregion(0, 0, term.col-1,
1773 term.row-1);
1774 }
1775 if(set ^ alt) /* set is always 1 or 0 */
1776 tswapscreen();
1777 if(*args != 1049)
1778 break;
1779 /* FALLTRU */
1780 case 1048:
1781 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1782 break;
1783 default:
1784 fprintf(stderr,
1785 "erresc: unknown private set/reset mode %d\n",
1786 *args);
1787 break;
1788 }
1789 } else {
1790 switch(*args) {
1791 case 0: /* Error (IGNORED) */
1792 break;
1793 case 2: /* KAM -- keyboard action */
1794 MODBIT(term.mode, set, MODE_KBDLOCK);
1795 break;
1796 case 4: /* IRM -- Insertion-replacement */
1797 MODBIT(term.mode, set, MODE_INSERT);
1798 break;
1799 case 12: /* SRM -- Send/Receive */
1800 MODBIT(term.mode, !set, MODE_ECHO);
1801 break;
1802 case 20: /* LNM -- Linefeed/new line */
1803 MODBIT(term.mode, set, MODE_CRLF);
1804 break;
1805 default:
1806 fprintf(stderr,
1807 "erresc: unknown set/reset mode %d\n",
1808 *args);
1809 break;
1810 }
1811 }
1812 }
1813 }
1814 #undef MODBIT
1815
1816
1817 void
1818 csihandle(void) {
1819 switch(csiescseq.mode) {
1820 default:
1821 unknown:
1822 fprintf(stderr, "erresc: unknown csi ");
1823 csidump();
1824 /* die(""); */
1825 break;
1826 case '@': /* ICH -- Insert <n> blank char */
1827 DEFAULT(csiescseq.arg[0], 1);
1828 tinsertblank(csiescseq.arg[0]);
1829 break;
1830 case 'A': /* CUU -- Cursor <n> Up */
1831 DEFAULT(csiescseq.arg[0], 1);
1832 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1833 break;
1834 case 'B': /* CUD -- Cursor <n> Down */
1835 case 'e': /* VPR --Cursor <n> Down */
1836 DEFAULT(csiescseq.arg[0], 1);
1837 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1838 break;
1839 case 'c': /* DA -- Device Attributes */
1840 if(csiescseq.arg[0] == 0)
1841 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1842 break;
1843 case 'C': /* CUF -- Cursor <n> Forward */
1844 case 'a': /* HPR -- Cursor <n> Forward */
1845 DEFAULT(csiescseq.arg[0], 1);
1846 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1847 break;
1848 case 'D': /* CUB -- Cursor <n> Backward */
1849 DEFAULT(csiescseq.arg[0], 1);
1850 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1851 break;
1852 case 'E': /* CNL -- Cursor <n> Down and first col */
1853 DEFAULT(csiescseq.arg[0], 1);
1854 tmoveto(0, term.c.y+csiescseq.arg[0]);
1855 break;
1856 case 'F': /* CPL -- Cursor <n> Up and first col */
1857 DEFAULT(csiescseq.arg[0], 1);
1858 tmoveto(0, term.c.y-csiescseq.arg[0]);
1859 break;
1860 case 'g': /* TBC -- Tabulation clear */
1861 switch(csiescseq.arg[0]) {
1862 case 0: /* clear current tab stop */
1863 term.tabs[term.c.x] = 0;
1864 break;
1865 case 3: /* clear all the tabs */
1866 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1867 break;
1868 default:
1869 goto unknown;
1870 }
1871 break;
1872 case 'G': /* CHA -- Move to <col> */
1873 case '`': /* HPA */
1874 DEFAULT(csiescseq.arg[0], 1);
1875 tmoveto(csiescseq.arg[0]-1, term.c.y);
1876 break;
1877 case 'H': /* CUP -- Move to <row> <col> */
1878 case 'f': /* HVP */
1879 DEFAULT(csiescseq.arg[0], 1);
1880 DEFAULT(csiescseq.arg[1], 1);
1881 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1882 break;
1883 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1884 DEFAULT(csiescseq.arg[0], 1);
1885 while(csiescseq.arg[0]--)
1886 tputtab(1);
1887 break;
1888 case 'J': /* ED -- Clear screen */
1889 sel.bx = -1;
1890 switch(csiescseq.arg[0]) {
1891 case 0: /* below */
1892 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1893 if(term.c.y < term.row-1) {
1894 tclearregion(0, term.c.y+1, term.col-1,
1895 term.row-1);
1896 }
1897 break;
1898 case 1: /* above */
1899 if(term.c.y > 1)
1900 tclearregion(0, 0, term.col-1, term.c.y-1);
1901 tclearregion(0, term.c.y, term.c.x, term.c.y);
1902 break;
1903 case 2: /* all */
1904 tclearregion(0, 0, term.col-1, term.row-1);
1905 break;
1906 default:
1907 goto unknown;
1908 }
1909 break;
1910 case 'K': /* EL -- Clear line */
1911 switch(csiescseq.arg[0]) {
1912 case 0: /* right */
1913 tclearregion(term.c.x, term.c.y, term.col-1,
1914 term.c.y);
1915 break;
1916 case 1: /* left */
1917 tclearregion(0, term.c.y, term.c.x, term.c.y);
1918 break;
1919 case 2: /* all */
1920 tclearregion(0, term.c.y, term.col-1, term.c.y);
1921 break;
1922 }
1923 break;
1924 case 'S': /* SU -- Scroll <n> line up */
1925 DEFAULT(csiescseq.arg[0], 1);
1926 tscrollup(term.top, csiescseq.arg[0]);
1927 break;
1928 case 'T': /* SD -- Scroll <n> line down */
1929 DEFAULT(csiescseq.arg[0], 1);
1930 tscrolldown(term.top, csiescseq.arg[0]);
1931 break;
1932 case 'L': /* IL -- Insert <n> blank lines */
1933 DEFAULT(csiescseq.arg[0], 1);
1934 tinsertblankline(csiescseq.arg[0]);
1935 break;
1936 case 'l': /* RM -- Reset Mode */
1937 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1938 break;
1939 case 'M': /* DL -- Delete <n> lines */
1940 DEFAULT(csiescseq.arg[0], 1);
1941 tdeleteline(csiescseq.arg[0]);
1942 break;
1943 case 'X': /* ECH -- Erase <n> char */
1944 DEFAULT(csiescseq.arg[0], 1);
1945 tclearregion(term.c.x, term.c.y,
1946 term.c.x + csiescseq.arg[0] - 1, term.c.y);
1947 break;
1948 case 'P': /* DCH -- Delete <n> char */
1949 DEFAULT(csiescseq.arg[0], 1);
1950 tdeletechar(csiescseq.arg[0]);
1951 break;
1952 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1953 DEFAULT(csiescseq.arg[0], 1);
1954 while(csiescseq.arg[0]--)
1955 tputtab(0);
1956 break;
1957 case 'd': /* VPA -- Move to <row> */
1958 DEFAULT(csiescseq.arg[0], 1);
1959 tmoveato(term.c.x, csiescseq.arg[0]-1);
1960 break;
1961 case 'h': /* SM -- Set terminal mode */
1962 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1963 break;
1964 case 'm': /* SGR -- Terminal attribute (color) */
1965 tsetattr(csiescseq.arg, csiescseq.narg);
1966 break;
1967 case 'r': /* DECSTBM -- Set Scrolling Region */
1968 if(csiescseq.priv) {
1969 goto unknown;
1970 } else {
1971 DEFAULT(csiescseq.arg[0], 1);
1972 DEFAULT(csiescseq.arg[1], term.row);
1973 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1974 tmoveato(0, 0);
1975 }
