1 /* See LICENSE for licence details. */
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
18 #include <sys/types.h>
22 #include <X11/Xatom.h>
24 #include <X11/Xutil.h>
25 #include <X11/cursorfont.h>
26 #include <X11/keysym.h>
27 #include <X11/Xft/Xft.h>
28 #include <fontconfig/fontconfig.h>
36 #define Draw XftDraw *
37 #define Colour XftColor
38 #define Colourmap Colormap
39 #define Rectangle XRectangle
43 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
45 #elif defined(__FreeBSD__) || defined(__DragonFly__)
51 #define XEMBED_FOCUS_IN 4
52 #define XEMBED_FOCUS_OUT 5
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
63 #define XK_SWITCH_MOD (1<<13)
65 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
68 #define SERRNO strerror(errno)
69 #define MIN(a, b) ((a) < (b) ? (a) : (b))
70 #define MAX(a, b) ((a) < (b) ? (b) : (a))
71 #define LEN(a) (sizeof(a) / sizeof(a[0]))
72 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
73 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
74 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
75 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
76 #define IS_SET(flag) ((term.mode & (flag)) != 0)
77 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
79 #define VT102ID "\033[?6c"
81 enum glyph_attribute {
92 enum cursor_movement {
110 MODE_MOUSEMOTION = 64,
116 MODE_APPCURSOR = 2048,
117 MODE_MOUSESGR = 4096,
126 ESC_STR = 4, /* DSC, OSC, PM, APC */
128 ESC_STR_END = 16, /* a final string was encountered */
129 ESC_TEST = 32, /* Enter in test mode */
138 enum selection_type {
143 enum selection_snap {
150 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
152 typedef unsigned char uchar;
153 typedef unsigned int uint;
154 typedef unsigned long ulong;
155 typedef unsigned short ushort;
158 char c[UTF_SIZ]; /* character code */
159 uchar mode; /* attribute flags */
160 ushort fg; /* foreground */
161 ushort bg; /* background */
167 Glyph attr; /* current char attributes */
173 /* CSI Escape sequence structs */
174 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
176 char buf[ESC_BUF_SIZ]; /* raw string */
177 int len; /* raw string length */
179 int arg[ESC_ARG_SIZ];
180 int narg; /* nb of args */
184 /* STR Escape sequence structs */
185 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
187 char type; /* ESC type ... */
188 char buf[STR_BUF_SIZ]; /* raw string */
189 int len; /* raw string length */
190 char *args[STR_ARG_SIZ];
191 int narg; /* nb of args */
194 /* Internal representation of the screen */
196 int row; /* nb row */
197 int col; /* nb col */
198 Line *line; /* screen */
199 Line *alt; /* alternate screen */
200 bool *dirty; /* dirtyness of lines */
201 TCursor c; /* cursor */
202 int top; /* top scroll limit */
203 int bot; /* bottom scroll limit */
204 int mode; /* terminal mode flags */
205 int esc; /* escape state flags */
206 bool numlock; /* lock numbers in keyboard */
210 /* Purely graphic info */
216 Atom xembed, wmdeletewin;
222 bool isfixed; /* is fixed geometry? */
223 int fx, fy, fw, fh; /* fixed geometry */
224 int tw, th; /* tty width and height */
225 int w, h; /* window width and height */
226 int ch; /* char height */
227 int cw; /* char width */
228 char state; /* focus, redraw, visible */
241 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
242 signed char appkey; /* application keypad */
243 signed char appcursor; /* application cursor */
244 signed char crlf; /* crlf mode */
247 /* TODO: use better name for vars... */
260 struct timeval tclick1;
261 struct timeval tclick2;
274 void (*func)(const Arg *);
278 /* function definitions used in config.h */
279 static void clippaste(const Arg *);
280 static void numlock(const Arg *);
281 static void selpaste(const Arg *);
282 static void xzoom(const Arg *);
284 /* Config.h for applying patches and the configuration. */
300 /* Drawing Context */
302 Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
303 Font font, bfont, ifont, ibfont;
307 static void die(const char *, ...);
308 static void draw(void);
309 static void redraw(int);
310 static void drawregion(int, int, int, int);
311 static void execsh(void);
312 static void sigchld(int);
313 static void run(void);
315 static void csidump(void);
316 static void csihandle(void);
317 static void csiparse(void);
318 static void csireset(void);
319 static void strdump(void);
320 static void strhandle(void);
321 static void strparse(void);
322 static void strreset(void);
324 static int tattrset(int);
325 static void tclearregion(int, int, int, int);
326 static void tcursor(int);
327 static void tdeletechar(int);
328 static void tdeleteline(int);
329 static void tinsertblank(int);
330 static void tinsertblankline(int);
331 static void tmoveto(int, int);
332 static void tmoveato(int x, int y);
333 static void tnew(int, int);
334 static void tnewline(int);
335 static void tputtab(bool);
336 static void tputc(char *, int);
337 static void treset(void);
338 static int tresize(int, int);
339 static void tscrollup(int, int);
340 static void tscrolldown(int, int);
341 static void tsetattr(int*, int);
342 static void tsetchar(char *, Glyph *, int, int);
343 static void tsetscroll(int, int);
344 static void tswapscreen(void);
345 static void tsetdirt(int, int);
346 static void tsetdirtattr(int);
347 static void tsetmode(bool, bool, int *, int);
348 static void tfulldirt(void);
349 static void techo(char *, int);
351 static inline bool match(uint, uint);
352 static void ttynew(void);
353 static void ttyread(void);
354 static void ttyresize(void);
355 static void ttywrite(const char *, size_t);
357 static void xdraws(char *, Glyph, int, int, int, int);
358 static void xhints(void);
359 static void xclear(int, int, int, int);
360 static void xdrawcursor(void);
361 static void xinit(void);
362 static void xloadcols(void);
363 static int xsetcolorname(int, const char *);
364 static int xloadfont(Font *, FcPattern *);
365 static void xloadfonts(char *, int);
366 static void xsettitle(char *);
367 static void xresettitle(void);
368 static void xseturgency(int);
369 static void xsetsel(char*);
370 static void xtermclear(int, int, int, int);
371 static void xunloadfonts(void);
372 static void xresize(int, int);
374 static void expose(XEvent *);
375 static void visibility(XEvent *);
376 static void unmap(XEvent *);
377 static char *kmap(KeySym, uint);
378 static void kpress(XEvent *);
379 static void cmessage(XEvent *);
380 static void cresize(int, int);
381 static void resize(XEvent *);
382 static void focus(XEvent *);
383 static void brelease(XEvent *);
384 static void bpress(XEvent *);
385 static void bmotion(XEvent *);
386 static void selnotify(XEvent *);
387 static void selclear(XEvent *);
388 static void selrequest(XEvent *);
390 static void selinit(void);
391 static inline bool selected(int, int);
392 static void selcopy(void);
393 static void selscroll(int, int);
394 static void selsnap(int, int *, int *, int);
396 static int utf8decode(char *, long *);
397 static int utf8encode(long *, char *);
398 static int utf8size(char *);
399 static int isfullutf8(char *, int);
401 static ssize_t xwrite(int, char *, size_t);
402 static void *xmalloc(size_t);
403 static void *xrealloc(void *, size_t);
404 static void *xcalloc(size_t, size_t);
406 static void (*handler[LASTEvent])(XEvent *) = {
408 [ClientMessage] = cmessage,
409 [ConfigureNotify] = resize,
410 [VisibilityNotify] = visibility,
411 [UnmapNotify] = unmap,
415 [MotionNotify] = bmotion,
416 [ButtonPress] = bpress,
417 [ButtonRelease] = brelease,
418 [SelectionClear] = selclear,
419 [SelectionNotify] = selnotify,
420 [SelectionRequest] = selrequest,
427 static CSIEscape csiescseq;
428 static STREscape strescseq;
431 static Selection sel;
432 static int iofd = -1;
433 static char **opt_cmd = NULL;
434 static char *opt_io = NULL;
435 static char *opt_title = NULL;
436 static char *opt_embed = NULL;
437 static char *opt_class = NULL;
438 static char *opt_font = NULL;
440 static char *usedfont = NULL;
441 static int usedfontsize = 0;
443 /* Font Ring Cache */
458 * Fontcache is a ring buffer, with frccur as current position and frclen as
459 * the current length of used elements.
