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Use %u for uint
[st.git] / st.c
blob6f8d83f68497dbb7c479f41801d4389184ed778d
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 <stdbool.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include <signal.h>
14 #include <stdint.h>
15 #include <sys/ioctl.h>
16 #include <sys/select.h>
17 #include <sys/stat.h>
18 #include <sys/time.h>
19 #include <sys/types.h>
20 #include <sys/wait.h>
21 #include <time.h>
22 #include <unistd.h>
23 #include <libgen.h>
24 #include <X11/Xatom.h>
25 #include <X11/Xlib.h>
26 #include <X11/Xutil.h>
27 #include <X11/cursorfont.h>
28 #include <X11/keysym.h>
29 #include <X11/Xft/Xft.h>
30 #include <X11/XKBlib.h>
31 #include <fontconfig/fontconfig.h>
32 #include <wchar.h>
33
34 #include "arg.h"
35
36 char *argv0;
37
38 #define Glyph Glyph_
39 #define Font Font_
40
41 #if defined(__linux)
42 #include <pty.h>
43 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
44 #include <util.h>
45 #elif defined(__FreeBSD__) || defined(__DragonFly__)
46 #include <libutil.h>
47 #endif
48
49
50 /* XEMBED messages */
51 #define XEMBED_FOCUS_IN 4
52 #define XEMBED_FOCUS_OUT 5
53
54 /* Arbitrary sizes */
55 #define UTF_INVALID 0xFFFD
56 #define UTF_SIZ 4
57 #define ESC_BUF_SIZ (128*UTF_SIZ)
58 #define ESC_ARG_SIZ 16
59 #define STR_BUF_SIZ ESC_BUF_SIZ
60 #define STR_ARG_SIZ ESC_ARG_SIZ
61 #define DRAW_BUF_SIZ 20*1024
62 #define XK_ANY_MOD UINT_MAX
63 #define XK_NO_MOD 0
64 #define XK_SWITCH_MOD (1<<13)
65
66 /* macros */
67 #define MIN(a, b) ((a) < (b) ? (a) : (b))
68 #define MAX(a, b) ((a) < (b) ? (b) : (a))
69 #define LEN(a) (sizeof(a) / sizeof(a)[0])
70 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
71 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
72 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
73 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
74 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
75 #define ISDELIM(u) (BETWEEN(u, 0, 127) && strchr(worddelimiters, u) != NULL)
76 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
77 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
78 #define IS_SET(flag) ((term.mode & (flag)) != 0)
79 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_nsec-t2.tv_nsec)/1E6)
80 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
81
82 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
83 #define IS_TRUECOL(x) (1 << 24 & (x))
84 #define TRUERED(x) (((x) & 0xff0000) >> 8)
85 #define TRUEGREEN(x) (((x) & 0xff00))
86 #define TRUEBLUE(x) (((x) & 0xff) << 8)
87
88
89 enum glyph_attribute {
90 ATTR_NULL = 0,
91 ATTR_BOLD = 1 << 0,
92 ATTR_FAINT = 1 << 1,
93 ATTR_ITALIC = 1 << 2,
94 ATTR_UNDERLINE = 1 << 3,
95 ATTR_BLINK = 1 << 4,
96 ATTR_REVERSE = 1 << 5,
97 ATTR_INVISIBLE = 1 << 6,
98 ATTR_STRUCK = 1 << 7,
99 ATTR_WRAP = 1 << 8,
100 ATTR_WIDE = 1 << 9,
101 ATTR_WDUMMY = 1 << 10,
102 };
103
104 enum cursor_movement {
105 CURSOR_SAVE,
106 CURSOR_LOAD
107 };
108
109 enum cursor_state {
110 CURSOR_DEFAULT = 0,
111 CURSOR_WRAPNEXT = 1,
112 CURSOR_ORIGIN = 2
113 };
114
115 enum term_mode {
116 MODE_WRAP = 1 << 0,
117 MODE_INSERT = 1 << 1,
118 MODE_APPKEYPAD = 1 << 2,
119 MODE_ALTSCREEN = 1 << 3,
120 MODE_CRLF = 1 << 4,
121 MODE_MOUSEBTN = 1 << 5,
122 MODE_MOUSEMOTION = 1 << 6,
123 MODE_REVERSE = 1 << 7,
124 MODE_KBDLOCK = 1 << 8,
125 MODE_HIDE = 1 << 9,
126 MODE_ECHO = 1 << 10,
127 MODE_APPCURSOR = 1 << 11,
128 MODE_MOUSESGR = 1 << 12,
129 MODE_8BIT = 1 << 13,
130 MODE_BLINK = 1 << 14,
131 MODE_FBLINK = 1 << 15,
132 MODE_FOCUS = 1 << 16,
133 MODE_MOUSEX10 = 1 << 17,
134 MODE_MOUSEMANY = 1 << 18,
135 MODE_BRCKTPASTE = 1 << 19,
136 MODE_PRINT = 1 << 20,
137 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
138 |MODE_MOUSEMANY,
139 };
140
141 enum charset {
142 CS_GRAPHIC0,
143 CS_GRAPHIC1,
144 CS_UK,
145 CS_USA,
146 CS_MULTI,
147 CS_GER,
148 CS_FIN
149 };
150
151 enum escape_state {
152 ESC_START = 1,
153 ESC_CSI = 2,
154 ESC_STR = 4, /* DCS, OSC, PM, APC */
155 ESC_ALTCHARSET = 8,
156 ESC_STR_END = 16, /* a final string was encountered */
157 ESC_TEST = 32, /* Enter in test mode */
158 };
159
160 enum window_state {
161 WIN_VISIBLE = 1,
162 WIN_FOCUSED = 2
163 };
164
165 enum selection_type {
166 SEL_REGULAR = 1,
167 SEL_RECTANGULAR = 2
168 };
169
170 enum selection_snap {
171 SNAP_WORD = 1,
172 SNAP_LINE = 2
173 };
174
175 typedef unsigned char uchar;
176 typedef unsigned int uint;
177 typedef unsigned long ulong;
178 typedef unsigned short ushort;
179
180 typedef XftDraw *Draw;
181 typedef XftColor Color;
182
183 typedef struct {
184 long u; /* character code */
185 ushort mode; /* attribute flags */
186 ushort fg; /* foreground */
187 ushort bg; /* background */
188 } Glyph;
189
190 typedef Glyph *Line;
191
192 typedef struct {
193 Glyph attr; /* current char attributes */
194 int x;
195 int y;
196 char state;
197 } TCursor;
198
199 /* CSI Escape sequence structs */
200 /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
201 typedef struct {
202 char buf[ESC_BUF_SIZ]; /* raw string */
203 int len; /* raw string length */
204 char priv;
205 int arg[ESC_ARG_SIZ];
206 int narg; /* nb of args */
207 char mode[2];
208 } CSIEscape;
209
210 /* STR Escape sequence structs */
211 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
212 typedef struct {
213 char type; /* ESC type ... */
214 char buf[STR_BUF_SIZ]; /* raw string */
215 int len; /* raw string length */
216 char *args[STR_ARG_SIZ];
217 int narg; /* nb of args */
218 } STREscape;
219
220 /* Internal representation of the screen */
221 typedef struct {
222 int row; /* nb row */
223 int col; /* nb col */
224 Line *line; /* screen */
225 Line *alt; /* alternate screen */
226 bool *dirty; /* dirtyness of lines */
227 TCursor c; /* cursor */
228 int top; /* top scroll limit */
229 int bot; /* bottom scroll limit */
230 int mode; /* terminal mode flags */
231 int esc; /* escape state flags */
232 char trantbl[4]; /* charset table translation */
233 int charset; /* current charset */
234 int icharset; /* selected charset for sequence */
235 bool numlock; /* lock numbers in keyboard */
236 bool *tabs;
237 } Term;
238
239 /* Purely graphic info */
240 typedef struct {
241 Display *dpy;
242 Colormap cmap;
243 Window win;
244 Drawable buf;
245 Atom xembed, wmdeletewin, netwmname, netwmpid;
246 XIM xim;
247 XIC xic;
248 Draw draw;
249 Visual *vis;
250 XSetWindowAttributes attrs;
251 int scr;
252 bool isfixed; /* is fixed geometry? */
253 int l, t; /* left and top offset */
254 int gm; /* geometry mask */
255 int tw, th; /* tty width and height */
256 int w, h; /* window width and height */
257 int ch; /* char height */
258 int cw; /* char width */
259 char state; /* focus, redraw, visible */
260 int cursor; /* cursor style */
261 } XWindow;
262
263 typedef struct {
264 uint b;
265 uint mask;
266 char *s;
267 } Mousekey;
268
269 typedef struct {
270 KeySym k;
271 uint mask;
272 char *s;
273 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
274 signed char appkey; /* application keypad */
275 signed char appcursor; /* application cursor */
276 signed char crlf; /* crlf mode */
277 } Key;
278
279 typedef struct {
280 int mode;
281 int type;
282 int snap;
283 /*
284 * Selection variables:
285 * nb – normalized coordinates of the beginning of the selection
286 * ne – normalized coordinates of the end of the selection
287 * ob – original coordinates of the beginning of the selection
288 * oe – original coordinates of the end of the selection
289 */
290 struct {
291 int x, y;
292 } nb, ne, ob, oe;
293
294 char *primary, *clipboard;
295 Atom xtarget;
296 bool alt;
297 struct timespec tclick1;
298 struct timespec tclick2;
299 } Selection;
300
301 typedef union {
302 int i;
303 uint ui;
304 float f;
305 const void *v;
306 } Arg;
307
308 typedef struct {
309 uint mod;
310 KeySym keysym;
311 void (*func)(const Arg *);
312 const Arg arg;
313 } Shortcut;
314
315 /* function definitions used in config.h */
316 static void clipcopy(const Arg *);
317 static void clippaste(const Arg *);
318 static void numlock(const Arg *);
319 static void selpaste(const Arg *);
320 static void xzoom(const Arg *);
321 static void xzoomabs(const Arg *);
322 static void xzoomreset(const Arg *);
323 static void printsel(const Arg *);
324 static void printscreen(const Arg *) ;
325 static void toggleprinter(const Arg *);
326
327 /* Config.h for applying patches and the configuration. */
328 #include "config.h"
329
330 /* Font structure */
331 typedef struct {
332 int height;
333 int width;
334 int ascent;
335 int descent;
336 short lbearing;
337 short rbearing;
338 XftFont *match;
339 FcFontSet *set;
340 FcPattern *pattern;
341 } Font;
342
343 /* Drawing Context */
344 typedef struct {
345 Color col[MAX(LEN(colorname), 256)];
346 Font font, bfont, ifont, ibfont;
347 GC gc;
348 } DC;
349
350 static void die(const char *, ...);
351 static void draw(void);
352 static void redraw(void);
353 static void drawregion(int, int, int, int);
354 static void execsh(void);
355 static void stty(void);
356 static void sigchld(int);
357 static void run(void);
358
359 static void csidump(void);
360 static void csihandle(void);
361 static void csiparse(void);
362 static void csireset(void);
363 static int eschandle(uchar);
364 static void strdump(void);
365 static void strhandle(void);
366 static void strparse(void);
367 static void strreset(void);
368
369 static int tattrset(int);
370 static void tprinter(char *, size_t);
371 static void tdumpsel(void);
372 static void tdumpline(int);
373 static void tdump(void);
374 static void tclearregion(int, int, int, int);
375 static void tcursor(int);
376 static void tdeletechar(int);
377 static void tdeleteline(int);
378 static void tinsertblank(int);
379 static void tinsertblankline(int);
380 static int tlinelen(int);
381 static void tmoveto(int, int);
382 static void tmoveato(int, int);
383 static void tnew(int, int);
384 static void tnewline(int);
385 static void tputtab(int);
386 static void tputc(long);
387 static void treset(void);
388 static void tresize(int, int);
389 static void tscrollup(int, int);
390 static void tscrolldown(int, int);
391 static void tsetattr(int *, int);
392 static void tsetchar(long, Glyph *, int, int);
393 static void tsetscroll(int, int);
394 static void tswapscreen(void);
395 static void tsetdirt(int, int);
396 static void tsetdirtattr(int);
397 static void tsetmode(bool, bool, int *, int);
398 static void tfulldirt(void);
399 static void techo(long);
400 static void tcontrolcode(uchar );
401 static void tdectest(char );
402 static int32_t tdefcolor(int *, int *, int);
403 static void tdeftran(char);
404 static inline bool match(uint, uint);
405 static void ttynew(void);
406 static void ttyread(void);
407 static void ttyresize(void);
408 static void ttysend(char *, size_t);
409 static void ttywrite(const char *, size_t);
410 static void tstrsequence(uchar);
411
412 static inline ushort sixd_to_16bit(int);
413 static void xdraws(char *, Glyph, int, int, int, int);
414 static void xdrawglyph(Glyph, int, int);
415 static void xhints(void);
416 static void xclear(int, int, int, int);
417 static void xdrawcursor(void);
418 static void xinit(void);
419 static void xloadcols(void);
420 static int xsetcolorname(int, const char *);
421 static int xgeommasktogravity(int);
422 static int xloadfont(Font *, FcPattern *);
423 static void xloadfonts(char *, double);
424 static void xsettitle(char *);
425 static void xresettitle(void);
426 static void xsetpointermotion(int);
427 static void xseturgency(int);
428 static void xsetsel(char *, Time);
429 static void xtermclear(int, int, int, int);
430 static void xunloadfont(Font *);
431 static void xunloadfonts(void);
432 static void xresize(int, int);
433
434 static void expose(XEvent *);
435 static void visibility(XEvent *);
436 static void unmap(XEvent *);
437 static char *kmap(KeySym, uint);
438 static void kpress(XEvent *);
439 static void cmessage(XEvent *);
440 static void cresize(int, int);
441 static void resize(XEvent *);
442 static void focus(XEvent *);
443 static void brelease(XEvent *);
444 static void bpress(XEvent *);
445 static void bmotion(XEvent *);
446 static void selnotify(XEvent *);
447 static void selclear(XEvent *);
448 static void selrequest(XEvent *);
449
450 static void selinit(void);
451 static void selnormalize(void);
452 static inline bool selected(int, int);
453 static char *getsel(void);
454 static void selcopy(Time);
455 static void selscroll(int, int);
456 static void selsnap(int, int *, int *, int);
457 static int x2col(int);
458 static int y2row(int);
459 static void getbuttoninfo(XEvent *);
460 static void mousereport(XEvent *);
461
462 static size_t utf8decode(char *, long *, size_t);
463 static long utf8decodebyte(char, size_t *);
464 static size_t utf8encode(long, char *);
465 static char utf8encodebyte(long, size_t);
466 static size_t utf8validate(long *, size_t);
467
468 static ssize_t xwrite(int, const char *, size_t);
469 static void *xmalloc(size_t);
470 static void *xrealloc(void *, size_t);
471 static char *xstrdup(char *);
472
473 static void usage(void);
474
475 static void (*handler[LASTEvent])(XEvent *) = {
476 [KeyPress] = kpress,
477 [ClientMessage] = cmessage,
478 [ConfigureNotify] = resize,
479 [VisibilityNotify] = visibility,
480 [UnmapNotify] = unmap,
481 [Expose] = expose,
482 [FocusIn] = focus,
483 [FocusOut] = focus,
484 [MotionNotify] = bmotion,
485 [ButtonPress] = bpress,
486 [ButtonRelease] = brelease,
487 /*
488 * Uncomment if you want the selection to disappear when you select something
489 * different in another window.
