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Implement INCR transfers in the clipboard.
[st.git] / st.c
1 /* See LICENSE for license 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 <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <signal.h>
13 #include <stdint.h>
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
16 #include <sys/stat.h>
17 #include <sys/time.h>
18 #include <sys/types.h>
19 #include <sys/wait.h>
20 #include <time.h>
21 #include <unistd.h>
22 #include <libgen.h>
23 #include <X11/Xatom.h>
24 #include <X11/Xlib.h>
25 #include <X11/Xutil.h>
26 #include <X11/cursorfont.h>
27 #include <X11/keysym.h>
28 #include <X11/Xft/Xft.h>
29 #include <X11/XKBlib.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 XK_ANY_MOD UINT_MAX
61 #define XK_NO_MOD 0
62 #define XK_SWITCH_MOD (1<<13)
63
64 /* macros */
65 #define MIN(a, b) ((a) < (b) ? (a) : (b))
66 #define MAX(a, b) ((a) < (b) ? (b) : (a))
67 #define LEN(a) (sizeof(a) / sizeof(a)[0])
68 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
69 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
70 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
71 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
72 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
73 #define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL)
74 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
75 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
76 #define IS_SET(flag) ((term.mode & (flag)) != 0)
77 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_nsec-t2.tv_nsec)/1E6)
78 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
79
80 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
81 #define IS_TRUECOL(x) (1 << 24 & (x))
82 #define TRUERED(x) (((x) & 0xff0000) >> 8)
83 #define TRUEGREEN(x) (((x) & 0xff00))
84 #define TRUEBLUE(x) (((x) & 0xff) << 8)
85
86
87 enum glyph_attribute {
88 ATTR_NULL = 0,
89 ATTR_BOLD = 1 << 0,
90 ATTR_FAINT = 1 << 1,
91 ATTR_ITALIC = 1 << 2,
92 ATTR_UNDERLINE = 1 << 3,
93 ATTR_BLINK = 1 << 4,
94 ATTR_REVERSE = 1 << 5,
95 ATTR_INVISIBLE = 1 << 6,
96 ATTR_STRUCK = 1 << 7,
97 ATTR_WRAP = 1 << 8,
98 ATTR_WIDE = 1 << 9,
99 ATTR_WDUMMY = 1 << 10,
100 ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
101 };
102
103 enum cursor_movement {
104 CURSOR_SAVE,
105 CURSOR_LOAD
106 };
107
108 enum cursor_state {
109 CURSOR_DEFAULT = 0,
110 CURSOR_WRAPNEXT = 1,
111 CURSOR_ORIGIN = 2
112 };
113
114 enum term_mode {
115 MODE_WRAP = 1 << 0,
116 MODE_INSERT = 1 << 1,
117 MODE_APPKEYPAD = 1 << 2,
118 MODE_ALTSCREEN = 1 << 3,
119 MODE_CRLF = 1 << 4,
120 MODE_MOUSEBTN = 1 << 5,
121 MODE_MOUSEMOTION = 1 << 6,
122 MODE_REVERSE = 1 << 7,
123 MODE_KBDLOCK = 1 << 8,
124 MODE_HIDE = 1 << 9,
125 MODE_ECHO = 1 << 10,
126 MODE_APPCURSOR = 1 << 11,
127 MODE_MOUSESGR = 1 << 12,
128 MODE_8BIT = 1 << 13,
129 MODE_BLINK = 1 << 14,
130 MODE_FBLINK = 1 << 15,
131 MODE_FOCUS = 1 << 16,
132 MODE_MOUSEX10 = 1 << 17,
133 MODE_MOUSEMANY = 1 << 18,
134 MODE_BRCKTPASTE = 1 << 19,
135 MODE_PRINT = 1 << 20,
136 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
137 |MODE_MOUSEMANY,
138 };
139
140 enum charset {
141 CS_GRAPHIC0,
142 CS_GRAPHIC1,
143 CS_UK,
144 CS_USA,
145 CS_MULTI,
146 CS_GER,
147 CS_FIN
148 };
149
150 enum escape_state {
151 ESC_START = 1,
152 ESC_CSI = 2,
153 ESC_STR = 4, /* DCS, OSC, PM, APC */
154 ESC_ALTCHARSET = 8,
155 ESC_STR_END = 16, /* a final string was encountered */
156 ESC_TEST = 32, /* Enter in test mode */
157 };
158
159 enum window_state {
160 WIN_VISIBLE = 1,
161 WIN_FOCUSED = 2
162 };
163
164 enum selection_mode {
165 SEL_IDLE = 0,
166 SEL_EMPTY = 1,
167 SEL_READY = 2
168 };
169
170 enum selection_type {
171 SEL_REGULAR = 1,
172 SEL_RECTANGULAR = 2
173 };
174
175 enum selection_snap {
176 SNAP_WORD = 1,
177 SNAP_LINE = 2
178 };
179
180 typedef unsigned char uchar;
181 typedef unsigned int uint;
182 typedef unsigned long ulong;
183 typedef unsigned short ushort;
184
185 typedef uint_least32_t Rune;
186
187 typedef XftDraw *Draw;
188 typedef XftColor Color;
189
190 typedef struct {
191 Rune u; /* character code */
192 ushort mode; /* attribute flags */
193 uint32_t fg; /* foreground */
194 uint32_t bg; /* background */
195 } Glyph;
196
197 typedef Glyph *Line;
198
199 typedef struct {
200 Glyph attr; /* current char attributes */
201 int x;
202 int y;
203 char state;
204 } TCursor;
205
206 /* CSI Escape sequence structs */
207 /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
208 typedef struct {
209 char buf[ESC_BUF_SIZ]; /* raw string */
210 int len; /* raw string length */
211 char priv;
212 int arg[ESC_ARG_SIZ];
213 int narg; /* nb of args */
214 char mode[2];
215 } CSIEscape;
216
217 /* STR Escape sequence structs */
218 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
219 typedef struct {
220 char type; /* ESC type ... */
221 char buf[STR_BUF_SIZ]; /* raw string */
222 int len; /* raw string length */
223 char *args[STR_ARG_SIZ];
224 int narg; /* nb of args */
225 } STREscape;
226
227 /* Internal representation of the screen */
228 typedef struct {
229 int row; /* nb row */
230 int col; /* nb col */
231 Line *line; /* screen */
232 Line *alt; /* alternate screen */
233 int *dirty; /* dirtyness of lines */
234 XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
235 TCursor c; /* cursor */
236 int top; /* top scroll limit */
237 int bot; /* bottom scroll limit */
238 int mode; /* terminal mode flags */
239 int esc; /* escape state flags */
240 char trantbl[4]; /* charset table translation */
241 int charset; /* current charset */
242 int icharset; /* selected charset for sequence */
243 int numlock; /* lock numbers in keyboard */
244 int *tabs;
245 } Term;
246
247 /* Purely graphic info */
248 typedef struct {
249 Display *dpy;
250 Colormap cmap;
251 Window win;
252 Drawable buf;
253 Atom xembed, wmdeletewin, netwmname, netwmpid;
254 XIM xim;
255 XIC xic;
256 Draw draw;
257 Visual *vis;
258 XSetWindowAttributes attrs;
259 int scr;
260 int isfixed; /* is fixed geometry? */
261 int l, t; /* left and top offset */
262 int gm; /* geometry mask */
263 int tw, th; /* tty width and height */
264 int w, h; /* window width and height */
265 int ch; /* char height */
266 int cw; /* char width */
267 char state; /* focus, redraw, visible */
268 int cursor; /* cursor style */
269 } XWindow;
270
271 typedef struct {
272 uint b;
273 uint mask;
274 char *s;
275 } Mousekey;
276
277 typedef struct {
278 KeySym k;
279 uint mask;
280 char *s;
281 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
282 signed char appkey; /* application keypad */
283 signed char appcursor; /* application cursor */
284 signed char crlf; /* crlf mode */
285 } Key;
286
287 typedef struct {
288 int mode;
289 int type;
290 int snap;
291 /*
292 * Selection variables:
293 * nb – normalized coordinates of the beginning of the selection
294 * ne – normalized coordinates of the end of the selection
295 * ob – original coordinates of the beginning of the selection
296 * oe – original coordinates of the end of the selection
297 */
298 struct {
299 int x, y;
300 } nb, ne, ob, oe;
301
302 char *primary, *clipboard;
303 Atom xtarget;
304 int alt;
305 struct timespec tclick1;
306 struct timespec tclick2;
307 } Selection;
308
309 typedef union {
310 int i;
311 uint ui;
312 float f;
313 const void *v;
314 } Arg;
315
316 typedef struct {
317 uint mod;
318 KeySym keysym;
319 void (*func)(const Arg *);
320 const Arg arg;
321 } Shortcut;
322
323 /* function definitions used in config.h */
324 static void clipcopy(const Arg *);
325 static void clippaste(const Arg *);
326 static void numlock(const Arg *);
327 static void selpaste(const Arg *);
328 static void xzoom(const Arg *);
329 static void xzoomabs(const Arg *);
330 static void xzoomreset(const Arg *);
331 static void printsel(const Arg *);
332 static void printscreen(const Arg *) ;
333 static void toggleprinter(const Arg *);
334
335 /* Config.h for applying patches and the configuration. */
336 #include "config.h"
337
338 /* Font structure */
339 typedef struct {
340 int height;
341 int width;
342 int ascent;
343 int descent;
344 short lbearing;
345 short rbearing;
346 XftFont *match;
347 FcFontSet *set;
348 FcPattern *pattern;
349 } Font;
350
351 /* Drawing Context */
352 typedef struct {
353 Color col[MAX(LEN(colorname), 256)];
354 Font font, bfont, ifont, ibfont;
355 GC gc;
356 } DC;
357
358 static void die(const char *, ...);
359 static void draw(void);
360 static void redraw(void);
361 static void drawregion(int, int, int, int);
362 static void execsh(void);
363 static void stty(void);
364 static void sigchld(int);
365 static void run(void);
366
367 static void csidump(void);
368 static void csihandle(void);
369 static void csiparse(void);
370 static void csireset(void);
371 static int eschandle(uchar);
372 static void strdump(void);
373 static void strhandle(void);
374 static void strparse(void);
375 static void strreset(void);
376
377 static int tattrset(int);
378 static void tprinter(char *, size_t);
379 static void tdumpsel(void);
380 static void tdumpline(int);
381 static void tdump(void);
382 static void tclearregion(int, int, int, int);
383 static void tcursor(int);
384 static void tdeletechar(int);
385 static void tdeleteline(int);
386 static void tinsertblank(int);
387 static void tinsertblankline(int);
388 static int tlinelen(int);
389 static void tmoveto(int, int);
390 static void tmoveato(int, int);
391 static void tnew(int, int);
392 static void tnewline(int);
393 static void tputtab(int);
394 static void tputc(Rune);
395 static void treset(void);
396 static void tresize(int, int);
397 static void tscrollup(int, int);
398 static void tscrolldown(int, int);
399 static void tsetattr(int *, int);
400 static void tsetchar(Rune, Glyph *, int, int);
401 static void tsetscroll(int, int);
402 static void tswapscreen(void);
403 static void tsetdirt(int, int);
404 static void tsetdirtattr(int);
405 static void tsetmode(int, int, int *, int);
406 static void tfulldirt(void);
407 static void techo(Rune);
408 static void tcontrolcode(uchar );
409 static void tdectest(char );
410 static int32_t tdefcolor(int *, int *, int);
411 static void tdeftran(char);
412 static inline int match(uint, uint);
413 static void ttynew(void);
414 static void ttyread(void);
415 static void ttyresize(void);
416 static void ttysend(char *, size_t);
417 static void ttywrite(const char *, size_t);
418 static void tstrsequence(uchar);
419
420 static inline ushort sixd_to_16bit(int);
421 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
422 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
423 static void xdrawglyph(Glyph, int, int);
424 static void xhints(void);
425 static void xclear(int, int, int, int);
426 static void xdrawcursor(void);
427 static void xinit(void);
428 static void xloadcols(void);
429 static int xsetcolorname(int, const char *);
430 static int xgeommasktogravity(int);
431 static int xloadfont(Font *, FcPattern *);
432 static void xloadfonts(char *, double);
433 static void xsettitle(char *);
434 static void xresettitle(void);
435 static void xsetpointermotion(int);
436 static void xseturgency(int);
437 static void xsetsel(char *, Time);
438 static void xtermclear(int, int, int, int);
439 static void xunloadfont(Font *);
440 static void xunloadfonts(void);
441 static void xresize(int, int);
442
443 static void expose(XEvent *);
444 static void visibility(XEvent *);
445 static void unmap(XEvent *);
446 static char *kmap(KeySym, uint);
447 static void kpress(XEvent *);
448 static void cmessage(XEvent *);
449 static void cresize(int, int);
450 static void resize(XEvent *);
451 static void focus(XEvent *);
452 static void brelease(XEvent *);
453 static void bpress(XEvent *);
454 static void bmotion(XEvent *);
455 static void propnotify(XEvent *);
456 static void selnotify(XEvent *);
457 static void selclear(XEvent *);
458 static void selrequest(XEvent *);
459
460 static void selinit(void);
461 static void selnormalize(void);
462 static inline int selected(int, int);
463 static char *getsel(void);
464 static void selcopy(Time);
465 static void selscroll(int, int);
466 static void selsnap(int *, int *, int);
467 static int x2col(int);
468 static int y2row(int);
469 static void getbuttoninfo(XEvent *);
470 static void mousereport(XEvent *);
471
472 static size_t utf8decode(char *, Rune *, size_t);
473 static Rune utf8decodebyte(char, size_t *);
474 static size_t utf8encode(Rune, char *);
475 static char utf8encodebyte(Rune, size_t);
476 static char *utf8strchr(char *s, Rune u);
477 static size_t utf8validate(Rune *, size_t);
478
479 static ssize_t xwrite(int, const char *, size_t);
480 static void *xmalloc(size_t);
481 static void *xrealloc(void *, size_t);
482 static char *xstrdup(char *);
483
484 static void usage(void);
485
486 static void (*handler[LASTEvent])(XEvent *) = {
487 [KeyPress] = kpress,
488 [ClientMessage] = cmessage,
489 [ConfigureNotify] = resize,
490 [VisibilityNotify] = visibility,
491 [UnmapNotify] = unmap,
492 [Expose] = expose,
493 [FocusIn] = focus,
494 [FocusOut] = focus,
495 [MotionNotify] = bmotion,
496 [ButtonPress] = bpress,
497 [ButtonRelease] = brelease,
498 /*
499 * Uncomment if you want the selection to disappear when you select something
500 * different in another window.
501 */
502 /* [SelectionClear] = selclear, */
503 [SelectionNotify] = selnotify,
504 /*
505 * PropertyNotify is only turned on when there is some INCR transfer happening
506 * for the selection retrieval.
