Xinqi Bao's Git

projects / st.git / blob
summary | log | commit | diff | tree
history | raw | HEAD
Applying the patch of the little girl <[email protected]> to make cjk input
[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 #define X2COL(x) (((x) - BORDER)/xw.cw)
76 #define Y2ROW(y) (((y) - BORDER)/xw.ch)
77
78 #define VT102ID "\033[?6c"
79
80 enum glyph_attribute {
81 ATTR_NULL = 0,
82 ATTR_REVERSE = 1,
83 ATTR_UNDERLINE = 2,
84 ATTR_BOLD = 4,
85 ATTR_GFX = 8,
86 ATTR_ITALIC = 16,
87 ATTR_BLINK = 32,
88 };
89
90 enum cursor_movement {
91 CURSOR_UP,
92 CURSOR_DOWN,
93 CURSOR_LEFT,
94 CURSOR_RIGHT,
95 CURSOR_SAVE,
96 CURSOR_LOAD
97 };
98
99 enum cursor_state {
100 CURSOR_DEFAULT = 0,
101 CURSOR_HIDE = 1,
102 CURSOR_WRAPNEXT = 2
103 };
104
105 enum glyph_state {
106 GLYPH_SET = 1,
107 GLYPH_DIRTY = 2
108 };
109
110 enum term_mode {
111 MODE_WRAP = 1,
112 MODE_INSERT = 2,
113 MODE_APPKEYPAD = 4,
114 MODE_ALTSCREEN = 8,
115 MODE_CRLF = 16,
116 MODE_MOUSEBTN = 32,
117 MODE_MOUSEMOTION = 64,
118 MODE_MOUSE = 32|64,
119 MODE_REVERSE = 128,
120 MODE_KBDLOCK = 256
121 };
122
123 enum escape_state {
124 ESC_START = 1,
125 ESC_CSI = 2,
126 ESC_STR = 4, /* DSC, OSC, PM, APC */
127 ESC_ALTCHARSET = 8,
128 ESC_STR_END = 16, /* a final string was encountered */
129 ESC_TEST = 32, /* Enter in test mode */
130 };
131
132 enum window_state {
133 WIN_VISIBLE = 1,
134 WIN_REDRAW = 2,
135 WIN_FOCUSED = 4
136 };
137
138 /* bit macro */
139 #undef B0
140 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
141
142 typedef unsigned char uchar;
143 typedef unsigned int uint;
144 typedef unsigned long ulong;
145 typedef unsigned short ushort;
146
147 typedef struct {
148 char c[UTF_SIZ]; /* character code */
149 uchar mode; /* attribute flags */
150 ushort fg; /* foreground */
151 ushort bg; /* background */
152 uchar state; /* state flags */
153 } Glyph;
154
155 typedef Glyph* Line;
156
157 typedef struct {
158 Glyph attr; /* current char attributes */
159 int x;
160 int y;
161 char state;
162 } TCursor;
163
164 /* CSI Escape sequence structs */
165 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
166 typedef struct {
167 char buf[ESC_BUF_SIZ]; /* raw string */
168 int len; /* raw string length */
169 char priv;
170 int arg[ESC_ARG_SIZ];
171 int narg; /* nb of args */
172 char mode;
173 } CSIEscape;
174
175 /* STR Escape sequence structs */
176 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
177 typedef struct {
178 char type; /* ESC type ... */
179 char buf[STR_BUF_SIZ]; /* raw string */
180 int len; /* raw string length */
181 char *args[STR_ARG_SIZ];
182 int narg; /* nb of args */
183 } STREscape;
184
185 /* Internal representation of the screen */
186 typedef struct {
187 int row; /* nb row */
188 int col; /* nb col */
189 Line *line; /* screen */
190 Line *alt; /* alternate screen */
191 bool *dirty; /* dirtyness of lines */
192 TCursor c; /* cursor */
193 int top; /* top scroll limit */
194 int bot; /* bottom scroll limit */
195 int mode; /* terminal mode flags */
196 int esc; /* escape state flags */
197 bool *tabs;
198 } Term;
199
200 /* Purely graphic info */
201 typedef struct {
202 Display* dpy;
203 Colormap cmap;
204 Window win;
205 XdbeBackBuffer buf;
206 Atom xembed, wmdeletewin;
207 XIM xim;
208 XIC xic;
209 XftDraw *xft_draw;
210 Visual *vis;
211 int scr;
212 bool isfixed; /* is fixed geometry? */
213 int fx, fy, fw, fh; /* fixed geometry */
214 int tw, th; /* tty width and height */
215 int w; /* window width */
216 int h; /* window height */
217 int ch; /* char height */
218 int cw; /* char width */
219 char state; /* focus, redraw, visible */
220 } XWindow;
221
222 typedef struct {
223 KeySym k;
224 uint mask;
225 char s[ESC_BUF_SIZ];
226 } Key;
227
228 /* TODO: use better name for vars... */
229 typedef struct {
230 int mode;
231 int bx, by;
232 int ex, ey;
233 struct {
234 int x, y;
235 } b, e;
236 char *clip;
237 Atom xtarget;
238 bool alt;
239 struct timeval tclick1;
240 struct timeval tclick2;
241 } Selection;
242
243 typedef union {
244 int i;
245 unsigned int ui;
246 float f;
247 const void *v;
248 } Arg;
249
250 typedef struct {
251 unsigned int mod;
252 KeySym keysym;
253 void (*func)(const Arg *);
254 const Arg arg;
255 } Shortcut;
256
257 /* function definitions used in config.h */
258 static void xzoom(const Arg *);
259
260 /* Config.h for applying patches and the configuration. */
261 #include "config.h"
262
263 /* Font structure */
264 typedef struct {
265 int height;
266 int width;
267 int ascent;
268 int descent;
269 short lbearing;
270 short rbearing;
271 XftFont *xft_set;
272 } Font;
273
274 /* Drawing Context */
275 typedef struct {
276 XftColor xft_col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
277 GC gc;
278 Font font, bfont, ifont, ibfont;
279 } DC;
280
281 static void die(const char *, ...);
282 static void draw(void);
283 static void redraw(void);
284 static void drawregion(int, int, int, int);
285 static void execsh(void);
286 static void sigchld(int);
287 static void run(void);
288
289 static void csidump(void);
290 static void csihandle(void);
291 static void csiparse(void);
292 static void csireset(void);
293 static void strdump(void);
294 static void strhandle(void);
295 static void strparse(void);
296 static void strreset(void);
297
298 static void tclearregion(int, int, int, int);
299 static void tcursor(int);
300 static void tdeletechar(int);
301 static void tdeleteline(int);
302 static void tinsertblank(int);
303 static void tinsertblankline(int);
304 static void tmoveto(int, int);
305 static void tnew(int, int);
306 static void tnewline(int);
307 static void tputtab(bool);
308 static void tputc(char *, int);
309 static void treset(void);
310 static int tresize(int, int);
311 static void tscrollup(int, int);
312 static void tscrolldown(int, int);
313 static void tsetattr(int*, int);
314 static void tsetchar(char *, Glyph *, int, int);
315 static void tsetscroll(int, int);
316 static void tswapscreen(void);
317 static void tsetdirt(int, int);
318 static void tsetmode(bool, bool, int *, int);
319 static void tfulldirt(void);
320
321 static void ttynew(void);
322 static void ttyread(void);
323 static void ttyresize(void);
324 static void ttywrite(const char *, size_t);
325
326 static void xdraws(char *, Glyph, int, int, int, int);
327 static void xhints(void);
328 static void xclear(int, int, int, int);
329 static void xdrawcursor(void);
330 static void xinit(void);
331 static void xloadcols(void);
332 static void xresettitle(void);
333 static void xseturgency(int);
334 static void xsetsel(char*);
335 static void xtermclear(int, int, int, int);
336 static void xresize(int, int);
337
338 static void expose(XEvent *);
339 static void visibility(XEvent *);
340 static void unmap(XEvent *);
341 static char *kmap(KeySym, uint);
342 static void kpress(XEvent *);
343 static void cmessage(XEvent *);
344 static void cresize(int width, int height);
345 static void resize(XEvent *);
346 static void focus(XEvent *);
347 static void brelease(XEvent *);
348 static void bpress(XEvent *);
349 static void bmotion(XEvent *);
350 static void selnotify(XEvent *);
351 static void selclear(XEvent *);
352 static void selrequest(XEvent *);
353
354 static void selinit(void);
355 static inline bool selected(int, int);
356 static void selcopy(void);
357 static void selpaste(void);
358 static void selscroll(int, int);
359
360 static int utf8decode(char *, long *);
361 static int utf8encode(long *, char *);
362 static int utf8size(char *);
363 static int isfullutf8(char *, int);
364
365 static ssize_t xwrite(int, char *, size_t);
366 static void *xmalloc(size_t);
367 static void *xrealloc(void *, size_t);
368 static void *xcalloc(size_t nmemb, size_t size);
369
370 static void (*handler[LASTEvent])(XEvent *) = {
371 [KeyPress] = kpress,
372 [ClientMessage] = cmessage,
373 [ConfigureNotify] = resize,
374 [VisibilityNotify] = visibility,
375 [UnmapNotify] = unmap,
376 [Expose] = expose,
377 [FocusIn] = focus,
378 [FocusOut] = focus,
379 [MotionNotify] = bmotion,
380 [ButtonPress] = bpress,
381 [ButtonRelease] = brelease,
382 [SelectionClear] = selclear,
383 [SelectionNotify] = selnotify,
384 [SelectionRequest] = selrequest,
385 };
386
387 /* Globals */
388 static DC dc;
389 static XWindow xw;
390 static Term term;
391 static CSIEscape csiescseq;
392 static STREscape strescseq;
393 static int cmdfd;
394 static pid_t pid;
395 static Selection sel;
396 static int iofd = -1;
397 static char **opt_cmd = NULL;
398 static char *opt_io = NULL;
399 static char *opt_title = NULL;
400 static char *opt_embed = NULL;
401 static char *opt_class = NULL;
402 static char *opt_font = NULL;
403
404 static char *usedfont = NULL;
405 static int usedfontsize = 0;
406
407 ssize_t
408 xwrite(int fd, char *s, size_t len) {
409 size_t aux = len;
410
411 while(len > 0) {
412 ssize_t r = write(fd, s, len);
413 if(r < 0)
414 return r;
415 len -= r;
416 s += r;
417 }
418 return aux;
419 }
420
421 void *
422 xmalloc(size_t len) {
423 void *p = malloc(len);
424
425 if(!p)
426 die("Out of memory\n");
427
428 return p;
429 }
430
431 void *
432 xrealloc(void *p, size_t len) {
