st.c - st - Simple Terminal
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st.c (100946B)
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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 static void externalpipe(const Arg *);
348
349 /* Config.h for applying patches and the configuration. */
350 #include "config.h"
351
352 /* Font structure */
353 typedef struct {
354 int height;
355 int width;
356 int ascent;
357 int descent;
358 int badslant;
359 int badweight;
360 short lbearing;
361 short rbearing;
362 XftFont *match;
363 FcFontSet *set;
364 FcPattern *pattern;
365 } Font;
366
367 /* Drawing Context */
368 typedef struct {
369 Color col[MAX(LEN(colorname), 256)];
370 Font font, bfont, ifont, ibfont;
371 GC gc;
372 } DC;
373
374 static void die(const char *, ...);
375 static void draw(void);
376 static void redraw(void);
377 static void drawregion(int, int, int, int);
378 static void execsh(void);
379 static void stty(void);
380 static void sigchld(int);
381 static void run(void);
382
383 static void csidump(void);
384 static void csihandle(void);
385 static void csiparse(void);
386 static void csireset(void);
387 static int eschandle(uchar);
388 static void strdump(void);
389 static void strhandle(void);
390 static void strparse(void);
391 static void strreset(void);
392
393 static int tattrset(int);
394 static void tprinter(char *, size_t);
395 static void tdumpsel(void);
396 static void tdumpline(int);
397 static void tdump(void);
398 static void tclearregion(int, int, int, int);
399 static void tcursor(int);
400 static void tdeletechar(int);
401 static void tdeleteline(int);
402 static void tinsertblank(int);
403 static void tinsertblankline(int);
404 static int tlinelen(int);
405 static void tmoveto(int, int);
406 static void tmoveato(int, int);
407 static void tnew(int, int);
408 static void tnewline(int);
409 static void tputtab(int);
410 static void tputc(Rune);
411 static void treset(void);
412 static void tresize(int, int);
413 static void tscrollup(int, int);
414 static void tscrolldown(int, int);
415 static void tsetattr(int *, int);
416 static void tsetchar(Rune, Glyph *, int, int);
417 static void tsetscroll(int, int);
418 static void tswapscreen(void);
419 static void tsetdirt(int, int);
420 static void tsetdirtattr(int);
421 static void tsetmode(int, int, int *, int);
422 static void tfulldirt(void);
423 static void techo(Rune);
424 static void tcontrolcode(uchar );
425 static void tdectest(char );
426 static void tdefutf8(char);
427 static int32_t tdefcolor(int *, int *, int);
428 static void tdeftran(char);
429 static inline int match(uint, uint);
430 static void ttynew(void);
431 static size_t ttyread(void);
432 static void ttyresize(void);
433 static void ttysend(char *, size_t);
434 static void ttywrite(const char *, size_t);
435 static void tstrsequence(uchar);
436
437 static inline ushort sixd_to_16bit(int);
438 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
439 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
440 static void xdrawglyph(Glyph, int, int);
441 static void xhints(void);
442 static void xclear(int, int, int, int);
443 static void xdrawcursor(void);
444 static void xinit(void);
445 static void xloadcols(void);
446 static int xsetcolorname(int, const char *);
447 static int xgeommasktogravity(int);
448 static int xloadfont(Font *, FcPattern *);
449 static void xloadfonts(char *, double);
450 static void xsettitle(char *);
451 static void xresettitle(void);
452 static void xsetpointermotion(int);
453 static void xseturgency(int);
454 static void xsetsel(char *, Time);
455 static void xunloadfont(Font *);
456 static void xunloadfonts(void);
457 static void xresize(int, int);
458
459 static void expose(XEvent *);
460 static void visibility(XEvent *);
461 static void unmap(XEvent *);
462 static char *kmap(KeySym, uint);
463 static void kpress(XEvent *);
464 static void cmessage(XEvent *);
465 static void cresize(int, int);
466 static void resize(XEvent *);
467 static void focus(XEvent *);
468 static void brelease(XEvent *);
469 static void bpress(XEvent *);
470 static void bmotion(XEvent *);
471 static void propnotify(XEvent *);
472 static void selnotify(XEvent *);
473 static void selclear(XEvent *);
474 static void selrequest(XEvent *);
475
476 static void selinit(void);
477 static void selnormalize(void);
478 static inline int selected(int, int);
479 static char *getsel(void);
480 static void selcopy(Time);
481 static void selscroll(int, int);
482 static void selsnap(int *, int *, int);
483 static int x2col(int);
484 static int y2row(int);
485 static void getbuttoninfo(XEvent *);
486 static void mousereport(XEvent *);
487
488 static size_t utf8decode(char *, Rune *, size_t);
489 static Rune utf8decodebyte(char, size_t *);
490 static size_t utf8encode(Rune, char *);
491 static char utf8encodebyte(Rune, size_t);
492 static char *utf8strchr(char *s, Rune u);
493 static size_t utf8validate(Rune *, size_t);
494
495 static ssize_t xwrite(int, const char *, size_t);
496 static void *xmalloc(size_t);
497 static void *xrealloc(void *, size_t);
498 static char *xstrdup(char *);
499
500 static void usage(void);
501
502 static void (*handler[LASTEvent])(XEvent *) = {
503 [KeyPress] = kpress,
504 [ClientMessage] = cmessage,
505 [ConfigureNotify] = resize,
506 [VisibilityNotify] = visibility,
507 [UnmapNotify] = unmap,
508 [Expose] = expose,
509 [FocusIn] = focus,
510 [FocusOut] = focus,
511 [MotionNotify] = bmotion,
512 [ButtonPress] = bpress,
513 [ButtonRelease] = brelease,
514 /*
515 * Uncomment if you want the selection to disappear when you select something
516 * different in another window.
517 */
518 /* [SelectionClear] = selclear, */
519 [SelectionNotify] = selnotify,
520 /*
521 * PropertyNotify is only turned on when there is some INCR transfer happening
522 * for the selection retrieval.
523 */
524 [PropertyNotify] = propnotify,
525 [SelectionRequest] = selrequest,
526 };
527
528 /* Globals */
529 static DC dc;
530 static XWindow xw;
531 static Term term;
532 static CSIEscape csiescseq;
533 static STREscape strescseq;
534 static int cmdfd;
535 static pid_t pid;
536 static Selection sel;
537 static int iofd = 1;
538 static char **opt_cmd = NULL;
539 static char *opt_class = NULL;
540 static char *opt_embed = NULL;
541 static char *opt_font = NULL;
542 static char *opt_io = NULL;
543 static char *opt_line = NULL;
544 static char *opt_name = NULL;
545 static char *opt_title = NULL;
546 static int oldbutton = 3; /* button event on startup: 3 = release */
547
548 static char *usedfont = NULL;
549 static double usedfontsize = 0;
550 static double defaultfontsize = 0;
551
552 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
553 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
554 static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
555 static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
556
557 /* Font Ring Cache */
558 enum {
559 FRC_NORMAL,
560 FRC_ITALIC,
561 FRC_BOLD,
562 FRC_ITALICBOLD
563 };
564
565 typedef struct {
566 XftFont *font;
567 int flags;
568 Rune unicodep;
569 } Fontcache;
570
571 /* Fontcache is an array now. A new font will be appended to the array. */
572 static Fontcache frc[16];
573 static int frclen = 0;
574
575 ssize_t
576 xwrite(int fd, const char *s, size_t len)
577 {
578 size_t aux = len;
579 ssize_t r;
580
581 while (len > 0) {
582 r = write(fd, s, len);
583 if (r < 0)
584 return r;
585 len -= r;
586 s += r;
587 }
588
589 return aux;
590 }
591
592 void *
593 xmalloc(size_t len)
594 {
595 void *p = malloc(len);
596
597 if (!p)
598 die("Out of memory\n");
599
600 return p;
601 }
602
603 void *
604 xrealloc(void *p, size_t len)
605 {
606 if ((p = realloc(p, len)) == NULL)
607 die("Out of memory\n");
608
609 return p;
610 }
611
612 char *
613 xstrdup(char *s)
614 {
615 if ((s = strdup(s)) == NULL)
616 die("Out of memory\n");
617
618 return s;
619 }
620
621 size_t
622 utf8decode(char *c, Rune *u, size_t clen)
623 {
624 size_t i, j, len, type;
625 Rune udecoded;
626
627 *u = UTF_INVALID;
628 if (!clen)
629 return 0;
630 udecoded = utf8decodebyte(c[0], &len);
631 if (!BETWEEN(len, 1, UTF_SIZ))
632 return 1;
633 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
634 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
635 if (type != 0)
636 return j;
637 }
638 if (j < len)
639 return 0;
640 *u = udecoded;
641 utf8validate(u, len);
642
643 return len;
644 }
645
646 Rune
647 utf8decodebyte(char c, size_t *i)
648 {
649 for (*i = 0; *i < LEN(utfmask); ++(*i))
650 if (((uchar)c & utfmask[*i]) == utfbyte[*i])
651 return (uchar)c & ~utfmask[*i];
652
653 return 0;
654 }
655
656 size_t
657 utf8encode(Rune u, char *c)
658 {
659 size_t len, i;
660
661 len = utf8validate(&u, 0);
662 if (len > UTF_SIZ)
663 return 0;
664
665 for (i = len - 1; i != 0; --i) {
666 c[i] = utf8encodebyte(u, 0);
667 u >>= 6;
668 }
669 c[0] = utf8encodebyte(u, len);
670
671 return len;
672 }
673
674 char
675 utf8encodebyte(Rune u, size_t i)
676 {
677 return utfbyte[i] | (u & ~utfmask[i]);
678 }
679
680 char *
681 utf8strchr(char *s, Rune u)
682 {
683 Rune r;
684 size_t i, j, len;
685
686 len = strlen(s);
687 for (i = 0, j = 0; i < len; i += j) {
688 if (!(j = utf8decode(&s[i], &r, len - i)))
689 break;
690 if (r == u)
691 return &(s[i]);
692 }
693
694 return NULL;
695 }
696
697 size_t
698 utf8validate(Rune *u, size_t i)
699 {
700 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
701 *u = UTF_INVALID;
702 for (i = 1; *u > utfmax[i]; ++i)
703 ;
704
705 return i;
706 }
707
708 void
709 selinit(void)
710 {
711 clock_gettime(CLOCK_MONOTONIC, &sel.tclick1);
712 clock_gettime(CLOCK_MONOTONIC, &sel.tclick2);
713 sel.mode = SEL_IDLE;
714 sel.snap = 0;
715 sel.ob.x = -1;
716 sel.primary = NULL;
717 sel.clipboard = NULL;
718 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
719 if (sel.xtarget == None)
720 sel.xtarget = XA_STRING;
721 }
722
723 int
724 x2col(int x)
725 {
726 x -= borderpx;
727 x /= xw.cw;
728
729 return LIMIT(x, 0, term.col-1);
730 }
731
732 int
733 y2row(int y)
734 {
735 y -= borderpx;
736 y /= xw.ch;
737
738 return LIMIT(y, 0, term.row-1);
739 }
740
741 int
742 tlinelen(int y)
743 {
744 int i = term.col;
745
746 if (term.line[y][i - 1].mode & ATTR_WRAP)
747 return i;
748
749 while (i > 0 && term.line[y][i - 1].u == ' ')
750 --i;
751
752 return i;
753 }
754
755 void
756 selnormalize(void)
757 {
758 int i;
759
760 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
761 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
762 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
763 } else {
764 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
765 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
766 }
767 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
768 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
769
770 selsnap(&sel.nb.x, &sel.nb.y, -1);
771 selsnap(&sel.ne.x, &sel.ne.y, +1);
772
773 /* expand selection over line breaks */
774 if (sel.type == SEL_RECTANGULAR)
775 return;
776 i = tlinelen(sel.nb.y);
777 if (i < sel.nb.x)
778 sel.nb.x = i;
779 if (tlinelen(sel.ne.y) <= sel.ne.x)
780 sel.ne.x = term.col - 1;
781 }
782
783 int
784 selected(int x, int y)
785 {
786 if (sel.mode == SEL_EMPTY)
787 return 0;
788
789 if (sel.type == SEL_RECTANGULAR)
790 return BETWEEN(y, sel.nb.y, sel.ne.y)
791 && BETWEEN(x, sel.nb.x, sel.ne.x);
792
793 return BETWEEN(y, sel.nb.y, sel.ne.y)
794 && (y != sel.nb.y || x >= sel.nb.x)
795 && (y != sel.ne.y || x <= sel.ne.x);
796 }
797
798 void
799 selsnap(int *x, int *y, int direction)
800 {
801 int newx, newy, xt, yt;
802 int delim, prevdelim;
803 Glyph *gp, *prevgp;
804
805 switch (sel.snap) {
806 case SNAP_WORD:
807 /*
808 * Snap around if the word wraps around at the end or
809 * beginning of a line.
810 */
811 prevgp = &term.line[*y][*x];
812 prevdelim = ISDELIM(prevgp->u);
813 for (;;) {
814 newx = *x + direction;
815 newy = *y;
816 if (!BETWEEN(newx, 0, term.col - 1)) {
817 newy += direction;
818 newx = (newx + term.col) % term.col;
819 if (!BETWEEN(newy, 0, term.row - 1))
820 break;
821
822 if (direction > 0)
823 yt = *y, xt = *x;
824 else
825 yt = newy, xt = newx;
826 if (!(term.line[yt][xt].mode & ATTR_WRAP))
827 break;
828 }
829
830 if (newx >= tlinelen(newy))
831 break;
832
833 gp = &term.line[newy][newx];
834 delim = ISDELIM(gp->u);
835 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
836 || (delim && gp->u != prevgp->u)))
837 break;
838
839 *x = newx;
840 *y = newy;
841 prevgp = gp;
842 prevdelim = delim;
843 }
844 break;
845 case SNAP_LINE:
846 /*
847 * Snap around if the the previous line or the current one
848 * has set ATTR_WRAP at its end. Then the whole next or
849 * previous line will be selected.
