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1 /* See LICENSE for license details. */
2 #include <ctype.h>
3 #include <errno.h>
4 #include <fcntl.h>
5 #include <limits.h>
6 #include <locale.h>
7 #include <pwd.h>
8 #include <stdarg.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <signal.h>
13 #include <stdint.h>
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
16 #include <sys/stat.h>
17 #include <sys/time.h>
18 #include <sys/types.h>
19 #include <sys/wait.h>
20 #include <termios.h>
21 #include <time.h>
22 #include <unistd.h>
23 #include <libgen.h>
24 #include <X11/Xatom.h>
25 #include <X11/Xlib.h>
26 #include <X11/Xutil.h>
27 #include <X11/cursorfont.h>
28 #include <X11/keysym.h>
29 #include <X11/Xft/Xft.h>
30 #include <X11/XKBlib.h>
31 #include <fontconfig/fontconfig.h>
32 #include <wchar.h>
33
34 #include "arg.h"
35
36 char *argv0;
37
38 #define Glyph Glyph_
39 #define Font Font_
40
41 #if defined(__linux)
42 #include <pty.h>
43 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
44 #include <util.h>
45 #elif defined(__FreeBSD__) || defined(__DragonFly__)
46 #include <libutil.h>
47 #endif
48
49
50 /* XEMBED messages */
51 #define XEMBED_FOCUS_IN 4
52 #define XEMBED_FOCUS_OUT 5
53
54 /* Arbitrary sizes */
55 #define UTF_INVALID 0xFFFD
56 #define UTF_SIZ 4
57 #define ESC_BUF_SIZ (128*UTF_SIZ)
58 #define ESC_ARG_SIZ 16
59 #define STR_BUF_SIZ ESC_BUF_SIZ
60 #define STR_ARG_SIZ ESC_ARG_SIZ
61 #define XK_ANY_MOD UINT_MAX
62 #define XK_NO_MOD 0
63 #define XK_SWITCH_MOD (1<<13)
64
65 /* macros */
66 #define MIN(a, b) ((a) < (b) ? (a) : (b))
67 #define MAX(a, b) ((a) < (b) ? (b) : (a))
68 #define LEN(a) (sizeof(a) / sizeof(a)[0])
69 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
70 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
71 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
72 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
73 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
74 #define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL)
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 || \
77 (a).bg != (b).bg)
78 #define IS_SET(flag) ((term.mode & (flag)) != 0)
79 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
80 (t1.tv_nsec-t2.tv_nsec)/1E6)
81 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
82
83 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
84 #define IS_TRUECOL(x) (1 << 24 & (x))
85 #define TRUERED(x) (((x) & 0xff0000) >> 8)
86 #define TRUEGREEN(x) (((x) & 0xff00))
87 #define TRUEBLUE(x) (((x) & 0xff) << 8)
88
89
90 enum glyph_attribute {
91 ATTR_NULL = 0,
92 ATTR_BOLD = 1 << 0,
93 ATTR_FAINT = 1 << 1,
94 ATTR_ITALIC = 1 << 2,
95 ATTR_UNDERLINE = 1 << 3,
96 ATTR_BLINK = 1 << 4,
97 ATTR_REVERSE = 1 << 5,
98 ATTR_INVISIBLE = 1 << 6,
99 ATTR_STRUCK = 1 << 7,
100 ATTR_WRAP = 1 << 8,
101 ATTR_WIDE = 1 << 9,
102 ATTR_WDUMMY = 1 << 10,
103 ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
104 };
105
106 enum cursor_movement {
107 CURSOR_SAVE,
108 CURSOR_LOAD
109 };
110
111 enum cursor_state {
112 CURSOR_DEFAULT = 0,
113 CURSOR_WRAPNEXT = 1,
114 CURSOR_ORIGIN = 2
115 };
116
117 enum term_mode {
118 MODE_WRAP = 1 << 0,
119 MODE_INSERT = 1 << 1,
120 MODE_APPKEYPAD = 1 << 2,
121 MODE_ALTSCREEN = 1 << 3,
122 MODE_CRLF = 1 << 4,
123 MODE_MOUSEBTN = 1 << 5,
124 MODE_MOUSEMOTION = 1 << 6,
125 MODE_REVERSE = 1 << 7,
126 MODE_KBDLOCK = 1 << 8,
127 MODE_HIDE = 1 << 9,
128 MODE_ECHO = 1 << 10,
129 MODE_APPCURSOR = 1 << 11,
130 MODE_MOUSESGR = 1 << 12,
131 MODE_8BIT = 1 << 13,
132 MODE_BLINK = 1 << 14,
133 MODE_FBLINK = 1 << 15,
134 MODE_FOCUS = 1 << 16,
135 MODE_MOUSEX10 = 1 << 17,
136 MODE_MOUSEMANY = 1 << 18,
137 MODE_BRCKTPASTE = 1 << 19,
138 MODE_PRINT = 1 << 20,
139 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
140 |MODE_MOUSEMANY,
141 };
142
143 enum charset {
144 CS_GRAPHIC0,
145 CS_GRAPHIC1,
146 CS_UK,
147 CS_USA,
148 CS_MULTI,
149 CS_GER,
150 CS_FIN
151 };
152
153 enum escape_state {
154 ESC_START = 1,
155 ESC_CSI = 2,
156 ESC_STR = 4, /* DCS, OSC, PM, APC */
157 ESC_ALTCHARSET = 8,
158 ESC_STR_END = 16, /* a final string was encountered */
159 ESC_TEST = 32, /* Enter in test mode */
160 };
161
162 enum window_state {
163 WIN_VISIBLE = 1,
164 WIN_FOCUSED = 2
165 };
166
167 enum selection_mode {
168 SEL_IDLE = 0,
169 SEL_EMPTY = 1,
170 SEL_READY = 2
171 };
172
173 enum selection_type {
174 SEL_REGULAR = 1,
175 SEL_RECTANGULAR = 2
176 };
177
178 enum selection_snap {
179 SNAP_WORD = 1,
180 SNAP_LINE = 2
181 };
182
183 typedef unsigned char uchar;
184 typedef unsigned int uint;
185 typedef unsigned long ulong;
186 typedef unsigned short ushort;
187
188 typedef uint_least32_t Rune;
189
190 typedef XftDraw *Draw;
191 typedef XftColor Color;
192
193 typedef struct {
194 Rune u; /* character code */
195 ushort mode; /* attribute flags */
196 uint32_t fg; /* foreground */
197 uint32_t bg; /* background */
198 } Glyph;
199
200 typedef Glyph *Line;
201
202 typedef struct {
203 Glyph attr; /* current char attributes */
204 int x;
205 int y;
206 char state;
207 } TCursor;
208
209 /* CSI Escape sequence structs */
210 /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
211 typedef struct {
212 char buf[ESC_BUF_SIZ]; /* raw string */
213 int len; /* raw string length */
214 char priv;
215 int arg[ESC_ARG_SIZ];
216 int narg; /* nb of args */
217 char mode[2];
218 } CSIEscape;
219
220 /* STR Escape sequence structs */
221 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
222 typedef struct {
223 char type; /* ESC type ... */
224 char buf[STR_BUF_SIZ]; /* raw string */
225 int len; /* raw string length */
226 char *args[STR_ARG_SIZ];
227 int narg; /* nb of args */
228 } STREscape;
229
230 /* Internal representation of the screen */
231 typedef struct {
232 int row; /* nb row */
233 int col; /* nb col */
234 Line *line; /* screen */
235 Line *alt; /* alternate screen */
236 int *dirty; /* dirtyness of lines */
237 XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
238 TCursor c; /* cursor */
239 int top; /* top scroll limit */
240 int bot; /* bottom scroll limit */
241 int mode; /* terminal mode flags */
242 int esc; /* escape state flags */
243 char trantbl[4]; /* charset table translation */
244 int charset; /* current charset */
245 int icharset; /* selected charset for sequence */
246 int numlock; /* lock numbers in keyboard */
247 int *tabs;
248 } Term;
249
250 /* Purely graphic info */
251 typedef struct {
252 Display *dpy;
253 Colormap cmap;
254 Window win;
255 Drawable buf;
256 Atom xembed, wmdeletewin, netwmname, netwmpid;
257 XIM xim;
258 XIC xic;
259 Draw draw;
260 Visual *vis;
261 XSetWindowAttributes attrs;
262 int scr;
263 int isfixed; /* is fixed geometry? */
264 int l, t; /* left and top offset */
265 int gm; /* geometry mask */
266 int tw, th; /* tty width and height */
267 int w, h; /* window width and height */
268 int ch; /* char height */
269 int cw; /* char width */
270 char state; /* focus, redraw, visible */
271 int cursor; /* cursor style */
272 } XWindow;
273
274 typedef struct {
275 uint b;
276 uint mask;
277 char *s;
278 } MouseShortcut;
279
280 typedef struct {
281 KeySym k;
282 uint mask;
283 char *s;
284 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
285 signed char appkey; /* application keypad */
286 signed char appcursor; /* application cursor */
287 signed char crlf; /* crlf mode */
288 } Key;
289
290 typedef struct {
291 int mode;
292 int type;
293 int snap;
294 /*
295 * Selection variables:
296 * nb – normalized coordinates of the beginning of the selection
297 * ne – normalized coordinates of the end of the selection
298 * ob – original coordinates of the beginning of the selection
299 * oe – original coordinates of the end of the selection
300 */
301 struct {
302 int x, y;
303 } nb, ne, ob, oe;
304
305 char *primary, *clipboard;
306 Atom xtarget;
307 int alt;
308 struct timespec tclick1;
309 struct timespec tclick2;
310 } Selection;
311
312 typedef union {
313 int i;
314 uint ui;
315 float f;
316 const void *v;
317 } Arg;
318
319 typedef struct {
320 uint mod;
321 KeySym keysym;
322 void (*func)(const Arg *);
323 const Arg arg;
324 } Shortcut;
325
326 /* function definitions used in config.h */
327 static void clipcopy(const Arg *);
328 static void clippaste(const Arg *);
329 static void numlock(const Arg *);
330 static void selpaste(const Arg *);
331 static void xzoom(const Arg *);
332 static void xzoomabs(const Arg *);
333 static void xzoomreset(const Arg *);
334 static void printsel(const Arg *);
335 static void printscreen(const Arg *) ;
336 static void toggleprinter(const Arg *);
337 static void sendbreak(const Arg *);
338
339 /* Config.h for applying patches and the configuration. */
340 #include "config.h"
341
342 /* Font structure */
343 typedef struct {
344 int height;
345 int width;
346 int ascent;
347 int descent;
348 short lbearing;
349 short rbearing;
350 XftFont *match;
351 FcFontSet *set;
352 FcPattern *pattern;
353 } Font;
354
355 /* Drawing Context */
356 typedef struct {
357 Color col[MAX(LEN(colorname), 256)];
358 Font font, bfont, ifont, ibfont;
359 GC gc;
360 } DC;
361
362 static void die(const char *, ...);
363 static void draw(void);
364 static void redraw(void);
365 static void drawregion(int, int, int, int);
366 static void execsh(void);
367 static void stty(void);
368 static void sigchld(int);
369 static void run(void);
370
371 static void csidump(void);
372 static void csihandle(void);
373 static void csiparse(void);
374 static void csireset(void);
375 static int eschandle(uchar);
376 static void strdump(void);
377 static void strhandle(void);
378 static void strparse(void);
379 static void strreset(void);
380
381 static int tattrset(int);
382 static void tprinter(char *, size_t);
383 static void tdumpsel(void);
384 static void tdumpline(int);
385 static void tdump(void);
386 static void tclearregion(int, int, int, int);
387 static void tcursor(int);
388 static void tdeletechar(int);
389 static void tdeleteline(int);
390 static void tinsertblank(int);
391 static void tinsertblankline(int);
392 static int tlinelen(int);
393 static void tmoveto(int, int);
394 static void tmoveato(int, int);
395 static void tnew(int, int);
396 static void tnewline(int);
397 static void tputtab(int);
398 static void tputc(Rune);
399 static void treset(void);
400 static void tresize(int, int);
401 static void tscrollup(int, int);
402 static void tscrolldown(int, int);
403 static void tsetattr(int *, int);
404 static void tsetchar(Rune, Glyph *, int, int);
405 static void tsetscroll(int, int);
406 static void tswapscreen(void);
407 static void tsetdirt(int, int);
408 static void tsetdirtattr(int);
409 static void tsetmode(int, int, int *, int);
410 static void tfulldirt(void);
411 static void techo(Rune);
412 static void tcontrolcode(uchar );
413 static void tdectest(char );
414 static int32_t tdefcolor(int *, int *, int);
415 static void tdeftran(char);
416 static inline int match(uint, uint);
417 static void ttynew(void);
418 static size_t ttyread(void);
419 static void ttyresize(void);
420 static void ttysend(char *, size_t);
421 static void ttywrite(const char *, size_t);
422 static void tstrsequence(uchar);
423
424 static inline ushort sixd_to_16bit(int);
425 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
426 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
427 static void xdrawglyph(Glyph, int, int);
428 static void xhints(void);
429 static void xclear(int, int, int, int);
430 static void xdrawcursor(void);
431 static void xinit(void);
432 static void xloadcols(void);
433 static int xsetcolorname(int, const char *);
434 static int xgeommasktogravity(int);
435 static int xloadfont(Font *, FcPattern *);
436 static void xloadfonts(char *, double);
437 static void xsettitle(char *);
438 static void xresettitle(void);
439 static void xsetpointermotion(int);
440 static void xseturgency(int);
441 static void xsetsel(char *, Time);
442 static void xtermclear(int, int, int, int);
443 static void xunloadfont(Font *);
444 static void xunloadfonts(void);
445 static void xresize(int, int);
446
447 static void expose(XEvent *);
448 static void visibility(XEvent *);
449 static void unmap(XEvent *);
450 static char *kmap(KeySym, uint);
451 static void kpress(XEvent *);
452 static void cmessage(XEvent *);
453 static void cresize(int, int);
454 static void resize(XEvent *);
455 static void focus(XEvent *);
456 static void brelease(XEvent *);
457 static void bpress(XEvent *);
458 static void bmotion(XEvent *);
459 static void propnotify(XEvent *);
460 static void selnotify(XEvent *);
461 static void selclear(XEvent *);
462 static void selrequest(XEvent *);
463
464 static void selinit(void);
465 static void selnormalize(void);
466 static inline int selected(int, int);
467 static char *getsel(void);
468 static void selcopy(Time);
469 static void selscroll(int, int);
470 static void selsnap(int *, int *, int);
471 static int x2col(int);
472 static int y2row(int);
473 static void getbuttoninfo(XEvent *);
474 static void mousereport(XEvent *);
475
476 static size_t utf8decode(char *, Rune *, size_t);
477 static Rune utf8decodebyte(char, size_t *);
478 static size_t utf8encode(Rune, char *);
479 static char utf8encodebyte(Rune, size_t);
480 static char *utf8strchr(char *s, Rune u);
481 static size_t utf8validate(Rune *, size_t);
482
483 static ssize_t xwrite(int, const char *, size_t);
484 static void *xmalloc(size_t);
485 static void *xrealloc(void *, size_t);
486 static char *xstrdup(char *);
487
488 static void usage(void);
489
490 static void (*handler[LASTEvent])(XEvent *) = {
491 [KeyPress] = kpress,
492 [ClientMessage] = cmessage,
493 [ConfigureNotify] = resize,
494 [VisibilityNotify] = visibility,
495 [UnmapNotify] = unmap,
496 [Expose] = expose,
497 [FocusIn] = focus,
498 [FocusOut] = focus,
499 [MotionNotify] = bmotion,
500 [ButtonPress] = bpress,
501 [ButtonRelease] = brelease,
502 /*
503 * Uncomment if you want the selection to disappear when you select something
504 * different in another window.
505 */
506 /* [SelectionClear] = selclear, */
507 [SelectionNotify] = selnotify,
508 /*
509 * PropertyNotify is only turned on when there is some INCR transfer happening
510 * for the selection retrieval.
