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Remove ul capability
[st.git] / st.c
1 /* See LICENSE for licence details. */
2 #include <ctype.h>
3 #include <errno.h>
4 #include <fcntl.h>
5 #include <limits.h>
6 #include <locale.h>
7 #include <pwd.h>
8 #include <stdarg.h>
9 #include <stdbool.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include <signal.h>
14 #include <stdint.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 <libgen.h>
24 #include <X11/Xatom.h>
25 #include <X11/Xlib.h>
26 #include <X11/Xutil.h>
27 #include <X11/cursorfont.h>
28 #include <X11/keysym.h>
29 #include <X11/Xft/Xft.h>
30 #include <fontconfig/fontconfig.h>
31 #include <wchar.h>
32
33 #include "arg.h"
34
35 char *argv0;
36
37 #define Glyph Glyph_
38 #define Font Font_
39
40 #if defined(__linux)
41 #include <pty.h>
42 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
43 #include <util.h>
44 #elif defined(__FreeBSD__) || defined(__DragonFly__)
45 #include <libutil.h>
46 #endif
47
48
49 /* XEMBED messages */
50 #define XEMBED_FOCUS_IN 4
51 #define XEMBED_FOCUS_OUT 5
52
53 /* Arbitrary sizes */
54 #define UTF_INVALID 0xFFFD
55 #define UTF_SIZ 4
56 #define ESC_BUF_SIZ (128*UTF_SIZ)
57 #define ESC_ARG_SIZ 16
58 #define STR_BUF_SIZ ESC_BUF_SIZ
59 #define STR_ARG_SIZ ESC_ARG_SIZ
60 #define DRAW_BUF_SIZ 20*1024
61 #define XK_ANY_MOD UINT_MAX
62 #define XK_NO_MOD 0
63 #define XK_SWITCH_MOD (1<<13)
64
65 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
66
67 /* macros */
68 #define MIN(a, b) ((a) < (b) ? (a) : (b))
69 #define MAX(a, b) ((a) < (b) ? (b) : (a))
70 #define LEN(a) (sizeof(a) / sizeof(a)[0])
71 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
72 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
73 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f))
74 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
75 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
76 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
77 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
78 #define IS_SET(flag) ((term.mode & (flag)) != 0)
79 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_nsec-t2.tv_nsec)/1E6)
80 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
81
82 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
83 #define IS_TRUECOL(x) (1 << 24 & (x))
84 #define TRUERED(x) (((x) & 0xff0000) >> 8)
85 #define TRUEGREEN(x) (((x) & 0xff00))
86 #define TRUEBLUE(x) (((x) & 0xff) << 8)
87
88
89 #define VT102ID "\033[?6c"
90
91 enum glyph_attribute {
92 ATTR_NULL = 0,
93 ATTR_BOLD = 1,
94 ATTR_FAINT = 2,
95 ATTR_ITALIC = 4,
96 ATTR_UNDERLINE = 8,
97 ATTR_BLINK = 16,
98 ATTR_REVERSE = 32,
99 ATTR_INVISIBLE = 64,
100 ATTR_STRUCK = 128,
101 ATTR_WRAP = 256,
102 ATTR_WIDE = 512,
103 ATTR_WDUMMY = 1024,
104 };
105
106 enum cursor_movement {
107 CURSOR_SAVE,
108 CURSOR_LOAD
109 };
110
111 enum cursor_state {
112 CURSOR_DEFAULT = 0,
113 CURSOR_WRAPNEXT = 1,
114 CURSOR_ORIGIN = 2
115 };
116
117 enum term_mode {
118 MODE_WRAP = 1,
119 MODE_INSERT = 2,
120 MODE_APPKEYPAD = 4,
121 MODE_ALTSCREEN = 8,
122 MODE_CRLF = 16,
123 MODE_MOUSEBTN = 32,
124 MODE_MOUSEMOTION = 64,
125 MODE_REVERSE = 128,
126 MODE_KBDLOCK = 256,
127 MODE_HIDE = 512,
128 MODE_ECHO = 1024,
129 MODE_APPCURSOR = 2048,
130 MODE_MOUSESGR = 4096,
131 MODE_8BIT = 8192,
132 MODE_BLINK = 16384,
133 MODE_FBLINK = 32768,
134 MODE_FOCUS = 65536,
135 MODE_MOUSEX10 = 131072,
136 MODE_MOUSEMANY = 262144,
137 MODE_BRCKTPASTE = 524288,
138 MODE_PRINT = 1048576,
139 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
140 |MODE_MOUSEMANY,
141 };
142
143 enum charset {
144 CS_GRAPHIC0,
145 CS_GRAPHIC1,
146 CS_UK,
147 CS_USA,
148 CS_MULTI,
149 CS_GER,
150 CS_FIN
151 };
152
153 enum escape_state {
154 ESC_START = 1,
155 ESC_CSI = 2,
156 ESC_STR = 4, /* DCS, OSC, PM, APC */
157 ESC_ALTCHARSET = 8,
158 ESC_STR_END = 16, /* a final string was encountered */
159 ESC_TEST = 32, /* Enter in test mode */
160 };
161
162 enum window_state {
163 WIN_VISIBLE = 1,
164 WIN_REDRAW = 2,
165 WIN_FOCUSED = 4
166 };
167
168 enum selection_type {
169 SEL_REGULAR = 1,
170 SEL_RECTANGULAR = 2
171 };
172
173 enum selection_snap {
174 SNAP_WORD = 1,
175 SNAP_LINE = 2
176 };
177
178 typedef unsigned char uchar;
179 typedef unsigned int uint;
180 typedef unsigned long ulong;
181 typedef unsigned short ushort;
182
183 typedef XftDraw *Draw;
184 typedef XftColor Color;
185
186 typedef struct {
187 char c[UTF_SIZ]; /* character code */
188 ushort mode; /* attribute flags */
189 uint32_t fg; /* foreground */
190 uint32_t bg; /* background */
191 } Glyph;
192
193 typedef Glyph *Line;
194
195 typedef struct {
196 Glyph attr; /* current char attributes */
197 int x;
198 int y;
199 char state;
200 } TCursor;
201
202 /* CSI Escape sequence structs */
203 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
204 typedef struct {
205 char buf[ESC_BUF_SIZ]; /* raw string */
206 int len; /* raw string length */
207 char priv;
208 int arg[ESC_ARG_SIZ];
209 int narg; /* nb of args */
210 char mode;
211 } CSIEscape;
212
213 /* STR Escape sequence structs */
214 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
215 typedef struct {
216 char type; /* ESC type ... */
217 char buf[STR_BUF_SIZ]; /* raw string */
218 int len; /* raw string length */
219 char *args[STR_ARG_SIZ];
220 int narg; /* nb of args */
221 } STREscape;
222
223 /* Internal representation of the screen */
224 typedef struct {
225 int row; /* nb row */
226 int col; /* nb col */
227 Line *line; /* screen */
228 Line *alt; /* alternate screen */
229 bool *dirty; /* dirtyness of lines */
230 TCursor c; /* cursor */
231 int top; /* top scroll limit */
232 int bot; /* bottom scroll limit */
233 int mode; /* terminal mode flags */
234 int esc; /* escape state flags */
235 char trantbl[4]; /* charset table translation */
236 int charset; /* current charset */
237 int icharset; /* selected charset for sequence */
238 bool numlock; /* lock numbers in keyboard */
239 bool *tabs;
240 } Term;
241
242 /* Purely graphic info */
243 typedef struct {
244 Display *dpy;
245 Colormap cmap;
246 Window win;
247 Drawable buf;
248 Atom xembed, wmdeletewin, netwmname, netwmpid;
249 XIM xim;
250 XIC xic;
251 Draw draw;
252 Visual *vis;
253 XSetWindowAttributes attrs;
254 int scr;
255 bool isfixed; /* is fixed geometry? */
256 int l, t; /* left and top offset */
257 int gm; /* geometry mask */
258 int tw, th; /* tty width and height */
259 int w, h; /* window width and height */
260 int ch; /* char height */
261 int cw; /* char width */
262 char state; /* focus, redraw, visible */
263 } XWindow;
264
265 typedef struct {
266 uint b;
267 uint mask;
268 char *s;
269 } Mousekey;
270
271 typedef struct {
272 KeySym k;
273 uint mask;
274 char *s;
275 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
276 signed char appkey; /* application keypad */
277 signed char appcursor; /* application cursor */
278 signed char crlf; /* crlf mode */
279 } Key;
280
281 typedef struct {
282 int mode;
283 int type;
284 int snap;
285 /*
286 * Selection variables:
287 * nb – normalized coordinates of the beginning of the selection
288 * ne – normalized coordinates of the end of the selection
289 * ob – original coordinates of the beginning of the selection
290 * oe – original coordinates of the end of the selection
291 */
292 struct {
293 int x, y;
294 } nb, ne, ob, oe;
295
296 char *clip;
297 Atom xtarget;
298 bool alt;
299 struct timespec tclick1;
300 struct timespec tclick2;
301 } Selection;
302
303 typedef union {
304 int i;
305 uint ui;
306 float f;
307 const void *v;
308 } Arg;
309
310 typedef struct {
311 uint mod;
312 KeySym keysym;
313 void (*func)(const Arg *);
314 const Arg arg;
315 } Shortcut;
316
317 /* function definitions used in config.h */
318 static void clippaste(const Arg *);
319 static void numlock(const Arg *);
320 static void selpaste(const Arg *);
321 static void xzoom(const Arg *);
322 static void printsel(const Arg *);
323 static void printscreen(const Arg *) ;
324 static void toggleprinter(const Arg *);
325
326 /* Config.h for applying patches and the configuration. */
327 #include "config.h"
328
329 /* Font structure */
330 typedef struct {
331 int height;
332 int width;
333 int ascent;
334 int descent;
335 short lbearing;
336 short rbearing;
337 XftFont *match;
338 FcFontSet *set;
339 FcPattern *pattern;
340 } Font;
341
342 /* Drawing Context */
343 typedef struct {
344 Color col[MAX(LEN(colorname), 256)];
345 Font font, bfont, ifont, ibfont;
346 GC gc;
347 } DC;
348
349 static void die(const char *, ...);
350 static void draw(void);
351 static void redraw(int);
352 static void drawregion(int, int, int, int);
353 static void execsh(void);
354 static void sigchld(int);
355 static void run(void);
356
357 static void csidump(void);
358 static void csihandle(void);
359 static void csiparse(void);
360 static void csireset(void);
361 static void strdump(void);
362 static void strhandle(void);
363 static void strparse(void);
364 static void strreset(void);
365
366 static int tattrset(int);
367 static void tprinter(char *, size_t);
368 static void tdumpsel(void);
369 static void tdumpline(int);
370 static void tdump(void);
371 static void tclearregion(int, int, int, int);
372 static void tcursor(int);
373 static void tdeletechar(int);
374 static void tdeleteline(int);
375 static void tinsertblank(int);
376 static void tinsertblankline(int);
377 static int tlinelen(int);
378 static void tmoveto(int, int);
379 static void tmoveato(int, int);
380 static void tnew(int, int);
381 static void tnewline(int);
382 static void tputtab(int);
383 static void tputc(char *, int);
384 static void treset(void);
385 static int tresize(int, int);
386 static void tscrollup(int, int);
387 static void tscrolldown(int, int);
388 static void tsetattr(int *, int);
389 static void tsetchar(char *, Glyph *, int, int);
390 static void tsetscroll(int, int);
391 static void tswapscreen(void);
392 static void tsetdirt(int, int);
393 static void tsetdirtattr(int);
394 static void tsetmode(bool, bool, int *, int);
395 static void tfulldirt(void);
396 static void techo(char *, int);
397 static void tcontrolcode(uchar );
398 static void tdectest(char );
399 static int32_t tdefcolor(int *, int *, int);
400 static void tdeftran(char);
401 static inline bool match(uint, uint);
402 static void ttynew(void);
403 static void ttyread(void);
404 static void ttyresize(void);
405 static void ttysend(char *, size_t);
406 static void ttywrite(const char *, size_t);
407 static void tstrsequence(uchar c);
408
409 static void xdraws(char *, Glyph, int, int, int, int);
410 static void xhints(void);
411 static void xclear(int, int, int, int);
412 static void xdrawcursor(void);
413 static void xinit(void);
414 static void xloadcols(void);
415 static int xsetcolorname(int, const char *);
416 static int xgeommasktogravity(int);
417 static int xloadfont(Font *, FcPattern *);
418 static void xloadfonts(char *, double);
419 static int xloadfontset(Font *);
420 static void xsettitle(char *);
421 static void xresettitle(void);
422 static void xsetpointermotion(int);
423 static void xseturgency(int);
424 static void xsetsel(char *);
425 static void xtermclear(int, int, int, int);
426 static void xunloadfont(Font *);
427 static void xunloadfonts(void);
428 static void xresize(int, int);
429
430 static void expose(XEvent *);
431 static void visibility(XEvent *);
432 static void unmap(XEvent *);
433 static char *kmap(KeySym, uint);
434 static void kpress(XEvent *);
435 static void cmessage(XEvent *);
436 static void cresize(int, int);
437 static void resize(XEvent *);
438 static void focus(XEvent *);
439 static void brelease(XEvent *);
440 static void bpress(XEvent *);
441 static void bmotion(XEvent *);
442 static void selnotify(XEvent *);
443 static void selclear(XEvent *);
444 static void selrequest(XEvent *);
445
446 static void selinit(void);
447 static void selnormalize(void);
448 static inline bool selected(int, int);
449 static char *getsel(void);
450 static void selcopy(void);
451 static void selscroll(int, int);
452 static void selsnap(int, int *, int *, int);
453 static void getbuttoninfo(XEvent *);
454 static void mousereport(XEvent *);
455
456 static size_t utf8decode(char *, long *, size_t);
457 static long utf8decodebyte(char, size_t *);
458 static size_t utf8encode(long, char *, size_t);
459 static char utf8encodebyte(long, size_t);
460 static size_t utf8len(char *);
461 static size_t utf8validate(long *, size_t);
462
463 static ssize_t xwrite(int, const char *, size_t);
464 static void *xmalloc(size_t);
465 static void *xrealloc(void *, size_t);
466 static char *xstrdup(char *);
467
