Xinqi Bao's Git

projects / st.git / blob
summary | log | commit | diff | tree
history | raw | HEAD
Add missing function prototypes.
[st.git] / st.c
1 /* See LICENSE for licence details. */
2 #include <ctype.h>
3 #include <errno.h>
4 #include <fcntl.h>
5 #include <limits.h>
6 #include <locale.h>
7 #include <pwd.h>
8 #include <stdarg.h>
9 #include <stdbool.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include <signal.h>
14 #include <stdint.h>
15 #include <sys/ioctl.h>
16 #include <sys/select.h>
17 #include <sys/stat.h>
18 #include <sys/time.h>
19 #include <sys/types.h>
20 #include <sys/wait.h>
21 #include <time.h>
22 #include <unistd.h>
23 #include <libgen.h>
24 #include <X11/Xatom.h>
25 #include <X11/Xlib.h>
26 #include <X11/Xutil.h>
27 #include <X11/cursorfont.h>
28 #include <X11/keysym.h>
29 #include <X11/Xft/Xft.h>
30 #include <fontconfig/fontconfig.h>
31 #include <wchar.h>
32
33 #include "arg.h"
34
35 char *argv0;
36
37 #define Glyph Glyph_
38 #define Font Font_
39
40 #if defined(__linux)
41 #include <pty.h>
42 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
43 #include <util.h>
44 #elif defined(__FreeBSD__) || defined(__DragonFly__)
45 #include <libutil.h>
46 #endif
47
48
49 /* XEMBED messages */
50 #define XEMBED_FOCUS_IN 4
51 #define XEMBED_FOCUS_OUT 5
52
53 /* Arbitrary sizes */
54 #define UTF_INVALID 0xFFFD
55 #define UTF_SIZ 4
56 #define ESC_BUF_SIZ (128*UTF_SIZ)
57 #define ESC_ARG_SIZ 16
58 #define STR_BUF_SIZ ESC_BUF_SIZ
59 #define STR_ARG_SIZ ESC_ARG_SIZ
60 #define DRAW_BUF_SIZ 20*1024
61 #define XK_ANY_MOD UINT_MAX
62 #define XK_NO_MOD 0
63 #define XK_SWITCH_MOD (1<<13)
64
65 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
66
67 /* macros */
68 #define MIN(a, b) ((a) < (b) ? (a) : (b))
69 #define MAX(a, b) ((a) < (b) ? (b) : (a))
70 #define LEN(a) (sizeof(a) / sizeof(a)[0])
71 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
72 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
73 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f))
74 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
75 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
76 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
77 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
78 #define IS_SET(flag) ((term.mode & (flag)) != 0)
79 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
80 #define CEIL(x) (((x) != (int) (x)) ? (x) + 1 : (x))
81 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
82
83 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
84 #define IS_TRUECOL(x) (1 << 24 & (x))
85 #define TRUERED(x) (((x) & 0xff0000) >> 8)
86 #define TRUEGREEN(x) (((x) & 0xff00))
87 #define TRUEBLUE(x) (((x) & 0xff) << 8)
88
89
90 #define VT102ID "\033[?6c"
91
92 enum glyph_attribute {
93 ATTR_NULL = 0,
94 ATTR_REVERSE = 1,
95 ATTR_UNDERLINE = 2,
96 ATTR_BOLD = 4,
97 ATTR_GFX = 8,
98 ATTR_ITALIC = 16,
99 ATTR_BLINK = 32,
100 ATTR_WRAP = 64,
101 ATTR_WIDE = 128,
102 ATTR_WDUMMY = 256,
103 };
104
105 enum cursor_movement {
106 CURSOR_SAVE,
107 CURSOR_LOAD
108 };
109
110 enum cursor_state {
111 CURSOR_DEFAULT = 0,
112 CURSOR_WRAPNEXT = 1,
113 CURSOR_ORIGIN = 2
114 };
115
116 enum term_mode {
117 MODE_WRAP = 1,
118 MODE_INSERT = 2,
119 MODE_APPKEYPAD = 4,
120 MODE_ALTSCREEN = 8,
121 MODE_CRLF = 16,
122 MODE_MOUSEBTN = 32,
123 MODE_MOUSEMOTION = 64,
124 MODE_REVERSE = 128,
125 MODE_KBDLOCK = 256,
126 MODE_HIDE = 512,
127 MODE_ECHO = 1024,
128 MODE_APPCURSOR = 2048,
129 MODE_MOUSESGR = 4096,
130 MODE_8BIT = 8192,
131 MODE_BLINK = 16384,
132 MODE_FBLINK = 32768,
133 MODE_FOCUS = 65536,
134 MODE_MOUSEX10 = 131072,
135 MODE_MOUSEMANY = 262144,
136 MODE_BRCKTPASTE = 524288,
137 MODE_PRINT = 1048576,
138 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
139 |MODE_MOUSEMANY,
140 };
141
142 enum charset {
143 CS_GRAPHIC0,
144 CS_GRAPHIC1,
145 CS_UK,
146 CS_USA,
147 CS_MULTI,
148 CS_GER,
149 CS_FIN
150 };
151
152 enum escape_state {
153 ESC_START = 1,
154 ESC_CSI = 2,
155 ESC_STR = 4, /* DCS, OSC, PM, APC */
156 ESC_ALTCHARSET = 8,
157 ESC_STR_END = 16, /* a final string was encountered */
158 ESC_TEST = 32, /* Enter in test mode */
159 };
160
161 enum window_state {
162 WIN_VISIBLE = 1,
163 WIN_REDRAW = 2,
164 WIN_FOCUSED = 4
165 };
166
167 enum selection_type {
168 SEL_REGULAR = 1,
169 SEL_RECTANGULAR = 2
170 };
171
172 enum selection_snap {
173 SNAP_WORD = 1,
174 SNAP_LINE = 2
175 };
176
177 typedef unsigned char uchar;
178 typedef unsigned int uint;
179 typedef unsigned long ulong;
180 typedef unsigned short ushort;
181
182 typedef XftDraw *Draw;
183 typedef XftColor Colour;
184 typedef Colormap Colourmap;
185
186 typedef struct {
187 char c[UTF_SIZ]; /* character code */
188 ushort mode; /* attribute flags */
189 uint32_t fg; /* foreground */
190 uint32_t bg; /* background */
191 } Glyph;
192
193 typedef Glyph *Line;
194
195 typedef struct {
196 Glyph attr; /* current char attributes */
197 int x;
198 int y;
199 char state;
200 } TCursor;
201
202 /* CSI Escape sequence structs */
203 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
204 typedef struct {
205 char buf[ESC_BUF_SIZ]; /* raw string */
206 int len; /* raw string length */
207 char priv;
208 int arg[ESC_ARG_SIZ];
209 int narg; /* nb of args */
210 char mode;
211 } CSIEscape;
212
213 /* STR Escape sequence structs */
214 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
215 typedef struct {
216 char type; /* ESC type ... */
217 char buf[STR_BUF_SIZ]; /* raw string */
218 int len; /* raw string length */
219 char *args[STR_ARG_SIZ];
220 int narg; /* nb of args */
221 } STREscape;
222
223 /* Internal representation of the screen */
224 typedef struct {
225 int row; /* nb row */
226 int col; /* nb col */
227 Line *line; /* screen */
228 Line *alt; /* alternate screen */
229 bool *dirty; /* dirtyness of lines */
230 TCursor c; /* cursor */
231 int top; /* top scroll limit */
232 int bot; /* bottom scroll limit */
233 int mode; /* terminal mode flags */
234 int esc; /* escape state flags */
235 char trantbl[4]; /* charset table translation */
236 int charset; /* current charset */
237 int icharset; /* selected charset for sequence */
238 bool numlock; /* lock numbers in keyboard */
239 bool *tabs;
240 } Term;
241
242 /* Purely graphic info */
243 typedef struct {
244 Display *dpy;
245 Colourmap cmap;
246 Window win;
247 Drawable buf;
248 Atom xembed, wmdeletewin, netwmname, netwmpid;
249 XIM xim;
250 XIC xic;
251 Draw draw;
252 Visual *vis;
253 XSetWindowAttributes attrs;
254 int scr;
255 bool isfixed; /* is fixed geometry? */
256 int l, t; /* left and top offset */
257 int gm; /* geometry mask */
258 int tw, th; /* tty width and height */
259 int w, h; /* window width and height */
260 int ch; /* char height */
261 int cw; /* char width */
262 char state; /* focus, redraw, visible */
263 } XWindow;
264
265 typedef struct {
266 uint b;
267 uint mask;
268 char *s;
269 } Mousekey;
270
271 typedef struct {
272 KeySym k;
273 uint mask;
274 char *s;
275 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
276 signed char appkey; /* application keypad */
277 signed char appcursor; /* application cursor */
278 signed char crlf; /* crlf mode */
279 } Key;
280
281 typedef struct {
282 int mode;
283 int type;
284 int snap;
285 /*
286 * Selection variables:
287 * nb – normalized coordinates of the beginning of the selection
288 * ne – normalized coordinates of the end of the selection
289 * ob – original coordinates of the beginning of the selection
290 * oe – original coordinates of the end of the selection
291 */
292 struct {
293 int x, y;
294 } nb, ne, ob, oe;
295
296 char *clip;
297 Atom xtarget;
298 bool alt;
299 struct timeval tclick1;
300 struct timeval tclick2;
301 } Selection;
302
303 typedef union {
304 int i;
305 uint ui;
306 float f;
307 const void *v;
308 } Arg;
309
310 typedef struct {
311 uint mod;
312 KeySym keysym;
313 void (*func)(const Arg *);
314 const Arg arg;
315 } Shortcut;
316
317 /* function definitions used in config.h */
318 static void clippaste(const Arg *);
319 static void numlock(const Arg *);
320 static void selpaste(const Arg *);
321 static void xzoom(const Arg *);
322 static void printsel(const Arg *);
323 static void printscreen(const Arg *) ;
324 static void toggleprinter(const Arg *);
325
326 /* Config.h for applying patches and the configuration. */
327 #include "config.h"
328
329 /* Font structure */
330 typedef struct {
331 int height;
332 int width;
333 int ascent;
334 int descent;
335 short lbearing;
336 short rbearing;
337 XftFont *match;
338 FcFontSet *set;
339 FcPattern *pattern;
340 } Font;
341
342 /* Drawing Context */
343 typedef struct {
344 Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
345 Font font, bfont, ifont, ibfont;
346 GC gc;
347 } DC;
348
349 static void die(const char *, ...);
350 static void draw(void);
351 static void redraw(int);
352 static void drawregion(int, int, int, int);
353 static void execsh(void);
354 static void sigchld(int);
355 static void run(void);
356
357 static void csidump(void);
358 static void csihandle(void);
359 static void csiparse(void);
360 static void csireset(void);
361 static void strdump(void);
362 static void strhandle(void);
363 static void strparse(void);
364 static void strreset(void);
365
366 static int tattrset(int);
367 static void tprinter(char *, size_t);
368 static void tdumpsel(void);
369 static void tdumpline(int);
370 static void tdump(void);
371 static void tclearregion(int, int, int, int);
372 static void tcursor(int);
373 static void tdeletechar(int);
374 static void tdeleteline(int);
375 static void tinsertblank(int);
376 static void tinsertblankline(int);
377 static void tmoveto(int, int);
378 static void tmoveato(int, int);
379 static void tnew(int, int);
380 static void tnewline(int);
381 static void tputtab(int);
382 static void tputc(char *, int);
383 static void treset(void);
384 static int tresize(int, int);
385 static void tscrollup(int, int);
386 static void tscrolldown(int, int);
387 static void tsetattr(int *, int);
388 static void tsetchar(char *, Glyph *, int, int);
389 static void tsetscroll(int, int);
390 static void tswapscreen(void);
391 static void tsetdirt(int, int);
392 static void tsetdirtattr(int);
393 static void tsetmode(bool, bool, int *, int);
394 static void tfulldirt(void);
395 static void techo(char *, int);
396 static bool tcontrolcode(uchar );
397 static void tdectest(char );
398 static int32_t tdefcolor(int *, int *, int);
399 static void tselcs(void);
400 static void tdeftran(char);
401 static inline bool match(uint, uint);
402 static void dump(char c);
403 static void ttynew(void);
404 static void ttyread(void);
405 static void ttyresize(void);
406 static void ttysend(char *, size_t);
407 static void ttywrite(const char *, size_t);
408
409 static void xdraws(char *, Glyph, int, int, int, int);
410 static void xhints(void);
411 static void xclear(int, int, int, int);
412 static void xdrawcursor(void);
413 static void xinit(void);
414 static void xloadcols(void);
415 static int xsetcolorname(int, const char *);
416 static int xgeommasktogravity(int);
417 static int xloadfont(Font *, FcPattern *);
418 static void xloadfonts(char *, double);
419 static int xloadfontset(Font *);
420 static void xsettitle(char *);
421 static void xresettitle(void);
422 static void xsetpointermotion(int);
423 static void xseturgency(int);
424 static void xsetsel(char *);
425 static void xtermclear(int, int, int, int);
426 static void xunloadfont(Font *);
427 static void xunloadfonts(void);
428 static void xresize(int, int);
429
430 static void expose(XEvent *);
431 static void visibility(XEvent *);
432 static void unmap(XEvent *);
433 static char *kmap(KeySym, uint);
434 static void kpress(XEvent *);
435 static void cmessage(XEvent *);
436 static void cresize(int, int);
437 static void resize(XEvent *);
438 static void focus(XEvent *);
439 static void brelease(XEvent *);
440 static void bpress(XEvent *);
441 static void bmotion(XEvent *);
442 static void selnotify(XEvent *);
443 static void selclear(XEvent *);
444 static void selrequest(XEvent *);
445
446 static void selinit(void);
447 static void selsort(void);
448 static inline bool selected(int, int);
449 static char *getsel(void);
450 static void selcopy(void);
451 static void selscroll(int, int);
452 static void selsnap(int, int *, int *, int);
453 static void getbuttoninfo(XEvent *);
454 static void mousereport(XEvent *);
455
456 static size_t utf8decode(char *, long *, size_t);
457 static long utf8decodebyte(char, size_t *);
458 static size_t utf8encode(long, char *, size_t);
459 static char utf8encodebyte(long, size_t);
460 static size_t utf8len(char *);
461 static size_t utf8validate(long *, size_t);
462
463 static ssize_t xwrite(int, const char *, size_t);
464 static void *xmalloc(size_t);
465 static void *xrealloc(void *, size_t);
