Xinqi Bao's Git

projects / st.git / blob


97e1800d5196f160d777d0a06acdd7cdf213a59c
[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 <time.h>
21 #include <unistd.h>
22 #include <libgen.h>
23 #include <X11/Xatom.h>
24 #include <X11/Xlib.h>
25 #include <X11/Xutil.h>
26 #include <X11/cursorfont.h>
27 #include <X11/keysym.h>
28 #include <X11/Xft/Xft.h>
29 #include <X11/XKBlib.h>
30 #include <fontconfig/fontconfig.h>
31 #include <wchar.h>
32
33 #include "arg.h"
34
35 char *argv0;
36
37 #define Glyph Glyph_
38 #define Font Font_
39
40 #if defined(__linux)
41 #include <pty.h>
42 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
43 #include <util.h>
44 #elif defined(__FreeBSD__) || defined(__DragonFly__)
45 #include <libutil.h>
46 #endif
47
48
49 /* XEMBED messages */
50 #define XEMBED_FOCUS_IN 4
51 #define XEMBED_FOCUS_OUT 5
52
53 /* Arbitrary sizes */
54 #define UTF_INVALID 0xFFFD
55 #define UTF_SIZ 4
56 #define ESC_BUF_SIZ (128*UTF_SIZ)
57 #define ESC_ARG_SIZ 16
58 #define STR_BUF_SIZ ESC_BUF_SIZ
59 #define STR_ARG_SIZ ESC_ARG_SIZ
60 #define XK_ANY_MOD UINT_MAX
61 #define XK_NO_MOD 0
62 #define XK_SWITCH_MOD (1<<13)
63
64 /* macros */
65 #define MIN(a, b) ((a) < (b) ? (a) : (b))
66 #define MAX(a, b) ((a) < (b) ? (b) : (a))
67 #define LEN(a) (sizeof(a) / sizeof(a)[0])
68 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
69 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
70 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
71 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
72 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
73 #define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL)
74 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
75 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
76 #define IS_SET(flag) ((term.mode & (flag)) != 0)
77 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_nsec-t2.tv_nsec)/1E6)
78 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
79
80 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
81 #define IS_TRUECOL(x) (1 << 24 & (x))
82 #define TRUERED(x) (((x) & 0xff0000) >> 8)
83 #define TRUEGREEN(x) (((x) & 0xff00))
84 #define TRUEBLUE(x) (((x) & 0xff) << 8)
85
86
87 enum glyph_attribute {
88 ATTR_NULL = 0,
89 ATTR_BOLD = 1 << 0,
90 ATTR_FAINT = 1 << 1,
91 ATTR_ITALIC = 1 << 2,
92 ATTR_UNDERLINE = 1 << 3,
93 ATTR_BLINK = 1 << 4,
94 ATTR_REVERSE = 1 << 5,
95 ATTR_INVISIBLE = 1 << 6,
96 ATTR_STRUCK = 1 << 7,
97 ATTR_WRAP = 1 << 8,
98 ATTR_WIDE = 1 << 9,
99 ATTR_WDUMMY = 1 << 10,
100 ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
101 };
102
103 enum cursor_movement {
104 CURSOR_SAVE,
105 CURSOR_LOAD
106 };
107
108 enum cursor_state {
109 CURSOR_DEFAULT = 0,
110 CURSOR_WRAPNEXT = 1,
111 CURSOR_ORIGIN = 2
112 };
113
114 enum term_mode {
115 MODE_WRAP = 1 << 0,
116 MODE_INSERT = 1 << 1,
117 MODE_APPKEYPAD = 1 << 2,
118 MODE_ALTSCREEN = 1 << 3,
119 MODE_CRLF = 1 << 4,
120 MODE_MOUSEBTN = 1 << 5,
121 MODE_MOUSEMOTION = 1 << 6,
122 MODE_REVERSE = 1 << 7,
123 MODE_KBDLOCK = 1 << 8,
124 MODE_HIDE = 1 << 9,
125 MODE_ECHO = 1 << 10,
126 MODE_APPCURSOR = 1 << 11,
127 MODE_MOUSESGR = 1 << 12,
128 MODE_8BIT = 1 << 13,
129 MODE_BLINK = 1 << 14,
130 MODE_FBLINK = 1 << 15,
131 MODE_FOCUS = 1 << 16,
132 MODE_MOUSEX10 = 1 << 17,
133 MODE_MOUSEMANY = 1 << 18,
134 MODE_BRCKTPASTE = 1 << 19,
135 MODE_PRINT = 1 << 20,
136 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
137 |MODE_MOUSEMANY,
138 };
139
140 enum charset {
141 CS_GRAPHIC0,
142 CS_GRAPHIC1,
143 CS_UK,
144 CS_USA,
145 CS_MULTI,
146 CS_GER,
147 CS_FIN
148 };
149
150 enum escape_state {
151 ESC_START = 1,
152 ESC_CSI = 2,
153 ESC_STR = 4, /* DCS, OSC, PM, APC */
154 ESC_ALTCHARSET = 8,
155 ESC_STR_END = 16, /* a final string was encountered */
156 ESC_TEST = 32, /* Enter in test mode */
157 };
158
159 enum window_state {
160 WIN_VISIBLE = 1,
161 WIN_FOCUSED = 2
162 };
163
164 enum selection_mode {
165 SEL_IDLE = 0,
166 SEL_EMPTY = 1,
167 SEL_READY = 2
168 };
169
170 enum selection_type {
171 SEL_REGULAR = 1,
172 SEL_RECTANGULAR = 2
173 };
174
175 enum selection_snap {
176 SNAP_WORD = 1,
177 SNAP_LINE = 2
178 };
179
180 typedef unsigned char uchar;
181 typedef unsigned int uint;
182 typedef unsigned long ulong;
183 typedef unsigned short ushort;
184
185 typedef uint_least32_t Rune;
186
187 typedef XftDraw *Draw;
188 typedef XftColor Color;
189
190 typedef struct {
191 Rune u; /* character code */
192 ushort mode; /* attribute flags */
193 uint32_t fg; /* foreground */
194 uint32_t bg; /* background */
195 } Glyph;
196
197 typedef Glyph *Line;
198
199 typedef struct {
200 Glyph attr; /* current char attributes */
201 int x;
202 int y;
203 char state;
204 } TCursor;
205
206 /* CSI Escape sequence structs */
207 /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
208 typedef struct {
209 char buf[ESC_BUF_SIZ]; /* raw string */
210 int len; /* raw string length */
211 char priv;
212 int arg[ESC_ARG_SIZ];
213 int narg; /* nb of args */
214 char mode[2];
215 } CSIEscape;
216
217 /* STR Escape sequence structs */
218 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
219 typedef struct {
220 char type; /* ESC type ... */
221 char buf[STR_BUF_SIZ]; /* raw string */
222 int len; /* raw string length */
223 char *args[STR_ARG_SIZ];
224 int narg; /* nb of args */
225 } STREscape;
226
227 /* Internal representation of the screen */
228 typedef struct {
229 int row; /* nb row */
230 int col; /* nb col */
231 Line *line; /* screen */
232 Line *alt; /* alternate screen */
233 int *dirty; /* dirtyness of lines */
234 XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
235 TCursor c; /* cursor */
236 int top; /* top scroll limit */
237 int bot; /* bottom scroll limit */
238 int mode; /* terminal mode flags */
239 int esc; /* escape state flags */
240 char trantbl[4]; /* charset table translation */
241 int charset; /* current charset */
242 int icharset; /* selected charset for sequence */
243 int numlock; /* lock numbers in keyboard */
244 int *tabs;
245 } Term;
246
247 /* Purely graphic info */
248 typedef struct {
249 Display *dpy;
250 Colormap cmap;
251 Window win;
252 Drawable buf;
253 Atom xembed, wmdeletewin, netwmname, netwmpid;
254 XIM xim;
255 XIC xic;
256 Draw draw;
257 Visual *vis;
258 XSetWindowAttributes attrs;
259 int scr;
260 int isfixed; /* is fixed geometry? */
261 int l, t; /* left and top offset */
262 int gm; /* geometry mask */
263 int tw, th; /* tty width and height */
264 int w, h; /* window width and height */
265 int ch; /* char height */
266 int cw; /* char width */
267 char state; /* focus, redraw, visible */
268 int cursor; /* cursor style */
269 } XWindow;
270
271 typedef struct {
272 uint b;
273 uint mask;
274 char *s;
275 } Mousekey;
276
277 typedef struct {
278 KeySym k;
279 uint mask;
280 char *s;
281 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
282 signed char appkey; /* application keypad */
283 signed char appcursor; /* application cursor */
284 signed char crlf; /* crlf mode */
285 } Key;
286
287 typedef struct {
288 int mode;
289 int type;
290 int snap;
291 /*
292 * Selection variables:
293 * nb – normalized coordinates of the beginning of the selection
294 * ne – normalized coordinates of the end of the selection
295 * ob – original coordinates of the beginning of the selection
296 * oe – original coordinates of the end of the selection
297 */
298 struct {
299 int x, y;
300 } nb, ne, ob, oe;
301
302 char *primary, *clipboard;
303 Atom xtarget;
304 int alt;
305 struct timespec tclick1;
306 struct timespec tclick2;
307 } Selection;
308
309 typedef union {
310 int i;
311 uint ui;
312 float f;
313 const void *v;
314 } Arg;
315
316 typedef struct {
317 uint mod;
318 KeySym keysym;
319 void (*func)(const Arg *);
320 const Arg arg;
321 } Shortcut;
322
323 /* function definitions used in config.h */
324 static void clipcopy(const Arg *);
325 static void clippaste(const Arg *);
326 static void numlock(const Arg *);
327 static void selpaste(const Arg *);
328 static void xzoom(const Arg *);
329 static void xzoomabs(const Arg *);
330 static void xzoomreset(const Arg *);
331 static void printsel(const Arg *);
332 static void printscreen(const Arg *) ;
333 static void toggleprinter(const Arg *);
334
335 /* Config.h for applying patches and the configuration. */
336 #include "config.h"
337
338 /* Font structure */
339 typedef struct {
340 int height;
341 int width;
342 int ascent;
343 int descent;
344 short lbearing;
345 short rbearing;
346 XftFont *match;
347 FcFontSet *set;
348 FcPattern *pattern;
349 } Font;
350
351 /* Drawing Context */
352 typedef struct {
353 Color col[MAX(LEN(colorname), 256)];
354 Font font, bfont, ifont, ibfont;
355 GC gc;
356 } DC;
357
358 static void die(const char *, ...);
359 static void draw(void);
360 static void redraw(void);
361 static void drawregion(int, int, int, int);
362 static void execsh(void);
363 static void stty(void);
364 static void sigchld(int);
365 static void run(void);
366
367 static void csidump(void);
368 static void csihandle(void);
369 static void csiparse(void);
370 static void csireset(void);
371 static int eschandle(uchar);
372 static void strdump(void);
373 static void strhandle(void);
374 static void strparse(void);
375 static void strreset(void);
376
377 static int tattrset(int);
378 static void tprinter(char *, size_t);
379 static void tdumpsel(void);
380 static void tdumpline(int);
381 static void tdump(void);
382 static void tclearregion(int, int, int, int);
383 static void tcursor(int);
384 static void tdeletechar(int);
385 static void tdeleteline(int);
386 static void tinsertblank(int);
387 static void tinsertblankline(int);
388 static int tlinelen(int);
389 static void tmoveto(int, int);
390 static void tmoveato(int, int);
391 static void tnew(int, int);
392 static void tnewline(int);
393 static void tputtab(int);
394 static void tputc(Rune);
395 static void treset(void);
396 static void tresize(int, int);
397 static void tscrollup(int, int);
398 static void tscrolldown(int, int);
399 static void tsetattr(int *, int);
400 static void tsetchar(Rune, Glyph *, int, int);
401 static void tsetscroll(int, int);
402 static void tswapscreen(void);
403 static void tsetdirt(int, int);
404 static void tsetdirtattr(int);
405 static void tsetmode(int, int, int *, int);
406 static void tfulldirt(void);
407 static void techo(Rune);
408 static void tcontrolcode(uchar );
409 static void tdectest(char );
410 static int32_t tdefcolor(int *, int *, int);
411 static void tdeftran(char);
412 static inline int match(uint, uint);
413 static void ttynew(void);
414 static void ttyread(void);
415 static void ttyresize(void);
416 static void ttysend(char *, size_t);
417 static void ttywrite(const char *, size_t);
418 static void tstrsequence(uchar);
419
420 static inline ushort sixd_to_16bit(int);
421 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
422 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
423 static void xdrawglyph(Glyph, int, int);
424 static void xhints(void);
425 static void xclear(int, int, int, int);
426 static void xdrawcursor(void);
427 static void xinit(void);
428 static void xloadcols(void);
429 static int xsetcolorname(int, const char *);
430 static int xgeommasktogravity(int);
431 static int xloadfont(Font *, FcPattern *);
432 static void xloadfonts(char *, double);
433 static void xsettitle(char *);
434 static void xresettitle(void);
435 static void xsetpointermotion(int);
436 static void xseturgency(int);
437 static void xsetsel(char *, Time);
438 static void xtermclear(int, int, int, int);
439 static void xunloadfont(Font *);
440 static void xunloadfonts(void);
441 static void xresize(int, int);
442
443 static void expose(XEvent *);
444 static void visibility(XEvent *);
445 static void unmap(XEvent *);
446 static char *kmap(KeySym, uint);
447 static void kpress(XEvent *);
448 static void cmessage(XEvent *);
449 static void cresize(int, int);
450 static void resize(XEvent *);
451 static void focus(XEvent *);
452 static void brelease(XEvent *);
453 static void bpress(XEvent *);
454 static void bmotion(XEvent *);
455 static void propnotify(XEvent *);
456 static void selnotify(XEvent *);
457 static void selclear(XEvent *);
458 static void selrequest(XEvent *);
459
460 static void selinit(void);
461 static void selnormalize(void);
462 static inline int selected(int, int);
463 static char *getsel(void);
464 static void selcopy(Time);
465 static void selscroll(int, int);
466 static void selsnap(int *, int *, int);
467 static int x2col(int);
468 static int y2row(int);
469 static void getbuttoninfo(XEvent *);
470 static void mousereport(XEvent *);
471
472 static size_t utf8decode(char *, Rune *, size_t);
473 static Rune utf8decodebyte(char, size_t *);
474 static size_t utf8encode(Rune, char *);
475 static char utf8encodebyte(Rune, size_t);
476 static char *utf8strchr(char *s, Rune u);
477 static size_t utf8validate(Rune *, size_t);
478
479 static ssize_t xwrite(int, const char *, size_t);
480 static void *xmalloc(size_t);
481 static void *xrealloc(void *, size_t);
482 static char *xstrdup(char *);
483
484 static void usage(void);
485
486 static void (*handler[LASTEvent])(XEvent *) = {
487 [KeyPress] = kpress,
488 [ClientMessage] = cmessage,
489 [ConfigureNotify] = resize,
490 [VisibilityNotify] = visibility,
491 [UnmapNotify] = unmap,
492 [Expose] = expose,
493 [FocusIn] = focus,
494 [FocusOut] = focus,
495 [MotionNotify] = bmotion,
496 [ButtonPress] = bpress,
497 [ButtonRelease] = brelease,
498 /*
499 * Uncomment if you want the selection to disappear when you select something
500 * different in another window.
501 */
502 /* [SelectionClear] = selclear, */
503 [SelectionNotify] = selnotify,
504 /*
505 * PropertyNotify is only turned on when there is some INCR transfer happening
506 * for the selection retrieval.