507 */
508 [PropertyNotify] = propnotify,
509 [SelectionRequest] = selrequest,
510 };
511
512 /* Globals */
513 static DC dc;
514 static XWindow xw;
515 static Term term;
516 static CSIEscape csiescseq;
517 static STREscape strescseq;
518 static int cmdfd;
519 static pid_t pid;
520 static Selection sel;
521 static int iofd = 1;
522 static char **opt_cmd = NULL;
523 static char *opt_io = NULL;
524 static char *opt_title = NULL;
525 static char *opt_embed = NULL;
526 static char *opt_class = NULL;
527 static char *opt_font = NULL;
528 static char *opt_line = NULL;
529 static int oldbutton = 3; /* button event on startup: 3 = release */
530
531 static char *usedfont = NULL;
532 static double usedfontsize = 0;
533 static double defaultfontsize = 0;
534
535 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
536 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
537 static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
538 static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
539
540 /* Font Ring Cache */
541 enum {
542 FRC_NORMAL,
543 FRC_ITALIC,
544 FRC_BOLD,
545 FRC_ITALICBOLD
546 };
547
548 typedef struct {
549 XftFont *font;
550 int flags;
551 Rune unicodep;
552 } Fontcache;
553
554 /* Fontcache is an array now. A new font will be appended to the array. */
555 static Fontcache frc[16];
556 static int frclen = 0;
557
558 ssize_t
559 xwrite(int fd, const char *s, size_t len)
560 {
561 size_t aux = len;
562
563 while (len > 0) {
564 ssize_t r = write(fd, s, len);
565 if (r < 0)
566 return r;
567 len -= r;
568 s += r;
569 }
570 return aux;
571 }
572
573 void *
574 xmalloc(size_t len)
575 {
576 void *p = malloc(len);
577
578 if (!p)
579 die("Out of memory\n");
580
581 return p;
582 }
583
584 void *
585 xrealloc(void *p, size_t len)
586 {
587 if ((p = realloc(p, len)) == NULL)
588 die("Out of memory\n");
589
590 return p;
591 }
592
593 char *
594 xstrdup(char *s)
595 {
596 if ((s = strdup(s)) == NULL)
597 die("Out of memory\n");
598
599 return s;
600 }
601
602 size_t
603 utf8decode(char *c, Rune *u, size_t clen)
604 {
605 size_t i, j, len, type;
606 Rune udecoded;
607
608 *u = UTF_INVALID;
609 if (!clen)
610 return 0;
611 udecoded = utf8decodebyte(c[0], &len);
612 if (!BETWEEN(len, 1, UTF_SIZ))
613 return 1;
614 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
615 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
616 if (type != 0)
617 return j;
618 }
619 if (j < len)
620 return 0;
621 *u = udecoded;
622 utf8validate(u, len);
623 return len;
624 }
625
626 Rune
627 utf8decodebyte(char c, size_t *i)
628 {
629 for (*i = 0; *i < LEN(utfmask); ++(*i))
630 if (((uchar)c & utfmask[*i]) == utfbyte[*i])
631 return (uchar)c & ~utfmask[*i];
632 return 0;
633 }
634
635 size_t
636 utf8encode(Rune u, char *c)
637 {
638 size_t len, i;
639
640 len = utf8validate(&u, 0);
641 if (len > UTF_SIZ)
642 return 0;
643 for (i = len - 1; i != 0; --i) {
644 c[i] = utf8encodebyte(u, 0);
645 u >>= 6;
646 }
647 c[0] = utf8encodebyte(u, len);
648 return len;
649 }
650
651 char
652 utf8encodebyte(Rune u, size_t i)
653 {
654 return utfbyte[i] | (u & ~utfmask[i]);
655 }
656
657 char *
658 utf8strchr(char *s, Rune u)
659 {
660 Rune r;
661 size_t i, j, len;
662
663 len = strlen(s);
664 for (i = 0, j = 0; i < len; i += j) {
665 if (!(j = utf8decode(&s[i], &r, len - i)))
666 break;
667 if (r == u)
668 return &(s[i]);
669 }
670 return NULL;
671 }
672
673 size_t
674 utf8validate(Rune *u, size_t i)
675 {
676 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
677 *u = UTF_INVALID;
678 for (i = 1; *u > utfmax[i]; ++i)
679 ;
680 return i;
681 }
682
683 void
684 selinit(void)
685 {
686 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
687 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
688 sel.mode = SEL_IDLE;
689 sel.ob.x = -1;
690 sel.primary = NULL;
691 sel.clipboard = NULL;
692 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
693 if (sel.xtarget == None)
694 sel.xtarget = XA_STRING;
695 }
696
697 int
698 x2col(int x)
699 {
700 x -= borderpx;
701 x /= xw.cw;
702
703 return LIMIT(x, 0, term.col-1);
704 }
705
706 int
707 y2row(int y)
708 {
709 y -= borderpx;
710 y /= xw.ch;
711
712 return LIMIT(y, 0, term.row-1);
713 }
714
715 int
716 tlinelen(int y)
717 {
718 int i = term.col;
719
720 if (term.line[y][i - 1].mode & ATTR_WRAP)
721 return i;
722
723 while (i > 0 && term.line[y][i - 1].u == ' ')
724 --i;
725
726 return i;
727 }
728
729 void
730 selnormalize(void)
731 {
732 int i;
733
734 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
735 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
736 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
737 } else {
738 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
739 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
740 }
741 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
742 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
743
744 selsnap(&sel.nb.x, &sel.nb.y, -1);
745 selsnap(&sel.ne.x, &sel.ne.y, +1);
746
747 /* expand selection over line breaks */
748 if (sel.type == SEL_RECTANGULAR)
749 return;
750 i = tlinelen(sel.nb.y);
751 if (i < sel.nb.x)
752 sel.nb.x = i;
753 if (tlinelen(sel.ne.y) <= sel.ne.x)
754 sel.ne.x = term.col - 1;
755 }
756
757 int
758 selected(int x, int y)
759 {
760 if (sel.mode == SEL_EMPTY)
761 return 0;
762
763 if (sel.type == SEL_RECTANGULAR)
764 return BETWEEN(y, sel.nb.y, sel.ne.y)
765 && BETWEEN(x, sel.nb.x, sel.ne.x);
766
767 return BETWEEN(y, sel.nb.y, sel.ne.y)
768 && (y != sel.nb.y || x >= sel.nb.x)
769 && (y != sel.ne.y || x <= sel.ne.x);
770 }
771
772 void
773 selsnap(int *x, int *y, int direction)
774 {
775 int newx, newy, xt, yt;
776 int delim, prevdelim;
777 Glyph *gp, *prevgp;
778
779 switch (sel.snap) {
780 case SNAP_WORD:
781 /*
782 * Snap around if the word wraps around at the end or
783 * beginning of a line.
784 */
785 prevgp = &term.line[*y][*x];
786 prevdelim = ISDELIM(prevgp->u);
787 for (;;) {
788 newx = *x + direction;
789 newy = *y;
790 if (!BETWEEN(newx, 0, term.col - 1)) {
791 newy += direction;
792 newx = (newx + term.col) % term.col;
793 if (!BETWEEN(newy, 0, term.row - 1))
794 break;
795
796 if (direction > 0)
797 yt = *y, xt = *x;
798 else
799 yt = newy, xt = newx;
800 if (!(term.line[yt][xt].mode & ATTR_WRAP))
801 break;
802 }
803
804 if (newx >= tlinelen(newy))
805 break;
806
807 gp = &term.line[newy][newx];
808 delim = ISDELIM(gp->u);
809 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
810 || (delim && gp->u != prevgp->u)))
811 break;
812
813 *x = newx;
814 *y = newy;
815 prevgp = gp;
816 prevdelim = delim;
817 }
818 break;
819 case SNAP_LINE:
820 /*
821 * Snap around if the the previous line or the current one
822 * has set ATTR_WRAP at its end. Then the whole next or
823 * previous line will be selected.
824 */
825 *x = (direction < 0) ? 0 : term.col - 1;
826 if (direction < 0) {
827 for (; *y > 0; *y += direction) {
828 if (!(term.line[*y-1][term.col-1].mode
829 & ATTR_WRAP)) {
830 break;
831 }
832 }
833 } else if (direction > 0) {
834 for (; *y < term.row-1; *y += direction) {
835 if (!(term.line[*y][term.col-1].mode
836 & ATTR_WRAP)) {
837 break;
838 }
839 }
840 }
841 break;
842 }
843 }
844
845 void
846 getbuttoninfo(XEvent *e)
847 {
848 int type;
849 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
850
851 sel.alt = IS_SET(MODE_ALTSCREEN);
852
853 sel.oe.x = x2col(e->xbutton.x);
854 sel.oe.y = y2row(e->xbutton.y);
855 selnormalize();
856
857 sel.type = SEL_REGULAR;
858 for (type = 1; type < LEN(selmasks); ++type) {
859 if (match(selmasks[type], state)) {
860 sel.type = type;
861 break;
862 }
863 }
864 }
865
866 void
867 mousereport(XEvent *e)
868 {
869 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
870 button = e->xbutton.button, state = e->xbutton.state,
871 len;
872 char buf[40];
873 static int ox, oy;
874
875 /* from urxvt */
876 if (e->xbutton.type == MotionNotify) {
877 if (x == ox && y == oy)
878 return;
879 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
880 return;
881 /* MOUSE_MOTION: no reporting if no button is pressed */
882 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
883 return;
884
885 button = oldbutton + 32;
886 ox = x;
887 oy = y;
888 } else {
889 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
890 button = 3;
891 } else {
892 button -= Button1;
893 if (button >= 3)
894 button += 64 - 3;
895 }
896 if (e->xbutton.type == ButtonPress) {
897 oldbutton = button;
898 ox = x;
899 oy = y;
900 } else if (e->xbutton.type == ButtonRelease) {
901 oldbutton = 3;
902 /* MODE_MOUSEX10: no button release reporting */
903 if (IS_SET(MODE_MOUSEX10))
904 return;
905 if (button == 64 || button == 65)
906 return;
907 }
908 }
909
910 if (!IS_SET(MODE_MOUSEX10)) {
911 button += ((state & ShiftMask ) ? 4 : 0)
912 + ((state & Mod4Mask ) ? 8 : 0)
913 + ((state & ControlMask) ? 16 : 0);
914 }
915
916 if (IS_SET(MODE_MOUSESGR)) {
917 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
918 button, x+1, y+1,
919 e->xbutton.type == ButtonRelease ? 'm' : 'M');
920 } else if (x < 223 && y < 223) {
921 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
922 32+button, 32+x+1, 32+y+1);
923 } else {
924 return;
925 }
926
927 ttywrite(buf, len);
928 }
929
930 void
931 bpress(XEvent *e)
932 {
933 struct timespec now;
934 Mousekey *mk;
935
936 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
937 mousereport(e);
938 return;
939 }
940
941 for (mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
942 if (e->xbutton.button == mk->b
943 && match(mk->mask, e->xbutton.state)) {
944 ttysend(mk->s, strlen(mk->s));
945 return;
946 }
947 }
948
949 if (e->xbutton.button == Button1) {
950 clock_gettime(CLOCK_MONOTONIC, &now);
951
952 /* Clear previous selection, logically and visually. */
953 selclear(NULL);
954 sel.mode = SEL_EMPTY;
955 sel.type = SEL_REGULAR;
956 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
957 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
958
959 /*
960 * If the user clicks below predefined timeouts specific
961 * snapping behaviour is exposed.
962 */
963 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
964 sel.snap = SNAP_LINE;
965 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
966 sel.snap = SNAP_WORD;
967 } else {
968 sel.snap = 0;
969 }
970 selnormalize();
971
972 if (sel.snap != 0)
973 sel.mode = SEL_READY;
974 tsetdirt(sel.nb.y, sel.ne.y);
975 sel.tclick2 = sel.tclick1;
976 sel.tclick1 = now;
977 }
978 }
979
980 char *
981 getsel(void)
982 {
983 char *str, *ptr;
984 int y, bufsize, lastx, linelen;
985 Glyph *gp, *last;
986
987 if (sel.ob.x == -1)
988 return NULL;
989
990 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
991 ptr = str = xmalloc(bufsize);
992
993 /* append every set & selected glyph to the selection */
994 for (y = sel.nb.y; y <= sel.ne.y; y++) {
995 linelen = tlinelen(y);
996
997 if (sel.type == SEL_RECTANGULAR) {
998 gp = &term.line[y][sel.nb.x];
999 lastx = sel.ne.x;
1000 } else {
1001 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
1002 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
1003 }
1004 last = &term.line[y][MIN(lastx, linelen-1)];
1005 while (last >= gp && last->u == ' ')
1006 --last;
1007
1008 for ( ; gp <= last; ++gp) {
1009 if (gp->mode & ATTR_WDUMMY)
1010 continue;
1011
1012 ptr += utf8encode(gp->u, ptr);
1013 }
1014
1015 /*
1016 * Copy and pasting of line endings is inconsistent
1017 * in the inconsistent terminal and GUI world.
1018 * The best solution seems like to produce '\n' when
1019 * something is copied from st and convert '\n' to
1020 * '\r', when something to be pasted is received by
1021 * st.
1022 * FIXME: Fix the computer world.
1023 */
1024 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
1025 *ptr++ = '\n';
1026 }
1027 *ptr = 0;
1028 return str;
1029 }
1030
1031 void
1032 selcopy(Time t)
1033 {
1034 xsetsel(getsel(), t);
1035 }
1036
1037 void
1038 propnotify(XEvent *e)
1039 {
1040 XPropertyEvent *xpev;
1041 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1042
1043 xpev = &e->xproperty;
1044 if (xpev->state == PropertyNewValue &&
1045 (xpev->atom == XA_PRIMARY ||
1046 xpev->atom == clipboard)) {
1047 slenotify(e);
1048 }
1049 }
1050
1051 void
1052 selnotify(XEvent *e)
1053 {
1054 ulong nitems, ofs, rem;
1055 int format;
1056 uchar *data, *last, *repl;
1057 Atom type, incratom, property;
1058
1059 ofs = 0;
1060 if (e->type == SelectionNotify) {
1061 property = e->xselection.property;
1062 } else if(e->type == PropertyNotify) {
1063 property = e->xproperty.atom;
1064 } else {
1065 return;
1066 }
1067 if (property == None)
1068 return;
1069
1070 do {
1071 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
1072 BUFSIZ/4, False, AnyPropertyType,
1073 &type, &format, &nitems, &rem,
1074 &data)) {
1075 fprintf(stderr, "Clipboard allocation failed\n");
1076 return;
1077 }
1078
1079 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
1080 /*
1081 * If there is some PropertyNotify with no data, then
1082 * this is the signal of the selection owner that all
1083 * data has been transferred. We won't need to receive
1084 * PropertyNotify events anymore.
1085 */
1086 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
1087 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1088 &xw.attrs);
1089 }
1090
1091 if (type == incratom) {
1092 /*
1093 * Activate the PropertyNotify events so we receive
1094 * when the selection owner does send us the next
1095 * chunk of data.
1096 */
1097 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
1098 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1099 &xw.attrs);
1100
1101 /*
1102 * Deleting the property is the transfer start signal.
1103 */
1104 XDeleteProperty(xw.dpy, xw.win, (int)property);
1105 continue;
1106 }
1107
1108 /*
1109 * As seen in getsel:
1110 * Line endings are inconsistent in the terminal and GUI world
1111 * copy and pasting. When receiving some selection data,
1112 * replace all '\n' with '\r'.
1113 * FIXME: Fix the computer world.
1114 */
1115 repl = data;
1116 last = data + nitems * format / 8;
1117 while ((repl = memchr(repl, '\n', last - repl))) {
1118 *repl++ = '\r';
1119 }
1120
1121 if (IS_SET(MODE_BRCKTPASTE))
1122 ttywrite("\033[200~", 6);
1123 ttysend((char *)data, nitems * format / 8);
1124 if (IS_SET(MODE_BRCKTPASTE))
1125 ttywrite("\033[201~", 6);
1126 XFree(data);
1127 /* number of 32-bit chunks returned */
1128 ofs += nitems * format / 32;
1129 } while (rem > 0);
1130
1131 /*
1132 * Deleting the property again tells the selection owner to send the
1133 * next data chunk in the property.