850 */
851 *x = (direction < 0) ? 0 : term.col - 1;
852 if (direction < 0) {
853 for (; *y > 0; *y += direction) {
854 if (!(term.line[*y-1][term.col-1].mode
855 & ATTR_WRAP)) {
856 break;
857 }
858 }
859 } else if (direction > 0) {
860 for (; *y < term.row-1; *y += direction) {
861 if (!(term.line[*y][term.col-1].mode
862 & ATTR_WRAP)) {
863 break;
864 }
865 }
866 }
867 break;
868 }
869 }
870
871 void
872 getbuttoninfo(XEvent *e)
873 {
874 int type;
875 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
876
877 sel.alt = IS_SET(MODE_ALTSCREEN);
878
879 sel.oe.x = x2col(e->xbutton.x);
880 sel.oe.y = y2row(e->xbutton.y);
881 selnormalize();
882
883 sel.type = SEL_REGULAR;
884 for (type = 1; type < LEN(selmasks); ++type) {
885 if (match(selmasks[type], state)) {
886 sel.type = type;
887 break;
888 }
889 }
890 }
891
892 void
893 mousereport(XEvent *e)
894 {
895 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
896 button = e->xbutton.button, state = e->xbutton.state,
897 len;
898 char buf[40];
899 static int ox, oy;
900
901 /* from urxvt */
902 if (e->xbutton.type == MotionNotify) {
903 if (x == ox && y == oy)
904 return;
905 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
906 return;
907 /* MOUSE_MOTION: no reporting if no button is pressed */
908 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
909 return;
910
911 button = oldbutton + 32;
912 ox = x;
913 oy = y;
914 } else {
915 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
916 button = 3;
917 } else {
918 button -= Button1;
919 if (button >= 3)
920 button += 64 - 3;
921 }
922 if (e->xbutton.type == ButtonPress) {
923 oldbutton = button;
924 ox = x;
925 oy = y;
926 } else if (e->xbutton.type == ButtonRelease) {
927 oldbutton = 3;
928 /* MODE_MOUSEX10: no button release reporting */
929 if (IS_SET(MODE_MOUSEX10))
930 return;
931 if (button == 64 || button == 65)
932 return;
933 }
934 }
935
936 if (!IS_SET(MODE_MOUSEX10)) {
937 button += ((state & ShiftMask ) ? 4 : 0)
938 + ((state & Mod4Mask ) ? 8 : 0)
939 + ((state & ControlMask) ? 16 : 0);
940 }
941
942 if (IS_SET(MODE_MOUSESGR)) {
943 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
944 button, x+1, y+1,
945 e->xbutton.type == ButtonRelease ? 'm' : 'M');
946 } else if (x < 223 && y < 223) {
947 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
948 32+button, 32+x+1, 32+y+1);
949 } else {
950 return;
951 }
952
953 ttywrite(buf, len);
954 }
955
956 void
957 bpress(XEvent *e)
958 {
959 struct timespec now;
960 MouseShortcut *ms;
961
962 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
963 mousereport(e);
964 return;
965 }
966
967 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
968 if (e->xbutton.button == ms->b
969 && match(ms->mask, e->xbutton.state)) {
970 ttysend(ms->s, strlen(ms->s));
971 return;
972 }
973 }
974
975 if (e->xbutton.button == Button1) {
976 clock_gettime(CLOCK_MONOTONIC, &now);
977
978 /* Clear previous selection, logically and visually. */
979 selclear(NULL);
980 sel.mode = SEL_EMPTY;
981 sel.type = SEL_REGULAR;
982 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
983 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
984
985 /*
986 * If the user clicks below predefined timeouts specific
987 * snapping behaviour is exposed.
988 */
989 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
990 sel.snap = SNAP_LINE;
991 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
992 sel.snap = SNAP_WORD;
993 } else {
994 sel.snap = 0;
995 }
996 selnormalize();
997
998 if (sel.snap != 0)
999 sel.mode = SEL_READY;
1000 tsetdirt(sel.nb.y, sel.ne.y);
1001 sel.tclick2 = sel.tclick1;
1002 sel.tclick1 = now;
1003 }
1004 }
1005
1006 char *
1007 getsel(void)
1008 {
1009 char *str, *ptr;
1010 int y, bufsize, lastx, linelen;
1011 Glyph *gp, *last;
1012
1013 if (sel.ob.x == -1)
1014 return NULL;
1015
1016 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
1017 ptr = str = xmalloc(bufsize);
1018
1019 /* append every set & selected glyph to the selection */
1020 for (y = sel.nb.y; y <= sel.ne.y; y++) {
1021 if ((linelen = tlinelen(y)) == 0) {
1022 *ptr++ = '\n';
1023 continue;
1024 }
1025
1026 if (sel.type == SEL_RECTANGULAR) {
1027 gp = &term.line[y][sel.nb.x];
1028 lastx = sel.ne.x;
1029 } else {
1030 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
1031 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
1032 }
1033 last = &term.line[y][MIN(lastx, linelen-1)];
1034 while (last >= gp && last->u == ' ')
1035 --last;
1036
1037 for ( ; gp <= last; ++gp) {
1038 if (gp->mode & ATTR_WDUMMY)
1039 continue;
1040
1041 ptr += utf8encode(gp->u, ptr);
1042 }
1043
1044 /*
1045 * Copy and pasting of line endings is inconsistent
1046 * in the inconsistent terminal and GUI world.
1047 * The best solution seems like to produce '\n' when
1048 * something is copied from st and convert '\n' to
1049 * '\r', when something to be pasted is received by
1050 * st.
1051 * FIXME: Fix the computer world.
1052 */
1053 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
1054 *ptr++ = '\n';
1055 }
1056 *ptr = 0;
1057 return str;
1058 }
1059
1060 void
1061 selcopy(Time t)
1062 {
1063 xsetsel(getsel(), t);
1064 }
1065
1066 void
1067 propnotify(XEvent *e)
1068 {
1069 XPropertyEvent *xpev;
1070 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1071
1072 xpev = &e->xproperty;
1073 if (xpev->state == PropertyNewValue &&
1074 (xpev->atom == XA_PRIMARY ||
1075 xpev->atom == clipboard)) {
1076 selnotify(e);
1077 }
1078 }
1079
1080 void
1081 selnotify(XEvent *e)
1082 {
1083 ulong nitems, ofs, rem;
1084 int format;
1085 uchar *data, *last, *repl;
1086 Atom type, incratom, property;
1087
1088 incratom = XInternAtom(xw.dpy, "INCR", 0);
1089
1090 ofs = 0;
1091 if (e->type == SelectionNotify) {
1092 property = e->xselection.property;
1093 } else if(e->type == PropertyNotify) {
1094 property = e->xproperty.atom;
1095 } else {
1096 return;
1097 }
1098 if (property == None)
1099 return;
1100
1101 do {
1102 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
1103 BUFSIZ/4, False, AnyPropertyType,
1104 &type, &format, &nitems, &rem,
1105 &data)) {
1106 fprintf(stderr, "Clipboard allocation failed\n");
1107 return;
1108 }
1109
1110 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
1111 /*
1112 * If there is some PropertyNotify with no data, then
1113 * this is the signal of the selection owner that all
1114 * data has been transferred. We won't need to receive
1115 * PropertyNotify events anymore.
1116 */
1117 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
1118 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1119 &xw.attrs);
1120 }
1121
1122 if (type == incratom) {
1123 /*
1124 * Activate the PropertyNotify events so we receive
1125 * when the selection owner does send us the next
1126 * chunk of data.
1127 */
1128 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
1129 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1130 &xw.attrs);
1131
1132 /*
1133 * Deleting the property is the transfer start signal.
1134 */
1135 XDeleteProperty(xw.dpy, xw.win, (int)property);
1136 continue;
1137 }
1138
1139 /*
1140 * As seen in getsel:
1141 * Line endings are inconsistent in the terminal and GUI world
1142 * copy and pasting. When receiving some selection data,
1143 * replace all '\n' with '\r'.
1144 * FIXME: Fix the computer world.
1145 */
1146 repl = data;
1147 last = data + nitems * format / 8;
1148 while ((repl = memchr(repl, '\n', last - repl))) {
1149 *repl++ = '\r';
1150 }
1151
1152 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
1153 ttywrite("\033[200~", 6);
1154 ttysend((char *)data, nitems * format / 8);
1155 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
1156 ttywrite("\033[201~", 6);
1157 XFree(data);
1158 /* number of 32-bit chunks returned */
1159 ofs += nitems * format / 32;
1160 } while (rem > 0);
1161
1162 /*
1163 * Deleting the property again tells the selection owner to send the
1164 * next data chunk in the property.
1165 */
1166 XDeleteProperty(xw.dpy, xw.win, (int)property);
1167 }
1168
1169 void
1170 selpaste(const Arg *dummy)
1171 {
1172 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1173 xw.win, CurrentTime);
1174 }
1175
1176 void
1177 clipcopy(const Arg *dummy)
1178 {
1179 Atom clipboard;
1180
1181 if (sel.clipboard != NULL)
1182 free(sel.clipboard);
1183
1184 if (sel.primary != NULL) {
1185 sel.clipboard = xstrdup(sel.primary);
1186 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1187 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1188 }
1189 }
1190
1191 void
1192 clippaste(const Arg *dummy)
1193 {
1194 Atom clipboard;
1195
1196 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1197 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1198 xw.win, CurrentTime);
1199 }
1200
1201 void
1202 selclear(XEvent *e)
1203 {
1204 if (sel.ob.x == -1)
1205 return;
1206 sel.mode = SEL_IDLE;
1207 sel.ob.x = -1;
1208 tsetdirt(sel.nb.y, sel.ne.y);
1209 }
1210
1211 void
1212 selrequest(XEvent *e)
1213 {
1214 XSelectionRequestEvent *xsre;
1215 XSelectionEvent xev;
1216 Atom xa_targets, string, clipboard;
1217 char *seltext;
1218
1219 xsre = (XSelectionRequestEvent *) e;
1220 xev.type = SelectionNotify;
1221 xev.requestor = xsre->requestor;
1222 xev.selection = xsre->selection;
1223 xev.target = xsre->target;
1224 xev.time = xsre->time;
1225 if (xsre->property == None)
1226 xsre->property = xsre->target;
1227
1228 /* reject */
1229 xev.property = None;
1230
1231 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1232 if (xsre->target == xa_targets) {
1233 /* respond with the supported type */
1234 string = sel.xtarget;
1235 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1236 XA_ATOM, 32, PropModeReplace,
1237 (uchar *) &string, 1);
1238 xev.property = xsre->property;
1239 } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1240 /*
1241 * xith XA_STRING non ascii characters may be incorrect in the
1242 * requestor. It is not our problem, use utf8.
1243 */
1244 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1245 if (xsre->selection == XA_PRIMARY) {
1246 seltext = sel.primary;
1247 } else if (xsre->selection == clipboard) {
1248 seltext = sel.clipboard;
1249 } else {
1250 fprintf(stderr,
1251 "Unhandled clipboard selection 0x%lx\n",
1252 xsre->selection);
1253 return;
1254 }
1255 if (seltext != NULL) {
1256 XChangeProperty(xsre->display, xsre->requestor,
1257 xsre->property, xsre->target,
1258 8, PropModeReplace,
1259 (uchar *)seltext, strlen(seltext));
1260 xev.property = xsre->property;
1261 }
1262 }
1263
1264 /* all done, send a notification to the listener */
1265 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
1266 fprintf(stderr, "Error sending SelectionNotify event\n");
1267 }
1268
1269 void
1270 xsetsel(char *str, Time t)
1271 {
1272 free(sel.primary);
1273 sel.primary = str;
1274
1275 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1276 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1277 selclear(0);
1278 }
1279
1280 void
1281 brelease(XEvent *e)
1282 {
1283 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1284 mousereport(e);
1285 return;
1286 }
1287
1288 if (e->xbutton.button == Button2) {
1289 selpaste(NULL);
1290 } else if (e->xbutton.button == Button1) {
1291 if (sel.mode == SEL_READY) {
1292 getbuttoninfo(e);
1293 selcopy(e->xbutton.time);
1294 } else
1295 selclear(NULL);
1296 sel.mode = SEL_IDLE;
1297 tsetdirt(sel.nb.y, sel.ne.y);
1298 }
1299 }
1300
1301 void
1302 bmotion(XEvent *e)
1303 {
1304 int oldey, oldex, oldsby, oldsey;
1305
1306 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1307 mousereport(e);
1308 return;
1309 }
1310
1311 if (!sel.mode)
1312 return;
1313
1314 sel.mode = SEL_READY;
1315 oldey = sel.oe.y;
1316 oldex = sel.oe.x;
1317 oldsby = sel.nb.y;
1318 oldsey = sel.ne.y;
1319 getbuttoninfo(e);
1320
1321 if (oldey != sel.oe.y || oldex != sel.oe.x)
1322 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1323 }
1324
1325 void
1326 die(const char *errstr, ...)
1327 {
1328 va_list ap;
1329
1330 va_start(ap, errstr);
1331 vfprintf(stderr, errstr, ap);
1332 va_end(ap);
1333 exit(1);
1334 }
1335
1336 void
1337 execsh(void)
1338 {
1339 char **args, *sh, *prog;
1340 const struct passwd *pw;
1341 char buf[sizeof(long) * 8 + 1];
1342
1343 errno = 0;
1344 if ((pw = getpwuid(getuid())) == NULL) {
1345 if (errno)
1346 die("getpwuid:%s\n", strerror(errno));
1347 else
1348 die("who are you?\n");
1349 }
1350
1351 if ((sh = getenv("SHELL")) == NULL)
1352 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1353
1354 if (opt_cmd)
1355 prog = opt_cmd[0];
1356 else if (utmp)
1357 prog = utmp;
1358 else
1359 prog = sh;
1360 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1361
1362 snprintf(buf, sizeof(buf), "%lu", xw.win);
1363
1364 unsetenv("COLUMNS");
1365 unsetenv("LINES");
1366 unsetenv("TERMCAP");
1367 setenv("LOGNAME", pw->pw_name, 1);
1368 setenv("USER", pw->pw_name, 1);
1369 setenv("SHELL", sh, 1);
1370 setenv("HOME", pw->pw_dir, 1);
1371 setenv("TERM", termname, 1);
1372 setenv("WINDOWID", buf, 1);
1373
1374 signal(SIGCHLD, SIG_DFL);
1375 signal(SIGHUP, SIG_DFL);
1376 signal(SIGINT, SIG_DFL);
1377 signal(SIGQUIT, SIG_DFL);
1378 signal(SIGTERM, SIG_DFL);
1379 signal(SIGALRM, SIG_DFL);
1380
1381 execvp(prog, args);
1382 _exit(1);
1383 }
1384
1385 void
1386 sigchld(int a)
1387 {
1388 int stat;
1389 pid_t p;
1390
1391 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
1392 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1393
1394 if (pid != p)
1395 return;
1396
1397 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
1398 die("child finished with error '%d'\n", stat);
1399 exit(0);
1400 }
1401
1402
1403 void
1404 stty(void)
1405 {
1406 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1407 size_t n, siz;
1408
1409 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
1410 die("incorrect stty parameters\n");
1411 memcpy(cmd, stty_args, n);
1412 q = cmd + n;
1413 siz = sizeof(cmd) - n;
1414 for (p = opt_cmd; p && (s = *p); ++p) {
1415 if ((n = strlen(s)) > siz-1)
1416 die("stty parameter length too long\n");
1417 *q++ = ' ';
1418 memcpy(q, s, n);
1419 q += n;
1420 siz -= n + 1;
1421 }
1422 *q = '\0';
1423 if (system(cmd) != 0)
1424 perror("Couldn't call stty");
1425 }
1426
1427 void
1428 ttynew(void)
1429 {
1430 int m, s;
1431 struct winsize w = {term.row, term.col, 0, 0};
1432
1433 if (opt_io) {
1434 term.mode |= MODE_PRINT;
1435 iofd = (!strcmp(opt_io, "-")) ?