433 if((p = realloc(p, len)) == NULL)
434 die("Out of memory\n");
435
436 return p;
437 }
438
439 void *
440 xcalloc(size_t nmemb, size_t size) {
441 void *p = calloc(nmemb, size);
442
443 if(!p)
444 die("Out of memory\n");
445
446 return p;
447 }
448
449 int
450 utf8decode(char *s, long *u) {
451 uchar c;
452 int i, n, rtn;
453
454 rtn = 1;
455 c = *s;
456 if(~c & B7) { /* 0xxxxxxx */
457 *u = c;
458 return rtn;
459 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
460 *u = c&(B4|B3|B2|B1|B0);
461 n = 1;
462 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
463 *u = c&(B3|B2|B1|B0);
464 n = 2;
465 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
466 *u = c & (B2|B1|B0);
467 n = 3;
468 } else {
469 goto invalid;
470 }
471
472 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
473 c = *s;
474 if((c & (B7|B6)) != B7) /* 10xxxxxx */
475 goto invalid;
476 *u <<= 6;
477 *u |= c & (B5|B4|B3|B2|B1|B0);
478 }
479
480 if((n == 1 && *u < 0x80) ||
481 (n == 2 && *u < 0x800) ||
482 (n == 3 && *u < 0x10000) ||
483 (*u >= 0xD800 && *u <= 0xDFFF)) {
484 goto invalid;
485 }
486
487 return rtn;
488 invalid:
489 *u = 0xFFFD;
490
491 return rtn;
492 }
493
494 int
495 utf8encode(long *u, char *s) {
496 uchar *sp;
497 ulong uc;
498 int i, n;
499
500 sp = (uchar *)s;
501 uc = *u;
502 if(uc < 0x80) {
503 *sp = uc; /* 0xxxxxxx */
504 return 1;
505 } else if(*u < 0x800) {
506 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
507 n = 1;
508 } else if(uc < 0x10000) {
509 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
510 n = 2;
511 } else if(uc <= 0x10FFFF) {
512 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
513 n = 3;
514 } else {
515 goto invalid;
516 }
517
518 for(i=n,++sp; i>0; --i,++sp)
519 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
520
521 return n+1;
522 invalid:
523 /* U+FFFD */
524 *s++ = '\xEF';
525 *s++ = '\xBF';
526 *s = '\xBD';
527
528 return 3;
529 }
530
531 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
532 UTF-8 otherwise return 0 */
533 int
534 isfullutf8(char *s, int b) {
535 uchar *c1, *c2, *c3;
536
537 c1 = (uchar *)s;
538 c2 = (uchar *)++s;
539 c3 = (uchar *)++s;
540 if(b < 1) {
541 return 0;
542 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
543 return 0;
544 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
545 ((b == 1) ||
546 ((b == 2) && (*c2&(B7|B6)) == B7))) {
547 return 0;
548 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
549 ((b == 1) ||
550 ((b == 2) && (*c2&(B7|B6)) == B7) ||
551 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
552 return 0;
553 } else {
554 return 1;
555 }
556 }
557
558 int
559 utf8size(char *s) {
560 uchar c = *s;
561
562 if(~c&B7) {
563 return 1;
564 } else if((c&(B7|B6|B5)) == (B7|B6)) {
565 return 2;
566 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
567 return 3;
568 } else {
569 return 4;
570 }
571 }
572
573 void
574 selinit(void) {
575 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
576 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
577 sel.mode = 0;
578 sel.bx = -1;
579 sel.clip = NULL;
580 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
581 if(sel.xtarget == None)
582 sel.xtarget = XA_STRING;
583 }
584
585 static inline bool
586 selected(int x, int y) {
587 int bx, ex;
588
589 if(sel.ey == y && sel.by == y) {
590 bx = MIN(sel.bx, sel.ex);
591 ex = MAX(sel.bx, sel.ex);
592 return BETWEEN(x, bx, ex);
593 }
594
595 return ((sel.b.y < y && y < sel.e.y)
596 || (y == sel.e.y && x <= sel.e.x))
597 || (y == sel.b.y && x >= sel.b.x
598 && (x <= sel.e.x || sel.b.y != sel.e.y));
599 }
600
601 void
602 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
603 if(b)
604 *b = e->xbutton.button;
605
606 *x = X2COL(e->xbutton.x);
607 *y = Y2ROW(e->xbutton.y);
608 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
609 sel.b.y = MIN(sel.by, sel.ey);
610 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
611 sel.e.y = MAX(sel.by, sel.ey);
612 }
613
614 void
615 mousereport(XEvent *e) {
616 int x = X2COL(e->xbutton.x);
617 int y = Y2ROW(e->xbutton.y);
618 int button = e->xbutton.button;
619 int state = e->xbutton.state;
620 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
621 static int ob, ox, oy;
622
623 /* from urxvt */
624 if(e->xbutton.type == MotionNotify) {
625 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
626 return;
627 button = ob + 32;
628 ox = x, oy = y;
629 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
630 button = 3;
631 } else {
632 button -= Button1;
633 if(button >= 3)
634 button += 64 - 3;
635 if(e->xbutton.type == ButtonPress) {
636 ob = button;
637 ox = x, oy = y;
638 }
639 }
640
641 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
642 + (state & Mod4Mask ? 8 : 0)
643 + (state & ControlMask ? 16 : 0);
644
645 ttywrite(buf, sizeof(buf));
646 }
647
648 void
649 bpress(XEvent *e) {
650 if(IS_SET(MODE_MOUSE)) {
651 mousereport(e);
652 } else if(e->xbutton.button == Button1) {
653 if(sel.bx != -1) {
654 sel.bx = -1;
655 tsetdirt(sel.b.y, sel.e.y);
656 draw();
657 }
658 sel.mode = 1;
659 sel.ex = sel.bx = X2COL(e->xbutton.x);
660 sel.ey = sel.by = Y2ROW(e->xbutton.y);
661 }
662 }
663
664 void
665 selcopy(void) {
666 char *str, *ptr, *p;
667 int x, y, bufsize, is_selected = 0, size;
668 Glyph *gp, *last;
669
670 if(sel.bx == -1) {
671 str = NULL;
672 } else {
673 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
674 ptr = str = xmalloc(bufsize);
675
676 /* append every set & selected glyph to the selection */
677 for(y = 0; y < term.row; y++) {
678 gp = &term.line[y][0];
679 last = gp + term.col;
680
681 while(--last >= gp && !(last->state & GLYPH_SET))
682 /* nothing */;
683
684 for(x = 0; gp <= last; x++, ++gp) {
685 if(!(is_selected = selected(x, y)))
686 continue;
687
688 p = (gp->state & GLYPH_SET) ? gp->c : " ";
689 size = utf8size(p);
690 memcpy(ptr, p, size);
691 ptr += size;
692 }
693 /* \n at the end of every selected line except for the last one */
694 if(is_selected && y < sel.e.y)
695 *ptr++ = '\n';
696 }
697 *ptr = 0;
698 }
699 sel.alt = IS_SET(MODE_ALTSCREEN);
700 xsetsel(str);
701 }
702
703 void
704 selnotify(XEvent *e) {
705 ulong nitems, ofs, rem;
706 int format;
707 uchar *data;
708 Atom type;
709
710 ofs = 0;
711 do {
712 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
713 False, AnyPropertyType, &type, &format,
714 &nitems, &rem, &data)) {
715 fprintf(stderr, "Clipboard allocation failed\n");
716 return;
717 }
718 ttywrite((const char *) data, nitems * format / 8);
719 XFree(data);
720 /* number of 32-bit chunks returned */
721 ofs += nitems * format / 32;
722 } while(rem > 0);
723 }
724
725 void
726 selpaste(void) {
727 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
728 xw.win, CurrentTime);
729 }
730
731 void selclear(XEvent *e) {
732 if(sel.bx == -1)
733 return;
734 sel.bx = -1;
735 tsetdirt(sel.b.y, sel.e.y);
736 }
737
738 void
739 selrequest(XEvent *e) {
740 XSelectionRequestEvent *xsre;
741 XSelectionEvent xev;
742 Atom xa_targets, string;
743
744 xsre = (XSelectionRequestEvent *) e;
745 xev.type = SelectionNotify;
746 xev.requestor = xsre->requestor;
747 xev.selection = xsre->selection;
748 xev.target = xsre->target;
749 xev.time = xsre->time;
750 /* reject */
751 xev.property = None;
752
753 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
754 if(xsre->target == xa_targets) {
755 /* respond with the supported type */
756 string = sel.xtarget;
757 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
758 XA_ATOM, 32, PropModeReplace,
759 (uchar *) &string, 1);
760 xev.property = xsre->property;
761 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
762 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
763 xsre->target, 8, PropModeReplace,
764 (uchar *) sel.clip, strlen(sel.clip));
765 xev.property = xsre->property;
766 }
767
768 /* all done, send a notification to the listener */
769 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
770 fprintf(stderr, "Error sending SelectionNotify event\n");
771 }
772
773 void
774 xsetsel(char *str) {
775 /* register the selection for both the clipboard and the primary */
776 Atom clipboard;
777
778 free(sel.clip);
779 sel.clip = str;
780
781 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
782
783 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
784 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
785 }
786
787 void
788 brelease(XEvent *e) {
789 struct timeval now;
790
791 if(IS_SET(MODE_MOUSE)) {
792 mousereport(e);
793 return;
794 }
795
796 if(e->xbutton.button == Button2) {
797 selpaste();
798 } else if(e->xbutton.button == Button1) {
799 sel.mode = 0;
800 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
801 term.dirty[sel.ey] = 1;
802 if(sel.bx == sel.ex && sel.by == sel.ey) {
803 sel.bx = -1;
804 gettimeofday(&now, NULL);
805
806 if(TIMEDIFF(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
807 /* triple click on the line */
808 sel.b.x = sel.bx = 0;
809 sel.e.x = sel.ex = term.col;
810 sel.b.y = sel.e.y = sel.ey;
811 selcopy();
812 } else if(TIMEDIFF(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
813 /* double click to select word */
814 sel.bx = sel.ex;
815 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
