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Add DSR cursor position sequence
[st.git] / st.c
1 /* See LICENSE for licence 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 <stdbool.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include <signal.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 <fontconfig/fontconfig.h>
30 #include <wchar.h>
31
32 #include "arg.h"
33
34 char *argv0;
35
36 #define Glyph Glyph_
37 #define Font Font_
38 #define Draw XftDraw *
39 #define Colour XftColor
40 #define Colourmap Colormap
41 #define Rectangle XRectangle
42
43 #if defined(__linux)
44 #include <pty.h>
45 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
46 #include <util.h>
47 #elif defined(__FreeBSD__) || defined(__DragonFly__)
48 #include <libutil.h>
49 #endif
50
51
52 /* XEMBED messages */
53 #define XEMBED_FOCUS_IN 4
54 #define XEMBED_FOCUS_OUT 5
55
56 /* Arbitrary sizes */
57 #define UTF_SIZ 4
58 #define ESC_BUF_SIZ (128*UTF_SIZ)
59 #define ESC_ARG_SIZ 16
60 #define STR_BUF_SIZ ESC_BUF_SIZ
61 #define STR_ARG_SIZ ESC_ARG_SIZ
62 #define DRAW_BUF_SIZ 20*1024
63 #define XK_ANY_MOD UINT_MAX
64 #define XK_NO_MOD 0
65 #define XK_SWITCH_MOD (1<<13)
66
67 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
68
69 /* macros */
70 #define SERRNO strerror(errno)
71 #define MIN(a, b) ((a) < (b) ? (a) : (b))
72 #define MAX(a, b) ((a) < (b) ? (b) : (a))
73 #define LEN(a) (sizeof(a) / sizeof(a[0]))
74 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
75 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
76 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
77 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
78 #define IS_SET(flag) ((term.mode & (flag)) != 0)
79 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
80 #define CEIL(x) (((x) != (int) (x)) ? (x) + 1 : (x))
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 #define VT102ID "\033[?6c"
90
91 enum glyph_attribute {
92 ATTR_NULL = 0,
93 ATTR_REVERSE = 1,
94 ATTR_UNDERLINE = 2,
95 ATTR_BOLD = 4,
96 ATTR_GFX = 8,
97 ATTR_ITALIC = 16,
98 ATTR_BLINK = 32,
99 ATTR_WRAP = 64,
100 ATTR_WIDE = 128,
101 ATTR_WDUMMY = 256,
102 };
103
104 enum cursor_movement {
105 CURSOR_SAVE,
106 CURSOR_LOAD
107 };
108
109 enum cursor_state {
110 CURSOR_DEFAULT = 0,
111 CURSOR_WRAPNEXT = 1,
112 CURSOR_ORIGIN = 2
113 };
114
115 enum term_mode {
116 MODE_WRAP = 1,
117 MODE_INSERT = 2,
118 MODE_APPKEYPAD = 4,
119 MODE_ALTSCREEN = 8,
120 MODE_CRLF = 16,
121 MODE_MOUSEBTN = 32,
122 MODE_MOUSEMOTION = 64,
123 MODE_REVERSE = 128,
124 MODE_KBDLOCK = 256,
125 MODE_HIDE = 512,
126 MODE_ECHO = 1024,
127 MODE_APPCURSOR = 2048,
128 MODE_MOUSESGR = 4096,
129 MODE_8BIT = 8192,
130 MODE_BLINK = 16384,
131 MODE_FBLINK = 32768,
132 MODE_FOCUS = 65536,
133 MODE_MOUSEX10 = 131072,
134 MODE_MOUSEMANY = 262144,
135 MODE_BRCKTPASTE = 524288,
136 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
137 |MODE_MOUSEMANY,
138 };
139
140 enum escape_state {
141 ESC_START = 1,
142 ESC_CSI = 2,
143 ESC_STR = 4, /* DSC, OSC, PM, APC */
144 ESC_ALTCHARSET = 8,
145 ESC_STR_END = 16, /* a final string was encountered */
146 ESC_TEST = 32, /* Enter in test mode */
147 };
148
149 enum window_state {
150 WIN_VISIBLE = 1,
151 WIN_REDRAW = 2,
152 WIN_FOCUSED = 4
153 };
154
155 enum selection_type {
156 SEL_REGULAR = 1,
157 SEL_RECTANGULAR = 2
158 };
159
160 enum selection_snap {
161 SNAP_WORD = 1,
162 SNAP_LINE = 2
163 };
164
165 typedef unsigned char uchar;
166 typedef unsigned int uint;
167 typedef unsigned long ulong;
168 typedef unsigned short ushort;
169
170 typedef struct {
171 char c[UTF_SIZ]; /* character code */
172 ushort mode; /* attribute flags */
173 ulong fg; /* foreground */
174 ulong bg; /* background */
175 } Glyph;
176
177 typedef Glyph *Line;
178
179 typedef struct {
180 Glyph attr; /* current char attributes */
181 int x;
182 int y;
183 char state;
184 } TCursor;
185
186 /* CSI Escape sequence structs */
187 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
188 typedef struct {
189 char buf[ESC_BUF_SIZ]; /* raw string */
190 int len; /* raw string length */
191 char priv;
192 int arg[ESC_ARG_SIZ];
193 int narg; /* nb of args */
194 char mode;
195 } CSIEscape;
196
197 /* STR Escape sequence structs */
198 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
199 typedef struct {
200 char type; /* ESC type ... */
201 char buf[STR_BUF_SIZ]; /* raw string */
202 int len; /* raw string length */
203 char *args[STR_ARG_SIZ];
204 int narg; /* nb of args */
205 } STREscape;
206
207 /* Internal representation of the screen */
208 typedef struct {
209 int row; /* nb row */
210 int col; /* nb col */
211 Line *line; /* screen */
212 Line *alt; /* alternate screen */
213 bool *dirty; /* dirtyness of lines */
214 TCursor c; /* cursor */
215 int top; /* top scroll limit */
216 int bot; /* bottom scroll limit */
217 int mode; /* terminal mode flags */
218 int esc; /* escape state flags */
219 bool numlock; /* lock numbers in keyboard */
220 bool *tabs;
221 } Term;
222
223 /* Purely graphic info */
224 typedef struct {
225 Display *dpy;
226 Colourmap cmap;
227 Window win;
228 Drawable buf;
229 Atom xembed, wmdeletewin;
230 XIM xim;
231 XIC xic;
232 Draw draw;
233 Visual *vis;
234 XSetWindowAttributes attrs;
235 int scr;
236 bool isfixed; /* is fixed geometry? */
237 int fx, fy, fw, fh; /* fixed geometry */
238 int tw, th; /* tty width and height */
239 int w, h; /* window width and height */
240 int ch; /* char height */
241 int cw; /* char width */
242 char state; /* focus, redraw, visible */
243 } XWindow;
244
245 typedef struct {
246 int b;
247 uint mask;
248 char s[ESC_BUF_SIZ];
249 } Mousekey;
250
251 typedef struct {
252 KeySym k;
253 uint mask;
254 char s[ESC_BUF_SIZ];
255 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
256 signed char appkey; /* application keypad */
257 signed char appcursor; /* application cursor */
258 signed char crlf; /* crlf mode */
259 } Key;
260
261 typedef struct {
262 int mode;
263 int type;
264 int snap;
265 /*
266 * Selection variables:
267 * nb – normalized coordinates of the beginning of the selection
268 * ne – normalized coordinates of the end of the selection
269 * ob – original coordinates of the beginning of the selection
270 * oe – original coordinates of the end of the selection
271 */
272 struct {
273 int x, y;
274 } nb, ne, ob, oe;
275
276 char *clip;
277 Atom xtarget;
278 bool alt;
279 struct timeval tclick1;
280 struct timeval tclick2;
281 } Selection;
282
283 typedef union {
284 int i;
285 unsigned int ui;
286 float f;
287 const void *v;
288 } Arg;
289
290 typedef struct {
291 unsigned int mod;
292 KeySym keysym;
293 void (*func)(const Arg *);
294 const Arg arg;
295 } Shortcut;
296
297 /* function definitions used in config.h */
298 static void clippaste(const Arg *);
299 static void numlock(const Arg *);
300 static void selpaste(const Arg *);
301 static void xzoom(const Arg *);
302
303 /* Config.h for applying patches and the configuration. */
304 #include "config.h"
305
306 /* Font structure */
307 typedef struct {
308 int height;
309 int width;
310 int ascent;
311 int descent;
312 short lbearing;
313 short rbearing;
314 XftFont *match;
315 FcFontSet *set;
316 FcPattern *pattern;
317 } Font;
318
319 /* Drawing Context */
320 typedef struct {
321 Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
322 Font font, bfont, ifont, ibfont;
323 GC gc;
324 } DC;
325
326 static void die(const char *, ...);
327 static void draw(void);
328 static void redraw(int);
329 static void drawregion(int, int, int, int);
330 static void execsh(void);
331 static void sigchld(int);
332 static void run(void);
333
334 static void csidump(void);
335 static void csihandle(void);
336 static void csiparse(void);
337 static void csireset(void);
338 static void strdump(void);
339 static void strhandle(void);
340 static void strparse(void);
341 static void strreset(void);
342
343 static int tattrset(int);
344 static void tclearregion(int, int, int, int);
345 static void tcursor(int);
346 static void tdeletechar(int);
347 static void tdeleteline(int);
348 static void tinsertblank(int);
349 static void tinsertblankline(int);
350 static void tmoveto(int, int);
351 static void tmoveato(int x, int y);
352 static void tnew(int, int);
353 static void tnewline(int);
354 static void tputtab(bool);
355 static void tputc(char *, int);
356 static void treset(void);
357 static int tresize(int, int);
358 static void tscrollup(int, int);
359 static void tscrolldown(int, int);
360 static void tsetattr(int*, int);
361 static void tsetchar(char *, Glyph *, int, int);
362 static void tsetscroll(int, int);
363 static void tswapscreen(void);
364 static void tsetdirt(int, int);
365 static void tsetdirtattr(int);
366 static void tsetmode(bool, bool, int *, int);
367 static void tfulldirt(void);
368 static void techo(char *, int);
369 static long tdefcolor(int *, int *, int);
370 static inline bool match(uint, uint);
371 static void ttynew(void);
372 static void ttyread(void);
373 static void ttyresize(void);
374 static void ttywrite(const char *, size_t);
375
376 static void xdraws(char *, Glyph, int, int, int, int);
377 static void xhints(void);
378 static void xclear(int, int, int, int);
379 static void xdrawcursor(void);
380 static void xinit(void);
381 static void xloadcols(void);
382 static int xsetcolorname(int, const char *);
383 static int xloadfont(Font *, FcPattern *);
384 static void xloadfonts(char *, int);
385 static int xloadfontset(Font *);
386 static void xsettitle(char *);
387 static void xresettitle(void);
388 static void xsetpointermotion(int);
389 static void xseturgency(int);
390 static void xsetsel(char*);
391 static void xtermclear(int, int, int, int);
392 static void xunloadfont(Font *f);
393 static void xunloadfonts(void);
394 static void xresize(int, int);
395
396 static void expose(XEvent *);
397 static void visibility(XEvent *);
398 static void unmap(XEvent *);
399 static char *kmap(KeySym, uint);
400 static void kpress(XEvent *);
401 static void cmessage(XEvent *);
402 static void cresize(int, int);
403 static void resize(XEvent *);
404 static void focus(XEvent *);
405 static void brelease(XEvent *);
406 static void bpress(XEvent *);
407 static void bmotion(XEvent *);
408 static void selnotify(XEvent *);
409 static void selclear(XEvent *);
410 static void selrequest(XEvent *);
411
412 static void selinit(void);
413 static void selsort(void);
414 static inline bool selected(int, int);
415 static void selcopy(void);
416 static void selscroll(int, int);
417 static void selsnap(int, int *, int *, int);
418
419 static int utf8decode(char *, long *);
420 static int utf8encode(long *, char *);
421 static int utf8size(char *);
422 static int isfullutf8(char *, int);
423
424 static ssize_t xwrite(int, char *, size_t);
425 static void *xmalloc(size_t);
426 static void *xrealloc(void *, size_t);
427
428 static void (*handler[LASTEvent])(XEvent *) = {
429 [KeyPress] = kpress,
430 [ClientMessage] = cmessage,
431 [ConfigureNotify] = resize,
432 [VisibilityNotify] = visibility,
433 [UnmapNotify] = unmap,
434 [Expose] = expose,
435 [FocusIn] = focus,
436 [FocusOut] = focus,
437 [MotionNotify] = bmotion,
438 [ButtonPress] = bpress,
439 [ButtonRelease] = brelease,
440 [SelectionClear] = selclear,
441 [SelectionNotify] = selnotify,
442 [SelectionRequest] = selrequest,
443 };
444
445 /* Globals */
446 static DC dc;
447 static XWindow xw;
448 static Term term;
449 static CSIEscape csiescseq;
450 static STREscape strescseq;
451 static int cmdfd;
452 static pid_t pid;
453 static Selection sel;
454 static int iofd = -1;
455 static char **opt_cmd = NULL;
456 static char *opt_io = NULL;
457 static char *opt_title = NULL;
458 static char *opt_embed = NULL;
459 static char *opt_class = NULL;
460 static char *opt_font = NULL;
461 static int oldbutton = 3; /* button event on startup: 3 = release */
462
463 static char *usedfont = NULL;
464 static int usedfontsize = 0;
465
466 /* Font Ring Cache */
467 enum {
468 FRC_NORMAL,
469 FRC_ITALIC,
470 FRC_BOLD,
471 FRC_ITALICBOLD
472 };
473
474 typedef struct {
475 XftFont *font;
476 int flags;
477 } Fontcache;
478