466 static char *xstrdup(char *);
467
468 static void usage(void);
469
470 static void (*handler[LASTEvent])(XEvent *) = {
471 [KeyPress] = kpress,
472 [ClientMessage] = cmessage,
473 [ConfigureNotify] = resize,
474 [VisibilityNotify] = visibility,
475 [UnmapNotify] = unmap,
476 [Expose] = expose,
477 [FocusIn] = focus,
478 [FocusOut] = focus,
479 [MotionNotify] = bmotion,
480 [ButtonPress] = bpress,
481 [ButtonRelease] = brelease,
482 [SelectionClear] = selclear,
483 [SelectionNotify] = selnotify,
484 [SelectionRequest] = selrequest,
485 };
486
487 /* Globals */
488 static DC dc;
489 static XWindow xw;
490 static Term term;
491 static CSIEscape csiescseq;
492 static STREscape strescseq;
493 static int cmdfd;
494 static pid_t pid;
495 static Selection sel;
496 static int iofd = STDOUT_FILENO;
497 static char **opt_cmd = NULL;
498 static char *opt_io = NULL;
499 static char *opt_title = NULL;
500 static char *opt_embed = NULL;
501 static char *opt_class = NULL;
502 static char *opt_font = NULL;
503 static int oldbutton = 3; /* button event on startup: 3 = release */
504
505 static char *usedfont = NULL;
506 static double usedfontsize = 0;
507
508 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
509 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
510 static long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
511 static long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
512
513 /* Font Ring Cache */
514 enum {
515 FRC_NORMAL,
516 FRC_ITALIC,
517 FRC_BOLD,
518 FRC_ITALICBOLD
519 };
520
521 typedef struct {
522 XftFont *font;
523 int flags;
524 } Fontcache;
525
526 /* Fontcache is an array now. A new font will be appended to the array. */
527 static Fontcache frc[16];
528 static int frclen = 0;
529
530 ssize_t
531 xwrite(int fd, const char *s, size_t len) {
532 size_t aux = len;
533
534 while(len > 0) {
535 ssize_t r = write(fd, s, len);
536 if(r < 0)
537 return r;
538 len -= r;
539 s += r;
540 }
541 return aux;
542 }
543
544 void *
545 xmalloc(size_t len) {
546 void *p = malloc(len);
547
548 if(!p)
549 die("Out of memory\n");
550
551 return p;
552 }
553
554 void *
555 xrealloc(void *p, size_t len) {
556 if((p = realloc(p, len)) == NULL)
557 die("Out of memory\n");
558
559 return p;
560 }
561
562 char *
563 xstrdup(char *s) {
564 if((s = strdup(s)) == NULL)
565 die("Out of memory\n");
566
567 return s;
568 }
569
570 size_t
571 utf8decode(char *c, long *u, size_t clen) {
572 size_t i, j, len, type;
573 long udecoded;
574
575 *u = UTF_INVALID;
576 if(!clen)
577 return 0;
578 udecoded = utf8decodebyte(c[0], &len);
579 if(!BETWEEN(len, 1, UTF_SIZ))
580 return 1;
581 for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
582 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
583 if(type != 0)
584 return j;
585 }
586 if(j < len)
587 return 0;
588 *u = udecoded;
589 utf8validate(u, len);
590 return len;
591 }
592
593 long
594 utf8decodebyte(char c, size_t *i) {
595 for(*i = 0; *i < LEN(utfmask); ++(*i))
596 if(((uchar)c & utfmask[*i]) == utfbyte[*i])
597 return (uchar)c & ~utfmask[*i];
598 return 0;
599 }
600
601 size_t
602 utf8encode(long u, char *c, size_t clen) {
603 size_t len, i;
604
605 len = utf8validate(&u, 0);
606 if(clen < len)
607 return 0;
608 for(i = len - 1; i != 0; --i) {
609 c[i] = utf8encodebyte(u, 0);
610 u >>= 6;
611 }
612 c[0] = utf8encodebyte(u, len);
613 return len;
614 }
615
616 char
617 utf8encodebyte(long u, size_t i) {
618 return utfbyte[i] | (u & ~utfmask[i]);
619 }
620
621 size_t
622 utf8len(char *c) {
623 return utf8decode(c, &(long){0}, UTF_SIZ);
624 }
625
626 size_t
627 utf8validate(long *u, size_t i) {
628 if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
629 *u = UTF_INVALID;
630 for(i = 1; *u > utfmax[i]; ++i)
631 ;
632 return i;
633 }
634
635 static void
636 selinit(void) {
637 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
638 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
639 sel.mode = 0;
640 sel.ob.x = -1;
641 sel.clip = NULL;
642 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
643 if(sel.xtarget == None)
644 sel.xtarget = XA_STRING;
645 }
646
647 static int
648 x2col(int x) {
649 x -= borderpx;
650 x /= xw.cw;
651
652 return LIMIT(x, 0, term.col-1);
653 }
654
655 static int
656 y2row(int y) {
657 y -= borderpx;
658 y /= xw.ch;
659
660 return LIMIT(y, 0, term.row-1);
661 }
662
663 static void
664 selsort(void) {
665 if(sel.ob.y == sel.oe.y) {
666 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
667 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
668 } else {
669 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
670 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
671 }
672 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
673 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
674 }
675
676 static inline bool
677 selected(int x, int y) {
678 if(sel.ne.y == y && sel.nb.y == y)
679 return BETWEEN(x, sel.nb.x, sel.ne.x);
680
681 if(sel.type == SEL_RECTANGULAR) {
682 return ((sel.nb.y <= y && y <= sel.ne.y)
683 && (sel.nb.x <= x && x <= sel.ne.x));
684 }
685
686 return ((sel.nb.y < y && y < sel.ne.y)
687 || (y == sel.ne.y && x <= sel.ne.x))
688 || (y == sel.nb.y && x >= sel.nb.x
689 && (x <= sel.ne.x || sel.nb.y != sel.ne.y));
690 }
691
692 void
693 selsnap(int mode, int *x, int *y, int direction) {
694 int i;
695
696 switch(mode) {
697 case SNAP_WORD:
698 /*
699 * Snap around if the word wraps around at the end or
700 * beginning of a line.
701 */
702 for(;;) {
703 if(direction < 0 && *x <= 0) {
704 if(*y > 0 && term.line[*y - 1][term.col-1].mode
705 & ATTR_WRAP) {
706 *y -= 1;
707 *x = term.col-1;
708 } else {
709 break;
710 }
711 }
712 if(direction > 0 && *x >= term.col-1) {
713 if(*y < term.row-1 && term.line[*y][*x].mode
714 & ATTR_WRAP) {
715 *y += 1;
716 *x = 0;
717 } else {
718 break;
719 }
720 }
721
722 if(term.line[*y][*x+direction].mode & ATTR_WDUMMY) {
723 *x += direction;
724 continue;
725 }
726
727 if(strchr(worddelimiters,
728 term.line[*y][*x+direction].c[0])) {
729 break;
730 }
731
732 *x += direction;
733 }
734 break;
735 case SNAP_LINE:
736 /*
737 * Snap around if the the previous line or the current one
738 * has set ATTR_WRAP at its end. Then the whole next or
739 * previous line will be selected.
740 */
741 *x = (direction < 0) ? 0 : term.col - 1;
742 if(direction < 0 && *y > 0) {
743 for(; *y > 0; *y += direction) {
744 if(!(term.line[*y-1][term.col-1].mode
745 & ATTR_WRAP)) {
746 break;
747 }
748 }
749 } else if(direction > 0 && *y < term.row-1) {
750 for(; *y < term.row; *y += direction) {
751 if(!(term.line[*y][term.col-1].mode
752 & ATTR_WRAP)) {
753 break;
754 }
755 }
756 }
757 break;
758 default:
759 /*
760 * Select the whole line when the end of line is reached.
761 */
762 if(direction > 0) {
763 i = term.col;
764 while(--i > 0 && term.line[*y][i].c[0] == ' ')
765 /* nothing */;
766 if(i > 0 && i < *x)
767 *x = term.col - 1;
768 }
769 break;
770 }
771 }
772
773 void
774 getbuttoninfo(XEvent *e) {
775 int type;
776 uint state = e->xbutton.state &~Button1Mask;
777
778 sel.alt = IS_SET(MODE_ALTSCREEN);
779
780 sel.oe.x = x2col(e->xbutton.x);
781 sel.oe.y = y2row(e->xbutton.y);
782
783 if(sel.ob.y < sel.oe.y
784 || (sel.ob.y == sel.oe.y && sel.ob.x < sel.oe.x)) {
785 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
786 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
787 } else {
788 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, -1);
789 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, +1);
790 }
791 selsort();
792
793 sel.type = SEL_REGULAR;
794 for(type = 1; type < LEN(selmasks); ++type) {
795 if(match(selmasks[type], state)) {
796 sel.type = type;
797 break;
798 }
799 }
800 }
801
802 void
803 mousereport(XEvent *e) {
804 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
805 button = e->xbutton.button, state = e->xbutton.state,
806 len;
807 char buf[40];
808 static int ox, oy;
809
810 /* from urxvt */
811 if(e->xbutton.type == MotionNotify) {
812 if(x == ox && y == oy)
813 return;
814 if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
815 return;
816 /* MOUSE_MOTION: no reporting if no button is pressed */
817 if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
818 return;
819
820 button = oldbutton + 32;
821 ox = x;
822 oy = y;
823 } else {
824 if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
825 button = 3;
826 } else {
827 button -= Button1;
828 if(button >= 3)
829 button += 64 - 3;
830 }
831 if(e->xbutton.type == ButtonPress) {
832 oldbutton = button;
833 ox = x;
834 oy = y;
835 } else if(e->xbutton.type == ButtonRelease) {
836 oldbutton = 3;
837 /* MODE_MOUSEX10: no button release reporting */
838 if(IS_SET(MODE_MOUSEX10))
839 return;
840 }
841 }
842
843 if(!IS_SET(MODE_MOUSEX10)) {
844 button += (state & ShiftMask ? 4 : 0)
845 + (state & Mod4Mask ? 8 : 0)
846 + (state & ControlMask ? 16 : 0);
847 }
848
849 len = 0;
850 if(IS_SET(MODE_MOUSESGR)) {
851 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
852 button, x+1, y+1,
853 e->xbutton.type == ButtonRelease ? 'm' : 'M');
854 } else if(x < 223 && y < 223) {
855 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
856 32+button, 32+x+1, 32+y+1);
857 } else {
858 return;
859 }
860
861 ttywrite(buf, len);
862 }
863
864 void
865 bpress(XEvent *e) {
866 struct timeval now;
867 Mousekey *mk;
868
869 if(IS_SET(MODE_MOUSE)) {
870 mousereport(e);
871 return;
872 }
873
874 for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
875 if(e->xbutton.button == mk->b
876 && match(mk->mask, e->xbutton.state)) {
877 ttysend(mk->s, strlen(mk->s));
878 return;
879 }
880 }
881
882 if(e->xbutton.button == Button1) {
883 gettimeofday(&now, NULL);
884
885 /* Clear previous selection, logically and visually. */
886 selclear(NULL);
887 sel.mode = 1;
888 sel.type = SEL_REGULAR;
889 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
890 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
891
892 /*
893 * If the user clicks below predefined timeouts specific
894 * snapping behaviour is exposed.
895 */
896 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
897 sel.snap = SNAP_LINE;
898 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
899 sel.snap = SNAP_WORD;
900 } else {
901 sel.snap = 0;
902 }
903 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
904 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
905 selsort();
906
907 /*
908 * Draw selection, unless it's regular and we don't want to
909 * make clicks visible
910 */
911 if(sel.snap != 0) {
912 sel.mode++;
913 tsetdirt(sel.nb.y, sel.ne.y);
914 }
915 sel.tclick2 = sel.tclick1;
916 sel.tclick1 = now;
917 }
918 }
919
920 char *
921 getsel(void) {
922 char *str, *ptr;
923 int x, y, bufsize, size, i, ex;
924 Glyph *gp, *last;
925
926 if(sel.ob.x == -1) {
927 str = NULL;
928 } else {
929 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
930 ptr = str = xmalloc(bufsize);
931
932 /* append every set & selected glyph to the selection */
933 for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
934 gp = &term.line[y][0];
935 last = &gp[term.col-1];
936
937 while(last >= gp && !(selected(last - gp, y) &&
938 strcmp(last->c, " ") != 0)) {
939 --last;
940 }
941
942 for(x = 0; gp <= last; x++, ++gp) {
943 if(!selected(x, y) || (gp->mode & ATTR_WDUMMY))
944 continue;
945
946 size = utf8len(gp->c);
947 memcpy(ptr, gp->c, size);
948 ptr += size;
949 }
950
951 /*
952 * Copy and pasting of line endings is inconsistent
953 * in the inconsistent terminal and GUI world.
954 * The best solution seems like to produce '\n' when
955 * something is copied from st and convert '\n' to
956 * '\r', when something to be pasted is received by
957 * st.
958 * FIXME: Fix the computer world.
959 */
960 if(y < sel.ne.y && x > 0 && !((gp-1)->mode & ATTR_WRAP))
961 *ptr++ = '\n';
962
963 /*
964 * If the last selected line expands in the selection
965 * after the visible text '\n' is appended.
966 */
967 if(y == sel.ne.y) {
968 i = term.col;
969 while(--i > 0 && term.line[y][i].c[0] == ' ')
970 /* nothing */;
971 ex = sel.ne.x;
972 if(sel.nb.y == sel.ne.y && sel.ne.x < sel.nb.x)
973 ex = sel.nb.x;
974 if(i < ex)
975 *ptr++ = '\n';
976 }
977 }
978 *ptr = 0;
979 }
980 return str;
981 }
982
983 void
984 selcopy(void) {
985 xsetsel(getsel());
986 }
987
988 void
989 selnotify(XEvent *e) {
990 ulong nitems, ofs, rem;
991 int format;
992 uchar *data, *last, *repl;
993 Atom type;
994
995 ofs = 0;
996 do {
997 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
998 False, AnyPropertyType, &type, &format,
999 &nitems, &rem, &data)) {
1000 fprintf(stderr, "Clipboard allocation failed\n");
1001 return;
1002 }
1003
1004 /*
1005 * As seen in getsel:
1006 * Line endings are inconsistent in the terminal and GUI world
1007 * copy and pasting. When receiving some selection data,
1008 * replace all '\n' with '\r'.
1009 * FIXME: Fix the computer world.