490 */
491 /* [SelectionClear] = selclear, */
492 [SelectionNotify] = selnotify,
493 [SelectionRequest] = selrequest,
494 };
495
496 /* Globals */
497 static DC dc;
498 static XWindow xw;
499 static Term term;
500 static CSIEscape csiescseq;
501 static STREscape strescseq;
502 static int cmdfd;
503 static pid_t pid;
504 static Selection sel;
505 static int iofd = STDOUT_FILENO;
506 static char **opt_cmd = NULL;
507 static char *opt_io = NULL;
508 static char *opt_title = NULL;
509 static char *opt_embed = NULL;
510 static char *opt_class = NULL;
511 static char *opt_font = NULL;
512 static char *opt_line = NULL;
513 static int oldbutton = 3; /* button event on startup: 3 = release */
514
515 static char *usedfont = NULL;
516 static double usedfontsize = 0;
517 static double defaultfontsize = 0;
518
519 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
520 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
521 static long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
522 static long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
523
524 /* Font Ring Cache */
525 enum {
526 FRC_NORMAL,
527 FRC_ITALIC,
528 FRC_BOLD,
529 FRC_ITALICBOLD
530 };
531
532 typedef struct {
533 XftFont *font;
534 int flags;
535 long unicodep;
536 } Fontcache;
537
538 /* Fontcache is an array now. A new font will be appended to the array. */
539 static Fontcache frc[16];
540 static int frclen = 0;
541
542 ssize_t
543 xwrite(int fd, const char *s, size_t len) {
544 size_t aux = len;
545
546 while(len > 0) {
547 ssize_t r = write(fd, s, len);
548 if(r < 0)
549 return r;
550 len -= r;
551 s += r;
552 }
553 return aux;
554 }
555
556 void *
557 xmalloc(size_t len) {
558 void *p = malloc(len);
559
560 if(!p)
561 die("Out of memory\n");
562
563 return p;
564 }
565
566 void *
567 xrealloc(void *p, size_t len) {
568 if((p = realloc(p, len)) == NULL)
569 die("Out of memory\n");
570
571 return p;
572 }
573
574 char *
575 xstrdup(char *s) {
576 if((s = strdup(s)) == NULL)
577 die("Out of memory\n");
578
579 return s;
580 }
581
582 size_t
583 utf8decode(char *c, long *u, size_t clen) {
584 size_t i, j, len, type;
585 long udecoded;
586
587 *u = UTF_INVALID;
588 if(!clen)
589 return 0;
590 udecoded = utf8decodebyte(c[0], &len);
591 if(!BETWEEN(len, 1, UTF_SIZ))
592 return 1;
593 for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
594 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
595 if(type != 0)
596 return j;
597 }
598 if(j < len)
599 return 0;
600 *u = udecoded;
601 utf8validate(u, len);
602 return len;
603 }
604
605 long
606 utf8decodebyte(char c, size_t *i) {
607 for(*i = 0; *i < LEN(utfmask); ++(*i))
608 if(((uchar)c & utfmask[*i]) == utfbyte[*i])
609 return (uchar)c & ~utfmask[*i];
610 return 0;
611 }
612
613 size_t
614 utf8encode(long u, char *c) {
615 size_t len, i;
616
617 len = utf8validate(&u, 0);
618 if(len > UTF_SIZ)
619 return 0;
620 for(i = len - 1; i != 0; --i) {
621 c[i] = utf8encodebyte(u, 0);
622 u >>= 6;
623 }
624 c[0] = utf8encodebyte(u, len);
625 return len;
626 }
627
628 char
629 utf8encodebyte(long u, size_t i) {
630 return utfbyte[i] | (u & ~utfmask[i]);
631 }
632
633 size_t
634 utf8validate(long *u, size_t i) {
635 if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
636 *u = UTF_INVALID;
637 for(i = 1; *u > utfmax[i]; ++i)
638 ;
639 return i;
640 }
641
642 void
643 selinit(void) {
644 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
645 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
646 sel.mode = 0;
647 sel.ob.x = -1;
648 sel.primary = NULL;
649 sel.clipboard = NULL;
650 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
651 if(sel.xtarget == None)
652 sel.xtarget = XA_STRING;
653 }
654
655 int
656 x2col(int x) {
657 x -= borderpx;
658 x /= xw.cw;
659
660 return LIMIT(x, 0, term.col-1);
661 }
662
663 int
664 y2row(int y) {
665 y -= borderpx;
666 y /= xw.ch;
667
668 return LIMIT(y, 0, term.row-1);
669 }
670
671 int
672 tlinelen(int y) {
673 int i = term.col;
674
675 if(term.line[y][i - 1].mode & ATTR_WRAP)
676 return i;
677
678 while(i > 0 && term.line[y][i - 1].u == ' ')
679 --i;
680
681 return i;
682 }
683
684 void
685 selnormalize(void) {
686 int i;
687
688 if(sel.ob.y == sel.oe.y || sel.type == SEL_RECTANGULAR) {
689 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
690 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
691 } else {
692 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
693 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
694 }
695 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
696 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
697
698 selsnap(sel.snap, &sel.nb.x, &sel.nb.y, -1);
699 selsnap(sel.snap, &sel.ne.x, &sel.ne.y, +1);
700
701 /* expand selection over line breaks */
702 if (sel.type == SEL_RECTANGULAR)
703 return;
704 i = tlinelen(sel.nb.y);
705 if (i < sel.nb.x)
706 sel.nb.x = i;
707 if (tlinelen(sel.ne.y) <= sel.ne.x)
708 sel.ne.x = term.col - 1;
709 }
710
711 bool
712 selected(int x, int y) {
713 if(sel.type == SEL_RECTANGULAR)
714 return BETWEEN(y, sel.nb.y, sel.ne.y)
715 && BETWEEN(x, sel.nb.x, sel.ne.x);
716
717 return BETWEEN(y, sel.nb.y, sel.ne.y)
718 && (y != sel.nb.y || x >= sel.nb.x)
719 && (y != sel.ne.y || x <= sel.ne.x);
720 }
721
722 void
723 selsnap(int mode, int *x, int *y, int direction) {
724 int newx, newy, xt, yt;
725 bool delim, prevdelim;
726 Glyph *gp, *prevgp;
727
728 switch(mode) {
729 case SNAP_WORD:
730 /*
731 * Snap around if the word wraps around at the end or
732 * beginning of a line.
733 */
734 prevgp = &term.line[*y][*x];
735 prevdelim = ISDELIM(prevgp->u);
736 for(;;) {
737 newx = *x + direction;
738 newy = *y;
739 if(!BETWEEN(newx, 0, term.col - 1)) {
740 newy += direction;
741 newx = (newx + term.col) % term.col;
742 if (!BETWEEN(newy, 0, term.row - 1))
743 break;
744
745 if(direction > 0)
746 yt = *y, xt = *x;
747 else
748 yt = newy, xt = newx;
749 if(!(term.line[yt][xt].mode & ATTR_WRAP))
750 break;
751 }
752
753 if (newx >= tlinelen(newy))
754 break;
755
756 gp = &term.line[newy][newx];
757 delim = ISDELIM(gp->u);
758 if(!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
759 || (delim && gp->u != prevgp->u)))
760 break;
761
762 *x = newx;
763 *y = newy;
764 prevgp = gp;
765 prevdelim = delim;
766 }
767 break;
768 case SNAP_LINE:
769 /*
770 * Snap around if the the previous line or the current one
771 * has set ATTR_WRAP at its end. Then the whole next or
772 * previous line will be selected.
773 */
774 *x = (direction < 0) ? 0 : term.col - 1;
775 if(direction < 0 && *y > 0) {
776 for(; *y > 0; *y += direction) {
777 if(!(term.line[*y-1][term.col-1].mode
778 & ATTR_WRAP)) {
779 break;
780 }
781 }
782 } else if(direction > 0 && *y < term.row-1) {
783 for(; *y < term.row; *y += direction) {
784 if(!(term.line[*y][term.col-1].mode
785 & ATTR_WRAP)) {
786 break;
787 }
788 }
789 }
790 break;
791 }
792 }
793
794 void
795 getbuttoninfo(XEvent *e) {
796 int type;
797 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
798
799 sel.alt = IS_SET(MODE_ALTSCREEN);
800
801 sel.oe.x = x2col(e->xbutton.x);
802 sel.oe.y = y2row(e->xbutton.y);
803 selnormalize();
804
805 sel.type = SEL_REGULAR;
806 for(type = 1; type < LEN(selmasks); ++type) {
807 if(match(selmasks[type], state)) {
808 sel.type = type;
809 break;
810 }
811 }
812 }
813
814 void
815 mousereport(XEvent *e) {
816 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
817 button = e->xbutton.button, state = e->xbutton.state,
818 len;
819 char buf[40];
820 static int ox, oy;
821
822 /* from urxvt */
823 if(e->xbutton.type == MotionNotify) {
824 if(x == ox && y == oy)
825 return;
826 if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
827 return;
828 /* MOUSE_MOTION: no reporting if no button is pressed */
829 if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
830 return;
831
832 button = oldbutton + 32;
833 ox = x;
834 oy = y;
835 } else {
836 if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
837 button = 3;
838 } else {
839 button -= Button1;
840 if(button >= 3)
841 button += 64 - 3;
842 }
843 if(e->xbutton.type == ButtonPress) {
844 oldbutton = button;
845 ox = x;
846 oy = y;
847 } else if(e->xbutton.type == ButtonRelease) {
848 oldbutton = 3;
849 /* MODE_MOUSEX10: no button release reporting */
850 if(IS_SET(MODE_MOUSEX10))
851 return;
852 if (button == 64 || button == 65)
853 return;
854 }
855 }
856
857 if(!IS_SET(MODE_MOUSEX10)) {
858 button += (state & ShiftMask ? 4 : 0)
859 + (state & Mod4Mask ? 8 : 0)
860 + (state & ControlMask ? 16 : 0);
861 }
862
863 len = 0;
864 if(IS_SET(MODE_MOUSESGR)) {
865 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
866 button, x+1, y+1,
867 e->xbutton.type == ButtonRelease ? 'm' : 'M');
868 } else if(x < 223 && y < 223) {
869 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
870 32+button, 32+x+1, 32+y+1);
871 } else {
872 return;
873 }
874
875 ttywrite(buf, len);
876 }
877
878 void
879 bpress(XEvent *e) {
880 struct timespec now;
881 Mousekey *mk;
882
883 if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
884 mousereport(e);
885 return;
886 }
887
888 for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
889 if(e->xbutton.button == mk->b
890 && match(mk->mask, e->xbutton.state)) {
891 ttysend(mk->s, strlen(mk->s));
892 return;
893 }
894 }
895
896 if(e->xbutton.button == Button1) {
897 clock_gettime(CLOCK_MONOTONIC, &now);
898
899 /* Clear previous selection, logically and visually. */
900 selclear(NULL);
901 sel.mode = 1;
902 sel.type = SEL_REGULAR;
903 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
904 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
905
906 /*
907 * If the user clicks below predefined timeouts specific
908 * snapping behaviour is exposed.
909 */
910 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
911 sel.snap = SNAP_LINE;
912 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
913 sel.snap = SNAP_WORD;
914 } else {
915 sel.snap = 0;
916 }
917 selnormalize();
918
919 /*
920 * Draw selection, unless it's regular and we don't want to
921 * make clicks visible
922 */
923 if(sel.snap != 0) {
924 sel.mode++;
925 tsetdirt(sel.nb.y, sel.ne.y);
926 }
927 sel.tclick2 = sel.tclick1;
928 sel.tclick1 = now;
929 }
930 }
931
932 char *
933 getsel(void) {
934 char *str, *ptr;
935 int y, bufsize, lastx, linelen;
936 Glyph *gp, *last;
937
938 if(sel.ob.x == -1)
939 return NULL;
940
941 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
942 ptr = str = xmalloc(bufsize);
943
944 /* append every set & selected glyph to the selection */
945 for(y = sel.nb.y; y <= sel.ne.y; y++) {
946 linelen = tlinelen(y);
947
948 if(sel.type == SEL_RECTANGULAR) {
949 gp = &term.line[y][sel.nb.x];
950 lastx = sel.ne.x;
951 } else {
952 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
953 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
954 }
955 last = &term.line[y][MIN(lastx, linelen-1)];
956 while(last >= gp && last->u == ' ')
957 --last;
958
959 for( ; gp <= last; ++gp) {
960 if(gp->mode & ATTR_WDUMMY)
961 continue;
962
963 ptr += utf8encode(gp->u, ptr);
964 }
965
966 /*
967 * Copy and pasting of line endings is inconsistent
968 * in the inconsistent terminal and GUI world.
969 * The best solution seems like to produce '\n' when
970 * something is copied from st and convert '\n' to
971 * '\r', when something to be pasted is received by
972 * st.
973 * FIXME: Fix the computer world.
974 */
975 if((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
976 *ptr++ = '\n';
977 }
978 *ptr = 0;
979 return str;
980 }
981
982 void
983 selcopy(Time t) {
984 xsetsel(getsel(), t);
985 }
986
987 void
988 selnotify(XEvent *e) {
989 ulong nitems, ofs, rem;
990 int format;
991 uchar *data, *last, *repl;
992 Atom type;
993 XSelectionEvent *xsev;
994
995 ofs = 0;
996 xsev = &e->xselection;
997 if (xsev->property == None)
998 return;
999 do {
1000 if(XGetWindowProperty(xw.dpy, xw.win, xsev->property, ofs,
1001 BUFSIZ/4, False, AnyPropertyType,
1002 &type, &format, &nitems, &rem,
1003 &data)) {
1004 fprintf(stderr, "Clipboard allocation failed\n");
1005 return;
1006 }
1007
1008 /*
1009 * As seen in getsel:
1010 * Line endings are inconsistent in the terminal and GUI world
1011 * copy and pasting. When receiving some selection data,
1012 * replace all '\n' with '\r'.
1013 * FIXME: Fix the computer world.
1014 */
1015 repl = data;
1016 last = data + nitems * format / 8;
1017 while((repl = memchr(repl, '\n', last - repl))) {
1018 *repl++ = '\r';
1019 }
1020
1021 if(IS_SET(MODE_BRCKTPASTE))
1022 ttywrite("\033[200~", 6);
1023 ttysend((char *)data, nitems * format / 8);
1024 if(IS_SET(MODE_BRCKTPASTE))
1025 ttywrite("\033[201~", 6);
1026 XFree(data);
1027 /* number of 32-bit chunks returned */
1028 ofs += nitems * format / 32;
1029 } while(rem > 0);
1030 }
1031
1032 void
1033 selpaste(const Arg *dummy) {
1034 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1035 xw.win, CurrentTime);
1036 }
1037
1038 void
1039 clipcopy(const Arg *dummy) {
1040 Atom clipboard;
1041
1042 if(sel.clipboard != NULL)
1043 free(sel.clipboard);
1044
1045 if(sel.primary != NULL) {
1046 sel.clipboard = xstrdup(sel.primary);
1047 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1048 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1049 }
1050 }
1051
1052 void
1053 clippaste(const Arg *dummy) {
1054 Atom clipboard;
1055
1056 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1057 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1058 xw.win, CurrentTime);
1059 }
1060
1061 void
1062 selclear(XEvent *e) {
1063 if(sel.ob.x == -1)
1064 return;
1065 sel.ob.x = -1;
1066 tsetdirt(sel.nb.y, sel.ne.y);
1067 }
1068
1069 void
1070 selrequest(XEvent *e) {
1071 XSelectionRequestEvent *xsre;
1072 XSelectionEvent xev;
1073 Atom xa_targets, string, clipboard;
1074 char *seltext;
1075
1076 xsre = (XSelectionRequestEvent *) e;
1077 xev.type = SelectionNotify;
1078 xev.requestor = xsre->requestor;
1079 xev.selection = xsre->selection;
1080 xev.target = xsre->target;
1081 xev.time = xsre->time;
1082 if (xsre->property == None)
1083 xsre->property = xsre->target;
1084
1085 /* reject */
1086 xev.property = None;
1087
1088 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1089 if(xsre->target == xa_targets) {
1090 /* respond with the supported type */
1091 string = sel.xtarget;
1092 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1093 XA_ATOM, 32, PropModeReplace,
1094 (uchar *) &string, 1);
1095 xev.property = xsre->property;
1096 } else if(xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1097 /*
1098 * xith XA_STRING non ascii characters may be incorrect in the
1099 * requestor. It is not our problem, use utf8.
