Xinqi Bao's Git

projects / st.git / blob


e885a7d5b14ef2787a860ebc5b942d8473d7b0c9
[st.git] / st.c
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 } Mousekey;
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 void 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 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
699 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
700 sel.mode = SEL_IDLE;
701 sel.ob.x = -1;
702 sel.primary = NULL;
703 sel.clipboard = NULL;
704 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
705 if (sel.xtarget == None)
706 sel.xtarget = XA_STRING;
707 }
708
709 int
710 x2col(int x)
711 {
712 x -= borderpx;
713 x /= xw.cw;
714
715 return LIMIT(x, 0, term.col-1);
716 }
717
718 int
719 y2row(int y)
720 {
721 y -= borderpx;
722 y /= xw.ch;
723
724 return LIMIT(y, 0, term.row-1);
725 }
726
727 int
728 tlinelen(int y)
729 {
730 int i = term.col;
731
732 if (term.line[y][i - 1].mode & ATTR_WRAP)
733 return i;
734
735 while (i > 0 && term.line[y][i - 1].u == ' ')
736 --i;
737
738 return i;
739 }
740
741 void
742 selnormalize(void)
743 {
744 int i;
745
746 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
747 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
748 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
749 } else {
750 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
751 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
752 }
753 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
754 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
755
756 selsnap(&sel.nb.x, &sel.nb.y, -1);
757 selsnap(&sel.ne.x, &sel.ne.y, +1);
758
759 /* expand selection over line breaks */
760 if (sel.type == SEL_RECTANGULAR)
761 return;
762 i = tlinelen(sel.nb.y);
763 if (i < sel.nb.x)
764 sel.nb.x = i;
765 if (tlinelen(sel.ne.y) <= sel.ne.x)
766 sel.ne.x = term.col - 1;
767 }
768
769 int
770 selected(int x, int y)
771 {
772 if (sel.mode == SEL_EMPTY)
773 return 0;
774
775 if (sel.type == SEL_RECTANGULAR)
776 return BETWEEN(y, sel.nb.y, sel.ne.y)
777 && BETWEEN(x, sel.nb.x, sel.ne.x);
778
779 return BETWEEN(y, sel.nb.y, sel.ne.y)
780 && (y != sel.nb.y || x >= sel.nb.x)
781 && (y != sel.ne.y || x <= sel.ne.x);
782 }
783
784 void
785 selsnap(int *x, int *y, int direction)
786 {
787 int newx, newy, xt, yt;
788 int delim, prevdelim;
789 Glyph *gp, *prevgp;
790
791 switch (sel.snap) {
792 case SNAP_WORD:
793 /*
794 * Snap around if the word wraps around at the end or
795 * beginning of a line.
796 */
797 prevgp = &term.line[*y][*x];
798 prevdelim = ISDELIM(prevgp->u);
799 for (;;) {
800 newx = *x + direction;
801 newy = *y;
802 if (!BETWEEN(newx, 0, term.col - 1)) {
803 newy += direction;
804 newx = (newx + term.col) % term.col;
805 if (!BETWEEN(newy, 0, term.row - 1))
806 break;
807
808 if (direction > 0)
809 yt = *y, xt = *x;
810 else
811 yt = newy, xt = newx;
812 if (!(term.line[yt][xt].mode & ATTR_WRAP))
813 break;
814 }
815
816 if (newx >= tlinelen(newy))
817 break;
818
819 gp = &term.line[newy][newx];
820 delim = ISDELIM(gp->u);
821 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
822 || (delim && gp->u != prevgp->u)))
823 break;
824
825 *x = newx;
826 *y = newy;
827 prevgp = gp;
828 prevdelim = delim;
829 }
830 break;
831 case SNAP_LINE:
832 /*
833 * Snap around if the the previous line or the current one
834 * has set ATTR_WRAP at its end. Then the whole next or
835 * previous line will be selected.
836 */
837 *x = (direction < 0) ? 0 : term.col - 1;
838 if (direction < 0) {
839 for (; *y > 0; *y += direction) {
840 if (!(term.line[*y-1][term.col-1].mode
841 & ATTR_WRAP)) {
842 break;
843 }
844 }
845 } else if (direction > 0) {
846 for (; *y < term.row-1; *y += direction) {
847 if (!(term.line[*y][term.col-1].mode
848 & ATTR_WRAP)) {
849 break;
850 }
851 }
852 }
853 break;
854 }
855 }
856
857 void
858 getbuttoninfo(XEvent *e)
859 {
860 int type;
861 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
862
863 sel.alt = IS_SET(MODE_ALTSCREEN);
864
865 sel.oe.x = x2col(e->xbutton.x);
866 sel.oe.y = y2row(e->xbutton.y);
867 selnormalize();
868
869 sel.type = SEL_REGULAR;
870 for (type = 1; type < LEN(selmasks); ++type) {
871 if (match(selmasks[type], state)) {
872 sel.type = type;
873 break;
874 }
875 }
876 }
877
878 void
879 mousereport(XEvent *e)
880 {
881 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
882 button = e->xbutton.button, state = e->xbutton.state,
883 len;
884 char buf[40];
885 static int ox, oy;
886
887 /* from urxvt */
888 if (e->xbutton.type == MotionNotify) {
889 if (x == ox && y == oy)
890 return;
891 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
892 return;
893 /* MOUSE_MOTION: no reporting if no button is pressed */
894 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
895 return;
896
897 button = oldbutton + 32;
898 ox = x;
899 oy = y;
900 } else {
901 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
902 button = 3;
903 } else {
904 button -= Button1;
905 if (button >= 3)
906 button += 64 - 3;
907 }
908 if (e->xbutton.type == ButtonPress) {
909 oldbutton = button;
910 ox = x;
911 oy = y;
912 } else if (e->xbutton.type == ButtonRelease) {
913 oldbutton = 3;
914 /* MODE_MOUSEX10: no button release reporting */
915 if (IS_SET(MODE_MOUSEX10))
916 return;
917 if (button == 64 || button == 65)
918 return;
919 }
920 }
921
922 if (!IS_SET(MODE_MOUSEX10)) {
923 button += ((state & ShiftMask ) ? 4 : 0)
924 + ((state & Mod4Mask ) ? 8 : 0)
925 + ((state & ControlMask) ? 16 : 0);
926 }
927
928 if (IS_SET(MODE_MOUSESGR)) {
929 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
930 button, x+1, y+1,
931 e->xbutton.type == ButtonRelease ? 'm' : 'M');
932 } else if (x < 223 && y < 223) {
933 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
934 32+button, 32+x+1, 32+y+1);
935 } else {
936 return;
937 }
938
939 ttywrite(buf, len);
940 }
941
942 void
943 bpress(XEvent *e)
944 {
945 struct timespec now;
946 Mousekey *mk;
947
948 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
949 mousereport(e);
950 return;
951 }
952
953 for (mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
954 if (e->xbutton.button == mk->b
955 && match(mk->mask, e->xbutton.state)) {
956 ttysend(mk->s, strlen(mk->s));
957 return;
958 }
959 }
960
961 if (e->xbutton.button == Button1) {
962 clock_gettime(CLOCK_MONOTONIC, &now);
963
964 /* Clear previous selection, logically and visually. */
965 selclear(NULL);
966 sel.mode = SEL_EMPTY;
967 sel.type = SEL_REGULAR;
968 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
969 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
970
971 /*
972 * If the user clicks below predefined timeouts specific
973 * snapping behaviour is exposed.
974 */
975 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
976 sel.snap = SNAP_LINE;
977 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
978 sel.snap = SNAP_WORD;
979 } else {
980 sel.snap = 0;
981 }
982 selnormalize();
983
984 if (sel.snap != 0)
985 sel.mode = SEL_READY;
986 tsetdirt(sel.nb.y, sel.ne.y);
987 sel.tclick2 = sel.tclick1;
988 sel.tclick1 = now;
989 }
990 }
991
992 char *
993 getsel(void)
994 {
995 char *str, *ptr;
996 int y, bufsize, lastx, linelen;
997 Glyph *gp, *last;
998
999 if (sel.ob.x == -1)
1000 return NULL;
1001
1002 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
1003 ptr = str = xmalloc(bufsize);
1004
1005 /* append every set & selected glyph to the selection */
1006 for (y = sel.nb.y; y <= sel.ne.y; y++) {
1007 if ((linelen = tlinelen(y)) == 0) {
1008 *ptr++ = '\n';
1009 continue;
1010 }
1011
1012 if (sel.type == SEL_RECTANGULAR) {
1013 gp = &term.line[y][sel.nb.x];
1014 lastx = sel.ne.x;
1015 } else {
1016 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
1017 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
1018 }
1019 last = &term.line[y][MIN(lastx, linelen-1)];
1020 while (last >= gp && last->u == ' ')
1021 --last;
1022
1023 for ( ; gp <= last; ++gp) {
1024 if (gp->mode & ATTR_WDUMMY)
1025 continue;
1026
1027 ptr += utf8encode(gp->u, ptr);
1028 }
1029
1030 /*
1031 * Copy and pasting of line endings is inconsistent
1032 * in the inconsistent terminal and GUI world.
1033 * The best solution seems like to produce '\n' when
1034 * something is copied from st and convert '\n' to
1035 * '\r', when something to be pasted is received by
1036 * st.
1037 * FIXME: Fix the computer world.
1038 */
1039 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
1040 *ptr++ = '\n';
1041 }
1042 *ptr = 0;
1043 return str;
1044 }
1045
1046 void
1047 selcopy(Time t)
1048 {
1049 xsetsel(getsel(), t);
1050 }
1051
1052 void
1053 propnotify(XEvent *e)
1054 {
1055 XPropertyEvent *xpev;
1056 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1057
1058 xpev = &e->xproperty;
1059 if (xpev->state == PropertyNewValue &&
1060 (xpev->atom == XA_PRIMARY ||
1061 xpev->atom == clipboard)) {
1062 selnotify(e);
1063 }
1064 }
1065
1066 void
1067 selnotify(XEvent *e)
1068 {
1069 ulong nitems, ofs, rem;
1070 int format;
1071 uchar *data, *last, *repl;
1072 Atom type, incratom, property;
1073
1074 incratom = XInternAtom(xw.dpy, "INCR", 0);
1075
1076 ofs = 0;
1077 if (e->type == SelectionNotify) {
1078 property = e->xselection.property;
1079 } else if(e->type == PropertyNotify) {
1080 property = e->xproperty.atom;
1081 } else {
1082 return;
1083 }
1084 if (property == None)
1085 return;
1086
1087 do {
1088 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
1089 BUFSIZ/4, False, AnyPropertyType,
1090 &type, &format, &nitems, &rem,
1091 &data)) {
1092 fprintf(stderr, "Clipboard allocation failed\n");
1093 return;
1094 }
1095
1096 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
1097 /*
1098 * If there is some PropertyNotify with no data, then
1099 * this is the signal of the selection owner that all
1100 * data has been transferred. We won't need to receive
1101 * PropertyNotify events anymore.
1102 */
1103 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
1104 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1105 &xw.attrs);
1106 }
1107
1108 if (type == incratom) {
1109 /*
1110 * Activate the PropertyNotify events so we receive
1111 * when the selection owner does send us the next
1112 * chunk of data.
1113 */
1114 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
1115 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1116 &xw.attrs);
1117
1118 /*
1119 * Deleting the property is the transfer start signal.
1120 */
1121 XDeleteProperty(xw.dpy, xw.win, (int)property);
1122 continue;
1123 }
1124
1125 /*
1126 * As seen in getsel:
1127 * Line endings are inconsistent in the terminal and GUI world
1128 * copy and pasting. When receiving some selection data,
1129 * replace all '\n' with '\r'.
1130 * FIXME: Fix the computer world.
1131 */
1132 repl = data;
1133 last = data + nitems * format / 8;
1134 while ((repl = memchr(repl, '\n', last - repl))) {
1135 *repl++ = '\r';
1136 }
1137
1138 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
1139 ttywrite("\033[200~", 6);
1140 ttysend((char *)data, nitems * format / 8);
1141 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
1142 ttywrite("\033[201~", 6);
1143 XFree(data);
1144 /* number of 32-bit chunks returned */
1145 ofs += nitems * format / 32;
1146 } while (rem > 0);
1147
1148 /*
1149 * Deleting the property again tells the selection owner to send the
1150 * next data chunk in the property.
1151 */
1152 if (e->type == PropertyNotify)
1153 XDeleteProperty(xw.dpy, xw.win, (int)property);
1154 }
1155
1156 void
1157 selpaste(const Arg *dummy)
1158 {
1159 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1160 xw.win, CurrentTime);
1161 }
1162
1163 void
1164 clipcopy(const Arg *dummy)
1165 {
1166 Atom clipboard;
1167
1168 if (sel.clipboard != NULL)
1169 free(sel.clipboard);
1170
1171 if (sel.primary != NULL) {
1172 sel.clipboard = xstrdup(sel.primary);
1173 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1174 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1175 }
1176 }
1177
1178 void
1179 clippaste(const Arg *dummy)
1180 {
1181 Atom clipboard;
1182
1183 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1184 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1185 xw.win, CurrentTime);
1186 }
1187
1188 void
1189 selclear(XEvent *e)
1190 {
1191 if (sel.ob.x == -1)
1192 return;
1193 sel.mode = SEL_IDLE;
1194 sel.ob.x = -1;
1195 tsetdirt(sel.nb.y, sel.ne.y);
1196 }
1197
1198 void
1199 selrequest(XEvent *e)
1200 {
1201 XSelectionRequestEvent *xsre;
1202 XSelectionEvent xev;
1203 Atom xa_targets, string, clipboard;
1204 char *seltext;
1205
1206 xsre = (XSelectionRequestEvent *) e;
1207 xev.type = SelectionNotify;
1208 xev.requestor = xsre->requestor;
1209 xev.selection = xsre->selection;
1210 xev.target = xsre->target;
1211 xev.time = xsre->time;
1212 if (xsre->property == None)
1213 xsre->property = xsre->target;
1214
1215 /* reject */
1216 xev.property = None;
1217
1218 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1219 if (xsre->target == xa_targets) {
1220 /* respond with the supported type */
1221 string = sel.xtarget;
1222 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1223 XA_ATOM, 32, PropModeReplace,
1224 (uchar *) &string, 1);
1225 xev.property = xsre->property;
1226 } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1227 /*
1228 * xith XA_STRING non ascii characters may be incorrect in the
1229 * requestor. It is not our problem, use utf8.
