1 /* See LICENSE for licence details. */
2 #define _XOPEN_SOURCE 600
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
18 #include <sys/types.h>
22 #include <X11/Xatom.h>
24 #include <X11/Xutil.h>
25 #include <X11/cursorfont.h>
26 #include <X11/keysym.h>
27 #include <X11/extensions/Xdbe.h>
28 #include <X11/Xft/Xft.h>
29 #include <fontconfig/fontconfig.h>
35 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
37 #elif defined(__FreeBSD__) || defined(__DragonFly__)
42 "st " VERSION " (c) 2010-2012 st engineers\n" \
43 "usage: st [-v] [-c class] [-f font] [-g geometry] [-o file]" \
44 " [-t title] [-w windowid] [-e command ...]\n"
47 #define XEMBED_FOCUS_IN 4
48 #define XEMBED_FOCUS_OUT 5
51 #define ESC_BUF_SIZ 256
52 #define ESC_ARG_SIZ 16
53 #define STR_BUF_SIZ 256
54 #define STR_ARG_SIZ 16
55 #define DRAW_BUF_SIZ 20*1024
57 #define XK_NO_MOD UINT_MAX
60 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
62 #define SERRNO strerror(errno)
63 #define MIN(a, b) ((a) < (b) ? (a) : (b))
64 #define MAX(a, b) ((a) < (b) ? (b) : (a))
65 #define LEN(a) (sizeof(a) / sizeof(a[0]))
66 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
67 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
68 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
69 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
70 #define IS_SET(flag) (term.mode & (flag))
71 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
72 #define X2COL(x) (((x) - BORDER)/xw.cw)
73 #define Y2ROW(y) (((y) - BORDER)/xw.ch)
75 #define VT102ID "\033[?6c"
77 enum glyph_attribute {
87 enum cursor_movement {
114 MODE_MOUSEMOTION = 64,
123 ESC_STR = 4, /* DSC, OSC, PM, APC */
125 ESC_STR_END = 16, /* a final string was encountered */
126 ESC_TEST = 32, /* Enter in test mode */
137 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
139 typedef unsigned char uchar;
140 typedef unsigned int uint;
141 typedef unsigned long ulong;
142 typedef unsigned short ushort;
145 char c[UTF_SIZ]; /* character code */
146 uchar mode; /* attribute flags */
147 ushort fg; /* foreground */
148 ushort bg; /* background */
149 uchar state; /* state flags */
155 Glyph attr; /* current char attributes */
161 /* CSI Escape sequence structs */
162 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
164 char buf[ESC_BUF_SIZ]; /* raw string */
165 int len; /* raw string length */
167 int arg[ESC_ARG_SIZ];
168 int narg; /* nb of args */
172 /* STR Escape sequence structs */
173 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
175 char type; /* ESC type ... */
176 char buf[STR_BUF_SIZ]; /* raw string */
177 int len; /* raw string length */
178 char *args[STR_ARG_SIZ];
179 int narg; /* nb of args */
182 /* Internal representation of the screen */
184 int row; /* nb row */
185 int col; /* nb col */
186 Line *line; /* screen */
187 Line *alt; /* alternate screen */
188 bool *dirty; /* dirtyness of lines */
189 TCursor c; /* cursor */
190 int top; /* top scroll limit */
191 int bot; /* bottom scroll limit */
192 int mode; /* terminal mode flags */
193 int esc; /* escape state flags */
197 /* Purely graphic info */
203 Atom xembed, wmdeletewin;
209 bool isfixed; /* is fixed geometry? */
210 int fx, fy, fw, fh; /* fixed geometry */
211 int tw, th; /* tty width and height */
212 int w; /* window width */
213 int h; /* window height */
214 int ch; /* char height */
215 int cw; /* char width */
216 char state; /* focus, redraw, visible */
225 /* TODO: use better name for vars... */
236 struct timeval tclick1;
237 struct timeval tclick2;
253 /* Drawing Context */
255 XftColor xft_col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
257 Font font, bfont, ifont, ibfont;
260 static void die(const char *, ...);
261 static void draw(void);
262 static void redraw(void);
263 static void drawregion(int, int, int, int);
264 static void execsh(void);
265 static void sigchld(int);
266 static void run(void);
268 static void csidump(void);
269 static void csihandle(void);
270 static void csiparse(void);
271 static void csireset(void);
272 static void strdump(void);
273 static void strhandle(void);
274 static void strparse(void);
275 static void strreset(void);
277 static void tclearregion(int, int, int, int);
278 static void tcursor(int);
279 static void tdeletechar(int);
280 static void tdeleteline(int);
281 static void tinsertblank(int);
282 static void tinsertblankline(int);
283 static void tmoveto(int, int);
284 static void tnew(int, int);
285 static void tnewline(int);
286 static void tputtab(bool);
287 static void tputc(char *, int);
288 static void treset(void);
289 static int tresize(int, int);
290 static void tscrollup(int, int);
291 static void tscrolldown(int, int);
292 static void tsetattr(int*, int);
293 static void tsetchar(char *, Glyph *, int, int);
294 static void tsetscroll(int, int);
295 static void tswapscreen(void);
296 static void tsetdirt(int, int);
297 static void tsetmode(bool, bool, int *, int);
298 static void tfulldirt(void);
300 static void ttynew(void);
301 static void ttyread(void);
302 static void ttyresize(void);
303 static void ttywrite(const char *, size_t);
305 static void xdraws(char *, Glyph, int, int, int, int);
306 static void xhints(void);
307 static void xclear(int, int, int, int);
308 static void xdrawcursor(void);
309 static void xinit(void);
310 static void xloadcols(void);
311 static void xresettitle(void);
312 static void xseturgency(int);
313 static void xsetsel(char*);
314 static void xtermclear(int, int, int, int);
315 static void xresize(int, int);
317 static void expose(XEvent *);
318 static void visibility(XEvent *);
319 static void unmap(XEvent *);
320 static char *kmap(KeySym, uint);
321 static void kpress(XEvent *);
322 static void cmessage(XEvent *);
323 static void resize(XEvent *);
324 static void focus(XEvent *);
325 static void brelease(XEvent *);
326 static void bpress(XEvent *);
327 static void bmotion(XEvent *);
328 static void selnotify(XEvent *);
329 static void selclear(XEvent *);
330 static void selrequest(XEvent *);
332 static void selinit(void);
333 static inline bool selected(int, int);
334 static void selcopy(void);
335 static void selpaste(void);
336 static void selscroll(int, int);
338 static int utf8decode(char *, long *);
339 static int utf8encode(long *, char *);
340 static int utf8size(char *);
341 static int isfullutf8(char *, int);
343 static void *xmalloc(size_t);
344 static void *xrealloc(void *, size_t);
345 static void *xcalloc(size_t nmemb, size_t size);
346 static char *smstrcat(char *, ...);
348 static void (*handler[LASTEvent])(XEvent *) = {
350 [ClientMessage] = cmessage,
351 [ConfigureNotify] = resize,
352 [VisibilityNotify] = visibility,
353 [UnmapNotify] = unmap,
357 [MotionNotify] = bmotion,
358 [ButtonPress] = bpress,
359 [ButtonRelease] = brelease,
360 [SelectionClear] = selclear,
361 [SelectionNotify] = selnotify,
362 [SelectionRequest] = selrequest,
369 static CSIEscape csiescseq;
370 static STREscape strescseq;
373 static Selection sel;
374 static int iofd = -1;
375 static char **opt_cmd = NULL;
376 static char *opt_io = NULL;
377 static char *opt_title = NULL;
378 static char *opt_embed = NULL;
379 static char *opt_class = NULL;
380 static char *opt_font = NULL;
383 xmalloc(size_t len) {
384 void *p = malloc(len);
387 die("Out of memory\n");
393 xrealloc(void *p, size_t len) {
394 if((p = realloc(p, len)) == NULL)
395 die("Out of memory\n");
401 xcalloc(size_t nmemb, size_t size) {
402 void *p = calloc(nmemb, size);
405 die("Out of memory\n");
411 smstrcat(char *src, ...)
