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c043e3fc544171a52bfb6082ed90323010130d3c
[st.git] / st.c
1 /* See LICENSE for licence details. */
2 #define _XOPEN_SOURCE 600
3 #include <ctype.h>
4 #include <errno.h>
5 #include <fcntl.h>
6 #include <limits.h>
7 #include <locale.h>
8 #include <pwd.h>
9 #include <stdarg.h>
10 #include <stdbool.h>
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <signal.h>
15 #include <sys/ioctl.h>
16 #include <sys/select.h>
17 #include <sys/stat.h>
18 #include <sys/time.h>
19 #include <sys/types.h>
20 #include <sys/wait.h>
21 #include <time.h>
22 #include <unistd.h>
23 #include <X11/Xatom.h>
24 #include <X11/Xlib.h>
25 #include <X11/Xutil.h>
26 #include <X11/cursorfont.h>
27 #include <X11/keysym.h>
28 #include <X11/extensions/Xdbe.h>
29 #include <X11/Xft/Xft.h>
30 #include <fontconfig/fontconfig.h>
31
32 #define Glyph Glyph_
33 #define Font Font_
34 #define Draw XftDraw *
35 #define Colour XftColor
36 #define Colourmap Colormap
37
38 #if defined(__linux)
39 #include <pty.h>
40 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
41 #include <util.h>
42 #elif defined(__FreeBSD__) || defined(__DragonFly__)
43 #include <libutil.h>
44 #endif
45
46 #define USAGE \
47 "st " VERSION " (c) 2010-2012 st engineers\n" \
48 "usage: st [-v] [-c class] [-f font] [-g geometry] [-o file]" \
49 " [-t title] [-w windowid] [-e command ...]\n"
50
51 /* XEMBED messages */
52 #define XEMBED_FOCUS_IN 4
53 #define XEMBED_FOCUS_OUT 5
54
55 /* Arbitrary sizes */
56 #define ESC_BUF_SIZ 256
57 #define ESC_ARG_SIZ 16
58 #define STR_BUF_SIZ 256
59 #define STR_ARG_SIZ 16
60 #define DRAW_BUF_SIZ 20*1024
61 #define UTF_SIZ 4
62 #define XK_NO_MOD UINT_MAX
63 #define XK_ANY_MOD 0
64
65 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
66
67 /* macros */
68 #define CLEANMASK(mask) (mask & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
69 #define SERRNO strerror(errno)
70 #define MIN(a, b) ((a) < (b) ? (a) : (b))
71 #define MAX(a, b) ((a) < (b) ? (b) : (a))
72 #define LEN(a) (sizeof(a) / sizeof(a[0]))
73 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
74 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
75 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
76 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
77 #define IS_SET(flag) (term.mode & (flag))
78 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
79
80 #define VT102ID "\033[?6c"
81
82 enum glyph_attribute {
83 ATTR_NULL = 0,
84 ATTR_REVERSE = 1,
85 ATTR_UNDERLINE = 2,
86 ATTR_BOLD = 4,
87 ATTR_GFX = 8,
88 ATTR_ITALIC = 16,
89 ATTR_BLINK = 32,
90 };
91
92 enum cursor_movement {
93 CURSOR_UP,
94 CURSOR_DOWN,
95 CURSOR_LEFT,
96 CURSOR_RIGHT,
97 CURSOR_SAVE,
98 CURSOR_LOAD
99 };
100
101 enum cursor_state {
102 CURSOR_DEFAULT = 0,
103 CURSOR_WRAPNEXT = 1,
104 CURSOR_ORIGIN = 2
105 };
106
107 enum glyph_state {
108 GLYPH_SET = 1,
109 GLYPH_DIRTY = 2
110 };
111
112 enum term_mode {
113 MODE_WRAP = 1,
114 MODE_INSERT = 2,
115 MODE_APPKEYPAD = 4,
116 MODE_ALTSCREEN = 8,
117 MODE_CRLF = 16,
118 MODE_MOUSEBTN = 32,
119 MODE_MOUSEMOTION = 64,
120 MODE_MOUSE = 32|64,
121 MODE_REVERSE = 128,
122 MODE_KBDLOCK = 256,
123 MODE_HIDE = 512
124 };
125
126 enum escape_state {
127 ESC_START = 1,
128 ESC_CSI = 2,
129 ESC_STR = 4, /* DSC, OSC, PM, APC */
130 ESC_ALTCHARSET = 8,
131 ESC_STR_END = 16, /* a final string was encountered */
132 ESC_TEST = 32, /* Enter in test mode */
133 };
134
135 enum window_state {
136 WIN_VISIBLE = 1,
137 WIN_REDRAW = 2,
138 WIN_FOCUSED = 4
139 };
140
141 /* bit macro */
142 #undef B0
143 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
144
145 typedef unsigned char uchar;
146 typedef unsigned int uint;
147 typedef unsigned long ulong;
148 typedef unsigned short ushort;
149
150 typedef struct {
151 char c[UTF_SIZ]; /* character code */
152 uchar mode; /* attribute flags */
153 ushort fg; /* foreground */
154 ushort bg; /* background */
155 uchar state; /* state flags */
156 } Glyph;
157
158 typedef Glyph* Line;
159
160 typedef struct {
161 Glyph attr; /* current char attributes */
162 int x;
163 int y;
164 char state;
165 } TCursor;
166
167 /* CSI Escape sequence structs */
168 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
169 typedef struct {
170 char buf[ESC_BUF_SIZ]; /* raw string */
171 int len; /* raw string length */
172 char priv;
173 int arg[ESC_ARG_SIZ];
174 int narg; /* nb of args */
175 char mode;
176 } CSIEscape;
177
178 /* STR Escape sequence structs */
179 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
180 typedef struct {
181 char type; /* ESC type ... */
182 char buf[STR_BUF_SIZ]; /* raw string */
183 int len; /* raw string length */
184 char *args[STR_ARG_SIZ];
185 int narg; /* nb of args */
186 } STREscape;
187
188 /* Internal representation of the screen */
189 typedef struct {
190 int row; /* nb row */
191 int col; /* nb col */
192 Line *line; /* screen */
193 Line *alt; /* alternate screen */
194 bool *dirty; /* dirtyness of lines */
195 TCursor c; /* cursor */
196 int top; /* top scroll limit */
197 int bot; /* bottom scroll limit */
198 int mode; /* terminal mode flags */
199 int esc; /* escape state flags */
200 bool *tabs;
201 } Term;
202
203 /* Purely graphic info */
204 typedef struct {
205 Display *dpy;
206 Colourmap cmap;
207 Window win;
208 XdbeBackBuffer buf;
209 Atom xembed, wmdeletewin;
210 XIM xim;
211 XIC xic;
212 Draw draw;
213 Visual *vis;
214 int scr;
215 bool isfixed; /* is fixed geometry? */
216 int fx, fy, fw, fh; /* fixed geometry */
217 int tw, th; /* tty width and height */
218 int w; /* window width */
219 int h; /* window height */
220 int ch; /* char height */
221 int cw; /* char width */
222 char state; /* focus, redraw, visible */
223 } XWindow;
224
225 typedef struct {
226 KeySym k;
227 uint mask;
228 char s[ESC_BUF_SIZ];
229 } Key;
230
231 /* TODO: use better name for vars... */
232 typedef struct {
233 int mode;
234 int bx, by;
235 int ex, ey;
236 struct {
237 int x, y;
238 } b, e;
239 char *clip;
240 Atom xtarget;
241 bool alt;
242 struct timeval tclick1;
243 struct timeval tclick2;
244 } Selection;
245
246 typedef union {
247 int i;
248 unsigned int ui;
249 float f;
250 const void *v;
251 } Arg;
252
253 typedef struct {
254 unsigned int mod;
255 KeySym keysym;
256 void (*func)(const Arg *);
257 const Arg arg;
258 } Shortcut;
259
260 /* function definitions used in config.h */
261 static void xzoom(const Arg *);
262
263 /* Config.h for applying patches and the configuration. */
264 #include "config.h"
265
266 /* Font structure */
267 typedef struct {
268 int height;
269 int width;
270 int ascent;
271 int descent;
272 short lbearing;
273 short rbearing;
274 XftFont *set;
275 } Font;
276
277 /* Drawing Context */
278 typedef struct {
279 Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
280 GC gc;
281 Font font, bfont, ifont, ibfont;
282 } DC;
283
284 static void die(const char *, ...);
285 static void draw(void);
286 static void redraw(void);
287 static void drawregion(int, int, int, int);
288 static void execsh(void);
289 static void sigchld(int);
290 static void run(void);
291
292 static void csidump(void);
293 static void csihandle(void);
294 static void csiparse(void);
295 static void csireset(void);
296 static void strdump(void);
297 static void strhandle(void);
298 static void strparse(void);
299 static void strreset(void);
300
301 static void tclearregion(int, int, int, int);
302 static void tcursor(int);
303 static void tdeletechar(int);
304 static void tdeleteline(int);
305 static void tinsertblank(int);
306 static void tinsertblankline(int);
307 static void tmoveto(int, int);
308 static void tmoveato(int x, int y);
309 static void tnew(int, int);
310 static void tnewline(int);
311 static void tputtab(bool);
312 static void tputc(char *, int);
313 static void treset(void);
314 static int tresize(int, int);
315 static void tscrollup(int, int);
316 static void tscrolldown(int, int);
317 static void tsetattr(int*, int);
318 static void tsetchar(char *, Glyph *, int, int);
319 static void tsetscroll(int, int);
320 static void tswapscreen(void);
321 static void tsetdirt(int, int);
322 static void tsetmode(bool, bool, int *, int);
323 static void tfulldirt(void);
324
325 static void ttynew(void);
326 static void ttyread(void);
327 static void ttyresize(void);
328 static void ttywrite(const char *, size_t);
329
330 static void xdraws(char *, Glyph, int, int, int, int);
331 static void xhints(void);
332 static void xclear(int, int, int, int);
333 static void xdrawcursor(void);
334 static void xinit(void);
335 static void xloadcols(void);
336 static void xresettitle(void);
337 static void xseturgency(int);
338 static void xsetsel(char*);
339 static void xtermclear(int, int, int, int);
340 static void xresize(int, int);
341
342 static void expose(XEvent *);
343 static void visibility(XEvent *);
344 static void unmap(XEvent *);
345 static char *kmap(KeySym, uint);
346 static void kpress(XEvent *);
347 static void cmessage(XEvent *);
348 static void cresize(int width, int height);
349 static void resize(XEvent *);
350 static void focus(XEvent *);
351 static void brelease(XEvent *);
352 static void bpress(XEvent *);
353 static void bmotion(XEvent *);
354 static void selnotify(XEvent *);
355 static void selclear(XEvent *);
356 static void selrequest(XEvent *);
357
358 static void selinit(void);
359 static inline bool selected(int, int);
360 static void selcopy(void);
361 static void selpaste(void);
362 static void selscroll(int, int);
363
364 static int utf8decode(char *, long *);
365 static int utf8encode(long *, char *);