1100 */
1101 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1102 if(xsre->selection == XA_PRIMARY) {
1103 seltext = sel.primary;
1104 } else if(xsre->selection == clipboard) {
1105 seltext = sel.clipboard;
1106 } else {
1107 fprintf(stderr,
1108 "Unhandled clipboard selection 0x%lx\n",
1109 xsre->selection);
1110 return;
1111 }
1112 if(seltext != NULL) {
1113 XChangeProperty(xsre->display, xsre->requestor,
1114 xsre->property, xsre->target,
1115 8, PropModeReplace,
1116 (uchar *)seltext, strlen(seltext));
1117 xev.property = xsre->property;
1118 }
1119 }
1120
1121 /* all done, send a notification to the listener */
1122 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
1123 fprintf(stderr, "Error sending SelectionNotify event\n");
1124 }
1125
1126 void
1127 xsetsel(char *str, Time t) {
1128 free(sel.primary);
1129 sel.primary = str;
1130
1131 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1132 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1133 selclear(0);
1134 }
1135
1136 void
1137 brelease(XEvent *e) {
1138 if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1139 mousereport(e);
1140 return;
1141 }
1142
1143 if(e->xbutton.button == Button2) {
1144 selpaste(NULL);
1145 } else if(e->xbutton.button == Button1) {
1146 if(sel.mode < 2) {
1147 selclear(NULL);
1148 } else {
1149 getbuttoninfo(e);
1150 selcopy(e->xbutton.time);
1151 }
1152 sel.mode = 0;
1153 tsetdirt(sel.nb.y, sel.ne.y);
1154 }
1155 }
1156
1157 void
1158 bmotion(XEvent *e) {
1159 int oldey, oldex, oldsby, oldsey;
1160
1161 if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1162 mousereport(e);
1163 return;
1164 }
1165
1166 if(!sel.mode)
1167 return;
1168
1169 sel.mode++;
1170 oldey = sel.oe.y;
1171 oldex = sel.oe.x;
1172 oldsby = sel.nb.y;
1173 oldsey = sel.ne.y;
1174 getbuttoninfo(e);
1175
1176 if(oldey != sel.oe.y || oldex != sel.oe.x)
1177 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1178 }
1179
1180 void
1181 die(const char *errstr, ...) {
1182 va_list ap;
1183
1184 va_start(ap, errstr);
1185 vfprintf(stderr, errstr, ap);
1186 va_end(ap);
1187 exit(EXIT_FAILURE);
1188 }
1189
1190 void
1191 execsh(void) {
1192 char **args, *sh, *prog;
1193 const struct passwd *pw;
1194 char buf[sizeof(long) * 8 + 1];
1195
1196 errno = 0;
1197 if((pw = getpwuid(getuid())) == NULL) {
1198 if(errno)
1199 die("getpwuid:%s\n", strerror(errno));
1200 else
1201 die("who are you?\n");
1202 }
1203
1204 if (!(sh = getenv("SHELL"))) {
1205 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1206 }
1207
1208 if(opt_cmd)
1209 prog = opt_cmd[0];
1210 else if(utmp)
1211 prog = utmp;
1212 else
1213 prog = sh;
1214 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1215
1216 snprintf(buf, sizeof(buf), "%lu", xw.win);
1217
1218 unsetenv("COLUMNS");
1219 unsetenv("LINES");
1220 unsetenv("TERMCAP");
1221 setenv("LOGNAME", pw->pw_name, 1);
1222 setenv("USER", pw->pw_name, 1);
1223 setenv("SHELL", sh, 1);
1224 setenv("HOME", pw->pw_dir, 1);
1225 setenv("TERM", termname, 1);
1226 setenv("WINDOWID", buf, 1);
1227
1228 signal(SIGCHLD, SIG_DFL);
1229 signal(SIGHUP, SIG_DFL);
1230 signal(SIGINT, SIG_DFL);
1231 signal(SIGQUIT, SIG_DFL);
1232 signal(SIGTERM, SIG_DFL);
1233 signal(SIGALRM, SIG_DFL);
1234
1235 execvp(prog, args);
1236 _exit(EXIT_FAILURE);
1237 }
1238
1239 void
1240 sigchld(int a) {
1241 int stat, ret;
1242
1243 if(waitpid(pid, &stat, 0) < 0)
1244 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1245
1246 ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE;
1247 if (ret != EXIT_SUCCESS)
1248 die("child finished with error '%d'\n", stat);
1249 exit(EXIT_SUCCESS);
1250 }
1251
1252
1253 void
1254 stty(void)
1255 {
1256 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1257 size_t n, siz;
1258
1259 if((n = strlen(stty_args)) > sizeof(cmd)-1)
1260 die("incorrect stty parameters\n");
1261 memcpy(cmd, stty_args, n);
1262 q = cmd + n;
1263 siz = sizeof(cmd) - n;
1264 for(p = opt_cmd; p && (s = *p); ++p) {
1265 if((n = strlen(s)) > siz-1)
1266 die("stty parameter length too long\n");
1267 *q++ = ' ';
1268 q = memcpy(q, s, n);
1269 q += n;
1270 siz-= n + 1;
1271 }
1272 *q = '\0';
1273 if (system(cmd) != 0)
1274 perror("Couldn't call stty");
1275 }
1276
1277 void
1278 ttynew(void) {
1279 int m, s;
1280 struct winsize w = {term.row, term.col, 0, 0};
1281
1282 if(opt_io) {
1283 term.mode |= MODE_PRINT;
1284 iofd = (!strcmp(opt_io, "-")) ?
1285 STDOUT_FILENO :
1286 open(opt_io, O_WRONLY | O_CREAT, 0666);
1287 if(iofd < 0) {
1288 fprintf(stderr, "Error opening %s:%s\n",
1289 opt_io, strerror(errno));
1290 }
1291 }
1292
1293 if (opt_line) {
1294 if((cmdfd = open(opt_line, O_RDWR)) < 0)
1295 die("open line failed: %s\n", strerror(errno));
1296 close(STDIN_FILENO);
1297 dup(cmdfd);
1298 stty();
1299 return;
1300 }
1301
1302 /* seems to work fine on linux, openbsd and freebsd */
1303 if(openpty(&m, &s, NULL, NULL, &w) < 0)
1304 die("openpty failed: %s\n", strerror(errno));
1305
1306 switch(pid = fork()) {
1307 case -1:
1308 die("fork failed\n");
1309 break;
1310 case 0:
1311 close(iofd);
1312 setsid(); /* create a new process group */
1313 dup2(s, STDIN_FILENO);
1314 dup2(s, STDOUT_FILENO);
1315 dup2(s, STDERR_FILENO);
1316 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1317 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1318 close(s);
1319 close(m);
1320 execsh();
1321 break;
1322 default:
1323 close(s);
1324 cmdfd = m;
1325 signal(SIGCHLD, sigchld);
1326 break;
1327 }
1328 }
1329
1330 void
1331 ttyread(void) {
1332 static char buf[BUFSIZ];
1333 static int buflen = 0;
1334 char *ptr;
1335 int charsize; /* size of utf8 char in bytes */
1336 long unicodep;
1337 int ret;
1338
1339 /* append read bytes to unprocessed bytes */
1340 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1341 die("Couldn't read from shell: %s\n", strerror(errno));
1342
1343 /* process every complete utf8 char */
1344 buflen += ret;
1345 ptr = buf;
1346 while((charsize = utf8decode(ptr, &unicodep, buflen))) {
1347 tputc(unicodep);
1348 ptr += charsize;
1349 buflen -= charsize;
1350 }
1351
1352 /* keep any uncomplete utf8 char for the next call */
1353 memmove(buf, ptr, buflen);
1354 }
1355
1356 void
1357 ttywrite(const char *s, size_t n) {
1358 if(xwrite(cmdfd, s, n) == -1)
1359 die("write error on tty: %s\n", strerror(errno));
1360 }
1361
1362 void
1363 ttysend(char *s, size_t n) {
1364 int len;
1365 long u;
1366
1367 ttywrite(s, n);
1368 if(IS_SET(MODE_ECHO))
1369 while((len = utf8decode(s, &u, n)) > 0) {
1370 techo(u);
1371 n -= len;
1372 s += len;
1373 }
1374 }
1375
1376 void
1377 ttyresize(void) {
1378 struct winsize w;
1379
1380 w.ws_row = term.row;
1381 w.ws_col = term.col;
1382 w.ws_xpixel = xw.tw;
1383 w.ws_ypixel = xw.th;
1384 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1385 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1386 }
1387
1388 int
1389 tattrset(int attr) {
1390 int i, j;
1391
1392 for(i = 0; i < term.row-1; i++) {
1393 for(j = 0; j < term.col-1; j++) {
1394 if(term.line[i][j].mode & attr)
1395 return 1;
1396 }
1397 }
1398
1399 return 0;
1400 }
1401
1402 void
1403 tsetdirt(int top, int bot) {
1404 int i;
1405
1406 LIMIT(top, 0, term.row-1);
1407 LIMIT(bot, 0, term.row-1);
1408
1409 for(i = top; i <= bot; i++)
1410 term.dirty[i] = 1;
1411 }
1412
1413 void
1414 tsetdirtattr(int attr) {
1415 int i, j;
1416
1417 for(i = 0; i < term.row-1; i++) {
1418 for(j = 0; j < term.col-1; j++) {
1419 if(term.line[i][j].mode & attr) {
1420 tsetdirt(i, i);
1421 break;
1422 }
1423 }
1424 }
1425 }
1426
1427 void
1428 tfulldirt(void) {
1429 tsetdirt(0, term.row-1);
1430 }
1431
1432 void
1433 tcursor(int mode) {
1434 static TCursor c[2];
1435 bool alt = IS_SET(MODE_ALTSCREEN);
1436
1437 if(mode == CURSOR_SAVE) {
1438 c[alt] = term.c;
1439 } else if(mode == CURSOR_LOAD) {
1440 term.c = c[alt];
1441 tmoveto(c[alt].x, c[alt].y);
1442 }
1443 }
1444
1445 void
1446 treset(void) {
1447 uint i;
1448
1449 term.c = (TCursor){{
1450 .mode = ATTR_NULL,
1451 .fg = defaultfg,
1452 .bg = defaultbg
1453 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1454
1455 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1456 for(i = tabspaces; i < term.col; i += tabspaces)
1457 term.tabs[i] = 1;
1458 term.top = 0;
1459 term.bot = term.row - 1;
1460 term.mode = MODE_WRAP;
1461 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1462 term.charset = 0;
1463
1464 for(i = 0; i < 2; i++) {
1465 tmoveto(0, 0);
1466 tcursor(CURSOR_SAVE);
1467 tclearregion(0, 0, term.col-1, term.row-1);
1468 tswapscreen();
1469 }
1470 }
1471
1472 void
1473 tnew(int col, int row) {
1474 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1475 tresize(col, row);
1476 term.numlock = 1;
1477
1478 treset();
1479 }
1480
1481 void
1482 tswapscreen(void) {
1483 Line *tmp = term.line;
1484
1485 term.line = term.alt;
1486 term.alt = tmp;
1487 term.mode ^= MODE_ALTSCREEN;
1488 tfulldirt();
1489 }
1490
1491 void
1492 tscrolldown(int orig, int n) {
1493 int i;
1494 Line temp;
1495
1496 LIMIT(n, 0, term.bot-orig+1);
1497
1498 tsetdirt(orig, term.bot-n);
1499 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1500
1501 for(i = term.bot; i >= orig+n; i--) {
1502 temp = term.line[i];
1503 term.line[i] = term.line[i-n];
1504 term.line[i-n] = temp;
1505 }
1506
1507 selscroll(orig, n);
1508 }
1509
1510 void
1511 tscrollup(int orig, int n) {
1512 int i;
1513 Line temp;
1514
1515 LIMIT(n, 0, term.bot-orig+1);
1516
1517 tclearregion(0, orig, term.col-1, orig+n-1);
1518 tsetdirt(orig+n, term.bot);
1519
1520 for(i = orig; i <= term.bot-n; i++) {
1521 temp = term.line[i];
1522 term.line[i] = term.line[i+n];
1523 term.line[i+n] = temp;
1524 }
1525
1526 selscroll(orig, -n);
1527 }
1528
1529 void
1530 selscroll(int orig, int n) {
1531 if(sel.ob.x == -1)
1532 return;
1533
1534 if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1535 if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1536 selclear(NULL);
1537 return;
1538 }
1539 if(sel.type == SEL_RECTANGULAR) {
1540 if(sel.ob.y < term.top)
1541 sel.ob.y = term.top;
1542 if(sel.oe.y > term.bot)
1543 sel.oe.y = term.bot;
1544 } else {
1545 if(sel.ob.y < term.top) {
1546 sel.ob.y = term.top;
1547 sel.ob.x = 0;
1548 }
1549 if(sel.oe.y > term.bot) {
1550 sel.oe.y = term.bot;
1551 sel.oe.x = term.col;
1552 }
1553 }
1554 selnormalize();
1555 }
1556 }
1557
1558 void
1559 tnewline(int first_col) {
1560 int y = term.c.y;
1561
1562 if(y == term.bot) {
1563 tscrollup(term.top, 1);
1564 } else {
1565 y++;
1566 }
1567 tmoveto(first_col ? 0 : term.c.x, y);
1568 }
1569
1570 void
1571 csiparse(void) {
1572 char *p = csiescseq.buf, *np;
1573 long int v;
1574
1575 csiescseq.narg = 0;
1576 if(*p == '?') {
1577 csiescseq.priv = 1;
1578 p++;
1579 }
1580
1581 csiescseq.buf[csiescseq.len] = '\0';
1582 while(p < csiescseq.buf+csiescseq.len) {
1583 np = NULL;
1584 v = strtol(p, &np, 10);
1585 if(np == p)
1586 v = 0;
1587 if(v == LONG_MAX || v == LONG_MIN)
1588 v = -1;
1589 csiescseq.arg[csiescseq.narg++] = v;
1590 p = np;
1591 if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1592 break;
1593 p++;
1594 }
1595 csiescseq.mode[0] = *p++;
1596 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1597 }
1598
1599 /* for absolute user moves, when decom is set */
1600 void
1601 tmoveato(int x, int y) {
1602 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1603 }
1604
1605 void
1606 tmoveto(int x, int y) {
1607 int miny, maxy;
1608
1609 if(term.c.state & CURSOR_ORIGIN) {
1610 miny = term.top;
1611 maxy = term.bot;
1612 } else {
1613 miny = 0;
1614 maxy = term.row - 1;
1615 }
1616 term.c.state &= ~CURSOR_WRAPNEXT;
1617 term.c.x = LIMIT(x, 0, term.col-1);
1618 term.c.y = LIMIT(y, miny, maxy);
1619 }
1620
1621 void
1622 tsetchar(long u, Glyph *attr, int x, int y) {
1623 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1624 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1625 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1626 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1627 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1628 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1629 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1630 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1631 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1632 };
1633
1634 /*
1635 * The table is proudly stolen from rxvt.