507 */
508 [PropertyNotify] = propnotify,
509 [SelectionRequest] = selrequest,
510 };
511
512 /* Globals */
513 static DC dc;
514 static XWindow xw;
515 static Term term;
516 static CSIEscape csiescseq;
517 static STREscape strescseq;
518 static int cmdfd;
519 static pid_t pid;
520 static Selection sel;
521 static int iofd = 1;
522 static char **opt_cmd = NULL;
523 static char *opt_io = NULL;
524 static char *opt_title = NULL;
525 static char *opt_embed = NULL;
526 static char *opt_class = NULL;
527 static char *opt_font = NULL;
528 static char *opt_line = NULL;
529 static int oldbutton = 3; /* button event on startup: 3 = release */
530
531 static char *usedfont = NULL;
532 static double usedfontsize = 0;
533 static double defaultfontsize = 0;
534
535 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
536 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
537 static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
538 static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
539
540 /* Font Ring Cache */
541 enum {
542 FRC_NORMAL,
543 FRC_ITALIC,
544 FRC_BOLD,
545 FRC_ITALICBOLD
546 };
547
548 typedef struct {
549 XftFont *font;
550 int flags;
551 Rune unicodep;
552 } Fontcache;
553
554 /* Fontcache is an array now. A new font will be appended to the array. */
555 static Fontcache frc[16];
556 static int frclen = 0;
557
558 ssize_t
559 xwrite(int fd, const char *s, size_t len)
560 {
561 size_t aux = len, r;
562
563 while (len > 0) {
564 r = write(fd, s, len);
565 if (r < 0)
566 return r;
567 len -= r;
568 s += r;
569 }
570 return aux;
571 }
572
573 void *
574 xmalloc(size_t len)
575 {
576 void *p = malloc(len);
577
578 if (!p)
579 die("Out of memory\n");
580
581 return p;
582 }
583
584 void *
585 xrealloc(void *p, size_t len)
586 {
587 if ((p = realloc(p, len)) == NULL)
588 die("Out of memory\n");
589
590 return p;
591 }
592
593 char *
594 xstrdup(char *s)
595 {
596 if ((s = strdup(s)) == NULL)
597 die("Out of memory\n");
598
599 return s;
600 }
601
602 size_t
603 utf8decode(char *c, Rune *u, size_t clen)
604 {
605 size_t i, j, len, type;
606 Rune udecoded;
607
608 *u = UTF_INVALID;
609 if (!clen)
610 return 0;
611 udecoded = utf8decodebyte(c[0], &len);
612 if (!BETWEEN(len, 1, UTF_SIZ))
613 return 1;
614 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
615 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
616 if (type != 0)
617 return j;
618 }
619 if (j < len)
620 return 0;
621 *u = udecoded;
622 utf8validate(u, len);
623 return len;
624 }
625
626 Rune
627 utf8decodebyte(char c, size_t *i)
628 {
629 for (*i = 0; *i < LEN(utfmask); ++(*i))
630 if (((uchar)c & utfmask[*i]) == utfbyte[*i])
631 return (uchar)c & ~utfmask[*i];
632 return 0;
633 }
634
635 size_t
636 utf8encode(Rune u, char *c)
637 {
638 size_t len, i;
639
640 len = utf8validate(&u, 0);
641 if (len > UTF_SIZ)
642 return 0;
643 for (i = len - 1; i != 0; --i) {
644 c[i] = utf8encodebyte(u, 0);
645 u >>= 6;
646 }
647 c[0] = utf8encodebyte(u, len);
648 return len;
649 }
650
651 char
652 utf8encodebyte(Rune u, size_t i)
653 {
654 return utfbyte[i] | (u & ~utfmask[i]);
655 }
656
657 char *
658 utf8strchr(char *s, Rune u)
659 {
660 Rune r;
661 size_t i, j, len;
662
663 len = strlen(s);
664 for (i = 0, j = 0; i < len; i += j) {
665 if (!(j = utf8decode(&s[i], &r, len - i)))
666 break;
667 if (r == u)
668 return &(s[i]);
669 }
670 return NULL;
671 }
672
673 size_t
674 utf8validate(Rune *u, size_t i)
675 {
676 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
677 *u = UTF_INVALID;
678 for (i = 1; *u > utfmax[i]; ++i)
679 ;
680 return i;
681 }
682
683 void
684 selinit(void)
685 {
686 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
687 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
688 sel.mode = SEL_IDLE;
689 sel.ob.x = -1;
690 sel.primary = NULL;
691 sel.clipboard = NULL;
692 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
693 if (sel.xtarget == None)
694 sel.xtarget = XA_STRING;
695 }
696
697 int
698 x2col(int x)
699 {
700 x -= borderpx;
701 x /= xw.cw;
702
703 return LIMIT(x, 0, term.col-1);
704 }
705
706 int
707 y2row(int y)
708 {
709 y -= borderpx;
710 y /= xw.ch;
711
712 return LIMIT(y, 0, term.row-1);
713 }
714
715 int
716 tlinelen(int y)
717 {
718 int i = term.col;
719
720 if (term.line[y][i - 1].mode & ATTR_WRAP)
721 return i;
722
723 while (i > 0 && term.line[y][i - 1].u == ' ')
724 --i;
725
726 return i;
727 }
728
729 void
730 selnormalize(void)
731 {
732 int i;
733
734 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
735 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
736 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
737 } else {
738 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
739 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
740 }
741 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
742 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
743
744 selsnap(&sel.nb.x, &sel.nb.y, -1);
745 selsnap(&sel.ne.x, &sel.ne.y, +1);
746
747 /* expand selection over line breaks */
748 if (sel.type == SEL_RECTANGULAR)
749 return;
750 i = tlinelen(sel.nb.y);
751 if (i < sel.nb.x)
752 sel.nb.x = i;
753 if (tlinelen(sel.ne.y) <= sel.ne.x)
754 sel.ne.x = term.col - 1;
755 }
756
757 int
758 selected(int x, int y)
759 {
760 if (sel.mode == SEL_EMPTY)
761 return 0;
762
763 if (sel.type == SEL_RECTANGULAR)
764 return BETWEEN(y, sel.nb.y, sel.ne.y)
765 && BETWEEN(x, sel.nb.x, sel.ne.x);
766
767 return BETWEEN(y, sel.nb.y, sel.ne.y)
768 && (y != sel.nb.y || x >= sel.nb.x)
769 && (y != sel.ne.y || x <= sel.ne.x);
770 }
771
772 void
773 selsnap(int *x, int *y, int direction)
774 {
775 int newx, newy, xt, yt;
776 int delim, prevdelim;
777 Glyph *gp, *prevgp;
778
779 switch (sel.snap) {
780 case SNAP_WORD:
781 /*
782 * Snap around if the word wraps around at the end or
783 * beginning of a line.
784 */
785 prevgp = &term.line[*y][*x];
786 prevdelim = ISDELIM(prevgp->u);
787 for (;;) {
788 newx = *x + direction;
789 newy = *y;
790 if (!BETWEEN(newx, 0, term.col - 1)) {
791 newy += direction;
792 newx = (newx + term.col) % term.col;
793 if (!BETWEEN(newy, 0, term.row - 1))
794 break;
795
796 if (direction > 0)
797 yt = *y, xt = *x;
798 else
799 yt = newy, xt = newx;
800 if (!(term.line[yt][xt].mode & ATTR_WRAP))
801 break;
802 }
803
804 if (newx >= tlinelen(newy))
805 break;
806
807 gp = &term.line[newy][newx];
808 delim = ISDELIM(gp->u);
809 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
810 || (delim && gp->u != prevgp->u)))
811 break;
812
813 *x = newx;
814 *y = newy;
815 prevgp = gp;
816 prevdelim = delim;
817 }
818 break;
819 case SNAP_LINE:
820 /*
821 * Snap around if the the previous line or the current one
822 * has set ATTR_WRAP at its end. Then the whole next or
823 * previous line will be selected.
824 */
825 *x = (direction < 0) ? 0 : term.col - 1;
826 if (direction < 0) {
827 for (; *y > 0; *y += direction) {
828 if (!(term.line[*y-1][term.col-1].mode
829 & ATTR_WRAP)) {
830 break;
831 }
832 }
833 } else if (direction > 0) {
834 for (; *y < term.row-1; *y += direction) {
835 if (!(term.line[*y][term.col-1].mode
836 & ATTR_WRAP)) {
837 break;
838 }
839 }
840 }
841 break;
842 }
843 }
844
845 void
846 getbuttoninfo(XEvent *e)
847 {
848 int type;
849 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
850
851 sel.alt = IS_SET(MODE_ALTSCREEN);
852
853 sel.oe.x = x2col(e->xbutton.x);
854 sel.oe.y = y2row(e->xbutton.y);
855 selnormalize();
856
857 sel.type = SEL_REGULAR;
858 for (type = 1; type < LEN(selmasks); ++type) {
859 if (match(selmasks[type], state)) {
860 sel.type = type;
861 break;
862 }
863 }
864 }
865
866 void
867 mousereport(XEvent *e)
868 {
869 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
870 button = e->xbutton.button, state = e->xbutton.state,
871 len;
872 char buf[40];
873 static int ox, oy;
874
875 /* from urxvt */
876 if (e->xbutton.type == MotionNotify) {
877 if (x == ox && y == oy)
878 return;
879 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
880 return;
881 /* MOUSE_MOTION: no reporting if no button is pressed */
882 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
883 return;
884
885 button = oldbutton + 32;
886 ox = x;
887 oy = y;
888 } else {
889 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
890 button = 3;
891 } else {
892 button -= Button1;
893 if (button >= 3)
894 button += 64 - 3;
895 }
896 if (e->xbutton.type == ButtonPress) {
897 oldbutton = button;
898 ox = x;
899 oy = y;
900 } else if (e->xbutton.type == ButtonRelease) {
901 oldbutton = 3;
902 /* MODE_MOUSEX10: no button release reporting */
903 if (IS_SET(MODE_MOUSEX10))
904 return;
905 if (button == 64 || button == 65)
906 return;
907 }
908 }
909
910 if (!IS_SET(MODE_MOUSEX10)) {
911 button += ((state & ShiftMask ) ? 4 : 0)
912 + ((state & Mod4Mask ) ? 8 : 0)
913 + ((state & ControlMask) ? 16 : 0);
914 }
915
916 if (IS_SET(MODE_MOUSESGR)) {
917 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
918 button, x+1, y+1,
919 e->xbutton.type == ButtonRelease ? 'm' : 'M');
920 } else if (x < 223 && y < 223) {
921 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
922 32+button, 32+x+1, 32+y+1);
923 } else {
924 return;
925 }
926
927 ttywrite(buf, len);
928 }
929
930 void
931 bpress(XEvent *e)
932 {
933 struct timespec now;
934 Mousekey *mk;
935
936 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
937 mousereport(e);
938 return;
939 }
940
941 for (mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
942 if (e->xbutton.button == mk->b
943 && match(mk->mask, e->xbutton.state)) {
944 ttysend(mk->s, strlen(mk->s));
945 return;
946 }
947 }
948
949 if (e->xbutton.button == Button1) {
950 clock_gettime(CLOCK_MONOTONIC, &now);
951
952 /* Clear previous selection, logically and visually. */
953 selclear(NULL);
954 sel.mode = SEL_EMPTY;
955 sel.type = SEL_REGULAR;
956 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
957 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
958
959 /*
960 * If the user clicks below predefined timeouts specific
961 * snapping behaviour is exposed.
962 */
963 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
964 sel.snap = SNAP_LINE;
965 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
966 sel.snap = SNAP_WORD;
967 } else {
968 sel.snap = 0;
969 }
970 selnormalize();
971
972 if (sel.snap != 0)
973 sel.mode = SEL_READY;
974 tsetdirt(sel.nb.y, sel.ne.y);
975 sel.tclick2 = sel.tclick1;
976 sel.tclick1 = now;
977 }
978 }
979
980 char *
981 getsel(void)
982 {
983 char *str, *ptr;
984 int y, bufsize, lastx, linelen;
985 Glyph *gp, *last;
986
987 if (sel.ob.x == -1)
988 return NULL;
989
990 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
991 ptr = str = xmalloc(bufsize);
992
993 /* append every set & selected glyph to the selection */
994 for (y = sel.nb.y; y <= sel.ne.y; y++) {
995 linelen = tlinelen(y);
996
997 if (sel.type == SEL_RECTANGULAR) {
998 gp = &term.line[y][sel.nb.x];
999 lastx = sel.ne.x;
1000 } else {
1001 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
1002 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
1003 }
1004 last = &term.line[y][MIN(lastx, linelen-1)];
1005 while (last >= gp && last->u == ' ')
1006 --last;
1007
1008 for ( ; gp <= last; ++gp) {
1009 if (gp->mode & ATTR_WDUMMY)
1010 continue;
1011
1012 ptr += utf8encode(gp->u, ptr);
1013 }
1014
1015 /*
1016 * Copy and pasting of line endings is inconsistent
1017 * in the inconsistent terminal and GUI world.
1018 * The best solution seems like to produce '\n' when
1019 * something is copied from st and convert '\n' to
1020 * '\r', when something to be pasted is received by
1021 * st.
1022 * FIXME: Fix the computer world.
1023 */
1024 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
1025 *ptr++ = '\n';
1026 }
1027 *ptr = 0;
1028 return str;
1029 }
1030
1031 void
1032 selcopy(Time t)
1033 {
1034 xsetsel(getsel(), t);
1035 }
1036
1037 void
1038 propnotify(XEvent *e)
1039 {
1040 XPropertyEvent *xpev;
1041 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1042
1043 xpev = &e->xproperty;
1044 if (xpev->state == PropertyNewValue &&
1045 (xpev->atom == XA_PRIMARY ||
1046 xpev->atom == clipboard)) {
1047 selnotify(e);
1048 }
1049 }
1050
1051 void
1052 selnotify(XEvent *e)
1053 {
1054 ulong nitems, ofs, rem;
1055 int format;
1056 uchar *data, *last, *repl;
1057 Atom type, incratom, property;
1058
1059 incratom = XInternAtom(xw.dpy, "INCR", 0);
1060
1061 ofs = 0;
1062 if (e->type == SelectionNotify) {
1063 property = e->xselection.property;
1064 } else if(e->type == PropertyNotify) {
1065 property = e->xproperty.atom;
1066 } else {
1067 return;
1068 }
1069 if (property == None)
1070 return;
1071
1072 do {
1073 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
1074 BUFSIZ/4, False, AnyPropertyType,
1075 &type, &format, &nitems, &rem,
1076 &data)) {
1077 fprintf(stderr, "Clipboard allocation failed\n");
1078 return;
1079 }
1080
1081 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
1082 /*
1083 * If there is some PropertyNotify with no data, then
1084 * this is the signal of the selection owner that all
1085 * data has been transferred. We won't need to receive
1086 * PropertyNotify events anymore.
1087 */
1088 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
1089 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1090 &xw.attrs);
1091 }
1092
1093 if (type == incratom) {
1094 /*
1095 * Activate the PropertyNotify events so we receive
1096 * when the selection owner does send us the next
1097 * chunk of data.
1098 */
1099 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
1100 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1101 &xw.attrs);
1102
1103 /*
1104 * Deleting the property is the transfer start signal.
1105 */
1106 XDeleteProperty(xw.dpy, xw.win, (int)property);
1107 continue;
1108 }
1109
1110 /*
1111 * As seen in getsel:
1112 * Line endings are inconsistent in the terminal and GUI world
1113 * copy and pasting. When receiving some selection data,
1114 * replace all '\n' with '\r'.
1115 * FIXME: Fix the computer world.
1116 */
1117 repl = data;
1118 last = data + nitems * format / 8;
1119 while ((repl = memchr(repl, '\n', last - repl))) {
1120 *repl++ = '\r';
1121 }
1122
1123 if (IS_SET(MODE_BRCKTPASTE))
1124 ttywrite("\033[200~", 6);
1125 ttysend((char *)data, nitems * format / 8);
1126 if (IS_SET(MODE_BRCKTPASTE))
1127 ttywrite("\033[201~", 6);
1128 XFree(data);
1129 /* number of 32-bit chunks returned */
1130 ofs += nitems * format / 32;
1131 } while (rem > 0);
1132
1133 /*
1134 * Deleting the property again tells the selection owner to send the
1135 * next data chunk in the property.