1436 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
1437 if (iofd < 0) {
1438 fprintf(stderr, "Error opening %s:%s\n",
1439 opt_io, strerror(errno));
1440 }
1441 }
1442
1443 if (opt_line) {
1444 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
1445 die("open line failed: %s\n", strerror(errno));
1446 dup2(cmdfd, 0);
1447 stty();
1448 return;
1449 }
1450
1451 /* seems to work fine on linux, openbsd and freebsd */
1452 if (openpty(&m, &s, NULL, NULL, &w) < 0)
1453 die("openpty failed: %s\n", strerror(errno));
1454
1455 switch (pid = fork()) {
1456 case -1:
1457 die("fork failed\n");
1458 break;
1459 case 0:
1460 close(iofd);
1461 setsid(); /* create a new process group */
1462 dup2(s, 0);
1463 dup2(s, 1);
1464 dup2(s, 2);
1465 if (ioctl(s, TIOCSCTTY, NULL) < 0)
1466 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1467 close(s);
1468 close(m);
1469 execsh();
1470 break;
1471 default:
1472 close(s);
1473 cmdfd = m;
1474 signal(SIGCHLD, sigchld);
1475 break;
1476 }
1477 }
1478
1479 size_t
1480 ttyread(void)
1481 {
1482 static char buf[BUFSIZ];
1483 static int buflen = 0;
1484 char *ptr;
1485 int charsize; /* size of utf8 char in bytes */
1486 Rune unicodep;
1487 int ret;
1488
1489 /* append read bytes to unprocessed bytes */
1490 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1491 die("Couldn't read from shell: %s\n", strerror(errno));
1492
1493 buflen += ret;
1494 ptr = buf;
1495
1496 for (;;) {
1497 if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
1498 /* process a complete utf8 char */
1499 charsize = utf8decode(ptr, &unicodep, buflen);
1500 if (charsize == 0)
1501 break;
1502 tputc(unicodep);
1503 ptr += charsize;
1504 buflen -= charsize;
1505
1506 } else {
1507 if (buflen <= 0)
1508 break;
1509 tputc(*ptr++ & 0xFF);
1510 buflen--;
1511 }
1512 }
1513 /* keep any uncomplete utf8 char for the next call */
1514 if (buflen > 0)
1515 memmove(buf, ptr, buflen);
1516
1517 return ret;
1518 }
1519
1520 void
1521 ttywrite(const char *s, size_t n)
1522 {
1523 fd_set wfd, rfd;
1524 ssize_t r;
1525 size_t lim = 256;
1526
1527 /*
1528 * Remember that we are using a pty, which might be a modem line.
1529 * Writing too much will clog the line. That's why we are doing this
1530 * dance.
1531 * FIXME: Migrate the world to Plan 9.
1532 */
1533 while (n > 0) {
1534 FD_ZERO(&wfd);
1535 FD_ZERO(&rfd);
1536 FD_SET(cmdfd, &wfd);
1537 FD_SET(cmdfd, &rfd);
1538
1539 /* Check if we can write. */
1540 if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
1541 if (errno == EINTR)
1542 continue;
1543 die("select failed: %s\n", strerror(errno));
1544 }
1545 if (FD_ISSET(cmdfd, &wfd)) {
1546 /*
1547 * Only write the bytes written by ttywrite() or the
1548 * default of 256. This seems to be a reasonable value
1549 * for a serial line. Bigger values might clog the I/O.
1550 */
1551 if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
1552 goto write_error;
1553 if (r < n) {
1554 /*
1555 * We weren't able to write out everything.
1556 * This means the buffer is getting full
1557 * again. Empty it.
1558 */
1559 if (n < lim)
1560 lim = ttyread();
1561 n -= r;
1562 s += r;
1563 } else {
1564 /* All bytes have been written. */
1565 break;
1566 }
1567 }
1568 if (FD_ISSET(cmdfd, &rfd))
1569 lim = ttyread();
1570 }
1571 return;
1572
1573 write_error:
1574 die("write error on tty: %s\n", strerror(errno));
1575 }
1576
1577 void
1578 ttysend(char *s, size_t n)
1579 {
1580 int len;
1581 char *t, *lim;
1582 Rune u;
1583
1584 ttywrite(s, n);
1585 if (!IS_SET(MODE_ECHO))
1586 return;
1587
1588 lim = &s[n];
1589 for (t = s; t < lim; t += len) {
1590 if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
1591 len = utf8decode(t, &u, n);
1592 } else {
1593 u = *t & 0xFF;
1594 len = 1;
1595 }
1596 if (len <= 0)
1597 break;
1598 techo(u);
1599 n -= len;
1600 }
1601 }
1602
1603 void
1604 ttyresize(void)
1605 {
1606 struct winsize w;
1607
1608 w.ws_row = term.row;
1609 w.ws_col = term.col;
1610 w.ws_xpixel = xw.tw;
1611 w.ws_ypixel = xw.th;
1612 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1613 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1614 }
1615
1616 int
1617 tattrset(int attr)
1618 {
1619 int i, j;
1620
1621 for (i = 0; i < term.row-1; i++) {
1622 for (j = 0; j < term.col-1; j++) {
1623 if (term.line[i][j].mode & attr)
1624 return 1;
1625 }
1626 }
1627
1628 return 0;
1629 }
1630
1631 void
1632 tsetdirt(int top, int bot)
1633 {
1634 int i;
1635
1636 LIMIT(top, 0, term.row-1);
1637 LIMIT(bot, 0, term.row-1);
1638
1639 for (i = top; i <= bot; i++)
1640 term.dirty[i] = 1;
1641 }
1642
1643 void
1644 tsetdirtattr(int attr)
1645 {
1646 int i, j;
1647
1648 for (i = 0; i < term.row-1; i++) {
1649 for (j = 0; j < term.col-1; j++) {
1650 if (term.line[i][j].mode & attr) {
1651 tsetdirt(i, i);
1652 break;
1653 }
1654 }
1655 }
1656 }
1657
1658 void
1659 tfulldirt(void)
1660 {
1661 tsetdirt(0, term.row-1);
1662 }
1663
1664 void
1665 tcursor(int mode)
1666 {
1667 static TCursor c[2];
1668 int alt = IS_SET(MODE_ALTSCREEN);
1669
1670 if (mode == CURSOR_SAVE) {
1671 c[alt] = term.c;
1672 } else if (mode == CURSOR_LOAD) {
1673 term.c = c[alt];
1674 tmoveto(c[alt].x, c[alt].y);
1675 }
1676 }
1677
1678 void
1679 treset(void)
1680 {
1681 uint i;
1682
1683 term.c = (TCursor){{
1684 .mode = ATTR_NULL,
1685 .fg = defaultfg,
1686 .bg = defaultbg
1687 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1688
1689 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1690 for (i = tabspaces; i < term.col; i += tabspaces)
1691 term.tabs[i] = 1;
1692 term.top = 0;
1693 term.bot = term.row - 1;
1694 term.mode = MODE_WRAP|MODE_UTF8;
1695 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1696 term.charset = 0;
1697
1698 for (i = 0; i < 2; i++) {
1699 tmoveto(0, 0);
1700 tcursor(CURSOR_SAVE);
1701 tclearregion(0, 0, term.col-1, term.row-1);
1702 tswapscreen();
1703 }
1704 }
1705
1706 void
1707 tnew(int col, int row)
1708 {
1709 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1710 tresize(col, row);
1711 term.numlock = 1;
1712
1713 treset();
1714 }
1715
1716 void
1717 tswapscreen(void)
1718 {
1719 Line *tmp = term.line;
1720
1721 term.line = term.alt;
1722 term.alt = tmp;
1723 term.mode ^= MODE_ALTSCREEN;
1724 tfulldirt();
1725 }
1726
1727 void
1728 tscrolldown(int orig, int n)
1729 {
1730 int i;
1731 Line temp;
1732
1733 LIMIT(n, 0, term.bot-orig+1);
1734
1735 tsetdirt(orig, term.bot-n);
1736 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1737
1738 for (i = term.bot; i >= orig+n; i--) {
1739 temp = term.line[i];
1740 term.line[i] = term.line[i-n];
1741 term.line[i-n] = temp;
1742 }
1743
1744 selscroll(orig, n);
1745 }
1746
1747 void
1748 tscrollup(int orig, int n)
1749 {
1750 int i;
1751 Line temp;
1752
1753 LIMIT(n, 0, term.bot-orig+1);
1754
1755 tclearregion(0, orig, term.col-1, orig+n-1);
1756 tsetdirt(orig+n, term.bot);
1757
1758 for (i = orig; i <= term.bot-n; i++) {
1759 temp = term.line[i];
1760 term.line[i] = term.line[i+n];
1761 term.line[i+n] = temp;
1762 }
1763
1764 selscroll(orig, -n);
1765 }
1766
1767 void
1768 selscroll(int orig, int n)
1769 {
1770 if (sel.ob.x == -1)
1771 return;
1772
1773 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1774 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1775 selclear(NULL);
1776 return;
1777 }
1778 if (sel.type == SEL_RECTANGULAR) {
1779 if (sel.ob.y < term.top)
1780 sel.ob.y = term.top;
1781 if (sel.oe.y > term.bot)
1782 sel.oe.y = term.bot;
1783 } else {
1784 if (sel.ob.y < term.top) {
1785 sel.ob.y = term.top;
1786 sel.ob.x = 0;
1787 }
1788 if (sel.oe.y > term.bot) {
1789 sel.oe.y = term.bot;
1790 sel.oe.x = term.col;
1791 }
1792 }
1793 selnormalize();
1794 }
1795 }
1796
1797 void
1798 tnewline(int first_col)
1799 {
1800 int y = term.c.y;
1801
1802 if (y == term.bot) {
1803 tscrollup(term.top, 1);
1804 } else {
1805 y++;
1806 }
1807 tmoveto(first_col ? 0 : term.c.x, y);
1808 }
1809
1810 void
1811 csiparse(void)
1812 {
1813 char *p = csiescseq.buf, *np;
1814 long int v;
1815
1816 csiescseq.narg = 0;
1817 if (*p == '?') {
1818 csiescseq.priv = 1;
1819 p++;
1820 }
1821
1822 csiescseq.buf[csiescseq.len] = '\0';
1823 while (p < csiescseq.buf+csiescseq.len) {
1824 np = NULL;
1825 v = strtol(p, &np, 10);
1826 if (np == p)
1827 v = 0;
1828 if (v == LONG_MAX || v == LONG_MIN)
1829 v = -1;
1830 csiescseq.arg[csiescseq.narg++] = v;
1831 p = np;
1832 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1833 break;
1834 p++;
1835 }
1836 csiescseq.mode[0] = *p++;
1837 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1838 }
1839
1840 /* for absolute user moves, when decom is set */
1841 void
1842 tmoveato(int x, int y)
1843 {
1844 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1845 }
1846
1847 void
1848 tmoveto(int x, int y)
1849 {
1850 int miny, maxy;
1851
1852 if (term.c.state & CURSOR_ORIGIN) {
1853 miny = term.top;
1854 maxy = term.bot;
1855 } else {
1856 miny = 0;
1857 maxy = term.row - 1;
1858 }
1859 term.c.state &= ~CURSOR_WRAPNEXT;
1860 term.c.x = LIMIT(x, 0, term.col-1);
1861 term.c.y = LIMIT(y, miny, maxy);
1862 }
1863
1864 void
1865 tsetchar(Rune u, Glyph *attr, int x, int y)
1866 {
1867 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1868 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1869 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1870 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1871 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1872 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1873 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1874 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1875 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1876 };
1877
1878 /*
1879 * The table is proudly stolen from rxvt.
1880 */
1881 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1882 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1883 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1884
1885 if (term.line[y][x].mode & ATTR_WIDE) {
1886 if (x+1 < term.col) {
1887 term.line[y][x+1].u = ' ';
1888 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1889 }
1890 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1891 term.line[y][x-1].u = ' ';
1892 term.line[y][x-1].mode &= ~ATTR_WIDE;
1893 }
1894
1895 term.dirty[y] = 1;
1896 term.line[y][x] = *attr;
1897 term.line[y][x].u = u;
1898 }
1899
1900 void
1901 tclearregion(int x1, int y1, int x2, int y2)
1902 {
1903 int x, y, temp;
1904 Glyph *gp;
1905
1906 if (x1 > x2)
1907 temp = x1, x1 = x2, x2 = temp;
1908 if (y1 > y2)
1909 temp = y1, y1 = y2, y2 = temp;
1910
1911 LIMIT(x1, 0, term.col-1);
1912 LIMIT(x2, 0, term.col-1);
1913 LIMIT(y1, 0, term.row-1);
1914 LIMIT(y2, 0, term.row-1);
1915
1916 for (y = y1; y <= y2; y++) {
1917 term.dirty[y] = 1;
1918 for (x = x1; x <= x2; x++) {
1919 gp = &term.line[y][x];
1920 if (selected(x, y))
1921 selclear(NULL);
1922 gp->fg = term.c.attr.fg;
1923 gp->bg = term.c.attr.bg;
1924 gp->mode = 0;
1925 gp->u = ' ';
1926 }
1927 }
1928 }
1929
1930 void
1931 tdeletechar(int n)
1932 {
1933 int dst, src, size;
1934 Glyph *line;
1935
1936 LIMIT(n, 0, term.col - term.c.x);
1937
1938 dst = term.c.x;
1939 src = term.c.x + n;
1940 size = term.col - src;
1941 line = term.line[term.c.y];
1942
1943 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1944 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1945 }
1946
1947 void
1948 tinsertblank(int n)
1949 {
1950 int dst, src, size;
1951 Glyph *line;
1952
1953 LIMIT(n, 0, term.col - term.c.x);
1954
1955 dst = term.c.x + n;
1956 src = term.c.x;
1957 size = term.col - dst;
1958 line = term.line[term.c.y];
1959
1960 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1961 tclearregion(src, term.c.y, dst - 1, term.c.y);
1962 }
1963
1964 void
1965 tinsertblankline(int n)
1966 {
1967 if (BETWEEN(term.c.y, term.top, term.bot))
1968 tscrolldown(term.c.y, n);
1969 }
1970
1971 void
1972 tdeleteline(int n)
1973 {
1974 if (BETWEEN(term.c.y, term.top, term.bot))
1975 tscrollup(term.c.y, n);
1976 }
1977
1978 int32_t
1979 tdefcolor(int *attr, int *npar, int l)
1980 {
1981 int32_t idx = -1;
1982 uint r, g, b;
1983
1984 switch (attr[*npar + 1]) {
1985 case 2: /* direct color in RGB space */
1986 if (*npar + 4 >= l) {
1987 fprintf(stderr,
1988 "erresc(38): Incorrect number of parameters (%d)\n",
1989 *npar);
1990 break;
1991 }
1992 r = attr[*npar + 2];
1993 g = attr[*npar + 3];
1994 b = attr[*npar + 4];
1995 *npar += 4;
1996 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1997 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1998 r, g, b);
1999 else
2000 idx = TRUECOLOR(r, g, b);
2001 break;
2002 case 5: /* indexed color */
2003 if (*npar + 2 >= l) {
2004 fprintf(stderr,
2005 "erresc(38): Incorrect number of parameters (%d)\n",
2006 *npar);
2007 break;
2008 }
2009 *npar += 2;
2010 if (!BETWEEN(attr[*npar], 0, 255))
2011 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
2012 else
2013 idx = attr[*npar];
2014 break;
2015 case 0: /* implemented defined (only foreground) */
2016 case 1: /* transparent */
2017 case 3: /* direct color in CMY space */
2018 case 4: /* direct color in CMYK space */
2019 default:
2020 fprintf(stderr,
2021 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
2022 break;
2023 }
2024
2025 return idx;
2026 }
2027
2028 void
2029 tsetattr(int *attr, int l)
2030 {