479 /* Fontcache is an array now. A new font will be appended to the array. */
480 static Fontcache frc[16];
481 static int frclen = 0;
482
483 ssize_t
484 xwrite(int fd, char *s, size_t len) {
485 size_t aux = len;
486
487 while(len > 0) {
488 ssize_t r = write(fd, s, len);
489 if(r < 0)
490 return r;
491 len -= r;
492 s += r;
493 }
494 return aux;
495 }
496
497 void *
498 xmalloc(size_t len) {
499 void *p = malloc(len);
500
501 if(!p)
502 die("Out of memory\n");
503
504 return p;
505 }
506
507 void *
508 xrealloc(void *p, size_t len) {
509 if((p = realloc(p, len)) == NULL)
510 die("Out of memory\n");
511
512 return p;
513 }
514
515 int
516 utf8decode(char *s, long *u) {
517 uchar c;
518 int i, n, rtn;
519
520 rtn = 1;
521 c = *s;
522 if(~c & 0x80) { /* 0xxxxxxx */
523 *u = c;
524 return rtn;
525 } else if((c & 0xE0) == 0xC0) { /* 110xxxxx */
526 *u = c & 0x1F;
527 n = 1;
528 } else if((c & 0xF0) == 0xE0) { /* 1110xxxx */
529 *u = c & 0x0F;
530 n = 2;
531 } else if((c & 0xF8) == 0xF0) { /* 11110xxx */
532 *u = c & 0x07;
533 n = 3;
534 } else {
535 goto invalid;
536 }
537
538 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
539 c = *s;
540 if((c & 0xC0) != 0x80) /* 10xxxxxx */
541 goto invalid;
542 *u <<= 6;
543 *u |= c & 0x3F;
544 }
545
546 if((n == 1 && *u < 0x80) ||
547 (n == 2 && *u < 0x800) ||
548 (n == 3 && *u < 0x10000) ||
549 (*u >= 0xD800 && *u <= 0xDFFF)) {
550 goto invalid;
551 }
552
553 return rtn;
554 invalid:
555 *u = 0xFFFD;
556
557 return rtn;
558 }
559
560 int
561 utf8encode(long *u, char *s) {
562 uchar *sp;
563 ulong uc;
564 int i, n;
565
566 sp = (uchar *)s;
567 uc = *u;
568 if(uc < 0x80) {
569 *sp = uc; /* 0xxxxxxx */
570 return 1;
571 } else if(*u < 0x800) {
572 *sp = (uc >> 6) | 0xC0; /* 110xxxxx */
573 n = 1;
574 } else if(uc < 0x10000) {
575 *sp = (uc >> 12) | 0xE0; /* 1110xxxx */
576 n = 2;
577 } else if(uc <= 0x10FFFF) {
578 *sp = (uc >> 18) | 0xF0; /* 11110xxx */
579 n = 3;
580 } else {
581 goto invalid;
582 }
583
584 for(i=n,++sp; i>0; --i,++sp)
585 *sp = ((uc >> 6*(i-1)) & 0x3F) | 0x80; /* 10xxxxxx */
586
587 return n+1;
588 invalid:
589 /* U+FFFD */
590 *s++ = '\xEF';
591 *s++ = '\xBF';
592 *s = '\xBD';
593
594 return 3;
595 }
596
597 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
598 UTF-8 otherwise return 0 */
599 int
600 isfullutf8(char *s, int b) {
601 uchar *c1, *c2, *c3;
602
603 c1 = (uchar *)s;
604 c2 = (uchar *)++s;
605 c3 = (uchar *)++s;
606 if(b < 1) {
607 return 0;
608 } else if((*c1 & 0xE0) == 0xC0 && b == 1) {
609 return 0;
610 } else if((*c1 & 0xF0) == 0xE0 &&
611 ((b == 1) ||
612 ((b == 2) && (*c2 & 0xC0) == 0x80))) {
613 return 0;
614 } else if((*c1 & 0xF8) == 0xF0 &&
615 ((b == 1) ||
616 ((b == 2) && (*c2 & 0xC0) == 0x80) ||
617 ((b == 3) && (*c2 & 0xC0) == 0x80 && (*c3 & 0xC0) == 0x80))) {
618 return 0;
619 } else {
620 return 1;
621 }
622 }
623
624 int
625 utf8size(char *s) {
626 uchar c = *s;
627
628 if(~c & 0x80) {
629 return 1;
630 } else if((c & 0xE0) == 0xC0) {
631 return 2;
632 } else if((c & 0xF0) == 0xE0) {
633 return 3;
634 } else {
635 return 4;
636 }
637 }
638
639 static void
640 selinit(void) {
641 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
642 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
643 sel.mode = 0;
644 sel.ob.x = -1;
645 sel.clip = NULL;
646 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
647 if(sel.xtarget == None)
648 sel.xtarget = XA_STRING;
649 }
650
651 static int
652 x2col(int x) {
653 x -= borderpx;
654 x /= xw.cw;
655
656 return LIMIT(x, 0, term.col-1);
657 }
658
659 static int
660 y2row(int y) {
661 y -= borderpx;
662 y /= xw.ch;
663
664 return LIMIT(y, 0, term.row-1);
665 }
666
667 static void
668 selsort(void) {
669 if(sel.ob.y == sel.oe.y) {
670 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
671 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
672 } else {
673 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
674 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
675 }
676 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
677 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
678 }
679
680 static inline bool
681 selected(int x, int y) {
682 if(sel.ne.y == y && sel.nb.y == y)
683 return BETWEEN(x, sel.nb.x, sel.ne.x);
684
685 if(sel.type == SEL_RECTANGULAR) {
686 return ((sel.nb.y <= y && y <= sel.ne.y)
687 && (sel.nb.x <= x && x <= sel.ne.x));
688 }
689
690 return ((sel.nb.y < y && y < sel.ne.y)
691 || (y == sel.ne.y && x <= sel.ne.x))
692 || (y == sel.nb.y && x >= sel.nb.x
693 && (x <= sel.ne.x || sel.nb.y != sel.ne.y));
694 }
695
696 void
697 selsnap(int mode, int *x, int *y, int direction) {
698 int i;
699
700 switch(mode) {
701 case SNAP_WORD:
702 /*
703 * Snap around if the word wraps around at the end or
704 * beginning of a line.
705 */
706 for(;;) {
707 if(direction < 0 && *x <= 0) {
708 if(*y > 0 && term.line[*y - 1][term.col-1].mode
709 & ATTR_WRAP) {
710 *y -= 1;
711 *x = term.col-1;
712 } else {
713 break;
714 }
715 }
716 if(direction > 0 && *x >= term.col-1) {
717 if(*y < term.row-1 && term.line[*y][*x].mode
718 & ATTR_WRAP) {
719 *y += 1;
720 *x = 0;
721 } else {
722 break;
723 }
724 }
725
726 if(term.line[*y][*x+direction].mode & ATTR_WDUMMY) {
727 *x += direction;
728 continue;
729 }
730
731 if(strchr(worddelimiters,
732 term.line[*y][*x+direction].c[0])) {
733 break;
734 }
735
736 *x += direction;
737 }
738 break;
739 case SNAP_LINE:
740 /*
741 * Snap around if the the previous line or the current one
742 * has set ATTR_WRAP at its end. Then the whole next or
743 * previous line will be selected.
744 */
745 *x = (direction < 0) ? 0 : term.col - 1;
746 if(direction < 0 && *y > 0) {
747 for(; *y > 0; *y += direction) {
748 if(!(term.line[*y-1][term.col-1].mode
749 & ATTR_WRAP)) {
750 break;
751 }
752 }
753 } else if(direction > 0 && *y < term.row-1) {
754 for(; *y < term.row; *y += direction) {
755 if(!(term.line[*y][term.col-1].mode
756 & ATTR_WRAP)) {
757 break;
758 }
759 }
760 }
761 break;
762 default:
763 /*
764 * Select the whole line when the end of line is reached.
765 */
766 if(direction > 0) {
767 i = term.col;
768 while(--i > 0 && term.line[*y][i].c[0] == ' ')
769 /* nothing */;
770 if(i > 0 && i < *x)
771 *x = term.col - 1;
772 }
773 break;
774 }
775 }
776
777 void
778 getbuttoninfo(XEvent *e) {
779 int type;
780 uint state = e->xbutton.state &~Button1Mask;
781
782 sel.alt = IS_SET(MODE_ALTSCREEN);
783
784 sel.oe.x = x2col(e->xbutton.x);
785 sel.oe.y = y2row(e->xbutton.y);
786
787 if(sel.ob.y < sel.oe.y
788 || (sel.ob.y == sel.oe.y && sel.ob.x < sel.oe.x)) {
789 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
790 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
791 } else {
792 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, -1);
793 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, +1);
794 }
795 selsort();
796
797 sel.type = SEL_REGULAR;
798 for(type = 1; type < LEN(selmasks); ++type) {
799 if(match(selmasks[type], state)) {
800 sel.type = type;
801 break;
802 }
803 }
804 }
805
806 void
807 mousereport(XEvent *e) {
808 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
809 button = e->xbutton.button, state = e->xbutton.state,
810 len;
811 char buf[40];
812 static int ox, oy;
813
814 /* from urxvt */
815 if(e->xbutton.type == MotionNotify) {
816 if(x == ox && y == oy)
817 return;
818 if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
819 return;
820 /* MOUSE_MOTION: no reporting if no button is pressed */
821 if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
822 return;
823
824 button = oldbutton + 32;
825 ox = x;
826 oy = y;
827 } else {
828 if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
829 button = 3;
830 } else {
831 button -= Button1;
832 if(button >= 3)
833 button += 64 - 3;
834 }
835 if(e->xbutton.type == ButtonPress) {
836 oldbutton = button;
837 ox = x;
838 oy = y;
839 } else if(e->xbutton.type == ButtonRelease) {
840 oldbutton = 3;
841 /* MODE_MOUSEX10: no button release reporting */
842 if(IS_SET(MODE_MOUSEX10))
843 return;
844 }
845 }
846
847 if(!IS_SET(MODE_MOUSEX10)) {
848 button += (state & ShiftMask ? 4 : 0)
849 + (state & Mod4Mask ? 8 : 0)
850 + (state & ControlMask ? 16 : 0);
851 }
852
853 len = 0;
854 if(IS_SET(MODE_MOUSESGR)) {
855 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
856 button, x+1, y+1,
857 e->xbutton.type == ButtonRelease ? 'm' : 'M');
858 } else if(x < 223 && y < 223) {
859 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
860 32+button, 32+x+1, 32+y+1);
861 } else {
862 return;
863 }
864
865 ttywrite(buf, len);
866 }
867
868 void
869 bpress(XEvent *e) {
870 struct timeval now;
871 Mousekey *mk;
872
873 if(IS_SET(MODE_MOUSE)) {
874 mousereport(e);
875 return;
876 }
877
878 for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
879 if(e->xbutton.button == mk->b
880 && match(mk->mask, e->xbutton.state)) {
881 ttywrite(mk->s, strlen(mk->s));
882 if(IS_SET(MODE_ECHO))
883 techo(mk->s, strlen(mk->s));
884 return;
885 }
886 }
887
888 if(e->xbutton.button == Button1) {
889 gettimeofday(&now, NULL);
890
891 /* Clear previous selection, logically and visually. */
892 selclear(NULL);
893 sel.mode = 1;
894 sel.type = SEL_REGULAR;
895 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
896 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
897
898 /*
899 * If the user clicks below predefined timeouts specific
900 * snapping behaviour is exposed.
901 */
902 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
903 sel.snap = SNAP_LINE;
904 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
905 sel.snap = SNAP_WORD;
906 } else {
907 sel.snap = 0;
908 }
909 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
910 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
911 selsort();
912
913 /*
914 * Draw selection, unless it's regular and we don't want to
915 * make clicks visible
916 */
917 if(sel.snap != 0) {
918 sel.mode++;
919 tsetdirt(sel.nb.y, sel.ne.y);
920 }
921 sel.tclick2 = sel.tclick1;
922 sel.tclick1 = now;
923 }
924 }
925
926 void
927 selcopy(void) {
928 char *str, *ptr;
929 int x, y, bufsize, size, i, ex;
930 Glyph *gp, *last;
931
932 if(sel.ob.x == -1) {
933 str = NULL;
934 } else {
935 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
936 ptr = str = xmalloc(bufsize);
937
938 /* append every set & selected glyph to the selection */
939 for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
940 gp = &term.line[y][0];
941 last = gp + term.col;
942
943 while(--last >= gp && !(selected(last - gp, y) && \
944 strcmp(last->c, " ") != 0))
945 /* nothing */;
946
947 for(x = 0; gp <= last; x++, ++gp) {
948 if(!selected(x, y) || (gp->mode & ATTR_WDUMMY))
949 continue;
950
951 size = utf8size(gp->c);
952 memcpy(ptr, gp->c, size);
953 ptr += size;
954 }
955
956 /*
957 * Copy and pasting of line endings is inconsistent
958 * in the inconsistent terminal and GUI world.
959 * The best solution seems like to produce '\n' when
960 * something is copied from st and convert '\n' to
961 * '\r', when something to be pasted is received by
962 * st.
963 * FIXME: Fix the computer world.
964 */
965 if(y < sel.ne.y && x > 0 && !((gp-1)->mode & ATTR_WRAP))
966 *ptr++ = '\n';
967
968 /*
969 * If the last selected line expands in the selection
970 * after the visible text '\n' is appended.
971 */
972 if(y == sel.ne.y) {
973 i = term.col;
974 while(--i > 0 && term.line[y][i].c[0] == ' ')
975 /* nothing */;
976 ex = sel.ne.x;
977 if(sel.nb.y == sel.ne.y && sel.ne.x < sel.nb.x)
978 ex = sel.nb.x;
979 if(i < ex)
980 *ptr++ = '\n';
981 }
982 }
983 *ptr = 0;
984 }
985 xsetsel(str);
986 }
987
988 void
989 selnotify(XEvent *e) {
990 ulong nitems, ofs, rem;
991 int format;
992 uchar *data, *last, *repl;
993 Atom type;
994
995 ofs = 0;
996 do {
997 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
998 False, AnyPropertyType, &type, &format,
999 &nitems, &rem, &data)) {
1000 fprintf(stderr, "Clipboard allocation failed\n");
1001 return;
1002 }
1003
1004 /*
1005 * As seen in selcopy:
1006 * Line endings are inconsistent in the terminal and GUI world
1007 * copy and pasting. When receiving some selection data,
1008 * replace all '\n' with '\r'.
1009 * FIXME: Fix the computer world.
