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Changing the license to MIT/X.
[st.git] / st.c
1 /* See LICENSE for licence details. */
2 #define _XOPEN_SOURCE 600
3 #include <ctype.h>
4 #include <errno.h>
5 #include <fcntl.h>
6 #include <limits.h>
7 #include <locale.h>
8 #include <pwd.h>
9 #include <stdarg.h>
10 #include <stdbool.h>
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <signal.h>
15 #include <sys/ioctl.h>
16 #include <sys/select.h>
17 #include <sys/stat.h>
18 #include <sys/time.h>
19 #include <sys/types.h>
20 #include <sys/wait.h>
21 #include <time.h>
22 #include <unistd.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/extensions/Xdbe.h>
29 #include <X11/Xft/Xft.h>
30 #include <fontconfig/fontconfig.h>
31 #define Glyph Glyph_
32 #define Font Font_
33
34 #if defined(__linux)
35 #include <pty.h>
36 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
37 #include <util.h>
38 #elif defined(__FreeBSD__) || defined(__DragonFly__)
39 #include <libutil.h>
40 #endif
41
42 #define USAGE \
43 "st " VERSION " (c) 2010-2012 st engineers\n" \
44 "usage: st [-v] [-c class] [-f font] [-g geometry] [-o file]" \
45 " [-t title] [-w windowid] [-e command ...]\n"
46
47 /* XEMBED messages */
48 #define XEMBED_FOCUS_IN 4
49 #define XEMBED_FOCUS_OUT 5
50
51 /* Arbitrary sizes */
52 #define ESC_BUF_SIZ 256
53 #define ESC_ARG_SIZ 16
54 #define STR_BUF_SIZ 256
55 #define STR_ARG_SIZ 16
56 #define DRAW_BUF_SIZ 20*1024
57 #define UTF_SIZ 4
58 #define XK_NO_MOD UINT_MAX
59 #define XK_ANY_MOD 0
60
61 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
62
63 /* macros */
64 #define CLEANMASK(mask) (mask & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
65 #define SERRNO strerror(errno)
66 #define MIN(a, b) ((a) < (b) ? (a) : (b))
67 #define MAX(a, b) ((a) < (b) ? (b) : (a))
68 #define LEN(a) (sizeof(a) / sizeof(a[0]))
69 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
70 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
71 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
72 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
73 #define IS_SET(flag) (term.mode & (flag))
74 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
75
76 #define VT102ID "\033[?6c"
77
78 enum glyph_attribute {
79 ATTR_NULL = 0,
80 ATTR_REVERSE = 1,
81 ATTR_UNDERLINE = 2,
82 ATTR_BOLD = 4,
83 ATTR_GFX = 8,
84 ATTR_ITALIC = 16,
85 ATTR_BLINK = 32,
86 };
87
88 enum cursor_movement {
89 CURSOR_UP,
90 CURSOR_DOWN,
91 CURSOR_LEFT,
92 CURSOR_RIGHT,
93 CURSOR_SAVE,
94 CURSOR_LOAD
95 };
96
97 enum cursor_state {
98 CURSOR_DEFAULT = 0,
99 CURSOR_HIDE = 1,
100 CURSOR_WRAPNEXT = 2
101 };
102
103 enum glyph_state {
104 GLYPH_SET = 1,
105 GLYPH_DIRTY = 2
106 };
107
108 enum term_mode {
109 MODE_WRAP = 1,
110 MODE_INSERT = 2,
111 MODE_APPKEYPAD = 4,
112 MODE_ALTSCREEN = 8,
113 MODE_CRLF = 16,
114 MODE_MOUSEBTN = 32,
115 MODE_MOUSEMOTION = 64,
116 MODE_MOUSE = 32|64,
117 MODE_REVERSE = 128,
118 MODE_KBDLOCK = 256
119 };
120
121 enum escape_state {
122 ESC_START = 1,
123 ESC_CSI = 2,
124 ESC_STR = 4, /* DSC, OSC, PM, APC */
125 ESC_ALTCHARSET = 8,
126 ESC_STR_END = 16, /* a final string was encountered */
127 ESC_TEST = 32, /* Enter in test mode */
128 };
129
130 enum window_state {
131 WIN_VISIBLE = 1,
132 WIN_REDRAW = 2,
133 WIN_FOCUSED = 4
134 };
135
136 /* bit macro */
137 #undef B0
138 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
139
140 typedef unsigned char uchar;
141 typedef unsigned int uint;
142 typedef unsigned long ulong;
143 typedef unsigned short ushort;
144
145 typedef struct {
146 char c[UTF_SIZ]; /* character code */
147 uchar mode; /* attribute flags */
148 ushort fg; /* foreground */
149 ushort bg; /* background */
150 uchar state; /* state flags */
151 } Glyph;
152
153 typedef Glyph* Line;
154
155 typedef struct {
156 Glyph attr; /* current char attributes */
157 int x;
158 int y;
159 char state;
160 } TCursor;
161
162 /* CSI Escape sequence structs */
163 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
164 typedef struct {
165 char buf[ESC_BUF_SIZ]; /* raw string */
166 int len; /* raw string length */
167 char priv;
168 int arg[ESC_ARG_SIZ];
169 int narg; /* nb of args */
170 char mode;
171 } CSIEscape;
172
173 /* STR Escape sequence structs */
174 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
175 typedef struct {
176 char type; /* ESC type ... */
177 char buf[STR_BUF_SIZ]; /* raw string */
178 int len; /* raw string length */
179 char *args[STR_ARG_SIZ];
180 int narg; /* nb of args */
181 } STREscape;
182
183 /* Internal representation of the screen */
184 typedef struct {
185 int row; /* nb row */
186 int col; /* nb col */
187 Line *line; /* screen */
188 Line *alt; /* alternate screen */
189 bool *dirty; /* dirtyness of lines */
190 TCursor c; /* cursor */
191 int top; /* top scroll limit */
192 int bot; /* bottom scroll limit */
193 int mode; /* terminal mode flags */
194 int esc; /* escape state flags */
195 bool *tabs;
196 } Term;
197
198 /* Purely graphic info */
199 typedef struct {
200 Display* dpy;
201 Colormap cmap;
202 Window win;
203 XdbeBackBuffer buf;
204 Atom xembed, wmdeletewin;
205 XIM xim;
206 XIC xic;
207 XftDraw *xft_draw;
208 Visual *vis;
209 int scr;
210 bool isfixed; /* is fixed geometry? */
211 int fx, fy, fw, fh; /* fixed geometry */
212 int tw, th; /* tty width and height */
213 int w; /* window width */
214 int h; /* window height */
215 int ch; /* char height */
216 int cw; /* char width */
217 char state; /* focus, redraw, visible */
218 } XWindow;
219
220 typedef struct {
221 KeySym k;
222 uint mask;
223 char s[ESC_BUF_SIZ];
224 } Key;
225
226 /* TODO: use better name for vars... */
227 typedef struct {
228 int mode;
229 int bx, by;
230 int ex, ey;
231 struct {
232 int x, y;
233 } b, e;
234 char *clip;
235 Atom xtarget;
236 bool alt;
237 struct timeval tclick1;
238 struct timeval tclick2;
239 } Selection;
240
241 typedef union {
242 int i;
243 unsigned int ui;
244 float f;
245 const void *v;
246 } Arg;
247
248 typedef struct {
249 unsigned int mod;
250 KeySym keysym;
251 void (*func)(const Arg *);
252 const Arg arg;
253 } Shortcut;
254
255 /* function definitions used in config.h */
256 static void xzoom(const Arg *);
257
258 /* Config.h for applying patches and the configuration. */
259 #include "config.h"
260
261 /* Font structure */
262 typedef struct {
263 int height;
264 int width;
265 int ascent;
266 int descent;
267 short lbearing;
268 short rbearing;
269 XftFont *xft_set;
270 } Font;
271
272 /* Drawing Context */
273 typedef struct {
274 XftColor xft_col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
275 GC gc;
276 Font font, bfont, ifont, ibfont;
277 } DC;
278
279 static void die(const char *, ...);
280 static void draw(void);
281 static void redraw(void);
282 static void drawregion(int, int, int, int);
283 static void execsh(void);
284 static void sigchld(int);
285 static void run(void);
286
287 static void csidump(void);
288 static void csihandle(void);
289 static void csiparse(void);
290 static void csireset(void);
291 static void strdump(void);
292 static void strhandle(void);
293 static void strparse(void);
294 static void strreset(void);
295
296 static void tclearregion(int, int, int, int);
297 static void tcursor(int);
298 static void tdeletechar(int);
299 static void tdeleteline(int);
300 static void tinsertblank(int);
301 static void tinsertblankline(int);
302 static void tmoveto(int, int);
303 static void tnew(int, int);
304 static void tnewline(int);
305 static void tputtab(bool);
306 static void tputc(char *, int);
307 static void treset(void);
308 static int tresize(int, int);
309 static void tscrollup(int, int);
310 static void tscrolldown(int, int);
311 static void tsetattr(int*, int);
312 static void tsetchar(char *, Glyph *, int, int);
313 static void tsetscroll(int, int);
314 static void tswapscreen(void);
315 static void tsetdirt(int, int);
316 static void tsetmode(bool, bool, int *, int);
317 static void tfulldirt(void);
318
319 static void ttynew(void);
320 static void ttyread(void);
321 static void ttyresize(void);
322 static void ttywrite(const char *, size_t);
323
324 static void xdraws(char *, Glyph, int, int, int, int);
325 static void xhints(void);
326 static void xclear(int, int, int, int);
327 static void xdrawcursor(void);
328 static void xinit(void);
329 static void xloadcols(void);
330 static void xresettitle(void);
331 static void xseturgency(int);
332 static void xsetsel(char*);
333 static void xtermclear(int, int, int, int);
334 static void xresize(int, int);
335
336 static void expose(XEvent *);
337 static void visibility(XEvent *);
338 static void unmap(XEvent *);
339 static char *kmap(KeySym, uint);
340 static void kpress(XEvent *);
341 static void cmessage(XEvent *);
342 static void cresize(int width, int height);
343 static void resize(XEvent *);
344 static void focus(XEvent *);
345 static void brelease(XEvent *);
346 static void bpress(XEvent *);
347 static void bmotion(XEvent *);
348 static void selnotify(XEvent *);
349 static void selclear(XEvent *);
350 static void selrequest(XEvent *);
351
352 static void selinit(void);
353 static inline bool selected(int, int);
354 static void selcopy(void);
355 static void selpaste(void);
356 static void selscroll(int, int);
357
358 static int utf8decode(char *, long *);
359 static int utf8encode(long *, char *);
360 static int utf8size(char *);
361 static int isfullutf8(char *, int);
362