2031 int i;
2032 int32_t idx;
2033
2034 for (i = 0; i < l; i++) {
2035 switch (attr[i]) {
2036 case 0:
2037 term.c.attr.mode &= ~(
2038 ATTR_BOLD |
2039 ATTR_FAINT |
2040 ATTR_ITALIC |
2041 ATTR_UNDERLINE |
2042 ATTR_BLINK |
2043 ATTR_REVERSE |
2044 ATTR_INVISIBLE |
2045 ATTR_STRUCK );
2046 term.c.attr.fg = defaultfg;
2047 term.c.attr.bg = defaultbg;
2048 break;
2049 case 1:
2050 term.c.attr.mode |= ATTR_BOLD;
2051 break;
2052 case 2:
2053 term.c.attr.mode |= ATTR_FAINT;
2054 break;
2055 case 3:
2056 term.c.attr.mode |= ATTR_ITALIC;
2057 break;
2058 case 4:
2059 term.c.attr.mode |= ATTR_UNDERLINE;
2060 break;
2061 case 5: /* slow blink */
2062 /* FALLTHROUGH */
2063 case 6: /* rapid blink */
2064 term.c.attr.mode |= ATTR_BLINK;
2065 break;
2066 case 7:
2067 term.c.attr.mode |= ATTR_REVERSE;
2068 break;
2069 case 8:
2070 term.c.attr.mode |= ATTR_INVISIBLE;
2071 break;
2072 case 9:
2073 term.c.attr.mode |= ATTR_STRUCK;
2074 break;
2075 case 22:
2076 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
2077 break;
2078 case 23:
2079 term.c.attr.mode &= ~ATTR_ITALIC;
2080 break;
2081 case 24:
2082 term.c.attr.mode &= ~ATTR_UNDERLINE;
2083 break;
2084 case 25:
2085 term.c.attr.mode &= ~ATTR_BLINK;
2086 break;
2087 case 27:
2088 term.c.attr.mode &= ~ATTR_REVERSE;
2089 break;
2090 case 28:
2091 term.c.attr.mode &= ~ATTR_INVISIBLE;
2092 break;
2093 case 29:
2094 term.c.attr.mode &= ~ATTR_STRUCK;
2095 break;
2096 case 38:
2097 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2098 term.c.attr.fg = idx;
2099 break;
2100 case 39:
2101 term.c.attr.fg = defaultfg;
2102 break;
2103 case 48:
2104 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2105 term.c.attr.bg = idx;
2106 break;
2107 case 49:
2108 term.c.attr.bg = defaultbg;
2109 break;
2110 default:
2111 if (BETWEEN(attr[i], 30, 37)) {
2112 term.c.attr.fg = attr[i] - 30;
2113 } else if (BETWEEN(attr[i], 40, 47)) {
2114 term.c.attr.bg = attr[i] - 40;
2115 } else if (BETWEEN(attr[i], 90, 97)) {
2116 term.c.attr.fg = attr[i] - 90 + 8;
2117 } else if (BETWEEN(attr[i], 100, 107)) {
2118 term.c.attr.bg = attr[i] - 100 + 8;
2119 } else {
2120 fprintf(stderr,
2121 "erresc(default): gfx attr %d unknown\n",
2122 attr[i]), csidump();
2123 }
2124 break;
2125 }
2126 }
2127 }
2128
2129 void
2130 tsetscroll(int t, int b)
2131 {
2132 int temp;
2133
2134 LIMIT(t, 0, term.row-1);
2135 LIMIT(b, 0, term.row-1);
2136 if (t > b) {
2137 temp = t;
2138 t = b;
2139 b = temp;
2140 }
2141 term.top = t;
2142 term.bot = b;
2143 }
2144
2145 void
2146 tsetmode(int priv, int set, int *args, int narg)
2147 {
2148 int *lim, mode;
2149 int alt;
2150
2151 for (lim = args + narg; args < lim; ++args) {
2152 if (priv) {
2153 switch (*args) {
2154 case 1: /* DECCKM -- Cursor key */
2155 MODBIT(term.mode, set, MODE_APPCURSOR);
2156 break;
2157 case 5: /* DECSCNM -- Reverse video */
2158 mode = term.mode;
2159 MODBIT(term.mode, set, MODE_REVERSE);
2160 if (mode != term.mode)
2161 redraw();
2162 break;
2163 case 6: /* DECOM -- Origin */
2164 MODBIT(term.c.state, set, CURSOR_ORIGIN);
2165 tmoveato(0, 0);
2166 break;
2167 case 7: /* DECAWM -- Auto wrap */
2168 MODBIT(term.mode, set, MODE_WRAP);
2169 break;
2170 case 0: /* Error (IGNORED) */
2171 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
2172 case 3: /* DECCOLM -- Column (IGNORED) */
2173 case 4: /* DECSCLM -- Scroll (IGNORED) */
2174 case 8: /* DECARM -- Auto repeat (IGNORED) */
2175 case 18: /* DECPFF -- Printer feed (IGNORED) */
2176 case 19: /* DECPEX -- Printer extent (IGNORED) */
2177 case 42: /* DECNRCM -- National characters (IGNORED) */
2178 case 12: /* att610 -- Start blinking cursor (IGNORED) */
2179 break;
2180 case 25: /* DECTCEM -- Text Cursor Enable Mode */
2181 MODBIT(term.mode, !set, MODE_HIDE);
2182 break;
2183 case 9: /* X10 mouse compatibility mode */
2184 xsetpointermotion(0);
2185 MODBIT(term.mode, 0, MODE_MOUSE);
2186 MODBIT(term.mode, set, MODE_MOUSEX10);
2187 break;
2188 case 1000: /* 1000: report button press */
2189 xsetpointermotion(0);
2190 MODBIT(term.mode, 0, MODE_MOUSE);
2191 MODBIT(term.mode, set, MODE_MOUSEBTN);
2192 break;
2193 case 1002: /* 1002: report motion on button press */
2194 xsetpointermotion(0);
2195 MODBIT(term.mode, 0, MODE_MOUSE);
2196 MODBIT(term.mode, set, MODE_MOUSEMOTION);
2197 break;
2198 case 1003: /* 1003: enable all mouse motions */
2199 xsetpointermotion(set);
2200 MODBIT(term.mode, 0, MODE_MOUSE);
2201 MODBIT(term.mode, set, MODE_MOUSEMANY);
2202 break;
2203 case 1004: /* 1004: send focus events to tty */
2204 MODBIT(term.mode, set, MODE_FOCUS);
2205 break;
2206 case 1006: /* 1006: extended reporting mode */
2207 MODBIT(term.mode, set, MODE_MOUSESGR);
2208 break;
2209 case 1034:
2210 MODBIT(term.mode, set, MODE_8BIT);
2211 break;
2212 case 1049: /* swap screen & set/restore cursor as xterm */
2213 if (!allowaltscreen)
2214 break;
2215 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2216 /* FALLTHROUGH */
2217 case 47: /* swap screen */
2218 case 1047:
2219 if (!allowaltscreen)
2220 break;
2221 alt = IS_SET(MODE_ALTSCREEN);
2222 if (alt) {
2223 tclearregion(0, 0, term.col-1,
2224 term.row-1);
2225 }
2226 if (set ^ alt) /* set is always 1 or 0 */
2227 tswapscreen();
2228 if (*args != 1049)
2229 break;
2230 /* FALLTHROUGH */
2231 case 1048:
2232 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2233 break;
2234 case 2004: /* 2004: bracketed paste mode */
2235 MODBIT(term.mode, set, MODE_BRCKTPASTE);
2236 break;
2237 /* Not implemented mouse modes. See comments there. */
2238 case 1001: /* mouse highlight mode; can hang the
2239 terminal by design when implemented. */
2240 case 1005: /* UTF-8 mouse mode; will confuse
2241 applications not supporting UTF-8
2242 and luit. */
2243 case 1015: /* urxvt mangled mouse mode; incompatible
2244 and can be mistaken for other control
2245 codes. */
2246 default:
2247 fprintf(stderr,
2248 "erresc: unknown private set/reset mode %d\n",
2249 *args);
2250 break;
2251 }
2252 } else {
2253 switch (*args) {
2254 case 0: /* Error (IGNORED) */
2255 break;
2256 case 2: /* KAM -- keyboard action */
2257 MODBIT(term.mode, set, MODE_KBDLOCK);
2258 break;
2259 case 4: /* IRM -- Insertion-replacement */
2260 MODBIT(term.mode, set, MODE_INSERT);
2261 break;
2262 case 12: /* SRM -- Send/Receive */
2263 MODBIT(term.mode, !set, MODE_ECHO);
2264 break;
2265 case 20: /* LNM -- Linefeed/new line */
2266 MODBIT(term.mode, set, MODE_CRLF);
2267 break;
2268 default:
2269 fprintf(stderr,
2270 "erresc: unknown set/reset mode %d\n",
2271 *args);
2272 break;
2273 }
2274 }
2275 }
2276 }
2277
2278 void
2279 csihandle(void)
2280 {
2281 char buf[40];
2282 int len;
2283
2284 switch (csiescseq.mode[0]) {
2285 default:
2286 unknown:
2287 fprintf(stderr, "erresc: unknown csi ");
2288 csidump();
2289 /* die(""); */
2290 break;
2291 case '@': /* ICH -- Insert <n> blank char */
2292 DEFAULT(csiescseq.arg[0], 1);
2293 tinsertblank(csiescseq.arg[0]);
2294 break;
2295 case 'A': /* CUU -- Cursor <n> Up */
2296 DEFAULT(csiescseq.arg[0], 1);
2297 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2298 break;
2299 case 'B': /* CUD -- Cursor <n> Down */
2300 case 'e': /* VPR --Cursor <n> Down */
2301 DEFAULT(csiescseq.arg[0], 1);
2302 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2303 break;
2304 case 'i': /* MC -- Media Copy */
2305 switch (csiescseq.arg[0]) {
2306 case 0:
2307 tdump();
2308 break;
2309 case 1:
2310 tdumpline(term.c.y);
2311 break;
2312 case 2:
2313 tdumpsel();
2314 break;
2315 case 4:
2316 term.mode &= ~MODE_PRINT;
2317 break;
2318 case 5:
2319 term.mode |= MODE_PRINT;
2320 break;
2321 }
2322 break;
2323 case 'c': /* DA -- Device Attributes */
2324 if (csiescseq.arg[0] == 0)
2325 ttywrite(vtiden, sizeof(vtiden) - 1);
2326 break;
2327 case 'C': /* CUF -- Cursor <n> Forward */
2328 case 'a': /* HPR -- Cursor <n> Forward */
2329 DEFAULT(csiescseq.arg[0], 1);
2330 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2331 break;
2332 case 'D': /* CUB -- Cursor <n> Backward */
2333 DEFAULT(csiescseq.arg[0], 1);
2334 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2335 break;
2336 case 'E': /* CNL -- Cursor <n> Down and first col */
2337 DEFAULT(csiescseq.arg[0], 1);
2338 tmoveto(0, term.c.y+csiescseq.arg[0]);
2339 break;
2340 case 'F': /* CPL -- Cursor <n> Up and first col */
2341 DEFAULT(csiescseq.arg[0], 1);
2342 tmoveto(0, term.c.y-csiescseq.arg[0]);
2343 break;
2344 case 'g': /* TBC -- Tabulation clear */
2345 switch (csiescseq.arg[0]) {
2346 case 0: /* clear current tab stop */
2347 term.tabs[term.c.x] = 0;
2348 break;
2349 case 3: /* clear all the tabs */
2350 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2351 break;
2352 default:
2353 goto unknown;
2354 }
2355 break;
2356 case 'G': /* CHA -- Move to <col> */
2357 case '`': /* HPA */
2358 DEFAULT(csiescseq.arg[0], 1);
2359 tmoveto(csiescseq.arg[0]-1, term.c.y);
2360 break;
2361 case 'H': /* CUP -- Move to <row> <col> */
2362 case 'f': /* HVP */
2363 DEFAULT(csiescseq.arg[0], 1);
2364 DEFAULT(csiescseq.arg[1], 1);
2365 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2366 break;
2367 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2368 DEFAULT(csiescseq.arg[0], 1);
2369 tputtab(csiescseq.arg[0]);
2370 break;
2371 case 'J': /* ED -- Clear screen */
2372 selclear(NULL);
2373 switch (csiescseq.arg[0]) {
2374 case 0: /* below */
2375 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2376 if (term.c.y < term.row-1) {
2377 tclearregion(0, term.c.y+1, term.col-1,
2378 term.row-1);
2379 }
2380 break;
2381 case 1: /* above */
2382 if (term.c.y > 1)
2383 tclearregion(0, 0, term.col-1, term.c.y-1);
2384 tclearregion(0, term.c.y, term.c.x, term.c.y);
2385 break;
2386 case 2: /* all */
2387 tclearregion(0, 0, term.col-1, term.row-1);
2388 break;
2389 default:
2390 goto unknown;
2391 }
2392 break;
2393 case 'K': /* EL -- Clear line */
2394 switch (csiescseq.arg[0]) {
2395 case 0: /* right */
2396 tclearregion(term.c.x, term.c.y, term.col-1,
2397 term.c.y);
2398 break;
2399 case 1: /* left */
2400 tclearregion(0, term.c.y, term.c.x, term.c.y);
2401 break;
2402 case 2: /* all */
2403 tclearregion(0, term.c.y, term.col-1, term.c.y);
2404 break;
2405 }
2406 break;
2407 case 'S': /* SU -- Scroll <n> line up */
2408 DEFAULT(csiescseq.arg[0], 1);
2409 tscrollup(term.top, csiescseq.arg[0]);
2410 break;
2411 case 'T': /* SD -- Scroll <n> line down */
2412 DEFAULT(csiescseq.arg[0], 1);
2413 tscrolldown(term.top, csiescseq.arg[0]);
2414 break;
2415 case 'L': /* IL -- Insert <n> blank lines */
2416 DEFAULT(csiescseq.arg[0], 1);
2417 tinsertblankline(csiescseq.arg[0]);
2418 break;
2419 case 'l': /* RM -- Reset Mode */
2420 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2421 break;
2422 case 'M': /* DL -- Delete <n> lines */
2423 DEFAULT(csiescseq.arg[0], 1);
2424 tdeleteline(csiescseq.arg[0]);
2425 break;
2426 case 'X': /* ECH -- Erase <n> char */
2427 DEFAULT(csiescseq.arg[0], 1);
2428 tclearregion(term.c.x, term.c.y,
2429 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2430 break;
2431 case 'P': /* DCH -- Delete <n> char */
2432 DEFAULT(csiescseq.arg[0], 1);
2433 tdeletechar(csiescseq.arg[0]);
2434 break;
2435 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2436 DEFAULT(csiescseq.arg[0], 1);
2437 tputtab(-csiescseq.arg[0]);
2438 break;
2439 case 'd': /* VPA -- Move to <row> */
2440 DEFAULT(csiescseq.arg[0], 1);
2441 tmoveato(term.c.x, csiescseq.arg[0]-1);
2442 break;
2443 case 'h': /* SM -- Set terminal mode */
2444 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2445 break;
2446 case 'm': /* SGR -- Terminal attribute (color) */
2447 tsetattr(csiescseq.arg, csiescseq.narg);
2448 break;
2449 case 'n': /* DSR – Device Status Report (cursor position) */
2450 if (csiescseq.arg[0] == 6) {
2451 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2452 term.c.y+1, term.c.x+1);
2453 ttywrite(buf, len);
2454 }
2455 break;
2456 case 'r': /* DECSTBM -- Set Scrolling Region */
2457 if (csiescseq.priv) {
2458 goto unknown;
2459 } else {
2460 DEFAULT(csiescseq.arg[0], 1);
2461 DEFAULT(csiescseq.arg[1], term.row);
2462 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2463 tmoveato(0, 0);
2464 }
2465 break;
2466 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2467 tcursor(CURSOR_SAVE);
2468 break;
2469 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2470 tcursor(CURSOR_LOAD);
2471 break;
2472 case ' ':
2473 switch (csiescseq.mode[1]) {
2474 case 'q': /* DECSCUSR -- Set Cursor Style */
2475 DEFAULT(csiescseq.arg[0], 1);
2476 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2477 goto unknown;
2478 }
2479 xw.cursor = csiescseq.arg[0];
2480 break;
2481 default:
2482 goto unknown;
2483 }
2484 break;
2485 }
2486 }
2487
2488 void
2489 csidump(void)
2490 {
2491 int i;
2492 uint c;
2493
2494 fprintf(stderr, "ESC[");
2495 for (i = 0; i < csiescseq.len; i++) {
2496 c = csiescseq.buf[i] & 0xff;
2497 if (isprint(c)) {
2498 putc(c, stderr);
2499 } else if (c == '\n') {
2500 fprintf(stderr, "(\\n)");
2501 } else if (c == '\r') {
2502 fprintf(stderr, "(\\r)");
2503 } else if (c == 0x1b) {
2504 fprintf(stderr, "(\\e)");
2505 } else {
2506 fprintf(stderr, "(%02x)", c);
2507 }
2508 }
2509 putc('\n', stderr);
2510 }
2511
2512 void
2513 csireset(void)
2514 {
2515 memset(&csiescseq, 0, sizeof(csiescseq));