511 */
512 [PropertyNotify] = propnotify,
513 [SelectionRequest] = selrequest,
514 };
515
516 /* Globals */
517 static DC dc;
518 static XWindow xw;
519 static Term term;
520 static CSIEscape csiescseq;
521 static STREscape strescseq;
522 static int cmdfd;
523 static pid_t pid;
524 static Selection sel;
525 static int iofd = 1;
526 static char **opt_cmd = NULL;
527 static char *opt_io = NULL;
528 static char *opt_title = NULL;
529 static char *opt_embed = NULL;
530 static char *opt_class = NULL;
531 static char *opt_font = NULL;
532 static char *opt_line = NULL;
533 static int oldbutton = 3; /* button event on startup: 3 = release */
534
535 static char *usedfont = NULL;
536 static double usedfontsize = 0;
537 static double defaultfontsize = 0;
538
539 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
540 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
541 static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
542 static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
543
544 /* Font Ring Cache */
545 enum {
546 FRC_NORMAL,
547 FRC_ITALIC,
548 FRC_BOLD,
549 FRC_ITALICBOLD
550 };
551
552 typedef struct {
553 XftFont *font;
554 int flags;
555 Rune unicodep;
556 } Fontcache;
557
558 /* Fontcache is an array now. A new font will be appended to the array. */
559 static Fontcache frc[16];
560 static int frclen = 0;
561
562 ssize_t
563 xwrite(int fd, const char *s, size_t len)
564 {
565 size_t aux = len;
566 ssize_t r;
567
568 while (len > 0) {
569 r = write(fd, s, len);
570 if (r < 0)
571 return r;
572 len -= r;
573 s += r;
574 }
575
576 return aux;
577 }
578
579 void *
580 xmalloc(size_t len)
581 {
582 void *p = malloc(len);
583
584 if (!p)
585 die("Out of memory\n");
586
587 return p;
588 }
589
590 void *
591 xrealloc(void *p, size_t len)
592 {
593 if ((p = realloc(p, len)) == NULL)
594 die("Out of memory\n");
595
596 return p;
597 }
598
599 char *
600 xstrdup(char *s)
601 {
602 if ((s = strdup(s)) == NULL)
603 die("Out of memory\n");
604
605 return s;
606 }
607
608 size_t
609 utf8decode(char *c, Rune *u, size_t clen)
610 {
611 size_t i, j, len, type;
612 Rune udecoded;
613
614 *u = UTF_INVALID;
615 if (!clen)
616 return 0;
617 udecoded = utf8decodebyte(c[0], &len);
618 if (!BETWEEN(len, 1, UTF_SIZ))
619 return 1;
620 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
621 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
622 if (type != 0)
623 return j;
624 }
625 if (j < len)
626 return 0;
627 *u = udecoded;
628 utf8validate(u, len);
629
630 return len;
631 }
632
633 Rune
634 utf8decodebyte(char c, size_t *i)
635 {
636 for (*i = 0; *i < LEN(utfmask); ++(*i))
637 if (((uchar)c & utfmask[*i]) == utfbyte[*i])
638 return (uchar)c & ~utfmask[*i];
639
640 return 0;
641 }
642
643 size_t
644 utf8encode(Rune u, char *c)
645 {
646 size_t len, i;
647
648 len = utf8validate(&u, 0);
649 if (len > UTF_SIZ)
650 return 0;
651
652 for (i = len - 1; i != 0; --i) {
653 c[i] = utf8encodebyte(u, 0);
654 u >>= 6;
655 }
656 c[0] = utf8encodebyte(u, len);
657
658 return len;
659 }
660
661 char
662 utf8encodebyte(Rune u, size_t i)
663 {
664 return utfbyte[i] | (u & ~utfmask[i]);
665 }
666
667 char *
668 utf8strchr(char *s, Rune u)
669 {
670 Rune r;
671 size_t i, j, len;
672
673 len = strlen(s);
674 for (i = 0, j = 0; i < len; i += j) {
675 if (!(j = utf8decode(&s[i], &r, len - i)))
676 break;
677 if (r == u)
678 return &(s[i]);
679 }
680
681 return NULL;
682 }
683
684 size_t
685 utf8validate(Rune *u, size_t i)
686 {
687 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
688 *u = UTF_INVALID;
689 for (i = 1; *u > utfmax[i]; ++i)
690 ;
691
692 return i;
693 }
694
695 void
696 selinit(void)
697 {
698 clock_gettime(CLOCK_MONOTONIC, &sel.tclick1);
699 clock_gettime(CLOCK_MONOTONIC, &sel.tclick2);
700 sel.mode = SEL_IDLE;
701 sel.snap = 0;
702 sel.ob.x = -1;
703 sel.primary = NULL;
704 sel.clipboard = NULL;
705 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
706 if (sel.xtarget == None)
707 sel.xtarget = XA_STRING;
708 }
709
710 int
711 x2col(int x)
712 {
713 x -= borderpx;
714 x /= xw.cw;
715
716 return LIMIT(x, 0, term.col-1);
717 }
718
719 int
720 y2row(int y)
721 {
722 y -= borderpx;
723 y /= xw.ch;
724
725 return LIMIT(y, 0, term.row-1);
726 }
727
728 int
729 tlinelen(int y)
730 {
731 int i = term.col;
732
733 if (term.line[y][i - 1].mode & ATTR_WRAP)
734 return i;
735
736 while (i > 0 && term.line[y][i - 1].u == ' ')
737 --i;
738
739 return i;
740 }
741
742 void
743 selnormalize(void)
744 {
745 int i;
746
747 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
748 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
749 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
750 } else {
751 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
752 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
753 }
754 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
755 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
756
757 selsnap(&sel.nb.x, &sel.nb.y, -1);
758 selsnap(&sel.ne.x, &sel.ne.y, +1);
759
760 /* expand selection over line breaks */
761 if (sel.type == SEL_RECTANGULAR)
762 return;
763 i = tlinelen(sel.nb.y);
764 if (i < sel.nb.x)
765 sel.nb.x = i;
766 if (tlinelen(sel.ne.y) <= sel.ne.x)
767 sel.ne.x = term.col - 1;
768 }
769
770 int
771 selected(int x, int y)
772 {
773 if (sel.mode == SEL_EMPTY)
774 return 0;
775
776 if (sel.type == SEL_RECTANGULAR)
777 return BETWEEN(y, sel.nb.y, sel.ne.y)
778 && BETWEEN(x, sel.nb.x, sel.ne.x);
779
780 return BETWEEN(y, sel.nb.y, sel.ne.y)
781 && (y != sel.nb.y || x >= sel.nb.x)
782 && (y != sel.ne.y || x <= sel.ne.x);
783 }
784
785 void
786 selsnap(int *x, int *y, int direction)
787 {
788 int newx, newy, xt, yt;
789 int delim, prevdelim;
790 Glyph *gp, *prevgp;
791
792 switch (sel.snap) {
793 case SNAP_WORD:
794 /*
795 * Snap around if the word wraps around at the end or
796 * beginning of a line.
797 */
798 prevgp = &term.line[*y][*x];
799 prevdelim = ISDELIM(prevgp->u);
800 for (;;) {
801 newx = *x + direction;
802 newy = *y;
803 if (!BETWEEN(newx, 0, term.col - 1)) {
804 newy += direction;
805 newx = (newx + term.col) % term.col;
806 if (!BETWEEN(newy, 0, term.row - 1))
807 break;
808
809 if (direction > 0)
810 yt = *y, xt = *x;
811 else
812 yt = newy, xt = newx;
813 if (!(term.line[yt][xt].mode & ATTR_WRAP))
814 break;
815 }
816
817 if (newx >= tlinelen(newy))
818 break;
819
820 gp = &term.line[newy][newx];
821 delim = ISDELIM(gp->u);
822 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
823 || (delim && gp->u != prevgp->u)))
824 break;
825
826 *x = newx;
827 *y = newy;
828 prevgp = gp;
829 prevdelim = delim;
830 }
831 break;
832 case SNAP_LINE:
833 /*
834 * Snap around if the the previous line or the current one
835 * has set ATTR_WRAP at its end. Then the whole next or
836 * previous line will be selected.
837 */
838 *x = (direction < 0) ? 0 : term.col - 1;
839 if (direction < 0) {
840 for (; *y > 0; *y += direction) {
841 if (!(term.line[*y-1][term.col-1].mode
842 & ATTR_WRAP)) {
843 break;
844 }
845 }
846 } else if (direction > 0) {
847 for (; *y < term.row-1; *y += direction) {
848 if (!(term.line[*y][term.col-1].mode
849 & ATTR_WRAP)) {
850 break;
851 }
852 }
853 }
854 break;
855 }
856 }
857
858 void
859 getbuttoninfo(XEvent *e)
860 {
861 int type;
862 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
863
864 sel.alt = IS_SET(MODE_ALTSCREEN);
865
866 sel.oe.x = x2col(e->xbutton.x);
867 sel.oe.y = y2row(e->xbutton.y);
868 selnormalize();
869
870 sel.type = SEL_REGULAR;
871 for (type = 1; type < LEN(selmasks); ++type) {
872 if (match(selmasks[type], state)) {
873 sel.type = type;
874 break;
875 }
876 }
877 }
878
879 void
880 mousereport(XEvent *e)
881 {
882 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
883 button = e->xbutton.button, state = e->xbutton.state,
884 len;
885 char buf[40];
886 static int ox, oy;
887
888 /* from urxvt */
889 if (e->xbutton.type == MotionNotify) {
890 if (x == ox && y == oy)
891 return;
892 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
893 return;
894 /* MOUSE_MOTION: no reporting if no button is pressed */
895 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
896 return;
897
898 button = oldbutton + 32;
899 ox = x;
900 oy = y;
901 } else {
902 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
903 button = 3;
904 } else {
905 button -= Button1;
906 if (button >= 3)
907 button += 64 - 3;
908 }
909 if (e->xbutton.type == ButtonPress) {
910 oldbutton = button;
911 ox = x;
912 oy = y;
913 } else if (e->xbutton.type == ButtonRelease) {
914 oldbutton = 3;
915 /* MODE_MOUSEX10: no button release reporting */
916 if (IS_SET(MODE_MOUSEX10))
917 return;
918 if (button == 64 || button == 65)
919 return;
920 }
921 }
922
923 if (!IS_SET(MODE_MOUSEX10)) {
924 button += ((state & ShiftMask ) ? 4 : 0)
925 + ((state & Mod4Mask ) ? 8 : 0)
926 + ((state & ControlMask) ? 16 : 0);
927 }
928
929 if (IS_SET(MODE_MOUSESGR)) {
930 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
931 button, x+1, y+1,
932 e->xbutton.type == ButtonRelease ? 'm' : 'M');
933 } else if (x < 223 && y < 223) {
934 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
935 32+button, 32+x+1, 32+y+1);
936 } else {
937 return;
938 }
939
940 ttywrite(buf, len);
941 }
942
943 void
944 bpress(XEvent *e)
945 {
946 struct timespec now;
947 MouseShortcut *ms;
948
949 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
950 mousereport(e);
951 return;
952 }
953
954 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
955 if (e->xbutton.button == ms->b
956 && match(ms->mask, e->xbutton.state)) {
957 ttysend(ms->s, strlen(ms->s));
958 return;
959 }
960 }
961
962 if (e->xbutton.button == Button1) {
963 clock_gettime(CLOCK_MONOTONIC, &now);
964
965 /* Clear previous selection, logically and visually. */
966 selclear(NULL);
967 sel.mode = SEL_EMPTY;
968 sel.type = SEL_REGULAR;
969 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
970 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
971
972 /*
973 * If the user clicks below predefined timeouts specific
974 * snapping behaviour is exposed.
975 */
976 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
977 sel.snap = SNAP_LINE;
978 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
979 sel.snap = SNAP_WORD;
980 } else {
981 sel.snap = 0;
982 }
983 selnormalize();
984
985 if (sel.snap != 0)
986 sel.mode = SEL_READY;
987 tsetdirt(sel.nb.y, sel.ne.y);
988 sel.tclick2 = sel.tclick1;
989 sel.tclick1 = now;
990 }
991 }
992
993 char *
994 getsel(void)
995 {
996 char *str, *ptr;
997 int y, bufsize, lastx, linelen;
998 Glyph *gp, *last;
999
1000 if (sel.ob.x == -1)
1001 return NULL;
1002
1003 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
1004 ptr = str = xmalloc(bufsize);
1005
1006 /* append every set & selected glyph to the selection */
1007 for (y = sel.nb.y; y <= sel.ne.y; y++) {
1008 if ((linelen = tlinelen(y)) == 0) {
1009 *ptr++ = '\n';
1010 continue;
1011 }
1012
1013 if (sel.type == SEL_RECTANGULAR) {
1014 gp = &term.line[y][sel.nb.x];
1015 lastx = sel.ne.x;
1016 } else {
1017 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
1018 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
1019 }
1020 last = &term.line[y][MIN(lastx, linelen-1)];
1021 while (last >= gp && last->u == ' ')
1022 --last;
1023
1024 for ( ; gp <= last; ++gp) {
1025 if (gp->mode & ATTR_WDUMMY)
1026 continue;
1027
1028 ptr += utf8encode(gp->u, ptr);
1029 }
1030
1031 /*
1032 * Copy and pasting of line endings is inconsistent
1033 * in the inconsistent terminal and GUI world.
1034 * The best solution seems like to produce '\n' when
1035 * something is copied from st and convert '\n' to
1036 * '\r', when something to be pasted is received by
1037 * st.
1038 * FIXME: Fix the computer world.
1039 */
1040 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
1041 *ptr++ = '\n';
1042 }
1043 *ptr = 0;
1044 return str;
1045 }
1046
1047 void
1048 selcopy(Time t)
1049 {
1050 xsetsel(getsel(), t);
1051 }
1052
1053 void
1054 propnotify(XEvent *e)
1055 {
1056 XPropertyEvent *xpev;
1057 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1058
1059 xpev = &e->xproperty;
1060 if (xpev->state == PropertyNewValue &&
1061 (xpev->atom == XA_PRIMARY ||
1062 xpev->atom == clipboard)) {
1063 selnotify(e);
1064 }
1065 }
1066
1067 void
1068 selnotify(XEvent *e)
1069 {
1070 ulong nitems, ofs, rem;
1071 int format;
1072 uchar *data, *last, *repl;
1073 Atom type, incratom, property;
1074
1075 incratom = XInternAtom(xw.dpy, "INCR", 0);
1076
1077 ofs = 0;
1078 if (e->type == SelectionNotify) {
1079 property = e->xselection.property;
1080 } else if(e->type == PropertyNotify) {
1081 property = e->xproperty.atom;
1082 } else {
1083 return;
1084 }
1085 if (property == None)
1086 return;
1087
1088 do {
1089 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
1090 BUFSIZ/4, False, AnyPropertyType,
1091 &type, &format, &nitems, &rem,
1092 &data)) {
1093 fprintf(stderr, "Clipboard allocation failed\n");
1094 return;
1095 }
1096
1097 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
1098 /*
1099 * If there is some PropertyNotify with no data, then
1100 * this is the signal of the selection owner that all
1101 * data has been transferred. We won't need to receive
1102 * PropertyNotify events anymore.
1103 */
1104 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
1105 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1106 &xw.attrs);
1107 }
1108
1109 if (type == incratom) {
1110 /*
1111 * Activate the PropertyNotify events so we receive
1112 * when the selection owner does send us the next
1113 * chunk of data.
1114 */
1115 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
1116 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1117 &xw.attrs);
1118
1119 /*
1120 * Deleting the property is the transfer start signal.
1121 */
1122 XDeleteProperty(xw.dpy, xw.win, (int)property);
1123 continue;
1124 }
1125
1126 /*
1127 * As seen in getsel:
1128 * Line endings are inconsistent in the terminal and GUI world
1129 * copy and pasting. When receiving some selection data,
1130 * replace all '\n' with '\r'.
1131 * FIXME: Fix the computer world.
1132 */
1133 repl = data;
1134 last = data + nitems * format / 8;
1135 while ((repl = memchr(repl, '\n', last - repl))) {
1136 *repl++ = '\r';
1137 }
1138
1139 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
1140 ttywrite("\033[200~", 6);
1141 ttysend((char *)data, nitems * format / 8);
1142 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
1143 ttywrite("\033[201~", 6);
1144 XFree(data);
1145 /* number of 32-bit chunks returned */
1146 ofs += nitems * format / 32;
1147 } while (rem > 0);
1148
1149 /*
1150 * Deleting the property again tells the selection owner to send the
1151 * next data chunk in the property.