1010 */
1011 repl = data;
1012 last = data + nitems * format / 8;
1013 while((repl = memchr(repl, '\n', last - repl))) {
1014 *repl++ = '\r';
1015 }
1016
1017 if(IS_SET(MODE_BRCKTPASTE))
1018 ttywrite("\033[200~", 6);
1019 ttywrite((const char *)data, nitems * format / 8);
1020 if(IS_SET(MODE_BRCKTPASTE))
1021 ttywrite("\033[201~", 6);
1022 XFree(data);
1023 /* number of 32-bit chunks returned */
1024 ofs += nitems * format / 32;
1025 } while(rem > 0);
1026 }
1027
1028 void
1029 selpaste(const Arg *dummy) {
1030 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1031 xw.win, CurrentTime);
1032 }
1033
1034 void
1035 clippaste(const Arg *dummy) {
1036 Atom clipboard;
1037
1038 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1039 XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
1040 xw.win, CurrentTime);
1041 }
1042
1043 void
1044 selclear(XEvent *e) {
1045 if(sel.ob.x == -1)
1046 return;
1047 sel.ob.x = -1;
1048 tsetdirt(sel.nb.y, sel.ne.y);
1049 }
1050
1051 void
1052 selrequest(XEvent *e) {
1053 XSelectionRequestEvent *xsre;
1054 XSelectionEvent xev;
1055 Atom xa_targets, string;
1056
1057 xsre = (XSelectionRequestEvent *) e;
1058 xev.type = SelectionNotify;
1059 xev.requestor = xsre->requestor;
1060 xev.selection = xsre->selection;
1061 xev.target = xsre->target;
1062 xev.time = xsre->time;
1063 /* reject */
1064 xev.property = None;
1065
1066 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1067 if(xsre->target == xa_targets) {
1068 /* respond with the supported type */
1069 string = sel.xtarget;
1070 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1071 XA_ATOM, 32, PropModeReplace,
1072 (uchar *) &string, 1);
1073 xev.property = xsre->property;
1074 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
1075 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1076 xsre->target, 8, PropModeReplace,
1077 (uchar *) sel.clip, strlen(sel.clip));
1078 xev.property = xsre->property;
1079 }
1080
1081 /* all done, send a notification to the listener */
1082 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
1083 fprintf(stderr, "Error sending SelectionNotify event\n");
1084 }
1085
1086 void
1087 xsetsel(char *str) {
1088 /* register the selection for both the clipboard and the primary */
1089 Atom clipboard;
1090
1091 free(sel.clip);
1092 sel.clip = str;
1093
1094 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
1095
1096 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1097 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1098 }
1099
1100 void
1101 brelease(XEvent *e) {
1102 if(IS_SET(MODE_MOUSE)) {
1103 mousereport(e);
1104 return;
1105 }
1106
1107 if(e->xbutton.button == Button2) {
1108 selpaste(NULL);
1109 } else if(e->xbutton.button == Button1) {
1110 if(sel.mode < 2) {
1111 selclear(NULL);
1112 } else {
1113 getbuttoninfo(e);
1114 selcopy();
1115 }
1116 sel.mode = 0;
1117 tsetdirt(sel.nb.y, sel.ne.y);
1118 }
1119 }
1120
1121 void
1122 bmotion(XEvent *e) {
1123 int oldey, oldex, oldsby, oldsey;
1124
1125 if(IS_SET(MODE_MOUSE)) {
1126 mousereport(e);
1127 return;
1128 }
1129
1130 if(!sel.mode)
1131 return;
1132
1133 sel.mode++;
1134 oldey = sel.oe.y;
1135 oldex = sel.oe.x;
1136 oldsby = sel.nb.y;
1137 oldsey = sel.ne.y;
1138 getbuttoninfo(e);
1139
1140 if(oldey != sel.oe.y || oldex != sel.oe.x)
1141 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1142 }
1143
1144 void
1145 die(const char *errstr, ...) {
1146 va_list ap;
1147
1148 va_start(ap, errstr);
1149 vfprintf(stderr, errstr, ap);
1150 va_end(ap);
1151 exit(EXIT_FAILURE);
1152 }
1153
1154 void
1155 execsh(void) {
1156 char **args;
1157 char *envshell = getenv("SHELL");
1158 const struct passwd *pass = getpwuid(getuid());
1159 char buf[sizeof(long) * 8 + 1];
1160
1161 unsetenv("COLUMNS");
1162 unsetenv("LINES");
1163 unsetenv("TERMCAP");
1164
1165 if(pass) {
1166 setenv("LOGNAME", pass->pw_name, 1);
1167 setenv("USER", pass->pw_name, 1);
1168 setenv("SHELL", pass->pw_shell, 0);
1169 setenv("HOME", pass->pw_dir, 0);
1170 }
1171
1172 snprintf(buf, sizeof(buf), "%lu", xw.win);
1173 setenv("WINDOWID", buf, 1);
1174
1175 signal(SIGCHLD, SIG_DFL);
1176 signal(SIGHUP, SIG_DFL);
1177 signal(SIGINT, SIG_DFL);
1178 signal(SIGQUIT, SIG_DFL);
1179 signal(SIGTERM, SIG_DFL);
1180 signal(SIGALRM, SIG_DFL);
1181
1182 DEFAULT(envshell, shell);
1183 setenv("TERM", termname, 1);
1184 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
1185 execvp(args[0], args);
1186 exit(EXIT_FAILURE);
1187 }
1188
1189 void
1190 sigchld(int a) {
1191 int stat = 0;
1192
1193 if(waitpid(pid, &stat, 0) < 0)
1194 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
1195
1196 if(WIFEXITED(stat)) {
1197 exit(WEXITSTATUS(stat));
1198 } else {
1199 exit(EXIT_FAILURE);
1200 }
1201 }
1202
1203 void
1204 ttynew(void) {
1205 int m, s;
1206 struct winsize w = {term.row, term.col, 0, 0};
1207
1208 /* seems to work fine on linux, openbsd and freebsd */
1209 if(openpty(&m, &s, NULL, NULL, &w) < 0)
1210 die("openpty failed: %s\n", SERRNO);
1211
1212 switch(pid = fork()) {
1213 case -1:
1214 die("fork failed\n");
1215 break;
1216 case 0:
1217 setsid(); /* create a new process group */
1218 dup2(s, STDIN_FILENO);
1219 dup2(s, STDOUT_FILENO);
1220 dup2(s, STDERR_FILENO);
1221 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1222 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
1223 close(s);
1224 close(m);
1225 execsh();
1226 break;
1227 default:
1228 close(s);
1229 cmdfd = m;
1230 signal(SIGCHLD, sigchld);
1231 if(opt_io) {
1232 iofd = (!strcmp(opt_io, "-")) ?
1233 STDOUT_FILENO :
1234 open(opt_io, O_WRONLY | O_CREAT, 0666);
1235 if(iofd < 0) {
1236 fprintf(stderr, "Error opening %s:%s\n",
1237 opt_io, strerror(errno));
1238 }
1239 }
1240 }
1241 }
1242
1243 void
1244 dump(char c) {
1245 static int col;
1246
1247 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
1248 if(++col % 10 == 0)
1249 fprintf(stderr, "\n");
1250 }
1251
1252 void
1253 ttyread(void) {
1254 static char buf[BUFSIZ];
1255 static int buflen = 0;
1256 char *ptr;
1257 char s[UTF_SIZ];
1258 int charsize; /* size of utf8 char in bytes */
1259 long utf8c;
1260 int ret;
1261
1262 /* append read bytes to unprocessed bytes */
1263 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1264 die("Couldn't read from shell: %s\n", SERRNO);
1265
1266 /* process every complete utf8 char */
1267 buflen += ret;
1268 ptr = buf;
1269 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1270 charsize = utf8decode(ptr, &utf8c);
1271 utf8encode(&utf8c, s);
1272 tputc(s, charsize);
1273 ptr += charsize;
1274 buflen -= charsize;
1275 }
1276
1277 /* keep any uncomplete utf8 char for the next call */
1278 memmove(buf, ptr, buflen);
1279 }
1280
1281 void
1282 ttywrite(const char *s, size_t n) {
1283 if(write(cmdfd, s, n) == -1)
1284 die("write error on tty: %s\n", SERRNO);
1285 }
1286
1287 void
1288 ttyresize(void) {
1289 struct winsize w;
1290
1291 w.ws_row = term.row;
1292 w.ws_col = term.col;
1293 w.ws_xpixel = xw.tw;
1294 w.ws_ypixel = xw.th;
1295 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1296 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1297 }
1298
1299 int
1300 tattrset(int attr) {
1301 int i, j;
1302
1303 for(i = 0; i < term.row-1; i++) {
1304 for(j = 0; j < term.col-1; j++) {
1305 if(term.line[i][j].mode & attr)
1306 return 1;
1307 }
1308 }
1309
1310 return 0;
1311 }
1312
1313 void
1314 tsetdirt(int top, int bot) {
1315 int i;
1316
1317 LIMIT(top, 0, term.row-1);
1318 LIMIT(bot, 0, term.row-1);
1319
1320 for(i = top; i <= bot; i++)
1321 term.dirty[i] = 1;
1322 }
1323
1324 void
1325 tsetdirtattr(int attr) {
1326 int i, j;
1327
1328 for(i = 0; i < term.row-1; i++) {
1329 for(j = 0; j < term.col-1; j++) {
1330 if(term.line[i][j].mode & attr) {
1331 tsetdirt(i, i);
1332 break;
1333 }
1334 }
1335 }
1336 }
1337
1338 void
1339 tfulldirt(void) {
1340 tsetdirt(0, term.row-1);
1341 }
1342
1343 void
1344 tcursor(int mode) {
1345 static TCursor c;
1346
1347 if(mode == CURSOR_SAVE) {
1348 c = term.c;
1349 } else if(mode == CURSOR_LOAD) {
1350 term.c = c;
1351 tmoveto(c.x, c.y);
1352 }
1353 }
1354
1355 void
1356 treset(void) {
1357 uint i;
1358
1359 term.c = (TCursor){{
1360 .mode = ATTR_NULL,
1361 .fg = defaultfg,
1362 .bg = defaultbg
1363 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1364
1365 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1366 for(i = tabspaces; i < term.col; i += tabspaces)
1367 term.tabs[i] = 1;
1368 term.top = 0;
1369 term.bot = term.row - 1;
1370 term.mode = MODE_WRAP;
1371
1372 tclearregion(0, 0, term.col-1, term.row-1);
1373 tmoveto(0, 0);
1374 tcursor(CURSOR_SAVE);
1375 }
1376
1377 void
1378 tnew(int col, int row) {
1379 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1380 tresize(col, row);
1381 term.numlock = 1;
1382
1383 treset();
1384 }
1385
1386 void
1387 tswapscreen(void) {
1388 Line *tmp = term.line;
1389
1390 term.line = term.alt;
1391 term.alt = tmp;
1392 term.mode ^= MODE_ALTSCREEN;
1393 tfulldirt();
1394 }
1395
1396 void
1397 tscrolldown(int orig, int n) {
1398 int i;
1399 Line temp;
1400
1401 LIMIT(n, 0, term.bot-orig+1);
1402
1403 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1404
1405 for(i = term.bot; i >= orig+n; i--) {
1406 temp = term.line[i];
1407 term.line[i] = term.line[i-n];
1408 term.line[i-n] = temp;
1409
1410 term.dirty[i] = 1;
1411 term.dirty[i-n] = 1;
1412 }
1413
1414 selscroll(orig, n);
1415 }
1416
1417 void
1418 tscrollup(int orig, int n) {
1419 int i;
1420 Line temp;
1421 LIMIT(n, 0, term.bot-orig+1);
1422
1423 tclearregion(0, orig, term.col-1, orig+n-1);
1424
1425 for(i = orig; i <= term.bot-n; i++) {
1426 temp = term.line[i];
1427 term.line[i] = term.line[i+n];
1428 term.line[i+n] = temp;
1429
1430 term.dirty[i] = 1;
1431 term.dirty[i+n] = 1;
1432 }
1433
1434 selscroll(orig, -n);
1435 }
1436
1437 void
1438 selscroll(int orig, int n) {
1439 if(sel.ob.x == -1)
1440 return;
1441
1442 if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1443 if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1444 selclear(NULL);
1445 return;
1446 }
1447 if(sel.type == SEL_RECTANGULAR) {
1448 if(sel.ob.y < term.top)
1449 sel.ob.y = term.top;
1450 if(sel.oe.y > term.bot)
1451 sel.oe.y = term.bot;
1452 } else {
1453 if(sel.ob.y < term.top) {
1454 sel.ob.y = term.top;
1455 sel.ob.x = 0;
1456 }
1457 if(sel.oe.y > term.bot) {
1458 sel.oe.y = term.bot;
1459 sel.oe.x = term.col;
1460 }
1461 }
1462 selsort();
1463 }
1464 }
1465
1466 void
1467 tnewline(int first_col) {
1468 int y = term.c.y;
1469
1470 if(y == term.bot) {
1471 tscrollup(term.top, 1);
1472 } else {
1473 y++;
1474 }
1475 tmoveto(first_col ? 0 : term.c.x, y);
1476 }
1477
1478 void
1479 csiparse(void) {
1480 char *p = csiescseq.buf, *np;
1481 long int v;
1482
1483 csiescseq.narg = 0;
1484 if(*p == '?') {
1485 csiescseq.priv = 1;
1486 p++;
1487 }
1488
1489 csiescseq.buf[csiescseq.len] = '\0';
1490 while(p < csiescseq.buf+csiescseq.len) {
1491 np = NULL;
1492 v = strtol(p, &np, 10);
1493 if(np == p)
1494 v = 0;
1495 if(v == LONG_MAX || v == LONG_MIN)
1496 v = -1;
1497 csiescseq.arg[csiescseq.narg++] = v;
1498 p = np;
1499 if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1500 break;
1501 p++;
1502 }
1503 csiescseq.mode = *p;
1504 }
1505
1506 /* for absolute user moves, when decom is set */
1507 void
1508 tmoveato(int x, int y) {
1509 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1510 }
1511
1512 void
1513 tmoveto(int x, int y) {
1514 int miny, maxy;
1515
1516 if(term.c.state & CURSOR_ORIGIN) {
1517 miny = term.top;
1518 maxy = term.bot;
1519 } else {
1520 miny = 0;
1521 maxy = term.row - 1;
1522 }
1523 LIMIT(x, 0, term.col-1);
1524 LIMIT(y, miny, maxy);
1525 term.c.state &= ~CURSOR_WRAPNEXT;
1526 term.c.x = x;
1527 term.c.y = y;
1528 }
1529
1530 void
1531 tsetchar(char *c, Glyph *attr, int x, int y) {
1532 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1533 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1534 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1535 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1536 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1537 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1538 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1539 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1540 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1541 };
1542
1543 /*
1544 * The table is proudly stolen from rxvt.