2516 }
2517
2518 void
2519 strhandle(void)
2520 {
2521 char *p = NULL;
2522 int j, narg, par;
2523
2524 term.esc &= ~(ESC_STR_END|ESC_STR);
2525 strparse();
2526 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2527
2528 switch (strescseq.type) {
2529 case ']': /* OSC -- Operating System Command */
2530 switch (par) {
2531 case 0:
2532 case 1:
2533 case 2:
2534 if (narg > 1)
2535 xsettitle(strescseq.args[1]);
2536 return;
2537 case 4: /* color set */
2538 if (narg < 3)
2539 break;
2540 p = strescseq.args[2];
2541 /* FALLTHROUGH */
2542 case 104: /* color reset, here p = NULL */
2543 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2544 if (xsetcolorname(j, p)) {
2545 fprintf(stderr, "erresc: invalid color %s\n", p);
2546 } else {
2547 /*
2548 * TODO if defaultbg color is changed, borders
2549 * are dirty
2550 */
2551 redraw();
2552 }
2553 return;
2554 }
2555 break;
2556 case 'k': /* old title set compatibility */
2557 xsettitle(strescseq.args[0]);
2558 return;
2559 case 'P': /* DCS -- Device Control String */
2560 term.mode |= ESC_DCS;
2561 case '_': /* APC -- Application Program Command */
2562 case '^': /* PM -- Privacy Message */
2563 return;
2564 }
2565
2566 fprintf(stderr, "erresc: unknown str ");
2567 strdump();
2568 }
2569
2570 void
2571 strparse(void)
2572 {
2573 int c;
2574 char *p = strescseq.buf;
2575
2576 strescseq.narg = 0;
2577 strescseq.buf[strescseq.len] = '\0';
2578
2579 if (*p == '\0')
2580 return;
2581
2582 while (strescseq.narg < STR_ARG_SIZ) {
2583 strescseq.args[strescseq.narg++] = p;
2584 while ((c = *p) != ';' && c != '\0')
2585 ++p;
2586 if (c == '\0')
2587 return;
2588 *p++ = '\0';
2589 }
2590 }
2591
2592 void
2593 strdump(void)
2594 {
2595 int i;
2596 uint c;
2597
2598 fprintf(stderr, "ESC%c", strescseq.type);
2599 for (i = 0; i < strescseq.len; i++) {
2600 c = strescseq.buf[i] & 0xff;
2601 if (c == '\0') {
2602 putc('\n', stderr);
2603 return;
2604 } else if (isprint(c)) {
2605 putc(c, stderr);
2606 } else if (c == '\n') {
2607 fprintf(stderr, "(\\n)");
2608 } else if (c == '\r') {
2609 fprintf(stderr, "(\\r)");
2610 } else if (c == 0x1b) {
2611 fprintf(stderr, "(\\e)");
2612 } else {
2613 fprintf(stderr, "(%02x)", c);
2614 }
2615 }
2616 fprintf(stderr, "ESC\\\n");
2617 }
2618
2619 void
2620 strreset(void)
2621 {
2622 memset(&strescseq, 0, sizeof(strescseq));
2623 }
2624
2625 void
2626 sendbreak(const Arg *arg)
2627 {
2628 if (tcsendbreak(cmdfd, 0))
2629 perror("Error sending break");
2630 }
2631
2632 void
2633 tprinter(char *s, size_t len)
2634 {
2635 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
2636 fprintf(stderr, "Error writing in %s:%s\n",
2637 opt_io, strerror(errno));
2638 close(iofd);
2639 iofd = -1;
2640 }
2641 }
2642
2643 void
2644 iso14755(const Arg *arg)
2645 {
2646 char cmd[sizeof(ISO14755CMD) + NUMMAXLEN(xw.win)];
2647 FILE *p;
2648 char *us, *e, codepoint[9], uc[UTF_SIZ];
2649 unsigned long utf32;
2650
2651 snprintf(cmd, sizeof(cmd), ISO14755CMD, xw.win);
2652 if (!(p = popen(cmd, "r")))
2653 return;
2654
2655 us = fgets(codepoint, sizeof(codepoint), p);
2656 pclose(p);
2657
2658 if (!us || *us == '\0' || *us == '-' || strlen(us) > 7)
2659 return;
2660 if ((utf32 = strtoul(us, &e, 16)) == ULONG_MAX ||
2661 (*e != '\n' && *e != '\0'))
2662 return;
2663
2664 ttysend(uc, utf8encode(utf32, uc));
2665 }
2666
2667 void
2668 toggleprinter(const Arg *arg)
2669 {
2670 term.mode ^= MODE_PRINT;
2671 }
2672
2673 void
2674 printscreen(const Arg *arg)
2675 {
2676 tdump();
2677 }
2678
2679 void
2680 printsel(const Arg *arg)
2681 {
2682 tdumpsel();
2683 }
2684
2685 void
2686 tdumpsel(void)
2687 {
2688 char *ptr;
2689
2690 if ((ptr = getsel())) {
2691 tprinter(ptr, strlen(ptr));
2692 free(ptr);
2693 }
2694 }
2695
2696 void
2697 tdumpline(int n)
2698 {
2699 char buf[UTF_SIZ];
2700 Glyph *bp, *end;
2701
2702 bp = &term.line[n][0];
2703 end = &bp[MIN(tlinelen(n), term.col) - 1];
2704 if (bp != end || bp->u != ' ') {
2705 for ( ;bp <= end; ++bp)
2706 tprinter(buf, utf8encode(bp->u, buf));
2707 }
2708 tprinter("\n", 1);
2709 }
2710
2711 void
2712 tdump(void)
2713 {
2714 int i;
2715
2716 for (i = 0; i < term.row; ++i)
2717 tdumpline(i);
2718 }
2719
2720 void
2721 tputtab(int n)
2722 {
2723 uint x = term.c.x;
2724
2725 if (n > 0) {
2726 while (x < term.col && n--)
2727 for (++x; x < term.col && !term.tabs[x]; ++x)
2728 /* nothing */ ;
2729 } else if (n < 0) {
2730 while (x > 0 && n++)
2731 for (--x; x > 0 && !term.tabs[x]; --x)
2732 /* nothing */ ;
2733 }
2734 term.c.x = LIMIT(x, 0, term.col-1);
2735 }
2736
2737 void
2738 techo(Rune u)
2739 {
2740 if (ISCONTROL(u)) { /* control code */
2741 if (u & 0x80) {
2742 u &= 0x7f;
2743 tputc('^');
2744 tputc('[');
2745 } else if (u != '\n' && u != '\r' && u != '\t') {
2746 u ^= 0x40;
2747 tputc('^');
2748 }
2749 }
2750 tputc(u);
2751 }
2752
2753 void
2754 tdefutf8(char ascii)
2755 {
2756 if (ascii == 'G')
2757 term.mode |= MODE_UTF8;
2758 else if (ascii == '@')
2759 term.mode &= ~MODE_UTF8;
2760 }
2761
2762 void
2763 tdeftran(char ascii)
2764 {
2765 static char cs[] = "0B";
2766 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2767 char *p;
2768
2769 if ((p = strchr(cs, ascii)) == NULL) {
2770 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2771 } else {
2772 term.trantbl[term.icharset] = vcs[p - cs];
2773 }
2774 }
2775
2776 void
2777 tdectest(char c)
2778 {
2779 int x, y;
2780
2781 if (c == '8') { /* DEC screen alignment test. */
2782 for (x = 0; x < term.col; ++x) {
2783 for (y = 0; y < term.row; ++y)
2784 tsetchar('E', &term.c.attr, x, y);
2785 }
2786 }
2787 }
2788
2789 void
2790 tstrsequence(uchar c)
2791 {
2792 strreset();
2793
2794 switch (c) {
2795 case 0x90: /* DCS -- Device Control String */
2796 c = 'P';
2797 term.esc |= ESC_DCS;
2798 break;
2799 case 0x9f: /* APC -- Application Program Command */
2800 c = '_';
2801 break;
2802 case 0x9e: /* PM -- Privacy Message */
2803 c = '^';
2804 break;
2805 case 0x9d: /* OSC -- Operating System Command */
2806 c = ']';
2807 break;
2808 }
2809 strescseq.type = c;
2810 term.esc |= ESC_STR;
2811 }
2812
2813 void
2814 tcontrolcode(uchar ascii)
2815 {
2816 switch (ascii) {
2817 case '\t': /* HT */
2818 tputtab(1);
2819 return;
2820 case '\b': /* BS */
2821 tmoveto(term.c.x-1, term.c.y);
2822 return;
2823 case '\r': /* CR */
2824 tmoveto(0, term.c.y);
2825 return;
2826 case '\f': /* LF */
2827 case '\v': /* VT */
2828 case '\n': /* LF */
2829 /* go to first col if the mode is set */
2830 tnewline(IS_SET(MODE_CRLF));
2831 return;
2832 case '\a': /* BEL */
2833 if (term.esc & ESC_STR_END) {
2834 /* backwards compatibility to xterm */
2835 strhandle();
2836 } else {
2837 if (!(xw.state & WIN_FOCUSED))
2838 xseturgency(1);
2839 if (bellvolume)
2840 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2841 }
2842 break;
2843 case '\033': /* ESC */
2844 csireset();
2845 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2846 term.esc |= ESC_START;
2847 return;
2848 case '\016': /* SO (LS1 -- Locking shift 1) */
2849 case '\017': /* SI (LS0 -- Locking shift 0) */
2850 term.charset = 1 - (ascii - '\016');
2851 return;
2852 case '\032': /* SUB */
2853 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2854 case '\030': /* CAN */
2855 csireset();
2856 break;
2857 case '\005': /* ENQ (IGNORED) */
2858 case '\000': /* NUL (IGNORED) */
2859 case '\021': /* XON (IGNORED) */
2860 case '\023': /* XOFF (IGNORED) */
2861 case 0177: /* DEL (IGNORED) */
2862 return;
2863 case 0x80: /* TODO: PAD */
2864 case 0x81: /* TODO: HOP */
2865 case 0x82: /* TODO: BPH */
2866 case 0x83: /* TODO: NBH */
2867 case 0x84: /* TODO: IND */
2868 break;
2869 case 0x85: /* NEL -- Next line */
2870 tnewline(1); /* always go to first col */
2871 break;
2872 case 0x86: /* TODO: SSA */
2873 case 0x87: /* TODO: ESA */
2874 break;
2875 case 0x88: /* HTS -- Horizontal tab stop */
2876 term.tabs[term.c.x] = 1;
2877 break;
2878 case 0x89: /* TODO: HTJ */
2879 case 0x8a: /* TODO: VTS */
2880 case 0x8b: /* TODO: PLD */
2881 case 0x8c: /* TODO: PLU */
2882 case 0x8d: /* TODO: RI */
2883 case 0x8e: /* TODO: SS2 */
2884 case 0x8f: /* TODO: SS3 */
2885 case 0x91: /* TODO: PU1 */
2886 case 0x92: /* TODO: PU2 */
2887 case 0x93: /* TODO: STS */
2888 case 0x94: /* TODO: CCH */
2889 case 0x95: /* TODO: MW */
2890 case 0x96: /* TODO: SPA */
2891 case 0x97: /* TODO: EPA */
2892 case 0x98: /* TODO: SOS */
2893 case 0x99: /* TODO: SGCI */
2894 break;
2895 case 0x9a: /* DECID -- Identify Terminal */
2896 ttywrite(vtiden, sizeof(vtiden) - 1);
2897 break;
2898 case 0x9b: /* TODO: CSI */
2899 case 0x9c: /* TODO: ST */
2900 break;
2901 case 0x90: /* DCS -- Device Control String */
2902 case 0x9d: /* OSC -- Operating System Command */
2903 case 0x9e: /* PM -- Privacy Message */
2904 case 0x9f: /* APC -- Application Program Command */
2905 tstrsequence(ascii);
2906 return;
2907 }
2908 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2909 term.esc &= ~(ESC_STR_END|ESC_STR);
2910 }
2911
2912 /*
2913 * returns 1 when the sequence is finished and it hasn't to read
2914 * more characters for this sequence, otherwise 0
2915 */
2916 int
2917 eschandle(uchar ascii)
2918 {
2919 switch (ascii) {
2920 case '[':
2921 term.esc |= ESC_CSI;
2922 return 0;
2923 case '#':
2924 term.esc |= ESC_TEST;
2925 return 0;
2926 case '%':
2927 term.esc |= ESC_UTF8;
2928 return 0;
2929 case 'P': /* DCS -- Device Control String */
2930 case '_': /* APC -- Application Program Command */
2931 case '^': /* PM -- Privacy Message */
2932 case ']': /* OSC -- Operating System Command */
2933 case 'k': /* old title set compatibility */
2934 tstrsequence(ascii);
2935 return 0;
2936 case 'n': /* LS2 -- Locking shift 2 */
2937 case 'o': /* LS3 -- Locking shift 3 */
2938 term.charset = 2 + (ascii - 'n');
2939 break;
2940 case '(': /* GZD4 -- set primary charset G0 */
2941 case ')': /* G1D4 -- set secondary charset G1 */
2942 case '*': /* G2D4 -- set tertiary charset G2 */
2943 case '+': /* G3D4 -- set quaternary charset G3 */
2944 term.icharset = ascii - '(';
2945 term.esc |= ESC_ALTCHARSET;
2946 return 0;
2947 case 'D': /* IND -- Linefeed */
2948 if (term.c.y == term.bot) {
2949 tscrollup(term.top, 1);
2950 } else {
2951 tmoveto(term.c.x, term.c.y+1);
2952 }
2953 break;
2954 case 'E': /* NEL -- Next line */
2955 tnewline(1); /* always go to first col */
2956 break;
2957 case 'H': /* HTS -- Horizontal tab stop */
2958 term.tabs[term.c.x] = 1;
2959 break;
2960 case 'M': /* RI -- Reverse index */
2961 if (term.c.y == term.top) {
2962 tscrolldown(term.top, 1);
2963 } else {
2964 tmoveto(term.c.x, term.c.y-1);
2965 }
2966 break;
2967 case 'Z': /* DECID -- Identify Terminal */
2968 ttywrite(vtiden, sizeof(vtiden) - 1);
2969 break;
2970 case 'c': /* RIS -- Reset to inital state */
2971 treset();
2972 xresettitle();
2973 xloadcols();
2974 break;
2975 case '=': /* DECPAM -- Application keypad */
2976 term.mode |= MODE_APPKEYPAD;
2977 break;
2978 case '>': /* DECPNM -- Normal keypad */
2979 term.mode &= ~MODE_APPKEYPAD;
2980 break;
2981 case '7': /* DECSC -- Save Cursor */
2982 tcursor(CURSOR_SAVE);
2983 break;
2984 case '8': /* DECRC -- Restore Cursor */
2985 tcursor(CURSOR_LOAD);
2986 break;
2987 case '\\': /* ST -- String Terminator */
2988 if (term.esc & ESC_STR_END)
2989 strhandle();
2990 break;
2991 default:
2992 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2993 (uchar) ascii, isprint(ascii)? ascii:'.');
2994 break;
2995 }
2996 return 1;
2997 }
2998
2999 void
3000 externalpipe(const Arg *arg)
3001 {
3002 int to[2]; /* 0 = read, 1 = write */
3003 pid_t child;
3004 int n;
3005 void (*oldsigpipe)(int);
3006 char buf[UTF_SIZ];
3007 Glyph *bp, *end;
3008
3009 if(pipe(to) == -1)
3010 return;
3011
3012 /* sigchld() handles this */
3013 switch(child = fork()){
3014 case -1:
3015 close(to[0]), close(to[1]);
3016 return;
3017 case 0:
3018 /* child */
3019 close(to[1]);
3020 dup2(to[0], STDIN_FILENO); /* 0<&to */
3021 close(to[0]);
3022 execvp(
3023 "sh",
3024 (char *const []){
3025 "/bin/sh",
3026 "-c",
3027 (char *)arg->v,
3028 0
3029 });
3030 exit(127);
3031 }
3032
3033 /* parent */
3034 close(to[0]);
3035 /* ignore sigpipe for now, in case child exits early */
3036 oldsigpipe = signal(SIGPIPE, SIG_IGN);
3037
3038 for(n = 0; n < term.row; n++){
3039 bp = &term.line[n][0];
3040 end = &bp[MIN(tlinelen(n), term.col) - 1];
3041 if(bp != end || bp->u != ' ')
3042 for(; bp <= end; ++bp)
3043 if(xwrite(to[1], buf, utf8encode(bp->u, buf)) < 0)
3044 break;
3045 if(xwrite(to[1], "\n", 1) < 0)
3046 break;
3047 }
3048
3049 close(to[1]);
3050
3051 /* restore */
3052 signal(SIGPIPE, oldsigpipe);
3053 }
3054
3055 void
3056 tputc(Rune u)
3057 {
3058 char c[UTF_SIZ];
3059 int control;
3060 int width, len;
3061 Glyph *gp;
3062
3063 control = ISCONTROL(u);
3064 if (!IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
3065 c[0] = u;
3066 width = len = 1;
3067 } else {
3068 len = utf8encode(u, c);
3069 if (!control && (width = wcwidth(u)) == -1) {
3070 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
3071 width = 1;
3072 }
3073 }
3074
3075 if (IS_SET(MODE_PRINT))
3076 tprinter(c, len);
3077
3078 /*
3079 * STR sequence must be checked before anything else
3080 * because it uses all following characters until it
3081 * receives a ESC, a SUB, a ST or any other C1 control
3082 * character.