1010 */
1011 repl = data;
1012 last = data + nitems * format / 8;
1013 while((repl = memchr(repl, '\n', last - repl))) {
1014 *repl++ = '\r';
1015 }
1016
1017 if(IS_SET(MODE_BRCKTPASTE))
1018 ttywrite("\033[200~", 6);
1019 ttysend((char *)data, nitems * format / 8);
1020 if(IS_SET(MODE_BRCKTPASTE))
1021 ttywrite("\033[201~", 6);
1022 XFree(data);
1023 /* number of 32-bit chunks returned */
1024 ofs += nitems * format / 32;
1025 } while(rem > 0);
1026 }
1027
1028 void
1029 selpaste(const Arg *dummy) {
1030 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1031 xw.win, CurrentTime);
1032 }
1033
1034 void
1035 clippaste(const Arg *dummy) {
1036 Atom clipboard;
1037
1038 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1039 XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
1040 xw.win, CurrentTime);
1041 }
1042
1043 void
1044 selclear(XEvent *e) {
1045 if(sel.ob.x == -1)
1046 return;
1047 sel.ob.x = -1;
1048 tsetdirt(sel.nb.y, sel.ne.y);
1049 }
1050
1051 void
1052 selrequest(XEvent *e) {
1053 XSelectionRequestEvent *xsre;
1054 XSelectionEvent xev;
1055 Atom xa_targets, string;
1056
1057 xsre = (XSelectionRequestEvent *) e;
1058 xev.type = SelectionNotify;
1059 xev.requestor = xsre->requestor;
1060 xev.selection = xsre->selection;
1061 xev.target = xsre->target;
1062 xev.time = xsre->time;
1063 /* reject */
1064 xev.property = None;
1065
1066 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1067 if(xsre->target == xa_targets) {
1068 /* respond with the supported type */
1069 string = sel.xtarget;
1070 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1071 XA_ATOM, 32, PropModeReplace,
1072 (uchar *) &string, 1);
1073 xev.property = xsre->property;
1074 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
1075 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1076 xsre->target, 8, PropModeReplace,
1077 (uchar *) sel.clip, strlen(sel.clip));
1078 xev.property = xsre->property;
1079 }
1080
1081 /* all done, send a notification to the listener */
1082 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
1083 fprintf(stderr, "Error sending SelectionNotify event\n");
1084 }
1085
1086 void
1087 xsetsel(char *str) {
1088 /* register the selection for both the clipboard and the primary */
1089 Atom clipboard;
1090
1091 free(sel.clip);
1092 sel.clip = str;
1093
1094 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
1095
1096 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1097 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1098 }
1099
1100 void
1101 brelease(XEvent *e) {
1102 if(IS_SET(MODE_MOUSE)) {
1103 mousereport(e);
1104 return;
1105 }
1106
1107 if(e->xbutton.button == Button2) {
1108 selpaste(NULL);
1109 } else if(e->xbutton.button == Button1) {
1110 if(sel.mode < 2) {
1111 selclear(NULL);
1112 } else {
1113 getbuttoninfo(e);
1114 selcopy();
1115 }
1116 sel.mode = 0;
1117 tsetdirt(sel.nb.y, sel.ne.y);
1118 }
1119 }
1120
1121 void
1122 bmotion(XEvent *e) {
1123 int oldey, oldex, oldsby, oldsey;
1124
1125 if(IS_SET(MODE_MOUSE)) {
1126 mousereport(e);
1127 return;
1128 }
1129
1130 if(!sel.mode)
1131 return;
1132
1133 sel.mode++;
1134 oldey = sel.oe.y;
1135 oldex = sel.oe.x;
1136 oldsby = sel.nb.y;
1137 oldsey = sel.ne.y;
1138 getbuttoninfo(e);
1139
1140 if(oldey != sel.oe.y || oldex != sel.oe.x)
1141 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1142 }
1143
1144 void
1145 die(const char *errstr, ...) {
1146 va_list ap;
1147
1148 va_start(ap, errstr);
1149 vfprintf(stderr, errstr, ap);
1150 va_end(ap);
1151 exit(EXIT_FAILURE);
1152 }
1153
1154 void
1155 execsh(void) {
1156 char **args;
1157 char *envshell = getenv("SHELL");
1158 const struct passwd *pass = getpwuid(getuid());
1159 char buf[sizeof(long) * 8 + 1];
1160
1161 unsetenv("COLUMNS");
1162 unsetenv("LINES");
1163 unsetenv("TERMCAP");
1164
1165 if(pass) {
1166 setenv("LOGNAME", pass->pw_name, 1);
1167 setenv("USER", pass->pw_name, 1);
1168 setenv("SHELL", pass->pw_shell, 0);
1169 setenv("HOME", pass->pw_dir, 0);
1170 }
1171
1172 snprintf(buf, sizeof(buf), "%lu", xw.win);
1173 setenv("WINDOWID", buf, 1);
1174
1175 signal(SIGCHLD, SIG_DFL);
1176 signal(SIGHUP, SIG_DFL);
1177 signal(SIGINT, SIG_DFL);
1178 signal(SIGQUIT, SIG_DFL);
1179 signal(SIGTERM, SIG_DFL);
1180 signal(SIGALRM, SIG_DFL);
1181
1182 DEFAULT(envshell, shell);
1183 setenv("TERM", termname, 1);
1184 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
1185 execvp(args[0], args);
1186 exit(EXIT_FAILURE);
1187 }
1188
1189 void
1190 sigchld(int a) {
1191 int stat = 0;
1192
1193 if(waitpid(pid, &stat, 0) < 0)
1194 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1195
1196 if(WIFEXITED(stat)) {
1197 exit(WEXITSTATUS(stat));
1198 } else {
1199 exit(EXIT_FAILURE);
1200 }
1201 }
1202
1203 void
1204 ttynew(void) {
1205 int m, s;
1206 struct winsize w = {term.row, term.col, 0, 0};
1207
1208 /* seems to work fine on linux, openbsd and freebsd */
1209 if(openpty(&m, &s, NULL, NULL, &w) < 0)
1210 die("openpty failed: %s\n", strerror(errno));
1211
1212 switch(pid = fork()) {
1213 case -1:
1214 die("fork failed\n");
1215 break;
1216 case 0:
1217 setsid(); /* create a new process group */
1218 dup2(s, STDIN_FILENO);
1219 dup2(s, STDOUT_FILENO);
1220 dup2(s, STDERR_FILENO);
1221 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1222 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1223 close(s);
1224 close(m);
1225 execsh();
1226 break;
1227 default:
1228 close(s);
1229 cmdfd = m;
1230 signal(SIGCHLD, sigchld);
1231 if(opt_io) {
1232 term.mode |= MODE_PRINT;
1233 iofd = (!strcmp(opt_io, "-")) ?
1234 STDOUT_FILENO :
1235 open(opt_io, O_WRONLY | O_CREAT, 0666);
1236 if(iofd < 0) {
1237 fprintf(stderr, "Error opening %s:%s\n",
1238 opt_io, strerror(errno));
1239 }
1240 }
1241 break;
1242 }
1243 }
1244
1245 void
1246 dump(char c) {
1247 static int col;
1248
1249 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
1250 if(++col % 10 == 0)
1251 fprintf(stderr, "\n");
1252 }
1253
1254 void
1255 ttyread(void) {
1256 static char buf[BUFSIZ];
1257 static int buflen = 0;
1258 char *ptr;
1259 char s[UTF_SIZ];
1260 int charsize; /* size of utf8 char in bytes */
1261 long unicodep;
1262 int ret;
1263
1264 /* append read bytes to unprocessed bytes */
1265 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1266 die("Couldn't read from shell: %s\n", strerror(errno));
1267
1268 /* process every complete utf8 char */
1269 buflen += ret;
1270 ptr = buf;
1271 while((charsize = utf8decode(ptr, &unicodep, buflen))) {
1272 utf8encode(unicodep, s, UTF_SIZ);
1273 tputc(s, charsize);
1274 ptr += charsize;
1275 buflen -= charsize;
1276 }
1277
1278 /* keep any uncomplete utf8 char for the next call */
1279 memmove(buf, ptr, buflen);
1280 }
1281
1282 void
1283 ttywrite(const char *s, size_t n) {
1284 if(xwrite(cmdfd, s, n) == -1)
1285 die("write error on tty: %s\n", strerror(errno));
1286 }
1287
1288 void
1289 ttysend(char *s, size_t n) {
1290 ttywrite(s, n);
1291 if(IS_SET(MODE_ECHO))
1292 techo(s, n);
1293 }
1294
1295 void
1296 ttyresize(void) {
1297 struct winsize w;
1298
1299 w.ws_row = term.row;
1300 w.ws_col = term.col;
1301 w.ws_xpixel = xw.tw;
1302 w.ws_ypixel = xw.th;
1303 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1304 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1305 }
1306
1307 int
1308 tattrset(int attr) {
1309 int i, j;
1310
1311 for(i = 0; i < term.row-1; i++) {
1312 for(j = 0; j < term.col-1; j++) {
1313 if(term.line[i][j].mode & attr)
1314 return 1;
1315 }
1316 }
1317
1318 return 0;
1319 }
1320
1321 void
1322 tsetdirt(int top, int bot) {
1323 int i;
1324
1325 LIMIT(top, 0, term.row-1);
1326 LIMIT(bot, 0, term.row-1);
1327
1328 for(i = top; i <= bot; i++)
1329 term.dirty[i] = 1;
1330 }
1331
1332 void
1333 tsetdirtattr(int attr) {
1334 int i, j;
1335
1336 for(i = 0; i < term.row-1; i++) {
1337 for(j = 0; j < term.col-1; j++) {
1338 if(term.line[i][j].mode & attr) {
1339 tsetdirt(i, i);
1340 break;
1341 }
1342 }
1343 }
1344 }
1345
1346 void
1347 tfulldirt(void) {
1348 tsetdirt(0, term.row-1);
1349 }
1350
1351 void
1352 tcursor(int mode) {
1353 static TCursor c[2];
1354 bool alt = IS_SET(MODE_ALTSCREEN);
1355
1356 if(mode == CURSOR_SAVE) {
1357 c[alt] = term.c;
1358 } else if(mode == CURSOR_LOAD) {
1359 term.c = c[alt];
1360 tmoveto(c[alt].x, c[alt].y);
1361 }
1362 }
1363
1364 void
1365 treset(void) {
1366 uint i;
1367
1368 term.c = (TCursor){{
1369 .mode = ATTR_NULL,
1370 .fg = defaultfg,
1371 .bg = defaultbg
1372 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1373
1374 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1375 for(i = tabspaces; i < term.col; i += tabspaces)
1376 term.tabs[i] = 1;
1377 term.top = 0;
1378 term.bot = term.row - 1;
1379 term.mode = MODE_WRAP;
1380 memset(term.trantbl, sizeof(term.trantbl), CS_USA);
1381 term.charset = 0;
1382
1383 tclearregion(0, 0, term.col-1, term.row-1);
1384 tmoveto(0, 0);
1385 tcursor(CURSOR_SAVE);
1386 }
1387
1388 void
1389 tnew(int col, int row) {
1390 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1391 tresize(col, row);
1392 term.numlock = 1;
1393
1394 treset();
1395 }
1396
1397 void
1398 tswapscreen(void) {
1399 Line *tmp = term.line;
1400
1401 term.line = term.alt;
1402 term.alt = tmp;
1403 term.mode ^= MODE_ALTSCREEN;
1404 tfulldirt();
1405 }
1406
1407 void
1408 tscrolldown(int orig, int n) {
1409 int i;
1410 Line temp;
1411
1412 LIMIT(n, 0, term.bot-orig+1);
1413
1414 tsetdirt(orig, term.bot-n);
1415 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1416
1417 for(i = term.bot; i >= orig+n; i--) {
1418 temp = term.line[i];
1419 term.line[i] = term.line[i-n];
1420 term.line[i-n] = temp;
1421 }
1422
1423 selscroll(orig, n);
1424 }
1425
1426 void
1427 tscrollup(int orig, int n) {
1428 int i;
1429 Line temp;
1430
1431 LIMIT(n, 0, term.bot-orig+1);
1432
1433 tclearregion(0, orig, term.col-1, orig+n-1);
1434 tsetdirt(orig+n, term.bot);
1435
1436 for(i = orig; i <= term.bot-n; i++) {
1437 temp = term.line[i];
1438 term.line[i] = term.line[i+n];
1439 term.line[i+n] = temp;
1440 }
1441
1442 selscroll(orig, -n);
1443 }
1444
1445 void
1446 selscroll(int orig, int n) {
1447 if(sel.ob.x == -1)
1448 return;
1449
1450 if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1451 if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1452 selclear(NULL);
1453 return;
1454 }
1455 if(sel.type == SEL_RECTANGULAR) {
1456 if(sel.ob.y < term.top)
1457 sel.ob.y = term.top;
1458 if(sel.oe.y > term.bot)
1459 sel.oe.y = term.bot;
1460 } else {
1461 if(sel.ob.y < term.top) {
1462 sel.ob.y = term.top;
1463 sel.ob.x = 0;
1464 }
1465 if(sel.oe.y > term.bot) {
1466 sel.oe.y = term.bot;
1467 sel.oe.x = term.col;
1468 }
1469 }
1470 selsort();
1471 }
1472 }
1473
1474 void
1475 tnewline(int first_col) {
1476 int y = term.c.y;
1477
1478 if(y == term.bot) {
1479 tscrollup(term.top, 1);
1480 } else {
1481 y++;
1482 }
1483 tmoveto(first_col ? 0 : term.c.x, y);
1484 }
1485
1486 void
1487 csiparse(void) {
1488 char *p = csiescseq.buf, *np;
1489 long int v;
1490
1491 csiescseq.narg = 0;
1492 if(*p == '?') {
1493 csiescseq.priv = 1;
1494 p++;
1495 }
1496
1497 csiescseq.buf[csiescseq.len] = '\0';
1498 while(p < csiescseq.buf+csiescseq.len) {
1499 np = NULL;
1500 v = strtol(p, &np, 10);
1501 if(np == p)
1502 v = 0;
1503 if(v == LONG_MAX || v == LONG_MIN)
1504 v = -1;
1505 csiescseq.arg[csiescseq.narg++] = v;
1506 p = np;
1507 if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1508 break;
1509 p++;
1510 }
1511 csiescseq.mode = *p;
1512 }
1513
1514 /* for absolute user moves, when decom is set */
1515 void
1516 tmoveato(int x, int y) {
1517 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1518 }
1519
1520 void
1521 tmoveto(int x, int y) {
1522 int miny, maxy;
1523
1524 if(term.c.state & CURSOR_ORIGIN) {
1525 miny = term.top;
1526 maxy = term.bot;
1527 } else {
1528 miny = 0;
1529 maxy = term.row - 1;
1530 }
1531 LIMIT(x, 0, term.col-1);
1532 LIMIT(y, miny, maxy);
1533 term.c.state &= ~CURSOR_WRAPNEXT;
1534 term.c.x = x;
1535 term.c.y = y;
1536 }
1537
1538 void
1539 tsetchar(char *c, Glyph *attr, int x, int y) {
1540 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1541 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1542 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1543 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1544 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1545 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1546 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1547 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1548 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1549 };
1550
1551 /*
1552 * The table is proudly stolen from rxvt.