417 len = slen = strlen(src);
419 va_start(fmtargs, src);
421 v = va_arg(fmtargs, char *);
428 p = ret = xmalloc(len+1);
429 memmove(p, src, slen);
432 va_start(fmtargs, src);
434 v = va_arg(fmtargs, char *);
449 utf8decode(char *s, long *u) {
455 if(~c & B7) { /* 0xxxxxxx */
458 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
459 *u = c&(B4|B3|B2|B1|B0);
461 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
462 *u = c&(B3|B2|B1|B0);
464 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
471 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
473 if((c & (B7|B6)) != B7) /* 10xxxxxx */
476 *u |= c & (B5|B4|B3|B2|B1|B0);
479 if((n == 1 && *u < 0x80) ||
480 (n == 2 && *u < 0x800) ||
481 (n == 3 && *u < 0x10000) ||
482 (*u >= 0xD800 && *u <= 0xDFFF)) {
494 utf8encode(long *u, char *s) {
502 *sp = uc; /* 0xxxxxxx */
504 } else if(*u < 0x800) {
505 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
507 } else if(uc < 0x10000) {
508 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
510 } else if(uc <= 0x10FFFF) {
511 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
517 for(i=n,++sp; i>0; --i,++sp)
518 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
530 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
531 UTF-8 otherwise return 0 */
533 isfullutf8(char *s, int b) {
541 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
543 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
545 ((b == 2) && (*c2&(B7|B6)) == B7))) {
547 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
549 ((b == 2) && (*c2&(B7|B6)) == B7) ||
550 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
563 } else if((c&(B7|B6|B5)) == (B7|B6)) {
565 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
574 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
575 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
579 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
580 if(sel.xtarget == None)
581 sel.xtarget = XA_STRING;
585 selected(int x, int y) {
588 if(sel.ey == y && sel.by == y) {
589 bx = MIN(sel.bx, sel.ex);
590 ex = MAX(sel.bx, sel.ex);
591 return BETWEEN(x, bx, ex);
594 return ((sel.b.y < y && y < sel.e.y)
595 || (y == sel.e.y && x <= sel.e.x))
596 || (y == sel.b.y && x >= sel.b.x
597 && (x <= sel.e.x || sel.b.y != sel.e.y));
601 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
603 *b = e->xbutton.button;
605 *x = X2COL(e->xbutton.x);
606 *y = Y2ROW(e->xbutton.y);
607 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
608 sel.b.y = MIN(sel.by, sel.ey);
609 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
610 sel.e.y = MAX(sel.by, sel.ey);
614 mousereport(XEvent *e) {
615 int x = X2COL(e->xbutton.x);
616 int y = Y2ROW(e->xbutton.y);
617 int button = e->xbutton.button;
618 int state = e->xbutton.state;
619 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
620 static int ob, ox, oy;
623 if(e->xbutton.type == MotionNotify) {
624 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
628 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
634 if(e->xbutton.type == ButtonPress) {
640 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
641 + (state & Mod4Mask ? 8 : 0)
642 + (state & ControlMask ? 16 : 0);
644 ttywrite(buf, sizeof(buf));
649 if(IS_SET(MODE_MOUSE)) {
651 } else if(e->xbutton.button == Button1) {
654 tsetdirt(sel.b.y, sel.e.y);
658 sel.ex = sel.bx = X2COL(e->xbutton.x);
659 sel.ey = sel.by = Y2ROW(e->xbutton.y);
666 int x, y, bufsize, is_selected = 0, size;
672 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
673 ptr = str = xmalloc(bufsize);
675 /* append every set & selected glyph to the selection */
676 for(y = 0; y < term.row; y++) {
677 for(x = 0; x < term.col; x++) {
678 gp = &term.line[y][x];
680 if(!(is_selected = selected(x, y)))
682 p = (gp->state & GLYPH_SET) ? gp->c : " ";
684 memcpy(ptr, p, size);
687 /* \n at the end of every selected line except for the last one */
688 if(is_selected && y < sel.e.y)
693 sel.alt = IS_SET(MODE_ALTSCREEN);
698 selnotify(XEvent *e) {
699 ulong nitems, ofs, rem;
706 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
707 False, AnyPropertyType, &type, &format,
708 &nitems, &rem, &data)) {
709 fprintf(stderr, "Clipboard allocation failed\n");
712 ttywrite((const char *) data, nitems * format / 8);
714 /* number of 32-bit chunks returned */
715 ofs += nitems * format / 32;
721 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
722 xw.win, CurrentTime);
725 void selclear(XEvent *e) {
729 tsetdirt(sel.b.y, sel.e.y);
733 selrequest(XEvent *e) {
734 XSelectionRequestEvent *xsre;
736 Atom xa_targets, string;
738 xsre = (XSelectionRequestEvent *) e;
739 xev.type = SelectionNotify;
740 xev.requestor = xsre->requestor;
741 xev.selection = xsre->selection;
742 xev.target = xsre->target;
743 xev.time = xsre->time;
747 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
748 if(xsre->target == xa_targets) {
749 /* respond with the supported type */
750 string = sel.xtarget;
751 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
752 XA_ATOM, 32, PropModeReplace,
753 (uchar *) &string, 1);
754 xev.property = xsre->property;
755 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
756 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
757 xsre->target, 8, PropModeReplace,
758 (uchar *) sel.clip, strlen(sel.clip));
759 xev.property = xsre->property;
762 /* all done, send a notification to the listener */
763 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
764 fprintf(stderr, "Error sending SelectionNotify event\n");
769 /* register the selection for both the clipboard and the primary */
775 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
777 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
778 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
782 brelease(XEvent *e) {
785 if(IS_SET(MODE_MOUSE)) {
790 if(e->xbutton.button == Button2) {
792 } else if(e->xbutton.button == Button1) {
794 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
795 term.dirty[sel.ey] = 1;
796 if(sel.bx == sel.ex && sel.by == sel.ey) {
798 gettimeofday(&now, NULL);
800 if(TIMEDIFF(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
801 /* triple click on the line */