1136 */
1137 if (e->type == PropertyNotify)
1138 XDeleteProperty(xw.dpy, xw.win, (int)property);
1139 }
1140
1141 void
1142 selpaste(const Arg *dummy)
1143 {
1144 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1145 xw.win, CurrentTime);
1146 }
1147
1148 void
1149 clipcopy(const Arg *dummy)
1150 {
1151 Atom clipboard;
1152
1153 if (sel.clipboard != NULL)
1154 free(sel.clipboard);
1155
1156 if (sel.primary != NULL) {
1157 sel.clipboard = xstrdup(sel.primary);
1158 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1159 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1160 }
1161 }
1162
1163 void
1164 clippaste(const Arg *dummy)
1165 {
1166 Atom clipboard;
1167
1168 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1169 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1170 xw.win, CurrentTime);
1171 }
1172
1173 void
1174 selclear(XEvent *e)
1175 {
1176 if (sel.ob.x == -1)
1177 return;
1178 sel.mode = SEL_IDLE;
1179 sel.ob.x = -1;
1180 tsetdirt(sel.nb.y, sel.ne.y);
1181 }
1182
1183 void
1184 selrequest(XEvent *e)
1185 {
1186 XSelectionRequestEvent *xsre;
1187 XSelectionEvent xev;
1188 Atom xa_targets, string, clipboard;
1189 char *seltext;
1190
1191 xsre = (XSelectionRequestEvent *) e;
1192 xev.type = SelectionNotify;
1193 xev.requestor = xsre->requestor;
1194 xev.selection = xsre->selection;
1195 xev.target = xsre->target;
1196 xev.time = xsre->time;
1197 if (xsre->property == None)
1198 xsre->property = xsre->target;
1199
1200 /* reject */
1201 xev.property = None;
1202
1203 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1204 if (xsre->target == xa_targets) {
1205 /* respond with the supported type */
1206 string = sel.xtarget;
1207 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1208 XA_ATOM, 32, PropModeReplace,
1209 (uchar *) &string, 1);
1210 xev.property = xsre->property;
1211 } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1212 /*
1213 * xith XA_STRING non ascii characters may be incorrect in the
1214 * requestor. It is not our problem, use utf8.
1215 */
1216 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1217 if (xsre->selection == XA_PRIMARY) {
1218 seltext = sel.primary;
1219 } else if (xsre->selection == clipboard) {
1220 seltext = sel.clipboard;
1221 } else {
1222 fprintf(stderr,
1223 "Unhandled clipboard selection 0x%lx\n",
1224 xsre->selection);
1225 return;
1226 }
1227 if (seltext != NULL) {
1228 XChangeProperty(xsre->display, xsre->requestor,
1229 xsre->property, xsre->target,
1230 8, PropModeReplace,
1231 (uchar *)seltext, strlen(seltext));
1232 xev.property = xsre->property;
1233 }
1234 }
1235
1236 /* all done, send a notification to the listener */
1237 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
1238 fprintf(stderr, "Error sending SelectionNotify event\n");
1239 }
1240
1241 void
1242 xsetsel(char *str, Time t)
1243 {
1244 free(sel.primary);
1245 sel.primary = str;
1246
1247 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1248 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1249 selclear(0);
1250 }
1251
1252 void
1253 brelease(XEvent *e)
1254 {
1255 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1256 mousereport(e);
1257 return;
1258 }
1259
1260 if (e->xbutton.button == Button2) {
1261 selpaste(NULL);
1262 } else if (e->xbutton.button == Button1) {
1263 if (sel.mode == SEL_READY) {
1264 getbuttoninfo(e);
1265 selcopy(e->xbutton.time);
1266 } else
1267 selclear(NULL);
1268 sel.mode = SEL_IDLE;
1269 tsetdirt(sel.nb.y, sel.ne.y);
1270 }
1271 }
1272
1273 void
1274 bmotion(XEvent *e)
1275 {
1276 int oldey, oldex, oldsby, oldsey;
1277
1278 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1279 mousereport(e);
1280 return;
1281 }
1282
1283 if (!sel.mode)
1284 return;
1285
1286 sel.mode = SEL_READY;
1287 oldey = sel.oe.y;
1288 oldex = sel.oe.x;
1289 oldsby = sel.nb.y;
1290 oldsey = sel.ne.y;
1291 getbuttoninfo(e);
1292
1293 if (oldey != sel.oe.y || oldex != sel.oe.x)
1294 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1295 }
1296
1297 void
1298 die(const char *errstr, ...)
1299 {
1300 va_list ap;
1301
1302 va_start(ap, errstr);
1303 vfprintf(stderr, errstr, ap);
1304 va_end(ap);
1305 exit(1);
1306 }
1307
1308 void
1309 execsh(void)
1310 {
1311 char **args, *sh, *prog;
1312 const struct passwd *pw;
1313 char buf[sizeof(long) * 8 + 1];
1314
1315 errno = 0;
1316 if ((pw = getpwuid(getuid())) == NULL) {
1317 if (errno)
1318 die("getpwuid:%s\n", strerror(errno));
1319 else
1320 die("who are you?\n");
1321 }
1322
1323 if (!(sh = getenv("SHELL"))) {
1324 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1325 }
1326
1327 if (opt_cmd)
1328 prog = opt_cmd[0];
1329 else if (utmp)
1330 prog = utmp;
1331 else
1332 prog = sh;
1333 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1334
1335 snprintf(buf, sizeof(buf), "%lu", xw.win);
1336
1337 unsetenv("COLUMNS");
1338 unsetenv("LINES");
1339 unsetenv("TERMCAP");
1340 setenv("LOGNAME", pw->pw_name, 1);
1341 setenv("USER", pw->pw_name, 1);
1342 setenv("SHELL", sh, 1);
1343 setenv("HOME", pw->pw_dir, 1);
1344 setenv("TERM", termname, 1);
1345 setenv("WINDOWID", buf, 1);
1346
1347 signal(SIGCHLD, SIG_DFL);
1348 signal(SIGHUP, SIG_DFL);
1349 signal(SIGINT, SIG_DFL);
1350 signal(SIGQUIT, SIG_DFL);
1351 signal(SIGTERM, SIG_DFL);
1352 signal(SIGALRM, SIG_DFL);
1353
1354 execvp(prog, args);
1355 _exit(1);
1356 }
1357
1358 void
1359 sigchld(int a)
1360 {
1361 int stat;
1362 pid_t p;
1363
1364 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
1365 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1366
1367 if (pid != p)
1368 return;
1369
1370 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
1371 die("child finished with error '%d'\n", stat);
1372 exit(0);
1373 }
1374
1375
1376 void
1377 stty(void)
1378 {
1379 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1380 size_t n, siz;
1381
1382 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
1383 die("incorrect stty parameters\n");
1384 memcpy(cmd, stty_args, n);
1385 q = cmd + n;
1386 siz = sizeof(cmd) - n;
1387 for (p = opt_cmd; p && (s = *p); ++p) {
1388 if ((n = strlen(s)) > siz-1)
1389 die("stty parameter length too long\n");
1390 *q++ = ' ';
1391 q = memcpy(q, s, n);
1392 q += n;
1393 siz-= n + 1;
1394 }
1395 *q = '\0';
1396 if (system(cmd) != 0)
1397 perror("Couldn't call stty");
1398 }
1399
1400 void
1401 ttynew(void)
1402 {
1403 int m, s;
1404 struct winsize w = {term.row, term.col, 0, 0};
1405
1406 if (opt_io) {
1407 term.mode |= MODE_PRINT;
1408 iofd = (!strcmp(opt_io, "-")) ?
1409 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
1410 if (iofd < 0) {
1411 fprintf(stderr, "Error opening %s:%s\n",
1412 opt_io, strerror(errno));
1413 }
1414 }
1415
1416 if (opt_line) {
1417 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
1418 die("open line failed: %s\n", strerror(errno));
1419 close(0);
1420 dup(cmdfd);
1421 stty();
1422 return;
1423 }
1424
1425 /* seems to work fine on linux, openbsd and freebsd */
1426 if (openpty(&m, &s, NULL, NULL, &w) < 0)
1427 die("openpty failed: %s\n", strerror(errno));
1428
1429 switch (pid = fork()) {
1430 case -1:
1431 die("fork failed\n");
1432 break;
1433 case 0:
1434 close(iofd);
1435 setsid(); /* create a new process group */
1436 dup2(s, 0);
1437 dup2(s, 1);
1438 dup2(s, 2);
1439 if (ioctl(s, TIOCSCTTY, NULL) < 0)
1440 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1441 close(s);
1442 close(m);
1443 execsh();
1444 break;
1445 default:
1446 close(s);
1447 cmdfd = m;
1448 signal(SIGCHLD, sigchld);
1449 break;
1450 }
1451 }
1452
1453 void
1454 ttyread(void)
1455 {
1456 static char buf[BUFSIZ];
1457 static int buflen = 0;
1458 char *ptr;
1459 int charsize; /* size of utf8 char in bytes */
1460 Rune unicodep;
1461 int ret;
1462
1463 /* append read bytes to unprocessed bytes */
1464 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1465 die("Couldn't read from shell: %s\n", strerror(errno));
1466
1467 /* process every complete utf8 char */
1468 buflen += ret;
1469 ptr = buf;
1470 while ((charsize = utf8decode(ptr, &unicodep, buflen))) {
1471 tputc(unicodep);
1472 ptr += charsize;
1473 buflen -= charsize;
1474 }
1475
1476 /* keep any uncomplete utf8 char for the next call */
1477 memmove(buf, ptr, buflen);
1478 }
1479
1480 void
1481 ttywrite(const char *s, size_t n)
1482 {
1483 fd_set wfd;
1484 struct timespec tv;
1485 ssize_t r;
1486
1487 /*
1488 * Remember that we are using a pty, which might be a modem line.
1489 * Writing too much will clog the line. That's why we are doing this
1490 * dance.
1491 * FIXME: Migrate the world to Plan 9.
1492 */
1493 while (n > 0) {
1494 FD_ZERO(&wfd);
1495 FD_SET(cmdfd, &wfd);
1496 tv.tv_sec = 0;
1497 tv.tv_nsec = 0;
1498
1499 /* Check if we can write. */
1500 if (pselect(cmdfd+1, NULL, &wfd, NULL, &tv, NULL) < 0) {
1501 if (errno == EINTR)
1502 continue;
1503 die("select failed: %s\n", strerror(errno));
1504 }
1505 if(!FD_ISSET(cmdfd, &wfd)) {
1506 /* No, then free some buffer space. */
1507 ttyread();
1508 } else {
1509 /*
1510 * Only write 256 bytes at maximum. This seems to be a
1511 * reasonable value for a serial line. Bigger values
1512 * might clog the I/O.
1513 */
1514 r = write(cmdfd, s, (n < 256)? n : 256);
1515 if (r < 0) {
1516 die("write error on tty: %s\n",
1517 strerror(errno));
1518 }
1519 if (r < n) {
1520 /*
1521 * We weren't able to write out everything.
1522 * This means the buffer is getting full
1523 * again. Empty it.
1524 */
1525 ttyread();
1526 n -= r;
1527 s += r;
1528 } else {
1529 /* All bytes have been written. */
1530 break;
1531 }
1532 }
1533 }
1534 }
1535
1536 void
1537 ttysend(char *s, size_t n)
1538 {
1539 int len;
1540 Rune u;
1541
1542 ttywrite(s, n);
1543 if (IS_SET(MODE_ECHO))
1544 while ((len = utf8decode(s, &u, n)) > 0) {
1545 techo(u);
1546 n -= len;
1547 s += len;
1548 }
1549 }
1550
1551 void
1552 ttyresize(void)
1553 {
1554 struct winsize w;
1555
1556 w.ws_row = term.row;
1557 w.ws_col = term.col;
1558 w.ws_xpixel = xw.tw;
1559 w.ws_ypixel = xw.th;
1560 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1561 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1562 }
1563
1564 int
1565 tattrset(int attr)
1566 {
1567 int i, j;
1568
1569 for (i = 0; i < term.row-1; i++) {
1570 for (j = 0; j < term.col-1; j++) {
1571 if (term.line[i][j].mode & attr)
1572 return 1;
1573 }
1574 }
1575
1576 return 0;
1577 }
1578
1579 void
1580 tsetdirt(int top, int bot)
1581 {
1582 int i;
1583
1584 LIMIT(top, 0, term.row-1);
1585 LIMIT(bot, 0, term.row-1);
1586
1587 for (i = top; i <= bot; i++)
1588 term.dirty[i] = 1;
1589 }
1590
1591 void
1592 tsetdirtattr(int attr)
1593 {
1594 int i, j;
1595
1596 for (i = 0; i < term.row-1; i++) {
1597 for (j = 0; j < term.col-1; j++) {
1598 if (term.line[i][j].mode & attr) {
1599 tsetdirt(i, i);
1600 break;
1601 }
1602 }
1603 }
1604 }
1605
1606 void
1607 tfulldirt(void)
1608 {
1609 tsetdirt(0, term.row-1);
1610 }
1611
1612 void
1613 tcursor(int mode)
1614 {
1615 static TCursor c[2];
1616 int alt = IS_SET(MODE_ALTSCREEN);
1617
1618 if (mode == CURSOR_SAVE) {
1619 c[alt] = term.c;
1620 } else if (mode == CURSOR_LOAD) {
1621 term.c = c[alt];
1622 tmoveto(c[alt].x, c[alt].y);
1623 }
1624 }
1625
1626 void
1627 treset(void)
1628 {
1629 uint i;
1630
1631 term.c = (TCursor){{
1632 .mode = ATTR_NULL,
1633 .fg = defaultfg,
1634 .bg = defaultbg
1635 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1636
1637 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1638 for (i = tabspaces; i < term.col; i += tabspaces)
1639 term.tabs[i] = 1;
1640 term.top = 0;
1641 term.bot = term.row - 1;
1642 term.mode = MODE_WRAP;
1643 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1644 term.charset = 0;
1645
1646 for (i = 0; i < 2; i++) {
1647 tmoveto(0, 0);
1648 tcursor(CURSOR_SAVE);
1649 tclearregion(0, 0, term.col-1, term.row-1);
1650 tswapscreen();
1651 }
1652 }
1653
1654 void
1655 tnew(int col, int row)
1656 {
1657 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1658 tresize(col, row);
1659 term.numlock = 1;
1660
1661 treset();
1662 }
1663
1664 void
1665 tswapscreen(void)
1666 {
1667 Line *tmp = term.line;
1668
1669 term.line = term.alt;
1670 term.alt = tmp;
1671 term.mode ^= MODE_ALTSCREEN;
1672 tfulldirt();
1673 }
1674
1675 void
1676 tscrolldown(int orig, int n)
1677 {
1678 int i;
1679 Line temp;
1680
1681 LIMIT(n, 0, term.bot-orig+1);
1682
1683 tsetdirt(orig, term.bot-n);
1684 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1685
1686 for (i = term.bot; i >= orig+n; i--) {
1687 temp = term.line[i];
1688 term.line[i] = term.line[i-n];
1689 term.line[i-n] = temp;
1690 }
1691
1692 selscroll(orig, n);
1693 }
1694
1695 void
1696 tscrollup(int orig, int n)
1697 {
1698 int i;
1699 Line temp;
1700
1701 LIMIT(n, 0, term.bot-orig+1);
1702
1703 tclearregion(0, orig, term.col-1, orig+n-1);
1704 tsetdirt(orig+n, term.bot);
1705
1706 for (i = orig; i <= term.bot-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 selscroll(int orig, int n)
1717 {
1718 if (sel.ob.x == -1)
1719 return;
1720
1721 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1722 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1723 selclear(NULL);
1724 return;
1725 }
1726 if (sel.type == SEL_RECTANGULAR) {
1727 if (sel.ob.y < term.top)
1728 sel.ob.y = term.top;
1729 if (sel.oe.y > term.bot)
1730 sel.oe.y = term.bot;
1731 } else {
1732 if (sel.ob.y < term.top) {
1733 sel.ob.y = term.top;
1734 sel.ob.x = 0;
1735 }
1736 if (sel.oe.y > term.bot) {
1737 sel.oe.y = term.bot;
1738 sel.oe.x = term.col;
1739 }
1740 }
1741 selnormalize();
1742 }
1743 }
1744
1745 void
1746 tnewline(int first_col)
1747 {
1748 int y = term.c.y;
1749
1750 if (y == term.bot) {
1751 tscrollup(term.top, 1);
1752 } else {
1753 y++;
1754 }
1755 tmoveto(first_col ? 0 : term.c.x, y);
1756 }
1757
1758 void
1759 csiparse(void)
1760 {
1761 char *p = csiescseq.buf, *np;
1762 long int v;
1763
1764 csiescseq.narg = 0;
1765 if (*p == '?') {
1766 csiescseq.priv = 1;
1767 p++;
1768 }
1769
1770 csiescseq.buf[csiescseq.len] = '\0';
1771 while (p < csiescseq.buf+csiescseq.len) {
1772 np = NULL;
1773 v = strtol(p, &np, 10);
1774 if (np == p)
1775 v = 0;
1776 if (v == LONG_MAX || v == LONG_MIN)
1777 v = -1;
1778 csiescseq.arg[csiescseq.narg++] = v;
1779 p = np;
1780 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1781 break;
1782 p++;
1783 }
1784 csiescseq.mode[0] = *p++;
1785 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1786 }
1787
1788 /* for absolute user moves, when decom is set */
1789 void
1790 tmoveato(int x, int y)
1791 {
1792 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1793 }
1794
1795 void
1796 tmoveto(int x, int y)
1797 {
1798 int miny, maxy;
1799
1800 if (term.c.state & CURSOR_ORIGIN) {
1801 miny = term.top;
1802 maxy = term.bot;
1803 } else {
1804 miny = 0;
1805 maxy = term.row - 1;
1806 }
1807 term.c.state &= ~CURSOR_WRAPNEXT;
1808 term.c.x = LIMIT(x, 0, term.col-1);
1809 term.c.y = LIMIT(y, miny, maxy);
1810 }
1811
1812 void
1813 tsetchar(Rune u, Glyph *attr, int x, int y)
1814 {
1815 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1816 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1817 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1818 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1819 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1820 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1821 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1822 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1823 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1824 };
1825
1826 /*
1827 * The table is proudly stolen from rxvt.