1553 */
1554 if(attr->mode & ATTR_GFX) {
1555 if(BETWEEN(c[0], 0x41, 0x7e) && vt100_0[c[0] - 0x41]) {
1556 c = vt100_0[c[0] - 0x41];
1557 }
1558 }
1559
1560 if(term.line[y][x].mode & ATTR_WIDE) {
1561 if(x+1 < term.col) {
1562 term.line[y][x+1].c[0] = ' ';
1563 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1564 }
1565 } else if(term.line[y][x].mode & ATTR_WDUMMY) {
1566 term.line[y][x-1].c[0] = ' ';
1567 term.line[y][x-1].mode &= ~ATTR_WIDE;
1568 }
1569
1570 term.dirty[y] = 1;
1571 term.line[y][x] = *attr;
1572 memcpy(term.line[y][x].c, c, UTF_SIZ);
1573 }
1574
1575 void
1576 tclearregion(int x1, int y1, int x2, int y2) {
1577 int x, y, temp;
1578
1579 if(x1 > x2)
1580 temp = x1, x1 = x2, x2 = temp;
1581 if(y1 > y2)
1582 temp = y1, y1 = y2, y2 = temp;
1583
1584 LIMIT(x1, 0, term.col-1);
1585 LIMIT(x2, 0, term.col-1);
1586 LIMIT(y1, 0, term.row-1);
1587 LIMIT(y2, 0, term.row-1);
1588
1589 for(y = y1; y <= y2; y++) {
1590 term.dirty[y] = 1;
1591 for(x = x1; x <= x2; x++) {
1592 if(selected(x, y))
1593 selclear(NULL);
1594 term.line[y][x] = term.c.attr;
1595 memcpy(term.line[y][x].c, " ", 2);
1596 }
1597 }
1598 }
1599
1600 void
1601 tdeletechar(int n) {
1602 int dst, src, size;
1603 Glyph *line;
1604
1605 LIMIT(n, 0, term.col - term.c.x);
1606
1607 dst = term.c.x;
1608 src = term.c.x + n;
1609 size = term.col - src;
1610 line = term.line[term.c.y];
1611
1612 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1613 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1614 }
1615
1616 void
1617 tinsertblank(int n) {
1618 int dst, src, size;
1619 Glyph *line;
1620
1621 LIMIT(n, 0, term.col - term.c.x);
1622
1623 dst = term.c.x + n;
1624 src = term.c.x;
1625 size = term.col - dst;
1626 line = term.line[term.c.y];
1627
1628 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1629 tclearregion(src, term.c.y, dst - 1, term.c.y);
1630 }
1631
1632 void
1633 tinsertblankline(int n) {
1634 if(BETWEEN(term.c.y, term.top, term.bot))
1635 tscrolldown(term.c.y, n);
1636 }
1637
1638 void
1639 tdeleteline(int n) {
1640 if(BETWEEN(term.c.y, term.top, term.bot))
1641 tscrollup(term.c.y, n);
1642 }
1643
1644 int32_t
1645 tdefcolor(int *attr, int *npar, int l) {
1646 int32_t idx = -1;
1647 uint r, g, b;
1648
1649 switch (attr[*npar + 1]) {
1650 case 2: /* direct colour in RGB space */
1651 if (*npar + 4 >= l) {
1652 fprintf(stderr,
1653 "erresc(38): Incorrect number of parameters (%d)\n",
1654 *npar);
1655 break;
1656 }
1657 r = attr[*npar + 2];
1658 g = attr[*npar + 3];
1659 b = attr[*npar + 4];
1660 *npar += 4;
1661 if(!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1662 fprintf(stderr, "erresc: bad rgb color (%d,%d,%d)\n",
1663 r, g, b);
1664 else
1665 idx = TRUECOLOR(r, g, b);
1666 break;
1667 case 5: /* indexed colour */
1668 if (*npar + 2 >= l) {
1669 fprintf(stderr,
1670 "erresc(38): Incorrect number of parameters (%d)\n",
1671 *npar);
1672 break;
1673 }
1674 *npar += 2;
1675 if(!BETWEEN(attr[*npar], 0, 255))
1676 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1677 else
1678 idx = attr[*npar];
1679 break;
1680 case 0: /* implemented defined (only foreground) */
1681 case 1: /* transparent */
1682 case 3: /* direct colour in CMY space */
1683 case 4: /* direct colour in CMYK space */
1684 default:
1685 fprintf(stderr,
1686 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1687 break;
1688 }
1689
1690 return idx;
1691 }
1692
1693 void
1694 tsetattr(int *attr, int l) {
1695 int i;
1696 int32_t idx;
1697
1698 for(i = 0; i < l; i++) {
1699 switch(attr[i]) {
1700 case 0:
1701 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE \
1702 | ATTR_BOLD | ATTR_ITALIC \
1703 | ATTR_BLINK);
1704 term.c.attr.fg = defaultfg;
1705 term.c.attr.bg = defaultbg;
1706 break;
1707 case 1:
1708 term.c.attr.mode |= ATTR_BOLD;
1709 break;
1710 case 3:
1711 term.c.attr.mode |= ATTR_ITALIC;
1712 break;
1713 case 4:
1714 term.c.attr.mode |= ATTR_UNDERLINE;
1715 break;
1716 case 5: /* slow blink */
1717 case 6: /* rapid blink */
1718 term.c.attr.mode |= ATTR_BLINK;
1719 break;
1720 case 7:
1721 term.c.attr.mode |= ATTR_REVERSE;
1722 break;
1723 case 21:
1724 case 22:
1725 term.c.attr.mode &= ~ATTR_BOLD;
1726 break;
1727 case 23:
1728 term.c.attr.mode &= ~ATTR_ITALIC;
1729 break;
1730 case 24:
1731 term.c.attr.mode &= ~ATTR_UNDERLINE;
1732 break;
1733 case 25:
1734 case 26:
1735 term.c.attr.mode &= ~ATTR_BLINK;
1736 break;
1737 case 27:
1738 term.c.attr.mode &= ~ATTR_REVERSE;
1739 break;
1740 case 38:
1741 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1742 term.c.attr.fg = idx;
1743 break;
1744 case 39:
1745 term.c.attr.fg = defaultfg;
1746 break;
1747 case 48:
1748 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1749 term.c.attr.bg = idx;
1750 break;
1751 case 49:
1752 term.c.attr.bg = defaultbg;
1753 break;
1754 default:
1755 if(BETWEEN(attr[i], 30, 37)) {
1756 term.c.attr.fg = attr[i] - 30;
1757 } else if(BETWEEN(attr[i], 40, 47)) {
1758 term.c.attr.bg = attr[i] - 40;
1759 } else if(BETWEEN(attr[i], 90, 97)) {
1760 term.c.attr.fg = attr[i] - 90 + 8;
1761 } else if(BETWEEN(attr[i], 100, 107)) {
1762 term.c.attr.bg = attr[i] - 100 + 8;
1763 } else {
1764 fprintf(stderr,
1765 "erresc(default): gfx attr %d unknown\n",
1766 attr[i]), csidump();
1767 }
1768 break;
1769 }
1770 }
1771 }
1772
1773 void
1774 tsetscroll(int t, int b) {
1775 int temp;
1776
1777 LIMIT(t, 0, term.row-1);
1778 LIMIT(b, 0, term.row-1);
1779 if(t > b) {
1780 temp = t;
1781 t = b;
1782 b = temp;
1783 }
1784 term.top = t;
1785 term.bot = b;
1786 }
1787
1788 void
1789 tsetmode(bool priv, bool set, int *args, int narg) {
1790 int *lim, mode;
1791 bool alt;
1792
1793 for(lim = args + narg; args < lim; ++args) {
1794 if(priv) {
1795 switch(*args) {
1796 case 1: /* DECCKM -- Cursor key */
1797 MODBIT(term.mode, set, MODE_APPCURSOR);
1798 break;
1799 case 5: /* DECSCNM -- Reverse video */
1800 mode = term.mode;
1801 MODBIT(term.mode, set, MODE_REVERSE);
1802 if(mode != term.mode)
1803 redraw(REDRAW_TIMEOUT);
1804 break;
1805 case 6: /* DECOM -- Origin */
1806 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1807 tmoveato(0, 0);
1808 break;
1809 case 7: /* DECAWM -- Auto wrap */
1810 MODBIT(term.mode, set, MODE_WRAP);
1811 break;
1812 case 0: /* Error (IGNORED) */
1813 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1814 case 3: /* DECCOLM -- Column (IGNORED) */
1815 case 4: /* DECSCLM -- Scroll (IGNORED) */
1816 case 8: /* DECARM -- Auto repeat (IGNORED) */
1817 case 18: /* DECPFF -- Printer feed (IGNORED) */
1818 case 19: /* DECPEX -- Printer extent (IGNORED) */
1819 case 42: /* DECNRCM -- National characters (IGNORED) */
1820 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1821 break;
1822 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1823 MODBIT(term.mode, !set, MODE_HIDE);
1824 break;
1825 case 9: /* X10 mouse compatibility mode */
1826 xsetpointermotion(0);
1827 MODBIT(term.mode, 0, MODE_MOUSE);
1828 MODBIT(term.mode, set, MODE_MOUSEX10);
1829 break;
1830 case 1000: /* 1000: report button press */
1831 xsetpointermotion(0);
1832 MODBIT(term.mode, 0, MODE_MOUSE);
1833 MODBIT(term.mode, set, MODE_MOUSEBTN);
1834 break;
1835 case 1002: /* 1002: report motion on button press */
1836 xsetpointermotion(0);
1837 MODBIT(term.mode, 0, MODE_MOUSE);
1838 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1839 break;
1840 case 1003: /* 1003: enable all mouse motions */
1841 xsetpointermotion(set);
1842 MODBIT(term.mode, 0, MODE_MOUSE);
1843 MODBIT(term.mode, set, MODE_MOUSEMANY);
1844 break;
1845 case 1004: /* 1004: send focus events to tty */
1846 MODBIT(term.mode, set, MODE_FOCUS);
1847 break;
1848 case 1006: /* 1006: extended reporting mode */
1849 MODBIT(term.mode, set, MODE_MOUSESGR);
1850 break;
1851 case 1034:
1852 MODBIT(term.mode, set, MODE_8BIT);
1853 break;
1854 case 1049: /* swap screen & set/restore cursor as xterm */
1855 if (!allowaltscreen)
1856 break;
1857 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1858 /* FALLTHRU */
1859 case 47: /* swap screen */
1860 case 1047:
1861 if (!allowaltscreen)
1862 break;
1863 alt = IS_SET(MODE_ALTSCREEN);
1864 if(alt) {
1865 tclearregion(0, 0, term.col-1,
1866 term.row-1);
1867 }
1868 if(set ^ alt) /* set is always 1 or 0 */
1869 tswapscreen();
1870 if(*args != 1049)
1871 break;
1872 /* FALLTRU */
1873 case 1048:
1874 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1875 break;
1876 case 2004: /* 2004: bracketed paste mode */
1877 MODBIT(term.mode, set, MODE_BRCKTPASTE);
1878 break;
1879 /* Not implemented mouse modes. See comments there. */
1880 case 1001: /* mouse highlight mode; can hang the
1881 terminal by design when implemented. */
1882 case 1005: /* UTF-8 mouse mode; will confuse
1883 applications not supporting UTF-8
1884 and luit. */
1885 case 1015: /* urxvt mangled mouse mode; incompatible
1886 and can be mistaken for other control
1887 codes. */
1888 default:
1889 fprintf(stderr,
1890 "erresc: unknown private set/reset mode %d\n",
1891 *args);
1892 break;
1893 }
1894 } else {
1895 switch(*args) {
1896 case 0: /* Error (IGNORED) */
1897 break;
1898 case 2: /* KAM -- keyboard action */
1899 MODBIT(term.mode, set, MODE_KBDLOCK);
1900 break;
1901 case 4: /* IRM -- Insertion-replacement */
1902 MODBIT(term.mode, set, MODE_INSERT);
1903 break;
1904 case 12: /* SRM -- Send/Receive */
1905 MODBIT(term.mode, !set, MODE_ECHO);
1906 break;
1907 case 20: /* LNM -- Linefeed/new line */
1908 MODBIT(term.mode, set, MODE_CRLF);
1909 break;
1910 default:
1911 fprintf(stderr,
1912 "erresc: unknown set/reset mode %d\n",
1913 *args);
1914 break;
1915 }
1916 }
1917 }
1918 }
1919
1920 void
1921 csihandle(void) {
1922 char buf[40];
1923 int len;
1924
1925 switch(csiescseq.mode) {
1926 default:
1927 unknown:
1928 fprintf(stderr, "erresc: unknown csi ");
1929 csidump();
1930 /* die(""); */
1931 break;
1932 case '@': /* ICH -- Insert <n> blank char */
1933 DEFAULT(csiescseq.arg[0], 1);
1934 tinsertblank(csiescseq.arg[0]);
1935 break;
1936 case 'A': /* CUU -- Cursor <n> Up */
1937 DEFAULT(csiescseq.arg[0], 1);
1938 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1939 break;
1940 case 'B': /* CUD -- Cursor <n> Down */
1941 case 'e': /* VPR --Cursor <n> Down */
1942 DEFAULT(csiescseq.arg[0], 1);
1943 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1944 break;
1945 case 'i': /* MC -- Media Copy */
1946 switch(csiescseq.arg[0]) {
1947 case 0:
1948 tdump();
1949 break;
1950 case 1:
1951 tdumpline(term.c.y);
1952 break;
1953 case 2:
1954 tdumpsel();
1955 break;
1956 case 4:
1957 term.mode &= ~MODE_PRINT;
1958 break;
1959 case 5:
1960 term.mode |= MODE_PRINT;
1961 break;
1962 }
1963 break;
1964 case 'c': /* DA -- Device Attributes */
1965 if(csiescseq.arg[0] == 0)
1966 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1967 break;
1968 case 'C': /* CUF -- Cursor <n> Forward */
1969 case 'a': /* HPR -- Cursor <n> Forward */
1970 DEFAULT(csiescseq.arg[0], 1);
1971 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1972 break;
1973 case 'D': /* CUB -- Cursor <n> Backward */
1974 DEFAULT(csiescseq.arg[0], 1);
1975 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1976 break;
1977 case 'E': /* CNL -- Cursor <n> Down and first col */
1978 DEFAULT(csiescseq.arg[0], 1);
1979 tmoveto(0, term.c.y+csiescseq.arg[0]);
1980 break;
1981 case 'F': /* CPL -- Cursor <n> Up and first col */
1982 DEFAULT(csiescseq.arg[0], 1);
1983 tmoveto(0, term.c.y-csiescseq.arg[0]);
1984 break;
1985 case 'g': /* TBC -- Tabulation clear */
1986 switch(csiescseq.arg[0]) {
1987 case 0: /* clear current tab stop */
1988 term.tabs[term.c.x] = 0;
1989 break;
1990 case 3: /* clear all the tabs */