462 static Fontcache frc[1024];
463 static int frccur = -1, frclen = 0;
466 xwrite(int fd, char *s, size_t len) {
470 ssize_t r = write(fd, s, len);
480 xmalloc(size_t len) {
481 void *p = malloc(len);
484 die("Out of memory\n");
490 xrealloc(void *p, size_t len) {
491 if((p = realloc(p, len)) == NULL)
492 die("Out of memory\n");
498 xcalloc(size_t nmemb, size_t size) {
499 void *p = calloc(nmemb, size);
502 die("Out of memory\n");
508 utf8decode(char *s, long *u) {
514 if(~c & B7) { /* 0xxxxxxx */
517 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
518 *u = c&(B4|B3|B2|B1|B0);
520 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
521 *u = c&(B3|B2|B1|B0);
523 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
530 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
532 if((c & (B7|B6)) != B7) /* 10xxxxxx */
535 *u |= c & (B5|B4|B3|B2|B1|B0);
538 if((n == 1 && *u < 0x80) ||
539 (n == 2 && *u < 0x800) ||
540 (n == 3 && *u < 0x10000) ||
541 (*u >= 0xD800 && *u <= 0xDFFF)) {
553 utf8encode(long *u, char *s) {
561 *sp = uc; /* 0xxxxxxx */
563 } else if(*u < 0x800) {
564 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
566 } else if(uc < 0x10000) {
567 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
569 } else if(uc <= 0x10FFFF) {
570 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
576 for(i=n,++sp; i>0; --i,++sp)
577 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
589 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
590 UTF-8 otherwise return 0 */
592 isfullutf8(char *s, int b) {
600 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
602 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
604 ((b == 2) && (*c2&(B7|B6)) == B7))) {
606 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
608 ((b == 2) && (*c2&(B7|B6)) == B7) ||
609 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
622 } else if((c&(B7|B6|B5)) == (B7|B6)) {
624 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
633 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
634 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
638 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
639 if(sel.xtarget == None)
640 sel.xtarget = XA_STRING;
648 return LIMIT(x, 0, term.col-1);
656 return LIMIT(y, 0, term.row-1);
660 selected(int x, int y) {
663 if(sel.ey == y && sel.by == y) {
664 bx = MIN(sel.bx, sel.ex);
665 ex = MAX(sel.bx, sel.ex);
667 return BETWEEN(x, bx, ex);
670 if(sel.type == SEL_RECTANGULAR) {
671 return ((sel.b.y <= y && y <= sel.e.y)
672 && (sel.b.x <= x && x <= sel.e.x));
674 return ((sel.b.y < y && y < sel.e.y)
675 || (y == sel.e.y && x <= sel.e.x))
676 || (y == sel.b.y && x >= sel.b.x
677 && (x <= sel.e.x || sel.b.y != sel.e.y));
681 selsnap(int mode, int *x, int *y, int direction) {
684 while(*x > 0 && *x < term.col-1
685 && term.line[*y][*x + direction].c[0] != ' ') {
690 *x = (direction < 0) ? 0 : term.col - 1;
698 getbuttoninfo(XEvent *e) {
700 uint state = e->xbutton.state &~Button1Mask;
702 sel.alt = IS_SET(MODE_ALTSCREEN);
704 sel.ex = x2col(e->xbutton.x);
705 sel.ey = y2row(e->xbutton.y);
708 || (sel.by == sel.ey && sel.bx < sel.ex)) {
709 selsnap(sel.snap, &sel.bx, &sel.by, -1);
710 selsnap(sel.snap, &sel.ex, &sel.ey, +1);
712 selsnap(sel.snap, &sel.ex, &sel.ey, -1);
713 selsnap(sel.snap, &sel.bx, &sel.by, +1);
716 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
717 sel.b.y = MIN(sel.by, sel.ey);
718 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
719 sel.e.y = MAX(sel.by, sel.ey);
721 sel.type = SEL_REGULAR;
722 for(type = 1; type < LEN(selmasks); ++type) {
723 if(match(selmasks[type], state)) {
731 mousereport(XEvent *e) {
732 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
733 button = e->xbutton.button, state = e->xbutton.state,
736 static int ob, ox, oy;
739 if(e->xbutton.type == MotionNotify) {
740 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
744 } else if(!IS_SET(MODE_MOUSESGR)
745 && (e->xbutton.type == ButtonRelease
746 || button == AnyButton)) {
752 if(e->xbutton.type == ButtonPress) {
758 button += (state & ShiftMask ? 4 : 0)
759 + (state & Mod4Mask ? 8 : 0)
760 + (state & ControlMask ? 16 : 0);
763 if(IS_SET(MODE_MOUSESGR)) {
764 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
766 e->xbutton.type == ButtonRelease ? 'm' : 'M');
767 } else if(x < 223 && y < 223) {
768 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
769 32+button, 32+x+1, 32+y+1);
782 if(IS_SET(MODE_MOUSE)) {
787 for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
788 if(e->xbutton.button == mk->b
789 && match(mk->mask, e->xbutton.state)) {
790 ttywrite(mk->s, strlen(mk->s));
791 if(IS_SET(MODE_ECHO))
792 techo(mk->s, strlen(mk->s));
797 if(e->xbutton.button == Button1) {
798 gettimeofday(&now, NULL);
800 /* Clear previous selection, logically and visually. */
803 tsetdirt(sel.b.y, sel.e.y);
807 sel.type = SEL_REGULAR;
808 sel.ex = sel.bx = x2col(e->xbutton.x);
809 sel.ey = sel.by = y2row(e->xbutton.y);
812 * If the user clicks below predefined timeouts specific
813 * snapping behaviour is exposed.
815 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
816 sel.snap = SNAP_LINE;
817 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
818 sel.snap = SNAP_WORD;
822 selsnap(sel.snap, &sel.bx, &sel.by, -1);
823 selsnap(sel.snap, &sel.ex, &sel.ey, 1);
830 * Draw selection, unless it's regular and we don't want to
831 * make clicks visible
835 tsetdirt(sel.b.y, sel.e.y);
838 sel.tclick2 = sel.tclick1;
846 int x, y, bufsize, size;
852 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
853 ptr = str = xmalloc(bufsize);
855 /* append every set & selected glyph to the selection */
856 for(y = sel.b.y; y < sel.e.y + 1; y++) {
857 gp = &term.line[y][0];
858 last = gp + term.col;
860 while(--last >= gp && !(selected(last - gp, y) && \
861 strcmp(last->c, " ") != 0))
864 for(x = 0; gp <= last; x++, ++gp) {
868 size = utf8size(gp->c);
869 memcpy(ptr, gp->c, size);
874 * Copy and pasting of line endings is inconsistent
875 * in the inconsistent terminal and GUI world.
876 * The best solution seems like to produce '\n' when
877 * something is copied from st and convert '\n' to
878 * '\r', when something to be pasted is received by
880 * FIXME: Fix the computer world.
882 if(y < sel.e.y && !((gp-1)->mode & ATTR_WRAP))
891 selnotify(XEvent *e) {
892 ulong nitems, ofs, rem;
894 uchar *data, *last, *repl;
899 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
900 False, AnyPropertyType, &type, &format,
901 &nitems, &rem, &data)) {
902 fprintf(stderr, "Clipboard allocation failed\n");
907 * As seen in selcopy:
908 * Line endings are inconsistent in the terminal and GUI world
909 * copy and pasting. When receiving some selection data,
910 * replace all '\n' with '\r'.
911 * FIXME: Fix the computer world.