1636 */
1637 if(term.trantbl[term.charset] == CS_GRAPHIC0 &&
1638 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1639 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1640
1641 if(term.line[y][x].mode & ATTR_WIDE) {
1642 if(x+1 < term.col) {
1643 term.line[y][x+1].u = ' ';
1644 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1645 }
1646 } else if(term.line[y][x].mode & ATTR_WDUMMY) {
1647 term.line[y][x-1].u = ' ';
1648 term.line[y][x-1].mode &= ~ATTR_WIDE;
1649 }
1650
1651 term.dirty[y] = 1;
1652 term.line[y][x] = *attr;
1653 term.line[y][x].u = u;
1654 }
1655
1656 void
1657 tclearregion(int x1, int y1, int x2, int y2) {
1658 int x, y, temp;
1659 Glyph *gp;
1660
1661 if(x1 > x2)
1662 temp = x1, x1 = x2, x2 = temp;
1663 if(y1 > y2)
1664 temp = y1, y1 = y2, y2 = temp;
1665
1666 LIMIT(x1, 0, term.col-1);
1667 LIMIT(x2, 0, term.col-1);
1668 LIMIT(y1, 0, term.row-1);
1669 LIMIT(y2, 0, term.row-1);
1670
1671 for(y = y1; y <= y2; y++) {
1672 term.dirty[y] = 1;
1673 for(x = x1; x <= x2; x++) {
1674 gp = &term.line[y][x];
1675 if(selected(x, y))
1676 selclear(NULL);
1677 gp->fg = term.c.attr.fg;
1678 gp->bg = term.c.attr.bg;
1679 gp->mode = 0;
1680 gp->u = ' ';
1681 }
1682 }
1683 }
1684
1685 void
1686 tdeletechar(int n) {
1687 int dst, src, size;
1688 Glyph *line;
1689
1690 LIMIT(n, 0, term.col - term.c.x);
1691
1692 dst = term.c.x;
1693 src = term.c.x + n;
1694 size = term.col - src;
1695 line = term.line[term.c.y];
1696
1697 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1698 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1699 }
1700
1701 void
1702 tinsertblank(int n) {
1703 int dst, src, size;
1704 Glyph *line;
1705
1706 LIMIT(n, 0, term.col - term.c.x);
1707
1708 dst = term.c.x + n;
1709 src = term.c.x;
1710 size = term.col - dst;
1711 line = term.line[term.c.y];
1712
1713 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1714 tclearregion(src, term.c.y, dst - 1, term.c.y);
1715 }
1716
1717 void
1718 tinsertblankline(int n) {
1719 if(BETWEEN(term.c.y, term.top, term.bot))
1720 tscrolldown(term.c.y, n);
1721 }
1722
1723 void
1724 tdeleteline(int n) {
1725 if(BETWEEN(term.c.y, term.top, term.bot))
1726 tscrollup(term.c.y, n);
1727 }
1728
1729 int32_t
1730 tdefcolor(int *attr, int *npar, int l) {
1731 int32_t idx = -1;
1732 uint r, g, b;
1733
1734 switch (attr[*npar + 1]) {
1735 case 2: /* direct color in RGB space */
1736 if (*npar + 4 >= l) {
1737 fprintf(stderr,
1738 "erresc(38): Incorrect number of parameters (%d)\n",
1739 *npar);
1740 break;
1741 }
1742 r = attr[*npar + 2];
1743 g = attr[*npar + 3];
1744 b = attr[*npar + 4];
1745 *npar += 4;
1746 if(!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1747 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1748 r, g, b);
1749 else
1750 idx = TRUECOLOR(r, g, b);
1751 break;
1752 case 5: /* indexed color */
1753 if (*npar + 2 >= l) {
1754 fprintf(stderr,
1755 "erresc(38): Incorrect number of parameters (%d)\n",
1756 *npar);
1757 break;
1758 }
1759 *npar += 2;
1760 if(!BETWEEN(attr[*npar], 0, 255))
1761 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1762 else
1763 idx = attr[*npar];
1764 break;
1765 case 0: /* implemented defined (only foreground) */
1766 case 1: /* transparent */
1767 case 3: /* direct color in CMY space */
1768 case 4: /* direct color in CMYK space */
1769 default:
1770 fprintf(stderr,
1771 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1772 break;
1773 }
1774
1775 return idx;
1776 }
1777
1778 void
1779 tsetattr(int *attr, int l) {
1780 int i;
1781 int32_t idx;
1782
1783 for(i = 0; i < l; i++) {
1784 switch(attr[i]) {
1785 case 0:
1786 term.c.attr.mode &= ~(
1787 ATTR_BOLD |
1788 ATTR_FAINT |
1789 ATTR_ITALIC |
1790 ATTR_UNDERLINE |
1791 ATTR_BLINK |
1792 ATTR_REVERSE |
1793 ATTR_INVISIBLE |
1794 ATTR_STRUCK );
1795 term.c.attr.fg = defaultfg;
1796 term.c.attr.bg = defaultbg;
1797 break;
1798 case 1:
1799 term.c.attr.mode |= ATTR_BOLD;
1800 break;
1801 case 2:
1802 term.c.attr.mode |= ATTR_FAINT;
1803 break;
1804 case 3:
1805 term.c.attr.mode |= ATTR_ITALIC;
1806 break;
1807 case 4:
1808 term.c.attr.mode |= ATTR_UNDERLINE;
1809 break;
1810 case 5: /* slow blink */
1811 /* FALLTHROUGH */
1812 case 6: /* rapid blink */
1813 term.c.attr.mode |= ATTR_BLINK;
1814 break;
1815 case 7:
1816 term.c.attr.mode |= ATTR_REVERSE;
1817 break;
1818 case 8:
1819 term.c.attr.mode |= ATTR_INVISIBLE;
1820 break;
1821 case 9:
1822 term.c.attr.mode |= ATTR_STRUCK;
1823 break;
1824 case 22:
1825 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
1826 break;
1827 case 23:
1828 term.c.attr.mode &= ~ATTR_ITALIC;
1829 break;
1830 case 24:
1831 term.c.attr.mode &= ~ATTR_UNDERLINE;
1832 break;
1833 case 25:
1834 term.c.attr.mode &= ~ATTR_BLINK;
1835 break;
1836 case 27:
1837 term.c.attr.mode &= ~ATTR_REVERSE;
1838 break;
1839 case 28:
1840 term.c.attr.mode &= ~ATTR_INVISIBLE;
1841 break;
1842 case 29:
1843 term.c.attr.mode &= ~ATTR_STRUCK;
1844 break;
1845 case 38:
1846 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1847 term.c.attr.fg = idx;
1848 break;
1849 case 39:
1850 term.c.attr.fg = defaultfg;
1851 break;
1852 case 48:
1853 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1854 term.c.attr.bg = idx;
1855 break;
1856 case 49:
1857 term.c.attr.bg = defaultbg;
1858 break;
1859 default:
1860 if(BETWEEN(attr[i], 30, 37)) {
1861 term.c.attr.fg = attr[i] - 30;
1862 } else if(BETWEEN(attr[i], 40, 47)) {
1863 term.c.attr.bg = attr[i] - 40;
1864 } else if(BETWEEN(attr[i], 90, 97)) {
1865 term.c.attr.fg = attr[i] - 90 + 8;
1866 } else if(BETWEEN(attr[i], 100, 107)) {
1867 term.c.attr.bg = attr[i] - 100 + 8;
1868 } else {
1869 fprintf(stderr,
1870 "erresc(default): gfx attr %d unknown\n",
1871 attr[i]), csidump();
1872 }
1873 break;
1874 }
1875 }
1876 }
1877
1878 void
1879 tsetscroll(int t, int b) {
1880 int temp;
1881
1882 LIMIT(t, 0, term.row-1);
1883 LIMIT(b, 0, term.row-1);
1884 if(t > b) {
1885 temp = t;
1886 t = b;
1887 b = temp;
1888 }
1889 term.top = t;
1890 term.bot = b;
1891 }
1892
1893 void
1894 tsetmode(bool priv, bool set, int *args, int narg) {
1895 int *lim, mode;
1896 bool alt;
1897
1898 for(lim = args + narg; args < lim; ++args) {
1899 if(priv) {
1900 switch(*args) {
1901 case 1: /* DECCKM -- Cursor key */
1902 MODBIT(term.mode, set, MODE_APPCURSOR);
1903 break;
1904 case 5: /* DECSCNM -- Reverse video */
1905 mode = term.mode;
1906 MODBIT(term.mode, set, MODE_REVERSE);
1907 if(mode != term.mode)
1908 redraw();
1909 break;
1910 case 6: /* DECOM -- Origin */
1911 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1912 tmoveato(0, 0);
1913 break;
1914 case 7: /* DECAWM -- Auto wrap */
1915 MODBIT(term.mode, set, MODE_WRAP);
1916 break;
1917 case 0: /* Error (IGNORED) */
1918 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1919 case 3: /* DECCOLM -- Column (IGNORED) */
1920 case 4: /* DECSCLM -- Scroll (IGNORED) */
1921 case 8: /* DECARM -- Auto repeat (IGNORED) */
1922 case 18: /* DECPFF -- Printer feed (IGNORED) */
1923 case 19: /* DECPEX -- Printer extent (IGNORED) */
1924 case 42: /* DECNRCM -- National characters (IGNORED) */
1925 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1926 break;
1927 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1928 MODBIT(term.mode, !set, MODE_HIDE);
1929 break;
1930 case 9: /* X10 mouse compatibility mode */
1931 xsetpointermotion(0);
1932 MODBIT(term.mode, 0, MODE_MOUSE);
1933 MODBIT(term.mode, set, MODE_MOUSEX10);
1934 break;
1935 case 1000: /* 1000: report button press */
1936 xsetpointermotion(0);
1937 MODBIT(term.mode, 0, MODE_MOUSE);
1938 MODBIT(term.mode, set, MODE_MOUSEBTN);
1939 break;
1940 case 1002: /* 1002: report motion on button press */
1941 xsetpointermotion(0);
1942 MODBIT(term.mode, 0, MODE_MOUSE);
1943 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1944 break;
1945 case 1003: /* 1003: enable all mouse motions */
1946 xsetpointermotion(set);
1947 MODBIT(term.mode, 0, MODE_MOUSE);
1948 MODBIT(term.mode, set, MODE_MOUSEMANY);
1949 break;
1950 case 1004: /* 1004: send focus events to tty */
1951 MODBIT(term.mode, set, MODE_FOCUS);
1952 break;
1953 case 1006: /* 1006: extended reporting mode */
1954 MODBIT(term.mode, set, MODE_MOUSESGR);
1955 break;
1956 case 1034:
1957 MODBIT(term.mode, set, MODE_8BIT);
1958 break;
1959 case 1049: /* swap screen & set/restore cursor as xterm */
1960 if (!allowaltscreen)
1961 break;
1962 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1963 /* FALLTHROUGH */
1964 case 47: /* swap screen */
1965 case 1047:
1966 if (!allowaltscreen)
1967 break;
1968 alt = IS_SET(MODE_ALTSCREEN);
1969 if(alt) {
1970 tclearregion(0, 0, term.col-1,
1971 term.row-1);
1972 }
1973 if(set ^ alt) /* set is always 1 or 0 */
1974 tswapscreen();
1975 if(*args != 1049)
1976 break;
1977 /* FALLTHROUGH */
1978 case 1048:
1979 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1980 break;
1981 case 2004: /* 2004: bracketed paste mode */
1982 MODBIT(term.mode, set, MODE_BRCKTPASTE);
1983 break;
1984 /* Not implemented mouse modes. See comments there. */
1985 case 1001: /* mouse highlight mode; can hang the
1986 terminal by design when implemented. */
1987 case 1005: /* UTF-8 mouse mode; will confuse
1988 applications not supporting UTF-8
1989 and luit. */
1990 case 1015: /* urxvt mangled mouse mode; incompatible
1991 and can be mistaken for other control
1992 codes. */
1993 default:
1994 fprintf(stderr,
1995 "erresc: unknown private set/reset mode %d\n",
1996 *args);
1997 break;
1998 }
1999 } else {
2000 switch(*args) {
2001 case 0: /* Error (IGNORED) */
2002 break;
2003 case 2: /* KAM -- keyboard action */
2004 MODBIT(term.mode, set, MODE_KBDLOCK);
2005 break;
2006 case 4: /* IRM -- Insertion-replacement */
2007 MODBIT(term.mode, set, MODE_INSERT);
2008 break;
2009 case 12: /* SRM -- Send/Receive */
2010 MODBIT(term.mode, !set, MODE_ECHO);
2011 break;
2012 case 20: /* LNM -- Linefeed/new line */
2013 MODBIT(term.mode, set, MODE_CRLF);
2014 break;
2015 default:
2016 fprintf(stderr,
2017 "erresc: unknown set/reset mode %d\n",
2018 *args);
2019 break;
2020 }
2021 }
2022 }
2023 }
2024
2025 void
2026 csihandle(void) {
2027 char buf[40];
2028 int len;
2029
2030 switch(csiescseq.mode[0]) {
2031 default:
2032 unknown:
2033 fprintf(stderr, "erresc: unknown csi ");
2034 csidump();
2035 /* die(""); */
2036 break;
2037 case '@': /* ICH -- Insert <n> blank char */
2038 DEFAULT(csiescseq.arg[0], 1);
2039 tinsertblank(csiescseq.arg[0]);
2040 break;
2041 case 'A': /* CUU -- Cursor <n> Up */
2042 DEFAULT(csiescseq.arg[0], 1);
2043 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2044 break;
2045 case 'B': /* CUD -- Cursor <n> Down */
2046 case 'e': /* VPR --Cursor <n> Down */
2047 DEFAULT(csiescseq.arg[0], 1);
2048 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2049 break;
2050 case 'i': /* MC -- Media Copy */
2051 switch(csiescseq.arg[0]) {
2052 case 0:
2053 tdump();
2054 break;
2055 case 1:
2056 tdumpline(term.c.y);
2057 break;
2058 case 2:
2059 tdumpsel();
2060 break;
2061 case 4:
2062 term.mode &= ~MODE_PRINT;
2063 break;
2064 case 5:
2065 term.mode |= MODE_PRINT;
2066 break;
2067 }
2068 break;
2069 case 'c': /* DA -- Device Attributes */
2070 if(csiescseq.arg[0] == 0)
2071 ttywrite(vtiden, sizeof(vtiden) - 1);
2072 break;
2073 case 'C': /* CUF -- Cursor <n> Forward */
2074 case 'a': /* HPR -- Cursor <n> Forward */
2075 DEFAULT(csiescseq.arg[0], 1);
2076 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2077 break;
2078 case 'D': /* CUB -- Cursor <n> Backward */
2079 DEFAULT(csiescseq.arg[0], 1);
2080 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2081 break;
2082 case 'E': /* CNL -- Cursor <n> Down and first col */
2083 DEFAULT(csiescseq.arg[0], 1);
2084 tmoveto(0, term.c.y+csiescseq.arg[0]);
2085 break;
2086 case 'F': /* CPL -- Cursor <n> Up and first col */
2087 DEFAULT(csiescseq.arg[0], 1);
2088 tmoveto(0, term.c.y-csiescseq.arg[0]);
2089 break;
2090 case 'g': /* TBC -- Tabulation clear */
2091 switch(csiescseq.arg[0]) {
2092 case 0: /* clear current tab stop */
2093 term.tabs[term.c.x] = 0;
2094 break;
2095 case 3: /* clear all the tabs */
2096 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2097 break;
2098 default:
2099 goto unknown;
2100 }
2101 break;
2102 case 'G': /* CHA -- Move to <col> */
2103 case '`': /* HPA */
2104 DEFAULT(csiescseq.arg[0], 1);
2105 tmoveto(csiescseq.arg[0]-1, term.c.y);
2106 break;
2107 case 'H': /* CUP -- Move to <row> <col> */
2108 case 'f': /* HVP */
2109 DEFAULT(csiescseq.arg[0], 1);
2110 DEFAULT(csiescseq.arg[1], 1);
2111 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2112 break;
2113 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2114 DEFAULT(csiescseq.arg[0], 1);
2115 tputtab(csiescseq.arg[0]);
2116 break;
2117 case 'J': /* ED -- Clear screen */
2118 selclear(NULL);
2119 switch(csiescseq.arg[0]) {
2120 case 0: /* below */
2121 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2122 if(term.c.y < term.row-1) {
2123 tclearregion(0, term.c.y+1, term.col-1,
2124 term.row-1);
2125 }
2126 break;
2127 case 1: /* above */
2128 if(term.c.y > 1)
2129 tclearregion(0, 0, term.col-1, term.c.y-1);
2130 tclearregion(0, term.c.y, term.c.x, term.c.y);
2131 break;
2132 case 2: /* all */
2133 tclearregion(0, 0, term.col-1, term.row-1);
2134 break;
2135 default:
2136 goto unknown;
2137 }
2138 break;
2139 case 'K': /* EL -- Clear line */
2140 switch(csiescseq.arg[0]) {
2141 case 0: /* right */
2142 tclearregion(term.c.x, term.c.y, term.col-1,
