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Revert "Initial font size issue."
[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 int badslant;
358 int badweight;
359 short lbearing;
360 short rbearing;
361 XftFont *match;
362 FcFontSet *set;
363 FcPattern *pattern;
364 } Font;
365
366 /* Drawing Context */
367 typedef struct {
368 Color col[MAX(LEN(colorname), 256)];
369 Font font, bfont, ifont, ibfont;
370 GC gc;
371 } DC;
372
373 static void die(const char *, ...);
374 static void draw(void);
375 static void redraw(void);
376 static void drawregion(int, int, int, int);
377 static void execsh(void);
378 static void stty(void);
379 static void sigchld(int);
380 static void run(void);
381
382 static void csidump(void);
383 static void csihandle(void);
384 static void csiparse(void);
385 static void csireset(void);
386 static int eschandle(uchar);
387 static void strdump(void);
388 static void strhandle(void);
389 static void strparse(void);
390 static void strreset(void);
391
392 static int tattrset(int);
393 static void tprinter(char *, size_t);
394 static void tdumpsel(void);
395 static void tdumpline(int);
396 static void tdump(void);
397 static void tclearregion(int, int, int, int);
398 static void tcursor(int);
399 static void tdeletechar(int);
400 static void tdeleteline(int);
401 static void tinsertblank(int);
402 static void tinsertblankline(int);
403 static int tlinelen(int);
404 static void tmoveto(int, int);
405 static void tmoveato(int, int);
406 static void tnew(int, int);
407 static void tnewline(int);
408 static void tputtab(int);
409 static void tputc(Rune);
410 static void treset(void);
411 static void tresize(int, int);
412 static void tscrollup(int, int);
413 static void tscrolldown(int, int);
414 static void tsetattr(int *, int);
415 static void tsetchar(Rune, Glyph *, int, int);
416 static void tsetscroll(int, int);
417 static void tswapscreen(void);
418 static void tsetdirt(int, int);
419 static void tsetdirtattr(int);
420 static void tsetmode(int, int, int *, int);
421 static void tfulldirt(void);
422 static void techo(Rune);
423 static void tcontrolcode(uchar );
424 static void tdectest(char );
425 static void tdefutf8(char);
426 static int32_t tdefcolor(int *, int *, int);
427 static void tdeftran(char);
428 static inline int match(uint, uint);
429 static void ttynew(void);
430 static size_t ttyread(void);
431 static void ttyresize(void);
432 static void ttysend(char *, size_t);
433 static void ttywrite(const char *, size_t);
434 static void tstrsequence(uchar);
435
436 static inline ushort sixd_to_16bit(int);
437 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
438 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
439 static void xdrawglyph(Glyph, int, int);
440 static void xhints(void);
441 static void xclear(int, int, int, int);
442 static void xdrawcursor(void);
443 static void xinit(void);
444 static void xloadcols(void);
445 static int xsetcolorname(int, const char *);
446 static int xgeommasktogravity(int);
447 static int xloadfont(Font *, FcPattern *);
448 static void xloadfonts(char *, double);
449 static void xsettitle(char *);
450 static void xresettitle(void);
451 static void xsetpointermotion(int);
452 static void xseturgency(int);
453 static void xsetsel(char *, Time);
454 static void xunloadfont(Font *);
455 static void xunloadfonts(void);
456 static void xresize(int, int);
457
458 static void expose(XEvent *);
459 static void visibility(XEvent *);
460 static void unmap(XEvent *);
461 static char *kmap(KeySym, uint);
462 static void kpress(XEvent *);
463 static void cmessage(XEvent *);
464 static void cresize(int, int);
465 static void resize(XEvent *);
466 static void focus(XEvent *);
467 static void brelease(XEvent *);
468 static void bpress(XEvent *);
469 static void bmotion(XEvent *);
470 static void propnotify(XEvent *);
471 static void selnotify(XEvent *);
472 static void selclear(XEvent *);
473 static void selrequest(XEvent *);
474
475 static void selinit(void);
476 static void selnormalize(void);
477 static inline int selected(int, int);
478 static char *getsel(void);
479 static void selcopy(Time);
480 static void selscroll(int, int);
481 static void selsnap(int *, int *, int);
482 static int x2col(int);
483 static int y2row(int);
484 static void getbuttoninfo(XEvent *);
485 static void mousereport(XEvent *);
486
487 static size_t utf8decode(char *, Rune *, size_t);
488 static Rune utf8decodebyte(char, size_t *);
489 static size_t utf8encode(Rune, char *);
490 static char utf8encodebyte(Rune, size_t);
491 static char *utf8strchr(char *s, Rune u);
492 static size_t utf8validate(Rune *, size_t);
493
494 static ssize_t xwrite(int, const char *, size_t);
495 static void *xmalloc(size_t);
496 static void *xrealloc(void *, size_t);
497 static char *xstrdup(char *);
498
499 static void usage(void);
500
501 static void (*handler[LASTEvent])(XEvent *) = {
502 [KeyPress] = kpress,
503 [ClientMessage] = cmessage,
504 [ConfigureNotify] = resize,
505 [VisibilityNotify] = visibility,
506 [UnmapNotify] = unmap,
507 [Expose] = expose,
508 [FocusIn] = focus,
509 [FocusOut] = focus,
510 [MotionNotify] = bmotion,
511 [ButtonPress] = bpress,
512 [ButtonRelease] = brelease,
513 /*
514 * Uncomment if you want the selection to disappear when you select something
515 * different in another window.
516 */
517 /* [SelectionClear] = selclear, */
518 [SelectionNotify] = selnotify,
519 /*
520 * PropertyNotify is only turned on when there is some INCR transfer happening
521 * for the selection retrieval.
522 */
523 [PropertyNotify] = propnotify,
524 [SelectionRequest] = selrequest,
525 };
526
527 /* Globals */
528 static DC dc;
529 static XWindow xw;
530 static Term term;
531 static CSIEscape csiescseq;
532 static STREscape strescseq;
533 static int cmdfd;
534 static pid_t pid;
535 static Selection sel;
536 static int iofd = 1;
537 static char **opt_cmd = NULL;
538 static char *opt_class = NULL;
539 static char *opt_embed = NULL;
540 static char *opt_font = NULL;
541 static char *opt_io = NULL;
542 static char *opt_line = NULL;
543 static char *opt_name = NULL;
544 static char *opt_title = NULL;
545 static int oldbutton = 3; /* button event on startup: 3 = release */
546
547 static char *usedfont = NULL;
548 static double usedfontsize = 0;
549 static double defaultfontsize = 0;
550
551 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
552 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
553 static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
554 static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
555
556 /* Font Ring Cache */
557 enum {
558 FRC_NORMAL,
559 FRC_ITALIC,
560 FRC_BOLD,
561 FRC_ITALICBOLD
562 };
563
564 typedef struct {
565 XftFont *font;
566 int flags;
567 Rune unicodep;
568 } Fontcache;
569
570 /* Fontcache is an array now. A new font will be appended to the array. */
571 static Fontcache frc[16];
572 static int frclen = 0;
573
574 ssize_t
575 xwrite(int fd, const char *s, size_t len)
576 {
577 size_t aux = len;
578 ssize_t r;
579
580 while (len > 0) {
581 r = write(fd, s, len);
582 if (r < 0)
583 return r;
584 len -= r;
585 s += r;
586 }
587
588 return aux;
589 }
590
591 void *
592 xmalloc(size_t len)
593 {
594 void *p = malloc(len);
595
596 if (!p)
597 die("Out of memory\n");
598
599 return p;
600 }
601
602 void *
603 xrealloc(void *p, size_t len)
604 {
605 if ((p = realloc(p, len)) == NULL)
606 die("Out of memory\n");
607
608 return p;
609 }
610
611 char *
612 xstrdup(char *s)
613 {
614 if ((s = strdup(s)) == NULL)
615 die("Out of memory\n");
616
617 return s;
618 }
619
620 size_t
621 utf8decode(char *c, Rune *u, size_t clen)
622 {
623 size_t i, j, len, type;
624 Rune udecoded;
625
626 *u = UTF_INVALID;
627 if (!clen)
628 return 0;
629 udecoded = utf8decodebyte(c[0], &len);
630 if (!BETWEEN(len, 1, UTF_SIZ))
631 return 1;
632 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
633 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
634 if (type != 0)
635 return j;
636 }
637 if (j < len)
638 return 0;
639 *u = udecoded;
640 utf8validate(u, len);
641
642 return len;
643 }
644
645 Rune
646 utf8decodebyte(char c, size_t *i)
647 {
648 for (*i = 0; *i < LEN(utfmask); ++(*i))
649 if (((uchar)c & utfmask[*i]) == utfbyte[*i])
650 return (uchar)c & ~utfmask[*i];
651
652 return 0;
653 }
654
655 size_t
656 utf8encode(Rune u, char *c)
657 {
658 size_t len, i;
659
660 len = utf8validate(&u, 0);
661 if (len > UTF_SIZ)
662 return 0;
663
664 for (i = len - 1; i != 0; --i) {
665 c[i] = utf8encodebyte(u, 0);
666 u >>= 6;
667 }
668 c[0] = utf8encodebyte(u, len);
669
670 return len;
671 }
672
673 char
674 utf8encodebyte(Rune u, size_t i)
675 {
676 return utfbyte[i] | (u & ~utfmask[i]);
677 }
678
679 char *
680 utf8strchr(char *s, Rune u)
681 {
682 Rune r;
683 size_t i, j, len;
684
685 len = strlen(s);
686 for (i = 0, j = 0; i < len; i += j) {
687 if (!(j = utf8decode(&s[i], &r, len - i)))
688 break;
689 if (r == u)
690 return &(s[i]);
691 }
692
693 return NULL;
694 }
695
696 size_t
697 utf8validate(Rune *u, size_t i)
698 {
699 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
700 *u = UTF_INVALID;
701 for (i = 1; *u > utfmax[i]; ++i)
702 ;
703
704 return i;
705 }
706
707 void
708 selinit(void)
709 {
710 clock_gettime(CLOCK_MONOTONIC, &sel.tclick1);
711 clock_gettime(CLOCK_MONOTONIC, &sel.tclick2);
712 sel.mode = SEL_IDLE;
713 sel.snap = 0;
714 sel.ob.x = -1;
715 sel.primary = NULL;
716 sel.clipboard = NULL;
717 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
718 if (sel.xtarget == None)
719 sel.xtarget = XA_STRING;
720 }
721
722 int
723 x2col(int x)
724 {
725 x -= borderpx;
726 x /= xw.cw;
727
728 return LIMIT(x, 0, term.col-1);
729 }
730
731 int
732 y2row(int y)
733 {
734 y -= borderpx;
735 y /= xw.ch;
736
737 return LIMIT(y, 0, term.row-1);
738 }
739
740 int
741 tlinelen(int y)
742 {
743 int i = term.col;
744
745 if (term.line[y][i - 1].mode & ATTR_WRAP)
746 return i;
747
748 while (i > 0 && term.line[y][i - 1].u == ' ')
749 --i;
750
751 return i;
752 }
753
754 void
755 selnormalize(void)
756 {
757 int i;
758
759 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
760 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
761 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
762 } else {
763 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
764 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
765 }
766 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
767 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
768
769 selsnap(&sel.nb.x, &sel.nb.y, -1);
770 selsnap(&sel.ne.x, &sel.ne.y, +1);
771
772 /* expand selection over line breaks */
773 if (sel.type == SEL_RECTANGULAR)
774 return;
775 i = tlinelen(sel.nb.y);
776 if (i < sel.nb.x)
777 sel.nb.x = i;
778 if (tlinelen(sel.ne.y) <= sel.ne.x)
779 sel.ne.x = term.col - 1;
780 }
781
782 int
783 selected(int x, int y)
784 {
785 if (sel.mode == SEL_EMPTY)
786 return 0;
787
788 if (sel.type == SEL_RECTANGULAR)
789 return BETWEEN(y, sel.nb.y, sel.ne.y)
790 && BETWEEN(x, sel.nb.x, sel.ne.x);
791
792 return BETWEEN(y, sel.nb.y, sel.ne.y)
793 && (y != sel.nb.y || x >= sel.nb.x)
794 && (y != sel.ne.y || x <= sel.ne.x);
795 }
796
797 void
798 selsnap(int *x, int *y, int direction)
799 {
800 int newx, newy, xt, yt;
801 int delim, prevdelim;
802 Glyph *gp, *prevgp;
803
804 switch (sel.snap) {
805 case SNAP_WORD:
806 /*
807 * Snap around if the word wraps around at the end or
808 * beginning of a line.
809 */
810 prevgp = &term.line[*y][*x];
811 prevdelim = ISDELIM(prevgp->u);
812 for (;;) {
813 newx = *x + direction;
814 newy = *y;
815 if (!BETWEEN(newx, 0, term.col - 1)) {
816 newy += direction;
817 newx = (newx + term.col) % term.col;
818 if (!BETWEEN(newy, 0, term.row - 1))
819 break;
820
821 if (direction > 0)
822 yt = *y, xt = *x;
823 else
824 yt = newy, xt = newx;
825 if (!(term.line[yt][xt].mode & ATTR_WRAP))
826 break;
827 }
828
829 if (newx >= tlinelen(newy))
830 break;
831
832 gp = &term.line[newy][newx];
833 delim = ISDELIM(gp->u);
834 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
835 || (delim && gp->u != prevgp->u)))
836 break;
837
838 *x = newx;
839 *y = newy;
840 prevgp = gp;
841 prevdelim = delim;
842 }
843 break;
844 case SNAP_LINE:
845 /*
846 * Snap around if the the previous line or the current one
847 * has set ATTR_WRAP at its end. Then the whole next or
848 * previous line will be selected.
