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c67623f0f43f422fac34512aef9c9c71a128b935
[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 NUMMAXLEN(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
70 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
71 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
72 #define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d))
73 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
74 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
75 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
76 #define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL)
77 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
78 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
79 (a).bg != (b).bg)
80 #define IS_SET(flag) ((term.mode & (flag)) != 0)
81 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
82 (t1.tv_nsec-t2.tv_nsec)/1E6)
83 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
84
85 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
86 #define IS_TRUECOL(x) (1 << 24 & (x))
87 #define TRUERED(x) (((x) & 0xff0000) >> 8)
88 #define TRUEGREEN(x) (((x) & 0xff00))
89 #define TRUEBLUE(x) (((x) & 0xff) << 8)
90
91 /* constants */
92 #define ISO14755CMD "dmenu -w %lu -p codepoint: </dev/null"
93
94 enum glyph_attribute {
95 ATTR_NULL = 0,
96 ATTR_BOLD = 1 << 0,
97 ATTR_FAINT = 1 << 1,
98 ATTR_ITALIC = 1 << 2,
99 ATTR_UNDERLINE = 1 << 3,
100 ATTR_BLINK = 1 << 4,
101 ATTR_REVERSE = 1 << 5,
102 ATTR_INVISIBLE = 1 << 6,
103 ATTR_STRUCK = 1 << 7,
104 ATTR_WRAP = 1 << 8,
105 ATTR_WIDE = 1 << 9,
106 ATTR_WDUMMY = 1 << 10,
107 ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
108 };
109
110 enum cursor_movement {
111 CURSOR_SAVE,
112 CURSOR_LOAD
113 };
114
115 enum cursor_state {
116 CURSOR_DEFAULT = 0,
117 CURSOR_WRAPNEXT = 1,
118 CURSOR_ORIGIN = 2
119 };
120
121 enum term_mode {
122 MODE_WRAP = 1 << 0,
123 MODE_INSERT = 1 << 1,
124 MODE_APPKEYPAD = 1 << 2,
125 MODE_ALTSCREEN = 1 << 3,
126 MODE_CRLF = 1 << 4,
127 MODE_MOUSEBTN = 1 << 5,
128 MODE_MOUSEMOTION = 1 << 6,
129 MODE_REVERSE = 1 << 7,
130 MODE_KBDLOCK = 1 << 8,
131 MODE_HIDE = 1 << 9,
132 MODE_ECHO = 1 << 10,
133 MODE_APPCURSOR = 1 << 11,
134 MODE_MOUSESGR = 1 << 12,
135 MODE_8BIT = 1 << 13,
136 MODE_BLINK = 1 << 14,
137 MODE_FBLINK = 1 << 15,
138 MODE_FOCUS = 1 << 16,
139 MODE_MOUSEX10 = 1 << 17,
140 MODE_MOUSEMANY = 1 << 18,
141 MODE_BRCKTPASTE = 1 << 19,
142 MODE_PRINT = 1 << 20,
143 MODE_UTF8 = 1 << 21,
144 MODE_SIXEL = 1 << 22,
145 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
146 |MODE_MOUSEMANY,
147 };
148
149 enum charset {
150 CS_GRAPHIC0,
151 CS_GRAPHIC1,
152 CS_UK,
153 CS_USA,
154 CS_MULTI,
155 CS_GER,
156 CS_FIN
157 };
158
159 enum escape_state {
160 ESC_START = 1,
161 ESC_CSI = 2,
162 ESC_STR = 4, /* OSC, PM, APC */
163 ESC_ALTCHARSET = 8,
164 ESC_STR_END = 16, /* a final string was encountered */
165 ESC_TEST = 32, /* Enter in test mode */
166 ESC_UTF8 = 64,
167 ESC_DCS =128,
168 };
169
170 enum window_state {
171 WIN_VISIBLE = 1,
172 WIN_FOCUSED = 2
173 };
174
175 enum selection_mode {
176 SEL_IDLE = 0,
177 SEL_EMPTY = 1,
178 SEL_READY = 2
179 };
180
181 enum selection_type {
182 SEL_REGULAR = 1,
183 SEL_RECTANGULAR = 2
184 };
185
186 enum selection_snap {
187 SNAP_WORD = 1,
188 SNAP_LINE = 2
189 };
190
191 typedef unsigned char uchar;
192 typedef unsigned int uint;
193 typedef unsigned long ulong;
194 typedef unsigned short ushort;
195
196 typedef uint_least32_t Rune;
197
198 typedef XftDraw *Draw;
199 typedef XftColor Color;
200
201 typedef struct {
202 Rune u; /* character code */
203 ushort mode; /* attribute flags */
204 uint32_t fg; /* foreground */
205 uint32_t bg; /* background */
206 } Glyph;
207
208 typedef Glyph *Line;
209
210 typedef struct {
211 Glyph attr; /* current char attributes */
212 int x;
213 int y;
214 char state;
215 } TCursor;
216
217 /* CSI Escape sequence structs */
218 /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
219 typedef struct {
220 char buf[ESC_BUF_SIZ]; /* raw string */
221 int len; /* raw string length */
222 char priv;
223 int arg[ESC_ARG_SIZ];
224 int narg; /* nb of args */
225 char mode[2];
226 } CSIEscape;
227
228 /* STR Escape sequence structs */
229 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
230 typedef struct {
231 char type; /* ESC type ... */
232 char buf[STR_BUF_SIZ]; /* raw string */
233 int len; /* raw string length */
234 char *args[STR_ARG_SIZ];
235 int narg; /* nb of args */
236 } STREscape;
237
238 /* Internal representation of the screen */
239 typedef struct {
240 int row; /* nb row */
241 int col; /* nb col */
242 Line *line; /* screen */
243 Line *alt; /* alternate screen */
244 int *dirty; /* dirtyness of lines */
245 XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
246 TCursor c; /* cursor */
247 int top; /* top scroll limit */
248 int bot; /* bottom scroll limit */
249 int mode; /* terminal mode flags */
250 int esc; /* escape state flags */
251 char trantbl[4]; /* charset table translation */
252 int charset; /* current charset */
253 int icharset; /* selected charset for sequence */
254 int numlock; /* lock numbers in keyboard */
255 int *tabs;
256 } Term;
257
258 /* Purely graphic info */
259 typedef struct {
260 Display *dpy;
261 Colormap cmap;
262 Window win;
263 Drawable buf;
264 Atom xembed, wmdeletewin, netwmname, netwmpid;
265 XIM xim;
266 XIC xic;
267 Draw draw;
268 Visual *vis;
269 XSetWindowAttributes attrs;
270 int scr;
271 int isfixed; /* is fixed geometry? */
272 int l, t; /* left and top offset */
273 int gm; /* geometry mask */
274 int tw, th; /* tty width and height */
275 int w, h; /* window width and height */
276 int ch; /* char height */
277 int cw; /* char width */
278 char state; /* focus, redraw, visible */
279 int cursor; /* cursor style */
280 } XWindow;
281
282 typedef struct {
283 uint b;
284 uint mask;
285 char *s;
286 } MouseShortcut;
287
288 typedef struct {
289 KeySym k;
290 uint mask;
291 char *s;
292 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
293 signed char appkey; /* application keypad */
294 signed char appcursor; /* application cursor */
295 signed char crlf; /* crlf mode */
296 } Key;
297
298 typedef struct {
299 int mode;
300 int type;
301 int snap;
302 /*
303 * Selection variables:
304 * nb – normalized coordinates of the beginning of the selection
305 * ne – normalized coordinates of the end of the selection
306 * ob – original coordinates of the beginning of the selection
307 * oe – original coordinates of the end of the selection
308 */
309 struct {
310 int x, y;
311 } nb, ne, ob, oe;
312
313 char *primary, *clipboard;
314 Atom xtarget;
315 int alt;
316 struct timespec tclick1;
317 struct timespec tclick2;
318 } Selection;
319
320 typedef union {
321 int i;
322 uint ui;
323 float f;
324 const void *v;
325 } Arg;
326
327 typedef struct {
328 uint mod;
329 KeySym keysym;
330 void (*func)(const Arg *);
331 const Arg arg;
332 } Shortcut;
333
334 /* function definitions used in config.h */
335 static void clipcopy(const Arg *);
336 static void clippaste(const Arg *);
337 static void numlock(const Arg *);
338 static void selpaste(const Arg *);
339 static void xzoom(const Arg *);
340 static void xzoomabs(const Arg *);
341 static void xzoomreset(const Arg *);
342 static void printsel(const Arg *);
343 static void printscreen(const Arg *) ;
344 static void iso14755(const Arg *);
345 static void toggleprinter(const Arg *);
346 static void sendbreak(const Arg *);
347
348 /* Config.h for applying patches and the configuration. */
349 #include "config.h"
350
351 /* Font structure */
352 typedef struct {
353 int height;
354 int width;
355 int ascent;
356 int descent;
357 short lbearing;
358 short rbearing;
359 XftFont *match;
360 FcFontSet *set;
361 FcPattern *pattern;
362 } Font;
363
364 /* Drawing Context */
365 typedef struct {
366 Color col[MAX(LEN(colorname), 256)];
367 Font font, bfont, ifont, ibfont;
368 GC gc;
369 } DC;
370
371 static void die(const char *, ...);
372 static void draw(void);
373 static void redraw(void);
374 static void drawregion(int, int, int, int);
375 static void execsh(void);
376 static void stty(void);
377 static void sigchld(int);
378 static void run(void);
379
380 static void csidump(void);
381 static void csihandle(void);
382 static void csiparse(void);
383 static void csireset(void);
384 static int eschandle(uchar);
385 static void strdump(void);
386 static void strhandle(void);
387 static void strparse(void);
388 static void strreset(void);
389
390 static int tattrset(int);
391 static void tprinter(char *, size_t);
392 static void tdumpsel(void);
393 static void tdumpline(int);
394 static void tdump(void);
395 static void tclearregion(int, int, int, int);
396 static void tcursor(int);
397 static void tdeletechar(int);
398 static void tdeleteline(int);
399 static void tinsertblank(int);
400 static void tinsertblankline(int);
401 static int tlinelen(int);
402 static void tmoveto(int, int);
403 static void tmoveato(int, int);
404 static void tnew(int, int);
405 static void tnewline(int);
406 static void tputtab(int);
407 static void tputc(Rune);
408 static void treset(void);
409 static void tresize(int, int);
410 static void tscrollup(int, int);
411 static void tscrolldown(int, int);
412 static void tsetattr(int *, int);
413 static void tsetchar(Rune, Glyph *, int, int);
414 static void tsetscroll(int, int);
415 static void tswapscreen(void);
416 static void tsetdirt(int, int);
417 static void tsetdirtattr(int);
418 static void tsetmode(int, int, int *, int);
419 static void tfulldirt(void);
420 static void techo(Rune);
421 static void tcontrolcode(uchar );
422 static void tdectest(char );
423 static void tdefutf8(char);
424 static int32_t tdefcolor(int *, int *, int);
425 static void tdeftran(char);
426 static inline int match(uint, uint);
427 static void ttynew(void);
428 static size_t ttyread(void);
429 static void ttyresize(void);
430 static void ttysend(char *, size_t);
431 static void ttywrite(const char *, size_t);
432 static void tstrsequence(uchar);
433
434 static inline ushort sixd_to_16bit(int);
435 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
436 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
437 static void xdrawglyph(Glyph, int, int);
438 static void xhints(void);
439 static void xclear(int, int, int, int);
440 static void xdrawcursor(void);
441 static void xinit(void);
442 static void xloadcols(void);
443 static int xsetcolorname(int, const char *);
444 static int xgeommasktogravity(int);
445 static int xloadfont(Font *, FcPattern *);
446 static void xloadfonts(char *, double);
447 static void xsettitle(char *);
448 static void xresettitle(void);
449 static void xsetpointermotion(int);
450 static void xseturgency(int);
451 static void xsetsel(char *, Time);
452 static void xunloadfont(Font *);
453 static void xunloadfonts(void);
454 static void xresize(int, int);
455
456 static void expose(XEvent *);
457 static void visibility(XEvent *);
458 static void unmap(XEvent *);
459 static char *kmap(KeySym, uint);
460 static void kpress(XEvent *);
461 static void cmessage(XEvent *);
462 static void cresize(int, int);
463 static void resize(XEvent *);
464 static void focus(XEvent *);
465 static void brelease(XEvent *);
466 static void bpress(XEvent *);
467 static void bmotion(XEvent *);
468 static void propnotify(XEvent *);
469 static void selnotify(XEvent *);
470 static void selclear(XEvent *);
471 static void selrequest(XEvent *);
472
473 static void selinit(void);
474 static void selnormalize(void);
475 static inline int selected(int, int);
476 static char *getsel(void);
477 static void selcopy(Time);
478 static void selscroll(int, int);
479 static void selsnap(int *, int *, int);
480 static int x2col(int);
481 static int y2row(int);
482 static void getbuttoninfo(XEvent *);
483 static void mousereport(XEvent *);
484
485 static size_t utf8decode(char *, Rune *, size_t);
486 static Rune utf8decodebyte(char, size_t *);
487 static size_t utf8encode(Rune, char *);
488 static char utf8encodebyte(Rune, size_t);
489 static char *utf8strchr(char *s, Rune u);
490 static size_t utf8validate(Rune *, size_t);
491
492 static ssize_t xwrite(int, const char *, size_t);
493 static void *xmalloc(size_t);
494 static void *xrealloc(void *, size_t);
495 static char *xstrdup(char *);
496
497 static void usage(void);
498
499 static void (*handler[LASTEvent])(XEvent *) = {
500 [KeyPress] = kpress,
501 [ClientMessage] = cmessage,
502 [ConfigureNotify] = resize,
503 [VisibilityNotify] = visibility,
504 [UnmapNotify] = unmap,
505 [Expose] = expose,
506 [FocusIn] = focus,
507 [FocusOut] = focus,
508 [MotionNotify] = bmotion,
509 [ButtonPress] = bpress,
510 [ButtonRelease] = brelease,
511 /*
512 * Uncomment if you want the selection to disappear when you select something
513 * different in another window.
514 */
515 /* [SelectionClear] = selclear, */
516 [SelectionNotify] = selnotify,
517 /*
518 * PropertyNotify is only turned on when there is some INCR transfer happening
519 * for the selection retrieval.