914 last = data + nitems * format / 8;
915 while((repl = memchr(repl, '\n', last - repl))) {
919 ttywrite((const char *)data, nitems * format / 8);
921 /* number of 32-bit chunks returned */
922 ofs += nitems * format / 32;
927 selpaste(const Arg *dummy) {
928 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
929 xw.win, CurrentTime);
933 clippaste(const Arg *dummy) {
936 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
937 XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
938 xw.win, CurrentTime);
942 selclear(XEvent *e) {
946 tsetdirt(sel.b.y, sel.e.y);
950 selrequest(XEvent *e) {
951 XSelectionRequestEvent *xsre;
953 Atom xa_targets, string;
955 xsre = (XSelectionRequestEvent *) e;
956 xev.type = SelectionNotify;
957 xev.requestor = xsre->requestor;
958 xev.selection = xsre->selection;
959 xev.target = xsre->target;
960 xev.time = xsre->time;
964 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
965 if(xsre->target == xa_targets) {
966 /* respond with the supported type */
967 string = sel.xtarget;
968 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
969 XA_ATOM, 32, PropModeReplace,
970 (uchar *) &string, 1);
971 xev.property = xsre->property;
972 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
973 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
974 xsre->target, 8, PropModeReplace,
975 (uchar *) sel.clip, strlen(sel.clip));
976 xev.property = xsre->property;
979 /* all done, send a notification to the listener */
980 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
981 fprintf(stderr, "Error sending SelectionNotify event\n");
986 /* register the selection for both the clipboard and the primary */
992 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
994 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
995 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
999 brelease(XEvent *e) {
1000 if(IS_SET(MODE_MOUSE)) {
1005 if(e->xbutton.button == Button2) {
1007 } else if(e->xbutton.button == Button1) {
1015 term.dirty[sel.ey] = 1;
1020 bmotion(XEvent *e) {
1021 int oldey, oldex, oldsby, oldsey;
1023 if(IS_SET(MODE_MOUSE)) {
1038 if(oldey != sel.ey || oldex != sel.ex) {
1039 tsetdirt(MIN(sel.b.y, oldsby), MAX(sel.e.y, oldsey));
1044 die(const char *errstr, ...) {
1047 va_start(ap, errstr);
1048 vfprintf(stderr, errstr, ap);
1056 char *envshell = getenv("SHELL");
1057 const struct passwd *pass = getpwuid(getuid());
1058 char buf[sizeof(long) * 8 + 1];
1060 unsetenv("COLUMNS");
1062 unsetenv("TERMCAP");
1065 setenv("LOGNAME", pass->pw_name, 1);
1066 setenv("USER", pass->pw_name, 1);
1067 setenv("SHELL", pass->pw_shell, 0);
1068 setenv("HOME", pass->pw_dir, 0);
1071 snprintf(buf, sizeof(buf), "%lu", xw.win);
1072 setenv("WINDOWID", buf, 1);
1074 signal(SIGCHLD, SIG_DFL);
1075 signal(SIGHUP, SIG_DFL);
1076 signal(SIGINT, SIG_DFL);
1077 signal(SIGQUIT, SIG_DFL);
1078 signal(SIGTERM, SIG_DFL);
1079 signal(SIGALRM, SIG_DFL);
1081 DEFAULT(envshell, shell);
1082 setenv("TERM", termname, 1);
1083 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
1084 execvp(args[0], args);
1092 if(waitpid(pid, &stat, 0) < 0)
1093 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
1095 if(WIFEXITED(stat)) {
1096 exit(WEXITSTATUS(stat));
1105 struct winsize w = {term.row, term.col, 0, 0};
1107 /* seems to work fine on linux, openbsd and freebsd */
1108 if(openpty(&m, &s, NULL, NULL, &w) < 0)
1109 die("openpty failed: %s\n", SERRNO);
1111 switch(pid = fork()) {
1113 die("fork failed\n");
1116 setsid(); /* create a new process group */
1117 dup2(s, STDIN_FILENO);
1118 dup2(s, STDOUT_FILENO);
1119 dup2(s, STDERR_FILENO);
1120 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1121 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
1129 signal(SIGCHLD, sigchld);
1131 iofd = (!strcmp(opt_io, "-")) ?
1133 open(opt_io, O_WRONLY | O_CREAT, 0666);
1135 fprintf(stderr, "Error opening %s:%s\n",
1136 opt_io, strerror(errno));
1146 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
1148 fprintf(stderr, "\n");
1153 static char buf[BUFSIZ];
1154 static int buflen = 0;
1157 int charsize; /* size of utf8 char in bytes */
1161 /* append read bytes to unprocessed bytes */
1162 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1163 die("Couldn't read from shell: %s\n", SERRNO);
1165 /* process every complete utf8 char */
1168 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1169 charsize = utf8decode(ptr, &utf8c);
1170 utf8encode(&utf8c, s);
1176 /* keep any uncomplete utf8 char for the next call */
1177 memmove(buf, ptr, buflen);
1181 ttywrite(const char *s, size_t n) {
1182 if(write(cmdfd, s, n) == -1)
1183 die("write error on tty: %s\n", SERRNO);
1190 w.ws_row = term.row;
1191 w.ws_col = term.col;
1192 w.ws_xpixel = xw.tw;
1193 w.ws_ypixel = xw.th;
1194 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1195 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1199 tattrset(int attr) {
1202 for(i = 0; i < term.row-1; i++) {
1203 for(j = 0; j < term.col-1; j++) {
1204 if(term.line[i][j].mode & attr)
1213 tsetdirt(int top, int bot) {
1216 LIMIT(top, 0, term.row-1);
1217 LIMIT(bot, 0, term.row-1);
1219 for(i = top; i <= bot; i++)
1224 tsetdirtattr(int attr) {
1227 for(i = 0; i < term.row-1; i++) {
1228 for(j = 0; j < term.col-1; j++) {
1229 if(term.line[i][j].mode & attr) {
1239 tsetdirt(0, term.row-1);
1246 if(mode == CURSOR_SAVE) {
1248 } else if(mode == CURSOR_LOAD) {
1258 term.c = (TCursor){{
1262 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1264 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1265 for(i = tabspaces; i < term.col; i += tabspaces)
1268 term.bot = term.row - 1;
1269 term.mode = MODE_WRAP;
1271 tclearregion(0, 0, term.col-1, term.row-1);
1273 tcursor(CURSOR_SAVE);
1277 tnew(int col, int row) {
1278 memset(&term, 0, sizeof(Term));
1287 Line *tmp = term.line;
1289 term.line = term.alt;
1291 term.mode ^= MODE_ALTSCREEN;
1296 tscrolldown(int orig, int n) {
1300 LIMIT(n, 0, term.bot-orig+1);
1302 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1304 for(i = term.bot; i >= orig+n; i--) {
1305 temp = term.line[i];
1306 term.line[i] = term.line[i-n];
1307 term.line[i-n] = temp;
1310 term.dirty[i-n] = 1;
1317 tscrollup(int orig, int n) {
1320 LIMIT(n, 0, term.bot-orig+1);
1322 tclearregion(0, orig, term.col-1, orig+n-1);
1324 for(i = orig; i <= term.bot-n; i++) {
1325 temp = term.line[i];
1326 term.line[i] = term.line[i+n];
1327 term.line[i+n] = temp;
1330 term.dirty[i+n] = 1;
1333 selscroll(orig, -n);
1337 selscroll(int orig, int n) {
1341 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1342 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1346 if(sel.type == SEL_RECTANGULAR) {
1347 if(sel.by < term.top)
1349 if(sel.ey > term.bot)
1352 if(sel.by < term.top) {
1356 if(sel.ey > term.bot) {
1361 sel.b.y = sel.by, sel.b.x = sel.bx;
1362 sel.e.y = sel.ey, sel.e.x = sel.ex;
1367 tnewline(int first_col) {
1371 tscrollup(term.top, 1);
1375 tmoveto(first_col ? 0 : term.c.x, y);
1380 char *p = csiescseq.buf, *np;
1389 csiescseq.buf[csiescseq.len] = '\0';
1390 while(p < csiescseq.buf+csiescseq.len) {
1392 v = strtol(p, &np, 10);
1395 if(v == LONG_MAX || v == LONG_MIN)
1397 csiescseq.arg[csiescseq.narg++] = v;
1399 if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1403 csiescseq.mode = *p;
1406 /* for absolute user moves, when decom is set */
1408 tmoveato(int x, int y) {
1409 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1413 tmoveto(int x, int y) {
1416 if(term.c.state & CURSOR_ORIGIN) {
1421 maxy = term.row - 1;
1423 LIMIT(x, 0, term.col-1);
1424 LIMIT(y, miny, maxy);
1425 term.c.state &= ~CURSOR_WRAPNEXT;
1431 tsetchar(char *c, Glyph *attr, int x, int y) {
1432 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1433 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1434 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1435 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1436 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1437 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1438 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1439 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1440 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1444 * The table is proudly stolen from rxvt.