849 */
850 *x = (direction < 0) ? 0 : term.col - 1;
851 if (direction < 0) {
852 for (; *y > 0; *y += direction) {
853 if (!(term.line[*y-1][term.col-1].mode
854 & ATTR_WRAP)) {
855 break;
856 }
857 }
858 } else if (direction > 0) {
859 for (; *y < term.row-1; *y += direction) {
860 if (!(term.line[*y][term.col-1].mode
861 & ATTR_WRAP)) {
862 break;
863 }
864 }
865 }
866 break;
867 }
868 }
869
870 void
871 getbuttoninfo(XEvent *e)
872 {
873 int type;
874 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
875
876 sel.alt = IS_SET(MODE_ALTSCREEN);
877
878 sel.oe.x = x2col(e->xbutton.x);
879 sel.oe.y = y2row(e->xbutton.y);
880 selnormalize();
881
882 sel.type = SEL_REGULAR;
883 for (type = 1; type < LEN(selmasks); ++type) {
884 if (match(selmasks[type], state)) {
885 sel.type = type;
886 break;
887 }
888 }
889 }
890
891 void
892 mousereport(XEvent *e)
893 {
894 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
895 button = e->xbutton.button, state = e->xbutton.state,
896 len;
897 char buf[40];
898 static int ox, oy;
899
900 /* from urxvt */
901 if (e->xbutton.type == MotionNotify) {
902 if (x == ox && y == oy)
903 return;
904 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
905 return;
906 /* MOUSE_MOTION: no reporting if no button is pressed */
907 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
908 return;
909
910 button = oldbutton + 32;
911 ox = x;
912 oy = y;
913 } else {
914 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
915 button = 3;
916 } else {
917 button -= Button1;
918 if (button >= 3)
919 button += 64 - 3;
920 }
921 if (e->xbutton.type == ButtonPress) {
922 oldbutton = button;
923 ox = x;
924 oy = y;
925 } else if (e->xbutton.type == ButtonRelease) {
926 oldbutton = 3;
927 /* MODE_MOUSEX10: no button release reporting */
928 if (IS_SET(MODE_MOUSEX10))
929 return;
930 if (button == 64 || button == 65)
931 return;
932 }
933 }
934
935 if (!IS_SET(MODE_MOUSEX10)) {
936 button += ((state & ShiftMask ) ? 4 : 0)
937 + ((state & Mod4Mask ) ? 8 : 0)
938 + ((state & ControlMask) ? 16 : 0);
939 }
940
941 if (IS_SET(MODE_MOUSESGR)) {
942 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
943 button, x+1, y+1,
944 e->xbutton.type == ButtonRelease ? 'm' : 'M');
945 } else if (x < 223 && y < 223) {
946 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
947 32+button, 32+x+1, 32+y+1);
948 } else {
949 return;
950 }
951
952 ttywrite(buf, len);
953 }
954
955 void
956 bpress(XEvent *e)
957 {
958 struct timespec now;
959 MouseShortcut *ms;
960
961 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
962 mousereport(e);
963 return;
964 }
965
966 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
967 if (e->xbutton.button == ms->b
968 && match(ms->mask, e->xbutton.state)) {
969 ttysend(ms->s, strlen(ms->s));
970 return;
971 }
972 }
973
974 if (e->xbutton.button == Button1) {
975 clock_gettime(CLOCK_MONOTONIC, &now);
976
977 /* Clear previous selection, logically and visually. */
978 selclear(NULL);
979 sel.mode = SEL_EMPTY;
980 sel.type = SEL_REGULAR;
981 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
982 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
983
984 /*
985 * If the user clicks below predefined timeouts specific
986 * snapping behaviour is exposed.
987 */
988 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
989 sel.snap = SNAP_LINE;
990 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
991 sel.snap = SNAP_WORD;
992 } else {
993 sel.snap = 0;
994 }
995 selnormalize();
996
997 if (sel.snap != 0)
998 sel.mode = SEL_READY;
999 tsetdirt(sel.nb.y, sel.ne.y);
1000 sel.tclick2 = sel.tclick1;
1001 sel.tclick1 = now;
1002 }
1003 }
1004
1005 char *
1006 getsel(void)
1007 {
1008 char *str, *ptr;
1009 int y, bufsize, lastx, linelen;
1010 Glyph *gp, *last;
1011
1012 if (sel.ob.x == -1)
1013 return NULL;
1014
1015 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
1016 ptr = str = xmalloc(bufsize);
1017
1018 /* append every set & selected glyph to the selection */
1019 for (y = sel.nb.y; y <= sel.ne.y; y++) {
1020 if ((linelen = tlinelen(y)) == 0) {
1021 *ptr++ = '\n';
1022 continue;
1023 }
1024
1025 if (sel.type == SEL_RECTANGULAR) {
1026 gp = &term.line[y][sel.nb.x];
1027 lastx = sel.ne.x;
1028 } else {
1029 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
1030 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
1031 }
1032 last = &term.line[y][MIN(lastx, linelen-1)];
1033 while (last >= gp && last->u == ' ')
1034 --last;
1035
1036 for ( ; gp <= last; ++gp) {
1037 if (gp->mode & ATTR_WDUMMY)
1038 continue;
1039
1040 ptr += utf8encode(gp->u, ptr);
1041 }
1042
1043 /*
1044 * Copy and pasting of line endings is inconsistent
1045 * in the inconsistent terminal and GUI world.
1046 * The best solution seems like to produce '\n' when
1047 * something is copied from st and convert '\n' to
1048 * '\r', when something to be pasted is received by
1049 * st.
1050 * FIXME: Fix the computer world.
1051 */
1052 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
1053 *ptr++ = '\n';
1054 }
1055 *ptr = 0;
1056 return str;
1057 }
1058
1059 void
1060 selcopy(Time t)
1061 {
1062 xsetsel(getsel(), t);
1063 }
1064
1065 void
1066 propnotify(XEvent *e)
1067 {
1068 XPropertyEvent *xpev;
1069 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1070
1071 xpev = &e->xproperty;
1072 if (xpev->state == PropertyNewValue &&
1073 (xpev->atom == XA_PRIMARY ||
1074 xpev->atom == clipboard)) {
1075 selnotify(e);
1076 }
1077 }
1078
1079 void
1080 selnotify(XEvent *e)
1081 {
1082 ulong nitems, ofs, rem;
1083 int format;
1084 uchar *data, *last, *repl;
1085 Atom type, incratom, property;
1086
1087 incratom = XInternAtom(xw.dpy, "INCR", 0);
1088
1089 ofs = 0;
1090 if (e->type == SelectionNotify) {
1091 property = e->xselection.property;
1092 } else if(e->type == PropertyNotify) {
1093 property = e->xproperty.atom;
1094 } else {
1095 return;
1096 }
1097 if (property == None)
1098 return;
1099
1100 do {
1101 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
1102 BUFSIZ/4, False, AnyPropertyType,
1103 &type, &format, &nitems, &rem,
1104 &data)) {
1105 fprintf(stderr, "Clipboard allocation failed\n");
1106 return;
1107 }
1108
1109 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
1110 /*
1111 * If there is some PropertyNotify with no data, then
1112 * this is the signal of the selection owner that all
1113 * data has been transferred. We won't need to receive
1114 * PropertyNotify events anymore.
1115 */
1116 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
1117 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1118 &xw.attrs);
1119 }
1120
1121 if (type == incratom) {
1122 /*
1123 * Activate the PropertyNotify events so we receive
1124 * when the selection owner does send us the next
1125 * chunk of data.
1126 */
1127 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
1128 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1129 &xw.attrs);
1130
1131 /*
1132 * Deleting the property is the transfer start signal.
1133 */
1134 XDeleteProperty(xw.dpy, xw.win, (int)property);
1135 continue;
1136 }
1137
1138 /*
1139 * As seen in getsel:
1140 * Line endings are inconsistent in the terminal and GUI world
1141 * copy and pasting. When receiving some selection data,
1142 * replace all '\n' with '\r'.
1143 * FIXME: Fix the computer world.
1144 */
1145 repl = data;
1146 last = data + nitems * format / 8;
1147 while ((repl = memchr(repl, '\n', last - repl))) {
1148 *repl++ = '\r';
1149 }
1150
1151 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
1152 ttywrite("\033[200~", 6);
1153 ttysend((char *)data, nitems * format / 8);
1154 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
1155 ttywrite("\033[201~", 6);
1156 XFree(data);
1157 /* number of 32-bit chunks returned */
1158 ofs += nitems * format / 32;
1159 } while (rem > 0);
1160
1161 /*
1162 * Deleting the property again tells the selection owner to send the
1163 * next data chunk in the property.
1164 */
1165 XDeleteProperty(xw.dpy, xw.win, (int)property);
1166 }
1167
1168 void
1169 selpaste(const Arg *dummy)
1170 {
1171 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1172 xw.win, CurrentTime);
1173 }
1174
1175 void
1176 clipcopy(const Arg *dummy)
1177 {
1178 Atom clipboard;
1179
1180 if (sel.clipboard != NULL)
1181 free(sel.clipboard);
1182
1183 if (sel.primary != NULL) {
1184 sel.clipboard = xstrdup(sel.primary);
1185 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1186 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1187 }
1188 }
1189
1190 void
1191 clippaste(const Arg *dummy)
1192 {
1193 Atom clipboard;
1194
1195 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1196 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1197 xw.win, CurrentTime);
1198 }
1199
1200 void
1201 selclear(XEvent *e)
1202 {
1203 if (sel.ob.x == -1)
1204 return;
1205 sel.mode = SEL_IDLE;
1206 sel.ob.x = -1;
1207 tsetdirt(sel.nb.y, sel.ne.y);
1208 }
1209
1210 void
1211 selrequest(XEvent *e)
1212 {
1213 XSelectionRequestEvent *xsre;
1214 XSelectionEvent xev;
1215 Atom xa_targets, string, clipboard;
1216 char *seltext;
1217
1218 xsre = (XSelectionRequestEvent *) e;
1219 xev.type = SelectionNotify;
1220 xev.requestor = xsre->requestor;
1221 xev.selection = xsre->selection;
1222 xev.target = xsre->target;
1223 xev.time = xsre->time;
1224 if (xsre->property == None)
1225 xsre->property = xsre->target;
1226
1227 /* reject */
1228 xev.property = None;
1229
1230 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1231 if (xsre->target == xa_targets) {
1232 /* respond with the supported type */
1233 string = sel.xtarget;
1234 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1235 XA_ATOM, 32, PropModeReplace,
1236 (uchar *) &string, 1);
1237 xev.property = xsre->property;
1238 } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1239 /*
1240 * xith XA_STRING non ascii characters may be incorrect in the
1241 * requestor. It is not our problem, use utf8.
1242 */
1243 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1244 if (xsre->selection == XA_PRIMARY) {
1245 seltext = sel.primary;
1246 } else if (xsre->selection == clipboard) {
1247 seltext = sel.clipboard;
1248 } else {
1249 fprintf(stderr,
1250 "Unhandled clipboard selection 0x%lx\n",
1251 xsre->selection);
1252 return;
1253 }
1254 if (seltext != NULL) {
1255 XChangeProperty(xsre->display, xsre->requestor,
1256 xsre->property, xsre->target,
1257 8, PropModeReplace,
1258 (uchar *)seltext, strlen(seltext));
1259 xev.property = xsre->property;
1260 }
1261 }
1262
1263 /* all done, send a notification to the listener */
1264 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
1265 fprintf(stderr, "Error sending SelectionNotify event\n");
1266 }
1267
1268 void
1269 xsetsel(char *str, Time t)
1270 {
1271 free(sel.primary);
1272 sel.primary = str;
1273
1274 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1275 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1276 selclear(0);
1277 }
1278
1279 void
1280 brelease(XEvent *e)
1281 {
1282 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1283 mousereport(e);
1284 return;
1285 }
1286
1287 if (e->xbutton.button == Button2) {
1288 selpaste(NULL);
1289 } else if (e->xbutton.button == Button1) {
1290 if (sel.mode == SEL_READY) {
1291 getbuttoninfo(e);
1292 selcopy(e->xbutton.time);
1293 } else
1294 selclear(NULL);
1295 sel.mode = SEL_IDLE;
1296 tsetdirt(sel.nb.y, sel.ne.y);
1297 }
1298 }
1299
1300 void
1301 bmotion(XEvent *e)
1302 {
1303 int oldey, oldex, oldsby, oldsey;
1304
1305 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1306 mousereport(e);
1307 return;
1308 }
1309
1310 if (!sel.mode)
1311 return;
1312
1313 sel.mode = SEL_READY;
1314 oldey = sel.oe.y;
1315 oldex = sel.oe.x;
1316 oldsby = sel.nb.y;
1317 oldsey = sel.ne.y;
1318 getbuttoninfo(e);
1319
1320 if (oldey != sel.oe.y || oldex != sel.oe.x)
1321 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1322 }
1323
1324 void
1325 die(const char *errstr, ...)
1326 {
1327 va_list ap;
1328
1329 va_start(ap, errstr);
1330 vfprintf(stderr, errstr, ap);
1331 va_end(ap);
1332 exit(1);
1333 }
1334
1335 void
1336 execsh(void)
1337 {
1338 char **args, *sh, *prog;
1339 const struct passwd *pw;
1340 char buf[sizeof(long) * 8 + 1];
1341
1342 errno = 0;
1343 if ((pw = getpwuid(getuid())) == NULL) {
1344 if (errno)
1345 die("getpwuid:%s\n", strerror(errno));
1346 else
1347 die("who are you?\n");
1348 }
1349
1350 if ((sh = getenv("SHELL")) == NULL)
1351 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1352
1353 if (opt_cmd)
1354 prog = opt_cmd[0];
1355 else if (utmp)
1356 prog = utmp;
1357 else
1358 prog = sh;
1359 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1360
1361 snprintf(buf, sizeof(buf), "%lu", xw.win);
1362
1363 unsetenv("COLUMNS");
1364 unsetenv("LINES");
1365 unsetenv("TERMCAP");
1366 setenv("LOGNAME", pw->pw_name, 1);
1367 setenv("USER", pw->pw_name, 1);
1368 setenv("SHELL", sh, 1);
1369 setenv("HOME", pw->pw_dir, 1);
1370 setenv("TERM", termname, 1);
1371 setenv("WINDOWID", buf, 1);
1372
1373 signal(SIGCHLD, SIG_DFL);
1374 signal(SIGHUP, SIG_DFL);
1375 signal(SIGINT, SIG_DFL);
1376 signal(SIGQUIT, SIG_DFL);
1377 signal(SIGTERM, SIG_DFL);
1378 signal(SIGALRM, SIG_DFL);
1379
1380 execvp(prog, args);
1381 _exit(1);
1382 }
1383
1384 void
1385 sigchld(int a)
1386 {
1387 int stat;
1388 pid_t p;
1389
1390 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
1391 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1392
1393 if (pid != p)
1394 return;
1395
1396 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
1397 die("child finished with error '%d'\n", stat);
1398 exit(0);
1399 }
1400
1401
1402 void
1403 stty(void)
1404 {
1405 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1406 size_t n, siz;
1407
1408 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
1409 die("incorrect stty parameters\n");
1410 memcpy(cmd, stty_args, n);
1411 q = cmd + n;
1412 siz = sizeof(cmd) - n;
1413 for (p = opt_cmd; p && (s = *p); ++p) {
1414 if ((n = strlen(s)) > siz-1)
1415 die("stty parameter length too long\n");
1416 *q++ = ' ';
1417 memcpy(q, s, n);
1418 q += n;
1419 siz -= n + 1;
1420 }
1421 *q = '\0';
1422 if (system(cmd) != 0)
1423 perror("Couldn't call stty");
1424 }
1425
1426 void
1427 ttynew(void)
1428 {
1429 int m, s;
1430 struct winsize w = {term.row, term.col, 0, 0};
1431
1432 if (opt_io) {
1433 term.mode |= MODE_PRINT;
1434 iofd = (!strcmp(opt_io, "-")) ?