1230 */
1231 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1232 if (xsre->selection == XA_PRIMARY) {
1233 seltext = sel.primary;
1234 } else if (xsre->selection == clipboard) {
1235 seltext = sel.clipboard;
1236 } else {
1237 fprintf(stderr,
1238 "Unhandled clipboard selection 0x%lx\n",
1239 xsre->selection);
1240 return;
1241 }
1242 if (seltext != NULL) {
1243 XChangeProperty(xsre->display, xsre->requestor,
1244 xsre->property, xsre->target,
1245 8, PropModeReplace,
1246 (uchar *)seltext, strlen(seltext));
1247 xev.property = xsre->property;
1248 }
1249 }
1250
1251 /* all done, send a notification to the listener */
1252 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
1253 fprintf(stderr, "Error sending SelectionNotify event\n");
1254 }
1255
1256 void
1257 xsetsel(char *str, Time t)
1258 {
1259 free(sel.primary);
1260 sel.primary = str;
1261
1262 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1263 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1264 selclear(0);
1265 }
1266
1267 void
1268 brelease(XEvent *e)
1269 {
1270 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1271 mousereport(e);
1272 return;
1273 }
1274
1275 if (e->xbutton.button == Button2) {
1276 selpaste(NULL);
1277 } else if (e->xbutton.button == Button1) {
1278 if (sel.mode == SEL_READY) {
1279 getbuttoninfo(e);
1280 selcopy(e->xbutton.time);
1281 } else
1282 selclear(NULL);
1283 sel.mode = SEL_IDLE;
1284 tsetdirt(sel.nb.y, sel.ne.y);
1285 }
1286 }
1287
1288 void
1289 bmotion(XEvent *e)
1290 {
1291 int oldey, oldex, oldsby, oldsey;
1292
1293 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1294 mousereport(e);
1295 return;
1296 }
1297
1298 if (!sel.mode)
1299 return;
1300
1301 sel.mode = SEL_READY;
1302 oldey = sel.oe.y;
1303 oldex = sel.oe.x;
1304 oldsby = sel.nb.y;
1305 oldsey = sel.ne.y;
1306 getbuttoninfo(e);
1307
1308 if (oldey != sel.oe.y || oldex != sel.oe.x)
1309 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1310 }
1311
1312 void
1313 die(const char *errstr, ...)
1314 {
1315 va_list ap;
1316
1317 va_start(ap, errstr);
1318 vfprintf(stderr, errstr, ap);
1319 va_end(ap);
1320 exit(1);
1321 }
1322
1323 void
1324 execsh(void)
1325 {
1326 char **args, *sh, *prog;
1327 const struct passwd *pw;
1328 char buf[sizeof(long) * 8 + 1];
1329
1330 errno = 0;
1331 if ((pw = getpwuid(getuid())) == NULL) {
1332 if (errno)
1333 die("getpwuid:%s\n", strerror(errno));
1334 else
1335 die("who are you?\n");
1336 }
1337
1338 if ((sh = getenv("SHELL")) == NULL)
1339 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1340
1341 if (opt_cmd)
1342 prog = opt_cmd[0];
1343 else if (utmp)
1344 prog = utmp;
1345 else
1346 prog = sh;
1347 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1348
1349 snprintf(buf, sizeof(buf), "%lu", xw.win);
1350
1351 unsetenv("COLUMNS");
1352 unsetenv("LINES");
1353 unsetenv("TERMCAP");
1354 setenv("LOGNAME", pw->pw_name, 1);
1355 setenv("USER", pw->pw_name, 1);
1356 setenv("SHELL", sh, 1);
1357 setenv("HOME", pw->pw_dir, 1);
1358 setenv("TERM", termname, 1);
1359 setenv("WINDOWID", buf, 1);
1360
1361 signal(SIGCHLD, SIG_DFL);
1362 signal(SIGHUP, SIG_DFL);
1363 signal(SIGINT, SIG_DFL);
1364 signal(SIGQUIT, SIG_DFL);
1365 signal(SIGTERM, SIG_DFL);
1366 signal(SIGALRM, SIG_DFL);
1367
1368 execvp(prog, args);
1369 _exit(1);
1370 }
1371
1372 void
1373 sigchld(int a)
1374 {
1375 int stat;
1376 pid_t p;
1377
1378 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
1379 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1380
1381 if (pid != p)
1382 return;
1383
1384 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
1385 die("child finished with error '%d'\n", stat);
1386 exit(0);
1387 }
1388
1389
1390 void
1391 stty(void)
1392 {
1393 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1394 size_t n, siz;
1395
1396 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
1397 die("incorrect stty parameters\n");
1398 memcpy(cmd, stty_args, n);
1399 q = cmd + n;
1400 siz = sizeof(cmd) - n;
1401 for (p = opt_cmd; p && (s = *p); ++p) {
1402 if ((n = strlen(s)) > siz-1)
1403 die("stty parameter length too long\n");
1404 *q++ = ' ';
1405 q = memcpy(q, s, n);
1406 q += n;
1407 siz-= n + 1;
1408 }
1409 *q = '\0';
1410 if (system(cmd) != 0)
1411 perror("Couldn't call stty");
1412 }
1413
1414 void
1415 ttynew(void)
1416 {
1417 int m, s;
1418 struct winsize w = {term.row, term.col, 0, 0};
1419
1420 if (opt_io) {
1421 term.mode |= MODE_PRINT;
1422 iofd = (!strcmp(opt_io, "-")) ?
1423 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
1424 if (iofd < 0) {
1425 fprintf(stderr, "Error opening %s:%s\n",
1426 opt_io, strerror(errno));
1427 }
1428 }
1429
1430 if (opt_line) {
1431 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
1432 die("open line failed: %s\n", strerror(errno));
1433 dup2(cmdfd, 0);
1434 stty();
1435 return;
1436 }
1437
1438 /* seems to work fine on linux, openbsd and freebsd */
1439 if (openpty(&m, &s, NULL, NULL, &w) < 0)
1440 die("openpty failed: %s\n", strerror(errno));
1441
1442 switch (pid = fork()) {
1443 case -1:
1444 die("fork failed\n");
1445 break;
1446 case 0:
1447 close(iofd);
1448 setsid(); /* create a new process group */
1449 dup2(s, 0);
1450 dup2(s, 1);
1451 dup2(s, 2);
1452 if (ioctl(s, TIOCSCTTY, NULL) < 0)
1453 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1454 close(s);
1455 close(m);
1456 execsh();
1457 break;
1458 default:
1459 close(s);
1460 cmdfd = m;
1461 signal(SIGCHLD, sigchld);
1462 break;
1463 }
1464 }
1465
1466 void
1467 ttyread(void)
1468 {
1469 static char buf[BUFSIZ];
1470 static int buflen = 0;
1471 char *ptr;
1472 int charsize; /* size of utf8 char in bytes */
1473 Rune unicodep;
1474 int ret;
1475
1476 /* append read bytes to unprocessed bytes */
1477 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1478 die("Couldn't read from shell: %s\n", strerror(errno));
1479
1480 /* process every complete utf8 char */
1481 buflen += ret;
1482 ptr = buf;
1483 while ((charsize = utf8decode(ptr, &unicodep, buflen))) {
1484 tputc(unicodep);
1485 ptr += charsize;
1486 buflen -= charsize;
1487 }
1488
1489 /* keep any uncomplete utf8 char for the next call */
1490 memmove(buf, ptr, buflen);
1491 }
1492
1493 void
1494 ttywrite(const char *s, size_t n)
1495 {
1496 fd_set wfd;
1497 struct timespec tv;
1498 ssize_t r;
1499
1500 /*
1501 * Remember that we are using a pty, which might be a modem line.
1502 * Writing too much will clog the line. That's why we are doing this
1503 * dance.
1504 * FIXME: Migrate the world to Plan 9.
1505 */
1506 while (n > 0) {
1507 FD_ZERO(&wfd);
1508 FD_SET(cmdfd, &wfd);
1509 tv.tv_sec = 0;
1510 tv.tv_nsec = 0;
1511
1512 /* Check if we can write. */
1513 if (pselect(cmdfd+1, NULL, &wfd, NULL, &tv, NULL) < 0) {
1514 if (errno == EINTR)
1515 continue;
1516 die("select failed: %s\n", strerror(errno));
1517 }
1518 if(!FD_ISSET(cmdfd, &wfd)) {
1519 /* No, then free some buffer space. */
1520 ttyread();
1521 } else {
1522 /*
1523 * Only write 256 bytes at maximum. This seems to be a
1524 * reasonable value for a serial line. Bigger values
1525 * might clog the I/O.
1526 */
1527 r = write(cmdfd, s, (n < 256)? n : 256);
1528 if (r < 0) {
1529 die("write error on tty: %s\n",
1530 strerror(errno));
1531 }
1532 if (r < n) {
1533 /*
1534 * We weren't able to write out everything.
1535 * This means the buffer is getting full
1536 * again. Empty it.
1537 */
1538 if (n < 256)
1539 ttyread();
1540 n -= r;
1541 s += r;
1542 } else {
1543 /* All bytes have been written. */
1544 break;
1545 }
1546 }
1547 }
1548 }
1549
1550 void
1551 ttysend(char *s, size_t n)
1552 {
1553 int len;
1554 Rune u;
1555
1556 ttywrite(s, n);
1557 if (IS_SET(MODE_ECHO))
1558 while ((len = utf8decode(s, &u, n)) > 0) {
1559 techo(u);
1560 n -= len;
1561 s += len;
1562 }
1563 }
1564
1565 void
1566 ttyresize(void)
1567 {
1568 struct winsize w;
1569
1570 w.ws_row = term.row;
1571 w.ws_col = term.col;
1572 w.ws_xpixel = xw.tw;
1573 w.ws_ypixel = xw.th;
1574 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1575 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1576 }
1577
1578 int
1579 tattrset(int attr)
1580 {
1581 int i, j;
1582
1583 for (i = 0; i < term.row-1; i++) {
1584 for (j = 0; j < term.col-1; j++) {
1585 if (term.line[i][j].mode & attr)
1586 return 1;
1587 }
1588 }
1589
1590 return 0;
1591 }
1592
1593 void
1594 tsetdirt(int top, int bot)
1595 {
1596 int i;
1597
1598 LIMIT(top, 0, term.row-1);
1599 LIMIT(bot, 0, term.row-1);
1600
1601 for (i = top; i <= bot; i++)
1602 term.dirty[i] = 1;
1603 }
1604
1605 void
1606 tsetdirtattr(int attr)
1607 {
1608 int i, j;
1609
1610 for (i = 0; i < term.row-1; i++) {
1611 for (j = 0; j < term.col-1; j++) {
1612 if (term.line[i][j].mode & attr) {
1613 tsetdirt(i, i);
1614 break;
1615 }
1616 }
1617 }
1618 }
1619
1620 void
1621 tfulldirt(void)
1622 {
1623 tsetdirt(0, term.row-1);
1624 }
1625
1626 void
1627 tcursor(int mode)
1628 {
1629 static TCursor c[2];
1630 int alt = IS_SET(MODE_ALTSCREEN);
1631
1632 if (mode == CURSOR_SAVE) {
1633 c[alt] = term.c;
1634 } else if (mode == CURSOR_LOAD) {
1635 term.c = c[alt];
1636 tmoveto(c[alt].x, c[alt].y);
1637 }
1638 }
1639
1640 void
1641 treset(void)
1642 {
1643 uint i;
1644
1645 term.c = (TCursor){{
1646 .mode = ATTR_NULL,
1647 .fg = defaultfg,
1648 .bg = defaultbg
1649 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1650
1651 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1652 for (i = tabspaces; i < term.col; i += tabspaces)
1653 term.tabs[i] = 1;
1654 term.top = 0;
1655 term.bot = term.row - 1;
1656 term.mode = MODE_WRAP;
1657 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1658 term.charset = 0;
1659
1660 for (i = 0; i < 2; i++) {
1661 tmoveto(0, 0);
1662 tcursor(CURSOR_SAVE);
1663 tclearregion(0, 0, term.col-1, term.row-1);
1664 tswapscreen();
1665 }
1666 }
1667
1668 void
1669 tnew(int col, int row)
1670 {
1671 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1672 tresize(col, row);
1673 term.numlock = 1;
1674
1675 treset();
1676 }
1677
1678 void
1679 tswapscreen(void)
1680 {
1681 Line *tmp = term.line;
1682
1683 term.line = term.alt;
1684 term.alt = tmp;
1685 term.mode ^= MODE_ALTSCREEN;
1686 tfulldirt();
1687 }
1688
1689 void
1690 tscrolldown(int orig, int n)
1691 {
1692 int i;
1693 Line temp;
1694
1695 LIMIT(n, 0, term.bot-orig+1);
1696
1697 tsetdirt(orig, term.bot-n);
1698 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1699
1700 for (i = term.bot; i >= orig+n; i--) {
1701 temp = term.line[i];
1702 term.line[i] = term.line[i-n];
1703 term.line[i-n] = temp;
1704 }
1705
1706 selscroll(orig, n);
1707 }
1708
1709 void
1710 tscrollup(int orig, int n)
1711 {
1712 int i;
1713 Line temp;
1714
1715 LIMIT(n, 0, term.bot-orig+1);
1716
1717 tclearregion(0, orig, term.col-1, orig+n-1);
1718 tsetdirt(orig+n, term.bot);
1719
1720 for (i = orig; i <= term.bot-n; i++) {
1721 temp = term.line[i];
1722 term.line[i] = term.line[i+n];
1723 term.line[i+n] = temp;
1724 }
1725
1726 selscroll(orig, -n);
1727 }
1728
1729 void
1730 selscroll(int orig, int n)
1731 {
1732 if (sel.ob.x == -1)
1733 return;
1734
1735 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1736 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1737 selclear(NULL);
1738 return;
1739 }
1740 if (sel.type == SEL_RECTANGULAR) {
1741 if (sel.ob.y < term.top)
1742 sel.ob.y = term.top;
1743 if (sel.oe.y > term.bot)
1744 sel.oe.y = term.bot;
1745 } else {
1746 if (sel.ob.y < term.top) {
1747 sel.ob.y = term.top;
1748 sel.ob.x = 0;
1749 }
1750 if (sel.oe.y > term.bot) {
1751 sel.oe.y = term.bot;
1752 sel.oe.x = term.col;
1753 }
1754 }
1755 selnormalize();
1756 }
1757 }
1758
1759 void
1760 tnewline(int first_col)
1761 {
1762 int y = term.c.y;
1763
1764 if (y == term.bot) {
1765 tscrollup(term.top, 1);
1766 } else {
1767 y++;
1768 }
1769 tmoveto(first_col ? 0 : term.c.x, y);
1770 }
1771
1772 void
1773 csiparse(void)
1774 {
1775 char *p = csiescseq.buf, *np;
1776 long int v;
1777
1778 csiescseq.narg = 0;
1779 if (*p == '?') {
1780 csiescseq.priv = 1;
1781 p++;
1782 }
1783
1784 csiescseq.buf[csiescseq.len] = '\0';
1785 while (p < csiescseq.buf+csiescseq.len) {
1786 np = NULL;
1787 v = strtol(p, &np, 10);
1788 if (np == p)
1789 v = 0;
1790 if (v == LONG_MAX || v == LONG_MIN)
1791 v = -1;
1792 csiescseq.arg[csiescseq.narg++] = v;
1793 p = np;
1794 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1795 break;
1796 p++;
1797 }
1798 csiescseq.mode[0] = *p++;
1799 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1800 }
1801
1802 /* for absolute user moves, when decom is set */
1803 void
1804 tmoveato(int x, int y)
1805 {
1806 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1807 }
1808
1809 void
1810 tmoveto(int x, int y)
1811 {
1812 int miny, maxy;
1813
1814 if (term.c.state & CURSOR_ORIGIN) {
1815 miny = term.top;
1816 maxy = term.bot;
1817 } else {
1818 miny = 0;
1819 maxy = term.row - 1;
1820 }
1821 term.c.state &= ~CURSOR_WRAPNEXT;
1822 term.c.x = LIMIT(x, 0, term.col-1);
1823 term.c.y = LIMIT(y, miny, maxy);
1824 }
1825
1826 void
1827 tsetchar(Rune u, Glyph *attr, int x, int y)
1828 {
1829 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1830 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1831 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1832 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1833 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1834 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1835 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1836 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1837 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1838 };
1839
1840 /*
1841 * The table is proudly stolen from rxvt.