3083 */
3084 if (term.esc & ESC_STR) {
3085 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
3086 ISCONTROLC1(u)) {
3087 term.esc &= ~(ESC_START|ESC_STR|ESC_DCS);
3088 if (IS_SET(MODE_SIXEL)) {
3089 /* TODO: render sixel */;
3090 term.mode &= ~MODE_SIXEL;
3091 return;
3092 }
3093 term.esc |= ESC_STR_END;
3094 goto check_control_code;
3095 }
3096
3097
3098 if (IS_SET(MODE_SIXEL)) {
3099 /* TODO: implement sixel mode */
3100 return;
3101 }
3102 if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
3103 term.mode |= MODE_SIXEL;
3104
3105 if (strescseq.len+len >= sizeof(strescseq.buf)-1) {
3106 /*
3107 * Here is a bug in terminals. If the user never sends
3108 * some code to stop the str or esc command, then st
3109 * will stop responding. But this is better than
3110 * silently failing with unknown characters. At least
3111 * then users will report back.
3112 *
3113 * In the case users ever get fixed, here is the code:
3114 */
3115 /*
3116 * term.esc = 0;
3117 * strhandle();
3118 */
3119 return;
3120 }
3121
3122 memmove(&strescseq.buf[strescseq.len], c, len);
3123 strescseq.len += len;
3124 return;
3125 }
3126
3127 check_control_code:
3128 /*
3129 * Actions of control codes must be performed as soon they arrive
3130 * because they can be embedded inside a control sequence, and
3131 * they must not cause conflicts with sequences.
3132 */
3133 if (control) {
3134 tcontrolcode(u);
3135 /*
3136 * control codes are not shown ever
3137 */
3138 return;
3139 } else if (term.esc & ESC_START) {
3140 if (term.esc & ESC_CSI) {
3141 csiescseq.buf[csiescseq.len++] = u;
3142 if (BETWEEN(u, 0x40, 0x7E)
3143 || csiescseq.len >= \
3144 sizeof(csiescseq.buf)-1) {
3145 term.esc = 0;
3146 csiparse();
3147 csihandle();
3148 }
3149 return;
3150 } else if (term.esc & ESC_UTF8) {
3151 tdefutf8(u);
3152 } else if (term.esc & ESC_ALTCHARSET) {
3153 tdeftran(u);
3154 } else if (term.esc & ESC_TEST) {
3155 tdectest(u);
3156 } else {
3157 if (!eschandle(u))
3158 return;
3159 /* sequence already finished */
3160 }
3161 term.esc = 0;
3162 /*
3163 * All characters which form part of a sequence are not
3164 * printed
3165 */
3166 return;
3167 }
3168 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
3169 selclear(NULL);
3170
3171 gp = &term.line[term.c.y][term.c.x];
3172 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
3173 gp->mode |= ATTR_WRAP;
3174 tnewline(1);
3175 gp = &term.line[term.c.y][term.c.x];
3176 }
3177
3178 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
3179 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
3180
3181 if (term.c.x+width > term.col) {
3182 tnewline(1);
3183 gp = &term.line[term.c.y][term.c.x];
3184 }
3185
3186 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
3187
3188 if (width == 2) {
3189 gp->mode |= ATTR_WIDE;
3190 if (term.c.x+1 < term.col) {
3191 gp[1].u = '\0';
3192 gp[1].mode = ATTR_WDUMMY;
3193 }
3194 }
3195 if (term.c.x+width < term.col) {
3196 tmoveto(term.c.x+width, term.c.y);
3197 } else {
3198 term.c.state |= CURSOR_WRAPNEXT;
3199 }
3200 }
3201
3202 void
3203 tresize(int col, int row)
3204 {
3205 int i;
3206 int minrow = MIN(row, term.row);
3207 int mincol = MIN(col, term.col);
3208 int *bp;
3209 TCursor c;
3210
3211 if (col < 1 || row < 1) {
3212 fprintf(stderr,
3213 "tresize: error resizing to %dx%d\n", col, row);
3214 return;
3215 }
3216
3217 /*
3218 * slide screen to keep cursor where we expect it -
3219 * tscrollup would work here, but we can optimize to
3220 * memmove because we're freeing the earlier lines
3221 */
3222 for (i = 0; i <= term.c.y - row; i++) {
3223 free(term.line[i]);
3224 free(term.alt[i]);
3225 }
3226 /* ensure that both src and dst are not NULL */
3227 if (i > 0) {
3228 memmove(term.line, term.line + i, row * sizeof(Line));
3229 memmove(term.alt, term.alt + i, row * sizeof(Line));
3230 }
3231 for (i += row; i < term.row; i++) {
3232 free(term.line[i]);
3233 free(term.alt[i]);
3234 }
3235
3236 /* resize to new width */
3237 term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
3238
3239 /* resize to new height */
3240 term.line = xrealloc(term.line, row * sizeof(Line));
3241 term.alt = xrealloc(term.alt, row * sizeof(Line));
3242 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
3243 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
3244
3245 /* resize each row to new width, zero-pad if needed */
3246 for (i = 0; i < minrow; i++) {
3247 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
3248 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
3249 }
3250
3251 /* allocate any new rows */
3252 for (/* i == minrow */; i < row; i++) {
3253 term.line[i] = xmalloc(col * sizeof(Glyph));
3254 term.alt[i] = xmalloc(col * sizeof(Glyph));
3255 }
3256 if (col > term.col) {
3257 bp = term.tabs + term.col;
3258
3259 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
3260 while (--bp > term.tabs && !*bp)
3261 /* nothing */ ;
3262 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
3263 *bp = 1;
3264 }
3265 /* update terminal size */
3266 term.col = col;
3267 term.row = row;
3268 /* reset scrolling region */
3269 tsetscroll(0, row-1);
3270 /* make use of the LIMIT in tmoveto */
3271 tmoveto(term.c.x, term.c.y);
3272 /* Clearing both screens (it makes dirty all lines) */
3273 c = term.c;
3274 for (i = 0; i < 2; i++) {
3275 if (mincol < col && 0 < minrow) {
3276 tclearregion(mincol, 0, col - 1, minrow - 1);
3277 }
3278 if (0 < col && minrow < row) {
3279 tclearregion(0, minrow, col - 1, row - 1);
3280 }
3281 tswapscreen();
3282 tcursor(CURSOR_LOAD);
3283 }
3284 term.c = c;
3285 }
3286
3287 void
3288 xresize(int col, int row)
3289 {
3290 xw.tw = MAX(1, col * xw.cw);
3291 xw.th = MAX(1, row * xw.ch);
3292
3293 XFreePixmap(xw.dpy, xw.buf);
3294 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3295 DefaultDepth(xw.dpy, xw.scr));
3296 XftDrawChange(xw.draw, xw.buf);
3297 xclear(0, 0, xw.w, xw.h);
3298 }
3299
3300 ushort
3301 sixd_to_16bit(int x)
3302 {
3303 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
3304 }
3305
3306 int
3307 xloadcolor(int i, const char *name, Color *ncolor)
3308 {
3309 XRenderColor color = { .alpha = 0xffff };
3310
3311 if (!name) {
3312 if (BETWEEN(i, 16, 255)) { /* 256 color */
3313 if (i < 6*6*6+16) { /* same colors as xterm */
3314 color.red = sixd_to_16bit( ((i-16)/36)%6 );
3315 color.green = sixd_to_16bit( ((i-16)/6) %6 );
3316 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
3317 } else { /* greyscale */
3318 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
3319 color.green = color.blue = color.red;
3320 }
3321 return XftColorAllocValue(xw.dpy, xw.vis,
3322 xw.cmap, &color, ncolor);
3323 } else
3324 name = colorname[i];
3325 }
3326
3327 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
3328 }
3329
3330 void
3331 xloadcols(void)
3332 {
3333 int i;
3334 static int loaded;
3335 Color *cp;
3336
3337 if (loaded) {
3338 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
3339 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
3340 }
3341
3342 for (i = 0; i < LEN(dc.col); i++)
3343 if (!xloadcolor(i, NULL, &dc.col[i])) {
3344 if (colorname[i])
3345 die("Could not allocate color '%s'\n", colorname[i]);
3346 else
3347 die("Could not allocate color %d\n", i);
3348 }
3349 loaded = 1;
3350 }
3351
3352 int
3353 xsetcolorname(int x, const char *name)
3354 {
3355 Color ncolor;
3356
3357 if (!BETWEEN(x, 0, LEN(dc.col)))
3358 return 1;
3359
3360
3361 if (!xloadcolor(x, name, &ncolor))
3362 return 1;
3363
3364 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
3365 dc.col[x] = ncolor;
3366
3367 return 0;
3368 }
3369
3370 /*
3371 * Absolute coordinates.
3372 */
3373 void
3374 xclear(int x1, int y1, int x2, int y2)
3375 {
3376 XftDrawRect(xw.draw,
3377 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
3378 x1, y1, x2-x1, y2-y1);
3379 }
3380
3381 void
3382 xhints(void)
3383 {
3384 XClassHint class = {opt_name ? opt_name : termname,
3385 opt_class ? opt_class : termname};
3386 XWMHints wm = {.flags = InputHint, .input = 1};
3387 XSizeHints *sizeh = NULL;
3388
3389 sizeh = XAllocSizeHints();
3390
3391 sizeh->flags = PSize | PResizeInc | PBaseSize;
3392 sizeh->height = xw.h;
3393 sizeh->width = xw.w;
3394 sizeh->height_inc = xw.ch;
3395 sizeh->width_inc = xw.cw;
3396 sizeh->base_height = 2 * borderpx;
3397 sizeh->base_width = 2 * borderpx;
3398 if (xw.isfixed) {
3399 sizeh->flags |= PMaxSize | PMinSize;
3400 sizeh->min_width = sizeh->max_width = xw.w;
3401 sizeh->min_height = sizeh->max_height = xw.h;
3402 }
3403 if (xw.gm & (XValue|YValue)) {
3404 sizeh->flags |= USPosition | PWinGravity;
3405 sizeh->x = xw.l;
3406 sizeh->y = xw.t;
3407 sizeh->win_gravity = xgeommasktogravity(xw.gm);
3408 }
3409
3410 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
3411 &class);
3412 XFree(sizeh);
3413 }
3414
3415 int
3416 xgeommasktogravity(int mask)
3417 {
3418 switch (mask & (XNegative|YNegative)) {
3419 case 0:
3420 return NorthWestGravity;
3421 case XNegative:
3422 return NorthEastGravity;
3423 case YNegative:
3424 return SouthWestGravity;
3425 }
3426
3427 return SouthEastGravity;
3428 }
3429
3430 int
3431 xloadfont(Font *f, FcPattern *pattern)
3432 {
3433 FcPattern *configured;
3434 FcPattern *match;
3435 FcResult result;
3436 XGlyphInfo extents;
3437 int wantattr, haveattr;
3438
3439 /*
3440 * Manually configure instead of calling XftMatchFont
3441 * so that we can use the configured pattern for
3442 * "missing glyph" lookups.
3443 */
3444 configured = FcPatternDuplicate(pattern);
3445 if (!configured)
3446 return 1;
3447
3448 FcConfigSubstitute(NULL, configured, FcMatchPattern);
3449 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
3450
3451 match = FcFontMatch(NULL, configured, &result);
3452 if (!match) {
3453 FcPatternDestroy(configured);
3454 return 1;
3455 }
3456
3457 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3458 FcPatternDestroy(configured);
3459 FcPatternDestroy(match);
3460 return 1;
3461 }
3462
3463 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
3464 XftResultMatch)) {
3465 /*
3466 * Check if xft was unable to find a font with the appropriate
3467 * slant but gave us one anyway. Try to mitigate.
3468 */
3469 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
3470 &haveattr) != XftResultMatch) || haveattr < wantattr) {
3471 f->badslant = 1;
3472 fputs("st: font slant does not match\n", stderr);
3473 }
3474 }
3475
3476 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
3477 XftResultMatch)) {
3478 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
3479 &haveattr) != XftResultMatch) || haveattr != wantattr) {
3480 f->badweight = 1;
3481 fputs("st: font weight does not match\n", stderr);
3482 }
3483 }
3484
3485 XftTextExtentsUtf8(xw.dpy, f->match,
3486 (const FcChar8 *) ascii_printable,
3487 strlen(ascii_printable), &extents);
3488
3489 f->set = NULL;
3490 f->pattern = configured;
3491
3492 f->ascent = f->match->ascent;
3493 f->descent = f->match->descent;
3494 f->lbearing = 0;
3495 f->rbearing = f->match->max_advance_width;
3496
3497 f->height = f->ascent + f->descent;
3498 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
3499
3500 return 0;
3501 }
3502
3503 void
3504 xloadfonts(char *fontstr, double fontsize)
3505 {
3506 FcPattern *pattern;
3507 double fontval;
3508 float ceilf(float);
3509
3510 if (fontstr[0] == '-') {
3511 pattern = XftXlfdParse(fontstr, False, False);
3512 } else {
3513 pattern = FcNameParse((FcChar8 *)fontstr);
3514 }
3515
3516 if (!pattern)
3517 die("st: can't open font %s\n", fontstr);
3518
3519 if (fontsize > 1) {
3520 FcPatternDel(pattern, FC_PIXEL_SIZE);
3521 FcPatternDel(pattern, FC_SIZE);
3522 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3523 usedfontsize = fontsize;
3524 } else {
3525 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
3526 FcResultMatch) {
3527 usedfontsize = fontval;
3528 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
3529 FcResultMatch) {
3530 usedfontsize = -1;
3531 } else {
3532 /*
3533 * Default font size is 12, if none given. This is to
3534 * have a known usedfontsize value.
