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Add -n option for setting WM_CLASS instance name
[st.git] / st.c
1 /* See LICENSE for license details. */
2 #include <ctype.h>
3 #include <errno.h>
4 #include <fcntl.h>
5 #include <limits.h>
6 #include <locale.h>
7 #include <pwd.h>
8 #include <stdarg.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <signal.h>
13 #include <stdint.h>
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
16 #include <sys/stat.h>
17 #include <sys/time.h>
18 #include <sys/types.h>
19 #include <sys/wait.h>
20 #include <termios.h>
21 #include <time.h>
22 #include <unistd.h>
23 #include <libgen.h>
24 #include <X11/Xatom.h>
25 #include <X11/Xlib.h>
26 #include <X11/Xutil.h>
27 #include <X11/cursorfont.h>
28 #include <X11/keysym.h>
29 #include <X11/Xft/Xft.h>
30 #include <X11/XKBlib.h>
31 #include <fontconfig/fontconfig.h>
32 #include <wchar.h>
33
34 #include "arg.h"
35
36 char *argv0;
37
38 #define Glyph Glyph_
39 #define Font Font_
40
41 #if defined(__linux)
42 #include <pty.h>
43 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
44 #include <util.h>
45 #elif defined(__FreeBSD__) || defined(__DragonFly__)
46 #include <libutil.h>
47 #endif
48
49
50 /* XEMBED messages */
51 #define XEMBED_FOCUS_IN 4
52 #define XEMBED_FOCUS_OUT 5
53
54 /* Arbitrary sizes */
55 #define UTF_INVALID 0xFFFD
56 #define UTF_SIZ 4
57 #define ESC_BUF_SIZ (128*UTF_SIZ)
58 #define ESC_ARG_SIZ 16
59 #define STR_BUF_SIZ ESC_BUF_SIZ
60 #define STR_ARG_SIZ ESC_ARG_SIZ
61 #define XK_ANY_MOD UINT_MAX
62 #define XK_NO_MOD 0
63 #define XK_SWITCH_MOD (1<<13)
64
65 /* macros */
66 #define MIN(a, b) ((a) < (b) ? (a) : (b))
67 #define MAX(a, b) ((a) < (b) ? (b) : (a))
68 #define LEN(a) (sizeof(a) / sizeof(a)[0])
69 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
70 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
71 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
72 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
73 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
74 #define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL)
75 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
76 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
77 (a).bg != (b).bg)
78 #define IS_SET(flag) ((term.mode & (flag)) != 0)
79 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
80 (t1.tv_nsec-t2.tv_nsec)/1E6)
81 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
82
83 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
84 #define IS_TRUECOL(x) (1 << 24 & (x))
85 #define TRUERED(x) (((x) & 0xff0000) >> 8)
86 #define TRUEGREEN(x) (((x) & 0xff00))
87 #define TRUEBLUE(x) (((x) & 0xff) << 8)
88
89
90 enum glyph_attribute {
91 ATTR_NULL = 0,
92 ATTR_BOLD = 1 << 0,
93 ATTR_FAINT = 1 << 1,
94 ATTR_ITALIC = 1 << 2,
95 ATTR_UNDERLINE = 1 << 3,
96 ATTR_BLINK = 1 << 4,
97 ATTR_REVERSE = 1 << 5,
98 ATTR_INVISIBLE = 1 << 6,
99 ATTR_STRUCK = 1 << 7,
100 ATTR_WRAP = 1 << 8,
101 ATTR_WIDE = 1 << 9,
102 ATTR_WDUMMY = 1 << 10,
103 ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
104 };
105
106 enum cursor_movement {
107 CURSOR_SAVE,
108 CURSOR_LOAD
109 };
110
111 enum cursor_state {
112 CURSOR_DEFAULT = 0,
113 CURSOR_WRAPNEXT = 1,
114 CURSOR_ORIGIN = 2
115 };
116
117 enum term_mode {
118 MODE_WRAP = 1 << 0,
119 MODE_INSERT = 1 << 1,
120 MODE_APPKEYPAD = 1 << 2,
121 MODE_ALTSCREEN = 1 << 3,
122 MODE_CRLF = 1 << 4,
123 MODE_MOUSEBTN = 1 << 5,
124 MODE_MOUSEMOTION = 1 << 6,
125 MODE_REVERSE = 1 << 7,
126 MODE_KBDLOCK = 1 << 8,
127 MODE_HIDE = 1 << 9,
128 MODE_ECHO = 1 << 10,
129 MODE_APPCURSOR = 1 << 11,
130 MODE_MOUSESGR = 1 << 12,
131 MODE_8BIT = 1 << 13,
132 MODE_BLINK = 1 << 14,
133 MODE_FBLINK = 1 << 15,
134 MODE_FOCUS = 1 << 16,
135 MODE_MOUSEX10 = 1 << 17,
136 MODE_MOUSEMANY = 1 << 18,
137 MODE_BRCKTPASTE = 1 << 19,
138 MODE_PRINT = 1 << 20,
139 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
140 |MODE_MOUSEMANY,
141 };
142
143 enum charset {
144 CS_GRAPHIC0,
145 CS_GRAPHIC1,
146 CS_UK,
147 CS_USA,
148 CS_MULTI,
149 CS_GER,
150 CS_FIN
151 };
152
153 enum escape_state {
154 ESC_START = 1,
155 ESC_CSI = 2,
156 ESC_STR = 4, /* DCS, OSC, PM, APC */
157 ESC_ALTCHARSET = 8,
158 ESC_STR_END = 16, /* a final string was encountered */
159 ESC_TEST = 32, /* Enter in test mode */
160 };
161
162 enum window_state {
163 WIN_VISIBLE = 1,
164 WIN_FOCUSED = 2
165 };
166
167 enum selection_mode {
168 SEL_IDLE = 0,
169 SEL_EMPTY = 1,
170 SEL_READY = 2
171 };
172
173 enum selection_type {
174 SEL_REGULAR = 1,
175 SEL_RECTANGULAR = 2
176 };
177
178 enum selection_snap {
179 SNAP_WORD = 1,
180 SNAP_LINE = 2
181 };
182
183 typedef unsigned char uchar;
184 typedef unsigned int uint;
185 typedef unsigned long ulong;
186 typedef unsigned short ushort;
187
188 typedef uint_least32_t Rune;
189
190 typedef XftDraw *Draw;
191 typedef XftColor Color;
192
193 typedef struct {
194 Rune u; /* character code */
195 ushort mode; /* attribute flags */
196 uint32_t fg; /* foreground */
197 uint32_t bg; /* background */
198 } Glyph;
199
200 typedef Glyph *Line;
201
202 typedef struct {
203 Glyph attr; /* current char attributes */
204 int x;
205 int y;
206 char state;
207 } TCursor;
208
209 /* CSI Escape sequence structs */
210 /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
211 typedef struct {
212 char buf[ESC_BUF_SIZ]; /* raw string */
213 int len; /* raw string length */
214 char priv;
215 int arg[ESC_ARG_SIZ];
216 int narg; /* nb of args */
217 char mode[2];
218 } CSIEscape;
219
220 /* STR Escape sequence structs */
221 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
222 typedef struct {
223 char type; /* ESC type ... */
224 char buf[STR_BUF_SIZ]; /* raw string */
225 int len; /* raw string length */
226 char *args[STR_ARG_SIZ];
227 int narg; /* nb of args */
228 } STREscape;
229
230 /* Internal representation of the screen */
231 typedef struct {
232 int row; /* nb row */
233 int col; /* nb col */
234 Line *line; /* screen */
235 Line *alt; /* alternate screen */
236 int *dirty; /* dirtyness of lines */
237 XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
238 TCursor c; /* cursor */
239 int top; /* top scroll limit */
240 int bot; /* bottom scroll limit */
241 int mode; /* terminal mode flags */
242 int esc; /* escape state flags */
243 char trantbl[4]; /* charset table translation */
244 int charset; /* current charset */
245 int icharset; /* selected charset for sequence */
246 int numlock; /* lock numbers in keyboard */
247 int *tabs;
248 } Term;
249
250 /* Purely graphic info */
251 typedef struct {
252 Display *dpy;
253 Colormap cmap;
254 Window win;
255 Drawable buf;
256 Atom xembed, wmdeletewin, netwmname, netwmpid;
257 XIM xim;
258 XIC xic;
259 Draw draw;
260 Visual *vis;
261 XSetWindowAttributes attrs;
262 int scr;
263 int isfixed; /* is fixed geometry? */
264 int l, t; /* left and top offset */
265 int gm; /* geometry mask */
266 int tw, th; /* tty width and height */
267 int w, h; /* window width and height */
268 int ch; /* char height */
269 int cw; /* char width */
270 char state; /* focus, redraw, visible */
271 int cursor; /* cursor style */
272 } XWindow;
273
274 typedef struct {
275 uint b;
276 uint mask;
277 char *s;
278 } MouseShortcut;
279
280 typedef struct {
281 KeySym k;
282 uint mask;
283 char *s;
284 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
285 signed char appkey; /* application keypad */
286 signed char appcursor; /* application cursor */
287 signed char crlf; /* crlf mode */
288 } Key;
289
290 typedef struct {
291 int mode;
292 int type;
293 int snap;
294 /*
295 * Selection variables:
296 * nb – normalized coordinates of the beginning of the selection
297 * ne – normalized coordinates of the end of the selection
298 * ob – original coordinates of the beginning of the selection
299 * oe – original coordinates of the end of the selection
300 */
301 struct {
302 int x, y;
303 } nb, ne, ob, oe;
304
305 char *primary, *clipboard;
306 Atom xtarget;
307 int alt;
308 struct timespec tclick1;
309 struct timespec tclick2;
310 } Selection;
311
312 typedef union {
313 int i;
314 uint ui;
315 float f;
316 const void *v;
317 } Arg;
318
319 typedef struct {
320 uint mod;
321 KeySym keysym;
322 void (*func)(const Arg *);
323 const Arg arg;
324 } Shortcut;
325
326 /* function definitions used in config.h */
327 static void clipcopy(const Arg *);
328 static void clippaste(const Arg *);
329 static void numlock(const Arg *);
330 static void selpaste(const Arg *);
331 static void xzoom(const Arg *);
332 static void xzoomabs(const Arg *);
333 static void xzoomreset(const Arg *);
334 static void printsel(const Arg *);
335 static void printscreen(const Arg *) ;
336 static void toggleprinter(const Arg *);
337 static void sendbreak(const Arg *);
338
339 /* Config.h for applying patches and the configuration. */
340 #include "config.h"
341
342 /* Font structure */
343 typedef struct {
344 int height;
345 int width;
346 int ascent;
347 int descent;
348 short lbearing;
349 short rbearing;
350 XftFont *match;
351 FcFontSet *set;
352 FcPattern *pattern;
353 } Font;
354
355 /* Drawing Context */
356 typedef struct {
357 Color col[MAX(LEN(colorname), 256)];
358 Font font, bfont, ifont, ibfont;
359 GC gc;
360 } DC;
361
362 static void die(const char *, ...);
363 static void draw(void);
364 static void redraw(void);
365 static void drawregion(int, int, int, int);
366 static void execsh(void);
367 static void stty(void);
368 static void sigchld(int);
369 static void run(void);
370
371 static void csidump(void);
372 static void csihandle(void);
373 static void csiparse(void);
374 static void csireset(void);
375 static int eschandle(uchar);
376 static void strdump(void);
377 static void strhandle(void);
378 static void strparse(void);
379 static void strreset(void);
380
381 static int tattrset(int);
382 static void tprinter(char *, size_t);
383 static void tdumpsel(void);
384 static void tdumpline(int);
385 static void tdump(void);
386 static void tclearregion(int, int, int, int);
387 static void tcursor(int);
388 static void tdeletechar(int);
389 static void tdeleteline(int);
390 static void tinsertblank(int);
391 static void tinsertblankline(int);
392 static int tlinelen(int);
393 static void tmoveto(int, int);
394 static void tmoveato(int, int);
395 static void tnew(int, int);
396 static void tnewline(int);
397 static void tputtab(int);
398 static void tputc(Rune);
399 static void treset(void);
400 static void tresize(int, int);
401 static void tscrollup(int, int);
402 static void tscrolldown(int, int);
403 static void tsetattr(int *, int);
404 static void tsetchar(Rune, Glyph *, int, int);
405 static void tsetscroll(int, int);
406 static void tswapscreen(void);
407 static void tsetdirt(int, int);
408 static void tsetdirtattr(int);
409 static void tsetmode(int, int, int *, int);
410 static void tfulldirt(void);
411 static void techo(Rune);
412 static void tcontrolcode(uchar );
413 static void tdectest(char );
414 static int32_t tdefcolor(int *, int *, int);
415 static void tdeftran(char);
416 static inline int match(uint, uint);
417 static void ttynew(void);
418 static size_t ttyread(void);
419 static void ttyresize(void);
420 static void ttysend(char *, size_t);
421 static void ttywrite(const char *, size_t);
422 static void tstrsequence(uchar);
423
424 static inline ushort sixd_to_16bit(int);
425 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
426 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
427 static void xdrawglyph(Glyph, int, int);
428 static void xhints(void);
429 static void xclear(int, int, int, int);
430 static void xdrawcursor(void);
431 static void xinit(void);
432 static void xloadcols(void);
433 static int xsetcolorname(int, const char *);
434 static int xgeommasktogravity(int);
435 static int xloadfont(Font *, FcPattern *);
436 static void xloadfonts(char *, double);
437 static void xsettitle(char *);
438 static void xresettitle(void);
439 static void xsetpointermotion(int);
440 static void xseturgency(int);
441 static void xsetsel(char *, Time);
442 static void xtermclear(int, int, int, int);
443 static void xunloadfont(Font *);
444 static void xunloadfonts(void);
445 static void xresize(int, int);
446
447 static void expose(XEvent *);
448 static void visibility(XEvent *);
449 static void unmap(XEvent *);
450 static char *kmap(KeySym, uint);
451 static void kpress(XEvent *);
452 static void cmessage(XEvent *);
453 static void cresize(int, int);
454 static void resize(XEvent *);
455 static void focus(XEvent *);
456 static void brelease(XEvent *);
457 static void bpress(XEvent *);
458 static void bmotion(XEvent *);
459 static void propnotify(XEvent *);
460 static void selnotify(XEvent *);
461 static void selclear(XEvent *);
462 static void selrequest(XEvent *);
463
464 static void selinit(void);
465 static void selnormalize(void);
466 static inline int selected(int, int);
467 static char *getsel(void);
468 static void selcopy(Time);
469 static void selscroll(int, int);
470 static void selsnap(int *, int *, int);
471 static int x2col(int);
472 static int y2row(int);
473 static void getbuttoninfo(XEvent *);
474 static void mousereport(XEvent *);
475
476 static size_t utf8decode(char *, Rune *, size_t);
477 static Rune utf8decodebyte(char, size_t *);
478 static size_t utf8encode(Rune, char *);
479 static char utf8encodebyte(Rune, size_t);
480 static char *utf8strchr(char *s, Rune u);
481 static size_t utf8validate(Rune *, size_t);
482
483 static ssize_t xwrite(int, const char *, size_t);
484 static void *xmalloc(size_t);
485 static void *xrealloc(void *, size_t);
486 static char *xstrdup(char *);
487
488 static void usage(void);
489 static void version(void);
490
491 static void (*handler[LASTEvent])(XEvent *) = {
492 [KeyPress] = kpress,
493 [ClientMessage] = cmessage,
494 [ConfigureNotify] = resize,
495 [VisibilityNotify] = visibility,
496 [UnmapNotify] = unmap,
497 [Expose] = expose,
498 [FocusIn] = focus,
499 [FocusOut] = focus,
500 [MotionNotify] = bmotion,
501 [ButtonPress] = bpress,
502 [ButtonRelease] = brelease,
503 /*
504 * Uncomment if you want the selection to disappear when you select something
505 * different in another window.
506 */
507 /* [SelectionClear] = selclear, */
508 [SelectionNotify] = selnotify,
509 /*
510 * PropertyNotify is only turned on when there is some INCR transfer happening
511 * for the selection retrieval.
