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Remove stupid assignation in memcpy()
[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 DIVCEIL(n, d) (((n) + ((d) - 1)) / (d))
72 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
73 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
74 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
75 #define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL)
76 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
77 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
78 (a).bg != (b).bg)
79 #define IS_SET(flag) ((term.mode & (flag)) != 0)
80 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
81 (t1.tv_nsec-t2.tv_nsec)/1E6)
82 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
83
84 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
85 #define IS_TRUECOL(x) (1 << 24 & (x))
86 #define TRUERED(x) (((x) & 0xff0000) >> 8)
87 #define TRUEGREEN(x) (((x) & 0xff00))
88 #define TRUEBLUE(x) (((x) & 0xff) << 8)
89
90
91 enum glyph_attribute {
92 ATTR_NULL = 0,
93 ATTR_BOLD = 1 << 0,
94 ATTR_FAINT = 1 << 1,
95 ATTR_ITALIC = 1 << 2,
96 ATTR_UNDERLINE = 1 << 3,
97 ATTR_BLINK = 1 << 4,
98 ATTR_REVERSE = 1 << 5,
99 ATTR_INVISIBLE = 1 << 6,
100 ATTR_STRUCK = 1 << 7,
101 ATTR_WRAP = 1 << 8,
102 ATTR_WIDE = 1 << 9,
103 ATTR_WDUMMY = 1 << 10,
104 ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
105 };
106
107 enum cursor_movement {
108 CURSOR_SAVE,
109 CURSOR_LOAD
110 };
111
112 enum cursor_state {
113 CURSOR_DEFAULT = 0,
114 CURSOR_WRAPNEXT = 1,
115 CURSOR_ORIGIN = 2
116 };
117
118 enum term_mode {
119 MODE_WRAP = 1 << 0,
120 MODE_INSERT = 1 << 1,
121 MODE_APPKEYPAD = 1 << 2,
122 MODE_ALTSCREEN = 1 << 3,
123 MODE_CRLF = 1 << 4,
124 MODE_MOUSEBTN = 1 << 5,
125 MODE_MOUSEMOTION = 1 << 6,
126 MODE_REVERSE = 1 << 7,
127 MODE_KBDLOCK = 1 << 8,
128 MODE_HIDE = 1 << 9,
129 MODE_ECHO = 1 << 10,
130 MODE_APPCURSOR = 1 << 11,
131 MODE_MOUSESGR = 1 << 12,
132 MODE_8BIT = 1 << 13,
133 MODE_BLINK = 1 << 14,
134 MODE_FBLINK = 1 << 15,
135 MODE_FOCUS = 1 << 16,
136 MODE_MOUSEX10 = 1 << 17,
137 MODE_MOUSEMANY = 1 << 18,
138 MODE_BRCKTPASTE = 1 << 19,
139 MODE_PRINT = 1 << 20,
140 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
141 |MODE_MOUSEMANY,
142 };
143
144 enum charset {
145 CS_GRAPHIC0,
146 CS_GRAPHIC1,
147 CS_UK,
148 CS_USA,
149 CS_MULTI,
150 CS_GER,
151 CS_FIN
152 };
153
154 enum escape_state {
155 ESC_START = 1,
156 ESC_CSI = 2,
157 ESC_STR = 4, /* DCS, OSC, PM, APC */
158 ESC_ALTCHARSET = 8,
159 ESC_STR_END = 16, /* a final string was encountered */
160 ESC_TEST = 32, /* Enter in test mode */
161 };
162
163 enum window_state {
164 WIN_VISIBLE = 1,
165 WIN_FOCUSED = 2
166 };
167
168 enum selection_mode {
169 SEL_IDLE = 0,
170 SEL_EMPTY = 1,
171 SEL_READY = 2
172 };
173
174 enum selection_type {
175 SEL_REGULAR = 1,
176 SEL_RECTANGULAR = 2
177 };
178
179 enum selection_snap {
180 SNAP_WORD = 1,
181 SNAP_LINE = 2
182 };
183
184 typedef unsigned char uchar;
185 typedef unsigned int uint;
186 typedef unsigned long ulong;
187 typedef unsigned short ushort;
188
189 typedef uint_least32_t Rune;
190
191 typedef XftDraw *Draw;
192 typedef XftColor Color;
193
194 typedef struct {
195 Rune u; /* character code */
196 ushort mode; /* attribute flags */
197 uint32_t fg; /* foreground */
198 uint32_t bg; /* background */
199 } Glyph;
200
201 typedef Glyph *Line;
202
203 typedef struct {
204 Glyph attr; /* current char attributes */
205 int x;
206 int y;
207 char state;
208 } TCursor;
209
210 /* CSI Escape sequence structs */
211 /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
212 typedef struct {
213 char buf[ESC_BUF_SIZ]; /* raw string */
214 int len; /* raw string length */
215 char priv;
216 int arg[ESC_ARG_SIZ];
217 int narg; /* nb of args */
218 char mode[2];
219 } CSIEscape;
220
221 /* STR Escape sequence structs */
222 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
223 typedef struct {
224 char type; /* ESC type ... */
225 char buf[STR_BUF_SIZ]; /* raw string */
226 int len; /* raw string length */
227 char *args[STR_ARG_SIZ];
228 int narg; /* nb of args */
229 } STREscape;
230
231 /* Internal representation of the screen */
232 typedef struct {
233 int row; /* nb row */
234 int col; /* nb col */
235 Line *line; /* screen */
236 Line *alt; /* alternate screen */
237 int *dirty; /* dirtyness of lines */
238 XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
239 TCursor c; /* cursor */
240 int top; /* top scroll limit */
241 int bot; /* bottom scroll limit */
242 int mode; /* terminal mode flags */
243 int esc; /* escape state flags */
244 char trantbl[4]; /* charset table translation */
245 int charset; /* current charset */
246 int icharset; /* selected charset for sequence */
247 int numlock; /* lock numbers in keyboard */
248 int *tabs;
249 } Term;
250
251 /* Purely graphic info */
252 typedef struct {
253 Display *dpy;
254 Colormap cmap;
255 Window win;
256 Drawable buf;
257 Atom xembed, wmdeletewin, netwmname, netwmpid;
258 XIM xim;
259 XIC xic;
260 Draw draw;
261 Visual *vis;
262 XSetWindowAttributes attrs;
263 int scr;
264 int isfixed; /* is fixed geometry? */
265 int l, t; /* left and top offset */
266 int gm; /* geometry mask */
267 int tw, th; /* tty width and height */
268 int w, h; /* window width and height */
269 int ch; /* char height */
270 int cw; /* char width */
271 char state; /* focus, redraw, visible */
272 int cursor; /* cursor style */
273 } XWindow;
274
275 typedef struct {
276 uint b;
277 uint mask;
278 char *s;
279 } MouseShortcut;
280
281 typedef struct {
282 KeySym k;
283 uint mask;
284 char *s;
285 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
286 signed char appkey; /* application keypad */
287 signed char appcursor; /* application cursor */
288 signed char crlf; /* crlf mode */
289 } Key;
290
291 typedef struct {
292 int mode;
293 int type;
294 int snap;
295 /*
296 * Selection variables:
297 * nb – normalized coordinates of the beginning of the selection
298 * ne – normalized coordinates of the end of the selection
299 * ob – original coordinates of the beginning of the selection
300 * oe – original coordinates of the end of the selection
301 */
302 struct {
303 int x, y;
304 } nb, ne, ob, oe;
305
306 char *primary, *clipboard;
307 Atom xtarget;
308 int alt;
309 struct timespec tclick1;
310 struct timespec tclick2;
311 } Selection;
312
313 typedef union {
314 int i;
315 uint ui;
316 float f;
317 const void *v;
318 } Arg;
319
320 typedef struct {
321 uint mod;
322 KeySym keysym;
323 void (*func)(const Arg *);
324 const Arg arg;
325 } Shortcut;
326
327 /* function definitions used in config.h */
328 static void clipcopy(const Arg *);
329 static void clippaste(const Arg *);
330 static void numlock(const Arg *);
331 static void selpaste(const Arg *);
332 static void xzoom(const Arg *);
333 static void xzoomabs(const Arg *);
334 static void xzoomreset(const Arg *);
335 static void printsel(const Arg *);
336 static void printscreen(const Arg *) ;
337 static void toggleprinter(const Arg *);
338 static void sendbreak(const Arg *);
339
340 /* Config.h for applying patches and the configuration. */
341 #include "config.h"
342
343 /* Font structure */
344 typedef struct {
345 int height;
346 int width;
347 int ascent;
348 int descent;
349 short lbearing;
350 short rbearing;
351 XftFont *match;
352 FcFontSet *set;
353 FcPattern *pattern;
354 } Font;
355
356 /* Drawing Context */
357 typedef struct {
358 Color col[MAX(LEN(colorname), 256)];
359 Font font, bfont, ifont, ibfont;
360 GC gc;
361 } DC;
362
363 static void die(const char *, ...);
364 static void draw(void);
365 static void redraw(void);
366 static void drawregion(int, int, int, int);
367 static void execsh(void);
368 static void stty(void);
369 static void sigchld(int);
370 static void run(void);
371
372 static void csidump(void);
373 static void csihandle(void);
374 static void csiparse(void);
375 static void csireset(void);
376 static int eschandle(uchar);
377 static void strdump(void);
378 static void strhandle(void);
379 static void strparse(void);
380 static void strreset(void);
381
382 static int tattrset(int);
383 static void tprinter(char *, size_t);
384 static void tdumpsel(void);
385 static void tdumpline(int);
386 static void tdump(void);
387 static void tclearregion(int, int, int, int);
388 static void tcursor(int);
389 static void tdeletechar(int);
390 static void tdeleteline(int);
391 static void tinsertblank(int);
392 static void tinsertblankline(int);
393 static int tlinelen(int);
394 static void tmoveto(int, int);
395 static void tmoveato(int, int);
396 static void tnew(int, int);
397 static void tnewline(int);
398 static void tputtab(int);
399 static void tputc(Rune);
400 static void treset(void);
401 static void tresize(int, int);
402 static void tscrollup(int, int);
403 static void tscrolldown(int, int);
404 static void tsetattr(int *, int);
405 static void tsetchar(Rune, Glyph *, int, int);
406 static void tsetscroll(int, int);
407 static void tswapscreen(void);
408 static void tsetdirt(int, int);
409 static void tsetdirtattr(int);
410 static void tsetmode(int, int, int *, int);
411 static void tfulldirt(void);
412 static void techo(Rune);
413 static void tcontrolcode(uchar );
414 static void tdectest(char );
415 static int32_t tdefcolor(int *, int *, int);
416 static void tdeftran(char);
417 static inline int match(uint, uint);
418 static void ttynew(void);
419 static size_t ttyread(void);
420 static void ttyresize(void);
421 static void ttysend(char *, size_t);
422 static void ttywrite(const char *, size_t);
423 static void tstrsequence(uchar);
424
425 static inline ushort sixd_to_16bit(int);
426 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
427 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
428 static void xdrawglyph(Glyph, int, int);
429 static void xhints(void);
430 static void xclear(int, int, int, int);
431 static void xdrawcursor(void);
432 static void xinit(void);
433 static void xloadcols(void);
434 static int xsetcolorname(int, const char *);
435 static int xgeommasktogravity(int);
436 static int xloadfont(Font *, FcPattern *);
437 static void xloadfonts(char *, double);
438 static void xsettitle(char *);
439 static void xresettitle(void);
440 static void xsetpointermotion(int);
441 static void xseturgency(int);
442 static void xsetsel(char *, Time);
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_class = NULL;
528 static char *opt_embed = NULL;
529 static char *opt_font = NULL;
530 static char *opt_io = NULL;
531 static char *opt_line = NULL;
532 static char *opt_name = NULL;
533 static char *opt_title = NULL;
534 static int oldbutton = 3; /* button event on startup: 3 = release */
535
536 static char *usedfont = NULL;
537 static double usedfontsize = 0;
538 static double defaultfontsize = 0;
539
540 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
541 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
542 static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
543 static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
544
545 /* Font Ring Cache */
546 enum {
547 FRC_NORMAL,
548 FRC_ITALIC,
549 FRC_BOLD,
550 FRC_ITALICBOLD
551 };
552
553 typedef struct {
554 XftFont *font;
555 int flags;
556 Rune unicodep;
557 } Fontcache;
558
559 /* Fontcache is an array now. A new font will be appended to the array. */
560 static Fontcache frc[16];
561 static int frclen = 0;
562
563 ssize_t
564 xwrite(int fd, const char *s, size_t len)
565 {
566 size_t aux = len;
567 ssize_t r;
568
569 while (len > 0) {
570 r = write(fd, s, len);
571 if (r < 0)
572 return r;
573 len -= r;
574 s += r;
575 }
576
577 return aux;
578 }
579
580 void *
581 xmalloc(size_t len)
582 {
583 void *p = malloc(len);
584
585 if (!p)
586 die("Out of memory\n");
587
588 return p;
589 }
590
591 void *
592 xrealloc(void *p, size_t len)
593 {
594 if ((p = realloc(p, len)) == NULL)
595 die("Out of memory\n");
596
597 return p;
598 }
599
600 char *
601 xstrdup(char *s)
602 {
603 if ((s = strdup(s)) == NULL)
604 die("Out of memory\n");
605
606 return s;
607 }
608
609 size_t
610 utf8decode(char *c, Rune *u, size_t clen)
611 {
612 size_t i, j, len, type;
613 Rune udecoded;
614
615 *u = UTF_INVALID;
616 if (!clen)
617 return 0;
618 udecoded = utf8decodebyte(c[0], &len);
619 if (!BETWEEN(len, 1, UTF_SIZ))
620 return 1;
621 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
622 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
623 if (type != 0)
624 return j;
625 }
626 if (j < len)
627 return 0;
628 *u = udecoded;
629 utf8validate(u, len);
630
631 return len;
632 }
633
634 Rune
635 utf8decodebyte(char c, size_t *i)
636 {
637 for (*i = 0; *i < LEN(utfmask); ++(*i))
638 if (((uchar)c & utfmask[*i]) == utfbyte[*i])
639 return (uchar)c & ~utfmask[*i];
640
641 return 0;
642 }
643
644 size_t
645 utf8encode(Rune u, char *c)
646 {
647 size_t len, i;
648
649 len = utf8validate(&u, 0);
650 if (len > UTF_SIZ)
651 return 0;
652
653 for (i = len - 1; i != 0; --i) {
654 c[i] = utf8encodebyte(u, 0);
655 u >>= 6;
656 }
657 c[0] = utf8encodebyte(u, len);
658
659 return len;
660 }
661
662 char
663 utf8encodebyte(Rune u, size_t i)
664 {
665 return utfbyte[i] | (u & ~utfmask[i]);
666 }
667
668 char *
669 utf8strchr(char *s, Rune u)
670 {
671 Rune r;
672 size_t i, j, len;
673
674 len = strlen(s);
675 for (i = 0, j = 0; i < len; i += j) {
676 if (!(j = utf8decode(&s[i], &r, len - i)))
677 break;
678 if (r == u)
679 return &(s[i]);
680 }
681
682 return NULL;
683 }
684
685 size_t
686 utf8validate(Rune *u, size_t i)
687 {
688 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
689 *u = UTF_INVALID;
690 for (i = 1; *u > utfmax[i]; ++i)
691 ;
692
693 return i;
694 }
695
696 void
697 selinit(void)
698 {
699 clock_gettime(CLOCK_MONOTONIC, &sel.tclick1);
700 clock_gettime(CLOCK_MONOTONIC, &sel.tclick2);
701 sel.mode = SEL_IDLE;
702 sel.snap = 0;
703 sel.ob.x = -1;
704 sel.primary = NULL;
705 sel.clipboard = NULL;
706 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
707 if (sel.xtarget == None)
708 sel.xtarget = XA_STRING;
709 }
710
711 int
712 x2col(int x)
713 {
714 x -= borderpx;
715 x /= xw.cw;
716
717 return LIMIT(x, 0, term.col-1);
718 }
719
720 int
721 y2row(int y)
722 {
723 y -= borderpx;
724 y /= xw.ch;
725
726 return LIMIT(y, 0, term.row-1);
727 }
728
729 int
730 tlinelen(int y)
731 {
732 int i = term.col;
733
734 if (term.line[y][i - 1].mode & ATTR_WRAP)
735 return i;
736
737 while (i > 0 && term.line[y][i - 1].u == ' ')
738 --i;
739
740 return i;
741 }
742
743 void
744 selnormalize(void)
745 {
746 int i;
747
748 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
749 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
750 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
751 } else {
752 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
753 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
754 }
755 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
756 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
757
758 selsnap(&sel.nb.x, &sel.nb.y, -1);
759 selsnap(&sel.ne.x, &sel.ne.y, +1);
760
761 /* expand selection over line breaks */
762 if (sel.type == SEL_RECTANGULAR)
763 return;
764 i = tlinelen(sel.nb.y);
765 if (i < sel.nb.x)
766 sel.nb.x = i;
767 if (tlinelen(sel.ne.y) <= sel.ne.x)
768 sel.ne.x = term.col - 1;
769 }
770
771 int
772 selected(int x, int y)
773 {
774 if (sel.mode == SEL_EMPTY)
775 return 0;
776
777 if (sel.type == SEL_RECTANGULAR)
778 return BETWEEN(y, sel.nb.y, sel.ne.y)
779 && BETWEEN(x, sel.nb.x, sel.ne.x);
780
781 return BETWEEN(y, sel.nb.y, sel.ne.y)
782 && (y != sel.nb.y || x >= sel.nb.x)
783 && (y != sel.ne.y || x <= sel.ne.x);
784 }
785
786 void
787 selsnap(int *x, int *y, int direction)
788 {
789 int newx, newy, xt, yt;
790 int delim, prevdelim;
791 Glyph *gp, *prevgp;
792
793 switch (sel.snap) {
794 case SNAP_WORD:
795 /*
796 * Snap around if the word wraps around at the end or
797 * beginning of a line.