520 */
521 [PropertyNotify] = propnotify,
522 [SelectionRequest] = selrequest,
523 };
524
525 /* Globals */
526 static DC dc;
527 static XWindow xw;
528 static Term term;
529 static CSIEscape csiescseq;
530 static STREscape strescseq;
531 static int cmdfd;
532 static pid_t pid;
533 static Selection sel;
534 static int iofd = 1;
535 static char **opt_cmd = NULL;
536 static char *opt_class = NULL;
537 static char *opt_embed = NULL;
538 static char *opt_font = NULL;
539 static char *opt_io = NULL;
540 static char *opt_line = NULL;
541 static char *opt_name = NULL;
542 static char *opt_title = NULL;
543 static int oldbutton = 3; /* button event on startup: 3 = release */
544
545 static char *usedfont = NULL;
546 static double usedfontsize = 0;
547 static double defaultfontsize = 0;
548
549 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
550 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
551 static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
552 static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
553
554 /* Font Ring Cache */
555 enum {
556 FRC_NORMAL,
557 FRC_ITALIC,
558 FRC_BOLD,
559 FRC_ITALICBOLD
560 };
561
562 typedef struct {
563 XftFont *font;
564 int flags;
565 Rune unicodep;
566 } Fontcache;
567
568 /* Fontcache is an array now. A new font will be appended to the array. */
569 static Fontcache frc[16];
570 static int frclen = 0;
571
572 ssize_t
573 xwrite(int fd, const char *s, size_t len)
574 {
575 size_t aux = len;
576 ssize_t r;
577
578 while (len > 0) {
579 r = write(fd, s, len);
580 if (r < 0)
581 return r;
582 len -= r;
583 s += r;
584 }
585
586 return aux;
587 }
588
589 void *
590 xmalloc(size_t len)
591 {
592 void *p = malloc(len);
593
594 if (!p)
595 die("Out of memory\n");
596
597 return p;
598 }
599
600 void *
601 xrealloc(void *p, size_t len)
602 {
603 if ((p = realloc(p, len)) == NULL)
604 die("Out of memory\n");
605
606 return p;
607 }
608
609 char *
610 xstrdup(char *s)
611 {
612 if ((s = strdup(s)) == NULL)
613 die("Out of memory\n");
614
615 return s;
616 }
617
618 size_t
619 utf8decode(char *c, Rune *u, size_t clen)
620 {
621 size_t i, j, len, type;
622 Rune udecoded;
623
624 *u = UTF_INVALID;
625 if (!clen)
626 return 0;
627 udecoded = utf8decodebyte(c[0], &len);
628 if (!BETWEEN(len, 1, UTF_SIZ))
629 return 1;
630 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
631 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
632 if (type != 0)
633 return j;
634 }
635 if (j < len)
636 return 0;
637 *u = udecoded;
638 utf8validate(u, len);
639
640 return len;
641 }
642
643 Rune
644 utf8decodebyte(char c, size_t *i)
645 {
646 for (*i = 0; *i < LEN(utfmask); ++(*i))
647 if (((uchar)c & utfmask[*i]) == utfbyte[*i])
648 return (uchar)c & ~utfmask[*i];
649
650 return 0;
651 }
652
653 size_t
654 utf8encode(Rune u, char *c)
655 {
656 size_t len, i;
657
658 len = utf8validate(&u, 0);
659 if (len > UTF_SIZ)
660 return 0;
661
662 for (i = len - 1; i != 0; --i) {
663 c[i] = utf8encodebyte(u, 0);
664 u >>= 6;
665 }
666 c[0] = utf8encodebyte(u, len);
667
668 return len;
669 }
670
671 char
672 utf8encodebyte(Rune u, size_t i)
673 {
674 return utfbyte[i] | (u & ~utfmask[i]);
675 }
676
677 char *
678 utf8strchr(char *s, Rune u)
679 {
680 Rune r;
681 size_t i, j, len;
682
683 len = strlen(s);
684 for (i = 0, j = 0; i < len; i += j) {
685 if (!(j = utf8decode(&s[i], &r, len - i)))
686 break;
687 if (r == u)
688 return &(s[i]);
689 }
690
691 return NULL;
692 }
693
694 size_t
695 utf8validate(Rune *u, size_t i)
696 {
697 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
698 *u = UTF_INVALID;
699 for (i = 1; *u > utfmax[i]; ++i)
700 ;
701
702 return i;
703 }
704
705 void
706 selinit(void)
707 {
708 clock_gettime(CLOCK_MONOTONIC, &sel.tclick1);
709 clock_gettime(CLOCK_MONOTONIC, &sel.tclick2);
710 sel.mode = SEL_IDLE;
711 sel.snap = 0;
712 sel.ob.x = -1;
713 sel.primary = NULL;
714 sel.clipboard = NULL;
715 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
716 if (sel.xtarget == None)
717 sel.xtarget = XA_STRING;
718 }
719
720 int
721 x2col(int x)
722 {
723 x -= borderpx;
724 x /= xw.cw;
725
726 return LIMIT(x, 0, term.col-1);
727 }
728
729 int
730 y2row(int y)
731 {
732 y -= borderpx;
733 y /= xw.ch;
734
735 return LIMIT(y, 0, term.row-1);
736 }
737
738 int
739 tlinelen(int y)
740 {
741 int i = term.col;
742
743 if (term.line[y][i - 1].mode & ATTR_WRAP)
744 return i;
745
746 while (i > 0 && term.line[y][i - 1].u == ' ')
747 --i;
748
749 return i;
750 }
751
752 void
753 selnormalize(void)
754 {
755 int i;
756
757 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
758 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
759 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
760 } else {
761 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
762 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
763 }
764 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
765 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
766
767 selsnap(&sel.nb.x, &sel.nb.y, -1);
768 selsnap(&sel.ne.x, &sel.ne.y, +1);
769
770 /* expand selection over line breaks */
771 if (sel.type == SEL_RECTANGULAR)
772 return;
773 i = tlinelen(sel.nb.y);
774 if (i < sel.nb.x)
775 sel.nb.x = i;
776 if (tlinelen(sel.ne.y) <= sel.ne.x)
777 sel.ne.x = term.col - 1;
778 }
779
780 int
781 selected(int x, int y)
782 {
783 if (sel.mode == SEL_EMPTY)
784 return 0;
785
786 if (sel.type == SEL_RECTANGULAR)
787 return BETWEEN(y, sel.nb.y, sel.ne.y)
788 && BETWEEN(x, sel.nb.x, sel.ne.x);
789
790 return BETWEEN(y, sel.nb.y, sel.ne.y)
791 && (y != sel.nb.y || x >= sel.nb.x)
792 && (y != sel.ne.y || x <= sel.ne.x);
793 }
794
795 void
796 selsnap(int *x, int *y, int direction)
797 {
798 int newx, newy, xt, yt;
799 int delim, prevdelim;
800 Glyph *gp, *prevgp;
801
802 switch (sel.snap) {
803 case SNAP_WORD:
804 /*
805 * Snap around if the word wraps around at the end or
806 * beginning of a line.
807 */
808 prevgp = &term.line[*y][*x];
809 prevdelim = ISDELIM(prevgp->u);
810 for (;;) {
811 newx = *x + direction;
812 newy = *y;
813 if (!BETWEEN(newx, 0, term.col - 1)) {
814 newy += direction;
815 newx = (newx + term.col) % term.col;
816 if (!BETWEEN(newy, 0, term.row - 1))
817 break;
818
819 if (direction > 0)
820 yt = *y, xt = *x;
821 else
822 yt = newy, xt = newx;
823 if (!(term.line[yt][xt].mode & ATTR_WRAP))
824 break;
825 }
826
827 if (newx >= tlinelen(newy))
828 break;
829
830 gp = &term.line[newy][newx];
831 delim = ISDELIM(gp->u);
832 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
833 || (delim && gp->u != prevgp->u)))
834 break;
835
836 *x = newx;
837 *y = newy;
838 prevgp = gp;
839 prevdelim = delim;
840 }
841 break;
842 case SNAP_LINE:
843 /*
844 * Snap around if the the previous line or the current one
845 * has set ATTR_WRAP at its end. Then the whole next or
846 * previous line will be selected.
847 */
848 *x = (direction < 0) ? 0 : term.col - 1;
849 if (direction < 0) {
850 for (; *y > 0; *y += direction) {
851 if (!(term.line[*y-1][term.col-1].mode
852 & ATTR_WRAP)) {
853 break;
854 }
855 }
856 } else if (direction > 0) {
857 for (; *y < term.row-1; *y += direction) {
858 if (!(term.line[*y][term.col-1].mode
859 & ATTR_WRAP)) {
860 break;
861 }
862 }
863 }
864 break;
865 }
866 }
867
868 void
869 getbuttoninfo(XEvent *e)
870 {
871 int type;
872 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
873
874 sel.alt = IS_SET(MODE_ALTSCREEN);
875
876 sel.oe.x = x2col(e->xbutton.x);
877 sel.oe.y = y2row(e->xbutton.y);
878 selnormalize();
879
880 sel.type = SEL_REGULAR;
881 for (type = 1; type < LEN(selmasks); ++type) {
882 if (match(selmasks[type], state)) {
883 sel.type = type;
884 break;
885 }
886 }
887 }
888
889 void
890 mousereport(XEvent *e)
891 {
892 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
893 button = e->xbutton.button, state = e->xbutton.state,
894 len;
895 char buf[40];
896 static int ox, oy;
897
898 /* from urxvt */
899 if (e->xbutton.type == MotionNotify) {
900 if (x == ox && y == oy)
901 return;
902 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
903 return;
904 /* MOUSE_MOTION: no reporting if no button is pressed */
905 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
906 return;
907
908 button = oldbutton + 32;
909 ox = x;
910 oy = y;
911 } else {
912 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
913 button = 3;
914 } else {
915 button -= Button1;
916 if (button >= 3)
917 button += 64 - 3;
918 }
919 if (e->xbutton.type == ButtonPress) {
920 oldbutton = button;
921 ox = x;
922 oy = y;
923 } else if (e->xbutton.type == ButtonRelease) {
924 oldbutton = 3;
925 /* MODE_MOUSEX10: no button release reporting */
926 if (IS_SET(MODE_MOUSEX10))
927 return;
928 if (button == 64 || button == 65)
929 return;
930 }
931 }
932
933 if (!IS_SET(MODE_MOUSEX10)) {
934 button += ((state & ShiftMask ) ? 4 : 0)
935 + ((state & Mod4Mask ) ? 8 : 0)
936 + ((state & ControlMask) ? 16 : 0);
937 }
938
939 if (IS_SET(MODE_MOUSESGR)) {
940 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
941 button, x+1, y+1,
942 e->xbutton.type == ButtonRelease ? 'm' : 'M');
943 } else if (x < 223 && y < 223) {
944 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
945 32+button, 32+x+1, 32+y+1);
946 } else {
947 return;
948 }
949
950 ttywrite(buf, len);
951 }
952
953 void
954 bpress(XEvent *e)
955 {
956 struct timespec now;
957 MouseShortcut *ms;
958
959 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
960 mousereport(e);
961 return;
962 }
963
964 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
965 if (e->xbutton.button == ms->b
966 && match(ms->mask, e->xbutton.state)) {
967 ttysend(ms->s, strlen(ms->s));
968 return;
969 }
970 }
971
972 if (e->xbutton.button == Button1) {
973 clock_gettime(CLOCK_MONOTONIC, &now);
974
975 /* Clear previous selection, logically and visually. */
976 selclear(NULL);
977 sel.mode = SEL_EMPTY;
978 sel.type = SEL_REGULAR;
979 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
980 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
981
982 /*
983 * If the user clicks below predefined timeouts specific
984 * snapping behaviour is exposed.
985 */
986 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
987 sel.snap = SNAP_LINE;
988 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
989 sel.snap = SNAP_WORD;
990 } else {
991 sel.snap = 0;
992 }
993 selnormalize();
994
995 if (sel.snap != 0)
996 sel.mode = SEL_READY;
997 tsetdirt(sel.nb.y, sel.ne.y);
998 sel.tclick2 = sel.tclick1;
999 sel.tclick1 = now;
1000 }
1001 }
1002
1003 char *
1004 getsel(void)
1005 {
1006 char *str, *ptr;
1007 int y, bufsize, lastx, linelen;
1008 Glyph *gp, *last;
1009
1010 if (sel.ob.x == -1)
1011 return NULL;
1012
1013 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
1014 ptr = str = xmalloc(bufsize);
1015
1016 /* append every set & selected glyph to the selection */
1017 for (y = sel.nb.y; y <= sel.ne.y; y++) {
1018 if ((linelen = tlinelen(y)) == 0) {
1019 *ptr++ = '\n';
1020 continue;
1021 }
1022
1023 if (sel.type == SEL_RECTANGULAR) {
1024 gp = &term.line[y][sel.nb.x];
1025 lastx = sel.ne.x;
1026 } else {
1027 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
1028 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
1029 }
1030 last = &term.line[y][MIN(lastx, linelen-1)];
1031 while (last >= gp && last->u == ' ')
1032 --last;
1033
1034 for ( ; gp <= last; ++gp) {
1035 if (gp->mode & ATTR_WDUMMY)
1036 continue;
1037
1038 ptr += utf8encode(gp->u, ptr);
1039 }
1040
1041 /*
1042 * Copy and pasting of line endings is inconsistent
1043 * in the inconsistent terminal and GUI world.
1044 * The best solution seems like to produce '\n' when
1045 * something is copied from st and convert '\n' to
1046 * '\r', when something to be pasted is received by
1047 * st.
1048 * FIXME: Fix the computer world.
1049 */
1050 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
1051 *ptr++ = '\n';
1052 }
1053 *ptr = 0;
1054 return str;
1055 }
1056
1057 void
1058 selcopy(Time t)
1059 {
1060 xsetsel(getsel(), t);
1061 }
1062
1063 void
1064 propnotify(XEvent *e)
1065 {
1066 XPropertyEvent *xpev;
1067 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1068
1069 xpev = &e->xproperty;
1070 if (xpev->state == PropertyNewValue &&
1071 (xpev->atom == XA_PRIMARY ||
1072 xpev->atom == clipboard)) {
1073 selnotify(e);
1074 }
1075 }
1076
1077 void
1078 selnotify(XEvent *e)
1079 {
1080 ulong nitems, ofs, rem;
1081 int format;
1082 uchar *data, *last, *repl;
1083 Atom type, incratom, property;
1084
1085 incratom = XInternAtom(xw.dpy, "INCR", 0);
1086
1087 ofs = 0;
1088 if (e->type == SelectionNotify) {
1089 property = e->xselection.property;
1090 } else if(e->type == PropertyNotify) {
1091 property = e->xproperty.atom;
1092 } else {
1093 return;
1094 }
1095 if (property == None)
1096 return;
1097
1098 do {
1099 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
1100 BUFSIZ/4, False, AnyPropertyType,
1101 &type, &format, &nitems, &rem,
1102 &data)) {
1103 fprintf(stderr, "Clipboard allocation failed\n");
1104 return;
1105 }
1106
1107 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
1108 /*
1109 * If there is some PropertyNotify with no data, then
1110 * this is the signal of the selection owner that all
1111 * data has been transferred. We won't need to receive
1112 * PropertyNotify events anymore.
1113 */
1114 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
1115 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1116 &xw.attrs);
1117 }
1118
1119 if (type == incratom) {
1120 /*
1121 * Activate the PropertyNotify events so we receive
1122 * when the selection owner does send us the next
1123 * chunk of data.
1124 */
1125 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
1126 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1127 &xw.attrs);
1128
1129 /*
1130 * Deleting the property is the transfer start signal.
1131 */
1132 XDeleteProperty(xw.dpy, xw.win, (int)property);
1133 continue;
1134 }
1135
1136 /*
1137 * As seen in getsel:
1138 * Line endings are inconsistent in the terminal and GUI world
1139 * copy and pasting. When receiving some selection data,
1140 * replace all '\n' with '\r'.
1141 * FIXME: Fix the computer world.
1142 */
1143 repl = data;
1144 last = data + nitems * format / 8;
1145 while ((repl = memchr(repl, '\n', last - repl))) {
1146 *repl++ = '\r';
1147 }
1148
1149 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
1150 ttywrite("\033[200~", 6);
1151 ttysend((char *)data, nitems * format / 8);
1152 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
1153 ttywrite("\033[201~", 6);
1154 XFree(data);
1155 /* number of 32-bit chunks returned */
1156 ofs += nitems * format / 32;
1157 } while (rem > 0);
1158
1159 /*
1160 * Deleting the property again tells the selection owner to send the
1161 * next data chunk in the property.
1162 */
1163 XDeleteProperty(xw.dpy, xw.win, (int)property);
1164 }
1165
1166 void
1167 selpaste(const Arg *dummy)
1168 {
1169 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1170 xw.win, CurrentTime);
1171 }
1172
1173 void
1174 clipcopy(const Arg *dummy)
1175 {
1176 Atom clipboard;
1177
1178 if (sel.clipboard != NULL)
1179 free(sel.clipboard);
1180
1181 if (sel.primary != NULL) {
1182 sel.clipboard = xstrdup(sel.primary);
1183 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1184 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1185 }
1186 }
1187
1188 void
1189 clippaste(const Arg *dummy)
1190 {
1191 Atom clipboard;
1192
1193 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1194 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1195 xw.win, CurrentTime);
1196 }
1197
1198 void
1199 selclear(XEvent *e)
1200 {
1201 if (sel.ob.x == -1)
1202 return;
1203 sel.mode = SEL_IDLE;
1204 sel.ob.x = -1;
1205 tsetdirt(sel.nb.y, sel.ne.y);
1206 }
1207
1208 void
1209 selrequest(XEvent *e)
1210 {
1211 XSelectionRequestEvent *xsre;
1212 XSelectionEvent xev;
1213 Atom xa_targets, string, clipboard;
1214 char *seltext;
1215
1216 xsre = (XSelectionRequestEvent *) e;
1217 xev.type = SelectionNotify;
1218 xev.requestor = xsre->requestor;
1219 xev.selection = xsre->selection;
1220 xev.target = xsre->target;
1221 xev.time = xsre->time;
1222 if (xsre->property == None)
1223 xsre->property = xsre->target;
1224
1225 /* reject */
1226 xev.property = None;
1227
1228 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1229 if (xsre->target == xa_targets) {
1230 /* respond with the supported type */
1231 string = sel.xtarget;
1232 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1233 XA_ATOM, 32, PropModeReplace,
1234 (uchar *) &string, 1);
1235 xev.property = xsre->property;
1236 } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1237 /*
1238 * xith XA_STRING non ascii characters may be incorrect in the
1239 * requestor. It is not our problem, use utf8.