2143 term.c.y);
2144 break;
2145 case 1: /* left */
2146 tclearregion(0, term.c.y, term.c.x, term.c.y);
2147 break;
2148 case 2: /* all */
2149 tclearregion(0, term.c.y, term.col-1, term.c.y);
2150 break;
2151 }
2152 break;
2153 case 'S': /* SU -- Scroll <n> line up */
2154 DEFAULT(csiescseq.arg[0], 1);
2155 tscrollup(term.top, csiescseq.arg[0]);
2156 break;
2157 case 'T': /* SD -- Scroll <n> line down */
2158 DEFAULT(csiescseq.arg[0], 1);
2159 tscrolldown(term.top, csiescseq.arg[0]);
2160 break;
2161 case 'L': /* IL -- Insert <n> blank lines */
2162 DEFAULT(csiescseq.arg[0], 1);
2163 tinsertblankline(csiescseq.arg[0]);
2164 break;
2165 case 'l': /* RM -- Reset Mode */
2166 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2167 break;
2168 case 'M': /* DL -- Delete <n> lines */
2169 DEFAULT(csiescseq.arg[0], 1);
2170 tdeleteline(csiescseq.arg[0]);
2171 break;
2172 case 'X': /* ECH -- Erase <n> char */
2173 DEFAULT(csiescseq.arg[0], 1);
2174 tclearregion(term.c.x, term.c.y,
2175 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2176 break;
2177 case 'P': /* DCH -- Delete <n> char */
2178 DEFAULT(csiescseq.arg[0], 1);
2179 tdeletechar(csiescseq.arg[0]);
2180 break;
2181 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2182 DEFAULT(csiescseq.arg[0], 1);
2183 tputtab(-csiescseq.arg[0]);
2184 break;
2185 case 'd': /* VPA -- Move to <row> */
2186 DEFAULT(csiescseq.arg[0], 1);
2187 tmoveato(term.c.x, csiescseq.arg[0]-1);
2188 break;
2189 case 'h': /* SM -- Set terminal mode */
2190 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2191 break;
2192 case 'm': /* SGR -- Terminal attribute (color) */
2193 tsetattr(csiescseq.arg, csiescseq.narg);
2194 break;
2195 case 'n': /* DSR – Device Status Report (cursor position) */
2196 if (csiescseq.arg[0] == 6) {
2197 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2198 term.c.y+1, term.c.x+1);
2199 ttywrite(buf, len);
2200 }
2201 break;
2202 case 'r': /* DECSTBM -- Set Scrolling Region */
2203 if(csiescseq.priv) {
2204 goto unknown;
2205 } else {
2206 DEFAULT(csiescseq.arg[0], 1);
2207 DEFAULT(csiescseq.arg[1], term.row);
2208 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2209 tmoveato(0, 0);
2210 }
2211 break;
2212 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2213 tcursor(CURSOR_SAVE);
2214 break;
2215 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2216 tcursor(CURSOR_LOAD);
2217 break;
2218 case ' ':
2219 switch (csiescseq.mode[1]) {
2220 case 'q': /* DECSCUSR -- Set Cursor Style */
2221 DEFAULT(csiescseq.arg[0], 1);
2222 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2223 goto unknown;
2224 }
2225 xw.cursor = csiescseq.arg[0];
2226 break;
2227 default:
2228 goto unknown;
2229 }
2230 break;
2231 }
2232 }
2233
2234 void
2235 csidump(void) {
2236 int i;
2237 uint c;
2238
2239 printf("ESC[");
2240 for(i = 0; i < csiescseq.len; i++) {
2241 c = csiescseq.buf[i] & 0xff;
2242 if(isprint(c)) {
2243 putchar(c);
2244 } else if(c == '\n') {
2245 printf("(\\n)");
2246 } else if(c == '\r') {
2247 printf("(\\r)");
2248 } else if(c == 0x1b) {
2249 printf("(\\e)");
2250 } else {
2251 printf("(%02x)", c);
2252 }
2253 }
2254 putchar('\n');
2255 }
2256
2257 void
2258 csireset(void) {
2259 memset(&csiescseq, 0, sizeof(csiescseq));
2260 }
2261
2262 void
2263 strhandle(void) {
2264 char *p = NULL;
2265 int j, narg, par;
2266
2267 term.esc &= ~(ESC_STR_END|ESC_STR);
2268 strparse();
2269 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2270
2271 switch(strescseq.type) {
2272 case ']': /* OSC -- Operating System Command */
2273 switch(par) {
2274 case 0:
2275 case 1:
2276 case 2:
2277 if(narg > 1)
2278 xsettitle(strescseq.args[1]);
2279 return;
2280 case 4: /* color set */
2281 if(narg < 3)
2282 break;
2283 p = strescseq.args[2];
2284 /* FALLTHROUGH */
2285 case 104: /* color reset, here p = NULL */
2286 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2287 if(xsetcolorname(j, p)) {
2288 fprintf(stderr, "erresc: invalid color %s\n", p);
2289 } else {
2290 /*
2291 * TODO if defaultbg color is changed, borders
2292 * are dirty
2293 */
2294 redraw();
2295 }
2296 return;
2297 }
2298 break;
2299 case 'k': /* old title set compatibility */
2300 xsettitle(strescseq.args[0]);
2301 return;
2302 case 'P': /* DCS -- Device Control String */
2303 case '_': /* APC -- Application Program Command */
2304 case '^': /* PM -- Privacy Message */
2305 return;
2306 }
2307
2308 fprintf(stderr, "erresc: unknown str ");
2309 strdump();
2310 }
2311
2312 void
2313 strparse(void) {
2314 int c;
2315 char *p = strescseq.buf;
2316
2317 strescseq.narg = 0;
2318 strescseq.buf[strescseq.len] = '\0';
2319
2320 if(*p == '\0')
2321 return;
2322
2323 while(strescseq.narg < STR_ARG_SIZ) {
2324 strescseq.args[strescseq.narg++] = p;
2325 while((c = *p) != ';' && c != '\0')
2326 ++p;
2327 if(c == '\0')
2328 return;
2329 *p++ = '\0';
2330 }
2331 }
2332
2333 void
2334 strdump(void) {
2335 int i;
2336 uint c;
2337
2338 printf("ESC%c", strescseq.type);
2339 for(i = 0; i < strescseq.len; i++) {
2340 c = strescseq.buf[i] & 0xff;
2341 if(c == '\0') {
2342 return;
2343 } else if(isprint(c)) {
2344 putchar(c);
2345 } else if(c == '\n') {
2346 printf("(\\n)");
2347 } else if(c == '\r') {
2348 printf("(\\r)");
2349 } else if(c == 0x1b) {
2350 printf("(\\e)");
2351 } else {
2352 printf("(%02x)", c);
2353 }
2354 }
2355 printf("ESC\\\n");
2356 }
2357
2358 void
2359 strreset(void) {
2360 memset(&strescseq, 0, sizeof(strescseq));
2361 }
2362
2363 void
2364 tprinter(char *s, size_t len) {
2365 if(iofd != -1 && xwrite(iofd, s, len) < 0) {
2366 fprintf(stderr, "Error writing in %s:%s\n",
2367 opt_io, strerror(errno));
2368 close(iofd);
2369 iofd = -1;
2370 }
2371 }
2372
2373 void
2374 toggleprinter(const Arg *arg) {
2375 term.mode ^= MODE_PRINT;
2376 }
2377
2378 void
2379 printscreen(const Arg *arg) {
2380 tdump();
2381 }
2382
2383 void
2384 printsel(const Arg *arg) {
2385 tdumpsel();
2386 }
2387
2388 void
2389 tdumpsel(void) {
2390 char *ptr;
2391
2392 if((ptr = getsel())) {
2393 tprinter(ptr, strlen(ptr));
2394 free(ptr);
2395 }
2396 }
2397
2398 void
2399 tdumpline(int n) {
2400 char buf[UTF_SIZ];
2401 Glyph *bp, *end;
2402
2403 bp = &term.line[n][0];
2404 end = &bp[MIN(tlinelen(n), term.col) - 1];
2405 if(bp != end || bp->u != ' ') {
2406 for( ;bp <= end; ++bp)
2407 tprinter(buf, utf8encode(bp->u, buf));
2408 }
2409 tprinter("\n", 1);
2410 }
2411
2412 void
2413 tdump(void) {
2414 int i;
2415
2416 for(i = 0; i < term.row; ++i)
2417 tdumpline(i);
2418 }
2419
2420 void
2421 tputtab(int n) {
2422 uint x = term.c.x;
2423
2424 if(n > 0) {
2425 while(x < term.col && n--)
2426 for(++x; x < term.col && !term.tabs[x]; ++x)
2427 /* nothing */ ;
2428 } else if(n < 0) {
2429 while(x > 0 && n++)
2430 for(--x; x > 0 && !term.tabs[x]; --x)
2431 /* nothing */ ;
2432 }
2433 term.c.x = LIMIT(x, 0, term.col-1);
2434 }
2435
2436 void
2437 techo(long u) {
2438 if(ISCONTROL(u)) { /* control code */
2439 if(u & 0x80) {
2440 u &= 0x7f;
2441 tputc('^');
2442 tputc('[');
2443 } else if(u != '\n' && u != '\r' && u != '\t') {
2444 u ^= 0x40;
2445 tputc('^');
2446 }
2447 }
2448 tputc(u);
2449 }
2450
2451 void
2452 tdeftran(char ascii) {
2453 static char cs[] = "0B";
2454 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2455 char *p;
2456
2457 if((p = strchr(cs, ascii)) == NULL) {
2458 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2459 } else {
2460 term.trantbl[term.icharset] = vcs[p - cs];
2461 }
2462 }
2463
2464 void
2465 tdectest(char c) {
2466 int x, y;
2467
2468 if(c == '8') { /* DEC screen alignment test. */
2469 for(x = 0; x < term.col; ++x) {
2470 for(y = 0; y < term.row; ++y)
2471 tsetchar('E', &term.c.attr, x, y);
2472 }
2473 }
2474 }
2475
2476 void
2477 tstrsequence(uchar c) {
2478 switch (c) {
2479 case 0x90: /* DCS -- Device Control String */
2480 c = 'P';
2481 break;
2482 case 0x9f: /* APC -- Application Program Command */
2483 c = '_';
2484 break;
2485 case 0x9e: /* PM -- Privacy Message */
2486 c = '^';
2487 break;
2488 case 0x9d: /* OSC -- Operating System Command */
2489 c = ']';
2490 break;
2491 }
2492 strreset();
2493 strescseq.type = c;
2494 term.esc |= ESC_STR;
2495 }
2496
2497 void
2498 tcontrolcode(uchar ascii) {
2499 switch(ascii) {
2500 case '\t': /* HT */
2501 tputtab(1);
2502 return;
2503 case '\b': /* BS */
2504 tmoveto(term.c.x-1, term.c.y);
2505 return;
2506 case '\r': /* CR */
2507 tmoveto(0, term.c.y);
2508 return;
2509 case '\f': /* LF */
2510 case '\v': /* VT */
2511 case '\n': /* LF */
2512 /* go to first col if the mode is set */
2513 tnewline(IS_SET(MODE_CRLF));
2514 return;
2515 case '\a': /* BEL */
2516 if(term.esc & ESC_STR_END) {
2517 /* backwards compatibility to xterm */
2518 strhandle();
2519 } else {
2520 if(!(xw.state & WIN_FOCUSED))
2521 xseturgency(1);
2522 if (bellvolume)
2523 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2524 }
2525 break;
2526 case '\033': /* ESC */
2527 csireset();
2528 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2529 term.esc |= ESC_START;
2530 return;
2531 case '\016': /* SO (LS1 -- Locking shift 1) */
2532 case '\017': /* SI (LS0 -- Locking shift 0) */
2533 term.charset = 1 - (ascii - '\016');
2534 return;
2535 case '\032': /* SUB */
2536 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2537 case '\030': /* CAN */
2538 csireset();
2539 break;
2540 case '\005': /* ENQ (IGNORED) */
2541 case '\000': /* NUL (IGNORED) */
2542 case '\021': /* XON (IGNORED) */
2543 case '\023': /* XOFF (IGNORED) */
2544 case 0177: /* DEL (IGNORED) */
2545 return;
2546 case 0x84: /* TODO: IND */
2547 break;
2548 case 0x85: /* NEL -- Next line */
2549 tnewline(1); /* always go to first col */
2550 break;
2551 case 0x88: /* HTS -- Horizontal tab stop */
2552 term.tabs[term.c.x] = 1;
2553 break;
2554 case 0x8d: /* TODO: RI */
2555 case 0x8e: /* TODO: SS2 */
2556 case 0x8f: /* TODO: SS3 */
2557 case 0x98: /* TODO: SOS */
2558 break;
2559 case 0x9a: /* DECID -- Identify Terminal */
2560 ttywrite(vtiden, sizeof(vtiden) - 1);
2561 break;
2562 case 0x9b: /* TODO: CSI */
2563 case 0x9c: /* TODO: ST */
2564 break;
2565 case 0x90: /* DCS -- Device Control String */
2566 case 0x9f: /* APC -- Application Program Command */
2567 case 0x9e: /* PM -- Privacy Message */
2568 case 0x9d: /* OSC -- Operating System Command */
2569 tstrsequence(ascii);
2570 return;
2571 }
2572 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2573 term.esc &= ~(ESC_STR_END|ESC_STR);
2574 }
2575
2576 /*
2577 * returns 1 when the sequence is finished and it hasn't to read
2578 * more characters for this sequence, otherwise 0
2579 */
2580 int
2581 eschandle(uchar ascii) {
2582 switch(ascii) {
2583 case '[':
2584 term.esc |= ESC_CSI;
2585 return 0;
2586 case '#':
2587 term.esc |= ESC_TEST;
2588 return 0;
2589 case 'P': /* DCS -- Device Control String */
2590 case '_': /* APC -- Application Program Command */
2591 case '^': /* PM -- Privacy Message */
2592 case ']': /* OSC -- Operating System Command */
2593 case 'k': /* old title set compatibility */
2594 tstrsequence(ascii);
2595 return 0;
2596 case 'n': /* LS2 -- Locking shift 2 */
2597 case 'o': /* LS3 -- Locking shift 3 */
2598 term.charset = 2 + (ascii - 'n');
2599 break;
2600 case '(': /* GZD4 -- set primary charset G0 */
2601 case ')': /* G1D4 -- set secondary charset G1 */
2602 case '*': /* G2D4 -- set tertiary charset G2 */
2603 case '+': /* G3D4 -- set quaternary charset G3 */
2604 term.icharset = ascii - '(';
2605 term.esc |= ESC_ALTCHARSET;
2606 return 0;
2607 case 'D': /* IND -- Linefeed */
2608 if(term.c.y == term.bot) {
2609 tscrollup(term.top, 1);
2610 } else {
2611 tmoveto(term.c.x, term.c.y+1);
2612 }
2613 break;
2614 case 'E': /* NEL -- Next line */
2615 tnewline(1); /* always go to first col */
2616 break;
2617 case 'H': /* HTS -- Horizontal tab stop */
2618 term.tabs[term.c.x] = 1;
2619 break;
2620 case 'M': /* RI -- Reverse index */
2621 if(term.c.y == term.top) {
2622 tscrolldown(term.top, 1);
2623 } else {
2624 tmoveto(term.c.x, term.c.y-1);
2625 }
2626 break;
2627 case 'Z': /* DECID -- Identify Terminal */
2628 ttywrite(vtiden, sizeof(vtiden) - 1);
2629 break;
2630 case 'c': /* RIS -- Reset to inital state */
2631 treset();
2632 xresettitle();
2633 xloadcols();
2634 break;
2635 case '=': /* DECPAM -- Application keypad */
2636 term.mode |= MODE_APPKEYPAD;
2637 break;
2638 case '>': /* DECPNM -- Normal keypad */
2639 term.mode &= ~MODE_APPKEYPAD;
2640 break;
2641 case '7': /* DECSC -- Save Cursor */
2642 tcursor(CURSOR_SAVE);
2643 break;
2644 case '8': /* DECRC -- Restore Cursor */
2645 tcursor(CURSOR_LOAD);
2646 break;
2647 case '\\': /* ST -- String Terminator */
2648 if(term.esc & ESC_STR_END)
2649 strhandle();
2650 break;
2651 default:
2652 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2653 (uchar) ascii, isprint(ascii)? ascii:'.');
2654 break;
2655 }
2656 return 1;
2657 }
2658
2659 void
2660 tputc(long u) {
2661 char c[UTF_SIZ];
2662 bool control;
2663 int width, len;
2664 Glyph *gp;
2665
2666 len = utf8encode(u, c);
2667 if((width = wcwidth(u)) == -1) {
2668 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
2669 width = 1;
2670 }
2671
2672 if(IS_SET(MODE_PRINT))
2673 tprinter(c, len);
2674 control = ISCONTROL(u);
2675
2676 /*
2677 * STR sequence must be checked before anything else
2678 * because it uses all following characters until it
2679 * receives a ESC, a SUB, a ST or any other C1 control
2680 * character.