1435 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
1436 if (iofd < 0) {
1437 fprintf(stderr, "Error opening %s:%s\n",
1438 opt_io, strerror(errno));
1439 }
1440 }
1441
1442 if (opt_line) {
1443 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
1444 die("open line failed: %s\n", strerror(errno));
1445 dup2(cmdfd, 0);
1446 stty();
1447 return;
1448 }
1449
1450 /* seems to work fine on linux, openbsd and freebsd */
1451 if (openpty(&m, &s, NULL, NULL, &w) < 0)
1452 die("openpty failed: %s\n", strerror(errno));
1453
1454 switch (pid = fork()) {
1455 case -1:
1456 die("fork failed\n");
1457 break;
1458 case 0:
1459 close(iofd);
1460 setsid(); /* create a new process group */
1461 dup2(s, 0);
1462 dup2(s, 1);
1463 dup2(s, 2);
1464 if (ioctl(s, TIOCSCTTY, NULL) < 0)
1465 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1466 close(s);
1467 close(m);
1468 execsh();
1469 break;
1470 default:
1471 close(s);
1472 cmdfd = m;
1473 signal(SIGCHLD, sigchld);
1474 break;
1475 }
1476 }
1477
1478 size_t
1479 ttyread(void)
1480 {
1481 static char buf[BUFSIZ];
1482 static int buflen = 0;
1483 char *ptr;
1484 int charsize; /* size of utf8 char in bytes */
1485 Rune unicodep;
1486 int ret;
1487
1488 /* append read bytes to unprocessed bytes */
1489 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1490 die("Couldn't read from shell: %s\n", strerror(errno));
1491
1492 buflen += ret;
1493 ptr = buf;
1494
1495 for (;;) {
1496 if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
1497 /* process a complete utf8 char */
1498 charsize = utf8decode(ptr, &unicodep, buflen);
1499 if (charsize == 0)
1500 break;
1501 tputc(unicodep);
1502 ptr += charsize;
1503 buflen -= charsize;
1504
1505 } else {
1506 if (buflen <= 0)
1507 break;
1508 tputc(*ptr++ & 0xFF);
1509 buflen--;
1510 }
1511 }
1512 /* keep any uncomplete utf8 char for the next call */
1513 if (buflen > 0)
1514 memmove(buf, ptr, buflen);
1515
1516 return ret;
1517 }
1518
1519 void
1520 ttywrite(const char *s, size_t n)
1521 {
1522 fd_set wfd, rfd;
1523 ssize_t r;
1524 size_t lim = 256;
1525
1526 /*
1527 * Remember that we are using a pty, which might be a modem line.
1528 * Writing too much will clog the line. That's why we are doing this
1529 * dance.
1530 * FIXME: Migrate the world to Plan 9.
1531 */
1532 while (n > 0) {
1533 FD_ZERO(&wfd);
1534 FD_ZERO(&rfd);
1535 FD_SET(cmdfd, &wfd);
1536 FD_SET(cmdfd, &rfd);
1537
1538 /* Check if we can write. */
1539 if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
1540 if (errno == EINTR)
1541 continue;
1542 die("select failed: %s\n", strerror(errno));
1543 }
1544 if (FD_ISSET(cmdfd, &wfd)) {
1545 /*
1546 * Only write the bytes written by ttywrite() or the
1547 * default of 256. This seems to be a reasonable value
1548 * for a serial line. Bigger values might clog the I/O.
1549 */
1550 if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
1551 goto write_error;
1552 if (r < n) {
1553 /*
1554 * We weren't able to write out everything.
1555 * This means the buffer is getting full
1556 * again. Empty it.
1557 */
1558 if (n < lim)
1559 lim = ttyread();
1560 n -= r;
1561 s += r;
1562 } else {
1563 /* All bytes have been written. */
1564 break;
1565 }
1566 }
1567 if (FD_ISSET(cmdfd, &rfd))
1568 lim = ttyread();
1569 }
1570 return;
1571
1572 write_error:
1573 die("write error on tty: %s\n", strerror(errno));
1574 }
1575
1576 void
1577 ttysend(char *s, size_t n)
1578 {
1579 int len;
1580 char *t, *lim;
1581 Rune u;
1582
1583 ttywrite(s, n);
1584 if (!IS_SET(MODE_ECHO))
1585 return;
1586
1587 lim = &s[n];
1588 for (t = s; t < lim; t += len) {
1589 if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
1590 len = utf8decode(t, &u, n);
1591 } else {
1592 u = *t & 0xFF;
1593 len = 1;
1594 }
1595 if (len <= 0)
1596 break;
1597 techo(u);
1598 n -= len;
1599 }
1600 }
1601
1602 void
1603 ttyresize(void)
1604 {
1605 struct winsize w;
1606
1607 w.ws_row = term.row;
1608 w.ws_col = term.col;
1609 w.ws_xpixel = xw.tw;
1610 w.ws_ypixel = xw.th;
1611 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1612 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1613 }
1614
1615 int
1616 tattrset(int attr)
1617 {
1618 int i, j;
1619
1620 for (i = 0; i < term.row-1; i++) {
1621 for (j = 0; j < term.col-1; j++) {
1622 if (term.line[i][j].mode & attr)
1623 return 1;
1624 }
1625 }
1626
1627 return 0;
1628 }
1629
1630 void
1631 tsetdirt(int top, int bot)
1632 {
1633 int i;
1634
1635 LIMIT(top, 0, term.row-1);
1636 LIMIT(bot, 0, term.row-1);
1637
1638 for (i = top; i <= bot; i++)
1639 term.dirty[i] = 1;
1640 }
1641
1642 void
1643 tsetdirtattr(int attr)
1644 {
1645 int i, j;
1646
1647 for (i = 0; i < term.row-1; i++) {
1648 for (j = 0; j < term.col-1; j++) {
1649 if (term.line[i][j].mode & attr) {
1650 tsetdirt(i, i);
1651 break;
1652 }
1653 }
1654 }
1655 }
1656
1657 void
1658 tfulldirt(void)
1659 {
1660 tsetdirt(0, term.row-1);
1661 }
1662
1663 void
1664 tcursor(int mode)
1665 {
1666 static TCursor c[2];
1667 int alt = IS_SET(MODE_ALTSCREEN);
1668
1669 if (mode == CURSOR_SAVE) {
1670 c[alt] = term.c;
1671 } else if (mode == CURSOR_LOAD) {
1672 term.c = c[alt];
1673 tmoveto(c[alt].x, c[alt].y);
1674 }
1675 }
1676
1677 void
1678 treset(void)
1679 {
1680 uint i;
1681
1682 term.c = (TCursor){{
1683 .mode = ATTR_NULL,
1684 .fg = defaultfg,
1685 .bg = defaultbg
1686 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1687
1688 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1689 for (i = tabspaces; i < term.col; i += tabspaces)
1690 term.tabs[i] = 1;
1691 term.top = 0;
1692 term.bot = term.row - 1;
1693 term.mode = MODE_WRAP|MODE_UTF8;
1694 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1695 term.charset = 0;
1696
1697 for (i = 0; i < 2; i++) {
1698 tmoveto(0, 0);
1699 tcursor(CURSOR_SAVE);
1700 tclearregion(0, 0, term.col-1, term.row-1);
1701 tswapscreen();
1702 }
1703 }
1704
1705 void
1706 tnew(int col, int row)
1707 {
1708 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1709 tresize(col, row);
1710 term.numlock = 1;
1711
1712 treset();
1713 }
1714
1715 void
1716 tswapscreen(void)
1717 {
1718 Line *tmp = term.line;
1719
1720 term.line = term.alt;
1721 term.alt = tmp;
1722 term.mode ^= MODE_ALTSCREEN;
1723 tfulldirt();
1724 }
1725
1726 void
1727 tscrolldown(int orig, int n)
1728 {
1729 int i;
1730 Line temp;
1731
1732 LIMIT(n, 0, term.bot-orig+1);
1733
1734 tsetdirt(orig, term.bot-n);
1735 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1736
1737 for (i = term.bot; i >= orig+n; i--) {
1738 temp = term.line[i];
1739 term.line[i] = term.line[i-n];
1740 term.line[i-n] = temp;
1741 }
1742
1743 selscroll(orig, n);
1744 }
1745
1746 void
1747 tscrollup(int orig, int n)
1748 {
1749 int i;
1750 Line temp;
1751
1752 LIMIT(n, 0, term.bot-orig+1);
1753
1754 tclearregion(0, orig, term.col-1, orig+n-1);
1755 tsetdirt(orig+n, term.bot);
1756
1757 for (i = orig; i <= term.bot-n; i++) {
1758 temp = term.line[i];
1759 term.line[i] = term.line[i+n];
1760 term.line[i+n] = temp;
1761 }
1762
1763 selscroll(orig, -n);
1764 }
1765
1766 void
1767 selscroll(int orig, int n)
1768 {
1769 if (sel.ob.x == -1)
1770 return;
1771
1772 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1773 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1774 selclear(NULL);
1775 return;
1776 }
1777 if (sel.type == SEL_RECTANGULAR) {
1778 if (sel.ob.y < term.top)
1779 sel.ob.y = term.top;
1780 if (sel.oe.y > term.bot)
1781 sel.oe.y = term.bot;
1782 } else {
1783 if (sel.ob.y < term.top) {
1784 sel.ob.y = term.top;
1785 sel.ob.x = 0;
1786 }
1787 if (sel.oe.y > term.bot) {
1788 sel.oe.y = term.bot;
1789 sel.oe.x = term.col;
1790 }
1791 }
1792 selnormalize();
1793 }
1794 }
1795
1796 void
1797 tnewline(int first_col)
1798 {
1799 int y = term.c.y;
1800
1801 if (y == term.bot) {
1802 tscrollup(term.top, 1);
1803 } else {
1804 y++;
1805 }
1806 tmoveto(first_col ? 0 : term.c.x, y);
1807 }
1808
1809 void
1810 csiparse(void)
1811 {
1812 char *p = csiescseq.buf, *np;
1813 long int v;
1814
1815 csiescseq.narg = 0;
1816 if (*p == '?') {
1817 csiescseq.priv = 1;
1818 p++;
1819 }
1820
1821 csiescseq.buf[csiescseq.len] = '\0';
1822 while (p < csiescseq.buf+csiescseq.len) {
1823 np = NULL;
1824 v = strtol(p, &np, 10);
1825 if (np == p)
1826 v = 0;
1827 if (v == LONG_MAX || v == LONG_MIN)
1828 v = -1;
1829 csiescseq.arg[csiescseq.narg++] = v;
1830 p = np;
1831 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1832 break;
1833 p++;
1834 }
1835 csiescseq.mode[0] = *p++;
1836 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1837 }
1838
1839 /* for absolute user moves, when decom is set */
1840 void
1841 tmoveato(int x, int y)
1842 {
1843 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1844 }
1845
1846 void
1847 tmoveto(int x, int y)
1848 {
1849 int miny, maxy;
1850
1851 if (term.c.state & CURSOR_ORIGIN) {
1852 miny = term.top;
1853 maxy = term.bot;
1854 } else {
1855 miny = 0;
1856 maxy = term.row - 1;
1857 }
1858 term.c.state &= ~CURSOR_WRAPNEXT;
1859 term.c.x = LIMIT(x, 0, term.col-1);
1860 term.c.y = LIMIT(y, miny, maxy);
1861 }
1862
1863 void
1864 tsetchar(Rune u, Glyph *attr, int x, int y)
1865 {
1866 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1867 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1868 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1869 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1870 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1871 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1872 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1873 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1874 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1875 };
1876
1877 /*
1878 * The table is proudly stolen from rxvt.
1879 */
1880 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1881 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1882 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1883
1884 if (term.line[y][x].mode & ATTR_WIDE) {
1885 if (x+1 < term.col) {
1886 term.line[y][x+1].u = ' ';
1887 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1888 }
1889 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1890 term.line[y][x-1].u = ' ';
1891 term.line[y][x-1].mode &= ~ATTR_WIDE;
1892 }
1893
1894 term.dirty[y] = 1;
1895 term.line[y][x] = *attr;
1896 term.line[y][x].u = u;
1897 }
1898
1899 void
1900 tclearregion(int x1, int y1, int x2, int y2)
1901 {
1902 int x, y, temp;
1903 Glyph *gp;
1904
1905 if (x1 > x2)
1906 temp = x1, x1 = x2, x2 = temp;
1907 if (y1 > y2)
1908 temp = y1, y1 = y2, y2 = temp;
1909
1910 LIMIT(x1, 0, term.col-1);
1911 LIMIT(x2, 0, term.col-1);
1912 LIMIT(y1, 0, term.row-1);
1913 LIMIT(y2, 0, term.row-1);
1914
1915 for (y = y1; y <= y2; y++) {
1916 term.dirty[y] = 1;
1917 for (x = x1; x <= x2; x++) {
1918 gp = &term.line[y][x];
1919 if (selected(x, y))
1920 selclear(NULL);
1921 gp->fg = term.c.attr.fg;
1922 gp->bg = term.c.attr.bg;
1923 gp->mode = 0;
1924 gp->u = ' ';
1925 }
1926 }
1927 }
1928
1929 void
1930 tdeletechar(int n)
1931 {
1932 int dst, src, size;
1933 Glyph *line;
1934
1935 LIMIT(n, 0, term.col - term.c.x);
1936
1937 dst = term.c.x;
1938 src = term.c.x + n;
1939 size = term.col - src;
1940 line = term.line[term.c.y];
1941
1942 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1943 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1944 }
1945
1946 void
1947 tinsertblank(int n)
1948 {
1949 int dst, src, size;
1950 Glyph *line;
1951
1952 LIMIT(n, 0, term.col - term.c.x);
1953
1954 dst = term.c.x + n;
1955 src = term.c.x;
1956 size = term.col - dst;
1957 line = term.line[term.c.y];
1958
1959 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1960 tclearregion(src, term.c.y, dst - 1, term.c.y);
1961 }
1962
1963 void
1964 tinsertblankline(int n)
1965 {
1966 if (BETWEEN(term.c.y, term.top, term.bot))
1967 tscrolldown(term.c.y, n);
1968 }
1969
1970 void
1971 tdeleteline(int n)
1972 {
1973 if (BETWEEN(term.c.y, term.top, term.bot))
1974 tscrollup(term.c.y, n);
1975 }
1976
1977 int32_t
1978 tdefcolor(int *attr, int *npar, int l)
1979 {
1980 int32_t idx = -1;
1981 uint r, g, b;
1982
1983 switch (attr[*npar + 1]) {
1984 case 2: /* direct color in RGB space */
1985 if (*npar + 4 >= l) {
1986 fprintf(stderr,
1987 "erresc(38): Incorrect number of parameters (%d)\n",
1988 *npar);
1989 break;
1990 }
1991 r = attr[*npar + 2];
1992 g = attr[*npar + 3];
1993 b = attr[*npar + 4];
1994 *npar += 4;
1995 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1996 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1997 r, g, b);
1998 else
1999 idx = TRUECOLOR(r, g, b);
2000 break;
2001 case 5: /* indexed color */
2002 if (*npar + 2 >= l) {
2003 fprintf(stderr,
2004 "erresc(38): Incorrect number of parameters (%d)\n",
2005 *npar);
2006 break;
2007 }
2008 *npar += 2;
2009 if (!BETWEEN(attr[*npar], 0, 255))
2010 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
2011 else
2012 idx = attr[*npar];