1976 break;
1977 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1978 tcursor(CURSOR_SAVE);
1979 break;
1980 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1981 tcursor(CURSOR_LOAD);
1982 break;
1983 }
1984 }
1985
1986 void
1987 csidump(void) {
1988 int i;
1989 uint c;
1990
1991 printf("ESC[");
1992 for(i = 0; i < csiescseq.len; i++) {
1993 c = csiescseq.buf[i] & 0xff;
1994 if(isprint(c)) {
1995 putchar(c);
1996 } else if(c == '\n') {
1997 printf("(\\n)");
1998 } else if(c == '\r') {
1999 printf("(\\r)");
2000 } else if(c == 0x1b) {
2001 printf("(\\e)");
2002 } else {
2003 printf("(%02x)", c);
2004 }
2005 }
2006 putchar('\n');
2007 }
2008
2009 void
2010 csireset(void) {
2011 memset(&csiescseq, 0, sizeof(csiescseq));
2012 }
2013
2014 void
2015 strhandle(void) {
2016 char *p = NULL;
2017 int i, j, narg;
2018
2019 strparse();
2020 narg = strescseq.narg;
2021
2022 switch(strescseq.type) {
2023 case ']': /* OSC -- Operating System Command */
2024 switch(i = atoi(strescseq.args[0])) {
2025 case 0:
2026 case 1:
2027 case 2:
2028 if(narg > 1)
2029 xsettitle(strescseq.args[1]);
2030 break;
2031 case 4: /* color set */
2032 if(narg < 3)
2033 break;
2034 p = strescseq.args[2];
2035 /* fall through */
2036 case 104: /* color reset, here p = NULL */
2037 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2038 if (!xsetcolorname(j, p)) {
2039 fprintf(stderr, "erresc: invalid color %s\n", p);
2040 } else {
2041 /*
2042 * TODO if defaultbg color is changed, borders
2043 * are dirty
2044 */
2045 redraw(0);
2046 }
2047 break;
2048 default:
2049 fprintf(stderr, "erresc: unknown str ");
2050 strdump();
2051 break;
2052 }
2053 break;
2054 case 'k': /* old title set compatibility */
2055 xsettitle(strescseq.args[0]);
2056 break;
2057 case 'P': /* DSC -- Device Control String */
2058 case '_': /* APC -- Application Program Command */
2059 case '^': /* PM -- Privacy Message */
2060 default:
2061 fprintf(stderr, "erresc: unknown str ");
2062 strdump();
2063 /* die(""); */
2064 break;
2065 }
2066 }
2067
2068 void
2069 strparse(void) {
2070 char *p = strescseq.buf;
2071
2072 strescseq.narg = 0;
2073 strescseq.buf[strescseq.len] = '\0';
2074 while(p && strescseq.narg < STR_ARG_SIZ)
2075 strescseq.args[strescseq.narg++] = strsep(&p, ";");
2076 }
2077
2078 void
2079 strdump(void) {
2080 int i;
2081 uint c;
2082
2083 printf("ESC%c", strescseq.type);
2084 for(i = 0; i < strescseq.len; i++) {
2085 c = strescseq.buf[i] & 0xff;
2086 if(c == '\0') {
2087 return;
2088 } else if(isprint(c)) {
2089 putchar(c);
2090 } else if(c == '\n') {
2091 printf("(\\n)");
2092 } else if(c == '\r') {
2093 printf("(\\r)");
2094 } else if(c == 0x1b) {
2095 printf("(\\e)");
2096 } else {
2097 printf("(%02x)", c);
2098 }
2099 }
2100 printf("ESC\\\n");
2101 }
2102
2103 void
2104 strreset(void) {
2105 memset(&strescseq, 0, sizeof(strescseq));
2106 }
2107
2108 void
2109 tputtab(bool forward) {
2110 uint x = term.c.x;
2111
2112 if(forward) {
2113 if(x == term.col)
2114 return;
2115 for(++x; x < term.col && !term.tabs[x]; ++x)
2116 /* nothing */ ;
2117 } else {
2118 if(x == 0)
2119 return;
2120 for(--x; x > 0 && !term.tabs[x]; --x)
2121 /* nothing */ ;
2122 }
2123 tmoveto(x, term.c.y);
2124 }
2125
2126 void
2127 techo(char *buf, int len) {
2128 for(; len > 0; buf++, len--) {
2129 char c = *buf;
2130
2131 if(c == '\033') { /* escape */
2132 tputc("^", 1);
2133 tputc("[", 1);
2134 } else if(c < '\x20') { /* control code */
2135 if(c != '\n' && c != '\r' && c != '\t') {
2136 c |= '\x40';
2137 tputc("^", 1);
2138 }
2139 tputc(&c, 1);
2140 } else {
2141 break;
2142 }
2143 }
2144 if(len)
2145 tputc(buf, len);
2146 }
2147
2148 void
2149 tputc(char *c, int len) {
2150 uchar ascii = *c;
2151 bool control = ascii < '\x20' || ascii == 0177;
2152
2153 if(iofd != -1) {
2154 if(xwrite(iofd, c, len) < 0) {
2155 fprintf(stderr, "Error writing in %s:%s\n",
2156 opt_io, strerror(errno));
2157 close(iofd);
2158 iofd = -1;
2159 }
2160 }
2161
2162 /*
2163 * STR sequences must be checked before anything else
2164 * because it can use some control codes as part of the sequence.
2165 */
2166 if(term.esc & ESC_STR) {
2167 switch(ascii) {
2168 case '\033':
2169 term.esc = ESC_START | ESC_STR_END;
2170 break;
2171 case '\a': /* backwards compatibility to xterm */
2172 term.esc = 0;
2173 strhandle();
2174 break;
2175 default:
2176 if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
2177 memmove(&strescseq.buf[strescseq.len], c, len);
2178 strescseq.len += len;
2179 } else {
2180 /*
2181 * Here is a bug in terminals. If the user never sends
2182 * some code to stop the str or esc command, then st
2183 * will stop responding. But this is better than
2184 * silently failing with unknown characters. At least
2185 * then users will report back.
2186 *
2187 * In the case users ever get fixed, here is the code:
2188 */
2189 /*
2190 * term.esc = 0;
2191 * strhandle();
2192 */
2193 }
2194 }
2195 return;
2196 }
2197
2198 /*
2199 * Actions of control codes must be performed as soon they arrive
2200 * because they can be embedded inside a control sequence, and
2201 * they must not cause conflicts with sequences.
2202 */
2203 if(control) {
2204 switch(ascii) {
2205 case '\t': /* HT */
2206 tputtab(1);
2207 return;
2208 case '\b': /* BS */
2209 tmoveto(term.c.x-1, term.c.y);
2210 return;
2211 case '\r': /* CR */
2212 tmoveto(0, term.c.y);
2213 return;
2214 case '\f': /* LF */
2215 case '\v': /* VT */
2216 case '\n': /* LF */
2217 /* go to first col if the mode is set */
2218 tnewline(IS_SET(MODE_CRLF));
2219 return;
2220 case '\a': /* BEL */
2221 if(!(xw.state & WIN_FOCUSED))
2222 xseturgency(1);
2223 return;
2224 case '\033': /* ESC */
2225 csireset();
2226 term.esc = ESC_START;
2227 return;
2228 case '\016': /* SO */
2229 case '\017': /* SI */
2230 /*
2231 * Different charsets are hard to handle. Applications
2232 * should use the right alt charset escapes for the
2233 * only reason they still exist: line drawing. The
2234 * rest is incompatible history st should not support.