816 term.line[sel.ey][sel.bx-1].c[0] != ' ') {
817 sel.bx--;
818 }
819 sel.b.x = sel.bx;
820 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
821 term.line[sel.ey][sel.ex+1].c[0] != ' ') {
822 sel.ex++;
823 }
824 sel.e.x = sel.ex;
825 sel.b.y = sel.e.y = sel.ey;
826 selcopy();
827 }
828 } else {
829 selcopy();
830 }
831 }
832
833 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
834 gettimeofday(&sel.tclick1, NULL);
835 }
836
837 void
838 bmotion(XEvent *e) {
839 int starty, endy, oldey, oldex;
840
841 if(IS_SET(MODE_MOUSE)) {
842 mousereport(e);
843 return;
844 }
845
846 if(sel.mode) {
847 oldey = sel.ey;
848 oldex = sel.ex;
849 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
850
851 if(oldey != sel.ey || oldex != sel.ex) {
852 starty = MIN(oldey, sel.ey);
853 endy = MAX(oldey, sel.ey);
854 tsetdirt(starty, endy);
855 }
856 }
857 }
858
859 void
860 die(const char *errstr, ...) {
861 va_list ap;
862
863 va_start(ap, errstr);
864 vfprintf(stderr, errstr, ap);
865 va_end(ap);
866 exit(EXIT_FAILURE);
867 }
868
869 void
870 execsh(void) {
871 char **args;
872 char *envshell = getenv("SHELL");
873 const struct passwd *pass = getpwuid(getuid());
874 char buf[sizeof(long) * 8 + 1];
875
876 unsetenv("COLUMNS");
877 unsetenv("LINES");
878 unsetenv("TERMCAP");
879
880 if(pass) {
881 setenv("LOGNAME", pass->pw_name, 1);
882 setenv("USER", pass->pw_name, 1);
883 setenv("SHELL", pass->pw_shell, 0);
884 setenv("HOME", pass->pw_dir, 0);
885 }
886
887 snprintf(buf, sizeof(buf), "%lu", xw.win);
888 setenv("WINDOWID", buf, 1);
889
890 signal(SIGCHLD, SIG_DFL);
891 signal(SIGHUP, SIG_DFL);
892 signal(SIGINT, SIG_DFL);
893 signal(SIGQUIT, SIG_DFL);
894 signal(SIGTERM, SIG_DFL);
895 signal(SIGALRM, SIG_DFL);
896
897 DEFAULT(envshell, SHELL);
898 putenv("TERM="TNAME);
899 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
900 execvp(args[0], args);
901 exit(EXIT_FAILURE);
902 }
903
904 void
905 sigchld(int a) {
906 int stat = 0;
907
908 if(waitpid(pid, &stat, 0) < 0)
909 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
910
911 if(WIFEXITED(stat)) {
912 exit(WEXITSTATUS(stat));
913 } else {
914 exit(EXIT_FAILURE);
915 }
916 }
917
918 void
919 ttynew(void) {
920 int m, s;
921 struct winsize w = {term.row, term.col, 0, 0};
922
923 /* seems to work fine on linux, openbsd and freebsd */
924 if(openpty(&m, &s, NULL, NULL, &w) < 0)
925 die("openpty failed: %s\n", SERRNO);
926
927 switch(pid = fork()) {
928 case -1:
929 die("fork failed\n");
930 break;
931 case 0:
932 setsid(); /* create a new process group */
933 dup2(s, STDIN_FILENO);
934 dup2(s, STDOUT_FILENO);
935 dup2(s, STDERR_FILENO);
936 if(ioctl(s, TIOCSCTTY, NULL) < 0)
937 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
938 close(s);
939 close(m);
940 execsh();
941 break;
942 default:
943 close(s);
944 cmdfd = m;
945 signal(SIGCHLD, sigchld);
946 if(opt_io) {
947 iofd = (!strcmp(opt_io, "-")) ?
948 STDOUT_FILENO :
949 open(opt_io, O_WRONLY | O_CREAT, 0666);
950 if(iofd < 0) {
951 fprintf(stderr, "Error opening %s:%s\n",
952 opt_io, strerror(errno));
953 }
954 }
955 }
956 }
957
958 void
959 dump(char c) {
960 static int col;
961
962 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
963 if(++col % 10 == 0)
964 fprintf(stderr, "\n");
965 }
966
967 void
968 ttyread(void) {
969 static char buf[BUFSIZ];
970 static int buflen = 0;
971 char *ptr;
972 char s[UTF_SIZ];
973 int charsize; /* size of utf8 char in bytes */
974 long utf8c;
975 int ret;
976
977 /* append read bytes to unprocessed bytes */
978 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
979 die("Couldn't read from shell: %s\n", SERRNO);
980
981 /* process every complete utf8 char */
982 buflen += ret;
983 ptr = buf;
984 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
985 charsize = utf8decode(ptr, &utf8c);
986 utf8encode(&utf8c, s);
987 tputc(s, charsize);
988 ptr += charsize;
989 buflen -= charsize;
990 }
991
992 /* keep any uncomplete utf8 char for the next call */
993 memmove(buf, ptr, buflen);
994 }
995
996 void
997 ttywrite(const char *s, size_t n) {
998 if(write(cmdfd, s, n) == -1)
999 die("write error on tty: %s\n", SERRNO);
1000 }
1001
1002 void
1003 ttyresize(void) {
1004 struct winsize w;
1005
1006 w.ws_row = term.row;
1007 w.ws_col = term.col;
1008 w.ws_xpixel = xw.tw;
1009 w.ws_ypixel = xw.th;
1010 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1011 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1012 }
1013
1014 void
1015 tsetdirt(int top, int bot) {
1016 int i;
1017
1018 LIMIT(top, 0, term.row-1);
1019 LIMIT(bot, 0, term.row-1);
1020
1021 for(i = top; i <= bot; i++)
1022 term.dirty[i] = 1;
1023 }
1024
1025 void
1026 tfulldirt(void) {
1027 tsetdirt(0, term.row-1);
1028 }
1029
1030 void
1031 tcursor(int mode) {
1032 static TCursor c;
1033
1034 if(mode == CURSOR_SAVE) {
1035 c = term.c;
1036 } else if(mode == CURSOR_LOAD) {
1037 term.c = c;
1038 tmoveto(c.x, c.y);
1039 }
1040 }
1041
1042 void
1043 treset(void) {
1044 uint i;
1045
1046 term.c = (TCursor){{
1047 .mode = ATTR_NULL,
1048 .fg = DefaultFG,
1049 .bg = DefaultBG
1050 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1051
1052 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1053 for(i = TAB; i < term.col; i += TAB)
1054 term.tabs[i] = 1;
1055 term.top = 0;
1056 term.bot = term.row - 1;
1057 term.mode = MODE_WRAP;
1058
1059 tclearregion(0, 0, term.col-1, term.row-1);
1060 }
1061
1062 void
1063 tnew(int col, int row) {
1064 /* set screen size */
1065 term.row = row;
1066 term.col = col;
1067 term.line = xmalloc(term.row * sizeof(Line));
1068 term.alt = xmalloc(term.row * sizeof(Line));
1069 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
1070 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
1071
1072 for(row = 0; row < term.row; row++) {
1073 term.line[row] = xmalloc(term.col * sizeof(Glyph));
1074 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
1075 term.dirty[row] = 0;
1076 }
1077 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1078 /* setup screen */
1079 treset();
1080 }
1081
1082 void
1083 tswapscreen(void) {
1084 Line *tmp = term.line;
1085
1086 term.line = term.alt;
1087 term.alt = tmp;
1088 term.mode ^= MODE_ALTSCREEN;
1089 tfulldirt();
1090 }
1091
1092 void
1093 tscrolldown(int orig, int n) {
1094 int i;
1095 Line temp;
1096
1097 LIMIT(n, 0, term.bot-orig+1);
1098
1099 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1100
1101 for(i = term.bot; i >= orig+n; i--) {
1102 temp = term.line[i];
1103 term.line[i] = term.line[i-n];
1104 term.line[i-n] = temp;
1105
1106 term.dirty[i] = 1;
1107 term.dirty[i-n] = 1;
1108 }
1109
1110 selscroll(orig, n);
1111 }
1112
1113 void
1114 tscrollup(int orig, int n) {
1115 int i;
1116 Line temp;
1117 LIMIT(n, 0, term.bot-orig+1);
1118
1119 tclearregion(0, orig, term.col-1, orig+n-1);
1120
1121 for(i = orig; i <= term.bot-n; i++) {
1122 temp = term.line[i];
1123 term.line[i] = term.line[i+n];
1124 term.line[i+n] = temp;
1125
1126 term.dirty[i] = 1;
1127 term.dirty[i+n] = 1;
1128 }
1129
1130 selscroll(orig, -n);
1131 }
1132
1133 void
1134 selscroll(int orig, int n) {
1135 if(sel.bx == -1)
1136 return;
1137
1138 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1139 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1140 sel.bx = -1;
1141 return;
1142 }
1143 if(sel.by < term.top) {
1144 sel.by = term.top;
1145 sel.bx = 0;
1146 }
1147 if(sel.ey > term.bot) {
1148 sel.ey = term.bot;
1149 sel.ex = term.col;
1150 }
1151 sel.b.y = sel.by, sel.b.x = sel.bx;
1152 sel.e.y = sel.ey, sel.e.x = sel.ex;
1153 }
1154 }
1155
1156 void
1157 tnewline(int first_col) {
1158 int y = term.c.y;
1159
1160 if(y == term.bot) {
1161 tscrollup(term.top, 1);
1162 } else {
1163 y++;
1164 }
1165 tmoveto(first_col ? 0 : term.c.x, y);
1166 }
1167
1168 void
1169 csiparse(void) {
1170 /* int noarg = 1; */
1171 char *p = csiescseq.buf;
1172
1173 csiescseq.narg = 0;
1174 if(*p == '?')
1175 csiescseq.priv = 1, p++;
1176
1177 while(p < csiescseq.buf+csiescseq.len) {
1178 while(isdigit(*p)) {
1179 csiescseq.arg[csiescseq.narg] *= 10;
1180 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1181 }
1182 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ) {
1183 csiescseq.narg++, p++;
1184 } else {
1185 csiescseq.mode = *p;
1186 csiescseq.narg++;
1187
1188 return;
1189 }
1190 }
1191 }
1192
1193 void
1194 tmoveto(int x, int y) {
1195 LIMIT(x, 0, term.col-1);
1196 LIMIT(y, 0, term.row-1);
1197 term.c.state &= ~CURSOR_WRAPNEXT;
1198 term.c.x = x;
1199 term.c.y = y;
1200 }
1201
1202 void
1203 tsetchar(char *c, Glyph *attr, int x, int y) {
1204 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1205 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1206 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1207 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1208 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1209 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1210 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1211 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1212 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1213 };
1214
1215 /*
1216 * The table is proudly stolen from rxvt.