798 */
799 prevgp = &term.line[*y][*x];
800 prevdelim = ISDELIM(prevgp->u);
801 for (;;) {
802 newx = *x + direction;
803 newy = *y;
804 if (!BETWEEN(newx, 0, term.col - 1)) {
805 newy += direction;
806 newx = (newx + term.col) % term.col;
807 if (!BETWEEN(newy, 0, term.row - 1))
808 break;
809
810 if (direction > 0)
811 yt = *y, xt = *x;
812 else
813 yt = newy, xt = newx;
814 if (!(term.line[yt][xt].mode & ATTR_WRAP))
815 break;
816 }
817
818 if (newx >= tlinelen(newy))
819 break;
820
821 gp = &term.line[newy][newx];
822 delim = ISDELIM(gp->u);
823 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
824 || (delim && gp->u != prevgp->u)))
825 break;
826
827 *x = newx;
828 *y = newy;
829 prevgp = gp;
830 prevdelim = delim;
831 }
832 break;
833 case SNAP_LINE:
834 /*
835 * Snap around if the the previous line or the current one
836 * has set ATTR_WRAP at its end. Then the whole next or
837 * previous line will be selected.
838 */
839 *x = (direction < 0) ? 0 : term.col - 1;
840 if (direction < 0) {
841 for (; *y > 0; *y += direction) {
842 if (!(term.line[*y-1][term.col-1].mode
843 & ATTR_WRAP)) {
844 break;
845 }
846 }
847 } else if (direction > 0) {
848 for (; *y < term.row-1; *y += direction) {
849 if (!(term.line[*y][term.col-1].mode
850 & ATTR_WRAP)) {
851 break;
852 }
853 }
854 }
855 break;
856 }
857 }
858
859 void
860 getbuttoninfo(XEvent *e)
861 {
862 int type;
863 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
864
865 sel.alt = IS_SET(MODE_ALTSCREEN);
866
867 sel.oe.x = x2col(e->xbutton.x);
868 sel.oe.y = y2row(e->xbutton.y);
869 selnormalize();
870
871 sel.type = SEL_REGULAR;
872 for (type = 1; type < LEN(selmasks); ++type) {
873 if (match(selmasks[type], state)) {
874 sel.type = type;
875 break;
876 }
877 }
878 }
879
880 void
881 mousereport(XEvent *e)
882 {
883 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
884 button = e->xbutton.button, state = e->xbutton.state,
885 len;
886 char buf[40];
887 static int ox, oy;
888
889 /* from urxvt */
890 if (e->xbutton.type == MotionNotify) {
891 if (x == ox && y == oy)
892 return;
893 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
894 return;
895 /* MOUSE_MOTION: no reporting if no button is pressed */
896 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
897 return;
898
899 button = oldbutton + 32;
900 ox = x;
901 oy = y;
902 } else {
903 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
904 button = 3;
905 } else {
906 button -= Button1;
907 if (button >= 3)
908 button += 64 - 3;
909 }
910 if (e->xbutton.type == ButtonPress) {
911 oldbutton = button;
912 ox = x;
913 oy = y;
914 } else if (e->xbutton.type == ButtonRelease) {
915 oldbutton = 3;
916 /* MODE_MOUSEX10: no button release reporting */
917 if (IS_SET(MODE_MOUSEX10))
918 return;
919 if (button == 64 || button == 65)
920 return;
921 }
922 }
923
924 if (!IS_SET(MODE_MOUSEX10)) {
925 button += ((state & ShiftMask ) ? 4 : 0)
926 + ((state & Mod4Mask ) ? 8 : 0)
927 + ((state & ControlMask) ? 16 : 0);
928 }
929
930 if (IS_SET(MODE_MOUSESGR)) {
931 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
932 button, x+1, y+1,
933 e->xbutton.type == ButtonRelease ? 'm' : 'M');
934 } else if (x < 223 && y < 223) {
935 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
936 32+button, 32+x+1, 32+y+1);
937 } else {
938 return;
939 }
940
941 ttywrite(buf, len);
942 }
943
944 void
945 bpress(XEvent *e)
946 {
947 struct timespec now;
948 MouseShortcut *ms;
949
950 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
951 mousereport(e);
952 return;
953 }
954
955 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
956 if (e->xbutton.button == ms->b
957 && match(ms->mask, e->xbutton.state)) {
958 ttysend(ms->s, strlen(ms->s));
959 return;
960 }
961 }
962
963 if (e->xbutton.button == Button1) {
964 clock_gettime(CLOCK_MONOTONIC, &now);
965
966 /* Clear previous selection, logically and visually. */
967 selclear(NULL);
968 sel.mode = SEL_EMPTY;
969 sel.type = SEL_REGULAR;
970 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
971 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
972
973 /*
974 * If the user clicks below predefined timeouts specific
975 * snapping behaviour is exposed.
976 */
977 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
978 sel.snap = SNAP_LINE;
979 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
980 sel.snap = SNAP_WORD;
981 } else {
982 sel.snap = 0;
983 }
984 selnormalize();
985
986 if (sel.snap != 0)
987 sel.mode = SEL_READY;
988 tsetdirt(sel.nb.y, sel.ne.y);
989 sel.tclick2 = sel.tclick1;
990 sel.tclick1 = now;
991 }
992 }
993
994 char *
995 getsel(void)
996 {
997 char *str, *ptr;
998 int y, bufsize, lastx, linelen;
999 Glyph *gp, *last;
1000
1001 if (sel.ob.x == -1)
1002 return NULL;
1003
1004 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
1005 ptr = str = xmalloc(bufsize);
1006
1007 /* append every set & selected glyph to the selection */
1008 for (y = sel.nb.y; y <= sel.ne.y; y++) {
1009 if ((linelen = tlinelen(y)) == 0) {
1010 *ptr++ = '\n';
1011 continue;
1012 }
1013
1014 if (sel.type == SEL_RECTANGULAR) {
1015 gp = &term.line[y][sel.nb.x];
1016 lastx = sel.ne.x;
1017 } else {
1018 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
1019 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
1020 }
1021 last = &term.line[y][MIN(lastx, linelen-1)];
1022 while (last >= gp && last->u == ' ')
1023 --last;
1024
1025 for ( ; gp <= last; ++gp) {
1026 if (gp->mode & ATTR_WDUMMY)
1027 continue;
1028
1029 ptr += utf8encode(gp->u, ptr);
1030 }
1031
1032 /*
1033 * Copy and pasting of line endings is inconsistent
1034 * in the inconsistent terminal and GUI world.
1035 * The best solution seems like to produce '\n' when
1036 * something is copied from st and convert '\n' to
1037 * '\r', when something to be pasted is received by
1038 * st.
1039 * FIXME: Fix the computer world.
1040 */
1041 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
1042 *ptr++ = '\n';
1043 }
1044 *ptr = 0;
1045 return str;
1046 }
1047
1048 void
1049 selcopy(Time t)
1050 {
1051 xsetsel(getsel(), t);
1052 }
1053
1054 void
1055 propnotify(XEvent *e)
1056 {
1057 XPropertyEvent *xpev;
1058 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1059
1060 xpev = &e->xproperty;
1061 if (xpev->state == PropertyNewValue &&
1062 (xpev->atom == XA_PRIMARY ||
1063 xpev->atom == clipboard)) {
1064 selnotify(e);
1065 }
1066 }
1067
1068 void
1069 selnotify(XEvent *e)
1070 {
1071 ulong nitems, ofs, rem;
1072 int format;
1073 uchar *data, *last, *repl;
1074 Atom type, incratom, property;
1075
1076 incratom = XInternAtom(xw.dpy, "INCR", 0);
1077
1078 ofs = 0;
1079 if (e->type == SelectionNotify) {
1080 property = e->xselection.property;
1081 } else if(e->type == PropertyNotify) {
1082 property = e->xproperty.atom;
1083 } else {
1084 return;
1085 }
1086 if (property == None)
1087 return;
1088
1089 do {
1090 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
1091 BUFSIZ/4, False, AnyPropertyType,
1092 &type, &format, &nitems, &rem,
1093 &data)) {
1094 fprintf(stderr, "Clipboard allocation failed\n");
1095 return;
1096 }
1097
1098 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
1099 /*
1100 * If there is some PropertyNotify with no data, then
1101 * this is the signal of the selection owner that all
1102 * data has been transferred. We won't need to receive
1103 * PropertyNotify events anymore.
1104 */
1105 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
1106 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1107 &xw.attrs);
1108 }
1109
1110 if (type == incratom) {
1111 /*
1112 * Activate the PropertyNotify events so we receive
1113 * when the selection owner does send us the next
1114 * chunk of data.
1115 */
1116 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
1117 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1118 &xw.attrs);
1119
1120 /*
1121 * Deleting the property is the transfer start signal.
1122 */
1123 XDeleteProperty(xw.dpy, xw.win, (int)property);
1124 continue;
1125 }
1126
1127 /*
1128 * As seen in getsel:
1129 * Line endings are inconsistent in the terminal and GUI world
1130 * copy and pasting. When receiving some selection data,
1131 * replace all '\n' with '\r'.
1132 * FIXME: Fix the computer world.
1133 */
1134 repl = data;
1135 last = data + nitems * format / 8;
1136 while ((repl = memchr(repl, '\n', last - repl))) {
1137 *repl++ = '\r';
1138 }
1139
1140 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
1141 ttywrite("\033[200~", 6);
1142 ttysend((char *)data, nitems * format / 8);
1143 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
1144 ttywrite("\033[201~", 6);
1145 XFree(data);
1146 /* number of 32-bit chunks returned */
1147 ofs += nitems * format / 32;
1148 } while (rem > 0);
1149
1150 /*
1151 * Deleting the property again tells the selection owner to send the
1152 * next data chunk in the property.