1446 if(attr->mode & ATTR_GFX) {
1447 if(c[0] >= 0x41 && c[0] <= 0x7e
1448 && vt100_0[c[0] - 0x41]) {
1449 c = vt100_0[c[0] - 0x41];
1454 term.line[y][x] = *attr;
1455 memcpy(term.line[y][x].c, c, UTF_SIZ);
1459 tclearregion(int x1, int y1, int x2, int y2) {
1463 temp = x1, x1 = x2, x2 = temp;
1465 temp = y1, y1 = y2, y2 = temp;
1467 LIMIT(x1, 0, term.col-1);
1468 LIMIT(x2, 0, term.col-1);
1469 LIMIT(y1, 0, term.row-1);
1470 LIMIT(y2, 0, term.row-1);
1472 for(y = y1; y <= y2; y++) {
1474 for(x = x1; x <= x2; x++) {
1477 term.line[y][x] = term.c.attr;
1478 memcpy(term.line[y][x].c, " ", 2);
1484 tdeletechar(int n) {
1485 int src = term.c.x + n;
1487 int size = term.col - src;
1489 term.dirty[term.c.y] = 1;
1491 if(src >= term.col) {
1492 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1496 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1497 size * sizeof(Glyph));
1498 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1502 tinsertblank(int n) {
1505 int size = term.col - dst;
1507 term.dirty[term.c.y] = 1;
1509 if(dst >= term.col) {
1510 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1514 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1515 size * sizeof(Glyph));
1516 tclearregion(src, term.c.y, dst - 1, term.c.y);
1520 tinsertblankline(int n) {
1521 if(term.c.y < term.top || term.c.y > term.bot)
1524 tscrolldown(term.c.y, n);
1528 tdeleteline(int n) {
1529 if(term.c.y < term.top || term.c.y > term.bot)
1532 tscrollup(term.c.y, n);
1536 tsetattr(int *attr, int l) {
1539 for(i = 0; i < l; i++) {
1542 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE \
1543 | ATTR_BOLD | ATTR_ITALIC \
1545 term.c.attr.fg = defaultfg;
1546 term.c.attr.bg = defaultbg;
1549 term.c.attr.mode |= ATTR_BOLD;
1552 term.c.attr.mode |= ATTR_ITALIC;
1555 term.c.attr.mode |= ATTR_UNDERLINE;
1557 case 5: /* slow blink */
1558 case 6: /* rapid blink */
1559 term.c.attr.mode |= ATTR_BLINK;
1562 term.c.attr.mode |= ATTR_REVERSE;
1566 term.c.attr.mode &= ~ATTR_BOLD;
1569 term.c.attr.mode &= ~ATTR_ITALIC;
1572 term.c.attr.mode &= ~ATTR_UNDERLINE;
1576 term.c.attr.mode &= ~ATTR_BLINK;
1579 term.c.attr.mode &= ~ATTR_REVERSE;
1582 if(i + 2 < l && attr[i + 1] == 5) {
1584 if(BETWEEN(attr[i], 0, 255)) {
1585 term.c.attr.fg = attr[i];
1588 "erresc: bad fgcolor %d\n",
1593 "erresc(38): gfx attr %d unknown\n",
1598 term.c.attr.fg = defaultfg;
1601 if(i + 2 < l && attr[i + 1] == 5) {
1603 if(BETWEEN(attr[i], 0, 255)) {
1604 term.c.attr.bg = attr[i];
1607 "erresc: bad bgcolor %d\n",
1612 "erresc(48): gfx attr %d unknown\n",
1617 term.c.attr.bg = defaultbg;
1620 if(BETWEEN(attr[i], 30, 37)) {
1621 term.c.attr.fg = attr[i] - 30;
1622 } else if(BETWEEN(attr[i], 40, 47)) {
1623 term.c.attr.bg = attr[i] - 40;
1624 } else if(BETWEEN(attr[i], 90, 97)) {
1625 term.c.attr.fg = attr[i] - 90 + 8;
1626 } else if(BETWEEN(attr[i], 100, 107)) {
1627 term.c.attr.bg = attr[i] - 100 + 8;
1630 "erresc(default): gfx attr %d unknown\n",
1631 attr[i]), csidump();
1639 tsetscroll(int t, int b) {
1642 LIMIT(t, 0, term.row-1);
1643 LIMIT(b, 0, term.row-1);
1653 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1656 tsetmode(bool priv, bool set, int *args, int narg) {
1660 for(lim = args + narg; args < lim; ++args) {
1664 case 1: /* DECCKM -- Cursor key */
1665 MODBIT(term.mode, set, MODE_APPCURSOR);
1667 case 5: /* DECSCNM -- Reverse video */
1669 MODBIT(term.mode, set, MODE_REVERSE);
1670 if(mode != term.mode)
1671 redraw(REDRAW_TIMEOUT);
1673 case 6: /* DECOM -- Origin */
1674 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1677 case 7: /* DECAWM -- Auto wrap */
1678 MODBIT(term.mode, set, MODE_WRAP);
1680 case 0: /* Error (IGNORED) */
1681 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1682 case 3: /* DECCOLM -- Column (IGNORED) */
1683 case 4: /* DECSCLM -- Scroll (IGNORED) */
1684 case 8: /* DECARM -- Auto repeat (IGNORED) */
1685 case 18: /* DECPFF -- Printer feed (IGNORED) */
1686 case 19: /* DECPEX -- Printer extent (IGNORED) */
1687 case 42: /* DECNRCM -- National characters (IGNORED) */
1688 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1690 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1691 MODBIT(term.mode, !set, MODE_HIDE);
1693 case 1000: /* 1000,1002: enable xterm mouse report */
1694 MODBIT(term.mode, set, MODE_MOUSEBTN);
1695 MODBIT(term.mode, 0, MODE_MOUSEMOTION);
1698 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1699 MODBIT(term.mode, 0, MODE_MOUSEBTN);
1702 MODBIT(term.mode, set, MODE_MOUSESGR);
1705 MODBIT(term.mode, set, MODE_8BIT);
1707 case 1049: /* = 1047 and 1048 */
1710 if (!allowaltscreen)
1713 alt = IS_SET(MODE_ALTSCREEN);
1715 tclearregion(0, 0, term.col-1,
1718 if(set ^ alt) /* set is always 1 or 0 */
1724 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1728 "erresc: unknown private set/reset mode %d\n",
1734 case 0: /* Error (IGNORED) */
1736 case 2: /* KAM -- keyboard action */
1737 MODBIT(term.mode, set, MODE_KBDLOCK);
1739 case 4: /* IRM -- Insertion-replacement */
1740 MODBIT(term.mode, set, MODE_INSERT);
1742 case 12: /* SRM -- Send/Receive */
1743 MODBIT(term.mode, !set, MODE_ECHO);
1745 case 20: /* LNM -- Linefeed/new line */
1746 MODBIT(term.mode, set, MODE_CRLF);
1750 "erresc: unknown set/reset mode %d\n",
1762 switch(csiescseq.mode) {
1765 fprintf(stderr, "erresc: unknown csi ");
1769 case '@': /* ICH -- Insert <n> blank char */
1770 DEFAULT(csiescseq.arg[0], 1);
1771 tinsertblank(csiescseq.arg[0]);
1773 case 'A': /* CUU -- Cursor <n> Up */
1774 DEFAULT(csiescseq.arg[0], 1);
1775 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1777 case 'B': /* CUD -- Cursor <n> Down */
1778 case 'e': /* VPR --Cursor <n> Down */
1779 DEFAULT(csiescseq.arg[0], 1);
1780 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1782 case 'c': /* DA -- Device Attributes */
1783 if(csiescseq.arg[0] == 0)
1784 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1786 case 'C': /* CUF -- Cursor <n> Forward */
1787 case 'a': /* HPR -- Cursor <n> Forward */
1788 DEFAULT(csiescseq.arg[0], 1);
1789 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1791 case 'D': /* CUB -- Cursor <n> Backward */
1792 DEFAULT(csiescseq.arg[0], 1);
1793 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1795 case 'E': /* CNL -- Cursor <n> Down and first col */
1796 DEFAULT(csiescseq.arg[0], 1);
1797 tmoveto(0, term.c.y+csiescseq.arg[0]);
1799 case 'F': /* CPL -- Cursor <n> Up and first col */
1800 DEFAULT(csiescseq.arg[0], 1);
1801 tmoveto(0, term.c.y-csiescseq.arg[0]);
1803 case 'g': /* TBC -- Tabulation clear */
1804 switch(csiescseq.arg[0]) {
1805 case 0: /* clear current tab stop */
1806 term.tabs[term.c.x] = 0;
1808 case 3: /* clear all the tabs */
1809 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1815 case 'G': /* CHA -- Move to <col> */
1817 DEFAULT(csiescseq.arg[0], 1);
1818 tmoveto(csiescseq.arg[0]-1, term.c.y);
1820 case 'H': /* CUP -- Move to <row> <col> */
1822 DEFAULT(csiescseq.arg[0], 1);
1823 DEFAULT(csiescseq.arg[1], 1);
1824 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1826 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1827 DEFAULT(csiescseq.arg[0], 1);
1828 while(csiescseq.arg[0]--)
1831 case 'J': /* ED -- Clear screen */
1833 switch(csiescseq.arg[0]) {
1835 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1836 if(term.c.y < term.row-1) {
1837 tclearregion(0, term.c.y+1, term.col-1,
1843 tclearregion(0, 0, term.col-1, term.c.y-1);
1844 tclearregion(0, term.c.y, term.c.x, term.c.y);
1847 tclearregion(0, 0, term.col-1, term.row-1);
