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