1991 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1992 break;
1993 default:
1994 goto unknown;
1995 }
1996 break;
1997 case 'G': /* CHA -- Move to <col> */
1998 case '`': /* HPA */
1999 DEFAULT(csiescseq.arg[0], 1);
2000 tmoveto(csiescseq.arg[0]-1, term.c.y);
2001 break;
2002 case 'H': /* CUP -- Move to <row> <col> */
2003 case 'f': /* HVP */
2004 DEFAULT(csiescseq.arg[0], 1);
2005 DEFAULT(csiescseq.arg[1], 1);
2006 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2007 break;
2008 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2009 DEFAULT(csiescseq.arg[0], 1);
2010 tputtab(csiescseq.arg[0]);
2011 break;
2012 case 'J': /* ED -- Clear screen */
2013 selclear(NULL);
2014 switch(csiescseq.arg[0]) {
2015 case 0: /* below */
2016 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2017 if(term.c.y < term.row-1) {
2018 tclearregion(0, term.c.y+1, term.col-1,
2019 term.row-1);
2020 }
2021 break;
2022 case 1: /* above */
2023 if(term.c.y > 1)
2024 tclearregion(0, 0, term.col-1, term.c.y-1);
2025 tclearregion(0, term.c.y, term.c.x, term.c.y);
2026 break;
2027 case 2: /* all */
2028 tclearregion(0, 0, term.col-1, term.row-1);
2029 break;
2030 default:
2031 goto unknown;
2032 }
2033 break;
2034 case 'K': /* EL -- Clear line */
2035 switch(csiescseq.arg[0]) {
2036 case 0: /* right */
2037 tclearregion(term.c.x, term.c.y, term.col-1,
2038 term.c.y);
2039 break;
2040 case 1: /* left */
2041 tclearregion(0, term.c.y, term.c.x, term.c.y);
2042 break;
2043 case 2: /* all */
2044 tclearregion(0, term.c.y, term.col-1, term.c.y);
2045 break;
2046 }
2047 break;
2048 case 'S': /* SU -- Scroll <n> line up */
2049 DEFAULT(csiescseq.arg[0], 1);
2050 tscrollup(term.top, csiescseq.arg[0]);
2051 break;
2052 case 'T': /* SD -- Scroll <n> line down */
2053 DEFAULT(csiescseq.arg[0], 1);
2054 tscrolldown(term.top, csiescseq.arg[0]);
2055 break;
2056 case 'L': /* IL -- Insert <n> blank lines */
2057 DEFAULT(csiescseq.arg[0], 1);
2058 tinsertblankline(csiescseq.arg[0]);
2059 break;
2060 case 'l': /* RM -- Reset Mode */
2061 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2062 break;
2063 case 'M': /* DL -- Delete <n> lines */
2064 DEFAULT(csiescseq.arg[0], 1);
2065 tdeleteline(csiescseq.arg[0]);
2066 break;
2067 case 'X': /* ECH -- Erase <n> char */
2068 DEFAULT(csiescseq.arg[0], 1);
2069 tclearregion(term.c.x, term.c.y,
2070 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2071 break;
2072 case 'P': /* DCH -- Delete <n> char */
2073 DEFAULT(csiescseq.arg[0], 1);
2074 tdeletechar(csiescseq.arg[0]);
2075 break;
2076 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2077 DEFAULT(csiescseq.arg[0], 1);
2078 tputtab(-csiescseq.arg[0]);
2079 break;
2080 case 'd': /* VPA -- Move to <row> */
2081 DEFAULT(csiescseq.arg[0], 1);
2082 tmoveato(term.c.x, csiescseq.arg[0]-1);
2083 break;
2084 case 'h': /* SM -- Set terminal mode */
2085 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2086 break;
2087 case 'm': /* SGR -- Terminal attribute (color) */
2088 tsetattr(csiescseq.arg, csiescseq.narg);
2089 break;
2090 case 'n': /* DSR – Device Status Report (cursor position) */
2091 if (csiescseq.arg[0] == 6) {
2092 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2093 term.c.y+1, term.c.x+1);
2094 ttywrite(buf, len);
2095 }
2096 break;
2097 case 'r': /* DECSTBM -- Set Scrolling Region */
2098 if(csiescseq.priv) {
2099 goto unknown;
2100 } else {
2101 DEFAULT(csiescseq.arg[0], 1);
2102 DEFAULT(csiescseq.arg[1], term.row);
2103 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2104 tmoveato(0, 0);
2105 }
2106 break;
2107 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2108 tcursor(CURSOR_SAVE);
2109 break;
2110 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2111 tcursor(CURSOR_LOAD);
2112 break;
2113 }
2114 }
2115
2116 void
2117 csidump(void) {
2118 int i;
2119 uint c;
2120
2121 printf("ESC[");
2122 for(i = 0; i < csiescseq.len; i++) {
2123 c = csiescseq.buf[i] & 0xff;
2124 if(isprint(c)) {
2125 putchar(c);
2126 } else if(c == '\n') {
2127 printf("(\\n)");
2128 } else if(c == '\r') {
2129 printf("(\\r)");
2130 } else if(c == 0x1b) {
2131 printf("(\\e)");
2132 } else {
2133 printf("(%02x)", c);
2134 }
2135 }
2136 putchar('\n');
2137 }
2138
2139 void
2140 csireset(void) {
2141 memset(&csiescseq, 0, sizeof(csiescseq));
2142 }
2143
2144 void
2145 strhandle(void) {
2146 char *p = NULL;
2147 int j, narg, par;
2148
2149 term.esc &= ~(ESC_STR_END|ESC_STR);
2150 strparse();
2151 narg = strescseq.narg;
2152 par = atoi(strescseq.args[0]);
2153
2154 switch(strescseq.type) {
2155 case ']': /* OSC -- Operating System Command */
2156 switch(par) {
2157 case 0:
2158 case 1:
2159 case 2:
2160 if(narg > 1)
2161 xsettitle(strescseq.args[1]);
2162 return;
2163 case 4: /* color set */
2164 if(narg < 3)
2165 break;
2166 p = strescseq.args[2];
2167 /* fall through */
2168 case 104: /* color reset, here p = NULL */
2169 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2170 if (!xsetcolorname(j, p)) {
2171 fprintf(stderr, "erresc: invalid color %s\n", p);
2172 } else {
2173 /*
2174 * TODO if defaultbg color is changed, borders
2175 * are dirty
2176 */
2177 redraw(0);
2178 }
2179 return;
2180 }
2181 break;
2182 case 'k': /* old title set compatibility */
2183 xsettitle(strescseq.args[0]);
2184 return;
2185 case 'P': /* DCS -- Device Control String */
2186 case '_': /* APC -- Application Program Command */
2187 case '^': /* PM -- Privacy Message */
2188 return;
2189 }
2190
2191 fprintf(stderr, "erresc: unknown str ");
2192 strdump();
2193 }
2194
2195 void
2196 strparse(void) {
2197 char *p = strescseq.buf;
2198
2199 strescseq.narg = 0;
2200 strescseq.buf[strescseq.len] = '\0';
2201 while(p && strescseq.narg < STR_ARG_SIZ)
2202 strescseq.args[strescseq.narg++] = strsep(&p, ";");
2203 }
2204
2205 void
2206 strdump(void) {
2207 int i;
2208 uint c;
2209
2210 printf("ESC%c", strescseq.type);
2211 for(i = 0; i < strescseq.len; i++) {
2212 c = strescseq.buf[i] & 0xff;
2213 if(c == '\0') {
2214 return;
2215 } else if(isprint(c)) {
2216 putchar(c);
2217 } else if(c == '\n') {
2218 printf("(\\n)");
2219 } else if(c == '\r') {
2220 printf("(\\r)");
2221 } else if(c == 0x1b) {
2222 printf("(\\e)");
2223 } else {
2224 printf("(%02x)", c);
2225 }
2226 }
2227 printf("ESC\\\n");
2228 }
2229
2230 void
2231 strreset(void) {
2232 memset(&strescseq, 0, sizeof(strescseq));
2233 }
2234
2235 void
2236 tprinter(char *s, size_t len) {
2237 if(iofd != -1 && xwrite(iofd, s, len) < 0) {
2238 fprintf(stderr, "Error writing in %s:%s\n",
2239 opt_io, strerror(errno));
2240 close(iofd);
2241 iofd = -1;
2242 }
2243 }
2244
2245 void
2246 toggleprinter(const Arg *arg) {
2247 term.mode ^= MODE_PRINT;
2248 }
2249
2250 void
2251 printscreen(const Arg *arg) {
2252 tdump();
2253 }
2254
2255 void
2256 printsel(const Arg *arg) {
2257 tdumpsel();
2258 }
2259
2260 void
2261 tdumpsel(void) {
2262 char *ptr;
2263
2264 if((ptr = getsel())) {
2265 tprinter(ptr, strlen(ptr));
2266 free(ptr);
2267 }
2268 }
2269
2270 void
2271 tdumpline(int n) {
2272 Glyph *bp, *end;
2273
2274 bp = &term.line[n][0];
2275 end = &bp[term.col-1];
2276 while(end > bp && !strcmp(" ", end->c))
2277 --end;
2278 if(bp != end || strcmp(bp->c, " ")) {
2279 for( ;bp <= end; ++bp)
2280 tprinter(bp->c, strlen(bp->c));
2281 }
2282 tprinter("\n", 1);
2283 }
2284
2285 void
2286 tdump(void) {
2287 int i;
2288
2289 for(i = 0; i < term.row; ++i)
2290 tdumpline(i);
2291 }
2292
2293 void
2294 tputtab(int n) {
2295 uint x = term.c.x;
2296
2297 if(n > 0) {
2298 while(x < term.col && n--)
2299 for(++x; x < term.col && !term.tabs[x]; ++x)
2300 /* nothing */ ;
2301 } else if(n < 0) {
2302 while(x > 0 && n++)
2303 for(--x; x > 0 && !term.tabs[x]; --x)
2304 /* nothing */ ;
2305 }
2306 tmoveto(x, term.c.y);
2307 }
2308
2309 void
2310 techo(char *buf, int len) {
2311 for(; len > 0; buf++, len--) {
2312 char c = *buf;
2313
2314 if(ISCONTROL(c)) { /* control code */
2315 if(c & 0x80) {
2316 c &= 0x7f;
2317 tputc("^", 1);
2318 tputc("[", 1);
2319 } else if(c != '\n' && c != '\r' && c != '\t') {
2320 c ^= '\x40';
2321 tputc("^", 1);
2322 }
2323 tputc(&c, 1);
2324 } else {
2325 break;
2326 }
2327 }
2328 if(len)
2329 tputc(buf, len);
2330 }
2331
2332 void
2333 tdeftran(char ascii) {
2334 char c, (*bp)[2];
2335 static char tbl[][2] = {
2336 {'0', CS_GRAPHIC0}, {'1', CS_GRAPHIC1}, {'A', CS_UK},
2337 {'B', CS_USA}, {'<', CS_MULTI}, {'K', CS_GER},
2338 {'5', CS_FIN}, {'C', CS_FIN},
2339 {0, 0}
2340 };
2341
2342 for (bp = &tbl[0]; (c = (*bp)[0]) && c != ascii; ++bp)
2343 /* nothing */;
2344
2345 if (c == 0)
2346 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2347 else
2348 term.trantbl[term.icharset] = (*bp)[1];
2349 }
2350
2351 void
2352 tselcs(void) {
2353 MODBIT(term.c.attr.mode,
2354 term.trantbl[term.charset] == CS_GRAPHIC0,
2355 ATTR_GFX);
2356 }
2357
2358 bool
2359 tcontrolcode(uchar ascii) {
2360 static char question[UTF_SIZ] = "?";
2361
2362 switch(ascii) {
2363 case '\t': /* HT */
2364 tputtab(1);
2365 break;
2366 case '\b': /* BS */
2367 tmoveto(term.c.x-1, term.c.y);
2368 break;
2369 case '\r': /* CR */
2370 tmoveto(0, term.c.y);
2371 break;
2372 case '\f': /* LF */
2373 case '\v': /* VT */
2374 case '\n': /* LF */
2375 /* go to first col if the mode is set */
2376 tnewline(IS_SET(MODE_CRLF));
2377 break;
2378 case '\a': /* BEL */
2379 if(term.esc & ESC_STR_END) {
2380 /* backwards compatibility to xterm */
2381 strhandle();
2382 } else {
2383 if(!(xw.state & WIN_FOCUSED))
2384 xseturgency(1);
2385 if (bellvolume)
2386 XBell(xw.dpy, bellvolume);
2387 }
2388 break;
2389 case '\033': /* ESC */
2390 csireset();
2391 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2392 term.esc |= ESC_START;
2393 return 1;
2394 case '\016': /* SO */
2395 term.charset = 0;
2396 tselcs();
2397 break;
2398 case '\017': /* SI */
2399 term.charset = 1;
2400 tselcs();
2401 break;
2402 case '\032': /* SUB */
2403 tsetchar(question, &term.c.attr, term.c.x, term.c.y);
2404 case '\030': /* CAN */
2405 csireset();
2406 break;
2407 case '\005': /* ENQ (IGNORED) */
2408 case '\000': /* NUL (IGNORED) */
2409 case '\021': /* XON (IGNORED) */
2410 case '\023': /* XOFF (IGNORED) */
2411 case 0177: /* DEL (IGNORED) */
2412 case 0x84: /* TODO: IND */
2413 case 0x85: /* TODO: NEL */
2414 case 0x88: /* TODO: HTS */
2415 case 0x8d: /* TODO: RI */
2416 case 0x8e: /* TODO: SS2 */
2417 case 0x8f: /* TODO: SS3 */
2418 case 0x90: /* TODO: DCS */
2419 case 0x98: /* TODO: SOS */
2420 case 0x9a: /* TODO: DECID */
2421 case 0x9b: /* TODO: CSI */
2422 case 0x9c: /* TODO: ST */
2423 case 0x9d: /* TODO: OSC */
2424 case 0x9e: /* TODO: PM */
2425 case 0x9f: /* TODO: APC */
2426 break;
2427 default:
2428 return 0;
2429 }
2430 term.esc &= ~(ESC_STR_END|ESC_STR);
2431 return 1;
2432 }
2433
2434 void
2435 tdectest(char c) {
2436 static char E[UTF_SIZ] = "E";
2437 int x, y;
2438
2439 if(c == '8') { /* DEC screen alignment test. */
2440 for(x = 0; x < term.col; ++x) {
2441 for(y = 0; y < term.row; ++y)
2442 tsetchar(E, &term.c.attr, x, y);
2443 }
2444 }
2445 }
2446
2447 void
2448 tputc(char *c, int len) {
2449 uchar ascii;
2450 bool control;
2451 long unicodep;
2452 int width;
2453 Glyph *gp;
2454
2455 if(len == 1) {
2456 width = 1;
2457 unicodep = ascii = *c;
2458 } else {
2459 utf8decode(c, &unicodep, UTF_SIZ);
2460 width = wcwidth(unicodep);
2461 control = ISCONTROLC1(unicodep);
2462 ascii = unicodep;
2463 }
2464
2465 if(IS_SET(MODE_PRINT))
2466 tprinter(c, len);
2467 control = ISCONTROL(unicodep);
2468
2469 /*
2470 * STR sequence must be checked before anything else
2471 * because it uses all following characters until it
2472 * receives a ESC, a SUB, a ST or any other C1 control
2473 * character.