1545 */
1546 if(attr->mode & ATTR_GFX) {
1547 if(c[0] >= 0x41 && c[0] <= 0x7e
1548 && vt100_0[c[0] - 0x41]) {
1549 c = vt100_0[c[0] - 0x41];
1550 }
1551 }
1552
1553 if(term.line[y][x].mode & ATTR_WIDE) {
1554 if(x+1 < term.col) {
1555 term.line[y][x+1].c[0] = ' ';
1556 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1557 }
1558 } else if(term.line[y][x].mode & ATTR_WDUMMY) {
1559 term.line[y][x-1].c[0] = ' ';
1560 term.line[y][x-1].mode &= ~ATTR_WIDE;
1561 }
1562
1563 term.dirty[y] = 1;
1564 term.line[y][x] = *attr;
1565 memcpy(term.line[y][x].c, c, UTF_SIZ);
1566 }
1567
1568 void
1569 tclearregion(int x1, int y1, int x2, int y2) {
1570 int x, y, temp;
1571
1572 if(x1 > x2)
1573 temp = x1, x1 = x2, x2 = temp;
1574 if(y1 > y2)
1575 temp = y1, y1 = y2, y2 = temp;
1576
1577 LIMIT(x1, 0, term.col-1);
1578 LIMIT(x2, 0, term.col-1);
1579 LIMIT(y1, 0, term.row-1);
1580 LIMIT(y2, 0, term.row-1);
1581
1582 for(y = y1; y <= y2; y++) {
1583 term.dirty[y] = 1;
1584 for(x = x1; x <= x2; x++) {
1585 if(selected(x, y))
1586 selclear(NULL);
1587 term.line[y][x] = term.c.attr;
1588 memcpy(term.line[y][x].c, " ", 2);
1589 }
1590 }
1591 }
1592
1593 void
1594 tdeletechar(int n) {
1595 int src = term.c.x + n;
1596 int dst = term.c.x;
1597 int size = term.col - src;
1598
1599 term.dirty[term.c.y] = 1;
1600
1601 if(src >= term.col) {
1602 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1603 return;
1604 }
1605
1606 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1607 size * sizeof(Glyph));
1608 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1609 }
1610
1611 void
1612 tinsertblank(int n) {
1613 int src = term.c.x;
1614 int dst = src + n;
1615 int size = term.col - dst;
1616
1617 term.dirty[term.c.y] = 1;
1618
1619 if(dst >= term.col) {
1620 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1621 return;
1622 }
1623
1624 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1625 size * sizeof(Glyph));
1626 tclearregion(src, term.c.y, dst - 1, term.c.y);
1627 }
1628
1629 void
1630 tinsertblankline(int n) {
1631 if(term.c.y < term.top || term.c.y > term.bot)
1632 return;
1633
1634 tscrolldown(term.c.y, n);
1635 }
1636
1637 void
1638 tdeleteline(int n) {
1639 if(term.c.y < term.top || term.c.y > term.bot)
1640 return;
1641
1642 tscrollup(term.c.y, n);
1643 }
1644
1645 long
1646 tdefcolor(int *attr, int *npar, int l) {
1647 long idx = -1;
1648 uint r, g, b;
1649
1650 switch (attr[*npar + 1]) {
1651 case 2: /* direct colour in RGB space */
1652 if (*npar + 4 >= l) {
1653 fprintf(stderr,
1654 "erresc(38): Incorrect number of parameters (%d)\n",
1655 *npar);
1656 break;
1657 }
1658 r = attr[*npar + 2];
1659 g = attr[*npar + 3];
1660 b = attr[*npar + 4];
1661 *npar += 4;
1662 if(!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1663 fprintf(stderr, "erresc: bad rgb color (%d,%d,%d)\n",
1664 r, g, b);
1665 else
1666 idx = TRUECOLOR(r, g, b);
1667 break;
1668 case 5: /* indexed colour */
1669 if (*npar + 2 >= l) {
1670 fprintf(stderr,
1671 "erresc(38): Incorrect number of parameters (%d)\n",
1672 *npar);
1673 break;
1674 }
1675 *npar += 2;
1676 if(!BETWEEN(attr[*npar], 0, 255))
1677 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1678 else
1679 idx = attr[*npar];
1680 break;
1681 case 0: /* implemented defined (only foreground) */
1682 case 1: /* transparent */
1683 case 3: /* direct colour in CMY space */
1684 case 4: /* direct colour in CMYK space */
1685 default:
1686 fprintf(stderr,
1687 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1688 }
1689
1690 return idx;
1691 }
1692
1693 void
1694 tsetattr(int *attr, int l) {
1695 int i;
1696 long idx;
1697
1698 for(i = 0; i < l; i++) {
1699 switch(attr[i]) {
1700 case 0:
1701 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE \
1702 | ATTR_BOLD | ATTR_ITALIC \
1703 | ATTR_BLINK);
1704 term.c.attr.fg = defaultfg;
1705 term.c.attr.bg = defaultbg;
1706 break;
1707 case 1:
1708 term.c.attr.mode |= ATTR_BOLD;
1709 break;
1710 case 3:
1711 term.c.attr.mode |= ATTR_ITALIC;
1712 break;
1713 case 4:
1714 term.c.attr.mode |= ATTR_UNDERLINE;
1715 break;
1716 case 5: /* slow blink */
1717 case 6: /* rapid blink */
1718 term.c.attr.mode |= ATTR_BLINK;
1719 break;
1720 case 7:
1721 term.c.attr.mode |= ATTR_REVERSE;
1722 break;
1723 case 21:
1724 case 22:
1725 term.c.attr.mode &= ~ATTR_BOLD;
1726 break;
1727 case 23:
1728 term.c.attr.mode &= ~ATTR_ITALIC;
1729 break;
1730 case 24:
1731 term.c.attr.mode &= ~ATTR_UNDERLINE;
1732 break;
1733 case 25:
1734 case 26:
1735 term.c.attr.mode &= ~ATTR_BLINK;
1736 break;
1737 case 27:
1738 term.c.attr.mode &= ~ATTR_REVERSE;
1739 break;
1740 case 38:
1741 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1742 term.c.attr.fg = idx;
1743 break;
1744 case 39:
1745 term.c.attr.fg = defaultfg;
1746 break;
1747 case 48:
1748 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1749 term.c.attr.bg = idx;
1750 break;
1751 case 49:
1752 term.c.attr.bg = defaultbg;
1753 break;
1754 default:
1755 if(BETWEEN(attr[i], 30, 37)) {
1756 term.c.attr.fg = attr[i] - 30;
1757 } else if(BETWEEN(attr[i], 40, 47)) {
1758 term.c.attr.bg = attr[i] - 40;
1759 } else if(BETWEEN(attr[i], 90, 97)) {
1760 term.c.attr.fg = attr[i] - 90 + 8;
1761 } else if(BETWEEN(attr[i], 100, 107)) {
1762 term.c.attr.bg = attr[i] - 100 + 8;
1763 } else {
1764 fprintf(stderr,
1765 "erresc(default): gfx attr %d unknown\n",
1766 attr[i]), csidump();
1767 }
1768 break;
1769 }
1770 }
1771 }
1772
1773 void
1774 tsetscroll(int t, int b) {
1775 int temp;
1776
1777 LIMIT(t, 0, term.row-1);
1778 LIMIT(b, 0, term.row-1);
1779 if(t > b) {
1780 temp = t;
1781 t = b;
1782 b = temp;
1783 }
1784 term.top = t;
1785 term.bot = b;
1786 }
1787
1788 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1789
1790 void
1791 tsetmode(bool priv, bool set, int *args, int narg) {
1792 int *lim, mode;
1793 bool alt;
1794
1795 for(lim = args + narg; args < lim; ++args) {
1796 if(priv) {
1797 switch(*args) {
1798 break;
1799 case 1: /* DECCKM -- Cursor key */
1800 MODBIT(term.mode, set, MODE_APPCURSOR);
1801 break;
1802 case 5: /* DECSCNM -- Reverse video */
1803 mode = term.mode;
1804 MODBIT(term.mode, set, MODE_REVERSE);
1805 if(mode != term.mode)
1806 redraw(REDRAW_TIMEOUT);
1807 break;
1808 case 6: /* DECOM -- Origin */
1809 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1810 tmoveato(0, 0);
1811 break;
1812 case 7: /* DECAWM -- Auto wrap */
1813 MODBIT(term.mode, set, MODE_WRAP);
1814 break;
1815 case 0: /* Error (IGNORED) */
1816 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1817 case 3: /* DECCOLM -- Column (IGNORED) */
1818 case 4: /* DECSCLM -- Scroll (IGNORED) */
1819 case 8: /* DECARM -- Auto repeat (IGNORED) */
1820 case 18: /* DECPFF -- Printer feed (IGNORED) */
1821 case 19: /* DECPEX -- Printer extent (IGNORED) */
1822 case 42: /* DECNRCM -- National characters (IGNORED) */
1823 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1824 break;
1825 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1826 MODBIT(term.mode, !set, MODE_HIDE);
1827 break;
1828 case 9: /* X10 mouse compatibility mode */
1829 xsetpointermotion(0);
1830 MODBIT(term.mode, 0, MODE_MOUSE);
1831 MODBIT(term.mode, set, MODE_MOUSEX10);
1832 break;
1833 case 1000: /* 1000: report button press */
1834 xsetpointermotion(0);
1835 MODBIT(term.mode, 0, MODE_MOUSE);
1836 MODBIT(term.mode, set, MODE_MOUSEBTN);
1837 break;
1838 case 1002: /* 1002: report motion on button press */
1839 xsetpointermotion(0);
1840 MODBIT(term.mode, 0, MODE_MOUSE);
1841 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1842 break;
1843 case 1003: /* 1003: enable all mouse motions */
1844 xsetpointermotion(set);
1845 MODBIT(term.mode, 0, MODE_MOUSE);
1846 MODBIT(term.mode, set, MODE_MOUSEMANY);
1847 break;
1848 case 1004: /* 1004: send focus events to tty */
1849 MODBIT(term.mode, set, MODE_FOCUS);
1850 break;
1851 case 1006: /* 1006: extended reporting mode */
1852 MODBIT(term.mode, set, MODE_MOUSESGR);
1853 break;
1854 case 1034:
1855 MODBIT(term.mode, set, MODE_8BIT);
1856 break;
1857 case 1049: /* = 1047 and 1048 */
1858 case 47:
1859 case 1047:
1860 if (!allowaltscreen)
1861 break;
1862
1863 alt = IS_SET(MODE_ALTSCREEN);
1864 if(alt) {
1865 tclearregion(0, 0, term.col-1,
1866 term.row-1);
1867 }
1868 if(set ^ alt) /* set is always 1 or 0 */
1869 tswapscreen();
1870 if(*args != 1049)
1871 break;
1872 /* FALLTRU */
1873 case 1048:
1874 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1875 break;
1876 case 2004: /* 2004: bracketed paste mode */
1877 MODBIT(term.mode, set, MODE_BRCKTPASTE);
1878 break;
1879 /* Not implemented mouse modes. See comments there. */
1880 case 1001: /* mouse highlight mode; can hang the
1881 terminal by design when implemented. */
1882 case 1005: /* UTF-8 mouse mode; will confuse
1883 applications not supporting UTF-8
1884 and luit. */
1885 case 1015: /* urxvt mangled mouse mode; incompatible
1886 and can be mistaken for other control
1887 codes. */
1888 default:
1889 fprintf(stderr,
1890 "erresc: unknown private set/reset mode %d\n",
1891 *args);
1892 break;
1893 }
1894 } else {
1895 switch(*args) {
1896 case 0: /* Error (IGNORED) */
1897 break;
1898 case 2: /* KAM -- keyboard action */
1899 MODBIT(term.mode, set, MODE_KBDLOCK);
1900 break;
1901 case 4: /* IRM -- Insertion-replacement */
1902 MODBIT(term.mode, set, MODE_INSERT);
1903 break;
1904 case 12: /* SRM -- Send/Receive */
1905 MODBIT(term.mode, !set, MODE_ECHO);
1906 break;
1907 case 20: /* LNM -- Linefeed/new line */
1908 MODBIT(term.mode, set, MODE_CRLF);
1909 break;
1910 default:
1911 fprintf(stderr,
1912 "erresc: unknown set/reset mode %d\n",
1913 *args);
1914 break;
1915 }
1916 }
1917 }
1918 }
1919
1920 void
1921 csihandle(void) {
1922 switch(csiescseq.mode) {
1923 default:
1924 unknown:
1925 fprintf(stderr, "erresc: unknown csi ");
1926 csidump();
1927 /* die(""); */
1928 break;
1929 case '@': /* ICH -- Insert <n> blank char */
1930 DEFAULT(csiescseq.arg[0], 1);
1931 tinsertblank(csiescseq.arg[0]);
1932 break;
1933 case 'A': /* CUU -- Cursor <n> Up */
1934 DEFAULT(csiescseq.arg[0], 1);
1935 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1936 break;
1937 case 'B': /* CUD -- Cursor <n> Down */
1938 case 'e': /* VPR --Cursor <n> Down */
1939 DEFAULT(csiescseq.arg[0], 1);
1940 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1941 break;
1942 case 'c': /* DA -- Device Attributes */
1943 if(csiescseq.arg[0] == 0)
1944 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1945 break;
1946 case 'C': /* CUF -- Cursor <n> Forward */
1947 case 'a': /* HPR -- Cursor <n> Forward */