1240 */
1241 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1242 if (xsre->selection == XA_PRIMARY) {
1243 seltext = sel.primary;
1244 } else if (xsre->selection == clipboard) {
1245 seltext = sel.clipboard;
1246 } else {
1247 fprintf(stderr,
1248 "Unhandled clipboard selection 0x%lx\n",
1249 xsre->selection);
1250 return;
1251 }
1252 if (seltext != NULL) {
1253 XChangeProperty(xsre->display, xsre->requestor,
1254 xsre->property, xsre->target,
1255 8, PropModeReplace,
1256 (uchar *)seltext, strlen(seltext));
1257 xev.property = xsre->property;
1258 }
1259 }
1260
1261 /* all done, send a notification to the listener */
1262 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
1263 fprintf(stderr, "Error sending SelectionNotify event\n");
1264 }
1265
1266 void
1267 xsetsel(char *str, Time t)
1268 {
1269 free(sel.primary);
1270 sel.primary = str;
1271
1272 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1273 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1274 selclear(0);
1275 }
1276
1277 void
1278 brelease(XEvent *e)
1279 {
1280 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1281 mousereport(e);
1282 return;
1283 }
1284
1285 if (e->xbutton.button == Button2) {
1286 selpaste(NULL);
1287 } else if (e->xbutton.button == Button1) {
1288 if (sel.mode == SEL_READY) {
1289 getbuttoninfo(e);
1290 selcopy(e->xbutton.time);
1291 } else
1292 selclear(NULL);
1293 sel.mode = SEL_IDLE;
1294 tsetdirt(sel.nb.y, sel.ne.y);
1295 }
1296 }
1297
1298 void
1299 bmotion(XEvent *e)
1300 {
1301 int oldey, oldex, oldsby, oldsey;
1302
1303 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1304 mousereport(e);
1305 return;
1306 }
1307
1308 if (!sel.mode)
1309 return;
1310
1311 sel.mode = SEL_READY;
1312 oldey = sel.oe.y;
1313 oldex = sel.oe.x;
1314 oldsby = sel.nb.y;
1315 oldsey = sel.ne.y;
1316 getbuttoninfo(e);
1317
1318 if (oldey != sel.oe.y || oldex != sel.oe.x)
1319 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1320 }
1321
1322 void
1323 die(const char *errstr, ...)
1324 {
1325 va_list ap;
1326
1327 va_start(ap, errstr);
1328 vfprintf(stderr, errstr, ap);
1329 va_end(ap);
1330 exit(1);
1331 }
1332
1333 void
1334 execsh(void)
1335 {
1336 char **args, *sh, *prog;
1337 const struct passwd *pw;
1338 char buf[sizeof(long) * 8 + 1];
1339
1340 errno = 0;
1341 if ((pw = getpwuid(getuid())) == NULL) {
1342 if (errno)
1343 die("getpwuid:%s\n", strerror(errno));
1344 else
1345 die("who are you?\n");
1346 }
1347
1348 if ((sh = getenv("SHELL")) == NULL)
1349 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1350
1351 if (opt_cmd)
1352 prog = opt_cmd[0];
1353 else if (utmp)
1354 prog = utmp;
1355 else
1356 prog = sh;
1357 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1358
1359 snprintf(buf, sizeof(buf), "%lu", xw.win);
1360
1361 unsetenv("COLUMNS");
1362 unsetenv("LINES");
1363 unsetenv("TERMCAP");
1364 setenv("LOGNAME", pw->pw_name, 1);
1365 setenv("USER", pw->pw_name, 1);
1366 setenv("SHELL", sh, 1);
1367 setenv("HOME", pw->pw_dir, 1);
1368 setenv("TERM", termname, 1);
1369 setenv("WINDOWID", buf, 1);
1370
1371 signal(SIGCHLD, SIG_DFL);
1372 signal(SIGHUP, SIG_DFL);
1373 signal(SIGINT, SIG_DFL);
1374 signal(SIGQUIT, SIG_DFL);
1375 signal(SIGTERM, SIG_DFL);
1376 signal(SIGALRM, SIG_DFL);
1377
1378 execvp(prog, args);
1379 _exit(1);
1380 }
1381
1382 void
1383 sigchld(int a)
1384 {
1385 int stat;
1386 pid_t p;
1387
1388 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
1389 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1390
1391 if (pid != p)
1392 return;
1393
1394 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
1395 die("child finished with error '%d'\n", stat);
1396 exit(0);
1397 }
1398
1399
1400 void
1401 stty(void)
1402 {
1403 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1404 size_t n, siz;
1405
1406 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
1407 die("incorrect stty parameters\n");
1408 memcpy(cmd, stty_args, n);
1409 q = cmd + n;
1410 siz = sizeof(cmd) - n;
1411 for (p = opt_cmd; p && (s = *p); ++p) {
1412 if ((n = strlen(s)) > siz-1)
1413 die("stty parameter length too long\n");
1414 *q++ = ' ';
1415 memcpy(q, s, n);
1416 q += n;
1417 siz -= n + 1;
1418 }
1419 *q = '\0';
1420 if (system(cmd) != 0)
1421 perror("Couldn't call stty");
1422 }
1423
1424 void
1425 ttynew(void)
1426 {
1427 int m, s;
1428 struct winsize w = {term.row, term.col, 0, 0};
1429
1430 if (opt_io) {
1431 term.mode |= MODE_PRINT;
1432 iofd = (!strcmp(opt_io, "-")) ?
1433 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
1434 if (iofd < 0) {
1435 fprintf(stderr, "Error opening %s:%s\n",
1436 opt_io, strerror(errno));
1437 }
1438 }
1439
1440 if (opt_line) {
1441 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
1442 die("open line failed: %s\n", strerror(errno));
1443 dup2(cmdfd, 0);
1444 stty();
1445 return;
1446 }
1447
1448 /* seems to work fine on linux, openbsd and freebsd */
1449 if (openpty(&m, &s, NULL, NULL, &w) < 0)
1450 die("openpty failed: %s\n", strerror(errno));
1451
1452 switch (pid = fork()) {
1453 case -1:
1454 die("fork failed\n");
1455 break;
1456 case 0:
1457 close(iofd);
1458 setsid(); /* create a new process group */
1459 dup2(s, 0);
1460 dup2(s, 1);
1461 dup2(s, 2);
1462 if (ioctl(s, TIOCSCTTY, NULL) < 0)
1463 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1464 close(s);
1465 close(m);
1466 execsh();
1467 break;
1468 default:
1469 close(s);
1470 cmdfd = m;
1471 signal(SIGCHLD, sigchld);
1472 break;
1473 }
1474 }
1475
1476 size_t
1477 ttyread(void)
1478 {
1479 static char buf[BUFSIZ];
1480 static int buflen = 0;
1481 char *ptr;
1482 int charsize; /* size of utf8 char in bytes */
1483 Rune unicodep;
1484 int ret;
1485
1486 /* append read bytes to unprocessed bytes */
1487 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1488 die("Couldn't read from shell: %s\n", strerror(errno));
1489
1490 buflen += ret;
1491 ptr = buf;
1492
1493 for (;;) {
1494 if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
1495 /* process a complete utf8 char */
1496 charsize = utf8decode(ptr, &unicodep, buflen);
1497 if (charsize == 0)
1498 break;
1499 tputc(unicodep);
1500 ptr += charsize;
1501 buflen -= charsize;
1502
1503 } else {
1504 if (buflen <= 0)
1505 break;
1506 tputc(*ptr++ & 0xFF);
1507 buflen--;
1508 }
1509 }
1510 /* keep any uncomplete utf8 char for the next call */
1511 if (buflen > 0)
1512 memmove(buf, ptr, buflen);
1513
1514 return ret;
1515 }
1516
1517 void
1518 ttywrite(const char *s, size_t n)
1519 {
1520 fd_set wfd, rfd;
1521 ssize_t r;
1522 size_t lim = 256;
1523
1524 /*
1525 * Remember that we are using a pty, which might be a modem line.
1526 * Writing too much will clog the line. That's why we are doing this
1527 * dance.
1528 * FIXME: Migrate the world to Plan 9.
1529 */
1530 while (n > 0) {
1531 FD_ZERO(&wfd);
1532 FD_ZERO(&rfd);
1533 FD_SET(cmdfd, &wfd);
1534 FD_SET(cmdfd, &rfd);
1535
1536 /* Check if we can write. */
1537 if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
1538 if (errno == EINTR)
1539 continue;
1540 die("select failed: %s\n", strerror(errno));
1541 }
1542 if (FD_ISSET(cmdfd, &wfd)) {
1543 /*
1544 * Only write the bytes written by ttywrite() or the
1545 * default of 256. This seems to be a reasonable value
1546 * for a serial line. Bigger values might clog the I/O.
1547 */
1548 if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
1549 goto write_error;
1550 if (r < n) {
1551 /*
1552 * We weren't able to write out everything.
1553 * This means the buffer is getting full
1554 * again. Empty it.
1555 */
1556 if (n < lim)
1557 lim = ttyread();
1558 n -= r;
1559 s += r;
1560 } else {
1561 /* All bytes have been written. */
1562 break;
1563 }
1564 }
1565 if (FD_ISSET(cmdfd, &rfd))
1566 lim = ttyread();
1567 }
1568 return;
1569
1570 write_error:
1571 die("write error on tty: %s\n", strerror(errno));
1572 }
1573
1574 void
1575 ttysend(char *s, size_t n)
1576 {
1577 int len;
1578 char *t, *lim;
1579 Rune u;
1580
1581 ttywrite(s, n);
1582 if (!IS_SET(MODE_ECHO))
1583 return;
1584
1585 lim = &s[n];
1586 for (t = s; t < lim; t += len) {
1587 if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
1588 len = utf8decode(t, &u, n);
1589 } else {
1590 u = *t & 0xFF;
1591 len = 1;
1592 }
1593 if (len <= 0)
1594 break;
1595 techo(u);
1596 n -= len;
1597 }
1598 }
1599
1600 void
1601 ttyresize(void)
1602 {
1603 struct winsize w;
1604
1605 w.ws_row = term.row;
1606 w.ws_col = term.col;
1607 w.ws_xpixel = xw.tw;
1608 w.ws_ypixel = xw.th;
1609 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1610 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1611 }
1612
1613 int
1614 tattrset(int attr)
1615 {
1616 int i, j;
1617
1618 for (i = 0; i < term.row-1; i++) {
1619 for (j = 0; j < term.col-1; j++) {
1620 if (term.line[i][j].mode & attr)
1621 return 1;
1622 }
1623 }
1624
1625 return 0;
1626 }
1627
1628 void
1629 tsetdirt(int top, int bot)
1630 {
1631 int i;
1632
1633 LIMIT(top, 0, term.row-1);
1634 LIMIT(bot, 0, term.row-1);
1635
1636 for (i = top; i <= bot; i++)
1637 term.dirty[i] = 1;
1638 }
1639
1640 void
1641 tsetdirtattr(int attr)
1642 {
1643 int i, j;
1644
1645 for (i = 0; i < term.row-1; i++) {
1646 for (j = 0; j < term.col-1; j++) {
1647 if (term.line[i][j].mode & attr) {
1648 tsetdirt(i, i);
1649 break;
1650 }
1651 }
1652 }
1653 }
1654
1655 void
1656 tfulldirt(void)
1657 {
1658 tsetdirt(0, term.row-1);
1659 }
1660
1661 void
1662 tcursor(int mode)
1663 {
1664 static TCursor c[2];
1665 int alt = IS_SET(MODE_ALTSCREEN);
1666
1667 if (mode == CURSOR_SAVE) {
1668 c[alt] = term.c;
1669 } else if (mode == CURSOR_LOAD) {
1670 term.c = c[alt];
1671 tmoveto(c[alt].x, c[alt].y);
1672 }
1673 }
1674
1675 void
1676 treset(void)
1677 {
1678 uint i;
1679
1680 term.c = (TCursor){{
1681 .mode = ATTR_NULL,
1682 .fg = defaultfg,
1683 .bg = defaultbg
1684 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1685
1686 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1687 for (i = tabspaces; i < term.col; i += tabspaces)
1688 term.tabs[i] = 1;
1689 term.top = 0;
1690 term.bot = term.row - 1;
1691 term.mode = MODE_WRAP|MODE_UTF8;
1692 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1693 term.charset = 0;
1694
1695 for (i = 0; i < 2; i++) {
1696 tmoveto(0, 0);
1697 tcursor(CURSOR_SAVE);
1698 tclearregion(0, 0, term.col-1, term.row-1);
1699 tswapscreen();
1700 }
1701 }
1702
1703 void
1704 tnew(int col, int row)
1705 {
1706 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1707 tresize(col, row);
1708 term.numlock = 1;
1709
1710 treset();
1711 }
1712
1713 void
1714 tswapscreen(void)
1715 {
1716 Line *tmp = term.line;
1717
1718 term.line = term.alt;
1719 term.alt = tmp;
1720 term.mode ^= MODE_ALTSCREEN;
1721 tfulldirt();
1722 }
1723
1724 void
1725 tscrolldown(int orig, int n)
1726 {
1727 int i;
1728 Line temp;
1729
1730 LIMIT(n, 0, term.bot-orig+1);
1731
1732 tsetdirt(orig, term.bot-n);
1733 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1734
1735 for (i = term.bot; i >= orig+n; i--) {
1736 temp = term.line[i];
1737 term.line[i] = term.line[i-n];
1738 term.line[i-n] = temp;
1739 }
1740
1741 selscroll(orig, n);
1742 }
1743
1744 void
1745 tscrollup(int orig, int n)
1746 {
1747 int i;
1748 Line temp;
1749
1750 LIMIT(n, 0, term.bot-orig+1);
1751
1752 tclearregion(0, orig, term.col-1, orig+n-1);
1753 tsetdirt(orig+n, term.bot);
1754
1755 for (i = orig; i <= term.bot-n; i++) {
1756 temp = term.line[i];
1757 term.line[i] = term.line[i+n];
1758 term.line[i+n] = temp;
1759 }
1760
1761 selscroll(orig, -n);
1762 }
1763
1764 void
1765 selscroll(int orig, int n)
1766 {
1767 if (sel.ob.x == -1)
1768 return;
1769
1770 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1771 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1772 selclear(NULL);
1773 return;
1774 }
1775 if (sel.type == SEL_RECTANGULAR) {
1776 if (sel.ob.y < term.top)
1777 sel.ob.y = term.top;
1778 if (sel.oe.y > term.bot)
1779 sel.oe.y = term.bot;
1780 } else {
1781 if (sel.ob.y < term.top) {
1782 sel.ob.y = term.top;
1783 sel.ob.x = 0;
1784 }
1785 if (sel.oe.y > term.bot) {
1786 sel.oe.y = term.bot;
1787 sel.oe.x = term.col;
1788 }
1789 }
1790 selnormalize();
1791 }
1792 }
1793
1794 void
1795 tnewline(int first_col)
1796 {
1797 int y = term.c.y;
1798
1799 if (y == term.bot) {
1800 tscrollup(term.top, 1);
1801 } else {
1802 y++;
1803 }
1804 tmoveto(first_col ? 0 : term.c.x, y);
1805 }
1806
1807 void
1808 csiparse(void)
1809 {
1810 char *p = csiescseq.buf, *np;
1811 long int v;
1812
1813 csiescseq.narg = 0;
1814 if (*p == '?') {
1815 csiescseq.priv = 1;
1816 p++;
1817 }
1818
1819 csiescseq.buf[csiescseq.len] = '\0';
1820 while (p < csiescseq.buf+csiescseq.len) {
1821 np = NULL;
1822 v = strtol(p, &np, 10);
1823 if (np == p)
1824 v = 0;
1825 if (v == LONG_MAX || v == LONG_MIN)
1826 v = -1;
1827 csiescseq.arg[csiescseq.narg++] = v;
1828 p = np;
1829 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1830 break;
1831 p++;
1832 }
1833 csiescseq.mode[0] = *p++;
1834 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1835 }
1836
1837 /* for absolute user moves, when decom is set */
1838 void
1839 tmoveato(int x, int y)
1840 {
1841 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1842 }
1843
1844 void
1845 tmoveto(int x, int y)
1846 {
1847 int miny, maxy;
1848
1849 if (term.c.state & CURSOR_ORIGIN) {
1850 miny = term.top;
1851 maxy = term.bot;
1852 } else {
1853 miny = 0;
1854 maxy = term.row - 1;
1855 }
1856 term.c.state &= ~CURSOR_WRAPNEXT;
1857 term.c.x = LIMIT(x, 0, term.col-1);
1858 term.c.y = LIMIT(y, miny, maxy);
1859 }
1860
1861 void
1862 tsetchar(Rune u, Glyph *attr, int x, int y)
1863 {
1864 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1865 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1866 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1867 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1868 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1869 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1870 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1871 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1872 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1873 };
1874
1875 /*
1876 * The table is proudly stolen from rxvt.