1217 */
1218 if(attr->mode & ATTR_GFX) {
1219 if(c[0] >= 0x41 && c[0] <= 0x7e
1220 && vt100_0[c[0] - 0x41]) {
1221 c = vt100_0[c[0] - 0x41];
1222 }
1223 }
1224
1225 term.dirty[y] = 1;
1226 term.line[y][x] = *attr;
1227 memcpy(term.line[y][x].c, c, UTF_SIZ);
1228 term.line[y][x].state |= GLYPH_SET;
1229 }
1230
1231 void
1232 tclearregion(int x1, int y1, int x2, int y2) {
1233 int x, y, temp;
1234
1235 if(x1 > x2)
1236 temp = x1, x1 = x2, x2 = temp;
1237 if(y1 > y2)
1238 temp = y1, y1 = y2, y2 = temp;
1239
1240 LIMIT(x1, 0, term.col-1);
1241 LIMIT(x2, 0, term.col-1);
1242 LIMIT(y1, 0, term.row-1);
1243 LIMIT(y2, 0, term.row-1);
1244
1245 for(y = y1; y <= y2; y++) {
1246 term.dirty[y] = 1;
1247 for(x = x1; x <= x2; x++)
1248 term.line[y][x].state = 0;
1249 }
1250 }
1251
1252 void
1253 tdeletechar(int n) {
1254 int src = term.c.x + n;
1255 int dst = term.c.x;
1256 int size = term.col - src;
1257
1258 term.dirty[term.c.y] = 1;
1259
1260 if(src >= term.col) {
1261 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1262 return;
1263 }
1264
1265 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1266 size * sizeof(Glyph));
1267 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1268 }
1269
1270 void
1271 tinsertblank(int n) {
1272 int src = term.c.x;
1273 int dst = src + n;
1274 int size = term.col - dst;
1275
1276 term.dirty[term.c.y] = 1;
1277
1278 if(dst >= term.col) {
1279 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1280 return;
1281 }
1282
1283 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1284 size * sizeof(Glyph));
1285 tclearregion(src, term.c.y, dst - 1, term.c.y);
1286 }
1287
1288 void
1289 tinsertblankline(int n) {
1290 if(term.c.y < term.top || term.c.y > term.bot)
1291 return;
1292
1293 tscrolldown(term.c.y, n);
1294 }
1295
1296 void
1297 tdeleteline(int n) {
1298 if(term.c.y < term.top || term.c.y > term.bot)
1299 return;
1300
1301 tscrollup(term.c.y, n);
1302 }
1303
1304 void
1305 tsetattr(int *attr, int l) {
1306 int i;
1307
1308 for(i = 0; i < l; i++) {
1309 switch(attr[i]) {
1310 case 0:
1311 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1312 | ATTR_ITALIC | ATTR_BLINK);
1313 term.c.attr.fg = DefaultFG;
1314 term.c.attr.bg = DefaultBG;
1315 break;
1316 case 1:
1317 term.c.attr.mode |= ATTR_BOLD;
1318 break;
1319 case 3: /* enter standout (highlight) */
1320 term.c.attr.mode |= ATTR_ITALIC;
1321 break;
1322 case 4:
1323 term.c.attr.mode |= ATTR_UNDERLINE;
1324 break;
1325 case 5:
1326 term.c.attr.mode |= ATTR_BLINK;
1327 break;
1328 case 7:
1329 term.c.attr.mode |= ATTR_REVERSE;
1330 break;
1331 case 21:
1332 case 22:
1333 term.c.attr.mode &= ~ATTR_BOLD;
1334 break;
1335 case 23: /* leave standout (highlight) mode */
1336 term.c.attr.mode &= ~ATTR_ITALIC;
1337 break;
1338 case 24:
1339 term.c.attr.mode &= ~ATTR_UNDERLINE;
1340 break;
1341 case 25:
1342 term.c.attr.mode &= ~ATTR_BLINK;
1343 break;
1344 case 27:
1345 term.c.attr.mode &= ~ATTR_REVERSE;
1346 break;
1347 case 38:
1348 if(i + 2 < l && attr[i + 1] == 5) {
1349 i += 2;
1350 if(BETWEEN(attr[i], 0, 255)) {
1351 term.c.attr.fg = attr[i];
1352 } else {
1353 fprintf(stderr,
1354 "erresc: bad fgcolor %d\n",
1355 attr[i]);
1356 }
1357 } else {
1358 fprintf(stderr,
1359 "erresc(38): gfx attr %d unknown\n",
1360 attr[i]);
1361 }
1362 break;
1363 case 39:
1364 term.c.attr.fg = DefaultFG;
1365 break;
1366 case 48:
1367 if(i + 2 < l && attr[i + 1] == 5) {
1368 i += 2;
1369 if(BETWEEN(attr[i], 0, 255)) {
1370 term.c.attr.bg = attr[i];
1371 } else {
1372 fprintf(stderr,
1373 "erresc: bad bgcolor %d\n",
1374 attr[i]);
1375 }
1376 } else {
1377 fprintf(stderr,
1378 "erresc(48): gfx attr %d unknown\n",
1379 attr[i]);
1380 }
1381 break;
1382 case 49:
1383 term.c.attr.bg = DefaultBG;
1384 break;
1385 default:
1386 if(BETWEEN(attr[i], 30, 37)) {
1387 term.c.attr.fg = attr[i] - 30;
1388 } else if(BETWEEN(attr[i], 40, 47)) {
1389 term.c.attr.bg = attr[i] - 40;
1390 } else if(BETWEEN(attr[i], 90, 97)) {
1391 term.c.attr.fg = attr[i] - 90 + 8;
1392 } else if(BETWEEN(attr[i], 100, 107)) {
1393 term.c.attr.bg = attr[i] - 100 + 8;
1394 } else {
1395 fprintf(stderr,
1396 "erresc(default): gfx attr %d unknown\n",
1397 attr[i]), csidump();
1398 }
1399 break;
1400 }
1401 }
1402 }
1403
1404 void
1405 tsetscroll(int t, int b) {
1406 int temp;
1407
1408 LIMIT(t, 0, term.row-1);
1409 LIMIT(b, 0, term.row-1);
1410 if(t > b) {
1411 temp = t;
1412 t = b;
1413 b = temp;
1414 }
1415 term.top = t;
1416 term.bot = b;
1417 }
1418
1419 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1420
1421 void
1422 tsetmode(bool priv, bool set, int *args, int narg) {
1423 int *lim, mode;
1424
1425 for(lim = args + narg; args < lim; ++args) {
1426 if(priv) {
1427 switch(*args) {
1428 break;
1429 case 1: /* DECCKM -- Cursor key */
1430 MODBIT(term.mode, set, MODE_APPKEYPAD);
1431 break;
1432 case 5: /* DECSCNM -- Reverse video */
1433 mode = term.mode;
1434 MODBIT(term.mode, set, MODE_REVERSE);
1435 if(mode != term.mode)
1436 redraw();
1437 break;
1438 case 6: /* XXX: DECOM -- Origin */
1439 break;
1440 case 7: /* DECAWM -- Auto wrap */
1441 MODBIT(term.mode, set, MODE_WRAP);
1442 break;
1443 case 8: /* XXX: DECARM -- Auto repeat */
1444 break;
1445 case 0: /* Error (IGNORED) */
1446 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1447 break;
1448 case 25:
1449 MODBIT(term.c.state, !set, CURSOR_HIDE);
1450 break;
1451 case 1000: /* 1000,1002: enable xterm mouse report */
1452 MODBIT(term.mode, set, MODE_MOUSEBTN);
1453 break;
1454 case 1002:
1455 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1456 break;
1457 case 1049: /* = 1047 and 1048 */
1458 case 47:
1459 case 1047:
1460 if(IS_SET(MODE_ALTSCREEN))
1461 tclearregion(0, 0, term.col-1, term.row-1);
1462 if((set && !IS_SET(MODE_ALTSCREEN)) ||
1463 (!set && IS_SET(MODE_ALTSCREEN))) {
1464 tswapscreen();
1465 }
1466 if(*args != 1049)
1467 break;
1468 /* pass through */
1469 case 1048:
1470 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1471 break;
1472 default:
1473 /* case 2: DECANM -- ANSI/VT52 (NOT SUPPOURTED) */
1474 /* case 3: DECCOLM -- Column (NOT SUPPORTED) */
1475 /* case 4: DECSCLM -- Scroll (NOT SUPPORTED) */
1476 /* case 18: DECPFF -- Printer feed (NOT SUPPORTED) */
1477 /* case 19: DECPEX -- Printer extent (NOT SUPPORTED) */
1478 /* case 42: DECNRCM -- National characters (NOT SUPPORTED) */
1479 fprintf(stderr,
1480 "erresc: unknown private set/reset mode %d\n",
1481 *args);
1482 break;
1483 }
1484 } else {
1485 switch(*args) {
1486 case 0: /* Error (IGNORED) */
1487 break;
1488 case 2: /* KAM -- keyboard action */
1489 MODBIT(term.mode, set, MODE_KBDLOCK);
1490 break;
1491 case 4: /* IRM -- Insertion-replacement */
1492 MODBIT(term.mode, set, MODE_INSERT);
1493 break;
1494 case 12: /* XXX: SRM -- Send/Receive */
1495 break;
1496 case 20: /* LNM -- Linefeed/new line */
1497 MODBIT(term.mode, set, MODE_CRLF);
1498 break;
1499 default:
1500 fprintf(stderr,
1501 "erresc: unknown set/reset mode %d\n",
1502 *args);
1503 break;
1504 }
1505 }
1506 }
1507 }
1508 #undef MODBIT
1509
1510
1511 void
1512 csihandle(void) {
1513 switch(csiescseq.mode) {
1514 default:
1515 unknown:
1516 fprintf(stderr, "erresc: unknown csi ");
1517 csidump();
1518 /* die(""); */
1519 break;
1520 case '@': /* ICH -- Insert <n> blank char */
1521 DEFAULT(csiescseq.arg[0], 1);
1522 tinsertblank(csiescseq.arg[0]);
1523 break;
1524 case 'A': /* CUU -- Cursor <n> Up */
1525 case 'e':
1526 DEFAULT(csiescseq.arg[0], 1);
1527 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1528 break;
1529 case 'B': /* CUD -- Cursor <n> Down */
1530 DEFAULT(csiescseq.arg[0], 1);
1531 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1532 break;
1533 case 'c': /* DA -- Device Attributes */
1534 if(csiescseq.arg[0] == 0)
1535 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1536 break;
1537 case 'C': /* CUF -- Cursor <n> Forward */
1538 case 'a':
1539 DEFAULT(csiescseq.arg[0], 1);
1540 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1541 break;