1948 DEFAULT(csiescseq.arg[0], 1);
1949 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1950 break;
1951 case 'D': /* CUB -- Cursor <n> Backward */
1952 DEFAULT(csiescseq.arg[0], 1);
1953 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1954 break;
1955 case 'E': /* CNL -- Cursor <n> Down and first col */
1956 DEFAULT(csiescseq.arg[0], 1);
1957 tmoveto(0, term.c.y+csiescseq.arg[0]);
1958 break;
1959 case 'F': /* CPL -- Cursor <n> Up and first col */
1960 DEFAULT(csiescseq.arg[0], 1);
1961 tmoveto(0, term.c.y-csiescseq.arg[0]);
1962 break;
1963 case 'g': /* TBC -- Tabulation clear */
1964 switch(csiescseq.arg[0]) {
1965 case 0: /* clear current tab stop */
1966 term.tabs[term.c.x] = 0;
1967 break;
1968 case 3: /* clear all the tabs */
1969 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1970 break;
1971 default:
1972 goto unknown;
1973 }
1974 break;
1975 case 'G': /* CHA -- Move to <col> */
1976 case '`': /* HPA */
1977 DEFAULT(csiescseq.arg[0], 1);
1978 tmoveto(csiescseq.arg[0]-1, term.c.y);
1979 break;
1980 case 'H': /* CUP -- Move to <row> <col> */
1981 case 'f': /* HVP */
1982 DEFAULT(csiescseq.arg[0], 1);
1983 DEFAULT(csiescseq.arg[1], 1);
1984 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1985 break;
1986 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1987 DEFAULT(csiescseq.arg[0], 1);
1988 while(csiescseq.arg[0]--)
1989 tputtab(1);
1990 break;
1991 case 'J': /* ED -- Clear screen */
1992 selclear(NULL);
1993 switch(csiescseq.arg[0]) {
1994 case 0: /* below */
1995 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1996 if(term.c.y < term.row-1) {
1997 tclearregion(0, term.c.y+1, term.col-1,
1998 term.row-1);
1999 }
2000 break;
2001 case 1: /* above */
2002 if(term.c.y > 1)
2003 tclearregion(0, 0, term.col-1, term.c.y-1);
2004 tclearregion(0, term.c.y, term.c.x, term.c.y);
2005 break;
2006 case 2: /* all */
2007 tclearregion(0, 0, term.col-1, term.row-1);
2008 break;
2009 default:
2010 goto unknown;
2011 }
2012 break;
2013 case 'K': /* EL -- Clear line */
2014 switch(csiescseq.arg[0]) {
2015 case 0: /* right */
2016 tclearregion(term.c.x, term.c.y, term.col-1,
2017 term.c.y);
2018 break;
2019 case 1: /* left */
2020 tclearregion(0, term.c.y, term.c.x, term.c.y);
2021 break;
2022 case 2: /* all */
2023 tclearregion(0, term.c.y, term.col-1, term.c.y);
2024 break;
2025 }
2026 break;
2027 case 'S': /* SU -- Scroll <n> line up */
2028 DEFAULT(csiescseq.arg[0], 1);
2029 tscrollup(term.top, csiescseq.arg[0]);
2030 break;
2031 case 'T': /* SD -- Scroll <n> line down */
2032 DEFAULT(csiescseq.arg[0], 1);
2033 tscrolldown(term.top, csiescseq.arg[0]);
2034 break;
2035 case 'L': /* IL -- Insert <n> blank lines */
2036 DEFAULT(csiescseq.arg[0], 1);
2037 tinsertblankline(csiescseq.arg[0]);
2038 break;
2039 case 'l': /* RM -- Reset Mode */
2040 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2041 break;
2042 case 'M': /* DL -- Delete <n> lines */
2043 DEFAULT(csiescseq.arg[0], 1);
2044 tdeleteline(csiescseq.arg[0]);
2045 break;
2046 case 'X': /* ECH -- Erase <n> char */
2047 DEFAULT(csiescseq.arg[0], 1);
2048 tclearregion(term.c.x, term.c.y,
2049 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2050 break;
2051 case 'P': /* DCH -- Delete <n> char */
2052 DEFAULT(csiescseq.arg[0], 1);
2053 tdeletechar(csiescseq.arg[0]);
2054 break;
2055 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2056 DEFAULT(csiescseq.arg[0], 1);
2057 while(csiescseq.arg[0]--)
2058 tputtab(0);
2059 break;
2060 case 'd': /* VPA -- Move to <row> */
2061 DEFAULT(csiescseq.arg[0], 1);
2062 tmoveato(term.c.x, csiescseq.arg[0]-1);
2063 break;
2064 case 'h': /* SM -- Set terminal mode */
2065 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2066 break;
2067 case 'm': /* SGR -- Terminal attribute (color) */
2068 tsetattr(csiescseq.arg, csiescseq.narg);
2069 break;
2070 case 'n': /* DSR – Device Status Report (cursor position) */
2071 if (csiescseq.arg[0] == 6) {
2072 char buf[40];
2073 int len = snprintf(buf, sizeof(buf),"\033[%i;%iR", term.c.y+1, term.c.x+1);
2074 ttywrite(buf, len);
2075 break;
2076 }
2077 case 'r': /* DECSTBM -- Set Scrolling Region */
2078 if(csiescseq.priv) {
2079 goto unknown;
2080 } else {
2081 DEFAULT(csiescseq.arg[0], 1);
2082 DEFAULT(csiescseq.arg[1], term.row);
2083 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2084 tmoveato(0, 0);
2085 }
2086 break;
2087 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2088 tcursor(CURSOR_SAVE);
2089 break;
2090 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2091 tcursor(CURSOR_LOAD);
2092 break;
2093 }
2094 }
2095
2096 void
2097 csidump(void) {
2098 int i;
2099 uint c;
2100
2101 printf("ESC[");
2102 for(i = 0; i < csiescseq.len; i++) {
2103 c = csiescseq.buf[i] & 0xff;
2104 if(isprint(c)) {
2105 putchar(c);
2106 } else if(c == '\n') {
2107 printf("(\\n)");
2108 } else if(c == '\r') {
2109 printf("(\\r)");
2110 } else if(c == 0x1b) {
2111 printf("(\\e)");
2112 } else {
2113 printf("(%02x)", c);
2114 }
2115 }
2116 putchar('\n');
2117 }
2118
2119 void
2120 csireset(void) {
2121 memset(&csiescseq, 0, sizeof(csiescseq));
2122 }
2123
2124 void
2125 strhandle(void) {
2126 char *p = NULL;
2127 int i, j, narg;
2128
2129 strparse();
2130 narg = strescseq.narg;
2131
2132 switch(strescseq.type) {
2133 case ']': /* OSC -- Operating System Command */
2134 switch(i = atoi(strescseq.args[0])) {
2135 case 0:
2136 case 1:
2137 case 2:
2138 if(narg > 1)
2139 xsettitle(strescseq.args[1]);
2140 break;
2141 case 4: /* color set */
2142 if(narg < 3)
2143 break;
2144 p = strescseq.args[2];
2145 /* fall through */
2146 case 104: /* color reset, here p = NULL */
2147 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2148 if (!xsetcolorname(j, p)) {
2149 fprintf(stderr, "erresc: invalid color %s\n", p);
2150 } else {
2151 /*
2152 * TODO if defaultbg color is changed, borders
2153 * are dirty
2154 */
2155 redraw(0);
2156 }
2157 break;
2158 default:
2159 fprintf(stderr, "erresc: unknown str ");
2160 strdump();
2161 break;
2162 }
2163 break;
2164 case 'k': /* old title set compatibility */
2165 xsettitle(strescseq.args[0]);
2166 break;
2167 case 'P': /* DSC -- Device Control String */
2168 case '_': /* APC -- Application Program Command */
2169 case '^': /* PM -- Privacy Message */
2170 default:
2171 fprintf(stderr, "erresc: unknown str ");
2172 strdump();
2173 /* die(""); */
2174 break;
2175 }
2176 }
2177
2178 void
2179 strparse(void) {
2180 char *p = strescseq.buf;
2181
2182 strescseq.narg = 0;
2183 strescseq.buf[strescseq.len] = '\0';
2184 while(p && strescseq.narg < STR_ARG_SIZ)
2185 strescseq.args[strescseq.narg++] = strsep(&p, ";");
2186 }
2187
2188 void
2189 strdump(void) {
2190 int i;
2191 uint c;
2192
2193 printf("ESC%c", strescseq.type);
2194 for(i = 0; i < strescseq.len; i++) {
2195 c = strescseq.buf[i] & 0xff;
2196 if(c == '\0') {
2197 return;
2198 } else if(isprint(c)) {
2199 putchar(c);
2200 } else if(c == '\n') {
2201 printf("(\\n)");
2202 } else if(c == '\r') {
2203 printf("(\\r)");
2204 } else if(c == 0x1b) {
2205 printf("(\\e)");
2206 } else {
2207 printf("(%02x)", c);
2208 }
2209 }
2210 printf("ESC\\\n");
2211 }
2212
2213 void
2214 strreset(void) {
2215 memset(&strescseq, 0, sizeof(strescseq));
2216 }
2217
2218 void
2219 tputtab(bool forward) {
2220 uint x = term.c.x;
2221
2222 if(forward) {
2223 if(x == term.col)
2224 return;
2225 for(++x; x < term.col && !term.tabs[x]; ++x)
2226 /* nothing */ ;
2227 } else {
2228 if(x == 0)
2229 return;
2230 for(--x; x > 0 && !term.tabs[x]; --x)
2231 /* nothing */ ;
2232 }
2233 tmoveto(x, term.c.y);
2234 }
2235
2236 void
2237 techo(char *buf, int len) {
2238 for(; len > 0; buf++, len--) {
2239 char c = *buf;
2240
2241 if(c == '\033') { /* escape */
2242 tputc("^", 1);
2243 tputc("[", 1);
2244 } else if(c < '\x20') { /* control code */
2245 if(c != '\n' && c != '\r' && c != '\t') {
2246 c |= '\x40';
2247 tputc("^", 1);
2248 }
2249 tputc(&c, 1);
2250 } else {
2251 break;
2252 }
2253 }
2254 if(len)
2255 tputc(buf, len);
2256 }
2257
2258 void
2259 tputc(char *c, int len) {
2260 uchar ascii = *c;
2261 bool control = ascii < '\x20' || ascii == 0177;
2262 long u8char;
2263 int width;
2264
2265 if(len == 1) {
2266 width = 1;
2267 } else {
2268 utf8decode(c, &u8char);
2269 width = wcwidth(u8char);
2270 }
2271
2272 if(iofd != -1) {
2273 if(xwrite(iofd, c, len) < 0) {
2274 fprintf(stderr, "Error writing in %s:%s\n",
2275 opt_io, strerror(errno));
2276 close(iofd);
2277 iofd = -1;
2278 }
2279 }
2280
2281 /*
2282 * STR sequences must be checked before anything else
2283 * because it can use some control codes as part of the sequence.
2284 */
2285 if(term.esc & ESC_STR) {
2286 switch(ascii) {
2287 case '\033':
2288 term.esc = ESC_START | ESC_STR_END;
2289 break;
2290 case '\a': /* backwards compatibility to xterm */
2291 term.esc = 0;
2292 strhandle();
2293 break;
2294 default:
2295 if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
2296 memmove(&strescseq.buf[strescseq.len], c, len);
2297 strescseq.len += len;
2298 } else {
2299 /*
2300 * Here is a bug in terminals. If the user never sends
2301 * some code to stop the str or esc command, then st
2302 * will stop responding. But this is better than
2303 * silently failing with unknown characters. At least
2304 * then users will report back.
2305 *
2306 * In the case users ever get fixed, here is the code:
2307 */
2308 /*
2309 * term.esc = 0;
2310 * strhandle();
2311 */
2312 }
2313 }
2314 return;
2315 }
2316
2317 /*
2318 * Actions of control codes must be performed as soon they arrive
2319 * because they can be embedded inside a control sequence, and
2320 * they must not cause conflicts with sequences.
2321 */
2322 if(control) {
2323 switch(ascii) {
2324 case '\t': /* HT */
2325 tputtab(1);
2326 return;
2327 case '\b': /* BS */
2328 tmoveto(term.c.x-1, term.c.y);
2329 return;
2330 case '\r': /* CR */
2331 tmoveto(0, term.c.y);
2332 return;
2333 case '\f': /* LF */
2334 case '\v': /* VT */
2335 case '\n': /* LF */
2336 /* go to first col if the mode is set */
2337 tnewline(IS_SET(MODE_CRLF));
2338 return;
2339 case '\a': /* BEL */
2340 if(!(xw.state & WIN_FOCUSED))
2341 xseturgency(1);
2342 if (bellvolume)
2343 XBell(xw.dpy, bellvolume);
2344 return;
2345 case '\033': /* ESC */
2346 csireset();
2347 term.esc = ESC_START;
2348 return;
2349 case '\016': /* SO */
2350 case '\017': /* SI */
2351 /*
2352 * Different charsets are hard to handle. Applications
2353 * should use the right alt charset escapes for the
2354 * only reason they still exist: line drawing. The
2355 * rest is incompatible history st should not support.