468 static void usage(void);
469
470 static void (*handler[LASTEvent])(XEvent *) = {
471 [KeyPress] = kpress,
472 [ClientMessage] = cmessage,
473 [ConfigureNotify] = resize,
474 [VisibilityNotify] = visibility,
475 [UnmapNotify] = unmap,
476 [Expose] = expose,
477 [FocusIn] = focus,
478 [FocusOut] = focus,
479 [MotionNotify] = bmotion,
480 [ButtonPress] = bpress,
481 [ButtonRelease] = brelease,
482 [SelectionClear] = selclear,
483 [SelectionNotify] = selnotify,
484 [SelectionRequest] = selrequest,
485 };
486
487 /* Globals */
488 static DC dc;
489 static XWindow xw;
490 static Term term;
491 static CSIEscape csiescseq;
492 static STREscape strescseq;
493 static int cmdfd;
494 static pid_t pid;
495 static Selection sel;
496 static int iofd = STDOUT_FILENO;
497 static char **opt_cmd = NULL;
498 static char *opt_io = NULL;
499 static char *opt_title = NULL;
500 static char *opt_embed = NULL;
501 static char *opt_class = NULL;
502 static char *opt_font = NULL;
503 static int oldbutton = 3; /* button event on startup: 3 = release */
504
505 static char *usedfont = NULL;
506 static double usedfontsize = 0;
507
508 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
509 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
510 static long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
511 static long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
512
513 /* Font Ring Cache */
514 enum {
515 FRC_NORMAL,
516 FRC_ITALIC,
517 FRC_BOLD,
518 FRC_ITALICBOLD
519 };
520
521 typedef struct {
522 XftFont *font;
523 int flags;
524 } Fontcache;
525
526 /* Fontcache is an array now. A new font will be appended to the array. */
527 static Fontcache frc[16];
528 static int frclen = 0;
529
530 ssize_t
531 xwrite(int fd, const char *s, size_t len) {
532 size_t aux = len;
533
534 while(len > 0) {
535 ssize_t r = write(fd, s, len);
536 if(r < 0)
537 return r;
538 len -= r;
539 s += r;
540 }
541 return aux;
542 }
543
544 void *
545 xmalloc(size_t len) {
546 void *p = malloc(len);
547
548 if(!p)
549 die("Out of memory\n");
550
551 return p;
552 }
553
554 void *
555 xrealloc(void *p, size_t len) {
556 if((p = realloc(p, len)) == NULL)
557 die("Out of memory\n");
558
559 return p;
560 }
561
562 char *
563 xstrdup(char *s) {
564 if((s = strdup(s)) == NULL)
565 die("Out of memory\n");
566
567 return s;
568 }
569
570 size_t
571 utf8decode(char *c, long *u, size_t clen) {
572 size_t i, j, len, type;
573 long udecoded;
574
575 *u = UTF_INVALID;
576 if(!clen)
577 return 0;
578 udecoded = utf8decodebyte(c[0], &len);
579 if(!BETWEEN(len, 1, UTF_SIZ))
580 return 1;
581 for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
582 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
583 if(type != 0)
584 return j;
585 }
586 if(j < len)
587 return 0;
588 *u = udecoded;
589 utf8validate(u, len);
590 return len;
591 }
592
593 long
594 utf8decodebyte(char c, size_t *i) {
595 for(*i = 0; *i < LEN(utfmask); ++(*i))
596 if(((uchar)c & utfmask[*i]) == utfbyte[*i])
597 return (uchar)c & ~utfmask[*i];
598 return 0;
599 }
600
601 size_t
602 utf8encode(long u, char *c, size_t clen) {
603 size_t len, i;
604
605 len = utf8validate(&u, 0);
606 if(clen < len)
607 return 0;
608 for(i = len - 1; i != 0; --i) {
609 c[i] = utf8encodebyte(u, 0);
610 u >>= 6;
611 }
612 c[0] = utf8encodebyte(u, len);
613 return len;
614 }
615
616 char
617 utf8encodebyte(long u, size_t i) {
618 return utfbyte[i] | (u & ~utfmask[i]);
619 }
620
621 size_t
622 utf8len(char *c) {
623 return utf8decode(c, &(long){0}, UTF_SIZ);
624 }
625
626 size_t
627 utf8validate(long *u, size_t i) {
628 if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
629 *u = UTF_INVALID;
630 for(i = 1; *u > utfmax[i]; ++i)
631 ;
632 return i;
633 }
634
635 static void
636 selinit(void) {
637 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
638 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
639 sel.mode = 0;
640 sel.ob.x = -1;
641 sel.clip = NULL;
642 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
643 if(sel.xtarget == None)
644 sel.xtarget = XA_STRING;
645 }
646
647 static int
648 x2col(int x) {
649 x -= borderpx;
650 x /= xw.cw;
651
652 return LIMIT(x, 0, term.col-1);
653 }
654
655 static int
656 y2row(int y) {
657 y -= borderpx;
658 y /= xw.ch;
659
660 return LIMIT(y, 0, term.row-1);
661 }
662
663 static int tlinelen(int y) {
664 int i = term.col;
665
666 while (i > 0 && term.line[y][i - 1].c[0] == ' ')
667 --i;
668
669 return i;
670 }
671
672 static void
673 selnormalize(void) {
674 int i;
675
676 if(sel.ob.y == sel.oe.y || sel.type == SEL_RECTANGULAR) {
677 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
678 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
679 } else {
680 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
681 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
682 }
683 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
684 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
685
686 /* expand selection over line breaks */
687 if (sel.type == SEL_RECTANGULAR)
688 return;
689 i = tlinelen(sel.nb.y);
690 if (i < sel.nb.x)
691 sel.nb.x = i;
692 if (tlinelen(sel.ne.y) <= sel.ne.x)
693 sel.ne.x = term.col - 1;
694 }
695
696 static inline bool
697 selected(int x, int y) {
698 if(sel.type == SEL_RECTANGULAR)
699 return BETWEEN(y, sel.nb.y, sel.ne.y)
700 && BETWEEN(x, sel.nb.x, sel.ne.x);
701
702 return BETWEEN(y, sel.nb.y, sel.ne.y)
703 && (y != sel.nb.y || x >= sel.nb.x)
704 && (y != sel.ne.y || x <= sel.ne.x);
705 }
706
707 void
708 selsnap(int mode, int *x, int *y, int direction) {
709 int newx, newy, xt, yt;
710 Glyph *gp;
711
712 switch(mode) {
713 case SNAP_WORD:
714 /*
715 * Snap around if the word wraps around at the end or
716 * beginning of a line.
717 */
718 for(;;) {
719 newx = *x + direction;
720 newy = *y;
721 if(!BETWEEN(newx, 0, term.col - 1)) {
722 newy += direction;
723 newx = (newx + term.col) % term.col;
724 if (!BETWEEN(newy, 0, term.row - 1))
725 break;
726
727 if(direction > 0)
728 yt = *y, xt = *x;
729 else
730 yt = newy, xt = newx;
731 if(!(term.line[yt][xt].mode & ATTR_WRAP))
732 break;
733 }
734
735 if (newx >= tlinelen(newy))
736 break;
737
738 gp = &term.line[newy][newx];
739 if (!(gp->mode & ATTR_WDUMMY) && strchr(worddelimiters, gp->c[0]))
740 break;
741
742 *x = newx;
743 *y = newy;
744 }
745 break;
746 case SNAP_LINE:
747 /*
748 * Snap around if the the previous line or the current one
749 * has set ATTR_WRAP at its end. Then the whole next or
750 * previous line will be selected.
751 */
752 *x = (direction < 0) ? 0 : term.col - 1;
753 if(direction < 0 && *y > 0) {
754 for(; *y > 0; *y += direction) {
755 if(!(term.line[*y-1][term.col-1].mode
756 & ATTR_WRAP)) {
757 break;
758 }
759 }
760 } else if(direction > 0 && *y < term.row-1) {
761 for(; *y < term.row; *y += direction) {
762 if(!(term.line[*y][term.col-1].mode
763 & ATTR_WRAP)) {
764 break;
765 }
766 }
767 }
768 break;
769 }
770 }
771
772 void
773 getbuttoninfo(XEvent *e) {
774 int type;
775 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
776
777 sel.alt = IS_SET(MODE_ALTSCREEN);
778
779 sel.oe.x = x2col(e->xbutton.x);
780 sel.oe.y = y2row(e->xbutton.y);
781
782 if(sel.ob.y < sel.oe.y
783 || (sel.ob.y == sel.oe.y && sel.ob.x < sel.oe.x)) {
784 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
785 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
786 } else {
787 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, -1);
788 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, +1);
789 }
790 selnormalize();
791
792 sel.type = SEL_REGULAR;
793 for(type = 1; type < LEN(selmasks); ++type) {
794 if(match(selmasks[type], state)) {
795 sel.type = type;
796 break;
797 }
798 }
799 }
800
801 void
802 mousereport(XEvent *e) {
803 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
804 button = e->xbutton.button, state = e->xbutton.state,
805 len;
806 char buf[40];
807 static int ox, oy;
808
809 /* from urxvt */
810 if(e->xbutton.type == MotionNotify) {
811 if(x == ox && y == oy)
812 return;
813 if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
814 return;
815 /* MOUSE_MOTION: no reporting if no button is pressed */
816 if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
817 return;
818
819 button = oldbutton + 32;
820 ox = x;
821 oy = y;
822 } else {
823 if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
824 button = 3;
825 } else {
826 button -= Button1;
827 if(button >= 3)
828 button += 64 - 3;
829 }
830 if(e->xbutton.type == ButtonPress) {
831 oldbutton = button;
832 ox = x;
833 oy = y;
834 } else if(e->xbutton.type == ButtonRelease) {
835 oldbutton = 3;
836 /* MODE_MOUSEX10: no button release reporting */
837 if(IS_SET(MODE_MOUSEX10))
838 return;
839 if (button == 64 || button == 65)
840 return;
841 }
842 }
843
844 if(!IS_SET(MODE_MOUSEX10)) {
845 button += (state & ShiftMask ? 4 : 0)
846 + (state & Mod4Mask ? 8 : 0)
847 + (state & ControlMask ? 16 : 0);
848 }
849
850 len = 0;
851 if(IS_SET(MODE_MOUSESGR)) {
852 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
853 button, x+1, y+1,
854 e->xbutton.type == ButtonRelease ? 'm' : 'M');
855 } else if(x < 223 && y < 223) {
856 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
857 32+button, 32+x+1, 32+y+1);
858 } else {
859 return;
860 }
861
862 ttywrite(buf, len);
863 }
864
865 void
866 bpress(XEvent *e) {
867 struct timespec now;
868 Mousekey *mk;
869
870 if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
871 mousereport(e);
872 return;
873 }
874
875 for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
876 if(e->xbutton.button == mk->b
877 && match(mk->mask, e->xbutton.state)) {
878 ttysend(mk->s, strlen(mk->s));
879 return;
880 }
881 }
882
883 if(e->xbutton.button == Button1) {
884 clock_gettime(CLOCK_MONOTONIC, &now);
885
886 /* Clear previous selection, logically and visually. */
887 selclear(NULL);
888 sel.mode = 1;
889 sel.type = SEL_REGULAR;
890 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
891 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
892
893 /*
894 * If the user clicks below predefined timeouts specific
895 * snapping behaviour is exposed.
896 */
897 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
898 sel.snap = SNAP_LINE;
899 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
900 sel.snap = SNAP_WORD;
901 } else {
902 sel.snap = 0;
903 }
904 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
905 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
906 selnormalize();
907
908 /*
909 * Draw selection, unless it's regular and we don't want to
910 * make clicks visible
911 */
912 if(sel.snap != 0) {
913 sel.mode++;
914 tsetdirt(sel.nb.y, sel.ne.y);
915 }
916 sel.tclick2 = sel.tclick1;
917 sel.tclick1 = now;
918 }
919 }
920
921 char *
922 getsel(void) {
923 char *str, *ptr;
924 int y, bufsize, size, lastx, linelen;
925 Glyph *gp, *last;
926
927 if(sel.ob.x == -1)
928 return NULL;
929
930 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
931 ptr = str = xmalloc(bufsize);
932
933 /* append every set & selected glyph to the selection */
934 for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
935 linelen = tlinelen(y);
936
937 if(sel.type == SEL_RECTANGULAR) {
938 gp = &term.line[y][sel.nb.x];
939 lastx = sel.ne.x;
940 } else {
941 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
942 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
943 }
944 last = &term.line[y][MIN(lastx, linelen-1)];
945
946 for( ; gp <= last; ++gp) {
947 if(gp->mode & ATTR_WDUMMY)
948 continue;
949
950 size = utf8len(gp->c);
951 memcpy(ptr, gp->c, size);
952 ptr += size;
953 }
954
955 /*
956 * Copy and pasting of line endings is inconsistent
957 * in the inconsistent terminal and GUI world.
958 * The best solution seems like to produce '\n' when
959 * something is copied from st and convert '\n' to
960 * '\r', when something to be pasted is received by
961 * st.
962 * FIXME: Fix the computer world.
963 */
964 if(sel.ne.y > y || lastx >= linelen)
965 *ptr++ = '\n';
966 }
967 *ptr = 0;
968 return str;
969 }
970
971 void
972 selcopy(void) {
973 xsetsel(getsel());
974 }
975
976 void
977 selnotify(XEvent *e) {
978 ulong nitems, ofs, rem;
979 int format;
980 uchar *data, *last, *repl;
981 Atom type;
982
983 ofs = 0;
984 do {
985 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
986 False, AnyPropertyType, &type, &format,
987 &nitems, &rem, &data)) {
988 fprintf(stderr, "Clipboard allocation failed\n");
989 return;
990 }
991
992 /*
993 * As seen in getsel:
994 * Line endings are inconsistent in the terminal and GUI world
995 * copy and pasting. When receiving some selection data,
996 * replace all '\n' with '\r'.
997 * FIXME: Fix the computer world.
