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Add missed names of charset sequences
[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) || (c) == '\177')
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 << 0,
92 ATTR_FAINT = 1 << 1,
93 ATTR_ITALIC = 1 << 2,
94 ATTR_UNDERLINE = 1 << 3,
95 ATTR_BLINK = 1 << 4,
96 ATTR_REVERSE = 1 << 5,
97 ATTR_INVISIBLE = 1 << 6,
98 ATTR_STRUCK = 1 << 7,
99 ATTR_WRAP = 1 << 8,
100 ATTR_WIDE = 1 << 9,
101 ATTR_WDUMMY = 1 << 10,
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 << 0,
117 MODE_INSERT = 1 << 1,
118 MODE_APPKEYPAD = 1 << 2,
119 MODE_ALTSCREEN = 1 << 3,
120 MODE_CRLF = 1 << 4,
121 MODE_MOUSEBTN = 1 << 5,
122 MODE_MOUSEMOTION = 1 << 6,
123 MODE_REVERSE = 1 << 7,
124 MODE_KBDLOCK = 1 << 8,
125 MODE_HIDE = 1 << 9,
126 MODE_ECHO = 1 << 10,
127 MODE_APPCURSOR = 1 << 11,
128 MODE_MOUSESGR = 1 << 12,
129 MODE_8BIT = 1 << 13,
130 MODE_BLINK = 1 << 14,
131 MODE_FBLINK = 1 << 15,
132 MODE_FOCUS = 1 << 16,
133 MODE_MOUSEX10 = 1 << 17,
134 MODE_MOUSEMANY = 1 << 18,
135 MODE_BRCKTPASTE = 1 << 19,
136 MODE_PRINT = 1 << 20,
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 int eschandle(uchar ascii);
360 static void strdump(void);
361 static void strhandle(void);
362 static void strparse(void);
363 static void strreset(void);
364
365 static int tattrset(int);
366 static void tprinter(char *, size_t);
367 static void tdumpsel(void);
368 static void tdumpline(int);
369 static void tdump(void);
370 static void tclearregion(int, int, int, int);
371 static void tcursor(int);
372 static void tdeletechar(int);
373 static void tdeleteline(int);
374 static void tinsertblank(int);
375 static void tinsertblankline(int);
376 static int tlinelen(int);
377 static void tmoveto(int, int);
378 static void tmoveato(int, int);
379 static void tnew(int, int);
380 static void tnewline(int);
381 static void tputtab(int);
382 static void tputc(char *, int);
383 static void treset(void);
384 static void tresize(int, int);
385 static void tscrollup(int, int);
386 static void tscrolldown(int, int);
387 static void tsetattr(int *, int);
388 static void tsetchar(char *, Glyph *, int, int);
389 static void tsetscroll(int, int);
390 static void tswapscreen(void);
391 static void tsetdirt(int, int);
392 static void tsetdirtattr(int);
393 static void tsetmode(bool, bool, int *, int);
394 static void tfulldirt(void);
395 static void techo(char *, int);
396 static void tcontrolcode(uchar );
397 static void tdectest(char );
398 static int32_t tdefcolor(int *, int *, int);
399 static void tdeftran(char);
400 static inline bool match(uint, uint);
401 static void ttynew(void);
402 static void ttyread(void);
403 static void ttyresize(void);
404 static void ttysend(char *, size_t);
405 static void ttywrite(const char *, size_t);
406 static void tstrsequence(uchar c);
407
408 static void xdraws(char *, Glyph, int, int, int, int);
409 static void xhints(void);
410 static void xclear(int, int, int, int);
411 static void xdrawcursor(void);
412 static void xinit(void);
413 static void xloadcols(void);
414 static int xsetcolorname(int, const char *);
415 static int xgeommasktogravity(int);
416 static int xloadfont(Font *, FcPattern *);
417 static void xloadfonts(char *, double);
418 static int xloadfontset(Font *);
419 static void xsettitle(char *);
420 static void xresettitle(void);
421 static void xsetpointermotion(int);
422 static void xseturgency(int);
423 static void xsetsel(char *);
424 static void xtermclear(int, int, int, int);
425 static void xunloadfont(Font *);
426 static void xunloadfonts(void);
427 static void xresize(int, int);
428
429 static void expose(XEvent *);
430 static void visibility(XEvent *);
431 static void unmap(XEvent *);
432 static char *kmap(KeySym, uint);
433 static void kpress(XEvent *);
434 static void cmessage(XEvent *);
435 static void cresize(int, int);
436 static void resize(XEvent *);
437 static void focus(XEvent *);
438 static void brelease(XEvent *);
439 static void bpress(XEvent *);
440 static void bmotion(XEvent *);
441 static void selnotify(XEvent *);
442 static void selclear(XEvent *);
443 static void selrequest(XEvent *);
444
445 static void selinit(void);
446 static void selnormalize(void);
447 static inline bool selected(int, int);
448 static char *getsel(void);
449 static void selcopy(void);
450 static void selscroll(int, int);
451 static void selsnap(int, int *, int *, int);
452 static void getbuttoninfo(XEvent *);
453 static void mousereport(XEvent *);
454
455 static size_t utf8decode(char *, long *, size_t);
456 static long utf8decodebyte(char, size_t *);
457 static size_t utf8encode(long, char *, size_t);
458 static char utf8encodebyte(long, size_t);
459 static size_t utf8len(char *);
460 static size_t utf8validate(long *, size_t);
461
462 static ssize_t xwrite(int, const char *, size_t);
463 static void *xmalloc(size_t);
464 static void *xrealloc(void *, size_t);
465 static char *xstrdup(char *);
466
467 static void usage(void);
468
469 static void (*handler[LASTEvent])(XEvent *) = {
470 [KeyPress] = kpress,
471 [ClientMessage] = cmessage,
472 [ConfigureNotify] = resize,
473 [VisibilityNotify] = visibility,
474 [UnmapNotify] = unmap,
475 [Expose] = expose,
476 [FocusIn] = focus,
477 [FocusOut] = focus,
478 [MotionNotify] = bmotion,
479 [ButtonPress] = bpress,
480 [ButtonRelease] = brelease,
481 [SelectionClear] = selclear,
482 [SelectionNotify] = selnotify,
483 [SelectionRequest] = selrequest,
484 };
485
486 /* Globals */
487 static DC dc;
488 static XWindow xw;
489 static Term term;
490 static CSIEscape csiescseq;
491 static STREscape strescseq;
492 static int cmdfd;
493 static pid_t pid;
494 static Selection sel;
495 static int iofd = STDOUT_FILENO;
496 static char **opt_cmd = NULL;
497 static char *opt_io = NULL;
498 static char *opt_title = NULL;
499 static char *opt_embed = NULL;
500 static char *opt_class = NULL;
501 static char *opt_font = NULL;
502 static int oldbutton = 3; /* button event on startup: 3 = release */
503
504 static char *usedfont = NULL;
505 static double usedfontsize = 0;
506
507 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
508 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
509 static long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
510 static long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
511
512 /* Font Ring Cache */
513 enum {
514 FRC_NORMAL,
515 FRC_ITALIC,
516 FRC_BOLD,
517 FRC_ITALICBOLD
518 };
519
520 typedef struct {
521 XftFont *font;
522 int flags;
523 } Fontcache;
524
525 /* Fontcache is an array now. A new font will be appended to the array. */
526 static Fontcache frc[16];
527 static int frclen = 0;
528
529 ssize_t
530 xwrite(int fd, const char *s, size_t len) {
531 size_t aux = len;
532
533 while(len > 0) {
534 ssize_t r = write(fd, s, len);
535 if(r < 0)
536 return r;
537 len -= r;
538 s += r;
539 }
540 return aux;
541 }
542
543 void *
544 xmalloc(size_t len) {
545 void *p = malloc(len);
546
547 if(!p)
548 die("Out of memory\n");
549
550 return p;
551 }
552
553 void *
554 xrealloc(void *p, size_t len) {
555 if((p = realloc(p, len)) == NULL)
556 die("Out of memory\n");
557
558 return p;
559 }
560
561 char *
562 xstrdup(char *s) {
563 if((s = strdup(s)) == NULL)
564 die("Out of memory\n");
565
566 return s;
567 }
568
569 size_t
570 utf8decode(char *c, long *u, size_t clen) {
571 size_t i, j, len, type;
572 long udecoded;
573
574 *u = UTF_INVALID;
575 if(!clen)
576 return 0;
577 udecoded = utf8decodebyte(c[0], &len);
578 if(!BETWEEN(len, 1, UTF_SIZ))
579 return 1;
580 for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
581 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
582 if(type != 0)
583 return j;
584 }
585 if(j < len)
586 return 0;
587 *u = udecoded;
588 utf8validate(u, len);
589 return len;
590 }
591
592 long
593 utf8decodebyte(char c, size_t *i) {
594 for(*i = 0; *i < LEN(utfmask); ++(*i))
595 if(((uchar)c & utfmask[*i]) == utfbyte[*i])
596 return (uchar)c & ~utfmask[*i];
597 return 0;
598 }
599
600 size_t
601 utf8encode(long u, char *c, size_t clen) {
602 size_t len, i;
603
604 len = utf8validate(&u, 0);
605 if(clen < len)
606 return 0;
607 for(i = len - 1; i != 0; --i) {
608 c[i] = utf8encodebyte(u, 0);
609 u >>= 6;
610 }
611 c[0] = utf8encodebyte(u, len);
612 return len;
613 }
614
615 char
616 utf8encodebyte(long u, size_t i) {
617 return utfbyte[i] | (u & ~utfmask[i]);
618 }
619
620 size_t
621 utf8len(char *c) {
622 return utf8decode(c, &(long){0}, UTF_SIZ);
623 }
624
625 size_t
626 utf8validate(long *u, size_t i) {
627 if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
628 *u = UTF_INVALID;
629 for(i = 1; *u > utfmax[i]; ++i)
630 ;
631 return i;
632 }
633
634 static void
635 selinit(void) {
636 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
637 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
638 sel.mode = 0;
639 sel.ob.x = -1;
640 sel.clip = NULL;
641 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
642 if(sel.xtarget == None)
643 sel.xtarget = XA_STRING;
644 }
645
646 static int
647 x2col(int x) {
648 x -= borderpx;
649 x /= xw.cw;
650
651 return LIMIT(x, 0, term.col-1);
652 }
653
654 static int
655 y2row(int y) {
656 y -= borderpx;
657 y /= xw.ch;
658
659 return LIMIT(y, 0, term.row-1);
660 }
661
662 static int tlinelen(int y) {
663 int i = term.col;
664
665 if(term.line[y][i - 1].mode & ATTR_WRAP)
666 return i;
667
668 while(i > 0 && term.line[y][i - 1].c[0] == ' ')
669 --i;
670
671 return i;
672 }
673
674 static void
675 selnormalize(void) {
676 int i;
677
678 if(sel.ob.y == sel.oe.y || sel.type == SEL_RECTANGULAR) {
679 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
680 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
681 } else {
682 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
683 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
684 }
685 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
686 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
687
688 selsnap(sel.snap, &sel.nb.x, &sel.nb.y, -1);
689 selsnap(sel.snap, &sel.ne.x, &sel.ne.y, +1);
690
691 /* expand selection over line breaks */
692 if (sel.type == SEL_RECTANGULAR)
693 return;
694 i = tlinelen(sel.nb.y);
695 if (i < sel.nb.x)
696 sel.nb.x = i;
697 if (tlinelen(sel.ne.y) <= sel.ne.x)
698 sel.ne.x = term.col - 1;
699 }
700
701 static inline bool
702 selected(int x, int y) {
703 if(sel.type == SEL_RECTANGULAR)
704 return BETWEEN(y, sel.nb.y, sel.ne.y)
705 && BETWEEN(x, sel.nb.x, sel.ne.x);
706
707 return BETWEEN(y, sel.nb.y, sel.ne.y)
708 && (y != sel.nb.y || x >= sel.nb.x)
709 && (y != sel.ne.y || x <= sel.ne.x);
710 }
711
712 void
713 selsnap(int mode, int *x, int *y, int direction) {
714 int newx, newy, xt, yt;
715 bool delim, prevdelim;
716 Glyph *gp, *prevgp;
717
718 switch(mode) {
719 case SNAP_WORD:
720 /*
721 * Snap around if the word wraps around at the end or
722 * beginning of a line.
723 */
724 prevgp = &term.line[*y][*x];
725 prevdelim = strchr(worddelimiters, prevgp->c[0]) != NULL;
726 for(;;) {
727 newx = *x + direction;
728 newy = *y;
729 if(!BETWEEN(newx, 0, term.col - 1)) {
730 newy += direction;
731 newx = (newx + term.col) % term.col;
732 if (!BETWEEN(newy, 0, term.row - 1))
733 break;
734
735 if(direction > 0)
736 yt = *y, xt = *x;
737 else
738 yt = newy, xt = newx;
739 if(!(term.line[yt][xt].mode & ATTR_WRAP))
740 break;
741 }
742
743 if (newx >= tlinelen(newy))
744 break;
745
746 gp = &term.line[newy][newx];
747 delim = strchr(worddelimiters, gp->c[0]) != NULL;
748 if(!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
749 || (delim && gp->c[0] != prevgp->c[0])))
750 break;
751
752 *x = newx;
753 *y = newy;
754 prevgp = gp;
755 prevdelim = delim;
756 }
757 break;
758 case SNAP_LINE:
759 /*
760 * Snap around if the the previous line or the current one
761 * has set ATTR_WRAP at its end. Then the whole next or
762 * previous line will be selected.