1152 */
1153 if (e->type == PropertyNotify)
1154 XDeleteProperty(xw.dpy, xw.win, (int)property);
1155 }
1156
1157 void
1158 selpaste(const Arg *dummy)
1159 {
1160 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1161 xw.win, CurrentTime);
1162 }
1163
1164 void
1165 clipcopy(const Arg *dummy)
1166 {
1167 Atom clipboard;
1168
1169 if (sel.clipboard != NULL)
1170 free(sel.clipboard);
1171
1172 if (sel.primary != NULL) {
1173 sel.clipboard = xstrdup(sel.primary);
1174 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1175 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1176 }
1177 }
1178
1179 void
1180 clippaste(const Arg *dummy)
1181 {
1182 Atom clipboard;
1183
1184 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1185 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1186 xw.win, CurrentTime);
1187 }
1188
1189 void
1190 selclear(XEvent *e)
1191 {
1192 if (sel.ob.x == -1)
1193 return;
1194 sel.mode = SEL_IDLE;
1195 sel.ob.x = -1;
1196 tsetdirt(sel.nb.y, sel.ne.y);
1197 }
1198
1199 void
1200 selrequest(XEvent *e)
1201 {
1202 XSelectionRequestEvent *xsre;
1203 XSelectionEvent xev;
1204 Atom xa_targets, string, clipboard;
1205 char *seltext;
1206
1207 xsre = (XSelectionRequestEvent *) e;
1208 xev.type = SelectionNotify;
1209 xev.requestor = xsre->requestor;
1210 xev.selection = xsre->selection;
1211 xev.target = xsre->target;
1212 xev.time = xsre->time;
1213 if (xsre->property == None)
1214 xsre->property = xsre->target;
1215
1216 /* reject */
1217 xev.property = None;
1218
1219 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1220 if (xsre->target == xa_targets) {
1221 /* respond with the supported type */
1222 string = sel.xtarget;
1223 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1224 XA_ATOM, 32, PropModeReplace,
1225 (uchar *) &string, 1);
1226 xev.property = xsre->property;
1227 } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1228 /*
1229 * xith XA_STRING non ascii characters may be incorrect in the
1230 * requestor. It is not our problem, use utf8.
1231 */
1232 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1233 if (xsre->selection == XA_PRIMARY) {
1234 seltext = sel.primary;
1235 } else if (xsre->selection == clipboard) {
1236 seltext = sel.clipboard;
1237 } else {
1238 fprintf(stderr,
1239 "Unhandled clipboard selection 0x%lx\n",
1240 xsre->selection);
1241 return;
1242 }
1243 if (seltext != NULL) {
1244 XChangeProperty(xsre->display, xsre->requestor,
1245 xsre->property, xsre->target,
1246 8, PropModeReplace,
1247 (uchar *)seltext, strlen(seltext));
1248 xev.property = xsre->property;
1249 }
1250 }
1251
1252 /* all done, send a notification to the listener */
1253 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
1254 fprintf(stderr, "Error sending SelectionNotify event\n");
1255 }
1256
1257 void
1258 xsetsel(char *str, Time t)
1259 {
1260 free(sel.primary);
1261 sel.primary = str;
1262
1263 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1264 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1265 selclear(0);
1266 }
1267
1268 void
1269 brelease(XEvent *e)
1270 {
1271 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1272 mousereport(e);
1273 return;
1274 }
1275
1276 if (e->xbutton.button == Button2) {
1277 selpaste(NULL);
1278 } else if (e->xbutton.button == Button1) {
1279 if (sel.mode == SEL_READY) {
1280 getbuttoninfo(e);
1281 selcopy(e->xbutton.time);
1282 } else
1283 selclear(NULL);
1284 sel.mode = SEL_IDLE;
1285 tsetdirt(sel.nb.y, sel.ne.y);
1286 }
1287 }
1288
1289 void
1290 bmotion(XEvent *e)
1291 {
1292 int oldey, oldex, oldsby, oldsey;
1293
1294 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1295 mousereport(e);
1296 return;
1297 }
1298
1299 if (!sel.mode)
1300 return;
1301
1302 sel.mode = SEL_READY;
1303 oldey = sel.oe.y;
1304 oldex = sel.oe.x;
1305 oldsby = sel.nb.y;
1306 oldsey = sel.ne.y;
1307 getbuttoninfo(e);
1308
1309 if (oldey != sel.oe.y || oldex != sel.oe.x)
1310 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1311 }
1312
1313 void
1314 die(const char *errstr, ...)
1315 {
1316 va_list ap;
1317
1318 va_start(ap, errstr);
1319 vfprintf(stderr, errstr, ap);
1320 va_end(ap);
1321 exit(1);
1322 }
1323
1324 void
1325 execsh(void)
1326 {
1327 char **args, *sh, *prog;
1328 const struct passwd *pw;
1329 char buf[sizeof(long) * 8 + 1];
1330
1331 errno = 0;
1332 if ((pw = getpwuid(getuid())) == NULL) {
1333 if (errno)
1334 die("getpwuid:%s\n", strerror(errno));
1335 else
1336 die("who are you?\n");
1337 }
1338
1339 if ((sh = getenv("SHELL")) == NULL)
1340 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1341
1342 if (opt_cmd)
1343 prog = opt_cmd[0];
1344 else if (utmp)
1345 prog = utmp;
1346 else
1347 prog = sh;
1348 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1349
1350 snprintf(buf, sizeof(buf), "%lu", xw.win);
1351
1352 unsetenv("COLUMNS");
1353 unsetenv("LINES");
1354 unsetenv("TERMCAP");
1355 setenv("LOGNAME", pw->pw_name, 1);
1356 setenv("USER", pw->pw_name, 1);
1357 setenv("SHELL", sh, 1);
1358 setenv("HOME", pw->pw_dir, 1);
1359 setenv("TERM", termname, 1);
1360 setenv("WINDOWID", buf, 1);
1361
1362 signal(SIGCHLD, SIG_DFL);
1363 signal(SIGHUP, SIG_DFL);
1364 signal(SIGINT, SIG_DFL);
1365 signal(SIGQUIT, SIG_DFL);
1366 signal(SIGTERM, SIG_DFL);
1367 signal(SIGALRM, SIG_DFL);
1368
1369 execvp(prog, args);
1370 _exit(1);
1371 }
1372
1373 void
1374 sigchld(int a)
1375 {
1376 int stat;
1377 pid_t p;
1378
1379 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
1380 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1381
1382 if (pid != p)
1383 return;
1384
1385 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
1386 die("child finished with error '%d'\n", stat);
1387 exit(0);
1388 }
1389
1390
1391 void
1392 stty(void)
1393 {
1394 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1395 size_t n, siz;
1396
1397 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
1398 die("incorrect stty parameters\n");
1399 memcpy(cmd, stty_args, n);
1400 q = cmd + n;
1401 siz = sizeof(cmd) - n;
1402 for (p = opt_cmd; p && (s = *p); ++p) {
1403 if ((n = strlen(s)) > siz-1)
1404 die("stty parameter length too long\n");
1405 *q++ = ' ';
1406 q = memcpy(q, s, n);
1407 q += n;
1408 siz-= n + 1;
1409 }
1410 *q = '\0';
1411 if (system(cmd) != 0)
1412 perror("Couldn't call stty");
1413 }
1414
1415 void
1416 ttynew(void)
1417 {
1418 int m, s;
1419 struct winsize w = {term.row, term.col, 0, 0};
1420
1421 if (opt_io) {
1422 term.mode |= MODE_PRINT;
1423 iofd = (!strcmp(opt_io, "-")) ?
1424 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
1425 if (iofd < 0) {
1426 fprintf(stderr, "Error opening %s:%s\n",
1427 opt_io, strerror(errno));
1428 }
1429 }
1430
1431 if (opt_line) {
1432 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
1433 die("open line failed: %s\n", strerror(errno));
1434 dup2(cmdfd, 0);
1435 stty();
1436 return;
1437 }
1438
1439 /* seems to work fine on linux, openbsd and freebsd */
1440 if (openpty(&m, &s, NULL, NULL, &w) < 0)
1441 die("openpty failed: %s\n", strerror(errno));
1442
1443 switch (pid = fork()) {
1444 case -1:
1445 die("fork failed\n");
1446 break;
1447 case 0:
1448 close(iofd);
1449 setsid(); /* create a new process group */
1450 dup2(s, 0);
1451 dup2(s, 1);
1452 dup2(s, 2);
1453 if (ioctl(s, TIOCSCTTY, NULL) < 0)
1454 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1455 close(s);
1456 close(m);
1457 execsh();
1458 break;
1459 default:
1460 close(s);
1461 cmdfd = m;
1462 signal(SIGCHLD, sigchld);
1463 break;
1464 }
1465 }
1466
1467 size_t
1468 ttyread(void)
1469 {
1470 static char buf[BUFSIZ];
1471 static int buflen = 0;
1472 char *ptr;
1473 int charsize; /* size of utf8 char in bytes */
1474 Rune unicodep;
1475 int ret;
1476
1477 /* append read bytes to unprocessed bytes */
1478 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1479 die("Couldn't read from shell: %s\n", strerror(errno));
1480
1481 /* process every complete utf8 char */
1482 buflen += ret;
1483 ptr = buf;
1484 while ((charsize = utf8decode(ptr, &unicodep, buflen))) {
1485 tputc(unicodep);
1486 ptr += charsize;
1487 buflen -= charsize;
1488 }
1489
1490 /* keep any uncomplete utf8 char for the next call */
1491 memmove(buf, ptr, buflen);
1492
1493 return ret;
1494 }
1495
1496 void
1497 ttywrite(const char *s, size_t n)
1498 {
1499 fd_set wfd, rfd;
1500 ssize_t r;
1501 size_t lim = 256;
1502
1503 /*
1504 * Remember that we are using a pty, which might be a modem line.
1505 * Writing too much will clog the line. That's why we are doing this
1506 * dance.
1507 * FIXME: Migrate the world to Plan 9.
1508 */
1509 while (n > 0) {
1510 FD_ZERO(&wfd);
1511 FD_ZERO(&rfd);
1512 FD_SET(cmdfd, &wfd);
1513 FD_SET(cmdfd, &rfd);
1514
1515 /* Check if we can write. */
1516 if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
1517 if (errno == EINTR)
1518 continue;
1519 die("select failed: %s\n", strerror(errno));
1520 }
1521 if (FD_ISSET(cmdfd, &wfd)) {
1522 /*
1523 * Only write the bytes written by ttywrite() or the
1524 * default of 256. This seems to be a reasonable value
1525 * for a serial line. Bigger values might clog the I/O.
1526 */
1527 if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
1528 goto write_error;
1529 if (r < n) {
1530 /*
1531 * We weren't able to write out everything.
1532 * This means the buffer is getting full
1533 * again. Empty it.
1534 */
1535 if (n < lim)
1536 lim = ttyread();
1537 n -= r;
1538 s += r;
1539 } else {
1540 /* All bytes have been written. */
1541 break;
1542 }
1543 }
1544 if (FD_ISSET(cmdfd, &rfd))
1545 lim = ttyread();
1546 }
1547 return;
1548
1549 write_error:
1550 die("write error on tty: %s\n", strerror(errno));
1551 }
1552
1553 void
1554 ttysend(char *s, size_t n)
1555 {
1556 int len;
1557 Rune u;
1558
1559 ttywrite(s, n);
1560 if (IS_SET(MODE_ECHO))
1561 while ((len = utf8decode(s, &u, n)) > 0) {
1562 techo(u);
1563 n -= len;
1564 s += len;
1565 }
1566 }
1567
1568 void
1569 ttyresize(void)
1570 {
1571 struct winsize w;
1572
1573 w.ws_row = term.row;
1574 w.ws_col = term.col;
1575 w.ws_xpixel = xw.tw;
1576 w.ws_ypixel = xw.th;
1577 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1578 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1579 }
1580
1581 int
1582 tattrset(int attr)
1583 {
1584 int i, j;
1585
1586 for (i = 0; i < term.row-1; i++) {
1587 for (j = 0; j < term.col-1; j++) {
1588 if (term.line[i][j].mode & attr)
1589 return 1;
1590 }
1591 }
1592
1593 return 0;
1594 }
1595
1596 void
1597 tsetdirt(int top, int bot)
1598 {
1599 int i;
1600
1601 LIMIT(top, 0, term.row-1);
1602 LIMIT(bot, 0, term.row-1);
1603
1604 for (i = top; i <= bot; i++)
1605 term.dirty[i] = 1;
1606 }
1607
1608 void
1609 tsetdirtattr(int attr)
1610 {
1611 int i, j;
1612
1613 for (i = 0; i < term.row-1; i++) {
1614 for (j = 0; j < term.col-1; j++) {
1615 if (term.line[i][j].mode & attr) {
1616 tsetdirt(i, i);
1617 break;
1618 }
1619 }
1620 }
1621 }
1622
1623 void
1624 tfulldirt(void)
1625 {
1626 tsetdirt(0, term.row-1);
1627 }
1628
1629 void
1630 tcursor(int mode)
1631 {
1632 static TCursor c[2];
1633 int alt = IS_SET(MODE_ALTSCREEN);
1634
1635 if (mode == CURSOR_SAVE) {
1636 c[alt] = term.c;
1637 } else if (mode == CURSOR_LOAD) {
1638 term.c = c[alt];
1639 tmoveto(c[alt].x, c[alt].y);
1640 }
1641 }
1642
1643 void
1644 treset(void)
1645 {
1646 uint i;
1647
1648 term.c = (TCursor){{
1649 .mode = ATTR_NULL,
1650 .fg = defaultfg,
1651 .bg = defaultbg
1652 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1653
1654 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1655 for (i = tabspaces; i < term.col; i += tabspaces)
1656 term.tabs[i] = 1;
1657 term.top = 0;
1658 term.bot = term.row - 1;
1659 term.mode = MODE_WRAP;
1660 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1661 term.charset = 0;
1662
1663 for (i = 0; i < 2; i++) {
1664 tmoveto(0, 0);
1665 tcursor(CURSOR_SAVE);
1666 tclearregion(0, 0, term.col-1, term.row-1);
1667 tswapscreen();
1668 }
1669 }
1670
1671 void
1672 tnew(int col, int row)
1673 {
1674 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1675 tresize(col, row);
1676 term.numlock = 1;
1677
1678 treset();
1679 }
1680
1681 void
1682 tswapscreen(void)
1683 {
1684 Line *tmp = term.line;
1685
1686 term.line = term.alt;
1687 term.alt = tmp;
1688 term.mode ^= MODE_ALTSCREEN;
1689 tfulldirt();
1690 }
1691
1692 void
1693 tscrolldown(int orig, int n)
1694 {
1695 int i;
1696 Line temp;
1697
1698 LIMIT(n, 0, term.bot-orig+1);
1699
1700 tsetdirt(orig, term.bot-n);
1701 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1702
1703 for (i = term.bot; i >= orig+n; i--) {
1704 temp = term.line[i];
1705 term.line[i] = term.line[i-n];
1706 term.line[i-n] = temp;
1707 }
1708
1709 selscroll(orig, n);
1710 }
1711
1712 void
1713 tscrollup(int orig, int n)
1714 {
1715 int i;
1716 Line temp;
1717
1718 LIMIT(n, 0, term.bot-orig+1);
1719
1720 tclearregion(0, orig, term.col-1, orig+n-1);
1721 tsetdirt(orig+n, term.bot);
1722
1723 for (i = orig; i <= term.bot-n; i++) {
1724 temp = term.line[i];
1725 term.line[i] = term.line[i+n];
1726 term.line[i+n] = temp;
1727 }
1728
1729 selscroll(orig, -n);
1730 }
1731
1732 void
1733 selscroll(int orig, int n)
1734 {
1735 if (sel.ob.x == -1)
1736 return;
1737
1738 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1739 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1740 selclear(NULL);
1741 return;
1742 }
1743 if (sel.type == SEL_RECTANGULAR) {
1744 if (sel.ob.y < term.top)
1745 sel.ob.y = term.top;
1746 if (sel.oe.y > term.bot)
1747 sel.oe.y = term.bot;
1748 } else {
1749 if (sel.ob.y < term.top) {
1750 sel.ob.y = term.top;
1751 sel.ob.x = 0;
1752 }
1753 if (sel.oe.y > term.bot) {
1754 sel.oe.y = term.bot;
1755 sel.oe.x = term.col;
1756 }
1757 }
1758 selnormalize();
1759 }
1760 }
1761
1762 void
1763 tnewline(int first_col)
1764 {
1765 int y = term.c.y;
1766
1767 if (y == term.bot) {
1768 tscrollup(term.top, 1);
1769 } else {
1770 y++;
1771 }
1772 tmoveto(first_col ? 0 : term.c.x, y);
1773 }
1774
1775 void
1776 csiparse(void)
1777 {
1778 char *p = csiescseq.buf, *np;
1779 long int v;
1780
1781 csiescseq.narg = 0;
1782 if (*p == '?') {
1783 csiescseq.priv = 1;
1784 p++;
1785 }
1786
1787 csiescseq.buf[csiescseq.len] = '\0';
1788 while (p < csiescseq.buf+csiescseq.len) {
1789 np = NULL;
1790 v = strtol(p, &np, 10);
1791 if (np == p)
1792 v = 0;
1793 if (v == LONG_MAX || v == LONG_MIN)
1794 v = -1;
1795 csiescseq.arg[csiescseq.narg++] = v;
1796 p = np;
1797 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1798 break;
1799 p++;
1800 }
1801 csiescseq.mode[0] = *p++;
1802 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1803 }
1804
1805 /* for absolute user moves, when decom is set */
1806 void
1807 tmoveato(int x, int y)
1808 {
1809 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1810 }
1811
1812 void
1813 tmoveto(int x, int y)
1814 {
1815 int miny, maxy;
1816
1817 if (term.c.state & CURSOR_ORIGIN) {
1818 miny = term.top;
1819 maxy = term.bot;
1820 } else {
1821 miny = 0;
1822 maxy = term.row - 1;
1823 }
1824 term.c.state &= ~CURSOR_WRAPNEXT;
1825 term.c.x = LIMIT(x, 0, term.col-1);
1826 term.c.y = LIMIT(y, miny, maxy);
1827 }
1828
1829 void
1830 tsetchar(Rune u, Glyph *attr, int x, int y)
1831 {
1832 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1833 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1834 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1835 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1836 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1837 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1838 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1839 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1840 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1841 };
1842
1843 /*
1844 * The table is proudly stolen from rxvt.