2681 */
2682 if(term.esc & ESC_STR) {
2683 if(u == '\a' || u == 030 || u == 032 || u == 033 ||
2684 ISCONTROLC1(u)) {
2685 term.esc &= ~(ESC_START|ESC_STR);
2686 term.esc |= ESC_STR_END;
2687 } else if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
2688 memmove(&strescseq.buf[strescseq.len], c, len);
2689 strescseq.len += len;
2690 return;
2691 } else {
2692 /*
2693 * Here is a bug in terminals. If the user never sends
2694 * some code to stop the str or esc command, then st
2695 * will stop responding. But this is better than
2696 * silently failing with unknown characters. At least
2697 * then users will report back.
2698 *
2699 * In the case users ever get fixed, here is the code:
2700 */
2701 /*
2702 * term.esc = 0;
2703 * strhandle();
2704 */
2705 return;
2706 }
2707 }
2708
2709 /*
2710 * Actions of control codes must be performed as soon they arrive
2711 * because they can be embedded inside a control sequence, and
2712 * they must not cause conflicts with sequences.
2713 */
2714 if(control) {
2715 tcontrolcode(u);
2716 /*
2717 * control codes are not shown ever
2718 */
2719 return;
2720 } else if(term.esc & ESC_START) {
2721 if(term.esc & ESC_CSI) {
2722 csiescseq.buf[csiescseq.len++] = u;
2723 if(BETWEEN(u, 0x40, 0x7E)
2724 || csiescseq.len >= \
2725 sizeof(csiescseq.buf)-1) {
2726 term.esc = 0;
2727 csiparse();
2728 csihandle();
2729 }
2730 return;
2731 } else if(term.esc & ESC_ALTCHARSET) {
2732 tdeftran(u);
2733 } else if(term.esc & ESC_TEST) {
2734 tdectest(u);
2735 } else {
2736 if (!eschandle(u))
2737 return;
2738 /* sequence already finished */
2739 }
2740 term.esc = 0;
2741 /*
2742 * All characters which form part of a sequence are not
2743 * printed
2744 */
2745 return;
2746 }
2747 if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
2748 selclear(NULL);
2749
2750 gp = &term.line[term.c.y][term.c.x];
2751 if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2752 gp->mode |= ATTR_WRAP;
2753 tnewline(1);
2754 gp = &term.line[term.c.y][term.c.x];
2755 }
2756
2757 if(IS_SET(MODE_INSERT) && term.c.x+width < term.col)
2758 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
2759
2760 if(term.c.x+width > term.col) {
2761 tnewline(1);
2762 gp = &term.line[term.c.y][term.c.x];
2763 }
2764
2765 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
2766
2767 if(width == 2) {
2768 gp->mode |= ATTR_WIDE;
2769 if(term.c.x+1 < term.col) {
2770 gp[1].u = '\0';
2771 gp[1].mode = ATTR_WDUMMY;
2772 }
2773 }
2774 if(term.c.x+width < term.col) {
2775 tmoveto(term.c.x+width, term.c.y);
2776 } else {
2777 term.c.state |= CURSOR_WRAPNEXT;
2778 }
2779 }
2780
2781 void
2782 tresize(int col, int row) {
2783 int i;
2784 int minrow = MIN(row, term.row);
2785 int mincol = MIN(col, term.col);
2786 bool *bp;
2787 TCursor c;
2788
2789 if(col < 1 || row < 1) {
2790 fprintf(stderr,
2791 "tresize: error resizing to %dx%d\n", col, row);
2792 return;
2793 }
2794
2795 /*
2796 * slide screen to keep cursor where we expect it -
2797 * tscrollup would work here, but we can optimize to
2798 * memmove because we're freeing the earlier lines
2799 */
2800 for(i = 0; i <= term.c.y - row; i++) {
2801 free(term.line[i]);
2802 free(term.alt[i]);
2803 }
2804 /* ensure that both src and dst are not NULL */
2805 if (i > 0) {
2806 memmove(term.line, term.line + i, row * sizeof(Line));
2807 memmove(term.alt, term.alt + i, row * sizeof(Line));
2808 }
2809 for(i += row; i < term.row; i++) {
2810 free(term.line[i]);
2811 free(term.alt[i]);
2812 }
2813
2814 /* resize to new height */
2815 term.line = xrealloc(term.line, row * sizeof(Line));
2816 term.alt = xrealloc(term.alt, row * sizeof(Line));
2817 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2818 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2819
2820 /* resize each row to new width, zero-pad if needed */
2821 for(i = 0; i < minrow; i++) {
2822 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2823 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2824 }
2825
2826 /* allocate any new rows */
2827 for(/* i == minrow */; i < row; i++) {
2828 term.line[i] = xmalloc(col * sizeof(Glyph));
2829 term.alt[i] = xmalloc(col * sizeof(Glyph));
2830 }
2831 if(col > term.col) {
2832 bp = term.tabs + term.col;
2833
2834 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2835 while(--bp > term.tabs && !*bp)
2836 /* nothing */ ;
2837 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2838 *bp = 1;
2839 }
2840 /* update terminal size */
2841 term.col = col;
2842 term.row = row;
2843 /* reset scrolling region */
2844 tsetscroll(0, row-1);
2845 /* make use of the LIMIT in tmoveto */
2846 tmoveto(term.c.x, term.c.y);
2847 /* Clearing both screens (it makes dirty all lines) */
2848 c = term.c;
2849 for(i = 0; i < 2; i++) {
2850 if(mincol < col && 0 < minrow) {
2851 tclearregion(mincol, 0, col - 1, minrow - 1);
2852 }
2853 if(0 < col && minrow < row) {
2854 tclearregion(0, minrow, col - 1, row - 1);
2855 }
2856 tswapscreen();
2857 tcursor(CURSOR_LOAD);
2858 }
2859 term.c = c;
2860 }
2861
2862 void
2863 xresize(int col, int row) {
2864 xw.tw = MAX(1, col * xw.cw);
2865 xw.th = MAX(1, row * xw.ch);
2866
2867 XFreePixmap(xw.dpy, xw.buf);
2868 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2869 DefaultDepth(xw.dpy, xw.scr));
2870 XftDrawChange(xw.draw, xw.buf);
2871 xclear(0, 0, xw.w, xw.h);
2872 }
2873
2874 ushort
2875 sixd_to_16bit(int x) {
2876 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
2877 }
2878
2879 bool
2880 xloadcolor(int i, const char *name, Color *ncolor) {
2881 XRenderColor color = { .alpha = 0xffff };
2882
2883 if(!name) {
2884 if(BETWEEN(i, 16, 255)) { /* 256 color */
2885 if(i < 6*6*6+16) { /* same colors as xterm */
2886 color.red = sixd_to_16bit( ((i-16)/36)%6 );
2887 color.green = sixd_to_16bit( ((i-16)/6) %6 );
2888 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
2889 } else { /* greyscale */
2890 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
2891 color.green = color.blue = color.red;
2892 }
2893 return XftColorAllocValue(xw.dpy, xw.vis,
2894 xw.cmap, &color, ncolor);
2895 } else
2896 name = colorname[i];
2897 }
2898 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
2899 }
2900
2901 void
2902 xloadcols(void) {
2903 int i;
2904 static bool loaded;
2905 Color *cp;
2906
2907 if(loaded) {
2908 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
2909 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
2910 }
2911
2912 for(i = 0; i < LEN(dc.col); i++)
2913 if(!xloadcolor(i, NULL, &dc.col[i])) {
2914 if(colorname[i])
2915 die("Could not allocate color '%s'\n", colorname[i]);
2916 else
2917 die("Could not allocate color %d\n", i);
2918 }
2919 loaded = true;
2920 }
2921
2922 int
2923 xsetcolorname(int x, const char *name) {
2924 Color ncolor;
2925
2926 if(!BETWEEN(x, 0, LEN(dc.col)))
2927 return 1;
2928
2929
2930 if(!xloadcolor(x, name, &ncolor))
2931 return 1;
2932
2933 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
2934 dc.col[x] = ncolor;
2935 return 0;
2936 }
2937
2938 void
2939 xtermclear(int col1, int row1, int col2, int row2) {
2940 XftDrawRect(xw.draw,
2941 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2942 borderpx + col1 * xw.cw,
2943 borderpx + row1 * xw.ch,
2944 (col2-col1+1) * xw.cw,
2945 (row2-row1+1) * xw.ch);
2946 }
2947
2948 /*
2949 * Absolute coordinates.
2950 */
2951 void
2952 xclear(int x1, int y1, int x2, int y2) {
2953 XftDrawRect(xw.draw,
2954 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2955 x1, y1, x2-x1, y2-y1);
2956 }
2957
2958 void
2959 xhints(void) {
2960 XClassHint class = {opt_class ? opt_class : termname, termname};
2961 XWMHints wm = {.flags = InputHint, .input = 1};
2962 XSizeHints *sizeh = NULL;
2963
2964 sizeh = XAllocSizeHints();
2965
2966 sizeh->flags = PSize | PResizeInc | PBaseSize;
2967 sizeh->height = xw.h;
2968 sizeh->width = xw.w;
2969 sizeh->height_inc = xw.ch;
2970 sizeh->width_inc = xw.cw;
2971 sizeh->base_height = 2 * borderpx;
2972 sizeh->base_width = 2 * borderpx;
2973 if(xw.isfixed == True) {
2974 sizeh->flags |= PMaxSize | PMinSize;
2975 sizeh->min_width = sizeh->max_width = xw.w;
2976 sizeh->min_height = sizeh->max_height = xw.h;
2977 }
2978 if(xw.gm & (XValue|YValue)) {
2979 sizeh->flags |= USPosition | PWinGravity;
2980 sizeh->x = xw.l;
2981 sizeh->y = xw.t;
2982 sizeh->win_gravity = xgeommasktogravity(xw.gm);
2983 }
2984
2985 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
2986 &class);
2987 XFree(sizeh);
2988 }
2989
2990 int
2991 xgeommasktogravity(int mask) {
2992 switch(mask & (XNegative|YNegative)) {
2993 case 0:
2994 return NorthWestGravity;
2995 case XNegative:
2996 return NorthEastGravity;
2997 case YNegative:
2998 return SouthWestGravity;
2999 }
3000 return SouthEastGravity;
3001 }
3002
3003 int
3004 xloadfont(Font *f, FcPattern *pattern) {
3005 FcPattern *match;
3006 FcResult result;
3007
3008 match = FcFontMatch(NULL, pattern, &result);
3009 if(!match)
3010 return 1;
3011
3012 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3013 FcPatternDestroy(match);
3014 return 1;
3015 }
3016
3017 f->set = NULL;
3018 f->pattern = FcPatternDuplicate(pattern);
3019
3020 f->ascent = f->match->ascent;
3021 f->descent = f->match->descent;
3022 f->lbearing = 0;
3023 f->rbearing = f->match->max_advance_width;
3024
3025 f->height = f->ascent + f->descent;
3026 f->width = f->lbearing + f->rbearing;
3027
3028 return 0;
3029 }
3030
3031 void
3032 xloadfonts(char *fontstr, double fontsize) {
3033 FcPattern *pattern;
3034 FcResult r_sz, r_psz;
3035 double fontval;
3036 float ceilf(float);
3037
3038 if(fontstr[0] == '-') {
3039 pattern = XftXlfdParse(fontstr, False, False);
3040 } else {
3041 pattern = FcNameParse((FcChar8 *)fontstr);
3042 }
3043
3044 if(!pattern)
3045 die("st: can't open font %s\n", fontstr);
3046
3047 if(fontsize > 1) {
3048 FcPatternDel(pattern, FC_PIXEL_SIZE);
3049 FcPatternDel(pattern, FC_SIZE);
3050 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3051 usedfontsize = fontsize;
3052 } else {
3053 r_psz = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
3054 r_sz = FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval);
3055 if(r_psz == FcResultMatch) {
3056 usedfontsize = fontval;
3057 } else if(r_sz == FcResultMatch) {
3058 usedfontsize = -1;
3059 } else {
3060 /*
3061 * Default font size is 12, if none given. This is to
3062 * have a known usedfontsize value.