512 */
513 [PropertyNotify] = propnotify,
514 [SelectionRequest] = selrequest,
515 };
516
517 /* Globals */
518 static DC dc;
519 static XWindow xw;
520 static Term term;
521 static CSIEscape csiescseq;
522 static STREscape strescseq;
523 static int cmdfd;
524 static pid_t pid;
525 static Selection sel;
526 static int iofd = 1;
527 static char **opt_cmd = NULL;
528 static char *opt_class = NULL;
529 static char *opt_embed = NULL;
530 static char *opt_font = NULL;
531 static char *opt_io = NULL;
532 static char *opt_line = NULL;
533 static char *opt_name = NULL;
534 static char *opt_title = NULL;
535 static int oldbutton = 3; /* button event on startup: 3 = release */
536
537 static char *usedfont = NULL;
538 static double usedfontsize = 0;
539 static double defaultfontsize = 0;
540
541 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
542 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
543 static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
544 static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
545
546 /* Font Ring Cache */
547 enum {
548 FRC_NORMAL,
549 FRC_ITALIC,
550 FRC_BOLD,
551 FRC_ITALICBOLD
552 };
553
554 typedef struct {
555 XftFont *font;
556 int flags;
557 Rune unicodep;
558 } Fontcache;
559
560 /* Fontcache is an array now. A new font will be appended to the array. */
561 static Fontcache frc[16];
562 static int frclen = 0;
563
564 ssize_t
565 xwrite(int fd, const char *s, size_t len)
566 {
567 size_t aux = len;
568 ssize_t r;
569
570 while (len > 0) {
571 r = write(fd, s, len);
572 if (r < 0)
573 return r;
574 len -= r;
575 s += r;
576 }
577
578 return aux;
579 }
580
581 void *
582 xmalloc(size_t len)
583 {
584 void *p = malloc(len);
585
586 if (!p)
587 die("Out of memory\n");
588
589 return p;
590 }
591
592 void *
593 xrealloc(void *p, size_t len)
594 {
595 if ((p = realloc(p, len)) == NULL)
596 die("Out of memory\n");
597
598 return p;
599 }
600
601 char *
602 xstrdup(char *s)
603 {
604 if ((s = strdup(s)) == NULL)
605 die("Out of memory\n");
606
607 return s;
608 }
609
610 size_t
611 utf8decode(char *c, Rune *u, size_t clen)
612 {
613 size_t i, j, len, type;
614 Rune udecoded;
615
616 *u = UTF_INVALID;
617 if (!clen)
618 return 0;
619 udecoded = utf8decodebyte(c[0], &len);
620 if (!BETWEEN(len, 1, UTF_SIZ))
621 return 1;
622 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
623 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
624 if (type != 0)
625 return j;
626 }
627 if (j < len)
628 return 0;
629 *u = udecoded;
630 utf8validate(u, len);
631
632 return len;
633 }
634
635 Rune
636 utf8decodebyte(char c, size_t *i)
637 {
638 for (*i = 0; *i < LEN(utfmask); ++(*i))
639 if (((uchar)c & utfmask[*i]) == utfbyte[*i])
640 return (uchar)c & ~utfmask[*i];
641
642 return 0;
643 }
644
645 size_t
646 utf8encode(Rune u, char *c)
647 {
648 size_t len, i;
649
650 len = utf8validate(&u, 0);
651 if (len > UTF_SIZ)
652 return 0;
653
654 for (i = len - 1; i != 0; --i) {
655 c[i] = utf8encodebyte(u, 0);
656 u >>= 6;
657 }
658 c[0] = utf8encodebyte(u, len);
659
660 return len;
661 }
662
663 char
664 utf8encodebyte(Rune u, size_t i)
665 {
666 return utfbyte[i] | (u & ~utfmask[i]);
667 }
668
669 char *
670 utf8strchr(char *s, Rune u)
671 {
672 Rune r;
673 size_t i, j, len;
674
675 len = strlen(s);
676 for (i = 0, j = 0; i < len; i += j) {
677 if (!(j = utf8decode(&s[i], &r, len - i)))
678 break;
679 if (r == u)
680 return &(s[i]);
681 }
682
683 return NULL;
684 }
685
686 size_t
687 utf8validate(Rune *u, size_t i)
688 {
689 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
690 *u = UTF_INVALID;
691 for (i = 1; *u > utfmax[i]; ++i)
692 ;
693
694 return i;
695 }
696
697 void
698 selinit(void)
699 {
700 clock_gettime(CLOCK_MONOTONIC, &sel.tclick1);
701 clock_gettime(CLOCK_MONOTONIC, &sel.tclick2);
702 sel.mode = SEL_IDLE;
703 sel.snap = 0;
704 sel.ob.x = -1;
705 sel.primary = NULL;
706 sel.clipboard = NULL;
707 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
708 if (sel.xtarget == None)
709 sel.xtarget = XA_STRING;
710 }
711
712 int
713 x2col(int x)
714 {
715 x -= borderpx;
716 x /= xw.cw;
717
718 return LIMIT(x, 0, term.col-1);
719 }
720
721 int
722 y2row(int y)
723 {
724 y -= borderpx;
725 y /= xw.ch;
726
727 return LIMIT(y, 0, term.row-1);
728 }
729
730 int
731 tlinelen(int y)
732 {
733 int i = term.col;
734
735 if (term.line[y][i - 1].mode & ATTR_WRAP)
736 return i;
737
738 while (i > 0 && term.line[y][i - 1].u == ' ')
739 --i;
740
741 return i;
742 }
743
744 void
745 selnormalize(void)
746 {
747 int i;
748
749 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
750 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
751 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
752 } else {
753 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
754 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
755 }
756 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
757 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
758
759 selsnap(&sel.nb.x, &sel.nb.y, -1);
760 selsnap(&sel.ne.x, &sel.ne.y, +1);
761
762 /* expand selection over line breaks */
763 if (sel.type == SEL_RECTANGULAR)
764 return;
765 i = tlinelen(sel.nb.y);
766 if (i < sel.nb.x)
767 sel.nb.x = i;
768 if (tlinelen(sel.ne.y) <= sel.ne.x)
769 sel.ne.x = term.col - 1;
770 }
771
772 int
773 selected(int x, int y)
774 {
775 if (sel.mode == SEL_EMPTY)
776 return 0;
777
778 if (sel.type == SEL_RECTANGULAR)
779 return BETWEEN(y, sel.nb.y, sel.ne.y)
780 && BETWEEN(x, sel.nb.x, sel.ne.x);
781
782 return BETWEEN(y, sel.nb.y, sel.ne.y)
783 && (y != sel.nb.y || x >= sel.nb.x)
784 && (y != sel.ne.y || x <= sel.ne.x);
785 }
786
787 void
788 selsnap(int *x, int *y, int direction)
789 {
790 int newx, newy, xt, yt;
791 int delim, prevdelim;
792 Glyph *gp, *prevgp;
793
794 switch (sel.snap) {
795 case SNAP_WORD:
796 /*
797 * Snap around if the word wraps around at the end or
798 * beginning of a line.
799 */
800 prevgp = &term.line[*y][*x];
801 prevdelim = ISDELIM(prevgp->u);
802 for (;;) {
803 newx = *x + direction;
804 newy = *y;
805 if (!BETWEEN(newx, 0, term.col - 1)) {
806 newy += direction;
807 newx = (newx + term.col) % term.col;
808 if (!BETWEEN(newy, 0, term.row - 1))
809 break;
810
811 if (direction > 0)
812 yt = *y, xt = *x;
813 else
814 yt = newy, xt = newx;
815 if (!(term.line[yt][xt].mode & ATTR_WRAP))
816 break;
817 }
818
819 if (newx >= tlinelen(newy))
820 break;
821
822 gp = &term.line[newy][newx];
823 delim = ISDELIM(gp->u);
824 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
825 || (delim && gp->u != prevgp->u)))
826 break;
827
828 *x = newx;
829 *y = newy;
830 prevgp = gp;
831 prevdelim = delim;
832 }
833 break;
834 case SNAP_LINE:
835 /*
836 * Snap around if the the previous line or the current one
837 * has set ATTR_WRAP at its end. Then the whole next or
838 * previous line will be selected.
839 */
840 *x = (direction < 0) ? 0 : term.col - 1;
841 if (direction < 0) {
842 for (; *y > 0; *y += direction) {
843 if (!(term.line[*y-1][term.col-1].mode
844 & ATTR_WRAP)) {
845 break;
846 }
847 }
848 } else if (direction > 0) {
849 for (; *y < term.row-1; *y += direction) {
850 if (!(term.line[*y][term.col-1].mode
851 & ATTR_WRAP)) {
852 break;
853 }
854 }
855 }
856 break;
857 }
858 }
859
860 void
861 getbuttoninfo(XEvent *e)
862 {
863 int type;
864 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
865
866 sel.alt = IS_SET(MODE_ALTSCREEN);
867
868 sel.oe.x = x2col(e->xbutton.x);
869 sel.oe.y = y2row(e->xbutton.y);
870 selnormalize();
871
872 sel.type = SEL_REGULAR;
873 for (type = 1; type < LEN(selmasks); ++type) {
874 if (match(selmasks[type], state)) {
875 sel.type = type;
876 break;
877 }
878 }
879 }
880
881 void
882 mousereport(XEvent *e)
883 {
884 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
885 button = e->xbutton.button, state = e->xbutton.state,
886 len;
887 char buf[40];
888 static int ox, oy;
889
890 /* from urxvt */
891 if (e->xbutton.type == MotionNotify) {
892 if (x == ox && y == oy)
893 return;
894 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
895 return;
896 /* MOUSE_MOTION: no reporting if no button is pressed */
897 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
898 return;
899
900 button = oldbutton + 32;
901 ox = x;
902 oy = y;
903 } else {
904 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
905 button = 3;
906 } else {
907 button -= Button1;
908 if (button >= 3)
909 button += 64 - 3;
910 }
911 if (e->xbutton.type == ButtonPress) {
912 oldbutton = button;
913 ox = x;
914 oy = y;
915 } else if (e->xbutton.type == ButtonRelease) {
916 oldbutton = 3;
917 /* MODE_MOUSEX10: no button release reporting */
918 if (IS_SET(MODE_MOUSEX10))
919 return;
920 if (button == 64 || button == 65)
921 return;
922 }
923 }
924
925 if (!IS_SET(MODE_MOUSEX10)) {
926 button += ((state & ShiftMask ) ? 4 : 0)
927 + ((state & Mod4Mask ) ? 8 : 0)
928 + ((state & ControlMask) ? 16 : 0);
929 }
930
931 if (IS_SET(MODE_MOUSESGR)) {
932 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
933 button, x+1, y+1,
934 e->xbutton.type == ButtonRelease ? 'm' : 'M');
935 } else if (x < 223 && y < 223) {
936 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
937 32+button, 32+x+1, 32+y+1);
938 } else {
939 return;
940 }
941
942 ttywrite(buf, len);
943 }
944
945 void
946 bpress(XEvent *e)
947 {
948 struct timespec now;
949 MouseShortcut *ms;
950
951 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
952 mousereport(e);
953 return;
954 }
955
956 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
957 if (e->xbutton.button == ms->b
958 && match(ms->mask, e->xbutton.state)) {
959 ttysend(ms->s, strlen(ms->s));
960 return;
961 }
962 }
963
964 if (e->xbutton.button == Button1) {
965 clock_gettime(CLOCK_MONOTONIC, &now);
966
967 /* Clear previous selection, logically and visually. */
968 selclear(NULL);
969 sel.mode = SEL_EMPTY;
970 sel.type = SEL_REGULAR;
971 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
972 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
973
974 /*
975 * If the user clicks below predefined timeouts specific
976 * snapping behaviour is exposed.
977 */
978 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
979 sel.snap = SNAP_LINE;
980 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
981 sel.snap = SNAP_WORD;
982 } else {
983 sel.snap = 0;
984 }
985 selnormalize();
986
987 if (sel.snap != 0)
988 sel.mode = SEL_READY;
989 tsetdirt(sel.nb.y, sel.ne.y);
990 sel.tclick2 = sel.tclick1;
991 sel.tclick1 = now;
992 }
993 }
994
995 char *
996 getsel(void)
997 {
998 char *str, *ptr;
999 int y, bufsize, lastx, linelen;
1000 Glyph *gp, *last;
1001
1002 if (sel.ob.x == -1)
1003 return NULL;
1004
1005 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
1006 ptr = str = xmalloc(bufsize);
1007
1008 /* append every set & selected glyph to the selection */
1009 for (y = sel.nb.y; y <= sel.ne.y; y++) {
1010 if ((linelen = tlinelen(y)) == 0) {
1011 *ptr++ = '\n';
1012 continue;
1013 }
1014
1015 if (sel.type == SEL_RECTANGULAR) {
1016 gp = &term.line[y][sel.nb.x];
1017 lastx = sel.ne.x;
1018 } else {
1019 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
1020 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
1021 }
1022 last = &term.line[y][MIN(lastx, linelen-1)];
1023 while (last >= gp && last->u == ' ')
1024 --last;
1025
1026 for ( ; gp <= last; ++gp) {
1027 if (gp->mode & ATTR_WDUMMY)
1028 continue;
1029
1030 ptr += utf8encode(gp->u, ptr);
1031 }
1032
1033 /*
1034 * Copy and pasting of line endings is inconsistent
1035 * in the inconsistent terminal and GUI world.
1036 * The best solution seems like to produce '\n' when
1037 * something is copied from st and convert '\n' to
1038 * '\r', when something to be pasted is received by
1039 * st.
1040 * FIXME: Fix the computer world.
1041 */
1042 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
1043 *ptr++ = '\n';
1044 }
1045 *ptr = 0;
1046 return str;
1047 }
1048
1049 void
1050 selcopy(Time t)
1051 {
1052 xsetsel(getsel(), t);
1053 }
1054
1055 void
1056 propnotify(XEvent *e)
1057 {
1058 XPropertyEvent *xpev;
1059 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1060
1061 xpev = &e->xproperty;
1062 if (xpev->state == PropertyNewValue &&
1063 (xpev->atom == XA_PRIMARY ||
1064 xpev->atom == clipboard)) {
1065 selnotify(e);
1066 }
1067 }
1068
1069 void
1070 selnotify(XEvent *e)
1071 {
1072 ulong nitems, ofs, rem;
1073 int format;
1074 uchar *data, *last, *repl;
1075 Atom type, incratom, property;
1076
1077 incratom = XInternAtom(xw.dpy, "INCR", 0);
1078
1079 ofs = 0;
1080 if (e->type == SelectionNotify) {
1081 property = e->xselection.property;
1082 } else if(e->type == PropertyNotify) {
1083 property = e->xproperty.atom;
1084 } else {
1085 return;
1086 }
1087 if (property == None)
1088 return;
1089
1090 do {
1091 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
1092 BUFSIZ/4, False, AnyPropertyType,
1093 &type, &format, &nitems, &rem,
1094 &data)) {
1095 fprintf(stderr, "Clipboard allocation failed\n");
1096 return;
1097 }
1098
1099 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
1100 /*
1101 * If there is some PropertyNotify with no data, then
1102 * this is the signal of the selection owner that all
1103 * data has been transferred. We won't need to receive
1104 * PropertyNotify events anymore.
1105 */
1106 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
1107 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1108 &xw.attrs);
1109 }
1110
1111 if (type == incratom) {
1112 /*
1113 * Activate the PropertyNotify events so we receive
1114 * when the selection owner does send us the next
1115 * chunk of data.
1116 */
1117 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
1118 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1119 &xw.attrs);
1120
1121 /*
1122 * Deleting the property is the transfer start signal.
1123 */
1124 XDeleteProperty(xw.dpy, xw.win, (int)property);
1125 continue;
1126 }
1127
1128 /*
1129 * As seen in getsel:
1130 * Line endings are inconsistent in the terminal and GUI world
1131 * copy and pasting. When receiving some selection data,
1132 * replace all '\n' with '\r'.
1133 * FIXME: Fix the computer world.
1134 */
1135 repl = data;
1136 last = data + nitems * format / 8;
1137 while ((repl = memchr(repl, '\n', last - repl))) {
1138 *repl++ = '\r';
1139 }
1140
1141 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
1142 ttywrite("\033[200~", 6);
1143 ttysend((char *)data, nitems * format / 8);
1144 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
1145 ttywrite("\033[201~", 6);
1146 XFree(data);
1147 /* number of 32-bit chunks returned */
1148 ofs += nitems * format / 32;
1149 } while (rem > 0);
1150
1151 /*
1152 * Deleting the property again tells the selection owner to send the
1153 * next data chunk in the property.