366 static int utf8size(char *);
367 static int isfullutf8(char *, int);
368
369 static ssize_t xwrite(int, char *, size_t);
370 static void *xmalloc(size_t);
371 static void *xrealloc(void *, size_t);
372 static void *xcalloc(size_t nmemb, size_t size);
373
374 static void (*handler[LASTEvent])(XEvent *) = {
375 [KeyPress] = kpress,
376 [ClientMessage] = cmessage,
377 [ConfigureNotify] = resize,
378 [VisibilityNotify] = visibility,
379 [UnmapNotify] = unmap,
380 [Expose] = expose,
381 [FocusIn] = focus,
382 [FocusOut] = focus,
383 [MotionNotify] = bmotion,
384 [ButtonPress] = bpress,
385 [ButtonRelease] = brelease,
386 [SelectionClear] = selclear,
387 [SelectionNotify] = selnotify,
388 [SelectionRequest] = selrequest,
389 };
390
391 /* Globals */
392 static DC dc;
393 static XWindow xw;
394 static Term term;
395 static CSIEscape csiescseq;
396 static STREscape strescseq;
397 static int cmdfd;
398 static pid_t pid;
399 static Selection sel;
400 static int iofd = -1;
401 static char **opt_cmd = NULL;
402 static char *opt_io = NULL;
403 static char *opt_title = NULL;
404 static char *opt_embed = NULL;
405 static char *opt_class = NULL;
406 static char *opt_font = NULL;
407
408 static char *usedfont = NULL;
409 static int usedfontsize = 0;
410
411 ssize_t
412 xwrite(int fd, char *s, size_t len) {
413 size_t aux = len;
414
415 while(len > 0) {
416 ssize_t r = write(fd, s, len);
417 if(r < 0)
418 return r;
419 len -= r;
420 s += r;
421 }
422 return aux;
423 }
424
425 void *
426 xmalloc(size_t len) {
427 void *p = malloc(len);
428
429 if(!p)
430 die("Out of memory\n");
431
432 return p;
433 }
434
435 void *
436 xrealloc(void *p, size_t len) {
437 if((p = realloc(p, len)) == NULL)
438 die("Out of memory\n");
439
440 return p;
441 }
442
443 void *
444 xcalloc(size_t nmemb, size_t size) {
445 void *p = calloc(nmemb, size);
446
447 if(!p)
448 die("Out of memory\n");
449
450 return p;
451 }
452
453 int
454 utf8decode(char *s, long *u) {
455 uchar c;
456 int i, n, rtn;
457
458 rtn = 1;
459 c = *s;
460 if(~c & B7) { /* 0xxxxxxx */
461 *u = c;
462 return rtn;
463 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
464 *u = c&(B4|B3|B2|B1|B0);
465 n = 1;
466 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
467 *u = c&(B3|B2|B1|B0);
468 n = 2;
469 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
470 *u = c & (B2|B1|B0);
471 n = 3;
472 } else {
473 goto invalid;
474 }
475
476 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
477 c = *s;
478 if((c & (B7|B6)) != B7) /* 10xxxxxx */
479 goto invalid;
480 *u <<= 6;
481 *u |= c & (B5|B4|B3|B2|B1|B0);
482 }
483
484 if((n == 1 && *u < 0x80) ||
485 (n == 2 && *u < 0x800) ||
486 (n == 3 && *u < 0x10000) ||
487 (*u >= 0xD800 && *u <= 0xDFFF)) {
488 goto invalid;
489 }
490
491 return rtn;
492 invalid:
493 *u = 0xFFFD;
494
495 return rtn;
496 }
497
498 int
499 utf8encode(long *u, char *s) {
500 uchar *sp;
501 ulong uc;
502 int i, n;
503
504 sp = (uchar *)s;
505 uc = *u;
506 if(uc < 0x80) {
507 *sp = uc; /* 0xxxxxxx */
508 return 1;
509 } else if(*u < 0x800) {
510 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
511 n = 1;
512 } else if(uc < 0x10000) {
513 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
514 n = 2;
515 } else if(uc <= 0x10FFFF) {
516 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
517 n = 3;
518 } else {
519 goto invalid;
520 }
521
522 for(i=n,++sp; i>0; --i,++sp)
523 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
524
525 return n+1;
526 invalid:
527 /* U+FFFD */
528 *s++ = '\xEF';
529 *s++ = '\xBF';
530 *s = '\xBD';
531
532 return 3;
533 }
534
535 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
536 UTF-8 otherwise return 0 */
537 int
538 isfullutf8(char *s, int b) {
539 uchar *c1, *c2, *c3;
540
541 c1 = (uchar *)s;
542 c2 = (uchar *)++s;
543 c3 = (uchar *)++s;
544 if(b < 1) {
545 return 0;
546 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
547 return 0;
548 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
549 ((b == 1) ||
550 ((b == 2) && (*c2&(B7|B6)) == B7))) {
551 return 0;
552 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
553 ((b == 1) ||
554 ((b == 2) && (*c2&(B7|B6)) == B7) ||
555 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
556 return 0;
557 } else {
558 return 1;
559 }
560 }
561
562 int
563 utf8size(char *s) {
564 uchar c = *s;
565
566 if(~c&B7) {
567 return 1;
568 } else if((c&(B7|B6|B5)) == (B7|B6)) {
569 return 2;
570 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
571 return 3;
572 } else {
573 return 4;
574 }
575 }
576
577 void
578 selinit(void) {
579 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
580 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
581 sel.mode = 0;
582 sel.bx = -1;
583 sel.clip = NULL;
584 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
585 if(sel.xtarget == None)
586 sel.xtarget = XA_STRING;
587 }
588
589 static int
590 x2col(int x) {
591 x -= borderpx;
592 x /= xw.cw;
593
594 return LIMIT(x, 0, term.col-1);
595 }
596
597 static int
598 y2row(int y) {
599 y -= borderpx;
600 y /= xw.ch;
601
602 return LIMIT(y, 0, term.row-1);
603 }
604
605 static inline bool
606 selected(int x, int y) {
607 int bx, ex;
608
609 if(sel.ey == y && sel.by == y) {
610 bx = MIN(sel.bx, sel.ex);
611 ex = MAX(sel.bx, sel.ex);
612 return BETWEEN(x, bx, ex);
613 }
614
615 return ((sel.b.y < y && y < sel.e.y)
616 || (y == sel.e.y && x <= sel.e.x))
617 || (y == sel.b.y && x >= sel.b.x
618 && (x <= sel.e.x || sel.b.y != sel.e.y));
619 }
620
621 void
622 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
623 if(b)
624 *b = e->xbutton.button;
625
626 *x = x2col(e->xbutton.x);
627 *y = y2row(e->xbutton.y);
628
629 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
630 sel.b.y = MIN(sel.by, sel.ey);
631 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
632 sel.e.y = MAX(sel.by, sel.ey);
633 }
634
635 void
636 mousereport(XEvent *e) {
637 int x = x2col(e->xbutton.x);
638 int y = y2row(e->xbutton.y);
639 int button = e->xbutton.button;
640 int state = e->xbutton.state;
641 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
642 static int ob, ox, oy;
643
644 /* from urxvt */
645 if(e->xbutton.type == MotionNotify) {
646 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
647 return;
648 button = ob + 32;
649 ox = x, oy = y;
650 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
651 button = 3;
652 } else {
653 button -= Button1;
654 if(button >= 3)
655 button += 64 - 3;
656 if(e->xbutton.type == ButtonPress) {
657 ob = button;
658 ox = x, oy = y;
659 }
660 }
661
662 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
663 + (state & Mod4Mask ? 8 : 0)
664 + (state & ControlMask ? 16 : 0);
665
666 ttywrite(buf, sizeof(buf));
667 }
668
669 void
670 bpress(XEvent *e) {
671 if(IS_SET(MODE_MOUSE)) {
672 mousereport(e);
673 } else if(e->xbutton.button == Button1) {
674 if(sel.bx != -1) {
675 sel.bx = -1;
676 tsetdirt(sel.b.y, sel.e.y);
677 draw();
678 }
679 sel.mode = 1;
680 sel.ex = sel.bx = x2col(e->xbutton.x);
681 sel.ey = sel.by = y2row(e->xbutton.y);
682 } else if(e->xbutton.button == Button4) {
683 ttywrite("\031", 1);
684 } else if(e->xbutton.button == Button5) {
685 ttywrite("\005", 1);
686 }
687 }
688
689 void
690 selcopy(void) {
691 char *str, *ptr, *p;
692 int x, y, bufsize, is_selected = 0, size;
693 Glyph *gp, *last;
694
695 if(sel.bx == -1) {
696 str = NULL;
697 } else {
698 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
699 ptr = str = xmalloc(bufsize);
700
701 /* append every set & selected glyph to the selection */
702 for(y = 0; y < term.row; y++) {
703 gp = &term.line[y][0];
704 last = gp + term.col;
705
706 while(--last >= gp && !(last->state & GLYPH_SET))
707 /* nothing */;
708
709 for(x = 0; gp <= last; x++, ++gp) {
710 if(!(is_selected = selected(x, y)))
711 continue;
712
713 p = (gp->state & GLYPH_SET) ? gp->c : " ";
714 size = utf8size(p);
715 memcpy(ptr, p, size);
716 ptr += size;
717 }
718 /* \n at the end of every selected line except for the last one */
719 if(is_selected && y < sel.e.y)
720 *ptr++ = '\n';
721 }
722 *ptr = 0;
723 }
724 sel.alt = IS_SET(MODE_ALTSCREEN);
725 xsetsel(str);
726 }
727
728 void
729 selnotify(XEvent *e) {
730 ulong nitems, ofs, rem;
731 int format;
732 uchar *data;
733 Atom type;
734
735 ofs = 0;
736 do {
737 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
738 False, AnyPropertyType, &type, &format,
739 &nitems, &rem, &data)) {
740 fprintf(stderr, "Clipboard allocation failed\n");
741 return;
742 }
743 ttywrite((const char *) data, nitems * format / 8);
744 XFree(data);
745 /* number of 32-bit chunks returned */
746 ofs += nitems * format / 32;
747 } while(rem > 0);
748 }
749
750 void
751 selpaste(void) {
752 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
753 xw.win, CurrentTime);
754 }
755
756 void selclear(XEvent *e) {
757 if(sel.bx == -1)
758 return;
759 sel.bx = -1;
760 tsetdirt(sel.b.y, sel.e.y);
761 }
762
763 void
764 selrequest(XEvent *e) {
765 XSelectionRequestEvent *xsre;
766 XSelectionEvent xev;
767 Atom xa_targets, string;
768
769 xsre = (XSelectionRequestEvent *) e;
770 xev.type = SelectionNotify;
771 xev.requestor = xsre->requestor;
772 xev.selection = xsre->selection;
773 xev.target = xsre->target;
774 xev.time = xsre->time;
775 /* reject */
776 xev.property = None;
777
778 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
779 if(xsre->target == xa_targets) {
780 /* respond with the supported type */
781 string = sel.xtarget;
782 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
783 XA_ATOM, 32, PropModeReplace,
784 (uchar *) &string, 1);
785 xev.property = xsre->property;