2013 break;
2014 case 0: /* implemented defined (only foreground) */
2015 case 1: /* transparent */
2016 case 3: /* direct color in CMY space */
2017 case 4: /* direct color in CMYK space */
2018 default:
2019 fprintf(stderr,
2020 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
2021 break;
2022 }
2023
2024 return idx;
2025 }
2026
2027 void
2028 tsetattr(int *attr, int l)
2029 {
2030 int i;
2031 int32_t idx;
2032
2033 for (i = 0; i < l; i++) {
2034 switch (attr[i]) {
2035 case 0:
2036 term.c.attr.mode &= ~(
2037 ATTR_BOLD |
2038 ATTR_FAINT |
2039 ATTR_ITALIC |
2040 ATTR_UNDERLINE |
2041 ATTR_BLINK |
2042 ATTR_REVERSE |
2043 ATTR_INVISIBLE |
2044 ATTR_STRUCK );
2045 term.c.attr.fg = defaultfg;
2046 term.c.attr.bg = defaultbg;
2047 break;
2048 case 1:
2049 term.c.attr.mode |= ATTR_BOLD;
2050 break;
2051 case 2:
2052 term.c.attr.mode |= ATTR_FAINT;
2053 break;
2054 case 3:
2055 term.c.attr.mode |= ATTR_ITALIC;
2056 break;
2057 case 4:
2058 term.c.attr.mode |= ATTR_UNDERLINE;
2059 break;
2060 case 5: /* slow blink */
2061 /* FALLTHROUGH */
2062 case 6: /* rapid blink */
2063 term.c.attr.mode |= ATTR_BLINK;
2064 break;
2065 case 7:
2066 term.c.attr.mode |= ATTR_REVERSE;
2067 break;
2068 case 8:
2069 term.c.attr.mode |= ATTR_INVISIBLE;
2070 break;
2071 case 9:
2072 term.c.attr.mode |= ATTR_STRUCK;
2073 break;
2074 case 22:
2075 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
2076 break;
2077 case 23:
2078 term.c.attr.mode &= ~ATTR_ITALIC;
2079 break;
2080 case 24:
2081 term.c.attr.mode &= ~ATTR_UNDERLINE;
2082 break;
2083 case 25:
2084 term.c.attr.mode &= ~ATTR_BLINK;
2085 break;
2086 case 27:
2087 term.c.attr.mode &= ~ATTR_REVERSE;
2088 break;
2089 case 28:
2090 term.c.attr.mode &= ~ATTR_INVISIBLE;
2091 break;
2092 case 29:
2093 term.c.attr.mode &= ~ATTR_STRUCK;
2094 break;
2095 case 38:
2096 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2097 term.c.attr.fg = idx;
2098 break;
2099 case 39:
2100 term.c.attr.fg = defaultfg;
2101 break;
2102 case 48:
2103 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2104 term.c.attr.bg = idx;
2105 break;
2106 case 49:
2107 term.c.attr.bg = defaultbg;
2108 break;
2109 default:
2110 if (BETWEEN(attr[i], 30, 37)) {
2111 term.c.attr.fg = attr[i] - 30;
2112 } else if (BETWEEN(attr[i], 40, 47)) {
2113 term.c.attr.bg = attr[i] - 40;
2114 } else if (BETWEEN(attr[i], 90, 97)) {
2115 term.c.attr.fg = attr[i] - 90 + 8;
2116 } else if (BETWEEN(attr[i], 100, 107)) {
2117 term.c.attr.bg = attr[i] - 100 + 8;
2118 } else {
2119 fprintf(stderr,
2120 "erresc(default): gfx attr %d unknown\n",
2121 attr[i]), csidump();
2122 }
2123 break;
2124 }
2125 }
2126 }
2127
2128 void
2129 tsetscroll(int t, int b)
2130 {
2131 int temp;
2132
2133 LIMIT(t, 0, term.row-1);
2134 LIMIT(b, 0, term.row-1);
2135 if (t > b) {
2136 temp = t;
2137 t = b;
2138 b = temp;
2139 }
2140 term.top = t;
2141 term.bot = b;
2142 }
2143
2144 void
2145 tsetmode(int priv, int set, int *args, int narg)
2146 {
2147 int *lim, mode;
2148 int alt;
2149
2150 for (lim = args + narg; args < lim; ++args) {
2151 if (priv) {
2152 switch (*args) {
2153 case 1: /* DECCKM -- Cursor key */
2154 MODBIT(term.mode, set, MODE_APPCURSOR);
2155 break;
2156 case 5: /* DECSCNM -- Reverse video */
2157 mode = term.mode;
2158 MODBIT(term.mode, set, MODE_REVERSE);
2159 if (mode != term.mode)
2160 redraw();
2161 break;
2162 case 6: /* DECOM -- Origin */
2163 MODBIT(term.c.state, set, CURSOR_ORIGIN);
2164 tmoveato(0, 0);
2165 break;
2166 case 7: /* DECAWM -- Auto wrap */
2167 MODBIT(term.mode, set, MODE_WRAP);
2168 break;
2169 case 0: /* Error (IGNORED) */
2170 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
2171 case 3: /* DECCOLM -- Column (IGNORED) */
2172 case 4: /* DECSCLM -- Scroll (IGNORED) */
2173 case 8: /* DECARM -- Auto repeat (IGNORED) */
2174 case 18: /* DECPFF -- Printer feed (IGNORED) */
2175 case 19: /* DECPEX -- Printer extent (IGNORED) */
2176 case 42: /* DECNRCM -- National characters (IGNORED) */
2177 case 12: /* att610 -- Start blinking cursor (IGNORED) */
2178 break;
2179 case 25: /* DECTCEM -- Text Cursor Enable Mode */
2180 MODBIT(term.mode, !set, MODE_HIDE);
2181 break;
2182 case 9: /* X10 mouse compatibility mode */
2183 xsetpointermotion(0);
2184 MODBIT(term.mode, 0, MODE_MOUSE);
2185 MODBIT(term.mode, set, MODE_MOUSEX10);
2186 break;
2187 case 1000: /* 1000: report button press */
2188 xsetpointermotion(0);
2189 MODBIT(term.mode, 0, MODE_MOUSE);
2190 MODBIT(term.mode, set, MODE_MOUSEBTN);
2191 break;
2192 case 1002: /* 1002: report motion on button press */
2193 xsetpointermotion(0);
2194 MODBIT(term.mode, 0, MODE_MOUSE);
2195 MODBIT(term.mode, set, MODE_MOUSEMOTION);
2196 break;
2197 case 1003: /* 1003: enable all mouse motions */
2198 xsetpointermotion(set);
2199 MODBIT(term.mode, 0, MODE_MOUSE);
2200 MODBIT(term.mode, set, MODE_MOUSEMANY);
2201 break;
2202 case 1004: /* 1004: send focus events to tty */
2203 MODBIT(term.mode, set, MODE_FOCUS);
2204 break;
2205 case 1006: /* 1006: extended reporting mode */
2206 MODBIT(term.mode, set, MODE_MOUSESGR);
2207 break;
2208 case 1034:
2209 MODBIT(term.mode, set, MODE_8BIT);
2210 break;
2211 case 1049: /* swap screen & set/restore cursor as xterm */
2212 if (!allowaltscreen)
2213 break;
2214 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2215 /* FALLTHROUGH */
2216 case 47: /* swap screen */
2217 case 1047:
2218 if (!allowaltscreen)
2219 break;
2220 alt = IS_SET(MODE_ALTSCREEN);
2221 if (alt) {
2222 tclearregion(0, 0, term.col-1,
2223 term.row-1);
2224 }
2225 if (set ^ alt) /* set is always 1 or 0 */
2226 tswapscreen();
2227 if (*args != 1049)
2228 break;
2229 /* FALLTHROUGH */
2230 case 1048:
2231 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2232 break;
2233 case 2004: /* 2004: bracketed paste mode */
2234 MODBIT(term.mode, set, MODE_BRCKTPASTE);
2235 break;
2236 /* Not implemented mouse modes. See comments there. */
2237 case 1001: /* mouse highlight mode; can hang the
2238 terminal by design when implemented. */
2239 case 1005: /* UTF-8 mouse mode; will confuse
2240 applications not supporting UTF-8
2241 and luit. */
2242 case 1015: /* urxvt mangled mouse mode; incompatible
2243 and can be mistaken for other control
2244 codes. */
2245 default:
2246 fprintf(stderr,
2247 "erresc: unknown private set/reset mode %d\n",
2248 *args);
2249 break;
2250 }
2251 } else {
2252 switch (*args) {
2253 case 0: /* Error (IGNORED) */
2254 break;
2255 case 2: /* KAM -- keyboard action */
2256 MODBIT(term.mode, set, MODE_KBDLOCK);
2257 break;
2258 case 4: /* IRM -- Insertion-replacement */
2259 MODBIT(term.mode, set, MODE_INSERT);
2260 break;
2261 case 12: /* SRM -- Send/Receive */
2262 MODBIT(term.mode, !set, MODE_ECHO);
2263 break;
2264 case 20: /* LNM -- Linefeed/new line */
2265 MODBIT(term.mode, set, MODE_CRLF);
2266 break;
2267 default:
2268 fprintf(stderr,
2269 "erresc: unknown set/reset mode %d\n",
2270 *args);
2271 break;
2272 }
2273 }
2274 }
2275 }
2276
2277 void
2278 csihandle(void)
2279 {
2280 char buf[40];
2281 int len;
2282
2283 switch (csiescseq.mode[0]) {
2284 default:
2285 unknown:
2286 fprintf(stderr, "erresc: unknown csi ");
2287 csidump();
2288 /* die(""); */
2289 break;
2290 case '@': /* ICH -- Insert <n> blank char */
2291 DEFAULT(csiescseq.arg[0], 1);
2292 tinsertblank(csiescseq.arg[0]);
2293 break;
2294 case 'A': /* CUU -- Cursor <n> Up */
2295 DEFAULT(csiescseq.arg[0], 1);
2296 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2297 break;
2298 case 'B': /* CUD -- Cursor <n> Down */
2299 case 'e': /* VPR --Cursor <n> Down */
2300 DEFAULT(csiescseq.arg[0], 1);
2301 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2302 break;
2303 case 'i': /* MC -- Media Copy */
2304 switch (csiescseq.arg[0]) {
2305 case 0:
2306 tdump();
2307 break;
2308 case 1:
2309 tdumpline(term.c.y);
2310 break;
2311 case 2:
2312 tdumpsel();
2313 break;
2314 case 4:
2315 term.mode &= ~MODE_PRINT;
2316 break;
2317 case 5:
2318 term.mode |= MODE_PRINT;
2319 break;
2320 }
2321 break;
2322 case 'c': /* DA -- Device Attributes */
2323 if (csiescseq.arg[0] == 0)
2324 ttywrite(vtiden, sizeof(vtiden) - 1);
2325 break;
2326 case 'C': /* CUF -- Cursor <n> Forward */
2327 case 'a': /* HPR -- Cursor <n> Forward */
2328 DEFAULT(csiescseq.arg[0], 1);
2329 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2330 break;
2331 case 'D': /* CUB -- Cursor <n> Backward */
2332 DEFAULT(csiescseq.arg[0], 1);
2333 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2334 break;
2335 case 'E': /* CNL -- Cursor <n> Down and first col */
2336 DEFAULT(csiescseq.arg[0], 1);
2337 tmoveto(0, term.c.y+csiescseq.arg[0]);
2338 break;
2339 case 'F': /* CPL -- Cursor <n> Up and first col */
2340 DEFAULT(csiescseq.arg[0], 1);
2341 tmoveto(0, term.c.y-csiescseq.arg[0]);
2342 break;
2343 case 'g': /* TBC -- Tabulation clear */
2344 switch (csiescseq.arg[0]) {
2345 case 0: /* clear current tab stop */
2346 term.tabs[term.c.x] = 0;
2347 break;
2348 case 3: /* clear all the tabs */
2349 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2350 break;
2351 default:
2352 goto unknown;
2353 }
2354 break;
2355 case 'G': /* CHA -- Move to <col> */
2356 case '`': /* HPA */
2357 DEFAULT(csiescseq.arg[0], 1);
2358 tmoveto(csiescseq.arg[0]-1, term.c.y);
2359 break;
2360 case 'H': /* CUP -- Move to <row> <col> */
2361 case 'f': /* HVP */
2362 DEFAULT(csiescseq.arg[0], 1);
2363 DEFAULT(csiescseq.arg[1], 1);
2364 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2365 break;
2366 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2367 DEFAULT(csiescseq.arg[0], 1);
2368 tputtab(csiescseq.arg[0]);
2369 break;
2370 case 'J': /* ED -- Clear screen */
2371 selclear(NULL);
2372 switch (csiescseq.arg[0]) {
2373 case 0: /* below */
2374 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2375 if (term.c.y < term.row-1) {
2376 tclearregion(0, term.c.y+1, term.col-1,
2377 term.row-1);
2378 }
2379 break;
2380 case 1: /* above */
2381 if (term.c.y > 1)
2382 tclearregion(0, 0, term.col-1, term.c.y-1);
2383 tclearregion(0, term.c.y, term.c.x, term.c.y);
2384 break;
2385 case 2: /* all */
2386 tclearregion(0, 0, term.col-1, term.row-1);
2387 break;
2388 default:
2389 goto unknown;
2390 }
2391 break;
2392 case 'K': /* EL -- Clear line */
2393 switch (csiescseq.arg[0]) {
2394 case 0: /* right */
2395 tclearregion(term.c.x, term.c.y, term.col-1,
2396 term.c.y);
2397 break;
2398 case 1: /* left */
2399 tclearregion(0, term.c.y, term.c.x, term.c.y);
2400 break;
2401 case 2: /* all */
2402 tclearregion(0, term.c.y, term.col-1, term.c.y);
2403 break;
2404 }
2405 break;
2406 case 'S': /* SU -- Scroll <n> line up */
2407 DEFAULT(csiescseq.arg[0], 1);
2408 tscrollup(term.top, csiescseq.arg[0]);
2409 break;
2410 case 'T': /* SD -- Scroll <n> line down */
2411 DEFAULT(csiescseq.arg[0], 1);
2412 tscrolldown(term.top, csiescseq.arg[0]);
2413 break;
2414 case 'L': /* IL -- Insert <n> blank lines */
2415 DEFAULT(csiescseq.arg[0], 1);
2416 tinsertblankline(csiescseq.arg[0]);
2417 break;
2418 case 'l': /* RM -- Reset Mode */
2419 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2420 break;
2421 case 'M': /* DL -- Delete <n> lines */
2422 DEFAULT(csiescseq.arg[0], 1);
2423 tdeleteline(csiescseq.arg[0]);
2424 break;
2425 case 'X': /* ECH -- Erase <n> char */
2426 DEFAULT(csiescseq.arg[0], 1);
2427 tclearregion(term.c.x, term.c.y,
2428 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2429 break;
2430 case 'P': /* DCH -- Delete <n> char */
2431 DEFAULT(csiescseq.arg[0], 1);
2432 tdeletechar(csiescseq.arg[0]);
2433 break;
2434 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2435 DEFAULT(csiescseq.arg[0], 1);
2436 tputtab(-csiescseq.arg[0]);
2437 break;
2438 case 'd': /* VPA -- Move to <row> */
2439 DEFAULT(csiescseq.arg[0], 1);
2440 tmoveato(term.c.x, csiescseq.arg[0]-1);
2441 break;
2442 case 'h': /* SM -- Set terminal mode */
2443 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2444 break;
2445 case 'm': /* SGR -- Terminal attribute (color) */
2446 tsetattr(csiescseq.arg, csiescseq.narg);
2447 break;
2448 case 'n': /* DSR – Device Status Report (cursor position) */
2449 if (csiescseq.arg[0] == 6) {
2450 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2451 term.c.y+1, term.c.x+1);
2452 ttywrite(buf, len);
2453 }
2454 break;
2455 case 'r': /* DECSTBM -- Set Scrolling Region */
2456 if (csiescseq.priv) {
2457 goto unknown;
2458 } else {
2459 DEFAULT(csiescseq.arg[0], 1);
2460 DEFAULT(csiescseq.arg[1], term.row);
2461 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2462 tmoveato(0, 0);
2463 }
2464 break;
2465 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2466 tcursor(CURSOR_SAVE);
2467 break;
2468 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2469 tcursor(CURSOR_LOAD);
2470 break;
2471 case ' ':
2472 switch (csiescseq.mode[1]) {
2473 case 'q': /* DECSCUSR -- Set Cursor Style */
2474 DEFAULT(csiescseq.arg[0], 1);