1154 */
1155 if (e->type == PropertyNotify)
1156 XDeleteProperty(xw.dpy, xw.win, (int)property);
1157 }
1158
1159 void
1160 selpaste(const Arg *dummy)
1161 {
1162 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1163 xw.win, CurrentTime);
1164 }
1165
1166 void
1167 clipcopy(const Arg *dummy)
1168 {
1169 Atom clipboard;
1170
1171 if (sel.clipboard != NULL)
1172 free(sel.clipboard);
1173
1174 if (sel.primary != NULL) {
1175 sel.clipboard = xstrdup(sel.primary);
1176 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1177 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1178 }
1179 }
1180
1181 void
1182 clippaste(const Arg *dummy)
1183 {
1184 Atom clipboard;
1185
1186 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1187 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1188 xw.win, CurrentTime);
1189 }
1190
1191 void
1192 selclear(XEvent *e)
1193 {
1194 if (sel.ob.x == -1)
1195 return;
1196 sel.mode = SEL_IDLE;
1197 sel.ob.x = -1;
1198 tsetdirt(sel.nb.y, sel.ne.y);
1199 }
1200
1201 void
1202 selrequest(XEvent *e)
1203 {
1204 XSelectionRequestEvent *xsre;
1205 XSelectionEvent xev;
1206 Atom xa_targets, string, clipboard;
1207 char *seltext;
1208
1209 xsre = (XSelectionRequestEvent *) e;
1210 xev.type = SelectionNotify;
1211 xev.requestor = xsre->requestor;
1212 xev.selection = xsre->selection;
1213 xev.target = xsre->target;
1214 xev.time = xsre->time;
1215 if (xsre->property == None)
1216 xsre->property = xsre->target;
1217
1218 /* reject */
1219 xev.property = None;
1220
1221 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1222 if (xsre->target == xa_targets) {
1223 /* respond with the supported type */
1224 string = sel.xtarget;
1225 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1226 XA_ATOM, 32, PropModeReplace,
1227 (uchar *) &string, 1);
1228 xev.property = xsre->property;
1229 } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1230 /*
1231 * xith XA_STRING non ascii characters may be incorrect in the
1232 * requestor. It is not our problem, use utf8.
1233 */
1234 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1235 if (xsre->selection == XA_PRIMARY) {
1236 seltext = sel.primary;
1237 } else if (xsre->selection == clipboard) {
1238 seltext = sel.clipboard;
1239 } else {
1240 fprintf(stderr,
1241 "Unhandled clipboard selection 0x%lx\n",
1242 xsre->selection);
1243 return;
1244 }
1245 if (seltext != NULL) {
1246 XChangeProperty(xsre->display, xsre->requestor,
1247 xsre->property, xsre->target,
1248 8, PropModeReplace,
1249 (uchar *)seltext, strlen(seltext));
1250 xev.property = xsre->property;
1251 }
1252 }
1253
1254 /* all done, send a notification to the listener */
1255 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
1256 fprintf(stderr, "Error sending SelectionNotify event\n");
1257 }
1258
1259 void
1260 xsetsel(char *str, Time t)
1261 {
1262 free(sel.primary);
1263 sel.primary = str;
1264
1265 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1266 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1267 selclear(0);
1268 }
1269
1270 void
1271 brelease(XEvent *e)
1272 {
1273 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1274 mousereport(e);
1275 return;
1276 }
1277
1278 if (e->xbutton.button == Button2) {
1279 selpaste(NULL);
1280 } else if (e->xbutton.button == Button1) {
1281 if (sel.mode == SEL_READY) {
1282 getbuttoninfo(e);
1283 selcopy(e->xbutton.time);
1284 } else
1285 selclear(NULL);
1286 sel.mode = SEL_IDLE;
1287 tsetdirt(sel.nb.y, sel.ne.y);
1288 }
1289 }
1290
1291 void
1292 bmotion(XEvent *e)
1293 {
1294 int oldey, oldex, oldsby, oldsey;
1295
1296 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1297 mousereport(e);
1298 return;
1299 }
1300
1301 if (!sel.mode)
1302 return;
1303
1304 sel.mode = SEL_READY;
1305 oldey = sel.oe.y;
1306 oldex = sel.oe.x;
1307 oldsby = sel.nb.y;
1308 oldsey = sel.ne.y;
1309 getbuttoninfo(e);
1310
1311 if (oldey != sel.oe.y || oldex != sel.oe.x)
1312 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1313 }
1314
1315 void
1316 die(const char *errstr, ...)
1317 {
1318 va_list ap;
1319
1320 va_start(ap, errstr);
1321 vfprintf(stderr, errstr, ap);
1322 va_end(ap);
1323 exit(1);
1324 }
1325
1326 void
1327 execsh(void)
1328 {
1329 char **args, *sh, *prog;
1330 const struct passwd *pw;
1331 char buf[sizeof(long) * 8 + 1];
1332
1333 errno = 0;
1334 if ((pw = getpwuid(getuid())) == NULL) {
1335 if (errno)
1336 die("getpwuid:%s\n", strerror(errno));
1337 else
1338 die("who are you?\n");
1339 }
1340
1341 if ((sh = getenv("SHELL")) == NULL)
1342 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1343
1344 if (opt_cmd)
1345 prog = opt_cmd[0];
1346 else if (utmp)
1347 prog = utmp;
1348 else
1349 prog = sh;
1350 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1351
1352 snprintf(buf, sizeof(buf), "%lu", xw.win);
1353
1354 unsetenv("COLUMNS");
1355 unsetenv("LINES");
1356 unsetenv("TERMCAP");
1357 setenv("LOGNAME", pw->pw_name, 1);
1358 setenv("USER", pw->pw_name, 1);
1359 setenv("SHELL", sh, 1);
1360 setenv("HOME", pw->pw_dir, 1);
1361 setenv("TERM", termname, 1);
1362 setenv("WINDOWID", buf, 1);
1363
1364 signal(SIGCHLD, SIG_DFL);
1365 signal(SIGHUP, SIG_DFL);
1366 signal(SIGINT, SIG_DFL);
1367 signal(SIGQUIT, SIG_DFL);
1368 signal(SIGTERM, SIG_DFL);
1369 signal(SIGALRM, SIG_DFL);
1370
1371 execvp(prog, args);
1372 _exit(1);
1373 }
1374
1375 void
1376 sigchld(int a)
1377 {
1378 int stat;
1379 pid_t p;
1380
1381 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
1382 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1383
1384 if (pid != p)
1385 return;
1386
1387 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
1388 die("child finished with error '%d'\n", stat);
1389 exit(0);
1390 }
1391
1392
1393 void
1394 stty(void)
1395 {
1396 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1397 size_t n, siz;
1398
1399 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
1400 die("incorrect stty parameters\n");
1401 memcpy(cmd, stty_args, n);
1402 q = cmd + n;
1403 siz = sizeof(cmd) - n;
1404 for (p = opt_cmd; p && (s = *p); ++p) {
1405 if ((n = strlen(s)) > siz-1)
1406 die("stty parameter length too long\n");
1407 *q++ = ' ';
1408 q = memcpy(q, s, n);
1409 q += n;
1410 siz-= n + 1;
1411 }
1412 *q = '\0';
1413 if (system(cmd) != 0)
1414 perror("Couldn't call stty");
1415 }
1416
1417 void
1418 ttynew(void)
1419 {
1420 int m, s;
1421 struct winsize w = {term.row, term.col, 0, 0};
1422
1423 if (opt_io) {
1424 term.mode |= MODE_PRINT;
1425 iofd = (!strcmp(opt_io, "-")) ?
1426 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
1427 if (iofd < 0) {
1428 fprintf(stderr, "Error opening %s:%s\n",
1429 opt_io, strerror(errno));
1430 }
1431 }
1432
1433 if (opt_line) {
1434 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
1435 die("open line failed: %s\n", strerror(errno));
1436 dup2(cmdfd, 0);
1437 stty();
1438 return;
1439 }
1440
1441 /* seems to work fine on linux, openbsd and freebsd */
1442 if (openpty(&m, &s, NULL, NULL, &w) < 0)
1443 die("openpty failed: %s\n", strerror(errno));
1444
1445 ttyresize();
1446
1447 switch (pid = fork()) {
1448 case -1:
1449 die("fork failed\n");
1450 break;
1451 case 0:
1452 close(iofd);
1453 setsid(); /* create a new process group */
1454 dup2(s, 0);
1455 dup2(s, 1);
1456 dup2(s, 2);
1457 if (ioctl(s, TIOCSCTTY, NULL) < 0)
1458 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1459 close(s);
1460 close(m);
1461 execsh();
1462 break;
1463 default:
1464 close(s);
1465 cmdfd = m;
1466 signal(SIGCHLD, sigchld);
1467 break;
1468 }
1469 }
1470
1471 size_t
1472 ttyread(void)
1473 {
1474 static char buf[BUFSIZ];
1475 static int buflen = 0;
1476 char *ptr;
1477 int charsize; /* size of utf8 char in bytes */
1478 Rune unicodep;
1479 int ret;
1480
1481 /* append read bytes to unprocessed bytes */
1482 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1483 die("Couldn't read from shell: %s\n", strerror(errno));
1484
1485 /* process every complete utf8 char */
1486 buflen += ret;
1487 ptr = buf;
1488 while ((charsize = utf8decode(ptr, &unicodep, buflen))) {
1489 tputc(unicodep);
1490 ptr += charsize;
1491 buflen -= charsize;
1492 }
1493
1494 /* keep any uncomplete utf8 char for the next call */
1495 memmove(buf, ptr, buflen);
1496
1497 return ret;
1498 }
1499
1500 void
1501 ttywrite(const char *s, size_t n)
1502 {
1503 fd_set wfd, rfd;
1504 ssize_t r;
1505 size_t lim = 256;
1506
1507 /*
1508 * Remember that we are using a pty, which might be a modem line.
1509 * Writing too much will clog the line. That's why we are doing this
1510 * dance.
1511 * FIXME: Migrate the world to Plan 9.
1512 */
1513 while (n > 0) {
1514 FD_ZERO(&wfd);
1515 FD_ZERO(&rfd);
1516 FD_SET(cmdfd, &wfd);
1517 FD_SET(cmdfd, &rfd);
1518
1519 /* Check if we can write. */
1520 if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
1521 if (errno == EINTR)
1522 continue;
1523 die("select failed: %s\n", strerror(errno));
1524 }
1525 if (FD_ISSET(cmdfd, &wfd)) {
1526 /*
1527 * Only write the bytes written by ttywrite() or the
1528 * default of 256. This seems to be a reasonable value
1529 * for a serial line. Bigger values might clog the I/O.
1530 */
1531 if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
1532 goto write_error;
1533 if (r < n) {
1534 /*
1535 * We weren't able to write out everything.
1536 * This means the buffer is getting full
1537 * again. Empty it.
1538 */
1539 if (n < lim)
1540 lim = ttyread();
1541 n -= r;
1542 s += r;
1543 } else {
1544 /* All bytes have been written. */
1545 break;
1546 }
1547 }
1548 if (FD_ISSET(cmdfd, &rfd))
1549 lim = ttyread();
1550 }
1551 return;
1552
1553 write_error:
1554 die("write error on tty: %s\n", strerror(errno));
1555 }
1556
1557 void
1558 ttysend(char *s, size_t n)
1559 {
1560 int len;
1561 Rune u;
1562
1563 ttywrite(s, n);
1564 if (IS_SET(MODE_ECHO))
1565 while ((len = utf8decode(s, &u, n)) > 0) {
1566 techo(u);
1567 n -= len;
1568 s += len;
1569 }
1570 }
1571
1572 void
1573 ttyresize(void)
1574 {
1575 struct winsize w;
1576
1577 w.ws_row = term.row;
1578 w.ws_col = term.col;
1579 w.ws_xpixel = xw.tw;
1580 w.ws_ypixel = xw.th;
1581 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1582 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1583 }
1584
1585 int
1586 tattrset(int attr)
1587 {
1588 int i, j;
1589
1590 for (i = 0; i < term.row-1; i++) {
1591 for (j = 0; j < term.col-1; j++) {
1592 if (term.line[i][j].mode & attr)
1593 return 1;
1594 }
1595 }
1596
1597 return 0;
1598 }
1599
1600 void
1601 tsetdirt(int top, int bot)
1602 {
1603 int i;
1604
1605 LIMIT(top, 0, term.row-1);
1606 LIMIT(bot, 0, term.row-1);
1607
1608 for (i = top; i <= bot; i++)
1609 term.dirty[i] = 1;
1610 }
1611
1612 void
1613 tsetdirtattr(int attr)
1614 {
1615 int i, j;
1616
1617 for (i = 0; i < term.row-1; i++) {
1618 for (j = 0; j < term.col-1; j++) {
1619 if (term.line[i][j].mode & attr) {
1620 tsetdirt(i, i);
1621 break;
1622 }
1623 }
1624 }
1625 }
1626
1627 void
1628 tfulldirt(void)
1629 {
1630 tsetdirt(0, term.row-1);
1631 }
1632
1633 void
1634 tcursor(int mode)
1635 {
1636 static TCursor c[2];
1637 int alt = IS_SET(MODE_ALTSCREEN);
1638
1639 if (mode == CURSOR_SAVE) {
1640 c[alt] = term.c;
1641 } else if (mode == CURSOR_LOAD) {
1642 term.c = c[alt];
1643 tmoveto(c[alt].x, c[alt].y);
1644 }
1645 }
1646
1647 void
1648 treset(void)
1649 {
1650 uint i;
1651
1652 term.c = (TCursor){{
1653 .mode = ATTR_NULL,
1654 .fg = defaultfg,
1655 .bg = defaultbg
1656 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1657
1658 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1659 for (i = tabspaces; i < term.col; i += tabspaces)
1660 term.tabs[i] = 1;
1661 term.top = 0;
1662 term.bot = term.row - 1;
1663 term.mode = MODE_WRAP;
1664 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1665 term.charset = 0;
1666
1667 for (i = 0; i < 2; i++) {
1668 tmoveto(0, 0);
1669 tcursor(CURSOR_SAVE);
1670 tclearregion(0, 0, term.col-1, term.row-1);
1671 tswapscreen();
1672 }
1673 }
1674
1675 void
1676 tnew(int col, int row)
1677 {
1678 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1679 tresize(col, row);
1680 term.numlock = 1;
1681
1682 treset();
1683 }
1684
1685 void
1686 tswapscreen(void)
1687 {
1688 Line *tmp = term.line;
1689
1690 term.line = term.alt;
1691 term.alt = tmp;
1692 term.mode ^= MODE_ALTSCREEN;
1693 tfulldirt();
1694 }
1695
1696 void
1697 tscrolldown(int orig, int n)
1698 {
1699 int i;
1700 Line temp;
1701
1702 LIMIT(n, 0, term.bot-orig+1);
1703
1704 tsetdirt(orig, term.bot-n);
1705 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1706
1707 for (i = term.bot; i >= orig+n; i--) {
1708 temp = term.line[i];
1709 term.line[i] = term.line[i-n];
1710 term.line[i-n] = temp;
1711 }
1712
1713 selscroll(orig, n);
1714 }
1715
1716 void
1717 tscrollup(int orig, int n)
1718 {
1719 int i;
1720 Line temp;
1721
1722 LIMIT(n, 0, term.bot-orig+1);
1723
1724 tclearregion(0, orig, term.col-1, orig+n-1);
1725 tsetdirt(orig+n, term.bot);
1726
1727 for (i = orig; i <= term.bot-n; i++) {
1728 temp = term.line[i];
1729 term.line[i] = term.line[i+n];
1730 term.line[i+n] = temp;
1731 }
1732
1733 selscroll(orig, -n);
1734 }
1735
1736 void
1737 selscroll(int orig, int n)
1738 {
1739 if (sel.ob.x == -1)
1740 return;
1741
1742 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1743 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1744 selclear(NULL);
1745 return;
1746 }
1747 if (sel.type == SEL_RECTANGULAR) {
1748 if (sel.ob.y < term.top)
1749 sel.ob.y = term.top;
1750 if (sel.oe.y > term.bot)
1751 sel.oe.y = term.bot;
1752 } else {
1753 if (sel.ob.y < term.top) {
1754 sel.ob.y = term.top;
1755 sel.ob.x = 0;
1756 }
1757 if (sel.oe.y > term.bot) {
1758 sel.oe.y = term.bot;
1759 sel.oe.x = term.col;
1760 }
1761 }
1762 selnormalize();
1763 }
1764 }
1765
1766 void
1767 tnewline(int first_col)
1768 {
1769 int y = term.c.y;
1770
1771 if (y == term.bot) {
1772 tscrollup(term.top, 1);
1773 } else {
1774 y++;
1775 }
1776 tmoveto(first_col ? 0 : term.c.x, y);
1777 }
1778
1779 void
1780 csiparse(void)
1781 {
1782 char *p = csiescseq.buf, *np;
1783 long int v;
1784
1785 csiescseq.narg = 0;
1786 if (*p == '?') {
1787 csiescseq.priv = 1;
1788 p++;
1789 }
1790
1791 csiescseq.buf[csiescseq.len] = '\0';
1792 while (p < csiescseq.buf+csiescseq.len) {
1793 np = NULL;
1794 v = strtol(p, &np, 10);
1795 if (np == p)
1796 v = 0;
1797 if (v == LONG_MAX || v == LONG_MIN)
1798 v = -1;
1799 csiescseq.arg[csiescseq.narg++] = v;
1800 p = np;
1801 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1802 break;
1803 p++;
1804 }
1805 csiescseq.mode[0] = *p++;
1806 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1807 }
1808
1809 /* for absolute user moves, when decom is set */
1810 void
1811 tmoveato(int x, int y)
1812 {
1813 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1814 }
1815
1816 void
1817 tmoveto(int x, int y)
1818 {
1819 int miny, maxy;
1820
1821 if (term.c.state & CURSOR_ORIGIN) {
1822 miny = term.top;
1823 maxy = term.bot;
1824 } else {
1825 miny = 0;
1826 maxy = term.row - 1;
1827 }
1828 term.c.state &= ~CURSOR_WRAPNEXT;
1829 term.c.x = LIMIT(x, 0, term.col-1);
1830 term.c.y = LIMIT(y, miny, maxy);
1831 }
1832
1833 void
1834 tsetchar(Rune u, Glyph *attr, int x, int y)
1835 {
1836 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1837 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1838 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1839 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1840 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1841 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1842 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1843 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1844 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1845 };
1846
1847 /*
1848 * The table is proudly stolen from rxvt.
