1 /* See LICENSE for licence details. */
2 #define _XOPEN_SOURCE 600
15 #include <sys/ioctl.h>
16 #include <sys/select.h>
19 #include <sys/types.h>
23 #include <X11/Xatom.h>
25 #include <X11/Xutil.h>
26 #include <X11/cursorfont.h>
27 #include <X11/keysym.h>
28 #include <X11/extensions/Xdbe.h>
29 #include <X11/Xft/Xft.h>
30 #include <fontconfig/fontconfig.h>
34 #define Draw XftDraw *
35 #define Colour XftColor
36 #define Colourmap Colormap
40 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
42 #elif defined(__FreeBSD__) || defined(__DragonFly__)
47 "st " VERSION " (c) 2010-2012 st engineers\n" \
48 "usage: st [-v] [-c class] [-f font] [-g geometry] [-o file]" \
49 " [-t title] [-w windowid] [-e command ...]\n"
52 #define XEMBED_FOCUS_IN 4
53 #define XEMBED_FOCUS_OUT 5
56 #define ESC_BUF_SIZ 256
57 #define ESC_ARG_SIZ 16
58 #define STR_BUF_SIZ 256
59 #define STR_ARG_SIZ 16
60 #define DRAW_BUF_SIZ 20*1024
62 #define XK_NO_MOD UINT_MAX
65 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
68 #define CLEANMASK(mask) (mask & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
69 #define SERRNO strerror(errno)
70 #define MIN(a, b) ((a) < (b) ? (a) : (b))
71 #define MAX(a, b) ((a) < (b) ? (b) : (a))
72 #define LEN(a) (sizeof(a) / sizeof(a[0]))
73 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
74 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
75 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
76 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
77 #define IS_SET(flag) (term.mode & (flag))
78 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
80 #define VT102ID "\033[?6c"
82 enum glyph_attribute {
92 enum cursor_movement {
119 MODE_MOUSEMOTION = 64,
130 ESC_STR = 4, /* DSC, OSC, PM, APC */
132 ESC_STR_END = 16, /* a final string was encountered */
133 ESC_TEST = 32, /* Enter in test mode */
144 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
146 typedef unsigned char uchar;
147 typedef unsigned int uint;
148 typedef unsigned long ulong;
149 typedef unsigned short ushort;
152 char c[UTF_SIZ]; /* character code */
153 uchar mode; /* attribute flags */
154 ushort fg; /* foreground */
155 ushort bg; /* background */
156 uchar state; /* state flags */
162 Glyph attr; /* current char attributes */
168 /* CSI Escape sequence structs */
169 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
171 char buf[ESC_BUF_SIZ]; /* raw string */
172 int len; /* raw string length */
174 int arg[ESC_ARG_SIZ];
175 int narg; /* nb of args */
179 /* STR Escape sequence structs */
180 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
182 char type; /* ESC type ... */
183 char buf[STR_BUF_SIZ]; /* raw string */
184 int len; /* raw string length */
185 char *args[STR_ARG_SIZ];
186 int narg; /* nb of args */
189 /* Internal representation of the screen */
191 int row; /* nb row */
192 int col; /* nb col */
193 Line *line; /* screen */
194 Line *alt; /* alternate screen */
195 bool *dirty; /* dirtyness of lines */
196 TCursor c; /* cursor */
197 int top; /* top scroll limit */
198 int bot; /* bottom scroll limit */
199 int mode; /* terminal mode flags */
200 int esc; /* escape state flags */
204 /* Purely graphic info */
210 Atom xembed, wmdeletewin;
216 bool isfixed; /* is fixed geometry? */
217 int fx, fy, fw, fh; /* fixed geometry */
218 int tw, th; /* tty width and height */
219 int w; /* window width */
220 int h; /* window height */
221 int ch; /* char height */
222 int cw; /* char width */
223 char state; /* focus, redraw, visible */
232 /* TODO: use better name for vars... */
243 struct timeval tclick1;
244 struct timeval tclick2;
257 void (*func)(const Arg *);
261 /* function definitions used in config.h */
262 static void xzoom(const Arg *);
264 /* Config.h for applying patches and the configuration. */
278 /* Drawing Context */
280 Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
281 Font font, bfont, ifont, ibfont;
284 static void die(const char *, ...);
285 static void draw(void);
286 static void redraw(void);
287 static void drawregion(int, int, int, int);
288 static void execsh(void);
289 static void sigchld(int);
290 static void run(void);
292 static void csidump(void);
293 static void csihandle(void);
294 static void csiparse(void);
295 static void csireset(void);
296 static void strdump(void);
297 static void strhandle(void);
298 static void strparse(void);
299 static void strreset(void);
301 static void tclearregion(int, int, int, int);
302 static void tcursor(int);
303 static void tdeletechar(int);
304 static void tdeleteline(int);
305 static void tinsertblank(int);
306 static void tinsertblankline(int);
307 static void tmoveto(int, int);
308 static void tmoveato(int x, int y);
309 static void tnew(int, int);
310 static void tnewline(int);
311 static void tputtab(bool);
312 static void tputc(char *, int);
313 static void treset(void);
314 static int tresize(int, int);
315 static void tscrollup(int, int);
316 static void tscrolldown(int, int);
317 static void tsetattr(int*, int);
318 static void tsetchar(char *, Glyph *, int, int);
319 static void tsetscroll(int, int);
320 static void tswapscreen(void);
321 static void tsetdirt(int, int);
322 static void tsetmode(bool, bool, int *, int);
323 static void tfulldirt(void);
324 static void techo(char *, int);
326 static void ttynew(void);
327 static void ttyread(void);
328 static void ttyresize(void);
329 static void ttywrite(const char *, size_t);
331 static void xdraws(char *, Glyph, int, int, int, int);
332 static void xhints(void);
333 static void xclear(int, int, int, int);
334 static void xdrawcursor(void);
335 static void xinit(void);
336 static void xloadcols(void);
337 static void xresettitle(void);
338 static void xseturgency(int);
339 static void xsetsel(char*);
340 static void xtermclear(int, int, int, int);
341 static void xresize(int, int);
343 static void expose(XEvent *);
344 static void visibility(XEvent *);
345 static void unmap(XEvent *);
346 static char *kmap(KeySym, uint);
347 static void kpress(XEvent *);
348 static void cmessage(XEvent *);
349 static void cresize(int width, int height);
350 static void resize(XEvent *);
351 static void focus(XEvent *);
352 static void brelease(XEvent *);
353 static void bpress(XEvent *);
354 static void bmotion(XEvent *);
355 static void selnotify(XEvent *);
356 static void selclear(XEvent *);
357 static void selrequest(XEvent *);
359 static void selinit(void);
360 static inline bool selected(int, int);
361 static void selcopy(void);
362 static void selpaste(void);
363 static void selscroll(int, int);
365 static int utf8decode(char *, long *);
366 static int utf8encode(long *, char *);
367 static int utf8size(char *);
368 static int isfullutf8(char *, int);
370 static ssize_t xwrite(int, char *, size_t);
371 static void *xmalloc(size_t);
372 static void *xrealloc(void *, size_t);
373 static void *xcalloc(size_t nmemb, size_t size);
375 static void (*handler[LASTEvent])(XEvent *) = {
377 [ClientMessage] = cmessage,
378 [ConfigureNotify] = resize,
