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>
36 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
38 #elif defined(__FreeBSD__) || defined(__DragonFly__)
43 "st " VERSION " (c) 2010-2012 st engineers\n" \
44 "usage: st [-v] [-c class] [-f font] [-g geometry] [-o file]" \
45 " [-t title] [-w windowid] [-e command ...]\n"
48 #define XEMBED_FOCUS_IN 4
49 #define XEMBED_FOCUS_OUT 5
52 #define ESC_BUF_SIZ 256
53 #define ESC_ARG_SIZ 16
54 #define STR_BUF_SIZ 256
55 #define STR_ARG_SIZ 16
56 #define DRAW_BUF_SIZ 20*1024
58 #define XK_NO_MOD UINT_MAX
61 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
64 #define CLEANMASK(mask) (mask & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
65 #define SERRNO strerror(errno)
66 #define MIN(a, b) ((a) < (b) ? (a) : (b))
67 #define MAX(a, b) ((a) < (b) ? (b) : (a))
68 #define LEN(a) (sizeof(a) / sizeof(a[0]))
69 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
70 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
71 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
72 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
73 #define IS_SET(flag) (term.mode & (flag))
74 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
76 #define VT102ID "\033[?6c"
78 enum glyph_attribute {
88 enum cursor_movement {
115 MODE_MOUSEMOTION = 64,
124 ESC_STR = 4, /* DSC, OSC, PM, APC */
126 ESC_STR_END = 16, /* a final string was encountered */
127 ESC_TEST = 32, /* Enter in test mode */
138 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
140 typedef unsigned char uchar;
141 typedef unsigned int uint;
142 typedef unsigned long ulong;
143 typedef unsigned short ushort;
146 char c[UTF_SIZ]; /* character code */
147 uchar mode; /* attribute flags */
148 ushort fg; /* foreground */
149 ushort bg; /* background */
150 uchar state; /* state flags */
156 Glyph attr; /* current char attributes */
162 /* CSI Escape sequence structs */
163 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
165 char buf[ESC_BUF_SIZ]; /* raw string */
166 int len; /* raw string length */
168 int arg[ESC_ARG_SIZ];
169 int narg; /* nb of args */
173 /* STR Escape sequence structs */
174 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
176 char type; /* ESC type ... */
177 char buf[STR_BUF_SIZ]; /* raw string */
178 int len; /* raw string length */
179 char *args[STR_ARG_SIZ];
180 int narg; /* nb of args */
183 /* Internal representation of the screen */
185 int row; /* nb row */
186 int col; /* nb col */
187 Line *line; /* screen */
188 Line *alt; /* alternate screen */
189 bool *dirty; /* dirtyness of lines */
190 TCursor c; /* cursor */
191 int top; /* top scroll limit */
192 int bot; /* bottom scroll limit */
193 int mode; /* terminal mode flags */
194 int esc; /* escape state flags */
198 /* Purely graphic info */
204 Atom xembed, wmdeletewin;
210 bool isfixed; /* is fixed geometry? */
211 int fx, fy, fw, fh; /* fixed geometry */
212 int tw, th; /* tty width and height */
213 int w; /* window width */
214 int h; /* window height */
215 int ch; /* char height */
216 int cw; /* char width */
217 char state; /* focus, redraw, visible */
226 /* TODO: use better name for vars... */
237 struct timeval tclick1;
238 struct timeval tclick2;
251 void (*func)(const Arg *);
255 /* function definitions used in config.h */
256 static void xzoom(const Arg *);
258 /* Config.h for applying patches and the configuration. */
272 /* Drawing Context */
274 XftColor xft_col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
276 Font font, bfont, ifont, ibfont;
279 static void die(const char *, ...);
280 static void draw(void);
281 static void redraw(void);
282 static void drawregion(int, int, int, int);
283 static void execsh(void);
284 static void sigchld(int);
285 static void run(void);
287 static void csidump(void);
288 static void csihandle(void);
289 static void csiparse(void);
290 static void csireset(void);
291 static void strdump(void);
292 static void strhandle(void);
293 static void strparse(void);
294 static void strreset(void);
296 static void tclearregion(int, int, int, int);
297 static void tcursor(int);
298 static void tdeletechar(int);
299 static void tdeleteline(int);
300 static void tinsertblank(int);
301 static void tinsertblankline(int);
302 static void tmoveto(int, int);
303 static void tnew(int, int);
304 static void tnewline(int);
305 static void tputtab(bool);
306 static void tputc(char *, int);
307 static void treset(void);
308 static int tresize(int, int);
309 static void tscrollup(int, int);
310 static void tscrolldown(int, int);
311 static void tsetattr(int*, int);
312 static void tsetchar(char *, Glyph *, int, int);
313 static void tsetscroll(int, int);
314 static void tswapscreen(void);
315 static void tsetdirt(int, int);
316 static void tsetmode(bool, bool, int *, int);
317 static void tfulldirt(void);
319 static void ttynew(void);
320 static void ttyread(void);
321 static void ttyresize(void);
322 static void ttywrite(const char *, size_t);
324 static void xdraws(char *, Glyph, int, int, int, int);
325 static void xhints(void);
326 static void xclear(int, int, int, int);
327 static void xdrawcursor(void);
328 static void xinit(void);
329 static void xloadcols(void);
330 static void xresettitle(void);
331 static void xseturgency(int);
332 static void xsetsel(char*);
333 static void xtermclear(int, int, int, int);
334 static void xresize(int, int);
336 static void expose(XEvent *);
337 static void visibility(XEvent *);
338 static void unmap(XEvent *);
339 static char *kmap(KeySym, uint);
340 static void kpress(XEvent *);
341 static void cmessage(XEvent *);
342 static void cresize(int width, int height);
343 static void resize(XEvent *);
344 static void focus(XEvent *);
345 static void brelease(XEvent *);
346 static void bpress(XEvent *);
347 static void bmotion(XEvent *);
348 static void selnotify(XEvent *);
349 static void selclear(XEvent *);
350 static void selrequest(XEvent *);
352 static void selinit(void);
353 static inline bool selected(int, int);
354 static void selcopy(void);
355 static void selpaste(void);
356 static void selscroll(int, int);
358 static int utf8decode(char *, long *);
359 static int utf8encode(long *, char *);
360 static int utf8size(char *);
361 static int isfullutf8(char *, int);
363 static ssize_t xwrite(int, char *, size_t);
364 static void *xmalloc(size_t);
365 static void *xrealloc(void *, size_t);
366 static void *xcalloc(size_t nmemb, size_t size);
368 static void (*handler[LASTEvent])(XEvent *) = {
370 [ClientMessage] = cmessage,
371 [ConfigureNotify] = resize,
372 [VisibilityNotify] = visibility,
373 [UnmapNotify] = unmap,
377 [MotionNotify] = bmotion,
378 [ButtonPress] = bpress,
379 [ButtonRelease] = brelease,
380 [SelectionClear] = selclear,