1828 */
1829 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1830 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1831 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1832
1833 if (term.line[y][x].mode & ATTR_WIDE) {
1834 if (x+1 < term.col) {
1835 term.line[y][x+1].u = ' ';
1836 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1837 }
1838 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1839 term.line[y][x-1].u = ' ';
1840 term.line[y][x-1].mode &= ~ATTR_WIDE;
1841 }
1842
1843 term.dirty[y] = 1;
1844 term.line[y][x] = *attr;
1845 term.line[y][x].u = u;
1846 }
1847
1848 void
1849 tclearregion(int x1, int y1, int x2, int y2)
1850 {
1851 int x, y, temp;
1852 Glyph *gp;
1853
1854 if (x1 > x2)
1855 temp = x1, x1 = x2, x2 = temp;
1856 if (y1 > y2)
1857 temp = y1, y1 = y2, y2 = temp;
1858
1859 LIMIT(x1, 0, term.col-1);
1860 LIMIT(x2, 0, term.col-1);
1861 LIMIT(y1, 0, term.row-1);
1862 LIMIT(y2, 0, term.row-1);
1863
1864 for (y = y1; y <= y2; y++) {
1865 term.dirty[y] = 1;
1866 for (x = x1; x <= x2; x++) {
1867 gp = &term.line[y][x];
1868 if (selected(x, y))
1869 selclear(NULL);
1870 gp->fg = term.c.attr.fg;
1871 gp->bg = term.c.attr.bg;
1872 gp->mode = 0;
1873 gp->u = ' ';
1874 }
1875 }
1876 }
1877
1878 void
1879 tdeletechar(int n)
1880 {
1881 int dst, src, size;
1882 Glyph *line;
1883
1884 LIMIT(n, 0, term.col - term.c.x);
1885
1886 dst = term.c.x;
1887 src = term.c.x + n;
1888 size = term.col - src;
1889 line = term.line[term.c.y];
1890
1891 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1892 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1893 }
1894
1895 void
1896 tinsertblank(int n)
1897 {
1898 int dst, src, size;
1899 Glyph *line;
1900
1901 LIMIT(n, 0, term.col - term.c.x);
1902
1903 dst = term.c.x + n;
1904 src = term.c.x;
1905 size = term.col - dst;
1906 line = term.line[term.c.y];
1907
1908 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1909 tclearregion(src, term.c.y, dst - 1, term.c.y);
1910 }
1911
1912 void
1913 tinsertblankline(int n)
1914 {
1915 if (BETWEEN(term.c.y, term.top, term.bot))
1916 tscrolldown(term.c.y, n);
1917 }
1918
1919 void
1920 tdeleteline(int n)
1921 {
1922 if (BETWEEN(term.c.y, term.top, term.bot))
1923 tscrollup(term.c.y, n);
1924 }
1925
1926 int32_t
1927 tdefcolor(int *attr, int *npar, int l)
1928 {
1929 int32_t idx = -1;
1930 uint r, g, b;
1931
1932 switch (attr[*npar + 1]) {
1933 case 2: /* direct color in RGB space */
1934 if (*npar + 4 >= l) {
1935 fprintf(stderr,
1936 "erresc(38): Incorrect number of parameters (%d)\n",
1937 *npar);
1938 break;
1939 }
1940 r = attr[*npar + 2];
1941 g = attr[*npar + 3];
1942 b = attr[*npar + 4];
1943 *npar += 4;
1944 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1945 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1946 r, g, b);
1947 else
1948 idx = TRUECOLOR(r, g, b);
1949 break;
1950 case 5: /* indexed color */
1951 if (*npar + 2 >= l) {
1952 fprintf(stderr,
1953 "erresc(38): Incorrect number of parameters (%d)\n",
1954 *npar);
1955 break;
1956 }
1957 *npar += 2;
1958 if (!BETWEEN(attr[*npar], 0, 255))
1959 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1960 else
1961 idx = attr[*npar];
1962 break;
1963 case 0: /* implemented defined (only foreground) */
1964 case 1: /* transparent */
1965 case 3: /* direct color in CMY space */
1966 case 4: /* direct color in CMYK space */
1967 default:
1968 fprintf(stderr,
1969 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1970 break;
1971 }
1972
1973 return idx;
1974 }
1975
1976 void
1977 tsetattr(int *attr, int l)
1978 {
1979 int i;
1980 int32_t idx;
1981
1982 for (i = 0; i < l; i++) {
1983 switch (attr[i]) {
1984 case 0:
1985 term.c.attr.mode &= ~(
1986 ATTR_BOLD |
1987 ATTR_FAINT |
1988 ATTR_ITALIC |
1989 ATTR_UNDERLINE |
1990 ATTR_BLINK |
1991 ATTR_REVERSE |
1992 ATTR_INVISIBLE |
1993 ATTR_STRUCK );
1994 term.c.attr.fg = defaultfg;
1995 term.c.attr.bg = defaultbg;
1996 break;
1997 case 1:
1998 term.c.attr.mode |= ATTR_BOLD;
1999 break;
2000 case 2:
2001 term.c.attr.mode |= ATTR_FAINT;
2002 break;
2003 case 3:
2004 term.c.attr.mode |= ATTR_ITALIC;
2005 break;
2006 case 4:
2007 term.c.attr.mode |= ATTR_UNDERLINE;
2008 break;
2009 case 5: /* slow blink */
2010 /* FALLTHROUGH */
2011 case 6: /* rapid blink */
2012 term.c.attr.mode |= ATTR_BLINK;
2013 break;
2014 case 7:
2015 term.c.attr.mode |= ATTR_REVERSE;
2016 break;
2017 case 8:
2018 term.c.attr.mode |= ATTR_INVISIBLE;
2019 break;
2020 case 9:
2021 term.c.attr.mode |= ATTR_STRUCK;
2022 break;
2023 case 22:
2024 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
2025 break;
2026 case 23:
2027 term.c.attr.mode &= ~ATTR_ITALIC;
2028 break;
2029 case 24:
2030 term.c.attr.mode &= ~ATTR_UNDERLINE;
2031 break;
2032 case 25:
2033 term.c.attr.mode &= ~ATTR_BLINK;
2034 break;
2035 case 27:
2036 term.c.attr.mode &= ~ATTR_REVERSE;
2037 break;
2038 case 28:
2039 term.c.attr.mode &= ~ATTR_INVISIBLE;
2040 break;
2041 case 29:
2042 term.c.attr.mode &= ~ATTR_STRUCK;
2043 break;
2044 case 38:
2045 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2046 term.c.attr.fg = idx;
2047 break;
2048 case 39:
2049 term.c.attr.fg = defaultfg;
2050 break;
2051 case 48:
2052 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2053 term.c.attr.bg = idx;
2054 break;
2055 case 49:
2056 term.c.attr.bg = defaultbg;
2057 break;
2058 default:
2059 if (BETWEEN(attr[i], 30, 37)) {
2060 term.c.attr.fg = attr[i] - 30;
2061 } else if (BETWEEN(attr[i], 40, 47)) {
2062 term.c.attr.bg = attr[i] - 40;
2063 } else if (BETWEEN(attr[i], 90, 97)) {
2064 term.c.attr.fg = attr[i] - 90 + 8;
2065 } else if (BETWEEN(attr[i], 100, 107)) {
2066 term.c.attr.bg = attr[i] - 100 + 8;
2067 } else {
2068 fprintf(stderr,
2069 "erresc(default): gfx attr %d unknown\n",
2070 attr[i]), csidump();
2071 }
2072 break;
2073 }
2074 }
2075 }
2076
2077 void
2078 tsetscroll(int t, int b)
2079 {
2080 int temp;
2081
2082 LIMIT(t, 0, term.row-1);
2083 LIMIT(b, 0, term.row-1);
2084 if (t > b) {
2085 temp = t;
2086 t = b;
2087 b = temp;
2088 }
2089 term.top = t;
2090 term.bot = b;
2091 }
2092
2093 void
2094 tsetmode(int priv, int set, int *args, int narg)
2095 {
2096 int *lim, mode;
2097 int alt;
2098
2099 for (lim = args + narg; args < lim; ++args) {
2100 if (priv) {
2101 switch (*args) {
2102 case 1: /* DECCKM -- Cursor key */
2103 MODBIT(term.mode, set, MODE_APPCURSOR);
2104 break;
2105 case 5: /* DECSCNM -- Reverse video */
2106 mode = term.mode;
2107 MODBIT(term.mode, set, MODE_REVERSE);
2108 if (mode != term.mode)
2109 redraw();
2110 break;
2111 case 6: /* DECOM -- Origin */
2112 MODBIT(term.c.state, set, CURSOR_ORIGIN);
2113 tmoveato(0, 0);
2114 break;
2115 case 7: /* DECAWM -- Auto wrap */
2116 MODBIT(term.mode, set, MODE_WRAP);
2117 break;
2118 case 0: /* Error (IGNORED) */
2119 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
2120 case 3: /* DECCOLM -- Column (IGNORED) */
2121 case 4: /* DECSCLM -- Scroll (IGNORED) */
2122 case 8: /* DECARM -- Auto repeat (IGNORED) */
2123 case 18: /* DECPFF -- Printer feed (IGNORED) */
2124 case 19: /* DECPEX -- Printer extent (IGNORED) */
2125 case 42: /* DECNRCM -- National characters (IGNORED) */
2126 case 12: /* att610 -- Start blinking cursor (IGNORED) */
2127 break;
2128 case 25: /* DECTCEM -- Text Cursor Enable Mode */
2129 MODBIT(term.mode, !set, MODE_HIDE);
2130 break;
2131 case 9: /* X10 mouse compatibility mode */
2132 xsetpointermotion(0);
2133 MODBIT(term.mode, 0, MODE_MOUSE);
2134 MODBIT(term.mode, set, MODE_MOUSEX10);
2135 break;
2136 case 1000: /* 1000: report button press */
2137 xsetpointermotion(0);
2138 MODBIT(term.mode, 0, MODE_MOUSE);
2139 MODBIT(term.mode, set, MODE_MOUSEBTN);
2140 break;
2141 case 1002: /* 1002: report motion on button press */
2142 xsetpointermotion(0);
2143 MODBIT(term.mode, 0, MODE_MOUSE);
2144 MODBIT(term.mode, set, MODE_MOUSEMOTION);
2145 break;
2146 case 1003: /* 1003: enable all mouse motions */
2147 xsetpointermotion(set);
2148 MODBIT(term.mode, 0, MODE_MOUSE);
2149 MODBIT(term.mode, set, MODE_MOUSEMANY);
2150 break;
2151 case 1004: /* 1004: send focus events to tty */
2152 MODBIT(term.mode, set, MODE_FOCUS);
2153 break;
2154 case 1006: /* 1006: extended reporting mode */
2155 MODBIT(term.mode, set, MODE_MOUSESGR);
2156 break;
2157 case 1034:
2158 MODBIT(term.mode, set, MODE_8BIT);
2159 break;
2160 case 1049: /* swap screen & set/restore cursor as xterm */
2161 if (!allowaltscreen)
2162 break;
2163 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2164 /* FALLTHROUGH */
2165 case 47: /* swap screen */
2166 case 1047:
2167 if (!allowaltscreen)
2168 break;
2169 alt = IS_SET(MODE_ALTSCREEN);
2170 if (alt) {
2171 tclearregion(0, 0, term.col-1,
2172 term.row-1);
2173 }
2174 if (set ^ alt) /* set is always 1 or 0 */
2175 tswapscreen();
2176 if (*args != 1049)
2177 break;
2178 /* FALLTHROUGH */
2179 case 1048:
2180 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2181 break;
2182 case 2004: /* 2004: bracketed paste mode */
2183 MODBIT(term.mode, set, MODE_BRCKTPASTE);
2184 break;
2185 /* Not implemented mouse modes. See comments there. */
2186 case 1001: /* mouse highlight mode; can hang the
2187 terminal by design when implemented. */
2188 case 1005: /* UTF-8 mouse mode; will confuse
2189 applications not supporting UTF-8
2190 and luit. */
2191 case 1015: /* urxvt mangled mouse mode; incompatible
2192 and can be mistaken for other control
2193 codes. */
2194 default:
2195 fprintf(stderr,
2196 "erresc: unknown private set/reset mode %d\n",
2197 *args);
2198 break;
2199 }
2200 } else {
2201 switch (*args) {
2202 case 0: /* Error (IGNORED) */
2203 break;
2204 case 2: /* KAM -- keyboard action */
2205 MODBIT(term.mode, set, MODE_KBDLOCK);
2206 break;
2207 case 4: /* IRM -- Insertion-replacement */
2208 MODBIT(term.mode, set, MODE_INSERT);
2209 break;
2210 case 12: /* SRM -- Send/Receive */
2211 MODBIT(term.mode, !set, MODE_ECHO);
2212 break;
2213 case 20: /* LNM -- Linefeed/new line */
2214 MODBIT(term.mode, set, MODE_CRLF);
2215 break;
2216 default:
2217 fprintf(stderr,
2218 "erresc: unknown set/reset mode %d\n",
2219 *args);
2220 break;
2221 }
2222 }
2223 }
2224 }
2225
2226 void
2227 csihandle(void)
2228 {
2229 char buf[40];
2230 int len;
2231
2232 switch (csiescseq.mode[0]) {
2233 default:
2234 unknown:
2235 fprintf(stderr, "erresc: unknown csi ");
2236 csidump();
2237 /* die(""); */
2238 break;
2239 case '@': /* ICH -- Insert <n> blank char */
2240 DEFAULT(csiescseq.arg[0], 1);
2241 tinsertblank(csiescseq.arg[0]);
2242 break;
2243 case 'A': /* CUU -- Cursor <n> Up */
2244 DEFAULT(csiescseq.arg[0], 1);
2245 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2246 break;
2247 case 'B': /* CUD -- Cursor <n> Down */
2248 case 'e': /* VPR --Cursor <n> Down */
2249 DEFAULT(csiescseq.arg[0], 1);
2250 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2251 break;
2252 case 'i': /* MC -- Media Copy */
2253 switch (csiescseq.arg[0]) {
2254 case 0:
2255 tdump();
2256 break;
2257 case 1:
2258 tdumpline(term.c.y);
2259 break;
2260 case 2:
2261 tdumpsel();
2262 break;
2263 case 4:
2264 term.mode &= ~MODE_PRINT;
2265 break;
2266 case 5:
2267 term.mode |= MODE_PRINT;
2268 break;
2269 }
2270 break;
2271 case 'c': /* DA -- Device Attributes */
2272 if (csiescseq.arg[0] == 0)
2273 ttywrite(vtiden, sizeof(vtiden) - 1);
2274 break;
2275 case 'C': /* CUF -- Cursor <n> Forward */
2276 case 'a': /* HPR -- Cursor <n> Forward */
2277 DEFAULT(csiescseq.arg[0], 1);
2278 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2279 break;