1153 */
1154 if (e->type == PropertyNotify)
1155 XDeleteProperty(xw.dpy, xw.win, (int)property);
1156 }
1157
1158 void
1159 selpaste(const Arg *dummy)
1160 {
1161 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1162 xw.win, CurrentTime);
1163 }
1164
1165 void
1166 clipcopy(const Arg *dummy)
1167 {
1168 Atom clipboard;
1169
1170 if (sel.clipboard != NULL)
1171 free(sel.clipboard);
1172
1173 if (sel.primary != NULL) {
1174 sel.clipboard = xstrdup(sel.primary);
1175 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1176 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1177 }
1178 }
1179
1180 void
1181 clippaste(const Arg *dummy)
1182 {
1183 Atom clipboard;
1184
1185 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1186 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1187 xw.win, CurrentTime);
1188 }
1189
1190 void
1191 selclear(XEvent *e)
1192 {
1193 if (sel.ob.x == -1)
1194 return;
1195 sel.mode = SEL_IDLE;
1196 sel.ob.x = -1;
1197 tsetdirt(sel.nb.y, sel.ne.y);
1198 }
1199
1200 void
1201 selrequest(XEvent *e)
1202 {
1203 XSelectionRequestEvent *xsre;
1204 XSelectionEvent xev;
1205 Atom xa_targets, string, clipboard;
1206 char *seltext;
1207
1208 xsre = (XSelectionRequestEvent *) e;
1209 xev.type = SelectionNotify;
1210 xev.requestor = xsre->requestor;
1211 xev.selection = xsre->selection;
1212 xev.target = xsre->target;
1213 xev.time = xsre->time;
1214 if (xsre->property == None)
1215 xsre->property = xsre->target;
1216
1217 /* reject */
1218 xev.property = None;
1219
1220 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1221 if (xsre->target == xa_targets) {
1222 /* respond with the supported type */
1223 string = sel.xtarget;
1224 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1225 XA_ATOM, 32, PropModeReplace,
1226 (uchar *) &string, 1);
1227 xev.property = xsre->property;
1228 } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1229 /*
1230 * xith XA_STRING non ascii characters may be incorrect in the
1231 * requestor. It is not our problem, use utf8.
1232 */
1233 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1234 if (xsre->selection == XA_PRIMARY) {
1235 seltext = sel.primary;
1236 } else if (xsre->selection == clipboard) {
1237 seltext = sel.clipboard;
1238 } else {
1239 fprintf(stderr,
1240 "Unhandled clipboard selection 0x%lx\n",
1241 xsre->selection);
1242 return;
1243 }
1244 if (seltext != NULL) {
1245 XChangeProperty(xsre->display, xsre->requestor,
1246 xsre->property, xsre->target,
1247 8, PropModeReplace,
1248 (uchar *)seltext, strlen(seltext));
1249 xev.property = xsre->property;
1250 }
1251 }
1252
1253 /* all done, send a notification to the listener */
1254 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
1255 fprintf(stderr, "Error sending SelectionNotify event\n");
1256 }
1257
1258 void
1259 xsetsel(char *str, Time t)
1260 {
1261 free(sel.primary);
1262 sel.primary = str;
1263
1264 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1265 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1266 selclear(0);
1267 }
1268
1269 void
1270 brelease(XEvent *e)
1271 {
1272 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1273 mousereport(e);
1274 return;
1275 }
1276
1277 if (e->xbutton.button == Button2) {
1278 selpaste(NULL);
1279 } else if (e->xbutton.button == Button1) {
1280 if (sel.mode == SEL_READY) {
1281 getbuttoninfo(e);
1282 selcopy(e->xbutton.time);
1283 } else
1284 selclear(NULL);
1285 sel.mode = SEL_IDLE;
1286 tsetdirt(sel.nb.y, sel.ne.y);
1287 }
1288 }
1289
1290 void
1291 bmotion(XEvent *e)
1292 {
1293 int oldey, oldex, oldsby, oldsey;
1294
1295 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1296 mousereport(e);
1297 return;
1298 }
1299
1300 if (!sel.mode)
1301 return;
1302
1303 sel.mode = SEL_READY;
1304 oldey = sel.oe.y;
1305 oldex = sel.oe.x;
1306 oldsby = sel.nb.y;
1307 oldsey = sel.ne.y;
1308 getbuttoninfo(e);
1309
1310 if (oldey != sel.oe.y || oldex != sel.oe.x)
1311 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1312 }
1313
1314 void
1315 die(const char *errstr, ...)
1316 {
1317 va_list ap;
1318
1319 va_start(ap, errstr);
1320 vfprintf(stderr, errstr, ap);
1321 va_end(ap);
1322 exit(1);
1323 }
1324
1325 void
1326 execsh(void)
1327 {
1328 char **args, *sh, *prog;
1329 const struct passwd *pw;
1330 char buf[sizeof(long) * 8 + 1];
1331
1332 errno = 0;
1333 if ((pw = getpwuid(getuid())) == NULL) {
1334 if (errno)
1335 die("getpwuid:%s\n", strerror(errno));
1336 else
1337 die("who are you?\n");
1338 }
1339
1340 if ((sh = getenv("SHELL")) == NULL)
1341 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1342
1343 if (opt_cmd)
1344 prog = opt_cmd[0];
1345 else if (utmp)
1346 prog = utmp;
1347 else
1348 prog = sh;
1349 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1350
1351 snprintf(buf, sizeof(buf), "%lu", xw.win);
1352
1353 unsetenv("COLUMNS");
1354 unsetenv("LINES");
1355 unsetenv("TERMCAP");
1356 setenv("LOGNAME", pw->pw_name, 1);
1357 setenv("USER", pw->pw_name, 1);
1358 setenv("SHELL", sh, 1);
1359 setenv("HOME", pw->pw_dir, 1);
1360 setenv("TERM", termname, 1);
1361 setenv("WINDOWID", buf, 1);
1362
1363 signal(SIGCHLD, SIG_DFL);
1364 signal(SIGHUP, SIG_DFL);
1365 signal(SIGINT, SIG_DFL);
1366 signal(SIGQUIT, SIG_DFL);
1367 signal(SIGTERM, SIG_DFL);
1368 signal(SIGALRM, SIG_DFL);
1369
1370 execvp(prog, args);
1371 _exit(1);
1372 }
1373
1374 void
1375 sigchld(int a)
1376 {
1377 int stat;
1378 pid_t p;
1379
1380 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
1381 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1382
1383 if (pid != p)
1384 return;
1385
1386 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
1387 die("child finished with error '%d'\n", stat);
1388 exit(0);
1389 }
1390
1391
1392 void
1393 stty(void)
1394 {
1395 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1396 size_t n, siz;
1397
1398 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
1399 die("incorrect stty parameters\n");
1400 memcpy(cmd, stty_args, n);
1401 q = cmd + n;
1402 siz = sizeof(cmd) - n;
1403 for (p = opt_cmd; p && (s = *p); ++p) {
1404 if ((n = strlen(s)) > siz-1)
1405 die("stty parameter length too long\n");
1406 *q++ = ' ';
1407 memcpy(q, s, n);
1408 q += n;
1409 siz -= n + 1;
1410 }
1411 *q = '\0';
1412 if (system(cmd) != 0)
1413 perror("Couldn't call stty");
1414 }
1415
1416 void
1417 ttynew(void)
1418 {
1419 int m, s;
1420 struct winsize w = {term.row, term.col, 0, 0};
1421
1422 if (opt_io) {
1423 term.mode |= MODE_PRINT;
1424 iofd = (!strcmp(opt_io, "-")) ?
1425 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
1426 if (iofd < 0) {
1427 fprintf(stderr, "Error opening %s:%s\n",
1428 opt_io, strerror(errno));
1429 }
1430 }
1431
1432 if (opt_line) {
1433 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
1434 die("open line failed: %s\n", strerror(errno));
1435 dup2(cmdfd, 0);
1436 stty();
1437 return;
1438 }
1439
1440 /* seems to work fine on linux, openbsd and freebsd */
1441 if (openpty(&m, &s, NULL, NULL, &w) < 0)
1442 die("openpty failed: %s\n", strerror(errno));
1443
1444 switch (pid = fork()) {
1445 case -1:
1446 die("fork failed\n");
1447 break;
1448 case 0:
1449 close(iofd);
1450 setsid(); /* create a new process group */
1451 dup2(s, 0);
1452 dup2(s, 1);
1453 dup2(s, 2);
1454 if (ioctl(s, TIOCSCTTY, NULL) < 0)
1455 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1456 close(s);
1457 close(m);
1458 execsh();
1459 break;
1460 default:
1461 close(s);
1462 cmdfd = m;
1463 signal(SIGCHLD, sigchld);
1464 break;
1465 }
1466 }
1467
1468 size_t
1469 ttyread(void)
1470 {
1471 static char buf[BUFSIZ];
1472 static int buflen = 0;
1473 char *ptr;
1474 int charsize; /* size of utf8 char in bytes */
1475 Rune unicodep;
1476 int ret;
1477
1478 /* append read bytes to unprocessed bytes */
1479 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1480 die("Couldn't read from shell: %s\n", strerror(errno));
1481
1482 /* process every complete utf8 char */
1483 buflen += ret;
1484 ptr = buf;
1485 while ((charsize = utf8decode(ptr, &unicodep, buflen))) {
1486 tputc(unicodep);
1487 ptr += charsize;
1488 buflen -= charsize;
1489 }
1490
1491 /* keep any uncomplete utf8 char for the next call */
1492 memmove(buf, ptr, buflen);
1493
1494 return ret;
1495 }
1496
1497 void
1498 ttywrite(const char *s, size_t n)
1499 {
1500 fd_set wfd, rfd;
1501 ssize_t r;
1502 size_t lim = 256;
1503
1504 /*
1505 * Remember that we are using a pty, which might be a modem line.
1506 * Writing too much will clog the line. That's why we are doing this
1507 * dance.
1508 * FIXME: Migrate the world to Plan 9.
1509 */
1510 while (n > 0) {
1511 FD_ZERO(&wfd);
1512 FD_ZERO(&rfd);
1513 FD_SET(cmdfd, &wfd);
1514 FD_SET(cmdfd, &rfd);
1515
1516 /* Check if we can write. */
1517 if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
1518 if (errno == EINTR)
1519 continue;
1520 die("select failed: %s\n", strerror(errno));
1521 }
1522 if (FD_ISSET(cmdfd, &wfd)) {
1523 /*
1524 * Only write the bytes written by ttywrite() or the
1525 * default of 256. This seems to be a reasonable value
1526 * for a serial line. Bigger values might clog the I/O.
1527 */
1528 if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
1529 goto write_error;
1530 if (r < n) {
1531 /*
1532 * We weren't able to write out everything.
1533 * This means the buffer is getting full
1534 * again. Empty it.