998 */
999 repl = data;
1000 last = data + nitems * format / 8;
1001 while((repl = memchr(repl, '\n', last - repl))) {
1002 *repl++ = '\r';
1003 }
1004
1005 if(IS_SET(MODE_BRCKTPASTE))
1006 ttywrite("\033[200~", 6);
1007 ttysend((char *)data, nitems * format / 8);
1008 if(IS_SET(MODE_BRCKTPASTE))
1009 ttywrite("\033[201~", 6);
1010 XFree(data);
1011 /* number of 32-bit chunks returned */
1012 ofs += nitems * format / 32;
1013 } while(rem > 0);
1014 }
1015
1016 void
1017 selpaste(const Arg *dummy) {
1018 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1019 xw.win, CurrentTime);
1020 }
1021
1022 void
1023 clippaste(const Arg *dummy) {
1024 Atom clipboard;
1025
1026 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1027 XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
1028 xw.win, CurrentTime);
1029 }
1030
1031 void
1032 selclear(XEvent *e) {
1033 if(sel.ob.x == -1)
1034 return;
1035 sel.ob.x = -1;
1036 tsetdirt(sel.nb.y, sel.ne.y);
1037 }
1038
1039 void
1040 selrequest(XEvent *e) {
1041 XSelectionRequestEvent *xsre;
1042 XSelectionEvent xev;
1043 Atom xa_targets, string;
1044
1045 xsre = (XSelectionRequestEvent *) e;
1046 xev.type = SelectionNotify;
1047 xev.requestor = xsre->requestor;
1048 xev.selection = xsre->selection;
1049 xev.target = xsre->target;
1050 xev.time = xsre->time;
1051 /* reject */
1052 xev.property = None;
1053
1054 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1055 if(xsre->target == xa_targets) {
1056 /* respond with the supported type */
1057 string = sel.xtarget;
1058 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1059 XA_ATOM, 32, PropModeReplace,
1060 (uchar *) &string, 1);
1061 xev.property = xsre->property;
1062 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
1063 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1064 xsre->target, 8, PropModeReplace,
1065 (uchar *) sel.clip, strlen(sel.clip));
1066 xev.property = xsre->property;
1067 }
1068
1069 /* all done, send a notification to the listener */
1070 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
1071 fprintf(stderr, "Error sending SelectionNotify event\n");
1072 }
1073
1074 void
1075 xsetsel(char *str) {
1076 /* register the selection for both the clipboard and the primary */
1077 Atom clipboard;
1078
1079 free(sel.clip);
1080 sel.clip = str;
1081
1082 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
1083
1084 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1085 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1086 }
1087
1088 void
1089 brelease(XEvent *e) {
1090 if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1091 mousereport(e);
1092 return;
1093 }
1094
1095 if(e->xbutton.button == Button2) {
1096 selpaste(NULL);
1097 } else if(e->xbutton.button == Button1) {
1098 if(sel.mode < 2) {
1099 selclear(NULL);
1100 } else {
1101 getbuttoninfo(e);
1102 selcopy();
1103 }
1104 sel.mode = 0;
1105 tsetdirt(sel.nb.y, sel.ne.y);
1106 }
1107 }
1108
1109 void
1110 bmotion(XEvent *e) {
1111 int oldey, oldex, oldsby, oldsey;
1112
1113 if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1114 mousereport(e);
1115 return;
1116 }
1117
1118 if(!sel.mode)
1119 return;
1120
1121 sel.mode++;
1122 oldey = sel.oe.y;
1123 oldex = sel.oe.x;
1124 oldsby = sel.nb.y;
1125 oldsey = sel.ne.y;
1126 getbuttoninfo(e);
1127
1128 if(oldey != sel.oe.y || oldex != sel.oe.x)
1129 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1130 }
1131
1132 void
1133 die(const char *errstr, ...) {
1134 va_list ap;
1135
1136 va_start(ap, errstr);
1137 vfprintf(stderr, errstr, ap);
1138 va_end(ap);
1139 exit(EXIT_FAILURE);
1140 }
1141
1142 void
1143 execsh(void) {
1144 char **args;
1145 char *envshell = getenv("SHELL");
1146 const struct passwd *pass = getpwuid(getuid());
1147 char buf[sizeof(long) * 8 + 1];
1148
1149 unsetenv("COLUMNS");
1150 unsetenv("LINES");
1151 unsetenv("TERMCAP");
1152
1153 if(pass) {
1154 setenv("LOGNAME", pass->pw_name, 1);
1155 setenv("USER", pass->pw_name, 1);
1156 setenv("SHELL", pass->pw_shell, 0);
1157 setenv("HOME", pass->pw_dir, 0);
1158 }
1159
1160 snprintf(buf, sizeof(buf), "%lu", xw.win);
1161 setenv("WINDOWID", buf, 1);
1162
1163 signal(SIGCHLD, SIG_DFL);
1164 signal(SIGHUP, SIG_DFL);
1165 signal(SIGINT, SIG_DFL);
1166 signal(SIGQUIT, SIG_DFL);
1167 signal(SIGTERM, SIG_DFL);
1168 signal(SIGALRM, SIG_DFL);
1169
1170 DEFAULT(envshell, shell);
1171 setenv("TERM", termname, 1);
1172 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
1173 execvp(args[0], args);
1174 exit(EXIT_FAILURE);
1175 }
1176
1177 void
1178 sigchld(int a) {
1179 int stat, ret;
1180
1181 if(waitpid(pid, &stat, 0) < 0)
1182 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1183
1184 ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE;
1185 if (ret != EXIT_SUCCESS)
1186 die("child finished with error '%d'\n", stat);
1187 exit(EXIT_SUCCESS);
1188 }
1189
1190 void
1191 ttynew(void) {
1192 int m, s;
1193 struct winsize w = {term.row, term.col, 0, 0};
1194
1195 /* seems to work fine on linux, openbsd and freebsd */
1196 if(openpty(&m, &s, NULL, NULL, &w) < 0)
1197 die("openpty failed: %s\n", strerror(errno));
1198
1199 switch(pid = fork()) {
1200 case -1:
1201 die("fork failed\n");
1202 break;
1203 case 0:
1204 setsid(); /* create a new process group */
1205 dup2(s, STDIN_FILENO);
1206 dup2(s, STDOUT_FILENO);
1207 dup2(s, STDERR_FILENO);
1208 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1209 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1210 close(s);
1211 close(m);
1212 execsh();
1213 break;
1214 default:
1215 close(s);
1216 cmdfd = m;
1217 signal(SIGCHLD, sigchld);
1218 if(opt_io) {
1219 term.mode |= MODE_PRINT;
1220 iofd = (!strcmp(opt_io, "-")) ?
1221 STDOUT_FILENO :
1222 open(opt_io, O_WRONLY | O_CREAT, 0666);
1223 if(iofd < 0) {
1224 fprintf(stderr, "Error opening %s:%s\n",
1225 opt_io, strerror(errno));
1226 }
1227 }
1228 break;
1229 }
1230 }
1231
1232 void
1233 ttyread(void) {
1234 static char buf[BUFSIZ];
1235 static int buflen = 0;
1236 char *ptr;
1237 char s[UTF_SIZ];
1238 int charsize; /* size of utf8 char in bytes */
1239 long unicodep;
1240 int ret;
1241
1242 /* append read bytes to unprocessed bytes */
1243 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1244 die("Couldn't read from shell: %s\n", strerror(errno));
1245
1246 /* process every complete utf8 char */
1247 buflen += ret;
1248 ptr = buf;
1249 while((charsize = utf8decode(ptr, &unicodep, buflen))) {
1250 utf8encode(unicodep, s, UTF_SIZ);
1251 tputc(s, charsize);
1252 ptr += charsize;
1253 buflen -= charsize;
1254 }
1255
1256 /* keep any uncomplete utf8 char for the next call */
1257 memmove(buf, ptr, buflen);
1258 }
1259
1260 void
1261 ttywrite(const char *s, size_t n) {
1262 if(xwrite(cmdfd, s, n) == -1)
1263 die("write error on tty: %s\n", strerror(errno));
1264 }
1265
1266 void
1267 ttysend(char *s, size_t n) {
1268 ttywrite(s, n);
1269 if(IS_SET(MODE_ECHO))
1270 techo(s, n);
1271 }
1272
1273 void
1274 ttyresize(void) {
1275 struct winsize w;
1276
1277 w.ws_row = term.row;
1278 w.ws_col = term.col;
1279 w.ws_xpixel = xw.tw;
1280 w.ws_ypixel = xw.th;
1281 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1282 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1283 }
1284
1285 int
1286 tattrset(int attr) {
1287 int i, j;
1288
1289 for(i = 0; i < term.row-1; i++) {
1290 for(j = 0; j < term.col-1; j++) {
1291 if(term.line[i][j].mode & attr)
1292 return 1;
1293 }
1294 }
1295
1296 return 0;
1297 }
1298
1299 void
1300 tsetdirt(int top, int bot) {
1301 int i;
1302
1303 LIMIT(top, 0, term.row-1);
1304 LIMIT(bot, 0, term.row-1);
1305
1306 for(i = top; i <= bot; i++)
1307 term.dirty[i] = 1;
1308 }
1309
1310 void
1311 tsetdirtattr(int attr) {
1312 int i, j;
1313
1314 for(i = 0; i < term.row-1; i++) {
1315 for(j = 0; j < term.col-1; j++) {
1316 if(term.line[i][j].mode & attr) {
1317 tsetdirt(i, i);
1318 break;
1319 }
1320 }
1321 }
1322 }
1323
1324 void
1325 tfulldirt(void) {
1326 tsetdirt(0, term.row-1);
1327 }
1328
1329 void
1330 tcursor(int mode) {
1331 static TCursor c[2];
1332 bool alt = IS_SET(MODE_ALTSCREEN);
1333
1334 if(mode == CURSOR_SAVE) {
1335 c[alt] = term.c;
1336 } else if(mode == CURSOR_LOAD) {
1337 term.c = c[alt];
1338 tmoveto(c[alt].x, c[alt].y);
1339 }
1340 }
1341
1342 void
1343 treset(void) {
1344 uint i;
1345
1346 term.c = (TCursor){{
1347 .mode = ATTR_NULL,
1348 .fg = defaultfg,
1349 .bg = defaultbg
1350 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1351
1352 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1353 for(i = tabspaces; i < term.col; i += tabspaces)
1354 term.tabs[i] = 1;
1355 term.top = 0;
1356 term.bot = term.row - 1;
1357 term.mode = MODE_WRAP;
1358 memset(term.trantbl, sizeof(term.trantbl), CS_USA);
1359 term.charset = 0;
1360
1361 tclearregion(0, 0, term.col-1, term.row-1);
1362 tmoveto(0, 0);
1363 tcursor(CURSOR_SAVE);
1364 }
1365
1366 void
1367 tnew(int col, int row) {
1368 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1369 tresize(col, row);
1370 term.numlock = 1;
1371
1372 treset();
1373 }
1374
1375 void
1376 tswapscreen(void) {
1377 Line *tmp = term.line;
1378
1379 term.line = term.alt;
1380 term.alt = tmp;
1381 term.mode ^= MODE_ALTSCREEN;
1382 tfulldirt();
1383 }
1384
1385 void
1386 tscrolldown(int orig, int n) {
1387 int i;
1388 Line temp;
1389
1390 LIMIT(n, 0, term.bot-orig+1);
1391
1392 tsetdirt(orig, term.bot-n);
1393 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1394
1395 for(i = term.bot; i >= orig+n; i--) {
1396 temp = term.line[i];
1397 term.line[i] = term.line[i-n];
1398 term.line[i-n] = temp;
1399 }
1400
1401 selscroll(orig, n);
1402 }
1403
1404 void
1405 tscrollup(int orig, int n) {
1406 int i;
1407 Line temp;
1408
1409 LIMIT(n, 0, term.bot-orig+1);
1410
1411 tclearregion(0, orig, term.col-1, orig+n-1);
1412 tsetdirt(orig+n, term.bot);
1413
1414 for(i = orig; i <= term.bot-n; i++) {
1415 temp = term.line[i];
1416 term.line[i] = term.line[i+n];
1417 term.line[i+n] = temp;
1418 }
1419
1420 selscroll(orig, -n);
1421 }
1422
1423 void
1424 selscroll(int orig, int n) {
1425 if(sel.ob.x == -1)
1426 return;
1427
1428 if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1429 if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1430 selclear(NULL);
1431 return;
1432 }
1433 if(sel.type == SEL_RECTANGULAR) {
1434 if(sel.ob.y < term.top)
1435 sel.ob.y = term.top;
1436 if(sel.oe.y > term.bot)
1437 sel.oe.y = term.bot;
1438 } else {
1439 if(sel.ob.y < term.top) {
1440 sel.ob.y = term.top;
1441 sel.ob.x = 0;
1442 }
1443 if(sel.oe.y > term.bot) {
1444 sel.oe.y = term.bot;
1445 sel.oe.x = term.col;
1446 }
1447 }
1448 selnormalize();
1449 }
1450 }
1451
1452 void
1453 tnewline(int first_col) {
1454 int y = term.c.y;
1455
1456 if(y == term.bot) {
1457 tscrollup(term.top, 1);
1458 } else {
1459 y++;
1460 }
1461 tmoveto(first_col ? 0 : term.c.x, y);
1462 }
1463
1464 void
1465 csiparse(void) {
1466 char *p = csiescseq.buf, *np;
1467 long int v;
1468
1469 csiescseq.narg = 0;
1470 if(*p == '?') {
1471 csiescseq.priv = 1;
1472 p++;
1473 }
1474
1475 csiescseq.buf[csiescseq.len] = '\0';
1476 while(p < csiescseq.buf+csiescseq.len) {
1477 np = NULL;
1478 v = strtol(p, &np, 10);
1479 if(np == p)
1480 v = 0;
1481 if(v == LONG_MAX || v == LONG_MIN)
1482 v = -1;
1483 csiescseq.arg[csiescseq.narg++] = v;
1484 p = np;
1485 if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1486 break;
1487 p++;
1488 }
1489 csiescseq.mode = *p;
1490 }
1491
1492 /* for absolute user moves, when decom is set */
1493 void
1494 tmoveato(int x, int y) {
1495 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1496 }
1497
1498 void
1499 tmoveto(int x, int y) {
1500 int miny, maxy;
1501
1502 if(term.c.state & CURSOR_ORIGIN) {
1503 miny = term.top;
1504 maxy = term.bot;
1505 } else {
1506 miny = 0;
1507 maxy = term.row - 1;
1508 }
1509 LIMIT(x, 0, term.col-1);
1510 LIMIT(y, miny, maxy);
1511 term.c.state &= ~CURSOR_WRAPNEXT;
1512 term.c.x = x;
1513 term.c.y = y;
1514 }
1515
1516 void
1517 tsetchar(char *c, Glyph *attr, int x, int y) {
1518 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1519 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1520 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1521 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1522 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1523 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1524 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1525 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1526 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1527 };
1528
1529 /*
1530 * The table is proudly stolen from rxvt.