1845 */
1846 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1847 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1848 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1849
1850 if (term.line[y][x].mode & ATTR_WIDE) {
1851 if (x+1 < term.col) {
1852 term.line[y][x+1].u = ' ';
1853 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1854 }
1855 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1856 term.line[y][x-1].u = ' ';
1857 term.line[y][x-1].mode &= ~ATTR_WIDE;
1858 }
1859
1860 term.dirty[y] = 1;
1861 term.line[y][x] = *attr;
1862 term.line[y][x].u = u;
1863 }
1864
1865 void
1866 tclearregion(int x1, int y1, int x2, int y2)
1867 {
1868 int x, y, temp;
1869 Glyph *gp;
1870
1871 if (x1 > x2)
1872 temp = x1, x1 = x2, x2 = temp;
1873 if (y1 > y2)
1874 temp = y1, y1 = y2, y2 = temp;
1875
1876 LIMIT(x1, 0, term.col-1);
1877 LIMIT(x2, 0, term.col-1);
1878 LIMIT(y1, 0, term.row-1);
1879 LIMIT(y2, 0, term.row-1);
1880
1881 for (y = y1; y <= y2; y++) {
1882 term.dirty[y] = 1;
1883 for (x = x1; x <= x2; x++) {
1884 gp = &term.line[y][x];
1885 if (selected(x, y))
1886 selclear(NULL);
1887 gp->fg = term.c.attr.fg;
1888 gp->bg = term.c.attr.bg;
1889 gp->mode = 0;
1890 gp->u = ' ';
1891 }
1892 }
1893 }
1894
1895 void
1896 tdeletechar(int n)
1897 {
1898 int dst, src, size;
1899 Glyph *line;
1900
1901 LIMIT(n, 0, term.col - term.c.x);
1902
1903 dst = term.c.x;
1904 src = term.c.x + n;
1905 size = term.col - src;
1906 line = term.line[term.c.y];
1907
1908 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1909 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1910 }
1911
1912 void
1913 tinsertblank(int n)
1914 {
1915 int dst, src, size;
1916 Glyph *line;
1917
1918 LIMIT(n, 0, term.col - term.c.x);
1919
1920 dst = term.c.x + n;
1921 src = term.c.x;
1922 size = term.col - dst;
1923 line = term.line[term.c.y];
1924
1925 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1926 tclearregion(src, term.c.y, dst - 1, term.c.y);
1927 }
1928
1929 void
1930 tinsertblankline(int n)
1931 {
1932 if (BETWEEN(term.c.y, term.top, term.bot))
1933 tscrolldown(term.c.y, n);
1934 }
1935
1936 void
1937 tdeleteline(int n)
1938 {
1939 if (BETWEEN(term.c.y, term.top, term.bot))
1940 tscrollup(term.c.y, n);
1941 }
1942
1943 int32_t
1944 tdefcolor(int *attr, int *npar, int l)
1945 {
1946 int32_t idx = -1;
1947 uint r, g, b;
1948
1949 switch (attr[*npar + 1]) {
1950 case 2: /* direct color in RGB space */
1951 if (*npar + 4 >= l) {
1952 fprintf(stderr,
1953 "erresc(38): Incorrect number of parameters (%d)\n",
1954 *npar);
1955 break;
1956 }
1957 r = attr[*npar + 2];
1958 g = attr[*npar + 3];
1959 b = attr[*npar + 4];
1960 *npar += 4;
1961 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1962 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1963 r, g, b);
1964 else
1965 idx = TRUECOLOR(r, g, b);
1966 break;
1967 case 5: /* indexed color */
1968 if (*npar + 2 >= l) {
1969 fprintf(stderr,
1970 "erresc(38): Incorrect number of parameters (%d)\n",
1971 *npar);
1972 break;
1973 }
1974 *npar += 2;
1975 if (!BETWEEN(attr[*npar], 0, 255))
1976 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1977 else
1978 idx = attr[*npar];
1979 break;
1980 case 0: /* implemented defined (only foreground) */
1981 case 1: /* transparent */
1982 case 3: /* direct color in CMY space */
1983 case 4: /* direct color in CMYK space */
1984 default:
1985 fprintf(stderr,
1986 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1987 break;
1988 }
1989
1990 return idx;
1991 }
1992
1993 void
1994 tsetattr(int *attr, int l)
1995 {
1996 int i;
1997 int32_t idx;
1998
1999 for (i = 0; i < l; i++) {
2000 switch (attr[i]) {
2001 case 0:
2002 term.c.attr.mode &= ~(
2003 ATTR_BOLD |
2004 ATTR_FAINT |
2005 ATTR_ITALIC |
2006 ATTR_UNDERLINE |
2007 ATTR_BLINK |
2008 ATTR_REVERSE |
2009 ATTR_INVISIBLE |
2010 ATTR_STRUCK );
2011 term.c.attr.fg = defaultfg;
2012 term.c.attr.bg = defaultbg;
2013 break;
2014 case 1:
2015 term.c.attr.mode |= ATTR_BOLD;
2016 break;
2017 case 2:
2018 term.c.attr.mode |= ATTR_FAINT;
2019 break;
2020 case 3:
2021 term.c.attr.mode |= ATTR_ITALIC;
2022 break;
2023 case 4:
2024 term.c.attr.mode |= ATTR_UNDERLINE;
2025 break;
2026 case 5: /* slow blink */
2027 /* FALLTHROUGH */
2028 case 6: /* rapid blink */
2029 term.c.attr.mode |= ATTR_BLINK;
2030 break;
2031 case 7:
2032 term.c.attr.mode |= ATTR_REVERSE;
2033 break;
2034 case 8:
2035 term.c.attr.mode |= ATTR_INVISIBLE;
2036 break;
2037 case 9:
2038 term.c.attr.mode |= ATTR_STRUCK;
2039 break;
2040 case 22:
2041 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
2042 break;
2043 case 23:
2044 term.c.attr.mode &= ~ATTR_ITALIC;
2045 break;
2046 case 24:
2047 term.c.attr.mode &= ~ATTR_UNDERLINE;
2048 break;
2049 case 25:
2050 term.c.attr.mode &= ~ATTR_BLINK;
2051 break;
2052 case 27:
2053 term.c.attr.mode &= ~ATTR_REVERSE;
2054 break;
2055 case 28:
2056 term.c.attr.mode &= ~ATTR_INVISIBLE;
2057 break;
2058 case 29:
2059 term.c.attr.mode &= ~ATTR_STRUCK;
2060 break;
2061 case 38:
2062 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2063 term.c.attr.fg = idx;
2064 break;
2065 case 39:
2066 term.c.attr.fg = defaultfg;
2067 break;
2068 case 48:
2069 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2070 term.c.attr.bg = idx;
2071 break;
2072 case 49:
2073 term.c.attr.bg = defaultbg;
2074 break;
2075 default:
2076 if (BETWEEN(attr[i], 30, 37)) {
2077 term.c.attr.fg = attr[i] - 30;
2078 } else if (BETWEEN(attr[i], 40, 47)) {
2079 term.c.attr.bg = attr[i] - 40;
2080 } else if (BETWEEN(attr[i], 90, 97)) {
2081 term.c.attr.fg = attr[i] - 90 + 8;
2082 } else if (BETWEEN(attr[i], 100, 107)) {
2083 term.c.attr.bg = attr[i] - 100 + 8;
2084 } else {
2085 fprintf(stderr,
2086 "erresc(default): gfx attr %d unknown\n",
2087 attr[i]), csidump();
2088 }
2089 break;
2090 }
2091 }
2092 }
2093
2094 void
2095 tsetscroll(int t, int b)
2096 {
2097 int temp;
2098
2099 LIMIT(t, 0, term.row-1);
2100 LIMIT(b, 0, term.row-1);
2101 if (t > b) {
2102 temp = t;
2103 t = b;
2104 b = temp;
2105 }
2106 term.top = t;
2107 term.bot = b;
2108 }
2109
2110 void
2111 tsetmode(int priv, int set, int *args, int narg)
2112 {
2113 int *lim, mode;
2114 int alt;
2115
2116 for (lim = args + narg; args < lim; ++args) {
2117 if (priv) {
2118 switch (*args) {
2119 case 1: /* DECCKM -- Cursor key */
2120 MODBIT(term.mode, set, MODE_APPCURSOR);
2121 break;
2122 case 5: /* DECSCNM -- Reverse video */
2123 mode = term.mode;
2124 MODBIT(term.mode, set, MODE_REVERSE);
2125 if (mode != term.mode)
2126 redraw();
2127 break;
2128 case 6: /* DECOM -- Origin */
2129 MODBIT(term.c.state, set, CURSOR_ORIGIN);
2130 tmoveato(0, 0);
2131 break;
2132 case 7: /* DECAWM -- Auto wrap */
2133 MODBIT(term.mode, set, MODE_WRAP);
2134 break;
2135 case 0: /* Error (IGNORED) */
2136 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
2137 case 3: /* DECCOLM -- Column (IGNORED) */
2138 case 4: /* DECSCLM -- Scroll (IGNORED) */
2139 case 8: /* DECARM -- Auto repeat (IGNORED) */
2140 case 18: /* DECPFF -- Printer feed (IGNORED) */
2141 case 19: /* DECPEX -- Printer extent (IGNORED) */
2142 case 42: /* DECNRCM -- National characters (IGNORED) */
2143 case 12: /* att610 -- Start blinking cursor (IGNORED) */
2144 break;
2145 case 25: /* DECTCEM -- Text Cursor Enable Mode */
2146 MODBIT(term.mode, !set, MODE_HIDE);
2147 break;
2148 case 9: /* X10 mouse compatibility mode */
2149 xsetpointermotion(0);
2150 MODBIT(term.mode, 0, MODE_MOUSE);
2151 MODBIT(term.mode, set, MODE_MOUSEX10);
2152 break;
2153 case 1000: /* 1000: report button press */
2154 xsetpointermotion(0);
2155 MODBIT(term.mode, 0, MODE_MOUSE);
2156 MODBIT(term.mode, set, MODE_MOUSEBTN);
2157 break;
2158 case 1002: /* 1002: report motion on button press */
2159 xsetpointermotion(0);
2160 MODBIT(term.mode, 0, MODE_MOUSE);
2161 MODBIT(term.mode, set, MODE_MOUSEMOTION);
2162 break;
2163 case 1003: /* 1003: enable all mouse motions */
2164 xsetpointermotion(set);
2165 MODBIT(term.mode, 0, MODE_MOUSE);
2166 MODBIT(term.mode, set, MODE_MOUSEMANY);
2167 break;
2168 case 1004: /* 1004: send focus events to tty */
2169 MODBIT(term.mode, set, MODE_FOCUS);
2170 break;
2171 case 1006: /* 1006: extended reporting mode */
2172 MODBIT(term.mode, set, MODE_MOUSESGR);
2173 break;
2174 case 1034:
2175 MODBIT(term.mode, set, MODE_8BIT);
2176 break;
2177 case 1049: /* swap screen & set/restore cursor as xterm */
2178 if (!allowaltscreen)
2179 break;
2180 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2181 /* FALLTHROUGH */
2182 case 47: /* swap screen */
2183 case 1047:
2184 if (!allowaltscreen)
2185 break;
2186 alt = IS_SET(MODE_ALTSCREEN);
2187 if (alt) {
2188 tclearregion(0, 0, term.col-1,
2189 term.row-1);
2190 }
2191 if (set ^ alt) /* set is always 1 or 0 */
2192 tswapscreen();
2193 if (*args != 1049)
2194 break;
2195 /* FALLTHROUGH */
2196 case 1048:
2197 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2198 break;
2199 case 2004: /* 2004: bracketed paste mode */
2200 MODBIT(term.mode, set, MODE_BRCKTPASTE);
2201 break;
2202 /* Not implemented mouse modes. See comments there. */
2203 case 1001: /* mouse highlight mode; can hang the
2204 terminal by design when implemented. */
2205 case 1005: /* UTF-8 mouse mode; will confuse
2206 applications not supporting UTF-8
2207 and luit. */
2208 case 1015: /* urxvt mangled mouse mode; incompatible
2209 and can be mistaken for other control
2210 codes. */
2211 default:
2212 fprintf(stderr,
2213 "erresc: unknown private set/reset mode %d\n",
2214 *args);
2215 break;
2216 }
2217 } else {
2218 switch (*args) {
2219 case 0: /* Error (IGNORED) */
2220 break;
2221 case 2: /* KAM -- keyboard action */
2222 MODBIT(term.mode, set, MODE_KBDLOCK);
2223 break;
2224 case 4: /* IRM -- Insertion-replacement */
2225 MODBIT(term.mode, set, MODE_INSERT);
2226 break;
2227 case 12: /* SRM -- Send/Receive */
2228 MODBIT(term.mode, !set, MODE_ECHO);
2229 break;
2230 case 20: /* LNM -- Linefeed/new line */
2231 MODBIT(term.mode, set, MODE_CRLF);
2232 break;
2233 default:
2234 fprintf(stderr,
2235 "erresc: unknown set/reset mode %d\n",
2236 *args);
2237 break;
2238 }
2239 }
2240 }
2241 }
2242
2243 void
2244 csihandle(void)
2245 {
2246 char buf[40];
2247 int len;
2248
2249 switch (csiescseq.mode[0]) {
2250 default:
2251 unknown:
2252 fprintf(stderr, "erresc: unknown csi ");
2253 csidump();
2254 /* die(""); */
2255 break;
2256 case '@': /* ICH -- Insert <n> blank char */
2257 DEFAULT(csiescseq.arg[0], 1);
2258 tinsertblank(csiescseq.arg[0]);
2259 break;
2260 case 'A': /* CUU -- Cursor <n> Up */
2261 DEFAULT(csiescseq.arg[0], 1);
2262 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2263 break;
2264 case 'B': /* CUD -- Cursor <n> Down */
2265 case 'e': /* VPR --Cursor <n> Down */
2266 DEFAULT(csiescseq.arg[0], 1);
2267 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2268 break;
2269 case 'i': /* MC -- Media Copy */
2270 switch (csiescseq.arg[0]) {
2271 case 0:
2272 tdump();
2273 break;
2274 case 1:
2275 tdumpline(term.c.y);
2276 break;
2277 case 2:
2278 tdumpsel();
2279 break;
2280 case 4:
2281 term.mode &= ~MODE_PRINT;
2282 break;
2283 case 5:
2284 term.mode |= MODE_PRINT;
2285 break;
2286 }
2287 break;
2288 case 'c': /* DA -- Device Attributes */
2289 if (csiescseq.arg[0] == 0)
2290 ttywrite(vtiden, sizeof(vtiden) - 1);
2291 break;
2292 case 'C': /* CUF -- Cursor <n> Forward */
2293 case 'a': /* HPR -- Cursor <n> Forward */
2294 DEFAULT(csiescseq.arg[0], 1);
2295 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2296 break;
2297 case 'D': /* CUB -- Cursor <n> Backward */
2298 DEFAULT(csiescseq.arg[0], 1);
2299 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2300 break;
2301 case 'E': /* CNL -- Cursor <n> Down and first col */
2302 DEFAULT(csiescseq.arg[0], 1);
2303 tmoveto(0, term.c.y+csiescseq.arg[0]);
2304 break;
2305 case 'F': /* CPL -- Cursor <n> Up and first col */
2306 DEFAULT(csiescseq.arg[0], 1);
2307 tmoveto(0, term.c.y-csiescseq.arg[0]);
2308 break;
2309 case 'g': /* TBC -- Tabulation clear */
2310 switch (csiescseq.arg[0]) {
2311 case 0: /* clear current tab stop */
2312 term.tabs[term.c.x] = 0;
2313 break;
2314 case 3: /* clear all the tabs */
2315 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2316 break;
2317 default:
2318 goto unknown;
2319 }
2320 break;
2321 case 'G': /* CHA -- Move to <col> */
2322 case '`': /* HPA */
2323 DEFAULT(csiescseq.arg[0], 1);
2324 tmoveto(csiescseq.arg[0]-1, term.c.y);
2325 break;
2326 case 'H': /* CUP -- Move to <row> <col> */
2327 case 'f': /* HVP */
2328 DEFAULT(csiescseq.arg[0], 1);
2329 DEFAULT(csiescseq.arg[1], 1);
2330 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2331 break;
2332 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2333 DEFAULT(csiescseq.arg[0], 1);
2334 tputtab(csiescseq.arg[0]);
