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