763 */
764 *x = (direction < 0) ? 0 : term.col - 1;
765 if(direction < 0 && *y > 0) {
766 for(; *y > 0; *y += direction) {
767 if(!(term.line[*y-1][term.col-1].mode
768 & ATTR_WRAP)) {
769 break;
770 }
771 }
772 } else if(direction > 0 && *y < term.row-1) {
773 for(; *y < term.row; *y += direction) {
774 if(!(term.line[*y][term.col-1].mode
775 & ATTR_WRAP)) {
776 break;
777 }
778 }
779 }
780 break;
781 }
782 }
783
784 void
785 getbuttoninfo(XEvent *e) {
786 int type;
787 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
788
789 sel.alt = IS_SET(MODE_ALTSCREEN);
790
791 sel.oe.x = x2col(e->xbutton.x);
792 sel.oe.y = y2row(e->xbutton.y);
793 selnormalize();
794
795 sel.type = SEL_REGULAR;
796 for(type = 1; type < LEN(selmasks); ++type) {
797 if(match(selmasks[type], state)) {
798 sel.type = type;
799 break;
800 }
801 }
802 }
803
804 void
805 mousereport(XEvent *e) {
806 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
807 button = e->xbutton.button, state = e->xbutton.state,
808 len;
809 char buf[40];
810 static int ox, oy;
811
812 /* from urxvt */
813 if(e->xbutton.type == MotionNotify) {
814 if(x == ox && y == oy)
815 return;
816 if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
817 return;
818 /* MOUSE_MOTION: no reporting if no button is pressed */
819 if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
820 return;
821
822 button = oldbutton + 32;
823 ox = x;
824 oy = y;
825 } else {
826 if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
827 button = 3;
828 } else {
829 button -= Button1;
830 if(button >= 3)
831 button += 64 - 3;
832 }
833 if(e->xbutton.type == ButtonPress) {
834 oldbutton = button;
835 ox = x;
836 oy = y;
837 } else if(e->xbutton.type == ButtonRelease) {
838 oldbutton = 3;
839 /* MODE_MOUSEX10: no button release reporting */
840 if(IS_SET(MODE_MOUSEX10))
841 return;
842 if (button == 64 || button == 65)
843 return;
844 }
845 }
846
847 if(!IS_SET(MODE_MOUSEX10)) {
848 button += (state & ShiftMask ? 4 : 0)
849 + (state & Mod4Mask ? 8 : 0)
850 + (state & ControlMask ? 16 : 0);
851 }
852
853 len = 0;
854 if(IS_SET(MODE_MOUSESGR)) {
855 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
856 button, x+1, y+1,
857 e->xbutton.type == ButtonRelease ? 'm' : 'M');
858 } else if(x < 223 && y < 223) {
859 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
860 32+button, 32+x+1, 32+y+1);
861 } else {
862 return;
863 }
864
865 ttywrite(buf, len);
866 }
867
868 void
869 bpress(XEvent *e) {
870 struct timespec now;
871 Mousekey *mk;
872
873 if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
874 mousereport(e);
875 return;
876 }
877
878 for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
879 if(e->xbutton.button == mk->b
880 && match(mk->mask, e->xbutton.state)) {
881 ttysend(mk->s, strlen(mk->s));
882 return;
883 }
884 }
885
886 if(e->xbutton.button == Button1) {
887 clock_gettime(CLOCK_MONOTONIC, &now);
888
889 /* Clear previous selection, logically and visually. */
890 selclear(NULL);
891 sel.mode = 1;
892 sel.type = SEL_REGULAR;
893 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
894 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
895
896 /*
897 * If the user clicks below predefined timeouts specific
898 * snapping behaviour is exposed.
899 */
900 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
901 sel.snap = SNAP_LINE;
902 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
903 sel.snap = SNAP_WORD;
904 } else {
905 sel.snap = 0;
906 }
907 selnormalize();
908
909 /*
910 * Draw selection, unless it's regular and we don't want to
911 * make clicks visible
912 */
913 if(sel.snap != 0) {
914 sel.mode++;
915 tsetdirt(sel.nb.y, sel.ne.y);
916 }
917 sel.tclick2 = sel.tclick1;
918 sel.tclick1 = now;
919 }
920 }
921
922 char *
923 getsel(void) {
924 char *str, *ptr;
925 int y, bufsize, size, lastx, linelen;
926 Glyph *gp, *last;
927
928 if(sel.ob.x == -1)
929 return NULL;
930
931 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
932 ptr = str = xmalloc(bufsize);
933
934 /* append every set & selected glyph to the selection */
935 for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
936 linelen = tlinelen(y);
937
938 if(sel.type == SEL_RECTANGULAR) {
939 gp = &term.line[y][sel.nb.x];
940 lastx = sel.ne.x;
941 } else {
942 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
943 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
944 }
945 last = &term.line[y][MIN(lastx, linelen-1)];
946
947 for( ; gp <= last; ++gp) {
948 if(gp->mode & ATTR_WDUMMY)
949 continue;
950
951 size = utf8len(gp->c);
952 memcpy(ptr, gp->c, size);
953 ptr += size;
954 }
955
956 /*
957 * Copy and pasting of line endings is inconsistent
958 * in the inconsistent terminal and GUI world.
959 * The best solution seems like to produce '\n' when
960 * something is copied from st and convert '\n' to
961 * '\r', when something to be pasted is received by
962 * st.
963 * FIXME: Fix the computer world.
964 */
965 if((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
966 *ptr++ = '\n';
967 }
968 *ptr = 0;
969 return str;
970 }
971
972 void
973 selcopy(void) {
974 xsetsel(getsel());
975 }
976
977 void
978 selnotify(XEvent *e) {
979 ulong nitems, ofs, rem;
980 int format;
981 uchar *data, *last, *repl;
982 Atom type;
983
984 ofs = 0;
985 do {
986 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
987 False, AnyPropertyType, &type, &format,
988 &nitems, &rem, &data)) {
989 fprintf(stderr, "Clipboard allocation failed\n");
990 return;
991 }
992
993 /*
994 * As seen in getsel:
995 * Line endings are inconsistent in the terminal and GUI world
996 * copy and pasting. When receiving some selection data,
997 * replace all '\n' with '\r'.
998 * FIXME: Fix the computer world.
999 */
1000 repl = data;
1001 last = data + nitems * format / 8;
1002 while((repl = memchr(repl, '\n', last - repl))) {
1003 *repl++ = '\r';
1004 }
1005
1006 if(IS_SET(MODE_BRCKTPASTE))
1007 ttywrite("\033[200~", 6);
1008 ttysend((char *)data, nitems * format / 8);
1009 if(IS_SET(MODE_BRCKTPASTE))
1010 ttywrite("\033[201~", 6);
1011 XFree(data);
1012 /* number of 32-bit chunks returned */
1013 ofs += nitems * format / 32;
1014 } while(rem > 0);
1015 }
1016
1017 void
1018 selpaste(const Arg *dummy) {
1019 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1020 xw.win, CurrentTime);
1021 }
1022
1023 void
1024 clippaste(const Arg *dummy) {
1025 Atom clipboard;
1026
1027 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1028 XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
1029 xw.win, CurrentTime);
1030 }
1031
1032 void
1033 selclear(XEvent *e) {
1034 if(sel.ob.x == -1)
1035 return;
1036 sel.ob.x = -1;
1037 tsetdirt(sel.nb.y, sel.ne.y);
1038 }
1039
1040 void
1041 selrequest(XEvent *e) {
1042 XSelectionRequestEvent *xsre;
1043 XSelectionEvent xev;
1044 Atom xa_targets, string;
1045
1046 xsre = (XSelectionRequestEvent *) e;
1047 xev.type = SelectionNotify;
1048 xev.requestor = xsre->requestor;
1049 xev.selection = xsre->selection;
1050 xev.target = xsre->target;
1051 xev.time = xsre->time;
1052 /* reject */
1053 xev.property = None;
1054
1055 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1056 if(xsre->target == xa_targets) {
1057 /* respond with the supported type */
1058 string = sel.xtarget;
1059 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1060 XA_ATOM, 32, PropModeReplace,
1061 (uchar *) &string, 1);
1062 xev.property = xsre->property;
1063 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
1064 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1065 xsre->target, 8, PropModeReplace,
1066 (uchar *) sel.clip, strlen(sel.clip));
1067 xev.property = xsre->property;
1068 }
1069
1070 /* all done, send a notification to the listener */
1071 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
1072 fprintf(stderr, "Error sending SelectionNotify event\n");
1073 }
1074
1075 void
1076 xsetsel(char *str) {
1077 /* register the selection for both the clipboard and the primary */
1078 Atom clipboard;
1079
1080 free(sel.clip);
1081 sel.clip = str;
1082
1083 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
1084
1085 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1086 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1087 }
1088
1089 void
1090 brelease(XEvent *e) {
1091 if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1092 mousereport(e);
1093 return;
1094 }
1095
1096 if(e->xbutton.button == Button2) {
1097 selpaste(NULL);
1098 } else if(e->xbutton.button == Button1) {
1099 if(sel.mode < 2) {
1100 selclear(NULL);
1101 } else {
1102 getbuttoninfo(e);
1103 selcopy();
1104 }
1105 sel.mode = 0;
1106 tsetdirt(sel.nb.y, sel.ne.y);
1107 }
1108 }
1109
1110 void
1111 bmotion(XEvent *e) {
1112 int oldey, oldex, oldsby, oldsey;
1113
1114 if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1115 mousereport(e);
1116 return;
1117 }
1118
1119 if(!sel.mode)
1120 return;
1121
1122 sel.mode++;
1123 oldey = sel.oe.y;
1124 oldex = sel.oe.x;
1125 oldsby = sel.nb.y;
1126 oldsey = sel.ne.y;
1127 getbuttoninfo(e);
1128
1129 if(oldey != sel.oe.y || oldex != sel.oe.x)
1130 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1131 }
1132
1133 void
1134 die(const char *errstr, ...) {
1135 va_list ap;
1136
1137 va_start(ap, errstr);
1138 vfprintf(stderr, errstr, ap);
1139 va_end(ap);
1140 exit(EXIT_FAILURE);
1141 }
1142
1143 void
1144 execsh(void) {
1145 char **args, *sh;
1146 const struct passwd *pw;
1147 char buf[sizeof(long) * 8 + 1];
1148
1149 errno = 0;
1150 if((pw = getpwuid(getuid())) == NULL) {
1151 if(errno)
1152 die("getpwuid:%s\n", strerror(errno));
1153 else
1154 die("who are you?\n");
1155 }
1156
1157 if (utmp)
1158 sh = utmp;
1159 else if (pw->pw_shell[0])
1160 sh = pw->pw_shell;
1161 else
1162 sh = shell;
1163 args = (opt_cmd) ? opt_cmd : (char *[]){sh, NULL};
1164 snprintf(buf, sizeof(buf), "%lu", xw.win);
1165
1166 unsetenv("COLUMNS");
1167 unsetenv("LINES");
1168 unsetenv("TERMCAP");
1169 setenv("LOGNAME", pw->pw_name, 1);
1170 setenv("USER", pw->pw_name, 1);
1171 setenv("SHELL", args[0], 1);
1172 setenv("HOME", pw->pw_dir, 1);
1173 setenv("TERM", termname, 1);
1174 setenv("WINDOWID", buf, 1);
1175
1176 signal(SIGCHLD, SIG_DFL);
1177 signal(SIGHUP, SIG_DFL);
1178 signal(SIGINT, SIG_DFL);
1179 signal(SIGQUIT, SIG_DFL);
1180 signal(SIGTERM, SIG_DFL);
1181 signal(SIGALRM, SIG_DFL);
1182
1183 execvp(args[0], args);
1184 exit(EXIT_FAILURE);
1185 }
1186
1187 void
1188 sigchld(int a) {
1189 int stat, ret;
1190
1191 if(waitpid(pid, &stat, 0) < 0)
1192 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1193
1194 ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE;
1195 if (ret != EXIT_SUCCESS)
1196 die("child finished with error '%d'\n", stat);
1197 exit(EXIT_SUCCESS);
1198 }
1199
1200 void
1201 ttynew(void) {
1202 int m, s;
1203 struct winsize w = {term.row, term.col, 0, 0};
1204
1205 /* seems to work fine on linux, openbsd and freebsd */
1206 if(openpty(&m, &s, NULL, NULL, &w) < 0)
1207 die("openpty failed: %s\n", strerror(errno));
1208
1209 switch(pid = fork()) {
1210 case -1:
1211 die("fork failed\n");
1212 break;
1213 case 0:
1214 setsid(); /* create a new process group */
1215 dup2(s, STDIN_FILENO);
1216 dup2(s, STDOUT_FILENO);
1217 dup2(s, STDERR_FILENO);
1218 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1219 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1220 close(s);
1221 close(m);
1222 execsh();
1223 break;
1224 default:
1225 close(s);
1226 cmdfd = m;
1227 signal(SIGCHLD, sigchld);
1228 if(opt_io) {
1229 term.mode |= MODE_PRINT;
1230 iofd = (!strcmp(opt_io, "-")) ?