1531 */
1532 if(term.trantbl[term.charset] == CS_GRAPHIC0) {
1533 if(BETWEEN(c[0], 0x41, 0x7e) && vt100_0[c[0] - 0x41]) {
1534 c = vt100_0[c[0] - 0x41];
1535 }
1536 }
1537
1538 if(term.line[y][x].mode & ATTR_WIDE) {
1539 if(x+1 < term.col) {
1540 term.line[y][x+1].c[0] = ' ';
1541 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1542 }
1543 } else if(term.line[y][x].mode & ATTR_WDUMMY) {
1544 term.line[y][x-1].c[0] = ' ';
1545 term.line[y][x-1].mode &= ~ATTR_WIDE;
1546 }
1547
1548 term.dirty[y] = 1;
1549 term.line[y][x] = *attr;
1550 memcpy(term.line[y][x].c, c, UTF_SIZ);
1551 }
1552
1553 void
1554 tclearregion(int x1, int y1, int x2, int y2) {
1555 int x, y, temp;
1556 Glyph *gp;
1557
1558 if(x1 > x2)
1559 temp = x1, x1 = x2, x2 = temp;
1560 if(y1 > y2)
1561 temp = y1, y1 = y2, y2 = temp;
1562
1563 LIMIT(x1, 0, term.col-1);
1564 LIMIT(x2, 0, term.col-1);
1565 LIMIT(y1, 0, term.row-1);
1566 LIMIT(y2, 0, term.row-1);
1567
1568 for(y = y1; y <= y2; y++) {
1569 term.dirty[y] = 1;
1570 for(x = x1; x <= x2; x++) {
1571 gp = &term.line[y][x];
1572 if(selected(x, y))
1573 selclear(NULL);
1574 gp->fg = term.c.attr.fg;
1575 gp->bg = term.c.attr.bg;
1576 gp->mode = 0;
1577 memcpy(gp->c, " ", 2);
1578 }
1579 }
1580 }
1581
1582 void
1583 tdeletechar(int n) {
1584 int dst, src, size;
1585 Glyph *line;
1586
1587 LIMIT(n, 0, term.col - term.c.x);
1588
1589 dst = term.c.x;
1590 src = term.c.x + n;
1591 size = term.col - src;
1592 line = term.line[term.c.y];
1593
1594 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1595 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1596 }
1597
1598 void
1599 tinsertblank(int n) {
1600 int dst, src, size;
1601 Glyph *line;
1602
1603 LIMIT(n, 0, term.col - term.c.x);
1604
1605 dst = term.c.x + n;
1606 src = term.c.x;
1607 size = term.col - dst;
1608 line = term.line[term.c.y];
1609
1610 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1611 tclearregion(src, term.c.y, dst - 1, term.c.y);
1612 }
1613
1614 void
1615 tinsertblankline(int n) {
1616 if(BETWEEN(term.c.y, term.top, term.bot))
1617 tscrolldown(term.c.y, n);
1618 }
1619
1620 void
1621 tdeleteline(int n) {
1622 if(BETWEEN(term.c.y, term.top, term.bot))
1623 tscrollup(term.c.y, n);
1624 }
1625
1626 int32_t
1627 tdefcolor(int *attr, int *npar, int l) {
1628 int32_t idx = -1;
1629 uint r, g, b;
1630
1631 switch (attr[*npar + 1]) {
1632 case 2: /* direct color in RGB space */
1633 if (*npar + 4 >= l) {
1634 fprintf(stderr,
1635 "erresc(38): Incorrect number of parameters (%d)\n",
1636 *npar);
1637 break;
1638 }
1639 r = attr[*npar + 2];
1640 g = attr[*npar + 3];
1641 b = attr[*npar + 4];
1642 *npar += 4;
1643 if(!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1644 fprintf(stderr, "erresc: bad rgb color (%d,%d,%d)\n",
1645 r, g, b);
1646 else
1647 idx = TRUECOLOR(r, g, b);
1648 break;
1649 case 5: /* indexed color */
1650 if (*npar + 2 >= l) {
1651 fprintf(stderr,
1652 "erresc(38): Incorrect number of parameters (%d)\n",
1653 *npar);
1654 break;
1655 }
1656 *npar += 2;
1657 if(!BETWEEN(attr[*npar], 0, 255))
1658 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1659 else
1660 idx = attr[*npar];
1661 break;
1662 case 0: /* implemented defined (only foreground) */
1663 case 1: /* transparent */
1664 case 3: /* direct color in CMY space */
1665 case 4: /* direct color in CMYK space */
1666 default:
1667 fprintf(stderr,
1668 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1669 break;
1670 }
1671
1672 return idx;
1673 }
1674
1675 void
1676 tsetattr(int *attr, int l) {
1677 int i;
1678 int32_t idx;
1679
1680 for(i = 0; i < l; i++) {
1681 switch(attr[i]) {
1682 case 0:
1683 term.c.attr.mode &= ~(
1684 ATTR_BOLD |
1685 ATTR_FAINT |
1686 ATTR_ITALIC |
1687 ATTR_UNDERLINE |
1688 ATTR_BLINK |
1689 ATTR_REVERSE |
1690 ATTR_INVISIBLE |
1691 ATTR_STRUCK );
1692 term.c.attr.fg = defaultfg;
1693 term.c.attr.bg = defaultbg;
1694 break;
1695 case 1:
1696 term.c.attr.mode |= ATTR_BOLD;
1697 break;
1698 case 2:
1699 term.c.attr.mode |= ATTR_FAINT;
1700 break;
1701 case 3:
1702 term.c.attr.mode |= ATTR_ITALIC;
1703 break;
1704 case 4:
1705 term.c.attr.mode |= ATTR_UNDERLINE;
1706 break;
1707 case 5: /* slow blink */
1708 /* FALLTHROUGH */
1709 case 6: /* rapid blink */
1710 term.c.attr.mode |= ATTR_BLINK;
1711 break;
1712 case 7:
1713 term.c.attr.mode |= ATTR_REVERSE;
1714 break;
1715 case 8:
1716 term.c.attr.mode |= ATTR_INVISIBLE;
1717 break;
1718 case 9:
1719 term.c.attr.mode |= ATTR_STRUCK;
1720 break;
1721 case 22:
1722 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
1723 break;
1724 case 23:
1725 term.c.attr.mode &= ~ATTR_ITALIC;
1726 break;
1727 case 24:
1728 term.c.attr.mode &= ~ATTR_UNDERLINE;
1729 break;
1730 case 25:
1731 term.c.attr.mode &= ~ATTR_BLINK;
1732 break;
1733 case 27:
1734 term.c.attr.mode &= ~ATTR_REVERSE;
1735 break;
1736 case 28:
1737 term.c.attr.mode &= ~ATTR_INVISIBLE;
1738 break;
1739 case 29:
1740 term.c.attr.mode &= ~ATTR_STRUCK;
1741 break;
1742 case 38:
1743 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1744 term.c.attr.fg = idx;
1745 break;
1746 case 39:
1747 term.c.attr.fg = defaultfg;
1748 break;
1749 case 48:
1750 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1751 term.c.attr.bg = idx;
1752 break;
1753 case 49:
1754 term.c.attr.bg = defaultbg;
1755 break;
1756 default:
1757 if(BETWEEN(attr[i], 30, 37)) {
1758 term.c.attr.fg = attr[i] - 30;
1759 } else if(BETWEEN(attr[i], 40, 47)) {
1760 term.c.attr.bg = attr[i] - 40;
1761 } else if(BETWEEN(attr[i], 90, 97)) {
1762 term.c.attr.fg = attr[i] - 90 + 8;
1763 } else if(BETWEEN(attr[i], 100, 107)) {
1764 term.c.attr.bg = attr[i] - 100 + 8;
1765 } else {
1766 fprintf(stderr,
1767 "erresc(default): gfx attr %d unknown\n",
1768 attr[i]), csidump();
1769 }
1770 break;
1771 }
1772 }
1773 }
1774
1775 void
1776 tsetscroll(int t, int b) {
1777 int temp;
1778
1779 LIMIT(t, 0, term.row-1);
1780 LIMIT(b, 0, term.row-1);
1781 if(t > b) {
1782 temp = t;
1783 t = b;
1784 b = temp;
1785 }
1786 term.top = t;
1787 term.bot = b;
1788 }
1789
1790 void
1791 tsetmode(bool priv, bool set, int *args, int narg) {
1792 int *lim, mode;
1793 bool alt;
1794
1795 for(lim = args + narg; args < lim; ++args) {
1796 if(priv) {
1797 switch(*args) {
1798 case 1: /* DECCKM -- Cursor key */
1799 MODBIT(term.mode, set, MODE_APPCURSOR);
1800 break;
1801 case 5: /* DECSCNM -- Reverse video */
1802 mode = term.mode;
1803 MODBIT(term.mode, set, MODE_REVERSE);
1804 if(mode != term.mode)
1805 redraw(REDRAW_TIMEOUT);
1806 break;
1807 case 6: /* DECOM -- Origin */
1808 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1809 tmoveato(0, 0);
1810 break;
1811 case 7: /* DECAWM -- Auto wrap */
1812 MODBIT(term.mode, set, MODE_WRAP);
1813 break;
1814 case 0: /* Error (IGNORED) */
1815 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1816 case 3: /* DECCOLM -- Column (IGNORED) */
1817 case 4: /* DECSCLM -- Scroll (IGNORED) */
1818 case 8: /* DECARM -- Auto repeat (IGNORED) */
1819 case 18: /* DECPFF -- Printer feed (IGNORED) */
1820 case 19: /* DECPEX -- Printer extent (IGNORED) */
1821 case 42: /* DECNRCM -- National characters (IGNORED) */
1822 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1823 break;
1824 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1825 MODBIT(term.mode, !set, MODE_HIDE);
1826 break;
1827 case 9: /* X10 mouse compatibility mode */
1828 xsetpointermotion(0);
1829 MODBIT(term.mode, 0, MODE_MOUSE);
1830 MODBIT(term.mode, set, MODE_MOUSEX10);
1831 break;
1832 case 1000: /* 1000: report button press */
1833 xsetpointermotion(0);
1834 MODBIT(term.mode, 0, MODE_MOUSE);
1835 MODBIT(term.mode, set, MODE_MOUSEBTN);
1836 break;
1837 case 1002: /* 1002: report motion on button press */
1838 xsetpointermotion(0);
1839 MODBIT(term.mode, 0, MODE_MOUSE);
1840 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1841 break;
1842 case 1003: /* 1003: enable all mouse motions */
1843 xsetpointermotion(set);
1844 MODBIT(term.mode, 0, MODE_MOUSE);
1845 MODBIT(term.mode, set, MODE_MOUSEMANY);
1846 break;
1847 case 1004: /* 1004: send focus events to tty */
1848 MODBIT(term.mode, set, MODE_FOCUS);
1849 break;
1850 case 1006: /* 1006: extended reporting mode */
1851 MODBIT(term.mode, set, MODE_MOUSESGR);
1852 break;
1853 case 1034:
1854 MODBIT(term.mode, set, MODE_8BIT);
1855 break;
1856 case 1049: /* swap screen & set/restore cursor as xterm */
1857 if (!allowaltscreen)
1858 break;
1859 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1860 /* FALLTHROUGH */
1861 case 47: /* swap screen */
1862 case 1047:
1863 if (!allowaltscreen)
1864 break;
1865 alt = IS_SET(MODE_ALTSCREEN);
1866 if(alt) {
1867 tclearregion(0, 0, term.col-1,
1868 term.row-1);
1869 }
1870 if(set ^ alt) /* set is always 1 or 0 */
1871 tswapscreen();
1872 if(*args != 1049)
1873 break;
1874 /* FALLTHROUGH */
1875 case 1048:
1876 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1877 break;
1878 case 2004: /* 2004: bracketed paste mode */
1879 MODBIT(term.mode, set, MODE_BRCKTPASTE);
1880 break;
1881 /* Not implemented mouse modes. See comments there. */
1882 case 1001: /* mouse highlight mode; can hang the
1883 terminal by design when implemented. */
1884 case 1005: /* UTF-8 mouse mode; will confuse
1885 applications not supporting UTF-8
1886 and luit. */
1887 case 1015: /* urxvt mangled mouse mode; incompatible
1888 and can be mistaken for other control
1889 codes. */
1890 default:
1891 fprintf(stderr,
1892 "erresc: unknown private set/reset mode %d\n",
1893 *args);
1894 break;
1895 }
1896 } else {
1897 switch(*args) {
1898 case 0: /* Error (IGNORED) */
1899 break;
1900 case 2: /* KAM -- keyboard action */
1901 MODBIT(term.mode, set, MODE_KBDLOCK);
1902 break;
1903 case 4: /* IRM -- Insertion-replacement */
1904 MODBIT(term.mode, set, MODE_INSERT);
1905 break;
1906 case 12: /* SRM -- Send/Receive */
1907 MODBIT(term.mode, !set, MODE_ECHO);
1908 break;
1909 case 20: /* LNM -- Linefeed/new line */
1910 MODBIT(term.mode, set, MODE_CRLF);
1911 break;
1912 default:
1913 fprintf(stderr,
1914 "erresc: unknown set/reset mode %d\n",
1915 *args);
1916 break;
1917 }
1918 }
1919 }
1920 }
1921
1922 void
1923 csihandle(void) {
1924 char buf[40];
1925 int len;
1926
1927 switch(csiescseq.mode) {
1928 default:
1929 unknown:
1930 fprintf(stderr, "erresc: unknown csi ");
1931 csidump();
1932 /* die(""); */
1933 break;
1934 case '@': /* ICH -- Insert <n> blank char */
1935 DEFAULT(csiescseq.arg[0], 1);
1936 tinsertblank(csiescseq.arg[0]);
1937 break;
1938 case 'A': /* CUU -- Cursor <n> Up */
1939 DEFAULT(csiescseq.arg[0], 1);
1940 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1941 break;
1942 case 'B': /* CUD -- Cursor <n> Down */
1943 case 'e': /* VPR --Cursor <n> Down */
1944 DEFAULT(csiescseq.arg[0], 1);
1945 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1946 break;
1947 case 'i': /* MC -- Media Copy */
1948 switch(csiescseq.arg[0]) {
1949 case 0:
1950 tdump();
1951 break;
1952 case 1:
1953 tdumpline(term.c.y);
1954 break;
1955 case 2:
1956 tdumpsel();
1957 break;
1958 case 4:
1959 term.mode &= ~MODE_PRINT;
1960 break;
1961 case 5:
1962 term.mode |= MODE_PRINT;
1963 break;
1964 }
1965 break;
1966 case 'c': /* DA -- Device Attributes */
1967 if(csiescseq.arg[0] == 0)
1968 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1969 break;
1970 case 'C': /* CUF -- Cursor <n> Forward */
1971 case 'a': /* HPR -- Cursor <n> Forward */
1972 DEFAULT(csiescseq.arg[0], 1);
1973 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1974 break;
1975 case 'D': /* CUB -- Cursor <n> Backward */
1976 DEFAULT(csiescseq.arg[0], 1);
1977 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1978 break;
1979 case 'E': /* CNL -- Cursor <n> Down and first col */
1980 DEFAULT(csiescseq.arg[0], 1);
1981 tmoveto(0, term.c.y+csiescseq.arg[0]);
1982 break;
1983 case 'F': /* CPL -- Cursor <n> Up and first col */
1984 DEFAULT(csiescseq.arg[0], 1);
1985 tmoveto(0, term.c.y-csiescseq.arg[0]);
1986 break;
1987 case 'g': /* TBC -- Tabulation clear */
1988 switch(csiescseq.arg[0]) {
1989 case 0: /* clear current tab stop */
1990 term.tabs[term.c.x] = 0;
1991 break;
1992 case 3: /* clear all the tabs */