1877 */
1878 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1879 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1880 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1881
1882 if (term.line[y][x].mode & ATTR_WIDE) {
1883 if (x+1 < term.col) {
1884 term.line[y][x+1].u = ' ';
1885 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1886 }
1887 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1888 term.line[y][x-1].u = ' ';
1889 term.line[y][x-1].mode &= ~ATTR_WIDE;
1890 }
1891
1892 term.dirty[y] = 1;
1893 term.line[y][x] = *attr;
1894 term.line[y][x].u = u;
1895 }
1896
1897 void
1898 tclearregion(int x1, int y1, int x2, int y2)
1899 {
1900 int x, y, temp;
1901 Glyph *gp;
1902
1903 if (x1 > x2)
1904 temp = x1, x1 = x2, x2 = temp;
1905 if (y1 > y2)
1906 temp = y1, y1 = y2, y2 = temp;
1907
1908 LIMIT(x1, 0, term.col-1);
1909 LIMIT(x2, 0, term.col-1);
1910 LIMIT(y1, 0, term.row-1);
1911 LIMIT(y2, 0, term.row-1);
1912
1913 for (y = y1; y <= y2; y++) {
1914 term.dirty[y] = 1;
1915 for (x = x1; x <= x2; x++) {
1916 gp = &term.line[y][x];
1917 if (selected(x, y))
1918 selclear(NULL);
1919 gp->fg = term.c.attr.fg;
1920 gp->bg = term.c.attr.bg;
1921 gp->mode = 0;
1922 gp->u = ' ';
1923 }
1924 }
1925 }
1926
1927 void
1928 tdeletechar(int n)
1929 {
1930 int dst, src, size;
1931 Glyph *line;
1932
1933 LIMIT(n, 0, term.col - term.c.x);
1934
1935 dst = term.c.x;
1936 src = term.c.x + n;
1937 size = term.col - src;
1938 line = term.line[term.c.y];
1939
1940 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1941 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1942 }
1943
1944 void
1945 tinsertblank(int n)
1946 {
1947 int dst, src, size;
1948 Glyph *line;
1949
1950 LIMIT(n, 0, term.col - term.c.x);
1951
1952 dst = term.c.x + n;
1953 src = term.c.x;
1954 size = term.col - dst;
1955 line = term.line[term.c.y];
1956
1957 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1958 tclearregion(src, term.c.y, dst - 1, term.c.y);
1959 }
1960
1961 void
1962 tinsertblankline(int n)
1963 {
1964 if (BETWEEN(term.c.y, term.top, term.bot))
1965 tscrolldown(term.c.y, n);
1966 }
1967
1968 void
1969 tdeleteline(int n)
1970 {
1971 if (BETWEEN(term.c.y, term.top, term.bot))
1972 tscrollup(term.c.y, n);
1973 }
1974
1975 int32_t
1976 tdefcolor(int *attr, int *npar, int l)
1977 {
1978 int32_t idx = -1;
1979 uint r, g, b;
1980
1981 switch (attr[*npar + 1]) {
1982 case 2: /* direct color in RGB space */
1983 if (*npar + 4 >= l) {
1984 fprintf(stderr,
1985 "erresc(38): Incorrect number of parameters (%d)\n",
1986 *npar);
1987 break;
1988 }
1989 r = attr[*npar + 2];
1990 g = attr[*npar + 3];
1991 b = attr[*npar + 4];
1992 *npar += 4;
1993 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1994 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1995 r, g, b);
1996 else
1997 idx = TRUECOLOR(r, g, b);
1998 break;
1999 case 5: /* indexed color */
2000 if (*npar + 2 >= l) {
2001 fprintf(stderr,
2002 "erresc(38): Incorrect number of parameters (%d)\n",
2003 *npar);
2004 break;
2005 }
2006 *npar += 2;
2007 if (!BETWEEN(attr[*npar], 0, 255))
2008 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
2009 else
2010 idx = attr[*npar];
2011 break;
2012 case 0: /* implemented defined (only foreground) */
2013 case 1: /* transparent */
2014 case 3: /* direct color in CMY space */
2015 case 4: /* direct color in CMYK space */
2016 default:
2017 fprintf(stderr,
2018 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
2019 break;
2020 }
2021
2022 return idx;
2023 }
2024
2025 void
2026 tsetattr(int *attr, int l)
2027 {
2028 int i;
2029 int32_t idx;
2030
2031 for (i = 0; i < l; i++) {
2032 switch (attr[i]) {
2033 case 0:
2034 term.c.attr.mode &= ~(
2035 ATTR_BOLD |
2036 ATTR_FAINT |
2037 ATTR_ITALIC |
2038 ATTR_UNDERLINE |
2039 ATTR_BLINK |
2040 ATTR_REVERSE |
2041 ATTR_INVISIBLE |
2042 ATTR_STRUCK );
2043 term.c.attr.fg = defaultfg;
2044 term.c.attr.bg = defaultbg;
2045 break;
2046 case 1:
2047 term.c.attr.mode |= ATTR_BOLD;
2048 break;
2049 case 2:
2050 term.c.attr.mode |= ATTR_FAINT;
2051 break;
2052 case 3:
2053 term.c.attr.mode |= ATTR_ITALIC;
2054 break;
2055 case 4:
2056 term.c.attr.mode |= ATTR_UNDERLINE;
2057 break;
2058 case 5: /* slow blink */
2059 /* FALLTHROUGH */
2060 case 6: /* rapid blink */
2061 term.c.attr.mode |= ATTR_BLINK;
2062 break;
2063 case 7:
2064 term.c.attr.mode |= ATTR_REVERSE;
2065 break;
2066 case 8:
2067 term.c.attr.mode |= ATTR_INVISIBLE;
2068 break;
2069 case 9:
2070 term.c.attr.mode |= ATTR_STRUCK;
2071 break;
2072 case 22:
2073 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
2074 break;
2075 case 23:
2076 term.c.attr.mode &= ~ATTR_ITALIC;
2077 break;
2078 case 24:
2079 term.c.attr.mode &= ~ATTR_UNDERLINE;
2080 break;
2081 case 25:
2082 term.c.attr.mode &= ~ATTR_BLINK;
2083 break;
2084 case 27:
2085 term.c.attr.mode &= ~ATTR_REVERSE;
2086 break;
2087 case 28:
2088 term.c.attr.mode &= ~ATTR_INVISIBLE;
2089 break;
2090 case 29:
2091 term.c.attr.mode &= ~ATTR_STRUCK;
2092 break;
2093 case 38:
2094 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2095 term.c.attr.fg = idx;
2096 break;
2097 case 39:
2098 term.c.attr.fg = defaultfg;
2099 break;
2100 case 48:
2101 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2102 term.c.attr.bg = idx;
2103 break;
2104 case 49:
2105 term.c.attr.bg = defaultbg;
2106 break;
2107 default:
2108 if (BETWEEN(attr[i], 30, 37)) {
2109 term.c.attr.fg = attr[i] - 30;
2110 } else if (BETWEEN(attr[i], 40, 47)) {
2111 term.c.attr.bg = attr[i] - 40;
2112 } else if (BETWEEN(attr[i], 90, 97)) {
2113 term.c.attr.fg = attr[i] - 90 + 8;
2114 } else if (BETWEEN(attr[i], 100, 107)) {
2115 term.c.attr.bg = attr[i] - 100 + 8;
2116 } else {
2117 fprintf(stderr,
2118 "erresc(default): gfx attr %d unknown\n",
2119 attr[i]), csidump();
2120 }
2121 break;
2122 }
2123 }
2124 }
2125
2126 void
2127 tsetscroll(int t, int b)
2128 {
2129 int temp;
2130
2131 LIMIT(t, 0, term.row-1);
2132 LIMIT(b, 0, term.row-1);
2133 if (t > b) {
2134 temp = t;
2135 t = b;
2136 b = temp;
2137 }
2138 term.top = t;
2139 term.bot = b;
2140 }
2141
2142 void
2143 tsetmode(int priv, int set, int *args, int narg)
2144 {
2145 int *lim, mode;
2146 int alt;
2147
2148 for (lim = args + narg; args < lim; ++args) {
2149 if (priv) {
2150 switch (*args) {
2151 case 1: /* DECCKM -- Cursor key */
2152 MODBIT(term.mode, set, MODE_APPCURSOR);
2153 break;
2154 case 5: /* DECSCNM -- Reverse video */
2155 mode = term.mode;
2156 MODBIT(term.mode, set, MODE_REVERSE);
2157 if (mode != term.mode)
2158 redraw();
2159 break;
2160 case 6: /* DECOM -- Origin */
2161 MODBIT(term.c.state, set, CURSOR_ORIGIN);
2162 tmoveato(0, 0);
2163 break;
2164 case 7: /* DECAWM -- Auto wrap */
2165 MODBIT(term.mode, set, MODE_WRAP);
2166 break;
2167 case 0: /* Error (IGNORED) */
2168 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
2169 case 3: /* DECCOLM -- Column (IGNORED) */
2170 case 4: /* DECSCLM -- Scroll (IGNORED) */
2171 case 8: /* DECARM -- Auto repeat (IGNORED) */
2172 case 18: /* DECPFF -- Printer feed (IGNORED) */
2173 case 19: /* DECPEX -- Printer extent (IGNORED) */
2174 case 42: /* DECNRCM -- National characters (IGNORED) */
2175 case 12: /* att610 -- Start blinking cursor (IGNORED) */
2176 break;
2177 case 25: /* DECTCEM -- Text Cursor Enable Mode */
2178 MODBIT(term.mode, !set, MODE_HIDE);
2179 break;
2180 case 9: /* X10 mouse compatibility mode */
2181 xsetpointermotion(0);
2182 MODBIT(term.mode, 0, MODE_MOUSE);
2183 MODBIT(term.mode, set, MODE_MOUSEX10);
2184 break;
2185 case 1000: /* 1000: report button press */
2186 xsetpointermotion(0);
2187 MODBIT(term.mode, 0, MODE_MOUSE);
2188 MODBIT(term.mode, set, MODE_MOUSEBTN);
2189 break;
2190 case 1002: /* 1002: report motion on button press */
2191 xsetpointermotion(0);
2192 MODBIT(term.mode, 0, MODE_MOUSE);
2193 MODBIT(term.mode, set, MODE_MOUSEMOTION);
2194 break;
2195 case 1003: /* 1003: enable all mouse motions */
2196 xsetpointermotion(set);
2197 MODBIT(term.mode, 0, MODE_MOUSE);
2198 MODBIT(term.mode, set, MODE_MOUSEMANY);
2199 break;
2200 case 1004: /* 1004: send focus events to tty */
2201 MODBIT(term.mode, set, MODE_FOCUS);
2202 break;
2203 case 1006: /* 1006: extended reporting mode */
2204 MODBIT(term.mode, set, MODE_MOUSESGR);
2205 break;
2206 case 1034:
2207 MODBIT(term.mode, set, MODE_8BIT);
2208 break;
2209 case 1049: /* swap screen & set/restore cursor as xterm */
2210 if (!allowaltscreen)
2211 break;
2212 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2213 /* FALLTHROUGH */
2214 case 47: /* swap screen */
2215 case 1047:
2216 if (!allowaltscreen)
2217 break;
2218 alt = IS_SET(MODE_ALTSCREEN);
2219 if (alt) {
2220 tclearregion(0, 0, term.col-1,
2221 term.row-1);
2222 }
2223 if (set ^ alt) /* set is always 1 or 0 */
2224 tswapscreen();
2225 if (*args != 1049)
2226 break;
2227 /* FALLTHROUGH */
2228 case 1048:
2229 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2230 break;
2231 case 2004: /* 2004: bracketed paste mode */
2232 MODBIT(term.mode, set, MODE_BRCKTPASTE);
2233 break;
2234 /* Not implemented mouse modes. See comments there. */
2235 case 1001: /* mouse highlight mode; can hang the
2236 terminal by design when implemented. */
2237 case 1005: /* UTF-8 mouse mode; will confuse
2238 applications not supporting UTF-8
2239 and luit. */
2240 case 1015: /* urxvt mangled mouse mode; incompatible
2241 and can be mistaken for other control
2242 codes. */
2243 default:
2244 fprintf(stderr,
2245 "erresc: unknown private set/reset mode %d\n",
2246 *args);
2247 break;
2248 }
2249 } else {
2250 switch (*args) {
2251 case 0: /* Error (IGNORED) */
2252 break;
2253 case 2: /* KAM -- keyboard action */
2254 MODBIT(term.mode, set, MODE_KBDLOCK);
2255 break;
2256 case 4: /* IRM -- Insertion-replacement */
2257 MODBIT(term.mode, set, MODE_INSERT);
2258 break;
2259 case 12: /* SRM -- Send/Receive */
2260 MODBIT(term.mode, !set, MODE_ECHO);
2261 break;
2262 case 20: /* LNM -- Linefeed/new line */
2263 MODBIT(term.mode, set, MODE_CRLF);
2264 break;
2265 default:
2266 fprintf(stderr,
2267 "erresc: unknown set/reset mode %d\n",
2268 *args);
2269 break;
2270 }
2271 }
2272 }
2273 }
2274
2275 void
2276 csihandle(void)
2277 {
2278 char buf[40];
2279 int len;
2280
2281 switch (csiescseq.mode[0]) {
2282 default:
2283 unknown:
2284 fprintf(stderr, "erresc: unknown csi ");
2285 csidump();
2286 /* die(""); */
2287 break;
2288 case '@': /* ICH -- Insert <n> blank char */
2289 DEFAULT(csiescseq.arg[0], 1);
2290 tinsertblank(csiescseq.arg[0]);
2291 break;
2292 case 'A': /* CUU -- Cursor <n> Up */
2293 DEFAULT(csiescseq.arg[0], 1);
2294 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2295 break;
2296 case 'B': /* CUD -- Cursor <n> Down */
2297 case 'e': /* VPR --Cursor <n> Down */
2298 DEFAULT(csiescseq.arg[0], 1);
2299 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2300 break;
2301 case 'i': /* MC -- Media Copy */
2302 switch (csiescseq.arg[0]) {
2303 case 0:
2304 tdump();
2305 break;
2306 case 1:
2307 tdumpline(term.c.y);
2308 break;
2309 case 2:
2310 tdumpsel();
2311 break;
2312 case 4:
2313 term.mode &= ~MODE_PRINT;
2314 break;
2315 case 5:
2316 term.mode |= MODE_PRINT;
2317 break;
2318 }
2319 break;
2320 case 'c': /* DA -- Device Attributes */
2321 if (csiescseq.arg[0] == 0)
2322 ttywrite(vtiden, sizeof(vtiden) - 1);
2323 break;
2324 case 'C': /* CUF -- Cursor <n> Forward */
2325 case 'a': /* HPR -- Cursor <n> Forward */
2326 DEFAULT(csiescseq.arg[0], 1);
2327 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2328 break;
2329 case 'D': /* CUB -- Cursor <n> Backward */
2330 DEFAULT(csiescseq.arg[0], 1);
2331 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2332 break;
2333 case 'E': /* CNL -- Cursor <n> Down and first col */
2334 DEFAULT(csiescseq.arg[0], 1);
2335 tmoveto(0, term.c.y+csiescseq.arg[0]);
2336 break;
2337 case 'F': /* CPL -- Cursor <n> Up and first col */
2338 DEFAULT(csiescseq.arg[0], 1);
2339 tmoveto(0, term.c.y-csiescseq.arg[0]);
2340 break;
2341 case 'g': /* TBC -- Tabulation clear */
2342 switch (csiescseq.arg[0]) {
2343 case 0: /* clear current tab stop */
2344 term.tabs[term.c.x] = 0;
2345 break;
2346 case 3: /* clear all the tabs */
2347 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2348 break;
2349 default:
2350 goto unknown;
2351 }
2352 break;
2353 case 'G': /* CHA -- Move to <col> */
2354 case '`': /* HPA */
2355 DEFAULT(csiescseq.arg[0], 1);
2356 tmoveto(csiescseq.arg[0]-1, term.c.y);
2357 break;
2358 case 'H': /* CUP -- Move to <row> <col> */
2359 case 'f': /* HVP */
2360 DEFAULT(csiescseq.arg[0], 1);
2361 DEFAULT(csiescseq.arg[1], 1);
2362 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2363 break;
2364 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2365 DEFAULT(csiescseq.arg[0], 1);
2366 tputtab(csiescseq.arg[0]);
2367 break;
2368 case 'J': /* ED -- Clear screen */
2369 selclear(NULL);
2370 switch (csiescseq.arg[0]) {
2371 case 0: /* below */
2372 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2373 if (term.c.y < term.row-1) {
2374 tclearregion(0, term.c.y+1, term.col-1,
2375 term.row-1);
2376 }
2377 break;
2378 case 1: /* above */
2379 if (term.c.y > 1)
2380 tclearregion(0, 0, term.col-1, term.c.y-1);
2381 tclearregion(0, term.c.y, term.c.x, term.c.y);