1842 */
1843 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1844 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1845 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1846
1847 if (term.line[y][x].mode & ATTR_WIDE) {
1848 if (x+1 < term.col) {
1849 term.line[y][x+1].u = ' ';
1850 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1851 }
1852 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1853 term.line[y][x-1].u = ' ';
1854 term.line[y][x-1].mode &= ~ATTR_WIDE;
1855 }
1856
1857 term.dirty[y] = 1;
1858 term.line[y][x] = *attr;
1859 term.line[y][x].u = u;
1860 }
1861
1862 void
1863 tclearregion(int x1, int y1, int x2, int y2)
1864 {
1865 int x, y, temp;
1866 Glyph *gp;
1867
1868 if (x1 > x2)
1869 temp = x1, x1 = x2, x2 = temp;
1870 if (y1 > y2)
1871 temp = y1, y1 = y2, y2 = temp;
1872
1873 LIMIT(x1, 0, term.col-1);
1874 LIMIT(x2, 0, term.col-1);
1875 LIMIT(y1, 0, term.row-1);
1876 LIMIT(y2, 0, term.row-1);
1877
1878 for (y = y1; y <= y2; y++) {
1879 term.dirty[y] = 1;
1880 for (x = x1; x <= x2; x++) {
1881 gp = &term.line[y][x];
1882 if (selected(x, y))
1883 selclear(NULL);
1884 gp->fg = term.c.attr.fg;
1885 gp->bg = term.c.attr.bg;
1886 gp->mode = 0;
1887 gp->u = ' ';
1888 }
1889 }
1890 }
1891
1892 void
1893 tdeletechar(int n)
1894 {
1895 int dst, src, size;
1896 Glyph *line;
1897
1898 LIMIT(n, 0, term.col - term.c.x);
1899
1900 dst = term.c.x;
1901 src = term.c.x + n;
1902 size = term.col - src;
1903 line = term.line[term.c.y];
1904
1905 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1906 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1907 }
1908
1909 void
1910 tinsertblank(int n)
1911 {
1912 int dst, src, size;
1913 Glyph *line;
1914
1915 LIMIT(n, 0, term.col - term.c.x);
1916
1917 dst = term.c.x + n;
1918 src = term.c.x;
1919 size = term.col - dst;
1920 line = term.line[term.c.y];
1921
1922 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1923 tclearregion(src, term.c.y, dst - 1, term.c.y);
1924 }
1925
1926 void
1927 tinsertblankline(int n)
1928 {
1929 if (BETWEEN(term.c.y, term.top, term.bot))
1930 tscrolldown(term.c.y, n);
1931 }
1932
1933 void
1934 tdeleteline(int n)
1935 {
1936 if (BETWEEN(term.c.y, term.top, term.bot))
1937 tscrollup(term.c.y, n);
1938 }
1939
1940 int32_t
1941 tdefcolor(int *attr, int *npar, int l)
1942 {
1943 int32_t idx = -1;
1944 uint r, g, b;
1945
1946 switch (attr[*npar + 1]) {
1947 case 2: /* direct color in RGB space */
1948 if (*npar + 4 >= l) {
1949 fprintf(stderr,
1950 "erresc(38): Incorrect number of parameters (%d)\n",
1951 *npar);
1952 break;
1953 }
1954 r = attr[*npar + 2];
1955 g = attr[*npar + 3];
1956 b = attr[*npar + 4];
1957 *npar += 4;
1958 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1959 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1960 r, g, b);
1961 else
1962 idx = TRUECOLOR(r, g, b);
1963 break;
1964 case 5: /* indexed color */
1965 if (*npar + 2 >= l) {
1966 fprintf(stderr,
1967 "erresc(38): Incorrect number of parameters (%d)\n",
1968 *npar);
1969 break;
1970 }
1971 *npar += 2;
1972 if (!BETWEEN(attr[*npar], 0, 255))
1973 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1974 else
1975 idx = attr[*npar];
1976 break;
1977 case 0: /* implemented defined (only foreground) */
1978 case 1: /* transparent */
1979 case 3: /* direct color in CMY space */
1980 case 4: /* direct color in CMYK space */
1981 default:
1982 fprintf(stderr,
1983 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1984 break;
1985 }
1986
1987 return idx;
1988 }
1989
1990 void
1991 tsetattr(int *attr, int l)
1992 {
1993 int i;
1994 int32_t idx;
1995
1996 for (i = 0; i < l; i++) {
1997 switch (attr[i]) {
1998 case 0:
1999 term.c.attr.mode &= ~(
2000 ATTR_BOLD |
2001 ATTR_FAINT |
2002 ATTR_ITALIC |
2003 ATTR_UNDERLINE |
2004 ATTR_BLINK |
2005 ATTR_REVERSE |
2006 ATTR_INVISIBLE |
2007 ATTR_STRUCK );
2008 term.c.attr.fg = defaultfg;
2009 term.c.attr.bg = defaultbg;
2010 break;
2011 case 1:
2012 term.c.attr.mode |= ATTR_BOLD;
2013 break;
2014 case 2:
2015 term.c.attr.mode |= ATTR_FAINT;
2016 break;
2017 case 3:
2018 term.c.attr.mode |= ATTR_ITALIC;
2019 break;
2020 case 4:
2021 term.c.attr.mode |= ATTR_UNDERLINE;
2022 break;
2023 case 5: /* slow blink */
2024 /* FALLTHROUGH */
2025 case 6: /* rapid blink */
2026 term.c.attr.mode |= ATTR_BLINK;
2027 break;
2028 case 7:
2029 term.c.attr.mode |= ATTR_REVERSE;
2030 break;
2031 case 8:
2032 term.c.attr.mode |= ATTR_INVISIBLE;
2033 break;
2034 case 9:
2035 term.c.attr.mode |= ATTR_STRUCK;
2036 break;
2037 case 22:
2038 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
2039 break;
2040 case 23:
2041 term.c.attr.mode &= ~ATTR_ITALIC;
2042 break;
2043 case 24:
2044 term.c.attr.mode &= ~ATTR_UNDERLINE;
2045 break;
2046 case 25:
2047 term.c.attr.mode &= ~ATTR_BLINK;
2048 break;
2049 case 27:
2050 term.c.attr.mode &= ~ATTR_REVERSE;
2051 break;
2052 case 28:
2053 term.c.attr.mode &= ~ATTR_INVISIBLE;
2054 break;
2055 case 29:
2056 term.c.attr.mode &= ~ATTR_STRUCK;
2057 break;
2058 case 38:
2059 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2060 term.c.attr.fg = idx;
2061 break;
2062 case 39:
2063 term.c.attr.fg = defaultfg;
2064 break;
2065 case 48:
2066 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2067 term.c.attr.bg = idx;
2068 break;
2069 case 49:
2070 term.c.attr.bg = defaultbg;
2071 break;
2072 default:
2073 if (BETWEEN(attr[i], 30, 37)) {
2074 term.c.attr.fg = attr[i] - 30;
2075 } else if (BETWEEN(attr[i], 40, 47)) {
2076 term.c.attr.bg = attr[i] - 40;
2077 } else if (BETWEEN(attr[i], 90, 97)) {
2078 term.c.attr.fg = attr[i] - 90 + 8;
2079 } else if (BETWEEN(attr[i], 100, 107)) {
2080 term.c.attr.bg = attr[i] - 100 + 8;
2081 } else {
2082 fprintf(stderr,
2083 "erresc(default): gfx attr %d unknown\n",
2084 attr[i]), csidump();
2085 }
2086 break;
2087 }
2088 }
2089 }
2090
2091 void
2092 tsetscroll(int t, int b)
2093 {
2094 int temp;
2095
2096 LIMIT(t, 0, term.row-1);
2097 LIMIT(b, 0, term.row-1);
2098 if (t > b) {
2099 temp = t;
2100 t = b;
2101 b = temp;
2102 }
2103 term.top = t;
2104 term.bot = b;
2105 }
2106
2107 void
2108 tsetmode(int priv, int set, int *args, int narg)
2109 {
2110 int *lim, mode;
2111 int alt;
2112
2113 for (lim = args + narg; args < lim; ++args) {
2114 if (priv) {
2115 switch (*args) {
2116 case 1: /* DECCKM -- Cursor key */
2117 MODBIT(term.mode, set, MODE_APPCURSOR);
2118 break;
2119 case 5: /* DECSCNM -- Reverse video */
2120 mode = term.mode;
2121 MODBIT(term.mode, set, MODE_REVERSE);
2122 if (mode != term.mode)
2123 redraw();
2124 break;
2125 case 6: /* DECOM -- Origin */
2126 MODBIT(term.c.state, set, CURSOR_ORIGIN);
2127 tmoveato(0, 0);
2128 break;
2129 case 7: /* DECAWM -- Auto wrap */
2130 MODBIT(term.mode, set, MODE_WRAP);
2131 break;
2132 case 0: /* Error (IGNORED) */
2133 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
2134 case 3: /* DECCOLM -- Column (IGNORED) */
2135 case 4: /* DECSCLM -- Scroll (IGNORED) */
2136 case 8: /* DECARM -- Auto repeat (IGNORED) */
2137 case 18: /* DECPFF -- Printer feed (IGNORED) */
2138 case 19: /* DECPEX -- Printer extent (IGNORED) */
2139 case 42: /* DECNRCM -- National characters (IGNORED) */
2140 case 12: /* att610 -- Start blinking cursor (IGNORED) */
2141 break;
2142 case 25: /* DECTCEM -- Text Cursor Enable Mode */
2143 MODBIT(term.mode, !set, MODE_HIDE);
2144 break;
2145 case 9: /* X10 mouse compatibility mode */
2146 xsetpointermotion(0);
2147 MODBIT(term.mode, 0, MODE_MOUSE);
2148 MODBIT(term.mode, set, MODE_MOUSEX10);
2149 break;
2150 case 1000: /* 1000: report button press */
2151 xsetpointermotion(0);
2152 MODBIT(term.mode, 0, MODE_MOUSE);
2153 MODBIT(term.mode, set, MODE_MOUSEBTN);
2154 break;
2155 case 1002: /* 1002: report motion on button press */
2156 xsetpointermotion(0);
2157 MODBIT(term.mode, 0, MODE_MOUSE);
2158 MODBIT(term.mode, set, MODE_MOUSEMOTION);
2159 break;
2160 case 1003: /* 1003: enable all mouse motions */
2161 xsetpointermotion(set);
2162 MODBIT(term.mode, 0, MODE_MOUSE);
2163 MODBIT(term.mode, set, MODE_MOUSEMANY);
2164 break;
2165 case 1004: /* 1004: send focus events to tty */
2166 MODBIT(term.mode, set, MODE_FOCUS);
2167 break;
2168 case 1006: /* 1006: extended reporting mode */
2169 MODBIT(term.mode, set, MODE_MOUSESGR);
2170 break;
2171 case 1034:
2172 MODBIT(term.mode, set, MODE_8BIT);
2173 break;
2174 case 1049: /* swap screen & set/restore cursor as xterm */
2175 if (!allowaltscreen)
2176 break;
2177 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2178 /* FALLTHROUGH */
2179 case 47: /* swap screen */
2180 case 1047:
2181 if (!allowaltscreen)
2182 break;
2183 alt = IS_SET(MODE_ALTSCREEN);
2184 if (alt) {
2185 tclearregion(0, 0, term.col-1,
2186 term.row-1);
2187 }
2188 if (set ^ alt) /* set is always 1 or 0 */
2189 tswapscreen();
2190 if (*args != 1049)
2191 break;
2192 /* FALLTHROUGH */
2193 case 1048:
2194 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2195 break;
2196 case 2004: /* 2004: bracketed paste mode */
2197 MODBIT(term.mode, set, MODE_BRCKTPASTE);
2198 break;
2199 /* Not implemented mouse modes. See comments there. */
2200 case 1001: /* mouse highlight mode; can hang the
2201 terminal by design when implemented. */
2202 case 1005: /* UTF-8 mouse mode; will confuse
2203 applications not supporting UTF-8
2204 and luit. */
2205 case 1015: /* urxvt mangled mouse mode; incompatible
2206 and can be mistaken for other control
2207 codes. */
2208 default:
2209 fprintf(stderr,
2210 "erresc: unknown private set/reset mode %d\n",
2211 *args);
2212 break;
2213 }
2214 } else {
2215 switch (*args) {
2216 case 0: /* Error (IGNORED) */
2217 break;