1993 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1994 break;
1995 default:
1996 goto unknown;
1997 }
1998 break;
1999 case 'G': /* CHA -- Move to <col> */
2000 case '`': /* HPA */
2001 DEFAULT(csiescseq.arg[0], 1);
2002 tmoveto(csiescseq.arg[0]-1, term.c.y);
2003 break;
2004 case 'H': /* CUP -- Move to <row> <col> */
2005 case 'f': /* HVP */
2006 DEFAULT(csiescseq.arg[0], 1);
2007 DEFAULT(csiescseq.arg[1], 1);
2008 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2009 break;
2010 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2011 DEFAULT(csiescseq.arg[0], 1);
2012 tputtab(csiescseq.arg[0]);
2013 break;
2014 case 'J': /* ED -- Clear screen */
2015 selclear(NULL);
2016 switch(csiescseq.arg[0]) {
2017 case 0: /* below */
2018 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2019 if(term.c.y < term.row-1) {
2020 tclearregion(0, term.c.y+1, term.col-1,
2021 term.row-1);
2022 }
2023 break;
2024 case 1: /* above */
2025 if(term.c.y > 1)
2026 tclearregion(0, 0, term.col-1, term.c.y-1);
2027 tclearregion(0, term.c.y, term.c.x, term.c.y);
2028 break;
2029 case 2: /* all */
2030 tclearregion(0, 0, term.col-1, term.row-1);
2031 break;
2032 default:
2033 goto unknown;
2034 }
2035 break;
2036 case 'K': /* EL -- Clear line */
2037 switch(csiescseq.arg[0]) {
2038 case 0: /* right */
2039 tclearregion(term.c.x, term.c.y, term.col-1,
2040 term.c.y);
2041 break;
2042 case 1: /* left */
2043 tclearregion(0, term.c.y, term.c.x, term.c.y);
2044 break;
2045 case 2: /* all */
2046 tclearregion(0, term.c.y, term.col-1, term.c.y);
2047 break;
2048 }
2049 break;
2050 case 'S': /* SU -- Scroll <n> line up */
2051 DEFAULT(csiescseq.arg[0], 1);
2052 tscrollup(term.top, csiescseq.arg[0]);
2053 break;
2054 case 'T': /* SD -- Scroll <n> line down */
2055 DEFAULT(csiescseq.arg[0], 1);
2056 tscrolldown(term.top, csiescseq.arg[0]);
2057 break;
2058 case 'L': /* IL -- Insert <n> blank lines */
2059 DEFAULT(csiescseq.arg[0], 1);
2060 tinsertblankline(csiescseq.arg[0]);
2061 break;
2062 case 'l': /* RM -- Reset Mode */
2063 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2064 break;
2065 case 'M': /* DL -- Delete <n> lines */
2066 DEFAULT(csiescseq.arg[0], 1);
2067 tdeleteline(csiescseq.arg[0]);
2068 break;
2069 case 'X': /* ECH -- Erase <n> char */
2070 DEFAULT(csiescseq.arg[0], 1);
2071 tclearregion(term.c.x, term.c.y,
2072 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2073 break;
2074 case 'P': /* DCH -- Delete <n> char */
2075 DEFAULT(csiescseq.arg[0], 1);
2076 tdeletechar(csiescseq.arg[0]);
2077 break;
2078 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2079 DEFAULT(csiescseq.arg[0], 1);
2080 tputtab(-csiescseq.arg[0]);
2081 break;
2082 case 'd': /* VPA -- Move to <row> */
2083 DEFAULT(csiescseq.arg[0], 1);
2084 tmoveato(term.c.x, csiescseq.arg[0]-1);
2085 break;
2086 case 'h': /* SM -- Set terminal mode */
2087 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2088 break;
2089 case 'm': /* SGR -- Terminal attribute (color) */
2090 tsetattr(csiescseq.arg, csiescseq.narg);
2091 break;
2092 case 'n': /* DSR – Device Status Report (cursor position) */
2093 if (csiescseq.arg[0] == 6) {
2094 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2095 term.c.y+1, term.c.x+1);
2096 ttywrite(buf, len);
2097 }
2098 break;
2099 case 'r': /* DECSTBM -- Set Scrolling Region */
2100 if(csiescseq.priv) {
2101 goto unknown;
2102 } else {
2103 DEFAULT(csiescseq.arg[0], 1);
2104 DEFAULT(csiescseq.arg[1], term.row);
2105 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2106 tmoveato(0, 0);
2107 }
2108 break;
2109 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2110 tcursor(CURSOR_SAVE);
2111 break;
2112 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2113 tcursor(CURSOR_LOAD);
2114 break;
2115 }
2116 }
2117
2118 void
2119 csidump(void) {
2120 int i;
2121 uint c;
2122
2123 printf("ESC[");
2124 for(i = 0; i < csiescseq.len; i++) {
2125 c = csiescseq.buf[i] & 0xff;
2126 if(isprint(c)) {
2127 putchar(c);
2128 } else if(c == '\n') {
2129 printf("(\\n)");
2130 } else if(c == '\r') {
2131 printf("(\\r)");
2132 } else if(c == 0x1b) {
2133 printf("(\\e)");
2134 } else {
2135 printf("(%02x)", c);
2136 }
2137 }
2138 putchar('\n');
2139 }
2140
2141 void
2142 csireset(void) {
2143 memset(&csiescseq, 0, sizeof(csiescseq));
2144 }
2145
2146 void
2147 strhandle(void) {
2148 char *p = NULL;
2149 int j, narg, par;
2150
2151 term.esc &= ~(ESC_STR_END|ESC_STR);
2152 strparse();
2153 narg = strescseq.narg;
2154 par = atoi(strescseq.args[0]);
2155
2156 switch(strescseq.type) {
2157 case ']': /* OSC -- Operating System Command */
2158 switch(par) {
2159 case 0:
2160 case 1:
2161 case 2:
2162 if(narg > 1)
2163 xsettitle(strescseq.args[1]);
2164 return;
2165 case 4: /* color set */
2166 if(narg < 3)
2167 break;
2168 p = strescseq.args[2];
2169 /* FALLTHROUGH */
2170 case 104: /* color reset, here p = NULL */
2171 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2172 if(xsetcolorname(j, p)) {
2173 fprintf(stderr, "erresc: invalid color %s\n", p);
2174 } else {
2175 /*
2176 * TODO if defaultbg color is changed, borders
2177 * are dirty
2178 */
2179 redraw(0);
2180 }
2181 return;
2182 }
2183 break;
2184 case 'k': /* old title set compatibility */
2185 xsettitle(strescseq.args[0]);
2186 return;
2187 case 'P': /* DCS -- Device Control String */
2188 case '_': /* APC -- Application Program Command */
2189 case '^': /* PM -- Privacy Message */
2190 return;
2191 }
2192
2193 fprintf(stderr, "erresc: unknown str ");
2194 strdump();
2195 }
2196
2197 void
2198 strparse(void) {
2199 char *p = strescseq.buf;
2200
2201 strescseq.narg = 0;
2202 strescseq.buf[strescseq.len] = '\0';
2203 while(p && strescseq.narg < STR_ARG_SIZ)
2204 strescseq.args[strescseq.narg++] = strsep(&p, ";");
2205 }
2206
2207 void
2208 strdump(void) {
2209 int i;
2210 uint c;
2211
2212 printf("ESC%c", strescseq.type);
2213 for(i = 0; i < strescseq.len; i++) {
2214 c = strescseq.buf[i] & 0xff;
2215 if(c == '\0') {
2216 return;
2217 } else if(isprint(c)) {
2218 putchar(c);
2219 } else if(c == '\n') {
2220 printf("(\\n)");
2221 } else if(c == '\r') {
2222 printf("(\\r)");
2223 } else if(c == 0x1b) {
2224 printf("(\\e)");
2225 } else {
2226 printf("(%02x)", c);
2227 }
2228 }
2229 printf("ESC\\\n");
2230 }
2231
2232 void
2233 strreset(void) {
2234 memset(&strescseq, 0, sizeof(strescseq));
2235 }
2236
2237 void
2238 tprinter(char *s, size_t len) {
2239 if(iofd != -1 && xwrite(iofd, s, len) < 0) {
2240 fprintf(stderr, "Error writing in %s:%s\n",
2241 opt_io, strerror(errno));
2242 close(iofd);
2243 iofd = -1;
2244 }
2245 }
2246
2247 void
2248 toggleprinter(const Arg *arg) {
2249 term.mode ^= MODE_PRINT;
2250 }
2251
2252 void
2253 printscreen(const Arg *arg) {
2254 tdump();
2255 }
2256
2257 void
2258 printsel(const Arg *arg) {
2259 tdumpsel();
2260 }
2261
2262 void
2263 tdumpsel(void) {
2264 char *ptr;
2265
2266 if((ptr = getsel())) {
2267 tprinter(ptr, strlen(ptr));
2268 free(ptr);
2269 }
2270 }
2271
2272 void
2273 tdumpline(int n) {
2274 Glyph *bp, *end;
2275
2276 bp = &term.line[n][0];
2277 end = &bp[MIN(tlinelen(n), term.col) - 1];
2278 if(bp != end || bp->c[0] != ' ') {
2279 for( ;bp <= end; ++bp)
2280 tprinter(bp->c, utf8len(bp->c));
2281 }
2282 tprinter("\n", 1);
2283 }
2284
2285 void
2286 tdump(void) {
2287 int i;
2288
2289 for(i = 0; i < term.row; ++i)
2290 tdumpline(i);
2291 }
2292
2293 void
2294 tputtab(int n) {
2295 uint x = term.c.x;
2296
2297 if(n > 0) {
2298 while(x < term.col && n--)
2299 for(++x; x < term.col && !term.tabs[x]; ++x)
2300 /* nothing */ ;
2301 } else if(n < 0) {
2302 while(x > 0 && n++)
2303 for(--x; x > 0 && !term.tabs[x]; --x)
2304 /* nothing */ ;
2305 }
2306 tmoveto(x, term.c.y);
2307 }
2308
2309 void
2310 techo(char *buf, int len) {
2311 for(; len > 0; buf++, len--) {
2312 char c = *buf;
2313
2314 if(ISCONTROL(c)) { /* control code */
2315 if(c & 0x80) {
2316 c &= 0x7f;
2317 tputc("^", 1);
2318 tputc("[", 1);
2319 } else if(c != '\n' && c != '\r' && c != '\t') {
2320 c ^= '\x40';
2321 tputc("^", 1);
2322 }
2323 tputc(&c, 1);
2324 } else {
2325 break;
2326 }
2327 }
2328 if(len)
2329 tputc(buf, len);
2330 }
2331
2332 void
2333 tdeftran(char ascii) {
2334 static char cs[] = "0B";
2335 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2336 char *p;
2337
2338 if((p = strchr(cs, ascii)) == NULL) {
2339 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2340 } else {
2341 term.trantbl[term.icharset] = vcs[p - cs];
2342 }
2343 }
2344
2345 void
2346 tstrsequence(uchar c) {
2347 if (c & 0x80) {
2348 switch (c) {
2349 case 0x90: /* DCS -- Device Control String */
2350 c = 'P';
2351 break;
2352 case 0x9f: /* APC -- Application Program Command */
2353 c = '_';
2354 break;
2355 case 0x9e: /* PM -- Privacy Message */
2356 c = '^';
2357 break;
2358 case 0x9d: /* OSC -- Operating System Command */
2359 c = ']';
2360 break;
2361 }
2362 }
2363 strreset();
2364 strescseq.type = c;
2365 term.esc |= ESC_STR;
2366 return;
2367 }
2368
2369 void
2370 tcontrolcode(uchar ascii) {
2371 static char question[UTF_SIZ] = "?";
2372
2373 switch(ascii) {
2374 case '\t': /* HT */
2375 tputtab(1);
2376 return;
2377 case '\b': /* BS */
2378 tmoveto(term.c.x-1, term.c.y);
2379 return;
2380 case '\r': /* CR */
2381 tmoveto(0, term.c.y);
2382 return;
2383 case '\f': /* LF */
2384 case '\v': /* VT */
2385 case '\n': /* LF */
2386 /* go to first col if the mode is set */
2387 tnewline(IS_SET(MODE_CRLF));
2388 return;
2389 case '\a': /* BEL */
2390 if(term.esc & ESC_STR_END) {
2391 /* backwards compatibility to xterm */
2392 strhandle();
2393 } else {
2394 if(!(xw.state & WIN_FOCUSED))
2395 xseturgency(1);
2396 if (bellvolume)
2397 XBell(xw.dpy, bellvolume);
2398 }
2399 break;
2400 case '\033': /* ESC */
2401 csireset();
2402 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2403 term.esc |= ESC_START;
2404 return;
2405 case '\016': /* SO */
2406 term.charset = 0;
2407 return;
2408 case '\017': /* SI */
2409 term.charset = 1;
2410 return;
2411 case '\032': /* SUB */
2412 tsetchar(question, &term.c.attr, term.c.x, term.c.y);
2413 case '\030': /* CAN */
2414 csireset();
2415 break;
2416 case '\005': /* ENQ (IGNORED) */
2417 case '\000': /* NUL (IGNORED) */
2418 case '\021': /* XON (IGNORED) */
2419 case '\023': /* XOFF (IGNORED) */
2420 case 0177: /* DEL (IGNORED) */
2421 return;
2422 case 0x84: /* TODO: IND */
2423 break;
2424 case 0x85: /* NEL -- Next line */
2425 tnewline(1); /* always go to first col */
2426 break;
2427 case 0x88: /* HTS -- Horizontal tab stop */
2428 term.tabs[term.c.x] = 1;
2429 break;
2430 case 0x8d: /* TODO: RI */
2431 case 0x8e: /* TODO: SS2 */
2432 case 0x8f: /* TODO: SS3 */
2433 case 0x98: /* TODO: SOS */
2434 break;
2435 case 0x9a: /* DECID -- Identify Terminal */
2436 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2437 break;
2438 case 0x9b: /* TODO: CSI */
2439 case 0x9c: /* TODO: ST */
2440 break;
2441 case 0x90: /* DCS -- Device Control String */
2442 case 0x9f: /* APC -- Application Program Command */
2443 case 0x9e: /* PM -- Privacy Message */
2444 case 0x9d: /* OSC -- Operating System Command */
2445 tstrsequence(ascii);
2446 return;
2447 }
2448 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2449 term.esc &= ~(ESC_STR_END|ESC_STR);
2450 return;
2451 }
2452
2453 void
2454 tdectest(char c) {
2455 static char E[UTF_SIZ] = "E";
2456 int x, y;
2457
2458 if(c == '8') { /* DEC screen alignment test. */
2459 for(x = 0; x < term.col; ++x) {
2460 for(y = 0; y < term.row; ++y)
2461 tsetchar(E, &term.c.attr, x, y);
2462 }
2463 }
2464 }
2465
2466 void
2467 tputc(char *c, int len) {
2468 uchar ascii;
2469 bool control;
2470 long unicodep;
2471 int width;
2472 Glyph *gp;
2473
2474 if(len == 1) {
2475 width = 1;
2476 unicodep = ascii = *c;
2477 } else {
2478 utf8decode(c, &unicodep, UTF_SIZ);
2479 width = wcwidth(unicodep);
2480 control = ISCONTROLC1(unicodep);
2481 ascii = unicodep;
2482 }
2483
2484 if(IS_SET(MODE_PRINT))
2485 tprinter(c, len);
2486 control = ISCONTROL(unicodep);
2487
2488 /*
2489 * STR sequence must be checked before anything else
2490 * because it uses all following characters until it
2491 * receives a ESC, a SUB, a ST or any other C1 control
2492 * character.