1535 */
1536 if (n < lim)
1537 lim = ttyread();
1538 n -= r;
1539 s += r;
1540 } else {
1541 /* All bytes have been written. */
1542 break;
1543 }
1544 }
1545 if (FD_ISSET(cmdfd, &rfd))
1546 lim = ttyread();
1547 }
1548 return;
1549
1550 write_error:
1551 die("write error on tty: %s\n", strerror(errno));
1552 }
1553
1554 void
1555 ttysend(char *s, size_t n)
1556 {
1557 int len;
1558 Rune u;
1559
1560 ttywrite(s, n);
1561 if (IS_SET(MODE_ECHO))
1562 while ((len = utf8decode(s, &u, n)) > 0) {
1563 techo(u);
1564 n -= len;
1565 s += len;
1566 }
1567 }
1568
1569 void
1570 ttyresize(void)
1571 {
1572 struct winsize w;
1573
1574 w.ws_row = term.row;
1575 w.ws_col = term.col;
1576 w.ws_xpixel = xw.tw;
1577 w.ws_ypixel = xw.th;
1578 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1579 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1580 }
1581
1582 int
1583 tattrset(int attr)
1584 {
1585 int i, j;
1586
1587 for (i = 0; i < term.row-1; i++) {
1588 for (j = 0; j < term.col-1; j++) {
1589 if (term.line[i][j].mode & attr)
1590 return 1;
1591 }
1592 }
1593
1594 return 0;
1595 }
1596
1597 void
1598 tsetdirt(int top, int bot)
1599 {
1600 int i;
1601
1602 LIMIT(top, 0, term.row-1);
1603 LIMIT(bot, 0, term.row-1);
1604
1605 for (i = top; i <= bot; i++)
1606 term.dirty[i] = 1;
1607 }
1608
1609 void
1610 tsetdirtattr(int attr)
1611 {
1612 int i, j;
1613
1614 for (i = 0; i < term.row-1; i++) {
1615 for (j = 0; j < term.col-1; j++) {
1616 if (term.line[i][j].mode & attr) {
1617 tsetdirt(i, i);
1618 break;
1619 }
1620 }
1621 }
1622 }
1623
1624 void
1625 tfulldirt(void)
1626 {
1627 tsetdirt(0, term.row-1);
1628 }
1629
1630 void
1631 tcursor(int mode)
1632 {
1633 static TCursor c[2];
1634 int alt = IS_SET(MODE_ALTSCREEN);
1635
1636 if (mode == CURSOR_SAVE) {
1637 c[alt] = term.c;
1638 } else if (mode == CURSOR_LOAD) {
1639 term.c = c[alt];
1640 tmoveto(c[alt].x, c[alt].y);
1641 }
1642 }
1643
1644 void
1645 treset(void)
1646 {
1647 uint i;
1648
1649 term.c = (TCursor){{
1650 .mode = ATTR_NULL,
1651 .fg = defaultfg,
1652 .bg = defaultbg
1653 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1654
1655 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1656 for (i = tabspaces; i < term.col; i += tabspaces)
1657 term.tabs[i] = 1;
1658 term.top = 0;
1659 term.bot = term.row - 1;
1660 term.mode = MODE_WRAP;
1661 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1662 term.charset = 0;
1663
1664 for (i = 0; i < 2; i++) {
1665 tmoveto(0, 0);
1666 tcursor(CURSOR_SAVE);
1667 tclearregion(0, 0, term.col-1, term.row-1);
1668 tswapscreen();
1669 }
1670 }
1671
1672 void
1673 tnew(int col, int row)
1674 {
1675 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1676 tresize(col, row);
1677 term.numlock = 1;
1678
1679 treset();
1680 }
1681
1682 void
1683 tswapscreen(void)
1684 {
1685 Line *tmp = term.line;
1686
1687 term.line = term.alt;
1688 term.alt = tmp;
1689 term.mode ^= MODE_ALTSCREEN;
1690 tfulldirt();
1691 }
1692
1693 void
1694 tscrolldown(int orig, int n)
1695 {
1696 int i;
1697 Line temp;
1698
1699 LIMIT(n, 0, term.bot-orig+1);
1700
1701 tsetdirt(orig, term.bot-n);
1702 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1703
1704 for (i = term.bot; i >= orig+n; i--) {
1705 temp = term.line[i];
1706 term.line[i] = term.line[i-n];
1707 term.line[i-n] = temp;
1708 }
1709
1710 selscroll(orig, n);
1711 }
1712
1713 void
1714 tscrollup(int orig, int n)
1715 {
1716 int i;
1717 Line temp;
1718
1719 LIMIT(n, 0, term.bot-orig+1);
1720
1721 tclearregion(0, orig, term.col-1, orig+n-1);
1722 tsetdirt(orig+n, term.bot);
1723
1724 for (i = orig; i <= term.bot-n; i++) {
1725 temp = term.line[i];
1726 term.line[i] = term.line[i+n];
1727 term.line[i+n] = temp;
1728 }
1729
1730 selscroll(orig, -n);
1731 }
1732
1733 void
1734 selscroll(int orig, int n)
1735 {
1736 if (sel.ob.x == -1)
1737 return;
1738
1739 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1740 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1741 selclear(NULL);
1742 return;
1743 }
1744 if (sel.type == SEL_RECTANGULAR) {
1745 if (sel.ob.y < term.top)
1746 sel.ob.y = term.top;
1747 if (sel.oe.y > term.bot)
1748 sel.oe.y = term.bot;
1749 } else {
1750 if (sel.ob.y < term.top) {
1751 sel.ob.y = term.top;
1752 sel.ob.x = 0;
1753 }
1754 if (sel.oe.y > term.bot) {
1755 sel.oe.y = term.bot;
1756 sel.oe.x = term.col;
1757 }
1758 }
1759 selnormalize();
1760 }
1761 }
1762
1763 void
1764 tnewline(int first_col)
1765 {
1766 int y = term.c.y;
1767
1768 if (y == term.bot) {
1769 tscrollup(term.top, 1);
1770 } else {
1771 y++;
1772 }
1773 tmoveto(first_col ? 0 : term.c.x, y);
1774 }
1775
1776 void
1777 csiparse(void)
1778 {
1779 char *p = csiescseq.buf, *np;
1780 long int v;
1781
1782 csiescseq.narg = 0;
1783 if (*p == '?') {
1784 csiescseq.priv = 1;
1785 p++;
1786 }
1787
1788 csiescseq.buf[csiescseq.len] = '\0';
1789 while (p < csiescseq.buf+csiescseq.len) {
1790 np = NULL;
1791 v = strtol(p, &np, 10);
1792 if (np == p)
1793 v = 0;
1794 if (v == LONG_MAX || v == LONG_MIN)
1795 v = -1;
1796 csiescseq.arg[csiescseq.narg++] = v;
1797 p = np;
1798 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1799 break;
1800 p++;
1801 }
1802 csiescseq.mode[0] = *p++;
1803 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1804 }
1805
1806 /* for absolute user moves, when decom is set */
1807 void
1808 tmoveato(int x, int y)
1809 {
1810 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1811 }
1812
1813 void
1814 tmoveto(int x, int y)
1815 {
1816 int miny, maxy;
1817
1818 if (term.c.state & CURSOR_ORIGIN) {
1819 miny = term.top;
1820 maxy = term.bot;
1821 } else {
1822 miny = 0;
1823 maxy = term.row - 1;
1824 }
1825 term.c.state &= ~CURSOR_WRAPNEXT;
1826 term.c.x = LIMIT(x, 0, term.col-1);
1827 term.c.y = LIMIT(y, miny, maxy);
1828 }
1829
1830 void
1831 tsetchar(Rune u, Glyph *attr, int x, int y)
1832 {
1833 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1834 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1835 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1836 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1837 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1838 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1839 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1840 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1841 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1842 };
1843
1844 /*
1845 * The table is proudly stolen from rxvt.
1846 */
1847 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1848 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1849 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1850
1851 if (term.line[y][x].mode & ATTR_WIDE) {
1852 if (x+1 < term.col) {
1853 term.line[y][x+1].u = ' ';
1854 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1855 }
1856 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1857 term.line[y][x-1].u = ' ';
1858 term.line[y][x-1].mode &= ~ATTR_WIDE;
1859 }
1860
1861 term.dirty[y] = 1;
1862 term.line[y][x] = *attr;
1863 term.line[y][x].u = u;
1864 }
1865
1866 void
1867 tclearregion(int x1, int y1, int x2, int y2)
1868 {
1869 int x, y, temp;
1870 Glyph *gp;
1871
1872 if (x1 > x2)
1873 temp = x1, x1 = x2, x2 = temp;
1874 if (y1 > y2)
1875 temp = y1, y1 = y2, y2 = temp;
1876
1877 LIMIT(x1, 0, term.col-1);
1878 LIMIT(x2, 0, term.col-1);
1879 LIMIT(y1, 0, term.row-1);
1880 LIMIT(y2, 0, term.row-1);
1881
1882 for (y = y1; y <= y2; y++) {
1883 term.dirty[y] = 1;
1884 for (x = x1; x <= x2; x++) {
1885 gp = &term.line[y][x];
1886 if (selected(x, y))
1887 selclear(NULL);
1888 gp->fg = term.c.attr.fg;
1889 gp->bg = term.c.attr.bg;
1890 gp->mode = 0;
1891 gp->u = ' ';
1892 }
1893 }
1894 }
1895
1896 void
1897 tdeletechar(int n)
1898 {
1899 int dst, src, size;
1900 Glyph *line;
1901
1902 LIMIT(n, 0, term.col - term.c.x);
1903
1904 dst = term.c.x;
1905 src = term.c.x + n;
1906 size = term.col - src;
1907 line = term.line[term.c.y];
1908
1909 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1910 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1911 }
1912
1913 void
1914 tinsertblank(int n)
1915 {
1916 int dst, src, size;
1917 Glyph *line;
1918
1919 LIMIT(n, 0, term.col - term.c.x);
1920
1921 dst = term.c.x + n;
1922 src = term.c.x;
1923 size = term.col - dst;
1924 line = term.line[term.c.y];
1925
1926 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1927 tclearregion(src, term.c.y, dst - 1, term.c.y);
1928 }
1929
1930 void
1931 tinsertblankline(int n)
1932 {
1933 if (BETWEEN(term.c.y, term.top, term.bot))
1934 tscrolldown(term.c.y, n);
1935 }
1936
1937 void
1938 tdeleteline(int n)
1939 {
1940 if (BETWEEN(term.c.y, term.top, term.bot))
1941 tscrollup(term.c.y, n);
1942 }
1943
1944 int32_t
1945 tdefcolor(int *attr, int *npar, int l)
1946 {
1947 int32_t idx = -1;
1948 uint r, g, b;
1949
1950 switch (attr[*npar + 1]) {
1951 case 2: /* direct color in RGB space */
1952 if (*npar + 4 >= l) {
1953 fprintf(stderr,
1954 "erresc(38): Incorrect number of parameters (%d)\n",
1955 *npar);
1956 break;
1957 }
1958 r = attr[*npar + 2];
1959 g = attr[*npar + 3];
1960 b = attr[*npar + 4];
1961 *npar += 4;
1962 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1963 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1964 r, g, b);
1965 else
1966 idx = TRUECOLOR(r, g, b);
1967 break;
1968 case 5: /* indexed color */
1969 if (*npar + 2 >= l) {
1970 fprintf(stderr,
1971 "erresc(38): Incorrect number of parameters (%d)\n",
1972 *npar);
1973 break;
1974 }
1975 *npar += 2;
1976 if (!BETWEEN(attr[*npar], 0, 255))
1977 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1978 else
1979 idx = attr[*npar];
1980 break;
1981 case 0: /* implemented defined (only foreground) */
1982 case 1: /* transparent */
1983 case 3: /* direct color in CMY space */
1984 case 4: /* direct color in CMYK space */
1985 default:
1986 fprintf(stderr,
1987 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1988 break;
1989 }
1990
1991 return idx;
1992 }
1993
1994 void
1995 tsetattr(int *attr, int l)
1996 {
1997 int i;
1998 int32_t idx;
1999
2000 for (i = 0; i < l; i++) {
2001 switch (attr[i]) {
2002 case 0:
2003 term.c.attr.mode &= ~(
2004 ATTR_BOLD |
2005 ATTR_FAINT |
2006 ATTR_ITALIC |
2007 ATTR_UNDERLINE |
2008 ATTR_BLINK |
2009 ATTR_REVERSE |
2010 ATTR_INVISIBLE |
2011 ATTR_STRUCK );
2012 term.c.attr.fg = defaultfg;
2013 term.c.attr.bg = defaultbg;
2014 break;
2015 case 1:
2016 term.c.attr.mode |= ATTR_BOLD;
2017 break;
2018 case 2:
2019 term.c.attr.mode |= ATTR_FAINT;
2020 break;
2021 case 3:
2022 term.c.attr.mode |= ATTR_ITALIC;
2023 break;
2024 case 4:
2025 term.c.attr.mode |= ATTR_UNDERLINE;
2026 break;
2027 case 5: /* slow blink */
2028 /* FALLTHROUGH */
2029 case 6: /* rapid blink */
2030 term.c.attr.mode |= ATTR_BLINK;
2031 break;
2032 case 7:
2033 term.c.attr.mode |= ATTR_REVERSE;
2034 break;
2035 case 8:
2036 term.c.attr.mode |= ATTR_INVISIBLE;
2037 break;
2038 case 9:
2039 term.c.attr.mode |= ATTR_STRUCK;
2040 break;
2041 case 22:
2042 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
2043 break;
2044 case 23:
2045 term.c.attr.mode &= ~ATTR_ITALIC;
2046 break;
2047 case 24:
2048 term.c.attr.mode &= ~ATTR_UNDERLINE;
2049 break;
2050 case 25:
2051 term.c.attr.mode &= ~ATTR_BLINK;
2052 break;
2053 case 27:
2054 term.c.attr.mode &= ~ATTR_REVERSE;
2055 break;
2056 case 28:
2057 term.c.attr.mode &= ~ATTR_INVISIBLE;
2058 break;
2059 case 29:
2060 term.c.attr.mode &= ~ATTR_STRUCK;
2061 break;
2062 case 38:
2063 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2064 term.c.attr.fg = idx;
2065 break;
2066 case 39:
2067 term.c.attr.fg = defaultfg;
2068 break;
2069 case 48:
2070 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2071 term.c.attr.bg = idx;
2072 break;
2073 case 49:
2074 term.c.attr.bg = defaultbg;