379 [VisibilityNotify] = visibility,
380 [UnmapNotify] = unmap,
384 [MotionNotify] = bmotion,
385 [ButtonPress] = bpress,
386 [ButtonRelease] = brelease,
387 [SelectionClear] = selclear,
388 [SelectionNotify] = selnotify,
389 [SelectionRequest] = selrequest,
396 static CSIEscape csiescseq;
397 static STREscape strescseq;
400 static Selection sel;
401 static int iofd = -1;
402 static char **opt_cmd = NULL;
403 static char *opt_io = NULL;
404 static char *opt_title = NULL;
405 static char *opt_embed = NULL;
406 static char *opt_class = NULL;
407 static char *opt_font = NULL;
409 static char *usedfont = NULL;
410 static int usedfontsize = 0;
413 xwrite(int fd, char *s, size_t len) {
417 ssize_t r = write(fd, s, len);
427 xmalloc(size_t len) {
428 void *p = malloc(len);
431 die("Out of memory\n");
437 xrealloc(void *p, size_t len) {
438 if((p = realloc(p, len)) == NULL)
439 die("Out of memory\n");
445 xcalloc(size_t nmemb, size_t size) {
446 void *p = calloc(nmemb, size);
449 die("Out of memory\n");
455 utf8decode(char *s, long *u) {
461 if(~c & B7) { /* 0xxxxxxx */
464 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
465 *u = c&(B4|B3|B2|B1|B0);
467 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
468 *u = c&(B3|B2|B1|B0);
470 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
477 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
479 if((c & (B7|B6)) != B7) /* 10xxxxxx */
482 *u |= c & (B5|B4|B3|B2|B1|B0);
485 if((n == 1 && *u < 0x80) ||
486 (n == 2 && *u < 0x800) ||
487 (n == 3 && *u < 0x10000) ||
488 (*u >= 0xD800 && *u <= 0xDFFF)) {
500 utf8encode(long *u, char *s) {
508 *sp = uc; /* 0xxxxxxx */
510 } else if(*u < 0x800) {
511 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
513 } else if(uc < 0x10000) {
514 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
516 } else if(uc <= 0x10FFFF) {
517 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
523 for(i=n,++sp; i>0; --i,++sp)
524 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
536 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
537 UTF-8 otherwise return 0 */
539 isfullutf8(char *s, int b) {
547 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
549 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
551 ((b == 2) && (*c2&(B7|B6)) == B7))) {
553 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
555 ((b == 2) && (*c2&(B7|B6)) == B7) ||
556 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
569 } else if((c&(B7|B6|B5)) == (B7|B6)) {
571 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
580 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
581 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
585 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
586 if(sel.xtarget == None)
587 sel.xtarget = XA_STRING;
595 return LIMIT(x, 0, term.col-1);
603 return LIMIT(y, 0, term.row-1);
607 selected(int x, int y) {
610 if(sel.ey == y && sel.by == y) {
611 bx = MIN(sel.bx, sel.ex);
612 ex = MAX(sel.bx, sel.ex);
613 return BETWEEN(x, bx, ex);
616 return ((sel.b.y < y && y < sel.e.y)
617 || (y == sel.e.y && x <= sel.e.x))
618 || (y == sel.b.y && x >= sel.b.x
619 && (x <= sel.e.x || sel.b.y != sel.e.y));
623 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
625 *b = e->xbutton.button;
627 *x = x2col(e->xbutton.x);
628 *y = y2row(e->xbutton.y);
630 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
631 sel.b.y = MIN(sel.by, sel.ey);
632 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
633 sel.e.y = MAX(sel.by, sel.ey);
637 mousereport(XEvent *e) {
638 int x = x2col(e->xbutton.x);
639 int y = y2row(e->xbutton.y);
640 int button = e->xbutton.button;
641 int state = e->xbutton.state;
642 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
643 static int ob, ox, oy;
646 if(e->xbutton.type == MotionNotify) {
647 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
651 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
657 if(e->xbutton.type == ButtonPress) {
663 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
664 + (state & Mod4Mask ? 8 : 0)
665 + (state & ControlMask ? 16 : 0);
667 ttywrite(buf, sizeof(buf));
672 if(IS_SET(MODE_MOUSE)) {
674 } else if(e->xbutton.button == Button1) {
677 tsetdirt(sel.b.y, sel.e.y);
681 sel.ex = sel.bx = x2col(e->xbutton.x);
682 sel.ey = sel.by = y2row(e->xbutton.y);
683 } else if(e->xbutton.button == Button4) {
685 } else if(e->xbutton.button == Button5) {
693 int x, y, bufsize, is_selected = 0, size;
699 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
700 ptr = str = xmalloc(bufsize);
702 /* append every set & selected glyph to the selection */
703 for(y = 0; y < term.row; y++) {
704 gp = &term.line[y][0];
705 last = gp + term.col;
707 while(--last >= gp && !(last->state & GLYPH_SET))
710 for(x = 0; gp <= last; x++, ++gp) {
711 if(!(is_selected = selected(x, y)))
714 p = (gp->state & GLYPH_SET) ? gp->c : " ";
716 memcpy(ptr, p, size);
719 /* \n at the end of every selected line except for the last one */
720 if(is_selected && y < sel.e.y)
725 sel.alt = IS_SET(MODE_ALTSCREEN);
730 selnotify(XEvent *e) {
731 ulong nitems, ofs, rem;
738 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
739 False, AnyPropertyType, &type, &format,
740 &nitems, &rem, &data)) {
741 fprintf(stderr, "Clipboard allocation failed\n");
744 ttywrite((const char *) data, nitems * format / 8);
746 /* number of 32-bit chunks returned */
747 ofs += nitems * format / 32;
753 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
754 xw.win, CurrentTime);
757 void selclear(XEvent *e) {
761 tsetdirt(sel.b.y, sel.e.y);
765 selrequest(XEvent *e) {
766 XSelectionRequestEvent *xsre;
768 Atom xa_targets, string;
770 xsre = (XSelectionRequestEvent *) e;
771 xev.type = SelectionNotify;
772 xev.requestor = xsre->requestor;
773 xev.selection = xsre->selection;
774 xev.target = xsre->target;
775 xev.time = xsre->time;
779 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
780 if(xsre->target == xa_targets) {
781 /* respond with the supported type */
782 string = sel.xtarget;
783 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
784 XA_ATOM, 32, PropModeReplace,
785 (uchar *) &string, 1);
786 xev.property = xsre->property;
787 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
788 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
789 xsre->target, 8, PropModeReplace,
790 (uchar *) sel.clip, strlen(sel.clip));
791 xev.property = xsre->property;
794 /* all done, send a notification to the listener */
795 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
796 fprintf(stderr, "Error sending SelectionNotify event\n");
801 /* register the selection for both the clipboard and the primary */
807 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
809 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
810 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
814 brelease(XEvent *e) {
817 if(IS_SET(MODE_MOUSE)) {
822 if(e->xbutton.button == Button2) {
824 } else if(e->xbutton.button == Button1) {
826 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