802 sel.b.x = sel.bx = 0;
803 sel.e.x = sel.ex = term.col;
804 sel.b.y = sel.e.y = sel.ey;
806 } else if(TIMEDIFF(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
807 /* double click to select word */
809 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
810 term.line[sel.ey][sel.bx-1].c[0] != ' ') {
814 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
815 term.line[sel.ey][sel.ex+1].c[0] != ' ') {
819 sel.b.y = sel.e.y = sel.ey;
827 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
828 gettimeofday(&sel.tclick1, NULL);
833 int starty, endy, oldey, oldex;
835 if(IS_SET(MODE_MOUSE)) {
843 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
845 if(oldey != sel.ey || oldex != sel.ex) {
846 starty = MIN(oldey, sel.ey);
847 endy = MAX(oldey, sel.ey);
848 tsetdirt(starty, endy);
854 die(const char *errstr, ...) {
857 va_start(ap, errstr);
858 vfprintf(stderr, errstr, ap);
866 char *envshell = getenv("SHELL");
872 signal(SIGCHLD, SIG_DFL);
873 signal(SIGHUP, SIG_DFL);
874 signal(SIGINT, SIG_DFL);
875 signal(SIGQUIT, SIG_DFL);
876 signal(SIGTERM, SIG_DFL);
877 signal(SIGALRM, SIG_DFL);
879 DEFAULT(envshell, SHELL);
880 putenv("TERM="TNAME);
881 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
882 execvp(args[0], args);
890 if(waitpid(pid, &stat, 0) < 0)
891 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
893 if(WIFEXITED(stat)) {
894 exit(WEXITSTATUS(stat));
903 struct winsize w = {term.row, term.col, 0, 0};
905 /* seems to work fine on linux, openbsd and freebsd */
906 if(openpty(&m, &s, NULL, NULL, &w) < 0)
907 die("openpty failed: %s\n", SERRNO);
909 switch(pid = fork()) {
911 die("fork failed\n");
914 setsid(); /* create a new process group */
915 dup2(s, STDIN_FILENO);
916 dup2(s, STDOUT_FILENO);
917 dup2(s, STDERR_FILENO);
918 if(ioctl(s, TIOCSCTTY, NULL) < 0)
919 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
927 signal(SIGCHLD, sigchld);
929 if(!strcmp(opt_io, "-")) {
930 iofd = STDOUT_FILENO;
932 if((iofd = open(opt_io, O_WRONLY | O_CREAT, 0666)) < 0) {
933 fprintf(stderr, "Error opening %s:%s\n",
934 opt_io, strerror(errno));
945 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
947 fprintf(stderr, "\n");
952 static char buf[BUFSIZ];
953 static int buflen = 0;
956 int charsize; /* size of utf8 char in bytes */
960 /* append read bytes to unprocessed bytes */
961 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
962 die("Couldn't read from shell: %s\n", SERRNO);
964 /* process every complete utf8 char */
967 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
968 charsize = utf8decode(ptr, &utf8c);
969 utf8encode(&utf8c, s);
975 /* keep any uncomplete utf8 char for the next call */
976 memmove(buf, ptr, buflen);
980 ttywrite(const char *s, size_t n) {
981 if(write(cmdfd, s, n) == -1)
982 die("write error on tty: %s\n", SERRNO);
993 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
994 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
998 tsetdirt(int top, int bot) {
1001 LIMIT(top, 0, term.row-1);
1002 LIMIT(bot, 0, term.row-1);
1004 for(i = top; i <= bot; i++)
1010 tsetdirt(0, term.row-1);
1017 if(mode == CURSOR_SAVE) {
1019 } else if(mode == CURSOR_LOAD) {
1029 term.c = (TCursor){{
1033 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1035 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1036 for(i = TAB; i < term.col; i += TAB)
1039 term.bot = term.row - 1;
1040 term.mode = MODE_WRAP;
1042 tclearregion(0, 0, term.col-1, term.row-1);
1046 tnew(int col, int row) {
1047 /* set screen size */
1050 term.line = xmalloc(term.row * sizeof(Line));
1051 term.alt = xmalloc(term.row * sizeof(Line));
1052 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
1053 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
1055 for(row = 0; row < term.row; row++) {
1056 term.line[row] = xmalloc(term.col * sizeof(Glyph));
1057 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
1058 term.dirty[row] = 0;
1060 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1067 Line *tmp = term.line;
1069 term.line = term.alt;
1071 term.mode ^= MODE_ALTSCREEN;
1076 tscrolldown(int orig, int n) {
1080 LIMIT(n, 0, term.bot-orig+1);
1082 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1084 for(i = term.bot; i >= orig+n; i--) {
1085 temp = term.line[i];
1086 term.line[i] = term.line[i-n];
1087 term.line[i-n] = temp;
1090 term.dirty[i-n] = 1;
1097 tscrollup(int orig, int n) {
1100 LIMIT(n, 0, term.bot-orig+1);
1102 tclearregion(0, orig, term.col-1, orig+n-1);
1104 for(i = orig; i <= term.bot-n; i++) {
1105 temp = term.line[i];
1106 term.line[i] = term.line[i+n];
1107 term.line[i+n] = temp;
1110 term.dirty[i+n] = 1;
1113 selscroll(orig, -n);
1117 selscroll(int orig, int n) {
1121 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1122 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1126 if(sel.by < term.top) {
1130 if(sel.ey > term.bot) {
1134 sel.b.y = sel.by, sel.b.x = sel.bx;
1135 sel.e.y = sel.ey, sel.e.x = sel.ex;
1140 tnewline(int first_col) {
1144 tscrollup(term.top, 1);
1148 tmoveto(first_col ? 0 : term.c.x, y);
1153 /* int noarg = 1; */
1154 char *p = csiescseq.buf;
1158 csiescseq.priv = 1, p++;
1160 while(p < csiescseq.buf+csiescseq.len) {
1161 while(isdigit(*p)) {
1162 csiescseq.arg[csiescseq.narg] *= 10;
1163 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1165 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ) {
1166 csiescseq.narg++, p++;
1168 csiescseq.mode = *p;
1177 tmoveto(int x, int y) {
1178 LIMIT(x, 0, term.col-1);
1179 LIMIT(y, 0, term.row-1);
1180 term.c.state &= ~CURSOR_WRAPNEXT;
1186 tsetchar(char *c, Glyph *attr, int x, int y) {
1187 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1188 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1189 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1190 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1191 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1192 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1193 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1194 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1195 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1199 * The table is proudly stolen from rxvt.