2356 */
2357 return;
2358 case '\032': /* SUB */
2359 case '\030': /* CAN */
2360 csireset();
2361 return;
2362 case '\005': /* ENQ (IGNORED) */
2363 case '\000': /* NUL (IGNORED) */
2364 case '\021': /* XON (IGNORED) */
2365 case '\023': /* XOFF (IGNORED) */
2366 case 0177: /* DEL (IGNORED) */
2367 return;
2368 }
2369 } else if(term.esc & ESC_START) {
2370 if(term.esc & ESC_CSI) {
2371 csiescseq.buf[csiescseq.len++] = ascii;
2372 if(BETWEEN(ascii, 0x40, 0x7E)
2373 || csiescseq.len >= \
2374 sizeof(csiescseq.buf)-1) {
2375 term.esc = 0;
2376 csiparse();
2377 csihandle();
2378 }
2379 } else if(term.esc & ESC_STR_END) {
2380 term.esc = 0;
2381 if(ascii == '\\')
2382 strhandle();
2383 } else if(term.esc & ESC_ALTCHARSET) {
2384 switch(ascii) {
2385 case '0': /* Line drawing set */
2386 term.c.attr.mode |= ATTR_GFX;
2387 break;
2388 case 'B': /* USASCII */
2389 term.c.attr.mode &= ~ATTR_GFX;
2390 break;
2391 case 'A': /* UK (IGNORED) */
2392 case '<': /* multinational charset (IGNORED) */
2393 case '5': /* Finnish (IGNORED) */
2394 case 'C': /* Finnish (IGNORED) */
2395 case 'K': /* German (IGNORED) */
2396 break;
2397 default:
2398 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2399 }
2400 term.esc = 0;
2401 } else if(term.esc & ESC_TEST) {
2402 if(ascii == '8') { /* DEC screen alignment test. */
2403 char E[UTF_SIZ] = "E";
2404 int x, y;
2405
2406 for(x = 0; x < term.col; ++x) {
2407 for(y = 0; y < term.row; ++y)
2408 tsetchar(E, &term.c.attr, x, y);
2409 }
2410 }
2411 term.esc = 0;
2412 } else {
2413 switch(ascii) {
2414 case '[':
2415 term.esc |= ESC_CSI;
2416 break;
2417 case '#':
2418 term.esc |= ESC_TEST;
2419 break;
2420 case 'P': /* DCS -- Device Control String */
2421 case '_': /* APC -- Application Program Command */
2422 case '^': /* PM -- Privacy Message */
2423 case ']': /* OSC -- Operating System Command */
2424 case 'k': /* old title set compatibility */
2425 strreset();
2426 strescseq.type = ascii;
2427 term.esc |= ESC_STR;
2428 break;
2429 case '(': /* set primary charset G0 */
2430 term.esc |= ESC_ALTCHARSET;
2431 break;
2432 case ')': /* set secondary charset G1 (IGNORED) */
2433 case '*': /* set tertiary charset G2 (IGNORED) */
2434 case '+': /* set quaternary charset G3 (IGNORED) */
2435 term.esc = 0;
2436 break;
2437 case 'D': /* IND -- Linefeed */
2438 if(term.c.y == term.bot) {
2439 tscrollup(term.top, 1);
2440 } else {
2441 tmoveto(term.c.x, term.c.y+1);
2442 }
2443 term.esc = 0;
2444 break;
2445 case 'E': /* NEL -- Next line */
2446 tnewline(1); /* always go to first col */
2447 term.esc = 0;
2448 break;
2449 case 'H': /* HTS -- Horizontal tab stop */
2450 term.tabs[term.c.x] = 1;
2451 term.esc = 0;
2452 break;
2453 case 'M': /* RI -- Reverse index */
2454 if(term.c.y == term.top) {
2455 tscrolldown(term.top, 1);
2456 } else {
2457 tmoveto(term.c.x, term.c.y-1);
2458 }
2459 term.esc = 0;
2460 break;
2461 case 'Z': /* DECID -- Identify Terminal */
2462 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2463 term.esc = 0;
2464 break;
2465 case 'c': /* RIS -- Reset to inital state */
2466 treset();
2467 term.esc = 0;
2468 xresettitle();
2469 xloadcols();
2470 break;
2471 case '=': /* DECPAM -- Application keypad */
2472 term.mode |= MODE_APPKEYPAD;
2473 term.esc = 0;
2474 break;
2475 case '>': /* DECPNM -- Normal keypad */
2476 term.mode &= ~MODE_APPKEYPAD;
2477 term.esc = 0;
2478 break;
2479 case '7': /* DECSC -- Save Cursor */
2480 tcursor(CURSOR_SAVE);
2481 term.esc = 0;
2482 break;
2483 case '8': /* DECRC -- Restore Cursor */
2484 tcursor(CURSOR_LOAD);
2485 term.esc = 0;
2486 break;
2487 case '\\': /* ST -- Stop */
2488 term.esc = 0;
2489 break;
2490 default:
2491 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2492 (uchar) ascii, isprint(ascii)? ascii:'.');
2493 term.esc = 0;
2494 }
2495 }
2496 /*
2497 * All characters which form part of a sequence are not
2498 * printed
2499 */
2500 return;
2501 }
2502 /*
2503 * Display control codes only if we are in graphic mode
2504 */
2505 if(control && !(term.c.attr.mode & ATTR_GFX))
2506 return;
2507 if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
2508 selclear(NULL);
2509 if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2510 term.line[term.c.y][term.c.x].mode |= ATTR_WRAP;
2511 tnewline(1);
2512 }
2513
2514 if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col) {
2515 memmove(&term.line[term.c.y][term.c.x+1],
2516 &term.line[term.c.y][term.c.x],
2517 (term.col - term.c.x - 1) * sizeof(Glyph));
2518 }
2519
2520 if(term.c.x+width > term.col)
2521 tnewline(1);
2522
2523 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2524
2525 if(width == 2) {
2526 term.line[term.c.y][term.c.x].mode |= ATTR_WIDE;
2527 if(term.c.x+1 < term.col) {
2528 term.line[term.c.y][term.c.x+1].c[0] = '\0';
2529 term.line[term.c.y][term.c.x+1].mode = ATTR_WDUMMY;
2530 }
2531 }
2532 if(term.c.x+width < term.col) {
2533 tmoveto(term.c.x+width, term.c.y);
2534 } else {
2535 term.c.state |= CURSOR_WRAPNEXT;
2536 }
2537 }
2538
2539 int
2540 tresize(int col, int row) {
2541 int i;
2542 int minrow = MIN(row, term.row);
2543 int mincol = MIN(col, term.col);
2544 int slide = term.c.y - row + 1;
2545 bool *bp;
2546 Line *orig;
2547
2548 if(col < 1 || row < 1)
2549 return 0;
2550
2551 /* free unneeded rows */
2552 i = 0;
2553 if(slide > 0) {
2554 /*
2555 * slide screen to keep cursor where we expect it -
2556 * tscrollup would work here, but we can optimize to
2557 * memmove because we're freeing the earlier lines
2558 */
2559 for(/* i = 0 */; i < slide; i++) {
2560 free(term.line[i]);
2561 free(term.alt[i]);
2562 }
2563 memmove(term.line, term.line + slide, row * sizeof(Line));
2564 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2565 }
2566 for(i += row; i < term.row; i++) {
2567 free(term.line[i]);
2568 free(term.alt[i]);
2569 }
2570
2571 /* resize to new height */
2572 term.line = xrealloc(term.line, row * sizeof(Line));
2573 term.alt = xrealloc(term.alt, row * sizeof(Line));
2574 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2575 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2576
2577 /* resize each row to new width, zero-pad if needed */
2578 for(i = 0; i < minrow; i++) {
2579 term.dirty[i] = 1;
2580 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2581 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2582 }
2583
2584 /* allocate any new rows */
2585 for(/* i == minrow */; i < row; i++) {
2586 term.dirty[i] = 1;
2587 term.line[i] = xmalloc(col * sizeof(Glyph));
2588 term.alt[i] = xmalloc(col * sizeof(Glyph));
2589 }
2590 if(col > term.col) {
2591 bp = term.tabs + term.col;
2592
2593 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2594 while(--bp > term.tabs && !*bp)
2595 /* nothing */ ;
2596 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2597 *bp = 1;
2598 }
2599 /* update terminal size */
2600 term.col = col;
2601 term.row = row;
2602 /* reset scrolling region */
2603 tsetscroll(0, row-1);
2604 /* make use of the LIMIT in tmoveto */
2605 tmoveto(term.c.x, term.c.y);
2606 /* Clearing both screens */
2607 orig = term.line;
2608 do {
2609 if(mincol < col && 0 < minrow) {
2610 tclearregion(mincol, 0, col - 1, minrow - 1);
2611 }
2612 if(0 < col && minrow < row) {
2613 tclearregion(0, minrow, col - 1, row - 1);
2614 }
2615 tswapscreen();
2616 } while(orig != term.line);
2617
2618 return (slide > 0);
2619 }
2620
2621 void
2622 xresize(int col, int row) {
2623 xw.tw = MAX(1, col * xw.cw);
2624 xw.th = MAX(1, row * xw.ch);
2625
2626 XFreePixmap(xw.dpy, xw.buf);
2627 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2628 DefaultDepth(xw.dpy, xw.scr));
2629 XftDrawChange(xw.draw, xw.buf);
2630 xclear(0, 0, xw.w, xw.h);
2631 }
2632
2633 static inline ushort
2634 sixd_to_16bit(int x) {
2635 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
2636 }
2637
2638 void
2639 xloadcols(void) {
2640 int i, r, g, b;
2641 XRenderColor color = { .alpha = 0xffff };
2642 static bool loaded;
2643 Colour *cp;
2644
2645 if(loaded) {
2646 for (cp = dc.col; cp < dc.col + LEN(dc.col); ++cp)
2647 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
2648 }
2649
2650 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2651 for(i = 0; i < LEN(colorname); i++) {
2652 if(!colorname[i])
2653 continue;
2654 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2655 die("Could not allocate color '%s'\n", colorname[i]);
2656 }
2657 }
2658
2659 /* load colors [16-255] ; same colors as xterm */
2660 for(i = 16, r = 0; r < 6; r++) {
2661 for(g = 0; g < 6; g++) {
2662 for(b = 0; b < 6; b++) {
2663 color.red = sixd_to_16bit(r);
2664 color.green = sixd_to_16bit(g);
2665 color.blue = sixd_to_16bit(b);
2666 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
2667 die("Could not allocate color %d\n", i);
2668 }
2669 i++;
2670 }
2671 }
2672 }
2673
2674 for(r = 0; r < 24; r++, i++) {
2675 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
2676 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
2677 &dc.col[i])) {
2678 die("Could not allocate color %d\n", i);
2679 }
2680 }
2681 loaded = true;
2682 }
2683
2684 int
2685 xsetcolorname(int x, const char *name) {
2686 XRenderColor color = { .alpha = 0xffff };
2687 Colour colour;
2688 if (x < 0 || x > LEN(colorname))
2689 return -1;
2690 if(!name) {
2691 if(16 <= x && x < 16 + 216) {
2692 int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
2693 color.red = sixd_to_16bit(r);
2694 color.green = sixd_to_16bit(g);
2695 color.blue = sixd_to_16bit(b);
2696 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2697 return 0; /* something went wrong */
2698 dc.col[x] = colour;
2699 return 1;
2700 } else if (16 + 216 <= x && x < 256) {
2701 color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
2702 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2703 return 0; /* something went wrong */
2704 dc.col[x] = colour;
2705 return 1;
2706 } else {
2707 name = colorname[x];
2708 }
2709 }
2710 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
2711 return 0;
2712 dc.col[x] = colour;
2713 return 1;
2714 }
2715
2716 void
2717 xtermclear(int col1, int row1, int col2, int row2) {
2718 XftDrawRect(xw.draw,
2719 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2720 borderpx + col1 * xw.cw,
2721 borderpx + row1 * xw.ch,
2722 (col2-col1+1) * xw.cw,
2723 (row2-row1+1) * xw.ch);
2724 }
2725
2726 /*
2727 * Absolute coordinates.
2728 */
2729 void
2730 xclear(int x1, int y1, int x2, int y2) {
2731 XftDrawRect(xw.draw,
2732 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2733 x1, y1, x2-x1, y2-y1);
2734 }
2735
2736 void
2737 xhints(void) {
2738 XClassHint class = {opt_class ? opt_class : termname, termname};
2739 XWMHints wm = {.flags = InputHint, .input = 1};
2740 XSizeHints *sizeh = NULL;
2741
2742 sizeh = XAllocSizeHints();
2743 if(xw.isfixed == False) {
2744 sizeh->flags = PSize | PResizeInc | PBaseSize;
2745 sizeh->height = xw.h;
2746 sizeh->width = xw.w;
2747 sizeh->height_inc = xw.ch;
2748 sizeh->width_inc = xw.cw;
2749 sizeh->base_height = 2 * borderpx;
2750 sizeh->base_width = 2 * borderpx;
2751 } else {
2752 sizeh->flags = PMaxSize | PMinSize;
2753 sizeh->min_width = sizeh->max_width = xw.fw;
2754 sizeh->min_height = sizeh->max_height = xw.fh;
2755 }
2756
2757 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2758 XFree(sizeh);
2759 }
2760
2761 int
2762 xloadfont(Font *f, FcPattern *pattern) {
2763 FcPattern *match;
2764 FcResult result;
2765
2766 match = FcFontMatch(NULL, pattern, &result);
2767 if(!match)
2768 return 1;
2769
2770 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
2771 FcPatternDestroy(match);
2772 return 1;
2773 }
2774
2775 f->set = NULL;
2776 f->pattern = FcPatternDuplicate(pattern);
2777
2778 f->ascent = f->match->ascent;
2779 f->descent = f->match->descent;
2780 f->lbearing = 0;
2781 f->rbearing = f->match->max_advance_width;
2782
2783 f->height = f->ascent + f->descent;
2784 f->width = f->lbearing + f->rbearing;
2785
2786 return 0;
2787 }
2788
2789 void
2790 xloadfonts(char *fontstr, int fontsize) {
2791 FcPattern *pattern;
2792 FcResult result;
2793 double fontval;
2794
2795 if(fontstr[0] == '-') {
2796 pattern = XftXlfdParse(fontstr, False, False);
2797 } else {
2798 pattern = FcNameParse((FcChar8 *)fontstr);
2799 }
2800
2801 if(!pattern)
2802 die("st: can't open font %s\n", fontstr);
2803
2804 if(fontsize > 0) {
2805 FcPatternDel(pattern, FC_PIXEL_SIZE);
2806 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2807 usedfontsize = fontsize;
2808 } else {
2809 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2810 if(result == FcResultMatch) {
2811 usedfontsize = (int)fontval;
2812 } else {
2813 /*
2814 * Default font size is 12, if none given. This is to
2815 * have a known usedfontsize value.