2280 case 'D': /* CUB -- Cursor <n> Backward */
2281 DEFAULT(csiescseq.arg[0], 1);
2282 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2283 break;
2284 case 'E': /* CNL -- Cursor <n> Down and first col */
2285 DEFAULT(csiescseq.arg[0], 1);
2286 tmoveto(0, term.c.y+csiescseq.arg[0]);
2287 break;
2288 case 'F': /* CPL -- Cursor <n> Up and first col */
2289 DEFAULT(csiescseq.arg[0], 1);
2290 tmoveto(0, term.c.y-csiescseq.arg[0]);
2291 break;
2292 case 'g': /* TBC -- Tabulation clear */
2293 switch (csiescseq.arg[0]) {
2294 case 0: /* clear current tab stop */
2295 term.tabs[term.c.x] = 0;
2296 break;
2297 case 3: /* clear all the tabs */
2298 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2299 break;
2300 default:
2301 goto unknown;
2302 }
2303 break;
2304 case 'G': /* CHA -- Move to <col> */
2305 case '`': /* HPA */
2306 DEFAULT(csiescseq.arg[0], 1);
2307 tmoveto(csiescseq.arg[0]-1, term.c.y);
2308 break;
2309 case 'H': /* CUP -- Move to <row> <col> */
2310 case 'f': /* HVP */
2311 DEFAULT(csiescseq.arg[0], 1);
2312 DEFAULT(csiescseq.arg[1], 1);
2313 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2314 break;
2315 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2316 DEFAULT(csiescseq.arg[0], 1);
2317 tputtab(csiescseq.arg[0]);
2318 break;
2319 case 'J': /* ED -- Clear screen */
2320 selclear(NULL);
2321 switch (csiescseq.arg[0]) {
2322 case 0: /* below */
2323 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2324 if (term.c.y < term.row-1) {
2325 tclearregion(0, term.c.y+1, term.col-1,
2326 term.row-1);
2327 }
2328 break;
2329 case 1: /* above */
2330 if (term.c.y > 1)
2331 tclearregion(0, 0, term.col-1, term.c.y-1);
2332 tclearregion(0, term.c.y, term.c.x, term.c.y);
2333 break;
2334 case 2: /* all */
2335 tclearregion(0, 0, term.col-1, term.row-1);
2336 break;
2337 default:
2338 goto unknown;
2339 }
2340 break;
2341 case 'K': /* EL -- Clear line */
2342 switch (csiescseq.arg[0]) {
2343 case 0: /* right */
2344 tclearregion(term.c.x, term.c.y, term.col-1,
2345 term.c.y);
2346 break;
2347 case 1: /* left */
2348 tclearregion(0, term.c.y, term.c.x, term.c.y);
2349 break;
2350 case 2: /* all */
2351 tclearregion(0, term.c.y, term.col-1, term.c.y);
2352 break;
2353 }
2354 break;
2355 case 'S': /* SU -- Scroll <n> line up */
2356 DEFAULT(csiescseq.arg[0], 1);
2357 tscrollup(term.top, csiescseq.arg[0]);
2358 break;
2359 case 'T': /* SD -- Scroll <n> line down */
2360 DEFAULT(csiescseq.arg[0], 1);
2361 tscrolldown(term.top, csiescseq.arg[0]);
2362 break;
2363 case 'L': /* IL -- Insert <n> blank lines */
2364 DEFAULT(csiescseq.arg[0], 1);
2365 tinsertblankline(csiescseq.arg[0]);
2366 break;
2367 case 'l': /* RM -- Reset Mode */
2368 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2369 break;
2370 case 'M': /* DL -- Delete <n> lines */
2371 DEFAULT(csiescseq.arg[0], 1);
2372 tdeleteline(csiescseq.arg[0]);
2373 break;
2374 case 'X': /* ECH -- Erase <n> char */
2375 DEFAULT(csiescseq.arg[0], 1);
2376 tclearregion(term.c.x, term.c.y,
2377 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2378 break;
2379 case 'P': /* DCH -- Delete <n> char */
2380 DEFAULT(csiescseq.arg[0], 1);
2381 tdeletechar(csiescseq.arg[0]);
2382 break;
2383 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2384 DEFAULT(csiescseq.arg[0], 1);
2385 tputtab(-csiescseq.arg[0]);
2386 break;
2387 case 'd': /* VPA -- Move to <row> */
2388 DEFAULT(csiescseq.arg[0], 1);
2389 tmoveato(term.c.x, csiescseq.arg[0]-1);
2390 break;
2391 case 'h': /* SM -- Set terminal mode */
2392 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2393 break;
2394 case 'm': /* SGR -- Terminal attribute (color) */
2395 tsetattr(csiescseq.arg, csiescseq.narg);
2396 break;
2397 case 'n': /* DSR – Device Status Report (cursor position) */
2398 if (csiescseq.arg[0] == 6) {
2399 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2400 term.c.y+1, term.c.x+1);
2401 ttywrite(buf, len);
2402 }
2403 break;
2404 case 'r': /* DECSTBM -- Set Scrolling Region */
2405 if (csiescseq.priv) {
2406 goto unknown;
2407 } else {
2408 DEFAULT(csiescseq.arg[0], 1);
2409 DEFAULT(csiescseq.arg[1], term.row);
2410 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2411 tmoveato(0, 0);
2412 }
2413 break;
2414 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2415 tcursor(CURSOR_SAVE);
2416 break;
2417 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2418 tcursor(CURSOR_LOAD);
2419 break;
2420 case ' ':
2421 switch (csiescseq.mode[1]) {
2422 case 'q': /* DECSCUSR -- Set Cursor Style */
2423 DEFAULT(csiescseq.arg[0], 1);
2424 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2425 goto unknown;
2426 }
2427 xw.cursor = csiescseq.arg[0];
2428 break;
2429 default:
2430 goto unknown;
2431 }
2432 break;
2433 }
2434 }
2435
2436 void
2437 csidump(void)
2438 {
2439 int i;
2440 uint c;
2441
2442 printf("ESC[");
2443 for (i = 0; i < csiescseq.len; i++) {
2444 c = csiescseq.buf[i] & 0xff;
2445 if (isprint(c)) {
2446 putchar(c);
2447 } else if (c == '\n') {
2448 printf("(\\n)");
2449 } else if (c == '\r') {
2450 printf("(\\r)");
2451 } else if (c == 0x1b) {
2452 printf("(\\e)");
2453 } else {
2454 printf("(%02x)", c);
2455 }
2456 }
2457 putchar('\n');
2458 }
2459
2460 void
2461 csireset(void)
2462 {
2463 memset(&csiescseq, 0, sizeof(csiescseq));
2464 }
2465
2466 void
2467 strhandle(void)
2468 {
2469 char *p = NULL;
2470 int j, narg, par;
2471
2472 term.esc &= ~(ESC_STR_END|ESC_STR);
2473 strparse();
2474 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2475
2476 switch (strescseq.type) {
2477 case ']': /* OSC -- Operating System Command */
2478 switch (par) {
2479 case 0:
2480 case 1:
2481 case 2:
2482 if (narg > 1)
2483 xsettitle(strescseq.args[1]);
2484 return;
2485 case 4: /* color set */
2486 if (narg < 3)
2487 break;
2488 p = strescseq.args[2];
2489 /* FALLTHROUGH */
2490 case 104: /* color reset, here p = NULL */
2491 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2492 if (xsetcolorname(j, p)) {
2493 fprintf(stderr, "erresc: invalid color %s\n", p);
2494 } else {
2495 /*
2496 * TODO if defaultbg color is changed, borders
2497 * are dirty
2498 */
2499 redraw();
2500 }
2501 return;
2502 }
2503 break;
2504 case 'k': /* old title set compatibility */
2505 xsettitle(strescseq.args[0]);
2506 return;
2507 case 'P': /* DCS -- Device Control String */
2508 case '_': /* APC -- Application Program Command */
2509 case '^': /* PM -- Privacy Message */
2510 return;
2511 }
2512
2513 fprintf(stderr, "erresc: unknown str ");
2514 strdump();
2515 }
2516
2517 void
2518 strparse(void)
2519 {
2520 int c;
2521 char *p = strescseq.buf;
2522
2523 strescseq.narg = 0;
2524 strescseq.buf[strescseq.len] = '\0';
2525
2526 if (*p == '\0')
2527 return;
2528
2529 while (strescseq.narg < STR_ARG_SIZ) {
2530 strescseq.args[strescseq.narg++] = p;
2531 while ((c = *p) != ';' && c != '\0')
2532 ++p;
2533 if (c == '\0')
2534 return;
2535 *p++ = '\0';
2536 }
2537 }
2538
2539 void
2540 strdump(void)
2541 {
2542 int i;
2543 uint c;
2544
2545 printf("ESC%c", strescseq.type);
2546 for (i = 0; i < strescseq.len; i++) {
2547 c = strescseq.buf[i] & 0xff;
2548 if (c == '\0') {
2549 return;
2550 } else if (isprint(c)) {
2551 putchar(c);
2552 } else if (c == '\n') {
2553 printf("(\\n)");
2554 } else if (c == '\r') {
2555 printf("(\\r)");
2556 } else if (c == 0x1b) {
2557 printf("(\\e)");
2558 } else {
2559 printf("(%02x)", c);
2560 }
2561 }
2562 printf("ESC\\\n");
2563 }
2564
2565 void
2566 strreset(void)
2567 {
2568 memset(&strescseq, 0, sizeof(strescseq));
2569 }
2570
2571 void
2572 tprinter(char *s, size_t len)
2573 {
2574 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
2575 fprintf(stderr, "Error writing in %s:%s\n",
2576 opt_io, strerror(errno));
2577 close(iofd);
2578 iofd = -1;
2579 }
2580 }
2581
2582 void
2583 toggleprinter(const Arg *arg)
2584 {
2585 term.mode ^= MODE_PRINT;
2586 }
2587
2588 void
2589 printscreen(const Arg *arg)
2590 {
2591 tdump();
2592 }
2593
2594 void
2595 printsel(const Arg *arg)
2596 {
2597 tdumpsel();
2598 }
2599
2600 void
2601 tdumpsel(void)
2602 {
2603 char *ptr;
2604
2605 if ((ptr = getsel())) {
2606 tprinter(ptr, strlen(ptr));
2607 free(ptr);
2608 }
2609 }
2610
2611 void
2612 tdumpline(int n)
2613 {
2614 char buf[UTF_SIZ];
2615 Glyph *bp, *end;
2616
2617 bp = &term.line[n][0];
2618 end = &bp[MIN(tlinelen(n), term.col) - 1];
2619 if (bp != end || bp->u != ' ') {
2620 for ( ;bp <= end; ++bp)
2621 tprinter(buf, utf8encode(bp->u, buf));
2622 }
2623 tprinter("\n", 1);
2624 }
2625
2626 void
2627 tdump(void)
2628 {
2629 int i;
2630
2631 for (i = 0; i < term.row; ++i)
2632 tdumpline(i);
2633 }
2634
2635 void
2636 tputtab(int n)
2637 {
2638 uint x = term.c.x;
2639
2640 if (n > 0) {
2641 while (x < term.col && n--)
2642 for (++x; x < term.col && !term.tabs[x]; ++x)
2643 /* nothing */ ;
2644 } else if (n < 0) {
2645 while (x > 0 && n++)
2646 for (--x; x > 0 && !term.tabs[x]; --x)
2647 /* nothing */ ;
2648 }
2649 term.c.x = LIMIT(x, 0, term.col-1);
2650 }
2651
2652 void
2653 techo(Rune u)
2654 {
2655 if (ISCONTROL(u)) { /* control code */
2656 if (u & 0x80) {
2657 u &= 0x7f;
2658 tputc('^');
2659 tputc('[');
2660 } else if (u != '\n' && u != '\r' && u != '\t') {
2661 u ^= 0x40;
2662 tputc('^');
2663 }
2664 }
2665 tputc(u);
2666 }
2667
2668 void
2669 tdeftran(char ascii)
2670 {
2671 static char cs[] = "0B";
2672 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2673 char *p;
2674
2675 if ((p = strchr(cs, ascii)) == NULL) {
2676 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2677 } else {
2678 term.trantbl[term.icharset] = vcs[p - cs];
2679 }
2680 }
2681
2682 void
2683 tdectest(char c)
2684 {
2685 int x, y;
2686
2687 if (c == '8') { /* DEC screen alignment test. */
2688 for (x = 0; x < term.col; ++x) {
2689 for (y = 0; y < term.row; ++y)
2690 tsetchar('E', &term.c.attr, x, y);
2691 }
2692 }
2693 }
2694
2695 void
2696 tstrsequence(uchar c)
2697 {
2698 switch (c) {
2699 case 0x90: /* DCS -- Device Control String */
2700 c = 'P';
2701 break;
2702 case 0x9f: /* APC -- Application Program Command */
2703 c = '_';
2704 break;
2705 case 0x9e: /* PM -- Privacy Message */
2706 c = '^';
2707 break;
2708 case 0x9d: /* OSC -- Operating System Command */
2709 c = ']';
2710 break;
2711 }
2712 strreset();
2713 strescseq.type = c;
2714 term.esc |= ESC_STR;
2715 }
2716
2717 void
2718 tcontrolcode(uchar ascii)
2719 {
2720 switch (ascii) {
2721 case '\t': /* HT */
2722 tputtab(1);
2723 return;
2724 case '\b': /* BS */
2725 tmoveto(term.c.x-1, term.c.y);
2726 return;
2727 case '\r': /* CR */
2728 tmoveto(0, term.c.y);
2729 return;
2730 case '\f': /* LF */
2731 case '\v': /* VT */
2732 case '\n': /* LF */
2733 /* go to first col if the mode is set */
2734 tnewline(IS_SET(MODE_CRLF));
2735 return;
2736 case '\a': /* BEL */
2737 if (term.esc & ESC_STR_END) {
2738 /* backwards compatibility to xterm */
2739 strhandle();
2740 } else {
2741 if (!(xw.state & WIN_FOCUSED))
2742 xseturgency(1);
2743 if (bellvolume)
2744 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2745 }
2746 break;
2747 case '\033': /* ESC */
2748 csireset();
2749 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2750 term.esc |= ESC_START;
2751 return;
2752 case '\016': /* SO (LS1 -- Locking shift 1) */
2753 case '\017': /* SI (LS0 -- Locking shift 0) */
2754 term.charset = 1 - (ascii - '\016');
2755 return;
2756 case '\032': /* SUB */
2757 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2758 case '\030': /* CAN */
2759 csireset();
2760 break;
2761 case '\005': /* ENQ (IGNORED) */