2235 */
2236 return;
2237 case '\032': /* SUB */
2238 case '\030': /* CAN */
2239 csireset();
2240 return;
2241 case '\005': /* ENQ (IGNORED) */
2242 case '\000': /* NUL (IGNORED) */
2243 case '\021': /* XON (IGNORED) */
2244 case '\023': /* XOFF (IGNORED) */
2245 case 0177: /* DEL (IGNORED) */
2246 return;
2247 }
2248 } else if(term.esc & ESC_START) {
2249 if(term.esc & ESC_CSI) {
2250 csiescseq.buf[csiescseq.len++] = ascii;
2251 if(BETWEEN(ascii, 0x40, 0x7E)
2252 || csiescseq.len >= \
2253 sizeof(csiescseq.buf)-1) {
2254 term.esc = 0;
2255 csiparse();
2256 csihandle();
2257 }
2258 } else if(term.esc & ESC_STR_END) {
2259 term.esc = 0;
2260 if(ascii == '\\')
2261 strhandle();
2262 } else if(term.esc & ESC_ALTCHARSET) {
2263 switch(ascii) {
2264 case '0': /* Line drawing set */
2265 term.c.attr.mode |= ATTR_GFX;
2266 break;
2267 case 'B': /* USASCII */
2268 term.c.attr.mode &= ~ATTR_GFX;
2269 break;
2270 case 'A': /* UK (IGNORED) */
2271 case '<': /* multinational charset (IGNORED) */
2272 case '5': /* Finnish (IGNORED) */
2273 case 'C': /* Finnish (IGNORED) */
2274 case 'K': /* German (IGNORED) */
2275 break;
2276 default:
2277 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2278 }
2279 term.esc = 0;
2280 } else if(term.esc & ESC_TEST) {
2281 if(ascii == '8') { /* DEC screen alignment test. */
2282 char E[UTF_SIZ] = "E";
2283 int x, y;
2284
2285 for(x = 0; x < term.col; ++x) {
2286 for(y = 0; y < term.row; ++y)
2287 tsetchar(E, &term.c.attr, x, y);
2288 }
2289 }
2290 term.esc = 0;
2291 } else {
2292 switch(ascii) {
2293 case '[':
2294 term.esc |= ESC_CSI;
2295 break;
2296 case '#':
2297 term.esc |= ESC_TEST;
2298 break;
2299 case 'P': /* DCS -- Device Control String */
2300 case '_': /* APC -- Application Program Command */
2301 case '^': /* PM -- Privacy Message */
2302 case ']': /* OSC -- Operating System Command */
2303 case 'k': /* old title set compatibility */
2304 strreset();
2305 strescseq.type = ascii;
2306 term.esc |= ESC_STR;
2307 break;
2308 case '(': /* set primary charset G0 */
2309 term.esc |= ESC_ALTCHARSET;
2310 break;
2311 case ')': /* set secondary charset G1 (IGNORED) */
2312 case '*': /* set tertiary charset G2 (IGNORED) */
2313 case '+': /* set quaternary charset G3 (IGNORED) */
2314 term.esc = 0;
2315 break;
2316 case 'D': /* IND -- Linefeed */
2317 if(term.c.y == term.bot) {
2318 tscrollup(term.top, 1);
2319 } else {
2320 tmoveto(term.c.x, term.c.y+1);
2321 }
2322 term.esc = 0;
2323 break;
2324 case 'E': /* NEL -- Next line */
2325 tnewline(1); /* always go to first col */
2326 term.esc = 0;
2327 break;
2328 case 'H': /* HTS -- Horizontal tab stop */
2329 term.tabs[term.c.x] = 1;
2330 term.esc = 0;
2331 break;
2332 case 'M': /* RI -- Reverse index */
2333 if(term.c.y == term.top) {
2334 tscrolldown(term.top, 1);
2335 } else {
2336 tmoveto(term.c.x, term.c.y-1);
2337 }
2338 term.esc = 0;
2339 break;
2340 case 'Z': /* DECID -- Identify Terminal */
2341 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2342 term.esc = 0;
2343 break;
2344 case 'c': /* RIS -- Reset to inital state */
2345 treset();
2346 term.esc = 0;
2347 xresettitle();
2348 break;
2349 case '=': /* DECPAM -- Application keypad */
2350 term.mode |= MODE_APPKEYPAD;
2351 term.esc = 0;
2352 break;
2353 case '>': /* DECPNM -- Normal keypad */
2354 term.mode &= ~MODE_APPKEYPAD;
2355 term.esc = 0;
2356 break;
2357 case '7': /* DECSC -- Save Cursor */
2358 tcursor(CURSOR_SAVE);
2359 term.esc = 0;
2360 break;
2361 case '8': /* DECRC -- Restore Cursor */
2362 tcursor(CURSOR_LOAD);
2363 term.esc = 0;
2364 break;
2365 case '\\': /* ST -- Stop */
2366 term.esc = 0;
2367 break;
2368 default:
2369 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2370 (uchar) ascii, isprint(ascii)? ascii:'.');
2371 term.esc = 0;
2372 }
2373 }
2374 /*
2375 * All characters which form part of a sequence are not
2376 * printed
2377 */
2378 return;
2379 }
2380 /*
2381 * Display control codes only if we are in graphic mode
2382 */
2383 if(control && !(term.c.attr.mode & ATTR_GFX))
2384 return;
2385 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2386 sel.bx = -1;
2387 if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2388 term.line[term.c.y][term.c.x].mode |= ATTR_WRAP;
2389 tnewline(1);
2390 }
2391
2392 if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col) {
2393 memmove(&term.line[term.c.y][term.c.x+1],
2394 &term.line[term.c.y][term.c.x],
2395 (term.col - term.c.x - 1) * sizeof(Glyph));
2396 }
2397
2398 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2399 if(term.c.x+1 < term.col) {
2400 tmoveto(term.c.x+1, term.c.y);
2401 } else {
2402 term.c.state |= CURSOR_WRAPNEXT;
2403 }
2404 }
2405
2406 int
2407 tresize(int col, int row) {
2408 int i;
2409 int minrow = MIN(row, term.row);
2410 int mincol = MIN(col, term.col);
2411 int slide = term.c.y - row + 1;
2412 bool *bp;
2413 Line *orig;
2414
2415 if(col < 1 || row < 1)
2416 return 0;
2417
2418 /* free unneeded rows */
2419 i = 0;
2420 if(slide > 0) {
2421 /*
2422 * slide screen to keep cursor where we expect it -
2423 * tscrollup would work here, but we can optimize to
2424 * memmove because we're freeing the earlier lines
2425 */
2426 for(/* i = 0 */; i < slide; i++) {
2427 free(term.line[i]);
2428 free(term.alt[i]);
2429 }
2430 memmove(term.line, term.line + slide, row * sizeof(Line));
2431 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2432 }
2433 for(i += row; i < term.row; i++) {
2434 free(term.line[i]);
2435 free(term.alt[i]);
2436 }
2437
2438 /* resize to new height */
2439 term.line = xrealloc(term.line, row * sizeof(Line));
2440 term.alt = xrealloc(term.alt, row * sizeof(Line));
2441 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2442 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2443
2444 /* resize each row to new width, zero-pad if needed */
2445 for(i = 0; i < minrow; i++) {
2446 term.dirty[i] = 1;
2447 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2448 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2449 }
2450
2451 /* allocate any new rows */
2452 for(/* i == minrow */; i < row; i++) {
2453 term.dirty[i] = 1;
2454 term.line[i] = xcalloc(col, sizeof(Glyph));