363 static ssize_t xwrite(int, char *, size_t);
364 static void *xmalloc(size_t);
365 static void *xrealloc(void *, size_t);
366 static void *xcalloc(size_t nmemb, size_t size);
367
368 static void (*handler[LASTEvent])(XEvent *) = {
369 [KeyPress] = kpress,
370 [ClientMessage] = cmessage,
371 [ConfigureNotify] = resize,
372 [VisibilityNotify] = visibility,
373 [UnmapNotify] = unmap,
374 [Expose] = expose,
375 [FocusIn] = focus,
376 [FocusOut] = focus,
377 [MotionNotify] = bmotion,
378 [ButtonPress] = bpress,
379 [ButtonRelease] = brelease,
380 [SelectionClear] = selclear,
381 [SelectionNotify] = selnotify,
382 [SelectionRequest] = selrequest,
383 };
384
385 /* Globals */
386 static DC dc;
387 static XWindow xw;
388 static Term term;
389 static CSIEscape csiescseq;
390 static STREscape strescseq;
391 static int cmdfd;
392 static pid_t pid;
393 static Selection sel;
394 static int iofd = -1;
395 static char **opt_cmd = NULL;
396 static char *opt_io = NULL;
397 static char *opt_title = NULL;
398 static char *opt_embed = NULL;
399 static char *opt_class = NULL;
400 static char *opt_font = NULL;
401
402 static char *usedfont = NULL;
403 static int usedfontsize = 0;
404
405 ssize_t
406 xwrite(int fd, char *s, size_t len) {
407 size_t aux = len;
408
409 while(len > 0) {
410 ssize_t r = write(fd, s, len);
411 if(r < 0)
412 return r;
413 len -= r;
414 s += r;
415 }
416 return aux;
417 }
418
419 void *
420 xmalloc(size_t len) {
421 void *p = malloc(len);
422
423 if(!p)
424 die("Out of memory\n");
425
426 return p;
427 }
428
429 void *
430 xrealloc(void *p, size_t len) {
431 if((p = realloc(p, len)) == NULL)
432 die("Out of memory\n");
433
434 return p;
435 }
436
437 void *
438 xcalloc(size_t nmemb, size_t size) {
439 void *p = calloc(nmemb, size);
440
441 if(!p)
442 die("Out of memory\n");
443
444 return p;
445 }
446
447 int
448 utf8decode(char *s, long *u) {
449 uchar c;
450 int i, n, rtn;
451
452 rtn = 1;
453 c = *s;
454 if(~c & B7) { /* 0xxxxxxx */
455 *u = c;
456 return rtn;
457 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
458 *u = c&(B4|B3|B2|B1|B0);
459 n = 1;
460 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
461 *u = c&(B3|B2|B1|B0);
462 n = 2;
463 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
464 *u = c & (B2|B1|B0);
465 n = 3;
466 } else {
467 goto invalid;
468 }
469
470 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
471 c = *s;
472 if((c & (B7|B6)) != B7) /* 10xxxxxx */
473 goto invalid;
474 *u <<= 6;
475 *u |= c & (B5|B4|B3|B2|B1|B0);
476 }
477
478 if((n == 1 && *u < 0x80) ||
479 (n == 2 && *u < 0x800) ||
480 (n == 3 && *u < 0x10000) ||
481 (*u >= 0xD800 && *u <= 0xDFFF)) {
482 goto invalid;
483 }
484
485 return rtn;
486 invalid:
487 *u = 0xFFFD;
488
489 return rtn;
490 }
491
492 int
493 utf8encode(long *u, char *s) {
494 uchar *sp;
495 ulong uc;
496 int i, n;
497
498 sp = (uchar *)s;
499 uc = *u;
500 if(uc < 0x80) {
501 *sp = uc; /* 0xxxxxxx */
502 return 1;
503 } else if(*u < 0x800) {
504 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
505 n = 1;
506 } else if(uc < 0x10000) {
507 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
508 n = 2;
509 } else if(uc <= 0x10FFFF) {
510 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
511 n = 3;
512 } else {
513 goto invalid;
514 }
515
516 for(i=n,++sp; i>0; --i,++sp)
517 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
518
519 return n+1;
520 invalid:
521 /* U+FFFD */
522 *s++ = '\xEF';
523 *s++ = '\xBF';
524 *s = '\xBD';
525
526 return 3;
527 }
528
529 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
530 UTF-8 otherwise return 0 */
531 int
532 isfullutf8(char *s, int b) {
533 uchar *c1, *c2, *c3;
534
535 c1 = (uchar *)s;
536 c2 = (uchar *)++s;
537 c3 = (uchar *)++s;
538 if(b < 1) {
539 return 0;
540 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
541 return 0;
542 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
543 ((b == 1) ||
544 ((b == 2) && (*c2&(B7|B6)) == B7))) {
545 return 0;
546 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
547 ((b == 1) ||
548 ((b == 2) && (*c2&(B7|B6)) == B7) ||
549 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
550 return 0;
551 } else {
552 return 1;
553 }
554 }
555
556 int
557 utf8size(char *s) {
558 uchar c = *s;
559
560 if(~c&B7) {
561 return 1;
562 } else if((c&(B7|B6|B5)) == (B7|B6)) {
563 return 2;
564 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
565 return 3;
566 } else {
567 return 4;
568 }
569 }
570
571 void
572 selinit(void) {
573 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
574 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
575 sel.mode = 0;
576 sel.bx = -1;
577 sel.clip = NULL;
578 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
579 if(sel.xtarget == None)
580 sel.xtarget = XA_STRING;
581 }
582
583 static int
584 x2col(int x) {
585 x -= borderpx;
586 x /= xw.cw;
587
588 return LIMIT(x, 0, term.col-1);
589 }
590
591 static int
592 y2row(int y) {
593 y -= borderpx;
594 y /= xw.ch;
595
596 return LIMIT(y, 0, term.row-1);
597 }
598
599 static inline bool
600 selected(int x, int y) {
601 int bx, ex;
602
603 if(sel.ey == y && sel.by == y) {
604 bx = MIN(sel.bx, sel.ex);
605 ex = MAX(sel.bx, sel.ex);
606 return BETWEEN(x, bx, ex);
607 }
608
609 return ((sel.b.y < y && y < sel.e.y)
610 || (y == sel.e.y && x <= sel.e.x))
611 || (y == sel.b.y && x >= sel.b.x
612 && (x <= sel.e.x || sel.b.y != sel.e.y));
613 }
614
615 void
616 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
617 if(b)
618 *b = e->xbutton.button;
619
620 *x = x2col(e->xbutton.x);
621 *y = y2row(e->xbutton.y);
622
623 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
624 sel.b.y = MIN(sel.by, sel.ey);
625 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
626 sel.e.y = MAX(sel.by, sel.ey);
627 }
628
629 void
630 mousereport(XEvent *e) {
631 int x = x2col(e->xbutton.x);
632 int y = y2row(e->xbutton.y);
633 int button = e->xbutton.button;
634 int state = e->xbutton.state;
635 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
636 static int ob, ox, oy;
637
638 /* from urxvt */
639 if(e->xbutton.type == MotionNotify) {
640 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
641 return;
642 button = ob + 32;
643 ox = x, oy = y;
644 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
645 button = 3;
646 } else {
647 button -= Button1;
648 if(button >= 3)
649 button += 64 - 3;
650 if(e->xbutton.type == ButtonPress) {
651 ob = button;
652 ox = x, oy = y;
653 }
654 }
655
656 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
657 + (state & Mod4Mask ? 8 : 0)
658 + (state & ControlMask ? 16 : 0);
659
660 ttywrite(buf, sizeof(buf));
661 }
662
663 void
664 bpress(XEvent *e) {
665 if(IS_SET(MODE_MOUSE)) {
666 mousereport(e);
667 } else if(e->xbutton.button == Button1) {
668 if(sel.bx != -1) {
669 sel.bx = -1;
670 tsetdirt(sel.b.y, sel.e.y);
671 draw();
672 }
673 sel.mode = 1;
674 sel.ex = sel.bx = x2col(e->xbutton.x);
675 sel.ey = sel.by = y2row(e->xbutton.y);
676 }
677 }
678
679 void
680 selcopy(void) {
681 char *str, *ptr, *p;
682 int x, y, bufsize, is_selected = 0, size;
683 Glyph *gp, *last;
684
685 if(sel.bx == -1) {
686 str = NULL;
687 } else {
688 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
689 ptr = str = xmalloc(bufsize);
690
691 /* append every set & selected glyph to the selection */
692 for(y = 0; y < term.row; y++) {
693 gp = &term.line[y][0];
694 last = gp + term.col;
695
696 while(--last >= gp && !(last->state & GLYPH_SET))
697 /* nothing */;
698
699 for(x = 0; gp <= last; x++, ++gp) {
700 if(!(is_selected = selected(x, y)))
701 continue;
702
703 p = (gp->state & GLYPH_SET) ? gp->c : " ";
704 size = utf8size(p);
705 memcpy(ptr, p, size);
706 ptr += size;
707 }
708 /* \n at the end of every selected line except for the last one */
709 if(is_selected && y < sel.e.y)
710 *ptr++ = '\n';
711 }
712 *ptr = 0;
713 }
714 sel.alt = IS_SET(MODE_ALTSCREEN);
715 xsetsel(str);
716 }
717
718 void
719 selnotify(XEvent *e) {
720 ulong nitems, ofs, rem;
721 int format;
722 uchar *data;
723 Atom type;
724
725 ofs = 0;
726 do {
727 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
728 False, AnyPropertyType, &type, &format,
729 &nitems, &rem, &data)) {
730 fprintf(stderr, "Clipboard allocation failed\n");
731 return;
732 }
733 ttywrite((const char *) data, nitems * format / 8);
734 XFree(data);
735 /* number of 32-bit chunks returned */
736 ofs += nitems * format / 32;
737 } while(rem > 0);
738 }
739
740 void
741 selpaste(void) {
742 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
743 xw.win, CurrentTime);
744 }
745
746 void selclear(XEvent *e) {
747 if(sel.bx == -1)
748 return;
749 sel.bx = -1;
750 tsetdirt(sel.b.y, sel.e.y);
751 }
752
753 void
754 selrequest(XEvent *e) {
755 XSelectionRequestEvent *xsre;
756 XSelectionEvent xev;
757 Atom xa_targets, string;
758
759 xsre = (XSelectionRequestEvent *) e;
760 xev.type = SelectionNotify;
761 xev.requestor = xsre->requestor;
762 xev.selection = xsre->selection;
763 xev.target = xsre->target;
764 xev.time = xsre->time;
765 /* reject */
766 xev.property = None;
767
768 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
769 if(xsre->target == xa_targets) {
770 /* respond with the supported type */
771 string = sel.xtarget;
772 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
773 XA_ATOM, 32, PropModeReplace,
774 (uchar *) &string, 1);
775 xev.property = xsre->property;
776 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