1853 case 'K': /* EL -- Clear line */
1854 switch(csiescseq.arg[0]) {
1856 tclearregion(term.c.x, term.c.y, term.col-1,
1860 tclearregion(0, term.c.y, term.c.x, term.c.y);
1863 tclearregion(0, term.c.y, term.col-1, term.c.y);
1867 case 'S': /* SU -- Scroll <n> line up */
1868 DEFAULT(csiescseq.arg[0], 1);
1869 tscrollup(term.top, csiescseq.arg[0]);
1871 case 'T': /* SD -- Scroll <n> line down */
1872 DEFAULT(csiescseq.arg[0], 1);
1873 tscrolldown(term.top, csiescseq.arg[0]);
1875 case 'L': /* IL -- Insert <n> blank lines */
1876 DEFAULT(csiescseq.arg[0], 1);
1877 tinsertblankline(csiescseq.arg[0]);
1879 case 'l': /* RM -- Reset Mode */
1880 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1882 case 'M': /* DL -- Delete <n> lines */
1883 DEFAULT(csiescseq.arg[0], 1);
1884 tdeleteline(csiescseq.arg[0]);
1886 case 'X': /* ECH -- Erase <n> char */
1887 DEFAULT(csiescseq.arg[0], 1);
1888 tclearregion(term.c.x, term.c.y,
1889 term.c.x + csiescseq.arg[0] - 1, term.c.y);
1891 case 'P': /* DCH -- Delete <n> char */
1892 DEFAULT(csiescseq.arg[0], 1);
1893 tdeletechar(csiescseq.arg[0]);
1895 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1896 DEFAULT(csiescseq.arg[0], 1);
1897 while(csiescseq.arg[0]--)
1900 case 'd': /* VPA -- Move to <row> */
1901 DEFAULT(csiescseq.arg[0], 1);
1902 tmoveato(term.c.x, csiescseq.arg[0]-1);
1904 case 'h': /* SM -- Set terminal mode */
1905 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1907 case 'm': /* SGR -- Terminal attribute (color) */
1908 tsetattr(csiescseq.arg, csiescseq.narg);
1910 case 'r': /* DECSTBM -- Set Scrolling Region */
1911 if(csiescseq.priv) {
1914 DEFAULT(csiescseq.arg[0], 1);
1915 DEFAULT(csiescseq.arg[1], term.row);
1916 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1920 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1921 tcursor(CURSOR_SAVE);
1923 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1924 tcursor(CURSOR_LOAD);
1935 for(i = 0; i < csiescseq.len; i++) {
1936 c = csiescseq.buf[i] & 0xff;
1939 } else if(c == '\n') {
1941 } else if(c == '\r') {
1943 } else if(c == 0x1b) {
1946 printf("(%02x)", c);
1954 memset(&csiescseq, 0, sizeof(csiescseq));
1963 narg = strescseq.narg;
1965 switch(strescseq.type) {
1966 case ']': /* OSC -- Operating System Command */
1967 switch(i = atoi(strescseq.args[0])) {
1972 xsettitle(strescseq.args[1]);
1974 case 4: /* color set */
1977 p = strescseq.args[2];
1979 case 104: /* color reset, here p = NULL */
1980 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
1981 if (!xsetcolorname(j, p)) {
1982 fprintf(stderr, "erresc: invalid color %s\n", p);
1985 * TODO if defaultbg color is changed, borders
1992 fprintf(stderr, "erresc: unknown str ");
1997 case 'k': /* old title set compatibility */
1998 xsettitle(strescseq.args[0]);
2000 case 'P': /* DSC -- Device Control String */
2001 case '_': /* APC -- Application Program Command */
2002 case '^': /* PM -- Privacy Message */
2004 fprintf(stderr, "erresc: unknown str ");
2013 char *p = strescseq.buf;
2016 strescseq.buf[strescseq.len] = '\0';
2017 while(p && strescseq.narg < STR_ARG_SIZ)
2018 strescseq.args[strescseq.narg++] = strsep(&p, ";");
2026 printf("ESC%c", strescseq.type);
2027 for(i = 0; i < strescseq.len; i++) {
2028 c = strescseq.buf[i] & 0xff;
2031 } else if(isprint(c)) {
2033 } else if(c == '\n') {
2035 } else if(c == '\r') {
2037 } else if(c == 0x1b) {
2040 printf("(%02x)", c);
2048 memset(&strescseq, 0, sizeof(strescseq));
2052 tputtab(bool forward) {
2058 for(++x; x < term.col && !term.tabs[x]; ++x)
2063 for(--x; x > 0 && !term.tabs[x]; --x)
2066 tmoveto(x, term.c.y);
2070 techo(char *buf, int len) {
2071 for(; len > 0; buf++, len--) {
2074 if(c == '\033') { /* escape */
2077 } else if(c < '\x20') { /* control code */
2078 if(c != '\n' && c != '\r' && c != '\t') {
2092 tputc(char *c, int len) {
2094 bool control = ascii < '\x20' || ascii == 0177;
2097 if(xwrite(iofd, c, len) < 0) {
2098 fprintf(stderr, "Error writing in %s:%s\n",
2099 opt_io, strerror(errno));
2106 * STR sequences must be checked before anything else
2107 * because it can use some control codes as part of the sequence.
2109 if(term.esc & ESC_STR) {
2112 term.esc = ESC_START | ESC_STR_END;
2114 case '\a': /* backwards compatibility to xterm */
2119 if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
2120 memmove(&strescseq.buf[strescseq.len], c, len);
2121 strescseq.len += len;
2124 * Here is a bug in terminals. If the user never sends
2125 * some code to stop the str or esc command, then st
2126 * will stop responding. But this is better than
2127 * silently failing with unknown characters. At least
2128 * then users will report back.
2130 * In the case users ever get fixed, here is the code:
2142 * Actions of control codes must be performed as soon they arrive
2143 * because they can be embedded inside a control sequence, and
2144 * they must not cause conflicts with sequences.
2152 tmoveto(term.c.x-1, term.c.y);
2155 tmoveto(0, term.c.y);
2160 /* go to first col if the mode is set */
2161 tnewline(IS_SET(MODE_CRLF));
2163 case '\a': /* BEL */
2164 if(!(xw.state & WIN_FOCUSED))
2167 case '\033': /* ESC */
2169 term.esc = ESC_START;
2171 case '\016': /* SO */
2172 case '\017': /* SI */
2174 * Different charsets are hard to handle. Applications
2175 * should use the right alt charset escapes for the
2176 * only reason they still exist: line drawing. The
2177 * rest is incompatible history st should not support.
2180 case '\032': /* SUB */
2181 case '\030': /* CAN */
2184 case '\005': /* ENQ (IGNORED) */
2185 case '\000': /* NUL (IGNORED) */
2186 case '\021': /* XON (IGNORED) */
2187 case '\023': /* XOFF (IGNORED) */
2188 case 0177: /* DEL (IGNORED) */
2191 } else if(term.esc & ESC_START) {
2192 if(term.esc & ESC_CSI) {
2193 csiescseq.buf[csiescseq.len++] = ascii;
2194 if(BETWEEN(ascii, 0x40, 0x7E)
2195 || csiescseq.len >= \
2196 sizeof(csiescseq.buf)-1) {
2201 } else if(term.esc & ESC_STR_END) {
2205 } else if(term.esc & ESC_ALTCHARSET) {
2207 case '0': /* Line drawing set */
2208 term.c.attr.mode |= ATTR_GFX;
2210 case 'B': /* USASCII */
2211 term.c.attr.mode &= ~ATTR_GFX;
2213 case 'A': /* UK (IGNORED) */
2214 case '<': /* multinational charset (IGNORED) */
2215 case '5': /* Finnish (IGNORED) */
2216 case 'C': /* Finnish (IGNORED) */
2217 case 'K': /* German (IGNORED) */
2220 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2223 } else if(term.esc & ESC_TEST) {
2224 if(ascii == '8') { /* DEC screen alignment test. */
2225 char E[UTF_SIZ] = "E";
2228 for(x = 0; x < term.col; ++x) {
2229 for(y = 0; y < term.row; ++y)
2230 tsetchar(E, &term.c.attr, x, y);
2237 term.esc |= ESC_CSI;
2240 term.esc |= ESC_TEST;
2242 case 'P': /* DCS -- Device Control String */
2243 case '_': /* APC -- Application Program Command */
2244 case '^': /* PM -- Privacy Message */
2245 case ']': /* OSC -- Operating System Command */
2246 case 'k': /* old title set compatibility */
2248 strescseq.type = ascii;
2249 term.esc |= ESC_STR;
2251 case '(': /* set primary charset G0 */
2252 term.esc |= ESC_ALTCHARSET;
2254 case ')': /* set secondary charset G1 (IGNORED) */
2255 case '*': /* set tertiary charset G2 (IGNORED) */
2256 case '+': /* set quaternary charset G3 (IGNORED) */
2259 case 'D': /* IND -- Linefeed */
2260 if(term.c.y == term.bot) {
2261 tscrollup(term.top, 1);
2263 tmoveto(term.c.x, term.c.y+1);
2267 case 'E': /* NEL -- Next line */
2268 tnewline(1); /* always go to first col */
2271 case 'H': /* HTS -- Horizontal tab stop */