2075 break;
2076 default:
2077 if (BETWEEN(attr[i], 30, 37)) {
2078 term.c.attr.fg = attr[i] - 30;
2079 } else if (BETWEEN(attr[i], 40, 47)) {
2080 term.c.attr.bg = attr[i] - 40;
2081 } else if (BETWEEN(attr[i], 90, 97)) {
2082 term.c.attr.fg = attr[i] - 90 + 8;
2083 } else if (BETWEEN(attr[i], 100, 107)) {
2084 term.c.attr.bg = attr[i] - 100 + 8;
2085 } else {
2086 fprintf(stderr,
2087 "erresc(default): gfx attr %d unknown\n",
2088 attr[i]), csidump();
2089 }
2090 break;
2091 }
2092 }
2093 }
2094
2095 void
2096 tsetscroll(int t, int b)
2097 {
2098 int temp;
2099
2100 LIMIT(t, 0, term.row-1);
2101 LIMIT(b, 0, term.row-1);
2102 if (t > b) {
2103 temp = t;
2104 t = b;
2105 b = temp;
2106 }
2107 term.top = t;
2108 term.bot = b;
2109 }
2110
2111 void
2112 tsetmode(int priv, int set, int *args, int narg)
2113 {
2114 int *lim, mode;
2115 int alt;
2116
2117 for (lim = args + narg; args < lim; ++args) {
2118 if (priv) {
2119 switch (*args) {
2120 case 1: /* DECCKM -- Cursor key */
2121 MODBIT(term.mode, set, MODE_APPCURSOR);
2122 break;
2123 case 5: /* DECSCNM -- Reverse video */
2124 mode = term.mode;
2125 MODBIT(term.mode, set, MODE_REVERSE);
2126 if (mode != term.mode)
2127 redraw();
2128 break;
2129 case 6: /* DECOM -- Origin */
2130 MODBIT(term.c.state, set, CURSOR_ORIGIN);
2131 tmoveato(0, 0);
2132 break;
2133 case 7: /* DECAWM -- Auto wrap */
2134 MODBIT(term.mode, set, MODE_WRAP);
2135 break;
2136 case 0: /* Error (IGNORED) */
2137 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
2138 case 3: /* DECCOLM -- Column (IGNORED) */
2139 case 4: /* DECSCLM -- Scroll (IGNORED) */
2140 case 8: /* DECARM -- Auto repeat (IGNORED) */
2141 case 18: /* DECPFF -- Printer feed (IGNORED) */
2142 case 19: /* DECPEX -- Printer extent (IGNORED) */
2143 case 42: /* DECNRCM -- National characters (IGNORED) */
2144 case 12: /* att610 -- Start blinking cursor (IGNORED) */
2145 break;
2146 case 25: /* DECTCEM -- Text Cursor Enable Mode */
2147 MODBIT(term.mode, !set, MODE_HIDE);
2148 break;
2149 case 9: /* X10 mouse compatibility mode */
2150 xsetpointermotion(0);
2151 MODBIT(term.mode, 0, MODE_MOUSE);
2152 MODBIT(term.mode, set, MODE_MOUSEX10);
2153 break;
2154 case 1000: /* 1000: report button press */
2155 xsetpointermotion(0);
2156 MODBIT(term.mode, 0, MODE_MOUSE);
2157 MODBIT(term.mode, set, MODE_MOUSEBTN);
2158 break;
2159 case 1002: /* 1002: report motion on button press */
2160 xsetpointermotion(0);
2161 MODBIT(term.mode, 0, MODE_MOUSE);
2162 MODBIT(term.mode, set, MODE_MOUSEMOTION);
2163 break;
2164 case 1003: /* 1003: enable all mouse motions */
2165 xsetpointermotion(set);
2166 MODBIT(term.mode, 0, MODE_MOUSE);
2167 MODBIT(term.mode, set, MODE_MOUSEMANY);
2168 break;
2169 case 1004: /* 1004: send focus events to tty */
2170 MODBIT(term.mode, set, MODE_FOCUS);
2171 break;
2172 case 1006: /* 1006: extended reporting mode */
2173 MODBIT(term.mode, set, MODE_MOUSESGR);
2174 break;
2175 case 1034:
2176 MODBIT(term.mode, set, MODE_8BIT);
2177 break;
2178 case 1049: /* swap screen & set/restore cursor as xterm */
2179 if (!allowaltscreen)
2180 break;
2181 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2182 /* FALLTHROUGH */
2183 case 47: /* swap screen */
2184 case 1047:
2185 if (!allowaltscreen)
2186 break;
2187 alt = IS_SET(MODE_ALTSCREEN);
2188 if (alt) {
2189 tclearregion(0, 0, term.col-1,
2190 term.row-1);
2191 }
2192 if (set ^ alt) /* set is always 1 or 0 */
2193 tswapscreen();
2194 if (*args != 1049)
2195 break;
2196 /* FALLTHROUGH */
2197 case 1048:
2198 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2199 break;
2200 case 2004: /* 2004: bracketed paste mode */
2201 MODBIT(term.mode, set, MODE_BRCKTPASTE);
2202 break;
2203 /* Not implemented mouse modes. See comments there. */
2204 case 1001: /* mouse highlight mode; can hang the
2205 terminal by design when implemented. */
2206 case 1005: /* UTF-8 mouse mode; will confuse
2207 applications not supporting UTF-8
2208 and luit. */
2209 case 1015: /* urxvt mangled mouse mode; incompatible
2210 and can be mistaken for other control
2211 codes. */
2212 default:
2213 fprintf(stderr,
2214 "erresc: unknown private set/reset mode %d\n",
2215 *args);
2216 break;
2217 }
2218 } else {
2219 switch (*args) {
2220 case 0: /* Error (IGNORED) */
2221 break;
2222 case 2: /* KAM -- keyboard action */
2223 MODBIT(term.mode, set, MODE_KBDLOCK);
2224 break;
2225 case 4: /* IRM -- Insertion-replacement */
2226 MODBIT(term.mode, set, MODE_INSERT);
2227 break;
2228 case 12: /* SRM -- Send/Receive */
2229 MODBIT(term.mode, !set, MODE_ECHO);
2230 break;
2231 case 20: /* LNM -- Linefeed/new line */
2232 MODBIT(term.mode, set, MODE_CRLF);
2233 break;
2234 default:
2235 fprintf(stderr,
2236 "erresc: unknown set/reset mode %d\n",
2237 *args);
2238 break;
2239 }
2240 }
2241 }
2242 }
2243
2244 void
2245 csihandle(void)
2246 {
2247 char buf[40];
2248 int len;
2249
2250 switch (csiescseq.mode[0]) {
2251 default:
2252 unknown:
2253 fprintf(stderr, "erresc: unknown csi ");
2254 csidump();
2255 /* die(""); */
2256 break;
2257 case '@': /* ICH -- Insert <n> blank char */
2258 DEFAULT(csiescseq.arg[0], 1);
2259 tinsertblank(csiescseq.arg[0]);
2260 break;
2261 case 'A': /* CUU -- Cursor <n> Up */
2262 DEFAULT(csiescseq.arg[0], 1);
2263 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2264 break;
2265 case 'B': /* CUD -- Cursor <n> Down */
2266 case 'e': /* VPR --Cursor <n> Down */
2267 DEFAULT(csiescseq.arg[0], 1);
2268 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2269 break;
2270 case 'i': /* MC -- Media Copy */
2271 switch (csiescseq.arg[0]) {
2272 case 0:
2273 tdump();
2274 break;
2275 case 1:
2276 tdumpline(term.c.y);
2277 break;
2278 case 2:
2279 tdumpsel();
2280 break;
2281 case 4:
2282 term.mode &= ~MODE_PRINT;
2283 break;
2284 case 5:
2285 term.mode |= MODE_PRINT;
2286 break;
2287 }
2288 break;
2289 case 'c': /* DA -- Device Attributes */
2290 if (csiescseq.arg[0] == 0)
2291 ttywrite(vtiden, sizeof(vtiden) - 1);
2292 break;
2293 case 'C': /* CUF -- Cursor <n> Forward */
2294 case 'a': /* HPR -- Cursor <n> Forward */
2295 DEFAULT(csiescseq.arg[0], 1);
2296 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2297 break;
2298 case 'D': /* CUB -- Cursor <n> Backward */
2299 DEFAULT(csiescseq.arg[0], 1);
2300 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2301 break;
2302 case 'E': /* CNL -- Cursor <n> Down and first col */
2303 DEFAULT(csiescseq.arg[0], 1);
2304 tmoveto(0, term.c.y+csiescseq.arg[0]);
2305 break;
2306 case 'F': /* CPL -- Cursor <n> Up and first col */
2307 DEFAULT(csiescseq.arg[0], 1);
2308 tmoveto(0, term.c.y-csiescseq.arg[0]);
2309 break;
2310 case 'g': /* TBC -- Tabulation clear */
2311 switch (csiescseq.arg[0]) {
2312 case 0: /* clear current tab stop */
2313 term.tabs[term.c.x] = 0;
2314 break;
2315 case 3: /* clear all the tabs */
2316 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2317 break;
2318 default:
2319 goto unknown;
2320 }
2321 break;
2322 case 'G': /* CHA -- Move to <col> */
2323 case '`': /* HPA */
2324 DEFAULT(csiescseq.arg[0], 1);
2325 tmoveto(csiescseq.arg[0]-1, term.c.y);
2326 break;
2327 case 'H': /* CUP -- Move to <row> <col> */
2328 case 'f': /* HVP */
2329 DEFAULT(csiescseq.arg[0], 1);
2330 DEFAULT(csiescseq.arg[1], 1);
2331 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2332 break;
2333 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2334 DEFAULT(csiescseq.arg[0], 1);
2335 tputtab(csiescseq.arg[0]);
2336 break;
2337 case 'J': /* ED -- Clear screen */
2338 selclear(NULL);
2339 switch (csiescseq.arg[0]) {
2340 case 0: /* below */
2341 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2342 if (term.c.y < term.row-1) {
2343 tclearregion(0, term.c.y+1, term.col-1,
2344 term.row-1);
2345 }
2346 break;
2347 case 1: /* above */
2348 if (term.c.y > 1)
2349 tclearregion(0, 0, term.col-1, term.c.y-1);
2350 tclearregion(0, term.c.y, term.c.x, term.c.y);
2351 break;
2352 case 2: /* all */
2353 tclearregion(0, 0, term.col-1, term.row-1);
2354 break;
2355 default:
2356 goto unknown;
2357 }
2358 break;
2359 case 'K': /* EL -- Clear line */
2360 switch (csiescseq.arg[0]) {
2361 case 0: /* right */
2362 tclearregion(term.c.x, term.c.y, term.col-1,
2363 term.c.y);
2364 break;
2365 case 1: /* left */
2366 tclearregion(0, term.c.y, term.c.x, term.c.y);
2367 break;
2368 case 2: /* all */
2369 tclearregion(0, term.c.y, term.col-1, term.c.y);
2370 break;
2371 }
2372 break;
2373 case 'S': /* SU -- Scroll <n> line up */
2374 DEFAULT(csiescseq.arg[0], 1);
2375 tscrollup(term.top, csiescseq.arg[0]);
2376 break;
2377 case 'T': /* SD -- Scroll <n> line down */
2378 DEFAULT(csiescseq.arg[0], 1);
2379 tscrolldown(term.top, csiescseq.arg[0]);
2380 break;
2381 case 'L': /* IL -- Insert <n> blank lines */
2382 DEFAULT(csiescseq.arg[0], 1);
2383 tinsertblankline(csiescseq.arg[0]);
2384 break;
2385 case 'l': /* RM -- Reset Mode */
2386 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2387 break;
2388 case 'M': /* DL -- Delete <n> lines */
2389 DEFAULT(csiescseq.arg[0], 1);
2390 tdeleteline(csiescseq.arg[0]);
2391 break;
2392 case 'X': /* ECH -- Erase <n> char */
2393 DEFAULT(csiescseq.arg[0], 1);
2394 tclearregion(term.c.x, term.c.y,
2395 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2396 break;
2397 case 'P': /* DCH -- Delete <n> char */
2398 DEFAULT(csiescseq.arg[0], 1);
2399 tdeletechar(csiescseq.arg[0]);
2400 break;
2401 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2402 DEFAULT(csiescseq.arg[0], 1);
2403 tputtab(-csiescseq.arg[0]);
2404 break;
2405 case 'd': /* VPA -- Move to <row> */
2406 DEFAULT(csiescseq.arg[0], 1);
2407 tmoveato(term.c.x, csiescseq.arg[0]-1);
2408 break;
2409 case 'h': /* SM -- Set terminal mode */
2410 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2411 break;
2412 case 'm': /* SGR -- Terminal attribute (color) */
2413 tsetattr(csiescseq.arg, csiescseq.narg);
2414 break;
2415 case 'n': /* DSR – Device Status Report (cursor position) */
2416 if (csiescseq.arg[0] == 6) {
2417 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2418 term.c.y+1, term.c.x+1);
2419 ttywrite(buf, len);
2420 }
2421 break;
2422 case 'r': /* DECSTBM -- Set Scrolling Region */
2423 if (csiescseq.priv) {
2424 goto unknown;
2425 } else {
2426 DEFAULT(csiescseq.arg[0], 1);
2427 DEFAULT(csiescseq.arg[1], term.row);
2428 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2429 tmoveato(0, 0);
2430 }
2431 break;
2432 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2433 tcursor(CURSOR_SAVE);
2434 break;
2435 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2436 tcursor(CURSOR_LOAD);
2437 break;
2438 case ' ':
2439 switch (csiescseq.mode[1]) {
2440 case 'q': /* DECSCUSR -- Set Cursor Style */
2441 DEFAULT(csiescseq.arg[0], 1);
2442 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2443 goto unknown;
2444 }
2445 xw.cursor = csiescseq.arg[0];
2446 break;
2447 default:
2448 goto unknown;
2449 }
2450 break;
2451 }
2452 }
2453
2454 void
2455 csidump(void)
2456 {
2457 int i;
2458 uint c;
2459
2460 printf("ESC[");
2461 for (i = 0; i < csiescseq.len; i++) {
2462 c = csiescseq.buf[i] & 0xff;
2463 if (isprint(c)) {
2464 putchar(c);
2465 } else if (c == '\n') {
2466 printf("(\\n)");
2467 } else if (c == '\r') {
2468 printf("(\\r)");
2469 } else if (c == 0x1b) {
2470 printf("(\\e)");
2471 } else {
2472 printf("(%02x)", c);
2473 }
2474 }
2475 putchar('\n');
2476 }
2477
2478 void
2479 csireset(void)
2480 {
2481 memset(&csiescseq, 0, sizeof(csiescseq));
2482 }
2483
2484 void
2485 strhandle(void)
2486 {
2487 char *p = NULL;
2488 int j, narg, par;
2489
2490 term.esc &= ~(ESC_STR_END|ESC_STR);
2491 strparse();
2492 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2493
2494 switch (strescseq.type) {