2382 break;
2383 case 2: /* all */
2384 tclearregion(0, 0, term.col-1, term.row-1);
2385 break;
2386 default:
2387 goto unknown;
2388 }
2389 break;
2390 case 'K': /* EL -- Clear line */
2391 switch (csiescseq.arg[0]) {
2392 case 0: /* right */
2393 tclearregion(term.c.x, term.c.y, term.col-1,
2394 term.c.y);
2395 break;
2396 case 1: /* left */
2397 tclearregion(0, term.c.y, term.c.x, term.c.y);
2398 break;
2399 case 2: /* all */
2400 tclearregion(0, term.c.y, term.col-1, term.c.y);
2401 break;
2402 }
2403 break;
2404 case 'S': /* SU -- Scroll <n> line up */
2405 DEFAULT(csiescseq.arg[0], 1);
2406 tscrollup(term.top, csiescseq.arg[0]);
2407 break;
2408 case 'T': /* SD -- Scroll <n> line down */
2409 DEFAULT(csiescseq.arg[0], 1);
2410 tscrolldown(term.top, csiescseq.arg[0]);
2411 break;
2412 case 'L': /* IL -- Insert <n> blank lines */
2413 DEFAULT(csiescseq.arg[0], 1);
2414 tinsertblankline(csiescseq.arg[0]);
2415 break;
2416 case 'l': /* RM -- Reset Mode */
2417 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2418 break;
2419 case 'M': /* DL -- Delete <n> lines */
2420 DEFAULT(csiescseq.arg[0], 1);
2421 tdeleteline(csiescseq.arg[0]);
2422 break;
2423 case 'X': /* ECH -- Erase <n> char */
2424 DEFAULT(csiescseq.arg[0], 1);
2425 tclearregion(term.c.x, term.c.y,
2426 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2427 break;
2428 case 'P': /* DCH -- Delete <n> char */
2429 DEFAULT(csiescseq.arg[0], 1);
2430 tdeletechar(csiescseq.arg[0]);
2431 break;
2432 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2433 DEFAULT(csiescseq.arg[0], 1);
2434 tputtab(-csiescseq.arg[0]);
2435 break;
2436 case 'd': /* VPA -- Move to <row> */
2437 DEFAULT(csiescseq.arg[0], 1);
2438 tmoveato(term.c.x, csiescseq.arg[0]-1);
2439 break;
2440 case 'h': /* SM -- Set terminal mode */
2441 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2442 break;
2443 case 'm': /* SGR -- Terminal attribute (color) */
2444 tsetattr(csiescseq.arg, csiescseq.narg);
2445 break;
2446 case 'n': /* DSR – Device Status Report (cursor position) */
2447 if (csiescseq.arg[0] == 6) {
2448 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2449 term.c.y+1, term.c.x+1);
2450 ttywrite(buf, len);
2451 }
2452 break;
2453 case 'r': /* DECSTBM -- Set Scrolling Region */
2454 if (csiescseq.priv) {
2455 goto unknown;
2456 } else {
2457 DEFAULT(csiescseq.arg[0], 1);
2458 DEFAULT(csiescseq.arg[1], term.row);
2459 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2460 tmoveato(0, 0);
2461 }
2462 break;
2463 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2464 tcursor(CURSOR_SAVE);
2465 break;
2466 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2467 tcursor(CURSOR_LOAD);
2468 break;
2469 case ' ':
2470 switch (csiescseq.mode[1]) {
2471 case 'q': /* DECSCUSR -- Set Cursor Style */
2472 DEFAULT(csiescseq.arg[0], 1);
2473 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2474 goto unknown;
2475 }
2476 xw.cursor = csiescseq.arg[0];
2477 break;
2478 default:
2479 goto unknown;
2480 }
2481 break;
2482 }
2483 }
2484
2485 void
2486 csidump(void)
2487 {
2488 int i;
2489 uint c;
2490
2491 printf("ESC[");
2492 for (i = 0; i < csiescseq.len; i++) {
2493 c = csiescseq.buf[i] & 0xff;
2494 if (isprint(c)) {
2495 putchar(c);
2496 } else if (c == '\n') {
2497 printf("(\\n)");
2498 } else if (c == '\r') {
2499 printf("(\\r)");
2500 } else if (c == 0x1b) {
2501 printf("(\\e)");
2502 } else {
2503 printf("(%02x)", c);
2504 }
2505 }
2506 putchar('\n');
2507 }
2508
2509 void
2510 csireset(void)
2511 {
2512 memset(&csiescseq, 0, sizeof(csiescseq));
2513 }
2514
2515 void
2516 strhandle(void)
2517 {
2518 char *p = NULL;
2519 int j, narg, par;
2520
2521 term.esc &= ~(ESC_STR_END|ESC_STR);
2522 strparse();
2523 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2524
2525 switch (strescseq.type) {
2526 case ']': /* OSC -- Operating System Command */
2527 switch (par) {
2528 case 0:
2529 case 1:
2530 case 2:
2531 if (narg > 1)
2532 xsettitle(strescseq.args[1]);
2533 return;
2534 case 4: /* color set */
2535 if (narg < 3)
2536 break;
2537 p = strescseq.args[2];
2538 /* FALLTHROUGH */
2539 case 104: /* color reset, here p = NULL */
2540 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2541 if (xsetcolorname(j, p)) {
2542 fprintf(stderr, "erresc: invalid color %s\n", p);
2543 } else {
2544 /*
2545 * TODO if defaultbg color is changed, borders
2546 * are dirty
2547 */
2548 redraw();
2549 }
2550 return;
2551 }
2552 break;
2553 case 'k': /* old title set compatibility */
2554 xsettitle(strescseq.args[0]);
2555 return;
2556 case 'P': /* DCS -- Device Control String */
2557 term.mode |= ESC_DCS;
2558 case '_': /* APC -- Application Program Command */
2559 case '^': /* PM -- Privacy Message */
2560 return;
2561 }
2562
2563 fprintf(stderr, "erresc: unknown str ");
2564 strdump();
2565 }
2566
2567 void
2568 strparse(void)
2569 {
2570 int c;
2571 char *p = strescseq.buf;
2572
2573 strescseq.narg = 0;
2574 strescseq.buf[strescseq.len] = '\0';
2575
2576 if (*p == '\0')
2577 return;
2578
2579 while (strescseq.narg < STR_ARG_SIZ) {
2580 strescseq.args[strescseq.narg++] = p;
2581 while ((c = *p) != ';' && c != '\0')
2582 ++p;
2583 if (c == '\0')
2584 return;
2585 *p++ = '\0';
2586 }
2587 }
2588
2589 void
2590 strdump(void)
2591 {
2592 int i;
2593 uint c;
2594
2595 printf("ESC%c", strescseq.type);
2596 for (i = 0; i < strescseq.len; i++) {
2597 c = strescseq.buf[i] & 0xff;
2598 if (c == '\0') {
2599 return;
2600 } else if (isprint(c)) {
2601 putchar(c);
2602 } else if (c == '\n') {
2603 printf("(\\n)");
2604 } else if (c == '\r') {
2605 printf("(\\r)");
2606 } else if (c == 0x1b) {
2607 printf("(\\e)");
2608 } else {
2609 printf("(%02x)", c);
2610 }
2611 }
2612 printf("ESC\\\n");
2613 }
2614
2615 void
2616 strreset(void)
2617 {
2618 memset(&strescseq, 0, sizeof(strescseq));
2619 }
2620
2621 void
2622 sendbreak(const Arg *arg)
2623 {
2624 if (tcsendbreak(cmdfd, 0))
2625 perror("Error sending break");
2626 }
2627
2628 void
2629 tprinter(char *s, size_t len)
2630 {
2631 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
2632 fprintf(stderr, "Error writing in %s:%s\n",
2633 opt_io, strerror(errno));
2634 close(iofd);
2635 iofd = -1;
2636 }
2637 }
2638
2639 void
2640 iso14755(const Arg *arg)
2641 {
2642 char cmd[sizeof(ISO14755CMD) + NUMMAXLEN(xw.win)];
2643 FILE *p;
2644 char *us, *e, codepoint[9], uc[UTF_SIZ];
2645 unsigned long utf32;
2646
2647 snprintf(cmd, sizeof(cmd), ISO14755CMD, xw.win);
2648 if (!(p = popen(cmd, "r")))
2649 return;
2650
2651 us = fgets(codepoint, sizeof(codepoint), p);
2652 pclose(p);
2653
2654 if (!us || *us == '\0' || *us == '-' || strlen(us) > 7)
2655 return;
2656 if ((utf32 = strtoul(us, &e, 16)) == ULONG_MAX ||
2657 (*e != '\n' && *e != '\0'))
2658 return;
2659
2660 ttysend(uc, utf8encode(utf32, uc));
2661 }
2662
2663 void
2664 toggleprinter(const Arg *arg)
2665 {
2666 term.mode ^= MODE_PRINT;
2667 }
2668
2669 void
2670 printscreen(const Arg *arg)
2671 {
2672 tdump();
2673 }
2674
2675 void
2676 printsel(const Arg *arg)
2677 {
2678 tdumpsel();
2679 }
2680
2681 void
2682 tdumpsel(void)
2683 {
2684 char *ptr;
2685
2686 if ((ptr = getsel())) {
2687 tprinter(ptr, strlen(ptr));
2688 free(ptr);
2689 }
2690 }
2691
2692 void
2693 tdumpline(int n)
2694 {
2695 char buf[UTF_SIZ];
2696 Glyph *bp, *end;
2697
2698 bp = &term.line[n][0];
2699 end = &bp[MIN(tlinelen(n), term.col) - 1];
2700 if (bp != end || bp->u != ' ') {
2701 for ( ;bp <= end; ++bp)
2702 tprinter(buf, utf8encode(bp->u, buf));
2703 }
2704 tprinter("\n", 1);
2705 }
2706
2707 void
2708 tdump(void)
2709 {
2710 int i;
2711
2712 for (i = 0; i < term.row; ++i)
2713 tdumpline(i);
2714 }
2715
2716 void
2717 tputtab(int n)
2718 {
2719 uint x = term.c.x;
2720
2721 if (n > 0) {
2722 while (x < term.col && n--)
2723 for (++x; x < term.col && !term.tabs[x]; ++x)
2724 /* nothing */ ;
2725 } else if (n < 0) {
2726 while (x > 0 && n++)
2727 for (--x; x > 0 && !term.tabs[x]; --x)
2728 /* nothing */ ;
2729 }
2730 term.c.x = LIMIT(x, 0, term.col-1);
2731 }
2732
2733 void
2734 techo(Rune u)
2735 {
2736 if (ISCONTROL(u)) { /* control code */
2737 if (u & 0x80) {
2738 u &= 0x7f;
2739 tputc('^');
2740 tputc('[');
2741 } else if (u != '\n' && u != '\r' && u != '\t') {
2742 u ^= 0x40;
2743 tputc('^');
2744 }
2745 }
2746 tputc(u);
2747 }
2748
2749 void
2750 tdefutf8(char ascii)
2751 {
2752 if (ascii == 'G')
2753 term.mode |= MODE_UTF8;
2754 else if (ascii == '@')
2755 term.mode &= ~MODE_UTF8;
2756 }
2757
2758 void
2759 tdeftran(char ascii)
2760 {
2761 static char cs[] = "0B";
2762 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2763 char *p;
2764
2765 if ((p = strchr(cs, ascii)) == NULL) {
2766 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2767 } else {
2768 term.trantbl[term.icharset] = vcs[p - cs];
2769 }
2770 }
2771
2772 void
2773 tdectest(char c)
2774 {
2775 int x, y;
2776
2777 if (c == '8') { /* DEC screen alignment test. */
2778 for (x = 0; x < term.col; ++x) {
2779 for (y = 0; y < term.row; ++y)
2780 tsetchar('E', &term.c.attr, x, y);
2781 }
2782 }
2783 }
2784
2785 void
2786 tstrsequence(uchar c)
2787 {
2788 strreset();
2789
2790 switch (c) {
2791 case 0x90: /* DCS -- Device Control String */
2792 c = 'P';
2793 term.esc |= ESC_DCS;
2794 break;
2795 case 0x9f: /* APC -- Application Program Command */
2796 c = '_';
2797 break;
2798 case 0x9e: /* PM -- Privacy Message */
2799 c = '^';
2800 break;
2801 case 0x9d: /* OSC -- Operating System Command */
2802 c = ']';
2803 break;
2804 }
2805 strescseq.type = c;
2806 term.esc |= ESC_STR;
2807 }
2808
2809 void
2810 tcontrolcode(uchar ascii)
2811 {
2812 switch (ascii) {
2813 case '\t': /* HT */
2814 tputtab(1);
2815 return;
2816 case '\b': /* BS */
2817 tmoveto(term.c.x-1, term.c.y);
2818 return;
2819 case '\r': /* CR */
2820 tmoveto(0, term.c.y);
2821 return;
2822 case '\f': /* LF */
2823 case '\v': /* VT */
2824 case '\n': /* LF */
2825 /* go to first col if the mode is set */
2826 tnewline(IS_SET(MODE_CRLF));
2827 return;
2828 case '\a': /* BEL */
2829 if (term.esc & ESC_STR_END) {
2830 /* backwards compatibility to xterm */
2831 strhandle();
2832 } else {
2833 if (!(xw.state & WIN_FOCUSED))
2834 xseturgency(1);
2835 if (bellvolume)
2836 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2837 }
2838 break;
2839 case '\033': /* ESC */
2840 csireset();
2841 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2842 term.esc |= ESC_START;
2843 return;
2844 case '\016': /* SO (LS1 -- Locking shift 1) */
2845 case '\017': /* SI (LS0 -- Locking shift 0) */
2846 term.charset = 1 - (ascii - '\016');
2847 return;
2848 case '\032': /* SUB */
2849 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2850 case '\030': /* CAN */
2851 csireset();
2852 break;
2853 case '\005': /* ENQ (IGNORED) */
2854 case '\000': /* NUL (IGNORED) */
2855 case '\021': /* XON (IGNORED) */
2856 case '\023': /* XOFF (IGNORED) */
2857 case 0177: /* DEL (IGNORED) */
2858 return;
2859 case 0x80: /* TODO: PAD */
2860 case 0x81: /* TODO: HOP */
2861 case 0x82: /* TODO: BPH */
2862 case 0x83: /* TODO: NBH */
2863 case 0x84: /* TODO: IND */
2864 break;
2865 case 0x85: /* NEL -- Next line */
2866 tnewline(1); /* always go to first col */
2867 break;
2868 case 0x86: /* TODO: SSA */
2869 case 0x87: /* TODO: ESA */
2870 break;
2871 case 0x88: /* HTS -- Horizontal tab stop */
2872 term.tabs[term.c.x] = 1;
2873 break;
2874 case 0x89: /* TODO: HTJ */
2875 case 0x8a: /* TODO: VTS */
2876 case 0x8b: /* TODO: PLD */
2877 case 0x8c: /* TODO: PLU */
2878 case 0x8d: /* TODO: RI */
2879 case 0x8e: /* TODO: SS2 */
2880 case 0x8f: /* TODO: SS3 */
2881 case 0x91: /* TODO: PU1 */
2882 case 0x92: /* TODO: PU2 */
2883 case 0x93: /* TODO: STS */
2884 case 0x94: /* TODO: CCH */
2885 case 0x95: /* TODO: MW */
2886 case 0x96: /* TODO: SPA */
2887 case 0x97: /* TODO: EPA */
2888 case 0x98: /* TODO: SOS */
2889 case 0x99: /* TODO: SGCI */
2890 break;
2891 case 0x9a: /* DECID -- Identify Terminal */
2892 ttywrite(vtiden, sizeof(vtiden) - 1);
2893 break;
2894 case 0x9b: /* TODO: CSI */
2895 case 0x9c: /* TODO: ST */
2896 break;
2897 case 0x90: /* DCS -- Device Control String */
2898 case 0x9d: /* OSC -- Operating System Command */
2899 case 0x9e: /* PM -- Privacy Message */
2900 case 0x9f: /* APC -- Application Program Command */
2901 tstrsequence(ascii);
2902 return;
2903 }
2904 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2905 term.esc &= ~(ESC_STR_END|ESC_STR);
2906 }
2907
2908 /*
2909 * returns 1 when the sequence is finished and it hasn't to read
2910 * more characters for this sequence, otherwise 0
2911 */
2912 int
2913 eschandle(uchar ascii)
2914 {
2915 switch (ascii) {
2916 case '[':
2917 term.esc |= ESC_CSI;
2918 return 0;
2919 case '#':
2920 term.esc |= ESC_TEST;
2921 return 0;
2922 case '%':
2923 term.esc |= ESC_UTF8;
2924 return 0;
2925 case 'P': /* DCS -- Device Control String */
2926 case '_': /* APC -- Application Program Command */
2927 case '^': /* PM -- Privacy Message */
2928 case ']': /* OSC -- Operating System Command */
2929 case 'k': /* old title set compatibility */
2930 tstrsequence(ascii);
2931 return 0;
2932 case 'n': /* LS2 -- Locking shift 2 */
2933 case 'o': /* LS3 -- Locking shift 3 */
2934 term.charset = 2 + (ascii - 'n');