786 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
787 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
788 xsre->target, 8, PropModeReplace,
789 (uchar *) sel.clip, strlen(sel.clip));
790 xev.property = xsre->property;
791 }
792
793 /* all done, send a notification to the listener */
794 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
795 fprintf(stderr, "Error sending SelectionNotify event\n");
796 }
797
798 void
799 xsetsel(char *str) {
800 /* register the selection for both the clipboard and the primary */
801 Atom clipboard;
802
803 free(sel.clip);
804 sel.clip = str;
805
806 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
807
808 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
809 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
810 }
811
812 void
813 brelease(XEvent *e) {
814 struct timeval now;
815
816 if(IS_SET(MODE_MOUSE)) {
817 mousereport(e);
818 return;
819 }
820
821 if(e->xbutton.button == Button2) {
822 selpaste();
823 } else if(e->xbutton.button == Button1) {
824 sel.mode = 0;
825 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
826 term.dirty[sel.ey] = 1;
827 if(sel.bx == sel.ex && sel.by == sel.ey) {
828 sel.bx = -1;
829 gettimeofday(&now, NULL);
830
831 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
832 /* triple click on the line */
833 sel.b.x = sel.bx = 0;
834 sel.e.x = sel.ex = term.col;
835 sel.b.y = sel.e.y = sel.ey;
836 selcopy();
837 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
838 /* double click to select word */
839 sel.bx = sel.ex;
840 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
841 term.line[sel.ey][sel.bx-1].c[0] != ' ') {
842 sel.bx--;
843 }
844 sel.b.x = sel.bx;
845 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
846 term.line[sel.ey][sel.ex+1].c[0] != ' ') {
847 sel.ex++;
848 }
849 sel.e.x = sel.ex;
850 sel.b.y = sel.e.y = sel.ey;
851 selcopy();
852 }
853 } else {
854 selcopy();
855 }
856 }
857
858 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
859 gettimeofday(&sel.tclick1, NULL);
860 }
861
862 void
863 bmotion(XEvent *e) {
864 int starty, endy, oldey, oldex;
865
866 if(IS_SET(MODE_MOUSE)) {
867 mousereport(e);
868 return;
869 }
870
871 if(sel.mode) {
872 oldey = sel.ey;
873 oldex = sel.ex;
874 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
875
876 if(oldey != sel.ey || oldex != sel.ex) {
877 starty = MIN(oldey, sel.ey);
878 endy = MAX(oldey, sel.ey);
879 tsetdirt(starty, endy);
880 }
881 }
882 }
883
884 void
885 die(const char *errstr, ...) {
886 va_list ap;
887
888 va_start(ap, errstr);
889 vfprintf(stderr, errstr, ap);
890 va_end(ap);
891 exit(EXIT_FAILURE);
892 }
893
894 void
895 execsh(void) {
896 char **args;
897 char *envshell = getenv("SHELL");
898 const struct passwd *pass = getpwuid(getuid());
899 char buf[sizeof(long) * 8 + 1];
900
901 unsetenv("COLUMNS");
902 unsetenv("LINES");
903 unsetenv("TERMCAP");
904
905 if(pass) {
906 setenv("LOGNAME", pass->pw_name, 1);
907 setenv("USER", pass->pw_name, 1);
908 setenv("SHELL", pass->pw_shell, 0);
909 setenv("HOME", pass->pw_dir, 0);
910 }
911
912 snprintf(buf, sizeof(buf), "%lu", xw.win);
913 setenv("WINDOWID", buf, 1);
914
915 signal(SIGCHLD, SIG_DFL);
916 signal(SIGHUP, SIG_DFL);
917 signal(SIGINT, SIG_DFL);
918 signal(SIGQUIT, SIG_DFL);
919 signal(SIGTERM, SIG_DFL);
920 signal(SIGALRM, SIG_DFL);
921
922 DEFAULT(envshell, shell);
923 setenv("TERM", termname, 1);
924 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
925 execvp(args[0], args);
926 exit(EXIT_FAILURE);
927 }
928
929 void
930 sigchld(int a) {
931 int stat = 0;
932
933 if(waitpid(pid, &stat, 0) < 0)
934 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
935
936 if(WIFEXITED(stat)) {
937 exit(WEXITSTATUS(stat));
938 } else {
939 exit(EXIT_FAILURE);
940 }
941 }
942
943 void
944 ttynew(void) {
945 int m, s;
946 struct winsize w = {term.row, term.col, 0, 0};
947
948 /* seems to work fine on linux, openbsd and freebsd */
949 if(openpty(&m, &s, NULL, NULL, &w) < 0)
950 die("openpty failed: %s\n", SERRNO);
951
952 switch(pid = fork()) {
953 case -1:
954 die("fork failed\n");
955 break;
956 case 0:
957 setsid(); /* create a new process group */
958 dup2(s, STDIN_FILENO);
959 dup2(s, STDOUT_FILENO);
960 dup2(s, STDERR_FILENO);
961 if(ioctl(s, TIOCSCTTY, NULL) < 0)
962 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
963 close(s);
964 close(m);
965 execsh();
966 break;
967 default:
968 close(s);
969 cmdfd = m;
970 signal(SIGCHLD, sigchld);
971 if(opt_io) {
972 iofd = (!strcmp(opt_io, "-")) ?
973 STDOUT_FILENO :
974 open(opt_io, O_WRONLY | O_CREAT, 0666);
975 if(iofd < 0) {
976 fprintf(stderr, "Error opening %s:%s\n",
977 opt_io, strerror(errno));
978 }
979 }
980 }
981 }
982
983 void
984 dump(char c) {
985 static int col;
986
987 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
988 if(++col % 10 == 0)
989 fprintf(stderr, "\n");
990 }
991
992 void
993 ttyread(void) {
994 static char buf[BUFSIZ];
995 static int buflen = 0;
996 char *ptr;
997 char s[UTF_SIZ];
998 int charsize; /* size of utf8 char in bytes */
999 long utf8c;
1000 int ret;
1001
1002 /* append read bytes to unprocessed bytes */
1003 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1004 die("Couldn't read from shell: %s\n", SERRNO);
1005
1006 /* process every complete utf8 char */
1007 buflen += ret;
1008 ptr = buf;
1009 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1010 charsize = utf8decode(ptr, &utf8c);
1011 utf8encode(&utf8c, s);
1012 tputc(s, charsize);
1013 ptr += charsize;
1014 buflen -= charsize;
1015 }
1016
1017 /* keep any uncomplete utf8 char for the next call */
1018 memmove(buf, ptr, buflen);
1019 }
1020
1021 void
1022 ttywrite(const char *s, size_t n) {
1023 if(write(cmdfd, s, n) == -1)
1024 die("write error on tty: %s\n", SERRNO);
1025 }
1026
1027 void
1028 ttyresize(void) {
1029 struct winsize w;
1030
1031 w.ws_row = term.row;
1032 w.ws_col = term.col;
1033 w.ws_xpixel = xw.tw;
1034 w.ws_ypixel = xw.th;
1035 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1036 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1037 }
1038
1039 void
1040 tsetdirt(int top, int bot) {
1041 int i;
1042
1043 LIMIT(top, 0, term.row-1);
1044 LIMIT(bot, 0, term.row-1);
1045
1046 for(i = top; i <= bot; i++)
1047 term.dirty[i] = 1;
1048 }
1049
1050 void
1051 tfulldirt(void) {
1052 tsetdirt(0, term.row-1);
1053 }
1054
1055 void
1056 tcursor(int mode) {
1057 static TCursor c;
1058
1059 if(mode == CURSOR_SAVE) {
1060 c = term.c;
1061 } else if(mode == CURSOR_LOAD) {
1062 term.c = c;
1063 tmoveto(c.x, c.y);
1064 }
1065 }
1066
1067 void
1068 treset(void) {
1069 uint i;
1070
1071 term.c = (TCursor){{
1072 .mode = ATTR_NULL,
1073 .fg = defaultfg,
1074 .bg = defaultbg
1075 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1076
1077 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1078 for(i = tabspaces; i < term.col; i += tabspaces)
1079 term.tabs[i] = 1;
1080 term.top = 0;
1081 term.bot = term.row - 1;
1082 term.mode = MODE_WRAP;
1083
1084 tclearregion(0, 0, term.col-1, term.row-1);
1085 tmoveto(0, 0);
1086 tcursor(CURSOR_SAVE);
1087 }
1088
1089 void
1090 tnew(int col, int row) {
1091 /* set screen size */
1092 term.row = row;
1093 term.col = col;
1094 term.line = xmalloc(term.row * sizeof(Line));
1095 term.alt = xmalloc(term.row * sizeof(Line));
1096 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
1097 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
1098
1099 for(row = 0; row < term.row; row++) {
1100 term.line[row] = xmalloc(term.col * sizeof(Glyph));
1101 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
1102 term.dirty[row] = 0;
1103 }
1104 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1105 /* setup screen */
1106 treset();
1107 }
1108
1109 void
1110 tswapscreen(void) {
1111 Line *tmp = term.line;
1112
1113 term.line = term.alt;
1114 term.alt = tmp;
1115 term.mode ^= MODE_ALTSCREEN;
1116 tfulldirt();
1117 }
1118
1119 void
1120 tscrolldown(int orig, int n) {
1121 int i;
1122 Line temp;
1123
1124 LIMIT(n, 0, term.bot-orig+1);
1125
1126 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1127
1128 for(i = term.bot; i >= orig+n; i--) {
1129 temp = term.line[i];
1130 term.line[i] = term.line[i-n];
1131 term.line[i-n] = temp;
1132
1133 term.dirty[i] = 1;
1134 term.dirty[i-n] = 1;
1135 }
1136
1137 selscroll(orig, n);
1138 }
1139
1140 void
1141 tscrollup(int orig, int n) {
1142 int i;
1143 Line temp;
1144 LIMIT(n, 0, term.bot-orig+1);
1145
1146 tclearregion(0, orig, term.col-1, orig+n-1);
1147
1148 for(i = orig; i <= term.bot-n; i++) {
1149 temp = term.line[i];
1150 term.line[i] = term.line[i+n];
1151 term.line[i+n] = temp;
1152
1153 term.dirty[i] = 1;
1154 term.dirty[i+n] = 1;
1155 }
1156
1157 selscroll(orig, -n);
1158 }
1159
1160 void
1161 selscroll(int orig, int n) {
1162 if(sel.bx == -1)
1163 return;
1164
1165 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1166 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1167 sel.bx = -1;
1168 return;
1169 }
1170 if(sel.by < term.top) {
1171 sel.by = term.top;
1172 sel.bx = 0;
1173 }
1174 if(sel.ey > term.bot) {
1175 sel.ey = term.bot;
1176 sel.ex = term.col;
1177 }
1178 sel.b.y = sel.by, sel.b.x = sel.bx;
1179 sel.e.y = sel.ey, sel.e.x = sel.ex;
1180 }
1181 }
1182
1183 void
1184 tnewline(int first_col) {
1185 int y = term.c.y;
1186
1187 if(y == term.bot) {
1188 tscrollup(term.top, 1);
1189 } else {
1190 y++;
1191 }
1192 tmoveto(first_col ? 0 : term.c.x, y);
1193 }
1194
1195 void
1196 csiparse(void) {
1197 /* int noarg = 1; */
1198 char *p = csiescseq.buf;
1199
1200 csiescseq.narg = 0;
1201 if(*p == '?')