2495 case ']': /* OSC -- Operating System Command */
2496 switch (par) {
2497 case 0:
2498 case 1:
2499 case 2:
2500 if (narg > 1)
2501 xsettitle(strescseq.args[1]);
2502 return;
2503 case 4: /* color set */
2504 if (narg < 3)
2505 break;
2506 p = strescseq.args[2];
2507 /* FALLTHROUGH */
2508 case 104: /* color reset, here p = NULL */
2509 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2510 if (xsetcolorname(j, p)) {
2511 fprintf(stderr, "erresc: invalid color %s\n", p);
2512 } else {
2513 /*
2514 * TODO if defaultbg color is changed, borders
2515 * are dirty
2516 */
2517 redraw();
2518 }
2519 return;
2520 }
2521 break;
2522 case 'k': /* old title set compatibility */
2523 xsettitle(strescseq.args[0]);
2524 return;
2525 case 'P': /* DCS -- Device Control String */
2526 case '_': /* APC -- Application Program Command */
2527 case '^': /* PM -- Privacy Message */
2528 return;
2529 }
2530
2531 fprintf(stderr, "erresc: unknown str ");
2532 strdump();
2533 }
2534
2535 void
2536 strparse(void)
2537 {
2538 int c;
2539 char *p = strescseq.buf;
2540
2541 strescseq.narg = 0;
2542 strescseq.buf[strescseq.len] = '\0';
2543
2544 if (*p == '\0')
2545 return;
2546
2547 while (strescseq.narg < STR_ARG_SIZ) {
2548 strescseq.args[strescseq.narg++] = p;
2549 while ((c = *p) != ';' && c != '\0')
2550 ++p;
2551 if (c == '\0')
2552 return;
2553 *p++ = '\0';
2554 }
2555 }
2556
2557 void
2558 strdump(void)
2559 {
2560 int i;
2561 uint c;
2562
2563 printf("ESC%c", strescseq.type);
2564 for (i = 0; i < strescseq.len; i++) {
2565 c = strescseq.buf[i] & 0xff;
2566 if (c == '\0') {
2567 return;
2568 } else if (isprint(c)) {
2569 putchar(c);
2570 } else if (c == '\n') {
2571 printf("(\\n)");
2572 } else if (c == '\r') {
2573 printf("(\\r)");
2574 } else if (c == 0x1b) {
2575 printf("(\\e)");
2576 } else {
2577 printf("(%02x)", c);
2578 }
2579 }
2580 printf("ESC\\\n");
2581 }
2582
2583 void
2584 strreset(void)
2585 {
2586 memset(&strescseq, 0, sizeof(strescseq));
2587 }
2588
2589 void
2590 sendbreak(const Arg *arg)
2591 {
2592 if (tcsendbreak(cmdfd, 0))
2593 perror("Error sending break");
2594 }
2595
2596 void
2597 tprinter(char *s, size_t len)
2598 {
2599 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
2600 fprintf(stderr, "Error writing in %s:%s\n",
2601 opt_io, strerror(errno));
2602 close(iofd);
2603 iofd = -1;
2604 }
2605 }
2606
2607 void
2608 toggleprinter(const Arg *arg)
2609 {
2610 term.mode ^= MODE_PRINT;
2611 }
2612
2613 void
2614 printscreen(const Arg *arg)
2615 {
2616 tdump();
2617 }
2618
2619 void
2620 printsel(const Arg *arg)
2621 {
2622 tdumpsel();
2623 }
2624
2625 void
2626 tdumpsel(void)
2627 {
2628 char *ptr;
2629
2630 if ((ptr = getsel())) {
2631 tprinter(ptr, strlen(ptr));
2632 free(ptr);
2633 }
2634 }
2635
2636 void
2637 tdumpline(int n)
2638 {
2639 char buf[UTF_SIZ];
2640 Glyph *bp, *end;
2641
2642 bp = &term.line[n][0];
2643 end = &bp[MIN(tlinelen(n), term.col) - 1];
2644 if (bp != end || bp->u != ' ') {
2645 for ( ;bp <= end; ++bp)
2646 tprinter(buf, utf8encode(bp->u, buf));
2647 }
2648 tprinter("\n", 1);
2649 }
2650
2651 void
2652 tdump(void)
2653 {
2654 int i;
2655
2656 for (i = 0; i < term.row; ++i)
2657 tdumpline(i);
2658 }
2659
2660 void
2661 tputtab(int n)
2662 {
2663 uint x = term.c.x;
2664
2665 if (n > 0) {
2666 while (x < term.col && n--)
2667 for (++x; x < term.col && !term.tabs[x]; ++x)
2668 /* nothing */ ;
2669 } else if (n < 0) {
2670 while (x > 0 && n++)
2671 for (--x; x > 0 && !term.tabs[x]; --x)
2672 /* nothing */ ;
2673 }
2674 term.c.x = LIMIT(x, 0, term.col-1);
2675 }
2676
2677 void
2678 techo(Rune u)
2679 {
2680 if (ISCONTROL(u)) { /* control code */
2681 if (u & 0x80) {
2682 u &= 0x7f;
2683 tputc('^');
2684 tputc('[');
2685 } else if (u != '\n' && u != '\r' && u != '\t') {
2686 u ^= 0x40;
2687 tputc('^');
2688 }
2689 }
2690 tputc(u);
2691 }
2692
2693 void
2694 tdeftran(char ascii)
2695 {
2696 static char cs[] = "0B";
2697 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2698 char *p;
2699
2700 if ((p = strchr(cs, ascii)) == NULL) {
2701 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2702 } else {
2703 term.trantbl[term.icharset] = vcs[p - cs];
2704 }
2705 }
2706
2707 void
2708 tdectest(char c)
2709 {
2710 int x, y;
2711
2712 if (c == '8') { /* DEC screen alignment test. */
2713 for (x = 0; x < term.col; ++x) {
2714 for (y = 0; y < term.row; ++y)
2715 tsetchar('E', &term.c.attr, x, y);
2716 }
2717 }
2718 }
2719
2720 void
2721 tstrsequence(uchar c)
2722 {
2723 switch (c) {
2724 case 0x90: /* DCS -- Device Control String */
2725 c = 'P';
2726 break;
2727 case 0x9f: /* APC -- Application Program Command */
2728 c = '_';
2729 break;
2730 case 0x9e: /* PM -- Privacy Message */
2731 c = '^';
2732 break;
2733 case 0x9d: /* OSC -- Operating System Command */
2734 c = ']';
2735 break;
2736 }
2737 strreset();
2738 strescseq.type = c;
2739 term.esc |= ESC_STR;
2740 }
2741
2742 void
2743 tcontrolcode(uchar ascii)
2744 {
2745 switch (ascii) {
2746 case '\t': /* HT */
2747 tputtab(1);
2748 return;
2749 case '\b': /* BS */
2750 tmoveto(term.c.x-1, term.c.y);
2751 return;
2752 case '\r': /* CR */
2753 tmoveto(0, term.c.y);
2754 return;
2755 case '\f': /* LF */
2756 case '\v': /* VT */
2757 case '\n': /* LF */
2758 /* go to first col if the mode is set */
2759 tnewline(IS_SET(MODE_CRLF));
2760 return;
2761 case '\a': /* BEL */
2762 if (term.esc & ESC_STR_END) {
2763 /* backwards compatibility to xterm */
2764 strhandle();
2765 } else {
2766 if (!(xw.state & WIN_FOCUSED))
2767 xseturgency(1);
2768 if (bellvolume)
2769 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2770 }
2771 break;
2772 case '\033': /* ESC */
2773 csireset();
2774 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2775 term.esc |= ESC_START;
2776 return;
2777 case '\016': /* SO (LS1 -- Locking shift 1) */
2778 case '\017': /* SI (LS0 -- Locking shift 0) */
2779 term.charset = 1 - (ascii - '\016');
2780 return;
2781 case '\032': /* SUB */
2782 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2783 case '\030': /* CAN */
2784 csireset();
2785 break;
2786 case '\005': /* ENQ (IGNORED) */
2787 case '\000': /* NUL (IGNORED) */
2788 case '\021': /* XON (IGNORED) */
2789 case '\023': /* XOFF (IGNORED) */
2790 case 0177: /* DEL (IGNORED) */
2791 return;
2792 case 0x80: /* TODO: PAD */
2793 case 0x81: /* TODO: HOP */
2794 case 0x82: /* TODO: BPH */
2795 case 0x83: /* TODO: NBH */
2796 case 0x84: /* TODO: IND */
2797 break;
2798 case 0x85: /* NEL -- Next line */
2799 tnewline(1); /* always go to first col */
2800 break;
2801 case 0x86: /* TODO: SSA */
2802 case 0x87: /* TODO: ESA */
2803 break;
2804 case 0x88: /* HTS -- Horizontal tab stop */
2805 term.tabs[term.c.x] = 1;
2806 break;
2807 case 0x89: /* TODO: HTJ */
2808 case 0x8a: /* TODO: VTS */
2809 case 0x8b: /* TODO: PLD */
2810 case 0x8c: /* TODO: PLU */
2811 case 0x8d: /* TODO: RI */
2812 case 0x8e: /* TODO: SS2 */
2813 case 0x8f: /* TODO: SS3 */
2814 case 0x91: /* TODO: PU1 */
2815 case 0x92: /* TODO: PU2 */
2816 case 0x93: /* TODO: STS */
2817 case 0x94: /* TODO: CCH */
2818 case 0x95: /* TODO: MW */
2819 case 0x96: /* TODO: SPA */
2820 case 0x97: /* TODO: EPA */
2821 case 0x98: /* TODO: SOS */
2822 case 0x99: /* TODO: SGCI */
2823 break;
2824 case 0x9a: /* DECID -- Identify Terminal */
2825 ttywrite(vtiden, sizeof(vtiden) - 1);
2826 break;
2827 case 0x9b: /* TODO: CSI */
2828 case 0x9c: /* TODO: ST */
2829 break;
2830 case 0x90: /* DCS -- Device Control String */
2831 case 0x9d: /* OSC -- Operating System Command */
2832 case 0x9e: /* PM -- Privacy Message */
2833 case 0x9f: /* APC -- Application Program Command */
2834 tstrsequence(ascii);
2835 return;
2836 }
2837 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2838 term.esc &= ~(ESC_STR_END|ESC_STR);
2839 }
2840
2841 /*
2842 * returns 1 when the sequence is finished and it hasn't to read
2843 * more characters for this sequence, otherwise 0
2844 */
2845 int
2846 eschandle(uchar ascii)
2847 {
2848 switch (ascii) {
2849 case '[':
2850 term.esc |= ESC_CSI;
2851 return 0;
2852 case '#':
2853 term.esc |= ESC_TEST;
2854 return 0;
2855 case 'P': /* DCS -- Device Control String */
2856 case '_': /* APC -- Application Program Command */
2857 case '^': /* PM -- Privacy Message */
2858 case ']': /* OSC -- Operating System Command */
2859 case 'k': /* old title set compatibility */
2860 tstrsequence(ascii);
2861 return 0;
2862 case 'n': /* LS2 -- Locking shift 2 */
2863 case 'o': /* LS3 -- Locking shift 3 */
2864 term.charset = 2 + (ascii - 'n');
2865 break;
2866 case '(': /* GZD4 -- set primary charset G0 */
2867 case ')': /* G1D4 -- set secondary charset G1 */
2868 case '*': /* G2D4 -- set tertiary charset G2 */
2869 case '+': /* G3D4 -- set quaternary charset G3 */
2870 term.icharset = ascii - '(';
2871 term.esc |= ESC_ALTCHARSET;
2872 return 0;
2873 case 'D': /* IND -- Linefeed */
2874 if (term.c.y == term.bot) {
2875 tscrollup(term.top, 1);
2876 } else {
2877 tmoveto(term.c.x, term.c.y+1);
2878 }
2879 break;
2880 case 'E': /* NEL -- Next line */
2881 tnewline(1); /* always go to first col */
2882 break;
2883 case 'H': /* HTS -- Horizontal tab stop */
2884 term.tabs[term.c.x] = 1;
2885 break;
2886 case 'M': /* RI -- Reverse index */
2887 if (term.c.y == term.top) {
2888 tscrolldown(term.top, 1);
2889 } else {
2890 tmoveto(term.c.x, term.c.y-1);
2891 }
2892 break;
2893 case 'Z': /* DECID -- Identify Terminal */
2894 ttywrite(vtiden, sizeof(vtiden) - 1);
2895 break;
2896 case 'c': /* RIS -- Reset to inital state */
2897 treset();
2898 xresettitle();
2899 xloadcols();
2900 break;
2901 case '=': /* DECPAM -- Application keypad */
2902 term.mode |= MODE_APPKEYPAD;
2903 break;
2904 case '>': /* DECPNM -- Normal keypad */
2905 term.mode &= ~MODE_APPKEYPAD;
2906 break;
2907 case '7': /* DECSC -- Save Cursor */
2908 tcursor(CURSOR_SAVE);
2909 break;
2910 case '8': /* DECRC -- Restore Cursor */
2911 tcursor(CURSOR_LOAD);
2912 break;
2913 case '\\': /* ST -- String Terminator */
2914 if (term.esc & ESC_STR_END)
2915 strhandle();
2916 break;
2917 default:
2918 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2919 (uchar) ascii, isprint(ascii)? ascii:'.');
2920 break;
2921 }
2922 return 1;
2923 }
2924
2925 void
2926 tputc(Rune u)
2927 {
2928 char c[UTF_SIZ];
2929 int control;
2930 int width, len;
2931 Glyph *gp;
2932
2933 control = ISCONTROL(u);
2934 len = utf8encode(u, c);
2935 if (!control && (width = wcwidth(u)) == -1) {
2936 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
2937 width = 1;
2938 }
2939
2940 if (IS_SET(MODE_PRINT))
2941 tprinter(c, len);
2942
2943 /*
2944 * STR sequence must be checked before anything else
2945 * because it uses all following characters until it
2946 * receives a ESC, a SUB, a ST or any other C1 control
2947 * character.
2948 */
2949 if (term.esc & ESC_STR) {
2950 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
2951 ISCONTROLC1(u)) {
2952 term.esc &= ~(ESC_START|ESC_STR);
2953 term.esc |= ESC_STR_END;
2954 } else if (strescseq.len + len < sizeof(strescseq.buf) - 1) {
2955 memmove(&strescseq.buf[strescseq.len], c, len);
2956 strescseq.len += len;
2957 return;
2958 } else {
2959 /*
2960 * Here is a bug in terminals. If the user never sends
2961 * some code to stop the str or esc command, then st
2962 * will stop responding. But this is better than
2963 * silently failing with unknown characters. At least
2964 * then users will report back.
2965 *
2966 * In the case users ever get fixed, here is the code:
2967 */
2968 /*
2969 * term.esc = 0;
2970 * strhandle();
2971 */
2972 return;
2973 }
2974 }
2975
2976 /*
2977 * Actions of control codes must be performed as soon they arrive
2978 * because they can be embedded inside a control sequence, and
2979 * they must not cause conflicts with sequences.