1231 STDOUT_FILENO :
1232 open(opt_io, O_WRONLY | O_CREAT, 0666);
1233 if(iofd < 0) {
1234 fprintf(stderr, "Error opening %s:%s\n",
1235 opt_io, strerror(errno));
1236 }
1237 }
1238 break;
1239 }
1240 }
1241
1242 void
1243 ttyread(void) {
1244 static char buf[BUFSIZ];
1245 static int buflen = 0;
1246 char *ptr;
1247 char s[UTF_SIZ];
1248 int charsize; /* size of utf8 char in bytes */
1249 long unicodep;
1250 int ret;
1251
1252 /* append read bytes to unprocessed bytes */
1253 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1254 die("Couldn't read from shell: %s\n", strerror(errno));
1255
1256 /* process every complete utf8 char */
1257 buflen += ret;
1258 ptr = buf;
1259 while((charsize = utf8decode(ptr, &unicodep, buflen))) {
1260 utf8encode(unicodep, s, UTF_SIZ);
1261 tputc(s, charsize);
1262 ptr += charsize;
1263 buflen -= charsize;
1264 }
1265
1266 /* keep any uncomplete utf8 char for the next call */
1267 memmove(buf, ptr, buflen);
1268 }
1269
1270 void
1271 ttywrite(const char *s, size_t n) {
1272 if(xwrite(cmdfd, s, n) == -1)
1273 die("write error on tty: %s\n", strerror(errno));
1274 }
1275
1276 void
1277 ttysend(char *s, size_t n) {
1278 ttywrite(s, n);
1279 if(IS_SET(MODE_ECHO))
1280 techo(s, n);
1281 }
1282
1283 void
1284 ttyresize(void) {
1285 struct winsize w;
1286
1287 w.ws_row = term.row;
1288 w.ws_col = term.col;
1289 w.ws_xpixel = xw.tw;
1290 w.ws_ypixel = xw.th;
1291 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1292 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1293 }
1294
1295 int
1296 tattrset(int attr) {
1297 int i, j;
1298
1299 for(i = 0; i < term.row-1; i++) {
1300 for(j = 0; j < term.col-1; j++) {
1301 if(term.line[i][j].mode & attr)
1302 return 1;
1303 }
1304 }
1305
1306 return 0;
1307 }
1308
1309 void
1310 tsetdirt(int top, int bot) {
1311 int i;
1312
1313 LIMIT(top, 0, term.row-1);
1314 LIMIT(bot, 0, term.row-1);
1315
1316 for(i = top; i <= bot; i++)
1317 term.dirty[i] = 1;
1318 }
1319
1320 void
1321 tsetdirtattr(int attr) {
1322 int i, j;
1323
1324 for(i = 0; i < term.row-1; i++) {
1325 for(j = 0; j < term.col-1; j++) {
1326 if(term.line[i][j].mode & attr) {
1327 tsetdirt(i, i);
1328 break;
1329 }
1330 }
1331 }
1332 }
1333
1334 void
1335 tfulldirt(void) {
1336 tsetdirt(0, term.row-1);
1337 }
1338
1339 void
1340 tcursor(int mode) {
1341 static TCursor c[2];
1342 bool alt = IS_SET(MODE_ALTSCREEN);
1343
1344 if(mode == CURSOR_SAVE) {
1345 c[alt] = term.c;
1346 } else if(mode == CURSOR_LOAD) {
1347 term.c = c[alt];
1348 tmoveto(c[alt].x, c[alt].y);
1349 }
1350 }
1351
1352 void
1353 treset(void) {
1354 uint i;
1355
1356 term.c = (TCursor){{
1357 .mode = ATTR_NULL,
1358 .fg = defaultfg,
1359 .bg = defaultbg
1360 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1361
1362 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1363 for(i = tabspaces; i < term.col; i += tabspaces)
1364 term.tabs[i] = 1;
1365 term.top = 0;
1366 term.bot = term.row - 1;
1367 term.mode = MODE_WRAP;
1368 memset(term.trantbl, sizeof(term.trantbl), CS_USA);
1369 term.charset = 0;
1370
1371 for(i = 0; i < 2; i++) {
1372 tmoveto(0, 0);
1373 tcursor(CURSOR_SAVE);
1374 tclearregion(0, 0, term.col-1, term.row-1);
1375 tswapscreen();
1376 }
1377 }
1378
1379 void
1380 tnew(int col, int row) {
1381 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1382 tresize(col, row);
1383 term.numlock = 1;
1384
1385 treset();
1386 }
1387
1388 void
1389 tswapscreen(void) {
1390 Line *tmp = term.line;
1391
1392 term.line = term.alt;
1393 term.alt = tmp;
1394 term.mode ^= MODE_ALTSCREEN;
1395 tfulldirt();
1396 }
1397
1398 void
1399 tscrolldown(int orig, int n) {
1400 int i;
1401 Line temp;
1402
1403 LIMIT(n, 0, term.bot-orig+1);
1404
1405 tsetdirt(orig, term.bot-n);
1406 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1407
1408 for(i = term.bot; i >= orig+n; i--) {
1409 temp = term.line[i];
1410 term.line[i] = term.line[i-n];
1411 term.line[i-n] = temp;
1412 }
1413
1414 selscroll(orig, n);
1415 }
1416
1417 void
1418 tscrollup(int orig, int n) {
1419 int i;
1420 Line temp;
1421
1422 LIMIT(n, 0, term.bot-orig+1);
1423
1424 tclearregion(0, orig, term.col-1, orig+n-1);
1425 tsetdirt(orig+n, term.bot);
1426
1427 for(i = orig; i <= term.bot-n; i++) {
1428 temp = term.line[i];
1429 term.line[i] = term.line[i+n];
1430 term.line[i+n] = temp;
1431 }
1432
1433 selscroll(orig, -n);
1434 }
1435
1436 void
1437 selscroll(int orig, int n) {
1438 if(sel.ob.x == -1)
1439 return;
1440
1441 if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1442 if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1443 selclear(NULL);
1444 return;
1445 }
1446 if(sel.type == SEL_RECTANGULAR) {
1447 if(sel.ob.y < term.top)
1448 sel.ob.y = term.top;
1449 if(sel.oe.y > term.bot)
1450 sel.oe.y = term.bot;
1451 } else {
1452 if(sel.ob.y < term.top) {
1453 sel.ob.y = term.top;
1454 sel.ob.x = 0;
1455 }
1456 if(sel.oe.y > term.bot) {
1457 sel.oe.y = term.bot;
1458 sel.oe.x = term.col;
1459 }
1460 }
1461 selnormalize();
1462 }
1463 }
1464
1465 void
1466 tnewline(int first_col) {
1467 int y = term.c.y;
1468
1469 if(y == term.bot) {
1470 tscrollup(term.top, 1);
1471 } else {
1472 y++;
1473 }
1474 tmoveto(first_col ? 0 : term.c.x, y);
1475 }
1476
1477 void
1478 csiparse(void) {
1479 char *p = csiescseq.buf, *np;
1480 long int v;
1481
1482 csiescseq.narg = 0;
1483 if(*p == '?') {
1484 csiescseq.priv = 1;
1485 p++;
1486 }
1487
1488 csiescseq.buf[csiescseq.len] = '\0';
1489 while(p < csiescseq.buf+csiescseq.len) {
1490 np = NULL;
1491 v = strtol(p, &np, 10);
1492 if(np == p)
1493 v = 0;
1494 if(v == LONG_MAX || v == LONG_MIN)
1495 v = -1;
1496 csiescseq.arg[csiescseq.narg++] = v;
1497 p = np;
1498 if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1499 break;
1500 p++;
1501 }
1502 csiescseq.mode = *p;
1503 }
1504
1505 /* for absolute user moves, when decom is set */
1506 void
1507 tmoveato(int x, int y) {
1508 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1509 }
1510
1511 void
1512 tmoveto(int x, int y) {
1513 int miny, maxy;
1514
1515 if(term.c.state & CURSOR_ORIGIN) {
1516 miny = term.top;
1517 maxy = term.bot;
1518 } else {
1519 miny = 0;
1520 maxy = term.row - 1;
1521 }
1522 LIMIT(x, 0, term.col-1);
1523 LIMIT(y, miny, maxy);
1524 term.c.state &= ~CURSOR_WRAPNEXT;
1525 term.c.x = x;
1526 term.c.y = y;
1527 }
1528
1529 void
1530 tsetchar(char *c, Glyph *attr, int x, int y) {
1531 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1532 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1533 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1534 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1535 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1536 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1537 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1538 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1539 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1540 };
1541
1542 /*
1543 * The table is proudly stolen from rxvt.
1544 */
1545 if(term.trantbl[term.charset] == CS_GRAPHIC0) {
1546 if(BETWEEN(c[0], 0x41, 0x7e) && vt100_0[c[0] - 0x41]) {
1547 c = vt100_0[c[0] - 0x41];
1548 }
1549 }
1550
1551 if(term.line[y][x].mode & ATTR_WIDE) {
1552 if(x+1 < term.col) {
1553 term.line[y][x+1].c[0] = ' ';
1554 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1555 }
1556 } else if(term.line[y][x].mode & ATTR_WDUMMY) {
1557 term.line[y][x-1].c[0] = ' ';
1558 term.line[y][x-1].mode &= ~ATTR_WIDE;
1559 }
1560
1561 term.dirty[y] = 1;
1562 term.line[y][x] = *attr;
1563 memcpy(term.line[y][x].c, c, UTF_SIZ);
1564 }
1565
1566 void
1567 tclearregion(int x1, int y1, int x2, int y2) {
1568 int x, y, temp;
1569 Glyph *gp;
1570
1571 if(x1 > x2)
1572 temp = x1, x1 = x2, x2 = temp;
1573 if(y1 > y2)
1574 temp = y1, y1 = y2, y2 = temp;
1575
1576 LIMIT(x1, 0, term.col-1);
1577 LIMIT(x2, 0, term.col-1);
1578 LIMIT(y1, 0, term.row-1);
1579 LIMIT(y2, 0, term.row-1);
1580
1581 for(y = y1; y <= y2; y++) {
1582 term.dirty[y] = 1;
1583 for(x = x1; x <= x2; x++) {
1584 gp = &term.line[y][x];
1585 if(selected(x, y))
1586 selclear(NULL);
1587 gp->fg = term.c.attr.fg;
1588 gp->bg = term.c.attr.bg;
1589 gp->mode = 0;
1590 memcpy(gp->c, " ", 2);
1591 }
1592 }
1593 }
1594
1595 void
1596 tdeletechar(int n) {
1597 int dst, src, size;
1598 Glyph *line;
1599
1600 LIMIT(n, 0, term.col - term.c.x);
1601
1602 dst = term.c.x;
1603 src = term.c.x + n;
1604 size = term.col - src;
1605 line = term.line[term.c.y];
1606
1607 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1608 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1609 }
1610
1611 void
1612 tinsertblank(int n) {
1613 int dst, src, size;
1614 Glyph *line;
1615
1616 LIMIT(n, 0, term.col - term.c.x);
1617
1618 dst = term.c.x + n;
1619 src = term.c.x;
1620 size = term.col - dst;
1621 line = term.line[term.c.y];
1622
1623 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1624 tclearregion(src, term.c.y, dst - 1, term.c.y);
1625 }
1626
1627 void
1628 tinsertblankline(int n) {
1629 if(BETWEEN(term.c.y, term.top, term.bot))
1630 tscrolldown(term.c.y, n);
1631 }
1632
1633 void
1634 tdeleteline(int n) {
1635 if(BETWEEN(term.c.y, term.top, term.bot))
1636 tscrollup(term.c.y, n);
1637 }
1638
1639 int32_t
1640 tdefcolor(int *attr, int *npar, int l) {
1641 int32_t idx = -1;
1642 uint r, g, b;
1643
1644 switch (attr[*npar + 1]) {
1645 case 2: /* direct color in RGB space */
1646 if (*npar + 4 >= l) {
1647 fprintf(stderr,
1648 "erresc(38): Incorrect number of parameters (%d)\n",
1649 *npar);
1650 break;
1651 }
1652 r = attr[*npar + 2];
1653 g = attr[*npar + 3];
1654 b = attr[*npar + 4];
1655 *npar += 4;
1656 if(!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1657 fprintf(stderr, "erresc: bad rgb color (%d,%d,%d)\n",
1658 r, g, b);
1659 else
1660 idx = TRUECOLOR(r, g, b);
1661 break;
1662 case 5: /* indexed color */
1663 if (*npar + 2 >= l) {
1664 fprintf(stderr,
1665 "erresc(38): Incorrect number of parameters (%d)\n",
1666 *npar);
1667 break;
1668 }
1669 *npar += 2;
1670 if(!BETWEEN(attr[*npar], 0, 255))
1671 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1672 else
1673 idx = attr[*npar];
1674 break;
1675 case 0: /* implemented defined (only foreground) */
1676 case 1: /* transparent */
1677 case 3: /* direct color in CMY space */
1678 case 4: /* direct color in CMYK space */
1679 default:
1680 fprintf(stderr,
1681 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1682 break;
1683 }
1684
1685 return idx;
1686 }
1687
1688 void
1689 tsetattr(int *attr, int l) {
1690 int i;
1691 int32_t idx;
1692
1693 for(i = 0; i < l; i++) {
1694 switch(attr[i]) {
1695 case 0:
1696 term.c.attr.mode &= ~(
1697 ATTR_BOLD |
1698 ATTR_FAINT |
1699 ATTR_ITALIC |
1700 ATTR_UNDERLINE |
1701 ATTR_BLINK |
1702 ATTR_REVERSE |
1703 ATTR_INVISIBLE |
1704 ATTR_STRUCK );
1705 term.c.attr.fg = defaultfg;
1706 term.c.attr.bg = defaultbg;
1707 break;
1708 case 1:
1709 term.c.attr.mode |= ATTR_BOLD;
1710 break;
1711 case 2:
1712 term.c.attr.mode |= ATTR_FAINT;
1713 break;
1714 case 3:
1715 term.c.attr.mode |= ATTR_ITALIC;
1716 break;
1717 case 4:
1718 term.c.attr.mode |= ATTR_UNDERLINE;
1719 break;
1720 case 5: /* slow blink */
1721 /* FALLTHROUGH */
1722 case 6: /* rapid blink */
1723 term.c.attr.mode |= ATTR_BLINK;
1724 break;
1725 case 7:
1726 term.c.attr.mode |= ATTR_REVERSE;
1727 break;
1728 case 8:
1729 term.c.attr.mode |= ATTR_INVISIBLE;
1730 break;
1731 case 9:
1732 term.c.attr.mode |= ATTR_STRUCK;
1733 break;
1734 case 22:
1735 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
1736 break;
1737 case 23:
1738 term.c.attr.mode &= ~ATTR_ITALIC;
1739 break;
1740 case 24:
1741 term.c.attr.mode &= ~ATTR_UNDERLINE;
1742 break;
1743 case 25:
1744 term.c.attr.mode &= ~ATTR_BLINK;
1745 break;
1746 case 27:
1747 term.c.attr.mode &= ~ATTR_REVERSE;
1748 break;
1749 case 28:
1750 term.c.attr.mode &= ~ATTR_INVISIBLE;
1751 break;
1752 case 29:
1753 term.c.attr.mode &= ~ATTR_STRUCK;
1754 break;
1755 case 38:
1756 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1757 term.c.attr.fg = idx;
1758 break;
1759 case 39:
1760 term.c.attr.fg = defaultfg;
1761 break;
1762 case 48:
1763 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1764 term.c.attr.bg = idx;
1765 break;
1766 case 49:
1767 term.c.attr.bg = defaultbg;
1768 break;
1769 default:
1770 if(BETWEEN(attr[i], 30, 37)) {
1771 term.c.attr.fg = attr[i] - 30;
1772 } else if(BETWEEN(attr[i], 40, 47)) {
1773 term.c.attr.bg = attr[i] - 40;
1774 } else if(BETWEEN(attr[i], 90, 97)) {
1775 term.c.attr.fg = attr[i] - 90 + 8;
1776 } else if(BETWEEN(attr[i], 100, 107)) {
1777 term.c.attr.bg = attr[i] - 100 + 8;
1778 } else {
1779 fprintf(stderr,
1780 "erresc(default): gfx attr %d unknown\n",
1781 attr[i]), csidump();
1782 }
1783 break;
1784 }
1785 }
1786 }
1787
1788 void
1789 tsetscroll(int t, int b) {
1790 int temp;
1791
1792 LIMIT(t, 0, term.row-1);
1793 LIMIT(b, 0, term.row-1);
1794 if(t > b) {
1795 temp = t;
1796 t = b;
1797 b = temp;
1798 }
1799 term.top = t;
1800 term.bot = b;
1801 }
1802
1803 void
1804 tsetmode(bool priv, bool set, int *args, int narg) {
1805 int *lim, mode;
1806 bool alt;
1807
1808 for(lim = args + narg; args < lim; ++args) {
1809 if(priv) {
1810 switch(*args) {
1811 case 1: /* DECCKM -- Cursor key */
1812 MODBIT(term.mode, set, MODE_APPCURSOR);
1813 break;
1814 case 5: /* DECSCNM -- Reverse video */
1815 mode = term.mode;
1816 MODBIT(term.mode, set, MODE_REVERSE);
1817 if(mode != term.mode)
1818 redraw(REDRAW_TIMEOUT);
1819 break;
1820 case 6: /* DECOM -- Origin */
1821 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1822 tmoveato(0, 0);
1823 break;
1824 case 7: /* DECAWM -- Auto wrap */
1825 MODBIT(term.mode, set, MODE_WRAP);
1826 break;
1827 case 0: /* Error (IGNORED) */
1828 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1829 case 3: /* DECCOLM -- Column (IGNORED) */
1830 case 4: /* DECSCLM -- Scroll (IGNORED) */
1831 case 8: /* DECARM -- Auto repeat (IGNORED) */
1832 case 18: /* DECPFF -- Printer feed (IGNORED) */
1833 case 19: /* DECPEX -- Printer extent (IGNORED) */
1834 case 42: /* DECNRCM -- National characters (IGNORED) */
1835 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1836 break;
1837 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1838 MODBIT(term.mode, !set, MODE_HIDE);
1839 break;
1840 case 9: /* X10 mouse compatibility mode */
1841 xsetpointermotion(0);
1842 MODBIT(term.mode, 0, MODE_MOUSE);
1843 MODBIT(term.mode, set, MODE_MOUSEX10);
1844 break;
1845 case 1000: /* 1000: report button press */
1846 xsetpointermotion(0);
1847 MODBIT(term.mode, 0, MODE_MOUSE);
1848 MODBIT(term.mode, set, MODE_MOUSEBTN);
1849 break;
1850 case 1002: /* 1002: report motion on button press */
1851 xsetpointermotion(0);
1852 MODBIT(term.mode, 0, MODE_MOUSE);
1853 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1854 break;
1855 case 1003: /* 1003: enable all mouse motions */
1856 xsetpointermotion(set);
1857 MODBIT(term.mode, 0, MODE_MOUSE);
1858 MODBIT(term.mode, set, MODE_MOUSEMANY);
1859 break;
1860 case 1004: /* 1004: send focus events to tty */
1861 MODBIT(term.mode, set, MODE_FOCUS);
1862 break;
1863 case 1006: /* 1006: extended reporting mode */
1864 MODBIT(term.mode, set, MODE_MOUSESGR);
1865 break;
1866 case 1034:
1867 MODBIT(term.mode, set, MODE_8BIT);
1868 break;
1869 case 1049: /* swap screen & set/restore cursor as xterm */
1870 if (!allowaltscreen)
1871 break;
1872 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1873 /* FALLTHROUGH */
1874 case 47: /* swap screen */
1875 case 1047:
1876 if (!allowaltscreen)
1877 break;
1878 alt = IS_SET(MODE_ALTSCREEN);
1879 if(alt) {
1880 tclearregion(0, 0, term.col-1,
1881 term.row-1);
1882 }
1883 if(set ^ alt) /* set is always 1 or 0 */
1884 tswapscreen();
1885 if(*args != 1049)
1886 break;
1887 /* FALLTHROUGH */
1888 case 1048:
1889 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1890 break;
1891 case 2004: /* 2004: bracketed paste mode */
1892 MODBIT(term.mode, set, MODE_BRCKTPASTE);
1893 break;
1894 /* Not implemented mouse modes. See comments there. */
1895 case 1001: /* mouse highlight mode; can hang the
1896 terminal by design when implemented. */
1897 case 1005: /* UTF-8 mouse mode; will confuse
1898 applications not supporting UTF-8
1899 and luit. */
1900 case 1015: /* urxvt mangled mouse mode; incompatible
1901 and can be mistaken for other control
1902 codes. */
1903 default:
1904 fprintf(stderr,
1905 "erresc: unknown private set/reset mode %d\n",
1906 *args);
1907 break;
1908 }
1909 } else {
1910 switch(*args) {
1911 case 0: /* Error (IGNORED) */
1912 break;
1913 case 2: /* KAM -- keyboard action */
1914 MODBIT(term.mode, set, MODE_KBDLOCK);
1915 break;
1916 case 4: /* IRM -- Insertion-replacement */
1917 MODBIT(term.mode, set, MODE_INSERT);
1918 break;
1919 case 12: /* SRM -- Send/Receive */
1920 MODBIT(term.mode, !set, MODE_ECHO);
1921 break;
1922 case 20: /* LNM -- Linefeed/new line */
1923 MODBIT(term.mode, set, MODE_CRLF);
1924 break;
1925 default:
1926 fprintf(stderr,
1927 "erresc: unknown set/reset mode %d\n",
1928 *args);
1929 break;
1930 }
1931 }
1932 }
1933 }
1934
1935 void
1936 csihandle(void) {
1937 char buf[40];
1938 int len;
1939
1940 switch(csiescseq.mode) {
1941 default:
1942 unknown:
1943 fprintf(stderr, "erresc: unknown csi ");
1944 csidump();
1945 /* die(""); */
1946 break;
1947 case '@': /* ICH -- Insert <n> blank char */
1948 DEFAULT(csiescseq.arg[0], 1);
1949 tinsertblank(csiescseq.arg[0]);
1950 break;
1951 case 'A': /* CUU -- Cursor <n> Up */
1952 DEFAULT(csiescseq.arg[0], 1);
1953 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1954 break;
1955 case 'B': /* CUD -- Cursor <n> Down */
1956 case 'e': /* VPR --Cursor <n> Down */
1957 DEFAULT(csiescseq.arg[0], 1);
1958 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1959 break;
1960 case 'i': /* MC -- Media Copy */
1961 switch(csiescseq.arg[0]) {
1962 case 0:
1963 tdump();
1964 break;
1965 case 1:
1966 tdumpline(term.c.y);
1967 break;
1968 case 2:
1969 tdumpsel();
1970 break;
1971 case 4:
1972 term.mode &= ~MODE_PRINT;
1973 break;
1974 case 5:
1975 term.mode |= MODE_PRINT;
1976 break;
1977 }
1978 break;
1979 case 'c': /* DA -- Device Attributes */
1980 if(csiescseq.arg[0] == 0)
1981 ttywrite(vtiden, sizeof(vtiden) - 1);
1982 break;
1983 case 'C': /* CUF -- Cursor <n> Forward */
1984 case 'a': /* HPR -- Cursor <n> Forward */
1985 DEFAULT(csiescseq.arg[0], 1);
1986 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1987 break;
1988 case 'D': /* CUB -- Cursor <n> Backward */
1989 DEFAULT(csiescseq.arg[0], 1);
1990 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1991 break;
1992 case 'E': /* CNL -- Cursor <n> Down and first col */
1993 DEFAULT(csiescseq.arg[0], 1);
1994 tmoveto(0, term.c.y+csiescseq.arg[0]);
1995 break;
1996 case 'F': /* CPL -- Cursor <n> Up and first col */
1997 DEFAULT(csiescseq.arg[0], 1);
1998 tmoveto(0, term.c.y-csiescseq.arg[0]);
1999 break;
2000 case 'g': /* TBC -- Tabulation clear */
2001 switch(csiescseq.arg[0]) {
2002 case 0: /* clear current tab stop */
2003 term.tabs[term.c.x] = 0;
2004 break;
2005 case 3: /* clear all the tabs */
2006 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2007 break;
2008 default:
2009 goto unknown;
2010 }
2011 break;
2012 case 'G': /* CHA -- Move to <col> */
2013 case '`': /* HPA */
2014 DEFAULT(csiescseq.arg[0], 1);
2015 tmoveto(csiescseq.arg[0]-1, term.c.y);
2016 break;
2017 case 'H': /* CUP -- Move to <row> <col> */
2018 case 'f': /* HVP */
2019 DEFAULT(csiescseq.arg[0], 1);
2020 DEFAULT(csiescseq.arg[1], 1);
2021 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2022 break;
2023 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2024 DEFAULT(csiescseq.arg[0], 1);
2025 tputtab(csiescseq.arg[0]);
2026 break;
2027 case 'J': /* ED -- Clear screen */
2028 selclear(NULL);
2029 switch(csiescseq.arg[0]) {
2030 case 0: /* below */
2031 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2032 if(term.c.y < term.row-1) {
2033 tclearregion(0, term.c.y+1, term.col-1,
2034 term.row-1);
2035 }
2036 break;
2037 case 1: /* above */
2038 if(term.c.y > 1)
2039 tclearregion(0, 0, term.col-1, term.c.y-1);
2040 tclearregion(0, term.c.y, term.c.x, term.c.y);
2041 break;
2042 case 2: /* all */
2043 tclearregion(0, 0, term.col-1, term.row-1);
2044 break;
2045 default:
2046 goto unknown;
2047 }
2048 break;
2049 case 'K': /* EL -- Clear line */
2050 switch(csiescseq.arg[0]) {
2051 case 0: /* right */
2052 tclearregion(term.c.x, term.c.y, term.col-1,
2053 term.c.y);
2054 break;
2055 case 1: /* left */
2056 tclearregion(0, term.c.y, term.c.x, term.c.y);
2057 break;
2058 case 2: /* all */
2059 tclearregion(0, term.c.y, term.col-1, term.c.y);
2060 break;
2061 }
2062 break;
2063 case 'S': /* SU -- Scroll <n> line up */
2064 DEFAULT(csiescseq.arg[0], 1);
2065 tscrollup(term.top, csiescseq.arg[0]);
2066 break;
2067 case 'T': /* SD -- Scroll <n> line down */
2068 DEFAULT(csiescseq.arg[0], 1);
2069 tscrolldown(term.top, csiescseq.arg[0]);
2070 break;
2071 case 'L': /* IL -- Insert <n> blank lines */
2072 DEFAULT(csiescseq.arg[0], 1);
2073 tinsertblankline(csiescseq.arg[0]);
2074 break;
2075 case 'l': /* RM -- Reset Mode */
2076 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2077 break;
2078 case 'M': /* DL -- Delete <n> lines */
2079 DEFAULT(csiescseq.arg[0], 1);
2080 tdeleteline(csiescseq.arg[0]);
2081 break;
2082 case 'X': /* ECH -- Erase <n> char */
2083 DEFAULT(csiescseq.arg[0], 1);
2084 tclearregion(term.c.x, term.c.y,
2085 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2086 break;
2087 case 'P': /* DCH -- Delete <n> char */
2088 DEFAULT(csiescseq.arg[0], 1);
2089 tdeletechar(csiescseq.arg[0]);
2090 break;
2091 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2092 DEFAULT(csiescseq.arg[0], 1);
2093 tputtab(-csiescseq.arg[0]);
2094 break;
2095 case 'd': /* VPA -- Move to <row> */
2096 DEFAULT(csiescseq.arg[0], 1);
2097 tmoveato(term.c.x, csiescseq.arg[0]-1);
2098 break;
2099 case 'h': /* SM -- Set terminal mode */
2100 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2101 break;
2102 case 'm': /* SGR -- Terminal attribute (color) */
2103 tsetattr(csiescseq.arg, csiescseq.narg);
2104 break;
2105 case 'n': /* DSR – Device Status Report (cursor position) */
2106 if (csiescseq.arg[0] == 6) {
2107 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2108 term.c.y+1, term.c.x+1);
2109 ttywrite(buf, len);
2110 }
2111 break;
2112 case 'r': /* DECSTBM -- Set Scrolling Region */
2113 if(csiescseq.priv) {
2114 goto unknown;
2115 } else {
2116 DEFAULT(csiescseq.arg[0], 1);
2117 DEFAULT(csiescseq.arg[1], term.row);
2118 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2119 tmoveato(0, 0);
2120 }
2121 break;
2122 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2123 tcursor(CURSOR_SAVE);
2124 break;
2125 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2126 tcursor(CURSOR_LOAD);