777 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
778 xsre->target, 8, PropModeReplace,
779 (uchar *) sel.clip, strlen(sel.clip));
780 xev.property = xsre->property;
781 }
782
783 /* all done, send a notification to the listener */
784 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
785 fprintf(stderr, "Error sending SelectionNotify event\n");
786 }
787
788 void
789 xsetsel(char *str) {
790 /* register the selection for both the clipboard and the primary */
791 Atom clipboard;
792
793 free(sel.clip);
794 sel.clip = str;
795
796 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
797
798 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
799 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
800 }
801
802 void
803 brelease(XEvent *e) {
804 struct timeval now;
805
806 if(IS_SET(MODE_MOUSE)) {
807 mousereport(e);
808 return;
809 }
810
811 if(e->xbutton.button == Button2) {
812 selpaste();
813 } else if(e->xbutton.button == Button1) {
814 sel.mode = 0;
815 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
816 term.dirty[sel.ey] = 1;
817 if(sel.bx == sel.ex && sel.by == sel.ey) {
818 sel.bx = -1;
819 gettimeofday(&now, NULL);
820
821 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
822 /* triple click on the line */
823 sel.b.x = sel.bx = 0;
824 sel.e.x = sel.ex = term.col;
825 sel.b.y = sel.e.y = sel.ey;
826 selcopy();
827 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
828 /* double click to select word */
829 sel.bx = sel.ex;
830 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
831 term.line[sel.ey][sel.bx-1].c[0] != ' ') {
832 sel.bx--;
833 }
834 sel.b.x = sel.bx;
835 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
836 term.line[sel.ey][sel.ex+1].c[0] != ' ') {
837 sel.ex++;
838 }
839 sel.e.x = sel.ex;
840 sel.b.y = sel.e.y = sel.ey;
841 selcopy();
842 }
843 } else {
844 selcopy();
845 }
846 }
847
848 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
849 gettimeofday(&sel.tclick1, NULL);
850 }
851
852 void
853 bmotion(XEvent *e) {
854 int starty, endy, oldey, oldex;
855
856 if(IS_SET(MODE_MOUSE)) {
857 mousereport(e);
858 return;
859 }
860
861 if(sel.mode) {
862 oldey = sel.ey;
863 oldex = sel.ex;
864 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
865
866 if(oldey != sel.ey || oldex != sel.ex) {
867 starty = MIN(oldey, sel.ey);
868 endy = MAX(oldey, sel.ey);
869 tsetdirt(starty, endy);
870 }
871 }
872 }
873
874 void
875 die(const char *errstr, ...) {
876 va_list ap;
877
878 va_start(ap, errstr);
879 vfprintf(stderr, errstr, ap);
880 va_end(ap);
881 exit(EXIT_FAILURE);
882 }
883
884 void
885 execsh(void) {
886 char **args;
887 char *envshell = getenv("SHELL");
888 const struct passwd *pass = getpwuid(getuid());
889 char buf[sizeof(long) * 8 + 1];
890
891 unsetenv("COLUMNS");
892 unsetenv("LINES");
893 unsetenv("TERMCAP");
894
895 if(pass) {
896 setenv("LOGNAME", pass->pw_name, 1);
897 setenv("USER", pass->pw_name, 1);
898 setenv("SHELL", pass->pw_shell, 0);
899 setenv("HOME", pass->pw_dir, 0);
900 }
901
902 snprintf(buf, sizeof(buf), "%lu", xw.win);
903 setenv("WINDOWID", buf, 1);
904
905 signal(SIGCHLD, SIG_DFL);
906 signal(SIGHUP, SIG_DFL);
907 signal(SIGINT, SIG_DFL);
908 signal(SIGQUIT, SIG_DFL);
909 signal(SIGTERM, SIG_DFL);
910 signal(SIGALRM, SIG_DFL);
911
912 DEFAULT(envshell, shell);
913 setenv("TERM", termname, 1);
914 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
915 execvp(args[0], args);
916 exit(EXIT_FAILURE);
917 }
918
919 void
920 sigchld(int a) {
921 int stat = 0;
922
923 if(waitpid(pid, &stat, 0) < 0)
924 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
925
926 if(WIFEXITED(stat)) {
927 exit(WEXITSTATUS(stat));
928 } else {
929 exit(EXIT_FAILURE);
930 }
931 }
932
933 void
934 ttynew(void) {
935 int m, s;
936 struct winsize w = {term.row, term.col, 0, 0};
937
938 /* seems to work fine on linux, openbsd and freebsd */
939 if(openpty(&m, &s, NULL, NULL, &w) < 0)
940 die("openpty failed: %s\n", SERRNO);
941
942 switch(pid = fork()) {
943 case -1:
944 die("fork failed\n");
945 break;
946 case 0:
947 setsid(); /* create a new process group */
948 dup2(s, STDIN_FILENO);
949 dup2(s, STDOUT_FILENO);
950 dup2(s, STDERR_FILENO);
951 if(ioctl(s, TIOCSCTTY, NULL) < 0)
952 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
953 close(s);
954 close(m);
955 execsh();
956 break;
957 default:
958 close(s);
959 cmdfd = m;
960 signal(SIGCHLD, sigchld);
961 if(opt_io) {
962 iofd = (!strcmp(opt_io, "-")) ?
963 STDOUT_FILENO :
964 open(opt_io, O_WRONLY | O_CREAT, 0666);
965 if(iofd < 0) {
966 fprintf(stderr, "Error opening %s:%s\n",
967 opt_io, strerror(errno));
968 }
969 }
970 }
971 }
972
973 void
974 dump(char c) {
975 static int col;
976
977 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
978 if(++col % 10 == 0)
979 fprintf(stderr, "\n");
980 }
981
982 void
983 ttyread(void) {
984 static char buf[BUFSIZ];
985 static int buflen = 0;
986 char *ptr;
987 char s[UTF_SIZ];
988 int charsize; /* size of utf8 char in bytes */
989 long utf8c;
990 int ret;
991
992 /* append read bytes to unprocessed bytes */
993 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
994 die("Couldn't read from shell: %s\n", SERRNO);
995
996 /* process every complete utf8 char */
997 buflen += ret;
998 ptr = buf;
999 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1000 charsize = utf8decode(ptr, &utf8c);
1001 utf8encode(&utf8c, s);
1002 tputc(s, charsize);
1003 ptr += charsize;
1004 buflen -= charsize;
1005 }
1006
1007 /* keep any uncomplete utf8 char for the next call */
1008 memmove(buf, ptr, buflen);
1009 }
1010
1011 void
1012 ttywrite(const char *s, size_t n) {
1013 if(write(cmdfd, s, n) == -1)
1014 die("write error on tty: %s\n", SERRNO);
1015 }
1016
1017 void
1018 ttyresize(void) {
1019 struct winsize w;
1020
1021 w.ws_row = term.row;
1022 w.ws_col = term.col;
1023 w.ws_xpixel = xw.tw;
1024 w.ws_ypixel = xw.th;
1025 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1026 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1027 }
1028
1029 void
1030 tsetdirt(int top, int bot) {
1031 int i;
1032
1033 LIMIT(top, 0, term.row-1);
1034 LIMIT(bot, 0, term.row-1);
1035
1036 for(i = top; i <= bot; i++)
1037 term.dirty[i] = 1;
1038 }
1039
1040 void
1041 tfulldirt(void) {
1042 tsetdirt(0, term.row-1);
1043 }
1044
1045 void
1046 tcursor(int mode) {
1047 static TCursor c;
1048
1049 if(mode == CURSOR_SAVE) {
1050 c = term.c;
1051 } else if(mode == CURSOR_LOAD) {
1052 term.c = c;
1053 tmoveto(c.x, c.y);
1054 }
1055 }
1056
1057 void
1058 treset(void) {
1059 uint i;
1060
1061 term.c = (TCursor){{
1062 .mode = ATTR_NULL,
1063 .fg = defaultfg,
1064 .bg = defaultbg
1065 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1066
1067 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1068 for(i = tabspaces; i < term.col; i += tabspaces)
1069 term.tabs[i] = 1;
1070 term.top = 0;
1071 term.bot = term.row - 1;
1072 term.mode = MODE_WRAP;
1073
1074 tclearregion(0, 0, term.col-1, term.row-1);
1075 }
1076
1077 void
1078 tnew(int col, int row) {
1079 /* set screen size */
1080 term.row = row;
1081 term.col = col;
1082 term.line = xmalloc(term.row * sizeof(Line));
1083 term.alt = xmalloc(term.row * sizeof(Line));
1084 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
1085 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
1086
1087 for(row = 0; row < term.row; row++) {
1088 term.line[row] = xmalloc(term.col * sizeof(Glyph));
1089 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
1090 term.dirty[row] = 0;
1091 }
1092 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1093 /* setup screen */
1094 treset();
1095 }
1096
1097 void
1098 tswapscreen(void) {
1099 Line *tmp = term.line;
1100
1101 term.line = term.alt;
1102 term.alt = tmp;
1103 term.mode ^= MODE_ALTSCREEN;
1104 tfulldirt();
1105 }
1106
1107 void
1108 tscrolldown(int orig, int n) {
1109 int i;
1110 Line temp;
1111
1112 LIMIT(n, 0, term.bot-orig+1);
1113
1114 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1115
1116 for(i = term.bot; i >= orig+n; i--) {
1117 temp = term.line[i];
1118 term.line[i] = term.line[i-n];
1119 term.line[i-n] = temp;
1120
1121 term.dirty[i] = 1;
1122 term.dirty[i-n] = 1;
1123 }
1124
1125 selscroll(orig, n);
1126 }
1127
1128 void
1129 tscrollup(int orig, int n) {
1130 int i;
1131 Line temp;
1132 LIMIT(n, 0, term.bot-orig+1);
1133
1134 tclearregion(0, orig, term.col-1, orig+n-1);
1135
1136 for(i = orig; i <= term.bot-n; i++) {
1137 temp = term.line[i];
1138 term.line[i] = term.line[i+n];
1139 term.line[i+n] = temp;
1140
1141 term.dirty[i] = 1;
1142 term.dirty[i+n] = 1;
1143 }
1144
1145 selscroll(orig, -n);
1146 }
1147
1148 void
1149 selscroll(int orig, int n) {
1150 if(sel.bx == -1)
1151 return;
1152
1153 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1154 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1155 sel.bx = -1;
1156 return;
1157 }
1158 if(sel.by < term.top) {
1159 sel.by = term.top;
1160 sel.bx = 0;
1161 }
1162 if(sel.ey > term.bot) {
1163 sel.ey = term.bot;
1164 sel.ex = term.col;
1165 }
1166 sel.b.y = sel.by, sel.b.x = sel.bx;
1167 sel.e.y = sel.ey, sel.e.x = sel.ex;
1168 }
1169 }
1170
1171 void
1172 tnewline(int first_col) {
1173 int y = term.c.y;
1174
1175 if(y == term.bot) {
1176 tscrollup(term.top, 1);
1177 } else {
1178 y++;
1179 }
1180 tmoveto(first_col ? 0 : term.c.x, y);
1181 }
1182
1183 void
1184 csiparse(void) {
1185 /* int noarg = 1; */
1186 char *p = csiescseq.buf;
1187
1188 csiescseq.narg = 0;
1189 if(*p == '?')