2493 */
2494 if(term.esc & ESC_STR) {
2495 if(width == 1 &&
2496 (ascii == '\a' || ascii == 030 ||
2497 ascii == 032 || ascii == 033 ||
2498 ISCONTROLC1(unicodep))) {
2499 term.esc &= ~(ESC_START|ESC_STR);
2500 term.esc |= ESC_STR_END;
2501 } else if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
2502 memmove(&strescseq.buf[strescseq.len], c, len);
2503 strescseq.len += len;
2504 return;
2505 } else {
2506 /*
2507 * Here is a bug in terminals. If the user never sends
2508 * some code to stop the str or esc command, then st
2509 * will stop responding. But this is better than
2510 * silently failing with unknown characters. At least
2511 * then users will report back.
2512 *
2513 * In the case users ever get fixed, here is the code:
2514 */
2515 /*
2516 * term.esc = 0;
2517 * strhandle();
2518 */
2519 return;
2520 }
2521 }
2522
2523 /*
2524 * Actions of control codes must be performed as soon they arrive
2525 * because they can be embedded inside a control sequence, and
2526 * they must not cause conflicts with sequences.
2527 */
2528 if(control) {
2529 tcontrolcode(ascii);
2530 /*
2531 * control codes are not shown ever
2532 */
2533 return;
2534 } else if(term.esc & ESC_START) {
2535 if(term.esc & ESC_CSI) {
2536 csiescseq.buf[csiescseq.len++] = ascii;
2537 if(BETWEEN(ascii, 0x40, 0x7E)
2538 || csiescseq.len >= \
2539 sizeof(csiescseq.buf)-1) {
2540 term.esc = 0;
2541 csiparse();
2542 csihandle();
2543 }
2544 return;
2545 } else if(term.esc & ESC_ALTCHARSET) {
2546 tdeftran(ascii);
2547 } else if(term.esc & ESC_TEST) {
2548 tdectest(ascii);
2549 } else {
2550 switch(ascii) {
2551 case '[':
2552 term.esc |= ESC_CSI;
2553 return;
2554 case '#':
2555 term.esc |= ESC_TEST;
2556 return;
2557 case 'P': /* DCS -- Device Control String */
2558 case '_': /* APC -- Application Program Command */
2559 case '^': /* PM -- Privacy Message */
2560 case ']': /* OSC -- Operating System Command */
2561 case 'k': /* old title set compatibility */
2562 tstrsequence(ascii);
2563 return;
2564 case '(': /* set primary charset G0 */
2565 case ')': /* set secondary charset G1 */
2566 case '*': /* set tertiary charset G2 */
2567 case '+': /* set quaternary charset G3 */
2568 term.icharset = ascii - '(';
2569 term.esc |= ESC_ALTCHARSET;
2570 return;
2571 case 'D': /* IND -- Linefeed */
2572 if(term.c.y == term.bot) {
2573 tscrollup(term.top, 1);
2574 } else {
2575 tmoveto(term.c.x, term.c.y+1);
2576 }
2577 break;
2578 case 'E': /* NEL -- Next line */
2579 tnewline(1); /* always go to first col */
2580 break;
2581 case 'H': /* HTS -- Horizontal tab stop */
2582 term.tabs[term.c.x] = 1;
2583 break;
2584 case 'M': /* RI -- Reverse index */
2585 if(term.c.y == term.top) {
2586 tscrolldown(term.top, 1);
2587 } else {
2588 tmoveto(term.c.x, term.c.y-1);
2589 }
2590 break;
2591 case 'Z': /* DECID -- Identify Terminal */
2592 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2593 break;
2594 case 'c': /* RIS -- Reset to inital state */
2595 treset();
2596 xresettitle();
2597 xloadcols();
2598 break;
2599 case '=': /* DECPAM -- Application keypad */
2600 term.mode |= MODE_APPKEYPAD;
2601 break;
2602 case '>': /* DECPNM -- Normal keypad */
2603 term.mode &= ~MODE_APPKEYPAD;
2604 break;
2605 case '7': /* DECSC -- Save Cursor */
2606 tcursor(CURSOR_SAVE);
2607 break;
2608 case '8': /* DECRC -- Restore Cursor */
2609 tcursor(CURSOR_LOAD);
2610 break;
2611 case '\\': /* ST -- String Terminator */
2612 if(term.esc & ESC_STR_END)
2613 strhandle();
2614 break;
2615 default:
2616 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2617 (uchar) ascii, isprint(ascii)? ascii:'.');
2618 break;
2619 }
2620 }
2621 term.esc = 0;
2622 /*
2623 * All characters which form part of a sequence are not
2624 * printed
2625 */
2626 return;
2627 }
2628 if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
2629 selclear(NULL);
2630
2631 gp = &term.line[term.c.y][term.c.x];
2632 if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2633 gp->mode |= ATTR_WRAP;
2634 tnewline(1);
2635 }
2636
2637 if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col)
2638 memmove(gp+1, gp, (term.col - term.c.x - 1) * sizeof(Glyph));
2639
2640 if(term.c.x+width > term.col)
2641 tnewline(1);
2642
2643 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2644
2645 if(width == 2) {
2646 gp->mode |= ATTR_WIDE;
2647 if(term.c.x+1 < term.col) {
2648 gp[1].c[0] = '\0';
2649 gp[1].mode = ATTR_WDUMMY;
2650 }
2651 }
2652 if(term.c.x+width < term.col) {
2653 tmoveto(term.c.x+width, term.c.y);
2654 } else {
2655 term.c.state |= CURSOR_WRAPNEXT;
2656 }
2657 }
2658
2659 int
2660 tresize(int col, int row) {
2661 int i;
2662 int minrow = MIN(row, term.row);
2663 int mincol = MIN(col, term.col);
2664 int slide = term.c.y - row + 1;
2665 bool *bp;
2666 Line *orig;
2667 TCursor c;
2668
2669 if(col < 1 || row < 1)
2670 return 0;
2671
2672 /* free unneeded rows */
2673 i = 0;
2674 if(slide > 0) {
2675 /*
2676 * slide screen to keep cursor where we expect it -
2677 * tscrollup would work here, but we can optimize to
2678 * memmove because we're freeing the earlier lines
2679 */
2680 for(/* i = 0 */; i < slide; i++) {
2681 free(term.line[i]);
2682 free(term.alt[i]);
2683 }
2684 memmove(term.line, term.line + slide, row * sizeof(Line));
2685 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2686 }
2687 for(i += row; i < term.row; i++) {
2688 free(term.line[i]);
2689 free(term.alt[i]);
2690 }
2691
2692 /* resize to new height */
2693 term.line = xrealloc(term.line, row * sizeof(Line));
2694 term.alt = xrealloc(term.alt, row * sizeof(Line));
2695 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2696 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2697
2698 /* resize each row to new width, zero-pad if needed */
2699 for(i = 0; i < minrow; i++) {
2700 term.dirty[i] = 1;
2701 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2702 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2703 }
2704
2705 /* allocate any new rows */
2706 for(/* i == minrow */; i < row; i++) {
2707 term.dirty[i] = 1;
2708 term.line[i] = xmalloc(col * sizeof(Glyph));
2709 term.alt[i] = xmalloc(col * sizeof(Glyph));
2710 }
2711 if(col > term.col) {
2712 bp = term.tabs + term.col;
2713
2714 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2715 while(--bp > term.tabs && !*bp)
2716 /* nothing */ ;
2717 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2718 *bp = 1;
2719 }
2720 /* update terminal size */
2721 term.col = col;
2722 term.row = row;
2723 /* reset scrolling region */
2724 tsetscroll(0, row-1);
2725 /* make use of the LIMIT in tmoveto */
2726 tmoveto(term.c.x, term.c.y);
2727 /* Clearing both screens */
2728 orig = term.line;
2729 c = term.c;
2730 do {
2731 if(mincol < col && 0 < minrow) {
2732 tclearregion(mincol, 0, col - 1, minrow - 1);
2733 }
2734 if(0 < col && minrow < row) {
2735 tclearregion(0, minrow, col - 1, row - 1);
2736 }
2737 tswapscreen();
2738 tcursor(CURSOR_LOAD);
2739 } while(orig != term.line);
2740 term.c = c;
2741
2742 return (slide > 0);
2743 }
2744
2745 void
2746 xresize(int col, int row) {
2747 xw.tw = MAX(1, col * xw.cw);
2748 xw.th = MAX(1, row * xw.ch);
2749
2750 XFreePixmap(xw.dpy, xw.buf);
2751 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2752 DefaultDepth(xw.dpy, xw.scr));
2753 XftDrawChange(xw.draw, xw.buf);
2754 xclear(0, 0, xw.w, xw.h);
2755 }
2756
2757 static inline ushort
2758 sixd_to_16bit(int x) {
2759 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
2760 }
2761
2762 void
2763 xloadcols(void) {
2764 int i;
2765 XRenderColor color = { .alpha = 0xffff };
2766 static bool loaded;
2767 Color *cp;
2768
2769 if(loaded) {
2770 for (cp = dc.col; cp < dc.col + LEN(dc.col); ++cp)
2771 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
2772 }
2773
2774 /* load colors [0-15] and [256-LEN(colorname)] (config.h) */
2775 for(i = 0; i < LEN(colorname); i++) {
2776 if(!colorname[i])
2777 continue;
2778 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2779 die("Could not allocate color '%s'\n", colorname[i]);
2780 }
2781 }
2782
2783 /* load colors [16-231] ; same colors as xterm */
2784 for(i = 16; i < 6*6*6+16; i++) {
2785 color.red = sixd_to_16bit( ((i-16)/36)%6 );
2786 color.green = sixd_to_16bit( ((i-16)/6) %6 );
2787 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
2788 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i]))
2789 die("Could not allocate color %d\n", i);
2790 }
2791
2792 /* load colors [232-255] ; grayscale */
2793 for(; i < 256; i++) {
2794 color.red = color.green = color.blue = 0x0808 + 0x0a0a * (i-(6*6*6+16));
2795 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i]))
2796 die("Could not allocate color %d\n", i);
2797 }
2798 loaded = true;
2799 }
2800
2801 int
2802 xsetcolorname(int x, const char *name) {
2803 XRenderColor color = { .alpha = 0xffff };
2804 Color ncolor;
2805
2806 if(!BETWEEN(x, 0, LEN(colorname)))
2807 return 1;
2808
2809 if(!name) {
2810 if(BETWEEN(x, 16, 16 + 215)) { /* 256 color */
2811 color.red = sixd_to_16bit( ((x-16)/36)%6 );
2812 color.green = sixd_to_16bit( ((x-16)/6) %6 );
2813 color.blue = sixd_to_16bit( ((x-16)/1) %6 );
2814 if(!XftColorAllocValue(xw.dpy, xw.vis,
2815 xw.cmap, &color, &ncolor)) {
2816 return 1;
2817 }
2818
2819 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
2820 dc.col[x] = ncolor;
2821 return 0;
2822 } else if(BETWEEN(x, 16 + 216, 255)) { /* greyscale */
2823 color.red = color.green = color.blue = \
2824 0x0808 + 0x0a0a * (x - (16 + 216));
2825 if(!XftColorAllocValue(xw.dpy, xw.vis,
2826 xw.cmap, &color, &ncolor)) {
2827 return 1;
2828 }
2829
2830 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
2831 dc.col[x] = ncolor;
2832 return 0;
2833 } else { /* system colors */
2834 name = colorname[x];
2835 }
2836 }
2837 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &ncolor))
2838 return 1;
2839
2840 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
2841 dc.col[x] = ncolor;
2842 return 0;
2843 }
2844
2845 void
2846 xtermclear(int col1, int row1, int col2, int row2) {
2847 XftDrawRect(xw.draw,
2848 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2849 borderpx + col1 * xw.cw,
2850 borderpx + row1 * xw.ch,
2851 (col2-col1+1) * xw.cw,
2852 (row2-row1+1) * xw.ch);
2853 }
2854
2855 /*
2856 * Absolute coordinates.
2857 */
2858 void
2859 xclear(int x1, int y1, int x2, int y2) {
2860 XftDrawRect(xw.draw,
2861 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2862 x1, y1, x2-x1, y2-y1);
2863 }
2864
2865 void
2866 xhints(void) {
2867 XClassHint class = {opt_class ? opt_class : termname, termname};
2868 XWMHints wm = {.flags = InputHint, .input = 1};
2869 XSizeHints *sizeh = NULL;
2870
2871 sizeh = XAllocSizeHints();
2872
2873 sizeh->flags = PSize | PResizeInc | PBaseSize;
2874 sizeh->height = xw.h;
2875 sizeh->width = xw.w;
2876 sizeh->height_inc = xw.ch;
2877 sizeh->width_inc = xw.cw;
2878 sizeh->base_height = 2 * borderpx;
2879 sizeh->base_width = 2 * borderpx;
2880 if(xw.isfixed == True) {
2881 sizeh->flags |= PMaxSize | PMinSize;
2882 sizeh->min_width = sizeh->max_width = xw.w;
2883 sizeh->min_height = sizeh->max_height = xw.h;
2884 }
2885 if(xw.gm & (XValue|YValue)) {
2886 sizeh->flags |= USPosition | PWinGravity;
2887 sizeh->x = xw.l;
2888 sizeh->y = xw.t;
2889 sizeh->win_gravity = xgeommasktogravity(xw.gm);
2890 }
2891
2892 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
2893 &class);
2894 XFree(sizeh);
2895 }
2896
2897 int
2898 xgeommasktogravity(int mask) {
2899 switch(mask & (XNegative|YNegative)) {
2900 case 0:
2901 return NorthWestGravity;
2902 case XNegative:
2903 return NorthEastGravity;
2904 case YNegative:
2905 return SouthWestGravity;
2906 }
2907 return SouthEastGravity;
2908 }
2909
2910 int
2911 xloadfont(Font *f, FcPattern *pattern) {
2912 FcPattern *match;
2913 FcResult result;
2914
2915 match = FcFontMatch(NULL, pattern, &result);
2916 if(!match)
2917 return 1;
2918
2919 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
2920 FcPatternDestroy(match);
2921 return 1;
2922 }
2923
2924 f->set = NULL;
2925 f->pattern = FcPatternDuplicate(pattern);
2926
2927 f->ascent = f->match->ascent;
2928 f->descent = f->match->descent;
2929 f->lbearing = 0;
2930 f->rbearing = f->match->max_advance_width;
2931
2932 f->height = f->ascent + f->descent;
2933 f->width = f->lbearing + f->rbearing;
2934
2935 return 0;
2936 }
2937
2938 void
2939 xloadfonts(char *fontstr, double fontsize) {
2940 FcPattern *pattern;
2941 FcResult r_sz, r_psz;
2942 double fontval;
2943 float ceilf(float);
2944
2945 if(fontstr[0] == '-') {
2946 pattern = XftXlfdParse(fontstr, False, False);
2947 } else {
2948 pattern = FcNameParse((FcChar8 *)fontstr);
2949 }
2950
2951 if(!pattern)
2952 die("st: can't open font %s\n", fontstr);
2953
2954 if(fontsize > 0) {
2955 FcPatternDel(pattern, FC_PIXEL_SIZE);
2956 FcPatternDel(pattern, FC_SIZE);
2957 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2958 usedfontsize = fontsize;
2959 } else {
2960 r_psz = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2961 r_sz = FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval);
2962 if(r_psz == FcResultMatch) {
2963 usedfontsize = fontval;
2964 } else if(r_sz == FcResultMatch) {
2965 usedfontsize = -1;
2966 } else {
2967 /*
2968 * Default font size is 12, if none given. This is to
2969 * have a known usedfontsize value.