2935 break;
2936 case '(': /* GZD4 -- set primary charset G0 */
2937 case ')': /* G1D4 -- set secondary charset G1 */
2938 case '*': /* G2D4 -- set tertiary charset G2 */
2939 case '+': /* G3D4 -- set quaternary charset G3 */
2940 term.icharset = ascii - '(';
2941 term.esc |= ESC_ALTCHARSET;
2942 return 0;
2943 case 'D': /* IND -- Linefeed */
2944 if (term.c.y == term.bot) {
2945 tscrollup(term.top, 1);
2946 } else {
2947 tmoveto(term.c.x, term.c.y+1);
2948 }
2949 break;
2950 case 'E': /* NEL -- Next line */
2951 tnewline(1); /* always go to first col */
2952 break;
2953 case 'H': /* HTS -- Horizontal tab stop */
2954 term.tabs[term.c.x] = 1;
2955 break;
2956 case 'M': /* RI -- Reverse index */
2957 if (term.c.y == term.top) {
2958 tscrolldown(term.top, 1);
2959 } else {
2960 tmoveto(term.c.x, term.c.y-1);
2961 }
2962 break;
2963 case 'Z': /* DECID -- Identify Terminal */
2964 ttywrite(vtiden, sizeof(vtiden) - 1);
2965 break;
2966 case 'c': /* RIS -- Reset to inital state */
2967 treset();
2968 xresettitle();
2969 xloadcols();
2970 break;
2971 case '=': /* DECPAM -- Application keypad */
2972 term.mode |= MODE_APPKEYPAD;
2973 break;
2974 case '>': /* DECPNM -- Normal keypad */
2975 term.mode &= ~MODE_APPKEYPAD;
2976 break;
2977 case '7': /* DECSC -- Save Cursor */
2978 tcursor(CURSOR_SAVE);
2979 break;
2980 case '8': /* DECRC -- Restore Cursor */
2981 tcursor(CURSOR_LOAD);
2982 break;
2983 case '\\': /* ST -- String Terminator */
2984 if (term.esc & ESC_STR_END)
2985 strhandle();
2986 break;
2987 default:
2988 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2989 (uchar) ascii, isprint(ascii)? ascii:'.');
2990 break;
2991 }
2992 return 1;
2993 }
2994
2995 void
2996 tputc(Rune u)
2997 {
2998 char c[UTF_SIZ];
2999 int control;
3000 int width, len;
3001 Glyph *gp;
3002
3003 control = ISCONTROL(u);
3004 if (!IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
3005 c[0] = u;
3006 width = len = 1;
3007 } else {
3008 len = utf8encode(u, c);
3009 if (!control && (width = wcwidth(u)) == -1) {
3010 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
3011 width = 1;
3012 }
3013 }
3014
3015 if (IS_SET(MODE_PRINT))
3016 tprinter(c, len);
3017
3018 /*
3019 * STR sequence must be checked before anything else
3020 * because it uses all following characters until it
3021 * receives a ESC, a SUB, a ST or any other C1 control
3022 * character.
3023 */
3024 if (term.esc & ESC_STR) {
3025 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
3026 ISCONTROLC1(u)) {
3027 term.esc &= ~(ESC_START|ESC_STR|ESC_DCS);
3028 if (IS_SET(MODE_SIXEL)) {
3029 /* TODO: render sixel */;
3030 term.mode &= ~MODE_SIXEL;
3031 return;
3032 }
3033 term.esc |= ESC_STR_END;
3034 goto check_control_code;
3035 }
3036
3037
3038 if (IS_SET(MODE_SIXEL)) {
3039 /* TODO: implement sixel mode */
3040 return;
3041 }
3042 if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
3043 term.mode |= MODE_SIXEL;
3044
3045 if (strescseq.len+len >= sizeof(strescseq.buf)-1) {
3046 /*
3047 * Here is a bug in terminals. If the user never sends
3048 * some code to stop the str or esc command, then st
3049 * will stop responding. But this is better than
3050 * silently failing with unknown characters. At least
3051 * then users will report back.
3052 *
3053 * In the case users ever get fixed, here is the code:
3054 */
3055 /*
3056 * term.esc = 0;
3057 * strhandle();
3058 */
3059 return;
3060 }
3061
3062 memmove(&strescseq.buf[strescseq.len], c, len);
3063 strescseq.len += len;
3064 return;
3065 }
3066
3067 check_control_code:
3068 /*
3069 * Actions of control codes must be performed as soon they arrive
3070 * because they can be embedded inside a control sequence, and
3071 * they must not cause conflicts with sequences.
3072 */
3073 if (control) {
3074 tcontrolcode(u);
3075 /*
3076 * control codes are not shown ever
3077 */
3078 return;
3079 } else if (term.esc & ESC_START) {
3080 if (term.esc & ESC_CSI) {
3081 csiescseq.buf[csiescseq.len++] = u;
3082 if (BETWEEN(u, 0x40, 0x7E)
3083 || csiescseq.len >= \
3084 sizeof(csiescseq.buf)-1) {
3085 term.esc = 0;
3086 csiparse();
3087 csihandle();
3088 }
3089 return;
3090 } else if (term.esc & ESC_UTF8) {
3091 tdefutf8(u);
3092 } else if (term.esc & ESC_ALTCHARSET) {
3093 tdeftran(u);
3094 } else if (term.esc & ESC_TEST) {
3095 tdectest(u);
3096 } else {
3097 if (!eschandle(u))
3098 return;
3099 /* sequence already finished */
3100 }
3101 term.esc = 0;
3102 /*
3103 * All characters which form part of a sequence are not
3104 * printed
3105 */
3106 return;
3107 }
3108 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
3109 selclear(NULL);
3110
3111 gp = &term.line[term.c.y][term.c.x];
3112 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
3113 gp->mode |= ATTR_WRAP;
3114 tnewline(1);
3115 gp = &term.line[term.c.y][term.c.x];
3116 }
3117
3118 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
3119 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
3120
3121 if (term.c.x+width > term.col) {
3122 tnewline(1);
3123 gp = &term.line[term.c.y][term.c.x];
3124 }
3125
3126 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
3127
3128 if (width == 2) {
3129 gp->mode |= ATTR_WIDE;
3130 if (term.c.x+1 < term.col) {
3131 gp[1].u = '\0';
3132 gp[1].mode = ATTR_WDUMMY;
3133 }
3134 }
3135 if (term.c.x+width < term.col) {
3136 tmoveto(term.c.x+width, term.c.y);
3137 } else {
3138 term.c.state |= CURSOR_WRAPNEXT;
3139 }
3140 }
3141
3142 void
3143 tresize(int col, int row)
3144 {
3145 int i;
3146 int minrow = MIN(row, term.row);
3147 int mincol = MIN(col, term.col);
3148 int *bp;
3149 TCursor c;
3150
3151 if (col < 1 || row < 1) {
3152 fprintf(stderr,
3153 "tresize: error resizing to %dx%d\n", col, row);
3154 return;
3155 }
3156
3157 /*
3158 * slide screen to keep cursor where we expect it -
3159 * tscrollup would work here, but we can optimize to
3160 * memmove because we're freeing the earlier lines
3161 */
3162 for (i = 0; i <= term.c.y - row; i++) {
3163 free(term.line[i]);
3164 free(term.alt[i]);
3165 }
3166 /* ensure that both src and dst are not NULL */
3167 if (i > 0) {
3168 memmove(term.line, term.line + i, row * sizeof(Line));
3169 memmove(term.alt, term.alt + i, row * sizeof(Line));
3170 }
3171 for (i += row; i < term.row; i++) {
3172 free(term.line[i]);
3173 free(term.alt[i]);
3174 }
3175
3176 /* resize to new width */
3177 term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
3178
3179 /* resize to new height */
3180 term.line = xrealloc(term.line, row * sizeof(Line));
3181 term.alt = xrealloc(term.alt, row * sizeof(Line));
3182 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
3183 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
3184
3185 /* resize each row to new width, zero-pad if needed */
3186 for (i = 0; i < minrow; i++) {
3187 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
3188 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
3189 }
3190
3191 /* allocate any new rows */
3192 for (/* i == minrow */; i < row; i++) {
3193 term.line[i] = xmalloc(col * sizeof(Glyph));
3194 term.alt[i] = xmalloc(col * sizeof(Glyph));
3195 }
3196 if (col > term.col) {
3197 bp = term.tabs + term.col;
3198
3199 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
3200 while (--bp > term.tabs && !*bp)
3201 /* nothing */ ;
3202 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
3203 *bp = 1;
3204 }
3205 /* update terminal size */
3206 term.col = col;
3207 term.row = row;
3208 /* reset scrolling region */
3209 tsetscroll(0, row-1);
3210 /* make use of the LIMIT in tmoveto */
3211 tmoveto(term.c.x, term.c.y);
3212 /* Clearing both screens (it makes dirty all lines) */
3213 c = term.c;
3214 for (i = 0; i < 2; i++) {
3215 if (mincol < col && 0 < minrow) {
3216 tclearregion(mincol, 0, col - 1, minrow - 1);
3217 }
3218 if (0 < col && minrow < row) {
3219 tclearregion(0, minrow, col - 1, row - 1);
3220 }
3221 tswapscreen();
3222 tcursor(CURSOR_LOAD);
3223 }
3224 term.c = c;
3225 }
3226
3227 void
3228 xresize(int col, int row)
3229 {
3230 xw.tw = MAX(1, col * xw.cw);
3231 xw.th = MAX(1, row * xw.ch);
3232
3233 XFreePixmap(xw.dpy, xw.buf);
3234 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3235 DefaultDepth(xw.dpy, xw.scr));
3236 XftDrawChange(xw.draw, xw.buf);
3237 xclear(0, 0, xw.w, xw.h);
3238 }
3239
3240 ushort
3241 sixd_to_16bit(int x)
3242 {
3243 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
3244 }
3245
3246 int
3247 xloadcolor(int i, const char *name, Color *ncolor)
3248 {
3249 XRenderColor color = { .alpha = 0xffff };
3250
3251 if (!name) {
3252 if (BETWEEN(i, 16, 255)) { /* 256 color */
3253 if (i < 6*6*6+16) { /* same colors as xterm */
3254 color.red = sixd_to_16bit( ((i-16)/36)%6 );
3255 color.green = sixd_to_16bit( ((i-16)/6) %6 );
3256 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
3257 } else { /* greyscale */
3258 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
3259 color.green = color.blue = color.red;
3260 }
3261 return XftColorAllocValue(xw.dpy, xw.vis,
3262 xw.cmap, &color, ncolor);
3263 } else
3264 name = colorname[i];
3265 }
3266
3267 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
3268 }
3269
3270 void
3271 xloadcols(void)
3272 {
3273 int i;
3274 static int loaded;
3275 Color *cp;
3276
3277 if (loaded) {
3278 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
3279 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
3280 }
3281
3282 for (i = 0; i < LEN(dc.col); i++)
3283 if (!xloadcolor(i, NULL, &dc.col[i])) {
3284 if (colorname[i])
3285 die("Could not allocate color '%s'\n", colorname[i]);
3286 else
3287 die("Could not allocate color %d\n", i);
3288 }
3289 loaded = 1;
3290 }
3291
3292 int
3293 xsetcolorname(int x, const char *name)
3294 {
3295 Color ncolor;
3296
3297 if (!BETWEEN(x, 0, LEN(dc.col)))
3298 return 1;
3299
3300
3301 if (!xloadcolor(x, name, &ncolor))
3302 return 1;
3303
3304 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
3305 dc.col[x] = ncolor;
3306
3307 return 0;
3308 }
3309
3310 /*
3311 * Absolute coordinates.
3312 */
3313 void
3314 xclear(int x1, int y1, int x2, int y2)
3315 {
3316 XftDrawRect(xw.draw,
3317 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
3318 x1, y1, x2-x1, y2-y1);
3319 }
3320
3321 void
3322 xhints(void)
3323 {
3324 XClassHint class = {opt_name ? opt_name : termname,
3325 opt_class ? opt_class : termname};
3326 XWMHints wm = {.flags = InputHint, .input = 1};
3327 XSizeHints *sizeh = NULL;
3328
3329 sizeh = XAllocSizeHints();
3330
3331 sizeh->flags = PSize | PResizeInc | PBaseSize;
3332 sizeh->height = xw.h;
3333 sizeh->width = xw.w;
3334 sizeh->height_inc = xw.ch;
3335 sizeh->width_inc = xw.cw;
3336 sizeh->base_height = 2 * borderpx;
3337 sizeh->base_width = 2 * borderpx;
3338 if (xw.isfixed) {
3339 sizeh->flags |= PMaxSize | PMinSize;
3340 sizeh->min_width = sizeh->max_width = xw.w;
3341 sizeh->min_height = sizeh->max_height = xw.h;
3342 }
3343 if (xw.gm & (XValue|YValue)) {
3344 sizeh->flags |= USPosition | PWinGravity;
3345 sizeh->x = xw.l;
3346 sizeh->y = xw.t;
3347 sizeh->win_gravity = xgeommasktogravity(xw.gm);
3348 }
3349
3350 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
3351 &class);
3352 XFree(sizeh);
3353 }
3354
3355 int
3356 xgeommasktogravity(int mask)
3357 {
3358 switch (mask & (XNegative|YNegative)) {
3359 case 0:
3360 return NorthWestGravity;
3361 case XNegative:
3362 return NorthEastGravity;
3363 case YNegative:
3364 return SouthWestGravity;
3365 }
3366
3367 return SouthEastGravity;
3368 }
3369
3370 int
3371 xloadfont(Font *f, FcPattern *pattern)
3372 {
3373 FcPattern *match;
3374 FcResult result;
3375 XGlyphInfo extents;
3376
3377 match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
3378 if (!match)
3379 return 1;
3380
3381 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3382 FcPatternDestroy(match);
3383 return 1;
3384 }
3385
3386 XftTextExtentsUtf8(xw.dpy, f->match,
3387 (const FcChar8 *) ascii_printable,
3388 strlen(ascii_printable), &extents);
3389
3390 f->set = NULL;
3391 f->pattern = FcPatternDuplicate(pattern);
3392
3393 f->ascent = f->match->ascent;
3394 f->descent = f->match->descent;
3395 f->lbearing = 0;
3396 f->rbearing = f->match->max_advance_width;
3397
3398 f->height = f->ascent + f->descent;
3399 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
3400
3401 return 0;
3402 }
3403
3404 void
3405 xloadfonts(char *fontstr, double fontsize)
3406 {
3407 FcPattern *pattern;
3408 double fontval;
3409 float ceilf(float);
3410
3411 if (fontstr[0] == '-') {
3412 pattern = XftXlfdParse(fontstr, False, False);
3413 } else {
3414 pattern = FcNameParse((FcChar8 *)fontstr);
3415 }
3416
3417 if (!pattern)
3418 die("st: can't open font %s\n", fontstr);
3419
3420 if (fontsize > 1) {
3421 FcPatternDel(pattern, FC_PIXEL_SIZE);
3422 FcPatternDel(pattern, FC_SIZE);
3423 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3424 usedfontsize = fontsize;
3425 } else {
3426 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
3427 FcResultMatch) {
3428 usedfontsize = fontval;
3429 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
3430 FcResultMatch) {
3431 usedfontsize = -1;
3432 } else {
3433 /*
3434 * Default font size is 12, if none given. This is to
3435 * have a known usedfontsize value.