827 term.dirty[sel.ey] = 1;
828 if(sel.bx == sel.ex && sel.by == sel.ey) {
830 gettimeofday(&now, NULL);
832 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
833 /* triple click on the line */
834 sel.b.x = sel.bx = 0;
835 sel.e.x = sel.ex = term.col;
836 sel.b.y = sel.e.y = sel.ey;
838 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
839 /* double click to select word */
841 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
842 term.line[sel.ey][sel.bx-1].c[0] != ' ') {
846 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
847 term.line[sel.ey][sel.ex+1].c[0] != ' ') {
851 sel.b.y = sel.e.y = sel.ey;
859 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
860 gettimeofday(&sel.tclick1, NULL);
865 int starty, endy, oldey, oldex;
867 if(IS_SET(MODE_MOUSE)) {
875 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
877 if(oldey != sel.ey || oldex != sel.ex) {
878 starty = MIN(oldey, sel.ey);
879 endy = MAX(oldey, sel.ey);
880 tsetdirt(starty, endy);
886 die(const char *errstr, ...) {
889 va_start(ap, errstr);
890 vfprintf(stderr, errstr, ap);
898 char *envshell = getenv("SHELL");
899 const struct passwd *pass = getpwuid(getuid());
900 char buf[sizeof(long) * 8 + 1];
907 setenv("LOGNAME", pass->pw_name, 1);
908 setenv("USER", pass->pw_name, 1);
909 setenv("SHELL", pass->pw_shell, 0);
910 setenv("HOME", pass->pw_dir, 0);
913 snprintf(buf, sizeof(buf), "%lu", xw.win);
914 setenv("WINDOWID", buf, 1);
916 signal(SIGCHLD, SIG_DFL);
917 signal(SIGHUP, SIG_DFL);
918 signal(SIGINT, SIG_DFL);
919 signal(SIGQUIT, SIG_DFL);
920 signal(SIGTERM, SIG_DFL);
921 signal(SIGALRM, SIG_DFL);
923 DEFAULT(envshell, shell);
924 setenv("TERM", termname, 1);
925 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
926 execvp(args[0], args);
934 if(waitpid(pid, &stat, 0) < 0)
935 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
937 if(WIFEXITED(stat)) {
938 exit(WEXITSTATUS(stat));
947 struct winsize w = {term.row, term.col, 0, 0};
949 /* seems to work fine on linux, openbsd and freebsd */
950 if(openpty(&m, &s, NULL, NULL, &w) < 0)
951 die("openpty failed: %s\n", SERRNO);
953 switch(pid = fork()) {
955 die("fork failed\n");
958 setsid(); /* create a new process group */
959 dup2(s, STDIN_FILENO);
960 dup2(s, STDOUT_FILENO);
961 dup2(s, STDERR_FILENO);
962 if(ioctl(s, TIOCSCTTY, NULL) < 0)
963 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
971 signal(SIGCHLD, sigchld);
973 iofd = (!strcmp(opt_io, "-")) ?
975 open(opt_io, O_WRONLY | O_CREAT, 0666);
977 fprintf(stderr, "Error opening %s:%s\n",
978 opt_io, strerror(errno));
988 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
990 fprintf(stderr, "\n");
995 static char buf[BUFSIZ];
996 static int buflen = 0;
999 int charsize; /* size of utf8 char in bytes */
1003 /* append read bytes to unprocessed bytes */
1004 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1005 die("Couldn't read from shell: %s\n", SERRNO);
1007 /* process every complete utf8 char */
1010 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1011 charsize = utf8decode(ptr, &utf8c);
1012 utf8encode(&utf8c, s);
1018 /* keep any uncomplete utf8 char for the next call */
1019 memmove(buf, ptr, buflen);
1023 ttywrite(const char *s, size_t n) {
1024 if(write(cmdfd, s, n) == -1)
1025 die("write error on tty: %s\n", SERRNO);
1032 w.ws_row = term.row;
1033 w.ws_col = term.col;
1034 w.ws_xpixel = xw.tw;
1035 w.ws_ypixel = xw.th;
1036 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1037 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1041 tsetdirt(int top, int bot) {
1044 LIMIT(top, 0, term.row-1);
1045 LIMIT(bot, 0, term.row-1);
1047 for(i = top; i <= bot; i++)
1053 tsetdirt(0, term.row-1);
1060 if(mode == CURSOR_SAVE) {
1062 } else if(mode == CURSOR_LOAD) {
1072 term.c = (TCursor){{
1076 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1078 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1079 for(i = tabspaces; i < term.col; i += tabspaces)
1082 term.bot = term.row - 1;
1083 term.mode = MODE_WRAP;
1085 tclearregion(0, 0, term.col-1, term.row-1);
1087 tcursor(CURSOR_SAVE);
1091 tnew(int col, int row) {
1092 /* set screen size */
1095 term.line = xmalloc(term.row * sizeof(Line));
1096 term.alt = xmalloc(term.row * sizeof(Line));
1097 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
1098 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
1100 for(row = 0; row < term.row; row++) {
1101 term.line[row] = xmalloc(term.col * sizeof(Glyph));
1102 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
1103 term.dirty[row] = 0;
1105 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1112 Line *tmp = term.line;
1114 term.line = term.alt;
1116 term.mode ^= MODE_ALTSCREEN;
1121 tscrolldown(int orig, int n) {
1125 LIMIT(n, 0, term.bot-orig+1);
1127 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1129 for(i = term.bot; i >= orig+n; i--) {
1130 temp = term.line[i];
1131 term.line[i] = term.line[i-n];
1132 term.line[i-n] = temp;
1135 term.dirty[i-n] = 1;
1142 tscrollup(int orig, int n) {
1145 LIMIT(n, 0, term.bot-orig+1);
1147 tclearregion(0, orig, term.col-1, orig+n-1);
1149 for(i = orig; i <= term.bot-n; i++) {
1150 temp = term.line[i];
1151 term.line[i] = term.line[i+n];
1152 term.line[i+n] = temp;
1155 term.dirty[i+n] = 1;
1158 selscroll(orig, -n);
1162 selscroll(int orig, int n) {
1166 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1167 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1171 if(sel.by < term.top) {
1175 if(sel.ey > term.bot) {
1179 sel.b.y = sel.by, sel.b.x = sel.bx;
1180 sel.e.y = sel.ey, sel.e.x = sel.ex;
1185 tnewline(int first_col) {
1189 tscrollup(term.top, 1);
1193 tmoveto(first_col ? 0 : term.c.x, y);
1198 /* int noarg = 1; */
1199 char *p = csiescseq.buf;
1203 csiescseq.priv = 1, p++;
1205 while(p < csiescseq.buf+csiescseq.len) {
1206 while(isdigit(*p)) {
1207 csiescseq.arg[csiescseq.narg] *= 10;
1208 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1210 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ) {
1211 csiescseq.narg++, p++;
1213 csiescseq.mode = *p;
1221 /* for absolute user moves, when decom is set */
1223 tmoveato(int x, int y) {
1224 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1228 tmoveto(int x, int y) {
1231 if(term.c.state & CURSOR_ORIGIN) {
1236 maxy = term.row - 1;
1238 LIMIT(x, 0, term.col-1);
1239 LIMIT(y, miny, maxy);
1240 term.c.state &= ~CURSOR_WRAPNEXT;
1246 tsetchar(char *c, Glyph *attr, int x, int y) {
1247 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1248 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1249 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1250 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1251 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1252 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1253 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1254 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1255 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1259 * The table is proudly stolen from rxvt.