2272 term.tabs[term.c.x] = 1;
2275 case 'M': /* RI -- Reverse index */
2276 if(term.c.y == term.top) {
2277 tscrolldown(term.top, 1);
2279 tmoveto(term.c.x, term.c.y-1);
2283 case 'Z': /* DECID -- Identify Terminal */
2284 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2287 case 'c': /* RIS -- Reset to inital state */
2292 case '=': /* DECPAM -- Application keypad */
2293 term.mode |= MODE_APPKEYPAD;
2296 case '>': /* DECPNM -- Normal keypad */
2297 term.mode &= ~MODE_APPKEYPAD;
2300 case '7': /* DECSC -- Save Cursor */
2301 tcursor(CURSOR_SAVE);
2304 case '8': /* DECRC -- Restore Cursor */
2305 tcursor(CURSOR_LOAD);
2308 case '\\': /* ST -- Stop */
2312 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2313 (uchar) ascii, isprint(ascii)? ascii:'.');
2318 * All characters which form part of a sequence are not
2324 * Display control codes only if we are in graphic mode
2326 if(control && !(term.c.attr.mode & ATTR_GFX))
2328 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2330 if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2331 term.line[term.c.y][term.c.x].mode |= ATTR_WRAP;
2335 if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col) {
2336 memmove(&term.line[term.c.y][term.c.x+1],
2337 &term.line[term.c.y][term.c.x],
2338 (term.col - term.c.x - 1) * sizeof(Glyph));
2341 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2342 if(term.c.x+1 < term.col) {
2343 tmoveto(term.c.x+1, term.c.y);
2345 term.c.state |= CURSOR_WRAPNEXT;
2350 tresize(int col, int row) {
2352 int minrow = MIN(row, term.row);
2353 int mincol = MIN(col, term.col);
2354 int slide = term.c.y - row + 1;
2358 if(col < 1 || row < 1)
2361 /* free unneeded rows */
2365 * slide screen to keep cursor where we expect it -
2366 * tscrollup would work here, but we can optimize to
2367 * memmove because we're freeing the earlier lines
2369 for(/* i = 0 */; i < slide; i++) {
2373 memmove(term.line, term.line + slide, row * sizeof(Line));
2374 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2376 for(i += row; i < term.row; i++) {
2381 /* resize to new height */
2382 term.line = xrealloc(term.line, row * sizeof(Line));
2383 term.alt = xrealloc(term.alt, row * sizeof(Line));
2384 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2385 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2387 /* resize each row to new width, zero-pad if needed */
2388 for(i = 0; i < minrow; i++) {
2390 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2391 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2394 /* allocate any new rows */
2395 for(/* i == minrow */; i < row; i++) {
2397 term.line[i] = xcalloc(col, sizeof(Glyph));
2398 term.alt [i] = xcalloc(col, sizeof(Glyph));
2400 if(col > term.col) {
2401 bp = term.tabs + term.col;
2403 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2404 while(--bp > term.tabs && !*bp)
2406 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2409 /* update terminal size */
2412 /* reset scrolling region */
2413 tsetscroll(0, row-1);
2414 /* make use of the LIMIT in tmoveto */
2415 tmoveto(term.c.x, term.c.y);
2416 /* Clearing both screens */
2419 if(mincol < col && 0 < minrow) {
2420 tclearregion(mincol, 0, col - 1, minrow - 1);
2422 if(0 < col && minrow < row) {
2423 tclearregion(0, minrow, col - 1, row - 1);
2426 } while(orig != term.line);
2432 xresize(int col, int row) {
2433 xw.tw = MAX(1, col * xw.cw);
2434 xw.th = MAX(1, row * xw.ch);
2436 XFreePixmap(xw.dpy, xw.buf);
2437 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2438 DefaultDepth(xw.dpy, xw.scr));
2439 XftDrawChange(xw.draw, xw.buf);
2440 xclear(0, 0, xw.w, xw.h);
2443 static inline ushort
2444 sixd_to_16bit(int x) {
2445 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
2451 XRenderColor color = { .alpha = 0xffff };
2453 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2454 for(i = 0; i < LEN(colorname); i++) {
2457 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2458 die("Could not allocate color '%s'\n", colorname[i]);
2462 /* load colors [16-255] ; same colors as xterm */
2463 for(i = 16, r = 0; r < 6; r++) {
2464 for(g = 0; g < 6; g++) {
2465 for(b = 0; b < 6; b++) {
2466 color.red = sixd_to_16bit(r);
2467 color.green = sixd_to_16bit(g);
2468 color.blue = sixd_to_16bit(b);
2469 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
2470 die("Could not allocate color %d\n", i);
2477 for(r = 0; r < 24; r++, i++) {
2478 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
2479 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
2481 die("Could not allocate color %d\n", i);
2487 xsetcolorname(int x, const char *name) {
2488 XRenderColor color = { .alpha = 0xffff };
2490 if (x < 0 || x > LEN(colorname))
2493 if(16 <= x && x < 16 + 216) {
2494 int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
2495 color.red = sixd_to_16bit(r);
2496 color.green = sixd_to_16bit(g);
2497 color.blue = sixd_to_16bit(b);
2498 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2499 return 0; /* something went wrong */
2502 } else if (16 + 216 <= x && x < 256) {
2503 color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
2504 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2505 return 0; /* something went wrong */
2509 name = colorname[x];
2512 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
2519 xtermclear(int col1, int row1, int col2, int row2) {
2520 XftDrawRect(xw.draw,
2521 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2522 borderpx + col1 * xw.cw,
2523 borderpx + row1 * xw.ch,
2524 (col2-col1+1) * xw.cw,
2525 (row2-row1+1) * xw.ch);
2529 * Absolute coordinates.
2532 xclear(int x1, int y1, int x2, int y2) {
2533 XftDrawRect(xw.draw,
2534 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2535 x1, y1, x2-x1, y2-y1);
2540 XClassHint class = {opt_class ? opt_class : termname, termname};
2541 XWMHints wm = {.flags = InputHint, .input = 1};
2542 XSizeHints *sizeh = NULL;
2544 sizeh = XAllocSizeHints();
2545 if(xw.isfixed == False) {
2546 sizeh->flags = PSize | PResizeInc | PBaseSize;
2547 sizeh->height = xw.h;
2548 sizeh->width = xw.w;
2549 sizeh->height_inc = xw.ch;
2550 sizeh->width_inc = xw.cw;
2551 sizeh->base_height = 2 * borderpx;
2552 sizeh->base_width = 2 * borderpx;
2554 sizeh->flags = PMaxSize | PMinSize;
2555 sizeh->min_width = sizeh->max_width = xw.fw;
2556 sizeh->min_height = sizeh->max_height = xw.fh;
2559 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2564 xloadfont(Font *f, FcPattern *pattern) {
2568 match = FcFontMatch(NULL, pattern, &result);
2572 if(!(f->set = FcFontSort(0, match, FcTrue, 0, &result))) {
2573 FcPatternDestroy(match);
2577 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
2578 FcPatternDestroy(match);
2582 f->pattern = FcPatternDuplicate(pattern);
2584 f->ascent = f->match->ascent;
2585 f->descent = f->match->descent;
2587 f->rbearing = f->match->max_advance_width;
2589 f->height = f->ascent + f->descent;
2590 f->width = f->lbearing + f->rbearing;
2596 xloadfonts(char *fontstr, int fontsize) {
2601 if(fontstr[0] == '-') {
2602 pattern = XftXlfdParse(fontstr, False, False);
2604 pattern = FcNameParse((FcChar8 *)fontstr);
2608 die("st: can't open font %s\n", fontstr);
2611 FcPatternDel(pattern, FC_PIXEL_SIZE);
2612 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2613 usedfontsize = fontsize;
2615 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2616 if(result == FcResultMatch) {
2617 usedfontsize = (int)fontval;
2620 * Default font size is 12, if none given. This is to
2621 * have a known usedfontsize value.