1542 case 'D': /* CUB -- Cursor <n> Backward */
1543 DEFAULT(csiescseq.arg[0], 1);
1544 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1545 break;
1546 case 'E': /* CNL -- Cursor <n> Down and first col */
1547 DEFAULT(csiescseq.arg[0], 1);
1548 tmoveto(0, term.c.y+csiescseq.arg[0]);
1549 break;
1550 case 'F': /* CPL -- Cursor <n> Up and first col */
1551 DEFAULT(csiescseq.arg[0], 1);
1552 tmoveto(0, term.c.y-csiescseq.arg[0]);
1553 break;
1554 case 'g': /* TBC -- Tabulation clear */
1555 switch (csiescseq.arg[0]) {
1556 case 0: /* clear current tab stop */
1557 term.tabs[term.c.x] = 0;
1558 break;
1559 case 3: /* clear all the tabs */
1560 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1561 break;
1562 default:
1563 goto unknown;
1564 }
1565 break;
1566 case 'G': /* CHA -- Move to <col> */
1567 case '`': /* HPA */
1568 DEFAULT(csiescseq.arg[0], 1);
1569 tmoveto(csiescseq.arg[0]-1, term.c.y);
1570 break;
1571 case 'H': /* CUP -- Move to <row> <col> */
1572 case 'f': /* HVP */
1573 DEFAULT(csiescseq.arg[0], 1);
1574 DEFAULT(csiescseq.arg[1], 1);
1575 tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1576 break;
1577 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1578 DEFAULT(csiescseq.arg[0], 1);
1579 while(csiescseq.arg[0]--)
1580 tputtab(1);
1581 break;
1582 case 'J': /* ED -- Clear screen */
1583 sel.bx = -1;
1584 switch(csiescseq.arg[0]) {
1585 case 0: /* below */
1586 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1587 if(term.c.y < term.row-1)
1588 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1589 break;
1590 case 1: /* above */
1591 if(term.c.y > 1)
1592 tclearregion(0, 0, term.col-1, term.c.y-1);
1593 tclearregion(0, term.c.y, term.c.x, term.c.y);
1594 break;
1595 case 2: /* all */
1596 tclearregion(0, 0, term.col-1, term.row-1);
1597 break;
1598 default:
1599 goto unknown;
1600 }
1601 break;
1602 case 'K': /* EL -- Clear line */
1603 switch(csiescseq.arg[0]) {
1604 case 0: /* right */
1605 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1606 break;
1607 case 1: /* left */
1608 tclearregion(0, term.c.y, term.c.x, term.c.y);
1609 break;
1610 case 2: /* all */
1611 tclearregion(0, term.c.y, term.col-1, term.c.y);
1612 break;
1613 }
1614 break;
1615 case 'S': /* SU -- Scroll <n> line up */
1616 DEFAULT(csiescseq.arg[0], 1);
1617 tscrollup(term.top, csiescseq.arg[0]);
1618 break;
1619 case 'T': /* SD -- Scroll <n> line down */
1620 DEFAULT(csiescseq.arg[0], 1);
1621 tscrolldown(term.top, csiescseq.arg[0]);
1622 break;
1623 case 'L': /* IL -- Insert <n> blank lines */
1624 DEFAULT(csiescseq.arg[0], 1);
1625 tinsertblankline(csiescseq.arg[0]);
1626 break;
1627 case 'l': /* RM -- Reset Mode */
1628 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1629 break;
1630 case 'M': /* DL -- Delete <n> lines */
1631 DEFAULT(csiescseq.arg[0], 1);
1632 tdeleteline(csiescseq.arg[0]);
1633 break;
1634 case 'X': /* ECH -- Erase <n> char */
1635 DEFAULT(csiescseq.arg[0], 1);
1636 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1637 break;
1638 case 'P': /* DCH -- Delete <n> char */
1639 DEFAULT(csiescseq.arg[0], 1);
1640 tdeletechar(csiescseq.arg[0]);
1641 break;
1642 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1643 DEFAULT(csiescseq.arg[0], 1);
1644 while(csiescseq.arg[0]--)
1645 tputtab(0);
1646 break;
1647 case 'd': /* VPA -- Move to <row> */
1648 DEFAULT(csiescseq.arg[0], 1);
1649 tmoveto(term.c.x, csiescseq.arg[0]-1);
1650 break;
1651 case 'h': /* SM -- Set terminal mode */
1652 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1653 break;
1654 case 'm': /* SGR -- Terminal attribute (color) */
1655 tsetattr(csiescseq.arg, csiescseq.narg);
1656 break;
1657 case 'r': /* DECSTBM -- Set Scrolling Region */
1658 if(csiescseq.priv) {
1659 goto unknown;
1660 } else {
1661 DEFAULT(csiescseq.arg[0], 1);
1662 DEFAULT(csiescseq.arg[1], term.row);
1663 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1664 tmoveto(0, 0);
1665 }
1666 break;
1667 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1668 tcursor(CURSOR_SAVE);
1669 break;
1670 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1671 tcursor(CURSOR_LOAD);
1672 break;
1673 }
1674 }
1675
1676 void
1677 csidump(void) {
1678 int i;
1679 uint c;
1680
1681 printf("ESC[");
1682 for(i = 0; i < csiescseq.len; i++) {
1683 c = csiescseq.buf[i] & 0xff;
1684 if(isprint(c)) {
1685 putchar(c);
1686 } else if(c == '\n') {
1687 printf("(\\n)");
1688 } else if(c == '\r') {
1689 printf("(\\r)");
1690 } else if(c == 0x1b) {
1691 printf("(\\e)");
1692 } else {
1693 printf("(%02x)", c);
1694 }
1695 }
1696 putchar('\n');
1697 }
1698
1699 void
1700 csireset(void) {
1701 memset(&csiescseq, 0, sizeof(csiescseq));
1702 }
1703
1704 void
1705 strhandle(void) {
1706 char *p;
1707
1708 /*
1709 * TODO: make this being useful in case of color palette change.
1710 */
1711 strparse();
1712
1713 p = strescseq.buf;
1714
1715 switch(strescseq.type) {
1716 case ']': /* OSC -- Operating System Command */
1717 switch(p[0]) {
1718 case '0':
1719 case '1':
1720 case '2':
1721 /*
1722 * TODO: Handle special chars in string, like umlauts.
1723 */
1724 if(p[1] == ';') {
1725 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1726 }
1727 break;
1728 case ';':
1729 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1730 break;
1731 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1732 break;
1733 default:
1734 fprintf(stderr, "erresc: unknown str ");
1735 strdump();
1736 break;
1737 }
1738 break;
1739 case 'k': /* old title set compatibility */
1740 XStoreName(xw.dpy, xw.win, strescseq.buf);
1741 break;
1742 case 'P': /* DSC -- Device Control String */
1743 case '_': /* APC -- Application Program Command */
1744 case '^': /* PM -- Privacy Message */
1745 default:
1746 fprintf(stderr, "erresc: unknown str ");
1747 strdump();
1748 /* die(""); */
1749 break;
1750 }
1751 }
1752
1753 void
1754 strparse(void) {
1755 /*
1756 * TODO: Implement parsing like for CSI when required.
1757 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1758 */
1759 return;
1760 }
1761
1762 void
1763 strdump(void) {
1764 int i;
1765 uint c;
1766
1767 printf("ESC%c", strescseq.type);
1768 for(i = 0; i < strescseq.len; i++) {
1769 c = strescseq.buf[i] & 0xff;
1770 if(isprint(c)) {
1771 putchar(c);
1772 } else if(c == '\n') {
1773 printf("(\\n)");
1774 } else if(c == '\r') {
1775 printf("(\\r)");
1776 } else if(c == 0x1b) {
1777 printf("(\\e)");
1778 } else {
1779 printf("(%02x)", c);
1780 }
1781 }
1782 printf("ESC\\\n");
1783 }
1784
1785 void
1786 strreset(void) {
1787 memset(&strescseq, 0, sizeof(strescseq));
1788 }
1789
1790 void
1791 tputtab(bool forward) {
1792 uint x = term.c.x;
1793
1794 if(forward) {
1795 if(x == term.col)
1796 return;
1797 for(++x; x < term.col && !term.tabs[x]; ++x)
1798 /* nothing */ ;
1799 } else {
1800 if(x == 0)
1801 return;
1802 for(--x; x > 0 && !term.tabs[x]; --x)
1803 /* nothing */ ;
1804 }
1805 tmoveto(x, term.c.y);
1806 }
1807
1808 void
1809 tputc(char *c, int len) {
1810 uchar ascii = *c;
1811 bool control = ascii < '\x20' || ascii == 0177;
1812
1813 if(iofd != -1) {
1814 if (xwrite(iofd, c, len) < 0) {
1815 fprintf(stderr, "Error writting in %s:%s\n",
1816 opt_io, strerror(errno));
1817 close(iofd);
1818 iofd = -1;
1819 }
1820 }
1821 /*
1822 * STR sequences must be checked before of anything
1823 * because it can use some control codes as part of the sequence
1824 */
1825 if(term.esc & ESC_STR) {
1826 switch(ascii) {
1827 case '\033':
1828 term.esc = ESC_START | ESC_STR_END;
1829 break;
1830 case '\a': /* backwards compatibility to xterm */
1831 term.esc = 0;
1832 strhandle();
1833 break;
1834 default:
1835 strescseq.buf[strescseq.len++] = ascii;
1836 if(strescseq.len+1 >= STR_BUF_SIZ) {
1837 term.esc = 0;
1838 strhandle();
1839 }
1840 }
1841 return;
1842 }
1843 /*
1844 * Actions of control codes must be performed as soon they arrive
1845 * because they can be embedded inside a control sequence, and
1846 * they must not cause conflicts with sequences.