1201 if(attr->mode & ATTR_GFX) {
1202 if(c[0] >= 0x41 && c[0] <= 0x7e
1203 && vt100_0[c[0] - 0x41]) {
1204 c = vt100_0[c[0] - 0x41];
1209 term.line[y][x] = *attr;
1210 memcpy(term.line[y][x].c, c, UTF_SIZ);
1211 term.line[y][x].state |= GLYPH_SET;
1215 tclearregion(int x1, int y1, int x2, int y2) {
1219 temp = x1, x1 = x2, x2 = temp;
1221 temp = y1, y1 = y2, y2 = temp;
1223 LIMIT(x1, 0, term.col-1);
1224 LIMIT(x2, 0, term.col-1);
1225 LIMIT(y1, 0, term.row-1);
1226 LIMIT(y2, 0, term.row-1);
1228 for(y = y1; y <= y2; y++) {
1230 for(x = x1; x <= x2; x++)
1231 term.line[y][x].state = 0;
1236 tdeletechar(int n) {
1237 int src = term.c.x + n;
1239 int size = term.col - src;
1241 term.dirty[term.c.y] = 1;
1243 if(src >= term.col) {
1244 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1248 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1249 size * sizeof(Glyph));
1250 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1254 tinsertblank(int n) {
1257 int size = term.col - dst;
1259 term.dirty[term.c.y] = 1;
1261 if(dst >= term.col) {
1262 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1266 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1267 size * sizeof(Glyph));
1268 tclearregion(src, term.c.y, dst - 1, term.c.y);
1272 tinsertblankline(int n) {
1273 if(term.c.y < term.top || term.c.y > term.bot)
1276 tscrolldown(term.c.y, n);
1280 tdeleteline(int n) {
1281 if(term.c.y < term.top || term.c.y > term.bot)
1284 tscrollup(term.c.y, n);
1288 tsetattr(int *attr, int l) {
1291 for(i = 0; i < l; i++) {
1294 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1295 | ATTR_ITALIC | ATTR_BLINK);
1296 term.c.attr.fg = DefaultFG;
1297 term.c.attr.bg = DefaultBG;
1300 term.c.attr.mode |= ATTR_BOLD;
1302 case 3: /* enter standout (highlight) */
1303 term.c.attr.mode |= ATTR_ITALIC;
1306 term.c.attr.mode |= ATTR_UNDERLINE;
1309 term.c.attr.mode |= ATTR_BLINK;
1312 term.c.attr.mode |= ATTR_REVERSE;
1316 term.c.attr.mode &= ~ATTR_BOLD;
1318 case 23: /* leave standout (highlight) mode */
1319 term.c.attr.mode &= ~ATTR_ITALIC;
1322 term.c.attr.mode &= ~ATTR_UNDERLINE;
1325 term.c.attr.mode &= ~ATTR_BLINK;
1328 term.c.attr.mode &= ~ATTR_REVERSE;
1331 if(i + 2 < l && attr[i + 1] == 5) {
1333 if(BETWEEN(attr[i], 0, 255)) {
1334 term.c.attr.fg = attr[i];
1337 "erresc: bad fgcolor %d\n",
1342 "erresc(38): gfx attr %d unknown\n",
1347 term.c.attr.fg = DefaultFG;
1350 if(i + 2 < l && attr[i + 1] == 5) {
1352 if(BETWEEN(attr[i], 0, 255)) {
1353 term.c.attr.bg = attr[i];
1356 "erresc: bad bgcolor %d\n",
1361 "erresc(48): gfx attr %d unknown\n",
1366 term.c.attr.bg = DefaultBG;
1369 if(BETWEEN(attr[i], 30, 37)) {
1370 term.c.attr.fg = attr[i] - 30;
1371 } else if(BETWEEN(attr[i], 40, 47)) {
1372 term.c.attr.bg = attr[i] - 40;
1373 } else if(BETWEEN(attr[i], 90, 97)) {
1374 term.c.attr.fg = attr[i] - 90 + 8;
1375 } else if(BETWEEN(attr[i], 100, 107)) {
1376 term.c.attr.bg = attr[i] - 100 + 8;
1379 "erresc(default): gfx attr %d unknown\n",
1380 attr[i]), csidump();
1388 tsetscroll(int t, int b) {
1391 LIMIT(t, 0, term.row-1);
1392 LIMIT(b, 0, term.row-1);
1402 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1405 tsetmode(bool priv, bool set, int *args, int narg) {
1408 for(lim = args + narg; args < lim; ++args) {
1412 case 1: /* DECCKM -- Cursor key */
1413 MODBIT(term.mode, set, MODE_APPKEYPAD);
1415 case 5: /* DECSCNM -- Reverse video */
1417 MODBIT(term.mode, set, MODE_REVERSE);
1418 if(mode != term.mode)
1421 case 6: /* XXX: DECOM -- Origin */
1423 case 7: /* DECAWM -- Auto wrap */
1424 MODBIT(term.mode, set, MODE_WRAP);
1426 case 8: /* XXX: DECARM -- Auto repeat */
1428 case 0: /* Error (IGNORED) */
1429 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1432 MODBIT(term.c.state, !set, CURSOR_HIDE);
1434 case 1000: /* 1000,1002: enable xterm mouse report */
1435 MODBIT(term.mode, set, MODE_MOUSEBTN);
1438 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1440 case 1049: /* = 1047 and 1048 */
1443 if(IS_SET(MODE_ALTSCREEN))
1444 tclearregion(0, 0, term.col-1, term.row-1);
1445 if((set && !IS_SET(MODE_ALTSCREEN)) ||
1446 (!set && IS_SET(MODE_ALTSCREEN))) {
1453 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1456 /* case 2: DECANM -- ANSI/VT52 (NOT SUPPOURTED) */
1457 /* case 3: DECCOLM -- Column (NOT SUPPORTED) */
1458 /* case 4: DECSCLM -- Scroll (NOT SUPPORTED) */
1459 /* case 18: DECPFF -- Printer feed (NOT SUPPORTED) */
1460 /* case 19: DECPEX -- Printer extent (NOT SUPPORTED) */
1461 /* case 42: DECNRCM -- National characters (NOT SUPPORTED) */
1463 "erresc: unknown private set/reset mode %d\n",
1469 case 0: /* Error (IGNORED) */
1471 case 2: /* KAM -- keyboard action */
1472 MODBIT(term.mode, set, MODE_KBDLOCK);
1474 case 4: /* IRM -- Insertion-replacement */
1475 MODBIT(term.mode, set, MODE_INSERT);
1477 case 12: /* XXX: SRM -- Send/Receive */
1479 case 20: /* LNM -- Linefeed/new line */
1480 MODBIT(term.mode, set, MODE_CRLF);
1484 "erresc: unknown set/reset mode %d\n",
1496 switch(csiescseq.mode) {
1499 fprintf(stderr, "erresc: unknown csi ");
1503 case '@': /* ICH -- Insert <n> blank char */
1504 DEFAULT(csiescseq.arg[0], 1);
1505 tinsertblank(csiescseq.arg[0]);
1507 case 'A': /* CUU -- Cursor <n> Up */
1509 DEFAULT(csiescseq.arg[0], 1);
1510 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1512 case 'B': /* CUD -- Cursor <n> Down */
1513 DEFAULT(csiescseq.arg[0], 1);
1514 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1516 case 'c': /* DA -- Device Attributes */
1517 if(csiescseq.arg[0] == 0)
1518 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1520 case 'C': /* CUF -- Cursor <n> Forward */