2474 */
2475 if(term.esc & ESC_STR) {
2476 if(width == 1 &&
2477 (ascii == '\a' || ascii == 030 ||
2478 ascii == 032 || ascii == 033 ||
2479 ISCONTROLC1(unicodep))) {
2480 term.esc &= ~ESC_STR;
2481 term.esc |= ESC_STR_END;
2482 } else if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
2483 memmove(&strescseq.buf[strescseq.len], c, len);
2484 strescseq.len += len;
2485 return;
2486 } else {
2487 /*
2488 * Here is a bug in terminals. If the user never sends
2489 * some code to stop the str or esc command, then st
2490 * will stop responding. But this is better than
2491 * silently failing with unknown characters. At least
2492 * then users will report back.
2493 *
2494 * In the case users ever get fixed, here is the code:
2495 */
2496 /*
2497 * term.esc = 0;
2498 * strhandle();
2499 */
2500 return;
2501 }
2502 }
2503
2504 /*
2505 * Actions of control codes must be performed as soon they arrive
2506 * because they can be embedded inside a control sequence, and
2507 * they must not cause conflicts with sequences.
2508 */
2509 if(control) {
2510 if (tcontrolcode(ascii))
2511 return;
2512 } else if(term.esc & ESC_START) {
2513 if(term.esc & ESC_CSI) {
2514 csiescseq.buf[csiescseq.len++] = ascii;
2515 if(BETWEEN(ascii, 0x40, 0x7E)
2516 || csiescseq.len >= \
2517 sizeof(csiescseq.buf)-1) {
2518 term.esc = 0;
2519 csiparse();
2520 csihandle();
2521 }
2522 return;
2523 } else if(term.esc & ESC_ALTCHARSET) {
2524 tdeftran(ascii);
2525 tselcs();
2526 } else if(term.esc & ESC_TEST) {
2527 tdectest(ascii);
2528 } else {
2529 switch(ascii) {
2530 case '[':
2531 term.esc |= ESC_CSI;
2532 return;
2533 case '#':
2534 term.esc |= ESC_TEST;
2535 return;
2536 case 'P': /* DCS -- Device Control String */
2537 case '_': /* APC -- Application Program Command */
2538 case '^': /* PM -- Privacy Message */
2539 case ']': /* OSC -- Operating System Command */
2540 case 'k': /* old title set compatibility */
2541 strreset();
2542 strescseq.type = ascii;
2543 term.esc |= ESC_STR;
2544 return;
2545 case '(': /* set primary charset G0 */
2546 case ')': /* set secondary charset G1 */
2547 case '*': /* set tertiary charset G2 */
2548 case '+': /* set quaternary charset G3 */
2549 term.icharset = ascii - '(';
2550 term.esc |= ESC_ALTCHARSET;
2551 return;
2552 case 'D': /* IND -- Linefeed */
2553 if(term.c.y == term.bot) {
2554 tscrollup(term.top, 1);
2555 } else {
2556 tmoveto(term.c.x, term.c.y+1);
2557 }
2558 break;
2559 case 'E': /* NEL -- Next line */
2560 tnewline(1); /* always go to first col */
2561 break;
2562 case 'H': /* HTS -- Horizontal tab stop */
2563 term.tabs[term.c.x] = 1;
2564 break;
2565 case 'M': /* RI -- Reverse index */
2566 if(term.c.y == term.top) {
2567 tscrolldown(term.top, 1);
2568 } else {
2569 tmoveto(term.c.x, term.c.y-1);
2570 }
2571 break;
2572 case 'Z': /* DECID -- Identify Terminal */
2573 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2574 break;
2575 case 'c': /* RIS -- Reset to inital state */
2576 treset();
2577 xresettitle();
2578 xloadcols();
2579 break;
2580 case '=': /* DECPAM -- Application keypad */
2581 term.mode |= MODE_APPKEYPAD;
2582 break;
2583 case '>': /* DECPNM -- Normal keypad */
2584 term.mode &= ~MODE_APPKEYPAD;
2585 break;
2586 case '7': /* DECSC -- Save Cursor */
2587 tcursor(CURSOR_SAVE);
2588 break;
2589 case '8': /* DECRC -- Restore Cursor */
2590 tcursor(CURSOR_LOAD);
2591 break;
2592 case '\\': /* ST -- String Terminator */
2593 if(term.esc & ESC_STR_END)
2594 strhandle();
2595 break;
2596 default:
2597 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2598 (uchar) ascii, isprint(ascii)? ascii:'.');
2599 break;
2600 }
2601 }
2602 term.esc = 0;
2603 /*
2604 * All characters which form part of a sequence are not
2605 * printed
2606 */
2607 return;
2608 }
2609 /*
2610 * Display control codes only if we are in graphic mode
2611 */
2612 if(control && !(term.c.attr.mode & ATTR_GFX))
2613 return;
2614 if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
2615 selclear(NULL);
2616
2617 gp = &term.line[term.c.y][term.c.x];
2618 if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2619 gp->mode |= ATTR_WRAP;
2620 tnewline(1);
2621 }
2622
2623 if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col)
2624 memmove(gp+1, gp, (term.col - term.c.x - 1) * sizeof(Glyph));
2625
2626 if(term.c.x+width > term.col)
2627 tnewline(1);
2628
2629 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2630
2631 if(width == 2) {
2632 gp->mode |= ATTR_WIDE;
2633 if(term.c.x+1 < term.col) {
2634 gp[1].c[0] = '\0';
2635 gp[1].mode = ATTR_WDUMMY;
2636 }
2637 }
2638 if(term.c.x+width < term.col) {
2639 tmoveto(term.c.x+width, term.c.y);
2640 } else {
2641 term.c.state |= CURSOR_WRAPNEXT;
2642 }
2643 }
2644
2645 int
2646 tresize(int col, int row) {
2647 int i;
2648 int minrow = MIN(row, term.row);
2649 int mincol = MIN(col, term.col);
2650 int slide = term.c.y - row + 1;
2651 bool *bp;
2652 Line *orig;
2653
2654 if(col < 1 || row < 1)
2655 return 0;
2656
2657 /* free unneeded rows */
2658 i = 0;
2659 if(slide > 0) {
2660 /*
2661 * slide screen to keep cursor where we expect it -
2662 * tscrollup would work here, but we can optimize to
2663 * memmove because we're freeing the earlier lines
2664 */
2665 for(/* i = 0 */; i < slide; i++) {
2666 free(term.line[i]);
2667 free(term.alt[i]);
2668 }
2669 memmove(term.line, term.line + slide, row * sizeof(Line));
2670 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2671 }
2672 for(i += row; i < term.row; i++) {
2673 free(term.line[i]);
2674 free(term.alt[i]);
2675 }
2676
2677 /* resize to new height */
2678 term.line = xrealloc(term.line, row * sizeof(Line));
2679 term.alt = xrealloc(term.alt, row * sizeof(Line));
2680 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2681 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2682
2683 /* resize each row to new width, zero-pad if needed */
2684 for(i = 0; i < minrow; i++) {
2685 term.dirty[i] = 1;
2686 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2687 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2688 }
2689
2690 /* allocate any new rows */
2691 for(/* i == minrow */; i < row; i++) {
2692 term.dirty[i] = 1;
2693 term.line[i] = xmalloc(col * sizeof(Glyph));
2694 term.alt[i] = xmalloc(col * sizeof(Glyph));
2695 }
2696 if(col > term.col) {
2697 bp = term.tabs + term.col;
2698
2699 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2700 while(--bp > term.tabs && !*bp)
2701 /* nothing */ ;
2702 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2703 *bp = 1;
2704 }
2705 /* update terminal size */
2706 term.col = col;
2707 term.row = row;
2708 /* reset scrolling region */
2709 tsetscroll(0, row-1);
2710 /* make use of the LIMIT in tmoveto */
2711 tmoveto(term.c.x, term.c.y);
2712 /* Clearing both screens */
2713 orig = term.line;
2714 do {
2715 if(mincol < col && 0 < minrow) {
2716 tclearregion(mincol, 0, col - 1, minrow - 1);
2717 }
2718 if(0 < col && minrow < row) {
2719 tclearregion(0, minrow, col - 1, row - 1);
2720 }
2721 tcursor(CURSOR_SAVE);
2722 tswapscreen();
2723 tcursor(CURSOR_LOAD);
2724 } while(orig != term.line);
2725
2726 return (slide > 0);
2727 }
2728
2729 void
2730 xresize(int col, int row) {
2731 xw.tw = MAX(1, col * xw.cw);
2732 xw.th = MAX(1, row * xw.ch);
2733
2734 XFreePixmap(xw.dpy, xw.buf);
2735 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2736 DefaultDepth(xw.dpy, xw.scr));
2737 XftDrawChange(xw.draw, xw.buf);
2738 xclear(0, 0, xw.w, xw.h);
2739 }
2740
2741 static inline ushort
2742 sixd_to_16bit(int x) {
2743 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
2744 }
2745
2746 void
2747 xloadcols(void) {
2748 int i, r, g, b;
2749 XRenderColor color = { .alpha = 0xffff };
2750 static bool loaded;
2751 Colour *cp;
2752
2753 if(loaded) {
2754 for (cp = dc.col; cp < dc.col + LEN(dc.col); ++cp)
2755 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
2756 }
2757
2758 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2759 for(i = 0; i < LEN(colorname); i++) {
2760 if(!colorname[i])
2761 continue;
2762 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2763 die("Could not allocate color '%s'\n", colorname[i]);
2764 }
2765 }
2766
2767 /* load colors [16-255] ; same colors as xterm */
2768 for(i = 16, r = 0; r < 6; r++) {
2769 for(g = 0; g < 6; g++) {
2770 for(b = 0; b < 6; b++) {
2771 color.red = sixd_to_16bit(r);
2772 color.green = sixd_to_16bit(g);
2773 color.blue = sixd_to_16bit(b);
2774 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
2775 die("Could not allocate color %d\n", i);
2776 }
2777 i++;
2778 }
2779 }
2780 }
2781
2782 for(r = 0; r < 24; r++, i++) {
2783 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
2784 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
2785 &dc.col[i])) {
2786 die("Could not allocate color %d\n", i);
2787 }
2788 }
2789 loaded = true;
2790 }
2791
2792 int
2793 xsetcolorname(int x, const char *name) {
2794 XRenderColor color = { .alpha = 0xffff };
2795 Colour colour;
2796 if(!BETWEEN(x, 0, LEN(colorname)))
2797 return -1;
2798 if(!name) {
2799 if(BETWEEN(x, 16, 16 + 215)) {
2800 int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
2801 color.red = sixd_to_16bit(r);
2802 color.green = sixd_to_16bit(g);
2803 color.blue = sixd_to_16bit(b);
2804 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2805 return 0; /* something went wrong */
2806 dc.col[x] = colour;
2807 return 1;
2808 } else if(BETWEEN(x, 16 + 216, 255)) {
2809 color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
2810 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2811 return 0; /* something went wrong */
2812 dc.col[x] = colour;
2813 return 1;
2814 } else {
2815 name = colorname[x];
2816 }
2817 }
2818 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
2819 return 0;
2820 dc.col[x] = colour;
2821 return 1;
2822 }
2823
2824 void
2825 xtermclear(int col1, int row1, int col2, int row2) {
2826 XftDrawRect(xw.draw,
2827 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2828 borderpx + col1 * xw.cw,
2829 borderpx + row1 * xw.ch,
2830 (col2-col1+1) * xw.cw,
2831 (row2-row1+1) * xw.ch);
2832 }
2833
2834 /*
2835 * Absolute coordinates.
2836 */
2837 void
2838 xclear(int x1, int y1, int x2, int y2) {
2839 XftDrawRect(xw.draw,
2840 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2841 x1, y1, x2-x1, y2-y1);
2842 }
2843
2844 void
2845 xhints(void) {
2846 XClassHint class = {opt_class ? opt_class : termname, termname};
2847 XWMHints wm = {.flags = InputHint, .input = 1};
2848 XSizeHints *sizeh = NULL;
2849
2850 sizeh = XAllocSizeHints();
2851
2852 sizeh->flags = PSize | PResizeInc | PBaseSize;
2853 sizeh->height = xw.h;
2854 sizeh->width = xw.w;
2855 sizeh->height_inc = xw.ch;
2856 sizeh->width_inc = xw.cw;
2857 sizeh->base_height = 2 * borderpx;
2858 sizeh->base_width = 2 * borderpx;
2859 if(xw.isfixed == True) {
2860 sizeh->flags |= PMaxSize | PMinSize;
2861 sizeh->min_width = sizeh->max_width = xw.w;
2862 sizeh->min_height = sizeh->max_height = xw.h;
2863 }
2864 if(xw.gm & (XValue|YValue)) {
2865 sizeh->flags |= USPosition | PWinGravity;
2866 sizeh->x = xw.l;
2867 sizeh->y = xw.t;
2868 sizeh->win_gravity = xgeommasktogravity(xw.gm);
2869 }
2870
2871 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
2872 &class);
2873 XFree(sizeh);
2874 }
2875
2876 int
2877 xgeommasktogravity(int mask) {
2878 switch(mask & (XNegative|YNegative)) {
2879 case 0:
2880 return NorthWestGravity;
2881 case XNegative:
2882 return NorthEastGravity;
2883 case YNegative:
2884 return SouthWestGravity;
2885 }
2886 return SouthEastGravity;
2887 }
2888
2889 int
2890 xloadfont(Font *f, FcPattern *pattern) {
2891 FcPattern *match;
2892 FcResult result;
2893
2894 match = FcFontMatch(NULL, pattern, &result);
2895 if(!match)
2896 return 1;
2897
2898 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
2899 FcPatternDestroy(match);
2900 return 1;
2901 }
2902
2903 f->set = NULL;
2904 f->pattern = FcPatternDuplicate(pattern);
2905
2906 f->ascent = f->match->ascent;
2907 f->descent = f->match->descent;
2908 f->lbearing = 0;
2909 f->rbearing = f->match->max_advance_width;
2910
2911 f->height = f->ascent + f->descent;
2912 f->width = f->lbearing + f->rbearing;
2913
2914 return 0;
2915 }
2916
2917 void
2918 xloadfonts(char *fontstr, double fontsize) {
2919 FcPattern *pattern;
2920 FcResult r_sz, r_psz;
2921 double fontval;
2922
2923 if(fontstr[0] == '-') {
2924 pattern = XftXlfdParse(fontstr, False, False);
2925 } else {
2926 pattern = FcNameParse((FcChar8 *)fontstr);
2927 }
2928
2929 if(!pattern)
2930 die("st: can't open font %s\n", fontstr);
2931
2932 if(fontsize > 0) {
2933 FcPatternDel(pattern, FC_PIXEL_SIZE);
2934 FcPatternDel(pattern, FC_SIZE);
2935 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2936 usedfontsize = fontsize;
2937 } else {
2938 r_psz = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2939 r_sz = FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval);
2940 if(r_psz == FcResultMatch) {
2941 usedfontsize = fontval;
2942 } else if(r_sz == FcResultMatch) {
2943 usedfontsize = -1;
2944 } else {
2945 /*
2946 * Default font size is 12, if none given. This is to
2947 * have a known usedfontsize value.