2127 break;
2128 }
2129 }
2130
2131 void
2132 csidump(void) {
2133 int i;
2134 uint c;
2135
2136 printf("ESC[");
2137 for(i = 0; i < csiescseq.len; i++) {
2138 c = csiescseq.buf[i] & 0xff;
2139 if(isprint(c)) {
2140 putchar(c);
2141 } else if(c == '\n') {
2142 printf("(\\n)");
2143 } else if(c == '\r') {
2144 printf("(\\r)");
2145 } else if(c == 0x1b) {
2146 printf("(\\e)");
2147 } else {
2148 printf("(%02x)", c);
2149 }
2150 }
2151 putchar('\n');
2152 }
2153
2154 void
2155 csireset(void) {
2156 memset(&csiescseq, 0, sizeof(csiescseq));
2157 }
2158
2159 void
2160 strhandle(void) {
2161 char *p = NULL;
2162 int j, narg, par;
2163
2164 term.esc &= ~(ESC_STR_END|ESC_STR);
2165 strparse();
2166 narg = strescseq.narg;
2167 par = atoi(strescseq.args[0]);
2168
2169 switch(strescseq.type) {
2170 case ']': /* OSC -- Operating System Command */
2171 switch(par) {
2172 case 0:
2173 case 1:
2174 case 2:
2175 if(narg > 1)
2176 xsettitle(strescseq.args[1]);
2177 return;
2178 case 4: /* color set */
2179 if(narg < 3)
2180 break;
2181 p = strescseq.args[2];
2182 /* FALLTHROUGH */
2183 case 104: /* color reset, here p = NULL */
2184 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2185 if(xsetcolorname(j, p)) {
2186 fprintf(stderr, "erresc: invalid color %s\n", p);
2187 } else {
2188 /*
2189 * TODO if defaultbg color is changed, borders
2190 * are dirty
2191 */
2192 redraw(0);
2193 }
2194 return;
2195 }
2196 break;
2197 case 'k': /* old title set compatibility */
2198 xsettitle(strescseq.args[0]);
2199 return;
2200 case 'P': /* DCS -- Device Control String */
2201 case '_': /* APC -- Application Program Command */
2202 case '^': /* PM -- Privacy Message */
2203 return;
2204 }
2205
2206 fprintf(stderr, "erresc: unknown str ");
2207 strdump();
2208 }
2209
2210 void
2211 strparse(void) {
2212 char *p = strescseq.buf;
2213
2214 strescseq.narg = 0;
2215 strescseq.buf[strescseq.len] = '\0';
2216 while(p && strescseq.narg < STR_ARG_SIZ)
2217 strescseq.args[strescseq.narg++] = strsep(&p, ";");
2218 }
2219
2220 void
2221 strdump(void) {
2222 int i;
2223 uint c;
2224
2225 printf("ESC%c", strescseq.type);
2226 for(i = 0; i < strescseq.len; i++) {
2227 c = strescseq.buf[i] & 0xff;
2228 if(c == '\0') {
2229 return;
2230 } else if(isprint(c)) {
2231 putchar(c);
2232 } else if(c == '\n') {
2233 printf("(\\n)");
2234 } else if(c == '\r') {
2235 printf("(\\r)");
2236 } else if(c == 0x1b) {
2237 printf("(\\e)");
2238 } else {
2239 printf("(%02x)", c);
2240 }
2241 }
2242 printf("ESC\\\n");
2243 }
2244
2245 void
2246 strreset(void) {
2247 memset(&strescseq, 0, sizeof(strescseq));
2248 }
2249
2250 void
2251 tprinter(char *s, size_t len) {
2252 if(iofd != -1 && xwrite(iofd, s, len) < 0) {
2253 fprintf(stderr, "Error writing in %s:%s\n",
2254 opt_io, strerror(errno));
2255 close(iofd);
2256 iofd = -1;
2257 }
2258 }
2259
2260 void
2261 toggleprinter(const Arg *arg) {
2262 term.mode ^= MODE_PRINT;
2263 }
2264
2265 void
2266 printscreen(const Arg *arg) {
2267 tdump();
2268 }
2269
2270 void
2271 printsel(const Arg *arg) {
2272 tdumpsel();
2273 }
2274
2275 void
2276 tdumpsel(void) {
2277 char *ptr;
2278
2279 if((ptr = getsel())) {
2280 tprinter(ptr, strlen(ptr));
2281 free(ptr);
2282 }
2283 }
2284
2285 void
2286 tdumpline(int n) {
2287 Glyph *bp, *end;
2288
2289 bp = &term.line[n][0];
2290 end = &bp[MIN(tlinelen(n), term.col) - 1];
2291 if(bp != end || bp->c[0] != ' ') {
2292 for( ;bp <= end; ++bp)
2293 tprinter(bp->c, utf8len(bp->c));
2294 }
2295 tprinter("\n", 1);
2296 }
2297
2298 void
2299 tdump(void) {
2300 int i;
2301
2302 for(i = 0; i < term.row; ++i)
2303 tdumpline(i);
2304 }
2305
2306 void
2307 tputtab(int n) {
2308 uint x = term.c.x;
2309
2310 if(n > 0) {
2311 while(x < term.col && n--)
2312 for(++x; x < term.col && !term.tabs[x]; ++x)
2313 /* nothing */ ;
2314 } else if(n < 0) {
2315 while(x > 0 && n++)
2316 for(--x; x > 0 && !term.tabs[x]; --x)
2317 /* nothing */ ;
2318 }
2319 tmoveto(x, term.c.y);
2320 }
2321
2322 void
2323 techo(char *buf, int len) {
2324 for(; len > 0; buf++, len--) {
2325 char c = *buf;
2326
2327 if(ISCONTROL((uchar) c)) { /* control code */
2328 if(c & 0x80) {
2329 c &= 0x7f;
2330 tputc("^", 1);
2331 tputc("[", 1);
2332 } else if(c != '\n' && c != '\r' && c != '\t') {
2333 c ^= 0x40;
2334 tputc("^", 1);
2335 }
2336 tputc(&c, 1);
2337 } else {
2338 break;
2339 }
2340 }
2341 if(len)
2342 tputc(buf, len);
2343 }
2344
2345 void
2346 tdeftran(char ascii) {
2347 static char cs[] = "0B";
2348 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2349 char *p;
2350
2351 if((p = strchr(cs, ascii)) == NULL) {
2352 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2353 } else {
2354 term.trantbl[term.icharset] = vcs[p - cs];
2355 }
2356 }
2357
2358 void
2359 tdectest(char c) {
2360 static char E[UTF_SIZ] = "E";
2361 int x, y;
2362
2363 if(c == '8') { /* DEC screen alignment test. */
2364 for(x = 0; x < term.col; ++x) {
2365 for(y = 0; y < term.row; ++y)
2366 tsetchar(E, &term.c.attr, x, y);
2367 }
2368 }
2369 }
2370
2371 void
2372 tstrsequence(uchar c) {
2373 if (c & 0x80) {
2374 switch (c) {
2375 case 0x90: /* DCS -- Device Control String */
2376 c = 'P';
2377 break;
2378 case 0x9f: /* APC -- Application Program Command */
2379 c = '_';
2380 break;
2381 case 0x9e: /* PM -- Privacy Message */
2382 c = '^';
2383 break;
2384 case 0x9d: /* OSC -- Operating System Command */
2385 c = ']';
2386 break;
2387 }
2388 }
2389 strreset();
2390 strescseq.type = c;
2391 term.esc |= ESC_STR;
2392 return;
2393 }
2394
2395 void
2396 tcontrolcode(uchar ascii) {
2397 static char question[UTF_SIZ] = "?";
2398
2399 switch(ascii) {
2400 case '\t': /* HT */
2401 tputtab(1);
2402 return;
2403 case '\b': /* BS */
2404 tmoveto(term.c.x-1, term.c.y);
2405 return;
2406 case '\r': /* CR */
2407 tmoveto(0, term.c.y);
2408 return;
2409 case '\f': /* LF */
2410 case '\v': /* VT */
2411 case '\n': /* LF */
2412 /* go to first col if the mode is set */
2413 tnewline(IS_SET(MODE_CRLF));
2414 return;
2415 case '\a': /* BEL */
2416 if(term.esc & ESC_STR_END) {
2417 /* backwards compatibility to xterm */
2418 strhandle();
2419 } else {
2420 if(!(xw.state & WIN_FOCUSED))
2421 xseturgency(1);
2422 if (bellvolume)
2423 XBell(xw.dpy, bellvolume);
2424 }
2425 break;
2426 case '\033': /* ESC */
2427 csireset();
2428 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2429 term.esc |= ESC_START;
2430 return;
2431 case '\016': /* SO */
2432 term.charset = 0;
2433 return;
2434 case '\017': /* SI */
2435 term.charset = 1;
2436 return;
2437 case '\032': /* SUB */
2438 tsetchar(question, &term.c.attr, term.c.x, term.c.y);
2439 case '\030': /* CAN */
2440 csireset();
2441 break;
2442 case '\005': /* ENQ (IGNORED) */
2443 case '\000': /* NUL (IGNORED) */
2444 case '\021': /* XON (IGNORED) */
2445 case '\023': /* XOFF (IGNORED) */
2446 case 0177: /* DEL (IGNORED) */
2447 return;
2448 case 0x84: /* TODO: IND */
2449 break;
2450 case 0x85: /* NEL -- Next line */
2451 tnewline(1); /* always go to first col */
2452 break;
2453 case 0x88: /* HTS -- Horizontal tab stop */
2454 term.tabs[term.c.x] = 1;
2455 break;
2456 case 0x8d: /* TODO: RI */
2457 case 0x8e: /* TODO: SS2 */
2458 case 0x8f: /* TODO: SS3 */
2459 case 0x98: /* TODO: SOS */
2460 break;
2461 case 0x9a: /* DECID -- Identify Terminal */
2462 ttywrite(vtiden, sizeof(vtiden) - 1);
2463 break;
2464 case 0x9b: /* TODO: CSI */
2465 case 0x9c: /* TODO: ST */
2466 break;
2467 case 0x90: /* DCS -- Device Control String */
2468 case 0x9f: /* APC -- Application Program Command */
2469 case 0x9e: /* PM -- Privacy Message */
2470 case 0x9d: /* OSC -- Operating System Command */
2471 tstrsequence(ascii);
2472 return;
2473 }
2474 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2475 term.esc &= ~(ESC_STR_END|ESC_STR);
2476 return;
2477 }
2478
2479 /*
2480 * returns 1 when the sequence is finished and it hasn't to read
2481 * more characters for this sequence, otherwise 0
2482 */
2483 int
2484 eschandle(uchar ascii) {
2485 switch(ascii) {
2486 case '[':
2487 term.esc |= ESC_CSI;
2488 return 0;
2489 case '#':
2490 term.esc |= ESC_TEST;
2491 return 0;
2492 case 'P': /* DCS -- Device Control String */
2493 case '_': /* APC -- Application Program Command */
2494 case '^': /* PM -- Privacy Message */
2495 case ']': /* OSC -- Operating System Command */
2496 case 'k': /* old title set compatibility */
2497 tstrsequence(ascii);
2498 return 0;
2499 case '(': /* GZD4 -- set primary charset G0 */
2500 case ')': /* G1D4 -- set secondary charset G1 */
2501 case '*': /* G2D4 -- set tertiary charset G2 */
2502 case '+': /* G3D4 -- set quaternary charset G3 */
2503 term.icharset = ascii - '(';
2504 term.esc |= ESC_ALTCHARSET;
2505 return 0;
2506 case 'D': /* IND -- Linefeed */
2507 if(term.c.y == term.bot) {
2508 tscrollup(term.top, 1);
2509 } else {
2510 tmoveto(term.c.x, term.c.y+1);
2511 }
2512 break;
2513 case 'E': /* NEL -- Next line */
2514 tnewline(1); /* always go to first col */
2515 break;
2516 case 'H': /* HTS -- Horizontal tab stop */
2517 term.tabs[term.c.x] = 1;
2518 break;
2519 case 'M': /* RI -- Reverse index */
2520 if(term.c.y == term.top) {
2521 tscrolldown(term.top, 1);
2522 } else {
2523 tmoveto(term.c.x, term.c.y-1);
2524 }
2525 break;
2526 case 'Z': /* DECID -- Identify Terminal */
2527 ttywrite(vtiden, sizeof(vtiden) - 1);
2528 break;
2529 case 'c': /* RIS -- Reset to inital state */
2530 treset();
2531 xresettitle();
2532 xloadcols();
2533 break;
2534 case '=': /* DECPAM -- Application keypad */
2535 term.mode |= MODE_APPKEYPAD;
2536 break;
2537 case '>': /* DECPNM -- Normal keypad */
2538 term.mode &= ~MODE_APPKEYPAD;
2539 break;
2540 case '7': /* DECSC -- Save Cursor */
2541 tcursor(CURSOR_SAVE);
2542 break;
2543 case '8': /* DECRC -- Restore Cursor */
2544 tcursor(CURSOR_LOAD);
2545 break;
2546 case '\\': /* ST -- String Terminator */
2547 if(term.esc & ESC_STR_END)
2548 strhandle();
2549 break;
2550 default:
2551 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2552 (uchar) ascii, isprint(ascii)? ascii:'.');
2553 break;
2554 }
2555 return 1;
2556 }
2557
2558 void
2559 tputc(char *c, int len) {
2560 uchar ascii;
2561 bool control;
2562 long unicodep;
2563 int width;
2564 Glyph *gp;
2565
2566 if(len == 1) {
2567 width = 1;
2568 unicodep = ascii = *c;
2569 } else {
2570 utf8decode(c, &unicodep, UTF_SIZ);
2571 width = wcwidth(unicodep);
2572 control = ISCONTROLC1(unicodep);
2573 ascii = unicodep;
2574 }
2575
2576 if(IS_SET(MODE_PRINT))
2577 tprinter(c, len);
2578 control = ISCONTROL(unicodep);
2579
2580 /*
2581 * STR sequence must be checked before anything else
2582 * because it uses all following characters until it
2583 * receives a ESC, a SUB, a ST or any other C1 control
2584 * character.
2585 */
2586 if(term.esc & ESC_STR) {
2587 if(width == 1 &&
2588 (ascii == '\a' || ascii == 030 ||
2589 ascii == 032 || ascii == 033 ||
2590 ISCONTROLC1(unicodep))) {
2591 term.esc &= ~(ESC_START|ESC_STR);
2592 term.esc |= ESC_STR_END;
2593 } else if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
2594 memmove(&strescseq.buf[strescseq.len], c, len);
2595 strescseq.len += len;
2596 return;
2597 } else {
2598 /*
2599 * Here is a bug in terminals. If the user never sends
2600 * some code to stop the str or esc command, then st
2601 * will stop responding. But this is better than
2602 * silently failing with unknown characters. At least
2603 * then users will report back.