381 [SelectionNotify] = selnotify,
382 [SelectionRequest] = selrequest,
389 static CSIEscape csiescseq;
390 static STREscape strescseq;
393 static Selection sel;
394 static int iofd = -1;
395 static char **opt_cmd = NULL;
396 static char *opt_io = NULL;
397 static char *opt_title = NULL;
398 static char *opt_embed = NULL;
399 static char *opt_class = NULL;
400 static char *opt_font = NULL;
402 static char *usedfont = NULL;
403 static int usedfontsize = 0;
406 xwrite(int fd, char *s, size_t len) {
410 ssize_t r = write(fd, s, len);
420 xmalloc(size_t len) {
421 void *p = malloc(len);
424 die("Out of memory\n");
430 xrealloc(void *p, size_t len) {
431 if((p = realloc(p, len)) == NULL)
432 die("Out of memory\n");
438 xcalloc(size_t nmemb, size_t size) {
439 void *p = calloc(nmemb, size);
442 die("Out of memory\n");
448 utf8decode(char *s, long *u) {
454 if(~c & B7) { /* 0xxxxxxx */
457 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
458 *u = c&(B4|B3|B2|B1|B0);
460 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
461 *u = c&(B3|B2|B1|B0);
463 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
470 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
472 if((c & (B7|B6)) != B7) /* 10xxxxxx */
475 *u |= c & (B5|B4|B3|B2|B1|B0);
478 if((n == 1 && *u < 0x80) ||
479 (n == 2 && *u < 0x800) ||
480 (n == 3 && *u < 0x10000) ||
481 (*u >= 0xD800 && *u <= 0xDFFF)) {
493 utf8encode(long *u, char *s) {
501 *sp = uc; /* 0xxxxxxx */
503 } else if(*u < 0x800) {
504 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
506 } else if(uc < 0x10000) {
507 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
509 } else if(uc <= 0x10FFFF) {
510 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
516 for(i=n,++sp; i>0; --i,++sp)
517 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
529 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
530 UTF-8 otherwise return 0 */
532 isfullutf8(char *s, int b) {
540 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
542 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
544 ((b == 2) && (*c2&(B7|B6)) == B7))) {
546 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
548 ((b == 2) && (*c2&(B7|B6)) == B7) ||
549 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
562 } else if((c&(B7|B6|B5)) == (B7|B6)) {
564 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
573 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
574 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
578 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
579 if(sel.xtarget == None)
580 sel.xtarget = XA_STRING;
588 return LIMIT(x, 0, term.col-1);
596 return LIMIT(y, 0, term.row-1);
600 selected(int x, int y) {
603 if(sel.ey == y && sel.by == y) {
604 bx = MIN(sel.bx, sel.ex);
605 ex = MAX(sel.bx, sel.ex);
606 return BETWEEN(x, bx, ex);
609 return ((sel.b.y < y && y < sel.e.y)
610 || (y == sel.e.y && x <= sel.e.x))
611 || (y == sel.b.y && x >= sel.b.x
612 && (x <= sel.e.x || sel.b.y != sel.e.y));
616 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
618 *b = e->xbutton.button;
620 *x = x2col(e->xbutton.x);
621 *y = y2row(e->xbutton.y);
623 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
624 sel.b.y = MIN(sel.by, sel.ey);
625 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
626 sel.e.y = MAX(sel.by, sel.ey);
630 mousereport(XEvent *e) {
631 int x = x2col(e->xbutton.x);
632 int y = y2row(e->xbutton.y);
633 int button = e->xbutton.button;
634 int state = e->xbutton.state;
635 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
636 static int ob, ox, oy;
639 if(e->xbutton.type == MotionNotify) {
640 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
644 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
650 if(e->xbutton.type == ButtonPress) {
656 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
657 + (state & Mod4Mask ? 8 : 0)
658 + (state & ControlMask ? 16 : 0);
660 ttywrite(buf, sizeof(buf));
665 if(IS_SET(MODE_MOUSE)) {
667 } else if(e->xbutton.button == Button1) {
670 tsetdirt(sel.b.y, sel.e.y);
674 sel.ex = sel.bx = x2col(e->xbutton.x);
675 sel.ey = sel.by = y2row(e->xbutton.y);
682 int x, y, bufsize, is_selected = 0, size;
688 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
689 ptr = str = xmalloc(bufsize);
691 /* append every set & selected glyph to the selection */
692 for(y = 0; y < term.row; y++) {
693 gp = &term.line[y][0];
694 last = gp + term.col;
696 while(--last >= gp && !(last->state & GLYPH_SET))
699 for(x = 0; gp <= last; x++, ++gp) {
700 if(!(is_selected = selected(x, y)))
703 p = (gp->state & GLYPH_SET) ? gp->c : " ";
705 memcpy(ptr, p, size);
708 /* \n at the end of every selected line except for the last one */
709 if(is_selected && y < sel.e.y)
714 sel.alt = IS_SET(MODE_ALTSCREEN);
719 selnotify(XEvent *e) {
720 ulong nitems, ofs, rem;
727 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
728 False, AnyPropertyType, &type, &format,
729 &nitems, &rem, &data)) {
730 fprintf(stderr, "Clipboard allocation failed\n");
733 ttywrite((const char *) data, nitems * format / 8);
735 /* number of 32-bit chunks returned */
736 ofs += nitems * format / 32;
742 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
743 xw.win, CurrentTime);
746 void selclear(XEvent *e) {
750 tsetdirt(sel.b.y, sel.e.y);
754 selrequest(XEvent *e) {
755 XSelectionRequestEvent *xsre;
757 Atom xa_targets, string;
759 xsre = (XSelectionRequestEvent *) e;
760 xev.type = SelectionNotify;
761 xev.requestor = xsre->requestor;
762 xev.selection = xsre->selection;
763 xev.target = xsre->target;
764 xev.time = xsre->time;
768 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
769 if(xsre->target == xa_targets) {
770 /* respond with the supported type */
771 string = sel.xtarget;
772 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
773 XA_ATOM, 32, PropModeReplace,
774 (uchar *) &string, 1);
775 xev.property = xsre->property;
776 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
777 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
778 xsre->target, 8, PropModeReplace,
779 (uchar *) sel.clip, strlen(sel.clip));
780 xev.property = xsre->property;
783 /* all done, send a notification to the listener */
784 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
785 fprintf(stderr, "Error sending SelectionNotify event\n");
790 /* register the selection for both the clipboard and the primary */
796 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
798 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
799 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
803 brelease(XEvent *e) {
806 if(IS_SET(MODE_MOUSE)) {
811 if(e->xbutton.button == Button2) {
813 } else if(e->xbutton.button == Button1) {
815 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
816 term.dirty[sel.ey] = 1;