2816 */
2817 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2818 usedfontsize = 12;
2819 }
2820 }
2821
2822 FcConfigSubstitute(0, pattern, FcMatchPattern);
2823 FcDefaultSubstitute(pattern);
2824
2825 if(xloadfont(&dc.font, pattern))
2826 die("st: can't open font %s\n", fontstr);
2827
2828 /* Setting character width and height. */
2829 xw.cw = CEIL(dc.font.width * cwscale);
2830 xw.ch = CEIL(dc.font.height * chscale);
2831
2832 FcPatternDel(pattern, FC_SLANT);
2833 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2834 if(xloadfont(&dc.ifont, pattern))
2835 die("st: can't open font %s\n", fontstr);
2836
2837 FcPatternDel(pattern, FC_WEIGHT);
2838 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2839 if(xloadfont(&dc.ibfont, pattern))
2840 die("st: can't open font %s\n", fontstr);
2841
2842 FcPatternDel(pattern, FC_SLANT);
2843 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
2844 if(xloadfont(&dc.bfont, pattern))
2845 die("st: can't open font %s\n", fontstr);
2846
2847 FcPatternDestroy(pattern);
2848 }
2849
2850 int
2851 xloadfontset(Font *f) {
2852 FcResult result;
2853
2854 if(!(f->set = FcFontSort(0, f->pattern, FcTrue, 0, &result)))
2855 return 1;
2856 return 0;
2857 }
2858
2859 void
2860 xunloadfont(Font *f) {
2861 XftFontClose(xw.dpy, f->match);
2862 FcPatternDestroy(f->pattern);
2863 if(f->set)
2864 FcFontSetDestroy(f->set);
2865 }
2866
2867 void
2868 xunloadfonts(void) {
2869 int i;
2870
2871 /* Free the loaded fonts in the font cache. */
2872 for(i = 0; i < frclen; i++) {
2873 XftFontClose(xw.dpy, frc[i].font);
2874 }
2875 frclen = 0;
2876
2877 xunloadfont(&dc.font);
2878 xunloadfont(&dc.bfont);
2879 xunloadfont(&dc.ifont);
2880 xunloadfont(&dc.ibfont);
2881 }
2882
2883 void
2884 xzoom(const Arg *arg) {
2885 xunloadfonts();
2886 xloadfonts(usedfont, usedfontsize + arg->i);
2887 cresize(0, 0);
2888 redraw(0);
2889 }
2890
2891 void
2892 xinit(void) {
2893 XGCValues gcvalues;
2894 Cursor cursor;
2895 Window parent;
2896 int sw, sh;
2897
2898 if(!(xw.dpy = XOpenDisplay(NULL)))
2899 die("Can't open display\n");
2900 xw.scr = XDefaultScreen(xw.dpy);
2901 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2902
2903 /* font */
2904 if(!FcInit())
2905 die("Could not init fontconfig.\n");
2906
2907 usedfont = (opt_font == NULL)? font : opt_font;
2908 xloadfonts(usedfont, 0);
2909
2910 /* colors */
2911 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2912 xloadcols();
2913
2914 /* adjust fixed window geometry */
2915 if(xw.isfixed) {
2916 sw = DisplayWidth(xw.dpy, xw.scr);
2917 sh = DisplayHeight(xw.dpy, xw.scr);
2918 if(xw.fx < 0)
2919 xw.fx = sw + xw.fx - xw.fw - 1;
2920 if(xw.fy < 0)
2921 xw.fy = sh + xw.fy - xw.fh - 1;
2922
2923 xw.h = xw.fh;
2924 xw.w = xw.fw;
2925 } else {
2926 /* window - default size */
2927 xw.h = 2 * borderpx + term.row * xw.ch;
2928 xw.w = 2 * borderpx + term.col * xw.cw;
2929 xw.fx = 0;
2930 xw.fy = 0;
2931 }
2932
2933 /* Events */
2934 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
2935 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
2936 xw.attrs.bit_gravity = NorthWestGravity;
2937 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
2938 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2939 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2940 xw.attrs.colormap = xw.cmap;
2941
2942 parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
2943 XRootWindow(xw.dpy, xw.scr);
2944 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2945 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2946 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
2947 | CWEventMask | CWColormap, &xw.attrs);
2948
2949 memset(&gcvalues, 0, sizeof(gcvalues));
2950 gcvalues.graphics_exposures = False;
2951 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
2952 &gcvalues);
2953 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2954 DefaultDepth(xw.dpy, xw.scr));
2955 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
2956 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
2957
2958 /* Xft rendering context */
2959 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2960
2961 /* input methods */
2962 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2963 XSetLocaleModifiers("@im=local");
2964 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2965 XSetLocaleModifiers("@im=");
2966 if((xw.xim = XOpenIM(xw.dpy,
2967 NULL, NULL, NULL)) == NULL) {
2968 die("XOpenIM failed. Could not open input"
2969 " device.\n");
2970 }
2971 }
2972 }
2973 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2974 | XIMStatusNothing, XNClientWindow, xw.win,
2975 XNFocusWindow, xw.win, NULL);
2976 if(xw.xic == NULL)
2977 die("XCreateIC failed. Could not obtain input method.\n");
2978
2979 /* white cursor, black outline */
2980 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2981 XDefineCursor(xw.dpy, xw.win, cursor);
2982 XRecolorCursor(xw.dpy, cursor,
2983 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2984 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2985
2986 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2987 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2988 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2989
2990 xresettitle();
2991 XMapWindow(xw.dpy, xw.win);
2992 xhints();
2993 XSync(xw.dpy, 0);
2994 }
2995
2996 void
2997 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2998 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2999 width = charlen * xw.cw, xp, i;
3000 int frcflags;
3001 int u8fl, u8fblen, u8cblen, doesexist;
3002 char *u8c, *u8fs;
3003 long u8char;
3004 Font *font = &dc.font;
3005 FcResult fcres;
3006 FcPattern *fcpattern, *fontpattern;
3007 FcFontSet *fcsets[] = { NULL };
3008 FcCharSet *fccharset;
3009 Colour *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3010 XRenderColor colfg, colbg;
3011 Rectangle r;
3012 int oneatatime;
3013
3014 frcflags = FRC_NORMAL;
3015
3016 if(base.mode & ATTR_ITALIC) {
3017 if(base.fg == defaultfg)
3018 base.fg = defaultitalic;
3019 font = &dc.ifont;
3020 frcflags = FRC_ITALIC;
3021 } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
3022 if(base.fg == defaultfg)
3023 base.fg = defaultitalic;
3024 font = &dc.ibfont;
3025 frcflags = FRC_ITALICBOLD;
3026 } else if(base.mode & ATTR_UNDERLINE) {
3027 if(base.fg == defaultfg)
3028 base.fg = defaultunderline;
3029 }
3030 if(IS_TRUECOL(base.fg)) {
3031 colfg.red = TRUERED(base.fg);
3032 colfg.green = TRUEGREEN(base.fg);
3033 colfg.blue = TRUEBLUE(base.fg);
3034 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3035 fg = &truefg;
3036 } else {
3037 fg = &dc.col[base.fg];
3038 }
3039
3040 if(IS_TRUECOL(base.bg)) {
3041 colbg.green = TRUEGREEN(base.bg);
3042 colbg.red = TRUERED(base.bg);
3043 colbg.blue = TRUEBLUE(base.bg);
3044 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3045 bg = &truebg;
3046 } else {
3047 bg = &dc.col[base.bg];
3048 }
3049
3050
3051
3052 if(base.mode & ATTR_BOLD) {
3053 if(BETWEEN(base.fg, 0, 7)) {
3054 /* basic system colors */
3055 fg = &dc.col[base.fg + 8];
3056 } else if(BETWEEN(base.fg, 16, 195)) {
3057 /* 256 colors */
3058 fg = &dc.col[base.fg + 36];
3059 } else if(BETWEEN(base.fg, 232, 251)) {
3060 /* greyscale */
3061 fg = &dc.col[base.fg + 4];
3062 }
3063 /*
3064 * Those ranges will not be brightened:
3065 * 8 - 15 – bright system colors
3066 * 196 - 231 – highest 256 color cube
3067 * 252 - 255 – brightest colors in greyscale
3068 */
3069 font = &dc.bfont;
3070 frcflags = FRC_BOLD;
3071 }
3072
3073 if(IS_SET(MODE_REVERSE)) {
3074 if(fg == &dc.col[defaultfg]) {
3075 fg = &dc.col[defaultbg];
3076 } else {
3077 colfg.red = ~fg->color.red;
3078 colfg.green = ~fg->color.green;
3079 colfg.blue = ~fg->color.blue;
3080 colfg.alpha = fg->color.alpha;
3081 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3082 fg = &revfg;
3083 }
3084
3085 if(bg == &dc.col[defaultbg]) {
3086 bg = &dc.col[defaultfg];
3087 } else {
3088 colbg.red = ~bg->color.red;
3089 colbg.green = ~bg->color.green;
3090 colbg.blue = ~bg->color.blue;
3091 colbg.alpha = bg->color.alpha;
3092 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
3093 bg = &revbg;
3094 }
3095 }
3096
3097 if(base.mode & ATTR_REVERSE) {
3098 temp = fg;
3099 fg = bg;
3100 bg = temp;
3101 }
3102
3103 if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3104 fg = bg;
3105
3106 /* Intelligent cleaning up of the borders. */
3107 if(x == 0) {
3108 xclear(0, (y == 0)? 0 : winy, borderpx,
3109 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3110 }
3111 if(x + charlen >= term.col) {
3112 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3113 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3114 }
3115 if(y == 0)
3116 xclear(winx, 0, winx + width, borderpx);
3117 if(y == term.row-1)
3118 xclear(winx, winy + xw.ch, winx + width, xw.h);
3119
3120 /* Clean up the region we want to draw to. */
3121 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3122
3123 /* Set the clip region because Xft is sometimes dirty. */
3124 r.x = 0;
3125 r.y = 0;
3126 r.height = xw.ch;
3127 r.width = width;
3128 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3129
3130 for(xp = winx; bytelen > 0;) {
3131 /*
3132 * Search for the range in the to be printed string of glyphs
3133 * that are in the main font. Then print that range. If
3134 * some glyph is found that is not in the font, do the
3135 * fallback dance.
3136 */
3137 u8fs = s;
3138 u8fblen = 0;
3139 u8fl = 0;
3140 oneatatime = font->width != xw.cw;
3141 for(;;) {
3142 u8c = s;
3143 u8cblen = utf8decode(s, &u8char);
3144 s += u8cblen;
3145 bytelen -= u8cblen;
3146
3147 doesexist = XftCharExists(xw.dpy, font->match, u8char);
3148 if(oneatatime || !doesexist || bytelen <= 0) {
3149 if(oneatatime || bytelen <= 0) {
3150 if(doesexist) {
3151 u8fl++;
3152 u8fblen += u8cblen;
3153 }
3154 }
3155
3156 if(u8fl > 0) {
3157 XftDrawStringUtf8(xw.draw, fg,
3158 font->match, xp,
3159 winy + font->ascent,
3160 (FcChar8 *)u8fs,
3161 u8fblen);
3162 xp += xw.cw * u8fl;
3163
3164 }
3165 break;
3166 }
3167
3168 u8fl++;
3169 u8fblen += u8cblen;
3170 }
3171 if(doesexist) {
3172 if (oneatatime)
3173 continue;
3174 break;
3175 }
3176
3177 /* Search the font cache. */
3178 for(i = 0; i < frclen; i++) {
3179 if(XftCharExists(xw.dpy, frc[i].font, u8char)
3180 && frc[i].flags == frcflags) {
3181 break;
3182 }
3183 }
3184
3185 /* Nothing was found. */
3186 if(i >= frclen) {
3187 if(!font->set)
3188 xloadfontset(font);
3189 fcsets[0] = font->set;
3190
3191 /*
3192 * Nothing was found in the cache. Now use
3193 * some dozen of Fontconfig calls to get the
3194 * font for one single character.
3195 */
3196 fcpattern = FcPatternDuplicate(font->pattern);
3197 fccharset = FcCharSetCreate();
3198
3199 FcCharSetAddChar(fccharset, u8char);
3200 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3201 fccharset);
3202 FcPatternAddBool(fcpattern, FC_SCALABLE,
3203 FcTrue);
3204
3205 FcConfigSubstitute(0, fcpattern,
3206 FcMatchPattern);
3207 FcDefaultSubstitute(fcpattern);
3208
3209 fontpattern = FcFontSetMatch(0, fcsets,
3210 FcTrue, fcpattern, &fcres);
3211
3212 /*
3213 * Overwrite or create the new cache entry.
3214 */
3215 if(frclen >= LEN(frc)) {
3216 frclen = LEN(frc) - 1;
3217 XftFontClose(xw.dpy, frc[frclen].font);
3218 }
3219
3220 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3221 fontpattern);
3222 frc[frclen].flags = frcflags;
3223
3224 i = frclen;
3225 frclen++;
3226
3227 FcPatternDestroy(fcpattern);
3228 FcCharSetDestroy(fccharset);
3229 }
3230
3231 XftDrawStringUtf8(xw.draw, fg, frc[i].font,
3232 xp, winy + frc[i].font->ascent,
3233 (FcChar8 *)u8c, u8cblen);
3234
3235 xp += xw.cw * wcwidth(u8char);
3236 }
3237
3238 /*
3239 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
3240 winy + font->ascent, (FcChar8 *)s, bytelen);
3241 */
3242
3243 if(base.mode & ATTR_UNDERLINE) {
3244 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
3245 width, 1);
3246 }
3247
3248 /* Reset clip to none. */
3249 XftDrawSetClip(xw.draw, 0);
3250 }
3251
3252 void
3253 xdrawcursor(void) {
3254 static int oldx = 0, oldy = 0;
3255 int sl, width, curx;
3256 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
3257
3258 LIMIT(oldx, 0, term.col-1);
3259 LIMIT(oldy, 0, term.row-1);
3260
3261 curx = term.c.x;
3262
3263 /* adjust position if in dummy */
3264 if(term.line[oldy][oldx].mode & ATTR_WDUMMY)
3265 oldx--;
3266 if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3267 curx--;
3268
3269 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
3270
3271 /* remove the old cursor */
3272 sl = utf8size(term.line[oldy][oldx].c);
3273 width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1;
3274 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
3275 oldy, width, sl);
3276
3277 /* draw the new one */
3278 if(!(IS_SET(MODE_HIDE))) {
3279 if(xw.state & WIN_FOCUSED) {
3280 if(IS_SET(MODE_REVERSE)) {
3281 g.mode |= ATTR_REVERSE;
3282 g.fg = defaultcs;
3283 g.bg = defaultfg;
3284 }
3285
3286 sl = utf8size(g.c);
3287 width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
3288 ? 2 : 1;
3289 xdraws(g.c, g, term.c.x, term.c.y, width, sl);
3290 } else {
3291 XftDrawRect(xw.draw, &dc.col[defaultcs],
3292 borderpx + curx * xw.cw,
3293 borderpx + term.c.y * xw.ch,
3294 xw.cw - 1, 1);
3295 XftDrawRect(xw.draw, &dc.col[defaultcs],
3296 borderpx + curx * xw.cw,
3297 borderpx + term.c.y * xw.ch,
3298 1, xw.ch - 1);
3299 XftDrawRect(xw.draw, &dc.col[defaultcs],
3300 borderpx + (curx + 1) * xw.cw - 1,
3301 borderpx + term.c.y * xw.ch,
3302 1, xw.ch - 1);
3303 XftDrawRect(xw.draw, &dc.col[defaultcs],
3304 borderpx + curx * xw.cw,
3305 borderpx + (term.c.y + 1) * xw.ch - 1,
3306 xw.cw, 1);
3307 }
3308 oldx = curx, oldy = term.c.y;
3309 }
3310 }
3311
3312
3313 void
3314 xsettitle(char *p) {
3315 XTextProperty prop;
3316
3317 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3318 &prop);
3319 XSetWMName(xw.dpy, xw.win, &prop);
3320 XFree(prop.value);
3321 }
3322
3323 void
3324 xresettitle(void) {
3325 xsettitle(opt_title ? opt_title : "st");
3326 }
3327
3328 void
3329 redraw(int timeout) {
3330 struct timespec tv = {0, timeout * 1000};
3331
3332 tfulldirt();
3333 draw();
3334
3335 if(timeout > 0) {
3336 nanosleep(&tv, NULL);
3337 XSync(xw.dpy, False); /* necessary for a good tput flash */
3338 }
3339 }
3340
3341 void
3342 draw(void) {
3343 drawregion(0, 0, term.col, term.row);
3344 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3345 xw.h, 0, 0);
3346 XSetForeground(xw.dpy, dc.gc,
3347 dc.col[IS_SET(MODE_REVERSE)?