1134 */
1135 if (e->type == PropertyNotify)
1136 XDeleteProperty(xw.dpy, xw.win, (int)property);
1137 }
1138
1139 void
1140 selpaste(const Arg *dummy)
1141 {
1142 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1143 xw.win, CurrentTime);
1144 }
1145
1146 void
1147 clipcopy(const Arg *dummy)
1148 {
1149 Atom clipboard;
1150
1151 if (sel.clipboard != NULL)
1152 free(sel.clipboard);
1153
1154 if (sel.primary != NULL) {
1155 sel.clipboard = xstrdup(sel.primary);
1156 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1157 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1158 }
1159 }
1160
1161 void
1162 clippaste(const Arg *dummy)
1163 {
1164 Atom clipboard;
1165
1166 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1167 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1168 xw.win, CurrentTime);
1169 }
1170
1171 void
1172 selclear(XEvent *e)
1173 {
1174 if (sel.ob.x == -1)
1175 return;
1176 sel.mode = SEL_IDLE;
1177 sel.ob.x = -1;
1178 tsetdirt(sel.nb.y, sel.ne.y);
1179 }
1180
1181 void
1182 selrequest(XEvent *e)
1183 {
1184 XSelectionRequestEvent *xsre;
1185 XSelectionEvent xev;
1186 Atom xa_targets, string, clipboard;
1187 char *seltext;
1188
1189 xsre = (XSelectionRequestEvent *) e;
1190 xev.type = SelectionNotify;
1191 xev.requestor = xsre->requestor;
1192 xev.selection = xsre->selection;
1193 xev.target = xsre->target;
1194 xev.time = xsre->time;
1195 if (xsre->property == None)
1196 xsre->property = xsre->target;
1197
1198 /* reject */
1199 xev.property = None;
1200
1201 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1202 if (xsre->target == xa_targets) {
1203 /* respond with the supported type */
1204 string = sel.xtarget;
1205 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1206 XA_ATOM, 32, PropModeReplace,
1207 (uchar *) &string, 1);
1208 xev.property = xsre->property;
1209 } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1210 /*
1211 * xith XA_STRING non ascii characters may be incorrect in the
1212 * requestor. It is not our problem, use utf8.
1213 */
1214 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1215 if (xsre->selection == XA_PRIMARY) {
1216 seltext = sel.primary;
1217 } else if (xsre->selection == clipboard) {
1218 seltext = sel.clipboard;
1219 } else {
1220 fprintf(stderr,
1221 "Unhandled clipboard selection 0x%lx\n",
1222 xsre->selection);
1223 return;
1224 }
1225 if (seltext != NULL) {
1226 XChangeProperty(xsre->display, xsre->requestor,
1227 xsre->property, xsre->target,
1228 8, PropModeReplace,
1229 (uchar *)seltext, strlen(seltext));
1230 xev.property = xsre->property;
1231 }
1232 }
1233
1234 /* all done, send a notification to the listener */
1235 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
1236 fprintf(stderr, "Error sending SelectionNotify event\n");
1237 }
1238
1239 void
1240 xsetsel(char *str, Time t)
1241 {
1242 free(sel.primary);
1243 sel.primary = str;
1244
1245 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1246 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1247 selclear(0);
1248 }
1249
1250 void
1251 brelease(XEvent *e)
1252 {
1253 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1254 mousereport(e);
1255 return;
1256 }
1257
1258 if (e->xbutton.button == Button2) {
1259 selpaste(NULL);
1260 } else if (e->xbutton.button == Button1) {
1261 if (sel.mode == SEL_READY) {
1262 getbuttoninfo(e);
1263 selcopy(e->xbutton.time);
1264 } else
1265 selclear(NULL);
1266 sel.mode = SEL_IDLE;
1267 tsetdirt(sel.nb.y, sel.ne.y);
1268 }
1269 }
1270
1271 void
1272 bmotion(XEvent *e)
1273 {
1274 int oldey, oldex, oldsby, oldsey;
1275
1276 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1277 mousereport(e);
1278 return;
1279 }
1280
1281 if (!sel.mode)
1282 return;
1283
1284 sel.mode = SEL_READY;
1285 oldey = sel.oe.y;
1286 oldex = sel.oe.x;
1287 oldsby = sel.nb.y;
1288 oldsey = sel.ne.y;
1289 getbuttoninfo(e);
1290
1291 if (oldey != sel.oe.y || oldex != sel.oe.x)
1292 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1293 }
1294
1295 void
1296 die(const char *errstr, ...)
1297 {
1298 va_list ap;
1299
1300 va_start(ap, errstr);
1301 vfprintf(stderr, errstr, ap);
1302 va_end(ap);
1303 exit(1);
1304 }
1305
1306 void
1307 execsh(void)
1308 {
1309 char **args, *sh, *prog;
1310 const struct passwd *pw;
1311 char buf[sizeof(long) * 8 + 1];
1312
1313 errno = 0;
1314 if ((pw = getpwuid(getuid())) == NULL) {
1315 if (errno)
1316 die("getpwuid:%s\n", strerror(errno));
1317 else
1318 die("who are you?\n");
1319 }
1320
1321 if (!(sh = getenv("SHELL"))) {
1322 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1323 }
1324
1325 if (opt_cmd)
1326 prog = opt_cmd[0];
1327 else if (utmp)
1328 prog = utmp;
1329 else
1330 prog = sh;
1331 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1332
1333 snprintf(buf, sizeof(buf), "%lu", xw.win);
1334
1335 unsetenv("COLUMNS");
1336 unsetenv("LINES");
1337 unsetenv("TERMCAP");
1338 setenv("LOGNAME", pw->pw_name, 1);
1339 setenv("USER", pw->pw_name, 1);
1340 setenv("SHELL", sh, 1);
1341 setenv("HOME", pw->pw_dir, 1);
1342 setenv("TERM", termname, 1);
1343 setenv("WINDOWID", buf, 1);
1344
1345 signal(SIGCHLD, SIG_DFL);
1346 signal(SIGHUP, SIG_DFL);
1347 signal(SIGINT, SIG_DFL);
1348 signal(SIGQUIT, SIG_DFL);
1349 signal(SIGTERM, SIG_DFL);
1350 signal(SIGALRM, SIG_DFL);
1351
1352 execvp(prog, args);
1353 _exit(1);
1354 }
1355
1356 void
1357 sigchld(int a)
1358 {
1359 int stat;
1360 pid_t p;
1361
1362 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
1363 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1364
1365 if (pid != p)
1366 return;
1367
1368 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
1369 die("child finished with error '%d'\n", stat);
1370 exit(0);
1371 }
1372
1373
1374 void
1375 stty(void)
1376 {
1377 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1378 size_t n, siz;
1379
1380 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
1381 die("incorrect stty parameters\n");
1382 memcpy(cmd, stty_args, n);
1383 q = cmd + n;
1384 siz = sizeof(cmd) - n;
1385 for (p = opt_cmd; p && (s = *p); ++p) {
1386 if ((n = strlen(s)) > siz-1)
1387 die("stty parameter length too long\n");
1388 *q++ = ' ';
1389 q = memcpy(q, s, n);
1390 q += n;
1391 siz-= n + 1;
1392 }
1393 *q = '\0';
1394 if (system(cmd) != 0)
1395 perror("Couldn't call stty");
1396 }
1397
1398 void
1399 ttynew(void)
1400 {
1401 int m, s;
1402 struct winsize w = {term.row, term.col, 0, 0};
1403
1404 if (opt_io) {
1405 term.mode |= MODE_PRINT;
1406 iofd = (!strcmp(opt_io, "-")) ?
1407 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
1408 if (iofd < 0) {
1409 fprintf(stderr, "Error opening %s:%s\n",
1410 opt_io, strerror(errno));
1411 }
1412 }
1413
1414 if (opt_line) {
1415 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
1416 die("open line failed: %s\n", strerror(errno));
1417 close(0);
1418 dup(cmdfd);
1419 stty();
1420 return;
1421 }
1422
1423 /* seems to work fine on linux, openbsd and freebsd */
1424 if (openpty(&m, &s, NULL, NULL, &w) < 0)
1425 die("openpty failed: %s\n", strerror(errno));
1426
1427 switch (pid = fork()) {
1428 case -1:
1429 die("fork failed\n");
1430 break;
1431 case 0:
1432 close(iofd);
1433 setsid(); /* create a new process group */
1434 dup2(s, 0);
1435 dup2(s, 1);
1436 dup2(s, 2);
1437 if (ioctl(s, TIOCSCTTY, NULL) < 0)
1438 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1439 close(s);
1440 close(m);
1441 execsh();
1442 break;
1443 default:
1444 close(s);
1445 cmdfd = m;
1446 signal(SIGCHLD, sigchld);
1447 break;
1448 }
1449 }
1450
1451 void
1452 ttyread(void)
1453 {
1454 static char buf[BUFSIZ];
1455 static int buflen = 0;
1456 char *ptr;
1457 int charsize; /* size of utf8 char in bytes */
1458 Rune unicodep;
1459 int ret;
1460
1461 /* append read bytes to unprocessed bytes */
1462 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1463 die("Couldn't read from shell: %s\n", strerror(errno));
1464
1465 /* process every complete utf8 char */
1466 buflen += ret;
1467 ptr = buf;
1468 while ((charsize = utf8decode(ptr, &unicodep, buflen))) {
1469 tputc(unicodep);
1470 ptr += charsize;
1471 buflen -= charsize;
1472 }
1473
1474 /* keep any uncomplete utf8 char for the next call */
1475 memmove(buf, ptr, buflen);
1476 }
1477
1478 void
1479 ttywrite(const char *s, size_t n)
1480 {
1481 if (xwrite(cmdfd, s, n) == -1)
1482 die("write error on tty: %s\n", strerror(errno));
1483 }
1484
1485 void
1486 ttysend(char *s, size_t n)
1487 {
1488 int len;
1489 Rune u;
1490
1491 ttywrite(s, n);
1492 if (IS_SET(MODE_ECHO))
1493 while ((len = utf8decode(s, &u, n)) > 0) {
1494 techo(u);
1495 n -= len;
1496 s += len;
1497 }
1498 }
1499
1500 void
1501 ttyresize(void)
1502 {
1503 struct winsize w;
1504
1505 w.ws_row = term.row;
1506 w.ws_col = term.col;
1507 w.ws_xpixel = xw.tw;
1508 w.ws_ypixel = xw.th;
1509 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1510 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1511 }
1512
1513 int
1514 tattrset(int attr)
1515 {
1516 int i, j;
1517
1518 for (i = 0; i < term.row-1; i++) {
1519 for (j = 0; j < term.col-1; j++) {
1520 if (term.line[i][j].mode & attr)
1521 return 1;
1522 }
1523 }
1524
1525 return 0;
1526 }
1527
1528 void
1529 tsetdirt(int top, int bot)
1530 {
1531 int i;
1532
1533 LIMIT(top, 0, term.row-1);
1534 LIMIT(bot, 0, term.row-1);
1535
1536 for (i = top; i <= bot; i++)
1537 term.dirty[i] = 1;
1538 }
1539
1540 void
1541 tsetdirtattr(int attr)
1542 {
1543 int i, j;
1544
1545 for (i = 0; i < term.row-1; i++) {
1546 for (j = 0; j < term.col-1; j++) {
1547 if (term.line[i][j].mode & attr) {
1548 tsetdirt(i, i);
1549 break;
1550 }
1551 }
1552 }
1553 }
1554
1555 void
1556 tfulldirt(void)
1557 {
1558 tsetdirt(0, term.row-1);
1559 }
1560
1561 void
1562 tcursor(int mode)
1563 {
1564 static TCursor c[2];
1565 int alt = IS_SET(MODE_ALTSCREEN);
1566
1567 if (mode == CURSOR_SAVE) {
1568 c[alt] = term.c;
1569 } else if (mode == CURSOR_LOAD) {
1570 term.c = c[alt];
1571 tmoveto(c[alt].x, c[alt].y);
1572 }
1573 }
1574
1575 void
1576 treset(void)
1577 {
1578 uint i;
1579
1580 term.c = (TCursor){{
1581 .mode = ATTR_NULL,
1582 .fg = defaultfg,
1583 .bg = defaultbg
1584 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1585
1586 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1587 for (i = tabspaces; i < term.col; i += tabspaces)
1588 term.tabs[i] = 1;
1589 term.top = 0;
1590 term.bot = term.row - 1;
1591 term.mode = MODE_WRAP;
1592 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1593 term.charset = 0;
1594
1595 for (i = 0; i < 2; i++) {
1596 tmoveto(0, 0);
1597 tcursor(CURSOR_SAVE);
1598 tclearregion(0, 0, term.col-1, term.row-1);
1599 tswapscreen();
1600 }
1601 }
1602
1603 void
1604 tnew(int col, int row)
1605 {
1606 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1607 tresize(col, row);
1608 term.numlock = 1;
1609
1610 treset();
1611 }
1612
1613 void
1614 tswapscreen(void)
1615 {
1616 Line *tmp = term.line;
1617
1618 term.line = term.alt;
1619 term.alt = tmp;
1620 term.mode ^= MODE_ALTSCREEN;
1621 tfulldirt();
1622 }
1623
1624 void
1625 tscrolldown(int orig, int n)
1626 {
1627 int i;
1628 Line temp;
1629
1630 LIMIT(n, 0, term.bot-orig+1);
1631
1632 tsetdirt(orig, term.bot-n);
1633 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1634
1635 for (i = term.bot; i >= orig+n; i--) {
1636 temp = term.line[i];
1637 term.line[i] = term.line[i-n];
1638 term.line[i-n] = temp;
1639 }
1640
1641 selscroll(orig, n);
1642 }
1643
1644 void
1645 tscrollup(int orig, int n)
1646 {
1647 int i;
1648 Line temp;
1649
1650 LIMIT(n, 0, term.bot-orig+1);
1651
1652 tclearregion(0, orig, term.col-1, orig+n-1);
1653 tsetdirt(orig+n, term.bot);
1654
1655 for (i = orig; i <= term.bot-n; i++) {
1656 temp = term.line[i];
1657 term.line[i] = term.line[i+n];
1658 term.line[i+n] = temp;
1659 }
1660
1661 selscroll(orig, -n);
1662 }
1663
1664 void
1665 selscroll(int orig, int n)
1666 {
1667 if (sel.ob.x == -1)
1668 return;
1669
1670 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1671 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1672 selclear(NULL);
1673 return;
1674 }
1675 if (sel.type == SEL_RECTANGULAR) {
1676 if (sel.ob.y < term.top)
1677 sel.ob.y = term.top;
1678 if (sel.oe.y > term.bot)
1679 sel.oe.y = term.bot;
1680 } else {
1681 if (sel.ob.y < term.top) {
1682 sel.ob.y = term.top;
1683 sel.ob.x = 0;
1684 }
1685 if (sel.oe.y > term.bot) {
1686 sel.oe.y = term.bot;
1687 sel.oe.x = term.col;
1688 }
1689 }
1690 selnormalize();
1691 }
1692 }
1693
1694 void
1695 tnewline(int first_col)
1696 {
1697 int y = term.c.y;
1698
1699 if (y == term.bot) {
1700 tscrollup(term.top, 1);
1701 } else {
1702 y++;
1703 }
1704 tmoveto(first_col ? 0 : term.c.x, y);
1705 }
1706
1707 void
1708 csiparse(void)
1709 {
1710 char *p = csiescseq.buf, *np;
1711 long int v;
1712
1713 csiescseq.narg = 0;
1714 if (*p == '?') {
1715 csiescseq.priv = 1;
1716 p++;
1717 }
1718
1719 csiescseq.buf[csiescseq.len] = '\0';
1720 while (p < csiescseq.buf+csiescseq.len) {
1721 np = NULL;
1722 v = strtol(p, &np, 10);
1723 if (np == p)
1724 v = 0;
1725 if (v == LONG_MAX || v == LONG_MIN)
1726 v = -1;
1727 csiescseq.arg[csiescseq.narg++] = v;
1728 p = np;
1729 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1730 break;
1731 p++;
1732 }
1733 csiescseq.mode[0] = *p++;
1734 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1735 }
1736
1737 /* for absolute user moves, when decom is set */
1738 void
1739 tmoveato(int x, int y)
1740 {
1741 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1742 }
1743
1744 void
1745 tmoveto(int x, int y)
1746 {
1747 int miny, maxy;
1748
1749 if (term.c.state & CURSOR_ORIGIN) {
1750 miny = term.top;
1751 maxy = term.bot;
1752 } else {
1753 miny = 0;
1754 maxy = term.row - 1;
1755 }
1756 term.c.state &= ~CURSOR_WRAPNEXT;
1757 term.c.x = LIMIT(x, 0, term.col-1);
1758 term.c.y = LIMIT(y, miny, maxy);
1759 }
1760
1761 void
1762 tsetchar(Rune u, Glyph *attr, int x, int y)
1763 {
1764 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1765 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1766 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1767 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1768 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1769 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1770 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1771 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1772 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1773 };
1774
1775 /*
1776 * The table is proudly stolen from rxvt.