2218 case 2: /* KAM -- keyboard action */
2219 MODBIT(term.mode, set, MODE_KBDLOCK);
2220 break;
2221 case 4: /* IRM -- Insertion-replacement */
2222 MODBIT(term.mode, set, MODE_INSERT);
2223 break;
2224 case 12: /* SRM -- Send/Receive */
2225 MODBIT(term.mode, !set, MODE_ECHO);
2226 break;
2227 case 20: /* LNM -- Linefeed/new line */
2228 MODBIT(term.mode, set, MODE_CRLF);
2229 break;
2230 default:
2231 fprintf(stderr,
2232 "erresc: unknown set/reset mode %d\n",
2233 *args);
2234 break;
2235 }
2236 }
2237 }
2238 }
2239
2240 void
2241 csihandle(void)
2242 {
2243 char buf[40];
2244 int len;
2245
2246 switch (csiescseq.mode[0]) {
2247 default:
2248 unknown:
2249 fprintf(stderr, "erresc: unknown csi ");
2250 csidump();
2251 /* die(""); */
2252 break;
2253 case '@': /* ICH -- Insert <n> blank char */
2254 DEFAULT(csiescseq.arg[0], 1);
2255 tinsertblank(csiescseq.arg[0]);
2256 break;
2257 case 'A': /* CUU -- Cursor <n> Up */
2258 DEFAULT(csiescseq.arg[0], 1);
2259 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2260 break;
2261 case 'B': /* CUD -- Cursor <n> Down */
2262 case 'e': /* VPR --Cursor <n> Down */
2263 DEFAULT(csiescseq.arg[0], 1);
2264 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2265 break;
2266 case 'i': /* MC -- Media Copy */
2267 switch (csiescseq.arg[0]) {
2268 case 0:
2269 tdump();
2270 break;
2271 case 1:
2272 tdumpline(term.c.y);
2273 break;
2274 case 2:
2275 tdumpsel();
2276 break;
2277 case 4:
2278 term.mode &= ~MODE_PRINT;
2279 break;
2280 case 5:
2281 term.mode |= MODE_PRINT;
2282 break;
2283 }
2284 break;
2285 case 'c': /* DA -- Device Attributes */
2286 if (csiescseq.arg[0] == 0)
2287 ttywrite(vtiden, sizeof(vtiden) - 1);
2288 break;
2289 case 'C': /* CUF -- Cursor <n> Forward */
2290 case 'a': /* HPR -- Cursor <n> Forward */
2291 DEFAULT(csiescseq.arg[0], 1);
2292 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2293 break;
2294 case 'D': /* CUB -- Cursor <n> Backward */
2295 DEFAULT(csiescseq.arg[0], 1);
2296 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2297 break;
2298 case 'E': /* CNL -- Cursor <n> Down and first col */
2299 DEFAULT(csiescseq.arg[0], 1);
2300 tmoveto(0, term.c.y+csiescseq.arg[0]);
2301 break;
2302 case 'F': /* CPL -- Cursor <n> Up and first col */
2303 DEFAULT(csiescseq.arg[0], 1);
2304 tmoveto(0, term.c.y-csiescseq.arg[0]);
2305 break;
2306 case 'g': /* TBC -- Tabulation clear */
2307 switch (csiescseq.arg[0]) {
2308 case 0: /* clear current tab stop */
2309 term.tabs[term.c.x] = 0;
2310 break;
2311 case 3: /* clear all the tabs */
2312 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2313 break;
2314 default:
2315 goto unknown;
2316 }
2317 break;
2318 case 'G': /* CHA -- Move to <col> */
2319 case '`': /* HPA */
2320 DEFAULT(csiescseq.arg[0], 1);
2321 tmoveto(csiescseq.arg[0]-1, term.c.y);
2322 break;
2323 case 'H': /* CUP -- Move to <row> <col> */
2324 case 'f': /* HVP */
2325 DEFAULT(csiescseq.arg[0], 1);
2326 DEFAULT(csiescseq.arg[1], 1);
2327 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2328 break;
2329 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2330 DEFAULT(csiescseq.arg[0], 1);
2331 tputtab(csiescseq.arg[0]);
2332 break;
2333 case 'J': /* ED -- Clear screen */
2334 selclear(NULL);
2335 switch (csiescseq.arg[0]) {
2336 case 0: /* below */
2337 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2338 if (term.c.y < term.row-1) {
2339 tclearregion(0, term.c.y+1, term.col-1,
2340 term.row-1);
2341 }
2342 break;
2343 case 1: /* above */
2344 if (term.c.y > 1)
2345 tclearregion(0, 0, term.col-1, term.c.y-1);
2346 tclearregion(0, term.c.y, term.c.x, term.c.y);
2347 break;
2348 case 2: /* all */
2349 tclearregion(0, 0, term.col-1, term.row-1);
2350 break;
2351 default:
2352 goto unknown;
2353 }
2354 break;
2355 case 'K': /* EL -- Clear line */
2356 switch (csiescseq.arg[0]) {
2357 case 0: /* right */
2358 tclearregion(term.c.x, term.c.y, term.col-1,
2359 term.c.y);
2360 break;
2361 case 1: /* left */
2362 tclearregion(0, term.c.y, term.c.x, term.c.y);
2363 break;
2364 case 2: /* all */
2365 tclearregion(0, term.c.y, term.col-1, term.c.y);
2366 break;
2367 }
2368 break;
2369 case 'S': /* SU -- Scroll <n> line up */
2370 DEFAULT(csiescseq.arg[0], 1);
2371 tscrollup(term.top, csiescseq.arg[0]);
2372 break;
2373 case 'T': /* SD -- Scroll <n> line down */
2374 DEFAULT(csiescseq.arg[0], 1);
2375 tscrolldown(term.top, csiescseq.arg[0]);
2376 break;
2377 case 'L': /* IL -- Insert <n> blank lines */
2378 DEFAULT(csiescseq.arg[0], 1);
2379 tinsertblankline(csiescseq.arg[0]);
2380 break;
2381 case 'l': /* RM -- Reset Mode */
2382 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2383 break;
2384 case 'M': /* DL -- Delete <n> lines */
2385 DEFAULT(csiescseq.arg[0], 1);
2386 tdeleteline(csiescseq.arg[0]);
2387 break;
2388 case 'X': /* ECH -- Erase <n> char */
2389 DEFAULT(csiescseq.arg[0], 1);
2390 tclearregion(term.c.x, term.c.y,
2391 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2392 break;
2393 case 'P': /* DCH -- Delete <n> char */
2394 DEFAULT(csiescseq.arg[0], 1);
2395 tdeletechar(csiescseq.arg[0]);
2396 break;
2397 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2398 DEFAULT(csiescseq.arg[0], 1);
2399 tputtab(-csiescseq.arg[0]);
2400 break;
2401 case 'd': /* VPA -- Move to <row> */
2402 DEFAULT(csiescseq.arg[0], 1);
2403 tmoveato(term.c.x, csiescseq.arg[0]-1);
2404 break;
2405 case 'h': /* SM -- Set terminal mode */
2406 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2407 break;
2408 case 'm': /* SGR -- Terminal attribute (color) */
2409 tsetattr(csiescseq.arg, csiescseq.narg);
2410 break;
2411 case 'n': /* DSR – Device Status Report (cursor position) */
2412 if (csiescseq.arg[0] == 6) {
2413 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2414 term.c.y+1, term.c.x+1);
2415 ttywrite(buf, len);
2416 }
2417 break;
2418 case 'r': /* DECSTBM -- Set Scrolling Region */
2419 if (csiescseq.priv) {
2420 goto unknown;
2421 } else {
2422 DEFAULT(csiescseq.arg[0], 1);
2423 DEFAULT(csiescseq.arg[1], term.row);
2424 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2425 tmoveato(0, 0);
2426 }
2427 break;
2428 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2429 tcursor(CURSOR_SAVE);
2430 break;
2431 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2432 tcursor(CURSOR_LOAD);
2433 break;
2434 case ' ':
2435 switch (csiescseq.mode[1]) {
2436 case 'q': /* DECSCUSR -- Set Cursor Style */
2437 DEFAULT(csiescseq.arg[0], 1);
2438 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2439 goto unknown;
2440 }
2441 xw.cursor = csiescseq.arg[0];
2442 break;
2443 default:
2444 goto unknown;
2445 }
2446 break;
2447 }
2448 }
2449
2450 void
2451 csidump(void)
2452 {
2453 int i;
2454 uint c;
2455
2456 printf("ESC[");
2457 for (i = 0; i < csiescseq.len; i++) {
2458 c = csiescseq.buf[i] & 0xff;
2459 if (isprint(c)) {
2460 putchar(c);
2461 } else if (c == '\n') {
2462 printf("(\\n)");
2463 } else if (c == '\r') {
2464 printf("(\\r)");
2465 } else if (c == 0x1b) {
2466 printf("(\\e)");
2467 } else {
2468 printf("(%02x)", c);
2469 }
2470 }
2471 putchar('\n');
2472 }
2473
2474 void
2475 csireset(void)
2476 {
2477 memset(&csiescseq, 0, sizeof(csiescseq));
2478 }
2479
2480 void
2481 strhandle(void)
2482 {
2483 char *p = NULL;
2484 int j, narg, par;
2485
2486 term.esc &= ~(ESC_STR_END|ESC_STR);
2487 strparse();
2488 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2489
2490 switch (strescseq.type) {
2491 case ']': /* OSC -- Operating System Command */
2492 switch (par) {
2493 case 0:
2494 case 1:
2495 case 2:
2496 if (narg > 1)
2497 xsettitle(strescseq.args[1]);
2498 return;
2499 case 4: /* color set */
2500 if (narg < 3)
2501 break;
2502 p = strescseq.args[2];
2503 /* FALLTHROUGH */
2504 case 104: /* color reset, here p = NULL */
2505 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2506 if (xsetcolorname(j, p)) {
2507 fprintf(stderr, "erresc: invalid color %s\n", p);
2508 } else {
2509 /*
2510 * TODO if defaultbg color is changed, borders
2511 * are dirty
2512 */
2513 redraw();
2514 }
2515 return;
2516 }
2517 break;
2518 case 'k': /* old title set compatibility */
2519 xsettitle(strescseq.args[0]);
2520 return;
2521 case 'P': /* DCS -- Device Control String */
2522 case '_': /* APC -- Application Program Command */
2523 case '^': /* PM -- Privacy Message */
2524 return;
2525 }
2526
2527 fprintf(stderr, "erresc: unknown str ");
2528 strdump();
2529 }
2530
2531 void
2532 strparse(void)
2533 {
2534 int c;
2535 char *p = strescseq.buf;
2536
2537 strescseq.narg = 0;
2538 strescseq.buf[strescseq.len] = '\0';
2539
2540 if (*p == '\0')
2541 return;
2542
2543 while (strescseq.narg < STR_ARG_SIZ) {
2544 strescseq.args[strescseq.narg++] = p;
2545 while ((c = *p) != ';' && c != '\0')
2546 ++p;
2547 if (c == '\0')
2548 return;
2549 *p++ = '\0';
2550 }
2551 }
2552
2553 void
2554 strdump(void)
2555 {
2556 int i;
2557 uint c;
2558
2559 printf("ESC%c", strescseq.type);
2560 for (i = 0; i < strescseq.len; i++) {
2561 c = strescseq.buf[i] & 0xff;
2562 if (c == '\0') {
2563 return;
2564 } else if (isprint(c)) {
2565 putchar(c);
2566 } else if (c == '\n') {
2567 printf("(\\n)");
2568 } else if (c == '\r') {
2569 printf("(\\r)");
2570 } else if (c == 0x1b) {
2571 printf("(\\e)");
2572 } else {
2573 printf("(%02x)", c);
2574 }
2575 }
2576 printf("ESC\\\n");
2577 }
2578
2579 void
2580 strreset(void)
2581 {
2582 memset(&strescseq, 0, sizeof(strescseq));
2583 }
2584
2585 void
2586 sendbreak(const Arg *arg)
2587 {
2588 if (tcsendbreak(cmdfd, 0))
2589 perror("Error sending break");
2590 }
2591
2592 void
2593 tprinter(char *s, size_t len)
2594 {