2604 *
2605 * In the case users ever get fixed, here is the code:
2606 */
2607 /*
2608 * term.esc = 0;
2609 * strhandle();
2610 */
2611 return;
2612 }
2613 }
2614
2615 /*
2616 * Actions of control codes must be performed as soon they arrive
2617 * because they can be embedded inside a control sequence, and
2618 * they must not cause conflicts with sequences.
2619 */
2620 if(control) {
2621 tcontrolcode(ascii);
2622 /*
2623 * control codes are not shown ever
2624 */
2625 return;
2626 } else if(term.esc & ESC_START) {
2627 if(term.esc & ESC_CSI) {
2628 csiescseq.buf[csiescseq.len++] = ascii;
2629 if(BETWEEN(ascii, 0x40, 0x7E)
2630 || csiescseq.len >= \
2631 sizeof(csiescseq.buf)-1) {
2632 term.esc = 0;
2633 csiparse();
2634 csihandle();
2635 }
2636 return;
2637 } else if(term.esc & ESC_ALTCHARSET) {
2638 tdeftran(ascii);
2639 } else if(term.esc & ESC_TEST) {
2640 tdectest(ascii);
2641 } else {
2642 if (!eschandle(ascii))
2643 return;
2644 /* sequence already finished */
2645 }
2646 term.esc = 0;
2647 /*
2648 * All characters which form part of a sequence are not
2649 * printed
2650 */
2651 return;
2652 }
2653 if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
2654 selclear(NULL);
2655
2656 gp = &term.line[term.c.y][term.c.x];
2657 if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2658 gp->mode |= ATTR_WRAP;
2659 tnewline(1);
2660 }
2661
2662 if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col)
2663 memmove(gp+1, gp, (term.col - term.c.x - 1) * sizeof(Glyph));
2664
2665 if(term.c.x+width > term.col)
2666 tnewline(1);
2667
2668 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2669
2670 if(width == 2) {
2671 gp->mode |= ATTR_WIDE;
2672 if(term.c.x+1 < term.col) {
2673 gp[1].c[0] = '\0';
2674 gp[1].mode = ATTR_WDUMMY;
2675 }
2676 }
2677 if(term.c.x+width < term.col) {
2678 tmoveto(term.c.x+width, term.c.y);
2679 } else {
2680 term.c.state |= CURSOR_WRAPNEXT;
2681 }
2682 }
2683
2684 void
2685 tresize(int col, int row) {
2686 int i;
2687 int minrow = MIN(row, term.row);
2688 int mincol = MIN(col, term.col);
2689 int slide = term.c.y - row + 1;
2690 bool *bp;
2691 TCursor c;
2692
2693 if(col < 1 || row < 1) {
2694 fprintf(stderr,
2695 "tresize: error resizing to %dx%d\n", col, row);
2696 return;
2697 }
2698
2699 /* free unneeded rows */
2700 i = 0;
2701 if(slide > 0) {
2702 /*
2703 * slide screen to keep cursor where we expect it -
2704 * tscrollup would work here, but we can optimize to
2705 * memmove because we're freeing the earlier lines
2706 */
2707 for(/* i = 0 */; i < slide; i++) {
2708 free(term.line[i]);
2709 free(term.alt[i]);
2710 }
2711 memmove(term.line, term.line + slide, row * sizeof(Line));
2712 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2713 }
2714 for(i += row; i < term.row; i++) {
2715 free(term.line[i]);
2716 free(term.alt[i]);
2717 }
2718
2719 /* resize to new height */
2720 term.line = xrealloc(term.line, row * sizeof(Line));
2721 term.alt = xrealloc(term.alt, row * sizeof(Line));
2722 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2723 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2724
2725 /* resize each row to new width, zero-pad if needed */
2726 for(i = 0; i < minrow; i++) {
2727 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2728 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2729 }
2730
2731 /* allocate any new rows */
2732 for(/* i == minrow */; i < row; i++) {
2733 term.line[i] = xmalloc(col * sizeof(Glyph));
2734 term.alt[i] = xmalloc(col * sizeof(Glyph));
2735 }
2736 if(col > term.col) {
2737 bp = term.tabs + term.col;
2738
2739 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2740 while(--bp > term.tabs && !*bp)
2741 /* nothing */ ;
2742 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2743 *bp = 1;
2744 }
2745 /* update terminal size */
2746 term.col = col;
2747 term.row = row;
2748 /* reset scrolling region */
2749 tsetscroll(0, row-1);
2750 /* make use of the LIMIT in tmoveto */
2751 tmoveto(term.c.x, term.c.y);
2752 /* Clearing both screens (it makes dirty all lines) */
2753 c = term.c;
2754 for(i = 0; i < 2; i++) {
2755 if(mincol < col && 0 < minrow) {
2756 tclearregion(mincol, 0, col - 1, minrow - 1);
2757 }
2758 if(0 < col && minrow < row) {
2759 tclearregion(0, minrow, col - 1, row - 1);
2760 }
2761 tswapscreen();
2762 tcursor(CURSOR_LOAD);
2763 }
2764 term.c = c;
2765 }
2766
2767 void
2768 xresize(int col, int row) {
2769 xw.tw = MAX(1, col * xw.cw);
2770 xw.th = MAX(1, row * xw.ch);
2771
2772 XFreePixmap(xw.dpy, xw.buf);
2773 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2774 DefaultDepth(xw.dpy, xw.scr));
2775 XftDrawChange(xw.draw, xw.buf);
2776 xclear(0, 0, xw.w, xw.h);
2777 }
2778
2779 static inline ushort
2780 sixd_to_16bit(int x) {
2781 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
2782 }
2783
2784 void
2785 xloadcols(void) {
2786 int i;
2787 XRenderColor color = { .alpha = 0xffff };
2788 static bool loaded;
2789 Color *cp;
2790
2791 if(loaded) {
2792 for (cp = dc.col; cp < dc.col + LEN(dc.col); ++cp)
2793 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
2794 }
2795
2796 /* load colors [0-15] and [256-LEN(colorname)] (config.h) */
2797 for(i = 0; i < LEN(colorname); i++) {
2798 if(!colorname[i])
2799 continue;
2800 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2801 die("Could not allocate color '%s'\n", colorname[i]);
2802 }
2803 }
2804
2805 /* load colors [16-231] ; same colors as xterm */
2806 for(i = 16; i < 6*6*6+16; i++) {
2807 color.red = sixd_to_16bit( ((i-16)/36)%6 );
2808 color.green = sixd_to_16bit( ((i-16)/6) %6 );
2809 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
2810 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i]))
2811 die("Could not allocate color %d\n", i);
2812 }
2813
2814 /* load colors [232-255] ; grayscale */
2815 for(; i < 256; i++) {
2816 color.red = color.green = color.blue = 0x0808 + 0x0a0a * (i-(6*6*6+16));
2817 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i]))
2818 die("Could not allocate color %d\n", i);
2819 }
2820 loaded = true;
2821 }
2822
2823 int
2824 xsetcolorname(int x, const char *name) {
2825 XRenderColor color = { .alpha = 0xffff };
2826 Color ncolor;
2827
2828 if(!BETWEEN(x, 0, LEN(colorname)))
2829 return 1;
2830
2831 if(!name) {
2832 if(BETWEEN(x, 16, 16 + 215)) { /* 256 color */
2833 color.red = sixd_to_16bit( ((x-16)/36)%6 );
2834 color.green = sixd_to_16bit( ((x-16)/6) %6 );
2835 color.blue = sixd_to_16bit( ((x-16)/1) %6 );
2836 if(!XftColorAllocValue(xw.dpy, xw.vis,
2837 xw.cmap, &color, &ncolor)) {
2838 return 1;
2839 }
2840
2841 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
2842 dc.col[x] = ncolor;
2843 return 0;
2844 } else if(BETWEEN(x, 16 + 216, 255)) { /* greyscale */
2845 color.red = color.green = color.blue = \
2846 0x0808 + 0x0a0a * (x - (16 + 216));
2847 if(!XftColorAllocValue(xw.dpy, xw.vis,
2848 xw.cmap, &color, &ncolor)) {
2849 return 1;
2850 }
2851
2852 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
2853 dc.col[x] = ncolor;
2854 return 0;
2855 } else { /* system colors */
2856 name = colorname[x];
2857 }
2858 }
2859 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &ncolor))
2860 return 1;
2861
2862 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
2863 dc.col[x] = ncolor;
2864 return 0;
2865 }
2866
2867 void
2868 xtermclear(int col1, int row1, int col2, int row2) {
2869 XftDrawRect(xw.draw,
2870 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2871 borderpx + col1 * xw.cw,
2872 borderpx + row1 * xw.ch,
2873 (col2-col1+1) * xw.cw,
2874 (row2-row1+1) * xw.ch);
2875 }
2876
2877 /*
2878 * Absolute coordinates.
2879 */
2880 void
2881 xclear(int x1, int y1, int x2, int y2) {
2882 XftDrawRect(xw.draw,
2883 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2884 x1, y1, x2-x1, y2-y1);
2885 }
2886
2887 void
2888 xhints(void) {
2889 XClassHint class = {opt_class ? opt_class : termname, termname};
2890 XWMHints wm = {.flags = InputHint, .input = 1};
2891 XSizeHints *sizeh = NULL;
2892
2893 sizeh = XAllocSizeHints();
2894
2895 sizeh->flags = PSize | PResizeInc | PBaseSize;
2896 sizeh->height = xw.h;
2897 sizeh->width = xw.w;
2898 sizeh->height_inc = xw.ch;
2899 sizeh->width_inc = xw.cw;
2900 sizeh->base_height = 2 * borderpx;
2901 sizeh->base_width = 2 * borderpx;
2902 if(xw.isfixed == True) {
2903 sizeh->flags |= PMaxSize | PMinSize;
2904 sizeh->min_width = sizeh->max_width = xw.w;
2905 sizeh->min_height = sizeh->max_height = xw.h;
2906 }
2907 if(xw.gm & (XValue|YValue)) {
2908 sizeh->flags |= USPosition | PWinGravity;
2909 sizeh->x = xw.l;
2910 sizeh->y = xw.t;
2911 sizeh->win_gravity = xgeommasktogravity(xw.gm);
2912 }
2913
2914 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
2915 &class);
2916 XFree(sizeh);
2917 }
2918
2919 int
2920 xgeommasktogravity(int mask) {
2921 switch(mask & (XNegative|YNegative)) {
2922 case 0:
2923 return NorthWestGravity;
2924 case XNegative:
2925 return NorthEastGravity;
2926 case YNegative:
2927 return SouthWestGravity;
2928 }
2929 return SouthEastGravity;
2930 }
2931
2932 int
2933 xloadfont(Font *f, FcPattern *pattern) {
2934 FcPattern *match;
2935 FcResult result;
2936
2937 match = FcFontMatch(NULL, pattern, &result);
2938 if(!match)
2939 return 1;
2940
2941 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
2942 FcPatternDestroy(match);
2943 return 1;
2944 }
2945
2946 f->set = NULL;
2947 f->pattern = FcPatternDuplicate(pattern);
2948
2949 f->ascent = f->match->ascent;
2950 f->descent = f->match->descent;
2951 f->lbearing = 0;
2952 f->rbearing = f->match->max_advance_width;
2953
2954 f->height = f->ascent + f->descent;
2955 f->width = f->lbearing + f->rbearing;
2956
2957 return 0;
2958 }
2959
2960 void
2961 xloadfonts(char *fontstr, double fontsize) {
2962 FcPattern *pattern;
2963 FcResult r_sz, r_psz;
2964 double fontval;
2965 float ceilf(float);
2966
2967 if(fontstr[0] == '-') {
2968 pattern = XftXlfdParse(fontstr, False, False);
2969 } else {
2970 pattern = FcNameParse((FcChar8 *)fontstr);
2971 }
2972
2973 if(!pattern)
2974 die("st: can't open font %s\n", fontstr);
2975
2976 if(fontsize > 0) {
2977 FcPatternDel(pattern, FC_PIXEL_SIZE);
2978 FcPatternDel(pattern, FC_SIZE);
2979 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2980 usedfontsize = fontsize;
2981 } else {
2982 r_psz = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2983 r_sz = FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval);
2984 if(r_psz == FcResultMatch) {
2985 usedfontsize = fontval;
2986 } else if(r_sz == FcResultMatch) {
2987 usedfontsize = -1;
2988 } else {
2989 /*
2990 * Default font size is 12, if none given. This is to
2991 * have a known usedfontsize value.