817 if(sel.bx == sel.ex && sel.by == sel.ey) {
819 gettimeofday(&now, NULL);
821 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
822 /* triple click on the line */
823 sel.b.x = sel.bx = 0;
824 sel.e.x = sel.ex = term.col;
825 sel.b.y = sel.e.y = sel.ey;
827 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
828 /* double click to select word */
830 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
831 term.line[sel.ey][sel.bx-1].c[0] != ' ') {
835 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
836 term.line[sel.ey][sel.ex+1].c[0] != ' ') {
840 sel.b.y = sel.e.y = sel.ey;
848 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
849 gettimeofday(&sel.tclick1, NULL);
854 int starty, endy, oldey, oldex;
856 if(IS_SET(MODE_MOUSE)) {
864 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
866 if(oldey != sel.ey || oldex != sel.ex) {
867 starty = MIN(oldey, sel.ey);
868 endy = MAX(oldey, sel.ey);
869 tsetdirt(starty, endy);
875 die(const char *errstr, ...) {
878 va_start(ap, errstr);
879 vfprintf(stderr, errstr, ap);
887 char *envshell = getenv("SHELL");
888 const struct passwd *pass = getpwuid(getuid());
889 char buf[sizeof(long) * 8 + 1];
896 setenv("LOGNAME", pass->pw_name, 1);
897 setenv("USER", pass->pw_name, 1);
898 setenv("SHELL", pass->pw_shell, 0);
899 setenv("HOME", pass->pw_dir, 0);
902 snprintf(buf, sizeof(buf), "%lu", xw.win);
903 setenv("WINDOWID", buf, 1);
905 signal(SIGCHLD, SIG_DFL);
906 signal(SIGHUP, SIG_DFL);
907 signal(SIGINT, SIG_DFL);
908 signal(SIGQUIT, SIG_DFL);
909 signal(SIGTERM, SIG_DFL);
910 signal(SIGALRM, SIG_DFL);
912 DEFAULT(envshell, shell);
913 setenv("TERM", termname, 1);
914 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
915 execvp(args[0], args);
923 if(waitpid(pid, &stat, 0) < 0)
924 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
926 if(WIFEXITED(stat)) {
927 exit(WEXITSTATUS(stat));
936 struct winsize w = {term.row, term.col, 0, 0};
938 /* seems to work fine on linux, openbsd and freebsd */
939 if(openpty(&m, &s, NULL, NULL, &w) < 0)
940 die("openpty failed: %s\n", SERRNO);
942 switch(pid = fork()) {
944 die("fork failed\n");
947 setsid(); /* create a new process group */
948 dup2(s, STDIN_FILENO);
949 dup2(s, STDOUT_FILENO);
950 dup2(s, STDERR_FILENO);
951 if(ioctl(s, TIOCSCTTY, NULL) < 0)
952 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
960 signal(SIGCHLD, sigchld);
962 iofd = (!strcmp(opt_io, "-")) ?
964 open(opt_io, O_WRONLY | O_CREAT, 0666);
966 fprintf(stderr, "Error opening %s:%s\n",
967 opt_io, strerror(errno));
977 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
979 fprintf(stderr, "\n");
984 static char buf[BUFSIZ];
985 static int buflen = 0;
988 int charsize; /* size of utf8 char in bytes */
992 /* append read bytes to unprocessed bytes */
993 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
994 die("Couldn't read from shell: %s\n", SERRNO);
996 /* process every complete utf8 char */
999 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1000 charsize = utf8decode(ptr, &utf8c);
1001 utf8encode(&utf8c, s);
1007 /* keep any uncomplete utf8 char for the next call */
1008 memmove(buf, ptr, buflen);
1012 ttywrite(const char *s, size_t n) {
1013 if(write(cmdfd, s, n) == -1)
1014 die("write error on tty: %s\n", SERRNO);
1021 w.ws_row = term.row;
1022 w.ws_col = term.col;
1023 w.ws_xpixel = xw.tw;
1024 w.ws_ypixel = xw.th;
1025 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1026 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1030 tsetdirt(int top, int bot) {
1033 LIMIT(top, 0, term.row-1);
1034 LIMIT(bot, 0, term.row-1);
1036 for(i = top; i <= bot; i++)
1042 tsetdirt(0, term.row-1);
1049 if(mode == CURSOR_SAVE) {
1051 } else if(mode == CURSOR_LOAD) {
1061 term.c = (TCursor){{
1065 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1067 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1068 for(i = tabspaces; i < term.col; i += tabspaces)
1071 term.bot = term.row - 1;
1072 term.mode = MODE_WRAP;
1074 tclearregion(0, 0, term.col-1, term.row-1);
1078 tnew(int col, int row) {
1079 /* set screen size */
1082 term.line = xmalloc(term.row * sizeof(Line));
1083 term.alt = xmalloc(term.row * sizeof(Line));
1084 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
1085 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
1087 for(row = 0; row < term.row; row++) {
1088 term.line[row] = xmalloc(term.col * sizeof(Glyph));
1089 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
1090 term.dirty[row] = 0;
1092 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1099 Line *tmp = term.line;
1101 term.line = term.alt;
1103 term.mode ^= MODE_ALTSCREEN;
1108 tscrolldown(int orig, int n) {
1112 LIMIT(n, 0, term.bot-orig+1);
1114 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1116 for(i = term.bot; i >= orig+n; i--) {
1117 temp = term.line[i];
1118 term.line[i] = term.line[i-n];
1119 term.line[i-n] = temp;
1122 term.dirty[i-n] = 1;
1129 tscrollup(int orig, int n) {
1132 LIMIT(n, 0, term.bot-orig+1);
1134 tclearregion(0, orig, term.col-1, orig+n-1);
1136 for(i = orig; i <= term.bot-n; i++) {
1137 temp = term.line[i];
1138 term.line[i] = term.line[i+n];
1139 term.line[i+n] = temp;
1142 term.dirty[i+n] = 1;
1145 selscroll(orig, -n);
1149 selscroll(int orig, int n) {
1153 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1154 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1158 if(sel.by < term.top) {
1162 if(sel.ey > term.bot) {
1166 sel.b.y = sel.by, sel.b.x = sel.bx;
1167 sel.e.y = sel.ey, sel.e.x = sel.ex;
1172 tnewline(int first_col) {
1176 tscrollup(term.top, 1);
1180 tmoveto(first_col ? 0 : term.c.x, y);
1185 /* int noarg = 1; */
1186 char *p = csiescseq.buf;
1190 csiescseq.priv = 1, p++;
1192 while(p < csiescseq.buf+csiescseq.len) {
1193 while(isdigit(*p)) {
1194 csiescseq.arg[csiescseq.narg] *= 10;
1195 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1197 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ) {
1198 csiescseq.narg++, p++;
1200 csiescseq.mode = *p;
1209 tmoveto(int x, int y) {
1210 LIMIT(x, 0, term.col-1);
1211 LIMIT(y, 0, term.row-1);
1212 term.c.state &= ~CURSOR_WRAPNEXT;
1218 tsetchar(char *c, Glyph *attr, int x, int y) {
1219 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1220 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1221 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1222 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1223 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1224 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1225 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1226 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1227 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1231 * The table is proudly stolen from rxvt.