3535 */
3536 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3537 usedfontsize = 12;
3538 }
3539 defaultfontsize = usedfontsize;
3540 }
3541
3542 if (xloadfont(&dc.font, pattern))
3543 die("st: can't open font %s\n", fontstr);
3544
3545 if (usedfontsize < 0) {
3546 FcPatternGetDouble(dc.font.match->pattern,
3547 FC_PIXEL_SIZE, 0, &fontval);
3548 usedfontsize = fontval;
3549 if (fontsize == 0)
3550 defaultfontsize = fontval;
3551 }
3552
3553 /* Setting character width and height. */
3554 xw.cw = ceilf(dc.font.width * cwscale);
3555 xw.ch = ceilf(dc.font.height * chscale);
3556
3557 FcPatternDel(pattern, FC_SLANT);
3558 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3559 if (xloadfont(&dc.ifont, pattern))
3560 die("st: can't open font %s\n", fontstr);
3561
3562 FcPatternDel(pattern, FC_WEIGHT);
3563 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3564 if (xloadfont(&dc.ibfont, pattern))
3565 die("st: can't open font %s\n", fontstr);
3566
3567 FcPatternDel(pattern, FC_SLANT);
3568 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3569 if (xloadfont(&dc.bfont, pattern))
3570 die("st: can't open font %s\n", fontstr);
3571
3572 FcPatternDestroy(pattern);
3573 }
3574
3575 void
3576 xunloadfont(Font *f)
3577 {
3578 XftFontClose(xw.dpy, f->match);
3579 FcPatternDestroy(f->pattern);
3580 if (f->set)
3581 FcFontSetDestroy(f->set);
3582 }
3583
3584 void
3585 xunloadfonts(void)
3586 {
3587 /* Free the loaded fonts in the font cache. */
3588 while (frclen > 0)
3589 XftFontClose(xw.dpy, frc[--frclen].font);
3590
3591 xunloadfont(&dc.font);
3592 xunloadfont(&dc.bfont);
3593 xunloadfont(&dc.ifont);
3594 xunloadfont(&dc.ibfont);
3595 }
3596
3597 void
3598 xzoom(const Arg *arg)
3599 {
3600 Arg larg;
3601
3602 larg.f = usedfontsize + arg->f;
3603 xzoomabs(&larg);
3604 }
3605
3606 void
3607 xzoomabs(const Arg *arg)
3608 {
3609 xunloadfonts();
3610 xloadfonts(usedfont, arg->f);
3611 cresize(0, 0);
3612 ttyresize();
3613 redraw();
3614 xhints();
3615 }
3616
3617 void
3618 xzoomreset(const Arg *arg)
3619 {
3620 Arg larg;
3621
3622 if (defaultfontsize > 0) {
3623 larg.f = defaultfontsize;
3624 xzoomabs(&larg);
3625 }
3626 }
3627
3628 void
3629 xinit(void)
3630 {
3631 XGCValues gcvalues;
3632 Cursor cursor;
3633 Window parent;
3634 pid_t thispid = getpid();
3635 XColor xmousefg, xmousebg;
3636
3637 if (!(xw.dpy = XOpenDisplay(NULL)))
3638 die("Can't open display\n");
3639 xw.scr = XDefaultScreen(xw.dpy);
3640 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3641
3642 /* font */
3643 if (!FcInit())
3644 die("Could not init fontconfig.\n");
3645
3646 usedfont = (opt_font == NULL)? font : opt_font;
3647 xloadfonts(usedfont, 0);
3648
3649 /* colors */
3650 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3651 xloadcols();
3652
3653 /* adjust fixed window geometry */
3654 xw.w = 2 * borderpx + term.col * xw.cw;
3655 xw.h = 2 * borderpx + term.row * xw.ch;
3656 if (xw.gm & XNegative)
3657 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3658 if (xw.gm & YNegative)
3659 xw.t += DisplayHeight(xw.dpy, xw.scr) - xw.h - 2;
3660
3661 /* Events */
3662 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3663 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3664 xw.attrs.bit_gravity = NorthWestGravity;
3665 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3666 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3667 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3668 xw.attrs.colormap = xw.cmap;
3669
3670 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
3671 parent = XRootWindow(xw.dpy, xw.scr);
3672 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3673 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3674 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3675 | CWEventMask | CWColormap, &xw.attrs);
3676
3677 memset(&gcvalues, 0, sizeof(gcvalues));
3678 gcvalues.graphics_exposures = False;
3679 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3680 &gcvalues);
3681 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3682 DefaultDepth(xw.dpy, xw.scr));
3683 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3684 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3685
3686 /* Xft rendering context */
3687 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3688
3689 /* input methods */
3690 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3691 XSetLocaleModifiers("@im=local");
3692 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3693 XSetLocaleModifiers("@im=");
3694 if ((xw.xim = XOpenIM(xw.dpy,
3695 NULL, NULL, NULL)) == NULL) {
3696 die("XOpenIM failed. Could not open input"
3697 " device.\n");
3698 }
3699 }
3700 }
3701 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3702 | XIMStatusNothing, XNClientWindow, xw.win,
3703 XNFocusWindow, xw.win, NULL);
3704 if (xw.xic == NULL)
3705 die("XCreateIC failed. Could not obtain input method.\n");
3706
3707 /* white cursor, black outline */
3708 cursor = XCreateFontCursor(xw.dpy, mouseshape);
3709 XDefineCursor(xw.dpy, xw.win, cursor);
3710
3711 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
3712 xmousefg.red = 0xffff;
3713 xmousefg.green = 0xffff;
3714 xmousefg.blue = 0xffff;
3715 }
3716
3717 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
3718 xmousebg.red = 0x0000;
3719 xmousebg.green = 0x0000;
3720 xmousebg.blue = 0x0000;
3721 }
3722
3723 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
3724
3725 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3726 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3727 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3728 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3729
3730 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3731 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3732 PropModeReplace, (uchar *)&thispid, 1);
3733
3734 xresettitle();
3735 XMapWindow(xw.dpy, xw.win);
3736 xhints();
3737 XSync(xw.dpy, False);
3738 }
3739
3740 int
3741 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
3742 {
3743 float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
3744 ushort mode, prevmode = USHRT_MAX;
3745 Font *font = &dc.font;
3746 int frcflags = FRC_NORMAL;
3747 float runewidth = xw.cw;
3748 Rune rune;
3749 FT_UInt glyphidx;
3750 FcResult fcres;
3751 FcPattern *fcpattern, *fontpattern;
3752 FcFontSet *fcsets[] = { NULL };
3753 FcCharSet *fccharset;
3754 int i, f, numspecs = 0;
3755
3756 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
3757 /* Fetch rune and mode for current glyph. */
3758 rune = glyphs[i].u;
3759 mode = glyphs[i].mode;
3760
3761 /* Skip dummy wide-character spacing. */
3762 if (mode == ATTR_WDUMMY)
3763 continue;
3764
3765 /* Determine font for glyph if different from previous glyph. */
3766 if (prevmode != mode) {
3767 prevmode = mode;
3768 font = &dc.font;
3769 frcflags = FRC_NORMAL;
3770 runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
3771 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
3772 font = &dc.ibfont;
3773 frcflags = FRC_ITALICBOLD;
3774 } else if (mode & ATTR_ITALIC) {
3775 font = &dc.ifont;
3776 frcflags = FRC_ITALIC;
3777 } else if (mode & ATTR_BOLD) {
3778 font = &dc.bfont;
3779 frcflags = FRC_BOLD;
3780 }
3781 yp = winy + font->ascent;
3782 }
3783
3784 /* Lookup character index with default font. */
3785 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
3786 if (glyphidx) {
3787 specs[numspecs].font = font->match;
3788 specs[numspecs].glyph = glyphidx;
3789 specs[numspecs].x = (short)xp;
3790 specs[numspecs].y = (short)yp;
3791 xp += runewidth;
3792 numspecs++;
3793 continue;
3794 }
3795
3796 /* Fallback on font cache, search the font cache for match. */
3797 for (f = 0; f < frclen; f++) {
3798 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
3799 /* Everything correct. */
3800 if (glyphidx && frc[f].flags == frcflags)
3801 break;
3802 /* We got a default font for a not found glyph. */
3803 if (!glyphidx && frc[f].flags == frcflags
3804 && frc[f].unicodep == rune) {
3805 break;
3806 }
3807 }
3808
3809 /* Nothing was found. Use fontconfig to find matching font. */
3810 if (f >= frclen) {
3811 if (!font->set)
3812 font->set = FcFontSort(0, font->pattern,
3813 1, 0, &fcres);
3814 fcsets[0] = font->set;
3815
3816 /*
3817 * Nothing was found in the cache. Now use
3818 * some dozen of Fontconfig calls to get the
3819 * font for one single character.
3820 *
3821 * Xft and fontconfig are design failures.
3822 */
3823 fcpattern = FcPatternDuplicate(font->pattern);
3824 fccharset = FcCharSetCreate();
3825
3826 FcCharSetAddChar(fccharset, rune);
3827 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3828 fccharset);
3829 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
3830
3831 FcConfigSubstitute(0, fcpattern,
3832 FcMatchPattern);
3833 FcDefaultSubstitute(fcpattern);
3834
3835 fontpattern = FcFontSetMatch(0, fcsets, 1,
3836 fcpattern, &fcres);
3837
3838 /*
3839 * Overwrite or create the new cache entry.
3840 */
3841 if (frclen >= LEN(frc)) {
3842 frclen = LEN(frc) - 1;
3843 XftFontClose(xw.dpy, frc[frclen].font);
3844 frc[frclen].unicodep = 0;
3845 }
3846
3847 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3848 fontpattern);
3849 frc[frclen].flags = frcflags;
3850 frc[frclen].unicodep = rune;
3851
3852 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
3853
3854 f = frclen;
3855 frclen++;
3856
3857 FcPatternDestroy(fcpattern);
3858 FcCharSetDestroy(fccharset);
3859 }
3860
3861 specs[numspecs].font = frc[f].font;
3862 specs[numspecs].glyph = glyphidx;
3863 specs[numspecs].x = (short)xp;
3864 specs[numspecs].y = (short)yp;
3865 xp += runewidth;
3866 numspecs++;
3867 }
3868
3869 return numspecs;
3870 }
3871
3872 void
3873 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
3874 {
3875 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
3876 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3877 width = charlen * xw.cw;
3878 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3879 XRenderColor colfg, colbg;
3880 XRectangle r;
3881
3882 /* Fallback on color display for attributes not supported by the font */
3883 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
3884 if (dc.ibfont.badslant || dc.ibfont.badweight)
3885 base.fg = defaultattr;
3886 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
3887 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
3888 base.fg = defaultattr;
3889 }
3890
3891 if (IS_TRUECOL(base.fg)) {
3892 colfg.alpha = 0xffff;
3893 colfg.red = TRUERED(base.fg);
3894 colfg.green = TRUEGREEN(base.fg);
3895 colfg.blue = TRUEBLUE(base.fg);
3896 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3897 fg = &truefg;
3898 } else {
3899 fg = &dc.col[base.fg];
3900 }
3901
3902 if (IS_TRUECOL(base.bg)) {
3903 colbg.alpha = 0xffff;
3904 colbg.green = TRUEGREEN(base.bg);
3905 colbg.red = TRUERED(base.bg);
3906 colbg.blue = TRUEBLUE(base.bg);
3907 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3908 bg = &truebg;
3909 } else {
3910 bg = &dc.col[base.bg];
3911 }
3912
3913 /* Change basic system colors [0-7] to bright system colors [8-15] */
3914 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
3915 fg = &dc.col[base.fg + 8];
3916
3917 if (IS_SET(MODE_REVERSE)) {
3918 if (fg == &dc.col[defaultfg]) {
3919 fg = &dc.col[defaultbg];
3920 } else {
3921 colfg.red = ~fg->color.red;
3922 colfg.green = ~fg->color.green;
3923 colfg.blue = ~fg->color.blue;
3924 colfg.alpha = fg->color.alpha;
3925 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3926 &revfg);
3927 fg = &revfg;
3928 }
3929
3930 if (bg == &dc.col[defaultbg]) {
3931 bg = &dc.col[defaultfg];
3932 } else {
3933 colbg.red = ~bg->color.red;
3934 colbg.green = ~bg->color.green;
3935 colbg.blue = ~bg->color.blue;
3936 colbg.alpha = bg->color.alpha;
3937 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3938 &revbg);
3939 bg = &revbg;
3940 }
3941 }
3942
3943 if (base.mode & ATTR_REVERSE) {
3944 temp = fg;
3945 fg = bg;
3946 bg = temp;
3947 }
3948
3949 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
3950 colfg.red = fg->color.red / 2;
3951 colfg.green = fg->color.green / 2;
3952 colfg.blue = fg->color.blue / 2;
3953 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3954 fg = &revfg;
3955 }
3956
3957 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3958 fg = bg;
3959
3960 if (base.mode & ATTR_INVISIBLE)
3961 fg = bg;
3962
3963 /* Intelligent cleaning up of the borders. */
3964 if (x == 0) {
3965 xclear(0, (y == 0)? 0 : winy, borderpx,
3966 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3967 }
3968 if (x + charlen >= term.col) {
3969 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3970 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3971 }
3972 if (y == 0)
3973 xclear(winx, 0, winx + width, borderpx);
3974 if (y == term.row-1)
3975 xclear(winx, winy + xw.ch, winx + width, xw.h);
3976
3977 /* Clean up the region we want to draw to. */
3978 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3979
3980 /* Set the clip region because Xft is sometimes dirty. */
3981 r.x = 0;
3982 r.y = 0;
3983 r.height = xw.ch;
3984 r.width = width;
3985 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3986
3987 /* Render the glyphs. */
3988 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
3989
3990 /* Render underline and strikethrough. */
3991 if (base.mode & ATTR_UNDERLINE) {
3992 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
3993 width, 1);
3994 }
3995
3996 if (base.mode & ATTR_STRUCK) {
3997 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
3998 width, 1);
3999 }
4000
4001 /* Reset clip to none. */
4002 XftDrawSetClip(xw.draw, 0);
4003 }
4004
4005 void
4006 xdrawglyph(Glyph g, int x, int y)
4007 {
4008 int numspecs;
4009 XftGlyphFontSpec spec;
4010
4011 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
4012 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
4013 }
4014
4015 void
4016 xdrawcursor(void)
4017 {
4018 static int oldx = 0, oldy = 0;
4019 int curx;
4020 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
4021 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
4022 Color drawcol;
4023
4024 LIMIT(oldx, 0, term.col-1);
4025 LIMIT(oldy, 0, term.row-1);
4026
4027 curx = term.c.x;
4028
4029 /* adjust position if in dummy */
4030 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
4031 oldx--;
4032 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
4033 curx--;
4034
4035 /* remove the old cursor */
4036 og = term.line[oldy][oldx];
4037 if (ena_sel && selected(oldx, oldy))
4038 og.mode ^= ATTR_REVERSE;
4039 xdrawglyph(og, oldx, oldy);
4040
4041 g.u = term.line[term.c.y][term.c.x].u;
4042
4043 /*
4044 * Select the right color for the right mode.