2992 */
2993 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2994 usedfontsize = 12;
2995 }
2996 }
2997
2998 FcConfigSubstitute(0, pattern, FcMatchPattern);
2999 FcDefaultSubstitute(pattern);
3000
3001 if(xloadfont(&dc.font, pattern))
3002 die("st: can't open font %s\n", fontstr);
3003
3004 if(usedfontsize < 0) {
3005 FcPatternGetDouble(dc.font.match->pattern,
3006 FC_PIXEL_SIZE, 0, &fontval);
3007 usedfontsize = fontval;
3008 }
3009
3010 /* Setting character width and height. */
3011 xw.cw = ceilf(dc.font.width * cwscale);
3012 xw.ch = ceilf(dc.font.height * chscale);
3013
3014 FcPatternDel(pattern, FC_SLANT);
3015 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3016 if(xloadfont(&dc.ifont, pattern))
3017 die("st: can't open font %s\n", fontstr);
3018
3019 FcPatternDel(pattern, FC_WEIGHT);
3020 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3021 if(xloadfont(&dc.ibfont, pattern))
3022 die("st: can't open font %s\n", fontstr);
3023
3024 FcPatternDel(pattern, FC_SLANT);
3025 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3026 if(xloadfont(&dc.bfont, pattern))
3027 die("st: can't open font %s\n", fontstr);
3028
3029 FcPatternDestroy(pattern);
3030 }
3031
3032 int
3033 xloadfontset(Font *f) {
3034 FcResult result;
3035
3036 if(!(f->set = FcFontSort(0, f->pattern, FcTrue, 0, &result)))
3037 return 1;
3038 return 0;
3039 }
3040
3041 void
3042 xunloadfont(Font *f) {
3043 XftFontClose(xw.dpy, f->match);
3044 FcPatternDestroy(f->pattern);
3045 if(f->set)
3046 FcFontSetDestroy(f->set);
3047 }
3048
3049 void
3050 xunloadfonts(void) {
3051 /* Free the loaded fonts in the font cache. */
3052 while(frclen > 0)
3053 XftFontClose(xw.dpy, frc[--frclen].font);
3054
3055 xunloadfont(&dc.font);
3056 xunloadfont(&dc.bfont);
3057 xunloadfont(&dc.ifont);
3058 xunloadfont(&dc.ibfont);
3059 }
3060
3061 void
3062 xzoom(const Arg *arg) {
3063 xunloadfonts();
3064 xloadfonts(usedfont, usedfontsize + arg->i);
3065 cresize(0, 0);
3066 redraw(0);
3067 xhints();
3068 }
3069
3070 void
3071 xinit(void) {
3072 XGCValues gcvalues;
3073 Cursor cursor;
3074 Window parent;
3075 pid_t thispid = getpid();
3076
3077 if(!(xw.dpy = XOpenDisplay(NULL)))
3078 die("Can't open display\n");
3079 xw.scr = XDefaultScreen(xw.dpy);
3080 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3081
3082 /* font */
3083 if(!FcInit())
3084 die("Could not init fontconfig.\n");
3085
3086 usedfont = (opt_font == NULL)? font : opt_font;
3087 xloadfonts(usedfont, 0);
3088
3089 /* colors */
3090 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3091 xloadcols();
3092
3093 /* adjust fixed window geometry */
3094 xw.w = 2 * borderpx + term.col * xw.cw;
3095 xw.h = 2 * borderpx + term.row * xw.ch;
3096 if(xw.gm & XNegative)
3097 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3098 if(xw.gm & YNegative)
3099 xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
3100
3101 /* Events */
3102 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3103 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3104 xw.attrs.bit_gravity = NorthWestGravity;
3105 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3106 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3107 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3108 xw.attrs.colormap = xw.cmap;
3109
3110 parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
3111 XRootWindow(xw.dpy, xw.scr);
3112 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3113 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3114 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3115 | CWEventMask | CWColormap, &xw.attrs);
3116
3117 memset(&gcvalues, 0, sizeof(gcvalues));
3118 gcvalues.graphics_exposures = False;
3119 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3120 &gcvalues);
3121 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3122 DefaultDepth(xw.dpy, xw.scr));
3123 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3124 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3125
3126 /* Xft rendering context */
3127 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3128
3129 /* input methods */
3130 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3131 XSetLocaleModifiers("@im=local");
3132 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3133 XSetLocaleModifiers("@im=");
3134 if((xw.xim = XOpenIM(xw.dpy,
3135 NULL, NULL, NULL)) == NULL) {
3136 die("XOpenIM failed. Could not open input"
3137 " device.\n");
3138 }
3139 }
3140 }
3141 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3142 | XIMStatusNothing, XNClientWindow, xw.win,
3143 XNFocusWindow, xw.win, NULL);
3144 if(xw.xic == NULL)
3145 die("XCreateIC failed. Could not obtain input method.\n");
3146
3147 /* white cursor, black outline */
3148 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
3149 XDefineCursor(xw.dpy, xw.win, cursor);
3150 XRecolorCursor(xw.dpy, cursor,
3151 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
3152 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
3153
3154 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3155 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3156 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3157 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3158
3159 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3160 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3161 PropModeReplace, (uchar *)&thispid, 1);
3162
3163 xresettitle();
3164 XMapWindow(xw.dpy, xw.win);
3165 xhints();
3166 XSync(xw.dpy, False);
3167 }
3168
3169 void
3170 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
3171 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3172 width = charlen * xw.cw, xp, i;
3173 int frcflags;
3174 int u8fl, u8fblen, u8cblen, doesexist;
3175 char *u8c, *u8fs;
3176 long unicodep;
3177 Font *font = &dc.font;
3178 FcResult fcres;
3179 FcPattern *fcpattern, *fontpattern;
3180 FcFontSet *fcsets[] = { NULL };
3181 FcCharSet *fccharset;
3182 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3183 XRenderColor colfg, colbg;
3184 XRectangle r;
3185 int oneatatime;
3186
3187 frcflags = FRC_NORMAL;
3188
3189 if(base.mode & ATTR_ITALIC) {
3190 if(base.fg == defaultfg)
3191 base.fg = defaultitalic;
3192 font = &dc.ifont;
3193 frcflags = FRC_ITALIC;
3194 } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
3195 if(base.fg == defaultfg)
3196 base.fg = defaultitalic;
3197 font = &dc.ibfont;
3198 frcflags = FRC_ITALICBOLD;
3199 } else if(base.mode & ATTR_UNDERLINE) {
3200 if(base.fg == defaultfg)
3201 base.fg = defaultunderline;
3202 }
3203
3204 if(IS_TRUECOL(base.fg)) {
3205 colfg.alpha = 0xffff;
3206 colfg.red = TRUERED(base.fg);
3207 colfg.green = TRUEGREEN(base.fg);
3208 colfg.blue = TRUEBLUE(base.fg);
3209 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3210 fg = &truefg;
3211 } else {
3212 fg = &dc.col[base.fg];
3213 }
3214
3215 if(IS_TRUECOL(base.bg)) {
3216 colbg.alpha = 0xffff;
3217 colbg.green = TRUEGREEN(base.bg);
3218 colbg.red = TRUERED(base.bg);
3219 colbg.blue = TRUEBLUE(base.bg);
3220 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3221 bg = &truebg;
3222 } else {
3223 bg = &dc.col[base.bg];
3224 }
3225
3226 if(base.mode & ATTR_BOLD) {
3227 /*
3228 * change basic system colors [0-7]
3229 * to bright system colors [8-15]
3230 */
3231 if(BETWEEN(base.fg, 0, 7) && !(base.mode & ATTR_FAINT))
3232 fg = &dc.col[base.fg + 8];
3233
3234 if(base.mode & ATTR_ITALIC) {
3235 font = &dc.ibfont;
3236 frcflags = FRC_ITALICBOLD;
3237 } else {
3238 font = &dc.bfont;
3239 frcflags = FRC_BOLD;
3240 }
3241 }
3242
3243 if(IS_SET(MODE_REVERSE)) {
3244 if(fg == &dc.col[defaultfg]) {
3245 fg = &dc.col[defaultbg];
3246 } else {
3247 colfg.red = ~fg->color.red;
3248 colfg.green = ~fg->color.green;
3249 colfg.blue = ~fg->color.blue;
3250 colfg.alpha = fg->color.alpha;
3251 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3252 &revfg);
3253 fg = &revfg;
3254 }
3255
3256 if(bg == &dc.col[defaultbg]) {
3257 bg = &dc.col[defaultfg];
3258 } else {
3259 colbg.red = ~bg->color.red;
3260 colbg.green = ~bg->color.green;
3261 colbg.blue = ~bg->color.blue;
3262 colbg.alpha = bg->color.alpha;
3263 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3264 &revbg);
3265 bg = &revbg;
3266 }
3267 }
3268
3269 if(base.mode & ATTR_REVERSE) {
3270 temp = fg;
3271 fg = bg;
3272 bg = temp;
3273 }
3274
3275 if(base.mode & ATTR_FAINT && !(base.mode & ATTR_BOLD)) {
3276 colfg.red = fg->color.red / 2;
3277 colfg.green = fg->color.green / 2;
3278 colfg.blue = fg->color.blue / 2;
3279 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3280 fg = &revfg;
3281 }
3282
3283 if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3284 fg = bg;
3285
3286 if(base.mode & ATTR_INVISIBLE)
3287 fg = bg;
3288
3289 /* Intelligent cleaning up of the borders. */
3290 if(x == 0) {
3291 xclear(0, (y == 0)? 0 : winy, borderpx,
3292 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3293 }
3294 if(x + charlen >= term.col) {
3295 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3296 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3297 }
3298 if(y == 0)
3299 xclear(winx, 0, winx + width, borderpx);
3300 if(y == term.row-1)
3301 xclear(winx, winy + xw.ch, winx + width, xw.h);
3302
3303 /* Clean up the region we want to draw to. */
3304 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3305
3306 /* Set the clip region because Xft is sometimes dirty. */
3307 r.x = 0;
3308 r.y = 0;
3309 r.height = xw.ch;
3310 r.width = width;
3311 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3312
3313 for(xp = winx; bytelen > 0;) {
3314 /*
3315 * Search for the range in the to be printed string of glyphs
3316 * that are in the main font. Then print that range. If
3317 * some glyph is found that is not in the font, do the
3318 * fallback dance.
3319 */
3320 u8fs = s;
3321 u8fblen = 0;
3322 u8fl = 0;
3323 oneatatime = font->width != xw.cw;
3324 for(;;) {
3325 u8c = s;
3326 u8cblen = utf8decode(s, &unicodep, UTF_SIZ);
3327 s += u8cblen;
3328 bytelen -= u8cblen;
3329
3330 doesexist = XftCharExists(xw.dpy, font->match, unicodep);
3331 if(doesexist) {
3332 u8fl++;
3333 u8fblen += u8cblen;
3334 if(!oneatatime && bytelen > 0)
3335 continue;
3336 }
3337
3338 if(u8fl > 0) {
3339 XftDrawStringUtf8(xw.draw, fg,
3340 font->match, xp,
3341 winy + font->ascent,
3342 (FcChar8 *)u8fs,
3343 u8fblen);
3344 xp += xw.cw * u8fl;
3345 }
3346 break;
3347 }
3348 if(doesexist) {
3349 if(oneatatime)
3350 continue;
3351 break;
3352 }
3353
3354 /* Search the font cache. */
3355 for(i = 0; i < frclen; i++) {
3356 if(XftCharExists(xw.dpy, frc[i].font, unicodep)
3357 && frc[i].flags == frcflags) {
3358 break;
3359 }
3360 }
3361
3362 /* Nothing was found. */
3363 if(i >= frclen) {
3364 if(!font->set)
3365 xloadfontset(font);
3366 fcsets[0] = font->set;
3367
3368 /*
3369 * Nothing was found in the cache. Now use
3370 * some dozen of Fontconfig calls to get the
3371 * font for one single character.
3372 *
3373 * Xft and fontconfig are design failures.
3374 */
3375 fcpattern = FcPatternDuplicate(font->pattern);
3376 fccharset = FcCharSetCreate();
3377
3378 FcCharSetAddChar(fccharset, unicodep);
3379 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3380 fccharset);
3381 FcPatternAddBool(fcpattern, FC_SCALABLE,
3382 FcTrue);
3383
3384 FcConfigSubstitute(0, fcpattern,
3385 FcMatchPattern);
3386 FcDefaultSubstitute(fcpattern);
3387
3388 fontpattern = FcFontSetMatch(0, fcsets,
3389 FcTrue, fcpattern, &fcres);
3390
3391 /*
3392 * Overwrite or create the new cache entry.
3393 */
3394 if(frclen >= LEN(frc)) {
3395 frclen = LEN(frc) - 1;
3396 XftFontClose(xw.dpy, frc[frclen].font);
3397 }
3398
3399 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3400 fontpattern);
3401 frc[frclen].flags = frcflags;
3402
3403 i = frclen;
3404 frclen++;
3405
3406 FcPatternDestroy(fcpattern);
3407 FcCharSetDestroy(fccharset);
3408 }
3409
3410 XftDrawStringUtf8(xw.draw, fg, frc[i].font,
3411 xp, winy + frc[i].font->ascent,
3412 (FcChar8 *)u8c, u8cblen);
3413
3414 xp += xw.cw * wcwidth(unicodep);
3415 }
3416
3417 /*
3418 * This is how the loop above actually should be. Why does the
3419 * application have to care about font details?
3420 *
3421 * I have to repeat: Xft and Fontconfig are design failures.