2455 term.alt [i] = xcalloc(col, sizeof(Glyph));
2456 }
2457 if(col > term.col) {
2458 bp = term.tabs + term.col;
2459
2460 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2461 while(--bp > term.tabs && !*bp)
2462 /* nothing */ ;
2463 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2464 *bp = 1;
2465 }
2466 /* update terminal size */
2467 term.col = col;
2468 term.row = row;
2469 /* reset scrolling region */
2470 tsetscroll(0, row-1);
2471 /* make use of the LIMIT in tmoveto */
2472 tmoveto(term.c.x, term.c.y);
2473 /* Clearing both screens */
2474 orig = term.line;
2475 do {
2476 if(mincol < col && 0 < minrow) {
2477 tclearregion(mincol, 0, col - 1, minrow - 1);
2478 }
2479 if(0 < col && minrow < row) {
2480 tclearregion(0, minrow, col - 1, row - 1);
2481 }
2482 tswapscreen();
2483 } while(orig != term.line);
2484
2485 return (slide > 0);
2486 }
2487
2488 void
2489 xresize(int col, int row) {
2490 xw.tw = MAX(1, col * xw.cw);
2491 xw.th = MAX(1, row * xw.ch);
2492
2493 XFreePixmap(xw.dpy, xw.buf);
2494 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2495 DefaultDepth(xw.dpy, xw.scr));
2496 XftDrawChange(xw.draw, xw.buf);
2497 xclear(0, 0, xw.w, xw.h);
2498 }
2499
2500 static inline ushort
2501 sixd_to_16bit(int x) {
2502 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
2503 }
2504
2505 void
2506 xloadcols(void) {
2507 int i, r, g, b;
2508 XRenderColor color = { .alpha = 0xffff };
2509
2510 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2511 for(i = 0; i < LEN(colorname); i++) {
2512 if(!colorname[i])
2513 continue;
2514 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2515 die("Could not allocate color '%s'\n", colorname[i]);
2516 }
2517 }
2518
2519 /* load colors [16-255] ; same colors as xterm */
2520 for(i = 16, r = 0; r < 6; r++) {
2521 for(g = 0; g < 6; g++) {
2522 for(b = 0; b < 6; b++) {
2523 color.red = sixd_to_16bit(r);
2524 color.green = sixd_to_16bit(g);
2525 color.blue = sixd_to_16bit(b);
2526 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
2527 die("Could not allocate color %d\n", i);
2528 }
2529 i++;
2530 }
2531 }
2532 }
2533
2534 for(r = 0; r < 24; r++, i++) {
2535 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
2536 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
2537 &dc.col[i])) {
2538 die("Could not allocate color %d\n", i);
2539 }
2540 }
2541 }
2542
2543 int
2544 xsetcolorname(int x, const char *name) {
2545 XRenderColor color = { .alpha = 0xffff };
2546 Colour colour;
2547 if (x < 0 || x > LEN(colorname))
2548 return -1;
2549 if(!name) {
2550 if(16 <= x && x < 16 + 216) {
2551 int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
2552 color.red = sixd_to_16bit(r);
2553 color.green = sixd_to_16bit(g);
2554 color.blue = sixd_to_16bit(b);
2555 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2556 return 0; /* something went wrong */
2557 dc.col[x] = colour;
2558 return 1;
2559 } else if (16 + 216 <= x && x < 256) {
2560 color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
2561 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2562 return 0; /* something went wrong */
2563 dc.col[x] = colour;
2564 return 1;
2565 } else {
2566 name = colorname[x];
2567 }
2568 }
2569 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
2570 return 0;
2571 dc.col[x] = colour;
2572 return 1;
2573 }
2574
2575 void
2576 xtermclear(int col1, int row1, int col2, int row2) {
2577 XftDrawRect(xw.draw,
2578 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2579 borderpx + col1 * xw.cw,
2580 borderpx + row1 * xw.ch,
2581 (col2-col1+1) * xw.cw,
2582 (row2-row1+1) * xw.ch);
2583 }
2584
2585 /*
2586 * Absolute coordinates.
2587 */
2588 void
2589 xclear(int x1, int y1, int x2, int y2) {
2590 XftDrawRect(xw.draw,
2591 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2592 x1, y1, x2-x1, y2-y1);
2593 }
2594
2595 void
2596 xhints(void) {
2597 XClassHint class = {opt_class ? opt_class : termname, termname};
2598 XWMHints wm = {.flags = InputHint, .input = 1};
2599 XSizeHints *sizeh = NULL;
2600
2601 sizeh = XAllocSizeHints();
2602 if(xw.isfixed == False) {
2603 sizeh->flags = PSize | PResizeInc | PBaseSize;
2604 sizeh->height = xw.h;
2605 sizeh->width = xw.w;
2606 sizeh->height_inc = xw.ch;
2607 sizeh->width_inc = xw.cw;
2608 sizeh->base_height = 2 * borderpx;
2609 sizeh->base_width = 2 * borderpx;
2610 } else {
2611 sizeh->flags = PMaxSize | PMinSize;
2612 sizeh->min_width = sizeh->max_width = xw.fw;
2613 sizeh->min_height = sizeh->max_height = xw.fh;
2614 }
2615
2616 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2617 XFree(sizeh);
2618 }
2619
2620 int
2621 xloadfont(Font *f, FcPattern *pattern) {
2622 FcPattern *match;
2623 FcResult result;
2624
2625 match = FcFontMatch(NULL, pattern, &result);
2626 if(!match)
2627 return 1;
2628
2629 if(!(f->set = FcFontSort(0, match, FcTrue, 0, &result))) {
2630 FcPatternDestroy(match);
2631 return 1;
2632 }
2633
2634 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
2635 FcPatternDestroy(match);
2636 return 1;
2637 }
2638
2639 f->pattern = FcPatternDuplicate(pattern);
2640
2641 f->ascent = f->match->ascent;
2642 f->descent = f->match->descent;
2643 f->lbearing = 0;
2644 f->rbearing = f->match->max_advance_width;
2645
2646 f->height = f->ascent + f->descent;
2647 f->width = f->lbearing + f->rbearing;
2648
2649 return 0;
2650 }
2651
2652 void
2653 xloadfonts(char *fontstr, int fontsize) {
2654 FcPattern *pattern;
2655 FcResult result;
2656 double fontval;
2657
2658 if(fontstr[0] == '-') {
2659 pattern = XftXlfdParse(fontstr, False, False);
2660 } else {
2661 pattern = FcNameParse((FcChar8 *)fontstr);
2662 }
2663
2664 if(!pattern)
2665 die("st: can't open font %s\n", fontstr);
2666
2667 if(fontsize > 0) {
2668 FcPatternDel(pattern, FC_PIXEL_SIZE);
2669 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2670 usedfontsize = fontsize;
2671 } else {
2672 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2673 if(result == FcResultMatch) {
2674 usedfontsize = (int)fontval;
2675 } else {
2676 /*
2677 * Default font size is 12, if none given. This is to
2678 * have a known usedfontsize value.