1847 */
1848 if(control) {
1849 switch(ascii) {
1850 case '\t': /* HT */
1851 tputtab(1);
1852 return;
1853 case '\b': /* BS */
1854 tmoveto(term.c.x-1, term.c.y);
1855 return;
1856 case '\r': /* CR */
1857 tmoveto(0, term.c.y);
1858 return;
1859 case '\f': /* LF */
1860 case '\v': /* VT */
1861 case '\n': /* LF */
1862 /* go to first col if the mode is set */
1863 tnewline(IS_SET(MODE_CRLF));
1864 return;
1865 case '\a': /* BEL */
1866 if(!(xw.state & WIN_FOCUSED))
1867 xseturgency(1);
1868 return;
1869 case '\033': /* ESC */
1870 csireset();
1871 term.esc = ESC_START;
1872 return;
1873 case '\016': /* SO */
1874 term.c.attr.mode |= ATTR_GFX;
1875 return;
1876 case '\017': /* SI */
1877 term.c.attr.mode &= ~ATTR_GFX;
1878 return;
1879 case '\032': /* SUB */
1880 case '\030': /* CAN */
1881 csireset();
1882 return;
1883 case '\005': /* ENQ (IGNORED) */
1884 case '\000': /* NUL (IGNORED) */
1885 case '\021': /* XON (IGNORED) */
1886 case '\023': /* XOFF (IGNORED) */
1887 case 0177: /* DEL (IGNORED) */
1888 return;
1889 }
1890 } else if(term.esc & ESC_START) {
1891 if(term.esc & ESC_CSI) {
1892 csiescseq.buf[csiescseq.len++] = ascii;
1893 if(BETWEEN(ascii, 0x40, 0x7E)
1894 || csiescseq.len >= ESC_BUF_SIZ) {
1895 term.esc = 0;
1896 csiparse(), csihandle();
1897 }
1898 } else if(term.esc & ESC_STR_END) {
1899 term.esc = 0;
1900 if(ascii == '\\')
1901 strhandle();
1902 } else if(term.esc & ESC_ALTCHARSET) {
1903 switch(ascii) {
1904 case '0': /* Line drawing set */
1905 term.c.attr.mode |= ATTR_GFX;
1906 break;
1907 case 'B': /* USASCII */
1908 term.c.attr.mode &= ~ATTR_GFX;
1909 break;
1910 case 'A': /* UK (IGNORED) */
1911 case '<': /* multinational charset (IGNORED) */
1912 case '5': /* Finnish (IGNORED) */
1913 case 'C': /* Finnish (IGNORED) */
1914 case 'K': /* German (IGNORED) */
1915 break;
1916 default:
1917 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1918 }
1919 term.esc = 0;
1920 } else if(term.esc & ESC_TEST) {
1921 if(ascii == '8') { /* DEC screen alignment test. */
1922 char E[UTF_SIZ] = "E";
1923 int x, y;
1924
1925 for(x = 0; x < term.col; ++x) {
1926 for(y = 0; y < term.row; ++y)
1927 tsetchar(E, &term.c.attr, x, y);
1928 }
1929 }
1930 term.esc = 0;
1931 } else {
1932 switch(ascii) {
1933 case '[':
1934 term.esc |= ESC_CSI;
1935 break;
1936 case '#':
1937 term.esc |= ESC_TEST;
1938 break;
1939 case 'P': /* DCS -- Device Control String */
1940 case '_': /* APC -- Application Program Command */
1941 case '^': /* PM -- Privacy Message */
1942 case ']': /* OSC -- Operating System Command */
1943 case 'k': /* old title set compatibility */
1944 strreset();
1945 strescseq.type = ascii;
1946 term.esc |= ESC_STR;
1947 break;
1948 case '(': /* set primary charset G0 */
1949 term.esc |= ESC_ALTCHARSET;
1950 break;
1951 case ')': /* set secondary charset G1 (IGNORED) */
1952 case '*': /* set tertiary charset G2 (IGNORED) */
1953 case '+': /* set quaternary charset G3 (IGNORED) */
1954 term.esc = 0;
1955 break;
1956 case 'D': /* IND -- Linefeed */
1957 if(term.c.y == term.bot) {
1958 tscrollup(term.top, 1);
1959 } else {
1960 tmoveto(term.c.x, term.c.y+1);
1961 }
1962 term.esc = 0;
1963 break;
1964 case 'E': /* NEL -- Next line */
1965 tnewline(1); /* always go to first col */
1966 term.esc = 0;
1967 break;
1968 case 'H': /* HTS -- Horizontal tab stop */
1969 term.tabs[term.c.x] = 1;
1970 term.esc = 0;
1971 break;
1972 case 'M': /* RI -- Reverse index */
1973 if(term.c.y == term.top) {
1974 tscrolldown(term.top, 1);
1975 } else {
1976 tmoveto(term.c.x, term.c.y-1);
1977 }
1978 term.esc = 0;
1979 break;
1980 case 'Z': /* DECID -- Identify Terminal */
1981 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1982 term.esc = 0;
1983 break;
1984 case 'c': /* RIS -- Reset to inital state */
1985 treset();
1986 term.esc = 0;
1987 xresettitle();
1988 break;
1989 case '=': /* DECPAM -- Application keypad */
1990 term.mode |= MODE_APPKEYPAD;
1991 term.esc = 0;
1992 break;
1993 case '>': /* DECPNM -- Normal keypad */
1994 term.mode &= ~MODE_APPKEYPAD;
1995 term.esc = 0;
1996 break;
1997 case '7': /* DECSC -- Save Cursor */
1998 tcursor(CURSOR_SAVE);
1999 term.esc = 0;
2000 break;
2001 case '8': /* DECRC -- Restore Cursor */
2002 tcursor(CURSOR_LOAD);
2003 term.esc = 0;
2004 break;
2005 case '\\': /* ST -- Stop */
2006 term.esc = 0;
2007 break;
2008 default:
2009 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2010 (uchar) ascii, isprint(ascii)? ascii:'.');
2011 term.esc = 0;
2012 }
2013 }
2014 /*
2015 * All characters which forms part of a sequence are not
2016 * printed
2017 */
2018 return;
2019 }
2020 /*
2021 * Display control codes only if we are in graphic mode
2022 */
2023 if(control && !(term.c.attr.mode & ATTR_GFX))
2024 return;
2025 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2026 sel.bx = -1;
2027 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
2028 tnewline(1); /* always go to first col */
2029 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2030 if(term.c.x+1 < term.col)
2031 tmoveto(term.c.x+1, term.c.y);
2032 else
2033 term.c.state |= CURSOR_WRAPNEXT;
2034 }
2035
2036 int
2037 tresize(int col, int row) {
2038 int i, x;
2039 int minrow = MIN(row, term.row);
2040 int mincol = MIN(col, term.col);
2041 int slide = term.c.y - row + 1;
2042 bool *bp;
2043
2044 if(col < 1 || row < 1)
2045 return 0;
2046
2047 /* free unneeded rows */
2048 i = 0;
2049 if(slide > 0) {
2050 /* slide screen to keep cursor where we expect it -
2051 * tscrollup would work here, but we can optimize to
2052 * memmove because we're freeing the earlier lines */
2053 for(/* i = 0 */; i < slide; i++) {
2054 free(term.line[i]);
2055 free(term.alt[i]);
2056 }
2057 memmove(term.line, term.line + slide, row * sizeof(Line));
2058 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2059 }
2060 for(i += row; i < term.row; i++) {
2061 free(term.line[i]);
2062 free(term.alt[i]);
2063 }
2064
2065 /* resize to new height */
2066 term.line = xrealloc(term.line, row * sizeof(Line));
2067 term.alt = xrealloc(term.alt, row * sizeof(Line));
2068 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2069 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2070
2071 /* resize each row to new width, zero-pad if needed */
2072 for(i = 0; i < minrow; i++) {
2073 term.dirty[i] = 1;
2074 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2075 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2076 for(x = mincol; x < col; x++) {
2077 term.line[i][x].state = 0;
2078 term.alt[i][x].state = 0;
2079 }
2080 }
2081
2082 /* allocate any new rows */
2083 for(/* i == minrow */; i < row; i++) {
2084 term.dirty[i] = 1;
2085 term.line[i] = xcalloc(col, sizeof(Glyph));
2086 term.alt [i] = xcalloc(col, sizeof(Glyph));
2087 }
2088 if(col > term.col) {
2089 bp = term.tabs + term.col;
2090
2091 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2092 while(--bp > term.tabs && !*bp)
2093 /* nothing */ ;
2094 for(bp += TAB; bp < term.tabs + col; bp += TAB)
2095 *bp = 1;
2096 }
2097 /* update terminal size */
2098 term.col = col;
2099 term.row = row;
2100 /* make use of the LIMIT in tmoveto */
2101 tmoveto(term.c.x, term.c.y);
2102 /* reset scrolling region */
2103 tsetscroll(0, row-1);
2104
2105 return (slide > 0);
2106 }
2107
2108 void
2109 xresize(int col, int row) {
2110 xw.tw = MAX(1, 2*BORDER + col * xw.cw);
2111 xw.th = MAX(1, 2*BORDER + row * xw.ch);
2112
2113 XftDrawChange(xw.xft_draw, xw.buf);
2114 }
2115
2116 void
2117 xloadcols(void) {
2118 int i, r, g, b;
2119 XRenderColor xft_color = { .alpha = 0 };
2120
2121 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2122 for(i = 0; i < LEN(colorname); i++) {
2123 if(!colorname[i])
2124 continue;
2125 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.xft_col[i])) {
2126 die("Could not allocate color '%s'\n", colorname[i]);
2127 }
2128 }
2129
2130 /* load colors [16-255] ; same colors as xterm */
2131 for(i = 16, r = 0; r < 6; r++) {
2132 for(g = 0; g < 6; g++) {
2133 for(b = 0; b < 6; b++) {
2134 xft_color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
2135 xft_color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
2136 xft_color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
2137 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color, &dc.xft_col[i])) {
2138 die("Could not allocate color %d\n", i);
2139 }
2140 i++;
2141 }
2142 }
2143 }
2144
2145 for(r = 0; r < 24; r++, i++) {
2146 xft_color.red = xft_color.green = xft_color.blue = 0x0808 + 0x0a0a * r;
2147 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color,
2148 &dc.xft_col[i])) {
2149 die("Could not allocate color %d\n", i);
2150 }
2151 }
2152 }
2153
2154 void
2155 xtermclear(int col1, int row1, int col2, int row2) {
2156 XftDrawRect(xw.xft_draw,
2157 &dc.xft_col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG],
2158 BORDER + col1 * xw.cw,
2159 BORDER + row1 * xw.ch,
2160 (col2-col1+1) * xw.cw,
2161 (row2-row1+1) * xw.ch);
2162 }
2163
2164 /*
2165 * Absolute coordinates.