1233 if(attr->mode & ATTR_GFX) {
1234 if(c[0] >= 0x41 && c[0] <= 0x7e
1235 && vt100_0[c[0] - 0x41]) {
1236 c = vt100_0[c[0] - 0x41];
1241 term.line[y][x] = *attr;
1242 memcpy(term.line[y][x].c, c, UTF_SIZ);
1243 term.line[y][x].state |= GLYPH_SET;
1247 tclearregion(int x1, int y1, int x2, int y2) {
1251 temp = x1, x1 = x2, x2 = temp;
1253 temp = y1, y1 = y2, y2 = temp;
1255 LIMIT(x1, 0, term.col-1);
1256 LIMIT(x2, 0, term.col-1);
1257 LIMIT(y1, 0, term.row-1);
1258 LIMIT(y2, 0, term.row-1);
1260 for(y = y1; y <= y2; y++) {
1262 for(x = x1; x <= x2; x++)
1263 term.line[y][x].state = 0;
1268 tdeletechar(int n) {
1269 int src = term.c.x + n;
1271 int size = term.col - src;
1273 term.dirty[term.c.y] = 1;
1275 if(src >= term.col) {
1276 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1280 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1281 size * sizeof(Glyph));
1282 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1286 tinsertblank(int n) {
1289 int size = term.col - dst;
1291 term.dirty[term.c.y] = 1;
1293 if(dst >= term.col) {
1294 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1298 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1299 size * sizeof(Glyph));
1300 tclearregion(src, term.c.y, dst - 1, term.c.y);
1304 tinsertblankline(int n) {
1305 if(term.c.y < term.top || term.c.y > term.bot)
1308 tscrolldown(term.c.y, n);
1312 tdeleteline(int n) {
1313 if(term.c.y < term.top || term.c.y > term.bot)
1316 tscrollup(term.c.y, n);
1320 tsetattr(int *attr, int l) {
1323 for(i = 0; i < l; i++) {
1326 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1327 | ATTR_ITALIC | ATTR_BLINK);
1328 term.c.attr.fg = defaultfg;
1329 term.c.attr.bg = defaultbg;
1332 term.c.attr.mode |= ATTR_BOLD;
1334 case 3: /* enter standout (highlight) */
1335 term.c.attr.mode |= ATTR_ITALIC;
1338 term.c.attr.mode |= ATTR_UNDERLINE;
1341 term.c.attr.mode |= ATTR_BLINK;
1344 term.c.attr.mode |= ATTR_REVERSE;
1348 term.c.attr.mode &= ~ATTR_BOLD;
1350 case 23: /* leave standout (highlight) mode */
1351 term.c.attr.mode &= ~ATTR_ITALIC;
1354 term.c.attr.mode &= ~ATTR_UNDERLINE;
1357 term.c.attr.mode &= ~ATTR_BLINK;
1360 term.c.attr.mode &= ~ATTR_REVERSE;
1363 if(i + 2 < l && attr[i + 1] == 5) {
1365 if(BETWEEN(attr[i], 0, 255)) {
1366 term.c.attr.fg = attr[i];
1369 "erresc: bad fgcolor %d\n",
1374 "erresc(38): gfx attr %d unknown\n",
1379 term.c.attr.fg = defaultfg;
1382 if(i + 2 < l && attr[i + 1] == 5) {
1384 if(BETWEEN(attr[i], 0, 255)) {
1385 term.c.attr.bg = attr[i];
1388 "erresc: bad bgcolor %d\n",
1393 "erresc(48): gfx attr %d unknown\n",
1398 term.c.attr.bg = defaultbg;
1401 if(BETWEEN(attr[i], 30, 37)) {
1402 term.c.attr.fg = attr[i] - 30;
1403 } else if(BETWEEN(attr[i], 40, 47)) {
1404 term.c.attr.bg = attr[i] - 40;
1405 } else if(BETWEEN(attr[i], 90, 97)) {
1406 term.c.attr.fg = attr[i] - 90 + 8;
1407 } else if(BETWEEN(attr[i], 100, 107)) {
1408 term.c.attr.bg = attr[i] - 100 + 8;
1411 "erresc(default): gfx attr %d unknown\n",
1412 attr[i]), csidump();
1420 tsetscroll(int t, int b) {
1423 LIMIT(t, 0, term.row-1);
1424 LIMIT(b, 0, term.row-1);
1434 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1437 tsetmode(bool priv, bool set, int *args, int narg) {
1440 for(lim = args + narg; args < lim; ++args) {
1444 case 1: /* DECCKM -- Cursor key */
1445 MODBIT(term.mode, set, MODE_APPKEYPAD);
1447 case 5: /* DECSCNM -- Reverse video */
1449 MODBIT(term.mode, set, MODE_REVERSE);
1450 if(mode != term.mode)
1453 case 6: /* XXX: DECOM -- Origin */
1455 case 7: /* DECAWM -- Auto wrap */
1456 MODBIT(term.mode, set, MODE_WRAP);
1458 case 8: /* XXX: DECARM -- Auto repeat */
1460 case 0: /* Error (IGNORED) */
1461 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1464 MODBIT(term.c.state, !set, CURSOR_HIDE);
1466 case 1000: /* 1000,1002: enable xterm mouse report */
1467 MODBIT(term.mode, set, MODE_MOUSEBTN);
1470 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1472 case 1049: /* = 1047 and 1048 */
1475 if(IS_SET(MODE_ALTSCREEN))
1476 tclearregion(0, 0, term.col-1, term.row-1);
1477 if((set && !IS_SET(MODE_ALTSCREEN)) ||
1478 (!set && IS_SET(MODE_ALTSCREEN))) {
1485 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1488 /* case 2: DECANM -- ANSI/VT52 (NOT SUPPOURTED) */
1489 /* case 3: DECCOLM -- Column (NOT SUPPORTED) */
1490 /* case 4: DECSCLM -- Scroll (NOT SUPPORTED) */
1491 /* case 18: DECPFF -- Printer feed (NOT SUPPORTED) */
1492 /* case 19: DECPEX -- Printer extent (NOT SUPPORTED) */
1493 /* case 42: DECNRCM -- National characters (NOT SUPPORTED) */
1495 "erresc: unknown private set/reset mode %d\n",
1501 case 0: /* Error (IGNORED) */
1503 case 2: /* KAM -- keyboard action */
1504 MODBIT(term.mode, set, MODE_KBDLOCK);
1506 case 4: /* IRM -- Insertion-replacement */
1507 MODBIT(term.mode, set, MODE_INSERT);
1509 case 12: /* XXX: SRM -- Send/Receive */
1511 case 20: /* LNM -- Linefeed/new line */
1512 MODBIT(term.mode, set, MODE_CRLF);
1516 "erresc: unknown set/reset mode %d\n",
1528 switch(csiescseq.mode) {
1531 fprintf(stderr, "erresc: unknown csi ");
1535 case '@': /* ICH -- Insert <n> blank char */
1536 DEFAULT(csiescseq.arg[0], 1);
1537 tinsertblank(csiescseq.arg[0]);
1539 case 'A': /* CUU -- Cursor <n> Up */
1541 DEFAULT(csiescseq.arg[0], 1);
1542 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1544 case 'B': /* CUD -- Cursor <n> Down */
1545 DEFAULT(csiescseq.arg[0], 1);
1546 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1548 case 'c': /* DA -- Device Attributes */
1549 if(csiescseq.arg[0] == 0)
1550 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1552 case 'C': /* CUF -- Cursor <n> Forward */
1554 DEFAULT(csiescseq.arg[0], 1);