2679 */
2680 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2681 usedfontsize = 12;
2682 }
2683 }
2684
2685 FcConfigSubstitute(0, pattern, FcMatchPattern);
2686 FcDefaultSubstitute(pattern);
2687
2688 if(xloadfont(&dc.font, pattern))
2689 die("st: can't open font %s\n", fontstr);
2690
2691 /* Setting character width and height. */
2692 xw.cw = dc.font.width;
2693 xw.ch = dc.font.height;
2694
2695 FcPatternDel(pattern, FC_SLANT);
2696 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2697 if(xloadfont(&dc.ifont, pattern))
2698 die("st: can't open font %s\n", fontstr);
2699
2700 FcPatternDel(pattern, FC_WEIGHT);
2701 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2702 if(xloadfont(&dc.ibfont, pattern))
2703 die("st: can't open font %s\n", fontstr);
2704
2705 FcPatternDel(pattern, FC_SLANT);
2706 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
2707 if(xloadfont(&dc.bfont, pattern))
2708 die("st: can't open font %s\n", fontstr);
2709
2710 FcPatternDestroy(pattern);
2711 }
2712
2713 void
2714 xunloadfonts(void) {
2715 int i, ip;
2716
2717 /*
2718 * Free the loaded fonts in the font cache. This is done backwards
2719 * from the frccur.
2720 */
2721 for(i = 0, ip = frccur; i < frclen; i++, ip--) {
2722 if(ip < 0)
2723 ip = LEN(frc) - 1;
2724 XftFontClose(xw.dpy, frc[ip].font);
2725 }
2726 frccur = -1;
2727 frclen = 0;
2728
2729 XftFontClose(xw.dpy, dc.font.match);
2730 FcPatternDestroy(dc.font.pattern);
2731 FcFontSetDestroy(dc.font.set);
2732 XftFontClose(xw.dpy, dc.bfont.match);
2733 FcPatternDestroy(dc.bfont.pattern);
2734 FcFontSetDestroy(dc.bfont.set);
2735 XftFontClose(xw.dpy, dc.ifont.match);
2736 FcPatternDestroy(dc.ifont.pattern);
2737 FcFontSetDestroy(dc.ifont.set);
2738 XftFontClose(xw.dpy, dc.ibfont.match);
2739 FcPatternDestroy(dc.ibfont.pattern);
2740 FcFontSetDestroy(dc.ibfont.set);
2741 }
2742
2743 void
2744 xzoom(const Arg *arg) {
2745 xunloadfonts();
2746 xloadfonts(usedfont, usedfontsize + arg->i);
2747 cresize(0, 0);
2748 redraw(0);
2749 }
2750
2751 void
2752 xinit(void) {
2753 XSetWindowAttributes attrs;
2754 XGCValues gcvalues;
2755 Cursor cursor;
2756 Window parent;
2757 int sw, sh;
2758
2759 if(!(xw.dpy = XOpenDisplay(NULL)))
2760 die("Can't open display\n");
2761 xw.scr = XDefaultScreen(xw.dpy);
2762 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2763
2764 /* font */
2765 if(!FcInit())
2766 die("Could not init fontconfig.\n");
2767
2768 usedfont = (opt_font == NULL)? font : opt_font;
2769 xloadfonts(usedfont, 0);
2770
2771 /* colors */
2772 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2773 xloadcols();
2774
2775 /* adjust fixed window geometry */
2776 if(xw.isfixed) {
2777 sw = DisplayWidth(xw.dpy, xw.scr);
2778 sh = DisplayHeight(xw.dpy, xw.scr);
2779 if(xw.fx < 0)
2780 xw.fx = sw + xw.fx - xw.fw - 1;
2781 if(xw.fy < 0)
2782 xw.fy = sh + xw.fy - xw.fh - 1;
2783
2784 xw.h = xw.fh;
2785 xw.w = xw.fw;
2786 } else {
2787 /* window - default size */
2788 xw.h = 2 * borderpx + term.row * xw.ch;
2789 xw.w = 2 * borderpx + term.col * xw.cw;
2790 xw.fx = 0;
2791 xw.fy = 0;
2792 }
2793
2794 /* Events */
2795 attrs.background_pixel = dc.col[defaultbg].pixel;
2796 attrs.border_pixel = dc.col[defaultbg].pixel;
2797 attrs.bit_gravity = NorthWestGravity;
2798 attrs.event_mask = FocusChangeMask | KeyPressMask
2799 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2800 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2801 attrs.colormap = xw.cmap;
2802
2803 parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
2804 XRootWindow(xw.dpy, xw.scr);
2805 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2806 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2807 xw.vis,
2808 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2809 | CWColormap,
2810 &attrs);
2811
2812 memset(&gcvalues, 0, sizeof(gcvalues));
2813 gcvalues.graphics_exposures = False;
2814 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
2815 &gcvalues);
2816 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2817 DefaultDepth(xw.dpy, xw.scr));
2818 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
2819 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
2820
2821 /* Xft rendering context */
2822 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2823
2824 /* input methods */
2825 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2826 XSetLocaleModifiers("@im=local");
2827 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2828 XSetLocaleModifiers("@im=");
2829 if((xw.xim = XOpenIM(xw.dpy,
2830 NULL, NULL, NULL)) == NULL) {
2831 die("XOpenIM failed. Could not open input"
2832 " device.\n");
2833 }
2834 }
2835 }
2836 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2837 | XIMStatusNothing, XNClientWindow, xw.win,
2838 XNFocusWindow, xw.win, NULL);
2839 if(xw.xic == NULL)
2840 die("XCreateIC failed. Could not obtain input method.\n");
2841
2842 /* white cursor, black outline */
2843 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2844 XDefineCursor(xw.dpy, xw.win, cursor);
2845 XRecolorCursor(xw.dpy, cursor,
2846 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2847 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2848
2849 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2850 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2851 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2852
2853 xresettitle();
2854 XMapWindow(xw.dpy, xw.win);
2855 xhints();
2856 XSync(xw.dpy, 0);
2857 }
2858
2859 void
2860 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2861 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2862 width = charlen * xw.cw, xp, i;
2863 int frp, frcflags;
2864 int u8fl, u8fblen, u8cblen, doesexist;
2865 char *u8c, *u8fs;
2866 long u8char;
2867 Font *font = &dc.font;
2868 FcResult fcres;
2869 FcPattern *fcpattern, *fontpattern;
2870 FcFontSet *fcsets[] = { NULL };
2871 FcCharSet *fccharset;
2872 Colour *fg, *bg, *temp, revfg, revbg;
2873 XRenderColor colfg, colbg;
2874 Rectangle r;
2875
2876 frcflags = FRC_NORMAL;
2877
2878 if(base.mode & ATTR_ITALIC) {
2879 if(base.fg == defaultfg)
2880 base.fg = defaultitalic;
2881 font = &dc.ifont;
2882 frcflags = FRC_ITALIC;
2883 } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
2884 if(base.fg == defaultfg)
2885 base.fg = defaultitalic;
2886 font = &dc.ibfont;
2887 frcflags = FRC_ITALICBOLD;
2888 } else if(base.mode & ATTR_UNDERLINE) {
2889 if(base.fg == defaultfg)
2890 base.fg = defaultunderline;
2891 }
2892 fg = &dc.col[base.fg];
2893 bg = &dc.col[base.bg];
2894
2895 if(base.mode & ATTR_BOLD) {
2896 if(BETWEEN(base.fg, 0, 7)) {
2897 /* basic system colors */
2898 fg = &dc.col[base.fg + 8];
2899 } else if(BETWEEN(base.fg, 16, 195)) {
2900 /* 256 colors */
2901 fg = &dc.col[base.fg + 36];
2902 } else if(BETWEEN(base.fg, 232, 251)) {
2903 /* greyscale */
2904 fg = &dc.col[base.fg + 4];
2905 }
2906 /*
