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