2595 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
2596 fprintf(stderr, "Error writing in %s:%s\n",
2597 opt_io, strerror(errno));
2598 close(iofd);
2599 iofd = -1;
2600 }
2601 }
2602
2603 void
2604 toggleprinter(const Arg *arg)
2605 {
2606 term.mode ^= MODE_PRINT;
2607 }
2608
2609 void
2610 printscreen(const Arg *arg)
2611 {
2612 tdump();
2613 }
2614
2615 void
2616 printsel(const Arg *arg)
2617 {
2618 tdumpsel();
2619 }
2620
2621 void
2622 tdumpsel(void)
2623 {
2624 char *ptr;
2625
2626 if ((ptr = getsel())) {
2627 tprinter(ptr, strlen(ptr));
2628 free(ptr);
2629 }
2630 }
2631
2632 void
2633 tdumpline(int n)
2634 {
2635 char buf[UTF_SIZ];
2636 Glyph *bp, *end;
2637
2638 bp = &term.line[n][0];
2639 end = &bp[MIN(tlinelen(n), term.col) - 1];
2640 if (bp != end || bp->u != ' ') {
2641 for ( ;bp <= end; ++bp)
2642 tprinter(buf, utf8encode(bp->u, buf));
2643 }
2644 tprinter("\n", 1);
2645 }
2646
2647 void
2648 tdump(void)
2649 {
2650 int i;
2651
2652 for (i = 0; i < term.row; ++i)
2653 tdumpline(i);
2654 }
2655
2656 void
2657 tputtab(int n)
2658 {
2659 uint x = term.c.x;
2660
2661 if (n > 0) {
2662 while (x < term.col && n--)
2663 for (++x; x < term.col && !term.tabs[x]; ++x)
2664 /* nothing */ ;
2665 } else if (n < 0) {
2666 while (x > 0 && n++)
2667 for (--x; x > 0 && !term.tabs[x]; --x)
2668 /* nothing */ ;
2669 }
2670 term.c.x = LIMIT(x, 0, term.col-1);
2671 }
2672
2673 void
2674 techo(Rune u)
2675 {
2676 if (ISCONTROL(u)) { /* control code */
2677 if (u & 0x80) {
2678 u &= 0x7f;
2679 tputc('^');
2680 tputc('[');
2681 } else if (u != '\n' && u != '\r' && u != '\t') {
2682 u ^= 0x40;
2683 tputc('^');
2684 }
2685 }
2686 tputc(u);
2687 }
2688
2689 void
2690 tdeftran(char ascii)
2691 {
2692 static char cs[] = "0B";
2693 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2694 char *p;
2695
2696 if ((p = strchr(cs, ascii)) == NULL) {
2697 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2698 } else {
2699 term.trantbl[term.icharset] = vcs[p - cs];
2700 }
2701 }
2702
2703 void
2704 tdectest(char c)
2705 {
2706 int x, y;
2707
2708 if (c == '8') { /* DEC screen alignment test. */
2709 for (x = 0; x < term.col; ++x) {
2710 for (y = 0; y < term.row; ++y)
2711 tsetchar('E', &term.c.attr, x, y);
2712 }
2713 }
2714 }
2715
2716 void
2717 tstrsequence(uchar c)
2718 {
2719 switch (c) {
2720 case 0x90: /* DCS -- Device Control String */
2721 c = 'P';
2722 break;
2723 case 0x9f: /* APC -- Application Program Command */
2724 c = '_';
2725 break;
2726 case 0x9e: /* PM -- Privacy Message */
2727 c = '^';
2728 break;
2729 case 0x9d: /* OSC -- Operating System Command */
2730 c = ']';
2731 break;
2732 }
2733 strreset();
2734 strescseq.type = c;
2735 term.esc |= ESC_STR;
2736 }
2737
2738 void
2739 tcontrolcode(uchar ascii)
2740 {
2741 switch (ascii) {
2742 case '\t': /* HT */
2743 tputtab(1);
2744 return;
2745 case '\b': /* BS */
2746 tmoveto(term.c.x-1, term.c.y);
2747 return;
2748 case '\r': /* CR */
2749 tmoveto(0, term.c.y);
2750 return;
2751 case '\f': /* LF */
2752 case '\v': /* VT */
2753 case '\n': /* LF */
2754 /* go to first col if the mode is set */
2755 tnewline(IS_SET(MODE_CRLF));
2756 return;
2757 case '\a': /* BEL */
2758 if (term.esc & ESC_STR_END) {
2759 /* backwards compatibility to xterm */
2760 strhandle();
2761 } else {
2762 if (!(xw.state & WIN_FOCUSED))
2763 xseturgency(1);
2764 if (bellvolume)
2765 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2766 }
2767 break;
2768 case '\033': /* ESC */
2769 csireset();
2770 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2771 term.esc |= ESC_START;
2772 return;
2773 case '\016': /* SO (LS1 -- Locking shift 1) */
2774 case '\017': /* SI (LS0 -- Locking shift 0) */
2775 term.charset = 1 - (ascii - '\016');
2776 return;
2777 case '\032': /* SUB */
2778 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2779 case '\030': /* CAN */
2780 csireset();
2781 break;
2782 case '\005': /* ENQ (IGNORED) */
2783 case '\000': /* NUL (IGNORED) */
2784 case '\021': /* XON (IGNORED) */
2785 case '\023': /* XOFF (IGNORED) */
2786 case 0177: /* DEL (IGNORED) */
2787 return;
2788 case 0x80: /* TODO: PAD */
2789 case 0x81: /* TODO: HOP */
2790 case 0x82: /* TODO: BPH */
2791 case 0x83: /* TODO: NBH */
2792 case 0x84: /* TODO: IND */
2793 break;
2794 case 0x85: /* NEL -- Next line */
2795 tnewline(1); /* always go to first col */
2796 break;
2797 case 0x86: /* TODO: SSA */
2798 case 0x87: /* TODO: ESA */
2799 break;
2800 case 0x88: /* HTS -- Horizontal tab stop */
2801 term.tabs[term.c.x] = 1;
2802 break;
2803 case 0x89: /* TODO: HTJ */
2804 case 0x8a: /* TODO: VTS */
2805 case 0x8b: /* TODO: PLD */
2806 case 0x8c: /* TODO: PLU */
2807 case 0x8d: /* TODO: RI */
2808 case 0x8e: /* TODO: SS2 */
2809 case 0x8f: /* TODO: SS3 */
2810 case 0x91: /* TODO: PU1 */
2811 case 0x92: /* TODO: PU2 */
2812 case 0x93: /* TODO: STS */
2813 case 0x94: /* TODO: CCH */
2814 case 0x95: /* TODO: MW */
2815 case 0x96: /* TODO: SPA */
2816 case 0x97: /* TODO: EPA */
2817 case 0x98: /* TODO: SOS */
2818 case 0x99: /* TODO: SGCI */
2819 break;
2820 case 0x9a: /* DECID -- Identify Terminal */
2821 ttywrite(vtiden, sizeof(vtiden) - 1);
2822 break;
2823 case 0x9b: /* TODO: CSI */
2824 case 0x9c: /* TODO: ST */
2825 break;
2826 case 0x90: /* DCS -- Device Control String */
2827 case 0x9d: /* OSC -- Operating System Command */
2828 case 0x9e: /* PM -- Privacy Message */
2829 case 0x9f: /* APC -- Application Program Command */
2830 tstrsequence(ascii);
2831 return;
2832 }
2833 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2834 term.esc &= ~(ESC_STR_END|ESC_STR);
2835 }
2836
2837 /*
2838 * returns 1 when the sequence is finished and it hasn't to read
2839 * more characters for this sequence, otherwise 0
2840 */
2841 int
2842 eschandle(uchar ascii)
2843 {
2844 switch (ascii) {
2845 case '[':
2846 term.esc |= ESC_CSI;
2847 return 0;
2848 case '#':
2849 term.esc |= ESC_TEST;
2850 return 0;
2851 case 'P': /* DCS -- Device Control String */
2852 case '_': /* APC -- Application Program Command */
2853 case '^': /* PM -- Privacy Message */
2854 case ']': /* OSC -- Operating System Command */
2855 case 'k': /* old title set compatibility */
2856 tstrsequence(ascii);
2857 return 0;
2858 case 'n': /* LS2 -- Locking shift 2 */
2859 case 'o': /* LS3 -- Locking shift 3 */
2860 term.charset = 2 + (ascii - 'n');
2861 break;
2862 case '(': /* GZD4 -- set primary charset G0 */
2863 case ')': /* G1D4 -- set secondary charset G1 */
2864 case '*': /* G2D4 -- set tertiary charset G2 */
2865 case '+': /* G3D4 -- set quaternary charset G3 */
2866 term.icharset = ascii - '(';
2867 term.esc |= ESC_ALTCHARSET;
2868 return 0;
2869 case 'D': /* IND -- Linefeed */
2870 if (term.c.y == term.bot) {
2871 tscrollup(term.top, 1);
2872 } else {
2873 tmoveto(term.c.x, term.c.y+1);
2874 }
2875 break;
2876 case 'E': /* NEL -- Next line */
2877 tnewline(1); /* always go to first col */
2878 break;
2879 case 'H': /* HTS -- Horizontal tab stop */
2880 term.tabs[term.c.x] = 1;
2881 break;
2882 case 'M': /* RI -- Reverse index */
2883 if (term.c.y == term.top) {
2884 tscrolldown(term.top, 1);
2885 } else {
2886 tmoveto(term.c.x, term.c.y-1);
2887 }
2888 break;
2889 case 'Z': /* DECID -- Identify Terminal */
2890 ttywrite(vtiden, sizeof(vtiden) - 1);
2891 break;
2892 case 'c': /* RIS -- Reset to inital state */
2893 treset();
2894 xresettitle();
2895 xloadcols();
2896 break;
2897 case '=': /* DECPAM -- Application keypad */
2898 term.mode |= MODE_APPKEYPAD;
2899 break;
2900 case '>': /* DECPNM -- Normal keypad */
2901 term.mode &= ~MODE_APPKEYPAD;
2902 break;
2903 case '7': /* DECSC -- Save Cursor */
2904 tcursor(CURSOR_SAVE);
2905 break;
2906 case '8': /* DECRC -- Restore Cursor */
2907 tcursor(CURSOR_LOAD);
2908 break;
2909 case '\\': /* ST -- String Terminator */
2910 if (term.esc & ESC_STR_END)
2911 strhandle();
2912 break;
2913 default:
2914 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2915 (uchar) ascii, isprint(ascii)? ascii:'.');
2916 break;
2917 }
2918 return 1;
2919 }
2920
2921 void
2922 tputc(Rune u)
2923 {
2924 char c[UTF_SIZ];
2925 int control;
2926 int width, len;
2927 Glyph *gp;
2928
2929 control = ISCONTROL(u);
2930 len = utf8encode(u, c);
2931 if (!control && (width = wcwidth(u)) == -1) {
2932 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
2933 width = 1;
2934 }
2935
2936 if (IS_SET(MODE_PRINT))
2937 tprinter(c, len);
2938
2939 /*
2940 * STR sequence must be checked before anything else
2941 * because it uses all following characters until it
2942 * receives a ESC, a SUB, a ST or any other C1 control
2943 * character.
2944 */
2945 if (term.esc & ESC_STR) {
2946 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
2947 ISCONTROLC1(u)) {
2948 term.esc &= ~(ESC_START|ESC_STR);
2949 term.esc |= ESC_STR_END;
2950 } else if (strescseq.len + len < sizeof(strescseq.buf) - 1) {
2951 memmove(&strescseq.buf[strescseq.len], c, len);
2952 strescseq.len += len;
2953 return;
2954 } else {
2955 /*
2956 * Here is a bug in terminals. If the user never sends
2957 * some code to stop the str or esc command, then st
2958 * will stop responding. But this is better than
2959 * silently failing with unknown characters. At least
2960 * then users will report back.
2961 *
2962 * In the case users ever get fixed, here is the code:
2963 */
2964 /*
2965 * term.esc = 0;
2966 * strhandle();
2967 */
2968 return;
2969 }
2970 }
2971
2972 /*
2973 * Actions of control codes must be performed as soon they arrive
2974 * because they can be embedded inside a control sequence, and
2975 * they must not cause conflicts with sequences.