3348 defaultfg : defaultbg].pixel);
3349 }
3350
3351 void
3352 drawregion(int x1, int y1, int x2, int y2) {
3353 int ic, ib, x, y, ox, sl;
3354 Glyph base, new;
3355 char buf[DRAW_BUF_SIZ];
3356 bool ena_sel = sel.ob.x != -1;
3357 long u8char;
3358
3359 if(sel.alt ^ IS_SET(MODE_ALTSCREEN))
3360 ena_sel = 0;
3361
3362 if(!(xw.state & WIN_VISIBLE))
3363 return;
3364
3365 for(y = y1; y < y2; y++) {
3366 if(!term.dirty[y])
3367 continue;
3368
3369 xtermclear(0, y, term.col, y);
3370 term.dirty[y] = 0;
3371 base = term.line[y][0];
3372 ic = ib = ox = 0;
3373 for(x = x1; x < x2; x++) {
3374 new = term.line[y][x];
3375 if(new.mode == ATTR_WDUMMY)
3376 continue;
3377 if(ena_sel && selected(x, y))
3378 new.mode ^= ATTR_REVERSE;
3379 if(ib > 0 && (ATTRCMP(base, new)
3380 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
3381 xdraws(buf, base, ox, y, ic, ib);
3382 ic = ib = 0;
3383 }
3384 if(ib == 0) {
3385 ox = x;
3386 base = new;
3387 }
3388
3389 sl = utf8decode(new.c, &u8char);
3390 memcpy(buf+ib, new.c, sl);
3391 ib += sl;
3392 ic += (new.mode & ATTR_WIDE)? 2 : 1;
3393 }
3394 if(ib > 0)
3395 xdraws(buf, base, ox, y, ic, ib);
3396 }
3397 xdrawcursor();
3398 }
3399
3400 void
3401 expose(XEvent *ev) {
3402 XExposeEvent *e = &ev->xexpose;
3403
3404 if(xw.state & WIN_REDRAW) {
3405 if(!e->count)
3406 xw.state &= ~WIN_REDRAW;
3407 }
3408 redraw(0);
3409 }
3410
3411 void
3412 visibility(XEvent *ev) {
3413 XVisibilityEvent *e = &ev->xvisibility;
3414
3415 if(e->state == VisibilityFullyObscured) {
3416 xw.state &= ~WIN_VISIBLE;
3417 } else if(!(xw.state & WIN_VISIBLE)) {
3418 /* need a full redraw for next Expose, not just a buf copy */
3419 xw.state |= WIN_VISIBLE | WIN_REDRAW;
3420 }
3421 }
3422
3423 void
3424 unmap(XEvent *ev) {
3425 xw.state &= ~WIN_VISIBLE;
3426 }
3427
3428 void
3429 xsetpointermotion(int set) {
3430 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
3431 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
3432 }
3433
3434 void
3435 xseturgency(int add) {
3436 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3437
3438 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
3439 XSetWMHints(xw.dpy, xw.win, h);
3440 XFree(h);
3441 }
3442
3443 void
3444 focus(XEvent *ev) {
3445 XFocusChangeEvent *e = &ev->xfocus;
3446
3447 if(e->mode == NotifyGrab)
3448 return;
3449
3450 if(ev->type == FocusIn) {
3451 XSetICFocus(xw.xic);
3452 xw.state |= WIN_FOCUSED;
3453 xseturgency(0);
3454 if(IS_SET(MODE_FOCUS))
3455 ttywrite("\033[I", 3);
3456 } else {
3457 XUnsetICFocus(xw.xic);
3458 xw.state &= ~WIN_FOCUSED;
3459 if(IS_SET(MODE_FOCUS))
3460 ttywrite("\033[O", 3);
3461 }
3462 }
3463
3464 static inline bool
3465 match(uint mask, uint state) {
3466 state &= ~ignoremod;
3467
3468 if(mask == XK_NO_MOD && state)
3469 return false;
3470 if(mask != XK_ANY_MOD && mask != XK_NO_MOD && !state)
3471 return false;
3472 if(mask == XK_ANY_MOD)
3473 return true;
3474 return state == mask;
3475 }
3476
3477 void
3478 numlock(const Arg *dummy) {
3479 term.numlock ^= 1;
3480 }
3481
3482 char*
3483 kmap(KeySym k, uint state) {
3484 Key *kp;
3485 int i;
3486
3487 /* Check for mapped keys out of X11 function keys. */
3488 for(i = 0; i < LEN(mappedkeys); i++) {
3489 if(mappedkeys[i] == k)
3490 break;
3491 }
3492 if(i == LEN(mappedkeys)) {
3493 if((k & 0xFFFF) < 0xFD00)
3494 return NULL;
3495 }
3496
3497 for(kp = key; kp < key + LEN(key); kp++) {
3498 if(kp->k != k)
3499 continue;
3500
3501 if(!match(kp->mask, state))
3502 continue;
3503
3504 if(kp->appkey > 0) {
3505 if(!IS_SET(MODE_APPKEYPAD))
3506 continue;
3507 if(term.numlock && kp->appkey == 2)
3508 continue;
3509 } else if(kp->appkey < 0 && IS_SET(MODE_APPKEYPAD)) {
3510 continue;
3511 }
3512
3513 if((kp->appcursor < 0 && IS_SET(MODE_APPCURSOR)) ||
3514 (kp->appcursor > 0
3515 && !IS_SET(MODE_APPCURSOR))) {
3516 continue;
3517 }
3518
3519 if((kp->crlf < 0 && IS_SET(MODE_CRLF)) ||
3520 (kp->crlf > 0 && !IS_SET(MODE_CRLF))) {
3521 continue;
3522 }
3523
3524 return kp->s;
3525 }
3526
3527 return NULL;
3528 }
3529
3530 void
3531 kpress(XEvent *ev) {
3532 XKeyEvent *e = &ev->xkey;
3533 KeySym ksym;
3534 char xstr[31], buf[32], *customkey, *cp = buf;
3535 int len, ret;
3536 long c;
3537 Status status;
3538 Shortcut *bp;
3539
3540 if(IS_SET(MODE_KBDLOCK))
3541 return;
3542
3543 len = XmbLookupString(xw.xic, e, xstr, sizeof(xstr), &ksym, &status);
3544 e->state &= ~Mod2Mask;
3545 /* 1. shortcuts */
3546 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3547 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3548 bp->func(&(bp->arg));
3549 return;
3550 }
3551 }
3552
3553 /* 2. custom keys from config.h */
3554 if((customkey = kmap(ksym, e->state))) {
3555 len = strlen(customkey);
3556 memcpy(buf, customkey, len);
3557 /* 3. hardcoded (overrides X lookup) */
3558 } else {
3559 if(len == 0)
3560 return;
3561
3562 if(len == 1 && e->state & Mod1Mask) {
3563 if(IS_SET(MODE_8BIT)) {
3564 if(*xstr < 0177) {
3565 c = *xstr | 0x80;
3566 ret = utf8encode(&c, cp);
3567 cp += ret;
3568 len = 0;
3569 }
3570 } else {
3571 *cp++ = '\033';
3572 }
3573 }
3574
3575 memcpy(cp, xstr, len);
3576 len = cp - buf + len;
3577 }
3578
3579 ttywrite(buf, len);
3580 if(IS_SET(MODE_ECHO))
3581 techo(buf, len);
3582 }
3583
3584
3585 void
3586 cmessage(XEvent *e) {
3587 /*
3588 * See xembed specs
3589 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3590 */
3591 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3592 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3593 xw.state |= WIN_FOCUSED;
3594 xseturgency(0);
3595 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3596 xw.state &= ~WIN_FOCUSED;
3597 }
3598 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3599 /* Send SIGHUP to shell */
3600 kill(pid, SIGHUP);
3601 exit(EXIT_SUCCESS);
3602 }
3603 }
3604
3605 void
3606 cresize(int width, int height) {
3607 int col, row;
3608
3609 if(width != 0)
3610 xw.w = width;
3611 if(height != 0)
3612 xw.h = height;
3613
3614 col = (xw.w - 2 * borderpx) / xw.cw;
3615 row = (xw.h - 2 * borderpx) / xw.ch;
3616
3617 tresize(col, row);
3618 xresize(col, row);
3619 ttyresize();
3620 }
3621
3622 void
3623 resize(XEvent *e) {
3624 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3625 return;
3626
3627 cresize(e->xconfigure.width, e->xconfigure.height);
3628 }
3629
3630 void
3631 run(void) {
3632 XEvent ev;
3633 int w = xw.w, h = xw.h;
3634 fd_set rfd;
3635 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
3636 struct timeval drawtimeout, *tv = NULL, now, last, lastblink;
3637
3638 /* Waiting for window mapping */
3639 while(1) {
3640 XNextEvent(xw.dpy, &ev);
3641 if(ev.type == ConfigureNotify) {
3642 w = ev.xconfigure.width;
3643 h = ev.xconfigure.height;
3644 } else if(ev.type == MapNotify) {
3645 break;
3646 }
3647 }
3648
3649 if(!xw.isfixed)
3650 cresize(w, h);
3651 else
3652 cresize(xw.fw, xw.fh);
3653 ttynew();
3654
3655 gettimeofday(&lastblink, NULL);
3656 gettimeofday(&last, NULL);
3657
3658 for(xev = actionfps;;) {
3659 FD_ZERO(&rfd);
3660 FD_SET(cmdfd, &rfd);
3661 FD_SET(xfd, &rfd);
3662
3663 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
3664 if(errno == EINTR)
3665 continue;
3666 die("select failed: %s\n", SERRNO);
3667 }
3668 if(FD_ISSET(cmdfd, &rfd)) {
3669 ttyread();
3670 if(blinktimeout) {
3671 blinkset = tattrset(ATTR_BLINK);
3672 if(!blinkset)
3673 MODBIT(term.mode, 0, MODE_BLINK);
3674 }
3675 }
3676
3677 if(FD_ISSET(xfd, &rfd))
3678 xev = actionfps;
3679
3680 gettimeofday(&now, NULL);
3681 drawtimeout.tv_sec = 0;
3682 drawtimeout.tv_usec = (1000/xfps) * 1000;
3683 tv = &drawtimeout;
3684
3685 dodraw = 0;
3686 if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
3687 tsetdirtattr(ATTR_BLINK);
3688 term.mode ^= MODE_BLINK;
3689 gettimeofday(&lastblink, NULL);
3690 dodraw = 1;
3691 }
3692 if(TIMEDIFF(now, last) \
3693 > (xev? (1000/xfps) : (1000/actionfps))) {
3694 dodraw = 1;
3695 last = now;
3696 }
3697
3698 if(dodraw) {
3699 while(XPending(xw.dpy)) {
3700 XNextEvent(xw.dpy, &ev);
3701 if(XFilterEvent(&ev, None))
3702 continue;
3703 if(handler[ev.type])
3704 (handler[ev.type])(&ev);
3705 }
3706
3707 draw();
3708 XFlush(xw.dpy);
3709
3710 if(xev && !FD_ISSET(xfd, &rfd))
3711 xev--;
3712 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
3713 if(blinkset) {
3714 if(TIMEDIFF(now, lastblink) \
3715 > blinktimeout) {
3716 drawtimeout.tv_usec = 1;
3717 } else {
3718 drawtimeout.tv_usec = (1000 * \
3719 (blinktimeout - \
3720 TIMEDIFF(now,
3721 lastblink)));
3722 }
3723 } else {
3724 tv = NULL;
3725 }
3726 }
3727 }
3728 }
3729 }
3730
3731 void
3732 usage(void) {
3733 die("%s " VERSION " (c) 2010-2013 st engineers\n" \
3734 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
3735 " [-t title] [-w windowid] [-e command ...]\n", argv0);
3736 }
3737
3738 int
3739 main(int argc, char *argv[]) {
3740 int bitm, xr, yr;
3741 uint wr, hr;
3742 char *titles;
3743
3744 xw.fw = xw.fh = xw.fx = xw.fy = 0;
3745 xw.isfixed = False;
3746
3747 ARGBEGIN {
3748 case 'a':
3749 allowaltscreen = false;
3750 break;
3751 case 'c':
3752 opt_class = EARGF(usage());
3753 break;
3754 case 'e':
3755 /* eat all remaining arguments */
3756 if(argc > 1) {
3757 opt_cmd = &argv[1];
3758 if(argv[1] != NULL && opt_title == NULL) {
3759 titles = strdup(argv[1]);
3760 opt_title = basename(titles);
3761 }
3762 }
3763 goto run;
3764 case 'f':
3765 opt_font = EARGF(usage());
3766 break;
3767 case 'g':
3768 bitm = XParseGeometry(EARGF(usage()), &xr, &yr, &wr, &hr);
3769 if(bitm & XValue)
3770 xw.fx = xr;
3771 if(bitm & YValue)
3772 xw.fy = yr;
3773 if(bitm & WidthValue)
3774 xw.fw = (int)wr;
3775 if(bitm & HeightValue)
3776 xw.fh = (int)hr;
3777 if(bitm & XNegative && xw.fx == 0)
3778 xw.fx = -1;
3779 if(bitm & YNegative && xw.fy == 0)
3780 xw.fy = -1;
3781
3782 if(xw.fh != 0 && xw.fw != 0)
3783 xw.isfixed = True;
3784 break;
3785 case 'o':
3786 opt_io = EARGF(usage());
3787 break;
3788 case 't':
3789 opt_title = EARGF(usage());
3790 break;
3791 case 'w':
3792 opt_embed = EARGF(usage());
3793 break;
3794 case 'v':
3795 default:
3796 usage();
3797 } ARGEND;
3798
3799 run:
3800 setlocale(LC_CTYPE, "");
3801 XSetLocaleModifiers("");
3802 tnew(80, 24);
3803 xinit();
3804 selinit();
3805 run();
3806
3807 return 0;
3808 }
3809