2623 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2628 FcConfigSubstitute(0, pattern, FcMatchPattern);
2629 FcDefaultSubstitute(pattern);
2631 if(xloadfont(&dc.font, pattern))
2632 die("st: can't open font %s\n", fontstr);
2634 /* Setting character width and height. */
2635 xw.cw = dc.font.width;
2636 xw.ch = dc.font.height;
2638 FcPatternDel(pattern, FC_SLANT);
2639 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2640 if(xloadfont(&dc.ifont, pattern))
2641 die("st: can't open font %s\n", fontstr);
2643 FcPatternDel(pattern, FC_WEIGHT);
2644 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2645 if(xloadfont(&dc.ibfont, pattern))
2646 die("st: can't open font %s\n", fontstr);
2648 FcPatternDel(pattern, FC_SLANT);
2649 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
2650 if(xloadfont(&dc.bfont, pattern))
2651 die("st: can't open font %s\n", fontstr);
2653 FcPatternDestroy(pattern);
2657 xunloadfonts(void) {
2661 * Free the loaded fonts in the font cache. This is done backwards
2664 for(i = 0, ip = frccur; i < frclen; i++, ip--) {
2667 XftFontClose(xw.dpy, frc[ip].font);
2672 XftFontClose(xw.dpy, dc.font.match);
2673 FcPatternDestroy(dc.font.pattern);
2674 FcFontSetDestroy(dc.font.set);
2675 XftFontClose(xw.dpy, dc.bfont.match);
2676 FcPatternDestroy(dc.bfont.pattern);
2677 FcFontSetDestroy(dc.bfont.set);
2678 XftFontClose(xw.dpy, dc.ifont.match);
2679 FcPatternDestroy(dc.ifont.pattern);
2680 FcFontSetDestroy(dc.ifont.set);
2681 XftFontClose(xw.dpy, dc.ibfont.match);
2682 FcPatternDestroy(dc.ibfont.pattern);
2683 FcFontSetDestroy(dc.ibfont.set);
2687 xzoom(const Arg *arg) {
2689 xloadfonts(usedfont, usedfontsize + arg->i);
2696 XSetWindowAttributes attrs;
2702 if(!(xw.dpy = XOpenDisplay(NULL)))
2703 die("Can't open display\n");
2704 xw.scr = XDefaultScreen(xw.dpy);
2705 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2709 die("Could not init fontconfig.\n");
2711 usedfont = (opt_font == NULL)? font : opt_font;
2712 xloadfonts(usedfont, 0);
2715 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2718 /* adjust fixed window geometry */
2720 sw = DisplayWidth(xw.dpy, xw.scr);
2721 sh = DisplayHeight(xw.dpy, xw.scr);
2723 xw.fx = sw + xw.fx - xw.fw - 1;
2725 xw.fy = sh + xw.fy - xw.fh - 1;
2730 /* window - default size */
2731 xw.h = 2 * borderpx + term.row * xw.ch;
2732 xw.w = 2 * borderpx + term.col * xw.cw;
2738 attrs.background_pixel = dc.col[defaultbg].pixel;
2739 attrs.border_pixel = dc.col[defaultbg].pixel;
2740 attrs.bit_gravity = NorthWestGravity;
2741 attrs.event_mask = FocusChangeMask | KeyPressMask
2742 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2743 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2744 attrs.colormap = xw.cmap;
2746 parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
2747 XRootWindow(xw.dpy, xw.scr);
2748 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2749 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2751 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2755 memset(&gcvalues, 0, sizeof(gcvalues));
2756 gcvalues.graphics_exposures = False;
2757 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
2759 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2760 DefaultDepth(xw.dpy, xw.scr));
2761 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
2762 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
2764 /* Xft rendering context */
2765 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2768 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2769 XSetLocaleModifiers("@im=local");
2770 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2771 XSetLocaleModifiers("@im=");
2772 if((xw.xim = XOpenIM(xw.dpy,
2773 NULL, NULL, NULL)) == NULL) {
2774 die("XOpenIM failed. Could not open input"
2779 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2780 | XIMStatusNothing, XNClientWindow, xw.win,
2781 XNFocusWindow, xw.win, NULL);
2783 die("XCreateIC failed. Could not obtain input method.\n");
2785 /* white cursor, black outline */
2786 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2787 XDefineCursor(xw.dpy, xw.win, cursor);
2788 XRecolorCursor(xw.dpy, cursor,
2789 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2790 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2792 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2793 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2794 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2797 XMapWindow(xw.dpy, xw.win);
2803 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2804 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2805 width = charlen * xw.cw, xp, i;
2807 int u8fl, u8fblen, u8cblen, doesexist;
2810 Font *font = &dc.font;
2812 FcPattern *fcpattern, *fontpattern;
2813 FcFontSet *fcsets[] = { NULL };
2814 FcCharSet *fccharset;
2815 Colour *fg, *bg, *temp, revfg, revbg;
2816 XRenderColor colfg, colbg;
2819 frcflags = FRC_NORMAL;
2821 if(base.mode & ATTR_ITALIC) {
2822 if(base.fg == defaultfg)
2823 base.fg = defaultitalic;
2825 frcflags = FRC_ITALIC;
2826 } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
2827 if(base.fg == defaultfg)
2828 base.fg = defaultitalic;
2830 frcflags = FRC_ITALICBOLD;
2831 } else if(base.mode & ATTR_UNDERLINE) {
2832 if(base.fg == defaultfg)
2833 base.fg = defaultunderline;
2835 fg = &dc.col[base.fg];
2836 bg = &dc.col[base.bg];
2838 if(base.mode & ATTR_BOLD) {
2839 if(BETWEEN(base.fg, 0, 7)) {
2840 /* basic system colors */
2841 fg = &dc.col[base.fg + 8];
2842 } else if(BETWEEN(base.fg, 16, 195)) {
2844 fg = &dc.col[base.fg + 36];
2845 } else if(BETWEEN(base.fg, 232, 251)) {
2847 fg = &dc.col[base.fg + 4];
2850 * Those ranges will not be brightened:
2851 * 8 - 15 – bright system colors
2852 * 196 - 231 – highest 256 color cube
2853 * 252 - 255 – brightest colors in greyscale
2856 frcflags = FRC_BOLD;
2859 if(IS_SET(MODE_REVERSE)) {
2860 if(fg == &dc.col[defaultfg]) {
2861 fg = &dc.col[defaultbg];
2863 colfg.red = ~fg->color.red;
2864 colfg.green = ~fg->color.green;
2865 colfg.blue = ~fg->color.blue;
2866 colfg.alpha = fg->color.alpha;
2867 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2871 if(bg == &dc.col[defaultbg]) {
2872 bg = &dc.col[defaultfg];
2874 colbg.red = ~bg->color.red;
2875 colbg.green = ~bg->color.green;
2876 colbg.blue = ~bg->color.blue;
2877 colbg.alpha = bg->color.alpha;
2878 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2883 if(base.mode & ATTR_REVERSE) {
2889 if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
2892 /* Intelligent cleaning up of the borders. */
2894 xclear(0, (y == 0)? 0 : winy, borderpx,
2895 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
2897 if(x + charlen >= term.col) {
2898 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2899 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
2902 xclear(winx, 0, winx + width, borderpx);
2904 xclear(winx, winy + xw.ch, winx + width, xw.h);
2906 /* Clean up the region we want to draw to. */
2907 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
2909 /* Set the clip region because Xft is sometimes dirty. */
2914 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
2916 fcsets[0] = font->set;
2917 for(xp = winx; bytelen > 0;) {
2919 * Search for the range in the to be printed string of glyphs
2920 * that are in the main font. Then print that range. If
2921 * some glyph is found that is not in the font, do the
2929 u8cblen = utf8decode(s, &u8char);
2933 doesexist = XftCharIndex(xw.dpy, font->match, u8char);
2934 if(!doesexist || bytelen <= 0) {
2943 XftDrawStringUtf8(xw.draw, fg,
2945 winy + font->ascent,
2948 xp += font->width * u8fl;
2961 /* Search the font cache. */
2962 for(i = 0; i < frclen; i++, frp--) {
2966 if(frc[frp].c == u8char
2967 && frc[frp].flags == frcflags) {
2972 /* Nothing was found. */
2975 * Nothing was found in the cache. Now use
2976 * some dozen of Fontconfig calls to get the
2977 * font for one single character.
2979 fcpattern = FcPatternDuplicate(font->pattern);
2980 fccharset = FcCharSetCreate();
2982 FcCharSetAddChar(fccharset, u8char);
2983 FcPatternAddCharSet(fcpattern, FC_CHARSET,
2985 FcPatternAddBool(fcpattern, FC_SCALABLE,
2988 FcConfigSubstitute(0, fcpattern,
2990 FcDefaultSubstitute(fcpattern);
2992 fontpattern = FcFontSetMatch(0, fcsets,
2993 FcTrue, fcpattern, &fcres);
2996 * Overwrite or create the new cache entry.
3000 if(frccur >= LEN(frc))
3002 if(frclen > LEN(frc)) {
3004 XftFontClose(xw.dpy, frc[frccur].font);
3007 frc[frccur].font = XftFontOpenPattern(xw.dpy,
3009 frc[frccur].c = u8char;
3010 frc[frccur].flags = frcflags;
3012 FcPatternDestroy(fcpattern);
3013 FcCharSetDestroy(fccharset);
3018 XftDrawStringUtf8(xw.draw, fg, frc[frp].font,
3019 xp, winy + frc[frp].font->ascent,
3020 (FcChar8 *)u8c, u8cblen);
3026 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
3027 winy + font->ascent, (FcChar8 *)s, bytelen);
3030 if(base.mode & ATTR_UNDERLINE) {
3031 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
3035 /* Reset clip to none. */
3036 XftDrawSetClip(xw.draw, 0);
3041 static int oldx = 0, oldy = 0;
3043 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
3045 LIMIT(oldx, 0, term.col-1);
3046 LIMIT(oldy, 0, term.row-1);
3048 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
3050 /* remove the old cursor */
3051 sl = utf8size(term.line[oldy][oldx].c);
3052 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
3055 /* draw the new one */
3056 if(!(IS_SET(MODE_HIDE))) {
3057 if(xw.state & WIN_FOCUSED) {
3058 if(IS_SET(MODE_REVERSE)) {
3059 g.mode |= ATTR_REVERSE;
3065 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
3067 XftDrawRect(xw.draw, &dc.col[defaultcs],
3068 borderpx + term.c.x * xw.cw,
3069 borderpx + term.c.y * xw.ch,
3071 XftDrawRect(xw.draw, &dc.col[defaultcs],
3072 borderpx + term.c.x * xw.cw,
3073 borderpx + term.c.y * xw.ch,
3075 XftDrawRect(xw.draw, &dc.col[defaultcs],
3076 borderpx + (term.c.x + 1) * xw.cw - 1,
3077 borderpx + term.c.y * xw.ch,
3079 XftDrawRect(xw.draw, &dc.col[defaultcs],
3080 borderpx + term.c.x * xw.cw,
3081 borderpx + (term.c.y + 1) * xw.ch - 1,
3084 oldx = term.c.x, oldy = term.c.y;
3090 xsettitle(char *p) {
3093 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3095 XSetWMName(xw.dpy, xw.win, &prop);
3100 xsettitle(opt_title ? opt_title : "st");
3104 redraw(int timeout) {
3105 struct timespec tv = {0, timeout * 1000};
3111 nanosleep(&tv, NULL);
3112 XSync(xw.dpy, False); /* necessary for a good tput flash */
3118 drawregion(0, 0, term.col, term.row);
3119 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3121 XSetForeground(xw.dpy, dc.gc,
3122 dc.col[IS_SET(MODE_REVERSE)?