1522 DEFAULT(csiescseq.arg[0], 1);
1523 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1525 case 'D': /* CUB -- Cursor <n> Backward */
1526 DEFAULT(csiescseq.arg[0], 1);
1527 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1529 case 'E': /* CNL -- Cursor <n> Down and first col */
1530 DEFAULT(csiescseq.arg[0], 1);
1531 tmoveto(0, term.c.y+csiescseq.arg[0]);
1533 case 'F': /* CPL -- Cursor <n> Up and first col */
1534 DEFAULT(csiescseq.arg[0], 1);
1535 tmoveto(0, term.c.y-csiescseq.arg[0]);
1537 case 'g': /* TBC -- Tabulation clear */
1538 switch (csiescseq.arg[0]) {
1539 case 0: /* clear current tab stop */
1540 term.tabs[term.c.x] = 0;
1542 case 3: /* clear all the tabs */
1543 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1549 case 'G': /* CHA -- Move to <col> */
1551 DEFAULT(csiescseq.arg[0], 1);
1552 tmoveto(csiescseq.arg[0]-1, term.c.y);
1554 case 'H': /* CUP -- Move to <row> <col> */
1556 DEFAULT(csiescseq.arg[0], 1);
1557 DEFAULT(csiescseq.arg[1], 1);
1558 tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1560 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1561 DEFAULT(csiescseq.arg[0], 1);
1562 while(csiescseq.arg[0]--)
1565 case 'J': /* ED -- Clear screen */
1567 switch(csiescseq.arg[0]) {
1569 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1570 if(term.c.y < term.row-1)
1571 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1575 tclearregion(0, 0, term.col-1, term.c.y-1);
1576 tclearregion(0, term.c.y, term.c.x, term.c.y);
1579 tclearregion(0, 0, term.col-1, term.row-1);
1585 case 'K': /* EL -- Clear line */
1586 switch(csiescseq.arg[0]) {
1588 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1591 tclearregion(0, term.c.y, term.c.x, term.c.y);
1594 tclearregion(0, term.c.y, term.col-1, term.c.y);
1598 case 'S': /* SU -- Scroll <n> line up */
1599 DEFAULT(csiescseq.arg[0], 1);
1600 tscrollup(term.top, csiescseq.arg[0]);
1602 case 'T': /* SD -- Scroll <n> line down */
1603 DEFAULT(csiescseq.arg[0], 1);
1604 tscrolldown(term.top, csiescseq.arg[0]);
1606 case 'L': /* IL -- Insert <n> blank lines */
1607 DEFAULT(csiescseq.arg[0], 1);
1608 tinsertblankline(csiescseq.arg[0]);
1610 case 'l': /* RM -- Reset Mode */
1611 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1613 case 'M': /* DL -- Delete <n> lines */
1614 DEFAULT(csiescseq.arg[0], 1);
1615 tdeleteline(csiescseq.arg[0]);
1617 case 'X': /* ECH -- Erase <n> char */
1618 DEFAULT(csiescseq.arg[0], 1);
1619 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1621 case 'P': /* DCH -- Delete <n> char */
1622 DEFAULT(csiescseq.arg[0], 1);
1623 tdeletechar(csiescseq.arg[0]);
1625 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1626 DEFAULT(csiescseq.arg[0], 1);
1627 while(csiescseq.arg[0]--)
1630 case 'd': /* VPA -- Move to <row> */
1631 DEFAULT(csiescseq.arg[0], 1);
1632 tmoveto(term.c.x, csiescseq.arg[0]-1);
1634 case 'h': /* SM -- Set terminal mode */
1635 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1637 case 'm': /* SGR -- Terminal attribute (color) */
1638 tsetattr(csiescseq.arg, csiescseq.narg);
1640 case 'r': /* DECSTBM -- Set Scrolling Region */
1641 if(csiescseq.priv) {
1644 DEFAULT(csiescseq.arg[0], 1);
1645 DEFAULT(csiescseq.arg[1], term.row);
1646 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1650 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1651 tcursor(CURSOR_SAVE);
1653 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1654 tcursor(CURSOR_LOAD);
1665 for(i = 0; i < csiescseq.len; i++) {
1666 c = csiescseq.buf[i] & 0xff;
1669 } else if(c == '\n') {
1671 } else if(c == '\r') {
1673 } else if(c == 0x1b) {
1676 printf("(%02x)", c);
1684 memset(&csiescseq, 0, sizeof(csiescseq));
1692 * TODO: make this being useful in case of color palette change.
1698 switch(strescseq.type) {
1699 case ']': /* OSC -- Operating System Command */
1705 * TODO: Handle special chars in string, like umlauts.
1708 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1712 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1714 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1717 fprintf(stderr, "erresc: unknown str ");
1722 case 'k': /* old title set compatibility */
1723 XStoreName(xw.dpy, xw.win, strescseq.buf);
1725 case 'P': /* DSC -- Device Control String */
1726 case '_': /* APC -- Application Program Command */
1727 case '^': /* PM -- Privacy Message */
1729 fprintf(stderr, "erresc: unknown str ");
1739 * TODO: Implement parsing like for CSI when required.
1740 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1750 printf("ESC%c", strescseq.type);
1751 for(i = 0; i < strescseq.len; i++) {
1752 c = strescseq.buf[i] & 0xff;
1755 } else if(c == '\n') {
1757 } else if(c == '\r') {
1759 } else if(c == 0x1b) {
1762 printf("(%02x)", c);
1770 memset(&strescseq, 0, sizeof(strescseq));
1774 tputtab(bool forward) {
1780 for(++x; x < term.col && !term.tabs[x]; ++x)
1785 for(--x; x > 0 && !term.tabs[x]; --x)
1788 tmoveto(x, term.c.y);
1792 tputc(char *c, int len) {
1794 bool control = ascii < '\x20' || ascii == 0177;
1797 write(iofd, c, len);
1799 * STR sequences must be checked before of anything
1800 * because it can use some control codes as part of the sequence
1802 if(term.esc & ESC_STR) {
1805 term.esc = ESC_START | ESC_STR_END;
1807 case '\a': /* backwards compatibility to xterm */
1812 strescseq.buf[strescseq.len++] = ascii;
1813 if(strescseq.len+1 >= STR_BUF_SIZ) {
1821 * Actions of control codes must be performed as soon they arrive
1822 * because they can be embedded inside a control sequence, and
1823 * they must not cause conflicts with sequences.