1777 */
1778 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1779 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1780 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1781
1782 if (term.line[y][x].mode & ATTR_WIDE) {
1783 if (x+1 < term.col) {
1784 term.line[y][x+1].u = ' ';
1785 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1786 }
1787 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1788 term.line[y][x-1].u = ' ';
1789 term.line[y][x-1].mode &= ~ATTR_WIDE;
1790 }
1791
1792 term.dirty[y] = 1;
1793 term.line[y][x] = *attr;
1794 term.line[y][x].u = u;
1795 }
1796
1797 void
1798 tclearregion(int x1, int y1, int x2, int y2)
1799 {
1800 int x, y, temp;
1801 Glyph *gp;
1802
1803 if (x1 > x2)
1804 temp = x1, x1 = x2, x2 = temp;
1805 if (y1 > y2)
1806 temp = y1, y1 = y2, y2 = temp;
1807
1808 LIMIT(x1, 0, term.col-1);
1809 LIMIT(x2, 0, term.col-1);
1810 LIMIT(y1, 0, term.row-1);
1811 LIMIT(y2, 0, term.row-1);
1812
1813 for (y = y1; y <= y2; y++) {
1814 term.dirty[y] = 1;
1815 for (x = x1; x <= x2; x++) {
1816 gp = &term.line[y][x];
1817 if (selected(x, y))
1818 selclear(NULL);
1819 gp->fg = term.c.attr.fg;
1820 gp->bg = term.c.attr.bg;
1821 gp->mode = 0;
1822 gp->u = ' ';
1823 }
1824 }
1825 }
1826
1827 void
1828 tdeletechar(int n)
1829 {
1830 int dst, src, size;
1831 Glyph *line;
1832
1833 LIMIT(n, 0, term.col - term.c.x);
1834
1835 dst = term.c.x;
1836 src = term.c.x + n;
1837 size = term.col - src;
1838 line = term.line[term.c.y];
1839
1840 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1841 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1842 }
1843
1844 void
1845 tinsertblank(int n)
1846 {
1847 int dst, src, size;
1848 Glyph *line;
1849
1850 LIMIT(n, 0, term.col - term.c.x);
1851
1852 dst = term.c.x + n;
1853 src = term.c.x;
1854 size = term.col - dst;
1855 line = term.line[term.c.y];
1856
1857 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1858 tclearregion(src, term.c.y, dst - 1, term.c.y);
1859 }
1860
1861 void
1862 tinsertblankline(int n)
1863 {
1864 if (BETWEEN(term.c.y, term.top, term.bot))
1865 tscrolldown(term.c.y, n);
1866 }
1867
1868 void
1869 tdeleteline(int n)
1870 {
1871 if (BETWEEN(term.c.y, term.top, term.bot))
1872 tscrollup(term.c.y, n);
1873 }
1874
1875 int32_t
1876 tdefcolor(int *attr, int *npar, int l)
1877 {
1878 int32_t idx = -1;
1879 uint r, g, b;
1880
1881 switch (attr[*npar + 1]) {
1882 case 2: /* direct color in RGB space */
1883 if (*npar + 4 >= l) {
1884 fprintf(stderr,
1885 "erresc(38): Incorrect number of parameters (%d)\n",
1886 *npar);
1887 break;
1888 }
1889 r = attr[*npar + 2];
1890 g = attr[*npar + 3];
1891 b = attr[*npar + 4];
1892 *npar += 4;
1893 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1894 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1895 r, g, b);
1896 else
1897 idx = TRUECOLOR(r, g, b);
1898 break;
1899 case 5: /* indexed color */
1900 if (*npar + 2 >= l) {
1901 fprintf(stderr,
1902 "erresc(38): Incorrect number of parameters (%d)\n",
1903 *npar);
1904 break;
1905 }
1906 *npar += 2;
1907 if (!BETWEEN(attr[*npar], 0, 255))
1908 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1909 else
1910 idx = attr[*npar];
1911 break;
1912 case 0: /* implemented defined (only foreground) */
1913 case 1: /* transparent */
1914 case 3: /* direct color in CMY space */
1915 case 4: /* direct color in CMYK space */
1916 default:
1917 fprintf(stderr,
1918 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1919 break;
1920 }
1921
1922 return idx;
1923 }
1924
1925 void
1926 tsetattr(int *attr, int l)
1927 {
1928 int i;
1929 int32_t idx;
1930
1931 for (i = 0; i < l; i++) {
1932 switch (attr[i]) {
1933 case 0:
1934 term.c.attr.mode &= ~(
1935 ATTR_BOLD |
1936 ATTR_FAINT |
1937 ATTR_ITALIC |
1938 ATTR_UNDERLINE |
1939 ATTR_BLINK |
1940 ATTR_REVERSE |
1941 ATTR_INVISIBLE |
1942 ATTR_STRUCK );
1943 term.c.attr.fg = defaultfg;
1944 term.c.attr.bg = defaultbg;
1945 break;
1946 case 1:
1947 term.c.attr.mode |= ATTR_BOLD;
1948 break;
1949 case 2:
1950 term.c.attr.mode |= ATTR_FAINT;
1951 break;
1952 case 3:
1953 term.c.attr.mode |= ATTR_ITALIC;
1954 break;
1955 case 4:
1956 term.c.attr.mode |= ATTR_UNDERLINE;
1957 break;
1958 case 5: /* slow blink */
1959 /* FALLTHROUGH */
1960 case 6: /* rapid blink */
1961 term.c.attr.mode |= ATTR_BLINK;
1962 break;
1963 case 7:
1964 term.c.attr.mode |= ATTR_REVERSE;
1965 break;
1966 case 8:
1967 term.c.attr.mode |= ATTR_INVISIBLE;
1968 break;
1969 case 9:
1970 term.c.attr.mode |= ATTR_STRUCK;
1971 break;
1972 case 22:
1973 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
1974 break;
1975 case 23:
1976 term.c.attr.mode &= ~ATTR_ITALIC;
1977 break;
1978 case 24:
1979 term.c.attr.mode &= ~ATTR_UNDERLINE;
1980 break;
1981 case 25:
1982 term.c.attr.mode &= ~ATTR_BLINK;
1983 break;
1984 case 27:
1985 term.c.attr.mode &= ~ATTR_REVERSE;
1986 break;
1987 case 28:
1988 term.c.attr.mode &= ~ATTR_INVISIBLE;
1989 break;
1990 case 29:
1991 term.c.attr.mode &= ~ATTR_STRUCK;
1992 break;
1993 case 38:
1994 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1995 term.c.attr.fg = idx;
1996 break;
1997 case 39:
1998 term.c.attr.fg = defaultfg;
1999 break;
2000 case 48:
2001 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2002 term.c.attr.bg = idx;
2003 break;
2004 case 49:
2005 term.c.attr.bg = defaultbg;
2006 break;
2007 default:
2008 if (BETWEEN(attr[i], 30, 37)) {
2009 term.c.attr.fg = attr[i] - 30;
2010 } else if (BETWEEN(attr[i], 40, 47)) {
2011 term.c.attr.bg = attr[i] - 40;
2012 } else if (BETWEEN(attr[i], 90, 97)) {
2013 term.c.attr.fg = attr[i] - 90 + 8;
2014 } else if (BETWEEN(attr[i], 100, 107)) {
2015 term.c.attr.bg = attr[i] - 100 + 8;
2016 } else {
2017 fprintf(stderr,
2018 "erresc(default): gfx attr %d unknown\n",
2019 attr[i]), csidump();
2020 }
2021 break;
2022 }
2023 }
2024 }
2025
2026 void
2027 tsetscroll(int t, int b)
2028 {
2029 int temp;
2030
2031 LIMIT(t, 0, term.row-1);
2032 LIMIT(b, 0, term.row-1);
2033 if (t > b) {
2034 temp = t;
2035 t = b;
2036 b = temp;
2037 }
2038 term.top = t;
2039 term.bot = b;
2040 }
2041
2042 void
2043 tsetmode(int priv, int set, int *args, int narg)
2044 {
2045 int *lim, mode;
2046 int alt;
2047
2048 for (lim = args + narg; args < lim; ++args) {
2049 if (priv) {
2050 switch (*args) {
2051 case 1: /* DECCKM -- Cursor key */
2052 MODBIT(term.mode, set, MODE_APPCURSOR);
2053 break;
2054 case 5: /* DECSCNM -- Reverse video */
2055 mode = term.mode;
2056 MODBIT(term.mode, set, MODE_REVERSE);
2057 if (mode != term.mode)
2058 redraw();
2059 break;
2060 case 6: /* DECOM -- Origin */
2061 MODBIT(term.c.state, set, CURSOR_ORIGIN);
2062 tmoveato(0, 0);
2063 break;
2064 case 7: /* DECAWM -- Auto wrap */
2065 MODBIT(term.mode, set, MODE_WRAP);
2066 break;
2067 case 0: /* Error (IGNORED) */
2068 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
2069 case 3: /* DECCOLM -- Column (IGNORED) */
2070 case 4: /* DECSCLM -- Scroll (IGNORED) */
2071 case 8: /* DECARM -- Auto repeat (IGNORED) */
2072 case 18: /* DECPFF -- Printer feed (IGNORED) */
2073 case 19: /* DECPEX -- Printer extent (IGNORED) */
2074 case 42: /* DECNRCM -- National characters (IGNORED) */
2075 case 12: /* att610 -- Start blinking cursor (IGNORED) */
2076 break;
2077 case 25: /* DECTCEM -- Text Cursor Enable Mode */
2078 MODBIT(term.mode, !set, MODE_HIDE);
2079 break;
2080 case 9: /* X10 mouse compatibility mode */
2081 xsetpointermotion(0);
2082 MODBIT(term.mode, 0, MODE_MOUSE);
2083 MODBIT(term.mode, set, MODE_MOUSEX10);
2084 break;
2085 case 1000: /* 1000: report button press */
2086 xsetpointermotion(0);
2087 MODBIT(term.mode, 0, MODE_MOUSE);
2088 MODBIT(term.mode, set, MODE_MOUSEBTN);
2089 break;
2090 case 1002: /* 1002: report motion on button press */
2091 xsetpointermotion(0);
2092 MODBIT(term.mode, 0, MODE_MOUSE);
2093 MODBIT(term.mode, set, MODE_MOUSEMOTION);
2094 break;
2095 case 1003: /* 1003: enable all mouse motions */
2096 xsetpointermotion(set);
2097 MODBIT(term.mode, 0, MODE_MOUSE);
2098 MODBIT(term.mode, set, MODE_MOUSEMANY);
2099 break;
2100 case 1004: /* 1004: send focus events to tty */
2101 MODBIT(term.mode, set, MODE_FOCUS);
2102 break;
2103 case 1006: /* 1006: extended reporting mode */
2104 MODBIT(term.mode, set, MODE_MOUSESGR);
2105 break;
2106 case 1034:
2107 MODBIT(term.mode, set, MODE_8BIT);
2108 break;
2109 case 1049: /* swap screen & set/restore cursor as xterm */
2110 if (!allowaltscreen)
2111 break;
2112 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2113 /* FALLTHROUGH */
2114 case 47: /* swap screen */
2115 case 1047:
2116 if (!allowaltscreen)
2117 break;
2118 alt = IS_SET(MODE_ALTSCREEN);
2119 if (alt) {
2120 tclearregion(0, 0, term.col-1,
2121 term.row-1);
2122 }
2123 if (set ^ alt) /* set is always 1 or 0 */
2124 tswapscreen();
2125 if (*args != 1049)
2126 break;
2127 /* FALLTHROUGH */
2128 case 1048:
2129 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2130 break;
2131 case 2004: /* 2004: bracketed paste mode */
2132 MODBIT(term.mode, set, MODE_BRCKTPASTE);
2133 break;
2134 /* Not implemented mouse modes. See comments there. */
2135 case 1001: /* mouse highlight mode; can hang the
2136 terminal by design when implemented. */
2137 case 1005: /* UTF-8 mouse mode; will confuse
2138 applications not supporting UTF-8
2139 and luit. */
2140 case 1015: /* urxvt mangled mouse mode; incompatible
2141 and can be mistaken for other control
2142 codes. */
2143 default:
2144 fprintf(stderr,
2145 "erresc: unknown private set/reset mode %d\n",
2146 *args);
2147 break;
2148 }
2149 } else {
2150 switch (*args) {
2151 case 0: /* Error (IGNORED) */
2152 break;
2153 case 2: /* KAM -- keyboard action */
2154 MODBIT(term.mode, set, MODE_KBDLOCK);
2155 break;
2156 case 4: /* IRM -- Insertion-replacement */
2157 MODBIT(term.mode, set, MODE_INSERT);
2158 break;
2159 case 12: /* SRM -- Send/Receive */
2160 MODBIT(term.mode, !set, MODE_ECHO);
2161 break;
2162 case 20: /* LNM -- Linefeed/new line */
2163 MODBIT(term.mode, set, MODE_CRLF);
2164 break;
2165 default:
2166 fprintf(stderr,
2167 "erresc: unknown set/reset mode %d\n",
2168 *args);
2169 break;
2170 }
2171 }
2172 }
2173 }
2174
2175 void
2176 csihandle(void)
2177 {
2178 char buf[40];
2179 int len;
2180
2181 switch (csiescseq.mode[0]) {
2182 default:
2183 unknown:
2184 fprintf(stderr, "erresc: unknown csi ");
2185 csidump();
2186 /* die(""); */
2187 break;
2188 case '@': /* ICH -- Insert <n> blank char */
2189 DEFAULT(csiescseq.arg[0], 1);
2190 tinsertblank(csiescseq.arg[0]);
2191 break;
2192 case 'A': /* CUU -- Cursor <n> Up */
2193 DEFAULT(csiescseq.arg[0], 1);
2194 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2195 break;
2196 case 'B': /* CUD -- Cursor <n> Down */
2197 case 'e': /* VPR --Cursor <n> Down */
2198 DEFAULT(csiescseq.arg[0], 1);
2199 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2200 break;
2201 case 'i': /* MC -- Media Copy */
2202 switch (csiescseq.arg[0]) {
2203 case 0:
2204 tdump();
2205 break;
2206 case 1:
2207 tdumpline(term.c.y);
2208 break;
2209 case 2:
2210 tdumpsel();
2211 break;
2212 case 4:
2213 term.mode &= ~MODE_PRINT;
2214 break;
2215 case 5:
2216 term.mode |= MODE_PRINT;
2217 break;
2218 }
2219 break;
2220 case 'c': /* DA -- Device Attributes */
2221 if (csiescseq.arg[0] == 0)
2222 ttywrite(vtiden, sizeof(vtiden) - 1);
2223 break;
2224 case 'C': /* CUF -- Cursor <n> Forward */
2225 case 'a': /* HPR -- Cursor <n> Forward */
2226 DEFAULT(csiescseq.arg[0], 1);
2227 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2228 break;
2229 case 'D': /* CUB -- Cursor <n> Backward */
2230 DEFAULT(csiescseq.arg[0], 1);
2231 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2232 break;
2233 case 'E': /* CNL -- Cursor <n> Down and first col */
2234 DEFAULT(csiescseq.arg[0], 1);
2235 tmoveto(0, term.c.y+csiescseq.arg[0]);
2236 break;
2237 case 'F': /* CPL -- Cursor <n> Up and first col */
2238 DEFAULT(csiescseq.arg[0], 1);
2239 tmoveto(0, term.c.y-csiescseq.arg[0]);
2240 break;
2241 case 'g': /* TBC -- Tabulation clear */
2242 switch (csiescseq.arg[0]) {
2243 case 0: /* clear current tab stop */
2244 term.tabs[term.c.x] = 0;
2245 break;
2246 case 3: /* clear all the tabs */
2247 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2248 break;
2249 default:
2250 goto unknown;
2251 }
2252 break;
2253 case 'G': /* CHA -- Move to <col> */
2254 case '`': /* HPA */
2255 DEFAULT(csiescseq.arg[0], 1);
2256 tmoveto(csiescseq.arg[0]-1, term.c.y);
2257 break;
2258 case 'H': /* CUP -- Move to <row> <col> */
2259 case 'f': /* HVP */