1849 */
1850 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1851 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1852 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1853
1854 if (term.line[y][x].mode & ATTR_WIDE) {
1855 if (x+1 < term.col) {
1856 term.line[y][x+1].u = ' ';
1857 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1858 }
1859 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1860 term.line[y][x-1].u = ' ';
1861 term.line[y][x-1].mode &= ~ATTR_WIDE;
1862 }
1863
1864 term.dirty[y] = 1;
1865 term.line[y][x] = *attr;
1866 term.line[y][x].u = u;
1867 }
1868
1869 void
1870 tclearregion(int x1, int y1, int x2, int y2)
1871 {
1872 int x, y, temp;
1873 Glyph *gp;
1874
1875 if (x1 > x2)
1876 temp = x1, x1 = x2, x2 = temp;
1877 if (y1 > y2)
1878 temp = y1, y1 = y2, y2 = temp;
1879
1880 LIMIT(x1, 0, term.col-1);
1881 LIMIT(x2, 0, term.col-1);
1882 LIMIT(y1, 0, term.row-1);
1883 LIMIT(y2, 0, term.row-1);
1884
1885 for (y = y1; y <= y2; y++) {
1886 term.dirty[y] = 1;
1887 for (x = x1; x <= x2; x++) {
1888 gp = &term.line[y][x];
1889 if (selected(x, y))
1890 selclear(NULL);
1891 gp->fg = term.c.attr.fg;
1892 gp->bg = term.c.attr.bg;
1893 gp->mode = 0;
1894 gp->u = ' ';
1895 }
1896 }
1897 }
1898
1899 void
1900 tdeletechar(int n)
1901 {
1902 int dst, src, size;
1903 Glyph *line;
1904
1905 LIMIT(n, 0, term.col - term.c.x);
1906
1907 dst = term.c.x;
1908 src = term.c.x + n;
1909 size = term.col - src;
1910 line = term.line[term.c.y];
1911
1912 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1913 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1914 }
1915
1916 void
1917 tinsertblank(int n)
1918 {
1919 int dst, src, size;
1920 Glyph *line;
1921
1922 LIMIT(n, 0, term.col - term.c.x);
1923
1924 dst = term.c.x + n;
1925 src = term.c.x;
1926 size = term.col - dst;
1927 line = term.line[term.c.y];
1928
1929 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1930 tclearregion(src, term.c.y, dst - 1, term.c.y);
1931 }
1932
1933 void
1934 tinsertblankline(int n)
1935 {
1936 if (BETWEEN(term.c.y, term.top, term.bot))
1937 tscrolldown(term.c.y, n);
1938 }
1939
1940 void
1941 tdeleteline(int n)
1942 {
1943 if (BETWEEN(term.c.y, term.top, term.bot))
1944 tscrollup(term.c.y, n);
1945 }
1946
1947 int32_t
1948 tdefcolor(int *attr, int *npar, int l)
1949 {
1950 int32_t idx = -1;
1951 uint r, g, b;
1952
1953 switch (attr[*npar + 1]) {
1954 case 2: /* direct color in RGB space */
1955 if (*npar + 4 >= l) {
1956 fprintf(stderr,
1957 "erresc(38): Incorrect number of parameters (%d)\n",
1958 *npar);
1959 break;
1960 }
1961 r = attr[*npar + 2];
1962 g = attr[*npar + 3];
1963 b = attr[*npar + 4];
1964 *npar += 4;
1965 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1966 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1967 r, g, b);
1968 else
1969 idx = TRUECOLOR(r, g, b);
1970 break;
1971 case 5: /* indexed color */
1972 if (*npar + 2 >= l) {
1973 fprintf(stderr,
1974 "erresc(38): Incorrect number of parameters (%d)\n",
1975 *npar);
1976 break;
1977 }
1978 *npar += 2;
1979 if (!BETWEEN(attr[*npar], 0, 255))
1980 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1981 else
1982 idx = attr[*npar];
1983 break;
1984 case 0: /* implemented defined (only foreground) */
1985 case 1: /* transparent */
1986 case 3: /* direct color in CMY space */
1987 case 4: /* direct color in CMYK space */
1988 default:
1989 fprintf(stderr,
1990 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1991 break;
1992 }
1993
1994 return idx;
1995 }
1996
1997 void
1998 tsetattr(int *attr, int l)
1999 {
2000 int i;
2001 int32_t idx;
2002
2003 for (i = 0; i < l; i++) {
2004 switch (attr[i]) {
2005 case 0:
2006 term.c.attr.mode &= ~(
2007 ATTR_BOLD |
2008 ATTR_FAINT |
2009 ATTR_ITALIC |
2010 ATTR_UNDERLINE |
2011 ATTR_BLINK |
2012 ATTR_REVERSE |
2013 ATTR_INVISIBLE |
2014 ATTR_STRUCK );
2015 term.c.attr.fg = defaultfg;
2016 term.c.attr.bg = defaultbg;
2017 break;
2018 case 1:
2019 term.c.attr.mode |= ATTR_BOLD;
2020 break;
2021 case 2:
2022 term.c.attr.mode |= ATTR_FAINT;
2023 break;
2024 case 3:
2025 term.c.attr.mode |= ATTR_ITALIC;
2026 break;
2027 case 4:
2028 term.c.attr.mode |= ATTR_UNDERLINE;
2029 break;
2030 case 5: /* slow blink */
2031 /* FALLTHROUGH */
2032 case 6: /* rapid blink */
2033 term.c.attr.mode |= ATTR_BLINK;
2034 break;
2035 case 7:
2036 term.c.attr.mode |= ATTR_REVERSE;
2037 break;
2038 case 8:
2039 term.c.attr.mode |= ATTR_INVISIBLE;
2040 break;
2041 case 9:
2042 term.c.attr.mode |= ATTR_STRUCK;
2043 break;
2044 case 22:
2045 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
2046 break;
2047 case 23:
2048 term.c.attr.mode &= ~ATTR_ITALIC;
2049 break;
2050 case 24:
2051 term.c.attr.mode &= ~ATTR_UNDERLINE;
2052 break;
2053 case 25:
2054 term.c.attr.mode &= ~ATTR_BLINK;
2055 break;
2056 case 27:
2057 term.c.attr.mode &= ~ATTR_REVERSE;
2058 break;
2059 case 28:
2060 term.c.attr.mode &= ~ATTR_INVISIBLE;
2061 break;
2062 case 29:
2063 term.c.attr.mode &= ~ATTR_STRUCK;
2064 break;
2065 case 38:
2066 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2067 term.c.attr.fg = idx;
2068 break;
2069 case 39:
2070 term.c.attr.fg = defaultfg;
2071 break;
2072 case 48:
2073 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2074 term.c.attr.bg = idx;
2075 break;
2076 case 49:
2077 term.c.attr.bg = defaultbg;
2078 break;
2079 default:
2080 if (BETWEEN(attr[i], 30, 37)) {
2081 term.c.attr.fg = attr[i] - 30;
2082 } else if (BETWEEN(attr[i], 40, 47)) {
2083 term.c.attr.bg = attr[i] - 40;
2084 } else if (BETWEEN(attr[i], 90, 97)) {
2085 term.c.attr.fg = attr[i] - 90 + 8;
2086 } else if (BETWEEN(attr[i], 100, 107)) {
2087 term.c.attr.bg = attr[i] - 100 + 8;
2088 } else {
2089 fprintf(stderr,
2090 "erresc(default): gfx attr %d unknown\n",
2091 attr[i]), csidump();
2092 }
2093 break;
2094 }
2095 }
2096 }
2097
2098 void
2099 tsetscroll(int t, int b)
2100 {
2101 int temp;
2102
2103 LIMIT(t, 0, term.row-1);
2104 LIMIT(b, 0, term.row-1);
2105 if (t > b) {
2106 temp = t;
2107 t = b;
2108 b = temp;
2109 }
2110 term.top = t;
2111 term.bot = b;
2112 }
2113
2114 void
2115 tsetmode(int priv, int set, int *args, int narg)
2116 {
2117 int *lim, mode;
2118 int alt;
2119
2120 for (lim = args + narg; args < lim; ++args) {
2121 if (priv) {
2122 switch (*args) {
2123 case 1: /* DECCKM -- Cursor key */
2124 MODBIT(term.mode, set, MODE_APPCURSOR);
2125 break;
2126 case 5: /* DECSCNM -- Reverse video */
2127 mode = term.mode;
2128 MODBIT(term.mode, set, MODE_REVERSE);
2129 if (mode != term.mode)
2130 redraw();
2131 break;
2132 case 6: /* DECOM -- Origin */
2133 MODBIT(term.c.state, set, CURSOR_ORIGIN);
2134 tmoveato(0, 0);
2135 break;
2136 case 7: /* DECAWM -- Auto wrap */
2137 MODBIT(term.mode, set, MODE_WRAP);
2138 break;
2139 case 0: /* Error (IGNORED) */
2140 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
2141 case 3: /* DECCOLM -- Column (IGNORED) */
2142 case 4: /* DECSCLM -- Scroll (IGNORED) */
2143 case 8: /* DECARM -- Auto repeat (IGNORED) */
2144 case 18: /* DECPFF -- Printer feed (IGNORED) */
2145 case 19: /* DECPEX -- Printer extent (IGNORED) */
2146 case 42: /* DECNRCM -- National characters (IGNORED) */
2147 case 12: /* att610 -- Start blinking cursor (IGNORED) */
2148 break;
2149 case 25: /* DECTCEM -- Text Cursor Enable Mode */
2150 MODBIT(term.mode, !set, MODE_HIDE);
2151 break;
2152 case 9: /* X10 mouse compatibility mode */
2153 xsetpointermotion(0);
2154 MODBIT(term.mode, 0, MODE_MOUSE);
2155 MODBIT(term.mode, set, MODE_MOUSEX10);
2156 break;
2157 case 1000: /* 1000: report button press */
2158 xsetpointermotion(0);
2159 MODBIT(term.mode, 0, MODE_MOUSE);
2160 MODBIT(term.mode, set, MODE_MOUSEBTN);
2161 break;
2162 case 1002: /* 1002: report motion on button press */
2163 xsetpointermotion(0);
2164 MODBIT(term.mode, 0, MODE_MOUSE);
2165 MODBIT(term.mode, set, MODE_MOUSEMOTION);
2166 break;
2167 case 1003: /* 1003: enable all mouse motions */
2168 xsetpointermotion(set);
2169 MODBIT(term.mode, 0, MODE_MOUSE);
2170 MODBIT(term.mode, set, MODE_MOUSEMANY);
2171 break;
2172 case 1004: /* 1004: send focus events to tty */
2173 MODBIT(term.mode, set, MODE_FOCUS);
2174 break;
2175 case 1006: /* 1006: extended reporting mode */
2176 MODBIT(term.mode, set, MODE_MOUSESGR);
2177 break;
2178 case 1034:
2179 MODBIT(term.mode, set, MODE_8BIT);
2180 break;
2181 case 1049: /* swap screen & set/restore cursor as xterm */
2182 if (!allowaltscreen)
2183 break;
2184 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2185 /* FALLTHROUGH */
2186 case 47: /* swap screen */
2187 case 1047:
2188 if (!allowaltscreen)
2189 break;
2190 alt = IS_SET(MODE_ALTSCREEN);
2191 if (alt) {
2192 tclearregion(0, 0, term.col-1,
2193 term.row-1);
2194 }
2195 if (set ^ alt) /* set is always 1 or 0 */
2196 tswapscreen();
2197 if (*args != 1049)
2198 break;
2199 /* FALLTHROUGH */
2200 case 1048:
2201 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2202 break;
2203 case 2004: /* 2004: bracketed paste mode */
2204 MODBIT(term.mode, set, MODE_BRCKTPASTE);
2205 break;
2206 /* Not implemented mouse modes. See comments there. */
2207 case 1001: /* mouse highlight mode; can hang the
2208 terminal by design when implemented. */
2209 case 1005: /* UTF-8 mouse mode; will confuse
2210 applications not supporting UTF-8
2211 and luit. */
2212 case 1015: /* urxvt mangled mouse mode; incompatible
2213 and can be mistaken for other control
2214 codes. */
2215 default:
2216 fprintf(stderr,
2217 "erresc: unknown private set/reset mode %d\n",
2218 *args);
2219 break;
2220 }
2221 } else {
2222 switch (*args) {
2223 case 0: /* Error (IGNORED) */
2224 break;
2225 case 2: /* KAM -- keyboard action */
2226 MODBIT(term.mode, set, MODE_KBDLOCK);
2227 break;
2228 case 4: /* IRM -- Insertion-replacement */
2229 MODBIT(term.mode, set, MODE_INSERT);
2230 break;
2231 case 12: /* SRM -- Send/Receive */
2232 MODBIT(term.mode, !set, MODE_ECHO);
2233 break;
2234 case 20: /* LNM -- Linefeed/new line */
2235 MODBIT(term.mode, set, MODE_CRLF);
2236 break;
2237 default:
2238 fprintf(stderr,
2239 "erresc: unknown set/reset mode %d\n",
2240 *args);
2241 break;
2242 }
2243 }
2244 }
2245 }
2246
2247 void
2248 csihandle(void)
2249 {
2250 char buf[40];
2251 int len;
2252
2253 switch (csiescseq.mode[0]) {
2254 default:
2255 unknown:
2256 fprintf(stderr, "erresc: unknown csi ");
2257 csidump();
2258 /* die(""); */
2259 break;
2260 case '@': /* ICH -- Insert <n> blank char */
2261 DEFAULT(csiescseq.arg[0], 1);
2262 tinsertblank(csiescseq.arg[0]);
2263 break;
2264 case 'A': /* CUU -- Cursor <n> Up */
2265 DEFAULT(csiescseq.arg[0], 1);
2266 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2267 break;
2268 case 'B': /* CUD -- Cursor <n> Down */
2269 case 'e': /* VPR --Cursor <n> Down */
2270 DEFAULT(csiescseq.arg[0], 1);
2271 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2272 break;
2273 case 'i': /* MC -- Media Copy */
2274 switch (csiescseq.arg[0]) {
2275 case 0:
2276 tdump();
2277 break;
2278 case 1:
2279 tdumpline(term.c.y);
2280 break;
2281 case 2:
2282 tdumpsel();
2283 break;
2284 case 4:
2285 term.mode &= ~MODE_PRINT;
2286 break;
2287 case 5:
2288 term.mode |= MODE_PRINT;
2289 break;
2290 }
2291 break;
2292 case 'c': /* DA -- Device Attributes */
2293 if (csiescseq.arg[0] == 0)
2294 ttywrite(vtiden, sizeof(vtiden) - 1);
2295 break;
2296 case 'C': /* CUF -- Cursor <n> Forward */
2297 case 'a': /* HPR -- Cursor <n> Forward */
2298 DEFAULT(csiescseq.arg[0], 1);
2299 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2300 break;
2301 case 'D': /* CUB -- Cursor <n> Backward */
2302 DEFAULT(csiescseq.arg[0], 1);
2303 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2304 break;
2305 case 'E': /* CNL -- Cursor <n> Down and first col */
2306 DEFAULT(csiescseq.arg[0], 1);
2307 tmoveto(0, term.c.y+csiescseq.arg[0]);
2308 break;
2309 case 'F': /* CPL -- Cursor <n> Up and first col */
2310 DEFAULT(csiescseq.arg[0], 1);
2311 tmoveto(0, term.c.y-csiescseq.arg[0]);
2312 break;
2313 case 'g': /* TBC -- Tabulation clear */
2314 switch (csiescseq.arg[0]) {
2315 case 0: /* clear current tab stop */
2316 term.tabs[term.c.x] = 0;
2317 break;
2318 case 3: /* clear all the tabs */
2319 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2320 break;
2321 default:
2322 goto unknown;
2323 }
2324 break;
2325 case 'G': /* CHA -- Move to <col> */
2326 case '`': /* HPA */
2327 DEFAULT(csiescseq.arg[0], 1);
2328 tmoveto(csiescseq.arg[0]-1, term.c.y);
2329 break;
2330 case 'H': /* CUP -- Move to <row> <col> */
2331 case 'f': /* HVP */
2332 DEFAULT(csiescseq.arg[0], 1);
2333 DEFAULT(csiescseq.arg[1], 1);
2334 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2335 break;
2336 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2337 DEFAULT(csiescseq.arg[0], 1);
2338 tputtab(csiescseq.arg[0]);
2339 break;