1190 csiescseq.priv = 1, p++;
1191
1192 while(p < csiescseq.buf+csiescseq.len) {
1193 while(isdigit(*p)) {
1194 csiescseq.arg[csiescseq.narg] *= 10;
1195 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1196 }
1197 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ) {
1198 csiescseq.narg++, p++;
1199 } else {
1200 csiescseq.mode = *p;
1201 csiescseq.narg++;
1202
1203 return;
1204 }
1205 }
1206 }
1207
1208 void
1209 tmoveto(int x, int y) {
1210 LIMIT(x, 0, term.col-1);
1211 LIMIT(y, 0, term.row-1);
1212 term.c.state &= ~CURSOR_WRAPNEXT;
1213 term.c.x = x;
1214 term.c.y = y;
1215 }
1216
1217 void
1218 tsetchar(char *c, Glyph *attr, int x, int y) {
1219 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1220 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1221 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1222 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1223 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1224 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1225 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1226 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1227 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1228 };
1229
1230 /*
1231 * The table is proudly stolen from rxvt.
1232 */
1233 if(attr->mode & ATTR_GFX) {
1234 if(c[0] >= 0x41 && c[0] <= 0x7e
1235 && vt100_0[c[0] - 0x41]) {
1236 c = vt100_0[c[0] - 0x41];
1237 }
1238 }
1239
1240 term.dirty[y] = 1;
1241 term.line[y][x] = *attr;
1242 memcpy(term.line[y][x].c, c, UTF_SIZ);
1243 term.line[y][x].state |= GLYPH_SET;
1244 }
1245
1246 void
1247 tclearregion(int x1, int y1, int x2, int y2) {
1248 int x, y, temp;
1249
1250 if(x1 > x2)
1251 temp = x1, x1 = x2, x2 = temp;
1252 if(y1 > y2)
1253 temp = y1, y1 = y2, y2 = temp;
1254
1255 LIMIT(x1, 0, term.col-1);
1256 LIMIT(x2, 0, term.col-1);
1257 LIMIT(y1, 0, term.row-1);
1258 LIMIT(y2, 0, term.row-1);
1259
1260 for(y = y1; y <= y2; y++) {
1261 term.dirty[y] = 1;
1262 for(x = x1; x <= x2; x++)
1263 term.line[y][x].state = 0;
1264 }
1265 }
1266
1267 void
1268 tdeletechar(int n) {
1269 int src = term.c.x + n;
1270 int dst = term.c.x;
1271 int size = term.col - src;
1272
1273 term.dirty[term.c.y] = 1;
1274
1275 if(src >= term.col) {
1276 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1277 return;
1278 }
1279
1280 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1281 size * sizeof(Glyph));
1282 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1283 }
1284
1285 void
1286 tinsertblank(int n) {
1287 int src = term.c.x;
1288 int dst = src + n;
1289 int size = term.col - dst;
1290
1291 term.dirty[term.c.y] = 1;
1292
1293 if(dst >= term.col) {
1294 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1295 return;
1296 }
1297
1298 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1299 size * sizeof(Glyph));
1300 tclearregion(src, term.c.y, dst - 1, term.c.y);
1301 }
1302
1303 void
1304 tinsertblankline(int n) {
1305 if(term.c.y < term.top || term.c.y > term.bot)
1306 return;
1307
1308 tscrolldown(term.c.y, n);
1309 }
1310
1311 void
1312 tdeleteline(int n) {
1313 if(term.c.y < term.top || term.c.y > term.bot)
1314 return;
1315
1316 tscrollup(term.c.y, n);
1317 }
1318
1319 void
1320 tsetattr(int *attr, int l) {
1321 int i;
1322
1323 for(i = 0; i < l; i++) {
1324 switch(attr[i]) {
1325 case 0:
1326 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1327 | ATTR_ITALIC | ATTR_BLINK);
1328 term.c.attr.fg = defaultfg;
1329 term.c.attr.bg = defaultbg;
1330 break;
1331 case 1:
1332 term.c.attr.mode |= ATTR_BOLD;
1333 break;
1334 case 3: /* enter standout (highlight) */
1335 term.c.attr.mode |= ATTR_ITALIC;
1336 break;
1337 case 4:
1338 term.c.attr.mode |= ATTR_UNDERLINE;
1339 break;
1340 case 5:
1341 term.c.attr.mode |= ATTR_BLINK;
1342 break;
1343 case 7:
1344 term.c.attr.mode |= ATTR_REVERSE;
1345 break;
1346 case 21:
1347 case 22:
1348 term.c.attr.mode &= ~ATTR_BOLD;
1349 break;
1350 case 23: /* leave standout (highlight) mode */
1351 term.c.attr.mode &= ~ATTR_ITALIC;
1352 break;
1353 case 24:
1354 term.c.attr.mode &= ~ATTR_UNDERLINE;
1355 break;
1356 case 25:
1357 term.c.attr.mode &= ~ATTR_BLINK;
1358 break;
1359 case 27:
1360 term.c.attr.mode &= ~ATTR_REVERSE;
1361 break;
1362 case 38:
1363 if(i + 2 < l && attr[i + 1] == 5) {
1364 i += 2;
1365 if(BETWEEN(attr[i], 0, 255)) {
1366 term.c.attr.fg = attr[i];
1367 } else {
1368 fprintf(stderr,
1369 "erresc: bad fgcolor %d\n",
1370 attr[i]);
1371 }
1372 } else {
1373 fprintf(stderr,
1374 "erresc(38): gfx attr %d unknown\n",
1375 attr[i]);
1376 }
1377 break;
1378 case 39:
1379 term.c.attr.fg = defaultfg;
1380 break;
1381 case 48:
1382 if(i + 2 < l && attr[i + 1] == 5) {
1383 i += 2;
1384 if(BETWEEN(attr[i], 0, 255)) {
1385 term.c.attr.bg = attr[i];
1386 } else {
1387 fprintf(stderr,
1388 "erresc: bad bgcolor %d\n",
1389 attr[i]);
1390 }
1391 } else {
1392 fprintf(stderr,
1393 "erresc(48): gfx attr %d unknown\n",
1394 attr[i]);
1395 }
1396 break;
1397 case 49:
1398 term.c.attr.bg = defaultbg;
1399 break;
1400 default:
1401 if(BETWEEN(attr[i], 30, 37)) {
1402 term.c.attr.fg = attr[i] - 30;
1403 } else if(BETWEEN(attr[i], 40, 47)) {
1404 term.c.attr.bg = attr[i] - 40;
1405 } else if(BETWEEN(attr[i], 90, 97)) {
1406 term.c.attr.fg = attr[i] - 90 + 8;
1407 } else if(BETWEEN(attr[i], 100, 107)) {
1408 term.c.attr.bg = attr[i] - 100 + 8;
1409 } else {
1410 fprintf(stderr,
1411 "erresc(default): gfx attr %d unknown\n",
1412 attr[i]), csidump();
1413 }
1414 break;
1415 }
1416 }
1417 }
1418
1419 void
1420 tsetscroll(int t, int b) {
1421 int temp;
1422
1423 LIMIT(t, 0, term.row-1);
1424 LIMIT(b, 0, term.row-1);
1425 if(t > b) {
1426 temp = t;
1427 t = b;
1428 b = temp;
1429 }
1430 term.top = t;
1431 term.bot = b;
1432 }
1433
1434 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1435
1436 void
1437 tsetmode(bool priv, bool set, int *args, int narg) {
1438 int *lim, mode;
1439
1440 for(lim = args + narg; args < lim; ++args) {
1441 if(priv) {
1442 switch(*args) {
1443 break;
1444 case 1: /* DECCKM -- Cursor key */
1445 MODBIT(term.mode, set, MODE_APPKEYPAD);
1446 break;
1447 case 5: /* DECSCNM -- Reverse video */
1448 mode = term.mode;
1449 MODBIT(term.mode, set, MODE_REVERSE);
1450 if(mode != term.mode)
1451 redraw();
1452 break;
1453 case 6: /* XXX: DECOM -- Origin */
1454 break;
1455 case 7: /* DECAWM -- Auto wrap */
1456 MODBIT(term.mode, set, MODE_WRAP);
1457 break;
1458 case 8: /* XXX: DECARM -- Auto repeat */
1459 break;
1460 case 0: /* Error (IGNORED) */
1461 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1462 break;
1463 case 25:
1464 MODBIT(term.c.state, !set, CURSOR_HIDE);
1465 break;
1466 case 1000: /* 1000,1002: enable xterm mouse report */
1467 MODBIT(term.mode, set, MODE_MOUSEBTN);
1468 break;
1469 case 1002:
1470 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1471 break;
1472 case 1049: /* = 1047 and 1048 */
1473 case 47:
1474 case 1047:
1475 if(IS_SET(MODE_ALTSCREEN))
1476 tclearregion(0, 0, term.col-1, term.row-1);
1477 if((set && !IS_SET(MODE_ALTSCREEN)) ||
1478 (!set && IS_SET(MODE_ALTSCREEN))) {
1479 tswapscreen();
1480 }
1481 if(*args != 1049)
1482 break;
1483 /* pass through */
1484 case 1048:
1485 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1486 break;
1487 default:
1488 /* case 2: DECANM -- ANSI/VT52 (NOT SUPPOURTED) */
1489 /* case 3: DECCOLM -- Column (NOT SUPPORTED) */
1490 /* case 4: DECSCLM -- Scroll (NOT SUPPORTED) */
1491 /* case 18: DECPFF -- Printer feed (NOT SUPPORTED) */
1492 /* case 19: DECPEX -- Printer extent (NOT SUPPORTED) */
1493 /* case 42: DECNRCM -- National characters (NOT SUPPORTED) */
1494 fprintf(stderr,
1495 "erresc: unknown private set/reset mode %d\n",
1496 *args);
1497 break;
1498 }
1499 } else {
1500 switch(*args) {
1501 case 0: /* Error (IGNORED) */
1502 break;
1503 case 2: /* KAM -- keyboard action */
1504 MODBIT(term.mode, set, MODE_KBDLOCK);
1505 break;
1506 case 4: /* IRM -- Insertion-replacement */
1507 MODBIT(term.mode, set, MODE_INSERT);
1508 break;
1509 case 12: /* XXX: SRM -- Send/Receive */
1510 break;
1511 case 20: /* LNM -- Linefeed/new line */
1512 MODBIT(term.mode, set, MODE_CRLF);
1513 break;
1514 default:
1515 fprintf(stderr,
1516 "erresc: unknown set/reset mode %d\n",
1517 *args);
1518 break;
1519 }
1520 }
1521 }
1522 }
1523 #undef MODBIT
1524
1525
1526 void
1527 csihandle(void) {
1528 switch(csiescseq.mode) {
1529 default:
1530 unknown:
1531 fprintf(stderr, "erresc: unknown csi ");
1532 csidump();
1533 /* die(""); */
1534 break;
1535 case '@': /* ICH -- Insert <n> blank char */
1536 DEFAULT(csiescseq.arg[0], 1);
1537 tinsertblank(csiescseq.arg[0]);
1538 break;