3436 */
3437 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3438 usedfontsize = 12;
3439 }
3440 defaultfontsize = usedfontsize;
3441 }
3442
3443 if (xloadfont(&dc.font, pattern))
3444 die("st: can't open font %s\n", fontstr);
3445
3446 if (usedfontsize < 0) {
3447 FcPatternGetDouble(dc.font.match->pattern,
3448 FC_PIXEL_SIZE, 0, &fontval);
3449 usedfontsize = fontval;
3450 if (fontsize == 0)
3451 defaultfontsize = fontval;
3452 }
3453
3454 /* Setting character width and height. */
3455 xw.cw = ceilf(dc.font.width * cwscale);
3456 xw.ch = ceilf(dc.font.height * chscale);
3457
3458 FcPatternDel(pattern, FC_SLANT);
3459 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3460 if (xloadfont(&dc.ifont, pattern))
3461 die("st: can't open font %s\n", fontstr);
3462
3463 FcPatternDel(pattern, FC_WEIGHT);
3464 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3465 if (xloadfont(&dc.ibfont, pattern))
3466 die("st: can't open font %s\n", fontstr);
3467
3468 FcPatternDel(pattern, FC_SLANT);
3469 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3470 if (xloadfont(&dc.bfont, pattern))
3471 die("st: can't open font %s\n", fontstr);
3472
3473 FcPatternDestroy(pattern);
3474 }
3475
3476 void
3477 xunloadfont(Font *f)
3478 {
3479 XftFontClose(xw.dpy, f->match);
3480 FcPatternDestroy(f->pattern);
3481 if (f->set)
3482 FcFontSetDestroy(f->set);
3483 }
3484
3485 void
3486 xunloadfonts(void)
3487 {
3488 /* Free the loaded fonts in the font cache. */
3489 while (frclen > 0)
3490 XftFontClose(xw.dpy, frc[--frclen].font);
3491
3492 xunloadfont(&dc.font);
3493 xunloadfont(&dc.bfont);
3494 xunloadfont(&dc.ifont);
3495 xunloadfont(&dc.ibfont);
3496 }
3497
3498 void
3499 xzoom(const Arg *arg)
3500 {
3501 Arg larg;
3502
3503 larg.f = usedfontsize + arg->f;
3504 xzoomabs(&larg);
3505 }
3506
3507 void
3508 xzoomabs(const Arg *arg)
3509 {
3510 xunloadfonts();
3511 xloadfonts(usedfont, arg->f);
3512 cresize(0, 0);
3513 ttyresize();
3514 redraw();
3515 xhints();
3516 }
3517
3518 void
3519 xzoomreset(const Arg *arg)
3520 {
3521 Arg larg;
3522
3523 if (defaultfontsize > 0) {
3524 larg.f = defaultfontsize;
3525 xzoomabs(&larg);
3526 }
3527 }
3528
3529 void
3530 xinit(void)
3531 {
3532 XGCValues gcvalues;
3533 Cursor cursor;
3534 Window parent;
3535 pid_t thispid = getpid();
3536 XColor xmousefg, xmousebg;
3537
3538 if (!(xw.dpy = XOpenDisplay(NULL)))
3539 die("Can't open display\n");
3540 xw.scr = XDefaultScreen(xw.dpy);
3541 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3542
3543 /* font */
3544 if (!FcInit())
3545 die("Could not init fontconfig.\n");
3546
3547 usedfont = (opt_font == NULL)? font : opt_font;
3548 xloadfonts(usedfont, 0);
3549
3550 /* colors */
3551 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3552 xloadcols();
3553
3554 /* adjust fixed window geometry */
3555 xw.w = 2 * borderpx + term.col * xw.cw;
3556 xw.h = 2 * borderpx + term.row * xw.ch;
3557 if (xw.gm & XNegative)
3558 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3559 if (xw.gm & YNegative)
3560 xw.t += DisplayHeight(xw.dpy, xw.scr) - xw.h - 2;
3561
3562 /* Events */
3563 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3564 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3565 xw.attrs.bit_gravity = NorthWestGravity;
3566 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3567 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3568 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3569 xw.attrs.colormap = xw.cmap;
3570
3571 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
3572 parent = XRootWindow(xw.dpy, xw.scr);
3573 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3574 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3575 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3576 | CWEventMask | CWColormap, &xw.attrs);
3577
3578 memset(&gcvalues, 0, sizeof(gcvalues));
3579 gcvalues.graphics_exposures = False;
3580 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3581 &gcvalues);
3582 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3583 DefaultDepth(xw.dpy, xw.scr));
3584 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3585 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3586
3587 /* Xft rendering context */
3588 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3589
3590 /* input methods */
3591 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3592 XSetLocaleModifiers("@im=local");
3593 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3594 XSetLocaleModifiers("@im=");
3595 if ((xw.xim = XOpenIM(xw.dpy,
3596 NULL, NULL, NULL)) == NULL) {
3597 die("XOpenIM failed. Could not open input"
3598 " device.\n");
3599 }
3600 }
3601 }
3602 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3603 | XIMStatusNothing, XNClientWindow, xw.win,
3604 XNFocusWindow, xw.win, NULL);
3605 if (xw.xic == NULL)
3606 die("XCreateIC failed. Could not obtain input method.\n");
3607
3608 /* white cursor, black outline */
3609 cursor = XCreateFontCursor(xw.dpy, mouseshape);
3610 XDefineCursor(xw.dpy, xw.win, cursor);
3611
3612 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
3613 xmousefg.red = 0xffff;
3614 xmousefg.green = 0xffff;
3615 xmousefg.blue = 0xffff;
3616 }
3617
3618 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
3619 xmousebg.red = 0x0000;
3620 xmousebg.green = 0x0000;
3621 xmousebg.blue = 0x0000;
3622 }
3623
3624 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
3625
3626 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3627 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3628 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3629 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3630
3631 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3632 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3633 PropModeReplace, (uchar *)&thispid, 1);
3634
3635 xresettitle();
3636 XMapWindow(xw.dpy, xw.win);
3637 xhints();
3638 XSync(xw.dpy, False);
3639 }
3640
3641 int
3642 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
3643 {
3644 float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
3645 ushort mode, prevmode = USHRT_MAX;
3646 Font *font = &dc.font;
3647 int frcflags = FRC_NORMAL;
3648 float runewidth = xw.cw;
3649 Rune rune;
3650 FT_UInt glyphidx;
3651 FcResult fcres;
3652 FcPattern *fcpattern, *fontpattern;
3653 FcFontSet *fcsets[] = { NULL };
3654 FcCharSet *fccharset;
3655 int i, f, numspecs = 0;
3656
3657 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
3658 /* Fetch rune and mode for current glyph. */
3659 rune = glyphs[i].u;
3660 mode = glyphs[i].mode;
3661
3662 /* Skip dummy wide-character spacing. */
3663 if (mode == ATTR_WDUMMY)
3664 continue;
3665
3666 /* Determine font for glyph if different from previous glyph. */
3667 if (prevmode != mode) {
3668 prevmode = mode;
3669 font = &dc.font;
3670 frcflags = FRC_NORMAL;
3671 runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
3672 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
3673 font = &dc.ibfont;
3674 frcflags = FRC_ITALICBOLD;
3675 } else if (mode & ATTR_ITALIC) {
3676 font = &dc.ifont;
3677 frcflags = FRC_ITALIC;
3678 } else if (mode & ATTR_BOLD) {
3679 font = &dc.bfont;
3680 frcflags = FRC_BOLD;
3681 }
3682 yp = winy + font->ascent;
3683 }
3684
3685 /* Lookup character index with default font. */
3686 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
3687 if (glyphidx) {
3688 specs[numspecs].font = font->match;
3689 specs[numspecs].glyph = glyphidx;
3690 specs[numspecs].x = (short)xp;
3691 specs[numspecs].y = (short)yp;
3692 xp += runewidth;
3693 numspecs++;
3694 continue;
3695 }
3696
3697 /* Fallback on font cache, search the font cache for match. */
3698 for (f = 0; f < frclen; f++) {
3699 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
3700 /* Everything correct. */
3701 if (glyphidx && frc[f].flags == frcflags)
3702 break;
3703 /* We got a default font for a not found glyph. */
3704 if (!glyphidx && frc[f].flags == frcflags
3705 && frc[f].unicodep == rune) {
3706 break;
3707 }
3708 }
3709
3710 /* Nothing was found. Use fontconfig to find matching font. */
3711 if (f >= frclen) {
3712 if (!font->set)
3713 font->set = FcFontSort(0, font->pattern,
3714 1, 0, &fcres);
3715 fcsets[0] = font->set;
3716
3717 /*
3718 * Nothing was found in the cache. Now use
3719 * some dozen of Fontconfig calls to get the
3720 * font for one single character.
3721 *
3722 * Xft and fontconfig are design failures.
3723 */
3724 fcpattern = FcPatternDuplicate(font->pattern);
3725 fccharset = FcCharSetCreate();
3726
3727 FcCharSetAddChar(fccharset, rune);
3728 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3729 fccharset);
3730 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
3731
3732 FcConfigSubstitute(0, fcpattern,
3733 FcMatchPattern);
3734 FcDefaultSubstitute(fcpattern);
3735
3736 fontpattern = FcFontSetMatch(0, fcsets, 1,
3737 fcpattern, &fcres);
3738
3739 /*
3740 * Overwrite or create the new cache entry.
3741 */
3742 if (frclen >= LEN(frc)) {
3743 frclen = LEN(frc) - 1;
3744 XftFontClose(xw.dpy, frc[frclen].font);
3745 frc[frclen].unicodep = 0;
3746 }
3747
3748 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3749 fontpattern);
3750 frc[frclen].flags = frcflags;
3751 frc[frclen].unicodep = rune;
3752
3753 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
3754
3755 f = frclen;
3756 frclen++;
3757
3758 FcPatternDestroy(fcpattern);
3759 FcCharSetDestroy(fccharset);
3760 }
3761
3762 specs[numspecs].font = frc[f].font;
3763 specs[numspecs].glyph = glyphidx;
3764 specs[numspecs].x = (short)xp;
3765 specs[numspecs].y = (short)yp;
3766 xp += runewidth;
3767 numspecs++;
3768 }
3769
3770 return numspecs;
3771 }
3772
3773 void
3774 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
3775 {
3776 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
3777 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3778 width = charlen * xw.cw;
3779 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3780 XRenderColor colfg, colbg;
3781 XRectangle r;
3782
3783 /* Determine foreground and background colors based on mode. */
3784 if (base.fg == defaultfg) {
3785 if (base.mode & ATTR_ITALIC)
3786 base.fg = defaultitalic;
3787 else if ((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
3788 base.fg = defaultitalic;
3789 else if (base.mode & ATTR_UNDERLINE)
3790 base.fg = defaultunderline;
3791 }
3792
3793 if (IS_TRUECOL(base.fg)) {
3794 colfg.alpha = 0xffff;
3795 colfg.red = TRUERED(base.fg);
3796 colfg.green = TRUEGREEN(base.fg);
3797 colfg.blue = TRUEBLUE(base.fg);
3798 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3799 fg = &truefg;
3800 } else {
3801 fg = &dc.col[base.fg];
3802 }
3803
3804 if (IS_TRUECOL(base.bg)) {
3805 colbg.alpha = 0xffff;
3806 colbg.green = TRUEGREEN(base.bg);
3807 colbg.red = TRUERED(base.bg);
3808 colbg.blue = TRUEBLUE(base.bg);
3809 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3810 bg = &truebg;
3811 } else {
3812 bg = &dc.col[base.bg];
3813 }
3814
3815 /* Change basic system colors [0-7] to bright system colors [8-15] */
3816 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
3817 fg = &dc.col[base.fg + 8];
3818
3819 if (IS_SET(MODE_REVERSE)) {
3820 if (fg == &dc.col[defaultfg]) {
3821 fg = &dc.col[defaultbg];
3822 } else {
3823 colfg.red = ~fg->color.red;
3824 colfg.green = ~fg->color.green;
3825 colfg.blue = ~fg->color.blue;
3826 colfg.alpha = fg->color.alpha;
3827 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3828 &revfg);
3829 fg = &revfg;
3830 }
3831
3832 if (bg == &dc.col[defaultbg]) {
3833 bg = &dc.col[defaultfg];
3834 } else {
3835 colbg.red = ~bg->color.red;
3836 colbg.green = ~bg->color.green;
3837 colbg.blue = ~bg->color.blue;
3838 colbg.alpha = bg->color.alpha;
3839 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3840 &revbg);
3841 bg = &revbg;
3842 }
3843 }
3844
3845 if (base.mode & ATTR_REVERSE) {
3846 temp = fg;
3847 fg = bg;
3848 bg = temp;
3849 }
3850
3851 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
3852 colfg.red = fg->color.red / 2;
3853 colfg.green = fg->color.green / 2;
3854 colfg.blue = fg->color.blue / 2;
3855 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3856 fg = &revfg;
3857 }
3858
3859 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3860 fg = bg;
3861
3862 if (base.mode & ATTR_INVISIBLE)
3863 fg = bg;
3864
3865 /* Intelligent cleaning up of the borders. */
3866 if (x == 0) {
3867 xclear(0, (y == 0)? 0 : winy, borderpx,
3868 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3869 }
3870 if (x + charlen >= term.col) {
3871 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3872 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3873 }
3874 if (y == 0)
3875 xclear(winx, 0, winx + width, borderpx);
3876 if (y == term.row-1)
3877 xclear(winx, winy + xw.ch, winx + width, xw.h);
3878
3879 /* Clean up the region we want to draw to. */
3880 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3881
3882 /* Set the clip region because Xft is sometimes dirty. */
3883 r.x = 0;
3884 r.y = 0;
3885 r.height = xw.ch;
3886 r.width = width;
3887 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3888
3889 /* Render the glyphs. */
3890 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
3891
3892 /* Render underline and strikethrough. */
3893 if (base.mode & ATTR_UNDERLINE) {
3894 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
3895 width, 1);
3896 }
3897
3898 if (base.mode & ATTR_STRUCK) {
3899 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
3900 width, 1);
3901 }
3902
3903 /* Reset clip to none. */
3904 XftDrawSetClip(xw.draw, 0);
3905 }
3906
3907 void
3908 xdrawglyph(Glyph g, int x, int y)
3909 {
3910 int numspecs;
3911 XftGlyphFontSpec spec;
3912
3913 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
3914 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
3915 }
3916
3917 void
3918 xdrawcursor(void)
3919 {
3920 static int oldx = 0, oldy = 0;
3921 int curx;
3922 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
3923 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3924 Color drawcol;
3925
3926 LIMIT(oldx, 0, term.col-1);
3927 LIMIT(oldy, 0, term.row-1);
3928
3929 curx = term.c.x;
3930
3931 /* adjust position if in dummy */
3932 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
3933 oldx--;
3934 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3935 curx--;
3936
3937 /* remove the old cursor */
3938 og = term.line[oldy][oldx];
3939 if (ena_sel && selected(oldx, oldy))
3940 og.mode ^= ATTR_REVERSE;
3941 xdrawglyph(og, oldx, oldy);
3942
3943 g.u = term.line[term.c.y][term.c.x].u;
3944
3945 /*
3946 * Select the right color for the right mode.