2340 case 'J': /* ED -- Clear screen */
2341 selclear(NULL);
2342 switch (csiescseq.arg[0]) {
2343 case 0: /* below */
2344 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2345 if (term.c.y < term.row-1) {
2346 tclearregion(0, term.c.y+1, term.col-1,
2347 term.row-1);
2348 }
2349 break;
2350 case 1: /* above */
2351 if (term.c.y > 1)
2352 tclearregion(0, 0, term.col-1, term.c.y-1);
2353 tclearregion(0, term.c.y, term.c.x, term.c.y);
2354 break;
2355 case 2: /* all */
2356 tclearregion(0, 0, term.col-1, term.row-1);
2357 break;
2358 default:
2359 goto unknown;
2360 }
2361 break;
2362 case 'K': /* EL -- Clear line */
2363 switch (csiescseq.arg[0]) {
2364 case 0: /* right */
2365 tclearregion(term.c.x, term.c.y, term.col-1,
2366 term.c.y);
2367 break;
2368 case 1: /* left */
2369 tclearregion(0, term.c.y, term.c.x, term.c.y);
2370 break;
2371 case 2: /* all */
2372 tclearregion(0, term.c.y, term.col-1, term.c.y);
2373 break;
2374 }
2375 break;
2376 case 'S': /* SU -- Scroll <n> line up */
2377 DEFAULT(csiescseq.arg[0], 1);
2378 tscrollup(term.top, csiescseq.arg[0]);
2379 break;
2380 case 'T': /* SD -- Scroll <n> line down */
2381 DEFAULT(csiescseq.arg[0], 1);
2382 tscrolldown(term.top, csiescseq.arg[0]);
2383 break;
2384 case 'L': /* IL -- Insert <n> blank lines */
2385 DEFAULT(csiescseq.arg[0], 1);
2386 tinsertblankline(csiescseq.arg[0]);
2387 break;
2388 case 'l': /* RM -- Reset Mode */
2389 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2390 break;
2391 case 'M': /* DL -- Delete <n> lines */
2392 DEFAULT(csiescseq.arg[0], 1);
2393 tdeleteline(csiescseq.arg[0]);
2394 break;
2395 case 'X': /* ECH -- Erase <n> char */
2396 DEFAULT(csiescseq.arg[0], 1);
2397 tclearregion(term.c.x, term.c.y,
2398 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2399 break;
2400 case 'P': /* DCH -- Delete <n> char */
2401 DEFAULT(csiescseq.arg[0], 1);
2402 tdeletechar(csiescseq.arg[0]);
2403 break;
2404 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2405 DEFAULT(csiescseq.arg[0], 1);
2406 tputtab(-csiescseq.arg[0]);
2407 break;
2408 case 'd': /* VPA -- Move to <row> */
2409 DEFAULT(csiescseq.arg[0], 1);
2410 tmoveato(term.c.x, csiescseq.arg[0]-1);
2411 break;
2412 case 'h': /* SM -- Set terminal mode */
2413 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2414 break;
2415 case 'm': /* SGR -- Terminal attribute (color) */
2416 tsetattr(csiescseq.arg, csiescseq.narg);
2417 break;
2418 case 'n': /* DSR – Device Status Report (cursor position) */
2419 if (csiescseq.arg[0] == 6) {
2420 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2421 term.c.y+1, term.c.x+1);
2422 ttywrite(buf, len);
2423 }
2424 break;
2425 case 'r': /* DECSTBM -- Set Scrolling Region */
2426 if (csiescseq.priv) {
2427 goto unknown;
2428 } else {
2429 DEFAULT(csiescseq.arg[0], 1);
2430 DEFAULT(csiescseq.arg[1], term.row);
2431 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2432 tmoveato(0, 0);
2433 }
2434 break;
2435 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2436 tcursor(CURSOR_SAVE);
2437 break;
2438 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2439 tcursor(CURSOR_LOAD);
2440 break;
2441 case ' ':
2442 switch (csiescseq.mode[1]) {
2443 case 'q': /* DECSCUSR -- Set Cursor Style */
2444 DEFAULT(csiescseq.arg[0], 1);
2445 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2446 goto unknown;
2447 }
2448 xw.cursor = csiescseq.arg[0];
2449 break;
2450 default:
2451 goto unknown;
2452 }
2453 break;
2454 }
2455 }
2456
2457 void
2458 csidump(void)
2459 {
2460 int i;
2461 uint c;
2462
2463 printf("ESC[");
2464 for (i = 0; i < csiescseq.len; i++) {
2465 c = csiescseq.buf[i] & 0xff;
2466 if (isprint(c)) {
2467 putchar(c);
2468 } else if (c == '\n') {
2469 printf("(\\n)");
2470 } else if (c == '\r') {
2471 printf("(\\r)");
2472 } else if (c == 0x1b) {
2473 printf("(\\e)");
2474 } else {
2475 printf("(%02x)", c);
2476 }
2477 }
2478 putchar('\n');
2479 }
2480
2481 void
2482 csireset(void)
2483 {
2484 memset(&csiescseq, 0, sizeof(csiescseq));
2485 }
2486
2487 void
2488 strhandle(void)
2489 {
2490 char *p = NULL;
2491 int j, narg, par;
2492
2493 term.esc &= ~(ESC_STR_END|ESC_STR);
2494 strparse();
2495 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2496
2497 switch (strescseq.type) {
2498 case ']': /* OSC -- Operating System Command */
2499 switch (par) {
2500 case 0:
2501 case 1:
2502 case 2:
2503 if (narg > 1)
2504 xsettitle(strescseq.args[1]);
2505 return;
2506 case 4: /* color set */
2507 if (narg < 3)
2508 break;
2509 p = strescseq.args[2];
2510 /* FALLTHROUGH */
2511 case 104: /* color reset, here p = NULL */
2512 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2513 if (xsetcolorname(j, p)) {
2514 fprintf(stderr, "erresc: invalid color %s\n", p);
2515 } else {
2516 /*
2517 * TODO if defaultbg color is changed, borders
2518 * are dirty
2519 */
2520 redraw();
2521 }
2522 return;
2523 }
2524 break;
2525 case 'k': /* old title set compatibility */
2526 xsettitle(strescseq.args[0]);
2527 return;
2528 case 'P': /* DCS -- Device Control String */
2529 case '_': /* APC -- Application Program Command */
2530 case '^': /* PM -- Privacy Message */
2531 return;
2532 }
2533
2534 fprintf(stderr, "erresc: unknown str ");
2535 strdump();
2536 }
2537
2538 void
2539 strparse(void)
2540 {
2541 int c;
2542 char *p = strescseq.buf;
2543
2544 strescseq.narg = 0;
2545 strescseq.buf[strescseq.len] = '\0';
2546
2547 if (*p == '\0')
2548 return;
2549
2550 while (strescseq.narg < STR_ARG_SIZ) {
2551 strescseq.args[strescseq.narg++] = p;
2552 while ((c = *p) != ';' && c != '\0')
2553 ++p;
2554 if (c == '\0')
2555 return;
2556 *p++ = '\0';
2557 }
2558 }
2559
2560 void
2561 strdump(void)
2562 {
2563 int i;
2564 uint c;
2565
2566 printf("ESC%c", strescseq.type);
2567 for (i = 0; i < strescseq.len; i++) {
2568 c = strescseq.buf[i] & 0xff;
2569 if (c == '\0') {
2570 return;
2571 } else if (isprint(c)) {
2572 putchar(c);
2573 } else if (c == '\n') {
2574 printf("(\\n)");
2575 } else if (c == '\r') {
2576 printf("(\\r)");
2577 } else if (c == 0x1b) {
2578 printf("(\\e)");
2579 } else {
2580 printf("(%02x)", c);
2581 }
2582 }
2583 printf("ESC\\\n");
2584 }
2585
2586 void
2587 strreset(void)
2588 {
2589 memset(&strescseq, 0, sizeof(strescseq));
2590 }
2591
2592 void
2593 sendbreak(const Arg *arg)
2594 {
2595 if (tcsendbreak(cmdfd, 0))
2596 perror("Error sending break");
2597 }
2598
2599 void
2600 tprinter(char *s, size_t len)
2601 {
2602 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
2603 fprintf(stderr, "Error writing in %s:%s\n",
2604 opt_io, strerror(errno));
2605 close(iofd);
2606 iofd = -1;
2607 }
2608 }
2609
2610 void
2611 toggleprinter(const Arg *arg)
2612 {
2613 term.mode ^= MODE_PRINT;
2614 }
2615
2616 void
2617 printscreen(const Arg *arg)
2618 {
2619 tdump();
2620 }
2621
2622 void
2623 printsel(const Arg *arg)
2624 {
2625 tdumpsel();
2626 }
2627
2628 void
2629 tdumpsel(void)
2630 {
2631 char *ptr;
2632
2633 if ((ptr = getsel())) {
2634 tprinter(ptr, strlen(ptr));
2635 free(ptr);
2636 }
2637 }
2638
2639 void
2640 tdumpline(int n)
2641 {
2642 char buf[UTF_SIZ];
2643 Glyph *bp, *end;
2644
2645 bp = &term.line[n][0];
2646 end = &bp[MIN(tlinelen(n), term.col) - 1];
2647 if (bp != end || bp->u != ' ') {
2648 for ( ;bp <= end; ++bp)
2649 tprinter(buf, utf8encode(bp->u, buf));
2650 }
2651 tprinter("\n", 1);
2652 }
2653
2654 void
2655 tdump(void)
2656 {
2657 int i;
2658
2659 for (i = 0; i < term.row; ++i)
2660 tdumpline(i);
2661 }
2662
2663 void
2664 tputtab(int n)
2665 {
2666 uint x = term.c.x;
2667
2668 if (n > 0) {
2669 while (x < term.col && n--)
2670 for (++x; x < term.col && !term.tabs[x]; ++x)
2671 /* nothing */ ;
2672 } else if (n < 0) {
2673 while (x > 0 && n++)
2674 for (--x; x > 0 && !term.tabs[x]; --x)
2675 /* nothing */ ;
2676 }
2677 term.c.x = LIMIT(x, 0, term.col-1);
2678 }
2679
2680 void
2681 techo(Rune u)
2682 {
2683 if (ISCONTROL(u)) { /* control code */
2684 if (u & 0x80) {
2685 u &= 0x7f;
2686 tputc('^');
2687 tputc('[');
2688 } else if (u != '\n' && u != '\r' && u != '\t') {
2689 u ^= 0x40;
2690 tputc('^');
2691 }
2692 }
2693 tputc(u);
2694 }
2695
2696 void
2697 tdeftran(char ascii)
2698 {
2699 static char cs[] = "0B";
2700 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2701 char *p;
2702
2703 if ((p = strchr(cs, ascii)) == NULL) {
2704 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2705 } else {
2706 term.trantbl[term.icharset] = vcs[p - cs];
2707 }
2708 }
2709
2710 void
2711 tdectest(char c)
2712 {
2713 int x, y;
2714
2715 if (c == '8') { /* DEC screen alignment test. */
2716 for (x = 0; x < term.col; ++x) {
2717 for (y = 0; y < term.row; ++y)
2718 tsetchar('E', &term.c.attr, x, y);
2719 }
2720 }
2721 }
2722
2723 void
2724 tstrsequence(uchar c)
2725 {
2726 switch (c) {
2727 case 0x90: /* DCS -- Device Control String */
2728 c = 'P';
2729 break;
2730 case 0x9f: /* APC -- Application Program Command */
2731 c = '_';
2732 break;
2733 case 0x9e: /* PM -- Privacy Message */
2734 c = '^';
2735 break;
2736 case 0x9d: /* OSC -- Operating System Command */
2737 c = ']';
2738 break;
2739 }
2740 strreset();
2741 strescseq.type = c;
2742 term.esc |= ESC_STR;
2743 }
2744
2745 void
2746 tcontrolcode(uchar ascii)
2747 {
2748 switch (ascii) {
2749 case '\t': /* HT */
2750 tputtab(1);
2751 return;
2752 case '\b': /* BS */
2753 tmoveto(term.c.x-1, term.c.y);
2754 return;
2755 case '\r': /* CR */
2756 tmoveto(0, term.c.y);
2757 return;
2758 case '\f': /* LF */
2759 case '\v': /* VT */
2760 case '\n': /* LF */
2761 /* go to first col if the mode is set */
2762 tnewline(IS_SET(MODE_CRLF));
2763 return;
2764 case '\a': /* BEL */
2765 if (term.esc & ESC_STR_END) {
2766 /* backwards compatibility to xterm */
2767 strhandle();
2768 } else {
2769 if (!(xw.state & WIN_FOCUSED))
2770 xseturgency(1);
2771 if (bellvolume)
2772 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2773 }
2774 break;
2775 case '\033': /* ESC */
2776 csireset();
2777 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2778 term.esc |= ESC_START;
2779 return;
2780 case '\016': /* SO (LS1 -- Locking shift 1) */
2781 case '\017': /* SI (LS0 -- Locking shift 0) */
2782 term.charset = 1 - (ascii - '\016');
2783 return;
2784 case '\032': /* SUB */
2785 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2786 case '\030': /* CAN */
2787 csireset();
2788 break;
2789 case '\005': /* ENQ (IGNORED) */
2790 case '\000': /* NUL (IGNORED) */
2791 case '\021': /* XON (IGNORED) */
2792 case '\023': /* XOFF (IGNORED) */
2793 case 0177: /* DEL (IGNORED) */
2794 return;
2795 case 0x80: /* TODO: PAD */
2796 case 0x81: /* TODO: HOP */
2797 case 0x82: /* TODO: BPH */
2798 case 0x83: /* TODO: NBH */
2799 case 0x84: /* TODO: IND */
2800 break;
2801 case 0x85: /* NEL -- Next line */
2802 tnewline(1); /* always go to first col */
2803 break;
2804 case 0x86: /* TODO: SSA */
2805 case 0x87: /* TODO: ESA */
2806 break;
2807 case 0x88: /* HTS -- Horizontal tab stop */
2808 term.tabs[term.c.x] = 1;
2809 break;
2810 case 0x89: /* TODO: HTJ */
2811 case 0x8a: /* TODO: VTS */
2812 case 0x8b: /* TODO: PLD */
2813 case 0x8c: /* TODO: PLU */
2814 case 0x8d: /* TODO: RI */
2815 case 0x8e: /* TODO: SS2 */
2816 case 0x8f: /* TODO: SS3 */
2817 case 0x91: /* TODO: PU1 */
2818 case 0x92: /* TODO: PU2 */
2819 case 0x93: /* TODO: STS */
2820 case 0x94: /* TODO: CCH */
2821 case 0x95: /* TODO: MW */
2822 case 0x96: /* TODO: SPA */
2823 case 0x97: /* TODO: EPA */
2824 case 0x98: /* TODO: SOS */
2825 case 0x99: /* TODO: SGCI */
2826 break;
2827 case 0x9a: /* DECID -- Identify Terminal */
2828 ttywrite(vtiden, sizeof(vtiden) - 1);
2829 break;
2830 case 0x9b: /* TODO: CSI */
2831 case 0x9c: /* TODO: ST */
2832 break;
2833 case 0x90: /* DCS -- Device Control String */
2834 case 0x9d: /* OSC -- Operating System Command */
2835 case 0x9e: /* PM -- Privacy Message */
2836 case 0x9f: /* APC -- Application Program Command */
2837 tstrsequence(ascii);
2838 return;
2839 }
2840 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2841 term.esc &= ~(ESC_STR_END|ESC_STR);
2842 }
2843
2844 /*
2845 * returns 1 when the sequence is finished and it hasn't to read
2846 * more characters for this sequence, otherwise 0
2847 */
2848 int
2849 eschandle(uchar ascii)
2850 {
2851 switch (ascii) {
2852 case '[':
2853 term.esc |= ESC_CSI;
2854 return 0;
2855 case '#':
2856 term.esc |= ESC_TEST;
2857 return 0;
2858 case 'P': /* DCS -- Device Control String */
2859 case '_': /* APC -- Application Program Command */
2860 case '^': /* PM -- Privacy Message */
2861 case ']': /* OSC -- Operating System Command */
2862 case 'k': /* old title set compatibility */
2863 tstrsequence(ascii);
2864 return 0;
2865 case 'n': /* LS2 -- Locking shift 2 */
2866 case 'o': /* LS3 -- Locking shift 3 */
2867 term.charset = 2 + (ascii - 'n');