2907 * Those ranges will not be brightened:
2908 * 8 - 15 – bright system colors
2909 * 196 - 231 – highest 256 color cube
2910 * 252 - 255 – brightest colors in greyscale
2911 */
2912 font = &dc.bfont;
2913 frcflags = FRC_BOLD;
2914 }
2915
2916 if(IS_SET(MODE_REVERSE)) {
2917 if(fg == &dc.col[defaultfg]) {
2918 fg = &dc.col[defaultbg];
2919 } else {
2920 colfg.red = ~fg->color.red;
2921 colfg.green = ~fg->color.green;
2922 colfg.blue = ~fg->color.blue;
2923 colfg.alpha = fg->color.alpha;
2924 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2925 fg = &revfg;
2926 }
2927
2928 if(bg == &dc.col[defaultbg]) {
2929 bg = &dc.col[defaultfg];
2930 } else {
2931 colbg.red = ~bg->color.red;
2932 colbg.green = ~bg->color.green;
2933 colbg.blue = ~bg->color.blue;
2934 colbg.alpha = bg->color.alpha;
2935 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2936 bg = &revbg;
2937 }
2938 }
2939
2940 if(base.mode & ATTR_REVERSE) {
2941 temp = fg;
2942 fg = bg;
2943 bg = temp;
2944 }
2945
2946 if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
2947 fg = bg;
2948
2949 /* Intelligent cleaning up of the borders. */
2950 if(x == 0) {
2951 xclear(0, (y == 0)? 0 : winy, borderpx,
2952 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
2953 }
2954 if(x + charlen >= term.col) {
2955 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2956 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
2957 }
2958 if(y == 0)
2959 xclear(winx, 0, winx + width, borderpx);
2960 if(y == term.row-1)
2961 xclear(winx, winy + xw.ch, winx + width, xw.h);
2962
2963 /* Clean up the region we want to draw to. */
2964 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
2965
2966 /* Set the clip region because Xft is sometimes dirty. */
2967 r.x = 0;
2968 r.y = 0;
2969 r.height = xw.ch;
2970 r.width = width;
2971 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
2972
2973 fcsets[0] = font->set;
2974 for(xp = winx; bytelen > 0;) {
2975 /*
2976 * Search for the range in the to be printed string of glyphs
2977 * that are in the main font. Then print that range. If
2978 * some glyph is found that is not in the font, do the
2979 * fallback dance.
2980 */
2981 u8fs = s;
2982 u8fblen = 0;
2983 u8fl = 0;
2984 for(;;) {
2985 u8c = s;
2986 u8cblen = utf8decode(s, &u8char);
2987 s += u8cblen;
2988 bytelen -= u8cblen;
2989
2990 doesexist = XftCharIndex(xw.dpy, font->match, u8char);
2991 if(!doesexist || bytelen <= 0) {
2992 if(bytelen <= 0) {
2993 if(doesexist) {
2994 u8fl++;
2995 u8fblen += u8cblen;
2996 }
2997 }
2998
2999 if(u8fl > 0) {
3000 XftDrawStringUtf8(xw.draw, fg,
3001 font->match, xp,
3002 winy + font->ascent,
3003 (FcChar8 *)u8fs,
3004 u8fblen);
3005 xp += font->width * u8fl;
3006
3007 }
3008 break;
3009 }
3010
3011 u8fl++;
3012 u8fblen += u8cblen;
3013 }
3014 if(doesexist)
3015 break;
3016
3017 frp = frccur;
3018 /* Search the font cache. */
3019 for(i = 0; i < frclen; i++, frp--) {
3020 if(frp <= 0)
3021 frp = LEN(frc) - 1;
3022
3023 if(frc[frp].c == u8char
3024 && frc[frp].flags == frcflags) {
3025 break;
3026 }
3027 }
3028
3029 /* Nothing was found. */
3030 if(i >= frclen) {
3031 /*
3032 * Nothing was found in the cache. Now use
3033 * some dozen of Fontconfig calls to get the
3034 * font for one single character.
3035 */
3036 fcpattern = FcPatternDuplicate(font->pattern);
3037 fccharset = FcCharSetCreate();
3038
3039 FcCharSetAddChar(fccharset, u8char);
3040 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3041 fccharset);
3042 FcPatternAddBool(fcpattern, FC_SCALABLE,
3043 FcTrue);
3044
3045 FcConfigSubstitute(0, fcpattern,
3046 FcMatchPattern);
3047 FcDefaultSubstitute(fcpattern);
3048
3049 fontpattern = FcFontSetMatch(0, fcsets,
3050 FcTrue, fcpattern, &fcres);
3051
3052 /*
3053 * Overwrite or create the new cache entry.
3054 */
3055 frccur++;
3056 frclen++;
3057 if(frccur >= LEN(frc))
3058 frccur = 0;
3059 if(frclen > LEN(frc)) {
3060 frclen = LEN(frc);
3061 XftFontClose(xw.dpy, frc[frccur].font);
3062 }
3063
3064 frc[frccur].font = XftFontOpenPattern(xw.dpy,
3065 fontpattern);
3066 frc[frccur].c = u8char;
3067 frc[frccur].flags = frcflags;
3068
3069 FcPatternDestroy(fcpattern);
3070 FcCharSetDestroy(fccharset);
3071
3072 frp = frccur;
3073 }
3074
3075 XftDrawStringUtf8(xw.draw, fg, frc[frp].font,
3076 xp, winy + frc[frp].font->ascent,
3077 (FcChar8 *)u8c, u8cblen);
3078
3079 xp += font->width;
3080 }
3081
3082 /*
3083 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
3084 winy + font->ascent, (FcChar8 *)s, bytelen);
3085 */
3086
3087 if(base.mode & ATTR_UNDERLINE) {
3088 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
3089 width, 1);
3090 }
3091
3092 /* Reset clip to none. */
3093 XftDrawSetClip(xw.draw, 0);
3094 }
3095
3096 void
3097 xdrawcursor(void) {
3098 static int oldx = 0, oldy = 0;
3099 int sl;
3100 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
3101
3102 LIMIT(oldx, 0, term.col-1);
3103 LIMIT(oldy, 0, term.row-1);
3104
3105 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
3106
3107 /* remove the old cursor */
3108 sl = utf8size(term.line[oldy][oldx].c);
3109 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
3110 oldy, 1, sl);
3111
3112 /* draw the new one */
3113 if(!(IS_SET(MODE_HIDE))) {
3114 if(xw.state & WIN_FOCUSED) {
3115 if(IS_SET(MODE_REVERSE)) {
3116 g.mode |= ATTR_REVERSE;
3117 g.fg = defaultcs;
3118 g.bg = defaultfg;
3119 }
3120
3121 sl = utf8size(g.c);
3122 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
3123 } else {
3124 XftDrawRect(xw.draw, &dc.col[defaultcs],
3125 borderpx + term.c.x * xw.cw,
3126 borderpx + term.c.y * xw.ch,
3127 xw.cw - 1, 1);
3128 XftDrawRect(xw.draw, &dc.col[defaultcs],
3129 borderpx + term.c.x * xw.cw,
3130 borderpx + term.c.y * xw.ch,
3131 1, xw.ch - 1);
3132 XftDrawRect(xw.draw, &dc.col[defaultcs],
3133 borderpx + (term.c.x + 1) * xw.cw - 1,
3134 borderpx + term.c.y * xw.ch,
3135 1, xw.ch - 1);
3136 XftDrawRect(xw.draw, &dc.col[defaultcs],
3137 borderpx + term.c.x * xw.cw,
3138 borderpx + (term.c.y + 1) * xw.ch - 1,
3139 xw.cw, 1);
3140 }
3141 oldx = term.c.x, oldy = term.c.y;
3142 }
3143 }
3144
3145
3146 void
3147 xsettitle(char *p) {
3148 XTextProperty prop;
3149
3150 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3151 &prop);
3152 XSetWMName(xw.dpy, xw.win, &prop);
3153 }
3154
3155 void
3156 xresettitle(void) {
3157 xsettitle(opt_title ? opt_title : "st");
3158 }
3159
3160 void
3161 redraw(int timeout) {
3162 struct timespec tv = {0, timeout * 1000};
3163
3164 tfulldirt();
3165 draw();
3166
3167 if(timeout > 0) {
3168 nanosleep(&tv, NULL);
3169 XSync(xw.dpy, False); /* necessary for a good tput flash */
3170 }
3171 }
3172
3173 void
3174 draw(void) {
3175 drawregion(0, 0, term.col, term.row);
3176 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3177 xw.h, 0, 0);
3178 XSetForeground(xw.dpy, dc.gc,
3179 dc.col[IS_SET(MODE_REVERSE)?