2976 */
2977 if (control) {
2978 tcontrolcode(u);
2979 /*
2980 * control codes are not shown ever
2981 */
2982 return;
2983 } else if (term.esc & ESC_START) {
2984 if (term.esc & ESC_CSI) {
2985 csiescseq.buf[csiescseq.len++] = u;
2986 if (BETWEEN(u, 0x40, 0x7E)
2987 || csiescseq.len >= \
2988 sizeof(csiescseq.buf)-1) {
2989 term.esc = 0;
2990 csiparse();
2991 csihandle();
2992 }
2993 return;
2994 } else if (term.esc & ESC_ALTCHARSET) {
2995 tdeftran(u);
2996 } else if (term.esc & ESC_TEST) {
2997 tdectest(u);
2998 } else {
2999 if (!eschandle(u))
3000 return;
3001 /* sequence already finished */
3002 }
3003 term.esc = 0;
3004 /*
3005 * All characters which form part of a sequence are not
3006 * printed
3007 */
3008 return;
3009 }
3010 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
3011 selclear(NULL);
3012
3013 gp = &term.line[term.c.y][term.c.x];
3014 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
3015 gp->mode |= ATTR_WRAP;
3016 tnewline(1);
3017 gp = &term.line[term.c.y][term.c.x];
3018 }
3019
3020 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
3021 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
3022
3023 if (term.c.x+width > term.col) {
3024 tnewline(1);
3025 gp = &term.line[term.c.y][term.c.x];
3026 }
3027
3028 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
3029
3030 if (width == 2) {
3031 gp->mode |= ATTR_WIDE;
3032 if (term.c.x+1 < term.col) {
3033 gp[1].u = '\0';
3034 gp[1].mode = ATTR_WDUMMY;
3035 }
3036 }
3037 if (term.c.x+width < term.col) {
3038 tmoveto(term.c.x+width, term.c.y);
3039 } else {
3040 term.c.state |= CURSOR_WRAPNEXT;
3041 }
3042 }
3043
3044 void
3045 tresize(int col, int row)
3046 {
3047 int i;
3048 int minrow = MIN(row, term.row);
3049 int mincol = MIN(col, term.col);
3050 int *bp;
3051 TCursor c;
3052
3053 if (col < 1 || row < 1) {
3054 fprintf(stderr,
3055 "tresize: error resizing to %dx%d\n", col, row);
3056 return;
3057 }
3058
3059 /*
3060 * slide screen to keep cursor where we expect it -
3061 * tscrollup would work here, but we can optimize to
3062 * memmove because we're freeing the earlier lines
3063 */
3064 for (i = 0; i <= term.c.y - row; i++) {
3065 free(term.line[i]);
3066 free(term.alt[i]);
3067 }
3068 /* ensure that both src and dst are not NULL */
3069 if (i > 0) {
3070 memmove(term.line, term.line + i, row * sizeof(Line));
3071 memmove(term.alt, term.alt + i, row * sizeof(Line));
3072 }
3073 for (i += row; i < term.row; i++) {
3074 free(term.line[i]);
3075 free(term.alt[i]);
3076 }
3077
3078 /* resize to new width */
3079 term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
3080
3081 /* resize to new height */
3082 term.line = xrealloc(term.line, row * sizeof(Line));
3083 term.alt = xrealloc(term.alt, row * sizeof(Line));
3084 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
3085 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
3086
3087 /* resize each row to new width, zero-pad if needed */
3088 for (i = 0; i < minrow; i++) {
3089 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
3090 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
3091 }
3092
3093 /* allocate any new rows */
3094 for (/* i == minrow */; i < row; i++) {
3095 term.line[i] = xmalloc(col * sizeof(Glyph));
3096 term.alt[i] = xmalloc(col * sizeof(Glyph));
3097 }
3098 if (col > term.col) {
3099 bp = term.tabs + term.col;
3100
3101 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
3102 while (--bp > term.tabs && !*bp)
3103 /* nothing */ ;
3104 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
3105 *bp = 1;
3106 }
3107 /* update terminal size */
3108 term.col = col;
3109 term.row = row;
3110 /* reset scrolling region */
3111 tsetscroll(0, row-1);
3112 /* make use of the LIMIT in tmoveto */
3113 tmoveto(term.c.x, term.c.y);
3114 /* Clearing both screens (it makes dirty all lines) */
3115 c = term.c;
3116 for (i = 0; i < 2; i++) {
3117 if (mincol < col && 0 < minrow) {
3118 tclearregion(mincol, 0, col - 1, minrow - 1);
3119 }
3120 if (0 < col && minrow < row) {
3121 tclearregion(0, minrow, col - 1, row - 1);
3122 }
3123 tswapscreen();
3124 tcursor(CURSOR_LOAD);
3125 }
3126 term.c = c;
3127 }
3128
3129 void
3130 xresize(int col, int row)
3131 {
3132 xw.tw = MAX(1, col * xw.cw);
3133 xw.th = MAX(1, row * xw.ch);
3134
3135 XFreePixmap(xw.dpy, xw.buf);
3136 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3137 DefaultDepth(xw.dpy, xw.scr));
3138 XftDrawChange(xw.draw, xw.buf);
3139 xclear(0, 0, xw.w, xw.h);
3140 }
3141
3142 ushort
3143 sixd_to_16bit(int x)
3144 {
3145 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
3146 }
3147
3148 int
3149 xloadcolor(int i, const char *name, Color *ncolor)
3150 {
3151 XRenderColor color = { .alpha = 0xffff };
3152
3153 if (!name) {
3154 if (BETWEEN(i, 16, 255)) { /* 256 color */
3155 if (i < 6*6*6+16) { /* same colors as xterm */
3156 color.red = sixd_to_16bit( ((i-16)/36)%6 );
3157 color.green = sixd_to_16bit( ((i-16)/6) %6 );
3158 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
3159 } else { /* greyscale */
3160 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
3161 color.green = color.blue = color.red;
3162 }
3163 return XftColorAllocValue(xw.dpy, xw.vis,
3164 xw.cmap, &color, ncolor);
3165 } else
3166 name = colorname[i];
3167 }
3168
3169 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
3170 }
3171
3172 void
3173 xloadcols(void)
3174 {
3175 int i;
3176 static int loaded;
3177 Color *cp;
3178
3179 if (loaded) {
3180 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
3181 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
3182 }
3183
3184 for (i = 0; i < LEN(dc.col); i++)
3185 if (!xloadcolor(i, NULL, &dc.col[i])) {
3186 if (colorname[i])
3187 die("Could not allocate color '%s'\n", colorname[i]);
3188 else
3189 die("Could not allocate color %d\n", i);
3190 }
3191 loaded = 1;
3192 }
3193
3194 int
3195 xsetcolorname(int x, const char *name)
3196 {
3197 Color ncolor;
3198
3199 if (!BETWEEN(x, 0, LEN(dc.col)))
3200 return 1;
3201
3202
3203 if (!xloadcolor(x, name, &ncolor))
3204 return 1;
3205
3206 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
3207 dc.col[x] = ncolor;
3208
3209 return 0;
3210 }
3211
3212 void
3213 xtermclear(int col1, int row1, int col2, int row2)
3214 {
3215 XftDrawRect(xw.draw,
3216 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
3217 borderpx + col1 * xw.cw,
3218 borderpx + row1 * xw.ch,
3219 (col2-col1+1) * xw.cw,
3220 (row2-row1+1) * xw.ch);
3221 }
3222
3223 /*
3224 * Absolute coordinates.
3225 */
3226 void
3227 xclear(int x1, int y1, int x2, int y2)
3228 {
3229 XftDrawRect(xw.draw,
3230 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
3231 x1, y1, x2-x1, y2-y1);
3232 }
3233
3234 void
3235 xhints(void)
3236 {
3237 XClassHint class = {opt_class ? opt_class : termname, termname};
3238 XWMHints wm = {.flags = InputHint, .input = 1};
3239 XSizeHints *sizeh = NULL;
3240
3241 sizeh = XAllocSizeHints();
3242
3243 sizeh->flags = PSize | PResizeInc | PBaseSize;
3244 sizeh->height = xw.h;
3245 sizeh->width = xw.w;
3246 sizeh->height_inc = xw.ch;
3247 sizeh->width_inc = xw.cw;
3248 sizeh->base_height = 2 * borderpx;
3249 sizeh->base_width = 2 * borderpx;
3250 if (xw.isfixed) {
3251 sizeh->flags |= PMaxSize | PMinSize;
3252 sizeh->min_width = sizeh->max_width = xw.w;
3253 sizeh->min_height = sizeh->max_height = xw.h;
3254 }
3255 if (xw.gm & (XValue|YValue)) {
3256 sizeh->flags |= USPosition | PWinGravity;
3257 sizeh->x = xw.l;
3258 sizeh->y = xw.t;
3259 sizeh->win_gravity = xgeommasktogravity(xw.gm);
3260 }
3261
3262 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
3263 &class);
3264 XFree(sizeh);
3265 }
3266
3267 int
3268 xgeommasktogravity(int mask)
3269 {
3270 switch (mask & (XNegative|YNegative)) {
3271 case 0:
3272 return NorthWestGravity;
3273 case XNegative:
3274 return NorthEastGravity;
3275 case YNegative:
3276 return SouthWestGravity;
3277 }
3278
3279 return SouthEastGravity;
3280 }
3281
3282 int
3283 xloadfont(Font *f, FcPattern *pattern)
3284 {
3285 FcPattern *match;
3286 FcResult result;
3287
3288 match = FcFontMatch(NULL, pattern, &result);
3289 if (!match)
3290 return 1;
3291
3292 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3293 FcPatternDestroy(match);
3294 return 1;
3295 }
3296
3297 f->set = NULL;
3298 f->pattern = FcPatternDuplicate(pattern);
3299
3300 f->ascent = f->match->ascent;
3301 f->descent = f->match->descent;
3302 f->lbearing = 0;
3303 f->rbearing = f->match->max_advance_width;
3304
3305 f->height = f->ascent + f->descent;
3306 f->width = f->lbearing + f->rbearing;
3307
3308 return 0;
3309 }
3310
3311 void
3312 xloadfonts(char *fontstr, double fontsize)
3313 {
3314 FcPattern *pattern;
3315 double fontval;
3316 float ceilf(float);
3317
3318 if (fontstr[0] == '-') {
3319 pattern = XftXlfdParse(fontstr, False, False);
3320 } else {
3321 pattern = FcNameParse((FcChar8 *)fontstr);
3322 }
3323
3324 if (!pattern)
3325 die("st: can't open font %s\n", fontstr);
3326
3327 if (fontsize > 1) {
3328 FcPatternDel(pattern, FC_PIXEL_SIZE);
3329 FcPatternDel(pattern, FC_SIZE);
3330 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3331 usedfontsize = fontsize;
3332 } else {
3333 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
3334 FcResultMatch) {
3335 usedfontsize = fontval;
3336 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
3337 FcResultMatch) {
3338 usedfontsize = -1;
3339 } else {
3340 /*
3341 * Default font size is 12, if none given. This is to
3342 * have a known usedfontsize value.