2948 */
2949 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2950 usedfontsize = 12;
2951 }
2952 }
2953
2954 FcConfigSubstitute(0, pattern, FcMatchPattern);
2955 FcDefaultSubstitute(pattern);
2956
2957 if(xloadfont(&dc.font, pattern))
2958 die("st: can't open font %s\n", fontstr);
2959
2960 if(usedfontsize < 0) {
2961 FcPatternGetDouble(dc.font.match->pattern,
2962 FC_PIXEL_SIZE, 0, &fontval);
2963 usedfontsize = fontval;
2964 }
2965
2966 /* Setting character width and height. */
2967 xw.cw = CEIL(dc.font.width * cwscale);
2968 xw.ch = CEIL(dc.font.height * chscale);
2969
2970 FcPatternDel(pattern, FC_SLANT);
2971 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2972 if(xloadfont(&dc.ifont, pattern))
2973 die("st: can't open font %s\n", fontstr);
2974
2975 FcPatternDel(pattern, FC_WEIGHT);
2976 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2977 if(xloadfont(&dc.ibfont, pattern))
2978 die("st: can't open font %s\n", fontstr);
2979
2980 FcPatternDel(pattern, FC_SLANT);
2981 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
2982 if(xloadfont(&dc.bfont, pattern))
2983 die("st: can't open font %s\n", fontstr);
2984
2985 FcPatternDestroy(pattern);
2986 }
2987
2988 int
2989 xloadfontset(Font *f) {
2990 FcResult result;
2991
2992 if(!(f->set = FcFontSort(0, f->pattern, FcTrue, 0, &result)))
2993 return 1;
2994 return 0;
2995 }
2996
2997 void
2998 xunloadfont(Font *f) {
2999 XftFontClose(xw.dpy, f->match);
3000 FcPatternDestroy(f->pattern);
3001 if(f->set)
3002 FcFontSetDestroy(f->set);
3003 }
3004
3005 void
3006 xunloadfonts(void) {
3007 int i;
3008
3009 /* Free the loaded fonts in the font cache. */
3010 for(i = 0; i < frclen; i++) {
3011 XftFontClose(xw.dpy, frc[i].font);
3012 }
3013 frclen = 0;
3014
3015 xunloadfont(&dc.font);
3016 xunloadfont(&dc.bfont);
3017 xunloadfont(&dc.ifont);
3018 xunloadfont(&dc.ibfont);
3019 }
3020
3021 void
3022 xzoom(const Arg *arg) {
3023 xunloadfonts();
3024 xloadfonts(usedfont, usedfontsize + arg->i);
3025 cresize(0, 0);
3026 redraw(0);
3027 }
3028
3029 void
3030 xinit(void) {
3031 XGCValues gcvalues;
3032 Cursor cursor;
3033 Window parent;
3034 pid_t thispid = getpid();
3035
3036 if(!(xw.dpy = XOpenDisplay(NULL)))
3037 die("Can't open display\n");
3038 xw.scr = XDefaultScreen(xw.dpy);
3039 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3040
3041 /* font */
3042 if(!FcInit())
3043 die("Could not init fontconfig.\n");
3044
3045 usedfont = (opt_font == NULL)? font : opt_font;
3046 xloadfonts(usedfont, 0);
3047
3048 /* colors */
3049 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3050 xloadcols();
3051
3052 /* adjust fixed window geometry */
3053 xw.w = 2 * borderpx + term.col * xw.cw;
3054 xw.h = 2 * borderpx + term.row * xw.ch;
3055 if(xw.gm & XNegative)
3056 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3057 if(xw.gm & YNegative)
3058 xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
3059
3060 /* Events */
3061 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3062 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3063 xw.attrs.bit_gravity = NorthWestGravity;
3064 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3065 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3066 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3067 xw.attrs.colormap = xw.cmap;
3068
3069 parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
3070 XRootWindow(xw.dpy, xw.scr);
3071 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3072 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3073 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3074 | CWEventMask | CWColormap, &xw.attrs);
3075
3076 memset(&gcvalues, 0, sizeof(gcvalues));
3077 gcvalues.graphics_exposures = False;
3078 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3079 &gcvalues);
3080 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3081 DefaultDepth(xw.dpy, xw.scr));
3082 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3083 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3084
3085 /* Xft rendering context */
3086 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3087
3088 /* input methods */
3089 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3090 XSetLocaleModifiers("@im=local");
3091 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3092 XSetLocaleModifiers("@im=");
3093 if((xw.xim = XOpenIM(xw.dpy,
3094 NULL, NULL, NULL)) == NULL) {
3095 die("XOpenIM failed. Could not open input"
3096 " device.\n");
3097 }
3098 }
3099 }
3100 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3101 | XIMStatusNothing, XNClientWindow, xw.win,
3102 XNFocusWindow, xw.win, NULL);
3103 if(xw.xic == NULL)
3104 die("XCreateIC failed. Could not obtain input method.\n");
3105
3106 /* white cursor, black outline */
3107 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
3108 XDefineCursor(xw.dpy, xw.win, cursor);
3109 XRecolorCursor(xw.dpy, cursor,
3110 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
3111 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
3112
3113 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3114 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3115 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3116 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3117
3118 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3119 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3120 PropModeReplace, (uchar *)&thispid, 1);
3121
3122 xresettitle();
3123 XMapWindow(xw.dpy, xw.win);
3124 xhints();
3125 XSync(xw.dpy, False);
3126 }
3127
3128 void
3129 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
3130 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3131 width = charlen * xw.cw, xp, i;
3132 int frcflags;
3133 int u8fl, u8fblen, u8cblen, doesexist;
3134 char *u8c, *u8fs;
3135 long unicodep;
3136 Font *font = &dc.font;
3137 FcResult fcres;
3138 FcPattern *fcpattern, *fontpattern;
3139 FcFontSet *fcsets[] = { NULL };
3140 FcCharSet *fccharset;
3141 Colour *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3142 XRenderColor colfg, colbg;
3143 XRectangle r;
3144 int oneatatime;
3145
3146 frcflags = FRC_NORMAL;
3147
3148 if(base.mode & ATTR_ITALIC) {
3149 if(base.fg == defaultfg)
3150 base.fg = defaultitalic;
3151 font = &dc.ifont;
3152 frcflags = FRC_ITALIC;
3153 } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
3154 if(base.fg == defaultfg)
3155 base.fg = defaultitalic;
3156 font = &dc.ibfont;
3157 frcflags = FRC_ITALICBOLD;
3158 } else if(base.mode & ATTR_UNDERLINE) {
3159 if(base.fg == defaultfg)
3160 base.fg = defaultunderline;
3161 }
3162
3163 if(IS_TRUECOL(base.fg)) {
3164 colfg.alpha = 0xffff;
3165 colfg.red = TRUERED(base.fg);
3166 colfg.green = TRUEGREEN(base.fg);
3167 colfg.blue = TRUEBLUE(base.fg);
3168 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3169 fg = &truefg;
3170 } else {
3171 fg = &dc.col[base.fg];
3172 }
3173
3174 if(IS_TRUECOL(base.bg)) {
3175 colbg.alpha = 0xffff;
3176 colbg.green = TRUEGREEN(base.bg);
3177 colbg.red = TRUERED(base.bg);
3178 colbg.blue = TRUEBLUE(base.bg);
3179 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3180 bg = &truebg;
3181 } else {
3182 bg = &dc.col[base.bg];
3183 }
3184
3185 if(base.mode & ATTR_BOLD) {
3186 if(BETWEEN(base.fg, 0, 7)) {
3187 /* basic system colors */
3188 fg = &dc.col[base.fg + 8];
3189 } else if(BETWEEN(base.fg, 16, 195)) {
3190 /* 256 colors */
3191 fg = &dc.col[base.fg + 36];
3192 } else if(BETWEEN(base.fg, 232, 251)) {
3193 /* greyscale */
3194 fg = &dc.col[base.fg + 4];
3195 }
3196 /*
3197 * Those ranges will not be brightened:
3198 * 8 - 15 – bright system colors
3199 * 196 - 231 – highest 256 color cube
3200 * 252 - 255 – brightest colors in greyscale
3201 */
3202 font = &dc.bfont;
3203 frcflags = FRC_BOLD;
3204 }
3205
3206 if(IS_SET(MODE_REVERSE)) {
3207 if(fg == &dc.col[defaultfg]) {
3208 fg = &dc.col[defaultbg];
3209 } else {
3210 colfg.red = ~fg->color.red;
3211 colfg.green = ~fg->color.green;
3212 colfg.blue = ~fg->color.blue;
3213 colfg.alpha = fg->color.alpha;
3214 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3215 &revfg);
3216 fg = &revfg;
3217 }
3218
3219 if(bg == &dc.col[defaultbg]) {
3220 bg = &dc.col[defaultfg];
3221 } else {
3222 colbg.red = ~bg->color.red;
3223 colbg.green = ~bg->color.green;
3224 colbg.blue = ~bg->color.blue;
3225 colbg.alpha = bg->color.alpha;
3226 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3227 &revbg);
3228 bg = &revbg;
3229 }
3230 }
3231
3232 if(base.mode & ATTR_REVERSE) {
3233 temp = fg;
3234 fg = bg;
3235 bg = temp;
3236 }
3237
3238 if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3239 fg = bg;
3240
3241 /* Intelligent cleaning up of the borders. */
3242 if(x == 0) {
3243 xclear(0, (y == 0)? 0 : winy, borderpx,
3244 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3245 }
3246 if(x + charlen >= term.col) {
3247 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3248 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3249 }
3250 if(y == 0)
3251 xclear(winx, 0, winx + width, borderpx);
3252 if(y == term.row-1)
3253 xclear(winx, winy + xw.ch, winx + width, xw.h);
3254
3255 /* Clean up the region we want to draw to. */
3256 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3257
3258 /* Set the clip region because Xft is sometimes dirty. */
3259 r.x = 0;
3260 r.y = 0;
3261 r.height = xw.ch;
3262 r.width = width;
3263 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3264
3265 for(xp = winx; bytelen > 0;) {
3266 /*
3267 * Search for the range in the to be printed string of glyphs
3268 * that are in the main font. Then print that range. If
3269 * some glyph is found that is not in the font, do the
3270 * fallback dance.
3271 */
3272 u8fs = s;
3273 u8fblen = 0;
3274 u8fl = 0;
3275 oneatatime = font->width != xw.cw;
3276 for(;;) {
3277 u8c = s;
3278 u8cblen = utf8decode(s, &unicodep, UTF_SIZ);
3279 s += u8cblen;
3280 bytelen -= u8cblen;
3281
3282 doesexist = XftCharExists(xw.dpy, font->match, unicodep);
3283 if(oneatatime || !doesexist || bytelen <= 0) {
3284 if(oneatatime || bytelen <= 0) {
3285 if(doesexist) {
3286 u8fl++;
3287 u8fblen += u8cblen;
3288 }
3289 }
3290
3291 if(u8fl > 0) {
3292 XftDrawStringUtf8(xw.draw, fg,
3293 font->match, xp,
3294 winy + font->ascent,
3295 (FcChar8 *)u8fs,
3296 u8fblen);
3297 xp += xw.cw * u8fl;
3298
3299 }
3300 break;
3301 }
3302
3303 u8fl++;
3304 u8fblen += u8cblen;
3305 }
3306 if(doesexist) {
3307 if(oneatatime)
3308 continue;
3309 break;
3310 }
3311
3312 /* Search the font cache. */
3313 for(i = 0; i < frclen; i++) {
3314 if(XftCharExists(xw.dpy, frc[i].font, unicodep)
3315 && frc[i].flags == frcflags) {
3316 break;
3317 }
3318 }
3319
3320 /* Nothing was found. */
3321 if(i >= frclen) {
3322 if(!font->set)
3323 xloadfontset(font);
3324 fcsets[0] = font->set;
3325
3326 /*
3327 * Nothing was found in the cache. Now use
3328 * some dozen of Fontconfig calls to get the
3329 * font for one single character.
3330 *
3331 * Xft and fontconfig are design failures.
3332 */
3333 fcpattern = FcPatternDuplicate(font->pattern);
3334 fccharset = FcCharSetCreate();
3335
3336 FcCharSetAddChar(fccharset, unicodep);
3337 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3338 fccharset);
3339 FcPatternAddBool(fcpattern, FC_SCALABLE,
3340 FcTrue);
3341
3342 FcConfigSubstitute(0, fcpattern,
3343 FcMatchPattern);
3344 FcDefaultSubstitute(fcpattern);
3345
3346 fontpattern = FcFontSetMatch(0, fcsets,
3347 FcTrue, fcpattern, &fcres);
3348
3349 /*
3350 * Overwrite or create the new cache entry.
3351 */
3352 if(frclen >= LEN(frc)) {
3353 frclen = LEN(frc) - 1;
3354 XftFontClose(xw.dpy, frc[frclen].font);
3355 }
3356
3357 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3358 fontpattern);
3359 frc[frclen].flags = frcflags;
3360
3361 i = frclen;
3362 frclen++;
3363
3364 FcPatternDestroy(fcpattern);
3365 FcCharSetDestroy(fccharset);
3366 }
3367
3368 XftDrawStringUtf8(xw.draw, fg, frc[i].font,
3369 xp, winy + frc[i].font->ascent,
3370 (FcChar8 *)u8c, u8cblen);
3371
3372 xp += xw.cw * wcwidth(unicodep);
3373 }
3374
3375 /*
3376 * This is how the loop above actually should be. Why does the
3377 * application have to care about font details?
3378 *
3379 * I have to repeat: Xft and Fontconfig are design failures.