2475 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2476 goto unknown;
2477 }
2478 xw.cursor = csiescseq.arg[0];
2479 break;
2480 default:
2481 goto unknown;
2482 }
2483 break;
2484 }
2485 }
2486
2487 void
2488 csidump(void)
2489 {
2490 int i;
2491 uint c;
2492
2493 fprintf(stderr, "ESC[");
2494 for (i = 0; i < csiescseq.len; i++) {
2495 c = csiescseq.buf[i] & 0xff;
2496 if (isprint(c)) {
2497 putc(c, stderr);
2498 } else if (c == '\n') {
2499 fprintf(stderr, "(\\n)");
2500 } else if (c == '\r') {
2501 fprintf(stderr, "(\\r)");
2502 } else if (c == 0x1b) {
2503 fprintf(stderr, "(\\e)");
2504 } else {
2505 fprintf(stderr, "(%02x)", c);
2506 }
2507 }
2508 putc('\n', stderr);
2509 }
2510
2511 void
2512 csireset(void)
2513 {
2514 memset(&csiescseq, 0, sizeof(csiescseq));
2515 }
2516
2517 void
2518 strhandle(void)
2519 {
2520 char *p = NULL;
2521 int j, narg, par;
2522
2523 term.esc &= ~(ESC_STR_END|ESC_STR);
2524 strparse();
2525 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2526
2527 switch (strescseq.type) {
2528 case ']': /* OSC -- Operating System Command */
2529 switch (par) {
2530 case 0:
2531 case 1:
2532 case 2:
2533 if (narg > 1)
2534 xsettitle(strescseq.args[1]);
2535 return;
2536 case 4: /* color set */
2537 if (narg < 3)
2538 break;
2539 p = strescseq.args[2];
2540 /* FALLTHROUGH */
2541 case 104: /* color reset, here p = NULL */
2542 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2543 if (xsetcolorname(j, p)) {
2544 fprintf(stderr, "erresc: invalid color %s\n", p);
2545 } else {
2546 /*
2547 * TODO if defaultbg color is changed, borders
2548 * are dirty
2549 */
2550 redraw();
2551 }
2552 return;
2553 }
2554 break;
2555 case 'k': /* old title set compatibility */
2556 xsettitle(strescseq.args[0]);
2557 return;
2558 case 'P': /* DCS -- Device Control String */
2559 term.mode |= ESC_DCS;
2560 case '_': /* APC -- Application Program Command */
2561 case '^': /* PM -- Privacy Message */
2562 return;
2563 }
2564
2565 fprintf(stderr, "erresc: unknown str ");
2566 strdump();
2567 }
2568
2569 void
2570 strparse(void)
2571 {
2572 int c;
2573 char *p = strescseq.buf;
2574
2575 strescseq.narg = 0;
2576 strescseq.buf[strescseq.len] = '\0';
2577
2578 if (*p == '\0')
2579 return;
2580
2581 while (strescseq.narg < STR_ARG_SIZ) {
2582 strescseq.args[strescseq.narg++] = p;
2583 while ((c = *p) != ';' && c != '\0')
2584 ++p;
2585 if (c == '\0')
2586 return;
2587 *p++ = '\0';
2588 }
2589 }
2590
2591 void
2592 strdump(void)
2593 {
2594 int i;
2595 uint c;
2596
2597 fprintf(stderr, "ESC%c", strescseq.type);
2598 for (i = 0; i < strescseq.len; i++) {
2599 c = strescseq.buf[i] & 0xff;
2600 if (c == '\0') {
2601 putc('\n', stderr);
2602 return;
2603 } else if (isprint(c)) {
2604 putc(c, stderr);
2605 } else if (c == '\n') {
2606 fprintf(stderr, "(\\n)");
2607 } else if (c == '\r') {
2608 fprintf(stderr, "(\\r)");
2609 } else if (c == 0x1b) {
2610 fprintf(stderr, "(\\e)");
2611 } else {
2612 fprintf(stderr, "(%02x)", c);
2613 }
2614 }
2615 fprintf(stderr, "ESC\\\n");
2616 }
2617
2618 void
2619 strreset(void)
2620 {
2621 memset(&strescseq, 0, sizeof(strescseq));
2622 }
2623
2624 void
2625 sendbreak(const Arg *arg)
2626 {
2627 if (tcsendbreak(cmdfd, 0))
2628 perror("Error sending break");
2629 }
2630
2631 void
2632 tprinter(char *s, size_t len)
2633 {
2634 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
2635 fprintf(stderr, "Error writing in %s:%s\n",
2636 opt_io, strerror(errno));
2637 close(iofd);
2638 iofd = -1;
2639 }
2640 }
2641
2642 void
2643 iso14755(const Arg *arg)
2644 {
2645 char cmd[sizeof(ISO14755CMD) + NUMMAXLEN(xw.win)];
2646 FILE *p;
2647 char *us, *e, codepoint[9], uc[UTF_SIZ];
2648 unsigned long utf32;
2649
2650 snprintf(cmd, sizeof(cmd), ISO14755CMD, xw.win);
2651 if (!(p = popen(cmd, "r")))
2652 return;
2653
2654 us = fgets(codepoint, sizeof(codepoint), p);
2655 pclose(p);
2656
2657 if (!us || *us == '\0' || *us == '-' || strlen(us) > 7)
2658 return;
2659 if ((utf32 = strtoul(us, &e, 16)) == ULONG_MAX ||
2660 (*e != '\n' && *e != '\0'))
2661 return;
2662
2663 ttysend(uc, utf8encode(utf32, uc));
2664 }
2665
2666 void
2667 toggleprinter(const Arg *arg)
2668 {
2669 term.mode ^= MODE_PRINT;
2670 }
2671
2672 void
2673 printscreen(const Arg *arg)
2674 {
2675 tdump();
2676 }
2677
2678 void
2679 printsel(const Arg *arg)
2680 {
2681 tdumpsel();
2682 }
2683
2684 void
2685 tdumpsel(void)
2686 {
2687 char *ptr;
2688
2689 if ((ptr = getsel())) {
2690 tprinter(ptr, strlen(ptr));
2691 free(ptr);
2692 }
2693 }
2694
2695 void
2696 tdumpline(int n)
2697 {
2698 char buf[UTF_SIZ];
2699 Glyph *bp, *end;
2700
2701 bp = &term.line[n][0];
2702 end = &bp[MIN(tlinelen(n), term.col) - 1];
2703 if (bp != end || bp->u != ' ') {
2704 for ( ;bp <= end; ++bp)
2705 tprinter(buf, utf8encode(bp->u, buf));
2706 }
2707 tprinter("\n", 1);
2708 }
2709
2710 void
2711 tdump(void)
2712 {
2713 int i;
2714
2715 for (i = 0; i < term.row; ++i)
2716 tdumpline(i);
2717 }
2718
2719 void
2720 tputtab(int n)
2721 {
2722 uint x = term.c.x;
2723
2724 if (n > 0) {
2725 while (x < term.col && n--)
2726 for (++x; x < term.col && !term.tabs[x]; ++x)
2727 /* nothing */ ;
2728 } else if (n < 0) {
2729 while (x > 0 && n++)
2730 for (--x; x > 0 && !term.tabs[x]; --x)
2731 /* nothing */ ;
2732 }
2733 term.c.x = LIMIT(x, 0, term.col-1);
2734 }
2735
2736 void
2737 techo(Rune u)
2738 {
2739 if (ISCONTROL(u)) { /* control code */
2740 if (u & 0x80) {
2741 u &= 0x7f;
2742 tputc('^');
2743 tputc('[');
2744 } else if (u != '\n' && u != '\r' && u != '\t') {
2745 u ^= 0x40;
2746 tputc('^');
2747 }
2748 }
2749 tputc(u);
2750 }
2751
2752 void
2753 tdefutf8(char ascii)
2754 {
2755 if (ascii == 'G')
2756 term.mode |= MODE_UTF8;
2757 else if (ascii == '@')
2758 term.mode &= ~MODE_UTF8;
2759 }
2760
2761 void
2762 tdeftran(char ascii)
2763 {
2764 static char cs[] = "0B";
2765 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2766 char *p;
2767
2768 if ((p = strchr(cs, ascii)) == NULL) {
2769 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2770 } else {
2771 term.trantbl[term.icharset] = vcs[p - cs];
2772 }
2773 }
2774
2775 void
2776 tdectest(char c)
2777 {
2778 int x, y;
2779
2780 if (c == '8') { /* DEC screen alignment test. */
2781 for (x = 0; x < term.col; ++x) {
2782 for (y = 0; y < term.row; ++y)
2783 tsetchar('E', &term.c.attr, x, y);
2784 }
2785 }
2786 }
2787
2788 void
2789 tstrsequence(uchar c)
2790 {
2791 strreset();
2792
2793 switch (c) {
2794 case 0x90: /* DCS -- Device Control String */
2795 c = 'P';
2796 term.esc |= ESC_DCS;
2797 break;
2798 case 0x9f: /* APC -- Application Program Command */
2799 c = '_';
2800 break;
2801 case 0x9e: /* PM -- Privacy Message */
2802 c = '^';
2803 break;
2804 case 0x9d: /* OSC -- Operating System Command */
2805 c = ']';
2806 break;
2807 }
2808 strescseq.type = c;
2809 term.esc |= ESC_STR;
2810 }
2811
2812 void
2813 tcontrolcode(uchar ascii)
2814 {
2815 switch (ascii) {
2816 case '\t': /* HT */
2817 tputtab(1);
2818 return;
2819 case '\b': /* BS */
2820 tmoveto(term.c.x-1, term.c.y);
2821 return;
2822 case '\r': /* CR */
2823 tmoveto(0, term.c.y);
2824 return;
2825 case '\f': /* LF */
2826 case '\v': /* VT */
2827 case '\n': /* LF */
2828 /* go to first col if the mode is set */
2829 tnewline(IS_SET(MODE_CRLF));
2830 return;
2831 case '\a': /* BEL */
2832 if (term.esc & ESC_STR_END) {
2833 /* backwards compatibility to xterm */
2834 strhandle();
2835 } else {
2836 if (!(xw.state & WIN_FOCUSED))
2837 xseturgency(1);
2838 if (bellvolume)
2839 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2840 }
2841 break;
2842 case '\033': /* ESC */
2843 csireset();
2844 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2845 term.esc |= ESC_START;
2846 return;
2847 case '\016': /* SO (LS1 -- Locking shift 1) */
2848 case '\017': /* SI (LS0 -- Locking shift 0) */
2849 term.charset = 1 - (ascii - '\016');
2850 return;
2851 case '\032': /* SUB */
2852 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2853 case '\030': /* CAN */
2854 csireset();
2855 break;
2856 case '\005': /* ENQ (IGNORED) */
2857 case '\000': /* NUL (IGNORED) */
2858 case '\021': /* XON (IGNORED) */
2859 case '\023': /* XOFF (IGNORED) */
2860 case 0177: /* DEL (IGNORED) */
2861 return;
2862 case 0x80: /* TODO: PAD */
2863 case 0x81: /* TODO: HOP */
2864 case 0x82: /* TODO: BPH */
2865 case 0x83: /* TODO: NBH */
2866 case 0x84: /* TODO: IND */
2867 break;
2868 case 0x85: /* NEL -- Next line */
2869 tnewline(1); /* always go to first col */
2870 break;
2871 case 0x86: /* TODO: SSA */
2872 case 0x87: /* TODO: ESA */
2873 break;
2874 case 0x88: /* HTS -- Horizontal tab stop */
2875 term.tabs[term.c.x] = 1;
2876 break;
2877 case 0x89: /* TODO: HTJ */
2878 case 0x8a: /* TODO: VTS */
2879 case 0x8b: /* TODO: PLD */
2880 case 0x8c: /* TODO: PLU */
2881 case 0x8d: /* TODO: RI */
2882 case 0x8e: /* TODO: SS2 */
2883 case 0x8f: /* TODO: SS3 */
2884 case 0x91: /* TODO: PU1 */
2885 case 0x92: /* TODO: PU2 */
2886 case 0x93: /* TODO: STS */
2887 case 0x94: /* TODO: CCH */
2888 case 0x95: /* TODO: MW */
2889 case 0x96: /* TODO: SPA */
2890 case 0x97: /* TODO: EPA */
2891 case 0x98: /* TODO: SOS */
2892 case 0x99: /* TODO: SGCI */
2893 break;
2894 case 0x9a: /* DECID -- Identify Terminal */
2895 ttywrite(vtiden, sizeof(vtiden) - 1);
2896 break;
2897 case 0x9b: /* TODO: CSI */
2898 case 0x9c: /* TODO: ST */
2899 break;
2900 case 0x90: /* DCS -- Device Control String */
2901 case 0x9d: /* OSC -- Operating System Command */
2902 case 0x9e: /* PM -- Privacy Message */
2903 case 0x9f: /* APC -- Application Program Command */
2904 tstrsequence(ascii);
2905 return;
2906 }
2907 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2908 term.esc &= ~(ESC_STR_END|ESC_STR);
2909 }
2910
2911 /*
2912 * returns 1 when the sequence is finished and it hasn't to read
2913 * more characters for this sequence, otherwise 0
2914 */
2915 int
2916 eschandle(uchar ascii)
2917 {
2918 switch (ascii) {
2919 case '[':
2920 term.esc |= ESC_CSI;
2921 return 0;
2922 case '#':
2923 term.esc |= ESC_TEST;
2924 return 0;
2925 case '%':
2926 term.esc |= ESC_UTF8;
2927 return 0;
2928 case 'P': /* DCS -- Device Control String */
2929 case '_': /* APC -- Application Program Command */
2930 case '^': /* PM -- Privacy Message */
2931 case ']': /* OSC -- Operating System Command */
2932 case 'k': /* old title set compatibility */
2933 tstrsequence(ascii);
2934 return 0;
2935 case 'n': /* LS2 -- Locking shift 2 */
2936 case 'o': /* LS3 -- Locking shift 3 */
2937 term.charset = 2 + (ascii - 'n');
2938 break;
2939 case '(': /* GZD4 -- set primary charset G0 */
2940 case ')': /* G1D4 -- set secondary charset G1 */
2941 case '*': /* G2D4 -- set tertiary charset G2 */
2942 case '+': /* G3D4 -- set quaternary charset G3 */
2943 term.icharset = ascii - '(';
2944 term.esc |= ESC_ALTCHARSET;
2945 return 0;
2946 case 'D': /* IND -- Linefeed */
2947 if (term.c.y == term.bot) {
2948 tscrollup(term.top, 1);
2949 } else {
2950 tmoveto(term.c.x, term.c.y+1);
2951 }
2952 break;
2953 case 'E': /* NEL -- Next line */
2954 tnewline(1); /* always go to first col */
2955 break;
2956 case 'H': /* HTS -- Horizontal tab stop */
2957 term.tabs[term.c.x] = 1;
2958 break;
2959 case 'M': /* RI -- Reverse index */
2960 if (term.c.y == term.top) {
2961 tscrolldown(term.top, 1);
2962 } else {
2963 tmoveto(term.c.x, term.c.y-1);
2964 }
2965 break;
2966 case 'Z': /* DECID -- Identify Terminal */
2967 ttywrite(vtiden, sizeof(vtiden) - 1);
2968 break;
2969 case 'c': /* RIS -- Reset to inital state */
2970 treset();
2971 xresettitle();
2972 xloadcols();
2973 break;
2974 case '=': /* DECPAM -- Application keypad */
2975 term.mode |= MODE_APPKEYPAD;
2976 break;
2977 case '>': /* DECPNM -- Normal keypad */
2978 term.mode &= ~MODE_APPKEYPAD;
2979 break;
2980 case '7': /* DECSC -- Save Cursor */
2981 tcursor(CURSOR_SAVE);
2982 break;
2983 case '8': /* DECRC -- Restore Cursor */
2984 tcursor(CURSOR_LOAD);
2985 break;
2986 case '\\': /* ST -- String Terminator */
2987 if (term.esc & ESC_STR_END)
2988 strhandle();
2989 break;
2990 default:
2991 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2992 (uchar) ascii, isprint(ascii)? ascii:'.');
2993 break;
2994 }
2995 return 1;
2996 }
2997
2998 void
2999 tputc(Rune u)
3000 {
3001 char c[UTF_SIZ];
3002 int control;
3003 int width, len;
3004 Glyph *gp;
3005
3006 control = ISCONTROL(u);
3007 if (!IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
3008 c[0] = u;
3009 width = len = 1;
3010 } else {
3011 len = utf8encode(u, c);
3012 if (!control && (width = wcwidth(u)) == -1) {
3013 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
3014 width = 1;
3015 }
3016 }
3017
3018 if (IS_SET(MODE_PRINT))
3019 tprinter(c, len);
3020
3021 /*
3022 * STR sequence must be checked before anything else
3023 * because it uses all following characters until it
3024 * receives a ESC, a SUB, a ST or any other C1 control
3025 * character.