1202 csiescseq.priv = 1, p++;
1203
1204 while(p < csiescseq.buf+csiescseq.len) {
1205 while(isdigit(*p)) {
1206 csiescseq.arg[csiescseq.narg] *= 10;
1207 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1208 }
1209 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ) {
1210 csiescseq.narg++, p++;
1211 } else {
1212 csiescseq.mode = *p;
1213 csiescseq.narg++;
1214
1215 return;
1216 }
1217 }
1218 }
1219
1220 /* for absolute user moves, when decom is set */
1221 void
1222 tmoveato(int x, int y) {
1223 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1224 }
1225
1226 void
1227 tmoveto(int x, int y) {
1228 int miny, maxy;
1229
1230 if(term.c.state & CURSOR_ORIGIN) {
1231 miny = term.top;
1232 maxy = term.bot;
1233 } else {
1234 miny = 0;
1235 maxy = term.row - 1;
1236 }
1237 LIMIT(x, 0, term.col-1);
1238 LIMIT(y, miny, maxy);
1239 term.c.state &= ~CURSOR_WRAPNEXT;
1240 term.c.x = x;
1241 term.c.y = y;
1242 }
1243
1244 void
1245 tsetchar(char *c, Glyph *attr, int x, int y) {
1246 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1247 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1248 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1249 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1250 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1251 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1252 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1253 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1254 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1255 };
1256
1257 /*
1258 * The table is proudly stolen from rxvt.
1259 */
1260 if(attr->mode & ATTR_GFX) {
1261 if(c[0] >= 0x41 && c[0] <= 0x7e
1262 && vt100_0[c[0] - 0x41]) {
1263 c = vt100_0[c[0] - 0x41];
1264 }
1265 }
1266
1267 term.dirty[y] = 1;
1268 term.line[y][x] = *attr;
1269 memcpy(term.line[y][x].c, c, UTF_SIZ);
1270 term.line[y][x].state |= GLYPH_SET;
1271 }
1272
1273 void
1274 tclearregion(int x1, int y1, int x2, int y2) {
1275 int x, y, temp;
1276
1277 if(x1 > x2)
1278 temp = x1, x1 = x2, x2 = temp;
1279 if(y1 > y2)
1280 temp = y1, y1 = y2, y2 = temp;
1281
1282 LIMIT(x1, 0, term.col-1);
1283 LIMIT(x2, 0, term.col-1);
1284 LIMIT(y1, 0, term.row-1);
1285 LIMIT(y2, 0, term.row-1);
1286
1287 for(y = y1; y <= y2; y++) {
1288 term.dirty[y] = 1;
1289 for(x = x1; x <= x2; x++)
1290 term.line[y][x].state = 0;
1291 }
1292 }
1293
1294 void
1295 tdeletechar(int n) {
1296 int src = term.c.x + n;
1297 int dst = term.c.x;
1298 int size = term.col - src;
1299
1300 term.dirty[term.c.y] = 1;
1301
1302 if(src >= term.col) {
1303 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1304 return;
1305 }
1306
1307 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1308 size * sizeof(Glyph));
1309 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1310 }
1311
1312 void
1313 tinsertblank(int n) {
1314 int src = term.c.x;
1315 int dst = src + n;
1316 int size = term.col - dst;
1317
1318 term.dirty[term.c.y] = 1;
1319
1320 if(dst >= term.col) {
1321 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1322 return;
1323 }
1324
1325 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1326 size * sizeof(Glyph));
1327 tclearregion(src, term.c.y, dst - 1, term.c.y);
1328 }
1329
1330 void
1331 tinsertblankline(int n) {
1332 if(term.c.y < term.top || term.c.y > term.bot)
1333 return;
1334
1335 tscrolldown(term.c.y, n);
1336 }
1337
1338 void
1339 tdeleteline(int n) {
1340 if(term.c.y < term.top || term.c.y > term.bot)
1341 return;
1342
1343 tscrollup(term.c.y, n);
1344 }
1345
1346 void
1347 tsetattr(int *attr, int l) {
1348 int i;
1349
1350 for(i = 0; i < l; i++) {
1351 switch(attr[i]) {
1352 case 0:
1353 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1354 | ATTR_ITALIC | ATTR_BLINK);
1355 term.c.attr.fg = defaultfg;
1356 term.c.attr.bg = defaultbg;
1357 break;
1358 case 1:
1359 term.c.attr.mode |= ATTR_BOLD;
1360 break;
1361 case 3: /* enter standout (highlight) */
1362 term.c.attr.mode |= ATTR_ITALIC;
1363 break;
1364 case 4:
1365 term.c.attr.mode |= ATTR_UNDERLINE;
1366 break;
1367 case 5:
1368 term.c.attr.mode |= ATTR_BLINK;
1369 break;
1370 case 7:
1371 term.c.attr.mode |= ATTR_REVERSE;
1372 break;
1373 case 21:
1374 case 22:
1375 term.c.attr.mode &= ~ATTR_BOLD;
1376 break;
1377 case 23: /* leave standout (highlight) mode */
1378 term.c.attr.mode &= ~ATTR_ITALIC;
1379 break;
1380 case 24:
1381 term.c.attr.mode &= ~ATTR_UNDERLINE;
1382 break;
1383 case 25:
1384 term.c.attr.mode &= ~ATTR_BLINK;
1385 break;
1386 case 27:
1387 term.c.attr.mode &= ~ATTR_REVERSE;
1388 break;
1389 case 38:
1390 if(i + 2 < l && attr[i + 1] == 5) {
1391 i += 2;
1392 if(BETWEEN(attr[i], 0, 255)) {
1393 term.c.attr.fg = attr[i];
1394 } else {
1395 fprintf(stderr,
1396 "erresc: bad fgcolor %d\n",
1397 attr[i]);
1398 }
1399 } else {
1400 fprintf(stderr,
1401 "erresc(38): gfx attr %d unknown\n",
1402 attr[i]);
1403 }
1404 break;
1405 case 39:
1406 term.c.attr.fg = defaultfg;
1407 break;
1408 case 48:
1409 if(i + 2 < l && attr[i + 1] == 5) {
1410 i += 2;
1411 if(BETWEEN(attr[i], 0, 255)) {
1412 term.c.attr.bg = attr[i];
1413 } else {
1414 fprintf(stderr,
1415 "erresc: bad bgcolor %d\n",
1416 attr[i]);
1417 }
1418 } else {
1419 fprintf(stderr,
1420 "erresc(48): gfx attr %d unknown\n",
1421 attr[i]);
1422 }
1423 break;
1424 case 49:
1425 term.c.attr.bg = defaultbg;
1426 break;
1427 default:
1428 if(BETWEEN(attr[i], 30, 37)) {
1429 term.c.attr.fg = attr[i] - 30;
1430 } else if(BETWEEN(attr[i], 40, 47)) {
1431 term.c.attr.bg = attr[i] - 40;
1432 } else if(BETWEEN(attr[i], 90, 97)) {
1433 term.c.attr.fg = attr[i] - 90 + 8;
1434 } else if(BETWEEN(attr[i], 100, 107)) {
1435 term.c.attr.bg = attr[i] - 100 + 8;
1436 } else {
1437 fprintf(stderr,
1438 "erresc(default): gfx attr %d unknown\n",
1439 attr[i]), csidump();
1440 }
1441 break;
1442 }
1443 }
1444 }
1445
1446 void
1447 tsetscroll(int t, int b) {
1448 int temp;
1449
1450 LIMIT(t, 0, term.row-1);
1451 LIMIT(b, 0, term.row-1);
1452 if(t > b) {
1453 temp = t;
1454 t = b;
1455 b = temp;
1456 }
1457 term.top = t;
1458 term.bot = b;
1459 }
1460
1461 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1462
1463 void
1464 tsetmode(bool priv, bool set, int *args, int narg) {
1465 int *lim, mode;
1466 bool alt;
1467
1468 for(lim = args + narg; args < lim; ++args) {
1469 if(priv) {
1470 switch(*args) {
1471 break;
1472 case 1: /* DECCKM -- Cursor key */
1473 MODBIT(term.mode, set, MODE_APPKEYPAD);
1474 break;
1475 case 5: /* DECSCNM -- Reverse video */
1476 mode = term.mode;
1477 MODBIT(term.mode, set, MODE_REVERSE);
1478 if(mode != term.mode)
1479 redraw();
1480 break;
1481 case 6: /* DECOM -- Origin */
1482 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1483 tmoveato(0, 0);
1484 break;
1485 case 7: /* DECAWM -- Auto wrap */
1486 MODBIT(term.mode, set, MODE_WRAP);
1487 break;
1488 case 0: /* Error (IGNORED) */
1489 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1490 case 3: /* DECCOLM -- Column (IGNORED) */
1491 case 4: /* DECSCLM -- Scroll (IGNORED) */
1492 case 8: /* DECARM -- Auto repeat (IGNORED) */
1493 case 18: /* DECPFF -- Printer feed (IGNORED) */
1494 case 19: /* DECPEX -- Printer extent (IGNORED) */
1495 case 42: /* DECNRCM -- National characters (IGNORED) */
1496 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1497 break;
1498 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1499 MODBIT(term.mode, !set, MODE_HIDE);
1500 break;
1501 case 1000: /* 1000,1002: enable xterm mouse report */
1502 MODBIT(term.mode, set, MODE_MOUSEBTN);
1503 break;
1504 case 1002:
1505 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1506 break;
1507 case 1049: /* = 1047 and 1048 */
1508 case 47:
1509 case 1047: {
1510 alt = IS_SET(MODE_ALTSCREEN) != 0;
1511 if(alt)
1512 tclearregion(0, 0, term.col-1, term.row-1);
1513 if(set ^ alt) /* set is always 1 or 0 */
1514 tswapscreen();
1515 if(*args != 1049)
1516 break;
1517 }
1518 /* pass through */
1519 case 1048:
1520 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1521 break;
1522 default:
1523 fprintf(stderr,
1524 "erresc: unknown private set/reset mode %d\n",
1525 *args);
1526 break;
1527 }
1528 } else {
1529 switch(*args) {
1530 case 0: /* Error (IGNORED) */
1531 break;
1532 case 2: /* KAM -- keyboard action */
1533 MODBIT(term.mode, set, MODE_KBDLOCK);
1534 break;
1535 case 4: /* IRM -- Insertion-replacement */
1536 MODBIT(term.mode, set, MODE_INSERT);
1537 break;
1538 case 12: /* XXX: SRM -- Send/Receive */
1539 break;
1540 case 20: /* LNM -- Linefeed/new line */
1541 MODBIT(term.mode, set, MODE_CRLF);
1542 break;