2762 case '\000': /* NUL (IGNORED) */
2763 case '\021': /* XON (IGNORED) */
2764 case '\023': /* XOFF (IGNORED) */
2765 case 0177: /* DEL (IGNORED) */
2766 return;
2767 case 0x84: /* TODO: IND */
2768 break;
2769 case 0x85: /* NEL -- Next line */
2770 tnewline(1); /* always go to first col */
2771 break;
2772 case 0x88: /* HTS -- Horizontal tab stop */
2773 term.tabs[term.c.x] = 1;
2774 break;
2775 case 0x8d: /* TODO: RI */
2776 case 0x8e: /* TODO: SS2 */
2777 case 0x8f: /* TODO: SS3 */
2778 case 0x98: /* TODO: SOS */
2779 break;
2780 case 0x9a: /* DECID -- Identify Terminal */
2781 ttywrite(vtiden, sizeof(vtiden) - 1);
2782 break;
2783 case 0x9b: /* TODO: CSI */
2784 case 0x9c: /* TODO: ST */
2785 break;
2786 case 0x90: /* DCS -- Device Control String */
2787 case 0x9f: /* APC -- Application Program Command */
2788 case 0x9e: /* PM -- Privacy Message */
2789 case 0x9d: /* OSC -- Operating System Command */
2790 tstrsequence(ascii);
2791 return;
2792 }
2793 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2794 term.esc &= ~(ESC_STR_END|ESC_STR);
2795 }
2796
2797 /*
2798 * returns 1 when the sequence is finished and it hasn't to read
2799 * more characters for this sequence, otherwise 0
2800 */
2801 int
2802 eschandle(uchar ascii)
2803 {
2804 switch (ascii) {
2805 case '[':
2806 term.esc |= ESC_CSI;
2807 return 0;
2808 case '#':
2809 term.esc |= ESC_TEST;
2810 return 0;
2811 case 'P': /* DCS -- Device Control String */
2812 case '_': /* APC -- Application Program Command */
2813 case '^': /* PM -- Privacy Message */
2814 case ']': /* OSC -- Operating System Command */
2815 case 'k': /* old title set compatibility */
2816 tstrsequence(ascii);
2817 return 0;
2818 case 'n': /* LS2 -- Locking shift 2 */
2819 case 'o': /* LS3 -- Locking shift 3 */
2820 term.charset = 2 + (ascii - 'n');
2821 break;
2822 case '(': /* GZD4 -- set primary charset G0 */
2823 case ')': /* G1D4 -- set secondary charset G1 */
2824 case '*': /* G2D4 -- set tertiary charset G2 */
2825 case '+': /* G3D4 -- set quaternary charset G3 */
2826 term.icharset = ascii - '(';
2827 term.esc |= ESC_ALTCHARSET;
2828 return 0;
2829 case 'D': /* IND -- Linefeed */
2830 if (term.c.y == term.bot) {
2831 tscrollup(term.top, 1);
2832 } else {
2833 tmoveto(term.c.x, term.c.y+1);
2834 }
2835 break;
2836 case 'E': /* NEL -- Next line */
2837 tnewline(1); /* always go to first col */
2838 break;
2839 case 'H': /* HTS -- Horizontal tab stop */
2840 term.tabs[term.c.x] = 1;
2841 break;
2842 case 'M': /* RI -- Reverse index */
2843 if (term.c.y == term.top) {
2844 tscrolldown(term.top, 1);
2845 } else {
2846 tmoveto(term.c.x, term.c.y-1);
2847 }
2848 break;
2849 case 'Z': /* DECID -- Identify Terminal */
2850 ttywrite(vtiden, sizeof(vtiden) - 1);
2851 break;
2852 case 'c': /* RIS -- Reset to inital state */
2853 treset();
2854 xresettitle();
2855 xloadcols();
2856 break;
2857 case '=': /* DECPAM -- Application keypad */
2858 term.mode |= MODE_APPKEYPAD;
2859 break;
2860 case '>': /* DECPNM -- Normal keypad */
2861 term.mode &= ~MODE_APPKEYPAD;
2862 break;
2863 case '7': /* DECSC -- Save Cursor */
2864 tcursor(CURSOR_SAVE);
2865 break;
2866 case '8': /* DECRC -- Restore Cursor */
2867 tcursor(CURSOR_LOAD);
2868 break;
2869 case '\\': /* ST -- String Terminator */
2870 if (term.esc & ESC_STR_END)
2871 strhandle();
2872 break;
2873 default:
2874 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2875 (uchar) ascii, isprint(ascii)? ascii:'.');
2876 break;
2877 }
2878 return 1;
2879 }
2880
2881 void
2882 tputc(Rune u)
2883 {
2884 char c[UTF_SIZ];
2885 int control;
2886 int width, len;
2887 Glyph *gp;
2888
2889 len = utf8encode(u, c);
2890 if ((width = wcwidth(u)) == -1) {
2891 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
2892 width = 1;
2893 }
2894
2895 if (IS_SET(MODE_PRINT))
2896 tprinter(c, len);
2897 control = ISCONTROL(u);
2898
2899 /*
2900 * STR sequence must be checked before anything else
2901 * because it uses all following characters until it
2902 * receives a ESC, a SUB, a ST or any other C1 control
2903 * character.
2904 */
2905 if (term.esc & ESC_STR) {
2906 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
2907 ISCONTROLC1(u)) {
2908 term.esc &= ~(ESC_START|ESC_STR);
2909 term.esc |= ESC_STR_END;
2910 } else if (strescseq.len + len < sizeof(strescseq.buf) - 1) {
2911 memmove(&strescseq.buf[strescseq.len], c, len);
2912 strescseq.len += len;
2913 return;
2914 } else {
2915 /*
2916 * Here is a bug in terminals. If the user never sends
2917 * some code to stop the str or esc command, then st
2918 * will stop responding. But this is better than
2919 * silently failing with unknown characters. At least
2920 * then users will report back.
2921 *
2922 * In the case users ever get fixed, here is the code:
2923 */
2924 /*
2925 * term.esc = 0;
2926 * strhandle();
2927 */
2928 return;
2929 }
2930 }
2931
2932 /*
2933 * Actions of control codes must be performed as soon they arrive
2934 * because they can be embedded inside a control sequence, and
2935 * they must not cause conflicts with sequences.
2936 */
2937 if (control) {
2938 tcontrolcode(u);
2939 /*
2940 * control codes are not shown ever
2941 */
2942 return;
2943 } else if (term.esc & ESC_START) {
2944 if (term.esc & ESC_CSI) {
2945 csiescseq.buf[csiescseq.len++] = u;
2946 if (BETWEEN(u, 0x40, 0x7E)
2947 || csiescseq.len >= \
2948 sizeof(csiescseq.buf)-1) {
2949 term.esc = 0;
2950 csiparse();
2951 csihandle();
2952 }
2953 return;
2954 } else if (term.esc & ESC_ALTCHARSET) {
2955 tdeftran(u);
2956 } else if (term.esc & ESC_TEST) {
2957 tdectest(u);
2958 } else {
2959 if (!eschandle(u))
2960 return;
2961 /* sequence already finished */
2962 }
2963 term.esc = 0;
2964 /*
2965 * All characters which form part of a sequence are not
2966 * printed
2967 */
2968 return;
2969 }
2970 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
2971 selclear(NULL);
2972
2973 gp = &term.line[term.c.y][term.c.x];
2974 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2975 gp->mode |= ATTR_WRAP;
2976 tnewline(1);
2977 gp = &term.line[term.c.y][term.c.x];
2978 }
2979
2980 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
2981 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
2982
2983 if (term.c.x+width > term.col) {
2984 tnewline(1);
2985 gp = &term.line[term.c.y][term.c.x];
2986 }
2987
2988 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
2989
2990 if (width == 2) {
2991 gp->mode |= ATTR_WIDE;
2992 if (term.c.x+1 < term.col) {
2993 gp[1].u = '\0';
2994 gp[1].mode = ATTR_WDUMMY;
2995 }
2996 }
2997 if (term.c.x+width < term.col) {
2998 tmoveto(term.c.x+width, term.c.y);
2999 } else {
3000 term.c.state |= CURSOR_WRAPNEXT;
3001 }
3002 }
3003
3004 void
3005 tresize(int col, int row)
3006 {
3007 int i;
3008 int minrow = MIN(row, term.row);
3009 int mincol = MIN(col, term.col);
3010 int *bp;
3011 TCursor c;
3012
3013 if (col < 1 || row < 1) {
3014 fprintf(stderr,
3015 "tresize: error resizing to %dx%d\n", col, row);
3016 return;
3017 }
3018
3019 /*
3020 * slide screen to keep cursor where we expect it -
3021 * tscrollup would work here, but we can optimize to
3022 * memmove because we're freeing the earlier lines
3023 */
3024 for (i = 0; i <= term.c.y - row; i++) {
3025 free(term.line[i]);
3026 free(term.alt[i]);
3027 }
3028 /* ensure that both src and dst are not NULL */
3029 if (i > 0) {
3030 memmove(term.line, term.line + i, row * sizeof(Line));
3031 memmove(term.alt, term.alt + i, row * sizeof(Line));
3032 }
3033 for (i += row; i < term.row; i++) {
3034 free(term.line[i]);
3035 free(term.alt[i]);
3036 }
3037
3038 /* resize to new width */
3039 term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
3040
3041 /* resize to new height */
3042 term.line = xrealloc(term.line, row * sizeof(Line));
3043 term.alt = xrealloc(term.alt, row * sizeof(Line));
3044 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
3045 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
3046
3047 /* resize each row to new width, zero-pad if needed */
3048 for (i = 0; i < minrow; i++) {
3049 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
3050 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
3051 }
3052
3053 /* allocate any new rows */
3054 for (/* i == minrow */; i < row; i++) {
3055 term.line[i] = xmalloc(col * sizeof(Glyph));
3056 term.alt[i] = xmalloc(col * sizeof(Glyph));
3057 }
3058 if (col > term.col) {
3059 bp = term.tabs + term.col;
3060
3061 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
3062 while (--bp > term.tabs && !*bp)
3063 /* nothing */ ;
3064 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
3065 *bp = 1;
3066 }
3067 /* update terminal size */
3068 term.col = col;
3069 term.row = row;
3070 /* reset scrolling region */
3071 tsetscroll(0, row-1);
3072 /* make use of the LIMIT in tmoveto */
3073 tmoveto(term.c.x, term.c.y);
3074 /* Clearing both screens (it makes dirty all lines) */
3075 c = term.c;
3076 for (i = 0; i < 2; i++) {
3077 if (mincol < col && 0 < minrow) {
3078 tclearregion(mincol, 0, col - 1, minrow - 1);
3079 }
3080 if (0 < col && minrow < row) {
3081 tclearregion(0, minrow, col - 1, row - 1);
3082 }
3083 tswapscreen();
3084 tcursor(CURSOR_LOAD);
3085 }
3086 term.c = c;
3087 }
3088
3089 void
3090 xresize(int col, int row)
3091 {
3092 xw.tw = MAX(1, col * xw.cw);
3093 xw.th = MAX(1, row * xw.ch);
3094
3095 XFreePixmap(xw.dpy, xw.buf);
3096 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3097 DefaultDepth(xw.dpy, xw.scr));
3098 XftDrawChange(xw.draw, xw.buf);
3099 xclear(0, 0, xw.w, xw.h);
3100 }
3101
3102 ushort
3103 sixd_to_16bit(int x)
3104 {
3105 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
3106 }
3107
3108 int
3109 xloadcolor(int i, const char *name, Color *ncolor)
3110 {
3111 XRenderColor color = { .alpha = 0xffff };
3112
3113 if (!name) {
3114 if (BETWEEN(i, 16, 255)) { /* 256 color */
3115 if (i < 6*6*6+16) { /* same colors as xterm */
3116 color.red = sixd_to_16bit( ((i-16)/36)%6 );
3117 color.green = sixd_to_16bit( ((i-16)/6) %6 );
3118 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
3119 } else { /* greyscale */
3120 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
3121 color.green = color.blue = color.red;
3122 }
3123 return XftColorAllocValue(xw.dpy, xw.vis,
3124 xw.cmap, &color, ncolor);
3125 } else
3126 name = colorname[i];
3127 }
3128 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
3129 }
3130
3131 void
3132 xloadcols(void)
3133 {
3134 int i;
3135 static int loaded;
3136 Color *cp;
3137
3138 if (loaded) {
3139 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
3140 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
3141 }
3142
3143 for (i = 0; i < LEN(dc.col); i++)
3144 if (!xloadcolor(i, NULL, &dc.col[i])) {
3145 if (colorname[i])
3146 die("Could not allocate color '%s'\n", colorname[i]);
3147 else
3148 die("Could not allocate color %d\n", i);
3149 }
3150 loaded = 1;
3151 }
3152
3153 int
3154 xsetcolorname(int x, const char *name)
3155 {
3156 Color ncolor;
3157
3158 if (!BETWEEN(x, 0, LEN(dc.col)))
3159 return 1;
3160
3161
3162 if (!xloadcolor(x, name, &ncolor))
3163 return 1;
3164
3165 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
3166 dc.col[x] = ncolor;
3167 return 0;
3168 }
3169
3170 void
3171 xtermclear(int col1, int row1, int col2, int row2)
3172 {
3173 XftDrawRect(xw.draw,
3174 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
3175 borderpx + col1 * xw.cw,
3176 borderpx + row1 * xw.ch,
3177 (col2-col1+1) * xw.cw,
3178 (row2-row1+1) * xw.ch);
3179 }
3180
3181 /*
3182 * Absolute coordinates.
