Xinqi Bao's Git

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