3343 */
3344 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3345 usedfontsize = 12;
3346 }
3347 defaultfontsize = usedfontsize;
3348 }
3349
3350 FcConfigSubstitute(0, pattern, FcMatchPattern);
3351 FcDefaultSubstitute(pattern);
3352
3353 if (xloadfont(&dc.font, pattern))
3354 die("st: can't open font %s\n", fontstr);
3355
3356 if (usedfontsize < 0) {
3357 FcPatternGetDouble(dc.font.match->pattern,
3358 FC_PIXEL_SIZE, 0, &fontval);
3359 usedfontsize = fontval;
3360 if (fontsize == 0)
3361 defaultfontsize = fontval;
3362 }
3363
3364 /* Setting character width and height. */
3365 xw.cw = ceilf(dc.font.width * cwscale);
3366 xw.ch = ceilf(dc.font.height * chscale);
3367
3368 FcPatternDel(pattern, FC_SLANT);
3369 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3370 if (xloadfont(&dc.ifont, pattern))
3371 die("st: can't open font %s\n", fontstr);
3372
3373 FcPatternDel(pattern, FC_WEIGHT);
3374 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3375 if (xloadfont(&dc.ibfont, pattern))
3376 die("st: can't open font %s\n", fontstr);
3377
3378 FcPatternDel(pattern, FC_SLANT);
3379 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3380 if (xloadfont(&dc.bfont, pattern))
3381 die("st: can't open font %s\n", fontstr);
3382
3383 FcPatternDestroy(pattern);
3384 }
3385
3386 void
3387 xunloadfont(Font *f)
3388 {
3389 XftFontClose(xw.dpy, f->match);
3390 FcPatternDestroy(f->pattern);
3391 if (f->set)
3392 FcFontSetDestroy(f->set);
3393 }
3394
3395 void
3396 xunloadfonts(void)
3397 {
3398 /* Free the loaded fonts in the font cache. */
3399 while (frclen > 0)
3400 XftFontClose(xw.dpy, frc[--frclen].font);
3401
3402 xunloadfont(&dc.font);
3403 xunloadfont(&dc.bfont);
3404 xunloadfont(&dc.ifont);
3405 xunloadfont(&dc.ibfont);
3406 }
3407
3408 void
3409 xzoom(const Arg *arg)
3410 {
3411 Arg larg;
3412
3413 larg.f = usedfontsize + arg->f;
3414 xzoomabs(&larg);
3415 }
3416
3417 void
3418 xzoomabs(const Arg *arg)
3419 {
3420 xunloadfonts();
3421 xloadfonts(usedfont, arg->f);
3422 cresize(0, 0);
3423 redraw();
3424 xhints();
3425 }
3426
3427 void
3428 xzoomreset(const Arg *arg)
3429 {
3430 Arg larg;
3431
3432 if (defaultfontsize > 0) {
3433 larg.f = defaultfontsize;
3434 xzoomabs(&larg);
3435 }
3436 }
3437
3438 void
3439 xinit(void)
3440 {
3441 XGCValues gcvalues;
3442 Cursor cursor;
3443 Window parent;
3444 pid_t thispid = getpid();
3445 XColor xmousefg, xmousebg;
3446
3447 if (!(xw.dpy = XOpenDisplay(NULL)))
3448 die("Can't open display\n");
3449 xw.scr = XDefaultScreen(xw.dpy);
3450 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3451
3452 /* font */
3453 if (!FcInit())
3454 die("Could not init fontconfig.\n");
3455
3456 usedfont = (opt_font == NULL)? font : opt_font;
3457 xloadfonts(usedfont, 0);
3458
3459 /* colors */
3460 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3461 xloadcols();
3462
3463 /* adjust fixed window geometry */
3464 xw.w = 2 * borderpx + term.col * xw.cw;
3465 xw.h = 2 * borderpx + term.row * xw.ch;
3466 if (xw.gm & XNegative)
3467 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3468 if (xw.gm & YNegative)
3469 xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
3470
3471 /* Events */
3472 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3473 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3474 xw.attrs.bit_gravity = NorthWestGravity;
3475 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3476 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3477 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3478 xw.attrs.colormap = xw.cmap;
3479
3480 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
3481 parent = XRootWindow(xw.dpy, xw.scr);
3482 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3483 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3484 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3485 | CWEventMask | CWColormap, &xw.attrs);
3486
3487 memset(&gcvalues, 0, sizeof(gcvalues));
3488 gcvalues.graphics_exposures = False;
3489 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3490 &gcvalues);
3491 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3492 DefaultDepth(xw.dpy, xw.scr));
3493 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3494 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3495
3496 /* Xft rendering context */
3497 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3498
3499 /* input methods */
3500 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3501 XSetLocaleModifiers("@im=local");
3502 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3503 XSetLocaleModifiers("@im=");
3504 if ((xw.xim = XOpenIM(xw.dpy,
3505 NULL, NULL, NULL)) == NULL) {
3506 die("XOpenIM failed. Could not open input"
3507 " device.\n");
3508 }
3509 }
3510 }
3511 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3512 | XIMStatusNothing, XNClientWindow, xw.win,
3513 XNFocusWindow, xw.win, NULL);
3514 if (xw.xic == NULL)
3515 die("XCreateIC failed. Could not obtain input method.\n");
3516
3517 /* white cursor, black outline */
3518 cursor = XCreateFontCursor(xw.dpy, mouseshape);
3519 XDefineCursor(xw.dpy, xw.win, cursor);
3520
3521 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
3522 xmousefg.red = 0xffff;
3523 xmousefg.green = 0xffff;
3524 xmousefg.blue = 0xffff;
3525 }
3526
3527 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
3528 xmousebg.red = 0x0000;
3529 xmousebg.green = 0x0000;
3530 xmousebg.blue = 0x0000;
3531 }
3532
3533 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
3534
3535 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3536 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3537 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3538 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3539
3540 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3541 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3542 PropModeReplace, (uchar *)&thispid, 1);
3543
3544 xresettitle();
3545 XMapWindow(xw.dpy, xw.win);
3546 xhints();
3547 XSync(xw.dpy, False);
3548 }
3549
3550 int
3551 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
3552 {
3553 float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
3554 ushort mode, prevmode = USHRT_MAX;
3555 Font *font = &dc.font;
3556 int frcflags = FRC_NORMAL;
3557 float runewidth = xw.cw;
3558 Rune rune;
3559 FT_UInt glyphidx;
3560 FcResult fcres;
3561 FcPattern *fcpattern, *fontpattern;
3562 FcFontSet *fcsets[] = { NULL };
3563 FcCharSet *fccharset;
3564 int i, f, numspecs = 0;
3565
3566 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
3567 /* Fetch rune and mode for current glyph. */
3568 rune = glyphs[i].u;
3569 mode = glyphs[i].mode;
3570
3571 /* Skip dummy wide-character spacing. */
3572 if (mode == ATTR_WDUMMY)
3573 continue;
3574
3575 /* Determine font for glyph if different from previous glyph. */
3576 if (prevmode != mode) {
3577 prevmode = mode;
3578 font = &dc.font;
3579 frcflags = FRC_NORMAL;
3580 runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
3581 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
3582 font = &dc.ibfont;
3583 frcflags = FRC_ITALICBOLD;
3584 } else if (mode & ATTR_ITALIC) {
3585 font = &dc.ifont;
3586 frcflags = FRC_ITALIC;
3587 } else if (mode & ATTR_BOLD) {
3588 font = &dc.bfont;
3589 frcflags = FRC_BOLD;
3590 }
3591 yp = winy + font->ascent;
3592 }
3593
3594 /* Lookup character index with default font. */
3595 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
3596 if (glyphidx) {
3597 specs[numspecs].font = font->match;
3598 specs[numspecs].glyph = glyphidx;
3599 specs[numspecs].x = (short)xp;
3600 specs[numspecs].y = (short)yp;
3601 xp += runewidth;
3602 numspecs++;
3603 continue;
3604 }
3605
3606 /* Fallback on font cache, search the font cache for match. */
3607 for (f = 0; f < frclen; f++) {
3608 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
3609 /* Everything correct. */
3610 if (glyphidx && frc[f].flags == frcflags)
3611 break;
3612 /* We got a default font for a not found glyph. */
3613 if (!glyphidx && frc[f].flags == frcflags
3614 && frc[f].unicodep == rune) {
3615 break;
3616 }
3617 }
3618
3619 /* Nothing was found. Use fontconfig to find matching font. */
3620 if (f >= frclen) {
3621 if (!font->set)
3622 font->set = FcFontSort(0, font->pattern,
3623 1, 0, &fcres);
3624 fcsets[0] = font->set;
3625
3626 /*
3627 * Nothing was found in the cache. Now use
3628 * some dozen of Fontconfig calls to get the
3629 * font for one single character.
3630 *
3631 * Xft and fontconfig are design failures.
3632 */
3633 fcpattern = FcPatternDuplicate(font->pattern);
3634 fccharset = FcCharSetCreate();
3635
3636 FcCharSetAddChar(fccharset, rune);
3637 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3638 fccharset);
3639 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
3640
3641 FcConfigSubstitute(0, fcpattern,
3642 FcMatchPattern);
3643 FcDefaultSubstitute(fcpattern);
3644
3645 fontpattern = FcFontSetMatch(0, fcsets, 1,
3646 fcpattern, &fcres);
3647
3648 /*
3649 * Overwrite or create the new cache entry.
3650 */
3651 if (frclen >= LEN(frc)) {
3652 frclen = LEN(frc) - 1;
3653 XftFontClose(xw.dpy, frc[frclen].font);
3654 frc[frclen].unicodep = 0;
3655 }
3656
3657 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3658 fontpattern);
3659 frc[frclen].flags = frcflags;
3660 frc[frclen].unicodep = rune;
3661
3662 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
3663
3664 f = frclen;
3665 frclen++;
3666
3667 FcPatternDestroy(fcpattern);
3668 FcCharSetDestroy(fccharset);
3669 }
3670
3671 specs[numspecs].font = frc[f].font;
3672 specs[numspecs].glyph = glyphidx;
3673 specs[numspecs].x = (short)xp;
3674 specs[numspecs].y = (short)(winy + frc[f].font->ascent);
3675 xp += runewidth;
3676 numspecs++;
3677 }
3678
3679 return numspecs;
3680 }
3681
3682 void
3683 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
3684 {
3685 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
3686 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3687 width = charlen * xw.cw;
3688 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3689 XRenderColor colfg, colbg;
3690 XRectangle r;
3691
3692 /* Determine foreground and background colors based on mode. */
3693 if (base.fg == defaultfg) {
3694 if (base.mode & ATTR_ITALIC)
3695 base.fg = defaultitalic;
3696 else if ((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
3697 base.fg = defaultitalic;
3698 else if (base.mode & ATTR_UNDERLINE)
3699 base.fg = defaultunderline;
3700 }
3701
3702 if (IS_TRUECOL(base.fg)) {
3703 colfg.alpha = 0xffff;
3704 colfg.red = TRUERED(base.fg);
3705 colfg.green = TRUEGREEN(base.fg);
3706 colfg.blue = TRUEBLUE(base.fg);
3707 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3708 fg = &truefg;
3709 } else {
3710 fg = &dc.col[base.fg];
3711 }
3712
3713 if (IS_TRUECOL(base.bg)) {
3714 colbg.alpha = 0xffff;
3715 colbg.green = TRUEGREEN(base.bg);
3716 colbg.red = TRUERED(base.bg);
3717 colbg.blue = TRUEBLUE(base.bg);
3718 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3719 bg = &truebg;
3720 } else {
3721 bg = &dc.col[base.bg];
3722 }
3723
3724 /* Change basic system colors [0-7] to bright system colors [8-15] */
3725 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
3726 fg = &dc.col[base.fg + 8];
3727
3728 if (IS_SET(MODE_REVERSE)) {
3729 if (fg == &dc.col[defaultfg]) {
3730 fg = &dc.col[defaultbg];
3731 } else {
3732 colfg.red = ~fg->color.red;
3733 colfg.green = ~fg->color.green;
3734 colfg.blue = ~fg->color.blue;
3735 colfg.alpha = fg->color.alpha;
3736 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3737 &revfg);
3738 fg = &revfg;
3739 }
3740
3741 if (bg == &dc.col[defaultbg]) {
3742 bg = &dc.col[defaultfg];
3743 } else {
3744 colbg.red = ~bg->color.red;
3745 colbg.green = ~bg->color.green;
3746 colbg.blue = ~bg->color.blue;
3747 colbg.alpha = bg->color.alpha;
3748 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3749 &revbg);
3750 bg = &revbg;
3751 }
3752 }
3753
3754 if (base.mode & ATTR_REVERSE) {
3755 temp = fg;
3756 fg = bg;
3757 bg = temp;
3758 }
3759
3760 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
3761 colfg.red = fg->color.red / 2;
3762 colfg.green = fg->color.green / 2;
3763 colfg.blue = fg->color.blue / 2;
3764 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3765 fg = &revfg;
3766 }
3767
3768 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3769 fg = bg;
3770
3771 if (base.mode & ATTR_INVISIBLE)
3772 fg = bg;
3773
3774 /* Intelligent cleaning up of the borders. */
3775 if (x == 0) {
3776 xclear(0, (y == 0)? 0 : winy, borderpx,
3777 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3778 }
3779 if (x + charlen >= term.col) {
3780 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3781 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3782 }
3783 if (y == 0)
3784 xclear(winx, 0, winx + width, borderpx);
3785 if (y == term.row-1)
3786 xclear(winx, winy + xw.ch, winx + width, xw.h);
3787
3788 /* Clean up the region we want to draw to. */
3789 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3790
3791 /* Set the clip region because Xft is sometimes dirty. */
3792 r.x = 0;
3793 r.y = 0;
3794 r.height = xw.ch;
3795 r.width = width;
3796 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3797
3798 /* Render the glyphs. */
3799 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
3800
3801 /* Render underline and strikethrough. */
3802 if (base.mode & ATTR_UNDERLINE) {
3803 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
3804 width, 1);
3805 }
3806
3807 if (base.mode & ATTR_STRUCK) {
3808 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
3809 width, 1);
3810 }
3811
3812 /* Reset clip to none. */
3813 XftDrawSetClip(xw.draw, 0);
3814 }
3815
3816 void
3817 xdrawglyph(Glyph g, int x, int y)
3818 {
3819 int numspecs;
3820 XftGlyphFontSpec spec;
3821
3822 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
3823 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
3824 }
3825
3826 void
3827 xdrawcursor(void)
3828 {
3829 static int oldx = 0, oldy = 0;
3830 int curx;
3831 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
3832 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3833 Color drawcol;
3834
3835 LIMIT(oldx, 0, term.col-1);
3836 LIMIT(oldy, 0, term.row-1);
3837
3838 curx = term.c.x;
3839
3840 /* adjust position if in dummy */
3841 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
3842 oldx--;
3843 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3844 curx--;
3845
3846 /* remove the old cursor */
3847 og = term.line[oldy][oldx];
3848 if (ena_sel && selected(oldx, oldy))
3849 og.mode ^= ATTR_REVERSE;
3850 xdrawglyph(og, oldx, oldy);
3851
3852 g.u = term.line[term.c.y][term.c.x].u;
3853
3854 /*
3855 * Select the right color for the right mode.
3856 */
3857 if (IS_SET(MODE_REVERSE)) {
3858 g.mode |= ATTR_REVERSE;
3859 g.bg = defaultfg;
3860 if (ena_sel && selected(term.c.x, term.c.y)) {
3861 drawcol = dc.col[defaultcs];
3862 g.fg = defaultrcs;
3863 } else {
3864 drawcol = dc.col[defaultrcs];
3865 g.fg = defaultcs;
3866 }
3867 } else {
3868 g.fg = defaultfg;
3869 if (ena_sel && selected(term.c.x, term.c.y)) {
3870 g.bg = defaultcs;
3871 drawcol = dc.col[defaultrcs];
3872 } else {
3873 drawcol = dc.col[defaultcs];
3874 g.bg = defaultrcs;
3875 }
3876 }
3877
3878 if (IS_SET(MODE_HIDE))
3879 return;
3880
3881 /* draw the new one */
3882 if (xw.state & WIN_FOCUSED) {
3883 switch (xw.cursor) {
3884 case 7: /* st extension: snowman */
3885 utf8decode("☃", &g.u, UTF_SIZ);
3886 case 0: /* Blinking Block */
3887 case 1: /* Blinking Block (Default) */
3888 case 2: /* Steady Block */
3889 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
3890 xdrawglyph(g, term.c.x, term.c.y);
3891 break;
3892 case 3: /* Blinking Underline */
3893 case 4: /* Steady Underline */
3894 XftDrawRect(xw.draw, &drawcol,
3895 borderpx + curx * xw.cw,
3896 borderpx + (term.c.y + 1) * xw.ch - \
3897 cursorthickness,
3898 xw.cw, cursorthickness);
3899 break;
3900 case 5: /* Blinking bar */
3901 case 6: /* Steady bar */
3902 XftDrawRect(xw.draw, &drawcol,
3903 borderpx + curx * xw.cw,
3904 borderpx + term.c.y * xw.ch,
3905 cursorthickness, xw.ch);
3906 break;
3907 }
3908 } else {
3909 XftDrawRect(xw.draw, &drawcol,
3910 borderpx + curx * xw.cw,
3911 borderpx + term.c.y * xw.ch,
3912 xw.cw - 1, 1);
3913 XftDrawRect(xw.draw, &drawcol,
3914 borderpx + curx * xw.cw,
3915 borderpx + term.c.y * xw.ch,
3916 1, xw.ch - 1);
3917 XftDrawRect(xw.draw, &drawcol,
3918 borderpx + (curx + 1) * xw.cw - 1,
3919 borderpx + term.c.y * xw.ch,
3920 1, xw.ch - 1);
3921 XftDrawRect(xw.draw, &drawcol,
3922 borderpx + curx * xw.cw,
3923 borderpx + (term.c.y + 1) * xw.ch - 1,
3924 xw.cw, 1);
3925 }
3926 oldx = curx, oldy = term.c.y;
3927 }
3928
3929
3930 void
3931 xsettitle(char *p)
3932 {
3933 XTextProperty prop;
3934
3935 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3936 &prop);
3937 XSetWMName(xw.dpy, xw.win, &prop);
3938 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3939 XFree(prop.value);
3940 }
3941
3942 void
3943 xresettitle(void)
3944 {
3945 xsettitle(opt_title ? opt_title : "st");
3946 }
3947
3948 void
3949 redraw(void)
3950 {
3951 tfulldirt();
3952 draw();
3953 }
3954
3955 void
3956 draw(void)
3957 {
3958 drawregion(0, 0, term.col, term.row);
3959 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3960 xw.h, 0, 0);
3961 XSetForeground(xw.dpy, dc.gc,
3962 dc.col[IS_SET(MODE_REVERSE)?