3180 defaultfg : defaultbg].pixel);
3181 }
3182
3183 void
3184 drawregion(int x1, int y1, int x2, int y2) {
3185 int ic, ib, x, y, ox, sl;
3186 Glyph base, new;
3187 char buf[DRAW_BUF_SIZ];
3188 bool ena_sel = sel.bx != -1;
3189
3190 if(sel.alt ^ IS_SET(MODE_ALTSCREEN))
3191 ena_sel = 0;
3192
3193 if(!(xw.state & WIN_VISIBLE))
3194 return;
3195
3196 for(y = y1; y < y2; y++) {
3197 if(!term.dirty[y])
3198 continue;
3199
3200 xtermclear(0, y, term.col, y);
3201 term.dirty[y] = 0;
3202 base = term.line[y][0];
3203 ic = ib = ox = 0;
3204 for(x = x1; x < x2; x++) {
3205 new = term.line[y][x];
3206 if(ena_sel && selected(x, y))
3207 new.mode ^= ATTR_REVERSE;
3208 if(ib > 0 && (ATTRCMP(base, new)
3209 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
3210 xdraws(buf, base, ox, y, ic, ib);
3211 ic = ib = 0;
3212 }
3213 if(ib == 0) {
3214 ox = x;
3215 base = new;
3216 }
3217
3218 sl = utf8size(new.c);
3219 memcpy(buf+ib, new.c, sl);
3220 ib += sl;
3221 ++ic;
3222 }
3223 if(ib > 0)
3224 xdraws(buf, base, ox, y, ic, ib);
3225 }
3226 xdrawcursor();
3227 }
3228
3229 void
3230 expose(XEvent *ev) {
3231 XExposeEvent *e = &ev->xexpose;
3232
3233 if(xw.state & WIN_REDRAW) {
3234 if(!e->count)
3235 xw.state &= ~WIN_REDRAW;
3236 }
3237 redraw(0);
3238 }
3239
3240 void
3241 visibility(XEvent *ev) {
3242 XVisibilityEvent *e = &ev->xvisibility;
3243
3244 if(e->state == VisibilityFullyObscured) {
3245 xw.state &= ~WIN_VISIBLE;
3246 } else if(!(xw.state & WIN_VISIBLE)) {
3247 /* need a full redraw for next Expose, not just a buf copy */
3248 xw.state |= WIN_VISIBLE | WIN_REDRAW;
3249 }
3250 }
3251
3252 void
3253 unmap(XEvent *ev) {
3254 xw.state &= ~WIN_VISIBLE;
3255 }
3256
3257 void
3258 xseturgency(int add) {
3259 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3260
3261 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
3262 XSetWMHints(xw.dpy, xw.win, h);
3263 XFree(h);
3264 }
3265
3266 void
3267 focus(XEvent *ev) {
3268 XFocusChangeEvent *e = &ev->xfocus;
3269
3270 if(e->mode == NotifyGrab)
3271 return;
3272
3273 if(ev->type == FocusIn) {
3274 XSetICFocus(xw.xic);
3275 xw.state |= WIN_FOCUSED;
3276 xseturgency(0);
3277 } else {
3278 XUnsetICFocus(xw.xic);
3279 xw.state &= ~WIN_FOCUSED;
3280 }
3281 }
3282
3283 inline bool
3284 match(uint mask, uint state) {
3285 state &= ~(ignoremod);
3286
3287 if(mask == XK_NO_MOD && state)
3288 return false;
3289 if(mask != XK_ANY_MOD && mask != XK_NO_MOD && !state)
3290 return false;
3291 if((state & mask) != state)
3292 return false;
3293 return true;
3294 }
3295
3296 void
3297 numlock(const Arg *dummy) {
3298 term.numlock ^= 1;
3299 }
3300
3301 char*
3302 kmap(KeySym k, uint state) {
3303 uint mask;
3304 Key *kp;
3305 int i;
3306
3307 /* Check for mapped keys out of X11 function keys. */
3308 for(i = 0; i < LEN(mappedkeys); i++) {
3309 if(mappedkeys[i] == k)
3310 break;
3311 }
3312 if(i == LEN(mappedkeys)) {
3313 if((k & 0xFFFF) < 0xFD00)
3314 return NULL;
3315 }
3316
3317 for(kp = key; kp < key + LEN(key); kp++) {
3318 mask = kp->mask;
3319
3320 if(kp->k != k)
3321 continue;
3322
3323 if(!match(mask, state))
3324 continue;
3325
3326 if(kp->appkey > 0) {
3327 if(!IS_SET(MODE_APPKEYPAD))
3328 continue;
3329 if(term.numlock && kp->appkey == 2)
3330 continue;
3331 } else if(kp->appkey < 0 && IS_SET(MODE_APPKEYPAD)) {
3332 continue;
3333 }
3334
3335 if((kp->appcursor < 0 && IS_SET(MODE_APPCURSOR)) ||
3336 (kp->appcursor > 0
3337 && !IS_SET(MODE_APPCURSOR))) {
3338 continue;
3339 }
3340
3341 if((kp->crlf < 0 && IS_SET(MODE_CRLF)) ||
3342 (kp->crlf > 0 && !IS_SET(MODE_CRLF))) {
3343 continue;
3344 }
3345
3346 return kp->s;
3347 }
3348
3349 return NULL;
3350 }
3351
3352 void
3353 kpress(XEvent *ev) {
3354 XKeyEvent *e = &ev->xkey;
3355 KeySym ksym;
3356 char xstr[31], buf[32], *customkey, *cp = buf;
3357 int len, ret;
3358 long c;
3359 Status status;
3360 Shortcut *bp;
3361
3362 if(IS_SET(MODE_KBDLOCK))
3363 return;
3364
3365 len = XmbLookupString(xw.xic, e, xstr, sizeof(xstr), &ksym, &status);
3366 e->state &= ~Mod2Mask;
3367 /* 1. shortcuts */
3368 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3369 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3370 bp->func(&(bp->arg));
3371 return;
3372 }
3373 }
3374
3375 /* 2. custom keys from config.h */
3376 if((customkey = kmap(ksym, e->state))) {
3377 len = strlen(customkey);
3378 memcpy(buf, customkey, len);
3379 /* 3. hardcoded (overrides X lookup) */
3380 } else {
3381 if(len == 0)
3382 return;
3383
3384 if(len == 1 && e->state & Mod1Mask) {
3385 if(IS_SET(MODE_8BIT)) {
3386 if(*xstr < 0177) {
3387 c = *xstr | B7;
3388 ret = utf8encode(&c, cp);
3389 cp += ret;
3390 len = 0;
3391 }
3392 } else {
3393 *cp++ = '\033';
3394 }
3395 }
3396