2260 DEFAULT(csiescseq.arg[0], 1);
2261 DEFAULT(csiescseq.arg[1], 1);
2262 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2263 break;
2264 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2265 DEFAULT(csiescseq.arg[0], 1);
2266 tputtab(csiescseq.arg[0]);
2267 break;
2268 case 'J': /* ED -- Clear screen */
2269 selclear(NULL);
2270 switch (csiescseq.arg[0]) {
2271 case 0: /* below */
2272 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2273 if (term.c.y < term.row-1) {
2274 tclearregion(0, term.c.y+1, term.col-1,
2275 term.row-1);
2276 }
2277 break;
2278 case 1: /* above */
2279 if (term.c.y > 1)
2280 tclearregion(0, 0, term.col-1, term.c.y-1);
2281 tclearregion(0, term.c.y, term.c.x, term.c.y);
2282 break;
2283 case 2: /* all */
2284 tclearregion(0, 0, term.col-1, term.row-1);
2285 break;
2286 default:
2287 goto unknown;
2288 }
2289 break;
2290 case 'K': /* EL -- Clear line */
2291 switch (csiescseq.arg[0]) {
2292 case 0: /* right */
2293 tclearregion(term.c.x, term.c.y, term.col-1,
2294 term.c.y);
2295 break;
2296 case 1: /* left */
2297 tclearregion(0, term.c.y, term.c.x, term.c.y);
2298 break;
2299 case 2: /* all */
2300 tclearregion(0, term.c.y, term.col-1, term.c.y);
2301 break;
2302 }
2303 break;
2304 case 'S': /* SU -- Scroll <n> line up */
2305 DEFAULT(csiescseq.arg[0], 1);
2306 tscrollup(term.top, csiescseq.arg[0]);
2307 break;
2308 case 'T': /* SD -- Scroll <n> line down */
2309 DEFAULT(csiescseq.arg[0], 1);
2310 tscrolldown(term.top, csiescseq.arg[0]);
2311 break;
2312 case 'L': /* IL -- Insert <n> blank lines */
2313 DEFAULT(csiescseq.arg[0], 1);
2314 tinsertblankline(csiescseq.arg[0]);
2315 break;
2316 case 'l': /* RM -- Reset Mode */
2317 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2318 break;
2319 case 'M': /* DL -- Delete <n> lines */
2320 DEFAULT(csiescseq.arg[0], 1);
2321 tdeleteline(csiescseq.arg[0]);
2322 break;
2323 case 'X': /* ECH -- Erase <n> char */
2324 DEFAULT(csiescseq.arg[0], 1);
2325 tclearregion(term.c.x, term.c.y,
2326 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2327 break;
2328 case 'P': /* DCH -- Delete <n> char */
2329 DEFAULT(csiescseq.arg[0], 1);
2330 tdeletechar(csiescseq.arg[0]);
2331 break;
2332 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2333 DEFAULT(csiescseq.arg[0], 1);
2334 tputtab(-csiescseq.arg[0]);
2335 break;
2336 case 'd': /* VPA -- Move to <row> */
2337 DEFAULT(csiescseq.arg[0], 1);
2338 tmoveato(term.c.x, csiescseq.arg[0]-1);
2339 break;
2340 case 'h': /* SM -- Set terminal mode */
2341 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2342 break;
2343 case 'm': /* SGR -- Terminal attribute (color) */
2344 tsetattr(csiescseq.arg, csiescseq.narg);
2345 break;
2346 case 'n': /* DSR – Device Status Report (cursor position) */
2347 if (csiescseq.arg[0] == 6) {
2348 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2349 term.c.y+1, term.c.x+1);
2350 ttywrite(buf, len);
2351 }
2352 break;
2353 case 'r': /* DECSTBM -- Set Scrolling Region */
2354 if (csiescseq.priv) {
2355 goto unknown;
2356 } else {
2357 DEFAULT(csiescseq.arg[0], 1);
2358 DEFAULT(csiescseq.arg[1], term.row);
2359 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2360 tmoveato(0, 0);
2361 }
2362 break;
2363 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2364 tcursor(CURSOR_SAVE);
2365 break;
2366 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2367 tcursor(CURSOR_LOAD);
2368 break;
2369 case ' ':
2370 switch (csiescseq.mode[1]) {
2371 case 'q': /* DECSCUSR -- Set Cursor Style */
2372 DEFAULT(csiescseq.arg[0], 1);
2373 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2374 goto unknown;
2375 }
2376 xw.cursor = csiescseq.arg[0];
2377 break;
2378 default:
2379 goto unknown;
2380 }
2381 break;
2382 }
2383 }
2384
2385 void
2386 csidump(void)
2387 {
2388 int i;
2389 uint c;
2390
2391 printf("ESC[");
2392 for (i = 0; i < csiescseq.len; i++) {
2393 c = csiescseq.buf[i] & 0xff;
2394 if (isprint(c)) {
2395 putchar(c);
2396 } else if (c == '\n') {
2397 printf("(\\n)");
2398 } else if (c == '\r') {
2399 printf("(\\r)");
2400 } else if (c == 0x1b) {
2401 printf("(\\e)");
2402 } else {
2403 printf("(%02x)", c);
2404 }
2405 }
2406 putchar('\n');
2407 }
2408
2409 void
2410 csireset(void)
2411 {
2412 memset(&csiescseq, 0, sizeof(csiescseq));
2413 }
2414
2415 void
2416 strhandle(void)
2417 {
2418 char *p = NULL;
2419 int j, narg, par;
2420
2421 term.esc &= ~(ESC_STR_END|ESC_STR);
2422 strparse();
2423 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2424
2425 switch (strescseq.type) {
2426 case ']': /* OSC -- Operating System Command */
2427 switch (par) {
2428 case 0:
2429 case 1:
2430 case 2:
2431 if (narg > 1)
2432 xsettitle(strescseq.args[1]);
2433 return;
2434 case 4: /* color set */
2435 if (narg < 3)
2436 break;
2437 p = strescseq.args[2];
2438 /* FALLTHROUGH */
2439 case 104: /* color reset, here p = NULL */
2440 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2441 if (xsetcolorname(j, p)) {
2442 fprintf(stderr, "erresc: invalid color %s\n", p);
2443 } else {
2444 /*
2445 * TODO if defaultbg color is changed, borders
2446 * are dirty
2447 */
2448 redraw();
2449 }
2450 return;
2451 }
2452 break;
2453 case 'k': /* old title set compatibility */
2454 xsettitle(strescseq.args[0]);
2455 return;
2456 case 'P': /* DCS -- Device Control String */
2457 case '_': /* APC -- Application Program Command */
2458 case '^': /* PM -- Privacy Message */
2459 return;
2460 }
2461
2462 fprintf(stderr, "erresc: unknown str ");
2463 strdump();
2464 }
2465
2466 void
2467 strparse(void)
2468 {
2469 int c;
2470 char *p = strescseq.buf;
2471
2472 strescseq.narg = 0;
2473 strescseq.buf[strescseq.len] = '\0';
2474
2475 if (*p == '\0')
2476 return;
2477
2478 while (strescseq.narg < STR_ARG_SIZ) {
2479 strescseq.args[strescseq.narg++] = p;
2480 while ((c = *p) != ';' && c != '\0')
2481 ++p;
2482 if (c == '\0')
2483 return;
2484 *p++ = '\0';
2485 }
2486 }
2487
2488 void
2489 strdump(void)
2490 {
2491 int i;
2492 uint c;
2493
2494 printf("ESC%c", strescseq.type);
2495 for (i = 0; i < strescseq.len; i++) {
2496 c = strescseq.buf[i] & 0xff;
2497 if (c == '\0') {
2498 return;
2499 } else if (isprint(c)) {
2500 putchar(c);
2501 } else if (c == '\n') {
2502 printf("(\\n)");
2503 } else if (c == '\r') {
2504 printf("(\\r)");
2505 } else if (c == 0x1b) {
2506 printf("(\\e)");
2507 } else {
2508 printf("(%02x)", c);
2509 }
2510 }
2511 printf("ESC\\\n");
2512 }
2513
2514 void
2515 strreset(void)
2516 {
2517 memset(&strescseq, 0, sizeof(strescseq));
2518 }
2519
2520 void
2521 tprinter(char *s, size_t len)
2522 {
2523 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
2524 fprintf(stderr, "Error writing in %s:%s\n",
2525 opt_io, strerror(errno));
2526 close(iofd);
2527 iofd = -1;
2528 }
2529 }
2530
2531 void
2532 toggleprinter(const Arg *arg)
2533 {
2534 term.mode ^= MODE_PRINT;
2535 }
2536
2537 void
2538 printscreen(const Arg *arg)
2539 {
2540 tdump();
2541 }
2542
2543 void
2544 printsel(const Arg *arg)
2545 {
2546 tdumpsel();
2547 }
2548
2549 void
2550 tdumpsel(void)
2551 {
2552 char *ptr;
2553
2554 if ((ptr = getsel())) {
2555 tprinter(ptr, strlen(ptr));
2556 free(ptr);
2557 }
2558 }
2559
2560 void
2561 tdumpline(int n)
2562 {
2563 char buf[UTF_SIZ];
2564 Glyph *bp, *end;
2565
2566 bp = &term.line[n][0];
2567 end = &bp[MIN(tlinelen(n), term.col) - 1];
2568 if (bp != end || bp->u != ' ') {
2569 for ( ;bp <= end; ++bp)
2570 tprinter(buf, utf8encode(bp->u, buf));
2571 }
2572 tprinter("\n", 1);
2573 }
2574
2575 void
2576 tdump(void)
2577 {
2578 int i;
2579
2580 for (i = 0; i < term.row; ++i)
2581 tdumpline(i);
2582 }
2583
2584 void
2585 tputtab(int n)
2586 {
2587 uint x = term.c.x;
2588
2589 if (n > 0) {
2590 while (x < term.col && n--)
2591 for (++x; x < term.col && !term.tabs[x]; ++x)
2592 /* nothing */ ;
2593 } else if (n < 0) {
2594 while (x > 0 && n++)
2595 for (--x; x > 0 && !term.tabs[x]; --x)
2596 /* nothing */ ;
2597 }
2598 term.c.x = LIMIT(x, 0, term.col-1);
2599 }
2600
2601 void
2602 techo(Rune u)
2603 {
2604 if (ISCONTROL(u)) { /* control code */
2605 if (u & 0x80) {
2606 u &= 0x7f;
2607 tputc('^');
2608 tputc('[');
2609 } else if (u != '\n' && u != '\r' && u != '\t') {
2610 u ^= 0x40;
2611 tputc('^');
2612 }
2613 }
2614 tputc(u);
2615 }
2616
2617 void
2618 tdeftran(char ascii)
2619 {
2620 static char cs[] = "0B";
2621 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2622 char *p;
2623
2624 if ((p = strchr(cs, ascii)) == NULL) {
2625 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2626 } else {
2627 term.trantbl[term.icharset] = vcs[p - cs];
2628 }
2629 }
2630
2631 void
2632 tdectest(char c)
2633 {
2634 int x, y;
2635
2636 if (c == '8') { /* DEC screen alignment test. */
2637 for (x = 0; x < term.col; ++x) {
2638 for (y = 0; y < term.row; ++y)
2639 tsetchar('E', &term.c.attr, x, y);
2640 }
2641 }
2642 }
2643
2644 void
2645 tstrsequence(uchar c)
2646 {
2647 switch (c) {
2648 case 0x90: /* DCS -- Device Control String */
2649 c = 'P';
2650 break;
2651 case 0x9f: /* APC -- Application Program Command */
2652 c = '_';
2653 break;
2654 case 0x9e: /* PM -- Privacy Message */
2655 c = '^';
2656 break;
2657 case 0x9d: /* OSC -- Operating System Command */
2658 c = ']';
2659 break;
2660 }
2661 strreset();
2662 strescseq.type = c;
2663 term.esc |= ESC_STR;
2664 }
2665
2666 void
2667 tcontrolcode(uchar ascii)
2668 {
2669 switch (ascii) {
2670 case '\t': /* HT */
2671 tputtab(1);
2672 return;
2673 case '\b': /* BS */
2674 tmoveto(term.c.x-1, term.c.y);
2675 return;
2676 case '\r': /* CR */
2677 tmoveto(0, term.c.y);
2678 return;
2679 case '\f': /* LF */
2680 case '\v': /* VT */
2681 case '\n': /* LF */
2682 /* go to first col if the mode is set */
2683 tnewline(IS_SET(MODE_CRLF));
2684 return;
2685 case '\a': /* BEL */
2686 if (term.esc & ESC_STR_END) {
2687 /* backwards compatibility to xterm */
2688 strhandle();
2689 } else {
2690 if (!(xw.state & WIN_FOCUSED))
2691 xseturgency(1);
2692 if (bellvolume)
2693 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2694 }
2695 break;
2696 case '\033': /* ESC */
2697 csireset();
2698 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2699 term.esc |= ESC_START;
2700 return;
2701 case '\016': /* SO (LS1 -- Locking shift 1) */
2702 case '\017': /* SI (LS0 -- Locking shift 0) */
2703 term.charset = 1 - (ascii - '\016');
2704 return;
2705 case '\032': /* SUB */
2706 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2707 case '\030': /* CAN */
2708 csireset();
2709 break;
2710 case '\005': /* ENQ (IGNORED) */
2711 case '\000': /* NUL (IGNORED) */
2712 case '\021': /* XON (IGNORED) */
2713 case '\023': /* XOFF (IGNORED) */
2714 case 0177: /* DEL (IGNORED) */
2715 return;
2716 case 0x84: /* TODO: IND */
2717 break;
2718 case 0x85: /* NEL -- Next line */
2719 tnewline(1); /* always go to first col */
2720 break;
2721 case 0x88: /* HTS -- Horizontal tab stop */
2722 term.tabs[term.c.x] = 1;
2723 break;
2724 case 0x8d: /* TODO: RI */
2725 case 0x8e: /* TODO: SS2 */
2726 case 0x8f: /* TODO: SS3 */
2727 case 0x98: /* TODO: SOS */
2728 break;
2729 case 0x9a: /* DECID -- Identify Terminal */
2730 ttywrite(vtiden, sizeof(vtiden) - 1);
2731 break;
2732 case 0x9b: /* TODO: CSI */
2733 case 0x9c: /* TODO: ST */
2734 break;
2735 case 0x90: /* DCS -- Device Control String */
2736 case 0x9f: /* APC -- Application Program Command */
2737 case 0x9e: /* PM -- Privacy Message */
2738 case 0x9d: /* OSC -- Operating System Command */
2739 tstrsequence(ascii);
2740 return;
2741 }
2742 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2743 term.esc &= ~(ESC_STR_END|ESC_STR);
2744 }
2745
2746 /*
2747 * returns 1 when the sequence is finished and it hasn't to read
2748 * more characters for this sequence, otherwise 0
2749 */
2750 int
2751 eschandle(uchar ascii)
2752 {
2753 switch (ascii) {
2754 case '[':
2755 term.esc |= ESC_CSI;
2756 return 0;
2757 case '#':
2758 term.esc |= ESC_TEST;
2759 return 0;
2760 case 'P': /* DCS -- Device Control String */
2761 case '_': /* APC -- Application Program Command */
2762 case '^': /* PM -- Privacy Message */
2763 case ']': /* OSC -- Operating System Command */
2764 case 'k': /* old title set compatibility */
2765 tstrsequence(ascii);
2766 return 0;
2767 case 'n': /* LS2 -- Locking shift 2 */
2768 case 'o': /* LS3 -- Locking shift 3 */
2769 term.charset = 2 + (ascii - 'n');
2770 break;
2771 case '(': /* GZD4 -- set primary charset G0 */
2772 case ')': /* G1D4 -- set secondary charset G1 */
2773 case '*': /* G2D4 -- set tertiary charset G2 */