1261 if(attr->mode & ATTR_GFX) {
1262 if(c[0] >= 0x41 && c[0] <= 0x7e
1263 && vt100_0[c[0] - 0x41]) {
1264 c = vt100_0[c[0] - 0x41];
1269 term.line[y][x] = *attr;
1270 memcpy(term.line[y][x].c, c, UTF_SIZ);
1271 term.line[y][x].state |= GLYPH_SET;
1275 tclearregion(int x1, int y1, int x2, int y2) {
1279 temp = x1, x1 = x2, x2 = temp;
1281 temp = y1, y1 = y2, y2 = temp;
1283 LIMIT(x1, 0, term.col-1);
1284 LIMIT(x2, 0, term.col-1);
1285 LIMIT(y1, 0, term.row-1);
1286 LIMIT(y2, 0, term.row-1);
1288 for(y = y1; y <= y2; y++) {
1290 for(x = x1; x <= x2; x++)
1291 term.line[y][x].state = 0;
1296 tdeletechar(int n) {
1297 int src = term.c.x + n;
1299 int size = term.col - src;
1301 term.dirty[term.c.y] = 1;
1303 if(src >= term.col) {
1304 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1308 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1309 size * sizeof(Glyph));
1310 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1314 tinsertblank(int n) {
1317 int size = term.col - dst;
1319 term.dirty[term.c.y] = 1;
1321 if(dst >= term.col) {
1322 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1326 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1327 size * sizeof(Glyph));
1328 tclearregion(src, term.c.y, dst - 1, term.c.y);
1332 tinsertblankline(int n) {
1333 if(term.c.y < term.top || term.c.y > term.bot)
1336 tscrolldown(term.c.y, n);
1340 tdeleteline(int n) {
1341 if(term.c.y < term.top || term.c.y > term.bot)
1344 tscrollup(term.c.y, n);
1348 tsetattr(int *attr, int l) {
1351 for(i = 0; i < l; i++) {
1354 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1355 | ATTR_ITALIC | ATTR_BLINK);
1356 term.c.attr.fg = defaultfg;
1357 term.c.attr.bg = defaultbg;
1360 term.c.attr.mode |= ATTR_BOLD;
1362 case 3: /* enter standout (highlight) */
1363 term.c.attr.mode |= ATTR_ITALIC;
1366 term.c.attr.mode |= ATTR_UNDERLINE;
1369 term.c.attr.mode |= ATTR_BLINK;
1372 term.c.attr.mode |= ATTR_REVERSE;
1376 term.c.attr.mode &= ~ATTR_BOLD;
1378 case 23: /* leave standout (highlight) mode */
1379 term.c.attr.mode &= ~ATTR_ITALIC;
1382 term.c.attr.mode &= ~ATTR_UNDERLINE;
1385 term.c.attr.mode &= ~ATTR_BLINK;
1388 term.c.attr.mode &= ~ATTR_REVERSE;
1391 if(i + 2 < l && attr[i + 1] == 5) {
1393 if(BETWEEN(attr[i], 0, 255)) {
1394 term.c.attr.fg = attr[i];
1397 "erresc: bad fgcolor %d\n",
1402 "erresc(38): gfx attr %d unknown\n",
1407 term.c.attr.fg = defaultfg;
1410 if(i + 2 < l && attr[i + 1] == 5) {
1412 if(BETWEEN(attr[i], 0, 255)) {
1413 term.c.attr.bg = attr[i];
1416 "erresc: bad bgcolor %d\n",
1421 "erresc(48): gfx attr %d unknown\n",
1426 term.c.attr.bg = defaultbg;
1429 if(BETWEEN(attr[i], 30, 37)) {
1430 term.c.attr.fg = attr[i] - 30;
1431 } else if(BETWEEN(attr[i], 40, 47)) {
1432 term.c.attr.bg = attr[i] - 40;
1433 } else if(BETWEEN(attr[i], 90, 97)) {
1434 term.c.attr.fg = attr[i] - 90 + 8;
1435 } else if(BETWEEN(attr[i], 100, 107)) {
1436 term.c.attr.bg = attr[i] - 100 + 8;
1439 "erresc(default): gfx attr %d unknown\n",
1440 attr[i]), csidump();
1448 tsetscroll(int t, int b) {
1451 LIMIT(t, 0, term.row-1);
1452 LIMIT(b, 0, term.row-1);
1462 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1465 tsetmode(bool priv, bool set, int *args, int narg) {
1469 for(lim = args + narg; args < lim; ++args) {
1473 case 1: /* DECCKM -- Cursor key */
1474 MODBIT(term.mode, set, MODE_APPKEYPAD);
1476 case 5: /* DECSCNM -- Reverse video */
1478 MODBIT(term.mode, set, MODE_REVERSE);
1479 if(mode != term.mode)
1482 case 6: /* DECOM -- Origin */
1483 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1486 case 7: /* DECAWM -- Auto wrap */
1487 MODBIT(term.mode, set, MODE_WRAP);
1489 case 0: /* Error (IGNORED) */
1490 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1491 case 3: /* DECCOLM -- Column (IGNORED) */
1492 case 4: /* DECSCLM -- Scroll (IGNORED) */
1493 case 8: /* DECARM -- Auto repeat (IGNORED) */
1494 case 18: /* DECPFF -- Printer feed (IGNORED) */
1495 case 19: /* DECPEX -- Printer extent (IGNORED) */
1496 case 42: /* DECNRCM -- National characters (IGNORED) */
1497 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1499 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1500 MODBIT(term.mode, !set, MODE_HIDE);
1502 case 1000: /* 1000,1002: enable xterm mouse report */
1503 MODBIT(term.mode, set, MODE_MOUSEBTN);
1506 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1508 case 1049: /* = 1047 and 1048 */
1511 alt = IS_SET(MODE_ALTSCREEN) != 0;
1513 tclearregion(0, 0, term.col-1, term.row-1);
1514 if(set ^ alt) /* set is always 1 or 0 */
1521 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1525 "erresc: unknown private set/reset mode %d\n",
1531 case 0: /* Error (IGNORED) */
1533 case 2: /* KAM -- keyboard action */
1534 MODBIT(term.mode, set, MODE_KBDLOCK);
1536 case 4: /* IRM -- Insertion-replacement */
1537 MODBIT(term.mode, set, MODE_INSERT);
1539 case 12: /* SRM -- Send/Receive */
1540 MODBIT(term.mode, !set, MODE_ECHO);
1542 case 20: /* LNM -- Linefeed/new line */
1543 MODBIT(term.mode, set, MODE_CRLF);
1547 "erresc: unknown set/reset mode %d\n",
1559 switch(csiescseq.mode) {
1562 fprintf(stderr, "erresc: unknown csi ");
1566 case '@': /* ICH -- Insert <n> blank char */
1567 DEFAULT(csiescseq.arg[0], 1);
1568 tinsertblank(csiescseq.arg[0]);
1570 case 'A': /* CUU -- Cursor <n> Up */
1571 DEFAULT(csiescseq.arg[0], 1);
1572 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1574 case 'B': /* CUD -- Cursor <n> Down */
1575 case 'e': /* VPR --Cursor <n> Down */
1576 DEFAULT(csiescseq.arg[0], 1);
1577 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1579 case 'c': /* DA -- Device Attributes */
1580 if(csiescseq.arg[0] == 0)
1581 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1583 case 'C': /* CUF -- Cursor <n> Forward */
1584 case 'a': /* HPR -- Cursor <n> Forward */
1585 DEFAULT(csiescseq.arg[0], 1);