4045 */
4046 if (IS_SET(MODE_REVERSE)) {
4047 g.mode |= ATTR_REVERSE;
4048 g.bg = defaultfg;
4049 if (ena_sel && selected(term.c.x, term.c.y)) {
4050 drawcol = dc.col[defaultcs];
4051 g.fg = defaultrcs;
4052 } else {
4053 drawcol = dc.col[defaultrcs];
4054 g.fg = defaultcs;
4055 }
4056 } else {
4057 if (ena_sel && selected(term.c.x, term.c.y)) {
4058 drawcol = dc.col[defaultrcs];
4059 g.fg = defaultfg;
4060 g.bg = defaultrcs;
4061 } else {
4062 drawcol = dc.col[defaultcs];
4063 }
4064 }
4065
4066 if (IS_SET(MODE_HIDE))
4067 return;
4068
4069 /* draw the new one */
4070 if (xw.state & WIN_FOCUSED) {
4071 switch (xw.cursor) {
4072 case 7: /* st extension: snowman */
4073 utf8decode("☃", &g.u, UTF_SIZ);
4074 case 0: /* Blinking Block */
4075 case 1: /* Blinking Block (Default) */
4076 case 2: /* Steady Block */
4077 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
4078 xdrawglyph(g, term.c.x, term.c.y);
4079 break;
4080 case 3: /* Blinking Underline */
4081 case 4: /* Steady Underline */
4082 XftDrawRect(xw.draw, &drawcol,
4083 borderpx + curx * xw.cw,
4084 borderpx + (term.c.y + 1) * xw.ch - \
4085 cursorthickness,
4086 xw.cw, cursorthickness);
4087 break;
4088 case 5: /* Blinking bar */
4089 case 6: /* Steady bar */
4090 XftDrawRect(xw.draw, &drawcol,
4091 borderpx + curx * xw.cw,
4092 borderpx + term.c.y * xw.ch,
4093 cursorthickness, xw.ch);
4094 break;
4095 }
4096 } else {
4097 XftDrawRect(xw.draw, &drawcol,
4098 borderpx + curx * xw.cw,
4099 borderpx + term.c.y * xw.ch,
4100 xw.cw - 1, 1);
4101 XftDrawRect(xw.draw, &drawcol,
4102 borderpx + curx * xw.cw,
4103 borderpx + term.c.y * xw.ch,
4104 1, xw.ch - 1);
4105 XftDrawRect(xw.draw, &drawcol,
4106 borderpx + (curx + 1) * xw.cw - 1,
4107 borderpx + term.c.y * xw.ch,
4108 1, xw.ch - 1);
4109 XftDrawRect(xw.draw, &drawcol,
4110 borderpx + curx * xw.cw,
4111 borderpx + (term.c.y + 1) * xw.ch - 1,
4112 xw.cw, 1);
4113 }
4114 oldx = curx, oldy = term.c.y;
4115 }
4116
4117
4118 void
4119 xsettitle(char *p)
4120 {
4121 XTextProperty prop;
4122
4123 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
4124 &prop);
4125 XSetWMName(xw.dpy, xw.win, &prop);
4126 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
4127 XFree(prop.value);
4128 }
4129
4130 void
4131 xresettitle(void)
4132 {
4133 xsettitle(opt_title ? opt_title : "st");
4134 }
4135
4136 void
4137 redraw(void)
4138 {
4139 tfulldirt();
4140 draw();
4141 }
4142
4143 void
4144 draw(void)
4145 {
4146 drawregion(0, 0, term.col, term.row);
4147 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
4148 xw.h, 0, 0);
4149 XSetForeground(xw.dpy, dc.gc,
4150 dc.col[IS_SET(MODE_REVERSE)?
4151 defaultfg : defaultbg].pixel);
4152 }
4153
4154 void
4155 drawregion(int x1, int y1, int x2, int y2)
4156 {
4157 int i, x, y, ox, numspecs;
4158 Glyph base, new;
4159 XftGlyphFontSpec *specs;
4160 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
4161
4162 if (!(xw.state & WIN_VISIBLE))
4163 return;
4164
4165 for (y = y1; y < y2; y++) {
4166 if (!term.dirty[y])
4167 continue;
4168
4169 term.dirty[y] = 0;
4170
4171 specs = term.specbuf;
4172 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
4173
4174 i = ox = 0;
4175 for (x = x1; x < x2 && i < numspecs; x++) {
4176 new = term.line[y][x];
4177 if (new.mode == ATTR_WDUMMY)
4178 continue;
4179 if (ena_sel && selected(x, y))
4180 new.mode ^= ATTR_REVERSE;
4181 if (i > 0 && ATTRCMP(base, new)) {
4182 xdrawglyphfontspecs(specs, base, i, ox, y);
4183 specs += i;
4184 numspecs -= i;
4185 i = 0;
4186 }
4187 if (i == 0) {
4188 ox = x;
4189 base = new;
4190 }
4191 i++;
4192 }
4193 if (i > 0)
4194 xdrawglyphfontspecs(specs, base, i, ox, y);
4195 }
4196 xdrawcursor();
4197 }
4198
4199 void
4200 expose(XEvent *ev)
4201 {
4202 redraw();
4203 }
4204
4205 void
4206 visibility(XEvent *ev)
4207 {
4208 XVisibilityEvent *e = &ev->xvisibility;
4209
4210 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
4211 }
4212
4213 void
4214 unmap(XEvent *ev)
4215 {
4216 xw.state &= ~WIN_VISIBLE;
4217 }
4218
4219 void
4220 xsetpointermotion(int set)
4221 {
4222 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
4223 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
4224 }
4225
4226 void
4227 xseturgency(int add)
4228 {
4229 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
4230
4231 MODBIT(h->flags, add, XUrgencyHint);
4232 XSetWMHints(xw.dpy, xw.win, h);
4233 XFree(h);
4234 }
4235
4236 void
4237 focus(XEvent *ev)
4238 {
4239 XFocusChangeEvent *e = &ev->xfocus;
4240
4241 if (e->mode == NotifyGrab)
4242 return;
4243
4244 if (ev->type == FocusIn) {
4245 XSetICFocus(xw.xic);
4246 xw.state |= WIN_FOCUSED;
4247 xseturgency(0);
4248 if (IS_SET(MODE_FOCUS))
4249 ttywrite("\033[I", 3);
4250 } else {
4251 XUnsetICFocus(xw.xic);
4252 xw.state &= ~WIN_FOCUSED;
4253 if (IS_SET(MODE_FOCUS))
4254 ttywrite("\033[O", 3);
4255 }
4256 }
4257
4258 int
4259 match(uint mask, uint state)
4260 {
4261 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
4262 }
4263
4264 void
4265 numlock(const Arg *dummy)
4266 {
4267 term.numlock ^= 1;
4268 }
4269
4270 char*
4271 kmap(KeySym k, uint state)
4272 {
4273 Key *kp;
4274 int i;
4275
4276 /* Check for mapped keys out of X11 function keys. */
4277 for (i = 0; i < LEN(mappedkeys); i++) {
4278 if (mappedkeys[i] == k)
4279 break;
4280 }
4281 if (i == LEN(mappedkeys)) {
4282 if ((k & 0xFFFF) < 0xFD00)
4283 return NULL;
4284 }
4285
4286 for (kp = key; kp < key + LEN(key); kp++) {
4287 if (kp->k != k)
4288 continue;
4289
4290 if (!match(kp->mask, state))
4291 continue;
4292
4293 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
4294 continue;
4295 if (term.numlock && kp->appkey == 2)
4296 continue;
4297
4298 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
4299 continue;
4300
4301 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
4302 continue;
4303
4304 return kp->s;
4305 }
4306
4307 return NULL;
4308 }
4309
4310 void
4311 kpress(XEvent *ev)
4312 {
4313 XKeyEvent *e = &ev->xkey;
4314 KeySym ksym;
4315 char buf[32], *customkey;
4316 int len;
4317 Rune c;
4318 Status status;
4319 Shortcut *bp;
4320
4321 if (IS_SET(MODE_KBDLOCK))
4322 return;
4323
4324 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
4325 /* 1. shortcuts */
4326 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
4327 if (ksym == bp->keysym && match(bp->mod, e->state)) {
4328 bp->func(&(bp->arg));
4329 return;
4330 }
4331 }
4332
4333 /* 2. custom keys from config.h */
4334 if ((customkey = kmap(ksym, e->state))) {
4335 ttysend(customkey, strlen(customkey));
4336 return;
4337 }
4338
4339 /* 3. composed string from input method */
4340 if (len == 0)
4341 return;
4342 if (len == 1 && e->state & Mod1Mask) {
4343 if (IS_SET(MODE_8BIT)) {
4344 if (*buf < 0177) {
4345 c = *buf | 0x80;
4346 len = utf8encode(c, buf);
4347 }
4348 } else {
4349 buf[1] = buf[0];
4350 buf[0] = '\033';
4351 len = 2;
4352 }
4353 }
4354 ttysend(buf, len);
4355 }
4356
4357
4358 void
4359 cmessage(XEvent *e)
4360 {
4361 /*
4362 * See xembed specs
4363 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
4364 */
4365 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
4366 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
4367 xw.state |= WIN_FOCUSED;
4368 xseturgency(0);
4369 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
4370 xw.state &= ~WIN_FOCUSED;
4371 }
4372 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
4373 /* Send SIGHUP to shell */
4374 kill(pid, SIGHUP);
4375 exit(0);
4376 }
4377 }
4378
4379 void
4380 cresize(int width, int height)
4381 {
4382 int col, row;
4383
4384 if (width != 0)
4385 xw.w = width;
4386 if (height != 0)
4387 xw.h = height;
4388
4389 col = (xw.w - 2 * borderpx) / xw.cw;
4390 row = (xw.h - 2 * borderpx) / xw.ch;
4391
4392 tresize(col, row);
4393 xresize(col, row);
4394 }
4395
4396 void
4397 resize(XEvent *e)
4398 {
4399 if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
4400 return;
4401
4402 cresize(e->xconfigure.width, e->xconfigure.height);
4403 ttyresize();
4404 }
4405
4406 void
4407 run(void)
4408 {
4409 XEvent ev;
4410 int w = xw.w, h = xw.h;
4411 fd_set rfd;
4412 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
4413 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
4414 long deltatime;
4415
4416 /* Waiting for window mapping */
4417 do {
4418 XNextEvent(xw.dpy, &ev);
4419 /*
4420 * This XFilterEvent call is required because of XOpenIM. It
4421 * does filter out the key event and some client message for
4422 * the input method too.
4423 */
4424 if (XFilterEvent(&ev, None))
4425 continue;
4426 if (ev.type == ConfigureNotify) {
4427 w = ev.xconfigure.width;
4428 h = ev.xconfigure.height;
4429 }
4430 } while (ev.type != MapNotify);
4431
4432 cresize(w, h);
4433 ttynew();
4434 ttyresize();
4435
4436 clock_gettime(CLOCK_MONOTONIC, &last);
4437 lastblink = last;
4438
4439 for (xev = actionfps;;) {
4440 FD_ZERO(&rfd);
4441 FD_SET(cmdfd, &rfd);
4442 FD_SET(xfd, &rfd);
4443
4444 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
4445 if (errno == EINTR)
4446 continue;
4447 die("select failed: %s\n", strerror(errno));
4448 }
4449 if (FD_ISSET(cmdfd, &rfd)) {
4450 ttyread();
4451 if (blinktimeout) {
4452 blinkset = tattrset(ATTR_BLINK);
4453 if (!blinkset)
4454 MODBIT(term.mode, 0, MODE_BLINK);
4455 }
4456 }
4457
4458 if (FD_ISSET(xfd, &rfd))
4459 xev = actionfps;
4460
4461 clock_gettime(CLOCK_MONOTONIC, &now);
4462 drawtimeout.tv_sec = 0;
4463 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
4464 tv = &drawtimeout;
4465
4466 dodraw = 0;
4467 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
4468 tsetdirtattr(ATTR_BLINK);
4469 term.mode ^= MODE_BLINK;
4470 lastblink = now;
4471 dodraw = 1;
4472 }
4473 deltatime = TIMEDIFF(now, last);
4474 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
4475 dodraw = 1;
4476 last = now;
4477 }
4478
4479 if (dodraw) {
4480 while (XPending(xw.dpy)) {
4481 XNextEvent(xw.dpy, &ev);
4482 if (XFilterEvent(&ev, None))
4483 continue;
4484 if (handler[ev.type])
4485 (handler[ev.type])(&ev);
4486 }
4487
4488 draw();
4489 XFlush(xw.dpy);
4490
4491 if (xev && !FD_ISSET(xfd, &rfd))
4492 xev--;
4493 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
4494 if (blinkset) {
4495 if (TIMEDIFF(now, lastblink) \
4496 > blinktimeout) {
4497 drawtimeout.tv_nsec = 1000;
4498 } else {
4499 drawtimeout.tv_nsec = (1E6 * \
4500 (blinktimeout - \
4501 TIMEDIFF(now,
4502 lastblink)));
4503 }
4504 drawtimeout.tv_sec = \
4505 drawtimeout.tv_nsec / 1E9;
4506 drawtimeout.tv_nsec %= (long)1E9;
4507 } else {
4508 tv = NULL;
4509 }
4510 }
4511 }
4512 }
4513 }
4514
4515 void
4516 usage(void)
4517 {
4518 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
4519 " [-n name] [-o file]\n"
4520 " [-T title] [-t title] [-w windowid]"
4521 " [[-e] command [args ...]]\n"
4522 " %s [-aiv] [-c class] [-f font] [-g geometry]"
4523 " [-n name] [-o file]\n"
4524 " [-T title] [-t title] [-w windowid] -l line"
4525 " [stty_args ...]\n", argv0, argv0);
4526 }
4527
4528 int
4529 main(int argc, char *argv[])
4530 {
4531 xw.l = xw.t = 0;
4532 xw.isfixed = False;
4533 xw.cursor = cursorshape;
4534
4535 ARGBEGIN {
4536 case 'a':
4537 allowaltscreen = 0;
4538 break;
4539 case 'c':
4540 opt_class = EARGF(usage());
4541 break;
4542 case 'e':
4543 if (argc > 0)
4544 --argc, ++argv;
4545 goto run;
4546 case 'f':
4547 opt_font = EARGF(usage());
4548 break;
4549 case 'g':
4550 xw.gm = XParseGeometry(EARGF(usage()),
4551 &xw.l, &xw.t, &cols, &rows);
4552 break;
4553 case 'i':
4554 xw.isfixed = 1;
4555 break;
4556 case 'o':
4557 opt_io = EARGF(usage());
4558 break;
4559 case 'l':
4560 opt_line = EARGF(usage());
4561 break;
4562 case 'n':
4563 opt_name = EARGF(usage());
4564 break;
4565 case 't':
4566 case 'T':
4567 opt_title = EARGF(usage());
4568 break;
4569 case 'w':
4570 opt_embed = EARGF(usage());
4571 break;
4572 case 'v':
4573 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
4574 break;
4575 default:
4576 usage();
4577 } ARGEND;
4578
4579 run:
4580 if (argc > 0) {
4581 /* eat all remaining arguments */
4582 opt_cmd = argv;
4583 if (!opt_title && !opt_line)
4584 opt_title = basename(xstrdup(argv[0]));
4585 }
4586 setlocale(LC_CTYPE, "");
4587 XSetLocaleModifiers("");
4588 tnew(MAX(cols, 1), MAX(rows, 1));
4589 xinit();
4590 selinit();
4591 run();
4592
4593 return 0;
4594 }
4595