2774 case '+': /* G3D4 -- set quaternary charset G3 */
2775 term.icharset = ascii - '(';
2776 term.esc |= ESC_ALTCHARSET;
2777 return 0;
2778 case 'D': /* IND -- Linefeed */
2779 if (term.c.y == term.bot) {
2780 tscrollup(term.top, 1);
2781 } else {
2782 tmoveto(term.c.x, term.c.y+1);
2783 }
2784 break;
2785 case 'E': /* NEL -- Next line */
2786 tnewline(1); /* always go to first col */
2787 break;
2788 case 'H': /* HTS -- Horizontal tab stop */
2789 term.tabs[term.c.x] = 1;
2790 break;
2791 case 'M': /* RI -- Reverse index */
2792 if (term.c.y == term.top) {
2793 tscrolldown(term.top, 1);
2794 } else {
2795 tmoveto(term.c.x, term.c.y-1);
2796 }
2797 break;
2798 case 'Z': /* DECID -- Identify Terminal */
2799 ttywrite(vtiden, sizeof(vtiden) - 1);
2800 break;
2801 case 'c': /* RIS -- Reset to inital state */
2802 treset();
2803 xresettitle();
2804 xloadcols();
2805 break;
2806 case '=': /* DECPAM -- Application keypad */
2807 term.mode |= MODE_APPKEYPAD;
2808 break;
2809 case '>': /* DECPNM -- Normal keypad */
2810 term.mode &= ~MODE_APPKEYPAD;
2811 break;
2812 case '7': /* DECSC -- Save Cursor */
2813 tcursor(CURSOR_SAVE);
2814 break;
2815 case '8': /* DECRC -- Restore Cursor */
2816 tcursor(CURSOR_LOAD);
2817 break;
2818 case '\\': /* ST -- String Terminator */
2819 if (term.esc & ESC_STR_END)
2820 strhandle();
2821 break;
2822 default:
2823 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2824 (uchar) ascii, isprint(ascii)? ascii:'.');
2825 break;
2826 }
2827 return 1;
2828 }
2829
2830 void
2831 tputc(Rune u)
2832 {
2833 char c[UTF_SIZ];
2834 int control;
2835 int width, len;
2836 Glyph *gp;
2837
2838 len = utf8encode(u, c);
2839 if ((width = wcwidth(u)) == -1) {
2840 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
2841 width = 1;
2842 }
2843
2844 if (IS_SET(MODE_PRINT))
2845 tprinter(c, len);
2846 control = ISCONTROL(u);
2847
2848 /*
2849 * STR sequence must be checked before anything else
2850 * because it uses all following characters until it
2851 * receives a ESC, a SUB, a ST or any other C1 control
2852 * character.
2853 */
2854 if (term.esc & ESC_STR) {
2855 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
2856 ISCONTROLC1(u)) {
2857 term.esc &= ~(ESC_START|ESC_STR);
2858 term.esc |= ESC_STR_END;
2859 } else if (strescseq.len + len < sizeof(strescseq.buf) - 1) {
2860 memmove(&strescseq.buf[strescseq.len], c, len);
2861 strescseq.len += len;
2862 return;
2863 } else {
2864 /*
2865 * Here is a bug in terminals. If the user never sends
2866 * some code to stop the str or esc command, then st
2867 * will stop responding. But this is better than
2868 * silently failing with unknown characters. At least
2869 * then users will report back.
2870 *
2871 * In the case users ever get fixed, here is the code:
2872 */
2873 /*
2874 * term.esc = 0;
2875 * strhandle();
2876 */
2877 return;
2878 }
2879 }
2880
2881 /*
2882 * Actions of control codes must be performed as soon they arrive
2883 * because they can be embedded inside a control sequence, and
2884 * they must not cause conflicts with sequences.
2885 */
2886 if (control) {
2887 tcontrolcode(u);
2888 /*
2889 * control codes are not shown ever
2890 */
2891 return;
2892 } else if (term.esc & ESC_START) {
2893 if (term.esc & ESC_CSI) {
2894 csiescseq.buf[csiescseq.len++] = u;
2895 if (BETWEEN(u, 0x40, 0x7E)
2896 || csiescseq.len >= \
2897 sizeof(csiescseq.buf)-1) {
2898 term.esc = 0;
2899 csiparse();
2900 csihandle();
2901 }
2902 return;
2903 } else if (term.esc & ESC_ALTCHARSET) {
2904 tdeftran(u);
2905 } else if (term.esc & ESC_TEST) {
2906 tdectest(u);
2907 } else {
2908 if (!eschandle(u))
2909 return;
2910 /* sequence already finished */
2911 }
2912 term.esc = 0;
2913 /*
2914 * All characters which form part of a sequence are not
2915 * printed
2916 */
2917 return;
2918 }
2919 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
2920 selclear(NULL);
2921
2922 gp = &term.line[term.c.y][term.c.x];
2923 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2924 gp->mode |= ATTR_WRAP;
2925 tnewline(1);
2926 gp = &term.line[term.c.y][term.c.x];
2927 }
2928
2929 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
2930 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
2931
2932 if (term.c.x+width > term.col) {
2933 tnewline(1);
2934 gp = &term.line[term.c.y][term.c.x];
2935 }
2936
2937 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
2938
2939 if (width == 2) {
2940 gp->mode |= ATTR_WIDE;
2941 if (term.c.x+1 < term.col) {
2942 gp[1].u = '\0';
2943 gp[1].mode = ATTR_WDUMMY;
2944 }
2945 }
2946 if (term.c.x+width < term.col) {
2947 tmoveto(term.c.x+width, term.c.y);
2948 } else {
2949 term.c.state |= CURSOR_WRAPNEXT;
2950 }
2951 }
2952
2953 void
2954 tresize(int col, int row)
2955 {
2956 int i;
2957 int minrow = MIN(row, term.row);
2958 int mincol = MIN(col, term.col);
2959 int *bp;
2960 TCursor c;
2961
2962 if (col < 1 || row < 1) {
2963 fprintf(stderr,
2964 "tresize: error resizing to %dx%d\n", col, row);
2965 return;
2966 }
2967
2968 /*
2969 * slide screen to keep cursor where we expect it -
2970 * tscrollup would work here, but we can optimize to
2971 * memmove because we're freeing the earlier lines
2972 */
2973 for (i = 0; i <= term.c.y - row; i++) {
2974 free(term.line[i]);
2975 free(term.alt[i]);
2976 }
2977 /* ensure that both src and dst are not NULL */
2978 if (i > 0) {
2979 memmove(term.line, term.line + i, row * sizeof(Line));
2980 memmove(term.alt, term.alt + i, row * sizeof(Line));
2981 }
2982 for (i += row; i < term.row; i++) {
2983 free(term.line[i]);
2984 free(term.alt[i]);
2985 }
2986
2987 /* resize to new width */
2988 term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
2989
2990 /* resize to new height */
2991 term.line = xrealloc(term.line, row * sizeof(Line));
2992 term.alt = xrealloc(term.alt, row * sizeof(Line));
2993 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2994 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2995
2996 /* resize each row to new width, zero-pad if needed */
2997 for (i = 0; i < minrow; i++) {
2998 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2999 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
3000 }
3001
3002 /* allocate any new rows */
3003 for (/* i == minrow */; i < row; i++) {
3004 term.line[i] = xmalloc(col * sizeof(Glyph));
3005 term.alt[i] = xmalloc(col * sizeof(Glyph));
3006 }
3007 if (col > term.col) {
3008 bp = term.tabs + term.col;
3009
3010 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
3011 while (--bp > term.tabs && !*bp)
3012 /* nothing */ ;
3013 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
3014 *bp = 1;
3015 }
3016 /* update terminal size */
3017 term.col = col;
3018 term.row = row;
3019 /* reset scrolling region */
3020 tsetscroll(0, row-1);
3021 /* make use of the LIMIT in tmoveto */
3022 tmoveto(term.c.x, term.c.y);
3023 /* Clearing both screens (it makes dirty all lines) */
3024 c = term.c;
3025 for (i = 0; i < 2; i++) {
3026 if (mincol < col && 0 < minrow) {
3027 tclearregion(mincol, 0, col - 1, minrow - 1);
3028 }
3029 if (0 < col && minrow < row) {
3030 tclearregion(0, minrow, col - 1, row - 1);
3031 }
3032 tswapscreen();
3033 tcursor(CURSOR_LOAD);
3034 }
3035 term.c = c;
3036 }
3037
3038 void
3039 xresize(int col, int row)
3040 {
3041 xw.tw = MAX(1, col * xw.cw);
3042 xw.th = MAX(1, row * xw.ch);
3043
3044 XFreePixmap(xw.dpy, xw.buf);
3045 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3046 DefaultDepth(xw.dpy, xw.scr));
3047 XftDrawChange(xw.draw, xw.buf);
3048 xclear(0, 0, xw.w, xw.h);
3049 }
3050
3051 ushort
3052 sixd_to_16bit(int x)
3053 {
3054 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
3055 }
3056
3057 int
3058 xloadcolor(int i, const char *name, Color *ncolor)
3059 {
3060 XRenderColor color = { .alpha = 0xffff };
3061
3062 if (!name) {
3063 if (BETWEEN(i, 16, 255)) { /* 256 color */
3064 if (i < 6*6*6+16) { /* same colors as xterm */
3065 color.red = sixd_to_16bit( ((i-16)/36)%6 );
3066 color.green = sixd_to_16bit( ((i-16)/6) %6 );
3067 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
3068 } else { /* greyscale */
3069 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
3070 color.green = color.blue = color.red;
3071 }
3072 return XftColorAllocValue(xw.dpy, xw.vis,
3073 xw.cmap, &color, ncolor);
3074 } else
3075 name = colorname[i];
3076 }
3077 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
3078 }
3079
3080 void
3081 xloadcols(void)
3082 {
3083 int i;
3084 static int loaded;
3085 Color *cp;
3086
3087 if (loaded) {
3088 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
3089 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
3090 }
3091
3092 for (i = 0; i < LEN(dc.col); i++)
3093 if (!xloadcolor(i, NULL, &dc.col[i])) {
3094 if (colorname[i])
3095 die("Could not allocate color '%s'\n", colorname[i]);
3096 else
3097 die("Could not allocate color %d\n", i);
3098 }
3099 loaded = 1;
3100 }
3101
3102 int
3103 xsetcolorname(int x, const char *name)
3104 {
3105 Color ncolor;
3106
3107 if (!BETWEEN(x, 0, LEN(dc.col)))
3108 return 1;
3109
3110
3111 if (!xloadcolor(x, name, &ncolor))
3112 return 1;
3113
3114 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
3115 dc.col[x] = ncolor;
3116 return 0;
3117 }
3118
3119 void
3120 xtermclear(int col1, int row1, int col2, int row2)
3121 {
3122 XftDrawRect(xw.draw,
3123 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
3124 borderpx + col1 * xw.cw,
3125 borderpx + row1 * xw.ch,
3126 (col2-col1+1) * xw.cw,
3127 (row2-row1+1) * xw.ch);
3128 }
3129
3130 /*
3131 * Absolute coordinates.
3132 */
3133 void
3134 xclear(int x1, int y1, int x2, int y2)
3135 {
3136 XftDrawRect(xw.draw,
3137 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
3138 x1, y1, x2-x1, y2-y1);
3139 }
3140
3141 void
3142 xhints(void)
3143 {
3144 XClassHint class = {opt_class ? opt_class : termname, termname};
3145 XWMHints wm = {.flags = InputHint, .input = 1};
3146 XSizeHints *sizeh = NULL;
3147
3148 sizeh = XAllocSizeHints();
3149
3150 sizeh->flags = PSize | PResizeInc | PBaseSize;
3151 sizeh->height = xw.h;
3152 sizeh->width = xw.w;
3153 sizeh->height_inc = xw.ch;
3154 sizeh->width_inc = xw.cw;
3155 sizeh->base_height = 2 * borderpx;
3156 sizeh->base_width = 2 * borderpx;
3157 if (xw.isfixed) {
3158 sizeh->flags |= PMaxSize | PMinSize;
3159 sizeh->min_width = sizeh->max_width = xw.w;
3160 sizeh->min_height = sizeh->max_height = xw.h;
3161 }
3162 if (xw.gm & (XValue|YValue)) {
3163 sizeh->flags |= USPosition | PWinGravity;
3164 sizeh->x = xw.l;
3165 sizeh->y = xw.t;
3166 sizeh->win_gravity = xgeommasktogravity(xw.gm);
3167 }
3168
3169 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
3170 &class);
3171 XFree(sizeh);
3172 }
3173
3174 int
3175 xgeommasktogravity(int mask)
3176 {
3177 switch (mask & (XNegative|YNegative)) {
3178 case 0:
3179 return NorthWestGravity;
3180 case XNegative:
3181 return NorthEastGravity;
3182 case YNegative:
3183 return SouthWestGravity;
3184 }
3185 return SouthEastGravity;
3186 }
3187
3188 int
3189 xloadfont(Font *f, FcPattern *pattern)
3190 {
3191 FcPattern *match;
3192 FcResult result;
3193
3194 match = FcFontMatch(NULL, pattern, &result);
3195 if (!match)
3196 return 1;
3197
3198 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3199 FcPatternDestroy(match);
3200 return 1;
3201 }
3202
3203 f->set = NULL;
3204 f->pattern = FcPatternDuplicate(pattern);
3205
3206 f->ascent = f->match->ascent;
3207 f->descent = f->match->descent;
3208 f->lbearing = 0;
3209 f->rbearing = f->match->max_advance_width;
3210
3211 f->height = f->ascent + f->descent;
3212 f->width = f->lbearing + f->rbearing;
3213
3214 return 0;
3215 }
3216
3217 void
3218 xloadfonts(char *fontstr, double fontsize)
3219 {
3220 FcPattern *pattern;
3221 double fontval;
3222 float ceilf(float);
3223
3224 if (fontstr[0] == '-') {
3225 pattern = XftXlfdParse(fontstr, False, False);
3226 } else {
3227 pattern = FcNameParse((FcChar8 *)fontstr);
3228 }
3229
3230 if (!pattern)
3231 die("st: can't open font %s\n", fontstr);
3232
3233 if (fontsize > 1) {
3234 FcPatternDel(pattern, FC_PIXEL_SIZE);
3235 FcPatternDel(pattern, FC_SIZE);
3236 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3237 usedfontsize = fontsize;
3238 } else {
3239 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
3240 FcResultMatch) {
3241 usedfontsize = fontval;
3242 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
3243 FcResultMatch) {
3244 usedfontsize = -1;
3245 } else {
3246 /*
3247 * Default font size is 12, if none given. This is to
3248 * have a known usedfontsize value.