3422 */
3423 /*
3424 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
3425 winy + font->ascent, (FcChar8 *)s, bytelen);
3426 */
3427
3428 if(base.mode & ATTR_UNDERLINE) {
3429 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
3430 width, 1);
3431 }
3432
3433 if(base.mode & ATTR_STRUCK) {
3434 XftDrawRect(xw.draw, fg, winx, winy + 2 * font->ascent / 3,
3435 width, 1);
3436 }
3437
3438 /* Reset clip to none. */
3439 XftDrawSetClip(xw.draw, 0);
3440 }
3441
3442 void
3443 xdrawcursor(void) {
3444 static int oldx = 0, oldy = 0;
3445 int sl, width, curx;
3446 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
3447
3448 LIMIT(oldx, 0, term.col-1);
3449 LIMIT(oldy, 0, term.row-1);
3450
3451 curx = term.c.x;
3452
3453 /* adjust position if in dummy */
3454 if(term.line[oldy][oldx].mode & ATTR_WDUMMY)
3455 oldx--;
3456 if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3457 curx--;
3458
3459 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
3460
3461 /* remove the old cursor */
3462 sl = utf8len(term.line[oldy][oldx].c);
3463 width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1;
3464 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
3465 oldy, width, sl);
3466
3467 if(IS_SET(MODE_HIDE))
3468 return;
3469
3470 /* draw the new one */
3471 if(xw.state & WIN_FOCUSED) {
3472 if(IS_SET(MODE_REVERSE)) {
3473 g.mode |= ATTR_REVERSE;
3474 g.fg = defaultcs;
3475 g.bg = defaultfg;
3476 }
3477
3478 sl = utf8len(g.c);
3479 width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
3480 ? 2 : 1;
3481 xdraws(g.c, g, term.c.x, term.c.y, width, sl);
3482 } else {
3483 XftDrawRect(xw.draw, &dc.col[defaultcs],
3484 borderpx + curx * xw.cw,
3485 borderpx + term.c.y * xw.ch,
3486 xw.cw - 1, 1);
3487 XftDrawRect(xw.draw, &dc.col[defaultcs],
3488 borderpx + curx * xw.cw,
3489 borderpx + term.c.y * xw.ch,
3490 1, xw.ch - 1);
3491 XftDrawRect(xw.draw, &dc.col[defaultcs],
3492 borderpx + (curx + 1) * xw.cw - 1,
3493 borderpx + term.c.y * xw.ch,
3494 1, xw.ch - 1);
3495 XftDrawRect(xw.draw, &dc.col[defaultcs],
3496 borderpx + curx * xw.cw,
3497 borderpx + (term.c.y + 1) * xw.ch - 1,
3498 xw.cw, 1);
3499 }
3500 oldx = curx, oldy = term.c.y;
3501 }
3502
3503
3504 void
3505 xsettitle(char *p) {
3506 XTextProperty prop;
3507
3508 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3509 &prop);
3510 XSetWMName(xw.dpy, xw.win, &prop);
3511 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3512 XFree(prop.value);
3513 }
3514
3515 void
3516 xresettitle(void) {
3517 xsettitle(opt_title ? opt_title : "st");
3518 }
3519
3520 void
3521 redraw(int timeout) {
3522 struct timespec tv = {0, timeout * 1000};
3523
3524 tfulldirt();
3525 draw();
3526
3527 if(timeout > 0) {
3528 nanosleep(&tv, NULL);
3529 XSync(xw.dpy, False); /* necessary for a good tput flash */
3530 }
3531 }
3532
3533 void
3534 draw(void) {
3535 drawregion(0, 0, term.col, term.row);
3536 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3537 xw.h, 0, 0);
3538 XSetForeground(xw.dpy, dc.gc,
3539 dc.col[IS_SET(MODE_REVERSE)?
3540 defaultfg : defaultbg].pixel);
3541 }
3542
3543 void
3544 drawregion(int x1, int y1, int x2, int y2) {
3545 int ic, ib, x, y, ox, sl;
3546 Glyph base, new;
3547 char buf[DRAW_BUF_SIZ];
3548 bool ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3549 long unicodep;
3550
3551 if(!(xw.state & WIN_VISIBLE))
3552 return;
3553
3554 for(y = y1; y < y2; y++) {
3555 if(!term.dirty[y])
3556 continue;
3557
3558 xtermclear(0, y, term.col, y);
3559 term.dirty[y] = 0;
3560 base = term.line[y][0];
3561 ic = ib = ox = 0;
3562 for(x = x1; x < x2; x++) {
3563 new = term.line[y][x];
3564 if(new.mode == ATTR_WDUMMY)
3565 continue;
3566 if(ena_sel && selected(x, y))
3567 new.mode ^= ATTR_REVERSE;
3568 if(ib > 0 && (ATTRCMP(base, new)
3569 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
3570 xdraws(buf, base, ox, y, ic, ib);
3571 ic = ib = 0;
3572 }
3573 if(ib == 0) {
3574 ox = x;
3575 base = new;
3576 }
3577
3578 sl = utf8decode(new.c, &unicodep, UTF_SIZ);
3579 memcpy(buf+ib, new.c, sl);
3580 ib += sl;
3581 ic += (new.mode & ATTR_WIDE)? 2 : 1;
3582 }
3583 if(ib > 0)
3584 xdraws(buf, base, ox, y, ic, ib);
3585 }
3586 xdrawcursor();
3587 }
3588
3589 void
3590 expose(XEvent *ev) {
3591 XExposeEvent *e = &ev->xexpose;
3592
3593 if(xw.state & WIN_REDRAW) {
3594 if(!e->count)
3595 xw.state &= ~WIN_REDRAW;
3596 }
3597 redraw(0);
3598 }
3599
3600 void
3601 visibility(XEvent *ev) {
3602 XVisibilityEvent *e = &ev->xvisibility;
3603
3604 if(e->state == VisibilityFullyObscured) {
3605 xw.state &= ~WIN_VISIBLE;
3606 } else if(!(xw.state & WIN_VISIBLE)) {
3607 /* need a full redraw for next Expose, not just a buf copy */
3608 xw.state |= WIN_VISIBLE | WIN_REDRAW;
3609 }
3610 }
3611
3612 void
3613 unmap(XEvent *ev) {
3614 xw.state &= ~WIN_VISIBLE;
3615 }
3616
3617 void
3618 xsetpointermotion(int set) {
3619 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
3620 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
3621 }
3622
3623 void
3624 xseturgency(int add) {
3625 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3626
3627 MODBIT(h->flags, add, XUrgencyHint);
3628 XSetWMHints(xw.dpy, xw.win, h);
3629 XFree(h);
3630 }
3631
3632 void
3633 focus(XEvent *ev) {
3634 XFocusChangeEvent *e = &ev->xfocus;
3635
3636 if(e->mode == NotifyGrab)
3637 return;
3638
3639 if(ev->type == FocusIn) {
3640 XSetICFocus(xw.xic);
3641 xw.state |= WIN_FOCUSED;
3642 xseturgency(0);
3643 if(IS_SET(MODE_FOCUS))
3644 ttywrite("\033[I", 3);
3645 } else {
3646 XUnsetICFocus(xw.xic);
3647 xw.state &= ~WIN_FOCUSED;
3648 if(IS_SET(MODE_FOCUS))
3649 ttywrite("\033[O", 3);
3650 }
3651 }
3652
3653 static inline bool
3654 match(uint mask, uint state) {
3655 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
3656 }
3657
3658 void
3659 numlock(const Arg *dummy) {
3660 term.numlock ^= 1;
3661 }
3662
3663 char*
3664 kmap(KeySym k, uint state) {
3665 Key *kp;
3666 int i;
3667
3668 /* Check for mapped keys out of X11 function keys. */
3669 for(i = 0; i < LEN(mappedkeys); i++) {
3670 if(mappedkeys[i] == k)
3671 break;
3672 }
3673 if(i == LEN(mappedkeys)) {
3674 if((k & 0xFFFF) < 0xFD00)
3675 return NULL;
3676 }
3677
3678 for(kp = key; kp < key + LEN(key); kp++) {
3679 if(kp->k != k)
3680 continue;
3681
3682 if(!match(kp->mask, state))
3683 continue;
3684
3685 if(IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
3686 continue;
3687 if(term.numlock && kp->appkey == 2)
3688 continue;
3689
3690 if(IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
3691 continue;
3692
3693 if(IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
3694 continue;
3695
3696 return kp->s;
3697 }
3698
3699 return NULL;
3700 }
3701
3702 void
3703 kpress(XEvent *ev) {
3704 XKeyEvent *e = &ev->xkey;
3705 KeySym ksym;
3706 char buf[32], *customkey;
3707 int len;
3708 long c;
3709 Status status;
3710 Shortcut *bp;
3711
3712 if(IS_SET(MODE_KBDLOCK))
3713 return;
3714
3715 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
3716 /* 1. shortcuts */
3717 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3718 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3719 bp->func(&(bp->arg));
3720 return;
3721 }
3722 }
3723
3724 /* 2. custom keys from config.h */
3725 if((customkey = kmap(ksym, e->state))) {
3726 ttysend(customkey, strlen(customkey));
3727 return;
3728 }
3729
3730 /* 3. composed string from input method */
3731 if(len == 0)
3732 return;
3733 if(len == 1 && e->state & Mod1Mask) {
3734 if(IS_SET(MODE_8BIT)) {
3735 if(*buf < 0177) {
3736 c = *buf | 0x80;
3737 len = utf8encode(c, buf, UTF_SIZ);
3738 }
3739 } else {
3740 buf[1] = buf[0];
3741 buf[0] = '\033';
3742 len = 2;
3743 }
3744 }
3745 ttysend(buf, len);
3746 }
3747
3748
3749 void
3750 cmessage(XEvent *e) {
3751 /*
3752 * See xembed specs
3753 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3754 */
3755 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3756 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3757 xw.state |= WIN_FOCUSED;
3758 xseturgency(0);
3759 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3760 xw.state &= ~WIN_FOCUSED;
3761 }
3762 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3763 /* Send SIGHUP to shell */
3764 kill(pid, SIGHUP);
3765 exit(EXIT_SUCCESS);
3766 }
3767 }
3768
3769 void
3770 cresize(int width, int height) {
3771 int col, row;
3772
3773 if(width != 0)
3774 xw.w = width;
3775 if(height != 0)
3776 xw.h = height;
3777
3778 col = (xw.w - 2 * borderpx) / xw.cw;
3779 row = (xw.h - 2 * borderpx) / xw.ch;
3780
3781 tresize(col, row);
3782 xresize(col, row);
3783 ttyresize();
3784 }
3785
3786 void
3787 resize(XEvent *e) {
3788 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3789 return;
3790
3791 cresize(e->xconfigure.width, e->xconfigure.height);
3792 }
3793
3794 void
3795 run(void) {
3796 XEvent ev;
3797 int w = xw.w, h = xw.h;
3798 fd_set rfd;
3799 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
3800 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
3801 long deltatime;
3802
3803 /* Waiting for window mapping */
3804 while(1) {
3805 XNextEvent(xw.dpy, &ev);
3806 if(XFilterEvent(&ev, None))
3807 continue;
3808 if(ev.type == ConfigureNotify) {
3809 w = ev.xconfigure.width;
3810 h = ev.xconfigure.height;
3811 } else if(ev.type == MapNotify) {
3812 break;
3813 }
3814 }
3815
3816 ttynew();
3817 cresize(w, h);
3818
3819 clock_gettime(CLOCK_MONOTONIC, &last);
3820 lastblink = last;
3821
3822 for(xev = actionfps;;) {
3823 FD_ZERO(&rfd);
3824 FD_SET(cmdfd, &rfd);
3825 FD_SET(xfd, &rfd);
3826
3827 if(pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
3828 if(errno == EINTR)
3829 continue;
3830 die("select failed: %s\n", strerror(errno));
3831 }
3832 if(FD_ISSET(cmdfd, &rfd)) {
3833 ttyread();
3834 if(blinktimeout) {
3835 blinkset = tattrset(ATTR_BLINK);
3836 if(!blinkset)
3837 MODBIT(term.mode, 0, MODE_BLINK);
3838 }
3839 }
3840
3841 if(FD_ISSET(xfd, &rfd))
3842 xev = actionfps;
3843
3844 clock_gettime(CLOCK_MONOTONIC, &now);
3845 drawtimeout.tv_sec = 0;
3846 drawtimeout.tv_nsec = (1000/xfps) * 1E6;
3847 tv = &drawtimeout;
3848
3849 dodraw = 0;
3850 if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
3851 tsetdirtattr(ATTR_BLINK);
3852 term.mode ^= MODE_BLINK;
3853 lastblink = now;
3854 dodraw = 1;
3855 }
3856 deltatime = TIMEDIFF(now, last);
3857 if(deltatime > (xev? (1000/xfps) : (1000/actionfps))
3858 || deltatime < 0) {
3859 dodraw = 1;
3860 last = now;
3861 }
3862
3863 if(dodraw) {
3864 while(XPending(xw.dpy)) {
3865 XNextEvent(xw.dpy, &ev);
3866 if(XFilterEvent(&ev, None))
3867 continue;
3868 if(handler[ev.type])
3869 (handler[ev.type])(&ev);
3870 }
3871
3872 draw();
3873 XFlush(xw.dpy);
3874
3875 if(xev && !FD_ISSET(xfd, &rfd))
3876 xev--;
3877 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
3878 if(blinkset) {
3879 if(TIMEDIFF(now, lastblink) \
3880 > blinktimeout) {
3881 drawtimeout.tv_nsec = 1000;
3882 } else {
3883 drawtimeout.tv_nsec = (1E6 * \
3884 (blinktimeout - \
3885 TIMEDIFF(now,
3886 lastblink)));
3887 }
3888 } else {
3889 tv = NULL;
3890 }
3891 }
3892 }
3893 }
3894 }
3895
3896 void
3897 usage(void) {
3898 die("%s " VERSION " (c) 2010-2014 st engineers\n" \
3899 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
3900 " [-i] [-t title] [-w windowid] [-e command ...]\n", argv0);
3901 }
3902
3903 int
3904 main(int argc, char *argv[]) {
3905 char *titles;
3906 uint cols = 80, rows = 24;
3907
3908 xw.l = xw.t = 0;
3909 xw.isfixed = False;
3910
3911 ARGBEGIN {
3912 case 'a':
3913 allowaltscreen = false;
3914 break;
3915 case 'c':
3916 opt_class = EARGF(usage());
3917 break;
3918 case 'e':
3919 /* eat all remaining arguments */
3920 if(argc > 1) {
3921 opt_cmd = &argv[1];
3922 if(argv[1] != NULL && opt_title == NULL) {
3923 titles = xstrdup(argv[1]);
3924 opt_title = basename(titles);
3925 }
3926 }
3927 goto run;
3928 case 'f':
3929 opt_font = EARGF(usage());
3930 break;
3931 case 'g':
3932 xw.gm = XParseGeometry(EARGF(usage()),
3933 &xw.l, &xw.t, &cols, &rows);
3934 break;
3935 case 'i':
3936 xw.isfixed = True;
3937 break;
3938 case 'o':
3939 opt_io = EARGF(usage());
3940 break;
3941 case 't':
3942 opt_title = EARGF(usage());
3943 break;
3944 case 'w':
3945 opt_embed = EARGF(usage());
3946 break;
3947 case 'v':
3948 default:
3949 usage();
3950 } ARGEND;
3951
3952 run:
3953 setlocale(LC_CTYPE, "");
3954 XSetLocaleModifiers("");
3955 tnew(cols? cols : 1, rows? rows : 1);
3956 xinit();
3957 selinit();
3958 run();
3959
3960 return 0;
3961 }
3962