1555 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1557 case 'D': /* CUB -- Cursor <n> Backward */
1558 DEFAULT(csiescseq.arg[0], 1);
1559 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1561 case 'E': /* CNL -- Cursor <n> Down and first col */
1562 DEFAULT(csiescseq.arg[0], 1);
1563 tmoveto(0, term.c.y+csiescseq.arg[0]);
1565 case 'F': /* CPL -- Cursor <n> Up and first col */
1566 DEFAULT(csiescseq.arg[0], 1);
1567 tmoveto(0, term.c.y-csiescseq.arg[0]);
1569 case 'g': /* TBC -- Tabulation clear */
1570 switch (csiescseq.arg[0]) {
1571 case 0: /* clear current tab stop */
1572 term.tabs[term.c.x] = 0;
1574 case 3: /* clear all the tabs */
1575 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1581 case 'G': /* CHA -- Move to <col> */
1583 DEFAULT(csiescseq.arg[0], 1);
1584 tmoveto(csiescseq.arg[0]-1, term.c.y);
1586 case 'H': /* CUP -- Move to <row> <col> */
1588 DEFAULT(csiescseq.arg[0], 1);
1589 DEFAULT(csiescseq.arg[1], 1);
1590 tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1592 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1593 DEFAULT(csiescseq.arg[0], 1);
1594 while(csiescseq.arg[0]--)
1597 case 'J': /* ED -- Clear screen */
1599 switch(csiescseq.arg[0]) {
1601 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1602 if(term.c.y < term.row-1)
1603 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1607 tclearregion(0, 0, term.col-1, term.c.y-1);
1608 tclearregion(0, term.c.y, term.c.x, term.c.y);
1611 tclearregion(0, 0, term.col-1, term.row-1);
1617 case 'K': /* EL -- Clear line */
1618 switch(csiescseq.arg[0]) {
1620 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1623 tclearregion(0, term.c.y, term.c.x, term.c.y);
1626 tclearregion(0, term.c.y, term.col-1, term.c.y);
1630 case 'S': /* SU -- Scroll <n> line up */
1631 DEFAULT(csiescseq.arg[0], 1);
1632 tscrollup(term.top, csiescseq.arg[0]);
1634 case 'T': /* SD -- Scroll <n> line down */
1635 DEFAULT(csiescseq.arg[0], 1);
1636 tscrolldown(term.top, csiescseq.arg[0]);
1638 case 'L': /* IL -- Insert <n> blank lines */
1639 DEFAULT(csiescseq.arg[0], 1);
1640 tinsertblankline(csiescseq.arg[0]);
1642 case 'l': /* RM -- Reset Mode */
1643 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1645 case 'M': /* DL -- Delete <n> lines */
1646 DEFAULT(csiescseq.arg[0], 1);
1647 tdeleteline(csiescseq.arg[0]);
1649 case 'X': /* ECH -- Erase <n> char */
1650 DEFAULT(csiescseq.arg[0], 1);
1651 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1653 case 'P': /* DCH -- Delete <n> char */
1654 DEFAULT(csiescseq.arg[0], 1);
1655 tdeletechar(csiescseq.arg[0]);
1657 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1658 DEFAULT(csiescseq.arg[0], 1);
1659 while(csiescseq.arg[0]--)
1662 case 'd': /* VPA -- Move to <row> */
1663 DEFAULT(csiescseq.arg[0], 1);
1664 tmoveto(term.c.x, csiescseq.arg[0]-1);
1666 case 'h': /* SM -- Set terminal mode */
1667 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1669 case 'm': /* SGR -- Terminal attribute (color) */
1670 tsetattr(csiescseq.arg, csiescseq.narg);
1672 case 'r': /* DECSTBM -- Set Scrolling Region */
1673 if(csiescseq.priv) {
1676 DEFAULT(csiescseq.arg[0], 1);
1677 DEFAULT(csiescseq.arg[1], term.row);
1678 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1682 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1683 tcursor(CURSOR_SAVE);
1685 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1686 tcursor(CURSOR_LOAD);
1697 for(i = 0; i < csiescseq.len; i++) {
1698 c = csiescseq.buf[i] & 0xff;
1701 } else if(c == '\n') {
1703 } else if(c == '\r') {
1705 } else if(c == 0x1b) {
1708 printf("(%02x)", c);
1716 memset(&csiescseq, 0, sizeof(csiescseq));
1724 * TODO: make this being useful in case of color palette change.
1730 switch(strescseq.type) {
1731 case ']': /* OSC -- Operating System Command */
1737 * TODO: Handle special chars in string, like umlauts.
1740 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1744 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1746 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1749 fprintf(stderr, "erresc: unknown str ");
1754 case 'k': /* old title set compatibility */
1755 XStoreName(xw.dpy, xw.win, strescseq.buf);
1757 case 'P': /* DSC -- Device Control String */
1758 case '_': /* APC -- Application Program Command */
1759 case '^': /* PM -- Privacy Message */
1761 fprintf(stderr, "erresc: unknown str ");
1771 * TODO: Implement parsing like for CSI when required.
1772 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1782 printf("ESC%c", strescseq.type);
1783 for(i = 0; i < strescseq.len; i++) {
1784 c = strescseq.buf[i] & 0xff;
1787 } else if(c == '\n') {
1789 } else if(c == '\r') {
1791 } else if(c == 0x1b) {
1794 printf("(%02x)", c);
1802 memset(&strescseq, 0, sizeof(strescseq));
1806 tputtab(bool forward) {
1812 for(++x; x < term.col && !term.tabs[x]; ++x)
1817 for(--x; x > 0 && !term.tabs[x]; --x)
1820 tmoveto(x, term.c.y);
1824 tputc(char *c, int len) {
1826 bool control = ascii < '\x20' || ascii == 0177;
1829 if (xwrite(iofd, c, len) < 0) {
1830 fprintf(stderr, "Error writting in %s:%s\n",
1831 opt_io, strerror(errno));
1837 * STR sequences must be checked before of anything
1838 * because it can use some control codes as part of the sequence
1840 if(term.esc & ESC_STR) {
1843 term.esc = ESC_START | ESC_STR_END;
1845 case '\a': /* backwards compatibility to xterm */
1850 strescseq.buf[strescseq.len++] = ascii;
1851 if(strescseq.len+1 >= STR_BUF_SIZ) {
1859 * Actions of control codes must be performed as soon they arrive
1860 * because they can be embedded inside a control sequence, and
1861 * they must not cause conflicts with sequences.