3380 */
3381 /*
3382 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
3383 winy + font->ascent, (FcChar8 *)s, bytelen);
3384 */
3385
3386 if(base.mode & ATTR_UNDERLINE) {
3387 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
3388 width, 1);
3389 }
3390
3391 /* Reset clip to none. */
3392 XftDrawSetClip(xw.draw, 0);
3393 }
3394
3395 void
3396 xdrawcursor(void) {
3397 static int oldx = 0, oldy = 0;
3398 int sl, width, curx;
3399 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
3400
3401 LIMIT(oldx, 0, term.col-1);
3402 LIMIT(oldy, 0, term.row-1);
3403
3404 curx = term.c.x;
3405
3406 /* adjust position if in dummy */
3407 if(term.line[oldy][oldx].mode & ATTR_WDUMMY)
3408 oldx--;
3409 if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3410 curx--;
3411
3412 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
3413
3414 /* remove the old cursor */
3415 sl = utf8len(term.line[oldy][oldx].c);
3416 width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1;
3417 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
3418 oldy, width, sl);
3419
3420 /* draw the new one */
3421 if(!(IS_SET(MODE_HIDE))) {
3422 if(xw.state & WIN_FOCUSED) {
3423 if(IS_SET(MODE_REVERSE)) {
3424 g.mode |= ATTR_REVERSE;
3425 g.fg = defaultcs;
3426 g.bg = defaultfg;
3427 }
3428
3429 sl = utf8len(g.c);
3430 width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
3431 ? 2 : 1;
3432 xdraws(g.c, g, term.c.x, term.c.y, width, sl);
3433 } else {
3434 XftDrawRect(xw.draw, &dc.col[defaultcs],
3435 borderpx + curx * xw.cw,
3436 borderpx + term.c.y * xw.ch,
3437 xw.cw - 1, 1);
3438 XftDrawRect(xw.draw, &dc.col[defaultcs],
3439 borderpx + curx * xw.cw,
3440 borderpx + term.c.y * xw.ch,
3441 1, xw.ch - 1);
3442 XftDrawRect(xw.draw, &dc.col[defaultcs],
3443 borderpx + (curx + 1) * xw.cw - 1,
3444 borderpx + term.c.y * xw.ch,
3445 1, xw.ch - 1);
3446 XftDrawRect(xw.draw, &dc.col[defaultcs],
3447 borderpx + curx * xw.cw,
3448 borderpx + (term.c.y + 1) * xw.ch - 1,
3449 xw.cw, 1);
3450 }
3451 oldx = curx, oldy = term.c.y;
3452 }
3453 }
3454
3455
3456 void
3457 xsettitle(char *p) {
3458 XTextProperty prop;
3459
3460 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3461 &prop);
3462 XSetWMName(xw.dpy, xw.win, &prop);
3463 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3464 XFree(prop.value);
3465 }
3466
3467 void
3468 xresettitle(void) {
3469 xsettitle(opt_title ? opt_title : "st");
3470 }
3471
3472 void
3473 redraw(int timeout) {
3474 struct timespec tv = {0, timeout * 1000};
3475
3476 draw();
3477
3478 if(timeout > 0) {
3479 nanosleep(&tv, NULL);
3480 XSync(xw.dpy, False); /* necessary for a good tput flash */
3481 }
3482 }
3483
3484 void
3485 draw(void) {
3486 drawregion(0, 0, term.col, term.row);
3487 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3488 xw.h, 0, 0);
3489 XSetForeground(xw.dpy, dc.gc,
3490 dc.col[IS_SET(MODE_REVERSE)?
3491 defaultfg : defaultbg].pixel);
3492 }
3493
3494 void
3495 drawregion(int x1, int y1, int x2, int y2) {
3496 int ic, ib, x, y, ox, sl;
3497 Glyph base, new;
3498 char buf[DRAW_BUF_SIZ];
3499 bool ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3500 long unicodep;
3501
3502 if(!(xw.state & WIN_VISIBLE))
3503 return;
3504
3505 for(y = y1; y < y2; y++) {
3506 if(!term.dirty[y])
3507 continue;
3508
3509 xtermclear(0, y, term.col, y);
3510 term.dirty[y] = 0;
3511 base = term.line[y][0];
3512 ic = ib = ox = 0;
3513 for(x = x1; x < x2; x++) {
3514 new = term.line[y][x];
3515 if(new.mode == ATTR_WDUMMY)
3516 continue;
3517 if(ena_sel && selected(x, y))
3518 new.mode ^= ATTR_REVERSE;
3519 if(ib > 0 && (ATTRCMP(base, new)
3520 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
3521 xdraws(buf, base, ox, y, ic, ib);
3522 ic = ib = 0;
3523 }
3524 if(ib == 0) {
3525 ox = x;
3526 base = new;
3527 }
3528
3529 sl = utf8decode(new.c, &unicodep, UTF_SIZ);
3530 memcpy(buf+ib, new.c, sl);
3531 ib += sl;
3532 ic += (new.mode & ATTR_WIDE)? 2 : 1;
3533 }
3534 if(ib > 0)
3535 xdraws(buf, base, ox, y, ic, ib);
3536 }
3537 xdrawcursor();
3538 }
3539
3540 void
3541 expose(XEvent *ev) {
3542 XExposeEvent *e = &ev->xexpose;
3543
3544 if(xw.state & WIN_REDRAW) {
3545 if(!e->count)
3546 xw.state &= ~WIN_REDRAW;
3547 }
3548 redraw(0);
3549 }
3550
3551 void
3552 visibility(XEvent *ev) {
3553 XVisibilityEvent *e = &ev->xvisibility;
3554
3555 if(e->state == VisibilityFullyObscured) {
3556 xw.state &= ~WIN_VISIBLE;
3557 } else if(!(xw.state & WIN_VISIBLE)) {
3558 /* need a full redraw for next Expose, not just a buf copy */
3559 xw.state |= WIN_VISIBLE | WIN_REDRAW;
3560 }
3561 }
3562
3563 void
3564 unmap(XEvent *ev) {
3565 xw.state &= ~WIN_VISIBLE;
3566 }
3567
3568 void
3569 xsetpointermotion(int set) {
3570 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
3571 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
3572 }
3573
3574 void
3575 xseturgency(int add) {
3576 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3577
3578 MODBIT(h->flags, add, XUrgencyHint);
3579 XSetWMHints(xw.dpy, xw.win, h);
3580 XFree(h);
3581 }
3582
3583 void
3584 focus(XEvent *ev) {
3585 XFocusChangeEvent *e = &ev->xfocus;
3586
3587 if(e->mode == NotifyGrab)
3588 return;
3589
3590 if(ev->type == FocusIn) {
3591 XSetICFocus(xw.xic);
3592 xw.state |= WIN_FOCUSED;
3593 xseturgency(0);
3594 if(IS_SET(MODE_FOCUS))
3595 ttywrite("\033[I", 3);
3596 } else {
3597 XUnsetICFocus(xw.xic);
3598 xw.state &= ~WIN_FOCUSED;
3599 if(IS_SET(MODE_FOCUS))
3600 ttywrite("\033[O", 3);
3601 }
3602 }
3603
3604 static inline bool
3605 match(uint mask, uint state) {
3606 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
3607 }
3608
3609 void
3610 numlock(const Arg *dummy) {
3611 term.numlock ^= 1;
3612 }
3613
3614 char*
3615 kmap(KeySym k, uint state) {
3616 Key *kp;
3617 int i;
3618
3619 /* Check for mapped keys out of X11 function keys. */
3620 for(i = 0; i < LEN(mappedkeys); i++) {
3621 if(mappedkeys[i] == k)
3622 break;
3623 }
3624 if(i == LEN(mappedkeys)) {
3625 if((k & 0xFFFF) < 0xFD00)
3626 return NULL;
3627 }
3628
3629 for(kp = key; kp < key + LEN(key); kp++) {
3630 if(kp->k != k)
3631 continue;
3632
3633 if(!match(kp->mask, state))
3634 continue;
3635
3636 if(IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
3637 continue;
3638 if(term.numlock && kp->appkey == 2)
3639 continue;
3640
3641 if(IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
3642 continue;
3643
3644 if(IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
3645 continue;
3646
3647 return kp->s;
3648 }
3649
3650 return NULL;
3651 }
3652
3653 void
3654 kpress(XEvent *ev) {
3655 XKeyEvent *e = &ev->xkey;
3656 KeySym ksym;
3657 char buf[32], *customkey;
3658 int len;
3659 long c;
3660 Status status;
3661 Shortcut *bp;
3662
3663 if(IS_SET(MODE_KBDLOCK))
3664 return;
3665
3666 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
3667 /* 1. shortcuts */
3668 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3669 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3670 bp->func(&(bp->arg));
3671 return;
3672 }
3673 }
3674
3675 /* 2. custom keys from config.h */
3676 if((customkey = kmap(ksym, e->state))) {
3677 ttysend(customkey, strlen(customkey));
3678 return;
3679 }
3680
3681 /* 3. composed string from input method */
3682 if(len == 0)
3683 return;
3684 if(len == 1 && e->state & Mod1Mask) {
3685 if(IS_SET(MODE_8BIT)) {
3686 if(*buf < 0177) {
3687 c = *buf | 0x80;
3688 len = utf8encode(c, buf, UTF_SIZ);
3689 }
3690 } else {
3691 buf[1] = buf[0];
3692 buf[0] = '\033';
3693 len = 2;
3694 }
3695 }
3696 ttysend(buf, len);
3697 }
3698
3699
3700 void
3701 cmessage(XEvent *e) {
3702 /*
3703 * See xembed specs
3704 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3705 */
3706 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3707 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3708 xw.state |= WIN_FOCUSED;
3709 xseturgency(0);
3710 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3711 xw.state &= ~WIN_FOCUSED;
3712 }
3713 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3714 /* Send SIGHUP to shell */
3715 kill(pid, SIGHUP);
3716 exit(EXIT_SUCCESS);
3717 }
3718 }
3719
3720 void
3721 cresize(int width, int height) {
3722 int col, row;
3723
3724 if(width != 0)
3725 xw.w = width;
3726 if(height != 0)
3727 xw.h = height;
3728
3729 col = (xw.w - 2 * borderpx) / xw.cw;
3730 row = (xw.h - 2 * borderpx) / xw.ch;
3731
3732 tresize(col, row);
3733 xresize(col, row);
3734 ttyresize();
3735 }
3736
3737 void
3738 resize(XEvent *e) {
3739 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3740 return;
3741
3742 cresize(e->xconfigure.width, e->xconfigure.height);
3743 }
3744
3745 void
3746 run(void) {
3747 XEvent ev;
3748 int w = xw.w, h = xw.h;
3749 fd_set rfd;
3750 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
3751 struct timeval drawtimeout, *tv = NULL, now, last, lastblink;
3752
3753 /* Waiting for window mapping */
3754 while(1) {
3755 XNextEvent(xw.dpy, &ev);
3756 if(ev.type == ConfigureNotify) {
3757 w = ev.xconfigure.width;
3758 h = ev.xconfigure.height;
3759 } else if(ev.type == MapNotify) {
3760 break;
3761 }
3762 }
3763
3764 ttynew();
3765 cresize(w, h);
3766
3767 gettimeofday(&last, NULL);
3768 lastblink = last;
3769
3770 for(xev = actionfps;;) {
3771 long deltatime;
3772
3773 FD_ZERO(&rfd);
3774 FD_SET(cmdfd, &rfd);
3775 FD_SET(xfd, &rfd);
3776
3777 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
3778 if(errno == EINTR)
3779 continue;
3780 die("select failed: %s\n", strerror(errno));
3781 }
3782 if(FD_ISSET(cmdfd, &rfd)) {
3783 ttyread();
3784 if(blinktimeout) {
3785 blinkset = tattrset(ATTR_BLINK);
3786 if(!blinkset)
3787 MODBIT(term.mode, 0, MODE_BLINK);
3788 }
3789 }
3790
3791 if(FD_ISSET(xfd, &rfd))
3792 xev = actionfps;
3793
3794 gettimeofday(&now, NULL);
3795 drawtimeout.tv_sec = 0;
3796 drawtimeout.tv_usec = (1000/xfps) * 1000;
3797 tv = &drawtimeout;
3798
3799 dodraw = 0;
3800 if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
3801 tsetdirtattr(ATTR_BLINK);
3802 term.mode ^= MODE_BLINK;
3803 lastblink = now;
3804 dodraw = 1;
3805 }
3806 deltatime = TIMEDIFF(now, last);
3807 if(deltatime > (xev? (1000/xfps) : (1000/actionfps))
3808 || deltatime < 0) {
3809 dodraw = 1;
3810 last = now;
3811 }
3812
3813 if(dodraw) {
3814 while(XPending(xw.dpy)) {
3815 XNextEvent(xw.dpy, &ev);
3816 if(XFilterEvent(&ev, None))
3817 continue;
3818 if(handler[ev.type])
3819 (handler[ev.type])(&ev);
3820 }
3821
3822 draw();
3823 XFlush(xw.dpy);
3824
3825 if(xev && !FD_ISSET(xfd, &rfd))
3826 xev--;
3827 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
3828 if(blinkset) {
3829 if(TIMEDIFF(now, lastblink) \
3830 > blinktimeout) {
3831 drawtimeout.tv_usec = 1;
3832 } else {
3833 drawtimeout.tv_usec = (1000 * \
3834 (blinktimeout - \
3835 TIMEDIFF(now,
3836 lastblink)));
3837 }
3838 } else {
3839 tv = NULL;
3840 }
3841 }
3842 }
3843 }
3844 }
3845
3846 void
3847 usage(void) {
3848 die("%s " VERSION " (c) 2010-2014 st engineers\n" \
3849 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
3850 " [-t title] [-w windowid] [-e command ...]\n", argv0);
3851 }
3852
3853 int
3854 main(int argc, char *argv[]) {
3855 char *titles;
3856 uint cols = 80, rows = 24;
3857
3858 xw.l = xw.t = 0;
3859 xw.isfixed = False;
3860
3861 ARGBEGIN {
3862 case 'a':
3863 allowaltscreen = false;
3864 break;
3865 case 'c':
3866 opt_class = EARGF(usage());
3867 break;
3868 case 'e':
3869 /* eat all remaining arguments */
3870 if(argc > 1) {
3871 opt_cmd = &argv[1];
3872 if(argv[1] != NULL && opt_title == NULL) {
3873 titles = xstrdup(argv[1]);
3874 opt_title = basename(titles);
3875 }
3876 }
3877 goto run;
3878 case 'f':
3879 opt_font = EARGF(usage());
3880 break;
3881 case 'g':
3882 xw.gm = XParseGeometry(EARGF(usage()),
3883 &xw.l, &xw.t, &cols, &rows);
3884 break;
3885 case 'i':
3886 xw.isfixed = True;
3887 break;
3888 case 'o':
3889 opt_io = EARGF(usage());
3890 break;
3891 case 't':
3892 opt_title = EARGF(usage());
3893 break;
3894 case 'w':
3895 opt_embed = EARGF(usage());
3896 break;
3897 case 'v':
3898 default:
3899 usage();
3900 } ARGEND;
3901
3902 run:
3903 setlocale(LC_CTYPE, "");
3904 XSetLocaleModifiers("");
3905 tnew(cols? cols : 1, rows? rows : 1);
3906 xinit();
3907 selinit();
3908 run();
3909
3910 return 0;
3911 }
3912