3026 */
3027 if (term.esc & ESC_STR) {
3028 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
3029 ISCONTROLC1(u)) {
3030 term.esc &= ~(ESC_START|ESC_STR|ESC_DCS);
3031 if (IS_SET(MODE_SIXEL)) {
3032 /* TODO: render sixel */;
3033 term.mode &= ~MODE_SIXEL;
3034 return;
3035 }
3036 term.esc |= ESC_STR_END;
3037 goto check_control_code;
3038 }
3039
3040
3041 if (IS_SET(MODE_SIXEL)) {
3042 /* TODO: implement sixel mode */
3043 return;
3044 }
3045 if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
3046 term.mode |= MODE_SIXEL;
3047
3048 if (strescseq.len+len >= sizeof(strescseq.buf)-1) {
3049 /*
3050 * Here is a bug in terminals. If the user never sends
3051 * some code to stop the str or esc command, then st
3052 * will stop responding. But this is better than
3053 * silently failing with unknown characters. At least
3054 * then users will report back.
3055 *
3056 * In the case users ever get fixed, here is the code:
3057 */
3058 /*
3059 * term.esc = 0;
3060 * strhandle();
3061 */
3062 return;
3063 }
3064
3065 memmove(&strescseq.buf[strescseq.len], c, len);
3066 strescseq.len += len;
3067 return;
3068 }
3069
3070 check_control_code:
3071 /*
3072 * Actions of control codes must be performed as soon they arrive
3073 * because they can be embedded inside a control sequence, and
3074 * they must not cause conflicts with sequences.
3075 */
3076 if (control) {
3077 tcontrolcode(u);
3078 /*
3079 * control codes are not shown ever
3080 */
3081 return;
3082 } else if (term.esc & ESC_START) {
3083 if (term.esc & ESC_CSI) {
3084 csiescseq.buf[csiescseq.len++] = u;
3085 if (BETWEEN(u, 0x40, 0x7E)
3086 || csiescseq.len >= \
3087 sizeof(csiescseq.buf)-1) {
3088 term.esc = 0;
3089 csiparse();
3090 csihandle();
3091 }
3092 return;
3093 } else if (term.esc & ESC_UTF8) {
3094 tdefutf8(u);
3095 } else if (term.esc & ESC_ALTCHARSET) {
3096 tdeftran(u);
3097 } else if (term.esc & ESC_TEST) {
3098 tdectest(u);
3099 } else {
3100 if (!eschandle(u))
3101 return;
3102 /* sequence already finished */
3103 }
3104 term.esc = 0;
3105 /*
3106 * All characters which form part of a sequence are not
3107 * printed
3108 */
3109 return;
3110 }
3111 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
3112 selclear(NULL);
3113
3114 gp = &term.line[term.c.y][term.c.x];
3115 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
3116 gp->mode |= ATTR_WRAP;
3117 tnewline(1);
3118 gp = &term.line[term.c.y][term.c.x];
3119 }
3120
3121 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
3122 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
3123
3124 if (term.c.x+width > term.col) {
3125 tnewline(1);
3126 gp = &term.line[term.c.y][term.c.x];
3127 }
3128
3129 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
3130
3131 if (width == 2) {
3132 gp->mode |= ATTR_WIDE;
3133 if (term.c.x+1 < term.col) {
3134 gp[1].u = '\0';
3135 gp[1].mode = ATTR_WDUMMY;
3136 }
3137 }
3138 if (term.c.x+width < term.col) {
3139 tmoveto(term.c.x+width, term.c.y);
3140 } else {
3141 term.c.state |= CURSOR_WRAPNEXT;
3142 }
3143 }
3144
3145 void
3146 tresize(int col, int row)
3147 {
3148 int i;
3149 int minrow = MIN(row, term.row);
3150 int mincol = MIN(col, term.col);
3151 int *bp;
3152 TCursor c;
3153
3154 if (col < 1 || row < 1) {
3155 fprintf(stderr,
3156 "tresize: error resizing to %dx%d\n", col, row);
3157 return;
3158 }
3159
3160 /*
3161 * slide screen to keep cursor where we expect it -
3162 * tscrollup would work here, but we can optimize to
3163 * memmove because we're freeing the earlier lines
3164 */
3165 for (i = 0; i <= term.c.y - row; i++) {
3166 free(term.line[i]);
3167 free(term.alt[i]);
3168 }
3169 /* ensure that both src and dst are not NULL */
3170 if (i > 0) {
3171 memmove(term.line, term.line + i, row * sizeof(Line));
3172 memmove(term.alt, term.alt + i, row * sizeof(Line));
3173 }
3174 for (i += row; i < term.row; i++) {
3175 free(term.line[i]);
3176 free(term.alt[i]);
3177 }
3178
3179 /* resize to new width */
3180 term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
3181
3182 /* resize to new height */
3183 term.line = xrealloc(term.line, row * sizeof(Line));
3184 term.alt = xrealloc(term.alt, row * sizeof(Line));
3185 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
3186 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
3187
3188 /* resize each row to new width, zero-pad if needed */
3189 for (i = 0; i < minrow; i++) {
3190 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
3191 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
3192 }
3193
3194 /* allocate any new rows */
3195 for (/* i == minrow */; i < row; i++) {
3196 term.line[i] = xmalloc(col * sizeof(Glyph));
3197 term.alt[i] = xmalloc(col * sizeof(Glyph));
3198 }
3199 if (col > term.col) {
3200 bp = term.tabs + term.col;
3201
3202 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
3203 while (--bp > term.tabs && !*bp)
3204 /* nothing */ ;
3205 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
3206 *bp = 1;
3207 }
3208 /* update terminal size */
3209 term.col = col;
3210 term.row = row;
3211 /* reset scrolling region */
3212 tsetscroll(0, row-1);
3213 /* make use of the LIMIT in tmoveto */
3214 tmoveto(term.c.x, term.c.y);
3215 /* Clearing both screens (it makes dirty all lines) */
3216 c = term.c;
3217 for (i = 0; i < 2; i++) {
3218 if (mincol < col && 0 < minrow) {
3219 tclearregion(mincol, 0, col - 1, minrow - 1);
3220 }
3221 if (0 < col && minrow < row) {
3222 tclearregion(0, minrow, col - 1, row - 1);
3223 }
3224 tswapscreen();
3225 tcursor(CURSOR_LOAD);
3226 }
3227 term.c = c;
3228 }
3229
3230 void
3231 xresize(int col, int row)
3232 {
3233 xw.tw = MAX(1, col * xw.cw);
3234 xw.th = MAX(1, row * xw.ch);
3235
3236 XFreePixmap(xw.dpy, xw.buf);
3237 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3238 DefaultDepth(xw.dpy, xw.scr));
3239 XftDrawChange(xw.draw, xw.buf);
3240 xclear(0, 0, xw.w, xw.h);
3241 }
3242
3243 ushort
3244 sixd_to_16bit(int x)
3245 {
3246 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
3247 }
3248
3249 int
3250 xloadcolor(int i, const char *name, Color *ncolor)
3251 {
3252 XRenderColor color = { .alpha = 0xffff };
3253
3254 if (!name) {
3255 if (BETWEEN(i, 16, 255)) { /* 256 color */
3256 if (i < 6*6*6+16) { /* same colors as xterm */
3257 color.red = sixd_to_16bit( ((i-16)/36)%6 );
3258 color.green = sixd_to_16bit( ((i-16)/6) %6 );
3259 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
3260 } else { /* greyscale */
3261 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
3262 color.green = color.blue = color.red;
3263 }
3264 return XftColorAllocValue(xw.dpy, xw.vis,
3265 xw.cmap, &color, ncolor);
3266 } else
3267 name = colorname[i];
3268 }
3269
3270 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
3271 }
3272
3273 void
3274 xloadcols(void)
3275 {
3276 int i;
3277 static int loaded;
3278 Color *cp;
3279
3280 if (loaded) {
3281 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
3282 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
3283 }
3284
3285 for (i = 0; i < LEN(dc.col); i++)
3286 if (!xloadcolor(i, NULL, &dc.col[i])) {
3287 if (colorname[i])
3288 die("Could not allocate color '%s'\n", colorname[i]);
3289 else
3290 die("Could not allocate color %d\n", i);
3291 }
3292 loaded = 1;
3293 }
3294
3295 int
3296 xsetcolorname(int x, const char *name)
3297 {
3298 Color ncolor;
3299
3300 if (!BETWEEN(x, 0, LEN(dc.col)))
3301 return 1;
3302
3303
3304 if (!xloadcolor(x, name, &ncolor))
3305 return 1;
3306
3307 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
3308 dc.col[x] = ncolor;
3309
3310 return 0;
3311 }
3312
3313 /*
3314 * Absolute coordinates.
3315 */
3316 void
3317 xclear(int x1, int y1, int x2, int y2)
3318 {
3319 XftDrawRect(xw.draw,
3320 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
3321 x1, y1, x2-x1, y2-y1);
3322 }
3323
3324 void
3325 xhints(void)
3326 {
3327 XClassHint class = {opt_name ? opt_name : termname,
3328 opt_class ? opt_class : termname};
3329 XWMHints wm = {.flags = InputHint, .input = 1};
3330 XSizeHints *sizeh = NULL;
3331
3332 sizeh = XAllocSizeHints();
3333
3334 sizeh->flags = PSize | PResizeInc | PBaseSize;
3335 sizeh->height = xw.h;
3336 sizeh->width = xw.w;
3337 sizeh->height_inc = xw.ch;
3338 sizeh->width_inc = xw.cw;
3339 sizeh->base_height = 2 * borderpx;
3340 sizeh->base_width = 2 * borderpx;
3341 if (xw.isfixed) {
3342 sizeh->flags |= PMaxSize | PMinSize;
3343 sizeh->min_width = sizeh->max_width = xw.w;
3344 sizeh->min_height = sizeh->max_height = xw.h;
3345 }
3346 if (xw.gm & (XValue|YValue)) {
3347 sizeh->flags |= USPosition | PWinGravity;
3348 sizeh->x = xw.l;
3349 sizeh->y = xw.t;
3350 sizeh->win_gravity = xgeommasktogravity(xw.gm);
3351 }
3352
3353 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
3354 &class);
3355 XFree(sizeh);
3356 }
3357
3358 int
3359 xgeommasktogravity(int mask)
3360 {
3361 switch (mask & (XNegative|YNegative)) {
3362 case 0:
3363 return NorthWestGravity;
3364 case XNegative:
3365 return NorthEastGravity;
3366 case YNegative:
3367 return SouthWestGravity;
3368 }
3369
3370 return SouthEastGravity;
3371 }
3372
3373 int
3374 xloadfont(Font *f, FcPattern *pattern)
3375 {
3376 FcPattern *configured;
3377 FcPattern *match;
3378 FcResult result;
3379 XGlyphInfo extents;
3380 int wantattr, haveattr;
3381
3382 /*
3383 * Manually configure instead of calling XftMatchFont
3384 * so that we can use the configured pattern for
3385 * "missing glyph" lookups.
3386 */
3387 configured = FcPatternDuplicate(pattern);
3388 if (!configured)
3389 return 1;
3390
3391 FcConfigSubstitute(NULL, configured, FcMatchPattern);
3392 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
3393
3394 match = FcFontMatch(NULL, configured, &result);
3395 if (!match) {
3396 FcPatternDestroy(configured);
3397 return 1;
3398 }
3399
3400 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3401 FcPatternDestroy(configured);
3402 FcPatternDestroy(match);
3403 return 1;
3404 }
3405
3406 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
3407 XftResultMatch)) {
3408 /*
3409 * Check if xft was unable to find a font with the appropriate
3410 * slant but gave us one anyway. Try to mitigate.
3411 */
3412 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
3413 &haveattr) != XftResultMatch) || haveattr < wantattr) {
3414 f->badslant = 1;
3415 fputs("st: font slant does not match\n", stderr);
3416 }
3417 }
3418
3419 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
3420 XftResultMatch)) {
3421 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
3422 &haveattr) != XftResultMatch) || haveattr != wantattr) {
3423 f->badweight = 1;
3424 fputs("st: font weight does not match\n", stderr);
3425 }
3426 }
3427
3428 XftTextExtentsUtf8(xw.dpy, f->match,
3429 (const FcChar8 *) ascii_printable,
3430 strlen(ascii_printable), &extents);
3431
3432 f->set = NULL;
3433 f->pattern = configured;
3434
3435 f->ascent = f->match->ascent;
3436 f->descent = f->match->descent;
3437 f->lbearing = 0;
3438 f->rbearing = f->match->max_advance_width;
3439
3440 f->height = f->ascent + f->descent;
3441 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
3442
3443 return 0;
3444 }
3445
3446 void
3447 xloadfonts(char *fontstr, double fontsize)
3448 {
3449 FcPattern *pattern;
3450 double fontval;
3451 float ceilf(float);
3452
3453 if (fontstr[0] == '-') {
3454 pattern = XftXlfdParse(fontstr, False, False);
3455 } else {
3456 pattern = FcNameParse((FcChar8 *)fontstr);
3457 }
3458
3459 if (!pattern)
3460 die("st: can't open font %s\n", fontstr);
3461
3462 if (fontsize > 1) {
3463 FcPatternDel(pattern, FC_PIXEL_SIZE);
3464 FcPatternDel(pattern, FC_SIZE);
3465 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3466 usedfontsize = fontsize;
3467 } else {
3468 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
3469 FcResultMatch) {
3470 usedfontsize = fontval;
3471 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
3472 FcResultMatch) {
3473 usedfontsize = -1;
3474 } else {
3475 /*
3476 * Default font size is 12, if none given. This is to
3477 * have a known usedfontsize value.