2868 break;
2869 case '(': /* GZD4 -- set primary charset G0 */
2870 case ')': /* G1D4 -- set secondary charset G1 */
2871 case '*': /* G2D4 -- set tertiary charset G2 */
2872 case '+': /* G3D4 -- set quaternary charset G3 */
2873 term.icharset = ascii - '(';
2874 term.esc |= ESC_ALTCHARSET;
2875 return 0;
2876 case 'D': /* IND -- Linefeed */
2877 if (term.c.y == term.bot) {
2878 tscrollup(term.top, 1);
2879 } else {
2880 tmoveto(term.c.x, term.c.y+1);
2881 }
2882 break;
2883 case 'E': /* NEL -- Next line */
2884 tnewline(1); /* always go to first col */
2885 break;
2886 case 'H': /* HTS -- Horizontal tab stop */
2887 term.tabs[term.c.x] = 1;
2888 break;
2889 case 'M': /* RI -- Reverse index */
2890 if (term.c.y == term.top) {
2891 tscrolldown(term.top, 1);
2892 } else {
2893 tmoveto(term.c.x, term.c.y-1);
2894 }
2895 break;
2896 case 'Z': /* DECID -- Identify Terminal */
2897 ttywrite(vtiden, sizeof(vtiden) - 1);
2898 break;
2899 case 'c': /* RIS -- Reset to inital state */
2900 treset();
2901 xresettitle();
2902 xloadcols();
2903 break;
2904 case '=': /* DECPAM -- Application keypad */
2905 term.mode |= MODE_APPKEYPAD;
2906 break;
2907 case '>': /* DECPNM -- Normal keypad */
2908 term.mode &= ~MODE_APPKEYPAD;
2909 break;
2910 case '7': /* DECSC -- Save Cursor */
2911 tcursor(CURSOR_SAVE);
2912 break;
2913 case '8': /* DECRC -- Restore Cursor */
2914 tcursor(CURSOR_LOAD);
2915 break;
2916 case '\\': /* ST -- String Terminator */
2917 if (term.esc & ESC_STR_END)
2918 strhandle();
2919 break;
2920 default:
2921 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2922 (uchar) ascii, isprint(ascii)? ascii:'.');
2923 break;
2924 }
2925 return 1;
2926 }
2927
2928 void
2929 tputc(Rune u)
2930 {
2931 char c[UTF_SIZ];
2932 int control;
2933 int width, len;
2934 Glyph *gp;
2935
2936 control = ISCONTROL(u);
2937 len = utf8encode(u, c);
2938 if (!control && (width = wcwidth(u)) == -1) {
2939 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
2940 width = 1;
2941 }
2942
2943 if (IS_SET(MODE_PRINT))
2944 tprinter(c, len);
2945
2946 /*
2947 * STR sequence must be checked before anything else
2948 * because it uses all following characters until it
2949 * receives a ESC, a SUB, a ST or any other C1 control
2950 * character.
2951 */
2952 if (term.esc & ESC_STR) {
2953 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
2954 ISCONTROLC1(u)) {
2955 term.esc &= ~(ESC_START|ESC_STR);
2956 term.esc |= ESC_STR_END;
2957 } else if (strescseq.len + len < sizeof(strescseq.buf) - 1) {
2958 memmove(&strescseq.buf[strescseq.len], c, len);
2959 strescseq.len += len;
2960 return;
2961 } else {
2962 /*
2963 * Here is a bug in terminals. If the user never sends
2964 * some code to stop the str or esc command, then st
2965 * will stop responding. But this is better than
2966 * silently failing with unknown characters. At least
2967 * then users will report back.
2968 *
2969 * In the case users ever get fixed, here is the code:
2970 */
2971 /*
2972 * term.esc = 0;
2973 * strhandle();
2974 */
2975 return;
2976 }
2977 }
2978
2979 /*
2980 * Actions of control codes must be performed as soon they arrive
2981 * because they can be embedded inside a control sequence, and
2982 * they must not cause conflicts with sequences.
2983 */
2984 if (control) {
2985 tcontrolcode(u);
2986 /*
2987 * control codes are not shown ever
2988 */
2989 return;
2990 } else if (term.esc & ESC_START) {
2991 if (term.esc & ESC_CSI) {
2992 csiescseq.buf[csiescseq.len++] = u;
2993 if (BETWEEN(u, 0x40, 0x7E)
2994 || csiescseq.len >= \
2995 sizeof(csiescseq.buf)-1) {
2996 term.esc = 0;
2997 csiparse();
2998 csihandle();
2999 }
3000 return;
3001 } else if (term.esc & ESC_ALTCHARSET) {
3002 tdeftran(u);
3003 } else if (term.esc & ESC_TEST) {
3004 tdectest(u);
3005 } else {
3006 if (!eschandle(u))
3007 return;
3008 /* sequence already finished */
3009 }
3010 term.esc = 0;
3011 /*
3012 * All characters which form part of a sequence are not
3013 * printed
3014 */
3015 return;
3016 }
3017 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
3018 selclear(NULL);
3019
3020 gp = &term.line[term.c.y][term.c.x];
3021 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
3022 gp->mode |= ATTR_WRAP;
3023 tnewline(1);
3024 gp = &term.line[term.c.y][term.c.x];
3025 }
3026
3027 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
3028 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
3029
3030 if (term.c.x+width > term.col) {
3031 tnewline(1);
3032 gp = &term.line[term.c.y][term.c.x];
3033 }
3034
3035 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
3036
3037 if (width == 2) {
3038 gp->mode |= ATTR_WIDE;
3039 if (term.c.x+1 < term.col) {
3040 gp[1].u = '\0';
3041 gp[1].mode = ATTR_WDUMMY;
3042 }
3043 }
3044 if (term.c.x+width < term.col) {
3045 tmoveto(term.c.x+width, term.c.y);
3046 } else {
3047 term.c.state |= CURSOR_WRAPNEXT;
3048 }
3049 }
3050
3051 void
3052 tresize(int col, int row)
3053 {
3054 int i;
3055 int minrow = MIN(row, term.row);
3056 int mincol = MIN(col, term.col);
3057 int *bp;
3058 TCursor c;
3059
3060 if (col < 1 || row < 1) {
3061 fprintf(stderr,
3062 "tresize: error resizing to %dx%d\n", col, row);
3063 return;
3064 }
3065
3066 /*
3067 * slide screen to keep cursor where we expect it -
3068 * tscrollup would work here, but we can optimize to
3069 * memmove because we're freeing the earlier lines
3070 */
3071 for (i = 0; i <= term.c.y - row; i++) {
3072 free(term.line[i]);
3073 free(term.alt[i]);
3074 }
3075 /* ensure that both src and dst are not NULL */
3076 if (i > 0) {
3077 memmove(term.line, term.line + i, row * sizeof(Line));
3078 memmove(term.alt, term.alt + i, row * sizeof(Line));
3079 }
3080 for (i += row; i < term.row; i++) {
3081 free(term.line[i]);
3082 free(term.alt[i]);
3083 }
3084
3085 /* resize to new width */
3086 term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
3087
3088 /* resize to new height */
3089 term.line = xrealloc(term.line, row * sizeof(Line));
3090 term.alt = xrealloc(term.alt, row * sizeof(Line));
3091 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
3092 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
3093
3094 /* resize each row to new width, zero-pad if needed */
3095 for (i = 0; i < minrow; i++) {
3096 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
3097 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
3098 }
3099
3100 /* allocate any new rows */
3101 for (/* i == minrow */; i < row; i++) {
3102 term.line[i] = xmalloc(col * sizeof(Glyph));
3103 term.alt[i] = xmalloc(col * sizeof(Glyph));
3104 }
3105 if (col > term.col) {
3106 bp = term.tabs + term.col;
3107
3108 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
3109 while (--bp > term.tabs && !*bp)
3110 /* nothing */ ;
3111 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
3112 *bp = 1;
3113 }
3114 /* update terminal size */
3115 term.col = col;
3116 term.row = row;
3117 /* reset scrolling region */
3118 tsetscroll(0, row-1);
3119 /* make use of the LIMIT in tmoveto */
3120 tmoveto(term.c.x, term.c.y);
3121 /* Clearing both screens (it makes dirty all lines) */
3122 c = term.c;
3123 for (i = 0; i < 2; i++) {
3124 if (mincol < col && 0 < minrow) {
3125 tclearregion(mincol, 0, col - 1, minrow - 1);
3126 }
3127 if (0 < col && minrow < row) {
3128 tclearregion(0, minrow, col - 1, row - 1);
3129 }
3130 tswapscreen();
3131 tcursor(CURSOR_LOAD);
3132 }
3133 term.c = c;
3134 }
3135
3136 void
3137 xresize(int col, int row)
3138 {
3139 xw.tw = MAX(1, col * xw.cw);
3140 xw.th = MAX(1, row * xw.ch);
3141
3142 XFreePixmap(xw.dpy, xw.buf);
3143 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3144 DefaultDepth(xw.dpy, xw.scr));
3145 XftDrawChange(xw.draw, xw.buf);
3146 xclear(0, 0, xw.w, xw.h);
3147 }
3148
3149 ushort
3150 sixd_to_16bit(int x)
3151 {
3152 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
3153 }
3154
3155 int
3156 xloadcolor(int i, const char *name, Color *ncolor)
3157 {
3158 XRenderColor color = { .alpha = 0xffff };
3159
3160 if (!name) {
3161 if (BETWEEN(i, 16, 255)) { /* 256 color */
3162 if (i < 6*6*6+16) { /* same colors as xterm */
3163 color.red = sixd_to_16bit( ((i-16)/36)%6 );
3164 color.green = sixd_to_16bit( ((i-16)/6) %6 );
3165 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
3166 } else { /* greyscale */
3167 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
3168 color.green = color.blue = color.red;
3169 }
3170 return XftColorAllocValue(xw.dpy, xw.vis,
3171 xw.cmap, &color, ncolor);
3172 } else
3173 name = colorname[i];
3174 }
3175
3176 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
3177 }
3178
3179 void
3180 xloadcols(void)
3181 {
3182 int i;
3183 static int loaded;
3184 Color *cp;
3185
3186 if (loaded) {
3187 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
3188 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
3189 }
3190
3191 for (i = 0; i < LEN(dc.col); i++)
3192 if (!xloadcolor(i, NULL, &dc.col[i])) {
3193 if (colorname[i])
3194 die("Could not allocate color '%s'\n", colorname[i]);
3195 else
3196 die("Could not allocate color %d\n", i);
3197 }
3198 loaded = 1;
3199 }
3200
3201 int
3202 xsetcolorname(int x, const char *name)
3203 {
3204 Color ncolor;
3205
3206 if (!BETWEEN(x, 0, LEN(dc.col)))
3207 return 1;
3208
3209
3210 if (!xloadcolor(x, name, &ncolor))
3211 return 1;
3212
3213 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
3214 dc.col[x] = ncolor;
3215
3216 return 0;
3217 }
3218
3219 void
3220 xtermclear(int col1, int row1, int col2, int row2)
3221 {
3222 XftDrawRect(xw.draw,
3223 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
3224 borderpx + col1 * xw.cw,
3225 borderpx + row1 * xw.ch,
3226 (col2-col1+1) * xw.cw,
3227 (row2-row1+1) * xw.ch);
3228 }
3229
3230 /*
3231 * Absolute coordinates.
3232 */
3233 void
3234 xclear(int x1, int y1, int x2, int y2)
3235 {
3236 XftDrawRect(xw.draw,
3237 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
3238 x1, y1, x2-x1, y2-y1);
3239 }
3240
3241 void
3242 xhints(void)
3243 {
3244 XClassHint class = {opt_name ? opt_name : termname,
3245 opt_class ? opt_class : termname};
3246 XWMHints wm = {.flags = InputHint, .input = 1};
3247 XSizeHints *sizeh = NULL;
3248
3249 sizeh = XAllocSizeHints();
3250
3251 sizeh->flags = PSize | PResizeInc | PBaseSize;
3252 sizeh->height = xw.h;
3253 sizeh->width = xw.w;
3254 sizeh->height_inc = xw.ch;
3255 sizeh->width_inc = xw.cw;
3256 sizeh->base_height = 2 * borderpx;
3257 sizeh->base_width = 2 * borderpx;
3258 if (xw.isfixed) {
3259 sizeh->flags |= PMaxSize | PMinSize;
3260 sizeh->min_width = sizeh->max_width = xw.w;
3261 sizeh->min_height = sizeh->max_height = xw.h;
3262 }
3263 if (xw.gm & (XValue|YValue)) {
3264 sizeh->flags |= USPosition | PWinGravity;
3265 sizeh->x = xw.l;
3266 sizeh->y = xw.t;
3267 sizeh->win_gravity = xgeommasktogravity(xw.gm);
3268 }
3269
3270 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
3271 &class);
3272 XFree(sizeh);
3273 }
3274
3275 int
3276 xgeommasktogravity(int mask)
3277 {
3278 switch (mask & (XNegative|YNegative)) {
3279 case 0:
3280 return NorthWestGravity;
3281 case XNegative:
3282 return NorthEastGravity;
3283 case YNegative:
3284 return SouthWestGravity;
3285 }
3286
3287 return SouthEastGravity;
3288 }
3289
3290 int
3291 xloadfont(Font *f, FcPattern *pattern)
3292 {
3293 FcPattern *match;
3294 FcResult result;
3295
3296 match = FcFontMatch(NULL, pattern, &result);
3297 if (!match)
3298 return 1;
3299
3300 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3301 FcPatternDestroy(match);
3302 return 1;
3303 }
3304
3305 f->set = NULL;
3306 f->pattern = FcPatternDuplicate(pattern);
3307
3308 f->ascent = f->match->ascent;
3309 f->descent = f->match->descent;
3310 f->lbearing = 0;
3311 f->rbearing = f->match->max_advance_width;
3312
3313 f->height = f->ascent + f->descent;
3314 f->width = f->lbearing + f->rbearing;
3315
3316 return 0;
3317 }
3318
3319 void
3320 xloadfonts(char *fontstr, double fontsize)
3321 {
3322 FcPattern *pattern;
3323 double fontval;
3324 float ceilf(float);
3325
3326 if (fontstr[0] == '-') {
3327 pattern = XftXlfdParse(fontstr, False, False);
3328 } else {
3329 pattern = FcNameParse((FcChar8 *)fontstr);
3330 }
3331
3332 if (!pattern)
3333 die("st: can't open font %s\n", fontstr);
3334
3335 if (fontsize > 1) {
3336 FcPatternDel(pattern, FC_PIXEL_SIZE);
3337 FcPatternDel(pattern, FC_SIZE);
3338 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3339 usedfontsize = fontsize;
3340 } else {
3341 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
3342 FcResultMatch) {
3343 usedfontsize = fontval;
3344 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
3345 FcResultMatch) {
3346 usedfontsize = -1;
3347 } else {
3348 /*
3349 * Default font size is 12, if none given. This is to
3350 * have a known usedfontsize value.