2970 */
2971 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2972 usedfontsize = 12;
2973 }
2974 }
2975
2976 FcConfigSubstitute(0, pattern, FcMatchPattern);
2977 FcDefaultSubstitute(pattern);
2978
2979 if(xloadfont(&dc.font, pattern))
2980 die("st: can't open font %s\n", fontstr);
2981
2982 if(usedfontsize < 0) {
2983 FcPatternGetDouble(dc.font.match->pattern,
2984 FC_PIXEL_SIZE, 0, &fontval);
2985 usedfontsize = fontval;
2986 }
2987
2988 /* Setting character width and height. */
2989 xw.cw = ceilf(dc.font.width * cwscale);
2990 xw.ch = ceilf(dc.font.height * chscale);
2991
2992 FcPatternDel(pattern, FC_SLANT);
2993 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2994 if(xloadfont(&dc.ifont, pattern))
2995 die("st: can't open font %s\n", fontstr);
2996
2997 FcPatternDel(pattern, FC_WEIGHT);
2998 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2999 if(xloadfont(&dc.ibfont, pattern))
3000 die("st: can't open font %s\n", fontstr);
3001
3002 FcPatternDel(pattern, FC_SLANT);
3003 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3004 if(xloadfont(&dc.bfont, pattern))
3005 die("st: can't open font %s\n", fontstr);
3006
3007 FcPatternDestroy(pattern);
3008 }
3009
3010 int
3011 xloadfontset(Font *f) {
3012 FcResult result;
3013
3014 if(!(f->set = FcFontSort(0, f->pattern, FcTrue, 0, &result)))
3015 return 1;
3016 return 0;
3017 }
3018
3019 void
3020 xunloadfont(Font *f) {
3021 XftFontClose(xw.dpy, f->match);
3022 FcPatternDestroy(f->pattern);
3023 if(f->set)
3024 FcFontSetDestroy(f->set);
3025 }
3026
3027 void
3028 xunloadfonts(void) {
3029 /* Free the loaded fonts in the font cache. */
3030 while(frclen > 0)
3031 XftFontClose(xw.dpy, frc[--frclen].font);
3032
3033 xunloadfont(&dc.font);
3034 xunloadfont(&dc.bfont);
3035 xunloadfont(&dc.ifont);
3036 xunloadfont(&dc.ibfont);
3037 }
3038
3039 void
3040 xzoom(const Arg *arg) {
3041 xunloadfonts();
3042 xloadfonts(usedfont, usedfontsize + arg->i);
3043 cresize(0, 0);
3044 redraw(0);
3045 xhints();
3046 }
3047
3048 void
3049 xinit(void) {
3050 XGCValues gcvalues;
3051 Cursor cursor;
3052 Window parent;
3053 pid_t thispid = getpid();
3054
3055 if(!(xw.dpy = XOpenDisplay(NULL)))
3056 die("Can't open display\n");
3057 xw.scr = XDefaultScreen(xw.dpy);
3058 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3059
3060 /* font */
3061 if(!FcInit())
3062 die("Could not init fontconfig.\n");
3063
3064 usedfont = (opt_font == NULL)? font : opt_font;
3065 xloadfonts(usedfont, 0);
3066
3067 /* colors */
3068 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3069 xloadcols();
3070
3071 /* adjust fixed window geometry */
3072 xw.w = 2 * borderpx + term.col * xw.cw;
3073 xw.h = 2 * borderpx + term.row * xw.ch;
3074 if(xw.gm & XNegative)
3075 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3076 if(xw.gm & YNegative)
3077 xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
3078
3079 /* Events */
3080 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3081 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3082 xw.attrs.bit_gravity = NorthWestGravity;
3083 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3084 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3085 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3086 xw.attrs.colormap = xw.cmap;
3087
3088 parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
3089 XRootWindow(xw.dpy, xw.scr);
3090 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3091 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3092 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3093 | CWEventMask | CWColormap, &xw.attrs);
3094
3095 memset(&gcvalues, 0, sizeof(gcvalues));
3096 gcvalues.graphics_exposures = False;
3097 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3098 &gcvalues);
3099 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3100 DefaultDepth(xw.dpy, xw.scr));
3101 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3102 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3103
3104 /* Xft rendering context */
3105 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3106
3107 /* input methods */
3108 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3109 XSetLocaleModifiers("@im=local");
3110 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3111 XSetLocaleModifiers("@im=");
3112 if((xw.xim = XOpenIM(xw.dpy,
3113 NULL, NULL, NULL)) == NULL) {
3114 die("XOpenIM failed. Could not open input"
3115 " device.\n");
3116 }
3117 }
3118 }
3119 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3120 | XIMStatusNothing, XNClientWindow, xw.win,
3121 XNFocusWindow, xw.win, NULL);
3122 if(xw.xic == NULL)
3123 die("XCreateIC failed. Could not obtain input method.\n");
3124
3125 /* white cursor, black outline */
3126 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
3127 XDefineCursor(xw.dpy, xw.win, cursor);
3128 XRecolorCursor(xw.dpy, cursor,
3129 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
3130 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
3131
3132 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3133 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3134 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3135 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3136
3137 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3138 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3139 PropModeReplace, (uchar *)&thispid, 1);
3140
3141 xresettitle();
3142 XMapWindow(xw.dpy, xw.win);
3143 xhints();
3144 XSync(xw.dpy, False);
3145 }
3146
3147 void
3148 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
3149 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3150 width = charlen * xw.cw, xp, i;
3151 int frcflags;
3152 int u8fl, u8fblen, u8cblen, doesexist;
3153 char *u8c, *u8fs;
3154 long unicodep;
3155 Font *font = &dc.font;
3156 FcResult fcres;
3157 FcPattern *fcpattern, *fontpattern;
3158 FcFontSet *fcsets[] = { NULL };
3159 FcCharSet *fccharset;
3160 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3161 XRenderColor colfg, colbg;
3162 XRectangle r;
3163 int oneatatime;
3164
3165 frcflags = FRC_NORMAL;
3166
3167 if(base.mode & ATTR_ITALIC) {
3168 if(base.fg == defaultfg)
3169 base.fg = defaultitalic;
3170 font = &dc.ifont;
3171 frcflags = FRC_ITALIC;
3172 } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
3173 if(base.fg == defaultfg)
3174 base.fg = defaultitalic;
3175 font = &dc.ibfont;
3176 frcflags = FRC_ITALICBOLD;
3177 } else if(base.mode & ATTR_UNDERLINE) {
3178 if(base.fg == defaultfg)
3179 base.fg = defaultunderline;
3180 }
3181
3182 if(IS_TRUECOL(base.fg)) {
3183 colfg.alpha = 0xffff;
3184 colfg.red = TRUERED(base.fg);
3185 colfg.green = TRUEGREEN(base.fg);
3186 colfg.blue = TRUEBLUE(base.fg);
3187 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3188 fg = &truefg;
3189 } else {
3190 fg = &dc.col[base.fg];
3191 }
3192
3193 if(IS_TRUECOL(base.bg)) {
3194 colbg.alpha = 0xffff;
3195 colbg.green = TRUEGREEN(base.bg);
3196 colbg.red = TRUERED(base.bg);
3197 colbg.blue = TRUEBLUE(base.bg);
3198 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3199 bg = &truebg;
3200 } else {
3201 bg = &dc.col[base.bg];
3202 }
3203
3204 if(base.mode & ATTR_BOLD) {
3205 /*
3206 * change basic system colors [0-7]
3207 * to bright system colors [8-15]
3208 */
3209 if(BETWEEN(base.fg, 0, 7) && !(base.mode & ATTR_FAINT))
3210 fg = &dc.col[base.fg + 8];
3211
3212 if(base.mode & ATTR_ITALIC) {
3213 font = &dc.ibfont;
3214 frcflags = FRC_ITALICBOLD;
3215 } else {
3216 font = &dc.bfont;
3217 frcflags = FRC_BOLD;
3218 }
3219 }
3220
3221 if(IS_SET(MODE_REVERSE)) {
3222 if(fg == &dc.col[defaultfg]) {
3223 fg = &dc.col[defaultbg];
3224 } else {
3225 colfg.red = ~fg->color.red;
3226 colfg.green = ~fg->color.green;
3227 colfg.blue = ~fg->color.blue;
3228 colfg.alpha = fg->color.alpha;
3229 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3230 &revfg);
3231 fg = &revfg;
3232 }
3233
3234 if(bg == &dc.col[defaultbg]) {
3235 bg = &dc.col[defaultfg];
3236 } else {
3237 colbg.red = ~bg->color.red;
3238 colbg.green = ~bg->color.green;
3239 colbg.blue = ~bg->color.blue;
3240 colbg.alpha = bg->color.alpha;
3241 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3242 &revbg);
3243 bg = &revbg;
3244 }
3245 }
3246
3247 if(base.mode & ATTR_REVERSE) {
3248 temp = fg;
3249 fg = bg;
3250 bg = temp;
3251 }
3252
3253 if(base.mode & ATTR_FAINT && !(base.mode & ATTR_BOLD)) {
3254 colfg.red = fg->color.red / 2;
3255 colfg.green = fg->color.green / 2;
3256 colfg.blue = fg->color.blue / 2;
3257 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3258 fg = &revfg;
3259 }
3260
3261 if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3262 fg = bg;
3263
3264 if(base.mode & ATTR_INVISIBLE)
3265 fg = bg;
3266
3267 /* Intelligent cleaning up of the borders. */
3268 if(x == 0) {
3269 xclear(0, (y == 0)? 0 : winy, borderpx,
3270 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3271 }
3272 if(x + charlen >= term.col) {
3273 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3274 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3275 }
3276 if(y == 0)
3277 xclear(winx, 0, winx + width, borderpx);
3278 if(y == term.row-1)
3279 xclear(winx, winy + xw.ch, winx + width, xw.h);
3280
3281 /* Clean up the region we want to draw to. */
3282 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3283
3284 /* Set the clip region because Xft is sometimes dirty. */
3285 r.x = 0;
3286 r.y = 0;
3287 r.height = xw.ch;
3288 r.width = width;
3289 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3290
3291 for(xp = winx; bytelen > 0;) {
3292 /*
3293 * Search for the range in the to be printed string of glyphs
3294 * that are in the main font. Then print that range. If
3295 * some glyph is found that is not in the font, do the
3296 * fallback dance.
3297 */
3298 u8fs = s;
3299 u8fblen = 0;
3300 u8fl = 0;
3301 oneatatime = font->width != xw.cw;
3302 for(;;) {
3303 u8c = s;
3304 u8cblen = utf8decode(s, &unicodep, UTF_SIZ);
3305 s += u8cblen;
3306 bytelen -= u8cblen;
3307
3308 doesexist = XftCharExists(xw.dpy, font->match, unicodep);
3309 if(doesexist) {
3310 u8fl++;
3311 u8fblen += u8cblen;
3312 if(!oneatatime && bytelen > 0)
3313 continue;
3314 }
3315
3316 if(u8fl > 0) {
3317 XftDrawStringUtf8(xw.draw, fg,
3318 font->match, xp,
3319 winy + font->ascent,
3320 (FcChar8 *)u8fs,
3321 u8fblen);
3322 xp += xw.cw * u8fl;
3323 }
3324 break;
3325 }
3326 if(doesexist) {
3327 if(oneatatime)
3328 continue;
3329 break;
3330 }
3331
3332 /* Search the font cache. */
3333 for(i = 0; i < frclen; i++) {
3334 if(XftCharExists(xw.dpy, frc[i].font, unicodep)
3335 && frc[i].flags == frcflags) {
3336 break;
3337 }
3338 }
3339
3340 /* Nothing was found. */
3341 if(i >= frclen) {
3342 if(!font->set)
3343 xloadfontset(font);
3344 fcsets[0] = font->set;
3345
3346 /*
3347 * Nothing was found in the cache. Now use
3348 * some dozen of Fontconfig calls to get the
3349 * font for one single character.
3350 *
3351 * Xft and fontconfig are design failures.
3352 */
3353 fcpattern = FcPatternDuplicate(font->pattern);
3354 fccharset = FcCharSetCreate();
3355
3356 FcCharSetAddChar(fccharset, unicodep);
3357 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3358 fccharset);
3359 FcPatternAddBool(fcpattern, FC_SCALABLE,
3360 FcTrue);
3361
3362 FcConfigSubstitute(0, fcpattern,
3363 FcMatchPattern);
3364 FcDefaultSubstitute(fcpattern);
3365
3366 fontpattern = FcFontSetMatch(0, fcsets,
3367 FcTrue, fcpattern, &fcres);
3368
3369 /*
3370 * Overwrite or create the new cache entry.
3371 */
3372 if(frclen >= LEN(frc)) {
3373 frclen = LEN(frc) - 1;
3374 XftFontClose(xw.dpy, frc[frclen].font);
3375 }
3376
3377 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3378 fontpattern);
3379 frc[frclen].flags = frcflags;
3380
3381 i = frclen;
3382 frclen++;
3383
3384 FcPatternDestroy(fcpattern);
3385 FcCharSetDestroy(fccharset);
3386 }
3387
3388 XftDrawStringUtf8(xw.draw, fg, frc[i].font,
3389 xp, winy + frc[i].font->ascent,
3390 (FcChar8 *)u8c, u8cblen);
3391
3392 xp += xw.cw * wcwidth(unicodep);
3393 }
3394
3395 /*
3396 * This is how the loop above actually should be. Why does the
3397 * application have to care about font details?
3398 *
3399 * I have to repeat: Xft and Fontconfig are design failures.