3397 memcpy(cp, xstr, len);
3398 len = cp - buf + len;
3399 }
3400
3401 ttywrite(buf, len);
3402 if(IS_SET(MODE_ECHO))
3403 techo(buf, len);
3404 }
3405
3406
3407 void
3408 cmessage(XEvent *e) {
3409 /*
3410 * See xembed specs
3411 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3412 */
3413 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3414 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3415 xw.state |= WIN_FOCUSED;
3416 xseturgency(0);
3417 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3418 xw.state &= ~WIN_FOCUSED;
3419 }
3420 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3421 /* Send SIGHUP to shell */
3422 kill(pid, SIGHUP);
3423 exit(EXIT_SUCCESS);
3424 }
3425 }
3426
3427 void
3428 cresize(int width, int height) {
3429 int col, row;
3430
3431 if(width != 0)
3432 xw.w = width;
3433 if(height != 0)
3434 xw.h = height;
3435
3436 col = (xw.w - 2 * borderpx) / xw.cw;
3437 row = (xw.h - 2 * borderpx) / xw.ch;
3438
3439 tresize(col, row);
3440 xresize(col, row);
3441 ttyresize();
3442 }
3443
3444 void
3445 resize(XEvent *e) {
3446 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3447 return;
3448
3449 cresize(e->xconfigure.width, e->xconfigure.height);
3450 }
3451
3452 void
3453 run(void) {
3454 XEvent ev;
3455 fd_set rfd;
3456 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
3457 struct timeval drawtimeout, *tv = NULL, now, last, lastblink;
3458
3459 gettimeofday(&lastblink, NULL);
3460 gettimeofday(&last, NULL);
3461
3462 for(xev = actionfps;;) {
3463 FD_ZERO(&rfd);
3464 FD_SET(cmdfd, &rfd);
3465 FD_SET(xfd, &rfd);
3466
3467 switch(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
3468 case -1:
3469 if(errno == EINTR)
3470 continue;
3471 die("select failed: %s\n", SERRNO);
3472 default:
3473 if(FD_ISSET(cmdfd, &rfd)) {
3474 ttyread();
3475 if(blinktimeout) {
3476 blinkset = tattrset(ATTR_BLINK);
3477 if(!blinkset && term.mode & ATTR_BLINK)
3478 term.mode &= ~(MODE_BLINK);
3479 }
3480 }
3481
3482 if(FD_ISSET(xfd, &rfd))
3483 xev = actionfps;
3484 break;
3485 }
3486 gettimeofday(&now, NULL);
3487 drawtimeout.tv_sec = 0;
3488 drawtimeout.tv_usec = (1000/xfps) * 1000;
3489 tv = &drawtimeout;
3490
3491 dodraw = 0;
3492 if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
3493 tsetdirtattr(ATTR_BLINK);
3494 term.mode ^= MODE_BLINK;
3495 gettimeofday(&lastblink, NULL);
3496 dodraw = 1;
3497 }
3498 if(TIMEDIFF(now, last) \
3499 > (xev? (1000/xfps) : (1000/actionfps))) {
3500 dodraw = 1;
3501 last = now;
3502 }
3503
3504 if(dodraw) {
3505 while(XPending(xw.dpy)) {
3506 XNextEvent(xw.dpy, &ev);
3507 if(XFilterEvent(&ev, None))
3508 continue;
3509 if(handler[ev.type])
3510 (handler[ev.type])(&ev);
3511 }
3512
3513 draw();
3514 XFlush(xw.dpy);
3515
3516 if(xev && !FD_ISSET(xfd, &rfd))
3517 xev--;
3518 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
3519 if(blinkset) {
3520 if(TIMEDIFF(now, lastblink) \
3521 > blinktimeout) {
3522 drawtimeout.tv_usec = 1;
3523 } else {
3524 drawtimeout.tv_usec = (1000 * \
3525 (blinktimeout - \
3526 TIMEDIFF(now,
3527 lastblink)));
3528 }
3529 } else {
3530 tv = NULL;
3531 }
3532 }
3533 }
3534 }
3535 }
3536
3537 void
3538 usage(void) {
3539 die("%s " VERSION " (c) 2010-2013 st engineers\n" \
3540 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
3541 " [-t title] [-w windowid] [-e command ...]\n", argv0);
3542 }
3543
3544 int
3545 main(int argc, char *argv[]) {
3546 int bitm, xr, yr;
3547 uint wr, hr;
3548
3549 xw.fw = xw.fh = xw.fx = xw.fy = 0;
3550 xw.isfixed = False;
3551
3552 ARGBEGIN {
3553 case 'a':
3554 allowaltscreen = false;
3555 break;
3556 case 'c':
3557 opt_class = EARGF(usage());
3558 break;
3559 case 'e':
3560 /* eat all remaining arguments */
3561 if(argc > 1)
3562 opt_cmd = &argv[1];
3563 goto run;
3564 case 'f':
3565 opt_font = EARGF(usage());
3566 break;
3567 case 'g':
3568 bitm = XParseGeometry(EARGF(usage()), &xr, &yr, &wr, &hr);
3569 if(bitm & XValue)
3570 xw.fx = xr;
3571 if(bitm & YValue)
3572 xw.fy = yr;
3573 if(bitm & WidthValue)
3574 xw.fw = (int)wr;
3575 if(bitm & HeightValue)
3576 xw.fh = (int)hr;
3577 if(bitm & XNegative && xw.fx == 0)
3578 xw.fx = -1;
3579 if(bitm & XNegative && xw.fy == 0)
3580 xw.fy = -1;
3581
3582 if(xw.fh != 0 && xw.fw != 0)
3583 xw.isfixed = True;
3584 break;
3585 case 'o':
3586 opt_io = EARGF(usage());
3587 break;
3588 case 't':
3589 opt_title = EARGF(usage());
3590 break;
3591 case 'w':
3592 opt_embed = EARGF(usage());
3593 break;
3594 case 'v':
3595 default:
3596 usage();
3597 } ARGEND;
3598
3599 run:
3600 setlocale(LC_CTYPE, "");
3601 XSetLocaleModifiers("");
3602 tnew(80, 24);
3603 xinit();
3604 ttynew();
3605 selinit();
3606 if(xw.isfixed)
3607 cresize(xw.h, xw.w);
3608 run();
3609
3610 return 0;
3611 }
3612