1539 case 'A': /* CUU -- Cursor <n> Up */
1540 case 'e':
1541 DEFAULT(csiescseq.arg[0], 1);
1542 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1543 break;
1544 case 'B': /* CUD -- Cursor <n> Down */
1545 DEFAULT(csiescseq.arg[0], 1);
1546 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1547 break;
1548 case 'c': /* DA -- Device Attributes */
1549 if(csiescseq.arg[0] == 0)
1550 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1551 break;
1552 case 'C': /* CUF -- Cursor <n> Forward */
1553 case 'a':
1554 DEFAULT(csiescseq.arg[0], 1);
1555 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1556 break;
1557 case 'D': /* CUB -- Cursor <n> Backward */
1558 DEFAULT(csiescseq.arg[0], 1);
1559 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1560 break;
1561 case 'E': /* CNL -- Cursor <n> Down and first col */
1562 DEFAULT(csiescseq.arg[0], 1);
1563 tmoveto(0, term.c.y+csiescseq.arg[0]);
1564 break;
1565 case 'F': /* CPL -- Cursor <n> Up and first col */
1566 DEFAULT(csiescseq.arg[0], 1);
1567 tmoveto(0, term.c.y-csiescseq.arg[0]);
1568 break;
1569 case 'g': /* TBC -- Tabulation clear */
1570 switch (csiescseq.arg[0]) {
1571 case 0: /* clear current tab stop */
1572 term.tabs[term.c.x] = 0;
1573 break;
1574 case 3: /* clear all the tabs */
1575 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1576 break;
1577 default:
1578 goto unknown;
1579 }
1580 break;
1581 case 'G': /* CHA -- Move to <col> */
1582 case '`': /* HPA */
1583 DEFAULT(csiescseq.arg[0], 1);
1584 tmoveto(csiescseq.arg[0]-1, term.c.y);
1585 break;
1586 case 'H': /* CUP -- Move to <row> <col> */
1587 case 'f': /* HVP */
1588 DEFAULT(csiescseq.arg[0], 1);
1589 DEFAULT(csiescseq.arg[1], 1);
1590 tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1591 break;
1592 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1593 DEFAULT(csiescseq.arg[0], 1);
1594 while(csiescseq.arg[0]--)
1595 tputtab(1);
1596 break;
1597 case 'J': /* ED -- Clear screen */
1598 sel.bx = -1;
1599 switch(csiescseq.arg[0]) {
1600 case 0: /* below */
1601 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1602 if(term.c.y < term.row-1)
1603 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1604 break;
1605 case 1: /* above */
1606 if(term.c.y > 1)
1607 tclearregion(0, 0, term.col-1, term.c.y-1);
1608 tclearregion(0, term.c.y, term.c.x, term.c.y);
1609 break;
1610 case 2: /* all */
1611 tclearregion(0, 0, term.col-1, term.row-1);
1612 break;
1613 default:
1614 goto unknown;
1615 }
1616 break;
1617 case 'K': /* EL -- Clear line */
1618 switch(csiescseq.arg[0]) {
1619 case 0: /* right */
1620 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1621 break;
1622 case 1: /* left */
1623 tclearregion(0, term.c.y, term.c.x, term.c.y);
1624 break;
1625 case 2: /* all */
1626 tclearregion(0, term.c.y, term.col-1, term.c.y);
1627 break;
1628 }
1629 break;
1630 case 'S': /* SU -- Scroll <n> line up */
1631 DEFAULT(csiescseq.arg[0], 1);
1632 tscrollup(term.top, csiescseq.arg[0]);
1633 break;
1634 case 'T': /* SD -- Scroll <n> line down */
1635 DEFAULT(csiescseq.arg[0], 1);
1636 tscrolldown(term.top, csiescseq.arg[0]);
1637 break;
1638 case 'L': /* IL -- Insert <n> blank lines */
1639 DEFAULT(csiescseq.arg[0], 1);
1640 tinsertblankline(csiescseq.arg[0]);
1641 break;
1642 case 'l': /* RM -- Reset Mode */
1643 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1644 break;
1645 case 'M': /* DL -- Delete <n> lines */
1646 DEFAULT(csiescseq.arg[0], 1);
1647 tdeleteline(csiescseq.arg[0]);
1648 break;
1649 case 'X': /* ECH -- Erase <n> char */
1650 DEFAULT(csiescseq.arg[0], 1);
1651 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1652 break;
1653 case 'P': /* DCH -- Delete <n> char */
1654 DEFAULT(csiescseq.arg[0], 1);
1655 tdeletechar(csiescseq.arg[0]);
1656 break;
1657 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1658 DEFAULT(csiescseq.arg[0], 1);
1659 while(csiescseq.arg[0]--)
1660 tputtab(0);
1661 break;
1662 case 'd': /* VPA -- Move to <row> */
1663 DEFAULT(csiescseq.arg[0], 1);
1664 tmoveto(term.c.x, csiescseq.arg[0]-1);
1665 break;
1666 case 'h': /* SM -- Set terminal mode */
1667 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1668 break;
1669 case 'm': /* SGR -- Terminal attribute (color) */
1670 tsetattr(csiescseq.arg, csiescseq.narg);
1671 break;
1672 case 'r': /* DECSTBM -- Set Scrolling Region */
1673 if(csiescseq.priv) {
1674 goto unknown;
1675 } else {
1676 DEFAULT(csiescseq.arg[0], 1);
1677 DEFAULT(csiescseq.arg[1], term.row);
1678 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1679 tmoveto(0, 0);
1680 }
1681 break;
1682 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1683 tcursor(CURSOR_SAVE);
1684 break;
1685 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1686 tcursor(CURSOR_LOAD);
1687 break;
1688 }
1689 }
1690
1691 void
1692 csidump(void) {
1693 int i;
1694 uint c;
1695
1696 printf("ESC[");
1697 for(i = 0; i < csiescseq.len; i++) {
1698 c = csiescseq.buf[i] & 0xff;
1699 if(isprint(c)) {
1700 putchar(c);
1701 } else if(c == '\n') {
1702 printf("(\\n)");
1703 } else if(c == '\r') {
1704 printf("(\\r)");
1705 } else if(c == 0x1b) {
1706 printf("(\\e)");
1707 } else {
1708 printf("(%02x)", c);
1709 }
1710 }
1711 putchar('\n');
1712 }
1713
1714 void
1715 csireset(void) {
1716 memset(&csiescseq, 0, sizeof(csiescseq));
1717 }
1718
1719 void
1720 strhandle(void) {
1721 char *p;
1722
1723 /*
1724 * TODO: make this being useful in case of color palette change.
1725 */
1726 strparse();
1727
1728 p = strescseq.buf;
1729
1730 switch(strescseq.type) {
1731 case ']': /* OSC -- Operating System Command */
1732 switch(p[0]) {
1733 case '0':
1734 case '1':
1735 case '2':
1736 /*
1737 * TODO: Handle special chars in string, like umlauts.
1738 */
1739 if(p[1] == ';') {
1740 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1741 }
1742 break;
1743 case ';':
1744 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1745 break;
1746 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1747 break;
1748 default:
1749 fprintf(stderr, "erresc: unknown str ");
1750 strdump();
1751 break;
1752 }
1753 break;
1754 case 'k': /* old title set compatibility */
1755 XStoreName(xw.dpy, xw.win, strescseq.buf);
1756 break;
1757 case 'P': /* DSC -- Device Control String */
1758 case '_': /* APC -- Application Program Command */
1759 case '^': /* PM -- Privacy Message */
1760 default:
1761 fprintf(stderr, "erresc: unknown str ");
1762 strdump();
1763 /* die(""); */
1764 break;
1765 }
1766 }
1767
1768 void
1769 strparse(void) {
1770 /*
1771 * TODO: Implement parsing like for CSI when required.
1772 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1773 */
1774 return;
1775 }
1776
1777 void
1778 strdump(void) {
1779 int i;
1780 uint c;
1781
1782 printf("ESC%c", strescseq.type);
1783 for(i = 0; i < strescseq.len; i++) {
1784 c = strescseq.buf[i] & 0xff;
1785 if(isprint(c)) {
1786 putchar(c);
1787 } else if(c == '\n') {
1788 printf("(\\n)");
1789 } else if(c == '\r') {
1790 printf("(\\r)");
1791 } else if(c == 0x1b) {
1792 printf("(\\e)");
1793 } else {
1794 printf("(%02x)", c);
1795 }
1796 }
1797 printf("ESC\\\n");
1798 }
1799
1800 void
1801 strreset(void) {
1802 memset(&strescseq, 0, sizeof(strescseq));
1803 }
1804
1805 void
1806 tputtab(bool forward) {
1807 uint x = term.c.x;
1808
1809 if(forward) {
1810 if(x == term.col)
1811 return;
1812 for(++x; x < term.col && !term.tabs[x]; ++x)
1813 /* nothing */ ;
1814 } else {
1815 if(x == 0)
1816 return;
1817 for(--x; x > 0 && !term.tabs[x]; --x)
1818 /* nothing */ ;
1819 }
1820 tmoveto(x, term.c.y);
1821 }
1822
1823 void
1824 tputc(char *c, int len) {
1825 uchar ascii = *c;
1826 bool control = ascii < '\x20' || ascii == 0177;
1827
1828 if(iofd != -1) {
1829 if (xwrite(iofd, c, len) < 0) {
1830 fprintf(stderr, "Error writting in %s:%s\n",
1831 opt_io, strerror(errno));
1832 close(iofd);
1833 iofd = -1;
1834 }
1835 }
1836 /*
1837 * STR sequences must be checked before of anything
1838 * because it can use some control codes as part of the sequence
1839 */
1840 if(term.esc & ESC_STR) {
1841 switch(ascii) {
1842 case '\033':
1843 term.esc = ESC_START | ESC_STR_END;
1844 break;
1845 case '\a': /* backwards compatibility to xterm */
1846 term.esc = 0;
1847 strhandle();
1848 break;
1849 default:
1850 strescseq.buf[strescseq.len++] = ascii;
1851 if(strescseq.len+1 >= STR_BUF_SIZ) {
1852 term.esc = 0;
1853 strhandle();
1854 }
1855 }
1856 return;
1857 }
1858 /*
1859 * Actions of control codes must be performed as soon they arrive
1860 * because they can be embedded inside a control sequence, and
1861 * they must not cause conflicts with sequences.