3947 */
3948 if (IS_SET(MODE_REVERSE)) {
3949 g.mode |= ATTR_REVERSE;
3950 g.bg = defaultfg;
3951 if (ena_sel && selected(term.c.x, term.c.y)) {
3952 drawcol = dc.col[defaultcs];
3953 g.fg = defaultrcs;
3954 } else {
3955 drawcol = dc.col[defaultrcs];
3956 g.fg = defaultcs;
3957 }
3958 } else {
3959 if (ena_sel && selected(term.c.x, term.c.y)) {
3960 drawcol = dc.col[defaultrcs];
3961 g.fg = defaultfg;
3962 g.bg = defaultrcs;
3963 } else {
3964 drawcol = dc.col[defaultcs];
3965 }
3966 }
3967
3968 if (IS_SET(MODE_HIDE))
3969 return;
3970
3971 /* draw the new one */
3972 if (xw.state & WIN_FOCUSED) {
3973 switch (xw.cursor) {
3974 case 7: /* st extension: snowman */
3975 utf8decode("☃", &g.u, UTF_SIZ);
3976 case 0: /* Blinking Block */
3977 case 1: /* Blinking Block (Default) */
3978 case 2: /* Steady Block */
3979 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
3980 xdrawglyph(g, term.c.x, term.c.y);
3981 break;
3982 case 3: /* Blinking Underline */
3983 case 4: /* Steady Underline */
3984 XftDrawRect(xw.draw, &drawcol,
3985 borderpx + curx * xw.cw,
3986 borderpx + (term.c.y + 1) * xw.ch - \
3987 cursorthickness,
3988 xw.cw, cursorthickness);
3989 break;
3990 case 5: /* Blinking bar */
3991 case 6: /* Steady bar */
3992 XftDrawRect(xw.draw, &drawcol,
3993 borderpx + curx * xw.cw,
3994 borderpx + term.c.y * xw.ch,
3995 cursorthickness, xw.ch);
3996 break;
3997 }
3998 } else {
3999 XftDrawRect(xw.draw, &drawcol,
4000 borderpx + curx * xw.cw,
4001 borderpx + term.c.y * xw.ch,
4002 xw.cw - 1, 1);
4003 XftDrawRect(xw.draw, &drawcol,
4004 borderpx + curx * xw.cw,
4005 borderpx + term.c.y * xw.ch,
4006 1, xw.ch - 1);
4007 XftDrawRect(xw.draw, &drawcol,
4008 borderpx + (curx + 1) * xw.cw - 1,
4009 borderpx + term.c.y * xw.ch,
4010 1, xw.ch - 1);
4011 XftDrawRect(xw.draw, &drawcol,
4012 borderpx + curx * xw.cw,
4013 borderpx + (term.c.y + 1) * xw.ch - 1,
4014 xw.cw, 1);
4015 }
4016 oldx = curx, oldy = term.c.y;
4017 }
4018
4019
4020 void
4021 xsettitle(char *p)
4022 {
4023 XTextProperty prop;
4024
4025 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
4026 &prop);
4027 XSetWMName(xw.dpy, xw.win, &prop);
4028 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
4029 XFree(prop.value);
4030 }
4031
4032 void
4033 xresettitle(void)
4034 {
4035 xsettitle(opt_title ? opt_title : "st");
4036 }
4037
4038 void
4039 redraw(void)
4040 {
4041 tfulldirt();
4042 draw();
4043 }
4044
4045 void
4046 draw(void)
4047 {
4048 drawregion(0, 0, term.col, term.row);
4049 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
4050 xw.h, 0, 0);
4051 XSetForeground(xw.dpy, dc.gc,
4052 dc.col[IS_SET(MODE_REVERSE)?
4053 defaultfg : defaultbg].pixel);
4054 }
4055
4056 void
4057 drawregion(int x1, int y1, int x2, int y2)
4058 {
4059 int i, x, y, ox, numspecs;
4060 Glyph base, new;
4061 XftGlyphFontSpec *specs;
4062 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
4063
4064 if (!(xw.state & WIN_VISIBLE))
4065 return;
4066
4067 for (y = y1; y < y2; y++) {
4068 if (!term.dirty[y])
4069 continue;
4070
4071 term.dirty[y] = 0;
4072
4073 specs = term.specbuf;
4074 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
4075
4076 i = ox = 0;
4077 for (x = x1; x < x2 && i < numspecs; x++) {
4078 new = term.line[y][x];
4079 if (new.mode == ATTR_WDUMMY)
4080 continue;
4081 if (ena_sel && selected(x, y))
4082 new.mode ^= ATTR_REVERSE;
4083 if (i > 0 && ATTRCMP(base, new)) {
4084 xdrawglyphfontspecs(specs, base, i, ox, y);
4085 specs += i;
4086 numspecs -= i;
4087 i = 0;
4088 }
4089 if (i == 0) {
4090 ox = x;
4091 base = new;
4092 }
4093 i++;
4094 }
4095 if (i > 0)
4096 xdrawglyphfontspecs(specs, base, i, ox, y);
4097 }
4098 xdrawcursor();
4099 }
4100
4101 void
4102 expose(XEvent *ev)
4103 {
4104 redraw();
4105 }
4106
4107 void
4108 visibility(XEvent *ev)
4109 {
4110 XVisibilityEvent *e = &ev->xvisibility;
4111
4112 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
4113 }
4114
4115 void
4116 unmap(XEvent *ev)
4117 {
4118 xw.state &= ~WIN_VISIBLE;
4119 }
4120
4121 void
4122 xsetpointermotion(int set)
4123 {
4124 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
4125 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
4126 }
4127
4128 void
4129 xseturgency(int add)
4130 {
4131 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
4132
4133 MODBIT(h->flags, add, XUrgencyHint);
4134 XSetWMHints(xw.dpy, xw.win, h);
4135 XFree(h);
4136 }
4137
4138 void
4139 focus(XEvent *ev)
4140 {
4141 XFocusChangeEvent *e = &ev->xfocus;
4142
4143 if (e->mode == NotifyGrab)
4144 return;
4145
4146 if (ev->type == FocusIn) {
4147 XSetICFocus(xw.xic);
4148 xw.state |= WIN_FOCUSED;
4149 xseturgency(0);
4150 if (IS_SET(MODE_FOCUS))
4151 ttywrite("\033[I", 3);
4152 } else {
4153 XUnsetICFocus(xw.xic);
4154 xw.state &= ~WIN_FOCUSED;
4155 if (IS_SET(MODE_FOCUS))
4156 ttywrite("\033[O", 3);
4157 }
4158 }
4159
4160 int
4161 match(uint mask, uint state)
4162 {
4163 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
4164 }
4165
4166 void
4167 numlock(const Arg *dummy)
4168 {
4169 term.numlock ^= 1;
4170 }
4171
4172 char*
4173 kmap(KeySym k, uint state)
4174 {
4175 Key *kp;
4176 int i;
4177
4178 /* Check for mapped keys out of X11 function keys. */
4179 for (i = 0; i < LEN(mappedkeys); i++) {
4180 if (mappedkeys[i] == k)
4181 break;
4182 }
4183 if (i == LEN(mappedkeys)) {
4184 if ((k & 0xFFFF) < 0xFD00)
4185 return NULL;
4186 }
4187
4188 for (kp = key; kp < key + LEN(key); kp++) {
4189 if (kp->k != k)
4190 continue;
4191
4192 if (!match(kp->mask, state))
4193 continue;
4194
4195 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
4196 continue;
4197 if (term.numlock && kp->appkey == 2)
4198 continue;
4199
4200 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
4201 continue;
4202
4203 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
4204 continue;
4205
4206 return kp->s;
4207 }
4208
4209 return NULL;
4210 }
4211
4212 void
4213 kpress(XEvent *ev)
4214 {
4215 XKeyEvent *e = &ev->xkey;
4216 KeySym ksym;
4217 char buf[32], *customkey;
4218 int len;
4219 Rune c;
4220 Status status;
4221 Shortcut *bp;
4222
4223 if (IS_SET(MODE_KBDLOCK))
4224 return;
4225
4226 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
4227 /* 1. shortcuts */
4228 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
4229 if (ksym == bp->keysym && match(bp->mod, e->state)) {
4230 bp->func(&(bp->arg));
4231 return;
4232 }
4233 }
4234
4235 /* 2. custom keys from config.h */
4236 if ((customkey = kmap(ksym, e->state))) {
4237 ttysend(customkey, strlen(customkey));
4238 return;
4239 }
4240
4241 /* 3. composed string from input method */
4242 if (len == 0)
4243 return;
4244 if (len == 1 && e->state & Mod1Mask) {
4245 if (IS_SET(MODE_8BIT)) {
4246 if (*buf < 0177) {
4247 c = *buf | 0x80;
4248 len = utf8encode(c, buf);
4249 }
4250 } else {
4251 buf[1] = buf[0];
4252 buf[0] = '\033';
4253 len = 2;
4254 }
4255 }
4256 ttysend(buf, len);
4257 }
4258
4259
4260 void
4261 cmessage(XEvent *e)
4262 {
4263 /*
4264 * See xembed specs
4265 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
4266 */
4267 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
4268 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
4269 xw.state |= WIN_FOCUSED;
4270 xseturgency(0);
4271 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
4272 xw.state &= ~WIN_FOCUSED;
4273 }
4274 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
4275 /* Send SIGHUP to shell */
4276 kill(pid, SIGHUP);
4277 exit(0);
4278 }
4279 }
4280
4281 void
4282 cresize(int width, int height)
4283 {
4284 int col, row;
4285
4286 if (width != 0)
4287 xw.w = width;
4288 if (height != 0)
4289 xw.h = height;
4290
4291 col = (xw.w - 2 * borderpx) / xw.cw;
4292 row = (xw.h - 2 * borderpx) / xw.ch;
4293
4294 tresize(col, row);
4295 xresize(col, row);
4296 }
4297
4298 void
4299 resize(XEvent *e)
4300 {
4301 if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
4302 return;
4303
4304 cresize(e->xconfigure.width, e->xconfigure.height);
4305 ttyresize();
4306 }
4307
4308 void
4309 run(void)
4310 {
4311 XEvent ev;
4312 int w = xw.w, h = xw.h;
4313 fd_set rfd;
4314 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
4315 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
4316 long deltatime;
4317
4318 /* Waiting for window mapping */
4319 do {
4320 XNextEvent(xw.dpy, &ev);
4321 /*
4322 * This XFilterEvent call is required because of XOpenIM. It
4323 * does filter out the key event and some client message for
4324 * the input method too.
4325 */
4326 if (XFilterEvent(&ev, None))
4327 continue;
4328 if (ev.type == ConfigureNotify) {
4329 w = ev.xconfigure.width;
4330 h = ev.xconfigure.height;
4331 }
4332 } while (ev.type != MapNotify);
4333
4334 cresize(w, h);
4335 ttynew();
4336 ttyresize();
4337
4338 clock_gettime(CLOCK_MONOTONIC, &last);
4339 lastblink = last;
4340
4341 for (xev = actionfps;;) {
4342 FD_ZERO(&rfd);
4343 FD_SET(cmdfd, &rfd);
4344 FD_SET(xfd, &rfd);
4345
4346 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
4347 if (errno == EINTR)
4348 continue;
4349 die("select failed: %s\n", strerror(errno));
4350 }
4351 if (FD_ISSET(cmdfd, &rfd)) {
4352 ttyread();
4353 if (blinktimeout) {
4354 blinkset = tattrset(ATTR_BLINK);
4355 if (!blinkset)
4356 MODBIT(term.mode, 0, MODE_BLINK);
4357 }
4358 }
4359
4360 if (FD_ISSET(xfd, &rfd))
4361 xev = actionfps;
4362
4363 clock_gettime(CLOCK_MONOTONIC, &now);
4364 drawtimeout.tv_sec = 0;
4365 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
4366 tv = &drawtimeout;
4367
4368 dodraw = 0;
4369 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
4370 tsetdirtattr(ATTR_BLINK);
4371 term.mode ^= MODE_BLINK;
4372 lastblink = now;
4373 dodraw = 1;
4374 }
4375 deltatime = TIMEDIFF(now, last);
4376 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
4377 dodraw = 1;
4378 last = now;
4379 }
4380
4381 if (dodraw) {
4382 while (XPending(xw.dpy)) {
4383 XNextEvent(xw.dpy, &ev);
4384 if (XFilterEvent(&ev, None))
4385 continue;
4386 if (handler[ev.type])
4387 (handler[ev.type])(&ev);
4388 }
4389
4390 draw();
4391 XFlush(xw.dpy);
4392
4393 if (xev && !FD_ISSET(xfd, &rfd))
4394 xev--;
4395 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
4396 if (blinkset) {
4397 if (TIMEDIFF(now, lastblink) \
4398 > blinktimeout) {
4399 drawtimeout.tv_nsec = 1000;
4400 } else {
4401 drawtimeout.tv_nsec = (1E6 * \
4402 (blinktimeout - \
4403 TIMEDIFF(now,
4404 lastblink)));
4405 }
4406 drawtimeout.tv_sec = \
4407 drawtimeout.tv_nsec / 1E9;
4408 drawtimeout.tv_nsec %= (long)1E9;
4409 } else {
4410 tv = NULL;
4411 }
4412 }
4413 }
4414 }
4415 }
4416
4417 void
4418 usage(void)
4419 {
4420 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
4421 " [-n name] [-o file]\n"
4422 " [-T title] [-t title] [-w windowid]"
4423 " [[-e] command [args ...]]\n"
4424 " %s [-aiv] [-c class] [-f font] [-g geometry]"
4425 " [-n name] [-o file]\n"
4426 " [-T title] [-t title] [-w windowid] -l line"
4427 " [stty_args ...]\n", argv0, argv0);
4428 }
4429
4430 int
4431 main(int argc, char *argv[])
4432 {
4433 uint cols = 80, rows = 24;
4434
4435 xw.l = xw.t = 0;
4436 xw.isfixed = False;
4437 xw.cursor = cursorshape;
4438
4439 ARGBEGIN {
4440 case 'a':
4441 allowaltscreen = 0;
4442 break;
4443 case 'c':
4444 opt_class = EARGF(usage());
4445 break;
4446 case 'e':
4447 if (argc > 0)
4448 --argc, ++argv;
4449 goto run;
4450 case 'f':
4451 opt_font = EARGF(usage());
4452 break;
4453 case 'g':
4454 xw.gm = XParseGeometry(EARGF(usage()),
4455 &xw.l, &xw.t, &cols, &rows);
4456 break;
4457 case 'i':
4458 xw.isfixed = 1;
4459 break;
4460 case 'o':
4461 opt_io = EARGF(usage());
4462 break;
4463 case 'l':
4464 opt_line = EARGF(usage());
4465 break;
4466 case 'n':
4467 opt_name = EARGF(usage());
4468 break;
4469 case 't':
4470 case 'T':
4471 opt_title = EARGF(usage());
4472 break;
4473 case 'w':
4474 opt_embed = EARGF(usage());
4475 break;
4476 case 'v':
4477 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
4478 break;
4479 default:
4480 usage();
4481 } ARGEND;
4482
4483 run:
4484 if (argc > 0) {
4485 /* eat all remaining arguments */
4486 opt_cmd = argv;
4487 if (!opt_title && !opt_line)
4488 opt_title = basename(xstrdup(argv[0]));
4489 }
4490 setlocale(LC_CTYPE, "");
4491 XSetLocaleModifiers("");
4492 tnew(MAX(cols, 1), MAX(rows, 1));
4493 xinit();
4494 selinit();
4495 run();
4496
4497 return 0;
4498 }
4499