2980 */
2981 if (control) {
2982 tcontrolcode(u);
2983 /*
2984 * control codes are not shown ever
2985 */
2986 return;
2987 } else if (term.esc & ESC_START) {
2988 if (term.esc & ESC_CSI) {
2989 csiescseq.buf[csiescseq.len++] = u;
2990 if (BETWEEN(u, 0x40, 0x7E)
2991 || csiescseq.len >= \
2992 sizeof(csiescseq.buf)-1) {
2993 term.esc = 0;
2994 csiparse();
2995 csihandle();
2996 }
2997 return;
2998 } else if (term.esc & ESC_ALTCHARSET) {
2999 tdeftran(u);
3000 } else if (term.esc & ESC_TEST) {
3001 tdectest(u);
3002 } else {
3003 if (!eschandle(u))
3004 return;
3005 /* sequence already finished */
3006 }
3007 term.esc = 0;
3008 /*
3009 * All characters which form part of a sequence are not
3010 * printed
3011 */
3012 return;
3013 }
3014 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
3015 selclear(NULL);
3016
3017 gp = &term.line[term.c.y][term.c.x];
3018 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
3019 gp->mode |= ATTR_WRAP;
3020 tnewline(1);
3021 gp = &term.line[term.c.y][term.c.x];
3022 }
3023
3024 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
3025 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
3026
3027 if (term.c.x+width > term.col) {
3028 tnewline(1);
3029 gp = &term.line[term.c.y][term.c.x];
3030 }
3031
3032 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
3033
3034 if (width == 2) {
3035 gp->mode |= ATTR_WIDE;
3036 if (term.c.x+1 < term.col) {
3037 gp[1].u = '\0';
3038 gp[1].mode = ATTR_WDUMMY;
3039 }
3040 }
3041 if (term.c.x+width < term.col) {
3042 tmoveto(term.c.x+width, term.c.y);
3043 } else {
3044 term.c.state |= CURSOR_WRAPNEXT;
3045 }
3046 }
3047
3048 void
3049 tresize(int col, int row)
3050 {
3051 int i;
3052 int minrow = MIN(row, term.row);
3053 int mincol = MIN(col, term.col);
3054 int *bp;
3055 TCursor c;
3056
3057 if (col < 1 || row < 1) {
3058 fprintf(stderr,
3059 "tresize: error resizing to %dx%d\n", col, row);
3060 return;
3061 }
3062
3063 /*
3064 * slide screen to keep cursor where we expect it -
3065 * tscrollup would work here, but we can optimize to
3066 * memmove because we're freeing the earlier lines
3067 */
3068 for (i = 0; i <= term.c.y - row; i++) {
3069 free(term.line[i]);
3070 free(term.alt[i]);
3071 }
3072 /* ensure that both src and dst are not NULL */
3073 if (i > 0) {
3074 memmove(term.line, term.line + i, row * sizeof(Line));
3075 memmove(term.alt, term.alt + i, row * sizeof(Line));
3076 }
3077 for (i += row; i < term.row; i++) {
3078 free(term.line[i]);
3079 free(term.alt[i]);
3080 }
3081
3082 /* resize to new width */
3083 term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
3084
3085 /* resize to new height */
3086 term.line = xrealloc(term.line, row * sizeof(Line));
3087 term.alt = xrealloc(term.alt, row * sizeof(Line));
3088 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
3089 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
3090
3091 /* resize each row to new width, zero-pad if needed */
3092 for (i = 0; i < minrow; i++) {
3093 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
3094 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
3095 }
3096
3097 /* allocate any new rows */
3098 for (/* i == minrow */; i < row; i++) {
3099 term.line[i] = xmalloc(col * sizeof(Glyph));
3100 term.alt[i] = xmalloc(col * sizeof(Glyph));
3101 }
3102 if (col > term.col) {
3103 bp = term.tabs + term.col;
3104
3105 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
3106 while (--bp > term.tabs && !*bp)
3107 /* nothing */ ;
3108 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
3109 *bp = 1;
3110 }
3111 /* update terminal size */
3112 term.col = col;
3113 term.row = row;
3114 /* reset scrolling region */
3115 tsetscroll(0, row-1);
3116 /* make use of the LIMIT in tmoveto */
3117 tmoveto(term.c.x, term.c.y);
3118 /* Clearing both screens (it makes dirty all lines) */
3119 c = term.c;
3120 for (i = 0; i < 2; i++) {
3121 if (mincol < col && 0 < minrow) {
3122 tclearregion(mincol, 0, col - 1, minrow - 1);
3123 }
3124 if (0 < col && minrow < row) {
3125 tclearregion(0, minrow, col - 1, row - 1);
3126 }
3127 tswapscreen();
3128 tcursor(CURSOR_LOAD);
3129 }
3130 term.c = c;
3131 }
3132
3133 void
3134 xresize(int col, int row)
3135 {
3136 xw.tw = MAX(1, col * xw.cw);
3137 xw.th = MAX(1, row * xw.ch);
3138
3139 XFreePixmap(xw.dpy, xw.buf);
3140 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3141 DefaultDepth(xw.dpy, xw.scr));
3142 XftDrawChange(xw.draw, xw.buf);
3143 xclear(0, 0, xw.w, xw.h);
3144 }
3145
3146 ushort
3147 sixd_to_16bit(int x)
3148 {
3149 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
3150 }
3151
3152 int
3153 xloadcolor(int i, const char *name, Color *ncolor)
3154 {
3155 XRenderColor color = { .alpha = 0xffff };
3156
3157 if (!name) {
3158 if (BETWEEN(i, 16, 255)) { /* 256 color */
3159 if (i < 6*6*6+16) { /* same colors as xterm */
3160 color.red = sixd_to_16bit( ((i-16)/36)%6 );
3161 color.green = sixd_to_16bit( ((i-16)/6) %6 );
3162 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
3163 } else { /* greyscale */
3164 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
3165 color.green = color.blue = color.red;
3166 }
3167 return XftColorAllocValue(xw.dpy, xw.vis,
3168 xw.cmap, &color, ncolor);
3169 } else
3170 name = colorname[i];
3171 }
3172
3173 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
3174 }
3175
3176 void
3177 xloadcols(void)
3178 {
3179 int i;
3180 static int loaded;
3181 Color *cp;
3182
3183 if (loaded) {
3184 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
3185 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
3186 }
3187
3188 for (i = 0; i < LEN(dc.col); i++)
3189 if (!xloadcolor(i, NULL, &dc.col[i])) {
3190 if (colorname[i])
3191 die("Could not allocate color '%s'\n", colorname[i]);
3192 else
3193 die("Could not allocate color %d\n", i);
3194 }
3195 loaded = 1;
3196 }
3197
3198 int
3199 xsetcolorname(int x, const char *name)
3200 {
3201 Color ncolor;
3202
3203 if (!BETWEEN(x, 0, LEN(dc.col)))
3204 return 1;
3205
3206
3207 if (!xloadcolor(x, name, &ncolor))
3208 return 1;
3209
3210 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
3211 dc.col[x] = ncolor;
3212
3213 return 0;
3214 }
3215
3216 /*
3217 * Absolute coordinates.
3218 */
3219 void
3220 xclear(int x1, int y1, int x2, int y2)
3221 {
3222 XftDrawRect(xw.draw,
3223 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
3224 x1, y1, x2-x1, y2-y1);
3225 }
3226
3227 void
3228 xhints(void)
3229 {
3230 XClassHint class = {opt_name ? opt_name : termname,
3231 opt_class ? opt_class : termname};
3232 XWMHints wm = {.flags = InputHint, .input = 1};
3233 XSizeHints *sizeh = NULL;
3234
3235 sizeh = XAllocSizeHints();
3236
3237 sizeh->flags = PSize | PResizeInc | PBaseSize;
3238 sizeh->height = xw.h;
3239 sizeh->width = xw.w;
3240 sizeh->height_inc = xw.ch;
3241 sizeh->width_inc = xw.cw;
3242 sizeh->base_height = 2 * borderpx;
3243 sizeh->base_width = 2 * borderpx;
3244 if (xw.isfixed) {
3245 sizeh->flags |= PMaxSize | PMinSize;
3246 sizeh->min_width = sizeh->max_width = xw.w;
3247 sizeh->min_height = sizeh->max_height = xw.h;
3248 }
3249 if (xw.gm & (XValue|YValue)) {
3250 sizeh->flags |= USPosition | PWinGravity;
3251 sizeh->x = xw.l;
3252 sizeh->y = xw.t;
3253 sizeh->win_gravity = xgeommasktogravity(xw.gm);
3254 }
3255
3256 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
3257 &class);
3258 XFree(sizeh);
3259 }
3260
3261 int
3262 xgeommasktogravity(int mask)
3263 {
3264 switch (mask & (XNegative|YNegative)) {
3265 case 0:
3266 return NorthWestGravity;
3267 case XNegative:
3268 return NorthEastGravity;
3269 case YNegative:
3270 return SouthWestGravity;
3271 }
3272
3273 return SouthEastGravity;
3274 }
3275
3276 int
3277 xloadfont(Font *f, FcPattern *pattern)
3278 {
3279 FcPattern *match;
3280 FcResult result;
3281 XGlyphInfo extents;
3282
3283 match = FcFontMatch(NULL, pattern, &result);
3284 if (!match)
3285 return 1;
3286
3287 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3288 FcPatternDestroy(match);
3289 return 1;
3290 }
3291
3292 XftTextExtentsUtf8(xw.dpy, f->match,
3293 (const FcChar8 *) ascii_printable,
3294 strlen(ascii_printable), &extents);
3295
3296 f->set = NULL;
3297 f->pattern = FcPatternDuplicate(pattern);
3298
3299 f->ascent = f->match->ascent;
3300 f->descent = f->match->descent;
3301 f->lbearing = 0;
3302 f->rbearing = f->match->max_advance_width;
3303
3304 f->height = f->ascent + f->descent;
3305 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
3306
3307 return 0;
3308 }
3309
3310 void
3311 xloadfonts(char *fontstr, double fontsize)
3312 {
3313 FcPattern *pattern;
3314 double fontval;
3315 float ceilf(float);
3316
3317 if (fontstr[0] == '-') {
3318 pattern = XftXlfdParse(fontstr, False, False);
3319 } else {
3320 pattern = FcNameParse((FcChar8 *)fontstr);
3321 }
3322
3323 if (!pattern)
3324 die("st: can't open font %s\n", fontstr);
3325
3326 if (fontsize > 1) {
3327 FcPatternDel(pattern, FC_PIXEL_SIZE);
3328 FcPatternDel(pattern, FC_SIZE);
3329 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3330 usedfontsize = fontsize;
3331 } else {
3332 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
3333 FcResultMatch) {
3334 usedfontsize = fontval;
3335 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
3336 FcResultMatch) {
3337 usedfontsize = -1;
3338 } else {
3339 /*
3340 * Default font size is 12, if none given. This is to
3341 * have a known usedfontsize value.
3342 */
3343 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3344 usedfontsize = 12;
3345 }
3346 defaultfontsize = usedfontsize;
3347 }
3348
3349 FcConfigSubstitute(0, pattern, FcMatchPattern);
3350 FcDefaultSubstitute(pattern);
3351
3352 if (xloadfont(&dc.font, pattern))
3353 die("st: can't open font %s\n", fontstr);
3354
3355 if (usedfontsize < 0) {
3356 FcPatternGetDouble(dc.font.match->pattern,
3357 FC_PIXEL_SIZE, 0, &fontval);
3358 usedfontsize = fontval;
3359 if (fontsize == 0)
3360 defaultfontsize = fontval;
3361 }
3362
3363 /* Setting character width and height. */
3364 xw.cw = ceilf(dc.font.width * cwscale);
3365 xw.ch = ceilf(dc.font.height * chscale);
3366
3367 FcPatternDel(pattern, FC_SLANT);
3368 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3369 if (xloadfont(&dc.ifont, pattern))
3370 die("st: can't open font %s\n", fontstr);
3371
3372 FcPatternDel(pattern, FC_WEIGHT);
3373 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3374 if (xloadfont(&dc.ibfont, pattern))
3375 die("st: can't open font %s\n", fontstr);
3376
3377 FcPatternDel(pattern, FC_SLANT);
3378 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3379 if (xloadfont(&dc.bfont, pattern))
3380 die("st: can't open font %s\n", fontstr);
3381
3382 FcPatternDestroy(pattern);
3383 }
3384
3385 void
3386 xunloadfont(Font *f)
3387 {
3388 XftFontClose(xw.dpy, f->match);
3389 FcPatternDestroy(f->pattern);
3390 if (f->set)
3391 FcFontSetDestroy(f->set);
3392 }
3393
3394 void
3395 xunloadfonts(void)
3396 {
3397 /* Free the loaded fonts in the font cache. */
3398 while (frclen > 0)
3399 XftFontClose(xw.dpy, frc[--frclen].font);
3400
3401 xunloadfont(&dc.font);
3402 xunloadfont(&dc.bfont);
3403 xunloadfont(&dc.ifont);
3404 xunloadfont(&dc.ibfont);
3405 }
3406
3407 void
3408 xzoom(const Arg *arg)
3409 {
3410 Arg larg;
3411
3412 larg.f = usedfontsize + arg->f;
3413 xzoomabs(&larg);
3414 }
3415
3416 void
3417 xzoomabs(const Arg *arg)
3418 {
3419 xunloadfonts();
3420 xloadfonts(usedfont, arg->f);
3421 cresize(0, 0);
3422 ttyresize();
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 += DisplayHeight(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)yp;
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 if (ena_sel && selected(term.c.x, term.c.y)) {
3869 drawcol = dc.col[defaultrcs];
3870 g.fg = defaultfg;
3871 g.bg = defaultrcs;
3872 } else {
3873 drawcol = dc.col[defaultcs];
3874 }
3875 }
3876
3877 if (IS_SET(MODE_HIDE))
3878 return;
3879
3880 /* draw the new one */
3881 if (xw.state & WIN_FOCUSED) {
3882 switch (xw.cursor) {
3883 case 7: /* st extension: snowman */
3884 utf8decode("☃", &g.u, UTF_SIZ);
3885 case 0: /* Blinking Block */
3886 case 1: /* Blinking Block (Default) */
3887 case 2: /* Steady Block */
3888 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
3889 xdrawglyph(g, term.c.x, term.c.y);
3890 break;
3891 case 3: /* Blinking Underline */
3892 case 4: /* Steady Underline */
3893 XftDrawRect(xw.draw, &drawcol,
3894 borderpx + curx * xw.cw,
3895 borderpx + (term.c.y + 1) * xw.ch - \
3896 cursorthickness,
3897 xw.cw, cursorthickness);
3898 break;
3899 case 5: /* Blinking bar */
3900 case 6: /* Steady bar */
3901 XftDrawRect(xw.draw, &drawcol,
3902 borderpx + curx * xw.cw,
3903 borderpx + term.c.y * xw.ch,
3904 cursorthickness, xw.ch);
3905 break;
3906 }
3907 } else {
3908 XftDrawRect(xw.draw, &drawcol,
3909 borderpx + curx * xw.cw,
3910 borderpx + term.c.y * xw.ch,
3911 xw.cw - 1, 1);
3912 XftDrawRect(xw.draw, &drawcol,
3913 borderpx + curx * xw.cw,
3914 borderpx + term.c.y * xw.ch,
3915 1, xw.ch - 1);
3916 XftDrawRect(xw.draw, &drawcol,
3917 borderpx + (curx + 1) * xw.cw - 1,
3918 borderpx + term.c.y * xw.ch,
3919 1, xw.ch - 1);
3920 XftDrawRect(xw.draw, &drawcol,
3921 borderpx + curx * xw.cw,
3922 borderpx + (term.c.y + 1) * xw.ch - 1,
3923 xw.cw, 1);
3924 }
3925 oldx = curx, oldy = term.c.y;
3926 }
3927
3928
3929 void
3930 xsettitle(char *p)
3931 {
3932 XTextProperty prop;
3933
3934 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3935 &prop);
3936 XSetWMName(xw.dpy, xw.win, &prop);
3937 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3938 XFree(prop.value);
3939 }
3940
3941 void
3942 xresettitle(void)
3943 {
3944 xsettitle(opt_title ? opt_title : "st");
3945 }
3946
3947 void
3948 redraw(void)
3949 {
3950 tfulldirt();
3951 draw();
3952 }
3953
3954 void
3955 draw(void)
3956 {
3957 drawregion(0, 0, term.col, term.row);
3958 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3959 xw.h, 0, 0);
3960 XSetForeground(xw.dpy, dc.gc,
3961 dc.col[IS_SET(MODE_REVERSE)?