1543 default:
1544 fprintf(stderr,
1545 "erresc: unknown set/reset mode %d\n",
1546 *args);
1547 break;
1548 }
1549 }
1550 }
1551 }
1552 #undef MODBIT
1553
1554
1555 void
1556 csihandle(void) {
1557 switch(csiescseq.mode) {
1558 default:
1559 unknown:
1560 fprintf(stderr, "erresc: unknown csi ");
1561 csidump();
1562 /* die(""); */
1563 break;
1564 case '@': /* ICH -- Insert <n> blank char */
1565 DEFAULT(csiescseq.arg[0], 1);
1566 tinsertblank(csiescseq.arg[0]);
1567 break;
1568 case 'A': /* CUU -- Cursor <n> Up */
1569 DEFAULT(csiescseq.arg[0], 1);
1570 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1571 break;
1572 case 'B': /* CUD -- Cursor <n> Down */
1573 case 'e': /* VPR --Cursor <n> Down */
1574 DEFAULT(csiescseq.arg[0], 1);
1575 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1576 break;
1577 case 'c': /* DA -- Device Attributes */
1578 if(csiescseq.arg[0] == 0)
1579 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1580 break;
1581 case 'C': /* CUF -- Cursor <n> Forward */
1582 case 'a': /* HPR -- Cursor <n> Forward */
1583 DEFAULT(csiescseq.arg[0], 1);
1584 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1585 break;
1586 case 'D': /* CUB -- Cursor <n> Backward */
1587 DEFAULT(csiescseq.arg[0], 1);
1588 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1589 break;
1590 case 'E': /* CNL -- Cursor <n> Down and first col */
1591 DEFAULT(csiescseq.arg[0], 1);
1592 tmoveto(0, term.c.y+csiescseq.arg[0]);
1593 break;
1594 case 'F': /* CPL -- Cursor <n> Up and first col */
1595 DEFAULT(csiescseq.arg[0], 1);
1596 tmoveto(0, term.c.y-csiescseq.arg[0]);
1597 break;
1598 case 'g': /* TBC -- Tabulation clear */
1599 switch (csiescseq.arg[0]) {
1600 case 0: /* clear current tab stop */
1601 term.tabs[term.c.x] = 0;
1602 break;
1603 case 3: /* clear all the tabs */
1604 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1605 break;
1606 default:
1607 goto unknown;
1608 }
1609 break;
1610 case 'G': /* CHA -- Move to <col> */
1611 case '`': /* HPA */
1612 DEFAULT(csiescseq.arg[0], 1);
1613 tmoveto(csiescseq.arg[0]-1, term.c.y);
1614 break;
1615 case 'H': /* CUP -- Move to <row> <col> */
1616 case 'f': /* HVP */
1617 DEFAULT(csiescseq.arg[0], 1);
1618 DEFAULT(csiescseq.arg[1], 1);
1619 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1620 break;
1621 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1622 DEFAULT(csiescseq.arg[0], 1);
1623 while(csiescseq.arg[0]--)
1624 tputtab(1);
1625 break;
1626 case 'J': /* ED -- Clear screen */
1627 sel.bx = -1;
1628 switch(csiescseq.arg[0]) {
1629 case 0: /* below */
1630 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1631 if(term.c.y < term.row-1)
1632 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1633 break;
1634 case 1: /* above */
1635 if(term.c.y > 1)
1636 tclearregion(0, 0, term.col-1, term.c.y-1);
1637 tclearregion(0, term.c.y, term.c.x, term.c.y);
1638 break;
1639 case 2: /* all */
1640 tclearregion(0, 0, term.col-1, term.row-1);
1641 break;
1642 default:
1643 goto unknown;
1644 }
1645 break;
1646 case 'K': /* EL -- Clear line */
1647 switch(csiescseq.arg[0]) {
1648 case 0: /* right */
1649 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1650 break;
1651 case 1: /* left */
1652 tclearregion(0, term.c.y, term.c.x, term.c.y);
1653 break;
1654 case 2: /* all */
1655 tclearregion(0, term.c.y, term.col-1, term.c.y);
1656 break;
1657 }
1658 break;
1659 case 'S': /* SU -- Scroll <n> line up */
1660 DEFAULT(csiescseq.arg[0], 1);
1661 tscrollup(term.top, csiescseq.arg[0]);
1662 break;
1663 case 'T': /* SD -- Scroll <n> line down */
1664 DEFAULT(csiescseq.arg[0], 1);
1665 tscrolldown(term.top, csiescseq.arg[0]);
1666 break;
1667 case 'L': /* IL -- Insert <n> blank lines */
1668 DEFAULT(csiescseq.arg[0], 1);
1669 tinsertblankline(csiescseq.arg[0]);
1670 break;
1671 case 'l': /* RM -- Reset Mode */
1672 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1673 break;
1674 case 'M': /* DL -- Delete <n> lines */
1675 DEFAULT(csiescseq.arg[0], 1);
1676 tdeleteline(csiescseq.arg[0]);
1677 break;
1678 case 'X': /* ECH -- Erase <n> char */
1679 DEFAULT(csiescseq.arg[0], 1);
1680 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1681 break;
1682 case 'P': /* DCH -- Delete <n> char */
1683 DEFAULT(csiescseq.arg[0], 1);
1684 tdeletechar(csiescseq.arg[0]);
1685 break;
1686 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1687 DEFAULT(csiescseq.arg[0], 1);
1688 while(csiescseq.arg[0]--)
1689 tputtab(0);
1690 break;
1691 case 'd': /* VPA -- Move to <row> */
1692 DEFAULT(csiescseq.arg[0], 1);
1693 tmoveato(term.c.x, csiescseq.arg[0]-1);
1694 break;
1695 case 'h': /* SM -- Set terminal mode */
1696 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1697 break;
1698 case 'm': /* SGR -- Terminal attribute (color) */
1699 tsetattr(csiescseq.arg, csiescseq.narg);
1700 break;
1701 case 'r': /* DECSTBM -- Set Scrolling Region */
1702 if(csiescseq.priv) {
1703 goto unknown;
1704 } else {
1705 DEFAULT(csiescseq.arg[0], 1);
1706 DEFAULT(csiescseq.arg[1], term.row);
1707 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1708 tmoveato(0, 0);
1709 }
1710 break;
1711 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1712 tcursor(CURSOR_SAVE);
1713 break;
1714 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1715 tcursor(CURSOR_LOAD);
1716 break;
1717 }
1718 }
1719
1720 void
1721 csidump(void) {
1722 int i;
1723 uint c;
1724
1725 printf("ESC[");
1726 for(i = 0; i < csiescseq.len; i++) {
1727 c = csiescseq.buf[i] & 0xff;
1728 if(isprint(c)) {
1729 putchar(c);
1730 } else if(c == '\n') {
1731 printf("(\\n)");
1732 } else if(c == '\r') {
1733 printf("(\\r)");
1734 } else if(c == 0x1b) {
1735 printf("(\\e)");
1736 } else {
1737 printf("(%02x)", c);
1738 }
1739 }
1740 putchar('\n');
1741 }
1742
1743 void
1744 csireset(void) {
1745 memset(&csiescseq, 0, sizeof(csiescseq));
1746 }
1747
1748 void
1749 strhandle(void) {
1750 char *p;
1751
1752 /*
1753 * TODO: make this being useful in case of color palette change.
1754 */
1755 strparse();
1756
1757 p = strescseq.buf;
1758
1759 switch(strescseq.type) {
1760 case ']': /* OSC -- Operating System Command */
1761 switch(p[0]) {
1762 case '0':
1763 case '1':
1764 case '2':
1765 /*
1766 * TODO: Handle special chars in string, like umlauts.
1767 */
1768 if(p[1] == ';') {
1769 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1770 }
1771 break;
1772 case ';':
1773 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1774 break;
1775 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1776 break;
1777 default:
1778 fprintf(stderr, "erresc: unknown str ");
1779 strdump();
1780 break;
1781 }
1782 break;
1783 case 'k': /* old title set compatibility */
1784 XStoreName(xw.dpy, xw.win, strescseq.buf);
1785 break;
1786 case 'P': /* DSC -- Device Control String */
1787 case '_': /* APC -- Application Program Command */
1788 case '^': /* PM -- Privacy Message */
1789 default:
1790 fprintf(stderr, "erresc: unknown str ");
1791 strdump();
1792 /* die(""); */
1793 break;
1794 }
1795 }
1796
1797 void
1798 strparse(void) {
1799 /*
1800 * TODO: Implement parsing like for CSI when required.
1801 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1802 */
1803 return;
1804 }
1805
1806 void
1807 strdump(void) {
1808 int i;
1809 uint c;
1810
1811 printf("ESC%c", strescseq.type);
1812 for(i = 0; i < strescseq.len; i++) {
1813 c = strescseq.buf[i] & 0xff;
1814 if(isprint(c)) {
1815 putchar(c);
1816 } else if(c == '\n') {
1817 printf("(\\n)");
1818 } else if(c == '\r') {
1819 printf("(\\r)");
1820 } else if(c == 0x1b) {
1821 printf("(\\e)");
1822 } else {
1823 printf("(%02x)", c);
1824 }
1825 }
1826 printf("ESC\\\n");
1827 }
1828
1829 void
1830 strreset(void) {
1831 memset(&strescseq, 0, sizeof(strescseq));
1832 }
1833
1834 void
1835 tputtab(bool forward) {
1836 uint x = term.c.x;
1837
1838 if(forward) {
1839 if(x == term.col)
1840 return;
1841 for(++x; x < term.col && !term.tabs[x]; ++x)
1842 /* nothing */ ;
1843 } else {
1844 if(x == 0)
1845 return;
1846 for(--x; x > 0 && !term.tabs[x]; --x)
1847 /* nothing */ ;
1848 }
1849 tmoveto(x, term.c.y);
1850 }
1851
1852 void
1853 tputc(char *c, int len) {
1854 uchar ascii = *c;
1855 bool control = ascii < '\x20' || ascii == 0177;
1856
1857 if(iofd != -1) {
1858 if (xwrite(iofd, c, len) < 0) {
1859 fprintf(stderr, "Error writting in %s:%s\n",
1860 opt_io, strerror(errno));
1861 close(iofd);
1862 iofd = -1;
1863 }
1864 }
1865 /*
1866 * STR sequences must be checked before anything else
1867 * because it can use some control codes as part of the sequence.