3400 */
3401 /*
3402 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
3403 winy + font->ascent, (FcChar8 *)s, bytelen);
3404 */
3405
3406 if(base.mode & ATTR_UNDERLINE) {
3407 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
3408 width, 1);
3409 }
3410
3411 if(base.mode & ATTR_STRUCK) {
3412 XftDrawRect(xw.draw, fg, winx, winy + 2 * font->ascent / 3,
3413 width, 1);
3414 }
3415
3416 /* Reset clip to none. */
3417 XftDrawSetClip(xw.draw, 0);
3418 }
3419
3420 void
3421 xdrawcursor(void) {
3422 static int oldx = 0, oldy = 0;
3423 int sl, width, curx;
3424 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
3425
3426 LIMIT(oldx, 0, term.col-1);
3427 LIMIT(oldy, 0, term.row-1);
3428
3429 curx = term.c.x;
3430
3431 /* adjust position if in dummy */
3432 if(term.line[oldy][oldx].mode & ATTR_WDUMMY)
3433 oldx--;
3434 if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3435 curx--;
3436
3437 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
3438
3439 /* remove the old cursor */
3440 sl = utf8len(term.line[oldy][oldx].c);
3441 width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1;
3442 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
3443 oldy, width, sl);
3444
3445 /* draw the new one */
3446 if(!(IS_SET(MODE_HIDE))) {
3447 if(xw.state & WIN_FOCUSED) {
3448 if(IS_SET(MODE_REVERSE)) {
3449 g.mode |= ATTR_REVERSE;
3450 g.fg = defaultcs;
3451 g.bg = defaultfg;
3452 }
3453
3454 sl = utf8len(g.c);
3455 width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
3456 ? 2 : 1;
3457 xdraws(g.c, g, term.c.x, term.c.y, width, sl);
3458 } else {
3459 XftDrawRect(xw.draw, &dc.col[defaultcs],
3460 borderpx + curx * xw.cw,
3461 borderpx + term.c.y * xw.ch,
3462 xw.cw - 1, 1);
3463 XftDrawRect(xw.draw, &dc.col[defaultcs],
3464 borderpx + curx * xw.cw,
3465 borderpx + term.c.y * xw.ch,
3466 1, xw.ch - 1);
3467 XftDrawRect(xw.draw, &dc.col[defaultcs],
3468 borderpx + (curx + 1) * xw.cw - 1,
3469 borderpx + term.c.y * xw.ch,
3470 1, xw.ch - 1);
3471 XftDrawRect(xw.draw, &dc.col[defaultcs],
3472 borderpx + curx * xw.cw,
3473 borderpx + (term.c.y + 1) * xw.ch - 1,
3474 xw.cw, 1);
3475 }
3476 oldx = curx, oldy = term.c.y;
3477 }
3478 }
3479
3480
3481 void
3482 xsettitle(char *p) {
3483 XTextProperty prop;
3484
3485 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3486 &prop);
3487 XSetWMName(xw.dpy, xw.win, &prop);
3488 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3489 XFree(prop.value);
3490 }
3491
3492 void
3493 xresettitle(void) {
3494 xsettitle(opt_title ? opt_title : "st");
3495 }
3496
3497 void
3498 redraw(int timeout) {
3499 struct timespec tv = {0, timeout * 1000};
3500
3501 tfulldirt();
3502 draw();
3503
3504 if(timeout > 0) {
3505 nanosleep(&tv, NULL);
3506 XSync(xw.dpy, False); /* necessary for a good tput flash */
3507 }
3508 }
3509
3510 void
3511 draw(void) {
3512 drawregion(0, 0, term.col, term.row);
3513 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3514 xw.h, 0, 0);
3515 XSetForeground(xw.dpy, dc.gc,
3516 dc.col[IS_SET(MODE_REVERSE)?
3517 defaultfg : defaultbg].pixel);
3518 }
3519
3520 void
3521 drawregion(int x1, int y1, int x2, int y2) {
3522 int ic, ib, x, y, ox, sl;
3523 Glyph base, new;
3524 char buf[DRAW_BUF_SIZ];
3525 bool ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3526 long unicodep;
3527
3528 if(!(xw.state & WIN_VISIBLE))
3529 return;
3530
3531 for(y = y1; y < y2; y++) {
3532 if(!term.dirty[y])
3533 continue;
3534
3535 xtermclear(0, y, term.col, y);
3536 term.dirty[y] = 0;
3537 base = term.line[y][0];
3538 ic = ib = ox = 0;
3539 for(x = x1; x < x2; x++) {
3540 new = term.line[y][x];
3541 if(new.mode == ATTR_WDUMMY)
3542 continue;
3543 if(ena_sel && selected(x, y))
3544 new.mode ^= ATTR_REVERSE;
3545 if(ib > 0 && (ATTRCMP(base, new)
3546 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
3547 xdraws(buf, base, ox, y, ic, ib);
3548 ic = ib = 0;
3549 }
3550 if(ib == 0) {
3551 ox = x;
3552 base = new;
3553 }
3554
3555 sl = utf8decode(new.c, &unicodep, UTF_SIZ);
3556 memcpy(buf+ib, new.c, sl);
3557 ib += sl;
3558 ic += (new.mode & ATTR_WIDE)? 2 : 1;
3559 }
3560 if(ib > 0)
3561 xdraws(buf, base, ox, y, ic, ib);
3562 }
3563 xdrawcursor();
3564 }
3565
3566 void
3567 expose(XEvent *ev) {
3568 XExposeEvent *e = &ev->xexpose;
3569
3570 if(xw.state & WIN_REDRAW) {
3571 if(!e->count)
3572 xw.state &= ~WIN_REDRAW;
3573 }
3574 redraw(0);
3575 }
3576
3577 void
3578 visibility(XEvent *ev) {
3579 XVisibilityEvent *e = &ev->xvisibility;
3580
3581 if(e->state == VisibilityFullyObscured) {
3582 xw.state &= ~WIN_VISIBLE;
3583 } else if(!(xw.state & WIN_VISIBLE)) {
3584 /* need a full redraw for next Expose, not just a buf copy */
3585 xw.state |= WIN_VISIBLE | WIN_REDRAW;
3586 }
3587 }
3588
3589 void
3590 unmap(XEvent *ev) {
3591 xw.state &= ~WIN_VISIBLE;
3592 }
3593
3594 void
3595 xsetpointermotion(int set) {
3596 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
3597 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
3598 }
3599
3600 void
3601 xseturgency(int add) {
3602 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3603
3604 MODBIT(h->flags, add, XUrgencyHint);
3605 XSetWMHints(xw.dpy, xw.win, h);
3606 XFree(h);
3607 }
3608
3609 void
3610 focus(XEvent *ev) {
3611 XFocusChangeEvent *e = &ev->xfocus;
3612
3613 if(e->mode == NotifyGrab)
3614 return;
3615
3616 if(ev->type == FocusIn) {
3617 XSetICFocus(xw.xic);
3618 xw.state |= WIN_FOCUSED;
3619 xseturgency(0);
3620 if(IS_SET(MODE_FOCUS))
3621 ttywrite("\033[I", 3);
3622 } else {
3623 XUnsetICFocus(xw.xic);
3624 xw.state &= ~WIN_FOCUSED;
3625 if(IS_SET(MODE_FOCUS))
3626 ttywrite("\033[O", 3);
3627 }
3628 }
3629
3630 static inline bool
3631 match(uint mask, uint state) {
3632 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
3633 }
3634
3635 void
3636 numlock(const Arg *dummy) {
3637 term.numlock ^= 1;
3638 }
3639
3640 char*
3641 kmap(KeySym k, uint state) {
3642 Key *kp;
3643 int i;
3644
3645 /* Check for mapped keys out of X11 function keys. */
3646 for(i = 0; i < LEN(mappedkeys); i++) {
3647 if(mappedkeys[i] == k)
3648 break;
3649 }
3650 if(i == LEN(mappedkeys)) {
3651 if((k & 0xFFFF) < 0xFD00)
3652 return NULL;
3653 }
3654
3655 for(kp = key; kp < key + LEN(key); kp++) {
3656 if(kp->k != k)
3657 continue;
3658
3659 if(!match(kp->mask, state))
3660 continue;
3661
3662 if(IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
3663 continue;
3664 if(term.numlock && kp->appkey == 2)
3665 continue;
3666
3667 if(IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
3668 continue;
3669
3670 if(IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
3671 continue;
3672
3673 return kp->s;
3674 }
3675
3676 return NULL;
3677 }
3678
3679 void
3680 kpress(XEvent *ev) {
3681 XKeyEvent *e = &ev->xkey;
3682 KeySym ksym;
3683 char buf[32], *customkey;
3684 int len;
3685 long c;
3686 Status status;
3687 Shortcut *bp;
3688
3689 if(IS_SET(MODE_KBDLOCK))
3690 return;
3691
3692 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
3693 /* 1. shortcuts */
3694 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3695 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3696 bp->func(&(bp->arg));
3697 return;
3698 }
3699 }
3700
3701 /* 2. custom keys from config.h */
3702 if((customkey = kmap(ksym, e->state))) {
3703 ttysend(customkey, strlen(customkey));
3704 return;
3705 }
3706
3707 /* 3. composed string from input method */
3708 if(len == 0)
3709 return;
3710 if(len == 1 && e->state & Mod1Mask) {
3711 if(IS_SET(MODE_8BIT)) {
3712 if(*buf < 0177) {
3713 c = *buf | 0x80;
3714 len = utf8encode(c, buf, UTF_SIZ);
3715 }
3716 } else {
3717 buf[1] = buf[0];
3718 buf[0] = '\033';
3719 len = 2;
3720 }
3721 }
3722 ttysend(buf, len);
3723 }
3724
3725
3726 void
3727 cmessage(XEvent *e) {
3728 /*
3729 * See xembed specs
3730 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3731 */
3732 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3733 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3734 xw.state |= WIN_FOCUSED;
3735 xseturgency(0);
3736 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3737 xw.state &= ~WIN_FOCUSED;
3738 }
3739 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3740 /* Send SIGHUP to shell */
3741 kill(pid, SIGHUP);
3742 exit(EXIT_SUCCESS);
3743 }
3744 }
3745
3746 void
3747 cresize(int width, int height) {
3748 int col, row;
3749
3750 if(width != 0)
3751 xw.w = width;
3752 if(height != 0)
3753 xw.h = height;
3754
3755 col = (xw.w - 2 * borderpx) / xw.cw;
3756 row = (xw.h - 2 * borderpx) / xw.ch;
3757
3758 tresize(col, row);
3759 xresize(col, row);
3760 ttyresize();
3761 }
3762
3763 void
3764 resize(XEvent *e) {
3765 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3766 return;
3767
3768 cresize(e->xconfigure.width, e->xconfigure.height);
3769 }
3770
3771 void
3772 run(void) {
3773 XEvent ev;
3774 int w = xw.w, h = xw.h;
3775 fd_set rfd;
3776 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
3777 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
3778 long deltatime;
3779
3780 /* Waiting for window mapping */
3781 while(1) {
3782 XNextEvent(xw.dpy, &ev);
3783 if(XFilterEvent(&ev, None))
3784 continue;
3785 if(ev.type == ConfigureNotify) {
3786 w = ev.xconfigure.width;
3787 h = ev.xconfigure.height;
3788 } else if(ev.type == MapNotify) {
3789 break;
3790 }
3791 }
3792
3793 ttynew();
3794 cresize(w, h);
3795
3796 clock_gettime(CLOCK_MONOTONIC, &last);
3797 lastblink = last;
3798
3799 for(xev = actionfps;;) {
3800 FD_ZERO(&rfd);
3801 FD_SET(cmdfd, &rfd);
3802 FD_SET(xfd, &rfd);
3803
3804 if(pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
3805 if(errno == EINTR)
3806 continue;
3807 die("select failed: %s\n", strerror(errno));
3808 }
3809 if(FD_ISSET(cmdfd, &rfd)) {
3810 ttyread();
3811 if(blinktimeout) {
3812 blinkset = tattrset(ATTR_BLINK);
3813 if(!blinkset)
3814 MODBIT(term.mode, 0, MODE_BLINK);
3815 }
3816 }
3817
3818 if(FD_ISSET(xfd, &rfd))
3819 xev = actionfps;
3820
3821 clock_gettime(CLOCK_MONOTONIC, &now);
3822 drawtimeout.tv_sec = 0;
3823 drawtimeout.tv_nsec = (1000/xfps) * 1E6;
3824 tv = &drawtimeout;
3825
3826 dodraw = 0;
3827 if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
3828 tsetdirtattr(ATTR_BLINK);
3829 term.mode ^= MODE_BLINK;
3830 lastblink = now;
3831 dodraw = 1;
3832 }
3833 deltatime = TIMEDIFF(now, last);
3834 if(deltatime > (xev? (1000/xfps) : (1000/actionfps))
3835 || deltatime < 0) {
3836 dodraw = 1;
3837 last = now;
3838 }
3839
3840 if(dodraw) {
3841 while(XPending(xw.dpy)) {
3842 XNextEvent(xw.dpy, &ev);
3843 if(XFilterEvent(&ev, None))
3844 continue;
3845 if(handler[ev.type])
3846 (handler[ev.type])(&ev);
3847 }
3848
3849 draw();
3850 XFlush(xw.dpy);
3851
3852 if(xev && !FD_ISSET(xfd, &rfd))
3853 xev--;
3854 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
3855 if(blinkset) {
3856 if(TIMEDIFF(now, lastblink) \
3857 > blinktimeout) {
3858 drawtimeout.tv_nsec = 1000;
3859 } else {
3860 drawtimeout.tv_nsec = (1E6 * \
3861 (blinktimeout - \
3862 TIMEDIFF(now,
3863 lastblink)));
3864 }
3865 } else {
3866 tv = NULL;
3867 }
3868 }
3869 }
3870 }
3871 }
3872
3873 void
3874 usage(void) {
3875 die("%s " VERSION " (c) 2010-2014 st engineers\n" \
3876 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
3877 " [-t title] [-w windowid] [-e command ...]\n", argv0);
3878 }
3879
3880 int
3881 main(int argc, char *argv[]) {
3882 char *titles;
3883 uint cols = 80, rows = 24;
3884
3885 xw.l = xw.t = 0;
3886 xw.isfixed = False;
3887
3888 ARGBEGIN {
3889 case 'a':
3890 allowaltscreen = false;
3891 break;
3892 case 'c':
3893 opt_class = EARGF(usage());
3894 break;
3895 case 'e':
3896 /* eat all remaining arguments */
3897 if(argc > 1) {
3898 opt_cmd = &argv[1];
3899 if(argv[1] != NULL && opt_title == NULL) {
3900 titles = xstrdup(argv[1]);
3901 opt_title = basename(titles);
3902 }
3903 }
3904 goto run;
3905 case 'f':
3906 opt_font = EARGF(usage());
3907 break;
3908 case 'g':
3909 xw.gm = XParseGeometry(EARGF(usage()),
3910 &xw.l, &xw.t, &cols, &rows);
3911 break;
3912 case 'i':
3913 xw.isfixed = True;
3914 break;
3915 case 'o':
3916 opt_io = EARGF(usage());
3917 break;
3918 case 't':
3919 opt_title = EARGF(usage());
3920 break;
3921 case 'w':
3922 opt_embed = EARGF(usage());
3923 break;
3924 case 'v':
3925 default:
3926 usage();
3927 } ARGEND;
3928
3929 run:
3930 setlocale(LC_CTYPE, "");
3931 XSetLocaleModifiers("");
3932 tnew(cols? cols : 1, rows? rows : 1);
3933 xinit();
3934 selinit();
3935 run();
3936
3937 return 0;
3938 }
3939