3063 */
3064 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3065 usedfontsize = 12;
3066 }
3067 defaultfontsize = usedfontsize;
3068 }
3069
3070 FcConfigSubstitute(0, pattern, FcMatchPattern);
3071 FcDefaultSubstitute(pattern);
3072
3073 if(xloadfont(&dc.font, pattern))
3074 die("st: can't open font %s\n", fontstr);
3075
3076 if(usedfontsize < 0) {
3077 FcPatternGetDouble(dc.font.match->pattern,
3078 FC_PIXEL_SIZE, 0, &fontval);
3079 usedfontsize = fontval;
3080 if(fontsize == 0)
3081 defaultfontsize = fontval;
3082 }
3083
3084 /* Setting character width and height. */
3085 xw.cw = ceilf(dc.font.width * cwscale);
3086 xw.ch = ceilf(dc.font.height * chscale);
3087
3088 FcPatternDel(pattern, FC_SLANT);
3089 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3090 if(xloadfont(&dc.ifont, pattern))
3091 die("st: can't open font %s\n", fontstr);
3092
3093 FcPatternDel(pattern, FC_WEIGHT);
3094 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3095 if(xloadfont(&dc.ibfont, pattern))
3096 die("st: can't open font %s\n", fontstr);
3097
3098 FcPatternDel(pattern, FC_SLANT);
3099 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3100 if(xloadfont(&dc.bfont, pattern))
3101 die("st: can't open font %s\n", fontstr);
3102
3103 FcPatternDestroy(pattern);
3104 }
3105
3106 void
3107 xunloadfont(Font *f) {
3108 XftFontClose(xw.dpy, f->match);
3109 FcPatternDestroy(f->pattern);
3110 if(f->set)
3111 FcFontSetDestroy(f->set);
3112 }
3113
3114 void
3115 xunloadfonts(void) {
3116 /* Free the loaded fonts in the font cache. */
3117 while(frclen > 0)
3118 XftFontClose(xw.dpy, frc[--frclen].font);
3119
3120 xunloadfont(&dc.font);
3121 xunloadfont(&dc.bfont);
3122 xunloadfont(&dc.ifont);
3123 xunloadfont(&dc.ibfont);
3124 }
3125
3126 void
3127 xzoom(const Arg *arg) {
3128 Arg larg;
3129
3130 larg.i = usedfontsize + arg->i;
3131 xzoomabs(&larg);
3132 }
3133
3134 void
3135 xzoomabs(const Arg *arg) {
3136 xunloadfonts();
3137 xloadfonts(usedfont, arg->i);
3138 cresize(0, 0);
3139 redraw();
3140 xhints();
3141 }
3142
3143 void
3144 xzoomreset(const Arg *arg) {
3145 Arg larg;
3146
3147 if(defaultfontsize > 0) {
3148 larg.i = defaultfontsize;
3149 xzoomabs(&larg);
3150 }
3151 }
3152
3153 void
3154 xinit(void) {
3155 XGCValues gcvalues;
3156 Cursor cursor;
3157 Window parent;
3158 pid_t thispid = getpid();
3159
3160 if(!(xw.dpy = XOpenDisplay(NULL)))
3161 die("Can't open display\n");
3162 xw.scr = XDefaultScreen(xw.dpy);
3163 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3164
3165 /* font */
3166 if(!FcInit())
3167 die("Could not init fontconfig.\n");
3168
3169 usedfont = (opt_font == NULL)? font : opt_font;
3170 xloadfonts(usedfont, 0);
3171
3172 /* colors */
3173 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3174 xloadcols();
3175
3176 /* adjust fixed window geometry */
3177 xw.w = 2 * borderpx + term.col * xw.cw;
3178 xw.h = 2 * borderpx + term.row * xw.ch;
3179 if(xw.gm & XNegative)
3180 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3181 if(xw.gm & YNegative)
3182 xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
3183
3184 /* Events */
3185 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3186 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3187 xw.attrs.bit_gravity = NorthWestGravity;
3188 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3189 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3190 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3191 xw.attrs.colormap = xw.cmap;
3192
3193 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
3194 parent = XRootWindow(xw.dpy, xw.scr);
3195 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3196 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3197 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3198 | CWEventMask | CWColormap, &xw.attrs);
3199
3200 memset(&gcvalues, 0, sizeof(gcvalues));
3201 gcvalues.graphics_exposures = False;
3202 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3203 &gcvalues);
3204 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3205 DefaultDepth(xw.dpy, xw.scr));
3206 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3207 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3208
3209 /* Xft rendering context */
3210 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3211
3212 /* input methods */
3213 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3214 XSetLocaleModifiers("@im=local");
3215 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3216 XSetLocaleModifiers("@im=");
3217 if((xw.xim = XOpenIM(xw.dpy,
3218 NULL, NULL, NULL)) == NULL) {
3219 die("XOpenIM failed. Could not open input"
3220 " device.\n");
3221 }
3222 }
3223 }
3224 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3225 | XIMStatusNothing, XNClientWindow, xw.win,
3226 XNFocusWindow, xw.win, NULL);
3227 if(xw.xic == NULL)
3228 die("XCreateIC failed. Could not obtain input method.\n");
3229
3230 /* white cursor, black outline */
3231 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
3232 XDefineCursor(xw.dpy, xw.win, cursor);
3233 XRecolorCursor(xw.dpy, cursor,
3234 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
3235 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
3236
3237 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3238 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3239 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3240 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3241
3242 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3243 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3244 PropModeReplace, (uchar *)&thispid, 1);
3245
3246 xresettitle();
3247 XMapWindow(xw.dpy, xw.win);
3248 xhints();
3249 XSync(xw.dpy, False);
3250 }
3251
3252 void
3253 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
3254 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3255 width = charlen * xw.cw, xp, i;
3256 int frcflags, charexists;
3257 int u8fl, u8fblen, u8cblen, doesexist;
3258 char *u8c, *u8fs;
3259 long unicodep;
3260 Font *font = &dc.font;
3261 FcResult fcres;
3262 FcPattern *fcpattern, *fontpattern;
3263 FcFontSet *fcsets[] = { NULL };
3264 FcCharSet *fccharset;
3265 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3266 XRenderColor colfg, colbg;
3267 XRectangle r;
3268 int oneatatime;
3269
3270 frcflags = FRC_NORMAL;
3271
3272 if(base.mode & ATTR_ITALIC) {
3273 if(base.fg == defaultfg)
3274 base.fg = defaultitalic;
3275 font = &dc.ifont;
3276 frcflags = FRC_ITALIC;
3277 } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
3278 if(base.fg == defaultfg)
3279 base.fg = defaultitalic;
3280 font = &dc.ibfont;
3281 frcflags = FRC_ITALICBOLD;
3282 } else if(base.mode & ATTR_UNDERLINE) {
3283 if(base.fg == defaultfg)
3284 base.fg = defaultunderline;
3285 }
3286
3287 if(IS_TRUECOL(base.fg)) {
3288 colfg.alpha = 0xffff;
3289 colfg.red = TRUERED(base.fg);
3290 colfg.green = TRUEGREEN(base.fg);
3291 colfg.blue = TRUEBLUE(base.fg);
3292 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3293 fg = &truefg;
3294 } else {
3295 fg = &dc.col[base.fg];
3296 }
3297
3298 if(IS_TRUECOL(base.bg)) {
3299 colbg.alpha = 0xffff;
3300 colbg.green = TRUEGREEN(base.bg);
3301 colbg.red = TRUERED(base.bg);
3302 colbg.blue = TRUEBLUE(base.bg);
3303 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3304 bg = &truebg;
3305 } else {
3306 bg = &dc.col[base.bg];
3307 }
3308
3309 if(base.mode & ATTR_BOLD) {
3310 /*
3311 * change basic system colors [0-7]
3312 * to bright system colors [8-15]
3313 */
3314 if(BETWEEN(base.fg, 0, 7) && !(base.mode & ATTR_FAINT))
3315 fg = &dc.col[base.fg + 8];
3316
3317 if(base.mode & ATTR_ITALIC) {
3318 font = &dc.ibfont;
3319 frcflags = FRC_ITALICBOLD;
3320 } else {
3321 font = &dc.bfont;
3322 frcflags = FRC_BOLD;
3323 }
3324 }
3325
3326 if(IS_SET(MODE_REVERSE)) {
3327 if(fg == &dc.col[defaultfg]) {
3328 fg = &dc.col[defaultbg];
3329 } else {
3330 colfg.red = ~fg->color.red;
3331 colfg.green = ~fg->color.green;
3332 colfg.blue = ~fg->color.blue;
3333 colfg.alpha = fg->color.alpha;
3334 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3335 &revfg);
3336 fg = &revfg;
3337 }
3338
3339 if(bg == &dc.col[defaultbg]) {
3340 bg = &dc.col[defaultfg];
3341 } else {
3342 colbg.red = ~bg->color.red;
3343 colbg.green = ~bg->color.green;
3344 colbg.blue = ~bg->color.blue;
3345 colbg.alpha = bg->color.alpha;
3346 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3347 &revbg);
3348 bg = &revbg;
3349 }
3350 }
3351
3352 if(base.mode & ATTR_REVERSE) {
3353 temp = fg;
3354 fg = bg;
3355 bg = temp;
3356 }
3357
3358 if(base.mode & ATTR_FAINT && !(base.mode & ATTR_BOLD)) {
3359 colfg.red = fg->color.red / 2;
3360 colfg.green = fg->color.green / 2;
3361 colfg.blue = fg->color.blue / 2;
3362 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3363 fg = &revfg;
3364 }
3365
3366 if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3367 fg = bg;
3368
3369 if(base.mode & ATTR_INVISIBLE)
3370 fg = bg;
3371
3372 /* Intelligent cleaning up of the borders. */
3373 if(x == 0) {
3374 xclear(0, (y == 0)? 0 : winy, borderpx,
3375 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3376 }
3377 if(x + charlen >= term.col) {
3378 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3379 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3380 }
3381 if(y == 0)
3382 xclear(winx, 0, winx + width, borderpx);
3383 if(y == term.row-1)
3384 xclear(winx, winy + xw.ch, winx + width, xw.h);
3385
3386 /* Clean up the region we want to draw to. */
3387 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3388
3389 /* Set the clip region because Xft is sometimes dirty. */
3390 r.x = 0;
3391 r.y = 0;
3392 r.height = xw.ch;
3393 r.width = width;
3394 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3395
3396 for(xp = winx; bytelen > 0;) {
3397 /*
3398 * Search for the range in the to be printed string of glyphs
3399 * that are in the main font. Then print that range. If
3400 * some glyph is found that is not in the font, do the
3401 * fallback dance.
3402 */
3403 u8fs = s;
3404 u8fblen = 0;
3405 u8fl = 0;
3406 oneatatime = font->width != xw.cw;
3407 for(;;) {
3408 u8c = s;
3409 u8cblen = utf8decode(s, &unicodep, UTF_SIZ);
3410 s += u8cblen;
3411 bytelen -= u8cblen;
3412
3413 doesexist = XftCharExists(xw.dpy, font->match, unicodep);
3414 if(doesexist) {
3415 u8fl++;
3416 u8fblen += u8cblen;
3417 if(!oneatatime && bytelen > 0)
3418 continue;
3419 }
3420
3421 if(u8fl > 0) {
3422 XftDrawStringUtf8(xw.draw, fg,
3423 font->match, xp,
3424 winy + font->ascent,
3425 (FcChar8 *)u8fs,
3426 u8fblen);
3427 xp += xw.cw * u8fl;
3428 }
3429 break;
3430 }
3431 if(doesexist) {
3432 if(oneatatime)
3433 continue;
3434 break;
3435 }
3436
3437 /* Search the font cache. */
3438 for(i = 0; i < frclen; i++) {
3439 charexists = XftCharExists(xw.dpy, frc[i].font, unicodep);
3440 /* Everything correct. */
3441 if(charexists && frc[i].flags == frcflags)
3442 break;
3443 /* We got a default font for a not found glyph. */
3444 if(!charexists && frc[i].flags == frcflags \
3445 && frc[i].unicodep == unicodep) {
3446 break;
3447 }
3448 }
3449
3450 /* Nothing was found. */
3451 if(i >= frclen) {
3452 if(!font->set)
3453 font->set = FcFontSort(0, font->pattern,
3454 FcTrue, 0, &fcres);
3455 fcsets[0] = font->set;
3456
3457 /*
3458 * Nothing was found in the cache. Now use
3459 * some dozen of Fontconfig calls to get the
3460 * font for one single character.
3461 *
3462 * Xft and fontconfig are design failures.
3463 */
3464 fcpattern = FcPatternDuplicate(font->pattern);
3465 fccharset = FcCharSetCreate();
3466
3467 FcCharSetAddChar(fccharset, unicodep);
3468 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3469 fccharset);
3470 FcPatternAddBool(fcpattern, FC_SCALABLE,
3471 FcTrue);
3472
3473 FcConfigSubstitute(0, fcpattern,
3474 FcMatchPattern);
3475 FcDefaultSubstitute(fcpattern);
3476
3477 fontpattern = FcFontSetMatch(0, fcsets, 1,
3478 fcpattern, &fcres);
3479
3480 /*
3481 * Overwrite or create the new cache entry.
3482 */
3483 if(frclen >= LEN(frc)) {
3484 frclen = LEN(frc) - 1;
3485 XftFontClose(xw.dpy, frc[frclen].font);
3486 frc[frclen].unicodep = 0;
3487 }
3488
3489 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3490 fontpattern);
3491 frc[frclen].flags = frcflags;
3492 frc[frclen].unicodep = unicodep;
3493
3494 i = frclen;
3495 frclen++;
3496
3497 FcPatternDestroy(fcpattern);
3498 FcCharSetDestroy(fccharset);
3499 }
3500
3501 XftDrawStringUtf8(xw.draw, fg, frc[i].font,
3502 xp, winy + frc[i].font->ascent,
3503 (FcChar8 *)u8c, u8cblen);
3504
3505 xp += xw.cw * wcwidth(unicodep);
3506 }
3507
3508 /*
3509 * This is how the loop above actually should be. Why does the
3510 * application have to care about font details?
3511 *
3512 * I have to repeat: Xft and Fontconfig are design failures.