3351 */
3352 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3353 usedfontsize = 12;
3354 }
3355 defaultfontsize = usedfontsize;
3356 }
3357
3358 FcConfigSubstitute(0, pattern, FcMatchPattern);
3359 FcDefaultSubstitute(pattern);
3360
3361 if (xloadfont(&dc.font, pattern))
3362 die("st: can't open font %s\n", fontstr);
3363
3364 if (usedfontsize < 0) {
3365 FcPatternGetDouble(dc.font.match->pattern,
3366 FC_PIXEL_SIZE, 0, &fontval);
3367 usedfontsize = fontval;
3368 if (fontsize == 0)
3369 defaultfontsize = fontval;
3370 }
3371
3372 /* Setting character width and height. */
3373 xw.cw = ceilf(dc.font.width * cwscale);
3374 xw.ch = ceilf(dc.font.height * chscale);
3375
3376 FcPatternDel(pattern, FC_SLANT);
3377 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3378 if (xloadfont(&dc.ifont, pattern))
3379 die("st: can't open font %s\n", fontstr);
3380
3381 FcPatternDel(pattern, FC_WEIGHT);
3382 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3383 if (xloadfont(&dc.ibfont, pattern))
3384 die("st: can't open font %s\n", fontstr);
3385
3386 FcPatternDel(pattern, FC_SLANT);
3387 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3388 if (xloadfont(&dc.bfont, pattern))
3389 die("st: can't open font %s\n", fontstr);
3390
3391 FcPatternDestroy(pattern);
3392 }
3393
3394 void
3395 xunloadfont(Font *f)
3396 {
3397 XftFontClose(xw.dpy, f->match);
3398 FcPatternDestroy(f->pattern);
3399 if (f->set)
3400 FcFontSetDestroy(f->set);
3401 }
3402
3403 void
3404 xunloadfonts(void)
3405 {
3406 /* Free the loaded fonts in the font cache. */
3407 while (frclen > 0)
3408 XftFontClose(xw.dpy, frc[--frclen].font);
3409
3410 xunloadfont(&dc.font);
3411 xunloadfont(&dc.bfont);
3412 xunloadfont(&dc.ifont);
3413 xunloadfont(&dc.ibfont);
3414 }
3415
3416 void
3417 xzoom(const Arg *arg)
3418 {
3419 Arg larg;
3420
3421 larg.f = usedfontsize + arg->f;
3422 xzoomabs(&larg);
3423 }
3424
3425 void
3426 xzoomabs(const Arg *arg)
3427 {
3428 xunloadfonts();
3429 xloadfonts(usedfont, arg->f);
3430 cresize(0, 0);
3431 redraw();
3432 xhints();
3433 }
3434
3435 void
3436 xzoomreset(const Arg *arg)
3437 {
3438 Arg larg;
3439
3440 if (defaultfontsize > 0) {
3441 larg.f = defaultfontsize;
3442 xzoomabs(&larg);
3443 }
3444 }
3445
3446 void
3447 xinit(void)
3448 {
3449 XGCValues gcvalues;
3450 Cursor cursor;
3451 Window parent;
3452 pid_t thispid = getpid();
3453 XColor xmousefg, xmousebg;
3454
3455 if (!(xw.dpy = XOpenDisplay(NULL)))
3456 die("Can't open display\n");
3457 xw.scr = XDefaultScreen(xw.dpy);
3458 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3459
3460 /* font */
3461 if (!FcInit())
3462 die("Could not init fontconfig.\n");
3463
3464 usedfont = (opt_font == NULL)? font : opt_font;
3465 xloadfonts(usedfont, 0);
3466
3467 /* colors */
3468 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3469 xloadcols();
3470
3471 /* adjust fixed window geometry */
3472 xw.w = 2 * borderpx + term.col * xw.cw;
3473 xw.h = 2 * borderpx + term.row * xw.ch;
3474 if (xw.gm & XNegative)
3475 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3476 if (xw.gm & YNegative)
3477 xw.t += DisplayHeight(xw.dpy, xw.scr) - xw.h - 2;
3478
3479 /* Events */
3480 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3481 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3482 xw.attrs.bit_gravity = NorthWestGravity;
3483 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3484 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3485 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3486 xw.attrs.colormap = xw.cmap;
3487
3488 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
3489 parent = XRootWindow(xw.dpy, xw.scr);
3490 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3491 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3492 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3493 | CWEventMask | CWColormap, &xw.attrs);
3494
3495 memset(&gcvalues, 0, sizeof(gcvalues));
3496 gcvalues.graphics_exposures = False;
3497 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3498 &gcvalues);
3499 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3500 DefaultDepth(xw.dpy, xw.scr));
3501 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3502 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3503
3504 /* Xft rendering context */
3505 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3506
3507 /* input methods */
3508 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3509 XSetLocaleModifiers("@im=local");
3510 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3511 XSetLocaleModifiers("@im=");
3512 if ((xw.xim = XOpenIM(xw.dpy,
3513 NULL, NULL, NULL)) == NULL) {
3514 die("XOpenIM failed. Could not open input"
3515 " device.\n");
3516 }
3517 }
3518 }
3519 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3520 | XIMStatusNothing, XNClientWindow, xw.win,
3521 XNFocusWindow, xw.win, NULL);
3522 if (xw.xic == NULL)
3523 die("XCreateIC failed. Could not obtain input method.\n");
3524
3525 /* white cursor, black outline */
3526 cursor = XCreateFontCursor(xw.dpy, mouseshape);
3527 XDefineCursor(xw.dpy, xw.win, cursor);
3528
3529 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
3530 xmousefg.red = 0xffff;
3531 xmousefg.green = 0xffff;
3532 xmousefg.blue = 0xffff;
3533 }
3534
3535 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
3536 xmousebg.red = 0x0000;
3537 xmousebg.green = 0x0000;
3538 xmousebg.blue = 0x0000;
3539 }
3540
3541 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
3542
3543 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3544 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3545 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3546 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3547
3548 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3549 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3550 PropModeReplace, (uchar *)&thispid, 1);
3551
3552 xresettitle();
3553 XMapWindow(xw.dpy, xw.win);
3554 xhints();
3555 XSync(xw.dpy, False);
3556 }
3557
3558 int
3559 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
3560 {
3561 float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
3562 ushort mode, prevmode = USHRT_MAX;
3563 Font *font = &dc.font;
3564 int frcflags = FRC_NORMAL;
3565 float runewidth = xw.cw;
3566 Rune rune;
3567 FT_UInt glyphidx;
3568 FcResult fcres;
3569 FcPattern *fcpattern, *fontpattern;
3570 FcFontSet *fcsets[] = { NULL };
3571 FcCharSet *fccharset;
3572 int i, f, numspecs = 0;
3573
3574 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
3575 /* Fetch rune and mode for current glyph. */
3576 rune = glyphs[i].u;
3577 mode = glyphs[i].mode;
3578
3579 /* Skip dummy wide-character spacing. */
3580 if (mode == ATTR_WDUMMY)
3581 continue;
3582
3583 /* Determine font for glyph if different from previous glyph. */
3584 if (prevmode != mode) {
3585 prevmode = mode;
3586 font = &dc.font;
3587 frcflags = FRC_NORMAL;
3588 runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
3589 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
3590 font = &dc.ibfont;
3591 frcflags = FRC_ITALICBOLD;
3592 } else if (mode & ATTR_ITALIC) {
3593 font = &dc.ifont;
3594 frcflags = FRC_ITALIC;
3595 } else if (mode & ATTR_BOLD) {
3596 font = &dc.bfont;
3597 frcflags = FRC_BOLD;
3598 }
3599 yp = winy + font->ascent;
3600 }
3601
3602 /* Lookup character index with default font. */
3603 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
3604 if (glyphidx) {
3605 specs[numspecs].font = font->match;
3606 specs[numspecs].glyph = glyphidx;
3607 specs[numspecs].x = (short)xp;
3608 specs[numspecs].y = (short)yp;
3609 xp += runewidth;
3610 numspecs++;
3611 continue;
3612 }
3613
3614 /* Fallback on font cache, search the font cache for match. */
3615 for (f = 0; f < frclen; f++) {
3616 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
3617 /* Everything correct. */
3618 if (glyphidx && frc[f].flags == frcflags)
3619 break;
3620 /* We got a default font for a not found glyph. */
3621 if (!glyphidx && frc[f].flags == frcflags
3622 && frc[f].unicodep == rune) {
3623 break;
3624 }
3625 }
3626
3627 /* Nothing was found. Use fontconfig to find matching font. */
3628 if (f >= frclen) {
3629 if (!font->set)
3630 font->set = FcFontSort(0, font->pattern,
3631 1, 0, &fcres);
3632 fcsets[0] = font->set;
3633
3634 /*
3635 * Nothing was found in the cache. Now use
3636 * some dozen of Fontconfig calls to get the
3637 * font for one single character.
3638 *
3639 * Xft and fontconfig are design failures.
3640 */
3641 fcpattern = FcPatternDuplicate(font->pattern);
3642 fccharset = FcCharSetCreate();
3643
3644 FcCharSetAddChar(fccharset, rune);
3645 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3646 fccharset);
3647 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
3648
3649 FcConfigSubstitute(0, fcpattern,
3650 FcMatchPattern);
3651 FcDefaultSubstitute(fcpattern);
3652
3653 fontpattern = FcFontSetMatch(0, fcsets, 1,
3654 fcpattern, &fcres);
3655
3656 /*
3657 * Overwrite or create the new cache entry.
3658 */
3659 if (frclen >= LEN(frc)) {
3660 frclen = LEN(frc) - 1;
3661 XftFontClose(xw.dpy, frc[frclen].font);
3662 frc[frclen].unicodep = 0;
3663 }
3664
3665 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3666 fontpattern);
3667 frc[frclen].flags = frcflags;
3668 frc[frclen].unicodep = rune;
3669
3670 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
3671
3672 f = frclen;
3673 frclen++;
3674
3675 FcPatternDestroy(fcpattern);
3676 FcCharSetDestroy(fccharset);
3677 }
3678
3679 specs[numspecs].font = frc[f].font;
3680 specs[numspecs].glyph = glyphidx;
3681 specs[numspecs].x = (short)xp;
3682 specs[numspecs].y = (short)(winy + frc[f].font->ascent);
3683 xp += runewidth;
3684 numspecs++;
3685 }
3686
3687 return numspecs;
3688 }
3689
3690 void
3691 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
3692 {
3693 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
3694 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3695 width = charlen * xw.cw;
3696 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3697 XRenderColor colfg, colbg;
3698 XRectangle r;
3699
3700 /* Determine foreground and background colors based on mode. */
3701 if (base.fg == defaultfg) {
3702 if (base.mode & ATTR_ITALIC)
3703 base.fg = defaultitalic;
3704 else if ((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
3705 base.fg = defaultitalic;
3706 else if (base.mode & ATTR_UNDERLINE)
3707 base.fg = defaultunderline;
3708 }
3709
3710 if (IS_TRUECOL(base.fg)) {
3711 colfg.alpha = 0xffff;
3712 colfg.red = TRUERED(base.fg);
3713 colfg.green = TRUEGREEN(base.fg);
3714 colfg.blue = TRUEBLUE(base.fg);
3715 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3716 fg = &truefg;
3717 } else {
3718 fg = &dc.col[base.fg];
3719 }
3720
3721 if (IS_TRUECOL(base.bg)) {
3722 colbg.alpha = 0xffff;
3723 colbg.green = TRUEGREEN(base.bg);
3724 colbg.red = TRUERED(base.bg);
3725 colbg.blue = TRUEBLUE(base.bg);
3726 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3727 bg = &truebg;
3728 } else {
3729 bg = &dc.col[base.bg];
3730 }
3731
3732 /* Change basic system colors [0-7] to bright system colors [8-15] */
3733 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
3734 fg = &dc.col[base.fg + 8];
3735
3736 if (IS_SET(MODE_REVERSE)) {
3737 if (fg == &dc.col[defaultfg]) {
3738 fg = &dc.col[defaultbg];
3739 } else {
3740 colfg.red = ~fg->color.red;
3741 colfg.green = ~fg->color.green;
3742 colfg.blue = ~fg->color.blue;
3743 colfg.alpha = fg->color.alpha;
3744 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3745 &revfg);
3746 fg = &revfg;
3747 }
3748
3749 if (bg == &dc.col[defaultbg]) {
3750 bg = &dc.col[defaultfg];
3751 } else {
3752 colbg.red = ~bg->color.red;
3753 colbg.green = ~bg->color.green;
3754 colbg.blue = ~bg->color.blue;
3755 colbg.alpha = bg->color.alpha;
3756 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3757 &revbg);
3758 bg = &revbg;
3759 }
3760 }
3761
3762 if (base.mode & ATTR_REVERSE) {
3763 temp = fg;
3764 fg = bg;
3765 bg = temp;
3766 }
3767
3768 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
3769 colfg.red = fg->color.red / 2;
3770 colfg.green = fg->color.green / 2;
3771 colfg.blue = fg->color.blue / 2;
3772 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3773 fg = &revfg;
3774 }
3775
3776 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3777 fg = bg;
3778
3779 if (base.mode & ATTR_INVISIBLE)
3780 fg = bg;
3781
3782 /* Intelligent cleaning up of the borders. */
3783 if (x == 0) {
3784 xclear(0, (y == 0)? 0 : winy, borderpx,
3785 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3786 }
3787 if (x + charlen >= term.col) {
3788 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3789 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3790 }
3791 if (y == 0)
3792 xclear(winx, 0, winx + width, borderpx);
3793 if (y == term.row-1)
3794 xclear(winx, winy + xw.ch, winx + width, xw.h);
3795
3796 /* Clean up the region we want to draw to. */
3797 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3798
3799 /* Set the clip region because Xft is sometimes dirty. */
3800 r.x = 0;
3801 r.y = 0;
3802 r.height = xw.ch;
3803 r.width = width;
3804 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3805
3806 /* Render the glyphs. */
3807 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
3808
3809 /* Render underline and strikethrough. */
3810 if (base.mode & ATTR_UNDERLINE) {
3811 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
3812 width, 1);
3813 }
3814
3815 if (base.mode & ATTR_STRUCK) {
3816 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
3817 width, 1);
3818 }
3819
3820 /* Reset clip to none. */
3821 XftDrawSetClip(xw.draw, 0);
3822 }
3823
3824 void
3825 xdrawglyph(Glyph g, int x, int y)
3826 {
3827 int numspecs;
3828 XftGlyphFontSpec spec;
3829
3830 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
3831 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
3832 }
3833
3834 void
3835 xdrawcursor(void)
3836 {
3837 static int oldx = 0, oldy = 0;
3838 int curx;
3839 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
3840 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3841 Color drawcol;
3842
3843 LIMIT(oldx, 0, term.col-1);
3844 LIMIT(oldy, 0, term.row-1);
3845
3846 curx = term.c.x;
3847
3848 /* adjust position if in dummy */
3849 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
3850 oldx--;
3851 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3852 curx--;
3853
3854 /* remove the old cursor */
3855 og = term.line[oldy][oldx];
3856 if (ena_sel && selected(oldx, oldy))
3857 og.mode ^= ATTR_REVERSE;
3858 xdrawglyph(og, oldx, oldy);
3859
3860 g.u = term.line[term.c.y][term.c.x].u;
3861
3862 /*
3863 * Select the right color for the right mode.