2335 break;
2336 case 'J': /* ED -- Clear screen */
2337 selclear(NULL);
2338 switch (csiescseq.arg[0]) {
2339 case 0: /* below */
2340 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2341 if (term.c.y < term.row-1) {
2342 tclearregion(0, term.c.y+1, term.col-1,
2343 term.row-1);
2344 }
2345 break;
2346 case 1: /* above */
2347 if (term.c.y > 1)
2348 tclearregion(0, 0, term.col-1, term.c.y-1);
2349 tclearregion(0, term.c.y, term.c.x, term.c.y);
2350 break;
2351 case 2: /* all */
2352 tclearregion(0, 0, term.col-1, term.row-1);
2353 break;
2354 default:
2355 goto unknown;
2356 }
2357 break;
2358 case 'K': /* EL -- Clear line */
2359 switch (csiescseq.arg[0]) {
2360 case 0: /* right */
2361 tclearregion(term.c.x, term.c.y, term.col-1,
2362 term.c.y);
2363 break;
2364 case 1: /* left */
2365 tclearregion(0, term.c.y, term.c.x, term.c.y);
2366 break;
2367 case 2: /* all */
2368 tclearregion(0, term.c.y, term.col-1, term.c.y);
2369 break;
2370 }
2371 break;
2372 case 'S': /* SU -- Scroll <n> line up */
2373 DEFAULT(csiescseq.arg[0], 1);
2374 tscrollup(term.top, csiescseq.arg[0]);
2375 break;
2376 case 'T': /* SD -- Scroll <n> line down */
2377 DEFAULT(csiescseq.arg[0], 1);
2378 tscrolldown(term.top, csiescseq.arg[0]);
2379 break;
2380 case 'L': /* IL -- Insert <n> blank lines */
2381 DEFAULT(csiescseq.arg[0], 1);
2382 tinsertblankline(csiescseq.arg[0]);
2383 break;
2384 case 'l': /* RM -- Reset Mode */
2385 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2386 break;
2387 case 'M': /* DL -- Delete <n> lines */
2388 DEFAULT(csiescseq.arg[0], 1);
2389 tdeleteline(csiescseq.arg[0]);
2390 break;
2391 case 'X': /* ECH -- Erase <n> char */
2392 DEFAULT(csiescseq.arg[0], 1);
2393 tclearregion(term.c.x, term.c.y,
2394 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2395 break;
2396 case 'P': /* DCH -- Delete <n> char */
2397 DEFAULT(csiescseq.arg[0], 1);
2398 tdeletechar(csiescseq.arg[0]);
2399 break;
2400 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2401 DEFAULT(csiescseq.arg[0], 1);
2402 tputtab(-csiescseq.arg[0]);
2403 break;
2404 case 'd': /* VPA -- Move to <row> */
2405 DEFAULT(csiescseq.arg[0], 1);
2406 tmoveato(term.c.x, csiescseq.arg[0]-1);
2407 break;
2408 case 'h': /* SM -- Set terminal mode */
2409 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2410 break;
2411 case 'm': /* SGR -- Terminal attribute (color) */
2412 tsetattr(csiescseq.arg, csiescseq.narg);
2413 break;
2414 case 'n': /* DSR – Device Status Report (cursor position) */
2415 if (csiescseq.arg[0] == 6) {
2416 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2417 term.c.y+1, term.c.x+1);
2418 ttywrite(buf, len);
2419 }
2420 break;
2421 case 'r': /* DECSTBM -- Set Scrolling Region */
2422 if (csiescseq.priv) {
2423 goto unknown;
2424 } else {
2425 DEFAULT(csiescseq.arg[0], 1);
2426 DEFAULT(csiescseq.arg[1], term.row);
2427 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2428 tmoveato(0, 0);
2429 }
2430 break;
2431 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2432 tcursor(CURSOR_SAVE);
2433 break;
2434 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2435 tcursor(CURSOR_LOAD);
2436 break;
2437 case ' ':
2438 switch (csiescseq.mode[1]) {
2439 case 'q': /* DECSCUSR -- Set Cursor Style */
2440 DEFAULT(csiescseq.arg[0], 1);
2441 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2442 goto unknown;
2443 }
2444 xw.cursor = csiescseq.arg[0];
2445 break;
2446 default:
2447 goto unknown;
2448 }
2449 break;
2450 }
2451 }
2452
2453 void
2454 csidump(void)
2455 {
2456 int i;
2457 uint c;
2458
2459 printf("ESC[");
2460 for (i = 0; i < csiescseq.len; i++) {
2461 c = csiescseq.buf[i] & 0xff;
2462 if (isprint(c)) {
2463 putchar(c);
2464 } else if (c == '\n') {
2465 printf("(\\n)");
2466 } else if (c == '\r') {
2467 printf("(\\r)");
2468 } else if (c == 0x1b) {
2469 printf("(\\e)");
2470 } else {
2471 printf("(%02x)", c);
2472 }
2473 }
2474 putchar('\n');
2475 }
2476
2477 void
2478 csireset(void)
2479 {
2480 memset(&csiescseq, 0, sizeof(csiescseq));
2481 }
2482
2483 void
2484 strhandle(void)
2485 {
2486 char *p = NULL;
2487 int j, narg, par;
2488
2489 term.esc &= ~(ESC_STR_END|ESC_STR);
2490 strparse();
2491 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2492
2493 switch (strescseq.type) {
2494 case ']': /* OSC -- Operating System Command */
2495 switch (par) {
2496 case 0:
2497 case 1:
2498 case 2:
2499 if (narg > 1)
2500 xsettitle(strescseq.args[1]);
2501 return;
2502 case 4: /* color set */
2503 if (narg < 3)
2504 break;
2505 p = strescseq.args[2];
2506 /* FALLTHROUGH */
2507 case 104: /* color reset, here p = NULL */
2508 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2509 if (xsetcolorname(j, p)) {
2510 fprintf(stderr, "erresc: invalid color %s\n", p);
2511 } else {
2512 /*
2513 * TODO if defaultbg color is changed, borders
2514 * are dirty
2515 */
2516 redraw();
2517 }
2518 return;
2519 }
2520 break;
2521 case 'k': /* old title set compatibility */
2522 xsettitle(strescseq.args[0]);
2523 return;
2524 case 'P': /* DCS -- Device Control String */
2525 case '_': /* APC -- Application Program Command */
2526 case '^': /* PM -- Privacy Message */
2527 return;
2528 }
2529
2530 fprintf(stderr, "erresc: unknown str ");
2531 strdump();
2532 }
2533
2534 void
2535 strparse(void)
2536 {
2537 int c;
2538 char *p = strescseq.buf;
2539
2540 strescseq.narg = 0;
2541 strescseq.buf[strescseq.len] = '\0';
2542
2543 if (*p == '\0')
2544 return;
2545
2546 while (strescseq.narg < STR_ARG_SIZ) {
2547 strescseq.args[strescseq.narg++] = p;
2548 while ((c = *p) != ';' && c != '\0')
2549 ++p;
2550 if (c == '\0')
2551 return;
2552 *p++ = '\0';
2553 }
2554 }
2555
2556 void
2557 strdump(void)
2558 {
2559 int i;
2560 uint c;
2561
2562 printf("ESC%c", strescseq.type);
2563 for (i = 0; i < strescseq.len; i++) {
2564 c = strescseq.buf[i] & 0xff;
2565 if (c == '\0') {
2566 return;
2567 } else if (isprint(c)) {
2568 putchar(c);
2569 } else if (c == '\n') {
2570 printf("(\\n)");
2571 } else if (c == '\r') {
2572 printf("(\\r)");
2573 } else if (c == 0x1b) {
2574 printf("(\\e)");
2575 } else {
2576 printf("(%02x)", c);
2577 }
2578 }
2579 printf("ESC\\\n");
2580 }
2581
2582 void
2583 strreset(void)
2584 {
2585 memset(&strescseq, 0, sizeof(strescseq));
2586 }
2587
2588 void
2589 sendbreak(const Arg *arg)
2590 {
2591 if (tcsendbreak(cmdfd, 0))
2592 perror("Error sending break");
2593 }
2594
2595 void
2596 tprinter(char *s, size_t len)
2597 {
2598 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
2599 fprintf(stderr, "Error writing in %s:%s\n",
2600 opt_io, strerror(errno));
2601 close(iofd);
2602 iofd = -1;
2603 }
2604 }
2605
2606 void
2607 toggleprinter(const Arg *arg)
2608 {
2609 term.mode ^= MODE_PRINT;
2610 }
2611
2612 void
2613 printscreen(const Arg *arg)
2614 {
2615 tdump();
2616 }
2617
2618 void
2619 printsel(const Arg *arg)
2620 {
2621 tdumpsel();
2622 }
2623
2624 void
2625 tdumpsel(void)
2626 {
2627 char *ptr;
2628
2629 if ((ptr = getsel())) {
2630 tprinter(ptr, strlen(ptr));
2631 free(ptr);
2632 }
2633 }
2634
2635 void
2636 tdumpline(int n)
2637 {
2638 char buf[UTF_SIZ];
2639 Glyph *bp, *end;
2640
2641 bp = &term.line[n][0];
2642 end = &bp[MIN(tlinelen(n), term.col) - 1];
2643 if (bp != end || bp->u != ' ') {
2644 for ( ;bp <= end; ++bp)
2645 tprinter(buf, utf8encode(bp->u, buf));
2646 }
2647 tprinter("\n", 1);
2648 }
2649
2650 void
2651 tdump(void)
2652 {
2653 int i;
2654
2655 for (i = 0; i < term.row; ++i)
2656 tdumpline(i);
2657 }
2658
2659 void
2660 tputtab(int n)
2661 {
2662 uint x = term.c.x;
2663
2664 if (n > 0) {
2665 while (x < term.col && n--)
2666 for (++x; x < term.col && !term.tabs[x]; ++x)
2667 /* nothing */ ;
2668 } else if (n < 0) {
2669 while (x > 0 && n++)
2670 for (--x; x > 0 && !term.tabs[x]; --x)
2671 /* nothing */ ;
2672 }
2673 term.c.x = LIMIT(x, 0, term.col-1);
2674 }
2675
2676 void
2677 techo(Rune u)
2678 {
2679 if (ISCONTROL(u)) { /* control code */
2680 if (u & 0x80) {
2681 u &= 0x7f;
2682 tputc('^');
2683 tputc('[');
2684 } else if (u != '\n' && u != '\r' && u != '\t') {
2685 u ^= 0x40;
2686 tputc('^');
2687 }
2688 }
2689 tputc(u);
2690 }
2691
2692 void
2693 tdeftran(char ascii)
2694 {
2695 static char cs[] = "0B";
2696 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2697 char *p;
2698
2699 if ((p = strchr(cs, ascii)) == NULL) {
2700 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2701 } else {
2702 term.trantbl[term.icharset] = vcs[p - cs];
2703 }
2704 }
2705
2706 void
2707 tdectest(char c)
2708 {
2709 int x, y;
2710
2711 if (c == '8') { /* DEC screen alignment test. */
2712 for (x = 0; x < term.col; ++x) {
2713 for (y = 0; y < term.row; ++y)
2714 tsetchar('E', &term.c.attr, x, y);
2715 }
2716 }
2717 }
2718
2719 void
2720 tstrsequence(uchar c)
2721 {
2722 switch (c) {
2723 case 0x90: /* DCS -- Device Control String */
2724 c = 'P';
2725 break;
2726 case 0x9f: /* APC -- Application Program Command */
2727 c = '_';
2728 break;
2729 case 0x9e: /* PM -- Privacy Message */
2730 c = '^';
2731 break;
2732 case 0x9d: /* OSC -- Operating System Command */
2733 c = ']';
2734 break;
2735 }
2736 strreset();
2737 strescseq.type = c;
2738 term.esc |= ESC_STR;
2739 }
2740
2741 void
2742 tcontrolcode(uchar ascii)
2743 {
2744 switch (ascii) {
2745 case '\t': /* HT */
2746 tputtab(1);
2747 return;
2748 case '\b': /* BS */
2749 tmoveto(term.c.x-1, term.c.y);
2750 return;
2751 case '\r': /* CR */
2752 tmoveto(0, term.c.y);
2753 return;
2754 case '\f': /* LF */
2755 case '\v': /* VT */
2756 case '\n': /* LF */
2757 /* go to first col if the mode is set */
2758 tnewline(IS_SET(MODE_CRLF));
2759 return;
2760 case '\a': /* BEL */
2761 if (term.esc & ESC_STR_END) {
2762 /* backwards compatibility to xterm */
2763 strhandle();
2764 } else {
2765 if (!(xw.state & WIN_FOCUSED))
2766 xseturgency(1);
2767 if (bellvolume)
2768 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2769 }
2770 break;
2771 case '\033': /* ESC */
2772 csireset();
2773 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2774 term.esc |= ESC_START;
2775 return;
2776 case '\016': /* SO (LS1 -- Locking shift 1) */
2777 case '\017': /* SI (LS0 -- Locking shift 0) */
2778 term.charset = 1 - (ascii - '\016');
2779 return;
2780 case '\032': /* SUB */
2781 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2782 case '\030': /* CAN */
2783 csireset();
2784 break;
2785 case '\005': /* ENQ (IGNORED) */
2786 case '\000': /* NUL (IGNORED) */
2787 case '\021': /* XON (IGNORED) */
2788 case '\023': /* XOFF (IGNORED) */
2789 case 0177: /* DEL (IGNORED) */
2790 return;
2791 case 0x80: /* TODO: PAD */
2792 case 0x81: /* TODO: HOP */
2793 case 0x82: /* TODO: BPH */
2794 case 0x83: /* TODO: NBH */
2795 case 0x84: /* TODO: IND */
2796 break;
2797 case 0x85: /* NEL -- Next line */
2798 tnewline(1); /* always go to first col */
2799 break;
2800 case 0x86: /* TODO: SSA */
2801 case 0x87: /* TODO: ESA */
2802 break;
2803 case 0x88: /* HTS -- Horizontal tab stop */
2804 term.tabs[term.c.x] = 1;
2805 break;
2806 case 0x89: /* TODO: HTJ */
2807 case 0x8a: /* TODO: VTS */
2808 case 0x8b: /* TODO: PLD */
2809 case 0x8c: /* TODO: PLU */
2810 case 0x8d: /* TODO: RI */
2811 case 0x8e: /* TODO: SS2 */
2812 case 0x8f: /* TODO: SS3 */
2813 case 0x91: /* TODO: PU1 */
2814 case 0x92: /* TODO: PU2 */
2815 case 0x93: /* TODO: STS */
2816 case 0x94: /* TODO: CCH */
2817 case 0x95: /* TODO: MW */
2818 case 0x96: /* TODO: SPA */
2819 case 0x97: /* TODO: EPA */
2820 case 0x98: /* TODO: SOS */
2821 case 0x99: /* TODO: SGCI */
2822 break;
2823 case 0x9a: /* DECID -- Identify Terminal */
2824 ttywrite(vtiden, sizeof(vtiden) - 1);
2825 break;
2826 case 0x9b: /* TODO: CSI */
2827 case 0x9c: /* TODO: ST */
2828 break;
2829 case 0x90: /* DCS -- Device Control String */
2830 case 0x9d: /* OSC -- Operating System Command */
2831 case 0x9e: /* PM -- Privacy Message */
2832 case 0x9f: /* APC -- Application Program Command */
2833 tstrsequence(ascii);
2834 return;
2835 }
2836 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2837 term.esc &= ~(ESC_STR_END|ESC_STR);
2838 }
2839
2840 /*
2841 * returns 1 when the sequence is finished and it hasn't to read
2842 * more characters for this sequence, otherwise 0
2843 */
2844 int
2845 eschandle(uchar ascii)
2846 {
2847 switch (ascii) {
2848 case '[':
2849 term.esc |= ESC_CSI;
2850 return 0;
2851 case '#':
2852 term.esc |= ESC_TEST;
2853 return 0;
2854 case 'P': /* DCS -- Device Control String */
2855 case '_': /* APC -- Application Program Command */
2856 case '^': /* PM -- Privacy Message */
2857 case ']': /* OSC -- Operating System Command */
2858 case 'k': /* old title set compatibility */
2859 tstrsequence(ascii);
2860 return 0;
2861 case 'n': /* LS2 -- Locking shift 2 */
2862 case 'o': /* LS3 -- Locking shift 3 */