3963 defaultfg : defaultbg].pixel);
3964 }
3965
3966 void
3967 drawregion(int x1, int y1, int x2, int y2)
3968 {
3969 int i, x, y, ox, numspecs;
3970 Glyph base, new;
3971 XftGlyphFontSpec *specs;
3972 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3973
3974 if (!(xw.state & WIN_VISIBLE))
3975 return;
3976
3977 for (y = y1; y < y2; y++) {
3978 if (!term.dirty[y])
3979 continue;
3980
3981 xtermclear(0, y, term.col, y);
3982 term.dirty[y] = 0;
3983
3984 specs = term.specbuf;
3985 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
3986
3987 i = ox = 0;
3988 for (x = x1; x < x2 && i < numspecs; x++) {
3989 new = term.line[y][x];
3990 if (new.mode == ATTR_WDUMMY)
3991 continue;
3992 if (ena_sel && selected(x, y))
3993 new.mode ^= ATTR_REVERSE;
3994 if (i > 0 && ATTRCMP(base, new)) {
3995 xdrawglyphfontspecs(specs, base, i, ox, y);
3996 specs += i;
3997 numspecs -= i;
3998 i = 0;
3999 }
4000 if (i == 0) {
4001 ox = x;
4002 base = new;
4003 }
4004 i++;
4005 }
4006 if (i > 0)
4007 xdrawglyphfontspecs(specs, base, i, ox, y);
4008 }
4009 xdrawcursor();
4010 }
4011
4012 void
4013 expose(XEvent *ev)
4014 {
4015 redraw();
4016 }
4017
4018 void
4019 visibility(XEvent *ev)
4020 {
4021 XVisibilityEvent *e = &ev->xvisibility;
4022
4023 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
4024 }
4025
4026 void
4027 unmap(XEvent *ev)
4028 {
4029 xw.state &= ~WIN_VISIBLE;
4030 }
4031
4032 void
4033 xsetpointermotion(int set)
4034 {
4035 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
4036 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
4037 }
4038
4039 void
4040 xseturgency(int add)
4041 {
4042 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
4043
4044 MODBIT(h->flags, add, XUrgencyHint);
4045 XSetWMHints(xw.dpy, xw.win, h);
4046 XFree(h);
4047 }
4048
4049 void
4050 focus(XEvent *ev)
4051 {
4052 XFocusChangeEvent *e = &ev->xfocus;
4053
4054 if (e->mode == NotifyGrab)
4055 return;
4056
4057 if (ev->type == FocusIn) {
4058 XSetICFocus(xw.xic);
4059 xw.state |= WIN_FOCUSED;
4060 xseturgency(0);
4061 if (IS_SET(MODE_FOCUS))
4062 ttywrite("\033[I", 3);
4063 } else {
4064 XUnsetICFocus(xw.xic);
4065 xw.state &= ~WIN_FOCUSED;
4066 if (IS_SET(MODE_FOCUS))
4067 ttywrite("\033[O", 3);
4068 }
4069 }
4070
4071 int
4072 match(uint mask, uint state)
4073 {
4074 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
4075 }
4076
4077 void
4078 numlock(const Arg *dummy)
4079 {
4080 term.numlock ^= 1;
4081 }
4082
4083 char*
4084 kmap(KeySym k, uint state)
4085 {
4086 Key *kp;
4087 int i;
4088
4089 /* Check for mapped keys out of X11 function keys. */
4090 for (i = 0; i < LEN(mappedkeys); i++) {
4091 if (mappedkeys[i] == k)
4092 break;
4093 }
4094 if (i == LEN(mappedkeys)) {
4095 if ((k & 0xFFFF) < 0xFD00)
4096 return NULL;
4097 }
4098
4099 for (kp = key; kp < key + LEN(key); kp++) {
4100 if (kp->k != k)
4101 continue;
4102
4103 if (!match(kp->mask, state))
4104 continue;
4105
4106 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
4107 continue;
4108 if (term.numlock && kp->appkey == 2)
4109 continue;
4110
4111 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
4112 continue;
4113
4114 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
4115 continue;
4116
4117 return kp->s;
4118 }
4119
4120 return NULL;
4121 }
4122
4123 void
4124 kpress(XEvent *ev)
4125 {
4126 XKeyEvent *e = &ev->xkey;
4127 KeySym ksym;
4128 char buf[32], *customkey;
4129 int len;
4130 Rune c;
4131 Status status;
4132 Shortcut *bp;
4133
4134 if (IS_SET(MODE_KBDLOCK))
4135 return;
4136
4137 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
4138 /* 1. shortcuts */
4139 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
4140 if (ksym == bp->keysym && match(bp->mod, e->state)) {
4141 bp->func(&(bp->arg));
4142 return;
4143 }
4144 }
4145
4146 /* 2. custom keys from config.h */
4147 if ((customkey = kmap(ksym, e->state))) {
4148 ttysend(customkey, strlen(customkey));
4149 return;
4150 }
4151
4152 /* 3. composed string from input method */
4153 if (len == 0)
4154 return;
4155 if (len == 1 && e->state & Mod1Mask) {
4156 if (IS_SET(MODE_8BIT)) {
4157 if (*buf < 0177) {
4158 c = *buf | 0x80;
4159 len = utf8encode(c, buf);
4160 }
4161 } else {
4162 buf[1] = buf[0];
4163 buf[0] = '\033';
4164 len = 2;
4165 }
4166 }
4167 ttysend(buf, len);
4168 }
4169
4170
4171 void
4172 cmessage(XEvent *e)
4173 {
4174 /*
4175 * See xembed specs
4176 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
4177 */
4178 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
4179 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
4180 xw.state |= WIN_FOCUSED;
4181 xseturgency(0);
4182 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
4183 xw.state &= ~WIN_FOCUSED;
4184 }
4185 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
4186 /* Send SIGHUP to shell */
4187 kill(pid, SIGHUP);
4188 exit(0);
4189 }
4190 }
4191
4192 void
4193 cresize(int width, int height)
4194 {
4195 int col, row;
4196
4197 if (width != 0)
4198 xw.w = width;
4199 if (height != 0)
4200 xw.h = height;
4201
4202 col = (xw.w - 2 * borderpx) / xw.cw;
4203 row = (xw.h - 2 * borderpx) / xw.ch;
4204
4205 tresize(col, row);
4206 xresize(col, row);
4207 ttyresize();
4208 }
4209
4210 void
4211 resize(XEvent *e)
4212 {
4213 if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
4214 return;
4215
4216 cresize(e->xconfigure.width, e->xconfigure.height);
4217 }
4218
4219 void
4220 run(void)
4221 {
4222 XEvent ev;
4223 int w = xw.w, h = xw.h;
4224 fd_set rfd;
4225 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
4226 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
4227 long deltatime;
4228
4229 /* Waiting for window mapping */
4230 do {
4231 XNextEvent(xw.dpy, &ev);
4232 /*
4233 * This XFilterEvent call is required because of XOpenIM. It
4234 * does filter out the key event and some client message for
4235 * the input method too.
4236 */
4237 if (XFilterEvent(&ev, None))
4238 continue;
4239 if (ev.type == ConfigureNotify) {
4240 w = ev.xconfigure.width;
4241 h = ev.xconfigure.height;
4242 }
4243 } while (ev.type != MapNotify);
4244
4245 ttynew();
4246 cresize(w, h);
4247
4248 clock_gettime(CLOCK_MONOTONIC, &last);
4249 lastblink = last;
4250
4251 for (xev = actionfps;;) {
4252 FD_ZERO(&rfd);
4253 FD_SET(cmdfd, &rfd);
4254 FD_SET(xfd, &rfd);
4255
4256 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
4257 if (errno == EINTR)
4258 continue;
4259 die("select failed: %s\n", strerror(errno));
4260 }
4261 if (FD_ISSET(cmdfd, &rfd)) {
4262 ttyread();
4263 if (blinktimeout) {
4264 blinkset = tattrset(ATTR_BLINK);
4265 if (!blinkset)
4266 MODBIT(term.mode, 0, MODE_BLINK);
4267 }
4268 }
4269
4270 if (FD_ISSET(xfd, &rfd))
4271 xev = actionfps;
4272
4273 clock_gettime(CLOCK_MONOTONIC, &now);
4274 drawtimeout.tv_sec = 0;
4275 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
4276 tv = &drawtimeout;
4277
4278 dodraw = 0;
4279 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
4280 tsetdirtattr(ATTR_BLINK);
4281 term.mode ^= MODE_BLINK;
4282 lastblink = now;
4283 dodraw = 1;
4284 }
4285 deltatime = TIMEDIFF(now, last);
4286 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
4287 dodraw = 1;
4288 last = now;
4289 }
4290
4291 if (dodraw) {
4292 while (XPending(xw.dpy)) {
4293 XNextEvent(xw.dpy, &ev);
4294 if (XFilterEvent(&ev, None))
4295 continue;
4296 if (handler[ev.type])
4297 (handler[ev.type])(&ev);
4298 }
4299
4300 draw();
4301 XFlush(xw.dpy);
4302
4303 if (xev && !FD_ISSET(xfd, &rfd))
4304 xev--;
4305 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
4306 if (blinkset) {
4307 if (TIMEDIFF(now, lastblink) \
4308 > blinktimeout) {
4309 drawtimeout.tv_nsec = 1000;
4310 } else {
4311 drawtimeout.tv_nsec = (1E6 * \
4312 (blinktimeout - \
4313 TIMEDIFF(now,
4314 lastblink)));
4315 }
4316 drawtimeout.tv_sec = \
4317 drawtimeout.tv_nsec / 1E9;
4318 drawtimeout.tv_nsec %= (long)1E9;
4319 } else {
4320 tv = NULL;
4321 }
4322 }
4323 }
4324 }
4325 }
4326
4327 void
4328 usage(void)
4329 {
4330 die("%s " VERSION " (c) 2010-2015 st engineers\n"
4331 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
4332 " [-i] [-t title] [-T title] [-w windowid] [-e command ...]"
4333 " [command ...]\n"
4334 " st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
4335 " [-i] [-t title] [-T title] [-w windowid] -l line"
4336 " [stty_args ...]\n",
4337 argv0);
4338 }
4339
4340 int
4341 main(int argc, char *argv[])
4342 {
4343 uint cols = 80, rows = 24;
4344
4345 xw.l = xw.t = 0;
4346 xw.isfixed = False;
4347 xw.cursor = cursorshape;
4348
4349 ARGBEGIN {
4350 case 'a':
4351 allowaltscreen = 0;
4352 break;
4353 case 'c':
4354 opt_class = EARGF(usage());
4355 break;
4356 case 'e':
4357 if (argc > 0)
4358 --argc, ++argv;
4359 goto run;
4360 case 'f':
4361 opt_font = EARGF(usage());
4362 break;
4363 case 'g':
4364 xw.gm = XParseGeometry(EARGF(usage()),
4365 &xw.l, &xw.t, &cols, &rows);
4366 break;
4367 case 'i':
4368 xw.isfixed = 1;
4369 break;
4370 case 'o':
4371 opt_io = EARGF(usage());
4372 break;
4373 case 'l':
4374 opt_line = EARGF(usage());
4375 break;
4376 case 't':
4377 case 'T':
4378 opt_title = EARGF(usage());
4379 break;
4380 case 'w':
4381 opt_embed = EARGF(usage());
4382 break;
4383 case 'v':
4384 default:
4385 usage();
4386 } ARGEND;
4387
4388 run:
4389 if (argc > 0) {
4390 /* eat all remaining arguments */
4391 opt_cmd = argv;
4392 if (!opt_title && !opt_line)
4393 opt_title = basename(xstrdup(argv[0]));
4394 }
4395 setlocale(LC_CTYPE, "");
4396 XSetLocaleModifiers("");
4397 tnew(MAX(cols, 1), MAX(rows, 1));
4398 xinit();
4399 selinit();
4400 run();
4401
4402 return 0;
4403 }
4404