1831 tmoveto(term.c.x-1, term.c.y);
1834 tmoveto(0, term.c.y);
1839 /* go to first col if the mode is set */
1840 tnewline(IS_SET(MODE_CRLF));
1842 case '\a': /* BEL */
1843 if(!(xw.state & WIN_FOCUSED))
1846 case '\033': /* ESC */
1848 term.esc = ESC_START;
1850 case '\016': /* SO */
1851 term.c.attr.mode |= ATTR_GFX;
1853 case '\017': /* SI */
1854 term.c.attr.mode &= ~ATTR_GFX;
1856 case '\032': /* SUB */
1857 case '\030': /* CAN */
1860 case '\005': /* ENQ (IGNORED) */
1861 case '\000': /* NUL (IGNORED) */
1862 case '\021': /* XON (IGNORED) */
1863 case '\023': /* XOFF (IGNORED) */
1864 case 0177: /* DEL (IGNORED) */
1867 } else if(term.esc & ESC_START) {
1868 if(term.esc & ESC_CSI) {
1869 csiescseq.buf[csiescseq.len++] = ascii;
1870 if(BETWEEN(ascii, 0x40, 0x7E)
1871 || csiescseq.len >= ESC_BUF_SIZ) {
1873 csiparse(), csihandle();
1875 } else if(term.esc & ESC_STR_END) {
1879 } else if(term.esc & ESC_ALTCHARSET) {
1881 case '0': /* Line drawing set */
1882 term.c.attr.mode |= ATTR_GFX;
1884 case 'B': /* USASCII */
1885 term.c.attr.mode &= ~ATTR_GFX;
1887 case 'A': /* UK (IGNORED) */
1888 case '<': /* multinational charset (IGNORED) */
1889 case '5': /* Finnish (IGNORED) */
1890 case 'C': /* Finnish (IGNORED) */
1891 case 'K': /* German (IGNORED) */
1894 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1897 } else if(term.esc & ESC_TEST) {
1898 if(ascii == '8') { /* DEC screen alignment test. */
1899 char E[UTF_SIZ] = "E";
1902 for(x = 0; x < term.col; ++x) {
1903 for(y = 0; y < term.row; ++y)
1904 tsetchar(E, &term.c.attr, x, y);
1911 term.esc |= ESC_CSI;
1914 term.esc |= ESC_TEST;
1916 case 'P': /* DCS -- Device Control String */
1917 case '_': /* APC -- Application Program Command */
1918 case '^': /* PM -- Privacy Message */
1919 case ']': /* OSC -- Operating System Command */
1920 case 'k': /* old title set compatibility */
1922 strescseq.type = ascii;
1923 term.esc |= ESC_STR;
1925 case '(': /* set primary charset G0 */
1926 term.esc |= ESC_ALTCHARSET;
1928 case ')': /* set secondary charset G1 (IGNORED) */
1929 case '*': /* set tertiary charset G2 (IGNORED) */
1930 case '+': /* set quaternary charset G3 (IGNORED) */
1933 case 'D': /* IND -- Linefeed */
1934 if(term.c.y == term.bot) {
1935 tscrollup(term.top, 1);
1937 tmoveto(term.c.x, term.c.y+1);
1941 case 'E': /* NEL -- Next line */
1942 tnewline(1); /* always go to first col */
1945 case 'H': /* HTS -- Horizontal tab stop */
1946 term.tabs[term.c.x] = 1;
1949 case 'M': /* RI -- Reverse index */
1950 if(term.c.y == term.top) {
1951 tscrolldown(term.top, 1);
1953 tmoveto(term.c.x, term.c.y-1);
1957 case 'Z': /* DECID -- Identify Terminal */
1958 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1961 case 'c': /* RIS -- Reset to inital state */
1966 case '=': /* DECPAM -- Application keypad */
1967 term.mode |= MODE_APPKEYPAD;
1970 case '>': /* DECPNM -- Normal keypad */
1971 term.mode &= ~MODE_APPKEYPAD;
1974 case '7': /* DECSC -- Save Cursor */
1975 tcursor(CURSOR_SAVE);
1978 case '8': /* DECRC -- Restore Cursor */
1979 tcursor(CURSOR_LOAD);
1982 case '\\': /* ST -- Stop */
1986 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
1987 (uchar) ascii, isprint(ascii)? ascii:'.');
1992 * All characters which forms part of a sequence are not
1998 * Display control codes only if we are in graphic mode
2000 if(control && !(term.c.attr.mode & ATTR_GFX))
2002 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2004 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
2005 tnewline(1); /* always go to first col */
2006 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2007 if(term.c.x+1 < term.col)
2008 tmoveto(term.c.x+1, term.c.y);
2010 term.c.state |= CURSOR_WRAPNEXT;
2014 tresize(int col, int row) {
2016 int minrow = MIN(row, term.row);
2017 int mincol = MIN(col, term.col);
2018 int slide = term.c.y - row + 1;
2021 if(col < 1 || row < 1)
2024 /* free unneeded rows */
2027 /* slide screen to keep cursor where we expect it -
2028 * tscrollup would work here, but we can optimize to
2029 * memmove because we're freeing the earlier lines */
2030 for(/* i = 0 */; i < slide; i++) {
2034 memmove(term.line, term.line + slide, row * sizeof(Line));
2035 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2037 for(i += row; i < term.row; i++) {
2042 /* resize to new height */
2043 term.line = xrealloc(term.line, row * sizeof(Line));
2044 term.alt = xrealloc(term.alt, row * sizeof(Line));
2045 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2046 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2048 /* resize each row to new width, zero-pad if needed */
2049 for(i = 0; i < minrow; i++) {
2051 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2052 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2053 for(x = mincol; x < col; x++) {
2054 term.line[i][x].state = 0;
2055 term.alt[i][x].state = 0;
2059 /* allocate any new rows */
2060 for(/* i == minrow */; i < row; i++) {
2062 term.line[i] = xcalloc(col, sizeof(Glyph));
2063 term.alt [i] = xcalloc(col, sizeof(Glyph));
2065 if(col > term.col) {
2066 bp = term.tabs + term.col;
2068 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2069 while(--bp > term.tabs && !*bp)
2071 for(bp += TAB; bp < term.tabs + col; bp += TAB)
2074 /* update terminal size */
2075 term.col = col, term.row = row;
2076 /* make use of the LIMIT in tmoveto */
2077 tmoveto(term.c.x, term.c.y);
2078 /* reset scrolling region */
2079 tsetscroll(0, row-1);
2085 xresize(int col, int row) {
2086 xw.tw = MAX(1, 2*BORDER + col * xw.cw);
2087 xw.th = MAX(1, 2*BORDER + row * xw.ch);
2089 XftDrawChange(xw.xft_draw, xw.buf);
2095 XRenderColor xft_color = { .alpha = 0 };
2097 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2098 for(i = 0; i < LEN(colorname); i++) {
2101 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.xft_col[i])) {
2102 die("Could not allocate color '%s'\n", colorname[i]);
2106 /* load colors [16-255] ; same colors as xterm */
2107 for(i = 16, r = 0; r < 6; r++) {
2108 for(g = 0; g < 6; g++) {
2109 for(b = 0; b < 6; b++) {
2110 xft_color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
2111 xft_color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
2112 xft_color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
2113 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color, &dc.xft_col[i])) {
2114 die("Could not allocate color %d\n", i);
2121 for(r = 0; r < 24; r++, i++) {
2122 xft_color.red = xft_color.green = xft_color.blue = 0x0808 + 0x0a0a * r;
2123 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color,
2125 die("Could not allocate color %d\n", i);
2131 xtermclear(int col1, int row1, int col2, int row2) {
2132 XftDrawRect(xw.xft_draw,
2133 &dc.xft_col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG],
2134 BORDER + col1 * xw.cw,
2135 BORDER + row1 * xw.ch,
2136 (col2-col1+1) * xw.cw,
2137 (row2-row1+1) * xw.ch);
2141 * Absolute coordinates.