3249 */
3250 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3251 usedfontsize = 12;
3252 }
3253 defaultfontsize = usedfontsize;
3254 }
3255
3256 FcConfigSubstitute(0, pattern, FcMatchPattern);
3257 FcDefaultSubstitute(pattern);
3258
3259 if (xloadfont(&dc.font, pattern))
3260 die("st: can't open font %s\n", fontstr);
3261
3262 if (usedfontsize < 0) {
3263 FcPatternGetDouble(dc.font.match->pattern,
3264 FC_PIXEL_SIZE, 0, &fontval);
3265 usedfontsize = fontval;
3266 if (fontsize == 0)
3267 defaultfontsize = fontval;
3268 }
3269
3270 /* Setting character width and height. */
3271 xw.cw = ceilf(dc.font.width * cwscale);
3272 xw.ch = ceilf(dc.font.height * chscale);
3273
3274 FcPatternDel(pattern, FC_SLANT);
3275 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3276 if (xloadfont(&dc.ifont, pattern))
3277 die("st: can't open font %s\n", fontstr);
3278
3279 FcPatternDel(pattern, FC_WEIGHT);
3280 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3281 if (xloadfont(&dc.ibfont, pattern))
3282 die("st: can't open font %s\n", fontstr);
3283
3284 FcPatternDel(pattern, FC_SLANT);
3285 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3286 if (xloadfont(&dc.bfont, pattern))
3287 die("st: can't open font %s\n", fontstr);
3288
3289 FcPatternDestroy(pattern);
3290 }
3291
3292 void
3293 xunloadfont(Font *f)
3294 {
3295 XftFontClose(xw.dpy, f->match);
3296 FcPatternDestroy(f->pattern);
3297 if (f->set)
3298 FcFontSetDestroy(f->set);
3299 }
3300
3301 void
3302 xunloadfonts(void)
3303 {
3304 /* Free the loaded fonts in the font cache. */
3305 while (frclen > 0)
3306 XftFontClose(xw.dpy, frc[--frclen].font);
3307
3308 xunloadfont(&dc.font);
3309 xunloadfont(&dc.bfont);
3310 xunloadfont(&dc.ifont);
3311 xunloadfont(&dc.ibfont);
3312 }
3313
3314 void
3315 xzoom(const Arg *arg)
3316 {
3317 Arg larg;
3318
3319 larg.f = usedfontsize + arg->f;
3320 xzoomabs(&larg);
3321 }
3322
3323 void
3324 xzoomabs(const Arg *arg)
3325 {
3326 xunloadfonts();
3327 xloadfonts(usedfont, arg->f);
3328 cresize(0, 0);
3329 redraw();
3330 xhints();
3331 }
3332
3333 void
3334 xzoomreset(const Arg *arg)
3335 {
3336 Arg larg;
3337
3338 if (defaultfontsize > 0) {
3339 larg.f = defaultfontsize;
3340 xzoomabs(&larg);
3341 }
3342 }
3343
3344 void
3345 xinit(void)
3346 {
3347 XGCValues gcvalues;
3348 Cursor cursor;
3349 Window parent;
3350 pid_t thispid = getpid();
3351
3352 if (!(xw.dpy = XOpenDisplay(NULL)))
3353 die("Can't open display\n");
3354 xw.scr = XDefaultScreen(xw.dpy);
3355 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3356
3357 /* font */
3358 if (!FcInit())
3359 die("Could not init fontconfig.\n");
3360
3361 usedfont = (opt_font == NULL)? font : opt_font;
3362 xloadfonts(usedfont, 0);
3363
3364 /* colors */
3365 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3366 xloadcols();
3367
3368 /* adjust fixed window geometry */
3369 xw.w = 2 * borderpx + term.col * xw.cw;
3370 xw.h = 2 * borderpx + term.row * xw.ch;
3371 if (xw.gm & XNegative)
3372 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3373 if (xw.gm & YNegative)
3374 xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
3375
3376 /* Events */
3377 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3378 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3379 xw.attrs.bit_gravity = NorthWestGravity;
3380 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3381 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3382 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3383 xw.attrs.colormap = xw.cmap;
3384
3385 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
3386 parent = XRootWindow(xw.dpy, xw.scr);
3387 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3388 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3389 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3390 | CWEventMask | CWColormap, &xw.attrs);
3391
3392 memset(&gcvalues, 0, sizeof(gcvalues));
3393 gcvalues.graphics_exposures = False;
3394 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3395 &gcvalues);
3396 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3397 DefaultDepth(xw.dpy, xw.scr));
3398 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3399 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3400
3401 /* Xft rendering context */
3402 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3403
3404 /* input methods */
3405 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3406 XSetLocaleModifiers("@im=local");
3407 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3408 XSetLocaleModifiers("@im=");
3409 if ((xw.xim = XOpenIM(xw.dpy,
3410 NULL, NULL, NULL)) == NULL) {
3411 die("XOpenIM failed. Could not open input"
3412 " device.\n");
3413 }
3414 }
3415 }
3416 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3417 | XIMStatusNothing, XNClientWindow, xw.win,
3418 XNFocusWindow, xw.win, NULL);
3419 if (xw.xic == NULL)
3420 die("XCreateIC failed. Could not obtain input method.\n");
3421
3422 /* white cursor, black outline */
3423 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
3424 XDefineCursor(xw.dpy, xw.win, cursor);
3425 XRecolorCursor(xw.dpy, cursor,
3426 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
3427 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
3428
3429 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3430 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3431 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3432 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3433
3434 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3435 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3436 PropModeReplace, (uchar *)&thispid, 1);
3437
3438 xresettitle();
3439 XMapWindow(xw.dpy, xw.win);
3440 xhints();
3441 XSync(xw.dpy, False);
3442 }
3443
3444 int
3445 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
3446 {
3447 float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
3448 ushort mode, prevmode = USHRT_MAX;
3449 Font *font = &dc.font;
3450 int frcflags = FRC_NORMAL;
3451 float runewidth = xw.cw;
3452 Rune rune;
3453 FT_UInt glyphidx;
3454 FcResult fcres;
3455 FcPattern *fcpattern, *fontpattern;
3456 FcFontSet *fcsets[] = { NULL };
3457 FcCharSet *fccharset;
3458 int i, f, numspecs = 0;
3459
3460 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
3461 /* Fetch rune and mode for current glyph. */
3462 rune = glyphs[i].u;
3463 mode = glyphs[i].mode;
3464
3465 /* Skip dummy wide-character spacing. */
3466 if (mode == ATTR_WDUMMY)
3467 continue;
3468
3469 /* Determine font for glyph if different from previous glyph. */
3470 if (prevmode != mode) {
3471 prevmode = mode;
3472 font = &dc.font;
3473 frcflags = FRC_NORMAL;
3474 runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
3475 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
3476 font = &dc.ibfont;
3477 frcflags = FRC_ITALICBOLD;
3478 } else if (mode & ATTR_ITALIC) {
3479 font = &dc.ifont;
3480 frcflags = FRC_ITALIC;
3481 } else if (mode & ATTR_BOLD) {
3482 font = &dc.bfont;
3483 frcflags = FRC_BOLD;
3484 }
3485 yp = winy + font->ascent;
3486 }
3487
3488 /* Lookup character index with default font. */
3489 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
3490 if (glyphidx) {
3491 specs[numspecs].font = font->match;
3492 specs[numspecs].glyph = glyphidx;
3493 specs[numspecs].x = (short)xp;
3494 specs[numspecs].y = (short)yp;
3495 xp += runewidth;
3496 numspecs++;
3497 continue;
3498 }
3499
3500 /* Fallback on font cache, search the font cache for match. */
3501 for (f = 0; f < frclen; f++) {
3502 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
3503 /* Everything correct. */
3504 if (glyphidx && frc[f].flags == frcflags)
3505 break;
3506 /* We got a default font for a not found glyph. */
3507 if (!glyphidx && frc[f].flags == frcflags
3508 && frc[f].unicodep == rune) {
3509 break;
3510 }
3511 }
3512
3513 /* Nothing was found. Use fontconfig to find matching font. */
3514 if (f >= frclen) {
3515 if (!font->set)
3516 font->set = FcFontSort(0, font->pattern,
3517 1, 0, &fcres);
3518 fcsets[0] = font->set;
3519
3520 /*
3521 * Nothing was found in the cache. Now use
3522 * some dozen of Fontconfig calls to get the
3523 * font for one single character.
3524 *
3525 * Xft and fontconfig are design failures.
3526 */
3527 fcpattern = FcPatternDuplicate(font->pattern);
3528 fccharset = FcCharSetCreate();
3529
3530 FcCharSetAddChar(fccharset, rune);
3531 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3532 fccharset);
3533 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
3534
3535 FcConfigSubstitute(0, fcpattern,
3536 FcMatchPattern);
3537 FcDefaultSubstitute(fcpattern);
3538
3539 fontpattern = FcFontSetMatch(0, fcsets, 1,
3540 fcpattern, &fcres);
3541
3542 /*
3543 * Overwrite or create the new cache entry.
3544 */
3545 if (frclen >= LEN(frc)) {
3546 frclen = LEN(frc) - 1;
3547 XftFontClose(xw.dpy, frc[frclen].font);
3548 frc[frclen].unicodep = 0;
3549 }
3550
3551 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3552 fontpattern);
3553 frc[frclen].flags = frcflags;
3554 frc[frclen].unicodep = rune;
3555
3556 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
3557
3558 f = frclen;
3559 frclen++;
3560
3561 FcPatternDestroy(fcpattern);
3562 FcCharSetDestroy(fccharset);
3563 }
3564
3565 specs[numspecs].font = frc[f].font;
3566 specs[numspecs].glyph = glyphidx;
3567 specs[numspecs].x = (short)xp;
3568 specs[numspecs].y = (short)(winy + frc[f].font->ascent);
3569 xp += runewidth;
3570 numspecs++;
3571 }
3572
3573 return numspecs;
3574 }
3575
3576 void
3577 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
3578 {
3579 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
3580 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3581 width = charlen * xw.cw;
3582 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3583 XRenderColor colfg, colbg;
3584 XRectangle r;
3585
3586 /* Determine foreground and background colors based on mode. */
3587 if (base.fg == defaultfg) {
3588 if (base.mode & ATTR_ITALIC)
3589 base.fg = defaultitalic;
3590 else if ((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
3591 base.fg = defaultitalic;
3592 else if (base.mode & ATTR_UNDERLINE)
3593 base.fg = defaultunderline;
3594 }
3595
3596 if (IS_TRUECOL(base.fg)) {
3597 colfg.alpha = 0xffff;
3598 colfg.red = TRUERED(base.fg);
3599 colfg.green = TRUEGREEN(base.fg);
3600 colfg.blue = TRUEBLUE(base.fg);
3601 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3602 fg = &truefg;
3603 } else {
3604 fg = &dc.col[base.fg];
3605 }
3606
3607 if (IS_TRUECOL(base.bg)) {
3608 colbg.alpha = 0xffff;
3609 colbg.green = TRUEGREEN(base.bg);
3610 colbg.red = TRUERED(base.bg);
3611 colbg.blue = TRUEBLUE(base.bg);
3612 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3613 bg = &truebg;
3614 } else {
3615 bg = &dc.col[base.bg];
3616 }
3617
3618 /* Change basic system colors [0-7] to bright system colors [8-15] */
3619 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
3620 fg = &dc.col[base.fg + 8];
3621
3622 if (IS_SET(MODE_REVERSE)) {
3623 if (fg == &dc.col[defaultfg]) {
3624 fg = &dc.col[defaultbg];
3625 } else {
3626 colfg.red = ~fg->color.red;
3627 colfg.green = ~fg->color.green;
3628 colfg.blue = ~fg->color.blue;
3629 colfg.alpha = fg->color.alpha;
3630 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3631 &revfg);
3632 fg = &revfg;
3633 }
3634
3635 if (bg == &dc.col[defaultbg]) {
3636 bg = &dc.col[defaultfg];
3637 } else {
3638 colbg.red = ~bg->color.red;
3639 colbg.green = ~bg->color.green;
3640 colbg.blue = ~bg->color.blue;
3641 colbg.alpha = bg->color.alpha;
3642 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3643 &revbg);
3644 bg = &revbg;
3645 }
3646 }
3647
3648 if (base.mode & ATTR_REVERSE) {
3649 temp = fg;
3650 fg = bg;
3651 bg = temp;
3652 }
3653
3654 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
3655 colfg.red = fg->color.red / 2;
3656 colfg.green = fg->color.green / 2;
3657 colfg.blue = fg->color.blue / 2;
3658 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3659 fg = &revfg;
3660 }
3661
3662 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3663 fg = bg;
3664
3665 if (base.mode & ATTR_INVISIBLE)
3666 fg = bg;
3667
3668 /* Intelligent cleaning up of the borders. */
3669 if (x == 0) {
3670 xclear(0, (y == 0)? 0 : winy, borderpx,
3671 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3672 }
3673 if (x + charlen >= term.col) {
3674 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3675 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3676 }
3677 if (y == 0)
3678 xclear(winx, 0, winx + width, borderpx);
3679 if (y == term.row-1)
3680 xclear(winx, winy + xw.ch, winx + width, xw.h);
3681
3682 /* Clean up the region we want to draw to. */
3683 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3684
3685 /* Set the clip region because Xft is sometimes dirty. */
3686 r.x = 0;
3687 r.y = 0;
3688 r.height = xw.ch;
3689 r.width = width;
3690 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3691
3692 /* Render the glyphs. */
3693 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
3694
3695 /* Render underline and strikethrough. */
3696 if (base.mode & ATTR_UNDERLINE) {
3697 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
3698 width, 1);
3699 }
3700
3701 if (base.mode & ATTR_STRUCK) {
3702 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
3703 width, 1);
3704 }
3705
3706 /* Reset clip to none. */
3707 XftDrawSetClip(xw.draw, 0);
3708 }
3709
3710 void
3711 xdrawglyph(Glyph g, int x, int y)
3712 {
3713 int numspecs;
3714 XftGlyphFontSpec spec;
3715 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
3716 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
3717 }
3718
3719 void
3720 xdrawcursor(void)
3721 {
3722 static int oldx = 0, oldy = 0;
3723 int curx;
3724 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs};
3725
3726 LIMIT(oldx, 0, term.col-1);
3727 LIMIT(oldy, 0, term.row-1);
3728
3729 curx = term.c.x;
3730
3731 /* adjust position if in dummy */
3732 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
3733 oldx--;
3734 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3735 curx--;
3736
3737 g.u = term.line[term.c.y][term.c.x].u;
3738
3739 /* remove the old cursor */
3740 xdrawglyph(term.line[oldy][oldx], oldx, oldy);
3741
3742 if (IS_SET(MODE_HIDE))
3743 return;
3744
3745 /* draw the new one */
3746 if (xw.state & WIN_FOCUSED) {
3747 switch (xw.cursor) {
3748 case 0: /* Blinking Block */
3749 case 1: /* Blinking Block (Default) */
3750 case 2: /* Steady Block */
3751 if (IS_SET(MODE_REVERSE)) {
3752 g.mode |= ATTR_REVERSE;
3753 g.fg = defaultcs;
3754 g.bg = defaultfg;
3755 }
3756
3757 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
3758 xdrawglyph(g, term.c.x, term.c.y);
3759 break;
3760 case 3: /* Blinking Underline */
3761 case 4: /* Steady Underline */
3762 XftDrawRect(xw.draw, &dc.col[defaultcs],
3763 borderpx + curx * xw.cw,
3764 borderpx + (term.c.y + 1) * xw.ch - cursorthickness,
3765 xw.cw, cursorthickness);
3766 break;
3767 case 5: /* Blinking bar */
3768 case 6: /* Steady bar */
3769 XftDrawRect(xw.draw, &dc.col[defaultcs],
3770 borderpx + curx * xw.cw,
3771 borderpx + term.c.y * xw.ch,
3772 cursorthickness, xw.ch);
3773 break;
3774 }
3775 } else {
3776 XftDrawRect(xw.draw, &dc.col[defaultcs],
3777 borderpx + curx * xw.cw,
3778 borderpx + term.c.y * xw.ch,
3779 xw.cw - 1, 1);
3780 XftDrawRect(xw.draw, &dc.col[defaultcs],
3781 borderpx + curx * xw.cw,
3782 borderpx + term.c.y * xw.ch,
3783 1, xw.ch - 1);
3784 XftDrawRect(xw.draw, &dc.col[defaultcs],
3785 borderpx + (curx + 1) * xw.cw - 1,
3786 borderpx + term.c.y * xw.ch,
3787 1, xw.ch - 1);
3788 XftDrawRect(xw.draw, &dc.col[defaultcs],
3789 borderpx + curx * xw.cw,
3790 borderpx + (term.c.y + 1) * xw.ch - 1,
3791 xw.cw, 1);
3792 }
3793 oldx = curx, oldy = term.c.y;
3794 }
3795
3796
3797 void
3798 xsettitle(char *p)
3799 {
3800 XTextProperty prop;
3801
3802 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3803 &prop);
3804 XSetWMName(xw.dpy, xw.win, &prop);
3805 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3806 XFree(prop.value);
3807 }
3808
3809 void
3810 xresettitle(void)
3811 {
3812 xsettitle(opt_title ? opt_title : "st");
3813 }
3814
3815 void
3816 redraw(void)
3817 {
3818 tfulldirt();
3819 draw();
3820 }
3821
3822 void
3823 draw(void)
3824 {
3825 drawregion(0, 0, term.col, term.row);
3826 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3827 xw.h, 0, 0);
3828 XSetForeground(xw.dpy, dc.gc,
3829 dc.col[IS_SET(MODE_REVERSE)?