2863 term.charset = 2 + (ascii - 'n');
2864 break;
2865 case '(': /* GZD4 -- set primary charset G0 */
2866 case ')': /* G1D4 -- set secondary charset G1 */
2867 case '*': /* G2D4 -- set tertiary charset G2 */
2868 case '+': /* G3D4 -- set quaternary charset G3 */
2869 term.icharset = ascii - '(';
2870 term.esc |= ESC_ALTCHARSET;
2871 return 0;
2872 case 'D': /* IND -- Linefeed */
2873 if (term.c.y == term.bot) {
2874 tscrollup(term.top, 1);
2875 } else {
2876 tmoveto(term.c.x, term.c.y+1);
2877 }
2878 break;
2879 case 'E': /* NEL -- Next line */
2880 tnewline(1); /* always go to first col */
2881 break;
2882 case 'H': /* HTS -- Horizontal tab stop */
2883 term.tabs[term.c.x] = 1;
2884 break;
2885 case 'M': /* RI -- Reverse index */
2886 if (term.c.y == term.top) {
2887 tscrolldown(term.top, 1);
2888 } else {
2889 tmoveto(term.c.x, term.c.y-1);
2890 }
2891 break;
2892 case 'Z': /* DECID -- Identify Terminal */
2893 ttywrite(vtiden, sizeof(vtiden) - 1);
2894 break;
2895 case 'c': /* RIS -- Reset to inital state */
2896 treset();
2897 xresettitle();
2898 xloadcols();
2899 break;
2900 case '=': /* DECPAM -- Application keypad */
2901 term.mode |= MODE_APPKEYPAD;
2902 break;
2903 case '>': /* DECPNM -- Normal keypad */
2904 term.mode &= ~MODE_APPKEYPAD;
2905 break;
2906 case '7': /* DECSC -- Save Cursor */
2907 tcursor(CURSOR_SAVE);
2908 break;
2909 case '8': /* DECRC -- Restore Cursor */
2910 tcursor(CURSOR_LOAD);
2911 break;
2912 case '\\': /* ST -- String Terminator */
2913 if (term.esc & ESC_STR_END)
2914 strhandle();
2915 break;
2916 default:
2917 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2918 (uchar) ascii, isprint(ascii)? ascii:'.');
2919 break;
2920 }
2921 return 1;
2922 }
2923
2924 void
2925 tputc(Rune u)
2926 {
2927 char c[UTF_SIZ];
2928 int control;
2929 int width, len;
2930 Glyph *gp;
2931
2932 control = ISCONTROL(u);
2933 len = utf8encode(u, c);
2934 if (!control && (width = wcwidth(u)) == -1) {
2935 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
2936 width = 1;
2937 }
2938
2939 if (IS_SET(MODE_PRINT))
2940 tprinter(c, len);
2941
2942 /*
2943 * STR sequence must be checked before anything else
2944 * because it uses all following characters until it
2945 * receives a ESC, a SUB, a ST or any other C1 control
2946 * character.
2947 */
2948 if (term.esc & ESC_STR) {
2949 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
2950 ISCONTROLC1(u)) {
2951 term.esc &= ~(ESC_START|ESC_STR);
2952 term.esc |= ESC_STR_END;
2953 } else if (strescseq.len + len < sizeof(strescseq.buf) - 1) {
2954 memmove(&strescseq.buf[strescseq.len], c, len);
2955 strescseq.len += len;
2956 return;
2957 } else {
2958 /*
2959 * Here is a bug in terminals. If the user never sends
2960 * some code to stop the str or esc command, then st
2961 * will stop responding. But this is better than
2962 * silently failing with unknown characters. At least
2963 * then users will report back.
2964 *
2965 * In the case users ever get fixed, here is the code:
2966 */
2967 /*
2968 * term.esc = 0;
2969 * strhandle();
2970 */
2971 return;
2972 }
2973 }
2974
2975 /*
2976 * Actions of control codes must be performed as soon they arrive
2977 * because they can be embedded inside a control sequence, and
2978 * they must not cause conflicts with sequences.
2979 */
2980 if (control) {
2981 tcontrolcode(u);
2982 /*
2983 * control codes are not shown ever
2984 */
2985 return;
2986 } else if (term.esc & ESC_START) {
2987 if (term.esc & ESC_CSI) {
2988 csiescseq.buf[csiescseq.len++] = u;
2989 if (BETWEEN(u, 0x40, 0x7E)
2990 || csiescseq.len >= \
2991 sizeof(csiescseq.buf)-1) {
2992 term.esc = 0;
2993 csiparse();
2994 csihandle();
2995 }
2996 return;
2997 } else if (term.esc & ESC_ALTCHARSET) {
2998 tdeftran(u);
2999 } else if (term.esc & ESC_TEST) {
3000 tdectest(u);
3001 } else {
3002 if (!eschandle(u))
3003 return;
3004 /* sequence already finished */
3005 }
3006 term.esc = 0;
3007 /*
3008 * All characters which form part of a sequence are not
3009 * printed
3010 */
3011 return;
3012 }
3013 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
3014 selclear(NULL);
3015
3016 gp = &term.line[term.c.y][term.c.x];
3017 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
3018 gp->mode |= ATTR_WRAP;
3019 tnewline(1);
3020 gp = &term.line[term.c.y][term.c.x];
3021 }
3022
3023 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
3024 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
3025
3026 if (term.c.x+width > term.col) {
3027 tnewline(1);
3028 gp = &term.line[term.c.y][term.c.x];
3029 }
3030
3031 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
3032
3033 if (width == 2) {
3034 gp->mode |= ATTR_WIDE;
3035 if (term.c.x+1 < term.col) {
3036 gp[1].u = '\0';
3037 gp[1].mode = ATTR_WDUMMY;
3038 }
3039 }
3040 if (term.c.x+width < term.col) {
3041 tmoveto(term.c.x+width, term.c.y);
3042 } else {
3043 term.c.state |= CURSOR_WRAPNEXT;
3044 }
3045 }
3046
3047 void
3048 tresize(int col, int row)
3049 {
3050 int i;
3051 int minrow = MIN(row, term.row);
3052 int mincol = MIN(col, term.col);
3053 int *bp;
3054 TCursor c;
3055
3056 if (col < 1 || row < 1) {
3057 fprintf(stderr,
3058 "tresize: error resizing to %dx%d\n", col, row);
3059 return;
3060 }
3061
3062 /*
3063 * slide screen to keep cursor where we expect it -
3064 * tscrollup would work here, but we can optimize to
3065 * memmove because we're freeing the earlier lines
3066 */
3067 for (i = 0; i <= term.c.y - row; i++) {
3068 free(term.line[i]);
3069 free(term.alt[i]);
3070 }
3071 /* ensure that both src and dst are not NULL */
3072 if (i > 0) {
3073 memmove(term.line, term.line + i, row * sizeof(Line));
3074 memmove(term.alt, term.alt + i, row * sizeof(Line));
3075 }
3076 for (i += row; i < term.row; i++) {
3077 free(term.line[i]);
3078 free(term.alt[i]);
3079 }
3080
3081 /* resize to new width */
3082 term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
3083
3084 /* resize to new height */
3085 term.line = xrealloc(term.line, row * sizeof(Line));
3086 term.alt = xrealloc(term.alt, row * sizeof(Line));
3087 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
3088 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
3089
3090 /* resize each row to new width, zero-pad if needed */
3091 for (i = 0; i < minrow; i++) {
3092 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
3093 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
3094 }
3095
3096 /* allocate any new rows */
3097 for (/* i == minrow */; i < row; i++) {
3098 term.line[i] = xmalloc(col * sizeof(Glyph));
3099 term.alt[i] = xmalloc(col * sizeof(Glyph));
3100 }
3101 if (col > term.col) {
3102 bp = term.tabs + term.col;
3103
3104 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
3105 while (--bp > term.tabs && !*bp)
3106 /* nothing */ ;
3107 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
3108 *bp = 1;
3109 }
3110 /* update terminal size */
3111 term.col = col;
3112 term.row = row;
3113 /* reset scrolling region */
3114 tsetscroll(0, row-1);
3115 /* make use of the LIMIT in tmoveto */
3116 tmoveto(term.c.x, term.c.y);
3117 /* Clearing both screens (it makes dirty all lines) */
3118 c = term.c;
3119 for (i = 0; i < 2; i++) {
3120 if (mincol < col && 0 < minrow) {
3121 tclearregion(mincol, 0, col - 1, minrow - 1);
3122 }
3123 if (0 < col && minrow < row) {
3124 tclearregion(0, minrow, col - 1, row - 1);
3125 }
3126 tswapscreen();
3127 tcursor(CURSOR_LOAD);
3128 }
3129 term.c = c;
3130 }
3131
3132 void
3133 xresize(int col, int row)
3134 {
3135 xw.tw = MAX(1, col * xw.cw);
3136 xw.th = MAX(1, row * xw.ch);
3137
3138 XFreePixmap(xw.dpy, xw.buf);
3139 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3140 DefaultDepth(xw.dpy, xw.scr));
3141 XftDrawChange(xw.draw, xw.buf);
3142 xclear(0, 0, xw.w, xw.h);
3143 }
3144
3145 ushort
3146 sixd_to_16bit(int x)
3147 {
3148 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
3149 }
3150
3151 int
3152 xloadcolor(int i, const char *name, Color *ncolor)
3153 {
3154 XRenderColor color = { .alpha = 0xffff };
3155
3156 if (!name) {
3157 if (BETWEEN(i, 16, 255)) { /* 256 color */
3158 if (i < 6*6*6+16) { /* same colors as xterm */
3159 color.red = sixd_to_16bit( ((i-16)/36)%6 );
3160 color.green = sixd_to_16bit( ((i-16)/6) %6 );
3161 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
3162 } else { /* greyscale */
3163 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
3164 color.green = color.blue = color.red;
3165 }
3166 return XftColorAllocValue(xw.dpy, xw.vis,
3167 xw.cmap, &color, ncolor);
3168 } else
3169 name = colorname[i];
3170 }
3171
3172 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
3173 }
3174
3175 void
3176 xloadcols(void)
3177 {
3178 int i;
3179 static int loaded;
3180 Color *cp;
3181
3182 if (loaded) {
3183 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
3184 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
3185 }
3186
3187 for (i = 0; i < LEN(dc.col); i++)
3188 if (!xloadcolor(i, NULL, &dc.col[i])) {
3189 if (colorname[i])
3190 die("Could not allocate color '%s'\n", colorname[i]);
3191 else
3192 die("Could not allocate color %d\n", i);
3193 }
3194 loaded = 1;
3195 }
3196
3197 int
3198 xsetcolorname(int x, const char *name)
3199 {
3200 Color ncolor;
3201
3202 if (!BETWEEN(x, 0, LEN(dc.col)))
3203 return 1;
3204
3205
3206 if (!xloadcolor(x, name, &ncolor))
3207 return 1;
3208
3209 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
3210 dc.col[x] = ncolor;
3211
3212 return 0;
3213 }
3214
3215 void
3216 xtermclear(int col1, int row1, int col2, int row2)
3217 {
3218 XftDrawRect(xw.draw,
3219 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
3220 borderpx + col1 * xw.cw,
3221 borderpx + row1 * xw.ch,
3222 (col2-col1+1) * xw.cw,
3223 (row2-row1+1) * xw.ch);
3224 }
3225
3226 /*
3227 * Absolute coordinates.
3228 */
3229 void
3230 xclear(int x1, int y1, int x2, int y2)
3231 {
3232 XftDrawRect(xw.draw,
3233 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
3234 x1, y1, x2-x1, y2-y1);
3235 }
3236
3237 void
3238 xhints(void)
3239 {
3240 XClassHint class = {termname, opt_class ? opt_class : termname};
3241 XWMHints wm = {.flags = InputHint, .input = 1};
3242 XSizeHints *sizeh = NULL;
3243
3244 sizeh = XAllocSizeHints();
3245
3246 sizeh->flags = PSize | PResizeInc | PBaseSize;
3247 sizeh->height = xw.h;
3248 sizeh->width = xw.w;
3249 sizeh->height_inc = xw.ch;
3250 sizeh->width_inc = xw.cw;
3251 sizeh->base_height = 2 * borderpx;
3252 sizeh->base_width = 2 * borderpx;
3253 if (xw.isfixed) {
3254 sizeh->flags |= PMaxSize | PMinSize;
3255 sizeh->min_width = sizeh->max_width = xw.w;
3256 sizeh->min_height = sizeh->max_height = xw.h;
3257 }
3258 if (xw.gm & (XValue|YValue)) {
3259 sizeh->flags |= USPosition | PWinGravity;
3260 sizeh->x = xw.l;
3261 sizeh->y = xw.t;
3262 sizeh->win_gravity = xgeommasktogravity(xw.gm);
3263 }
3264
3265 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
3266 &class);
3267 XFree(sizeh);
3268 }
3269
3270 int
3271 xgeommasktogravity(int mask)
3272 {
3273 switch (mask & (XNegative|YNegative)) {
3274 case 0:
3275 return NorthWestGravity;
3276 case XNegative:
3277 return NorthEastGravity;
3278 case YNegative:
3279 return SouthWestGravity;
3280 }
3281
3282 return SouthEastGravity;
3283 }
3284
3285 int
3286 xloadfont(Font *f, FcPattern *pattern)
3287 {
3288 FcPattern *match;
3289 FcResult result;
3290
3291 match = FcFontMatch(NULL, pattern, &result);
3292 if (!match)
3293 return 1;
3294
3295 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3296 FcPatternDestroy(match);
3297 return 1;
3298 }
3299
3300 f->set = NULL;
3301 f->pattern = FcPatternDuplicate(pattern);
3302
3303 f->ascent = f->match->ascent;
3304 f->descent = f->match->descent;
3305 f->lbearing = 0;
3306 f->rbearing = f->match->max_advance_width;
3307
3308 f->height = f->ascent + f->descent;
3309 f->width = f->lbearing + f->rbearing;
3310
3311 return 0;
3312 }
3313
3314 void
3315 xloadfonts(char *fontstr, double fontsize)
3316 {
3317 FcPattern *pattern;
3318 double fontval;
3319 float ceilf(float);
3320
3321 if (fontstr[0] == '-') {
3322 pattern = XftXlfdParse(fontstr, False, False);
3323 } else {
3324 pattern = FcNameParse((FcChar8 *)fontstr);
3325 }
3326
3327 if (!pattern)
3328 die("st: can't open font %s\n", fontstr);
3329
3330 if (fontsize > 1) {
3331 FcPatternDel(pattern, FC_PIXEL_SIZE);
3332 FcPatternDel(pattern, FC_SIZE);
3333 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3334 usedfontsize = fontsize;
3335 } else {
3336 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
3337 FcResultMatch) {
3338 usedfontsize = fontval;
3339 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
3340 FcResultMatch) {
3341 usedfontsize = -1;
3342 } else {
3343 /*
3344 * Default font size is 12, if none given. This is to
3345 * have a known usedfontsize value.