2166 */
2167 void
2168 xclear(int x1, int y1, int x2, int y2) {
2169 XftDrawRect(xw.xft_draw,
2170 &dc.xft_col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG],
2171 x1, y1, x2-x1, y2-y1);
2172 }
2173
2174 void
2175 xhints(void) {
2176 XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
2177 XWMHints wm = {.flags = InputHint, .input = 1};
2178 XSizeHints *sizeh = NULL;
2179
2180 sizeh = XAllocSizeHints();
2181 if(xw.isfixed == False) {
2182 sizeh->flags = PSize | PResizeInc | PBaseSize;
2183 sizeh->height = xw.h;
2184 sizeh->width = xw.w;
2185 sizeh->height_inc = xw.ch;
2186 sizeh->width_inc = xw.cw;
2187 sizeh->base_height = 2*BORDER;
2188 sizeh->base_width = 2*BORDER;
2189 } else {
2190 sizeh->flags = PMaxSize | PMinSize;
2191 sizeh->min_width = sizeh->max_width = xw.fw;
2192 sizeh->min_height = sizeh->max_height = xw.fh;
2193 }
2194
2195 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2196 XFree(sizeh);
2197 }
2198
2199 int
2200 xloadfont(Font *f, FcPattern *pattern) {
2201 FcPattern *match;
2202 FcResult result;
2203
2204 match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
2205 if(!match)
2206 return 1;
2207 if(!(f->xft_set = XftFontOpenPattern(xw.dpy, match))) {
2208 FcPatternDestroy(match);
2209 return 1;
2210 }
2211
2212 f->ascent = f->xft_set->ascent;
2213 f->descent = f->xft_set->descent;
2214 f->lbearing = 0;
2215 f->rbearing = f->xft_set->max_advance_width;
2216
2217 f->height = f->xft_set->height;
2218 f->width = f->lbearing + f->rbearing;
2219
2220 return 0;
2221 }
2222
2223 void
2224 xloadfonts(char *fontstr, int fontsize) {
2225 FcPattern *pattern;
2226 FcResult result;
2227 double fontval;
2228
2229 pattern = FcNameParse((FcChar8 *)fontstr);
2230 if(!pattern)
2231 die("st: can't open font %s\n", fontstr);
2232
2233 if(fontsize > 0) {
2234 FcPatternDel(pattern, FC_PIXEL_SIZE);
2235 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2236 usedfontsize = fontsize;
2237 } else {
2238 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2239 if(result == FcResultMatch) {
2240 usedfontsize = (int)fontval;
2241 } else {
2242 /*
2243 * Default font size is 12, if none given. This is to
2244 * have a known usedfontsize value.
2245 */
2246 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2247 usedfontsize = 12;
2248 }
2249 }
2250
2251 if(xloadfont(&dc.font, pattern))
2252 die("st: can't open font %s\n", fontstr);
2253
2254 /* Setting character width and height. */
2255 xw.cw = dc.font.width;
2256 xw.ch = dc.font.height;
2257
2258 FcPatternDel(pattern, FC_WEIGHT);
2259 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2260 if(xloadfont(&dc.bfont, pattern))
2261 die("st: can't open font %s\n", fontstr);
2262
2263 FcPatternDel(pattern, FC_SLANT);
2264 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2265 if(xloadfont(&dc.ibfont, pattern))
2266 die("st: can't open font %s\n", fontstr);
2267
2268 FcPatternDel(pattern, FC_WEIGHT);
2269 if(xloadfont(&dc.ifont, pattern))
2270 die("st: can't open font %s\n", fontstr);
2271
2272 FcPatternDestroy(pattern);
2273 }
2274
2275 void
2276 xzoom(const Arg *arg)
2277 {
2278 xloadfonts(usedfont, usedfontsize + arg->i);
2279 cresize(0, 0);
2280 draw();
2281 }
2282
2283 void
2284 xinit(void) {
2285 XSetWindowAttributes attrs;
2286 Cursor cursor;
2287 Window parent;
2288 int sw, sh, major, minor;
2289
2290 if(!(xw.dpy = XOpenDisplay(NULL)))
2291 die("Can't open display\n");
2292 xw.scr = XDefaultScreen(xw.dpy);
2293 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2294
2295 /* font */
2296 usedfont = (opt_font == NULL)? FONT : opt_font;
2297 xloadfonts(usedfont, 0);
2298
2299 /* colors */
2300 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2301 xloadcols();
2302
2303 /* adjust fixed window geometry */
2304 if(xw.isfixed) {
2305 sw = DisplayWidth(xw.dpy, xw.scr);
2306 sh = DisplayHeight(xw.dpy, xw.scr);
2307 if(xw.fx < 0)
2308 xw.fx = sw + xw.fx - xw.fw - 1;
2309 if(xw.fy < 0)
2310 xw.fy = sh + xw.fy - xw.fh - 1;
2311
2312 xw.h = xw.fh;
2313 xw.w = xw.fw;
2314 } else {
2315 /* window - default size */
2316 xw.h = 2*BORDER + term.row * xw.ch;
2317 xw.w = 2*BORDER + term.col * xw.cw;
2318 xw.fx = 0;
2319 xw.fy = 0;
2320 }
2321
2322 attrs.background_pixel = dc.xft_col[DefaultBG].pixel;
2323 attrs.border_pixel = dc.xft_col[DefaultBG].pixel;
2324 attrs.bit_gravity = NorthWestGravity;
2325 attrs.event_mask = FocusChangeMask | KeyPressMask
2326 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2327 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2328 attrs.colormap = xw.cmap;
2329
2330 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
2331 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2332 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2333 xw.vis,
2334 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2335 | CWColormap,
2336 &attrs);
2337
2338 /* double buffering */
2339 if(!XdbeQueryExtension(xw.dpy, &major, &minor))
2340 die("Xdbe extension is not present\n");
2341 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
2342
2343 /* Xft rendering context */
2344 xw.xft_draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2345
2346 /* input methods */
2347 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
2348 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2349 | XIMStatusNothing, XNClientWindow, xw.win,
2350 XNFocusWindow, xw.win, NULL);
2351 /* gc */
2352 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
2353
2354 /* white cursor, black outline */
2355 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2356 XDefineCursor(xw.dpy, xw.win, cursor);
2357 XRecolorCursor(xw.dpy, cursor,
2358 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2359 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2360
2361 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2362 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2363 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2364
2365 xresettitle();
2366 XMapWindow(xw.dpy, xw.win);
2367 xhints();
2368 XSync(xw.dpy, 0);
2369 }
2370
2371 void
2372 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2373 int winx = BORDER + x * xw.cw, winy = BORDER + y * xw.ch,
2374 width = charlen * xw.cw;
2375 Font *font = &dc.font;
2376 XGlyphInfo extents;
2377 XftColor *fg = &dc.xft_col[base.fg], *bg = &dc.xft_col[base.bg],
2378 *temp, revfg, revbg;
2379 XRenderColor colfg, colbg;
2380
2381 if(base.mode & ATTR_REVERSE)
2382 temp = fg, fg = bg, bg = temp;
2383
2384 if(base.mode & ATTR_BOLD) {
2385 if(BETWEEN(base.fg, 0, 7)) {
2386 /* basic system colors */
2387 fg = &dc.xft_col[base.fg + 8];
2388 } else if(BETWEEN(base.fg, 16, 195)) {
2389 /* 256 colors */
2390 fg = &dc.xft_col[base.fg + 36];
2391 } else if(BETWEEN(base.fg, 232, 251)) {
2392 /* greyscale */
2393 fg = &dc.xft_col[base.fg + 4];
2394 }
2395 /*
2396 * Those ranges will not be brightened:
2397 * 8 - 15 – bright system colors
2398 * 196 - 231 – highest 256 color cube
2399 * 252 - 255 – brightest colors in greyscale
2400 */
2401 font = &dc.bfont;
2402 }
2403
2404 if(base.mode & ATTR_ITALIC)
2405 font = &dc.ifont;
2406 if(base.mode & (ATTR_ITALIC|ATTR_ITALIC))
2407 font = &dc.ibfont;
2408
2409 if(IS_SET(MODE_REVERSE)) {
2410 if(fg == &dc.xft_col[DefaultFG]) {
2411 fg = &dc.xft_col[DefaultBG];
2412 } else {
2413 colfg.red = ~fg->color.red;
2414 colfg.green = ~fg->color.green;
2415 colfg.blue = ~fg->color.blue;
2416 colfg.alpha = fg->color.alpha;
2417 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2418 fg = &revfg;
2419 }
2420
2421 if(bg == &dc.xft_col[DefaultBG]) {
2422 bg = &dc.xft_col[DefaultFG];
2423 } else {
2424 colbg.red = ~bg->color.red;
2425 colbg.green = ~bg->color.green;
2426 colbg.blue = ~bg->color.blue;
2427 colbg.alpha = bg->color.alpha;
2428 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2429 bg = &revbg;
2430 }
2431 }
2432
2433 XftTextExtentsUtf8(xw.dpy, font->xft_set, (FcChar8 *)s, bytelen,
2434 &extents);
2435 width = extents.xOff;
2436
2437 /* Intelligent cleaning up of the borders. */
2438 if(x == 0) {
2439 xclear(0, (y == 0)? 0 : winy, BORDER,
2440 winy + xw.ch + (y == term.row-1)? xw.h : 0);
2441 }
2442 if(x + charlen >= term.col-1) {
2443 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2444 (y == term.row-1)? xw.h : (winy + xw.ch));
2445 }
2446 if(y == 0)
2447 xclear(winx, 0, winx + width, BORDER);
2448 if(y == term.row-1)
2449 xclear(winx, winy + xw.ch, winx + width, xw.h);
2450
2451 XftDrawRect(xw.xft_draw, bg, winx, winy, width, xw.ch);
2452 XftDrawStringUtf8(xw.xft_draw, fg, font->xft_set, winx,
2453 winy + font->ascent, (FcChar8 *)s, bytelen);
2454
2455 if(base.mode & ATTR_UNDERLINE) {
2456 XftDrawRect(xw.xft_draw, fg, winx, winy + font->ascent + 1,
2457 width, 1);
2458 }
2459 }
2460
2461 void
2462 xdrawcursor(void) {
2463 static int oldx = 0, oldy = 0;
2464 int sl;
2465 Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
2466
2467 LIMIT(oldx, 0, term.col-1);
2468 LIMIT(oldy, 0, term.row-1);
2469