3123 defaultfg : defaultbg].pixel);
3127 drawregion(int x1, int y1, int x2, int y2) {
3128 int ic, ib, x, y, ox, sl;
3130 char buf[DRAW_BUF_SIZ];
3131 bool ena_sel = sel.bx != -1;
3133 if(sel.alt ^ IS_SET(MODE_ALTSCREEN))
3136 if(!(xw.state & WIN_VISIBLE))
3139 for(y = y1; y < y2; y++) {
3143 xtermclear(0, y, term.col, y);
3145 base = term.line[y][0];
3147 for(x = x1; x < x2; x++) {
3148 new = term.line[y][x];
3149 if(ena_sel && selected(x, y))
3150 new.mode ^= ATTR_REVERSE;
3151 if(ib > 0 && (ATTRCMP(base, new)
3152 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
3153 xdraws(buf, base, ox, y, ic, ib);
3161 sl = utf8size(new.c);
3162 memcpy(buf+ib, new.c, sl);
3167 xdraws(buf, base, ox, y, ic, ib);
3173 expose(XEvent *ev) {
3174 XExposeEvent *e = &ev->xexpose;
3176 if(xw.state & WIN_REDRAW) {
3178 xw.state &= ~WIN_REDRAW;
3184 visibility(XEvent *ev) {
3185 XVisibilityEvent *e = &ev->xvisibility;
3187 if(e->state == VisibilityFullyObscured) {
3188 xw.state &= ~WIN_VISIBLE;
3189 } else if(!(xw.state & WIN_VISIBLE)) {
3190 /* need a full redraw for next Expose, not just a buf copy */
3191 xw.state |= WIN_VISIBLE | WIN_REDRAW;
3197 xw.state &= ~WIN_VISIBLE;
3201 xseturgency(int add) {
3202 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3204 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
3205 XSetWMHints(xw.dpy, xw.win, h);
3211 XFocusChangeEvent *e = &ev->xfocus;
3213 if(e->mode == NotifyGrab)
3216 if(ev->type == FocusIn) {
3217 XSetICFocus(xw.xic);
3218 xw.state |= WIN_FOCUSED;
3221 XUnsetICFocus(xw.xic);
3222 xw.state &= ~WIN_FOCUSED;
3227 match(uint mask, uint state) {
3228 state &= ~(ignoremod);
3230 if(mask == XK_NO_MOD && state)
3232 if(mask != XK_ANY_MOD && mask != XK_NO_MOD && !state)
3234 if((state & mask) != state)
3240 numlock(const Arg *dummy) {
3245 kmap(KeySym k, uint state) {
3250 /* Check for mapped keys out of X11 function keys. */
3251 for(i = 0; i < LEN(mappedkeys); i++) {
3252 if(mappedkeys[i] == k)
3255 if(i == LEN(mappedkeys)) {
3256 if((k & 0xFFFF) < 0xFD00)
3260 for(kp = key; kp < key + LEN(key); kp++) {
3266 if(!match(mask, state))
3269 if(kp->appkey > 0) {
3270 if(!IS_SET(MODE_APPKEYPAD))
3272 if(term.numlock && kp->appkey == 2)
3274 } else if(kp->appkey < 0 && IS_SET(MODE_APPKEYPAD)) {
3278 if((kp->appcursor < 0 && IS_SET(MODE_APPCURSOR)) ||
3280 && !IS_SET(MODE_APPCURSOR))) {
3284 if((kp->crlf < 0 && IS_SET(MODE_CRLF)) ||
3285 (kp->crlf > 0 && !IS_SET(MODE_CRLF))) {
3296 kpress(XEvent *ev) {
3297 XKeyEvent *e = &ev->xkey;
3299 char xstr[31], buf[32], *customkey, *cp = buf;
3305 if(IS_SET(MODE_KBDLOCK))
3308 len = XmbLookupString(xw.xic, e, xstr, sizeof(xstr), &ksym, &status);
3309 e->state &= ~Mod2Mask;
3311 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3312 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3313 bp->func(&(bp->arg));
3318 /* 2. custom keys from config.h */
3319 if((customkey = kmap(ksym, e->state))) {
3320 len = strlen(customkey);
3321 memcpy(buf, customkey, len);
3322 /* 3. hardcoded (overrides X lookup) */
3327 if(len == 1 && e->state & Mod1Mask) {
3328 if(IS_SET(MODE_8BIT)) {
3331 ret = utf8encode(&c, cp);
3340 memcpy(cp, xstr, len);
3341 len = cp - buf + len;
3345 if(IS_SET(MODE_ECHO))
3351 cmessage(XEvent *e) {
3354 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3356 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3357 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3358 xw.state |= WIN_FOCUSED;
3360 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3361 xw.state &= ~WIN_FOCUSED;
3363 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3364 /* Send SIGHUP to shell */
3371 cresize(int width, int height) {
3379 col = (xw.w - 2 * borderpx) / xw.cw;
3380 row = (xw.h - 2 * borderpx) / xw.ch;
3389 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3392 cresize(e->xconfigure.width, e->xconfigure.height);
3399 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
3400 struct timeval drawtimeout, *tv = NULL, now, last, lastblink;
3402 gettimeofday(&lastblink, NULL);
3403 gettimeofday(&last, NULL);
3405 for(xev = actionfps;;) {
3407 FD_SET(cmdfd, &rfd);
3410 switch(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
3414 die("select failed: %s\n", SERRNO);
3416 if(FD_ISSET(cmdfd, &rfd)) {
3419 blinkset = tattrset(ATTR_BLINK);
3420 if(!blinkset && term.mode & ATTR_BLINK)
3421 term.mode &= ~(MODE_BLINK);
3425 if(FD_ISSET(xfd, &rfd))
3429 gettimeofday(&now, NULL);
3430 drawtimeout.tv_sec = 0;
3431 drawtimeout.tv_usec = (1000/xfps) * 1000;
3435 if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
3436 tsetdirtattr(ATTR_BLINK);
3437 term.mode ^= MODE_BLINK;
3438 gettimeofday(&lastblink, NULL);
3441 if(TIMEDIFF(now, last) \
3442 > (xev? (1000/xfps) : (1000/actionfps))) {
3448 while(XPending(xw.dpy)) {
3449 XNextEvent(xw.dpy, &ev);
3450 if(XFilterEvent(&ev, None))
3452 if(handler[ev.type])
3453 (handler[ev.type])(&ev);
3459 if(xev && !FD_ISSET(xfd, &rfd))
3461 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
3463 drawtimeout.tv_usec = 1000 * \
3475 die("%s " VERSION " (c) 2010-2013 st engineers\n" \
3476 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
3477 " [-t title] [-w windowid] [-e command ...]\n", argv0);
3481 main(int argc, char *argv[]) {
3485 xw.fw = xw.fh = xw.fx = xw.fy = 0;
3490 allowaltscreen = false;
3493 opt_class = EARGF(usage());
3496 /* eat all remaining arguments */
3501 opt_font = EARGF(usage());
3504 bitm = XParseGeometry(EARGF(usage()), &xr, &yr, &wr, &hr);
3509 if(bitm & WidthValue)
3511 if(bitm & HeightValue)
3513 if(bitm & XNegative && xw.fx == 0)
3515 if(bitm & XNegative && xw.fy == 0)
3518 if(xw.fh != 0 && xw.fw != 0)
3522 opt_io = EARGF(usage());
3525 opt_title = EARGF(usage());
3528 opt_embed = EARGF(usage());
3536 setlocale(LC_CTYPE, "");
3537 XSetLocaleModifiers("");
3543 cresize(xw.h, xw.w);