1586 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1588 case 'D': /* CUB -- Cursor <n> Backward */
1589 DEFAULT(csiescseq.arg[0], 1);
1590 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1592 case 'E': /* CNL -- Cursor <n> Down and first col */
1593 DEFAULT(csiescseq.arg[0], 1);
1594 tmoveto(0, term.c.y+csiescseq.arg[0]);
1596 case 'F': /* CPL -- Cursor <n> Up and first col */
1597 DEFAULT(csiescseq.arg[0], 1);
1598 tmoveto(0, term.c.y-csiescseq.arg[0]);
1600 case 'g': /* TBC -- Tabulation clear */
1601 switch (csiescseq.arg[0]) {
1602 case 0: /* clear current tab stop */
1603 term.tabs[term.c.x] = 0;
1605 case 3: /* clear all the tabs */
1606 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1612 case 'G': /* CHA -- Move to <col> */
1614 DEFAULT(csiescseq.arg[0], 1);
1615 tmoveto(csiescseq.arg[0]-1, term.c.y);
1617 case 'H': /* CUP -- Move to <row> <col> */
1619 DEFAULT(csiescseq.arg[0], 1);
1620 DEFAULT(csiescseq.arg[1], 1);
1621 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1623 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1624 DEFAULT(csiescseq.arg[0], 1);
1625 while(csiescseq.arg[0]--)
1628 case 'J': /* ED -- Clear screen */
1630 switch(csiescseq.arg[0]) {
1632 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1633 if(term.c.y < term.row-1)
1634 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1638 tclearregion(0, 0, term.col-1, term.c.y-1);
1639 tclearregion(0, term.c.y, term.c.x, term.c.y);
1642 tclearregion(0, 0, term.col-1, term.row-1);
1648 case 'K': /* EL -- Clear line */
1649 switch(csiescseq.arg[0]) {
1651 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1654 tclearregion(0, term.c.y, term.c.x, term.c.y);
1657 tclearregion(0, term.c.y, term.col-1, term.c.y);
1661 case 'S': /* SU -- Scroll <n> line up */
1662 DEFAULT(csiescseq.arg[0], 1);
1663 tscrollup(term.top, csiescseq.arg[0]);
1665 case 'T': /* SD -- Scroll <n> line down */
1666 DEFAULT(csiescseq.arg[0], 1);
1667 tscrolldown(term.top, csiescseq.arg[0]);
1669 case 'L': /* IL -- Insert <n> blank lines */
1670 DEFAULT(csiescseq.arg[0], 1);
1671 tinsertblankline(csiescseq.arg[0]);
1673 case 'l': /* RM -- Reset Mode */
1674 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1676 case 'M': /* DL -- Delete <n> lines */
1677 DEFAULT(csiescseq.arg[0], 1);
1678 tdeleteline(csiescseq.arg[0]);
1680 case 'X': /* ECH -- Erase <n> char */
1681 DEFAULT(csiescseq.arg[0], 1);
1682 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1684 case 'P': /* DCH -- Delete <n> char */
1685 DEFAULT(csiescseq.arg[0], 1);
1686 tdeletechar(csiescseq.arg[0]);
1688 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1689 DEFAULT(csiescseq.arg[0], 1);
1690 while(csiescseq.arg[0]--)
1693 case 'd': /* VPA -- Move to <row> */
1694 DEFAULT(csiescseq.arg[0], 1);
1695 tmoveato(term.c.x, csiescseq.arg[0]-1);
1697 case 'h': /* SM -- Set terminal mode */
1698 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1700 case 'm': /* SGR -- Terminal attribute (color) */
1701 tsetattr(csiescseq.arg, csiescseq.narg);
1703 case 'r': /* DECSTBM -- Set Scrolling Region */
1704 if(csiescseq.priv) {
1707 DEFAULT(csiescseq.arg[0], 1);
1708 DEFAULT(csiescseq.arg[1], term.row);
1709 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1713 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1714 tcursor(CURSOR_SAVE);
1716 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1717 tcursor(CURSOR_LOAD);
1728 for(i = 0; i < csiescseq.len; i++) {
1729 c = csiescseq.buf[i] & 0xff;
1732 } else if(c == '\n') {
1734 } else if(c == '\r') {
1736 } else if(c == 0x1b) {
1739 printf("(%02x)", c);
1747 memset(&csiescseq, 0, sizeof(csiescseq));
1755 * TODO: make this being useful in case of color palette change.
1761 switch(strescseq.type) {
1762 case ']': /* OSC -- Operating System Command */
1768 * TODO: Handle special chars in string, like umlauts.
1771 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1775 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1777 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1780 fprintf(stderr, "erresc: unknown str ");
1785 case 'k': /* old title set compatibility */
1786 XStoreName(xw.dpy, xw.win, strescseq.buf);
1788 case 'P': /* DSC -- Device Control String */
1789 case '_': /* APC -- Application Program Command */
1790 case '^': /* PM -- Privacy Message */
1792 fprintf(stderr, "erresc: unknown str ");
1802 * TODO: Implement parsing like for CSI when required.
1803 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1813 printf("ESC%c", strescseq.type);
1814 for(i = 0; i < strescseq.len; i++) {
1815 c = strescseq.buf[i] & 0xff;
1818 } else if(c == '\n') {
1820 } else if(c == '\r') {
1822 } else if(c == 0x1b) {
1825 printf("(%02x)", c);
1833 memset(&strescseq, 0, sizeof(strescseq));
1837 tputtab(bool forward) {
1843 for(++x; x < term.col && !term.tabs[x]; ++x)
1848 for(--x; x > 0 && !term.tabs[x]; --x)
1851 tmoveto(x, term.c.y);
1855 techo(char *buf, int len) {
1856 for(; len > 0; buf++, len--) {
1859 if(c == '\033') { /* escape */
1862 } else if (c < '\x20') { /* control code */
1863 if(c != '\n' && c != '\r' && c != '\t') {
1877 tputc(char *c, int len) {
1879 bool control = ascii < '\x20' || ascii == 0177;
1882 if (xwrite(iofd, c, len) < 0) {
1883 fprintf(stderr, "Error writting in %s:%s\n",
1884 opt_io, strerror(errno));
1890 * STR sequences must be checked before anything else
1891 * because it can use some control codes as part of the sequence.
1893 if(term.esc & ESC_STR) {
1896 term.esc = ESC_START | ESC_STR_END;
1898 case '\a': /* backwards compatibility to xterm */
1903 strescseq.buf[strescseq.len++] = ascii;
1904 if(strescseq.len+1 >= STR_BUF_SIZ) {
1913 * Actions of control codes must be performed as soon they arrive
1914 * because they can be embedded inside a control sequence, and
1915 * they must not cause conflicts with sequences.