1868 */
1869 if(term.esc & ESC_STR) {
1870 switch(ascii) {
1871 case '\033':
1872 term.esc = ESC_START | ESC_STR_END;
1873 break;
1874 case '\a': /* backwards compatibility to xterm */
1875 term.esc = 0;
1876 strhandle();
1877 break;
1878 default:
1879 strescseq.buf[strescseq.len++] = ascii;
1880 if(strescseq.len+1 >= STR_BUF_SIZ) {
1881 term.esc = 0;
1882 strhandle();
1883 }
1884 }
1885 return;
1886 }
1887
1888 /*
1889 * Actions of control codes must be performed as soon they arrive
1890 * because they can be embedded inside a control sequence, and
1891 * they must not cause conflicts with sequences.
1892 */
1893 if(control) {
1894 switch(ascii) {
1895 case '\t': /* HT */
1896 tputtab(1);
1897 return;
1898 case '\b': /* BS */
1899 tmoveto(term.c.x-1, term.c.y);
1900 return;
1901 case '\r': /* CR */
1902 tmoveto(0, term.c.y);
1903 return;
1904 case '\f': /* LF */
1905 case '\v': /* VT */
1906 case '\n': /* LF */
1907 /* go to first col if the mode is set */
1908 tnewline(IS_SET(MODE_CRLF));
1909 return;
1910 case '\a': /* BEL */
1911 if(!(xw.state & WIN_FOCUSED))
1912 xseturgency(1);
1913 return;
1914 case '\033': /* ESC */
1915 csireset();
1916 term.esc = ESC_START;
1917 return;
1918 case '\016': /* SO */
1919 term.c.attr.mode |= ATTR_GFX;
1920 return;
1921 case '\017': /* SI */
1922 term.c.attr.mode &= ~ATTR_GFX;
1923 return;
1924 case '\032': /* SUB */
1925 case '\030': /* CAN */
1926 csireset();
1927 return;
1928 case '\005': /* ENQ (IGNORED) */
1929 case '\000': /* NUL (IGNORED) */
1930 case '\021': /* XON (IGNORED) */
1931 case '\023': /* XOFF (IGNORED) */
1932 case 0177: /* DEL (IGNORED) */
1933 return;
1934 }
1935 } else if(term.esc & ESC_START) {
1936 if(term.esc & ESC_CSI) {
1937 csiescseq.buf[csiescseq.len++] = ascii;
1938 if(BETWEEN(ascii, 0x40, 0x7E)
1939 || csiescseq.len >= ESC_BUF_SIZ) {
1940 term.esc = 0;
1941 csiparse(), csihandle();
1942 }
1943 } else if(term.esc & ESC_STR_END) {
1944 term.esc = 0;
1945 if(ascii == '\\')
1946 strhandle();
1947 } else if(term.esc & ESC_ALTCHARSET) {
1948 switch(ascii) {
1949 case '0': /* Line drawing set */
1950 term.c.attr.mode |= ATTR_GFX;
1951 break;
1952 case 'B': /* USASCII */
1953 term.c.attr.mode &= ~ATTR_GFX;
1954 break;
1955 case 'A': /* UK (IGNORED) */
1956 case '<': /* multinational charset (IGNORED) */
1957 case '5': /* Finnish (IGNORED) */
1958 case 'C': /* Finnish (IGNORED) */
1959 case 'K': /* German (IGNORED) */
1960 break;
1961 default:
1962 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1963 }
1964 term.esc = 0;
1965 } else if(term.esc & ESC_TEST) {
1966 if(ascii == '8') { /* DEC screen alignment test. */
1967 char E[UTF_SIZ] = "E";
1968 int x, y;
1969
1970 for(x = 0; x < term.col; ++x) {
1971 for(y = 0; y < term.row; ++y)
1972 tsetchar(E, &term.c.attr, x, y);
1973 }
1974 }
1975 term.esc = 0;
1976 } else {
1977 switch(ascii) {
1978 case '[':
1979 term.esc |= ESC_CSI;
1980 break;
1981 case '#':
1982 term.esc |= ESC_TEST;
1983 break;
1984 case 'P': /* DCS -- Device Control String */
1985 case '_': /* APC -- Application Program Command */
1986 case '^': /* PM -- Privacy Message */
1987 case ']': /* OSC -- Operating System Command */
1988 case 'k': /* old title set compatibility */
1989 strreset();
1990 strescseq.type = ascii;
1991 term.esc |= ESC_STR;
1992 break;
1993 case '(': /* set primary charset G0 */
1994 term.esc |= ESC_ALTCHARSET;
1995 break;
1996 case ')': /* set secondary charset G1 (IGNORED) */
1997 case '*': /* set tertiary charset G2 (IGNORED) */
1998 case '+': /* set quaternary charset G3 (IGNORED) */
1999 term.esc = 0;
2000 break;
2001 case 'D': /* IND -- Linefeed */
2002 if(term.c.y == term.bot) {
2003 tscrollup(term.top, 1);
2004 } else {
2005 tmoveto(term.c.x, term.c.y+1);
2006 }
2007 term.esc = 0;
2008 break;
2009 case 'E': /* NEL -- Next line */
2010 tnewline(1); /* always go to first col */
2011 term.esc = 0;
2012 break;
2013 case 'H': /* HTS -- Horizontal tab stop */
2014 term.tabs[term.c.x] = 1;
2015 term.esc = 0;
2016 break;
2017 case 'M': /* RI -- Reverse index */
2018 if(term.c.y == term.top) {
2019 tscrolldown(term.top, 1);
2020 } else {
2021 tmoveto(term.c.x, term.c.y-1);
2022 }
2023 term.esc = 0;
2024 break;
2025 case 'Z': /* DECID -- Identify Terminal */
2026 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2027 term.esc = 0;
2028 break;
2029 case 'c': /* RIS -- Reset to inital state */
2030 treset();
2031 term.esc = 0;
2032 xresettitle();
2033 break;
2034 case '=': /* DECPAM -- Application keypad */
2035 term.mode |= MODE_APPKEYPAD;
2036 term.esc = 0;
2037 break;
2038 case '>': /* DECPNM -- Normal keypad */
2039 term.mode &= ~MODE_APPKEYPAD;
2040 term.esc = 0;
2041 break;
2042 case '7': /* DECSC -- Save Cursor */
2043 tcursor(CURSOR_SAVE);
2044 term.esc = 0;
2045 break;
2046 case '8': /* DECRC -- Restore Cursor */
2047 tcursor(CURSOR_LOAD);
2048 term.esc = 0;
2049 break;
2050 case '\\': /* ST -- Stop */
2051 term.esc = 0;
2052 break;
2053 default:
2054 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2055 (uchar) ascii, isprint(ascii)? ascii:'.');
2056 term.esc = 0;
2057 }
2058 }
2059 /*
2060 * All characters which forms part of a sequence are not
2061 * printed
2062 */
2063 return;
2064 }
2065 /*
2066 * Display control codes only if we are in graphic mode
2067 */
2068 if(control && !(term.c.attr.mode & ATTR_GFX))
2069 return;
2070 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2071 sel.bx = -1;
2072 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
2073 tnewline(1); /* always go to first col */
2074 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2075 if(term.c.x+1 < term.col)
2076 tmoveto(term.c.x+1, term.c.y);
2077 else
2078 term.c.state |= CURSOR_WRAPNEXT;
2079 }
2080
2081 int
2082 tresize(int col, int row) {
2083 int i, x;
2084 int minrow = MIN(row, term.row);
2085 int mincol = MIN(col, term.col);
2086 int slide = term.c.y - row + 1;
2087 bool *bp;
2088
2089 if(col < 1 || row < 1)
2090 return 0;
2091
2092 /* free unneeded rows */
2093 i = 0;
2094 if(slide > 0) {
2095 /* slide screen to keep cursor where we expect it -
2096 * tscrollup would work here, but we can optimize to
2097 * memmove because we're freeing the earlier lines */
2098 for(/* i = 0 */; i < slide; i++) {
2099 free(term.line[i]);
2100 free(term.alt[i]);
2101 }
2102 memmove(term.line, term.line + slide, row * sizeof(Line));
2103 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2104 }
2105 for(i += row; i < term.row; i++) {
2106 free(term.line[i]);
2107 free(term.alt[i]);
2108 }
2109
2110 /* resize to new height */
2111 term.line = xrealloc(term.line, row * sizeof(Line));
2112 term.alt = xrealloc(term.alt, row * sizeof(Line));
2113 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2114 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2115
2116 /* resize each row to new width, zero-pad if needed */
2117 for(i = 0; i < minrow; i++) {
2118 term.dirty[i] = 1;
2119 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2120 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2121 for(x = mincol; x < col; x++) {
2122 term.line[i][x].state = 0;
2123 term.alt[i][x].state = 0;
2124 }
2125 }
2126
2127 /* allocate any new rows */
2128 for(/* i == minrow */; i < row; i++) {
2129 term.dirty[i] = 1;
2130 term.line[i] = xcalloc(col, sizeof(Glyph));
2131 term.alt [i] = xcalloc(col, sizeof(Glyph));
2132 }
2133 if(col > term.col) {
2134 bp = term.tabs + term.col;
2135
2136 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2137 while(--bp > term.tabs && !*bp)
2138 /* nothing */ ;
2139 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2140 *bp = 1;
2141 }
2142 /* update terminal size */
2143 term.col = col;
2144 term.row = row;
2145 /* reset scrolling region */
2146 tsetscroll(0, row-1);
2147 /* make use of the LIMIT in tmoveto */
2148 tmoveto(term.c.x, term.c.y);
2149
2150 return (slide > 0);
2151 }
2152
2153 void
2154 xresize(int col, int row) {
2155 xw.tw = MAX(1, 2*borderpx + col * xw.cw);
2156 xw.th = MAX(1, 2*borderpx + row * xw.ch);
2157
2158 XftDrawChange(xw.draw, xw.buf);
2159 }
2160
2161 void
2162 xloadcols(void) {
2163 int i, r, g, b;
2164 XRenderColor color = { .alpha = 0 };
2165
2166 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2167 for(i = 0; i < LEN(colorname); i++) {
2168 if(!colorname[i])
2169 continue;
2170 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2171 die("Could not allocate color '%s'\n", colorname[i]);
2172 }
2173 }
2174
2175 /* load colors [16-255] ; same colors as xterm */
2176 for(i = 16, r = 0; r < 6; r++) {
2177 for(g = 0; g < 6; g++) {
2178 for(b = 0; b < 6; b++) {
2179 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
2180 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
2181 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
2182 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
2183 die("Could not allocate color %d\n", i);
2184 }
2185 i++;
2186 }
2187 }
2188 }
2189
2190 for(r = 0; r < 24; r++, i++) {
2191 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
2192 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
2193 &dc.col[i])) {
2194 die("Could not allocate color %d\n", i);
2195 }
2196 }
2197 }
2198
2199 void
2200 xtermclear(int col1, int row1, int col2, int row2) {
2201 XftDrawRect(xw.draw,
2202 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2203 borderpx + col1 * xw.cw,
2204 borderpx + row1 * xw.ch,
2205 (col2-col1+1) * xw.cw,
2206 (row2-row1+1) * xw.ch);
2207 }
2208
2209 /*
2210 * Absolute coordinates.