2470 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2471 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2472
2473 /* remove the old cursor */
2474 if(term.line[oldy][oldx].state & GLYPH_SET) {
2475 sl = utf8size(term.line[oldy][oldx].c);
2476 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
2477 oldy, 1, sl);
2478 } else {
2479 xtermclear(oldx, oldy, oldx, oldy);
2480 }
2481
2482 /* draw the new one */
2483 if(!(term.c.state & CURSOR_HIDE)) {
2484 if(!(xw.state & WIN_FOCUSED))
2485 g.bg = DefaultUCS;
2486
2487 if(IS_SET(MODE_REVERSE))
2488 g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
2489
2490 sl = utf8size(g.c);
2491 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2492 oldx = term.c.x, oldy = term.c.y;
2493 }
2494 }
2495
2496 void
2497 xresettitle(void) {
2498 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
2499 }
2500
2501 void
2502 redraw(void) {
2503 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2504
2505 tfulldirt();
2506 draw();
2507 XSync(xw.dpy, False); /* necessary for a good tput flash */
2508 nanosleep(&tv, NULL);
2509 }
2510
2511 void
2512 draw(void) {
2513 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2514
2515 drawregion(0, 0, term.col, term.row);
2516 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2517 }
2518
2519 void
2520 drawregion(int x1, int y1, int x2, int y2) {
2521 int ic, ib, x, y, ox, sl;
2522 Glyph base, new;
2523 char buf[DRAW_BUF_SIZ];
2524 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
2525
2526 if((sel.alt && !alt) || (!sel.alt && alt))
2527 ena_sel = 0;
2528 if(!(xw.state & WIN_VISIBLE))
2529 return;
2530
2531 for(y = y1; y < y2; y++) {
2532 if(!term.dirty[y])
2533 continue;
2534
2535 xtermclear(0, y, term.col, y);
2536 term.dirty[y] = 0;
2537 base = term.line[y][0];
2538 ic = ib = ox = 0;
2539 for(x = x1; x < x2; x++) {
2540 new = term.line[y][x];
2541 if(ena_sel && *(new.c) && selected(x, y))
2542 new.mode ^= ATTR_REVERSE;
2543 if(ib > 0 && (!(new.state & GLYPH_SET)
2544 || ATTRCMP(base, new)
2545 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2546 xdraws(buf, base, ox, y, ic, ib);
2547 ic = ib = 0;
2548 }
2549 if(new.state & GLYPH_SET) {
2550 if(ib == 0) {
2551 ox = x;
2552 base = new;
2553 }
2554 sl = utf8size(new.c);
2555 memcpy(buf+ib, new.c, sl);
2556 ib += sl;
2557 ++ic;
2558 }
2559 }
2560 if(ib > 0)
2561 xdraws(buf, base, ox, y, ic, ib);
2562 }
2563 xdrawcursor();
2564 }
2565
2566 void
2567 expose(XEvent *ev) {
2568 XExposeEvent *e = &ev->xexpose;
2569
2570 if(xw.state & WIN_REDRAW) {
2571 if(!e->count)
2572 xw.state &= ~WIN_REDRAW;
2573 }
2574 }
2575
2576 void
2577 visibility(XEvent *ev) {
2578 XVisibilityEvent *e = &ev->xvisibility;
2579
2580 if(e->state == VisibilityFullyObscured) {
2581 xw.state &= ~WIN_VISIBLE;
2582 } else if(!(xw.state & WIN_VISIBLE)) {
2583 /* need a full redraw for next Expose, not just a buf copy */
2584 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2585 }
2586 }
2587
2588 void
2589 unmap(XEvent *ev) {
2590 xw.state &= ~WIN_VISIBLE;
2591 }
2592
2593 void
2594 xseturgency(int add) {
2595 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2596
2597 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2598 XSetWMHints(xw.dpy, xw.win, h);
2599 XFree(h);
2600 }
2601
2602 void
2603 focus(XEvent *ev) {
2604 if(ev->type == FocusIn) {
2605 XSetICFocus(xw.xic);
2606 xw.state |= WIN_FOCUSED;
2607 xseturgency(0);
2608 } else {
2609 XUnsetICFocus(xw.xic);
2610 xw.state &= ~WIN_FOCUSED;
2611 }
2612 }
2613
2614 char*
2615 kmap(KeySym k, uint state) {
2616 int i;
2617 uint mask;
2618
2619 state &= ~Mod2Mask;
2620 for(i = 0; i < LEN(key); i++) {
2621 mask = key[i].mask;
2622
2623 if(key[i].k == k && ((state & mask) == mask
2624 || (mask == XK_NO_MOD && !state))) {
2625 return (char*)key[i].s;
2626 }
2627 }
2628 return NULL;
2629 }
2630
2631 void
2632 kpress(XEvent *ev) {
2633 XKeyEvent *e = &ev->xkey;
2634 KeySym ksym;
2635 char buf[32], *customkey;
2636 int len, meta, shift, i;
2637 Status status;
2638
2639 if (IS_SET(MODE_KBDLOCK))
2640 return;
2641
2642 meta = e->state & Mod1Mask;
2643 shift = e->state & ShiftMask;
2644 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2645
2646 /* 1. shortcuts */
2647 for(i = 0; i < LEN(shortcuts); i++) {
2648 if((ksym == shortcuts[i].keysym)
2649 && (CLEANMASK(shortcuts[i].mod) == \
2650 CLEANMASK(e->state))
2651 && shortcuts[i].func) {
2652 shortcuts[i].func(&(shortcuts[i].arg));
2653 }
2654 }
2655
2656 /* 2. custom keys from config.h */
2657 if((customkey = kmap(ksym, e->state))) {
2658 ttywrite(customkey, strlen(customkey));
2659 /* 2. hardcoded (overrides X lookup) */
2660 } else {
2661 switch(ksym) {
2662 case XK_Up:
2663 case XK_Down:
2664 case XK_Left:
2665 case XK_Right:
2666 /* XXX: shift up/down doesn't work */
2667 sprintf(buf, "\033%c%c",
2668 IS_SET(MODE_APPKEYPAD) ? 'O' : '[',
2669 (shift ? "dacb":"DACB")[ksym - XK_Left]);
2670 ttywrite(buf, 3);
2671 break;
2672 case XK_Insert:
2673 if(shift)
2674 selpaste();
2675 break;
2676 case XK_Return:
2677 if(IS_SET(MODE_CRLF)) {
2678 ttywrite("\r\n", 2);
2679 } else {
2680 ttywrite("\r", 1);
2681 }
2682 break;
2683 /* 3. X lookup */
2684 default:
2685 if(len > 0) {
2686 if(meta && len == 1)
2687 ttywrite("\033", 1);
2688 ttywrite(buf, len);
2689 }
2690 break;
2691 }
2692 }
2693 }
2694
2695 void
2696 cmessage(XEvent *e) {
2697 /* See xembed specs
2698 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2699 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2700 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2701 xw.state |= WIN_FOCUSED;
2702 xseturgency(0);
2703 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2704 xw.state &= ~WIN_FOCUSED;
2705 }
2706 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
2707 /* Send SIGHUP to shell */
2708 kill(pid, SIGHUP);
2709 exit(EXIT_SUCCESS);
2710 }
2711 }
2712
2713 void
2714 cresize(int width, int height)
2715 {
2716 int col, row;
2717
2718 if(width != 0)
2719 xw.w = width;
2720 if(height != 0)
2721 xw.h = height;
2722
2723 col = (xw.w - 2*BORDER) / xw.cw;
2724 row = (xw.h - 2*BORDER) / xw.ch;
2725 if(col == term.col && row == term.row)
2726 return;
2727
2728 tresize(col, row);
2729 xresize(col, row);
2730 ttyresize();
2731 }
2732
2733 void
2734 resize(XEvent *e) {
2735 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2736 return;
2737
2738 cresize(e->xconfigure.width, e->xconfigure.height);
2739 }
2740
2741 void
2742 run(void) {
2743 XEvent ev;
2744 fd_set rfd;
2745 int xfd = XConnectionNumber(xw.dpy), i;
2746 struct timeval drawtimeout, *tv = NULL;
2747
2748 for(i = 0;; i++) {
2749 FD_ZERO(&rfd);
2750 FD_SET(cmdfd, &rfd);
2751 FD_SET(xfd, &rfd);
2752 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
2753 if(errno == EINTR)
2754 continue;
2755 die("select failed: %s\n", SERRNO);
2756 }
2757
2758 /*
2759 * Stop after a certain number of reads so the user does not
2760 * feel like the system is stuttering.
2761 */
2762 if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
2763 ttyread();
2764
2765 /*
2766 * Just wait a bit so it isn't disturbing the
2767 * user and the system is able to write something.
2768 */
2769 drawtimeout.tv_sec = 0;
2770 drawtimeout.tv_usec = 5;
2771 tv = &drawtimeout;
2772 continue;
2773 }
2774 i = 0;
2775 tv = NULL;
2776
2777 while(XPending(xw.dpy)) {
2778 XNextEvent(xw.dpy, &ev);
2779 if(XFilterEvent(&ev, None))
2780 continue;
2781 if(handler[ev.type])
2782 (handler[ev.type])(&ev);
2783 }
2784
2785 draw();
2786 XFlush(xw.dpy);
2787 }
2788 }
2789
2790 int
2791 main(int argc, char *argv[]) {
2792 int i, bitm, xr, yr;
2793 uint wr, hr;
2794
2795 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2796 xw.isfixed = False;
2797
2798 for(i = 1; i < argc; i++) {
2799 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2800 case 'c':
2801 if(++i < argc)
2802 opt_class = argv[i];
2803 break;
2804 case 'e':
2805 /* eat every remaining arguments */
2806 if(++i < argc)
2807 opt_cmd = &argv[i];
2808 goto run;
2809 case 'f':
2810 if(++i < argc)
2811 opt_font = argv[i];
2812 break;
2813 case 'g':
2814 if(++i >= argc)
2815 break;
2816
2817 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2818 if(bitm & XValue)
2819 xw.fx = xr;
2820 if(bitm & YValue)
2821 xw.fy = yr;
2822 if(bitm & WidthValue)
2823 xw.fw = (int)wr;
2824 if(bitm & HeightValue)
2825 xw.fh = (int)hr;
2826 if(bitm & XNegative && xw.fx == 0)
2827 xw.fx = -1;
2828 if(bitm & XNegative && xw.fy == 0)
2829 xw.fy = -1;
2830
2831 if(xw.fh != 0 && xw.fw != 0)
2832 xw.isfixed = True;
2833 break;
2834 case 'o':
2835 if(++i < argc)
2836 opt_io = argv[i];
2837 break;
2838 case 't':
2839 if(++i < argc)
2840 opt_title = argv[i];
2841 break;
2842 case 'v':
2843 default:
2844 die(USAGE);
2845 case 'w':
2846 if(++i < argc)
2847 opt_embed = argv[i];
2848 break;
2849 }
2850 }
2851
2852 run:
2853 setlocale(LC_CTYPE, "");
2854 XSetLocaleModifiers("");
2855 tnew(80, 24);
2856 xinit();
2857 ttynew();
2858 selinit();
2859 run();
2860 return 0;
2861 }
2862