3962 defaultfg : defaultbg].pixel);
3963 }
3964
3965 void
3966 drawregion(int x1, int y1, int x2, int y2)
3967 {
3968 int i, x, y, ox, numspecs;
3969 Glyph base, new;
3970 XftGlyphFontSpec *specs;
3971 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3972
3973 if (!(xw.state & WIN_VISIBLE))
3974 return;
3975
3976 for (y = y1; y < y2; y++) {
3977 if (!term.dirty[y])
3978 continue;
3979
3980 term.dirty[y] = 0;
3981
3982 specs = term.specbuf;
3983 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
3984
3985 i = ox = 0;
3986 for (x = x1; x < x2 && i < numspecs; x++) {
3987 new = term.line[y][x];
3988 if (new.mode == ATTR_WDUMMY)
3989 continue;
3990 if (ena_sel && selected(x, y))
3991 new.mode ^= ATTR_REVERSE;
3992 if (i > 0 && ATTRCMP(base, new)) {
3993 xdrawglyphfontspecs(specs, base, i, ox, y);
3994 specs += i;
3995 numspecs -= i;
3996 i = 0;
3997 }
3998 if (i == 0) {
3999 ox = x;
4000 base = new;
4001 }
4002 i++;
4003 }
4004 if (i > 0)
4005 xdrawglyphfontspecs(specs, base, i, ox, y);
4006 }
4007 xdrawcursor();
4008 }
4009
4010 void
4011 expose(XEvent *ev)
4012 {
4013 redraw();
4014 }
4015
4016 void
4017 visibility(XEvent *ev)
4018 {
4019 XVisibilityEvent *e = &ev->xvisibility;
4020
4021 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
4022 }
4023
4024 void
4025 unmap(XEvent *ev)
4026 {
4027 xw.state &= ~WIN_VISIBLE;
4028 }
4029
4030 void
4031 xsetpointermotion(int set)
4032 {
4033 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
4034 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
4035 }
4036
4037 void
4038 xseturgency(int add)
4039 {
4040 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
4041
4042 MODBIT(h->flags, add, XUrgencyHint);
4043 XSetWMHints(xw.dpy, xw.win, h);
4044 XFree(h);
4045 }
4046
4047 void
4048 focus(XEvent *ev)
4049 {
4050 XFocusChangeEvent *e = &ev->xfocus;
4051
4052 if (e->mode == NotifyGrab)
4053 return;
4054
4055 if (ev->type == FocusIn) {
4056 XSetICFocus(xw.xic);
4057 xw.state |= WIN_FOCUSED;
4058 xseturgency(0);
4059 if (IS_SET(MODE_FOCUS))
4060 ttywrite("\033[I", 3);
4061 } else {
4062 XUnsetICFocus(xw.xic);
4063 xw.state &= ~WIN_FOCUSED;
4064 if (IS_SET(MODE_FOCUS))
4065 ttywrite("\033[O", 3);
4066 }
4067 }
4068
4069 int
4070 match(uint mask, uint state)
4071 {
4072 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
4073 }
4074
4075 void
4076 numlock(const Arg *dummy)
4077 {
4078 term.numlock ^= 1;
4079 }
4080
4081 char*
4082 kmap(KeySym k, uint state)
4083 {
4084 Key *kp;
4085 int i;
4086
4087 /* Check for mapped keys out of X11 function keys. */
4088 for (i = 0; i < LEN(mappedkeys); i++) {
4089 if (mappedkeys[i] == k)
4090 break;
4091 }
4092 if (i == LEN(mappedkeys)) {
4093 if ((k & 0xFFFF) < 0xFD00)
4094 return NULL;
4095 }
4096
4097 for (kp = key; kp < key + LEN(key); kp++) {
4098 if (kp->k != k)
4099 continue;
4100
4101 if (!match(kp->mask, state))
4102 continue;
4103
4104 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
4105 continue;
4106 if (term.numlock && kp->appkey == 2)
4107 continue;
4108
4109 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
4110 continue;
4111
4112 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
4113 continue;
4114
4115 return kp->s;
4116 }
4117
4118 return NULL;
4119 }
4120
4121 void
4122 kpress(XEvent *ev)
4123 {
4124 XKeyEvent *e = &ev->xkey;
4125 KeySym ksym;
4126 char buf[32], *customkey;
4127 int len;
4128 Rune c;
4129 Status status;
4130 Shortcut *bp;
4131
4132 if (IS_SET(MODE_KBDLOCK))
4133 return;
4134
4135 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
4136 /* 1. shortcuts */
4137 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
4138 if (ksym == bp->keysym && match(bp->mod, e->state)) {
4139 bp->func(&(bp->arg));
4140 return;
4141 }
4142 }
4143
4144 /* 2. custom keys from config.h */
4145 if ((customkey = kmap(ksym, e->state))) {
4146 ttysend(customkey, strlen(customkey));
4147 return;
4148 }
4149
4150 /* 3. composed string from input method */
4151 if (len == 0)
4152 return;
4153 if (len == 1 && e->state & Mod1Mask) {
4154 if (IS_SET(MODE_8BIT)) {
4155 if (*buf < 0177) {
4156 c = *buf | 0x80;
4157 len = utf8encode(c, buf);
4158 }
4159 } else {
4160 buf[1] = buf[0];
4161 buf[0] = '\033';
4162 len = 2;
4163 }
4164 }
4165 ttysend(buf, len);
4166 }
4167
4168
4169 void
4170 cmessage(XEvent *e)
4171 {
4172 /*
4173 * See xembed specs
4174 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
4175 */
4176 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
4177 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
4178 xw.state |= WIN_FOCUSED;
4179 xseturgency(0);
4180 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
4181 xw.state &= ~WIN_FOCUSED;
4182 }
4183 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
4184 /* Send SIGHUP to shell */
4185 kill(pid, SIGHUP);
4186 exit(0);
4187 }
4188 }
4189
4190 void
4191 cresize(int width, int height)
4192 {
4193 int col, row;
4194
4195 if (width != 0)
4196 xw.w = width;
4197 if (height != 0)
4198 xw.h = height;
4199
4200 col = (xw.w - 2 * borderpx) / xw.cw;
4201 row = (xw.h - 2 * borderpx) / xw.ch;
4202
4203 tresize(col, row);
4204 xresize(col, row);
4205 }
4206
4207 void
4208 resize(XEvent *e)
4209 {
4210 if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
4211 return;
4212
4213 cresize(e->xconfigure.width, e->xconfigure.height);
4214 ttyresize();
4215 }
4216
4217 void
4218 run(void)
4219 {
4220 XEvent ev;
4221 int w = xw.w, h = xw.h;
4222 fd_set rfd;
4223 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
4224 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
4225 long deltatime;
4226
4227 /* Waiting for window mapping */
4228 do {
4229 XNextEvent(xw.dpy, &ev);
4230 /*
4231 * This XFilterEvent call is required because of XOpenIM. It
4232 * does filter out the key event and some client message for
4233 * the input method too.
4234 */
4235 if (XFilterEvent(&ev, None))
4236 continue;
4237 if (ev.type == ConfigureNotify) {
4238 w = ev.xconfigure.width;
4239 h = ev.xconfigure.height;
4240 }
4241 } while (ev.type != MapNotify);
4242
4243 cresize(w, h);
4244 ttynew();
4245 ttyresize();
4246
4247 clock_gettime(CLOCK_MONOTONIC, &last);
4248 lastblink = last;
4249
4250 for (xev = actionfps;;) {
4251 FD_ZERO(&rfd);
4252 FD_SET(cmdfd, &rfd);
4253 FD_SET(xfd, &rfd);
4254
4255 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
4256 if (errno == EINTR)
4257 continue;
4258 die("select failed: %s\n", strerror(errno));
4259 }
4260 if (FD_ISSET(cmdfd, &rfd)) {
4261 ttyread();
4262 if (blinktimeout) {
4263 blinkset = tattrset(ATTR_BLINK);
4264 if (!blinkset)
4265 MODBIT(term.mode, 0, MODE_BLINK);
4266 }
4267 }
4268
4269 if (FD_ISSET(xfd, &rfd))
4270 xev = actionfps;
4271
4272 clock_gettime(CLOCK_MONOTONIC, &now);
4273 drawtimeout.tv_sec = 0;
4274 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
4275 tv = &drawtimeout;
4276
4277 dodraw = 0;
4278 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
4279 tsetdirtattr(ATTR_BLINK);
4280 term.mode ^= MODE_BLINK;
4281 lastblink = now;
4282 dodraw = 1;
4283 }
4284 deltatime = TIMEDIFF(now, last);
4285 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
4286 dodraw = 1;
4287 last = now;
4288 }
4289
4290 if (dodraw) {
4291 while (XPending(xw.dpy)) {
4292 XNextEvent(xw.dpy, &ev);
4293 if (XFilterEvent(&ev, None))
4294 continue;
4295 if (handler[ev.type])
4296 (handler[ev.type])(&ev);
4297 }
4298
4299 draw();
4300 XFlush(xw.dpy);
4301
4302 if (xev && !FD_ISSET(xfd, &rfd))
4303 xev--;
4304 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
4305 if (blinkset) {
4306 if (TIMEDIFF(now, lastblink) \
4307 > blinktimeout) {
4308 drawtimeout.tv_nsec = 1000;
4309 } else {
4310 drawtimeout.tv_nsec = (1E6 * \
4311 (blinktimeout - \
4312 TIMEDIFF(now,
4313 lastblink)));
4314 }
4315 drawtimeout.tv_sec = \
4316 drawtimeout.tv_nsec / 1E9;
4317 drawtimeout.tv_nsec %= (long)1E9;
4318 } else {
4319 tv = NULL;
4320 }
4321 }
4322 }
4323 }
4324 }
4325
4326 void
4327 usage(void)
4328 {
4329 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
4330 " [-n name] [-o file]\n"
4331 " [-T title] [-t title] [-w windowid]"
4332 " [[-e] command [args ...]]\n"
4333 " %s [-aiv] [-c class] [-f font] [-g geometry]"
4334 " [-n name] [-o file]\n"
4335 " [-T title] [-t title] [-w windowid] -l line"
4336 " [stty_args ...]\n", argv0, argv0);
4337 }
4338
4339 int
4340 main(int argc, char *argv[])
4341 {
4342 uint cols = 80, rows = 24;
4343
4344 xw.l = xw.t = 0;
4345 xw.isfixed = False;
4346 xw.cursor = cursorshape;
4347
4348 ARGBEGIN {
4349 case 'a':
4350 allowaltscreen = 0;
4351 break;
4352 case 'c':
4353 opt_class = EARGF(usage());
4354 break;
4355 case 'e':
4356 if (argc > 0)
4357 --argc, ++argv;
4358 goto run;
4359 case 'f':
4360 opt_font = EARGF(usage());
4361 break;
4362 case 'g':
4363 xw.gm = XParseGeometry(EARGF(usage()),
4364 &xw.l, &xw.t, &cols, &rows);
4365 break;
4366 case 'i':
4367 xw.isfixed = 1;
4368 break;
4369 case 'o':
4370 opt_io = EARGF(usage());
4371 break;
4372 case 'l':
4373 opt_line = EARGF(usage());
4374 break;
4375 case 'n':
4376 opt_name = EARGF(usage());
4377 break;
4378 case 't':
4379 case 'T':
4380 opt_title = EARGF(usage());
4381 break;
4382 case 'w':
4383 opt_embed = EARGF(usage());
4384 break;
4385 case 'v':
4386 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
4387 break;
4388 default:
4389 usage();
4390 } ARGEND;
4391
4392 run:
4393 if (argc > 0) {
4394 /* eat all remaining arguments */
4395 opt_cmd = argv;
4396 if (!opt_title && !opt_line)
4397 opt_title = basename(xstrdup(argv[0]));
4398 }
4399 setlocale(LC_CTYPE, "");
4400 XSetLocaleModifiers("");
4401 tnew(MAX(cols, 1), MAX(rows, 1));
4402 xinit();
4403 selinit();
4404 run();
4405
4406 return 0;
4407 }
4408