2211 */
2212 void
2213 xclear(int x1, int y1, int x2, int y2) {
2214 XftDrawRect(xw.draw,
2215 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2216 x1, y1, x2-x1, y2-y1);
2217 }
2218
2219 void
2220 xhints(void) {
2221 XClassHint class = {opt_class ? opt_class : termname, termname};
2222 XWMHints wm = {.flags = InputHint, .input = 1};
2223 XSizeHints *sizeh = NULL;
2224
2225 sizeh = XAllocSizeHints();
2226 if(xw.isfixed == False) {
2227 sizeh->flags = PSize | PResizeInc | PBaseSize;
2228 sizeh->height = xw.h;
2229 sizeh->width = xw.w;
2230 sizeh->height_inc = xw.ch;
2231 sizeh->width_inc = xw.cw;
2232 sizeh->base_height = 2*borderpx;
2233 sizeh->base_width = 2*borderpx;
2234 } else {
2235 sizeh->flags = PMaxSize | PMinSize;
2236 sizeh->min_width = sizeh->max_width = xw.fw;
2237 sizeh->min_height = sizeh->max_height = xw.fh;
2238 }
2239
2240 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2241 XFree(sizeh);
2242 }
2243
2244 int
2245 xloadfont(Font *f, FcPattern *pattern) {
2246 FcPattern *match;
2247 FcResult result;
2248
2249 match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
2250 if(!match)
2251 return 1;
2252 if(!(f->set = XftFontOpenPattern(xw.dpy, match))) {
2253 FcPatternDestroy(match);
2254 return 1;
2255 }
2256
2257 f->ascent = f->set->ascent;
2258 f->descent = f->set->descent;
2259 f->lbearing = 0;
2260 f->rbearing = f->set->max_advance_width;
2261
2262 f->height = f->set->height;
2263 f->width = f->lbearing + f->rbearing;
2264
2265 return 0;
2266 }
2267
2268 void
2269 xloadfonts(char *fontstr, int fontsize) {
2270 FcPattern *pattern;
2271 FcResult result;
2272 double fontval;
2273
2274 if(fontstr[0] == '-') {
2275 pattern = XftXlfdParse(fontstr, False, False);
2276 } else {
2277 pattern = FcNameParse((FcChar8 *)fontstr);
2278 }
2279
2280 if(!pattern)
2281 die("st: can't open font %s\n", fontstr);
2282
2283 if(fontsize > 0) {
2284 FcPatternDel(pattern, FC_PIXEL_SIZE);
2285 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2286 usedfontsize = fontsize;
2287 } else {
2288 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2289 if(result == FcResultMatch) {
2290 usedfontsize = (int)fontval;
2291 } else {
2292 /*
2293 * Default font size is 12, if none given. This is to
2294 * have a known usedfontsize value.
2295 */
2296 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2297 usedfontsize = 12;
2298 }
2299 }
2300
2301 if(xloadfont(&dc.font, pattern))
2302 die("st: can't open font %s\n", fontstr);
2303
2304 /* Setting character width and height. */
2305 xw.cw = dc.font.width;
2306 xw.ch = dc.font.height;
2307
2308 FcPatternDel(pattern, FC_WEIGHT);
2309 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2310 if(xloadfont(&dc.bfont, pattern))
2311 die("st: can't open font %s\n", fontstr);
2312
2313 FcPatternDel(pattern, FC_SLANT);
2314 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2315 if(xloadfont(&dc.ibfont, pattern))
2316 die("st: can't open font %s\n", fontstr);
2317
2318 FcPatternDel(pattern, FC_WEIGHT);
2319 if(xloadfont(&dc.ifont, pattern))
2320 die("st: can't open font %s\n", fontstr);
2321
2322 FcPatternDestroy(pattern);
2323 }
2324
2325 void
2326 xzoom(const Arg *arg)
2327 {
2328 xloadfonts(usedfont, usedfontsize + arg->i);
2329 cresize(0, 0);
2330 draw();
2331 }
2332
2333 void
2334 xinit(void) {
2335 XSetWindowAttributes attrs;
2336 Cursor cursor;
2337 Window parent;
2338 int sw, sh, major, minor;
2339
2340 if(!(xw.dpy = XOpenDisplay(NULL)))
2341 die("Can't open display\n");
2342 xw.scr = XDefaultScreen(xw.dpy);
2343 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2344
2345 /* font */
2346 usedfont = (opt_font == NULL)? font : opt_font;
2347 xloadfonts(usedfont, 0);
2348
2349 /* colors */
2350 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2351 xloadcols();
2352
2353 /* adjust fixed window geometry */
2354 if(xw.isfixed) {
2355 sw = DisplayWidth(xw.dpy, xw.scr);
2356 sh = DisplayHeight(xw.dpy, xw.scr);
2357 if(xw.fx < 0)
2358 xw.fx = sw + xw.fx - xw.fw - 1;
2359 if(xw.fy < 0)
2360 xw.fy = sh + xw.fy - xw.fh - 1;
2361
2362 xw.h = xw.fh;
2363 xw.w = xw.fw;
2364 } else {
2365 /* window - default size */
2366 xw.h = 2*borderpx + term.row * xw.ch;
2367 xw.w = 2*borderpx + term.col * xw.cw;
2368 xw.fx = 0;
2369 xw.fy = 0;
2370 }
2371
2372 attrs.background_pixel = dc.col[defaultbg].pixel;
2373 attrs.border_pixel = dc.col[defaultbg].pixel;
2374 attrs.bit_gravity = NorthWestGravity;
2375 attrs.event_mask = FocusChangeMask | KeyPressMask
2376 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2377 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2378 attrs.colormap = xw.cmap;
2379
2380 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
2381 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2382 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2383 xw.vis,
2384 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2385 | CWColormap,
2386 &attrs);
2387
2388 /* double buffering */
2389 if(!XdbeQueryExtension(xw.dpy, &major, &minor))
2390 die("Xdbe extension is not present\n");
2391 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
2392
2393 /* Xft rendering context */
2394 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2395
2396 /* input methods */
2397 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
2398 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2399 | XIMStatusNothing, XNClientWindow, xw.win,
2400 XNFocusWindow, xw.win, NULL);
2401 /* gc */
2402 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
2403
2404 /* white cursor, black outline */
2405 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2406 XDefineCursor(xw.dpy, xw.win, cursor);
2407 XRecolorCursor(xw.dpy, cursor,
2408 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2409 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2410
2411 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2412 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2413 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2414
2415 xresettitle();
2416 XMapWindow(xw.dpy, xw.win);
2417 xhints();
2418 XSync(xw.dpy, 0);
2419 }
2420
2421 void
2422 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2423 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2424 width = charlen * xw.cw;
2425 Font *font = &dc.font;
2426 XGlyphInfo extents;
2427 Colour *fg = &dc.col[base.fg], *bg = &dc.col[base.bg],
2428 *temp, revfg, revbg;
2429 XRenderColor colfg, colbg;
2430
2431 if(base.mode & ATTR_BOLD) {
2432 if(BETWEEN(base.fg, 0, 7)) {
2433 /* basic system colors */
2434 fg = &dc.col[base.fg + 8];
2435 } else if(BETWEEN(base.fg, 16, 195)) {
2436 /* 256 colors */
2437 fg = &dc.col[base.fg + 36];
2438 } else if(BETWEEN(base.fg, 232, 251)) {
2439 /* greyscale */
2440 fg = &dc.col[base.fg + 4];
2441 }
2442 /*
2443 * Those ranges will not be brightened:
2444 * 8 - 15 – bright system colors
2445 * 196 - 231 – highest 256 color cube
2446 * 252 - 255 – brightest colors in greyscale
2447 */
2448 font = &dc.bfont;
2449 }
2450
2451 if(base.mode & ATTR_ITALIC)
2452 font = &dc.ifont;
2453 if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
2454 font = &dc.ibfont;
2455
2456 if(IS_SET(MODE_REVERSE)) {
2457 if(fg == &dc.col[defaultfg]) {
2458 fg = &dc.col[defaultbg];
2459 } else {
2460 colfg.red = ~fg->color.red;
2461 colfg.green = ~fg->color.green;
2462 colfg.blue = ~fg->color.blue;
2463 colfg.alpha = fg->color.alpha;
2464 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2465 fg = &revfg;
2466 }
2467
2468 if(bg == &dc.col[defaultbg]) {
2469 bg = &dc.col[defaultfg];
2470 } else {
2471 colbg.red = ~bg->color.red;
2472 colbg.green = ~bg->color.green;
2473 colbg.blue = ~bg->color.blue;
2474 colbg.alpha = bg->color.alpha;
2475 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2476 bg = &revbg;
2477 }
2478 }
2479
2480 if(base.mode & ATTR_REVERSE)
2481 temp = fg, fg = bg, bg = temp;
2482
2483 XftTextExtentsUtf8(xw.dpy, font->set, (FcChar8 *)s, bytelen,
2484 &extents);
2485 width = extents.xOff;
2486
2487 /* Intelligent cleaning up of the borders. */
2488 if(x == 0) {
2489 xclear(0, (y == 0)? 0 : winy, borderpx,
2490 winy + xw.ch + (y == term.row-1)? xw.h : 0);
2491 }
2492 if(x + charlen >= term.col-1) {
2493 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2494 (y == term.row-1)? xw.h : (winy + xw.ch));
2495 }
2496 if(y == 0)
2497 xclear(winx, 0, winx + width, borderpx);
2498 if(y == term.row-1)
2499 xclear(winx, winy + xw.ch, winx + width, xw.h);
2500
2501 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
2502 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
2503 winy + font->ascent, (FcChar8 *)s, bytelen);
2504
2505 if(base.mode & ATTR_UNDERLINE) {
2506 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
2507 width, 1);
2508 }
2509 }
2510
2511 void
2512 xdrawcursor(void) {
2513 static int oldx = 0, oldy = 0;
2514 int sl;
2515 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs, 0};
2516
2517 LIMIT(oldx, 0, term.col-1);
2518 LIMIT(oldy, 0, term.row-1);
2519