1869 tmoveto(term.c.x-1, term.c.y);
1872 tmoveto(0, term.c.y);
1877 /* go to first col if the mode is set */
1878 tnewline(IS_SET(MODE_CRLF));
1880 case '\a': /* BEL */
1881 if(!(xw.state & WIN_FOCUSED))
1884 case '\033': /* ESC */
1886 term.esc = ESC_START;
1888 case '\016': /* SO */
1889 term.c.attr.mode |= ATTR_GFX;
1891 case '\017': /* SI */
1892 term.c.attr.mode &= ~ATTR_GFX;
1894 case '\032': /* SUB */
1895 case '\030': /* CAN */
1898 case '\005': /* ENQ (IGNORED) */
1899 case '\000': /* NUL (IGNORED) */
1900 case '\021': /* XON (IGNORED) */
1901 case '\023': /* XOFF (IGNORED) */
1902 case 0177: /* DEL (IGNORED) */
1905 } else if(term.esc & ESC_START) {
1906 if(term.esc & ESC_CSI) {
1907 csiescseq.buf[csiescseq.len++] = ascii;
1908 if(BETWEEN(ascii, 0x40, 0x7E)
1909 || csiescseq.len >= ESC_BUF_SIZ) {
1911 csiparse(), csihandle();
1913 } else if(term.esc & ESC_STR_END) {
1917 } else if(term.esc & ESC_ALTCHARSET) {
1919 case '0': /* Line drawing set */
1920 term.c.attr.mode |= ATTR_GFX;
1922 case 'B': /* USASCII */
1923 term.c.attr.mode &= ~ATTR_GFX;
1925 case 'A': /* UK (IGNORED) */
1926 case '<': /* multinational charset (IGNORED) */
1927 case '5': /* Finnish (IGNORED) */
1928 case 'C': /* Finnish (IGNORED) */
1929 case 'K': /* German (IGNORED) */
1932 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1935 } else if(term.esc & ESC_TEST) {
1936 if(ascii == '8') { /* DEC screen alignment test. */
1937 char E[UTF_SIZ] = "E";
1940 for(x = 0; x < term.col; ++x) {
1941 for(y = 0; y < term.row; ++y)
1942 tsetchar(E, &term.c.attr, x, y);
1949 term.esc |= ESC_CSI;
1952 term.esc |= ESC_TEST;
1954 case 'P': /* DCS -- Device Control String */
1955 case '_': /* APC -- Application Program Command */
1956 case '^': /* PM -- Privacy Message */
1957 case ']': /* OSC -- Operating System Command */
1958 case 'k': /* old title set compatibility */
1960 strescseq.type = ascii;
1961 term.esc |= ESC_STR;
1963 case '(': /* set primary charset G0 */
1964 term.esc |= ESC_ALTCHARSET;
1966 case ')': /* set secondary charset G1 (IGNORED) */
1967 case '*': /* set tertiary charset G2 (IGNORED) */
1968 case '+': /* set quaternary charset G3 (IGNORED) */
1971 case 'D': /* IND -- Linefeed */
1972 if(term.c.y == term.bot) {
1973 tscrollup(term.top, 1);
1975 tmoveto(term.c.x, term.c.y+1);
1979 case 'E': /* NEL -- Next line */
1980 tnewline(1); /* always go to first col */
1983 case 'H': /* HTS -- Horizontal tab stop */
1984 term.tabs[term.c.x] = 1;
1987 case 'M': /* RI -- Reverse index */
1988 if(term.c.y == term.top) {
1989 tscrolldown(term.top, 1);
1991 tmoveto(term.c.x, term.c.y-1);
1995 case 'Z': /* DECID -- Identify Terminal */
1996 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1999 case 'c': /* RIS -- Reset to inital state */
2004 case '=': /* DECPAM -- Application keypad */
2005 term.mode |= MODE_APPKEYPAD;
2008 case '>': /* DECPNM -- Normal keypad */
2009 term.mode &= ~MODE_APPKEYPAD;
2012 case '7': /* DECSC -- Save Cursor */
2013 tcursor(CURSOR_SAVE);
2016 case '8': /* DECRC -- Restore Cursor */
2017 tcursor(CURSOR_LOAD);
2020 case '\\': /* ST -- Stop */
2024 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2025 (uchar) ascii, isprint(ascii)? ascii:'.');
2030 * All characters which forms part of a sequence are not
2036 * Display control codes only if we are in graphic mode
2038 if(control && !(term.c.attr.mode & ATTR_GFX))
2040 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2042 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
2043 tnewline(1); /* always go to first col */
2044 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2045 if(term.c.x+1 < term.col)
2046 tmoveto(term.c.x+1, term.c.y);
2048 term.c.state |= CURSOR_WRAPNEXT;
2052 tresize(int col, int row) {
2054 int minrow = MIN(row, term.row);
2055 int mincol = MIN(col, term.col);
2056 int slide = term.c.y - row + 1;
2059 if(col < 1 || row < 1)
2062 /* free unneeded rows */
2065 /* slide screen to keep cursor where we expect it -
2066 * tscrollup would work here, but we can optimize to
2067 * memmove because we're freeing the earlier lines */
2068 for(/* i = 0 */; i < slide; i++) {
2072 memmove(term.line, term.line + slide, row * sizeof(Line));
2073 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2075 for(i += row; i < term.row; i++) {
2080 /* resize to new height */
2081 term.line = xrealloc(term.line, row * sizeof(Line));
2082 term.alt = xrealloc(term.alt, row * sizeof(Line));
2083 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2084 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2086 /* resize each row to new width, zero-pad if needed */
2087 for(i = 0; i < minrow; i++) {
2089 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2090 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2091 for(x = mincol; x < col; x++) {
2092 term.line[i][x].state = 0;
2093 term.alt[i][x].state = 0;
2097 /* allocate any new rows */
2098 for(/* i == minrow */; i < row; i++) {
2100 term.line[i] = xcalloc(col, sizeof(Glyph));
2101 term.alt [i] = xcalloc(col, sizeof(Glyph));
2103 if(col > term.col) {
2104 bp = term.tabs + term.col;
2106 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2107 while(--bp > term.tabs && !*bp)
2109 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2112 /* update terminal size */
2115 /* make use of the LIMIT in tmoveto */
2116 tmoveto(term.c.x, term.c.y);
2117 /* reset scrolling region */
2118 tsetscroll(0, row-1);
2124 xresize(int col, int row) {
2125 xw.tw = MAX(1, 2*borderpx + col * xw.cw);
2126 xw.th = MAX(1, 2*borderpx + row * xw.ch);
2128 XftDrawChange(xw.xft_draw, xw.buf);
2134 XRenderColor xft_color = { .alpha = 0 };
2136 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2137 for(i = 0; i < LEN(colorname); i++) {
2140 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.xft_col[i])) {
2141 die("Could not allocate color '%s'\n", colorname[i]);
2145 /* load colors [16-255] ; same colors as xterm */
2146 for(i = 16, r = 0; r < 6; r++) {
2147 for(g = 0; g < 6; g++) {
2148 for(b = 0; b < 6; b++) {
2149 xft_color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
2150 xft_color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
2151 xft_color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
2152 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color, &dc.xft_col[i])) {
2153 die("Could not allocate color %d\n", i);
2160 for(r = 0; r < 24; r++, i++) {
2161 xft_color.red = xft_color.green = xft_color.blue = 0x0808 + 0x0a0a * r;
2162 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color,
2164 die("Could not allocate color %d\n", i);
2170 xtermclear(int col1, int row1, int col2, int row2) {
2171 XftDrawRect(xw.xft_draw,
2172 &dc.xft_col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2173 borderpx + col1 * xw.cw,
2174 borderpx + row1 * xw.ch,
2175 (col2-col1+1) * xw.cw,
2176 (row2-row1+1) * xw.ch);
2180 * Absolute coordinates.