1862 */
1863 if(control) {
1864 switch(ascii) {
1865 case '\t': /* HT */
1866 tputtab(1);
1867 return;
1868 case '\b': /* BS */
1869 tmoveto(term.c.x-1, term.c.y);
1870 return;
1871 case '\r': /* CR */
1872 tmoveto(0, term.c.y);
1873 return;
1874 case '\f': /* LF */
1875 case '\v': /* VT */
1876 case '\n': /* LF */
1877 /* go to first col if the mode is set */
1878 tnewline(IS_SET(MODE_CRLF));
1879 return;
1880 case '\a': /* BEL */
1881 if(!(xw.state & WIN_FOCUSED))
1882 xseturgency(1);
1883 return;
1884 case '\033': /* ESC */
1885 csireset();
1886 term.esc = ESC_START;
1887 return;
1888 case '\016': /* SO */
1889 term.c.attr.mode |= ATTR_GFX;
1890 return;
1891 case '\017': /* SI */
1892 term.c.attr.mode &= ~ATTR_GFX;
1893 return;
1894 case '\032': /* SUB */
1895 case '\030': /* CAN */
1896 csireset();
1897 return;
1898 case '\005': /* ENQ (IGNORED) */
1899 case '\000': /* NUL (IGNORED) */
1900 case '\021': /* XON (IGNORED) */
1901 case '\023': /* XOFF (IGNORED) */
1902 case 0177: /* DEL (IGNORED) */
1903 return;
1904 }
1905 } else if(term.esc & ESC_START) {
1906 if(term.esc & ESC_CSI) {
1907 csiescseq.buf[csiescseq.len++] = ascii;
1908 if(BETWEEN(ascii, 0x40, 0x7E)
1909 || csiescseq.len >= ESC_BUF_SIZ) {
1910 term.esc = 0;
1911 csiparse(), csihandle();
1912 }
1913 } else if(term.esc & ESC_STR_END) {
1914 term.esc = 0;
1915 if(ascii == '\\')
1916 strhandle();
1917 } else if(term.esc & ESC_ALTCHARSET) {
1918 switch(ascii) {
1919 case '0': /* Line drawing set */
1920 term.c.attr.mode |= ATTR_GFX;
1921 break;
1922 case 'B': /* USASCII */
1923 term.c.attr.mode &= ~ATTR_GFX;
1924 break;
1925 case 'A': /* UK (IGNORED) */
1926 case '<': /* multinational charset (IGNORED) */
1927 case '5': /* Finnish (IGNORED) */
1928 case 'C': /* Finnish (IGNORED) */
1929 case 'K': /* German (IGNORED) */
1930 break;
1931 default:
1932 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1933 }
1934 term.esc = 0;
1935 } else if(term.esc & ESC_TEST) {
1936 if(ascii == '8') { /* DEC screen alignment test. */
1937 char E[UTF_SIZ] = "E";
1938 int x, y;
1939
1940 for(x = 0; x < term.col; ++x) {
1941 for(y = 0; y < term.row; ++y)
1942 tsetchar(E, &term.c.attr, x, y);
1943 }
1944 }
1945 term.esc = 0;
1946 } else {
1947 switch(ascii) {
1948 case '[':
1949 term.esc |= ESC_CSI;
1950 break;
1951 case '#':
1952 term.esc |= ESC_TEST;
1953 break;
1954 case 'P': /* DCS -- Device Control String */
1955 case '_': /* APC -- Application Program Command */
1956 case '^': /* PM -- Privacy Message */
1957 case ']': /* OSC -- Operating System Command */
1958 case 'k': /* old title set compatibility */
1959 strreset();
1960 strescseq.type = ascii;
1961 term.esc |= ESC_STR;
1962 break;
1963 case '(': /* set primary charset G0 */
1964 term.esc |= ESC_ALTCHARSET;
1965 break;
1966 case ')': /* set secondary charset G1 (IGNORED) */
1967 case '*': /* set tertiary charset G2 (IGNORED) */
1968 case '+': /* set quaternary charset G3 (IGNORED) */
1969 term.esc = 0;
1970 break;
1971 case 'D': /* IND -- Linefeed */
1972 if(term.c.y == term.bot) {
1973 tscrollup(term.top, 1);
1974 } else {
1975 tmoveto(term.c.x, term.c.y+1);
1976 }
1977 term.esc = 0;
1978 break;
1979 case 'E': /* NEL -- Next line */
1980 tnewline(1); /* always go to first col */
1981 term.esc = 0;
1982 break;
1983 case 'H': /* HTS -- Horizontal tab stop */
1984 term.tabs[term.c.x] = 1;
1985 term.esc = 0;
1986 break;
1987 case 'M': /* RI -- Reverse index */
1988 if(term.c.y == term.top) {
1989 tscrolldown(term.top, 1);
1990 } else {
1991 tmoveto(term.c.x, term.c.y-1);
1992 }
1993 term.esc = 0;
1994 break;
1995 case 'Z': /* DECID -- Identify Terminal */
1996 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1997 term.esc = 0;
1998 break;
1999 case 'c': /* RIS -- Reset to inital state */
2000 treset();
2001 term.esc = 0;
2002 xresettitle();
2003 break;
2004 case '=': /* DECPAM -- Application keypad */
2005 term.mode |= MODE_APPKEYPAD;
2006 term.esc = 0;
2007 break;
2008 case '>': /* DECPNM -- Normal keypad */
2009 term.mode &= ~MODE_APPKEYPAD;
2010 term.esc = 0;
2011 break;
2012 case '7': /* DECSC -- Save Cursor */
2013 tcursor(CURSOR_SAVE);
2014 term.esc = 0;
2015 break;
2016 case '8': /* DECRC -- Restore Cursor */
2017 tcursor(CURSOR_LOAD);
2018 term.esc = 0;
2019 break;
2020 case '\\': /* ST -- Stop */
2021 term.esc = 0;
2022 break;
2023 default:
2024 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2025 (uchar) ascii, isprint(ascii)? ascii:'.');
2026 term.esc = 0;
2027 }
2028 }
2029 /*
2030 * All characters which forms part of a sequence are not
2031 * printed
2032 */
2033 return;
2034 }
2035 /*
2036 * Display control codes only if we are in graphic mode
2037 */
2038 if(control && !(term.c.attr.mode & ATTR_GFX))
2039 return;
2040 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2041 sel.bx = -1;
2042 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
2043 tnewline(1); /* always go to first col */
2044 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2045 if(term.c.x+1 < term.col)
2046 tmoveto(term.c.x+1, term.c.y);
2047 else
2048 term.c.state |= CURSOR_WRAPNEXT;
2049 }
2050
2051 int
2052 tresize(int col, int row) {
2053 int i, x;
2054 int minrow = MIN(row, term.row);
2055 int mincol = MIN(col, term.col);
2056 int slide = term.c.y - row + 1;
2057 bool *bp;
2058
2059 if(col < 1 || row < 1)
2060 return 0;
2061
2062 /* free unneeded rows */
2063 i = 0;
2064 if(slide > 0) {
2065 /* slide screen to keep cursor where we expect it -
2066 * tscrollup would work here, but we can optimize to
2067 * memmove because we're freeing the earlier lines */
2068 for(/* i = 0 */; i < slide; i++) {
2069 free(term.line[i]);
2070 free(term.alt[i]);
2071 }
2072 memmove(term.line, term.line + slide, row * sizeof(Line));
2073 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2074 }
2075 for(i += row; i < term.row; i++) {
2076 free(term.line[i]);
2077 free(term.alt[i]);
2078 }
2079
2080 /* resize to new height */
2081 term.line = xrealloc(term.line, row * sizeof(Line));
2082 term.alt = xrealloc(term.alt, row * sizeof(Line));
2083 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2084 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2085
2086 /* resize each row to new width, zero-pad if needed */
2087 for(i = 0; i < minrow; i++) {
2088 term.dirty[i] = 1;
2089 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2090 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2091 for(x = mincol; x < col; x++) {
2092 term.line[i][x].state = 0;
2093 term.alt[i][x].state = 0;
2094 }
2095 }
2096
2097 /* allocate any new rows */
2098 for(/* i == minrow */; i < row; i++) {
2099 term.dirty[i] = 1;
2100 term.line[i] = xcalloc(col, sizeof(Glyph));
2101 term.alt [i] = xcalloc(col, sizeof(Glyph));
2102 }
2103 if(col > term.col) {
2104 bp = term.tabs + term.col;
2105
2106 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2107 while(--bp > term.tabs && !*bp)
2108 /* nothing */ ;
2109 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2110 *bp = 1;
2111 }
2112 /* update terminal size */
2113 term.col = col;
2114 term.row = row;
2115 /* make use of the LIMIT in tmoveto */
2116 tmoveto(term.c.x, term.c.y);
2117 /* reset scrolling region */
2118 tsetscroll(0, row-1);
2119
2120 return (slide > 0);
2121 }
2122
2123 void
2124 xresize(int col, int row) {
2125 xw.tw = MAX(1, 2*borderpx + col * xw.cw);
2126 xw.th = MAX(1, 2*borderpx + row * xw.ch);
2127
2128 XftDrawChange(xw.xft_draw, xw.buf);
2129 }
2130
2131 void
2132 xloadcols(void) {
2133 int i, r, g, b;
2134 XRenderColor xft_color = { .alpha = 0 };
2135
2136 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2137 for(i = 0; i < LEN(colorname); i++) {
2138 if(!colorname[i])
2139 continue;
2140 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.xft_col[i])) {
2141 die("Could not allocate color '%s'\n", colorname[i]);
2142 }
2143 }
2144
2145 /* load colors [16-255] ; same colors as xterm */
2146 for(i = 16, r = 0; r < 6; r++) {
2147 for(g = 0; g < 6; g++) {
2148 for(b = 0; b < 6; b++) {
2149 xft_color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
2150 xft_color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
2151 xft_color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
2152 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color, &dc.xft_col[i])) {
2153 die("Could not allocate color %d\n", i);
2154 }
2155 i++;
2156 }
2157 }
2158 }
2159
2160 for(r = 0; r < 24; r++, i++) {
2161 xft_color.red = xft_color.green = xft_color.blue = 0x0808 + 0x0a0a * r;
2162 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color,
2163 &dc.xft_col[i])) {
2164 die("Could not allocate color %d\n", i);
2165 }
2166 }
2167 }
2168
2169 void
2170 xtermclear(int col1, int row1, int col2, int row2) {
2171 XftDrawRect(xw.xft_draw,
2172 &dc.xft_col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2173 borderpx + col1 * xw.cw,
2174 borderpx + row1 * xw.ch,
2175 (col2-col1+1) * xw.cw,
2176 (row2-row1+1) * xw.ch);
2177 }
2178
2179 /*
2180 * Absolute coordinates.