2144 xclear(int x1, int y1, int x2, int y2) {
2145 XftDrawRect(xw.xft_draw,
2146 &dc.xft_col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG],
2147 x1, y1, x2-x1, y2-y1);
2152 XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
2153 XWMHints wm = {.flags = InputHint, .input = 1};
2154 XSizeHints *sizeh = NULL;
2156 sizeh = XAllocSizeHints();
2157 if(xw.isfixed == False) {
2158 sizeh->flags = PSize | PResizeInc | PBaseSize;
2159 sizeh->height = xw.h;
2160 sizeh->width = xw.w;
2161 sizeh->height_inc = xw.ch;
2162 sizeh->width_inc = xw.cw;
2163 sizeh->base_height = 2*BORDER;
2164 sizeh->base_width = 2*BORDER;
2166 sizeh->flags = PMaxSize | PMinSize;
2167 sizeh->min_width = sizeh->max_width = xw.fw;
2168 sizeh->min_height = sizeh->max_height = xw.fh;
2171 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2176 xinitfont(Font *f, char *fontstr) {
2177 FcPattern *pattern, *match;
2180 pattern = FcNameParse((FcChar8 *)fontstr);
2182 die("st: can't open font %s\n", fontstr);
2184 match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
2185 FcPatternDestroy(pattern);
2187 die("st: can't open font %s\n", fontstr);
2188 if(!(f->xft_set = XftFontOpenPattern(xw.dpy, match))) {
2189 FcPatternDestroy(match);
2190 die("st: can't open font %s.\n", fontstr);
2193 f->ascent = f->xft_set->ascent;
2194 f->descent = f->xft_set->descent;
2196 f->rbearing = f->xft_set->max_advance_width;
2198 f->height = f->xft_set->height;
2199 f->width = f->lbearing + f->rbearing;
2203 initfonts(char *fontstr) {
2206 xinitfont(&dc.font, fontstr);
2207 xw.cw = dc.font.width;
2208 xw.ch = dc.font.height;
2210 fstr = smstrcat(fontstr, ":weight=bold", NULL);
2211 xinitfont(&dc.bfont, fstr);
2214 fstr = smstrcat(fontstr, ":slant=italic,oblique", NULL);
2215 xinitfont(&dc.ifont, fstr);
2218 fstr = smstrcat(fontstr, ":weight=bold:slant=italic,oblique", NULL);
2219 xinitfont(&dc.ibfont, fstr);
2225 XSetWindowAttributes attrs;
2228 int sw, sh, major, minor;
2230 if(!(xw.dpy = XOpenDisplay(NULL)))
2231 die("Can't open display\n");
2232 xw.scr = XDefaultScreen(xw.dpy);
2233 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2236 initfonts((opt_font != NULL)? opt_font : FONT);
2239 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2242 /* adjust fixed window geometry */
2244 sw = DisplayWidth(xw.dpy, xw.scr);
2245 sh = DisplayHeight(xw.dpy, xw.scr);
2247 xw.fx = sw + xw.fx - xw.fw - 1;
2249 xw.fy = sh + xw.fy - xw.fh - 1;
2254 /* window - default size */
2255 xw.h = 2*BORDER + term.row * xw.ch;
2256 xw.w = 2*BORDER + term.col * xw.cw;
2261 attrs.background_pixel = dc.xft_col[DefaultBG].pixel;
2262 attrs.border_pixel = dc.xft_col[DefaultBG].pixel;
2263 attrs.bit_gravity = NorthWestGravity;
2264 attrs.event_mask = FocusChangeMask | KeyPressMask
2265 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2266 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2267 attrs.colormap = xw.cmap;
2269 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
2270 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2271 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2273 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2277 /* double buffering */
2278 if(!XdbeQueryExtension(xw.dpy, &major, &minor))
2279 die("Xdbe extension is not present\n");
2280 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
2282 /* Xft rendering context */
2283 xw.xft_draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2286 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
2287 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2288 | XIMStatusNothing, XNClientWindow, xw.win,
2289 XNFocusWindow, xw.win, NULL);
2291 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
2293 /* white cursor, black outline */
2294 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2295 XDefineCursor(xw.dpy, xw.win, cursor);
2296 XRecolorCursor(xw.dpy, cursor,
2297 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2298 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2300 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2301 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2302 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2305 XMapWindow(xw.dpy, xw.win);
2311 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2312 int winx = BORDER + x * xw.cw, winy = BORDER + y * xw.ch,
2313 width = charlen * xw.cw;
2314 Font *font = &dc.font;
2316 XftColor *fg = &dc.xft_col[base.fg], *bg = &dc.xft_col[base.bg],
2317 *temp, revfg, revbg;
2318 XRenderColor colfg, colbg;
2320 if(base.mode & ATTR_REVERSE)
2321 temp = fg, fg = bg, bg = temp;
2323 if(base.mode & ATTR_BOLD) {
2324 if(BETWEEN(base.fg, 0, 7)) {
2325 /* basic system colors */
2326 fg = &dc.xft_col[base.fg + 8];
2327 } else if(BETWEEN(base.fg, 16, 195)) {
2329 fg = &dc.xft_col[base.fg + 36];
2330 } else if(BETWEEN(base.fg, 232, 251)) {
2332 fg = &dc.xft_col[base.fg + 4];
2335 * Those ranges will not be brightened:
2336 * 8 - 15 – bright system colors
2337 * 196 - 231 – highest 256 color cube
2338 * 252 - 255 – brightest colors in greyscale
2343 if(base.mode & ATTR_ITALIC)
2345 if(base.mode & (ATTR_ITALIC|ATTR_ITALIC))
2348 if(IS_SET(MODE_REVERSE)) {
2349 if(fg == &dc.xft_col[DefaultFG]) {
2350 fg = &dc.xft_col[DefaultBG];
2352 colfg.red = ~fg->color.red;
2353 colfg.green = ~fg->color.green;
2354 colfg.blue = ~fg->color.blue;
2355 colfg.alpha = fg->color.alpha;
2356 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2360 if(bg == &dc.xft_col[DefaultBG]) {
2361 bg = &dc.xft_col[DefaultFG];
2363 colbg.red = ~bg->color.red;
2364 colbg.green = ~bg->color.green;
2365 colbg.blue = ~bg->color.blue;
2366 colbg.alpha = bg->color.alpha;
2367 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2372 XftTextExtentsUtf8(xw.dpy, font->xft_set, (FcChar8 *)s, bytelen,
2374 width = extents.xOff;
2376 /* Intelligent cleaning up of the borders. */
2378 xclear(0, (y == 0)? 0 : winy, BORDER,
2379 winy + xw.ch + (y == term.row-1)? xw.h : 0);
2381 if(x + charlen >= term.col-1) {