3478 */
3479 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3480 usedfontsize = 12;
3481 }
3482 defaultfontsize = usedfontsize;
3483 }
3484
3485 if (xloadfont(&dc.font, pattern))
3486 die("st: can't open font %s\n", fontstr);
3487
3488 if (usedfontsize < 0) {
3489 FcPatternGetDouble(dc.font.match->pattern,
3490 FC_PIXEL_SIZE, 0, &fontval);
3491 usedfontsize = fontval;
3492 if (fontsize == 0)
3493 defaultfontsize = fontval;
3494 }
3495
3496 /* Setting character width and height. */
3497 xw.cw = ceilf(dc.font.width * cwscale);
3498 xw.ch = ceilf(dc.font.height * chscale);
3499
3500 FcPatternDel(pattern, FC_SLANT);
3501 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3502 if (xloadfont(&dc.ifont, pattern))
3503 die("st: can't open font %s\n", fontstr);
3504
3505 FcPatternDel(pattern, FC_WEIGHT);
3506 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3507 if (xloadfont(&dc.ibfont, pattern))
3508 die("st: can't open font %s\n", fontstr);
3509
3510 FcPatternDel(pattern, FC_SLANT);
3511 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3512 if (xloadfont(&dc.bfont, pattern))
3513 die("st: can't open font %s\n", fontstr);
3514
3515 FcPatternDestroy(pattern);
3516 }
3517
3518 void
3519 xunloadfont(Font *f)
3520 {
3521 XftFontClose(xw.dpy, f->match);
3522 FcPatternDestroy(f->pattern);
3523 if (f->set)
3524 FcFontSetDestroy(f->set);
3525 }
3526
3527 void
3528 xunloadfonts(void)
3529 {
3530 /* Free the loaded fonts in the font cache. */
3531 while (frclen > 0)
3532 XftFontClose(xw.dpy, frc[--frclen].font);
3533
3534 xunloadfont(&dc.font);
3535 xunloadfont(&dc.bfont);
3536 xunloadfont(&dc.ifont);
3537 xunloadfont(&dc.ibfont);
3538 }
3539
3540 void
3541 xzoom(const Arg *arg)
3542 {
3543 Arg larg;
3544
3545 larg.f = usedfontsize + arg->f;
3546 xzoomabs(&larg);
3547 }
3548
3549 void
3550 xzoomabs(const Arg *arg)
3551 {
3552 xunloadfonts();
3553 xloadfonts(usedfont, arg->f);
3554 cresize(0, 0);
3555 ttyresize();
3556 redraw();
3557 xhints();
3558 }
3559
3560 void
3561 xzoomreset(const Arg *arg)
3562 {
3563 Arg larg;
3564
3565 if (defaultfontsize > 0) {
3566 larg.f = defaultfontsize;
3567 xzoomabs(&larg);
3568 }
3569 }
3570
3571 void
3572 xinit(void)
3573 {
3574 XGCValues gcvalues;
3575 Cursor cursor;
3576 Window parent;
3577 pid_t thispid = getpid();
3578 XColor xmousefg, xmousebg;
3579
3580 if (!(xw.dpy = XOpenDisplay(NULL)))
3581 die("Can't open display\n");
3582 xw.scr = XDefaultScreen(xw.dpy);
3583 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3584
3585 /* font */
3586 if (!FcInit())
3587 die("Could not init fontconfig.\n");
3588
3589 usedfont = (opt_font == NULL)? font : opt_font;
3590 xloadfonts(usedfont, 0);
3591
3592 /* colors */
3593 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3594 xloadcols();
3595
3596 /* adjust fixed window geometry */
3597 xw.w = 2 * borderpx + term.col * xw.cw;
3598 xw.h = 2 * borderpx + term.row * xw.ch;
3599 if (xw.gm & XNegative)
3600 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3601 if (xw.gm & YNegative)
3602 xw.t += DisplayHeight(xw.dpy, xw.scr) - xw.h - 2;
3603
3604 /* Events */
3605 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3606 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3607 xw.attrs.bit_gravity = NorthWestGravity;
3608 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3609 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3610 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3611 xw.attrs.colormap = xw.cmap;
3612
3613 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
3614 parent = XRootWindow(xw.dpy, xw.scr);
3615 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3616 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3617 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3618 | CWEventMask | CWColormap, &xw.attrs);
3619
3620 memset(&gcvalues, 0, sizeof(gcvalues));
3621 gcvalues.graphics_exposures = False;
3622 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3623 &gcvalues);
3624 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3625 DefaultDepth(xw.dpy, xw.scr));
3626 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3627 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3628
3629 /* Xft rendering context */
3630 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3631
3632 /* input methods */
3633 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3634 XSetLocaleModifiers("@im=local");
3635 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3636 XSetLocaleModifiers("@im=");
3637 if ((xw.xim = XOpenIM(xw.dpy,
3638 NULL, NULL, NULL)) == NULL) {
3639 die("XOpenIM failed. Could not open input"
3640 " device.\n");
3641 }
3642 }
3643 }
3644 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3645 | XIMStatusNothing, XNClientWindow, xw.win,
3646 XNFocusWindow, xw.win, NULL);
3647 if (xw.xic == NULL)
3648 die("XCreateIC failed. Could not obtain input method.\n");
3649
3650 /* white cursor, black outline */
3651 cursor = XCreateFontCursor(xw.dpy, mouseshape);
3652 XDefineCursor(xw.dpy, xw.win, cursor);
3653
3654 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
3655 xmousefg.red = 0xffff;
3656 xmousefg.green = 0xffff;
3657 xmousefg.blue = 0xffff;
3658 }
3659
3660 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
3661 xmousebg.red = 0x0000;
3662 xmousebg.green = 0x0000;
3663 xmousebg.blue = 0x0000;
3664 }
3665
3666 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
3667
3668 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3669 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3670 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3671 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3672
3673 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3674 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3675 PropModeReplace, (uchar *)&thispid, 1);
3676
3677 xresettitle();
3678 XMapWindow(xw.dpy, xw.win);
3679 xhints();
3680 XSync(xw.dpy, False);
3681 }
3682
3683 int
3684 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
3685 {
3686 float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
3687 ushort mode, prevmode = USHRT_MAX;
3688 Font *font = &dc.font;
3689 int frcflags = FRC_NORMAL;
3690 float runewidth = xw.cw;
3691 Rune rune;
3692 FT_UInt glyphidx;
3693 FcResult fcres;
3694 FcPattern *fcpattern, *fontpattern;
3695 FcFontSet *fcsets[] = { NULL };
3696 FcCharSet *fccharset;
3697 int i, f, numspecs = 0;
3698
3699 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
3700 /* Fetch rune and mode for current glyph. */
3701 rune = glyphs[i].u;
3702 mode = glyphs[i].mode;
3703
3704 /* Skip dummy wide-character spacing. */
3705 if (mode == ATTR_WDUMMY)
3706 continue;
3707
3708 /* Determine font for glyph if different from previous glyph. */
3709 if (prevmode != mode) {
3710 prevmode = mode;
3711 font = &dc.font;
3712 frcflags = FRC_NORMAL;
3713 runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
3714 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
3715 font = &dc.ibfont;
3716 frcflags = FRC_ITALICBOLD;
3717 } else if (mode & ATTR_ITALIC) {
3718 font = &dc.ifont;
3719 frcflags = FRC_ITALIC;
3720 } else if (mode & ATTR_BOLD) {
3721 font = &dc.bfont;
3722 frcflags = FRC_BOLD;
3723 }
3724 yp = winy + font->ascent;
3725 }
3726
3727 /* Lookup character index with default font. */
3728 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
3729 if (glyphidx) {
3730 specs[numspecs].font = font->match;
3731 specs[numspecs].glyph = glyphidx;
3732 specs[numspecs].x = (short)xp;
3733 specs[numspecs].y = (short)yp;
3734 xp += runewidth;
3735 numspecs++;
3736 continue;
3737 }
3738
3739 /* Fallback on font cache, search the font cache for match. */
3740 for (f = 0; f < frclen; f++) {
3741 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
3742 /* Everything correct. */
3743 if (glyphidx && frc[f].flags == frcflags)
3744 break;
3745 /* We got a default font for a not found glyph. */
3746 if (!glyphidx && frc[f].flags == frcflags
3747 && frc[f].unicodep == rune) {
3748 break;
3749 }
3750 }
3751
3752 /* Nothing was found. Use fontconfig to find matching font. */
3753 if (f >= frclen) {
3754 if (!font->set)
3755 font->set = FcFontSort(0, font->pattern,
3756 1, 0, &fcres);
3757 fcsets[0] = font->set;
3758
3759 /*
3760 * Nothing was found in the cache. Now use
3761 * some dozen of Fontconfig calls to get the
3762 * font for one single character.
3763 *
3764 * Xft and fontconfig are design failures.
3765 */
3766 fcpattern = FcPatternDuplicate(font->pattern);
3767 fccharset = FcCharSetCreate();
3768
3769 FcCharSetAddChar(fccharset, rune);
3770 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3771 fccharset);
3772 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
3773
3774 FcConfigSubstitute(0, fcpattern,
3775 FcMatchPattern);
3776 FcDefaultSubstitute(fcpattern);
3777
3778 fontpattern = FcFontSetMatch(0, fcsets, 1,
3779 fcpattern, &fcres);
3780
3781 /*
3782 * Overwrite or create the new cache entry.
3783 */
3784 if (frclen >= LEN(frc)) {
3785 frclen = LEN(frc) - 1;
3786 XftFontClose(xw.dpy, frc[frclen].font);
3787 frc[frclen].unicodep = 0;
3788 }
3789
3790 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3791 fontpattern);
3792 frc[frclen].flags = frcflags;
3793 frc[frclen].unicodep = rune;
3794
3795 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
3796
3797 f = frclen;
3798 frclen++;
3799
3800 FcPatternDestroy(fcpattern);
3801 FcCharSetDestroy(fccharset);
3802 }
3803
3804 specs[numspecs].font = frc[f].font;
3805 specs[numspecs].glyph = glyphidx;
3806 specs[numspecs].x = (short)xp;
3807 specs[numspecs].y = (short)yp;
3808 xp += runewidth;
3809 numspecs++;
3810 }
3811
3812 return numspecs;
3813 }
3814
3815 void
3816 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
3817 {
3818 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
3819 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3820 width = charlen * xw.cw;
3821 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3822 XRenderColor colfg, colbg;
3823 XRectangle r;
3824
3825 /* Fallback on color display for attributes not supported by the font */
3826 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
3827 if (dc.ibfont.badslant || dc.ibfont.badweight)
3828 base.fg = defaultattr;
3829 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
3830 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
3831 base.fg = defaultattr;
3832 }
3833
3834 if (IS_TRUECOL(base.fg)) {
3835 colfg.alpha = 0xffff;
3836 colfg.red = TRUERED(base.fg);
3837 colfg.green = TRUEGREEN(base.fg);
3838 colfg.blue = TRUEBLUE(base.fg);
3839 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3840 fg = &truefg;
3841 } else {
3842 fg = &dc.col[base.fg];
3843 }
3844
3845 if (IS_TRUECOL(base.bg)) {
3846 colbg.alpha = 0xffff;
3847 colbg.green = TRUEGREEN(base.bg);
3848 colbg.red = TRUERED(base.bg);
3849 colbg.blue = TRUEBLUE(base.bg);
3850 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3851 bg = &truebg;
3852 } else {
3853 bg = &dc.col[base.bg];
3854 }
3855
3856 /* Change basic system colors [0-7] to bright system colors [8-15] */
3857 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
3858 fg = &dc.col[base.fg + 8];
3859
3860 if (IS_SET(MODE_REVERSE)) {
3861 if (fg == &dc.col[defaultfg]) {
3862 fg = &dc.col[defaultbg];
3863 } else {
3864 colfg.red = ~fg->color.red;
3865 colfg.green = ~fg->color.green;
3866 colfg.blue = ~fg->color.blue;
3867 colfg.alpha = fg->color.alpha;
3868 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3869 &revfg);
3870 fg = &revfg;
3871 }
3872
3873 if (bg == &dc.col[defaultbg]) {
3874 bg = &dc.col[defaultfg];
3875 } else {
3876 colbg.red = ~bg->color.red;
3877 colbg.green = ~bg->color.green;
3878 colbg.blue = ~bg->color.blue;
3879 colbg.alpha = bg->color.alpha;
3880 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3881 &revbg);
3882 bg = &revbg;
3883 }
3884 }
3885
3886 if (base.mode & ATTR_REVERSE) {
3887 temp = fg;
3888 fg = bg;
3889 bg = temp;
3890 }
3891
3892 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
3893 colfg.red = fg->color.red / 2;
3894 colfg.green = fg->color.green / 2;
3895 colfg.blue = fg->color.blue / 2;
3896 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3897 fg = &revfg;
3898 }
3899
3900 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3901 fg = bg;
3902
3903 if (base.mode & ATTR_INVISIBLE)
3904 fg = bg;
3905
3906 /* Intelligent cleaning up of the borders. */
3907 if (x == 0) {
3908 xclear(0, (y == 0)? 0 : winy, borderpx,
3909 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3910 }
3911 if (x + charlen >= term.col) {
3912 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3913 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3914 }
3915 if (y == 0)
3916 xclear(winx, 0, winx + width, borderpx);
3917 if (y == term.row-1)
3918 xclear(winx, winy + xw.ch, winx + width, xw.h);
3919
3920 /* Clean up the region we want to draw to. */
3921 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3922
3923 /* Set the clip region because Xft is sometimes dirty. */
3924 r.x = 0;
3925 r.y = 0;
3926 r.height = xw.ch;
3927 r.width = width;
3928 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3929
3930 /* Render the glyphs. */
3931 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
3932
3933 /* Render underline and strikethrough. */
3934 if (base.mode & ATTR_UNDERLINE) {
3935 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
3936 width, 1);
3937 }
3938
3939 if (base.mode & ATTR_STRUCK) {
3940 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
3941 width, 1);
3942 }
3943
3944 /* Reset clip to none. */
3945 XftDrawSetClip(xw.draw, 0);
3946 }
3947
3948 void
3949 xdrawglyph(Glyph g, int x, int y)
3950 {
3951 int numspecs;
3952 XftGlyphFontSpec spec;
3953
3954 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
3955 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
3956 }
3957
3958 void
3959 xdrawcursor(void)
3960 {
3961 static int oldx = 0, oldy = 0;
3962 int curx;
3963 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
3964 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3965 Color drawcol;
3966
3967 LIMIT(oldx, 0, term.col-1);
3968 LIMIT(oldy, 0, term.row-1);
3969
3970 curx = term.c.x;
3971
3972 /* adjust position if in dummy */
3973 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
3974 oldx--;
3975 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3976 curx--;
3977
3978 /* remove the old cursor */
3979 og = term.line[oldy][oldx];
3980 if (ena_sel && selected(oldx, oldy))
3981 og.mode ^= ATTR_REVERSE;
3982 xdrawglyph(og, oldx, oldy);
3983
3984 g.u = term.line[term.c.y][term.c.x].u;
3985
3986 /*
3987 * Select the right color for the right mode.