2183 xclear(int x1, int y1, int x2, int y2) {
2184 XftDrawRect(xw.xft_draw,
2185 &dc.xft_col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2186 x1, y1, x2-x1, y2-y1);
2191 XClassHint class = {opt_class ? opt_class : termname, termname};
2192 XWMHints wm = {.flags = InputHint, .input = 1};
2193 XSizeHints *sizeh = NULL;
2195 sizeh = XAllocSizeHints();
2196 if(xw.isfixed == False) {
2197 sizeh->flags = PSize | PResizeInc | PBaseSize;
2198 sizeh->height = xw.h;
2199 sizeh->width = xw.w;
2200 sizeh->height_inc = xw.ch;
2201 sizeh->width_inc = xw.cw;
2202 sizeh->base_height = 2*borderpx;
2203 sizeh->base_width = 2*borderpx;
2205 sizeh->flags = PMaxSize | PMinSize;
2206 sizeh->min_width = sizeh->max_width = xw.fw;
2207 sizeh->min_height = sizeh->max_height = xw.fh;
2210 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2215 xloadfont(Font *f, FcPattern *pattern) {
2219 match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
2222 if(!(f->xft_set = XftFontOpenPattern(xw.dpy, match))) {
2223 FcPatternDestroy(match);
2227 f->ascent = f->xft_set->ascent;
2228 f->descent = f->xft_set->descent;
2230 f->rbearing = f->xft_set->max_advance_width;
2232 f->height = f->xft_set->height;
2233 f->width = f->lbearing + f->rbearing;
2239 xloadfonts(char *fontstr, int fontsize) {
2244 if(fontstr[0] == '-') {
2245 pattern = XftXlfdParse(fontstr, False, False);
2247 pattern = FcNameParse((FcChar8 *)fontstr);
2251 die("st: can't open font %s\n", fontstr);
2254 FcPatternDel(pattern, FC_PIXEL_SIZE);
2255 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2256 usedfontsize = fontsize;
2258 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2259 if(result == FcResultMatch) {
2260 usedfontsize = (int)fontval;
2263 * Default font size is 12, if none given. This is to
2264 * have a known usedfontsize value.
2266 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2271 if(xloadfont(&dc.font, pattern))
2272 die("st: can't open font %s\n", fontstr);
2274 /* Setting character width and height. */
2275 xw.cw = dc.font.width;
2276 xw.ch = dc.font.height;
2278 FcPatternDel(pattern, FC_WEIGHT);
2279 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2280 if(xloadfont(&dc.bfont, pattern))
2281 die("st: can't open font %s\n", fontstr);
2283 FcPatternDel(pattern, FC_SLANT);
2284 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2285 if(xloadfont(&dc.ibfont, pattern))
2286 die("st: can't open font %s\n", fontstr);
2288 FcPatternDel(pattern, FC_WEIGHT);
2289 if(xloadfont(&dc.ifont, pattern))
2290 die("st: can't open font %s\n", fontstr);
2292 FcPatternDestroy(pattern);
2296 xzoom(const Arg *arg)
2298 xloadfonts(usedfont, usedfontsize + arg->i);
2305 XSetWindowAttributes attrs;
2308 int sw, sh, major, minor;
2310 if(!(xw.dpy = XOpenDisplay(NULL)))
2311 die("Can't open display\n");
2312 xw.scr = XDefaultScreen(xw.dpy);
2313 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2316 usedfont = (opt_font == NULL)? font : opt_font;
2317 xloadfonts(usedfont, 0);
2320 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2323 /* adjust fixed window geometry */
2325 sw = DisplayWidth(xw.dpy, xw.scr);
2326 sh = DisplayHeight(xw.dpy, xw.scr);
2328 xw.fx = sw + xw.fx - xw.fw - 1;
2330 xw.fy = sh + xw.fy - xw.fh - 1;
2335 /* window - default size */
2336 xw.h = 2*borderpx + term.row * xw.ch;
2337 xw.w = 2*borderpx + term.col * xw.cw;
2342 attrs.background_pixel = dc.xft_col[defaultbg].pixel;
2343 attrs.border_pixel = dc.xft_col[defaultbg].pixel;
2344 attrs.bit_gravity = NorthWestGravity;
2345 attrs.event_mask = FocusChangeMask | KeyPressMask
2346 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2347 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2348 attrs.colormap = xw.cmap;
2350 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
2351 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2352 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2354 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2358 /* double buffering */
2359 if(!XdbeQueryExtension(xw.dpy, &major, &minor))
2360 die("Xdbe extension is not present\n");
2361 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
2363 /* Xft rendering context */
2364 xw.xft_draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2367 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
2368 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2369 | XIMStatusNothing, XNClientWindow, xw.win,
2370 XNFocusWindow, xw.win, NULL);
2372 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
2374 /* white cursor, black outline */
2375 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2376 XDefineCursor(xw.dpy, xw.win, cursor);
2377 XRecolorCursor(xw.dpy, cursor,
2378 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2379 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2381 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2382 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2383 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2386 XMapWindow(xw.dpy, xw.win);
2392 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2393 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2394 width = charlen * xw.cw;
2395 Font *font = &dc.font;
2397 XftColor *fg = &dc.xft_col[base.fg], *bg = &dc.xft_col[base.bg],
2398 *temp, revfg, revbg;
2399 XRenderColor colfg, colbg;
2401 if(base.mode & ATTR_BOLD) {
2402 if(BETWEEN(base.fg, 0, 7)) {
2403 /* basic system colors */
2404 fg = &dc.xft_col[base.fg + 8];
2405 } else if(BETWEEN(base.fg, 16, 195)) {
2407 fg = &dc.xft_col[base.fg + 36];
2408 } else if(BETWEEN(base.fg, 232, 251)) {
2410 fg = &dc.xft_col[base.fg + 4];
2413 * Those ranges will not be brightened:
2414 * 8 - 15 – bright system colors
2415 * 196 - 231 – highest 256 color cube
2416 * 252 - 255 – brightest colors in greyscale
2421 if(base.mode & ATTR_ITALIC)
2423 if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
2426 if(IS_SET(MODE_REVERSE)) {
2427 if(fg == &dc.xft_col[defaultfg]) {
2428 fg = &dc.xft_col[defaultbg];
2430 colfg.red = ~fg->color.red;
2431 colfg.green = ~fg->color.green;
2432 colfg.blue = ~fg->color.blue;
2433 colfg.alpha = fg->color.alpha;
2434 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2438 if(bg == &dc.xft_col[defaultbg]) {
2439 bg = &dc.xft_col[defaultfg];
2441 colbg.red = ~bg->color.red;
2442 colbg.green = ~bg->color.green;
2443 colbg.blue = ~bg->color.blue;
2444 colbg.alpha = bg->color.alpha;
2445 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2450 if(base.mode & ATTR_REVERSE)
2451 temp = fg, fg = bg, bg = temp;
2453 XftTextExtentsUtf8(xw.dpy, font->xft_set, (FcChar8 *)s, bytelen,