2382 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2383 (y == term.row-1)? xw.h : (winy + xw.ch));
2386 xclear(winx, 0, winx + width, BORDER);
2388 xclear(winx, winy + xw.ch, winx + width, xw.h);
2390 XftDrawRect(xw.xft_draw, bg, winx, winy, width, xw.ch);
2391 XftDrawStringUtf8(xw.xft_draw, fg, font->xft_set, winx,
2392 winy + font->ascent, (FcChar8 *)s, bytelen);
2394 if(base.mode & ATTR_UNDERLINE) {
2395 XftDrawRect(xw.xft_draw, fg, winx, winy + font->ascent + 1,
2402 static int oldx = 0, oldy = 0;
2404 Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
2406 LIMIT(oldx, 0, term.col-1);
2407 LIMIT(oldy, 0, term.row-1);
2409 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2410 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2412 /* remove the old cursor */
2413 if(term.line[oldy][oldx].state & GLYPH_SET) {
2414 sl = utf8size(term.line[oldy][oldx].c);
2415 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
2418 xtermclear(oldx, oldy, oldx, oldy);
2421 /* draw the new one */
2422 if(!(term.c.state & CURSOR_HIDE)) {
2423 if(!(xw.state & WIN_FOCUSED))
2426 if(IS_SET(MODE_REVERSE))
2427 g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
2430 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2431 oldx = term.c.x, oldy = term.c.y;
2437 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
2442 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2446 XSync(xw.dpy, False); /* necessary for a good tput flash */
2447 nanosleep(&tv, NULL);
2452 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2454 drawregion(0, 0, term.col, term.row);
2455 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2459 drawregion(int x1, int y1, int x2, int y2) {
2460 int ic, ib, x, y, ox, sl;
2462 char buf[DRAW_BUF_SIZ];
2463 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
2465 if((sel.alt && !alt) || (!sel.alt && alt))
2467 if(!(xw.state & WIN_VISIBLE))
2470 for(y = y1; y < y2; y++) {
2474 xtermclear(0, y, term.col, y);
2476 base = term.line[y][0];
2478 for(x = x1; x < x2; x++) {
2479 new = term.line[y][x];
2480 if(ena_sel && *(new.c) && selected(x, y))
2481 new.mode ^= ATTR_REVERSE;
2482 if(ib > 0 && (!(new.state & GLYPH_SET)
2483 || ATTRCMP(base, new)
2484 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2485 xdraws(buf, base, ox, y, ic, ib);
2488 if(new.state & GLYPH_SET) {
2493 sl = utf8size(new.c);
2494 memcpy(buf+ib, new.c, sl);
2500 xdraws(buf, base, ox, y, ic, ib);
2506 expose(XEvent *ev) {
2507 XExposeEvent *e = &ev->xexpose;
2509 if(xw.state & WIN_REDRAW) {
2511 xw.state &= ~WIN_REDRAW;
2516 visibility(XEvent *ev) {
2517 XVisibilityEvent *e = &ev->xvisibility;
2519 if(e->state == VisibilityFullyObscured) {
2520 xw.state &= ~WIN_VISIBLE;
2521 } else if(!(xw.state & WIN_VISIBLE)) {
2522 /* need a full redraw for next Expose, not just a buf copy */
2523 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2529 xw.state &= ~WIN_VISIBLE;
2533 xseturgency(int add) {
2534 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2536 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2537 XSetWMHints(xw.dpy, xw.win, h);
2543 if(ev->type == FocusIn) {
2544 xw.state |= WIN_FOCUSED;
2547 xw.state &= ~WIN_FOCUSED;
2552 kmap(KeySym k, uint state) {
2557 for(i = 0; i < LEN(key); i++) {
2560 if(key[i].k == k && ((state & mask) == mask
2561 || (mask == XK_NO_MOD && !state))) {
2562 return (char*)key[i].s;
2569 kpress(XEvent *ev) {
2570 XKeyEvent *e = &ev->xkey;
2579 if (IS_SET(MODE_KBDLOCK))
2582 meta = e->state & Mod1Mask;
2583 shift = e->state & ShiftMask;
2584 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2586 /* 1. custom keys from config.h */
2587 if((customkey = kmap(ksym, e->state))) {
2588 ttywrite(customkey, strlen(customkey));
2589 /* 2. hardcoded (overrides X lookup) */
2596 /* XXX: shift up/down doesn't work */
2597 sprintf(buf, "\033%c%c",
2598 IS_SET(MODE_APPKEYPAD) ? 'O' : '[',
2599 (shift ? "dacb":"DACB")[ksym - XK_Left]);
2607 if(IS_SET(MODE_CRLF)) {
2608 ttywrite("\r\n", 2);
2616 if(meta && len == 1)
2617 ttywrite("\033", 1);
2626 cmessage(XEvent *e) {
2628 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2629 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2630 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2631 xw.state |= WIN_FOCUSED;
2633 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2634 xw.state &= ~WIN_FOCUSED;
2636 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
2637 /* Send SIGHUP to shell */
2647 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2650 xw.w = e->xconfigure.width;
2651 xw.h = e->xconfigure.height;
2652 col = (xw.w - 2*BORDER) / xw.cw;
2653 row = (xw.h - 2*BORDER) / xw.ch;
2654 if(col == term.col && row == term.row)
2666 int xfd = XConnectionNumber(xw.dpy), i;
2667 struct timeval drawtimeout, *tv = NULL;
2671 FD_SET(cmdfd, &rfd);
2673 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
2676 die("select failed: %s\n", SERRNO);
2680 * Stop after a certain number of reads so the user does not
2681 * feel like the system is stuttering.
2683 if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
2687 * Just wait a bit so it isn't disturbing the
2688 * user and the system is able to write something.
2690 drawtimeout.tv_sec = 0;
2691 drawtimeout.tv_usec = 5;
2698 while(XPending(xw.dpy)) {
2699 XNextEvent(xw.dpy, &ev);
2700 if(XFilterEvent(&ev, xw.win))
2702 if(handler[ev.type])
2703 (handler[ev.type])(&ev);
2712 main(int argc, char *argv[]) {
2713 int i, bitm, xr, yr;
2716 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2719 for(i = 1; i < argc; i++) {
2720 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2723 opt_class = argv[i];
2726 /* eat every remaining arguments */
2738 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2743 if(bitm & WidthValue)
2745 if(bitm & HeightValue)
2747 if(bitm & XNegative && xw.fx == 0)
2749 if(bitm & XNegative && xw.fy == 0)
2752 if(xw.fh != 0 && xw.fw != 0)
2761 opt_title = argv[i];
2768 opt_embed = argv[i];
2774 setlocale(LC_CTYPE, "");