2520 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2521 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2522
2523 /* remove the old cursor */
2524 if(term.line[oldy][oldx].state & GLYPH_SET) {
2525 sl = utf8size(term.line[oldy][oldx].c);
2526 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
2527 oldy, 1, sl);
2528 } else {
2529 xtermclear(oldx, oldy, oldx, oldy);
2530 }
2531
2532 /* draw the new one */
2533 if(!(IS_SET(MODE_HIDE))) {
2534 if(!(xw.state & WIN_FOCUSED))
2535 g.bg = defaultucs;
2536
2537 if(IS_SET(MODE_REVERSE))
2538 g.mode |= ATTR_REVERSE, g.fg = defaultcs, g.bg = defaultfg;
2539
2540 sl = utf8size(g.c);
2541 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2542 oldx = term.c.x, oldy = term.c.y;
2543 }
2544 }
2545
2546 void
2547 xresettitle(void) {
2548 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
2549 }
2550
2551 void
2552 redraw(void) {
2553 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2554
2555 tfulldirt();
2556 draw();
2557 XSync(xw.dpy, False); /* necessary for a good tput flash */
2558 nanosleep(&tv, NULL);
2559 }
2560
2561 void
2562 draw(void) {
2563 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2564
2565 drawregion(0, 0, term.col, term.row);
2566 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2567 }
2568
2569 void
2570 drawregion(int x1, int y1, int x2, int y2) {
2571 int ic, ib, x, y, ox, sl;
2572 Glyph base, new;
2573 char buf[DRAW_BUF_SIZ];
2574 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN) != 0;
2575
2576 if((sel.alt != 0) ^ alt)
2577 ena_sel = 0;
2578 if(!(xw.state & WIN_VISIBLE))
2579 return;
2580
2581 for(y = y1; y < y2; y++) {
2582 if(!term.dirty[y])
2583 continue;
2584
2585 xtermclear(0, y, term.col, y);
2586 term.dirty[y] = 0;
2587 base = term.line[y][0];
2588 ic = ib = ox = 0;
2589 for(x = x1; x < x2; x++) {
2590 new = term.line[y][x];
2591 if(ena_sel && *(new.c) && selected(x, y))
2592 new.mode ^= ATTR_REVERSE;
2593 if(ib > 0 && (!(new.state & GLYPH_SET)
2594 || ATTRCMP(base, new)
2595 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2596 xdraws(buf, base, ox, y, ic, ib);
2597 ic = ib = 0;
2598 }
2599 if(new.state & GLYPH_SET) {
2600 if(ib == 0) {
2601 ox = x;
2602 base = new;
2603 }
2604 sl = utf8size(new.c);
2605 memcpy(buf+ib, new.c, sl);
2606 ib += sl;
2607 ++ic;
2608 }
2609 }
2610 if(ib > 0)
2611 xdraws(buf, base, ox, y, ic, ib);
2612 }
2613 xdrawcursor();
2614 }
2615
2616 void
2617 expose(XEvent *ev) {
2618 XExposeEvent *e = &ev->xexpose;
2619
2620 if(xw.state & WIN_REDRAW) {
2621 if(!e->count)
2622 xw.state &= ~WIN_REDRAW;
2623 }
2624 }
2625
2626 void
2627 visibility(XEvent *ev) {
2628 XVisibilityEvent *e = &ev->xvisibility;
2629
2630 if(e->state == VisibilityFullyObscured) {
2631 xw.state &= ~WIN_VISIBLE;
2632 } else if(!(xw.state & WIN_VISIBLE)) {
2633 /* need a full redraw for next Expose, not just a buf copy */
2634 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2635 }
2636 }
2637
2638 void
2639 unmap(XEvent *ev) {
2640 xw.state &= ~WIN_VISIBLE;
2641 }
2642
2643 void
2644 xseturgency(int add) {
2645 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2646
2647 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2648 XSetWMHints(xw.dpy, xw.win, h);
2649 XFree(h);
2650 }
2651
2652 void
2653 focus(XEvent *ev) {
2654 if(ev->type == FocusIn) {
2655 XSetICFocus(xw.xic);
2656 xw.state |= WIN_FOCUSED;
2657 xseturgency(0);
2658 } else {
2659 XUnsetICFocus(xw.xic);
2660 xw.state &= ~WIN_FOCUSED;
2661 }
2662 }
2663
2664 char*
2665 kmap(KeySym k, uint state) {
2666 int i;
2667 uint mask;
2668
2669 state &= ~Mod2Mask;
2670 for(i = 0; i < LEN(key); i++) {
2671 mask = key[i].mask;
2672
2673 if(key[i].k == k && ((state & mask) == mask
2674 || (mask == XK_NO_MOD && !state))) {
2675 return (char*)key[i].s;
2676 }
2677 }
2678 return NULL;
2679 }
2680
2681 void
2682 kpress(XEvent *ev) {
2683 XKeyEvent *e = &ev->xkey;
2684 KeySym ksym;
2685 char buf[32], *customkey;
2686 int len, meta, shift, i;
2687 Status status;
2688
2689 if (IS_SET(MODE_KBDLOCK))
2690 return;
2691
2692 meta = e->state & Mod1Mask;
2693 shift = e->state & ShiftMask;
2694 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2695
2696 /* 1. shortcuts */
2697 for(i = 0; i < LEN(shortcuts); i++) {
2698 if((ksym == shortcuts[i].keysym)
2699 && (CLEANMASK(shortcuts[i].mod) == \
2700 CLEANMASK(e->state))
2701 && shortcuts[i].func) {
2702 shortcuts[i].func(&(shortcuts[i].arg));
2703 }
2704 }
2705
2706 /* 2. custom keys from config.h */
2707 if((customkey = kmap(ksym, e->state))) {
2708 ttywrite(customkey, strlen(customkey));
2709 /* 2. hardcoded (overrides X lookup) */
2710 } else {
2711 switch(ksym) {
2712 case XK_Up:
2713 case XK_Down:
2714 case XK_Left:
2715 case XK_Right:
2716 /* XXX: shift up/down doesn't work */
2717 sprintf(buf, "\033%c%c",
2718 IS_SET(MODE_APPKEYPAD) ? 'O' : '[',
2719 (shift ? "dacb":"DACB")[ksym - XK_Left]);
2720 ttywrite(buf, 3);
2721 break;
2722 case XK_Insert:
2723 if(shift)
2724 selpaste();
2725 break;
2726 case XK_Return:
2727 if(meta)
2728 ttywrite("\033", 1);
2729
2730 if(IS_SET(MODE_CRLF)) {
2731 ttywrite("\r\n", 2);
2732 } else {
2733 ttywrite("\r", 1);
2734 }
2735 break;
2736 /* 3. X lookup */
2737 default:
2738 if(len > 0) {
2739 if(meta && len == 1)
2740 ttywrite("\033", 1);
2741 ttywrite(buf, len);
2742 }
2743 break;
2744 }
2745 }
2746 }
2747
2748 void
2749 cmessage(XEvent *e) {
2750 /* See xembed specs
2751 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2752 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2753 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2754 xw.state |= WIN_FOCUSED;
2755 xseturgency(0);
2756 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2757 xw.state &= ~WIN_FOCUSED;
2758 }
2759 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
2760 /* Send SIGHUP to shell */
2761 kill(pid, SIGHUP);
2762 exit(EXIT_SUCCESS);
2763 }
2764 }
2765
2766 void
2767 cresize(int width, int height)
2768 {
2769 int col, row;
2770
2771 if(width != 0)
2772 xw.w = width;
2773 if(height != 0)
2774 xw.h = height;
2775
2776 col = (xw.w - 2*borderpx) / xw.cw;
2777 row = (xw.h - 2*borderpx) / xw.ch;
2778
2779 tresize(col, row);
2780 xresize(col, row);
2781 ttyresize();
2782 }
2783
2784 void
2785 resize(XEvent *e) {
2786 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2787 return;
2788
2789 cresize(e->xconfigure.width, e->xconfigure.height);
2790 }
2791
2792 void
2793 run(void) {
2794 XEvent ev;
2795 fd_set rfd;
2796 int xfd = XConnectionNumber(xw.dpy), i;
2797 struct timeval drawtimeout, *tv = NULL;
2798
2799 for(i = 0;; i++) {
2800 FD_ZERO(&rfd);
2801 FD_SET(cmdfd, &rfd);
2802 FD_SET(xfd, &rfd);
2803 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
2804 if(errno == EINTR)
2805 continue;
2806 die("select failed: %s\n", SERRNO);
2807 }
2808
2809 /*
2810 * Stop after a certain number of reads so the user does not
2811 * feel like the system is stuttering.
2812 */
2813 if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
2814 ttyread();
2815
2816 /*
2817 * Just wait a bit so it isn't disturbing the
2818 * user and the system is able to write something.
2819 */
2820 drawtimeout.tv_sec = 0;
2821 drawtimeout.tv_usec = 5;
2822 tv = &drawtimeout;
2823 continue;
2824 }
2825 i = 0;
2826 tv = NULL;
2827
2828 while(XPending(xw.dpy)) {
2829 XNextEvent(xw.dpy, &ev);
2830 if(XFilterEvent(&ev, None))
2831 continue;
2832 if(handler[ev.type])
2833 (handler[ev.type])(&ev);
2834 }
2835
2836 draw();
2837 XFlush(xw.dpy);
2838 }
2839 }
2840
2841 int
2842 main(int argc, char *argv[]) {
2843 int i, bitm, xr, yr;
2844 uint wr, hr;
2845
2846 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2847 xw.isfixed = False;
2848
2849 for(i = 1; i < argc; i++) {
2850 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2851 case 'c':
2852 if(++i < argc)
2853 opt_class = argv[i];
2854 break;
2855 case 'e':
2856 /* eat every remaining arguments */
2857 if(++i < argc)
2858 opt_cmd = &argv[i];
2859 goto run;
2860 case 'f':
2861 if(++i < argc)
2862 opt_font = argv[i];
2863 break;
2864 case 'g':
2865 if(++i >= argc)
2866 break;
2867
2868 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2869 if(bitm & XValue)
2870 xw.fx = xr;
2871 if(bitm & YValue)
2872 xw.fy = yr;
2873 if(bitm & WidthValue)
2874 xw.fw = (int)wr;
2875 if(bitm & HeightValue)
2876 xw.fh = (int)hr;
2877 if(bitm & XNegative && xw.fx == 0)
2878 xw.fx = -1;
2879 if(bitm & XNegative && xw.fy == 0)
2880 xw.fy = -1;
2881
2882 if(xw.fh != 0 && xw.fw != 0)
2883 xw.isfixed = True;
2884 break;
2885 case 'o':
2886 if(++i < argc)
2887 opt_io = argv[i];
2888 break;
2889 case 't':
2890 if(++i < argc)
2891 opt_title = argv[i];
2892 break;
2893 case 'v':
2894 default:
2895 die(USAGE);
2896 case 'w':
2897 if(++i < argc)
2898 opt_embed = argv[i];
2899 break;
2900 }
2901 }
2902
2903 run:
2904 setlocale(LC_CTYPE, "");
2905 XSetLocaleModifiers("");
2906 tnew(80, 24);
2907 xinit();
2908 ttynew();
2909 selinit();
2910 run();
2911 return 0;
2912 }
2913