3988 */
3989 if (IS_SET(MODE_REVERSE)) {
3990 g.mode |= ATTR_REVERSE;
3991 g.bg = defaultfg;
3992 if (ena_sel && selected(term.c.x, term.c.y)) {
3993 drawcol = dc.col[defaultcs];
3994 g.fg = defaultrcs;
3995 } else {
3996 drawcol = dc.col[defaultrcs];
3997 g.fg = defaultcs;
3998 }
3999 } else {
4000 if (ena_sel && selected(term.c.x, term.c.y)) {
4001 drawcol = dc.col[defaultrcs];
4002 g.fg = defaultfg;
4003 g.bg = defaultrcs;
4004 } else {
4005 drawcol = dc.col[defaultcs];
4006 }
4007 }
4008
4009 if (IS_SET(MODE_HIDE))
4010 return;
4011
4012 /* draw the new one */
4013 if (xw.state & WIN_FOCUSED) {
4014 switch (xw.cursor) {
4015 case 7: /* st extension: snowman */
4016 utf8decode("☃", &g.u, UTF_SIZ);
4017 case 0: /* Blinking Block */
4018 case 1: /* Blinking Block (Default) */
4019 case 2: /* Steady Block */
4020 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
4021 xdrawglyph(g, term.c.x, term.c.y);
4022 break;
4023 case 3: /* Blinking Underline */
4024 case 4: /* Steady Underline */
4025 XftDrawRect(xw.draw, &drawcol,
4026 borderpx + curx * xw.cw,
4027 borderpx + (term.c.y + 1) * xw.ch - \
4028 cursorthickness,
4029 xw.cw, cursorthickness);
4030 break;
4031 case 5: /* Blinking bar */
4032 case 6: /* Steady bar */
4033 XftDrawRect(xw.draw, &drawcol,
4034 borderpx + curx * xw.cw,
4035 borderpx + term.c.y * xw.ch,
4036 cursorthickness, xw.ch);
4037 break;
4038 }
4039 } else {
4040 XftDrawRect(xw.draw, &drawcol,
4041 borderpx + curx * xw.cw,
4042 borderpx + term.c.y * xw.ch,
4043 xw.cw - 1, 1);
4044 XftDrawRect(xw.draw, &drawcol,
4045 borderpx + curx * xw.cw,
4046 borderpx + term.c.y * xw.ch,
4047 1, xw.ch - 1);
4048 XftDrawRect(xw.draw, &drawcol,
4049 borderpx + (curx + 1) * xw.cw - 1,
4050 borderpx + term.c.y * xw.ch,
4051 1, xw.ch - 1);
4052 XftDrawRect(xw.draw, &drawcol,
4053 borderpx + curx * xw.cw,
4054 borderpx + (term.c.y + 1) * xw.ch - 1,
4055 xw.cw, 1);
4056 }
4057 oldx = curx, oldy = term.c.y;
4058 }
4059
4060
4061 void
4062 xsettitle(char *p)
4063 {
4064 XTextProperty prop;
4065
4066 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
4067 &prop);
4068 XSetWMName(xw.dpy, xw.win, &prop);
4069 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
4070 XFree(prop.value);
4071 }
4072
4073 void
4074 xresettitle(void)
4075 {
4076 xsettitle(opt_title ? opt_title : "st");
4077 }
4078
4079 void
4080 redraw(void)
4081 {
4082 tfulldirt();
4083 draw();
4084 }
4085
4086 void
4087 draw(void)
4088 {
4089 drawregion(0, 0, term.col, term.row);
4090 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
4091 xw.h, 0, 0);
4092 XSetForeground(xw.dpy, dc.gc,
4093 dc.col[IS_SET(MODE_REVERSE)?
4094 defaultfg : defaultbg].pixel);
4095 }
4096
4097 void
4098 drawregion(int x1, int y1, int x2, int y2)
4099 {
4100 int i, x, y, ox, numspecs;
4101 Glyph base, new;
4102 XftGlyphFontSpec *specs;
4103 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
4104
4105 if (!(xw.state & WIN_VISIBLE))
4106 return;
4107
4108 for (y = y1; y < y2; y++) {
4109 if (!term.dirty[y])
4110 continue;
4111
4112 term.dirty[y] = 0;
4113
4114 specs = term.specbuf;
4115 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
4116
4117 i = ox = 0;
4118 for (x = x1; x < x2 && i < numspecs; x++) {
4119 new = term.line[y][x];
4120 if (new.mode == ATTR_WDUMMY)
4121 continue;
4122 if (ena_sel && selected(x, y))
4123 new.mode ^= ATTR_REVERSE;
4124 if (i > 0 && ATTRCMP(base, new)) {
4125 xdrawglyphfontspecs(specs, base, i, ox, y);
4126 specs += i;
4127 numspecs -= i;
4128 i = 0;
4129 }
4130 if (i == 0) {
4131 ox = x;
4132 base = new;
4133 }
4134 i++;
4135 }
4136 if (i > 0)
4137 xdrawglyphfontspecs(specs, base, i, ox, y);
4138 }
4139 xdrawcursor();
4140 }
4141
4142 void
4143 expose(XEvent *ev)
4144 {
4145 redraw();
4146 }
4147
4148 void
4149 visibility(XEvent *ev)
4150 {
4151 XVisibilityEvent *e = &ev->xvisibility;
4152
4153 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
4154 }
4155
4156 void
4157 unmap(XEvent *ev)
4158 {
4159 xw.state &= ~WIN_VISIBLE;
4160 }
4161
4162 void
4163 xsetpointermotion(int set)
4164 {
4165 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
4166 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
4167 }
4168
4169 void
4170 xseturgency(int add)
4171 {
4172 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
4173
4174 MODBIT(h->flags, add, XUrgencyHint);
4175 XSetWMHints(xw.dpy, xw.win, h);
4176 XFree(h);
4177 }
4178
4179 void
4180 focus(XEvent *ev)
4181 {
4182 XFocusChangeEvent *e = &ev->xfocus;
4183
4184 if (e->mode == NotifyGrab)
4185 return;
4186
4187 if (ev->type == FocusIn) {
4188 XSetICFocus(xw.xic);
4189 xw.state |= WIN_FOCUSED;
4190 xseturgency(0);
4191 if (IS_SET(MODE_FOCUS))
4192 ttywrite("\033[I", 3);
4193 } else {
4194 XUnsetICFocus(xw.xic);
4195 xw.state &= ~WIN_FOCUSED;
4196 if (IS_SET(MODE_FOCUS))
4197 ttywrite("\033[O", 3);
4198 }
4199 }
4200
4201 int
4202 match(uint mask, uint state)
4203 {
4204 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
4205 }
4206
4207 void
4208 numlock(const Arg *dummy)
4209 {
4210 term.numlock ^= 1;
4211 }
4212
4213 char*
4214 kmap(KeySym k, uint state)
4215 {
4216 Key *kp;
4217 int i;
4218
4219 /* Check for mapped keys out of X11 function keys. */
4220 for (i = 0; i < LEN(mappedkeys); i++) {
4221 if (mappedkeys[i] == k)
4222 break;
4223 }
4224 if (i == LEN(mappedkeys)) {
4225 if ((k & 0xFFFF) < 0xFD00)
4226 return NULL;
4227 }
4228
4229 for (kp = key; kp < key + LEN(key); kp++) {
4230 if (kp->k != k)
4231 continue;
4232
4233 if (!match(kp->mask, state))
4234 continue;
4235
4236 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
4237 continue;
4238 if (term.numlock && kp->appkey == 2)
4239 continue;
4240
4241 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
4242 continue;
4243
4244 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
4245 continue;
4246
4247 return kp->s;
4248 }
4249
4250 return NULL;
4251 }
4252
4253 void
4254 kpress(XEvent *ev)
4255 {
4256 XKeyEvent *e = &ev->xkey;
4257 KeySym ksym;
4258 char buf[32], *customkey;
4259 int len;
4260 Rune c;
4261 Status status;
4262 Shortcut *bp;
4263
4264 if (IS_SET(MODE_KBDLOCK))
4265 return;
4266
4267 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
4268 /* 1. shortcuts */
4269 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
4270 if (ksym == bp->keysym && match(bp->mod, e->state)) {
4271 bp->func(&(bp->arg));
4272 return;
4273 }
4274 }
4275
4276 /* 2. custom keys from config.h */
4277 if ((customkey = kmap(ksym, e->state))) {
4278 ttysend(customkey, strlen(customkey));
4279 return;
4280 }
4281
4282 /* 3. composed string from input method */
4283 if (len == 0)
4284 return;
4285 if (len == 1 && e->state & Mod1Mask) {
4286 if (IS_SET(MODE_8BIT)) {
4287 if (*buf < 0177) {
4288 c = *buf | 0x80;
4289 len = utf8encode(c, buf);
4290 }
4291 } else {
4292 buf[1] = buf[0];
4293 buf[0] = '\033';
4294 len = 2;
4295 }
4296 }
4297 ttysend(buf, len);
4298 }
4299
4300
4301 void
4302 cmessage(XEvent *e)
4303 {
4304 /*
4305 * See xembed specs
4306 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
4307 */
4308 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
4309 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
4310 xw.state |= WIN_FOCUSED;
4311 xseturgency(0);
4312 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
4313 xw.state &= ~WIN_FOCUSED;
4314 }
4315 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
4316 /* Send SIGHUP to shell */
4317 kill(pid, SIGHUP);
4318 exit(0);
4319 }
4320 }
4321
4322 void
4323 cresize(int width, int height)
4324 {
4325 int col, row;
4326
4327 if (width != 0)
4328 xw.w = width;
4329 if (height != 0)
4330 xw.h = height;
4331
4332 col = (xw.w - 2 * borderpx) / xw.cw;
4333 row = (xw.h - 2 * borderpx) / xw.ch;
4334
4335 tresize(col, row);
4336 xresize(col, row);
4337 }
4338
4339 void
4340 resize(XEvent *e)
4341 {
4342 if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
4343 return;
4344
4345 cresize(e->xconfigure.width, e->xconfigure.height);
4346 ttyresize();
4347 }
4348
4349 void
4350 run(void)
4351 {
4352 XEvent ev;
4353 int w = xw.w, h = xw.h;
4354 fd_set rfd;
4355 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
4356 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
4357 long deltatime;
4358
4359 /* Waiting for window mapping */
4360 do {
4361 XNextEvent(xw.dpy, &ev);
4362 /*
4363 * This XFilterEvent call is required because of XOpenIM. It
4364 * does filter out the key event and some client message for
4365 * the input method too.
4366 */
4367 if (XFilterEvent(&ev, None))
4368 continue;
4369 if (ev.type == ConfigureNotify) {
4370 w = ev.xconfigure.width;
4371 h = ev.xconfigure.height;
4372 }
4373 } while (ev.type != MapNotify);
4374
4375 cresize(w, h);
4376 ttynew();
4377 ttyresize();
4378
4379 clock_gettime(CLOCK_MONOTONIC, &last);
4380 lastblink = last;
4381
4382 for (xev = actionfps;;) {
4383 FD_ZERO(&rfd);
4384 FD_SET(cmdfd, &rfd);
4385 FD_SET(xfd, &rfd);
4386
4387 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
4388 if (errno == EINTR)
4389 continue;
4390 die("select failed: %s\n", strerror(errno));
4391 }
4392 if (FD_ISSET(cmdfd, &rfd)) {
4393 ttyread();
4394 if (blinktimeout) {
4395 blinkset = tattrset(ATTR_BLINK);
4396 if (!blinkset)
4397 MODBIT(term.mode, 0, MODE_BLINK);
4398 }
4399 }
4400
4401 if (FD_ISSET(xfd, &rfd))
4402 xev = actionfps;
4403
4404 clock_gettime(CLOCK_MONOTONIC, &now);
4405 drawtimeout.tv_sec = 0;
4406 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
4407 tv = &drawtimeout;
4408
4409 dodraw = 0;
4410 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
4411 tsetdirtattr(ATTR_BLINK);
4412 term.mode ^= MODE_BLINK;
4413 lastblink = now;
4414 dodraw = 1;
4415 }
4416 deltatime = TIMEDIFF(now, last);
4417 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
4418 dodraw = 1;
4419 last = now;
4420 }
4421
4422 if (dodraw) {
4423 while (XPending(xw.dpy)) {
4424 XNextEvent(xw.dpy, &ev);
4425 if (XFilterEvent(&ev, None))
4426 continue;
4427 if (handler[ev.type])
4428 (handler[ev.type])(&ev);
4429 }
4430
4431 draw();
4432 XFlush(xw.dpy);
4433
4434 if (xev && !FD_ISSET(xfd, &rfd))
4435 xev--;
4436 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
4437 if (blinkset) {
4438 if (TIMEDIFF(now, lastblink) \
4439 > blinktimeout) {
4440 drawtimeout.tv_nsec = 1000;
4441 } else {
4442 drawtimeout.tv_nsec = (1E6 * \
4443 (blinktimeout - \
4444 TIMEDIFF(now,
4445 lastblink)));
4446 }
4447 drawtimeout.tv_sec = \
4448 drawtimeout.tv_nsec / 1E9;
4449 drawtimeout.tv_nsec %= (long)1E9;
4450 } else {
4451 tv = NULL;
4452 }
4453 }
4454 }
4455 }
4456 }
4457
4458 void
4459 usage(void)
4460 {
4461 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
4462 " [-n name] [-o file]\n"
4463 " [-T title] [-t title] [-w windowid]"
4464 " [[-e] command [args ...]]\n"
4465 " %s [-aiv] [-c class] [-f font] [-g geometry]"
4466 " [-n name] [-o file]\n"
4467 " [-T title] [-t title] [-w windowid] -l line"
4468 " [stty_args ...]\n", argv0, argv0);
4469 }
4470
4471 int
4472 main(int argc, char *argv[])
4473 {
4474 uint cols = 80, rows = 24;
4475
4476 xw.l = xw.t = 0;
4477 xw.isfixed = False;
4478 xw.cursor = cursorshape;
4479
4480 ARGBEGIN {
4481 case 'a':
4482 allowaltscreen = 0;
4483 break;
4484 case 'c':
4485 opt_class = EARGF(usage());
4486 break;
4487 case 'e':
4488 if (argc > 0)
4489 --argc, ++argv;
4490 goto run;
4491 case 'f':
4492 opt_font = EARGF(usage());
4493 break;
4494 case 'g':
4495 xw.gm = XParseGeometry(EARGF(usage()),
4496 &xw.l, &xw.t, &cols, &rows);
4497 break;
4498 case 'i':
4499 xw.isfixed = 1;
4500 break;
4501 case 'o':
4502 opt_io = EARGF(usage());
4503 break;
4504 case 'l':
4505 opt_line = EARGF(usage());
4506 break;
4507 case 'n':
4508 opt_name = EARGF(usage());
4509 break;
4510 case 't':
4511 case 'T':
4512 opt_title = EARGF(usage());
4513 break;
4514 case 'w':
4515 opt_embed = EARGF(usage());
4516 break;
4517 case 'v':
4518 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
4519 break;
4520 default:
4521 usage();
4522 } ARGEND;
4523
4524 run:
4525 if (argc > 0) {
4526 /* eat all remaining arguments */
4527 opt_cmd = argv;
4528 if (!opt_title && !opt_line)
4529 opt_title = basename(xstrdup(argv[0]));
4530 }
4531 setlocale(LC_CTYPE, "");
4532 XSetLocaleModifiers("");
4533 tnew(MAX(cols, 1), MAX(rows, 1));
4534 xinit();
4535 selinit();
4536 run();
4537
4538 return 0;
4539 }
4540