3183 */
3184 void
3185 xclear(int x1, int y1, int x2, int y2)
3186 {
3187 XftDrawRect(xw.draw,
3188 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
3189 x1, y1, x2-x1, y2-y1);
3190 }
3191
3192 void
3193 xhints(void)
3194 {
3195 XClassHint class = {opt_class ? opt_class : termname, termname};
3196 XWMHints wm = {.flags = InputHint, .input = 1};
3197 XSizeHints *sizeh = NULL;
3198
3199 sizeh = XAllocSizeHints();
3200
3201 sizeh->flags = PSize | PResizeInc | PBaseSize;
3202 sizeh->height = xw.h;
3203 sizeh->width = xw.w;
3204 sizeh->height_inc = xw.ch;
3205 sizeh->width_inc = xw.cw;
3206 sizeh->base_height = 2 * borderpx;
3207 sizeh->base_width = 2 * borderpx;
3208 if (xw.isfixed) {
3209 sizeh->flags |= PMaxSize | PMinSize;
3210 sizeh->min_width = sizeh->max_width = xw.w;
3211 sizeh->min_height = sizeh->max_height = xw.h;
3212 }
3213 if (xw.gm & (XValue|YValue)) {
3214 sizeh->flags |= USPosition | PWinGravity;
3215 sizeh->x = xw.l;
3216 sizeh->y = xw.t;
3217 sizeh->win_gravity = xgeommasktogravity(xw.gm);
3218 }
3219
3220 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
3221 &class);
3222 XFree(sizeh);
3223 }
3224
3225 int
3226 xgeommasktogravity(int mask)
3227 {
3228 switch (mask & (XNegative|YNegative)) {
3229 case 0:
3230 return NorthWestGravity;
3231 case XNegative:
3232 return NorthEastGravity;
3233 case YNegative:
3234 return SouthWestGravity;
3235 }
3236 return SouthEastGravity;
3237 }
3238
3239 int
3240 xloadfont(Font *f, FcPattern *pattern)
3241 {
3242 FcPattern *match;
3243 FcResult result;
3244
3245 match = FcFontMatch(NULL, pattern, &result);
3246 if (!match)
3247 return 1;
3248
3249 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3250 FcPatternDestroy(match);
3251 return 1;
3252 }
3253
3254 f->set = NULL;
3255 f->pattern = FcPatternDuplicate(pattern);
3256
3257 f->ascent = f->match->ascent;
3258 f->descent = f->match->descent;
3259 f->lbearing = 0;
3260 f->rbearing = f->match->max_advance_width;
3261
3262 f->height = f->ascent + f->descent;
3263 f->width = f->lbearing + f->rbearing;
3264
3265 return 0;
3266 }
3267
3268 void
3269 xloadfonts(char *fontstr, double fontsize)
3270 {
3271 FcPattern *pattern;
3272 double fontval;
3273 float ceilf(float);
3274
3275 if (fontstr[0] == '-') {
3276 pattern = XftXlfdParse(fontstr, False, False);
3277 } else {
3278 pattern = FcNameParse((FcChar8 *)fontstr);
3279 }
3280
3281 if (!pattern)
3282 die("st: can't open font %s\n", fontstr);
3283
3284 if (fontsize > 1) {
3285 FcPatternDel(pattern, FC_PIXEL_SIZE);
3286 FcPatternDel(pattern, FC_SIZE);
3287 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3288 usedfontsize = fontsize;
3289 } else {
3290 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
3291 FcResultMatch) {
3292 usedfontsize = fontval;
3293 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
3294 FcResultMatch) {
3295 usedfontsize = -1;
3296 } else {
3297 /*
3298 * Default font size is 12, if none given. This is to
3299 * have a known usedfontsize value.
3300 */
3301 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3302 usedfontsize = 12;
3303 }
3304 defaultfontsize = usedfontsize;
3305 }
3306
3307 FcConfigSubstitute(0, pattern, FcMatchPattern);
3308 FcDefaultSubstitute(pattern);
3309
3310 if (xloadfont(&dc.font, pattern))
3311 die("st: can't open font %s\n", fontstr);
3312
3313 if (usedfontsize < 0) {
3314 FcPatternGetDouble(dc.font.match->pattern,
3315 FC_PIXEL_SIZE, 0, &fontval);
3316 usedfontsize = fontval;
3317 if (fontsize == 0)
3318 defaultfontsize = fontval;
3319 }
3320
3321 /* Setting character width and height. */
3322 xw.cw = ceilf(dc.font.width * cwscale);
3323 xw.ch = ceilf(dc.font.height * chscale);
3324
3325 FcPatternDel(pattern, FC_SLANT);
3326 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3327 if (xloadfont(&dc.ifont, pattern))
3328 die("st: can't open font %s\n", fontstr);
3329
3330 FcPatternDel(pattern, FC_WEIGHT);
3331 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3332 if (xloadfont(&dc.ibfont, pattern))
3333 die("st: can't open font %s\n", fontstr);
3334
3335 FcPatternDel(pattern, FC_SLANT);
3336 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3337 if (xloadfont(&dc.bfont, pattern))
3338 die("st: can't open font %s\n", fontstr);
3339
3340 FcPatternDestroy(pattern);
3341 }
3342
3343 void
3344 xunloadfont(Font *f)
3345 {
3346 XftFontClose(xw.dpy, f->match);
3347 FcPatternDestroy(f->pattern);
3348 if (f->set)
3349 FcFontSetDestroy(f->set);
3350 }
3351
3352 void
3353 xunloadfonts(void)
3354 {
3355 /* Free the loaded fonts in the font cache. */
3356 while (frclen > 0)
3357 XftFontClose(xw.dpy, frc[--frclen].font);
3358
3359 xunloadfont(&dc.font);
3360 xunloadfont(&dc.bfont);
3361 xunloadfont(&dc.ifont);
3362 xunloadfont(&dc.ibfont);
3363 }
3364
3365 void
3366 xzoom(const Arg *arg)
3367 {
3368 Arg larg;
3369
3370 larg.f = usedfontsize + arg->f;
3371 xzoomabs(&larg);
3372 }
3373
3374 void
3375 xzoomabs(const Arg *arg)
3376 {
3377 xunloadfonts();
3378 xloadfonts(usedfont, arg->f);
3379 cresize(0, 0);
3380 redraw();
3381 xhints();
3382 }
3383
3384 void
3385 xzoomreset(const Arg *arg)
3386 {
3387 Arg larg;
3388
3389 if (defaultfontsize > 0) {
3390 larg.f = defaultfontsize;
3391 xzoomabs(&larg);
3392 }
3393 }
3394
3395 void
3396 xinit(void)
3397 {
3398 XGCValues gcvalues;
3399 Cursor cursor;
3400 Window parent;
3401 pid_t thispid = getpid();
3402
3403 if (!(xw.dpy = XOpenDisplay(NULL)))
3404 die("Can't open display\n");
3405 xw.scr = XDefaultScreen(xw.dpy);
3406 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3407
3408 /* font */
3409 if (!FcInit())
3410 die("Could not init fontconfig.\n");
3411
3412 usedfont = (opt_font == NULL)? font : opt_font;
3413 xloadfonts(usedfont, 0);
3414
3415 /* colors */
3416 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3417 xloadcols();
3418
3419 /* adjust fixed window geometry */
3420 xw.w = 2 * borderpx + term.col * xw.cw;
3421 xw.h = 2 * borderpx + term.row * xw.ch;
3422 if (xw.gm & XNegative)
3423 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3424 if (xw.gm & YNegative)
3425 xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
3426
3427 /* Events */
3428 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3429 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3430 xw.attrs.bit_gravity = NorthWestGravity;
3431 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3432 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3433 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3434 xw.attrs.colormap = xw.cmap;
3435
3436 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
3437 parent = XRootWindow(xw.dpy, xw.scr);
3438 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3439 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3440 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3441 | CWEventMask | CWColormap, &xw.attrs);
3442
3443 memset(&gcvalues, 0, sizeof(gcvalues));
3444 gcvalues.graphics_exposures = False;
3445 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3446 &gcvalues);
3447 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3448 DefaultDepth(xw.dpy, xw.scr));
3449 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3450 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3451
3452 /* Xft rendering context */
3453 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3454
3455 /* input methods */
3456 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3457 XSetLocaleModifiers("@im=local");
3458 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3459 XSetLocaleModifiers("@im=");
3460 if ((xw.xim = XOpenIM(xw.dpy,
3461 NULL, NULL, NULL)) == NULL) {
3462 die("XOpenIM failed. Could not open input"
3463 " device.\n");
3464 }
3465 }
3466 }
3467 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3468 | XIMStatusNothing, XNClientWindow, xw.win,
3469 XNFocusWindow, xw.win, NULL);
3470 if (xw.xic == NULL)
3471 die("XCreateIC failed. Could not obtain input method.\n");
3472
3473 /* white cursor, black outline */
3474 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
3475 XDefineCursor(xw.dpy, xw.win, cursor);
3476 XRecolorCursor(xw.dpy, cursor,
3477 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
3478 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
3479
3480 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3481 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3482 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3483 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3484
3485 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3486 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3487 PropModeReplace, (uchar *)&thispid, 1);
3488
3489 xresettitle();
3490 XMapWindow(xw.dpy, xw.win);
3491 xhints();
3492 XSync(xw.dpy, False);
3493 }
3494
3495 int
3496 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
3497 {
3498 float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
3499 ushort mode, prevmode = USHRT_MAX;
3500 Font *font = &dc.font;
3501 int frcflags = FRC_NORMAL;
3502 float runewidth = xw.cw;
3503 Rune rune;
3504 FT_UInt glyphidx;
3505 FcResult fcres;
3506 FcPattern *fcpattern, *fontpattern;
3507 FcFontSet *fcsets[] = { NULL };
3508 FcCharSet *fccharset;
3509 int i, f, numspecs = 0;
3510
3511 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
3512 /* Fetch rune and mode for current glyph. */
3513 rune = glyphs[i].u;
3514 mode = glyphs[i].mode;
3515
3516 /* Skip dummy wide-character spacing. */
3517 if (mode == ATTR_WDUMMY)
3518 continue;
3519
3520 /* Determine font for glyph if different from previous glyph. */
3521 if (prevmode != mode) {
3522 prevmode = mode;
3523 font = &dc.font;
3524 frcflags = FRC_NORMAL;
3525 runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
3526 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
3527 font = &dc.ibfont;
3528 frcflags = FRC_ITALICBOLD;
3529 } else if (mode & ATTR_ITALIC) {
3530 font = &dc.ifont;
3531 frcflags = FRC_ITALIC;
3532 } else if (mode & ATTR_BOLD) {
3533 font = &dc.bfont;
3534 frcflags = FRC_BOLD;
3535 }
3536 yp = winy + font->ascent;
3537 }
3538
3539 /* Lookup character index with default font. */
3540 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
3541 if (glyphidx) {
3542 specs[numspecs].font = font->match;
3543 specs[numspecs].glyph = glyphidx;
3544 specs[numspecs].x = (short)xp;
3545 specs[numspecs].y = (short)yp;
3546 xp += runewidth;
3547 numspecs++;
3548 continue;
3549 }
3550
3551 /* Fallback on font cache, search the font cache for match. */
3552 for (f = 0; f < frclen; f++) {
3553 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
3554 /* Everything correct. */
3555 if (glyphidx && frc[f].flags == frcflags)
3556 break;
3557 /* We got a default font for a not found glyph. */
3558 if (!glyphidx && frc[f].flags == frcflags
3559 && frc[f].unicodep == rune) {
3560 break;
3561 }
3562 }
3563
3564 /* Nothing was found. Use fontconfig to find matching font. */
3565 if (f >= frclen) {
3566 if (!font->set)
3567 font->set = FcFontSort(0, font->pattern,
3568 1, 0, &fcres);
3569 fcsets[0] = font->set;
3570
3571 /*
3572 * Nothing was found in the cache. Now use
3573 * some dozen of Fontconfig calls to get the
3574 * font for one single character.
3575 *
3576 * Xft and fontconfig are design failures.
3577 */
3578 fcpattern = FcPatternDuplicate(font->pattern);
3579 fccharset = FcCharSetCreate();
3580
3581 FcCharSetAddChar(fccharset, rune);
3582 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3583 fccharset);
3584 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
3585
3586 FcConfigSubstitute(0, fcpattern,
3587 FcMatchPattern);
3588 FcDefaultSubstitute(fcpattern);
3589
3590 fontpattern = FcFontSetMatch(0, fcsets, 1,
3591 fcpattern, &fcres);
3592
3593 /*
3594 * Overwrite or create the new cache entry.
3595 */
3596 if (frclen >= LEN(frc)) {
3597 frclen = LEN(frc) - 1;
3598 XftFontClose(xw.dpy, frc[frclen].font);
3599 frc[frclen].unicodep = 0;
3600 }
3601
3602 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3603 fontpattern);
3604 frc[frclen].flags = frcflags;
3605 frc[frclen].unicodep = rune;
3606
3607 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
3608
3609 f = frclen;
3610 frclen++;
3611
3612 FcPatternDestroy(fcpattern);
3613 FcCharSetDestroy(fccharset);
3614 }
3615
3616 specs[numspecs].font = frc[f].font;
3617 specs[numspecs].glyph = glyphidx;
3618 specs[numspecs].x = (short)xp;
3619 specs[numspecs].y = (short)(winy + frc[f].font->ascent);
3620 xp += runewidth;
3621 numspecs++;
3622 }
3623
3624 return numspecs;
3625 }
3626
3627 void
3628 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
3629 {
3630 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
3631 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3632 width = charlen * xw.cw;
3633 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3634 XRenderColor colfg, colbg;
3635 XRectangle r;
3636
3637 /* Determine foreground and background colors based on mode. */
3638 if (base.fg == defaultfg) {
3639 if (base.mode & ATTR_ITALIC)
3640 base.fg = defaultitalic;
3641 else if ((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
3642 base.fg = defaultitalic;
3643 else if (base.mode & ATTR_UNDERLINE)
3644 base.fg = defaultunderline;
3645 }
3646
3647 if (IS_TRUECOL(base.fg)) {
3648 colfg.alpha = 0xffff;
3649 colfg.red = TRUERED(base.fg);
3650 colfg.green = TRUEGREEN(base.fg);
3651 colfg.blue = TRUEBLUE(base.fg);
3652 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3653 fg = &truefg;
3654 } else {
3655 fg = &dc.col[base.fg];
3656 }
3657
3658 if (IS_TRUECOL(base.bg)) {
3659 colbg.alpha = 0xffff;
3660 colbg.green = TRUEGREEN(base.bg);
3661 colbg.red = TRUERED(base.bg);
3662 colbg.blue = TRUEBLUE(base.bg);
3663 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3664 bg = &truebg;
3665 } else {
3666 bg = &dc.col[base.bg];
3667 }
3668
3669 /* Change basic system colors [0-7] to bright system colors [8-15] */
3670 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
3671 fg = &dc.col[base.fg + 8];
3672
3673 if (IS_SET(MODE_REVERSE)) {
3674 if (fg == &dc.col[defaultfg]) {
3675 fg = &dc.col[defaultbg];
3676 } else {
3677 colfg.red = ~fg->color.red;
3678 colfg.green = ~fg->color.green;
3679 colfg.blue = ~fg->color.blue;
3680 colfg.alpha = fg->color.alpha;
3681 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3682 &revfg);
3683 fg = &revfg;
3684 }
3685
3686 if (bg == &dc.col[defaultbg]) {
3687 bg = &dc.col[defaultfg];
3688 } else {
3689 colbg.red = ~bg->color.red;
3690 colbg.green = ~bg->color.green;
3691 colbg.blue = ~bg->color.blue;
3692 colbg.alpha = bg->color.alpha;
3693 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3694 &revbg);
3695 bg = &revbg;
3696 }
3697 }
3698
3699 if (base.mode & ATTR_REVERSE) {
3700 temp = fg;
3701 fg = bg;
3702 bg = temp;
3703 }
3704
3705 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
3706 colfg.red = fg->color.red / 2;
3707 colfg.green = fg->color.green / 2;
3708 colfg.blue = fg->color.blue / 2;
3709 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3710 fg = &revfg;
3711 }
3712
3713 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3714 fg = bg;
3715
3716 if (base.mode & ATTR_INVISIBLE)
3717 fg = bg;
3718
3719 /* Intelligent cleaning up of the borders. */
3720 if (x == 0) {
3721 xclear(0, (y == 0)? 0 : winy, borderpx,
3722 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3723 }
3724 if (x + charlen >= term.col) {
3725 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3726 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3727 }
3728 if (y == 0)
3729 xclear(winx, 0, winx + width, borderpx);
3730 if (y == term.row-1)
3731 xclear(winx, winy + xw.ch, winx + width, xw.h);
3732
3733 /* Clean up the region we want to draw to. */
3734 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3735
3736 /* Set the clip region because Xft is sometimes dirty. */
3737 r.x = 0;
3738 r.y = 0;
3739 r.height = xw.ch;
3740 r.width = width;
3741 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3742
3743 /* Render the glyphs. */
3744 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
3745
3746 /* Render underline and strikethrough. */
3747 if (base.mode & ATTR_UNDERLINE) {
3748 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
3749 width, 1);
3750 }
3751
3752 if (base.mode & ATTR_STRUCK) {
3753 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
3754 width, 1);
3755 }
3756
3757 /* Reset clip to none. */
3758 XftDrawSetClip(xw.draw, 0);
3759 }
3760
3761 void
3762 xdrawglyph(Glyph g, int x, int y)
3763 {
3764 int numspecs;
3765 XftGlyphFontSpec spec;
3766 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
3767 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
3768 }
3769
3770 void
3771 xdrawcursor(void)
3772 {
3773 static int oldx = 0, oldy = 0;
3774 int curx;
3775 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs};
3776
3777 LIMIT(oldx, 0, term.col-1);
3778 LIMIT(oldy, 0, term.row-1);
3779
3780 curx = term.c.x;
3781
3782 /* adjust position if in dummy */
3783 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
3784 oldx--;
3785 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3786 curx--;
3787
3788 g.u = term.line[term.c.y][term.c.x].u;
3789
3790 /* remove the old cursor */
3791 xdrawglyph(term.line[oldy][oldx], oldx, oldy);
3792
3793 if (IS_SET(MODE_HIDE))
3794 return;
3795
3796 /* draw the new one */
3797 if (xw.state & WIN_FOCUSED) {
3798 switch (xw.cursor) {
3799 case 0: /* Blinking Block */
3800 case 1: /* Blinking Block (Default) */
3801 case 2: /* Steady Block */
3802 if (IS_SET(MODE_REVERSE)) {
3803 g.mode |= ATTR_REVERSE;
3804 g.fg = defaultcs;
3805 g.bg = defaultfg;
3806 }
3807
3808 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
3809 xdrawglyph(g, term.c.x, term.c.y);
3810 break;
3811 case 3: /* Blinking Underline */
3812 case 4: /* Steady Underline */
3813 XftDrawRect(xw.draw, &dc.col[defaultcs],
3814 borderpx + curx * xw.cw,
3815 borderpx + (term.c.y + 1) * xw.ch - cursorthickness,
3816 xw.cw, cursorthickness);
3817 break;
3818 case 5: /* Blinking bar */
3819 case 6: /* Steady bar */
3820 XftDrawRect(xw.draw, &dc.col[defaultcs],
3821 borderpx + curx * xw.cw,
3822 borderpx + term.c.y * xw.ch,
3823 cursorthickness, xw.ch);
3824 break;
3825 }
3826 } else {
3827 XftDrawRect(xw.draw, &dc.col[defaultcs],
3828 borderpx + curx * xw.cw,
3829 borderpx + term.c.y * xw.ch,
3830 xw.cw - 1, 1);
3831 XftDrawRect(xw.draw, &dc.col[defaultcs],
3832 borderpx + curx * xw.cw,
3833 borderpx + term.c.y * xw.ch,
3834 1, xw.ch - 1);
3835 XftDrawRect(xw.draw, &dc.col[defaultcs],
3836 borderpx + (curx + 1) * xw.cw - 1,
3837 borderpx + term.c.y * xw.ch,
3838 1, xw.ch - 1);
3839 XftDrawRect(xw.draw, &dc.col[defaultcs],
3840 borderpx + curx * xw.cw,
3841 borderpx + (term.c.y + 1) * xw.ch - 1,
3842 xw.cw, 1);
3843 }
3844 oldx = curx, oldy = term.c.y;
3845 }
3846
3847
3848 void
3849 xsettitle(char *p)
3850 {
3851 XTextProperty prop;
3852
3853 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3854 &prop);
3855 XSetWMName(xw.dpy, xw.win, &prop);
3856 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3857 XFree(prop.value);
3858 }
3859
3860 void
3861 xresettitle(void)
3862 {
3863 xsettitle(opt_title ? opt_title : "st");
3864 }
3865
3866 void
3867 redraw(void)
3868 {
3869 tfulldirt();
3870 draw();
3871 }
3872
3873 void
3874 draw(void)
3875 {
3876 drawregion(0, 0, term.col, term.row);
3877 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3878 xw.h, 0, 0);
3879 XSetForeground(xw.dpy, dc.gc,
3880 dc.col[IS_SET(MODE_REVERSE)?