3513 */
3514 /*
3515 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
3516 winy + font->ascent, (FcChar8 *)s, bytelen);
3517 */
3518
3519 if(base.mode & ATTR_UNDERLINE) {
3520 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
3521 width, 1);
3522 }
3523
3524 if(base.mode & ATTR_STRUCK) {
3525 XftDrawRect(xw.draw, fg, winx, winy + 2 * font->ascent / 3,
3526 width, 1);
3527 }
3528
3529 /* Reset clip to none. */
3530 XftDrawSetClip(xw.draw, 0);
3531 }
3532
3533 void
3534 xdrawglyph(Glyph g, int x, int y) {
3535 static char buf[UTF_SIZ];
3536 size_t len = utf8encode(g.u, buf);
3537 int width = g.mode & ATTR_WIDE ? 2 : 1;
3538
3539 xdraws(buf, g, x, y, width, len);
3540 }
3541
3542 void
3543 xdrawcursor(void) {
3544 static int oldx = 0, oldy = 0;
3545 int curx;
3546 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs};
3547
3548 LIMIT(oldx, 0, term.col-1);
3549 LIMIT(oldy, 0, term.row-1);
3550
3551 curx = term.c.x;
3552
3553 /* adjust position if in dummy */
3554 if(term.line[oldy][oldx].mode & ATTR_WDUMMY)
3555 oldx--;
3556 if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3557 curx--;
3558
3559 g.u = term.line[term.c.y][term.c.x].u;
3560
3561 /* remove the old cursor */
3562 xdrawglyph(term.line[oldy][oldx], oldx, oldy);
3563
3564 if(IS_SET(MODE_HIDE))
3565 return;
3566
3567 /* draw the new one */
3568 if(xw.state & WIN_FOCUSED) {
3569 switch (xw.cursor) {
3570 case 0: /* Blinking Block */
3571 case 1: /* Blinking Block (Default) */
3572 case 2: /* Steady Block */
3573 if(IS_SET(MODE_REVERSE)) {
3574 g.mode |= ATTR_REVERSE;
3575 g.fg = defaultcs;
3576 g.bg = defaultfg;
3577 }
3578
3579 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
3580 xdrawglyph(g, term.c.x, term.c.y);
3581 break;
3582 case 3: /* Blinking Underline */
3583 case 4: /* Steady Underline */
3584 XftDrawRect(xw.draw, &dc.col[defaultcs],
3585 borderpx + curx * xw.cw,
3586 borderpx + (term.c.y + 1) * xw.ch - cursorthickness,
3587 xw.cw, cursorthickness);
3588 break;
3589 case 5: /* Blinking bar */
3590 case 6: /* Steady bar */
3591 XftDrawRect(xw.draw, &dc.col[defaultcs],
3592 borderpx + curx * xw.cw,
3593 borderpx + term.c.y * xw.ch,
3594 cursorthickness, xw.ch);
3595 break;
3596 }
3597 } else {
3598 XftDrawRect(xw.draw, &dc.col[defaultcs],
3599 borderpx + curx * xw.cw,
3600 borderpx + term.c.y * xw.ch,
3601 xw.cw - 1, 1);
3602 XftDrawRect(xw.draw, &dc.col[defaultcs],
3603 borderpx + curx * xw.cw,
3604 borderpx + term.c.y * xw.ch,
3605 1, xw.ch - 1);
3606 XftDrawRect(xw.draw, &dc.col[defaultcs],
3607 borderpx + (curx + 1) * xw.cw - 1,
3608 borderpx + term.c.y * xw.ch,
3609 1, xw.ch - 1);
3610 XftDrawRect(xw.draw, &dc.col[defaultcs],
3611 borderpx + curx * xw.cw,
3612 borderpx + (term.c.y + 1) * xw.ch - 1,
3613 xw.cw, 1);
3614 }
3615 oldx = curx, oldy = term.c.y;
3616 }
3617
3618
3619 void
3620 xsettitle(char *p) {
3621 XTextProperty prop;
3622
3623 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3624 &prop);
3625 XSetWMName(xw.dpy, xw.win, &prop);
3626 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3627 XFree(prop.value);
3628 }
3629
3630 void
3631 xresettitle(void) {
3632 xsettitle(opt_title ? opt_title : "st");
3633 }
3634
3635 void
3636 redraw(void) {
3637 tfulldirt();
3638 draw();
3639 }
3640
3641 void
3642 draw(void) {
3643 drawregion(0, 0, term.col, term.row);
3644 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3645 xw.h, 0, 0);
3646 XSetForeground(xw.dpy, dc.gc,
3647 dc.col[IS_SET(MODE_REVERSE)?
3648 defaultfg : defaultbg].pixel);
3649 }
3650
3651 void
3652 drawregion(int x1, int y1, int x2, int y2) {
3653 int ic, ib, x, y, ox;
3654 Glyph base, new;
3655 char buf[DRAW_BUF_SIZ];
3656 bool ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3657
3658 if(!(xw.state & WIN_VISIBLE))
3659 return;
3660
3661 for(y = y1; y < y2; y++) {
3662 if(!term.dirty[y])
3663 continue;
3664
3665 xtermclear(0, y, term.col, y);
3666 term.dirty[y] = 0;
3667 base = term.line[y][0];
3668 ic = ib = ox = 0;
3669 for(x = x1; x < x2; x++) {
3670 new = term.line[y][x];
3671 if(new.mode == ATTR_WDUMMY)
3672 continue;
3673 if(ena_sel && selected(x, y))
3674 new.mode ^= ATTR_REVERSE;
3675 if(ib > 0 && (ATTRCMP(base, new)
3676 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
3677 xdraws(buf, base, ox, y, ic, ib);
3678 ic = ib = 0;
3679 }
3680 if(ib == 0) {
3681 ox = x;
3682 base = new;
3683 }
3684
3685 ib += utf8encode(new.u, buf+ib);
3686 ic += (new.mode & ATTR_WIDE)? 2 : 1;
3687 }
3688 if(ib > 0)
3689 xdraws(buf, base, ox, y, ic, ib);
3690 }
3691 xdrawcursor();
3692 }
3693
3694 void
3695 expose(XEvent *ev) {
3696 redraw();
3697 }
3698
3699 void
3700 visibility(XEvent *ev) {
3701 XVisibilityEvent *e = &ev->xvisibility;
3702
3703 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
3704 }
3705
3706 void
3707 unmap(XEvent *ev) {
3708 xw.state &= ~WIN_VISIBLE;
3709 }
3710
3711 void
3712 xsetpointermotion(int set) {
3713 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
3714 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
3715 }
3716
3717 void
3718 xseturgency(int add) {
3719 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3720
3721 MODBIT(h->flags, add, XUrgencyHint);
3722 XSetWMHints(xw.dpy, xw.win, h);
3723 XFree(h);
3724 }
3725
3726 void
3727 focus(XEvent *ev) {
3728 XFocusChangeEvent *e = &ev->xfocus;
3729
3730 if(e->mode == NotifyGrab)
3731 return;
3732
3733 if(ev->type == FocusIn) {
3734 XSetICFocus(xw.xic);
3735 xw.state |= WIN_FOCUSED;
3736 xseturgency(0);
3737 if(IS_SET(MODE_FOCUS))
3738 ttywrite("\033[I", 3);
3739 } else {
3740 XUnsetICFocus(xw.xic);
3741 xw.state &= ~WIN_FOCUSED;
3742 if(IS_SET(MODE_FOCUS))
3743 ttywrite("\033[O", 3);
3744 }
3745 }
3746
3747 bool
3748 match(uint mask, uint state) {
3749 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
3750 }
3751
3752 void
3753 numlock(const Arg *dummy) {
3754 term.numlock ^= 1;
3755 }
3756
3757 char*
3758 kmap(KeySym k, uint state) {
3759 Key *kp;
3760 int i;
3761
3762 /* Check for mapped keys out of X11 function keys. */
3763 for(i = 0; i < LEN(mappedkeys); i++) {
3764 if(mappedkeys[i] == k)
3765 break;
3766 }
3767 if(i == LEN(mappedkeys)) {
3768 if((k & 0xFFFF) < 0xFD00)
3769 return NULL;
3770 }
3771
3772 for(kp = key; kp < key + LEN(key); kp++) {
3773 if(kp->k != k)
3774 continue;
3775
3776 if(!match(kp->mask, state))
3777 continue;
3778
3779 if(IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
3780 continue;
3781 if(term.numlock && kp->appkey == 2)
3782 continue;
3783
3784 if(IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
3785 continue;
3786
3787 if(IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
3788 continue;
3789
3790 return kp->s;
3791 }
3792
3793 return NULL;
3794 }
3795
3796 void
3797 kpress(XEvent *ev) {
3798 XKeyEvent *e = &ev->xkey;
3799 KeySym ksym;
3800 char buf[32], *customkey;
3801 int len;
3802 long c;
3803 Status status;
3804 Shortcut *bp;
3805
3806 if(IS_SET(MODE_KBDLOCK))
3807 return;
3808
3809 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
3810 /* 1. shortcuts */
3811 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3812 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3813 bp->func(&(bp->arg));
3814 return;
3815 }
3816 }
3817
3818 /* 2. custom keys from config.h */
3819 if((customkey = kmap(ksym, e->state))) {
3820 ttysend(customkey, strlen(customkey));
3821 return;
3822 }
3823
3824 /* 3. composed string from input method */
3825 if(len == 0)
3826 return;
3827 if(len == 1 && e->state & Mod1Mask) {
3828 if(IS_SET(MODE_8BIT)) {
3829 if(*buf < 0177) {
3830 c = *buf | 0x80;
3831 len = utf8encode(c, buf);
3832 }
3833 } else {
3834 buf[1] = buf[0];
3835 buf[0] = '\033';
3836 len = 2;
3837 }
3838 }
3839 ttysend(buf, len);
3840 }
3841
3842
3843 void
3844 cmessage(XEvent *e) {
3845 /*
3846 * See xembed specs
3847 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3848 */
3849 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3850 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3851 xw.state |= WIN_FOCUSED;
3852 xseturgency(0);
3853 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3854 xw.state &= ~WIN_FOCUSED;
3855 }
3856 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3857 /* Send SIGHUP to shell */
3858 kill(pid, SIGHUP);
3859 exit(EXIT_SUCCESS);
3860 }
3861 }
3862
3863 void
3864 cresize(int width, int height) {
3865 int col, row;
3866
3867 if(width != 0)
3868 xw.w = width;
3869 if(height != 0)
3870 xw.h = height;
3871
3872 col = (xw.w - 2 * borderpx) / xw.cw;
3873 row = (xw.h - 2 * borderpx) / xw.ch;
3874
3875 tresize(col, row);
3876 xresize(col, row);
3877 ttyresize();
3878 }
3879
3880 void
3881 resize(XEvent *e) {
3882 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3883 return;
3884
3885 cresize(e->xconfigure.width, e->xconfigure.height);
3886 }
3887
3888 void
3889 run(void) {
3890 XEvent ev;
3891 int w = xw.w, h = xw.h;
3892 fd_set rfd;
3893 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
3894 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
3895 long deltatime;
3896
3897 /* Waiting for window mapping */
3898 do {
3899 XNextEvent(xw.dpy, &ev);
3900 if(ev.type == ConfigureNotify) {
3901 w = ev.xconfigure.width;
3902 h = ev.xconfigure.height;
3903 }
3904 } while(ev.type != MapNotify);
3905
3906 ttynew();
3907 cresize(w, h);
3908
3909 clock_gettime(CLOCK_MONOTONIC, &last);
3910 lastblink = last;
3911
3912 for(xev = actionfps;;) {
3913 FD_ZERO(&rfd);
3914 FD_SET(cmdfd, &rfd);
3915 FD_SET(xfd, &rfd);
3916
3917 if(pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
3918 if(errno == EINTR)
3919 continue;
3920 die("select failed: %s\n", strerror(errno));
3921 }
3922 if(FD_ISSET(cmdfd, &rfd)) {
3923 ttyread();
3924 if(blinktimeout) {
3925 blinkset = tattrset(ATTR_BLINK);
3926 if(!blinkset)
3927 MODBIT(term.mode, 0, MODE_BLINK);
3928 }
3929 }
3930
3931 if(FD_ISSET(xfd, &rfd))
3932 xev = actionfps;
3933
3934 clock_gettime(CLOCK_MONOTONIC, &now);
3935 drawtimeout.tv_sec = 0;
3936 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
3937 tv = &drawtimeout;
3938
3939 dodraw = 0;
3940 if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
3941 tsetdirtattr(ATTR_BLINK);
3942 term.mode ^= MODE_BLINK;
3943 lastblink = now;
3944 dodraw = 1;
3945 }
3946 deltatime = TIMEDIFF(now, last);
3947 if(deltatime > 1000 / (xev ? xfps : actionfps)) {
3948 dodraw = 1;
3949 last = now;
3950 }
3951
3952 if(dodraw) {
3953 while(XPending(xw.dpy)) {
3954 XNextEvent(xw.dpy, &ev);
3955 if(XFilterEvent(&ev, None))
3956 continue;
3957 if(handler[ev.type])
3958 (handler[ev.type])(&ev);
3959 }
3960
3961 draw();
3962 XFlush(xw.dpy);
3963
3964 if(xev && !FD_ISSET(xfd, &rfd))
3965 xev--;
3966 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
3967 if(blinkset) {
3968 if(TIMEDIFF(now, lastblink) \
3969 > blinktimeout) {
3970 drawtimeout.tv_nsec = 1000;
3971 } else {
3972 drawtimeout.tv_nsec = (1E6 * \
3973 (blinktimeout - \
3974 TIMEDIFF(now,
3975 lastblink)));
3976 }
3977 drawtimeout.tv_sec = \
3978 drawtimeout.tv_nsec / 1E9;
3979 drawtimeout.tv_nsec %= (long)1E9;
3980 } else {
3981 tv = NULL;
3982 }
3983 }
3984 }
3985 }
3986 }
3987
3988 void
3989 usage(void) {
3990 die("%s " VERSION " (c) 2010-2015 st engineers\n"
3991 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
3992 " [-i] [-t title] [-w windowid] [-e command ...] [command ...]\n"
3993 " st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
3994 " [-i] [-t title] [-w windowid] [-l line] [stty_args ...]\n",
3995 argv0);
3996 }
3997
3998 int
3999 main(int argc, char *argv[]) {
4000 uint cols = 80, rows = 24;
4001
4002 xw.l = xw.t = 0;
4003 xw.isfixed = False;
4004 xw.cursor = 0;
4005
4006 ARGBEGIN {
4007 case 'a':
4008 allowaltscreen = false;
4009 break;
4010 case 'c':
4011 opt_class = EARGF(usage());
4012 break;
4013 case 'e':
4014 if(argc > 1)
4015 --argc, ++argv;
4016 goto run;
4017 case 'f':
4018 opt_font = EARGF(usage());
4019 break;
4020 case 'g':
4021 xw.gm = XParseGeometry(EARGF(usage()),
4022 &xw.l, &xw.t, &cols, &rows);
4023 break;
4024 case 'i':
4025 xw.isfixed = True;
4026 break;
4027 case 'o':
4028 opt_io = EARGF(usage());
4029 break;
4030 case 'l':
4031 opt_line = EARGF(usage());
4032 break;
4033 case 't':
4034 opt_title = EARGF(usage());
4035 break;
4036 case 'w':
4037 opt_embed = EARGF(usage());
4038 break;
4039 case 'v':
4040 default:
4041 usage();
4042 } ARGEND;
4043
4044 run:
4045 if(argc > 0) {
4046 /* eat all remaining arguments */
4047 opt_cmd = argv;
4048 if(!opt_title && !opt_line)
4049 opt_title = basename(xstrdup(argv[0]));
4050 }
4051 setlocale(LC_CTYPE, "");
4052 XSetLocaleModifiers("");
4053 tnew(MAX(cols, 1), MAX(rows, 1));
4054 xinit();
4055 selinit();
4056 run();
4057
4058 return 0;
4059 }
4060
simple terminal