2181 */
2182 void
2183 xclear(int x1, int y1, int x2, int y2) {
2184 XftDrawRect(xw.xft_draw,
2185 &dc.xft_col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2186 x1, y1, x2-x1, y2-y1);
2187 }
2188
2189 void
2190 xhints(void) {
2191 XClassHint class = {opt_class ? opt_class : termname, termname};
2192 XWMHints wm = {.flags = InputHint, .input = 1};
2193 XSizeHints *sizeh = NULL;
2194
2195 sizeh = XAllocSizeHints();
2196 if(xw.isfixed == False) {
2197 sizeh->flags = PSize | PResizeInc | PBaseSize;
2198 sizeh->height = xw.h;
2199 sizeh->width = xw.w;
2200 sizeh->height_inc = xw.ch;
2201 sizeh->width_inc = xw.cw;
2202 sizeh->base_height = 2*borderpx;
2203 sizeh->base_width = 2*borderpx;
2204 } else {
2205 sizeh->flags = PMaxSize | PMinSize;
2206 sizeh->min_width = sizeh->max_width = xw.fw;
2207 sizeh->min_height = sizeh->max_height = xw.fh;
2208 }
2209
2210 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2211 XFree(sizeh);
2212 }
2213
2214 int
2215 xloadfont(Font *f, FcPattern *pattern) {
2216 FcPattern *match;
2217 FcResult result;
2218
2219 match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
2220 if(!match)
2221 return 1;
2222 if(!(f->xft_set = XftFontOpenPattern(xw.dpy, match))) {
2223 FcPatternDestroy(match);
2224 return 1;
2225 }
2226
2227 f->ascent = f->xft_set->ascent;
2228 f->descent = f->xft_set->descent;
2229 f->lbearing = 0;
2230 f->rbearing = f->xft_set->max_advance_width;
2231
2232 f->height = f->xft_set->height;
2233 f->width = f->lbearing + f->rbearing;
2234
2235 return 0;
2236 }
2237
2238 void
2239 xloadfonts(char *fontstr, int fontsize) {
2240 FcPattern *pattern;
2241 FcResult result;
2242 double fontval;
2243
2244 if(fontstr[0] == '-') {
2245 pattern = XftXlfdParse(fontstr, False, False);
2246 } else {
2247 pattern = FcNameParse((FcChar8 *)fontstr);
2248 }
2249
2250 if(!pattern)
2251 die("st: can't open font %s\n", fontstr);
2252
2253 if(fontsize > 0) {
2254 FcPatternDel(pattern, FC_PIXEL_SIZE);
2255 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2256 usedfontsize = fontsize;
2257 } else {
2258 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2259 if(result == FcResultMatch) {
2260 usedfontsize = (int)fontval;
2261 } else {
2262 /*
2263 * Default font size is 12, if none given. This is to
2264 * have a known usedfontsize value.
2265 */
2266 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2267 usedfontsize = 12;
2268 }
2269 }
2270
2271 if(xloadfont(&dc.font, pattern))
2272 die("st: can't open font %s\n", fontstr);
2273
2274 /* Setting character width and height. */
2275 xw.cw = dc.font.width;
2276 xw.ch = dc.font.height;
2277
2278 FcPatternDel(pattern, FC_WEIGHT);
2279 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2280 if(xloadfont(&dc.bfont, pattern))
2281 die("st: can't open font %s\n", fontstr);
2282
2283 FcPatternDel(pattern, FC_SLANT);
2284 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2285 if(xloadfont(&dc.ibfont, pattern))
2286 die("st: can't open font %s\n", fontstr);
2287
2288 FcPatternDel(pattern, FC_WEIGHT);
2289 if(xloadfont(&dc.ifont, pattern))
2290 die("st: can't open font %s\n", fontstr);
2291
2292 FcPatternDestroy(pattern);
2293 }
2294
2295 void
2296 xzoom(const Arg *arg)
2297 {
2298 xloadfonts(usedfont, usedfontsize + arg->i);
2299 cresize(0, 0);
2300 draw();
2301 }
2302
2303 void
2304 xinit(void) {
2305 XSetWindowAttributes attrs;
2306 Cursor cursor;
2307 Window parent;
2308 int sw, sh, major, minor;
2309
2310 if(!(xw.dpy = XOpenDisplay(NULL)))
2311 die("Can't open display\n");
2312 xw.scr = XDefaultScreen(xw.dpy);
2313 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2314
2315 /* font */
2316 usedfont = (opt_font == NULL)? font : opt_font;
2317 xloadfonts(usedfont, 0);
2318
2319 /* colors */
2320 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2321 xloadcols();
2322
2323 /* adjust fixed window geometry */
2324 if(xw.isfixed) {
2325 sw = DisplayWidth(xw.dpy, xw.scr);
2326 sh = DisplayHeight(xw.dpy, xw.scr);
2327 if(xw.fx < 0)
2328 xw.fx = sw + xw.fx - xw.fw - 1;
2329 if(xw.fy < 0)
2330 xw.fy = sh + xw.fy - xw.fh - 1;
2331
2332 xw.h = xw.fh;
2333 xw.w = xw.fw;
2334 } else {
2335 /* window - default size */
2336 xw.h = 2*borderpx + term.row * xw.ch;
2337 xw.w = 2*borderpx + term.col * xw.cw;
2338 xw.fx = 0;
2339 xw.fy = 0;
2340 }
2341
2342 attrs.background_pixel = dc.xft_col[defaultbg].pixel;
2343 attrs.border_pixel = dc.xft_col[defaultbg].pixel;
2344 attrs.bit_gravity = NorthWestGravity;
2345 attrs.event_mask = FocusChangeMask | KeyPressMask
2346 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2347 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2348 attrs.colormap = xw.cmap;
2349
2350 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
2351 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2352 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2353 xw.vis,
2354 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2355 | CWColormap,
2356 &attrs);
2357
2358 /* double buffering */
2359 if(!XdbeQueryExtension(xw.dpy, &major, &minor))
2360 die("Xdbe extension is not present\n");
2361 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
2362
2363 /* Xft rendering context */
2364 xw.xft_draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2365
2366 /* input methods */
2367 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
2368 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2369 | XIMStatusNothing, XNClientWindow, xw.win,
2370 XNFocusWindow, xw.win, NULL);
2371 /* gc */
2372 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
2373
2374 /* white cursor, black outline */
2375 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2376 XDefineCursor(xw.dpy, xw.win, cursor);
2377 XRecolorCursor(xw.dpy, cursor,
2378 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2379 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2380
2381 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2382 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2383 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2384
2385 xresettitle();
2386 XMapWindow(xw.dpy, xw.win);
2387 xhints();
2388 XSync(xw.dpy, 0);
2389 }
2390
2391 void
2392 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2393 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2394 width = charlen * xw.cw;
2395 Font *font = &dc.font;
2396 XGlyphInfo extents;
2397 XftColor *fg = &dc.xft_col[base.fg], *bg = &dc.xft_col[base.bg],
2398 *temp, revfg, revbg;
2399 XRenderColor colfg, colbg;
2400
2401 if(base.mode & ATTR_BOLD) {
2402 if(BETWEEN(base.fg, 0, 7)) {
2403 /* basic system colors */
2404 fg = &dc.xft_col[base.fg + 8];
2405 } else if(BETWEEN(base.fg, 16, 195)) {
2406 /* 256 colors */
2407 fg = &dc.xft_col[base.fg + 36];
2408 } else if(BETWEEN(base.fg, 232, 251)) {
2409 /* greyscale */
2410 fg = &dc.xft_col[base.fg + 4];
2411 }
2412 /*
2413 * Those ranges will not be brightened:
2414 * 8 - 15 – bright system colors
2415 * 196 - 231 – highest 256 color cube
2416 * 252 - 255 – brightest colors in greyscale
2417 */
2418 font = &dc.bfont;
2419 }
2420
2421 if(base.mode & ATTR_ITALIC)
2422 font = &dc.ifont;
2423 if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
2424 font = &dc.ibfont;
2425
2426 if(IS_SET(MODE_REVERSE)) {
2427 if(fg == &dc.xft_col[defaultfg]) {
2428 fg = &dc.xft_col[defaultbg];
2429 } else {
2430 colfg.red = ~fg->color.red;
2431 colfg.green = ~fg->color.green;
2432 colfg.blue = ~fg->color.blue;
2433 colfg.alpha = fg->color.alpha;
2434 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2435 fg = &revfg;
2436 }
2437
2438 if(bg == &dc.xft_col[defaultbg]) {
2439 bg = &dc.xft_col[defaultfg];
2440 } else {
2441 colbg.red = ~bg->color.red;
2442 colbg.green = ~bg->color.green;
2443 colbg.blue = ~bg->color.blue;
2444 colbg.alpha = bg->color.alpha;
2445 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2446 bg = &revbg;
2447 }
2448 }
2449
2450 if(base.mode & ATTR_REVERSE)
2451 temp = fg, fg = bg, bg = temp;
2452
2453 XftTextExtentsUtf8(xw.dpy, font->xft_set, (FcChar8 *)s, bytelen,
2454 &extents);
2455 width = extents.xOff;
2456
2457 /* Intelligent cleaning up of the borders. */
2458 if(x == 0) {
2459 xclear(0, (y == 0)? 0 : winy, borderpx,
2460 winy + xw.ch + (y == term.row-1)? xw.h : 0);
2461 }
2462 if(x + charlen >= term.col-1) {
2463 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2464 (y == term.row-1)? xw.h : (winy + xw.ch));
2465 }
2466 if(y == 0)
2467 xclear(winx, 0, winx + width, borderpx);
2468 if(y == term.row-1)
2469 xclear(winx, winy + xw.ch, winx + width, xw.h);
2470
2471 XftDrawRect(xw.xft_draw, bg, winx, winy, width, xw.ch);
2472 XftDrawStringUtf8(xw.xft_draw, fg, font->xft_set, winx,
2473 winy + font->ascent, (FcChar8 *)s, bytelen);
2474
2475 if(base.mode & ATTR_UNDERLINE) {
2476 XftDrawRect(xw.xft_draw, fg, winx, winy + font->ascent + 1,
2477 width, 1);
2478 }
2479 }
2480
2481 void
2482 xdrawcursor(void) {
2483 static int oldx = 0, oldy = 0;
2484 int sl;
2485 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs, 0};
2486
2487 LIMIT(oldx, 0, term.col-1);