3346 */
3347 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3348 usedfontsize = 12;
3349 }
3350 defaultfontsize = usedfontsize;
3351 }
3352
3353 FcConfigSubstitute(0, pattern, FcMatchPattern);
3354 FcDefaultSubstitute(pattern);
3355
3356 if (xloadfont(&dc.font, pattern))
3357 die("st: can't open font %s\n", fontstr);
3358
3359 if (usedfontsize < 0) {
3360 FcPatternGetDouble(dc.font.match->pattern,
3361 FC_PIXEL_SIZE, 0, &fontval);
3362 usedfontsize = fontval;
3363 if (fontsize == 0)
3364 defaultfontsize = fontval;
3365 }
3366
3367 /* Setting character width and height. */
3368 xw.cw = ceilf(dc.font.width * cwscale);
3369 xw.ch = ceilf(dc.font.height * chscale);
3370
3371 FcPatternDel(pattern, FC_SLANT);
3372 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3373 if (xloadfont(&dc.ifont, pattern))
3374 die("st: can't open font %s\n", fontstr);
3375
3376 FcPatternDel(pattern, FC_WEIGHT);
3377 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3378 if (xloadfont(&dc.ibfont, pattern))
3379 die("st: can't open font %s\n", fontstr);
3380
3381 FcPatternDel(pattern, FC_SLANT);
3382 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3383 if (xloadfont(&dc.bfont, pattern))
3384 die("st: can't open font %s\n", fontstr);
3385
3386 FcPatternDestroy(pattern);
3387 }
3388
3389 void
3390 xunloadfont(Font *f)
3391 {
3392 XftFontClose(xw.dpy, f->match);
3393 FcPatternDestroy(f->pattern);
3394 if (f->set)
3395 FcFontSetDestroy(f->set);
3396 }
3397
3398 void
3399 xunloadfonts(void)
3400 {
3401 /* Free the loaded fonts in the font cache. */
3402 while (frclen > 0)
3403 XftFontClose(xw.dpy, frc[--frclen].font);
3404
3405 xunloadfont(&dc.font);
3406 xunloadfont(&dc.bfont);
3407 xunloadfont(&dc.ifont);
3408 xunloadfont(&dc.ibfont);
3409 }
3410
3411 void
3412 xzoom(const Arg *arg)
3413 {
3414 Arg larg;
3415
3416 larg.f = usedfontsize + arg->f;
3417 xzoomabs(&larg);
3418 }
3419
3420 void
3421 xzoomabs(const Arg *arg)
3422 {
3423 xunloadfonts();
3424 xloadfonts(usedfont, arg->f);
3425 cresize(0, 0);
3426 redraw();
3427 xhints();
3428 }
3429
3430 void
3431 xzoomreset(const Arg *arg)
3432 {
3433 Arg larg;
3434
3435 if (defaultfontsize > 0) {
3436 larg.f = defaultfontsize;
3437 xzoomabs(&larg);
3438 }
3439 }
3440
3441 void
3442 xinit(void)
3443 {
3444 XGCValues gcvalues;
3445 Cursor cursor;
3446 Window parent;
3447 pid_t thispid = getpid();
3448 XColor xmousefg, xmousebg;
3449
3450 if (!(xw.dpy = XOpenDisplay(NULL)))
3451 die("Can't open display\n");
3452 xw.scr = XDefaultScreen(xw.dpy);
3453 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3454
3455 /* font */
3456 if (!FcInit())
3457 die("Could not init fontconfig.\n");
3458
3459 usedfont = (opt_font == NULL)? font : opt_font;
3460 xloadfonts(usedfont, 0);
3461
3462 /* colors */
3463 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3464 xloadcols();
3465
3466 /* adjust fixed window geometry */
3467 xw.w = 2 * borderpx + term.col * xw.cw;
3468 xw.h = 2 * borderpx + term.row * xw.ch;
3469 if (xw.gm & XNegative)
3470 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3471 if (xw.gm & YNegative)
3472 xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
3473
3474 /* Events */
3475 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3476 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3477 xw.attrs.bit_gravity = NorthWestGravity;
3478 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3479 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3480 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3481 xw.attrs.colormap = xw.cmap;
3482
3483 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
3484 parent = XRootWindow(xw.dpy, xw.scr);
3485 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3486 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3487 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3488 | CWEventMask | CWColormap, &xw.attrs);
3489
3490 memset(&gcvalues, 0, sizeof(gcvalues));
3491 gcvalues.graphics_exposures = False;
3492 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3493 &gcvalues);
3494 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3495 DefaultDepth(xw.dpy, xw.scr));
3496 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3497 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3498
3499 /* Xft rendering context */
3500 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3501
3502 /* input methods */
3503 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3504 XSetLocaleModifiers("@im=local");
3505 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3506 XSetLocaleModifiers("@im=");
3507 if ((xw.xim = XOpenIM(xw.dpy,
3508 NULL, NULL, NULL)) == NULL) {
3509 die("XOpenIM failed. Could not open input"
3510 " device.\n");
3511 }
3512 }
3513 }
3514 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3515 | XIMStatusNothing, XNClientWindow, xw.win,
3516 XNFocusWindow, xw.win, NULL);
3517 if (xw.xic == NULL)
3518 die("XCreateIC failed. Could not obtain input method.\n");
3519
3520 /* white cursor, black outline */
3521 cursor = XCreateFontCursor(xw.dpy, mouseshape);
3522 XDefineCursor(xw.dpy, xw.win, cursor);
3523
3524 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
3525 xmousefg.red = 0xffff;
3526 xmousefg.green = 0xffff;
3527 xmousefg.blue = 0xffff;
3528 }
3529
3530 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
3531 xmousebg.red = 0x0000;
3532 xmousebg.green = 0x0000;
3533 xmousebg.blue = 0x0000;
3534 }
3535
3536 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
3537
3538 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3539 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3540 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3541 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3542
3543 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3544 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3545 PropModeReplace, (uchar *)&thispid, 1);
3546
3547 xresettitle();
3548 XMapWindow(xw.dpy, xw.win);
3549 xhints();
3550 XSync(xw.dpy, False);
3551 }
3552
3553 int
3554 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
3555 {
3556 float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
3557 ushort mode, prevmode = USHRT_MAX;
3558 Font *font = &dc.font;
3559 int frcflags = FRC_NORMAL;
3560 float runewidth = xw.cw;
3561 Rune rune;
3562 FT_UInt glyphidx;
3563 FcResult fcres;
3564 FcPattern *fcpattern, *fontpattern;
3565 FcFontSet *fcsets[] = { NULL };
3566 FcCharSet *fccharset;
3567 int i, f, numspecs = 0;
3568
3569 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
3570 /* Fetch rune and mode for current glyph. */
3571 rune = glyphs[i].u;
3572 mode = glyphs[i].mode;
3573
3574 /* Skip dummy wide-character spacing. */
3575 if (mode == ATTR_WDUMMY)
3576 continue;
3577
3578 /* Determine font for glyph if different from previous glyph. */
3579 if (prevmode != mode) {
3580 prevmode = mode;
3581 font = &dc.font;
3582 frcflags = FRC_NORMAL;
3583 runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
3584 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
3585 font = &dc.ibfont;
3586 frcflags = FRC_ITALICBOLD;
3587 } else if (mode & ATTR_ITALIC) {
3588 font = &dc.ifont;
3589 frcflags = FRC_ITALIC;
3590 } else if (mode & ATTR_BOLD) {
3591 font = &dc.bfont;
3592 frcflags = FRC_BOLD;
3593 }
3594 yp = winy + font->ascent;
3595 }
3596
3597 /* Lookup character index with default font. */
3598 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
3599 if (glyphidx) {
3600 specs[numspecs].font = font->match;
3601 specs[numspecs].glyph = glyphidx;
3602 specs[numspecs].x = (short)xp;
3603 specs[numspecs].y = (short)yp;
3604 xp += runewidth;
3605 numspecs++;
3606 continue;
3607 }
3608
3609 /* Fallback on font cache, search the font cache for match. */
3610 for (f = 0; f < frclen; f++) {
3611 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
3612 /* Everything correct. */
3613 if (glyphidx && frc[f].flags == frcflags)
3614 break;
3615 /* We got a default font for a not found glyph. */
3616 if (!glyphidx && frc[f].flags == frcflags
3617 && frc[f].unicodep == rune) {
3618 break;
3619 }
3620 }
3621
3622 /* Nothing was found. Use fontconfig to find matching font. */
3623 if (f >= frclen) {
3624 if (!font->set)
3625 font->set = FcFontSort(0, font->pattern,
3626 1, 0, &fcres);
3627 fcsets[0] = font->set;
3628
3629 /*
3630 * Nothing was found in the cache. Now use
3631 * some dozen of Fontconfig calls to get the
3632 * font for one single character.
3633 *
3634 * Xft and fontconfig are design failures.
3635 */
3636 fcpattern = FcPatternDuplicate(font->pattern);
3637 fccharset = FcCharSetCreate();
3638
3639 FcCharSetAddChar(fccharset, rune);
3640 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3641 fccharset);
3642 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
3643
3644 FcConfigSubstitute(0, fcpattern,
3645 FcMatchPattern);
3646 FcDefaultSubstitute(fcpattern);
3647
3648 fontpattern = FcFontSetMatch(0, fcsets, 1,
3649 fcpattern, &fcres);
3650
3651 /*
3652 * Overwrite or create the new cache entry.
3653 */
3654 if (frclen >= LEN(frc)) {
3655 frclen = LEN(frc) - 1;
3656 XftFontClose(xw.dpy, frc[frclen].font);
3657 frc[frclen].unicodep = 0;
3658 }
3659
3660 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3661 fontpattern);
3662 frc[frclen].flags = frcflags;
3663 frc[frclen].unicodep = rune;
3664
3665 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
3666
3667 f = frclen;
3668 frclen++;
3669
3670 FcPatternDestroy(fcpattern);
3671 FcCharSetDestroy(fccharset);
3672 }
3673
3674 specs[numspecs].font = frc[f].font;
3675 specs[numspecs].glyph = glyphidx;
3676 specs[numspecs].x = (short)xp;
3677 specs[numspecs].y = (short)(winy + frc[f].font->ascent);
3678 xp += runewidth;
3679 numspecs++;
3680 }
3681
3682 return numspecs;
3683 }
3684
3685 void
3686 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
3687 {
3688 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
3689 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3690 width = charlen * xw.cw;
3691 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3692 XRenderColor colfg, colbg;
3693 XRectangle r;
3694
3695 /* Determine foreground and background colors based on mode. */
3696 if (base.fg == defaultfg) {
3697 if (base.mode & ATTR_ITALIC)
3698 base.fg = defaultitalic;
3699 else if ((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
3700 base.fg = defaultitalic;
3701 else if (base.mode & ATTR_UNDERLINE)
3702 base.fg = defaultunderline;
3703 }
3704
3705 if (IS_TRUECOL(base.fg)) {
3706 colfg.alpha = 0xffff;
3707 colfg.red = TRUERED(base.fg);
3708 colfg.green = TRUEGREEN(base.fg);
3709 colfg.blue = TRUEBLUE(base.fg);
3710 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3711 fg = &truefg;
3712 } else {
3713 fg = &dc.col[base.fg];
3714 }
3715
3716 if (IS_TRUECOL(base.bg)) {
3717 colbg.alpha = 0xffff;
3718 colbg.green = TRUEGREEN(base.bg);
3719 colbg.red = TRUERED(base.bg);
3720 colbg.blue = TRUEBLUE(base.bg);
3721 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3722 bg = &truebg;
3723 } else {
3724 bg = &dc.col[base.bg];
3725 }
3726
3727 /* Change basic system colors [0-7] to bright system colors [8-15] */
3728 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
3729 fg = &dc.col[base.fg + 8];
3730
3731 if (IS_SET(MODE_REVERSE)) {
3732 if (fg == &dc.col[defaultfg]) {
3733 fg = &dc.col[defaultbg];
3734 } else {
3735 colfg.red = ~fg->color.red;
3736 colfg.green = ~fg->color.green;
3737 colfg.blue = ~fg->color.blue;
3738 colfg.alpha = fg->color.alpha;
3739 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3740 &revfg);
3741 fg = &revfg;
3742 }
3743
3744 if (bg == &dc.col[defaultbg]) {
3745 bg = &dc.col[defaultfg];
3746 } else {
3747 colbg.red = ~bg->color.red;
3748 colbg.green = ~bg->color.green;
3749 colbg.blue = ~bg->color.blue;
3750 colbg.alpha = bg->color.alpha;
3751 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3752 &revbg);
3753 bg = &revbg;
3754 }
3755 }
3756
3757 if (base.mode & ATTR_REVERSE) {
3758 temp = fg;
3759 fg = bg;
3760 bg = temp;
3761 }
3762
3763 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
3764 colfg.red = fg->color.red / 2;
3765 colfg.green = fg->color.green / 2;
3766 colfg.blue = fg->color.blue / 2;
3767 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3768 fg = &revfg;
3769 }
3770
3771 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3772 fg = bg;
3773
3774 if (base.mode & ATTR_INVISIBLE)
3775 fg = bg;
3776
3777 /* Intelligent cleaning up of the borders. */
3778 if (x == 0) {
3779 xclear(0, (y == 0)? 0 : winy, borderpx,
3780 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3781 }
3782 if (x + charlen >= term.col) {
3783 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3784 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3785 }
3786 if (y == 0)
3787 xclear(winx, 0, winx + width, borderpx);
3788 if (y == term.row-1)
3789 xclear(winx, winy + xw.ch, winx + width, xw.h);
3790
3791 /* Clean up the region we want to draw to. */
3792 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3793
3794 /* Set the clip region because Xft is sometimes dirty. */
3795 r.x = 0;
3796 r.y = 0;
3797 r.height = xw.ch;
3798 r.width = width;
3799 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3800
3801 /* Render the glyphs. */
3802 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
3803
3804 /* Render underline and strikethrough. */
3805 if (base.mode & ATTR_UNDERLINE) {
3806 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
3807 width, 1);
3808 }
3809
3810 if (base.mode & ATTR_STRUCK) {
3811 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
3812 width, 1);
3813 }
3814
3815 /* Reset clip to none. */
3816 XftDrawSetClip(xw.draw, 0);
3817 }
3818
3819 void
3820 xdrawglyph(Glyph g, int x, int y)
3821 {
3822 int numspecs;
3823 XftGlyphFontSpec spec;
3824
3825 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
3826 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
3827 }
3828
3829 void
3830 xdrawcursor(void)
3831 {
3832 static int oldx = 0, oldy = 0;
3833 int curx;
3834 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
3835 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3836 Color drawcol;
3837
3838 LIMIT(oldx, 0, term.col-1);
3839 LIMIT(oldy, 0, term.row-1);
3840
3841 curx = term.c.x;
3842
3843 /* adjust position if in dummy */
3844 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
3845 oldx--;
3846 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3847 curx--;
3848
3849 /* remove the old cursor */
3850 og = term.line[oldy][oldx];
3851 if (ena_sel && selected(oldx, oldy))
3852 og.mode ^= ATTR_REVERSE;
3853 xdrawglyph(og, oldx, oldy);
3854
3855 g.u = term.line[term.c.y][term.c.x].u;
3856
3857 /*
3858 * Select the right color for the right mode.