2455 width = extents.xOff;
2457 /* Intelligent cleaning up of the borders. */
2459 xclear(0, (y == 0)? 0 : winy, borderpx,
2460 winy + xw.ch + (y == term.row-1)? xw.h : 0);
2462 if(x + charlen >= term.col-1) {
2463 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2464 (y == term.row-1)? xw.h : (winy + xw.ch));
2467 xclear(winx, 0, winx + width, borderpx);
2469 xclear(winx, winy + xw.ch, winx + width, xw.h);
2471 XftDrawRect(xw.xft_draw, bg, winx, winy, width, xw.ch);
2472 XftDrawStringUtf8(xw.xft_draw, fg, font->xft_set, winx,
2473 winy + font->ascent, (FcChar8 *)s, bytelen);
2475 if(base.mode & ATTR_UNDERLINE) {
2476 XftDrawRect(xw.xft_draw, fg, winx, winy + font->ascent + 1,
2483 static int oldx = 0, oldy = 0;
2485 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs, 0};
2487 LIMIT(oldx, 0, term.col-1);
2488 LIMIT(oldy, 0, term.row-1);
2490 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2491 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2493 /* remove the old cursor */
2494 if(term.line[oldy][oldx].state & GLYPH_SET) {
2495 sl = utf8size(term.line[oldy][oldx].c);
2496 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
2499 xtermclear(oldx, oldy, oldx, oldy);
2502 /* draw the new one */
2503 if(!(term.c.state & CURSOR_HIDE)) {
2504 if(!(xw.state & WIN_FOCUSED))
2507 if(IS_SET(MODE_REVERSE))
2508 g.mode |= ATTR_REVERSE, g.fg = defaultcs, g.bg = defaultfg;
2511 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2512 oldx = term.c.x, oldy = term.c.y;
2518 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
2523 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2527 XSync(xw.dpy, False); /* necessary for a good tput flash */
2528 nanosleep(&tv, NULL);
2533 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2535 drawregion(0, 0, term.col, term.row);
2536 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2540 drawregion(int x1, int y1, int x2, int y2) {
2541 int ic, ib, x, y, ox, sl;
2543 char buf[DRAW_BUF_SIZ];
2544 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
2546 if((sel.alt && !alt) || (!sel.alt && alt))
2548 if(!(xw.state & WIN_VISIBLE))
2551 for(y = y1; y < y2; y++) {
2555 xtermclear(0, y, term.col, y);
2557 base = term.line[y][0];
2559 for(x = x1; x < x2; x++) {
2560 new = term.line[y][x];
2561 if(ena_sel && *(new.c) && selected(x, y))
2562 new.mode ^= ATTR_REVERSE;
2563 if(ib > 0 && (!(new.state & GLYPH_SET)
2564 || ATTRCMP(base, new)
2565 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2566 xdraws(buf, base, ox, y, ic, ib);
2569 if(new.state & GLYPH_SET) {
2574 sl = utf8size(new.c);
2575 memcpy(buf+ib, new.c, sl);
2581 xdraws(buf, base, ox, y, ic, ib);
2587 expose(XEvent *ev) {
2588 XExposeEvent *e = &ev->xexpose;
2590 if(xw.state & WIN_REDRAW) {
2592 xw.state &= ~WIN_REDRAW;
2597 visibility(XEvent *ev) {
2598 XVisibilityEvent *e = &ev->xvisibility;
2600 if(e->state == VisibilityFullyObscured) {
2601 xw.state &= ~WIN_VISIBLE;
2602 } else if(!(xw.state & WIN_VISIBLE)) {
2603 /* need a full redraw for next Expose, not just a buf copy */
2604 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2610 xw.state &= ~WIN_VISIBLE;
2614 xseturgency(int add) {
2615 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2617 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2618 XSetWMHints(xw.dpy, xw.win, h);
2624 if(ev->type == FocusIn) {
2625 XSetICFocus(xw.xic);
2626 xw.state |= WIN_FOCUSED;
2629 XUnsetICFocus(xw.xic);
2630 xw.state &= ~WIN_FOCUSED;
2635 kmap(KeySym k, uint state) {
2640 for(i = 0; i < LEN(key); i++) {
2643 if(key[i].k == k && ((state & mask) == mask
2644 || (mask == XK_NO_MOD && !state))) {
2645 return (char*)key[i].s;
2652 kpress(XEvent *ev) {
2653 XKeyEvent *e = &ev->xkey;
2655 char buf[32], *customkey;
2656 int len, meta, shift, i;
2659 if (IS_SET(MODE_KBDLOCK))
2662 meta = e->state & Mod1Mask;
2663 shift = e->state & ShiftMask;
2664 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2667 for(i = 0; i < LEN(shortcuts); i++) {
2668 if((ksym == shortcuts[i].keysym)
2669 && (CLEANMASK(shortcuts[i].mod) == \
2670 CLEANMASK(e->state))
2671 && shortcuts[i].func) {
2672 shortcuts[i].func(&(shortcuts[i].arg));
2676 /* 2. custom keys from config.h */
2677 if((customkey = kmap(ksym, e->state))) {
2678 ttywrite(customkey, strlen(customkey));
2679 /* 2. hardcoded (overrides X lookup) */
2686 /* XXX: shift up/down doesn't work */
2687 sprintf(buf, "\033%c%c",
2688 IS_SET(MODE_APPKEYPAD) ? 'O' : '[',
2689 (shift ? "dacb":"DACB")[ksym - XK_Left]);
2697 if(IS_SET(MODE_CRLF)) {
2698 ttywrite("\r\n", 2);
2706 if(meta && len == 1)
2707 ttywrite("\033", 1);
2716 cmessage(XEvent *e) {
2718 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2719 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2720 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2721 xw.state |= WIN_FOCUSED;
2723 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2724 xw.state &= ~WIN_FOCUSED;
2726 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
2727 /* Send SIGHUP to shell */
2734 cresize(int width, int height)
2743 col = (xw.w - 2*borderpx) / xw.cw;
2744 row = (xw.h - 2*borderpx) / xw.ch;
2753 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2756 cresize(e->xconfigure.width, e->xconfigure.height);
2763 int xfd = XConnectionNumber(xw.dpy), i;
2764 struct timeval drawtimeout, *tv = NULL;
2768 FD_SET(cmdfd, &rfd);
2770 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
2773 die("select failed: %s\n", SERRNO);
2777 * Stop after a certain number of reads so the user does not
2778 * feel like the system is stuttering.
2780 if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
2784 * Just wait a bit so it isn't disturbing the
2785 * user and the system is able to write something.
2787 drawtimeout.tv_sec = 0;
2788 drawtimeout.tv_usec = 5;
2795 while(XPending(xw.dpy)) {
2796 XNextEvent(xw.dpy, &ev);
2797 if(XFilterEvent(&ev, None))
2799 if(handler[ev.type])
2800 (handler[ev.type])(&ev);
2809 main(int argc, char *argv[]) {
2810 int i, bitm, xr, yr;
2813 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2816 for(i = 1; i < argc; i++) {
2817 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2820 opt_class = argv[i];
2823 /* eat every remaining arguments */
2835 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2840 if(bitm & WidthValue)
2842 if(bitm & HeightValue)
2844 if(bitm & XNegative && xw.fx == 0)
2846 if(bitm & XNegative && xw.fy == 0)
2849 if(xw.fh != 0 && xw.fw != 0)
2858 opt_title = argv[i];
2865 opt_embed = argv[i];
2871 setlocale(LC_CTYPE, "");
2872 XSetLocaleModifiers("");