2488 LIMIT(oldy, 0, term.row-1);
2489
2490 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2491 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2492
2493 /* remove the old cursor */
2494 if(term.line[oldy][oldx].state & GLYPH_SET) {
2495 sl = utf8size(term.line[oldy][oldx].c);
2496 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
2497 oldy, 1, sl);
2498 } else {
2499 xtermclear(oldx, oldy, oldx, oldy);
2500 }
2501
2502 /* draw the new one */
2503 if(!(term.c.state & CURSOR_HIDE)) {
2504 if(!(xw.state & WIN_FOCUSED))
2505 g.bg = defaultucs;
2506
2507 if(IS_SET(MODE_REVERSE))
2508 g.mode |= ATTR_REVERSE, g.fg = defaultcs, g.bg = defaultfg;
2509
2510 sl = utf8size(g.c);
2511 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2512 oldx = term.c.x, oldy = term.c.y;
2513 }
2514 }
2515
2516 void
2517 xresettitle(void) {
2518 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
2519 }
2520
2521 void
2522 redraw(void) {
2523 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2524
2525 tfulldirt();
2526 draw();
2527 XSync(xw.dpy, False); /* necessary for a good tput flash */
2528 nanosleep(&tv, NULL);
2529 }
2530
2531 void
2532 draw(void) {
2533 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2534
2535 drawregion(0, 0, term.col, term.row);
2536 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2537 }
2538
2539 void
2540 drawregion(int x1, int y1, int x2, int y2) {
2541 int ic, ib, x, y, ox, sl;
2542 Glyph base, new;
2543 char buf[DRAW_BUF_SIZ];
2544 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
2545
2546 if((sel.alt && !alt) || (!sel.alt && alt))
2547 ena_sel = 0;
2548 if(!(xw.state & WIN_VISIBLE))
2549 return;
2550
2551 for(y = y1; y < y2; y++) {
2552 if(!term.dirty[y])
2553 continue;
2554
2555 xtermclear(0, y, term.col, y);
2556 term.dirty[y] = 0;
2557 base = term.line[y][0];
2558 ic = ib = ox = 0;
2559 for(x = x1; x < x2; x++) {
2560 new = term.line[y][x];
2561 if(ena_sel && *(new.c) && selected(x, y))
2562 new.mode ^= ATTR_REVERSE;
2563 if(ib > 0 && (!(new.state & GLYPH_SET)
2564 || ATTRCMP(base, new)
2565 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2566 xdraws(buf, base, ox, y, ic, ib);
2567 ic = ib = 0;
2568 }
2569 if(new.state & GLYPH_SET) {
2570 if(ib == 0) {
2571 ox = x;
2572 base = new;
2573 }
2574 sl = utf8size(new.c);
2575 memcpy(buf+ib, new.c, sl);
2576 ib += sl;
2577 ++ic;
2578 }
2579 }
2580 if(ib > 0)
2581 xdraws(buf, base, ox, y, ic, ib);
2582 }
2583 xdrawcursor();
2584 }
2585
2586 void
2587 expose(XEvent *ev) {
2588 XExposeEvent *e = &ev->xexpose;
2589
2590 if(xw.state & WIN_REDRAW) {
2591 if(!e->count)
2592 xw.state &= ~WIN_REDRAW;
2593 }
2594 }
2595
2596 void
2597 visibility(XEvent *ev) {
2598 XVisibilityEvent *e = &ev->xvisibility;
2599
2600 if(e->state == VisibilityFullyObscured) {
2601 xw.state &= ~WIN_VISIBLE;
2602 } else if(!(xw.state & WIN_VISIBLE)) {
2603 /* need a full redraw for next Expose, not just a buf copy */
2604 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2605 }
2606 }
2607
2608 void
2609 unmap(XEvent *ev) {
2610 xw.state &= ~WIN_VISIBLE;
2611 }
2612
2613 void
2614 xseturgency(int add) {
2615 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2616
2617 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2618 XSetWMHints(xw.dpy, xw.win, h);
2619 XFree(h);
2620 }
2621
2622 void
2623 focus(XEvent *ev) {
2624 if(ev->type == FocusIn) {
2625 XSetICFocus(xw.xic);
2626 xw.state |= WIN_FOCUSED;
2627 xseturgency(0);
2628 } else {
2629 XUnsetICFocus(xw.xic);
2630 xw.state &= ~WIN_FOCUSED;
2631 }
2632 }
2633
2634 char*
2635 kmap(KeySym k, uint state) {
2636 int i;
2637 uint mask;
2638
2639 state &= ~Mod2Mask;
2640 for(i = 0; i < LEN(key); i++) {
2641 mask = key[i].mask;
2642
2643 if(key[i].k == k && ((state & mask) == mask
2644 || (mask == XK_NO_MOD && !state))) {
2645 return (char*)key[i].s;
2646 }
2647 }
2648 return NULL;
2649 }
2650
2651 void
2652 kpress(XEvent *ev) {
2653 XKeyEvent *e = &ev->xkey;
2654 KeySym ksym;
2655 char buf[32], *customkey;
2656 int len, meta, shift, i;
2657 Status status;
2658
2659 if (IS_SET(MODE_KBDLOCK))
2660 return;
2661
2662 meta = e->state & Mod1Mask;
2663 shift = e->state & ShiftMask;
2664 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2665
2666 /* 1. shortcuts */
2667 for(i = 0; i < LEN(shortcuts); i++) {
2668 if((ksym == shortcuts[i].keysym)
2669 && (CLEANMASK(shortcuts[i].mod) == \
2670 CLEANMASK(e->state))
2671 && shortcuts[i].func) {
2672 shortcuts[i].func(&(shortcuts[i].arg));
2673 }
2674 }
2675
2676 /* 2. custom keys from config.h */
2677 if((customkey = kmap(ksym, e->state))) {
2678 ttywrite(customkey, strlen(customkey));
2679 /* 2. hardcoded (overrides X lookup) */
2680 } else {
2681 switch(ksym) {
2682 case XK_Up:
2683 case XK_Down:
2684 case XK_Left:
2685 case XK_Right:
2686 /* XXX: shift up/down doesn't work */
2687 sprintf(buf, "\033%c%c",
2688 IS_SET(MODE_APPKEYPAD) ? 'O' : '[',
2689 (shift ? "dacb":"DACB")[ksym - XK_Left]);
2690 ttywrite(buf, 3);
2691 break;
2692 case XK_Insert:
2693 if(shift)
2694 selpaste();
2695 break;
2696 case XK_Return:
2697 if(meta)
2698 ttywrite("\033", 1);
2699
2700 if(IS_SET(MODE_CRLF)) {
2701 ttywrite("\r\n", 2);
2702 } else {
2703 ttywrite("\r", 1);
2704 }
2705 break;
2706 /* 3. X lookup */
2707 default:
2708 if(len > 0) {
2709 if(meta && len == 1)
2710 ttywrite("\033", 1);
2711 ttywrite(buf, len);
2712 }
2713 break;
2714 }
2715 }
2716 }
2717
2718 void
2719 cmessage(XEvent *e) {
2720 /* See xembed specs
2721 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2722 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2723 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2724 xw.state |= WIN_FOCUSED;
2725 xseturgency(0);
2726 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2727 xw.state &= ~WIN_FOCUSED;
2728 }
2729 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
2730 /* Send SIGHUP to shell */
2731 kill(pid, SIGHUP);
2732 exit(EXIT_SUCCESS);
2733 }
2734 }
2735
2736 void
2737 cresize(int width, int height)
2738 {
2739 int col, row;
2740
2741 if(width != 0)
2742 xw.w = width;
2743 if(height != 0)
2744 xw.h = height;
2745
2746 col = (xw.w - 2*borderpx) / xw.cw;
2747 row = (xw.h - 2*borderpx) / xw.ch;
2748
2749 tresize(col, row);
2750 xresize(col, row);
2751 ttyresize();
2752 }
2753
2754 void
2755 resize(XEvent *e) {
2756 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2757 return;
2758
2759 cresize(e->xconfigure.width, e->xconfigure.height);
2760 }
2761
2762 void
2763 run(void) {
2764 XEvent ev;
2765 fd_set rfd;
2766 int xfd = XConnectionNumber(xw.dpy), i;
2767 struct timeval drawtimeout, *tv = NULL;
2768
2769 for(i = 0;; i++) {
2770 FD_ZERO(&rfd);
2771 FD_SET(cmdfd, &rfd);
2772 FD_SET(xfd, &rfd);
2773 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
2774 if(errno == EINTR)
2775 continue;
2776 die("select failed: %s\n", SERRNO);
2777 }
2778
2779 /*
2780 * Stop after a certain number of reads so the user does not
2781 * feel like the system is stuttering.
2782 */
2783 if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
2784 ttyread();
2785
2786 /*
2787 * Just wait a bit so it isn't disturbing the
2788 * user and the system is able to write something.
2789 */
2790 drawtimeout.tv_sec = 0;
2791 drawtimeout.tv_usec = 5;
2792 tv = &drawtimeout;
2793 continue;
2794 }
2795 i = 0;
2796 tv = NULL;
2797
2798 while(XPending(xw.dpy)) {
2799 XNextEvent(xw.dpy, &ev);
2800 if(XFilterEvent(&ev, None))
2801 continue;
2802 if(handler[ev.type])
2803 (handler[ev.type])(&ev);
2804 }
2805
2806 draw();
2807 XFlush(xw.dpy);
2808 }
2809 }
2810
2811 int
2812 main(int argc, char *argv[]) {
2813 int i, bitm, xr, yr;
2814 uint wr, hr;
2815
2816 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2817 xw.isfixed = False;
2818
2819 for(i = 1; i < argc; i++) {
2820 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2821 case 'c':
2822 if(++i < argc)
2823 opt_class = argv[i];
2824 break;
2825 case 'e':
2826 /* eat every remaining arguments */
2827 if(++i < argc)
2828 opt_cmd = &argv[i];
2829 goto run;
2830 case 'f':
2831 if(++i < argc)
2832 opt_font = argv[i];
2833 break;
2834 case 'g':
2835 if(++i >= argc)
2836 break;
2837
2838 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2839 if(bitm & XValue)
2840 xw.fx = xr;
2841 if(bitm & YValue)
2842 xw.fy = yr;
2843 if(bitm & WidthValue)
2844 xw.fw = (int)wr;
2845 if(bitm & HeightValue)
2846 xw.fh = (int)hr;
2847 if(bitm & XNegative && xw.fx == 0)
2848 xw.fx = -1;
2849 if(bitm & XNegative && xw.fy == 0)
2850 xw.fy = -1;
2851
2852 if(xw.fh != 0 && xw.fw != 0)
2853 xw.isfixed = True;
2854 break;
2855 case 'o':
2856 if(++i < argc)
2857 opt_io = argv[i];
2858 break;
2859 case 't':
2860 if(++i < argc)
2861 opt_title = argv[i];
2862 break;
2863 case 'v':
2864 default:
2865 die(USAGE);
2866 case 'w':
2867 if(++i < argc)
2868 opt_embed = argv[i];
2869 break;
2870 }
2871 }
2872
2873 run:
2874 setlocale(LC_CTYPE, "");
2875 XSetLocaleModifiers("");
2876 tnew(80, 24);
2877 xinit();
2878 ttynew();
2879 selinit();
2880 run();
2881 return 0;
2882 }
2883