3881 defaultfg : defaultbg].pixel);
3882 }
3883
3884 void
3885 drawregion(int x1, int y1, int x2, int y2)
3886 {
3887 int i, x, y, ox, numspecs;
3888 Glyph base, new;
3889 XftGlyphFontSpec* specs;
3890 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3891
3892 if (!(xw.state & WIN_VISIBLE))
3893 return;
3894
3895 for (y = y1; y < y2; y++) {
3896 if (!term.dirty[y])
3897 continue;
3898
3899 xtermclear(0, y, term.col, y);
3900 term.dirty[y] = 0;
3901
3902 specs = term.specbuf;
3903 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
3904
3905 i = ox = 0;
3906 for (x = x1; x < x2 && i < numspecs; x++) {
3907 new = term.line[y][x];
3908 if (new.mode == ATTR_WDUMMY)
3909 continue;
3910 if (ena_sel && selected(x, y))
3911 new.mode ^= ATTR_REVERSE;
3912 if (i > 0 && ATTRCMP(base, new)) {
3913 xdrawglyphfontspecs(specs, base, i, ox, y);
3914 specs += i;
3915 numspecs -= i;
3916 i = 0;
3917 }
3918 if (i == 0) {
3919 ox = x;
3920 base = new;
3921 }
3922 i++;
3923 }
3924 if (i > 0)
3925 xdrawglyphfontspecs(specs, base, i, ox, y);
3926 }
3927 xdrawcursor();
3928 }
3929
3930 void
3931 expose(XEvent *ev)
3932 {
3933 redraw();
3934 }
3935
3936 void
3937 visibility(XEvent *ev)
3938 {
3939 XVisibilityEvent *e = &ev->xvisibility;
3940
3941 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
3942 }
3943
3944 void
3945 unmap(XEvent *ev)
3946 {
3947 xw.state &= ~WIN_VISIBLE;
3948 }
3949
3950 void
3951 xsetpointermotion(int set)
3952 {
3953 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
3954 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
3955 }
3956
3957 void
3958 xseturgency(int add)
3959 {
3960 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3961
3962 MODBIT(h->flags, add, XUrgencyHint);
3963 XSetWMHints(xw.dpy, xw.win, h);
3964 XFree(h);
3965 }
3966
3967 void
3968 focus(XEvent *ev)
3969 {
3970 XFocusChangeEvent *e = &ev->xfocus;
3971
3972 if (e->mode == NotifyGrab)
3973 return;
3974
3975 if (ev->type == FocusIn) {
3976 XSetICFocus(xw.xic);
3977 xw.state |= WIN_FOCUSED;
3978 xseturgency(0);
3979 if (IS_SET(MODE_FOCUS))
3980 ttywrite("\033[I", 3);
3981 } else {
3982 XUnsetICFocus(xw.xic);
3983 xw.state &= ~WIN_FOCUSED;
3984 if (IS_SET(MODE_FOCUS))
3985 ttywrite("\033[O", 3);
3986 }
3987 }
3988
3989 int
3990 match(uint mask, uint state)
3991 {
3992 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
3993 }
3994
3995 void
3996 numlock(const Arg *dummy)
3997 {
3998 term.numlock ^= 1;
3999 }
4000
4001 char*
4002 kmap(KeySym k, uint state)
4003 {
4004 Key *kp;
4005 int i;
4006
4007 /* Check for mapped keys out of X11 function keys. */
4008 for (i = 0; i < LEN(mappedkeys); i++) {
4009 if (mappedkeys[i] == k)
4010 break;
4011 }
4012 if (i == LEN(mappedkeys)) {
4013 if ((k & 0xFFFF) < 0xFD00)
4014 return NULL;
4015 }
4016
4017 for (kp = key; kp < key + LEN(key); kp++) {
4018 if (kp->k != k)
4019 continue;
4020
4021 if (!match(kp->mask, state))
4022 continue;
4023
4024 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
4025 continue;
4026 if (term.numlock && kp->appkey == 2)
4027 continue;
4028
4029 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
4030 continue;
4031
4032 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
4033 continue;
4034
4035 return kp->s;
4036 }
4037
4038 return NULL;
4039 }
4040
4041 void
4042 kpress(XEvent *ev)
4043 {
4044 XKeyEvent *e = &ev->xkey;
4045 KeySym ksym;
4046 char buf[32], *customkey;
4047 int len;
4048 Rune c;
4049 Status status;
4050 Shortcut *bp;
4051
4052 if (IS_SET(MODE_KBDLOCK))
4053 return;
4054
4055 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
4056 /* 1. shortcuts */
4057 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
4058 if (ksym == bp->keysym && match(bp->mod, e->state)) {
4059 bp->func(&(bp->arg));
4060 return;
4061 }
4062 }
4063
4064 /* 2. custom keys from config.h */
4065 if ((customkey = kmap(ksym, e->state))) {
4066 ttysend(customkey, strlen(customkey));
4067 return;
4068 }
4069
4070 /* 3. composed string from input method */
4071 if (len == 0)
4072 return;
4073 if (len == 1 && e->state & Mod1Mask) {
4074 if (IS_SET(MODE_8BIT)) {
4075 if (*buf < 0177) {
4076 c = *buf | 0x80;
4077 len = utf8encode(c, buf);
4078 }
4079 } else {
4080 buf[1] = buf[0];
4081 buf[0] = '\033';
4082 len = 2;
4083 }
4084 }
4085 ttysend(buf, len);
4086 }
4087
4088
4089 void
4090 cmessage(XEvent *e)
4091 {
4092 /*
4093 * See xembed specs
4094 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
4095 */
4096 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
4097 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
4098 xw.state |= WIN_FOCUSED;
4099 xseturgency(0);
4100 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
4101 xw.state &= ~WIN_FOCUSED;
4102 }
4103 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
4104 /* Send SIGHUP to shell */
4105 kill(pid, SIGHUP);
4106 exit(0);
4107 }
4108 }
4109
4110 void
4111 cresize(int width, int height)
4112 {
4113 int col, row;
4114
4115 if (width != 0)
4116 xw.w = width;
4117 if (height != 0)
4118 xw.h = height;
4119
4120 col = (xw.w - 2 * borderpx) / xw.cw;
4121 row = (xw.h - 2 * borderpx) / xw.ch;
4122
4123 tresize(col, row);
4124 xresize(col, row);
4125 ttyresize();
4126 }
4127
4128 void
4129 resize(XEvent *e)
4130 {
4131 if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
4132 return;
4133
4134 cresize(e->xconfigure.width, e->xconfigure.height);
4135 }
4136
4137 void
4138 run(void)
4139 {
4140 XEvent ev;
4141 int w = xw.w, h = xw.h;
4142 fd_set rfd;
4143 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
4144 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
4145 long deltatime;
4146
4147 /* Waiting for window mapping */
4148 do {
4149 XNextEvent(xw.dpy, &ev);
4150 /*
4151 * XFilterEvent is required to be called after you using XOpenIM,
4152 * this is not unnecessary.It does not only filter the key event,
4153 * but some clientmessage for input method as well.
4154 */
4155 if (XFilterEvent(&ev, None))
4156 continue;
4157 if (ev.type == ConfigureNotify) {
4158 w = ev.xconfigure.width;
4159 h = ev.xconfigure.height;
4160 }
4161 } while (ev.type != MapNotify);
4162
4163 ttynew();
4164 cresize(w, h);
4165
4166 clock_gettime(CLOCK_MONOTONIC, &last);
4167 lastblink = last;
4168
4169 for (xev = actionfps;;) {
4170 FD_ZERO(&rfd);
4171 FD_SET(cmdfd, &rfd);
4172 FD_SET(xfd, &rfd);
4173
4174 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
4175 if (errno == EINTR)
4176 continue;
4177 die("select failed: %s\n", strerror(errno));
4178 }
4179 if (FD_ISSET(cmdfd, &rfd)) {
4180 ttyread();
4181 if (blinktimeout) {
4182 blinkset = tattrset(ATTR_BLINK);
4183 if (!blinkset)
4184 MODBIT(term.mode, 0, MODE_BLINK);
4185 }
4186 }
4187
4188 if (FD_ISSET(xfd, &rfd))
4189 xev = actionfps;
4190
4191 clock_gettime(CLOCK_MONOTONIC, &now);
4192 drawtimeout.tv_sec = 0;
4193 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
4194 tv = &drawtimeout;
4195
4196 dodraw = 0;
4197 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
4198 tsetdirtattr(ATTR_BLINK);
4199 term.mode ^= MODE_BLINK;
4200 lastblink = now;
4201 dodraw = 1;
4202 }
4203 deltatime = TIMEDIFF(now, last);
4204 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
4205 dodraw = 1;
4206 last = now;
4207 }
4208
4209 if (dodraw) {
4210 while (XPending(xw.dpy)) {
4211 XNextEvent(xw.dpy, &ev);
4212 if (XFilterEvent(&ev, None))
4213 continue;
4214 if (handler[ev.type])
4215 (handler[ev.type])(&ev);
4216 }
4217
4218 draw();
4219 XFlush(xw.dpy);
4220
4221 if (xev && !FD_ISSET(xfd, &rfd))
4222 xev--;
4223 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
4224 if (blinkset) {
4225 if (TIMEDIFF(now, lastblink) \
4226 > blinktimeout) {
4227 drawtimeout.tv_nsec = 1000;
4228 } else {
4229 drawtimeout.tv_nsec = (1E6 * \
4230 (blinktimeout - \
4231 TIMEDIFF(now,
4232 lastblink)));
4233 }
4234 drawtimeout.tv_sec = \
4235 drawtimeout.tv_nsec / 1E9;
4236 drawtimeout.tv_nsec %= (long)1E9;
4237 } else {
4238 tv = NULL;
4239 }
4240 }
4241 }
4242 }
4243 }
4244
4245 void
4246 usage(void)
4247 {
4248 die("%s " VERSION " (c) 2010-2015 st engineers\n"
4249 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
4250 " [-i] [-t title] [-w windowid] [-e command ...] [command ...]\n"
4251 " st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
4252 " [-i] [-t title] [-w windowid] [-l line] [stty_args ...]\n",
4253 argv0);
4254 }
4255
4256 int
4257 main(int argc, char *argv[])
4258 {
4259 uint cols = 80, rows = 24;
4260
4261 xw.l = xw.t = 0;
4262 xw.isfixed = False;
4263 xw.cursor = 0;
4264
4265 ARGBEGIN {
4266 case 'a':
4267 allowaltscreen = 0;
4268 break;
4269 case 'c':
4270 opt_class = EARGF(usage());
4271 break;
4272 case 'e':
4273 if (argc > 0)
4274 --argc, ++argv;
4275 goto run;
4276 case 'f':
4277 opt_font = EARGF(usage());
4278 break;
4279 case 'g':
4280 xw.gm = XParseGeometry(EARGF(usage()),
4281 &xw.l, &xw.t, &cols, &rows);
4282 break;
4283 case 'i':
4284 xw.isfixed = 1;
4285 break;
4286 case 'o':
4287 opt_io = EARGF(usage());
4288 break;
4289 case 'l':
4290 opt_line = EARGF(usage());
4291 break;
4292 case 't':
4293 opt_title = EARGF(usage());
4294 break;
4295 case 'w':
4296 opt_embed = EARGF(usage());
4297 break;
4298 case 'v':
4299 default:
4300 usage();
4301 } ARGEND;
4302
4303 run:
4304 if (argc > 0) {
4305 /* eat all remaining arguments */
4306 opt_cmd = argv;
4307 if (!opt_title && !opt_line)
4308 opt_title = basename(xstrdup(argv[0]));
4309 }
4310 setlocale(LC_CTYPE, "");
4311 XSetLocaleModifiers("");
4312 tnew(MAX(cols, 1), MAX(rows, 1));
4313 xinit();
4314 selinit();
4315 run();
4316
4317 return 0;
4318 }
4319