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