1923 tmoveto(term.c.x-1, term.c.y);
1926 tmoveto(0, term.c.y);
1931 /* go to first col if the mode is set */
1932 tnewline(IS_SET(MODE_CRLF));
1934 case '\a': /* BEL */
1935 if(!(xw.state & WIN_FOCUSED))
1938 case '\033': /* ESC */
1940 term.esc = ESC_START;
1942 case '\016': /* SO */
1943 term.c.attr.mode |= ATTR_GFX;
1945 case '\017': /* SI */
1946 term.c.attr.mode &= ~ATTR_GFX;
1948 case '\032': /* SUB */
1949 case '\030': /* CAN */
1952 case '\005': /* ENQ (IGNORED) */
1953 case '\000': /* NUL (IGNORED) */
1954 case '\021': /* XON (IGNORED) */
1955 case '\023': /* XOFF (IGNORED) */
1956 case 0177: /* DEL (IGNORED) */
1959 } else if(term.esc & ESC_START) {
1960 if(term.esc & ESC_CSI) {
1961 csiescseq.buf[csiescseq.len++] = ascii;
1962 if(BETWEEN(ascii, 0x40, 0x7E)
1963 || csiescseq.len >= ESC_BUF_SIZ) {
1965 csiparse(), csihandle();
1967 } else if(term.esc & ESC_STR_END) {
1971 } else if(term.esc & ESC_ALTCHARSET) {
1973 case '0': /* Line drawing set */
1974 term.c.attr.mode |= ATTR_GFX;
1976 case 'B': /* USASCII */
1977 term.c.attr.mode &= ~ATTR_GFX;
1979 case 'A': /* UK (IGNORED) */
1980 case '<': /* multinational charset (IGNORED) */
1981 case '5': /* Finnish (IGNORED) */
1982 case 'C': /* Finnish (IGNORED) */
1983 case 'K': /* German (IGNORED) */
1986 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1989 } else if(term.esc & ESC_TEST) {
1990 if(ascii == '8') { /* DEC screen alignment test. */
1991 char E[UTF_SIZ] = "E";
1994 for(x = 0; x < term.col; ++x) {
1995 for(y = 0; y < term.row; ++y)
1996 tsetchar(E, &term.c.attr, x, y);
2003 term.esc |= ESC_CSI;
2006 term.esc |= ESC_TEST;
2008 case 'P': /* DCS -- Device Control String */
2009 case '_': /* APC -- Application Program Command */
2010 case '^': /* PM -- Privacy Message */
2011 case ']': /* OSC -- Operating System Command */
2012 case 'k': /* old title set compatibility */
2014 strescseq.type = ascii;
2015 term.esc |= ESC_STR;
2017 case '(': /* set primary charset G0 */
2018 term.esc |= ESC_ALTCHARSET;
2020 case ')': /* set secondary charset G1 (IGNORED) */
2021 case '*': /* set tertiary charset G2 (IGNORED) */
2022 case '+': /* set quaternary charset G3 (IGNORED) */
2025 case 'D': /* IND -- Linefeed */
2026 if(term.c.y == term.bot) {
2027 tscrollup(term.top, 1);
2029 tmoveto(term.c.x, term.c.y+1);
2033 case 'E': /* NEL -- Next line */
2034 tnewline(1); /* always go to first col */
2037 case 'H': /* HTS -- Horizontal tab stop */
2038 term.tabs[term.c.x] = 1;
2041 case 'M': /* RI -- Reverse index */
2042 if(term.c.y == term.top) {
2043 tscrolldown(term.top, 1);
2045 tmoveto(term.c.x, term.c.y-1);
2049 case 'Z': /* DECID -- Identify Terminal */
2050 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2053 case 'c': /* RIS -- Reset to inital state */
2058 case '=': /* DECPAM -- Application keypad */
2059 term.mode |= MODE_APPKEYPAD;
2062 case '>': /* DECPNM -- Normal keypad */
2063 term.mode &= ~MODE_APPKEYPAD;
2066 case '7': /* DECSC -- Save Cursor */
2067 tcursor(CURSOR_SAVE);
2070 case '8': /* DECRC -- Restore Cursor */
2071 tcursor(CURSOR_LOAD);
2074 case '\\': /* ST -- Stop */
2078 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2079 (uchar) ascii, isprint(ascii)? ascii:'.');
2084 * All characters which forms part of a sequence are not
2090 * Display control codes only if we are in graphic mode
2092 if(control && !(term.c.attr.mode & ATTR_GFX))
2094 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2096 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
2097 tnewline(1); /* always go to first col */
2098 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2099 if(term.c.x+1 < term.col)
2100 tmoveto(term.c.x+1, term.c.y);
2102 term.c.state |= CURSOR_WRAPNEXT;
2106 tresize(int col, int row) {
2108 int minrow = MIN(row, term.row);
2109 int mincol = MIN(col, term.col);
2110 int slide = term.c.y - row + 1;
2113 if(col < 1 || row < 1)
2116 /* free unneeded rows */
2119 /* slide screen to keep cursor where we expect it -
2120 * tscrollup would work here, but we can optimize to
2121 * memmove because we're freeing the earlier lines */
2122 for(/* i = 0 */; i < slide; i++) {
2126 memmove(term.line, term.line + slide, row * sizeof(Line));
2127 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2129 for(i += row; i < term.row; i++) {
2134 /* resize to new height */
2135 term.line = xrealloc(term.line, row * sizeof(Line));
2136 term.alt = xrealloc(term.alt, row * sizeof(Line));
2137 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2138 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2140 /* resize each row to new width, zero-pad if needed */
2141 for(i = 0; i < minrow; i++) {
2143 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2144 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2145 for(x = mincol; x < col; x++) {
2146 term.line[i][x].state = 0;
2147 term.alt[i][x].state = 0;
2151 /* allocate any new rows */
2152 for(/* i == minrow */; i < row; i++) {
2154 term.line[i] = xcalloc(col, sizeof(Glyph));
2155 term.alt [i] = xcalloc(col, sizeof(Glyph));
2157 if(col > term.col) {
2158 bp = term.tabs + term.col;
2160 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2161 while(--bp > term.tabs && !*bp)
2163 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2166 /* update terminal size */
2169 /* reset scrolling region */
2170 tsetscroll(0, row-1);
2171 /* make use of the LIMIT in tmoveto */
2172 tmoveto(term.c.x, term.c.y);
2178 xresize(int col, int row) {
2179 xw.tw = MAX(1, 2*borderpx + col * xw.cw);
2180 xw.th = MAX(1, 2*borderpx + row * xw.ch);
2182 XftDrawChange(xw.draw, xw.buf);
2188 XRenderColor color = { .alpha = 0 };
2190 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2191 for(i = 0; i < LEN(colorname); i++) {
2194 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2195 die("Could not allocate color '%s'\n", colorname[i]);
2199 /* load colors [16-255] ; same colors as xterm */
2200 for(i = 16, r = 0; r < 6; r++) {
2201 for(g = 0; g < 6; g++) {
2202 for(b = 0; b < 6; b++) {
2203 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
2204 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
2205 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
2206 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
2207 die("Could not allocate color %d\n", i);
2214 for(r = 0; r < 24; r++, i++) {
2215 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
2216 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
2218 die("Could not allocate color %d\n", i);
2224 xtermclear(int col1, int row1, int col2, int row2) {
2225 XftDrawRect(xw.draw,
2226 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2227 borderpx + col1 * xw.cw,
2228 borderpx + row1 * xw.ch,
2229 (col2-col1+1) * xw.cw,
2230 (row2-row1+1) * xw.ch);
2234 * Absolute coordinates.