3864 */
3865 if (IS_SET(MODE_REVERSE)) {
3866 g.mode |= ATTR_REVERSE;
3867 g.bg = defaultfg;
3868 if (ena_sel && selected(term.c.x, term.c.y)) {
3869 drawcol = dc.col[defaultcs];
3870 g.fg = defaultrcs;
3871 } else {
3872 drawcol = dc.col[defaultrcs];
3873 g.fg = defaultcs;
3874 }
3875 } else {
3876 if (ena_sel && selected(term.c.x, term.c.y)) {
3877 drawcol = dc.col[defaultrcs];
3878 g.fg = defaultfg;
3879 g.bg = defaultrcs;
3880 } else {
3881 drawcol = dc.col[defaultcs];
3882 }
3883 }
3884
3885 if (IS_SET(MODE_HIDE))
3886 return;
3887
3888 /* draw the new one */
3889 if (xw.state & WIN_FOCUSED) {
3890 switch (xw.cursor) {
3891 case 7: /* st extension: snowman */
3892 utf8decode("☃", &g.u, UTF_SIZ);
3893 case 0: /* Blinking Block */
3894 case 1: /* Blinking Block (Default) */
3895 case 2: /* Steady Block */
3896 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
3897 xdrawglyph(g, term.c.x, term.c.y);
3898 break;
3899 case 3: /* Blinking Underline */
3900 case 4: /* Steady Underline */
3901 XftDrawRect(xw.draw, &drawcol,
3902 borderpx + curx * xw.cw,
3903 borderpx + (term.c.y + 1) * xw.ch - \
3904 cursorthickness,
3905 xw.cw, cursorthickness);
3906 break;
3907 case 5: /* Blinking bar */
3908 case 6: /* Steady bar */
3909 XftDrawRect(xw.draw, &drawcol,
3910 borderpx + curx * xw.cw,
3911 borderpx + term.c.y * xw.ch,
3912 cursorthickness, xw.ch);
3913 break;
3914 }
3915 } else {
3916 XftDrawRect(xw.draw, &drawcol,
3917 borderpx + curx * xw.cw,
3918 borderpx + term.c.y * xw.ch,
3919 xw.cw - 1, 1);
3920 XftDrawRect(xw.draw, &drawcol,
3921 borderpx + curx * xw.cw,
3922 borderpx + term.c.y * xw.ch,
3923 1, xw.ch - 1);
3924 XftDrawRect(xw.draw, &drawcol,
3925 borderpx + (curx + 1) * xw.cw - 1,
3926 borderpx + term.c.y * xw.ch,
3927 1, xw.ch - 1);
3928 XftDrawRect(xw.draw, &drawcol,
3929 borderpx + curx * xw.cw,
3930 borderpx + (term.c.y + 1) * xw.ch - 1,
3931 xw.cw, 1);
3932 }
3933 oldx = curx, oldy = term.c.y;
3934 }
3935
3936
3937 void
3938 xsettitle(char *p)
3939 {
3940 XTextProperty prop;
3941
3942 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3943 &prop);
3944 XSetWMName(xw.dpy, xw.win, &prop);
3945 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3946 XFree(prop.value);
3947 }
3948
3949 void
3950 xresettitle(void)
3951 {
3952 xsettitle(opt_title ? opt_title : "st");
3953 }
3954
3955 void
3956 redraw(void)
3957 {
3958 tfulldirt();
3959 draw();
3960 }
3961
3962 void
3963 draw(void)
3964 {
3965 drawregion(0, 0, term.col, term.row);
3966 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3967 xw.h, 0, 0);
3968 XSetForeground(xw.dpy, dc.gc,
3969 dc.col[IS_SET(MODE_REVERSE)?
3970 defaultfg : defaultbg].pixel);
3971 }
3972
3973 void
3974 drawregion(int x1, int y1, int x2, int y2)
3975 {
3976 int i, x, y, ox, numspecs;
3977 Glyph base, new;
3978 XftGlyphFontSpec *specs;
3979 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3980
3981 if (!(xw.state & WIN_VISIBLE))
3982 return;
3983
3984 for (y = y1; y < y2; y++) {
3985 if (!term.dirty[y])
3986 continue;
3987
3988 xtermclear(0, y, term.col, y);
3989 term.dirty[y] = 0;
3990
3991 specs = term.specbuf;
3992 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
3993
3994 i = ox = 0;
3995 for (x = x1; x < x2 && i < numspecs; x++) {
3996 new = term.line[y][x];
3997 if (new.mode == ATTR_WDUMMY)
3998 continue;
3999 if (ena_sel && selected(x, y))
4000 new.mode ^= ATTR_REVERSE;
4001 if (i > 0 && ATTRCMP(base, new)) {
4002 xdrawglyphfontspecs(specs, base, i, ox, y);
4003 specs += i;
4004 numspecs -= i;
4005 i = 0;
4006 }
4007 if (i == 0) {
4008 ox = x;
4009 base = new;
4010 }
4011 i++;
4012 }
4013 if (i > 0)
4014 xdrawglyphfontspecs(specs, base, i, ox, y);
4015 }
4016 xdrawcursor();
4017 }
4018
4019 void
4020 expose(XEvent *ev)
4021 {
4022 redraw();
4023 }
4024
4025 void
4026 visibility(XEvent *ev)
4027 {
4028 XVisibilityEvent *e = &ev->xvisibility;
4029
4030 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
4031 }
4032
4033 void
4034 unmap(XEvent *ev)
4035 {
4036 xw.state &= ~WIN_VISIBLE;
4037 }
4038
4039 void
4040 xsetpointermotion(int set)
4041 {
4042 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
4043 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
4044 }
4045
4046 void
4047 xseturgency(int add)
4048 {
4049 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
4050
4051 MODBIT(h->flags, add, XUrgencyHint);
4052 XSetWMHints(xw.dpy, xw.win, h);
4053 XFree(h);
4054 }
4055
4056 void
4057 focus(XEvent *ev)
4058 {
4059 XFocusChangeEvent *e = &ev->xfocus;
4060
4061 if (e->mode == NotifyGrab)
4062 return;
4063
4064 if (ev->type == FocusIn) {
4065 XSetICFocus(xw.xic);
4066 xw.state |= WIN_FOCUSED;
4067 xseturgency(0);
4068 if (IS_SET(MODE_FOCUS))
4069 ttywrite("\033[I", 3);
4070 } else {
4071 XUnsetICFocus(xw.xic);
4072 xw.state &= ~WIN_FOCUSED;
4073 if (IS_SET(MODE_FOCUS))
4074 ttywrite("\033[O", 3);
4075 }
4076 }
4077
4078 int
4079 match(uint mask, uint state)
4080 {
4081 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
4082 }
4083
4084 void
4085 numlock(const Arg *dummy)
4086 {
4087 term.numlock ^= 1;
4088 }
4089
4090 char*
4091 kmap(KeySym k, uint state)
4092 {
4093 Key *kp;
4094 int i;
4095
4096 /* Check for mapped keys out of X11 function keys. */
4097 for (i = 0; i < LEN(mappedkeys); i++) {
4098 if (mappedkeys[i] == k)
4099 break;
4100 }
4101 if (i == LEN(mappedkeys)) {
4102 if ((k & 0xFFFF) < 0xFD00)
4103 return NULL;
4104 }
4105
4106 for (kp = key; kp < key + LEN(key); kp++) {
4107 if (kp->k != k)
4108 continue;
4109
4110 if (!match(kp->mask, state))
4111 continue;
4112
4113 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
4114 continue;
4115 if (term.numlock && kp->appkey == 2)
4116 continue;
4117
4118 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
4119 continue;
4120
4121 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
4122 continue;
4123
4124 return kp->s;
4125 }
4126
4127 return NULL;
4128 }
4129
4130 void
4131 kpress(XEvent *ev)
4132 {
4133 XKeyEvent *e = &ev->xkey;
4134 KeySym ksym;
4135 char buf[32], *customkey;
4136 int len;
4137 Rune c;
4138 Status status;
4139 Shortcut *bp;
4140
4141 if (IS_SET(MODE_KBDLOCK))
4142 return;
4143
4144 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
4145 /* 1. shortcuts */
4146 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
4147 if (ksym == bp->keysym && match(bp->mod, e->state)) {
4148 bp->func(&(bp->arg));
4149 return;
4150 }
4151 }
4152
4153 /* 2. custom keys from config.h */
4154 if ((customkey = kmap(ksym, e->state))) {
4155 ttysend(customkey, strlen(customkey));
4156 return;
4157 }
4158
4159 /* 3. composed string from input method */
4160 if (len == 0)
4161 return;
4162 if (len == 1 && e->state & Mod1Mask) {
4163 if (IS_SET(MODE_8BIT)) {
4164 if (*buf < 0177) {
4165 c = *buf | 0x80;
4166 len = utf8encode(c, buf);
4167 }
4168 } else {
4169 buf[1] = buf[0];
4170 buf[0] = '\033';
4171 len = 2;
4172 }
4173 }
4174 ttysend(buf, len);
4175 }
4176
4177
4178 void
4179 cmessage(XEvent *e)
4180 {
4181 /*
4182 * See xembed specs
4183 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
4184 */
4185 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
4186 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
4187 xw.state |= WIN_FOCUSED;
4188 xseturgency(0);
4189 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
4190 xw.state &= ~WIN_FOCUSED;
4191 }
4192 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
4193 /* Send SIGHUP to shell */
4194 kill(pid, SIGHUP);
4195 exit(0);
4196 }
4197 }
4198
4199 void
4200 cresize(int width, int height)
4201 {
4202 int col, row;
4203
4204 if (width != 0)
4205 xw.w = width;
4206 if (height != 0)
4207 xw.h = height;
4208
4209 col = (xw.w - 2 * borderpx) / xw.cw;
4210 row = (xw.h - 2 * borderpx) / xw.ch;
4211
4212 tresize(col, row);
4213 xresize(col, row);
4214 ttyresize();
4215 }
4216
4217 void
4218 resize(XEvent *e)
4219 {
4220 if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
4221 return;
4222
4223 cresize(e->xconfigure.width, e->xconfigure.height);
4224 }
4225
4226 void
4227 run(void)
4228 {
4229 XEvent ev;
4230 int w = xw.w, h = xw.h;
4231 fd_set rfd;
4232 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
4233 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
4234 long deltatime;
4235
4236 /* Waiting for window mapping */
4237 do {
4238 XNextEvent(xw.dpy, &ev);
4239 /*
4240 * This XFilterEvent call is required because of XOpenIM. It
4241 * does filter out the key event and some client message for
4242 * the input method too.
4243 */
4244 if (XFilterEvent(&ev, None))
4245 continue;
4246 if (ev.type == ConfigureNotify) {
4247 w = ev.xconfigure.width;
4248 h = ev.xconfigure.height;
4249 }
4250 } while (ev.type != MapNotify);
4251
4252 ttynew();
4253 cresize(w, h);
4254
4255 clock_gettime(CLOCK_MONOTONIC, &last);
4256 lastblink = last;
4257
4258 for (xev = actionfps;;) {
4259 FD_ZERO(&rfd);
4260 FD_SET(cmdfd, &rfd);
4261 FD_SET(xfd, &rfd);
4262
4263 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
4264 if (errno == EINTR)
4265 continue;
4266 die("select failed: %s\n", strerror(errno));
4267 }
4268 if (FD_ISSET(cmdfd, &rfd)) {
4269 ttyread();
4270 if (blinktimeout) {
4271 blinkset = tattrset(ATTR_BLINK);
4272 if (!blinkset)
4273 MODBIT(term.mode, 0, MODE_BLINK);
4274 }
4275 }
4276
4277 if (FD_ISSET(xfd, &rfd))
4278 xev = actionfps;
4279
4280 clock_gettime(CLOCK_MONOTONIC, &now);
4281 drawtimeout.tv_sec = 0;
4282 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
4283 tv = &drawtimeout;
4284
4285 dodraw = 0;
4286 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
4287 tsetdirtattr(ATTR_BLINK);
4288 term.mode ^= MODE_BLINK;
4289 lastblink = now;
4290 dodraw = 1;
4291 }
4292 deltatime = TIMEDIFF(now, last);
4293 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
4294 dodraw = 1;
4295 last = now;
4296 }
4297
4298 if (dodraw) {
4299 while (XPending(xw.dpy)) {
4300 XNextEvent(xw.dpy, &ev);
4301 if (XFilterEvent(&ev, None))
4302 continue;
4303 if (handler[ev.type])
4304 (handler[ev.type])(&ev);
4305 }
4306
4307 draw();
4308 XFlush(xw.dpy);
4309
4310 if (xev && !FD_ISSET(xfd, &rfd))
4311 xev--;
4312 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
4313 if (blinkset) {
4314 if (TIMEDIFF(now, lastblink) \
4315 > blinktimeout) {
4316 drawtimeout.tv_nsec = 1000;
4317 } else {
4318 drawtimeout.tv_nsec = (1E6 * \
4319 (blinktimeout - \
4320 TIMEDIFF(now,
4321 lastblink)));
4322 }
4323 drawtimeout.tv_sec = \
4324 drawtimeout.tv_nsec / 1E9;
4325 drawtimeout.tv_nsec %= (long)1E9;
4326 } else {
4327 tv = NULL;
4328 }
4329 }
4330 }
4331 }
4332 }
4333
4334 void
4335 usage(void)
4336 {
4337 die("usage: %s "
4338 "[-aiv] [-c class] [-f font] [-g geometry] [-n name] [-o file]\n "
4339 " [-T title] [-t title] [-w windowid] [[-e] command [args ...]\n "
4340 " %s [-aiv] [-c class] [-f font] [-g geometry] [-n name] [-o file]\n "
4341 " [-o file] [-T title] [-t title] [-w windowid] -l line"
4342 " [stty_args ...]\n", argv0, argv0);
4343 }
4344
4345 void
4346 version(void)
4347 {
4348 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
4349 }
4350
4351 int
4352 main(int argc, char *argv[])
4353 {
4354 uint cols = 80, rows = 24;
4355
4356 xw.l = xw.t = 0;
4357 xw.isfixed = False;
4358 xw.cursor = cursorshape;
4359
4360 ARGBEGIN {
4361 case 'a':
4362 allowaltscreen = 0;
4363 break;
4364 case 'c':
4365 opt_class = EARGF(usage());
4366 break;
4367 case 'e':
4368 if (argc > 0)
4369 --argc, ++argv;
4370 goto run;
4371 case 'f':
4372 opt_font = EARGF(usage());
4373 break;
4374 case 'g':
4375 xw.gm = XParseGeometry(EARGF(usage()),
4376 &xw.l, &xw.t, &cols, &rows);
4377 break;
4378 case 'i':
4379 xw.isfixed = 1;
4380 break;
4381 case 'o':
4382 opt_io = EARGF(usage());
4383 break;
4384 case 'l':
4385 opt_line = EARGF(usage());
4386 break;
4387 case 'n':
4388 opt_name = EARGF(usage());
4389 break;
4390 case 't':
4391 case 'T':
4392 opt_title = EARGF(usage());
4393 break;
4394 case 'w':
4395 opt_embed = EARGF(usage());
4396 break;
4397 case 'v':
4398 version();
4399 break;
4400 default:
4401 usage();
4402 } ARGEND;
4403
4404 run:
4405 if (argc > 0) {
4406 /* eat all remaining arguments */
4407 opt_cmd = argv;
4408 if (!opt_title && !opt_line)
4409 opt_title = basename(xstrdup(argv[0]));
4410 }
4411 setlocale(LC_CTYPE, "");
4412 XSetLocaleModifiers("");
4413 tnew(MAX(cols, 1), MAX(rows, 1));
4414 xinit();
4415 selinit();
4416 run();
4417
4418 return 0;
4419 }
4420