3859 */
3860 if (IS_SET(MODE_REVERSE)) {
3861 g.mode |= ATTR_REVERSE;
3862 g.bg = defaultfg;
3863 if (ena_sel && selected(term.c.x, term.c.y)) {
3864 drawcol = dc.col[defaultcs];
3865 g.fg = defaultrcs;
3866 } else {
3867 drawcol = dc.col[defaultrcs];
3868 g.fg = defaultcs;
3869 }
3870 } else {
3871 if (ena_sel && selected(term.c.x, term.c.y)) {
3872 drawcol = dc.col[defaultrcs];
3873 g.fg = defaultfg;
3874 g.bg = defaultrcs;
3875 } else {
3876 drawcol = dc.col[defaultcs];
3877 }
3878 }
3879
3880 if (IS_SET(MODE_HIDE))
3881 return;
3882
3883 /* draw the new one */
3884 if (xw.state & WIN_FOCUSED) {
3885 switch (xw.cursor) {
3886 case 7: /* st extension: snowman */
3887 utf8decode("☃", &g.u, UTF_SIZ);
3888 case 0: /* Blinking Block */
3889 case 1: /* Blinking Block (Default) */
3890 case 2: /* Steady Block */
3891 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
3892 xdrawglyph(g, term.c.x, term.c.y);
3893 break;
3894 case 3: /* Blinking Underline */
3895 case 4: /* Steady Underline */
3896 XftDrawRect(xw.draw, &drawcol,
3897 borderpx + curx * xw.cw,
3898 borderpx + (term.c.y + 1) * xw.ch - \
3899 cursorthickness,
3900 xw.cw, cursorthickness);
3901 break;
3902 case 5: /* Blinking bar */
3903 case 6: /* Steady bar */
3904 XftDrawRect(xw.draw, &drawcol,
3905 borderpx + curx * xw.cw,
3906 borderpx + term.c.y * xw.ch,
3907 cursorthickness, xw.ch);
3908 break;
3909 }
3910 } else {
3911 XftDrawRect(xw.draw, &drawcol,
3912 borderpx + curx * xw.cw,
3913 borderpx + term.c.y * xw.ch,
3914 xw.cw - 1, 1);
3915 XftDrawRect(xw.draw, &drawcol,
3916 borderpx + curx * xw.cw,
3917 borderpx + term.c.y * xw.ch,
3918 1, xw.ch - 1);
3919 XftDrawRect(xw.draw, &drawcol,
3920 borderpx + (curx + 1) * xw.cw - 1,
3921 borderpx + term.c.y * xw.ch,
3922 1, xw.ch - 1);
3923 XftDrawRect(xw.draw, &drawcol,
3924 borderpx + curx * xw.cw,
3925 borderpx + (term.c.y + 1) * xw.ch - 1,
3926 xw.cw, 1);
3927 }
3928 oldx = curx, oldy = term.c.y;
3929 }
3930
3931
3932 void
3933 xsettitle(char *p)
3934 {
3935 XTextProperty prop;
3936
3937 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3938 &prop);
3939 XSetWMName(xw.dpy, xw.win, &prop);
3940 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3941 XFree(prop.value);
3942 }
3943
3944 void
3945 xresettitle(void)
3946 {
3947 xsettitle(opt_title ? opt_title : "st");
3948 }
3949
3950 void
3951 redraw(void)
3952 {
3953 tfulldirt();
3954 draw();
3955 }
3956
3957 void
3958 draw(void)
3959 {
3960 drawregion(0, 0, term.col, term.row);
3961 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3962 xw.h, 0, 0);
3963 XSetForeground(xw.dpy, dc.gc,
3964 dc.col[IS_SET(MODE_REVERSE)?
3965 defaultfg : defaultbg].pixel);
3966 }
3967
3968 void
3969 drawregion(int x1, int y1, int x2, int y2)
3970 {
3971 int i, x, y, ox, numspecs;
3972 Glyph base, new;
3973 XftGlyphFontSpec *specs;
3974 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3975
3976 if (!(xw.state & WIN_VISIBLE))
3977 return;
3978
3979 for (y = y1; y < y2; y++) {
3980 if (!term.dirty[y])
3981 continue;
3982
3983 xtermclear(0, y, term.col, y);
3984 term.dirty[y] = 0;
3985
3986 specs = term.specbuf;
3987 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
3988
3989 i = ox = 0;
3990 for (x = x1; x < x2 && i < numspecs; x++) {
3991 new = term.line[y][x];
3992 if (new.mode == ATTR_WDUMMY)
3993 continue;
3994 if (ena_sel && selected(x, y))
3995 new.mode ^= ATTR_REVERSE;
3996 if (i > 0 && ATTRCMP(base, new)) {
3997 xdrawglyphfontspecs(specs, base, i, ox, y);
3998 specs += i;
3999 numspecs -= i;
4000 i = 0;
4001 }
4002 if (i == 0) {
4003 ox = x;
4004 base = new;
4005 }
4006 i++;
4007 }
4008 if (i > 0)
4009 xdrawglyphfontspecs(specs, base, i, ox, y);
4010 }
4011 xdrawcursor();
4012 }
4013
4014 void
4015 expose(XEvent *ev)
4016 {
4017 redraw();
4018 }
4019
4020 void
4021 visibility(XEvent *ev)
4022 {
4023 XVisibilityEvent *e = &ev->xvisibility;
4024
4025 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
4026 }
4027
4028 void
4029 unmap(XEvent *ev)
4030 {
4031 xw.state &= ~WIN_VISIBLE;
4032 }
4033
4034 void
4035 xsetpointermotion(int set)
4036 {
4037 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
4038 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
4039 }
4040
4041 void
4042 xseturgency(int add)
4043 {
4044 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
4045
4046 MODBIT(h->flags, add, XUrgencyHint);
4047 XSetWMHints(xw.dpy, xw.win, h);
4048 XFree(h);
4049 }
4050
4051 void
4052 focus(XEvent *ev)
4053 {
4054 XFocusChangeEvent *e = &ev->xfocus;
4055
4056 if (e->mode == NotifyGrab)
4057 return;
4058
4059 if (ev->type == FocusIn) {
4060 XSetICFocus(xw.xic);
4061 xw.state |= WIN_FOCUSED;
4062 xseturgency(0);
4063 if (IS_SET(MODE_FOCUS))
4064 ttywrite("\033[I", 3);
4065 } else {
4066 XUnsetICFocus(xw.xic);
4067 xw.state &= ~WIN_FOCUSED;
4068 if (IS_SET(MODE_FOCUS))
4069 ttywrite("\033[O", 3);
4070 }
4071 }
4072
4073 int
4074 match(uint mask, uint state)
4075 {
4076 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
4077 }
4078
4079 void
4080 numlock(const Arg *dummy)
4081 {
4082 term.numlock ^= 1;
4083 }
4084
4085 char*
4086 kmap(KeySym k, uint state)
4087 {
4088 Key *kp;
4089 int i;
4090
4091 /* Check for mapped keys out of X11 function keys. */
4092 for (i = 0; i < LEN(mappedkeys); i++) {
4093 if (mappedkeys[i] == k)
4094 break;
4095 }
4096 if (i == LEN(mappedkeys)) {
4097 if ((k & 0xFFFF) < 0xFD00)
4098 return NULL;
4099 }
4100
4101 for (kp = key; kp < key + LEN(key); kp++) {
4102 if (kp->k != k)
4103 continue;
4104
4105 if (!match(kp->mask, state))
4106 continue;
4107
4108 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
4109 continue;
4110 if (term.numlock && kp->appkey == 2)
4111 continue;
4112
4113 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
4114 continue;
4115
4116 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
4117 continue;
4118
4119 return kp->s;
4120 }
4121
4122 return NULL;
4123 }
4124
4125 void
4126 kpress(XEvent *ev)
4127 {
4128 XKeyEvent *e = &ev->xkey;
4129 KeySym ksym;
4130 char buf[32], *customkey;
4131 int len;
4132 Rune c;
4133 Status status;
4134 Shortcut *bp;
4135
4136 if (IS_SET(MODE_KBDLOCK))
4137 return;
4138
4139 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
4140 /* 1. shortcuts */
4141 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
4142 if (ksym == bp->keysym && match(bp->mod, e->state)) {
4143 bp->func(&(bp->arg));
4144 return;
4145 }
4146 }
4147
4148 /* 2. custom keys from config.h */
4149 if ((customkey = kmap(ksym, e->state))) {
4150 ttysend(customkey, strlen(customkey));
4151 return;
4152 }
4153
4154 /* 3. composed string from input method */
4155 if (len == 0)
4156 return;
4157 if (len == 1 && e->state & Mod1Mask) {
4158 if (IS_SET(MODE_8BIT)) {
4159 if (*buf < 0177) {
4160 c = *buf | 0x80;
4161 len = utf8encode(c, buf);
4162 }
4163 } else {
4164 buf[1] = buf[0];
4165 buf[0] = '\033';
4166 len = 2;
4167 }
4168 }
4169 ttysend(buf, len);
4170 }
4171
4172
4173 void
4174 cmessage(XEvent *e)
4175 {
4176 /*
4177 * See xembed specs
4178 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
4179 */
4180 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
4181 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
4182 xw.state |= WIN_FOCUSED;
4183 xseturgency(0);
4184 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
4185 xw.state &= ~WIN_FOCUSED;
4186 }
4187 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
4188 /* Send SIGHUP to shell */
4189 kill(pid, SIGHUP);
4190 exit(0);
4191 }
4192 }
4193
4194 void
4195 cresize(int width, int height)
4196 {
4197 int col, row;
4198
4199 if (width != 0)
4200 xw.w = width;
4201 if (height != 0)
4202 xw.h = height;
4203
4204 col = (xw.w - 2 * borderpx) / xw.cw;
4205 row = (xw.h - 2 * borderpx) / xw.ch;
4206
4207 tresize(col, row);
4208 xresize(col, row);
4209 ttyresize();
4210 }
4211
4212 void
4213 resize(XEvent *e)
4214 {
4215 if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
4216 return;
4217
4218 cresize(e->xconfigure.width, e->xconfigure.height);
4219 }
4220
4221 void
4222 run(void)
4223 {
4224 XEvent ev;
4225 int w = xw.w, h = xw.h;
4226 fd_set rfd;
4227 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
4228 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
4229 long deltatime;
4230
4231 /* Waiting for window mapping */
4232 do {
4233 XNextEvent(xw.dpy, &ev);
4234 /*
4235 * This XFilterEvent call is required because of XOpenIM. It
4236 * does filter out the key event and some client message for
4237 * the input method too.
4238 */
4239 if (XFilterEvent(&ev, None))
4240 continue;
4241 if (ev.type == ConfigureNotify) {
4242 w = ev.xconfigure.width;
4243 h = ev.xconfigure.height;
4244 }
4245 } while (ev.type != MapNotify);
4246
4247 ttynew();
4248 cresize(w, h);
4249
4250 clock_gettime(CLOCK_MONOTONIC, &last);
4251 lastblink = last;
4252
4253 for (xev = actionfps;;) {
4254 FD_ZERO(&rfd);
4255 FD_SET(cmdfd, &rfd);
4256 FD_SET(xfd, &rfd);
4257
4258 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
4259 if (errno == EINTR)
4260 continue;
4261 die("select failed: %s\n", strerror(errno));
4262 }
4263 if (FD_ISSET(cmdfd, &rfd)) {
4264 ttyread();
4265 if (blinktimeout) {
4266 blinkset = tattrset(ATTR_BLINK);
4267 if (!blinkset)
4268 MODBIT(term.mode, 0, MODE_BLINK);
4269 }
4270 }
4271
4272 if (FD_ISSET(xfd, &rfd))
4273 xev = actionfps;
4274
4275 clock_gettime(CLOCK_MONOTONIC, &now);
4276 drawtimeout.tv_sec = 0;
4277 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
4278 tv = &drawtimeout;
4279
4280 dodraw = 0;
4281 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
4282 tsetdirtattr(ATTR_BLINK);
4283 term.mode ^= MODE_BLINK;
4284 lastblink = now;
4285 dodraw = 1;
4286 }
4287 deltatime = TIMEDIFF(now, last);
4288 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
4289 dodraw = 1;
4290 last = now;
4291 }
4292
4293 if (dodraw) {
4294 while (XPending(xw.dpy)) {
4295 XNextEvent(xw.dpy, &ev);
4296 if (XFilterEvent(&ev, None))
4297 continue;
4298 if (handler[ev.type])
4299 (handler[ev.type])(&ev);
4300 }
4301
4302 draw();
4303 XFlush(xw.dpy);
4304
4305 if (xev && !FD_ISSET(xfd, &rfd))
4306 xev--;
4307 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
4308 if (blinkset) {
4309 if (TIMEDIFF(now, lastblink) \
4310 > blinktimeout) {
4311 drawtimeout.tv_nsec = 1000;
4312 } else {
4313 drawtimeout.tv_nsec = (1E6 * \
4314 (blinktimeout - \
4315 TIMEDIFF(now,
4316 lastblink)));
4317 }
4318 drawtimeout.tv_sec = \
4319 drawtimeout.tv_nsec / 1E9;
4320 drawtimeout.tv_nsec %= (long)1E9;
4321 } else {
4322 tv = NULL;
4323 }
4324 }
4325 }
4326 }
4327 }
4328
4329 void
4330 usage(void)
4331 {
4332 die("%s " VERSION " (c) 2010-2016 st engineers\n"
4333 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
4334 " [-i] [-t title] [-T title] [-w windowid] [-e command ...]"
4335 " [command ...]\n"
4336 " st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
4337 " [-i] [-t title] [-T title] [-w windowid] -l line"
4338 " [stty_args ...]\n",
4339 argv0);
4340 }
4341
4342 int
4343 main(int argc, char *argv[])
4344 {
4345 uint cols = 80, rows = 24;
4346
4347 xw.l = xw.t = 0;
4348 xw.isfixed = False;
4349 xw.cursor = cursorshape;
4350
4351 ARGBEGIN {
4352 case 'a':
4353 allowaltscreen = 0;
4354 break;
4355 case 'c':
4356 opt_class = EARGF(usage());
4357 break;
4358 case 'e':
4359 if (argc > 0)
4360 --argc, ++argv;
4361 goto run;
4362 case 'f':
4363 opt_font = EARGF(usage());
4364 break;
4365 case 'g':
4366 xw.gm = XParseGeometry(EARGF(usage()),
4367 &xw.l, &xw.t, &cols, &rows);
4368 break;
4369 case 'i':
4370 xw.isfixed = 1;
4371 break;
4372 case 'o':
4373 opt_io = EARGF(usage());
4374 break;
4375 case 'l':
4376 opt_line = EARGF(usage());
4377 break;
4378 case 't':
4379 case 'T':
4380 opt_title = EARGF(usage());
4381 break;
4382 case 'w':
4383 opt_embed = EARGF(usage());
4384 break;
4385 case 'v':
4386 default:
4387 usage();
4388 } ARGEND;
4389
4390 run:
4391 if (argc > 0) {
4392 /* eat all remaining arguments */
4393 opt_cmd = argv;
4394 if (!opt_title && !opt_line)
4395 opt_title = basename(xstrdup(argv[0]));
4396 }
4397 setlocale(LC_CTYPE, "");
4398 XSetLocaleModifiers("");
4399 tnew(MAX(cols, 1), MAX(rows, 1));
4400 xinit();
4401 selinit();
4402 run();
4403
4404 return 0;
4405 }
4406