2237 xclear(int x1, int y1, int x2, int y2) {
2238 XftDrawRect(xw.draw,
2239 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2240 x1, y1, x2-x1, y2-y1);
2245 XClassHint class = {opt_class ? opt_class : termname, termname};
2246 XWMHints wm = {.flags = InputHint, .input = 1};
2247 XSizeHints *sizeh = NULL;
2249 sizeh = XAllocSizeHints();
2250 if(xw.isfixed == False) {
2251 sizeh->flags = PSize | PResizeInc | PBaseSize;
2252 sizeh->height = xw.h;
2253 sizeh->width = xw.w;
2254 sizeh->height_inc = xw.ch;
2255 sizeh->width_inc = xw.cw;
2256 sizeh->base_height = 2*borderpx;
2257 sizeh->base_width = 2*borderpx;
2259 sizeh->flags = PMaxSize | PMinSize;
2260 sizeh->min_width = sizeh->max_width = xw.fw;
2261 sizeh->min_height = sizeh->max_height = xw.fh;
2264 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2269 xloadfont(Font *f, FcPattern *pattern) {
2273 match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
2276 if(!(f->set = XftFontOpenPattern(xw.dpy, match))) {
2277 FcPatternDestroy(match);
2281 f->ascent = f->set->ascent;
2282 f->descent = f->set->descent;
2284 f->rbearing = f->set->max_advance_width;
2286 f->height = f->set->height;
2287 f->width = f->lbearing + f->rbearing;
2293 xloadfonts(char *fontstr, int fontsize) {
2298 if(fontstr[0] == '-') {
2299 pattern = XftXlfdParse(fontstr, False, False);
2301 pattern = FcNameParse((FcChar8 *)fontstr);
2305 die("st: can't open font %s\n", fontstr);
2308 FcPatternDel(pattern, FC_PIXEL_SIZE);
2309 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2310 usedfontsize = fontsize;
2312 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2313 if(result == FcResultMatch) {
2314 usedfontsize = (int)fontval;
2317 * Default font size is 12, if none given. This is to
2318 * have a known usedfontsize value.
2320 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2325 if(xloadfont(&dc.font, pattern))
2326 die("st: can't open font %s\n", fontstr);
2328 /* Setting character width and height. */
2329 xw.cw = dc.font.width;
2330 xw.ch = dc.font.height;
2332 FcPatternDel(pattern, FC_WEIGHT);
2333 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2334 if(xloadfont(&dc.bfont, pattern))
2335 die("st: can't open font %s\n", fontstr);
2337 FcPatternDel(pattern, FC_SLANT);
2338 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2339 if(xloadfont(&dc.ibfont, pattern))
2340 die("st: can't open font %s\n", fontstr);
2342 FcPatternDel(pattern, FC_WEIGHT);
2343 if(xloadfont(&dc.ifont, pattern))
2344 die("st: can't open font %s\n", fontstr);
2346 FcPatternDestroy(pattern);
2350 xzoom(const Arg *arg)
2352 xloadfonts(usedfont, usedfontsize + arg->i);
2359 XSetWindowAttributes attrs;
2362 int sw, sh, major, minor;
2364 if(!(xw.dpy = XOpenDisplay(NULL)))
2365 die("Can't open display\n");
2366 xw.scr = XDefaultScreen(xw.dpy);
2367 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2370 usedfont = (opt_font == NULL)? font : opt_font;
2371 xloadfonts(usedfont, 0);
2374 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2377 /* adjust fixed window geometry */
2379 sw = DisplayWidth(xw.dpy, xw.scr);
2380 sh = DisplayHeight(xw.dpy, xw.scr);
2382 xw.fx = sw + xw.fx - xw.fw - 1;
2384 xw.fy = sh + xw.fy - xw.fh - 1;
2389 /* window - default size */
2390 xw.h = 2*borderpx + term.row * xw.ch;
2391 xw.w = 2*borderpx + term.col * xw.cw;
2396 attrs.background_pixel = dc.col[defaultbg].pixel;
2397 attrs.border_pixel = dc.col[defaultbg].pixel;
2398 attrs.bit_gravity = NorthWestGravity;
2399 attrs.event_mask = FocusChangeMask | KeyPressMask
2400 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2401 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2402 attrs.colormap = xw.cmap;
2404 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
2405 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2406 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2408 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2412 /* double buffering */
2413 if(!XdbeQueryExtension(xw.dpy, &major, &minor))
2414 die("Xdbe extension is not present\n");
2415 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
2417 /* Xft rendering context */
2418 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2421 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
2422 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2423 | XIMStatusNothing, XNClientWindow, xw.win,
2424 XNFocusWindow, xw.win, NULL);
2426 /* white cursor, black outline */
2427 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2428 XDefineCursor(xw.dpy, xw.win, cursor);
2429 XRecolorCursor(xw.dpy, cursor,
2430 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2431 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2433 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2434 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2435 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2438 XMapWindow(xw.dpy, xw.win);
2444 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2445 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2446 width = charlen * xw.cw;
2447 Font *font = &dc.font;
2449 Colour *fg = &dc.col[base.fg], *bg = &dc.col[base.bg],
2450 *temp, revfg, revbg;
2451 XRenderColor colfg, colbg;
2453 if(base.mode & ATTR_BOLD) {
2454 if(BETWEEN(base.fg, 0, 7)) {
2455 /* basic system colors */
2456 fg = &dc.col[base.fg + 8];
2457 } else if(BETWEEN(base.fg, 16, 195)) {
2459 fg = &dc.col[base.fg + 36];
2460 } else if(BETWEEN(base.fg, 232, 251)) {
2462 fg = &dc.col[base.fg + 4];
2465 * Those ranges will not be brightened:
2466 * 8 - 15 – bright system colors
2467 * 196 - 231 – highest 256 color cube
2468 * 252 - 255 – brightest colors in greyscale
2473 if(base.mode & ATTR_ITALIC)
2475 if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
2478 if(IS_SET(MODE_REVERSE)) {
2479 if(fg == &dc.col[defaultfg]) {
2480 fg = &dc.col[defaultbg];
2482 colfg.red = ~fg->color.red;
2483 colfg.green = ~fg->color.green;
2484 colfg.blue = ~fg->color.blue;
2485 colfg.alpha = fg->color.alpha;
2486 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2490 if(bg == &dc.col[defaultbg]) {
2491 bg = &dc.col[defaultfg];
2493 colbg.red = ~bg->color.red;
2494 colbg.green = ~bg->color.green;
2495 colbg.blue = ~bg->color.blue;
2496 colbg.alpha = bg->color.alpha;
2497 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2502 if(base.mode & ATTR_REVERSE)
2503 temp = fg, fg = bg, bg = temp;
2505 XftTextExtentsUtf8(xw.dpy, font->set, (FcChar8 *)s, bytelen,
2507 width = extents.xOff;
2509 /* Intelligent cleaning up of the borders. */
2511 xclear(0, (y == 0)? 0 : winy, borderpx,