3830 defaultfg : defaultbg].pixel);
3831 }
3832
3833 void
3834 drawregion(int x1, int y1, int x2, int y2)
3835 {
3836 int i, x, y, ox, numspecs;
3837 Glyph base, new;
3838 XftGlyphFontSpec* specs;
3839 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3840
3841 if (!(xw.state & WIN_VISIBLE))
3842 return;
3843
3844 for (y = y1; y < y2; y++) {
3845 if (!term.dirty[y])
3846 continue;
3847
3848 xtermclear(0, y, term.col, y);
3849 term.dirty[y] = 0;
3850
3851 specs = term.specbuf;
3852 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
3853
3854 i = ox = 0;
3855 for (x = x1; x < x2 && i < numspecs; x++) {
3856 new = term.line[y][x];
3857 if (new.mode == ATTR_WDUMMY)
3858 continue;
3859 if (ena_sel && selected(x, y))
3860 new.mode ^= ATTR_REVERSE;
3861 if (i > 0 && ATTRCMP(base, new)) {
3862 xdrawglyphfontspecs(specs, base, i, ox, y);
3863 specs += i;
3864 numspecs -= i;
3865 i = 0;
3866 }
3867 if (i == 0) {
3868 ox = x;
3869 base = new;
3870 }
3871 i++;
3872 }
3873 if (i > 0)
3874 xdrawglyphfontspecs(specs, base, i, ox, y);
3875 }
3876 xdrawcursor();
3877 }
3878
3879 void
3880 expose(XEvent *ev)
3881 {
3882 redraw();
3883 }
3884
3885 void
3886 visibility(XEvent *ev)
3887 {
3888 XVisibilityEvent *e = &ev->xvisibility;
3889
3890 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
3891 }
3892
3893 void
3894 unmap(XEvent *ev)
3895 {
3896 xw.state &= ~WIN_VISIBLE;
3897 }
3898
3899 void
3900 xsetpointermotion(int set)
3901 {
3902 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
3903 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
3904 }
3905
3906 void
3907 xseturgency(int add)
3908 {
3909 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3910
3911 MODBIT(h->flags, add, XUrgencyHint);
3912 XSetWMHints(xw.dpy, xw.win, h);
3913 XFree(h);
3914 }
3915
3916 void
3917 focus(XEvent *ev)
3918 {
3919 XFocusChangeEvent *e = &ev->xfocus;
3920
3921 if (e->mode == NotifyGrab)
3922 return;
3923
3924 if (ev->type == FocusIn) {
3925 XSetICFocus(xw.xic);
3926 xw.state |= WIN_FOCUSED;
3927 xseturgency(0);
3928 if (IS_SET(MODE_FOCUS))
3929 ttywrite("\033[I", 3);
3930 } else {
3931 XUnsetICFocus(xw.xic);
3932 xw.state &= ~WIN_FOCUSED;
3933 if (IS_SET(MODE_FOCUS))
3934 ttywrite("\033[O", 3);
3935 }
3936 }
3937
3938 int
3939 match(uint mask, uint state)
3940 {
3941 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
3942 }
3943
3944 void
3945 numlock(const Arg *dummy)
3946 {
3947 term.numlock ^= 1;
3948 }
3949
3950 char*
3951 kmap(KeySym k, uint state)
3952 {
3953 Key *kp;
3954 int i;
3955
3956 /* Check for mapped keys out of X11 function keys. */
3957 for (i = 0; i < LEN(mappedkeys); i++) {
3958 if (mappedkeys[i] == k)
3959 break;
3960 }
3961 if (i == LEN(mappedkeys)) {
3962 if ((k & 0xFFFF) < 0xFD00)
3963 return NULL;
3964 }
3965
3966 for (kp = key; kp < key + LEN(key); kp++) {
3967 if (kp->k != k)
3968 continue;
3969
3970 if (!match(kp->mask, state))
3971 continue;
3972
3973 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
3974 continue;
3975 if (term.numlock && kp->appkey == 2)
3976 continue;
3977
3978 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
3979 continue;
3980
3981 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
3982 continue;
3983
3984 return kp->s;
3985 }
3986
3987 return NULL;
3988 }
3989
3990 void
3991 kpress(XEvent *ev)
3992 {
3993 XKeyEvent *e = &ev->xkey;
3994 KeySym ksym;
3995 char buf[32], *customkey;
3996 int len;
3997 Rune c;
3998 Status status;
3999 Shortcut *bp;
4000
4001 if (IS_SET(MODE_KBDLOCK))
4002 return;
4003
4004 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
4005 /* 1. shortcuts */
4006 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
4007 if (ksym == bp->keysym && match(bp->mod, e->state)) {
4008 bp->func(&(bp->arg));
4009 return;
4010 }
4011 }
4012
4013 /* 2. custom keys from config.h */
4014 if ((customkey = kmap(ksym, e->state))) {
4015 ttysend(customkey, strlen(customkey));
4016 return;
4017 }
4018
4019 /* 3. composed string from input method */
4020 if (len == 0)
4021 return;
4022 if (len == 1 && e->state & Mod1Mask) {
4023 if (IS_SET(MODE_8BIT)) {
4024 if (*buf < 0177) {
4025 c = *buf | 0x80;
4026 len = utf8encode(c, buf);
4027 }
4028 } else {
4029 buf[1] = buf[0];
4030 buf[0] = '\033';
4031 len = 2;
4032 }
4033 }
4034 ttysend(buf, len);
4035 }
4036
4037
4038 void
4039 cmessage(XEvent *e)
4040 {
4041 /*
4042 * See xembed specs
4043 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
4044 */
4045 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
4046 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
4047 xw.state |= WIN_FOCUSED;
4048 xseturgency(0);
4049 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
4050 xw.state &= ~WIN_FOCUSED;
4051 }
4052 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
4053 /* Send SIGHUP to shell */
4054 kill(pid, SIGHUP);
4055 exit(0);
4056 }
4057 }
4058
4059 void
4060 cresize(int width, int height)
4061 {
4062 int col, row;
4063
4064 if (width != 0)
4065 xw.w = width;
4066 if (height != 0)
4067 xw.h = height;
4068
4069 col = (xw.w - 2 * borderpx) / xw.cw;
4070 row = (xw.h - 2 * borderpx) / xw.ch;
4071
4072 tresize(col, row);
4073 xresize(col, row);
4074 ttyresize();
4075 }
4076
4077 void
4078 resize(XEvent *e)
4079 {
4080 if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
4081 return;
4082
4083 cresize(e->xconfigure.width, e->xconfigure.height);
4084 }
4085
4086 void
4087 run(void)
4088 {
4089 XEvent ev;
4090 int w = xw.w, h = xw.h;
4091 fd_set rfd;
4092 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
4093 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
4094 long deltatime;
4095
4096 /* Waiting for window mapping */
4097 do {
4098 XNextEvent(xw.dpy, &ev);
4099 /*
4100 * XFilterEvent is required to be called after you using XOpenIM,
4101 * this is not unnecessary.It does not only filter the key event,
4102 * but some clientmessage for input method as well.
4103 */
4104 if (XFilterEvent(&ev, None))
4105 continue;
4106 if (ev.type == ConfigureNotify) {
4107 w = ev.xconfigure.width;
4108 h = ev.xconfigure.height;
4109 }
4110 } while (ev.type != MapNotify);
4111
4112 ttynew();
4113 cresize(w, h);
4114
4115 clock_gettime(CLOCK_MONOTONIC, &last);
4116 lastblink = last;
4117
4118 for (xev = actionfps;;) {
4119 FD_ZERO(&rfd);
4120 FD_SET(cmdfd, &rfd);
4121 FD_SET(xfd, &rfd);
4122
4123 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
4124 if (errno == EINTR)
4125 continue;
4126 die("select failed: %s\n", strerror(errno));
4127 }
4128 if (FD_ISSET(cmdfd, &rfd)) {
4129 ttyread();
4130 if (blinktimeout) {
4131 blinkset = tattrset(ATTR_BLINK);
4132 if (!blinkset)
4133 MODBIT(term.mode, 0, MODE_BLINK);
4134 }
4135 }
4136
4137 if (FD_ISSET(xfd, &rfd))
4138 xev = actionfps;
4139
4140 clock_gettime(CLOCK_MONOTONIC, &now);
4141 drawtimeout.tv_sec = 0;
4142 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
4143 tv = &drawtimeout;
4144
4145 dodraw = 0;
4146 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
4147 tsetdirtattr(ATTR_BLINK);
4148 term.mode ^= MODE_BLINK;
4149 lastblink = now;
4150 dodraw = 1;
4151 }
4152 deltatime = TIMEDIFF(now, last);
4153 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
4154 dodraw = 1;
4155 last = now;
4156 }
4157
4158 if (dodraw) {
4159 while (XPending(xw.dpy)) {
4160 XNextEvent(xw.dpy, &ev);
4161 if (XFilterEvent(&ev, None))
4162 continue;
4163 if (handler[ev.type])
4164 (handler[ev.type])(&ev);
4165 }
4166
4167 draw();
4168 XFlush(xw.dpy);
4169
4170 if (xev && !FD_ISSET(xfd, &rfd))
4171 xev--;
4172 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
4173 if (blinkset) {
4174 if (TIMEDIFF(now, lastblink) \
4175 > blinktimeout) {
4176 drawtimeout.tv_nsec = 1000;
4177 } else {
4178 drawtimeout.tv_nsec = (1E6 * \
4179 (blinktimeout - \
4180 TIMEDIFF(now,
4181 lastblink)));
4182 }
4183 drawtimeout.tv_sec = \
4184 drawtimeout.tv_nsec / 1E9;
4185 drawtimeout.tv_nsec %= (long)1E9;
4186 } else {
4187 tv = NULL;
4188 }
4189 }
4190 }
4191 }
4192 }
4193
4194 void
4195 usage(void)
4196 {
4197 die("%s " VERSION " (c) 2010-2015 st engineers\n"
4198 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
4199 " [-i] [-t title] [-w windowid] [-e command ...] [command ...]\n"
4200 " st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
4201 " [-i] [-t title] [-w windowid] [-l line] [stty_args ...]\n",
4202 argv0);
4203 }
4204
4205 int
4206 main(int argc, char *argv[])
4207 {
4208 uint cols = 80, rows = 24;
4209
4210 xw.l = xw.t = 0;
4211 xw.isfixed = False;
4212 xw.cursor = 0;
4213
4214 ARGBEGIN {
4215 case 'a':
4216 allowaltscreen = 0;
4217 break;
4218 case 'c':
4219 opt_class = EARGF(usage());
4220 break;
4221 case 'e':
4222 if (argc > 0)
4223 --argc, ++argv;
4224 goto run;
4225 case 'f':
4226 opt_font = EARGF(usage());
4227 break;
4228 case 'g':
4229 xw.gm = XParseGeometry(EARGF(usage()),
4230 &xw.l, &xw.t, &cols, &rows);
4231 break;
4232 case 'i':
4233 xw.isfixed = 1;
4234 break;
4235 case 'o':
4236 opt_io = EARGF(usage());
4237 break;
4238 case 'l':
4239 opt_line = EARGF(usage());
4240 break;
4241 case 't':
4242 opt_title = EARGF(usage());
4243 break;
4244 case 'w':
4245 opt_embed = EARGF(usage());
4246 break;
4247 case 'v':
4248 default:
4249 usage();
4250 } ARGEND;
4251
4252 run:
4253 if (argc > 0) {
4254 /* eat all remaining arguments */
4255 opt_cmd = argv;
4256 if (!opt_title && !opt_line)
4257 opt_title = basename(xstrdup(argv[0]));
4258 }
4259 setlocale(LC_CTYPE, "");
4260 XSetLocaleModifiers("");
4261 tnew(MAX(cols, 1), MAX(rows, 1));
4262 xinit();
4263 selinit();
4264 run();
4265
4266 return 0;
4267 }