2512 winy + xw.ch + (y == term.row-1)? xw.h : 0);
2514 if(x + charlen >= term.col-1) {
2515 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2516 (y == term.row-1)? xw.h : (winy + xw.ch));
2519 xclear(winx, 0, winx + width, borderpx);
2521 xclear(winx, winy + xw.ch, winx + width, xw.h);
2523 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
2524 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
2525 winy + font->ascent, (FcChar8 *)s, bytelen);
2527 if(base.mode & ATTR_UNDERLINE) {
2528 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
2535 static int oldx = 0, oldy = 0;
2537 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs, 0};
2539 LIMIT(oldx, 0, term.col-1);
2540 LIMIT(oldy, 0, term.row-1);
2542 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2543 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2545 /* remove the old cursor */
2546 if(term.line[oldy][oldx].state & GLYPH_SET) {
2547 sl = utf8size(term.line[oldy][oldx].c);
2548 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
2551 xtermclear(oldx, oldy, oldx, oldy);
2554 /* draw the new one */
2555 if(!(IS_SET(MODE_HIDE))) {
2556 if(!(xw.state & WIN_FOCUSED))
2559 if(IS_SET(MODE_REVERSE))
2560 g.mode |= ATTR_REVERSE, g.fg = defaultcs, g.bg = defaultfg;
2563 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2564 oldx = term.c.x, oldy = term.c.y;
2570 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
2575 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2579 XSync(xw.dpy, False); /* necessary for a good tput flash */
2580 nanosleep(&tv, NULL);
2585 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2587 drawregion(0, 0, term.col, term.row);
2588 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2592 drawregion(int x1, int y1, int x2, int y2) {
2593 int ic, ib, x, y, ox, sl;
2595 char buf[DRAW_BUF_SIZ];
2596 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN) != 0;
2598 if((sel.alt != 0) ^ alt)
2600 if(!(xw.state & WIN_VISIBLE))
2603 for(y = y1; y < y2; y++) {
2607 xtermclear(0, y, term.col, y);
2609 base = term.line[y][0];
2611 for(x = x1; x < x2; x++) {
2612 new = term.line[y][x];
2613 if(ena_sel && *(new.c) && selected(x, y))
2614 new.mode ^= ATTR_REVERSE;
2615 if(ib > 0 && (!(new.state & GLYPH_SET)
2616 || ATTRCMP(base, new)
2617 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2618 xdraws(buf, base, ox, y, ic, ib);
2621 if(new.state & GLYPH_SET) {
2626 sl = utf8size(new.c);
2627 memcpy(buf+ib, new.c, sl);
2633 xdraws(buf, base, ox, y, ic, ib);
2639 expose(XEvent *ev) {
2640 XExposeEvent *e = &ev->xexpose;
2642 if(xw.state & WIN_REDRAW) {
2644 xw.state &= ~WIN_REDRAW;
2649 visibility(XEvent *ev) {
2650 XVisibilityEvent *e = &ev->xvisibility;
2652 if(e->state == VisibilityFullyObscured) {
2653 xw.state &= ~WIN_VISIBLE;
2654 } else if(!(xw.state & WIN_VISIBLE)) {
2655 /* need a full redraw for next Expose, not just a buf copy */
2656 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2662 xw.state &= ~WIN_VISIBLE;
2666 xseturgency(int add) {
2667 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2669 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2670 XSetWMHints(xw.dpy, xw.win, h);
2676 if(ev->type == FocusIn) {
2677 XSetICFocus(xw.xic);
2678 xw.state |= WIN_FOCUSED;
2681 XUnsetICFocus(xw.xic);
2682 xw.state &= ~WIN_FOCUSED;
2687 kmap(KeySym k, uint state) {
2692 for(i = 0; i < LEN(key); i++) {
2695 if(key[i].k == k && ((state & mask) == mask
2696 || (mask == XK_NO_MOD && !state))) {
2697 return (char*)key[i].s;
2704 kpress(XEvent *ev) {
2705 XKeyEvent *e = &ev->xkey;
2707 char xstr[31], buf[32], *customkey, *cp = buf;
2708 int len, meta, shift, i;
2711 if (IS_SET(MODE_KBDLOCK))
2714 meta = e->state & Mod1Mask;
2715 shift = e->state & ShiftMask;
2716 len = XmbLookupString(xw.xic, e, xstr, sizeof(xstr), &ksym, &status);
2719 for(i = 0; i < LEN(shortcuts); i++) {
2720 if((ksym == shortcuts[i].keysym)
2721 && (CLEANMASK(shortcuts[i].mod) == \
2722 CLEANMASK(e->state))
2723 && shortcuts[i].func) {
2724 shortcuts[i].func(&(shortcuts[i].arg));
2728 /* 2. custom keys from config.h */
2729 if((customkey = kmap(ksym, e->state))) {
2730 len = strlen(customkey);
2731 memcpy(buf, customkey, len);
2732 /* 2. hardcoded (overrides X lookup) */
2739 /* XXX: shift up/down doesn't work */
2740 sprintf(buf, "\033%c%c",
2741 IS_SET(MODE_APPKEYPAD) ? 'O' : '[',
2742 (shift ? "dacb":"DACB")[ksym - XK_Left]);
2750 memcpy(buf, xstr, len);
2755 *cp++ = '\033', len++;
2757 *cp++ = '\r', len++;
2759 if(IS_SET(MODE_CRLF))
2767 if (len == 1 && meta)
2770 memcpy(cp, xstr, len);
2771 len = cp - buf + len;
2776 if(IS_SET(MODE_ECHO))
2782 cmessage(XEvent *e) {
2784 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2785 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2786 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2787 xw.state |= WIN_FOCUSED;
2789 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2790 xw.state &= ~WIN_FOCUSED;
2792 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
2793 /* Send SIGHUP to shell */
2800 cresize(int width, int height)
2809 col = (xw.w - 2*borderpx) / xw.cw;
2810 row = (xw.h - 2*borderpx) / xw.ch;
2819 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2822 cresize(e->xconfigure.width, e->xconfigure.height);
2829 int xfd = XConnectionNumber(xw.dpy), i;
2830 struct timeval drawtimeout, *tv = NULL;
2834 FD_SET(cmdfd, &rfd);
2836 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
2839 die("select failed: %s\n", SERRNO);
2843 * Stop after a certain number of reads so the user does not
2844 * feel like the system is stuttering.
2846 if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
2850 * Just wait a bit so it isn't disturbing the
2851 * user and the system is able to write something.
2853 drawtimeout.tv_sec = 0;
2854 drawtimeout.tv_usec = 5;
2861 while(XPending(xw.dpy)) {
2862 XNextEvent(xw.dpy, &ev);
2863 if(XFilterEvent(&ev, None))
2865 if(handler[ev.type])
2866 (handler[ev.type])(&ev);
2875 main(int argc, char *argv[]) {
2876 int i, bitm, xr, yr;
2879 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2882 for(i = 1; i < argc; i++) {
2883 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2886 opt_class = argv[i];
2889 /* eat every remaining arguments */
2901 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2906 if(bitm & WidthValue)
2908 if(bitm & HeightValue)
2910 if(bitm & XNegative && xw.fx == 0)
2912 if(bitm & XNegative && xw.fy == 0)
2915 if(xw.fh != 0 && xw.fw != 0)
2924 opt_title = argv[i];
2931 opt_embed = argv[i];
2937 setlocale(LC_CTYPE, "");
2938 XSetLocaleModifiers("");