1 /* See LICENSE for licence details. */
13 die(const char *errstr, ...) {
17 vfprintf(stderr, errstr, ap);
24 char *args[3] = {SHELL, "-i", NULL};
25 putenv("TERM=" TNAME);
30 xbell(void) { /* visual bell */
31 XRectangle r = { 0, 0, xw.w, xw.h };
32 XSetForeground(xw.dis, dc.gc, dc.col[BellCol]);
33 XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
44 if((m = posix_openpt(O_RDWR | O_NOCTTY)) < 0)
50 if((pts = ptsname(m)) == NULL)
52 if((s = open(pts, O_RDWR | O_NOCTTY)) < 0)
54 fcntl(s, F_SETFL, O_NDELAY);
55 switch(pid = fork()) {
60 setsid(); /* create a new process group */
61 dup2(s, STDIN_FILENO);
62 dup2(s, STDOUT_FILENO);
63 dup2(s, STDERR_FILENO);
64 if(ioctl(s, TIOCSCTTY, NULL) < 0)
65 die("slave TTIOCSTTY");
77 fprintf(stderr, " %02x %c ", c, isprint(c)?c:'.');
79 fprintf(stderr, "\n");
84 char buf[BUFSIZ] = {0};
87 switch(ret = read(cmdfd, buf, BUFSIZ)) {
88 case -1: /* error or exit */
89 /* XXX: be more precise */
98 ttywrite(char *s, size_t n) {
99 if(write(cmdfd, s, n) == -1)
100 die("write error on tty.");
104 ttyresize(int x, int y) {
109 w.ws_xpixel = w.ws_ypixel = 0;
110 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
111 fprintf(stderr, "Couldn't set window size: %m\n");
127 else if(BETWEEN(c, 0x40, 0x7E))
138 x = term.c.x, y = term.c.y;
139 else if(mode == CSload)
144 tnew(int col, int row) { /* screen size */
145 term.row = row, term.col = col;
146 term.top = 0, term.bot = term.row - 1;
150 term.c.attr.mode = ATnone;
151 term.c.attr.fg = DefaultFG;
152 term.c.attr.bg = DefaultBG;
153 term.c.x = term.c.y = 0;
155 /* allocate screen */
156 term.line = calloc(term.row, sizeof(Line));
157 for(row = 0 ; row < term.row; row++)
158 term.line[row] = calloc(term.col, sizeof(Glyph));
163 Line temp = term.line[term.top];
166 for(i = term.top; i < term.bot; i++)
167 term.line[i] = term.line[i+1];
168 memset(temp, 0, sizeof(Glyph) * term.col);
169 term.line[term.bot] = temp;
175 int y = term.c.y + 1;
178 tscroll(), y = term.bot;
185 escseq.buf[escseq.len++] = c;
186 if(escfinal(c) || escseq.len >= ESCSIZ) {
187 escparse(), eschandle();
196 char *p = escseq.buf;
199 switch(escseq.pre = *p++) {
202 escseq.priv = 1, p++;
204 while(p < escseq.buf+escseq.len) {
206 escseq.arg[escseq.narg] *= 10;
207 escseq.arg[escseq.narg] += *(p++) - '0'/*, noarg = 0 */;
219 /* XXX: graphic character set */
225 tmoveto(int x, int y) {
226 term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
227 term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
232 int xf = term.c.x, yf = term.c.y;
244 xf = term.col-1, yf--;
246 yf = term.top, xf = 0;
254 yf = term.bot, tscroll();
263 term.line[term.c.y][term.c.x] = term.c.attr;
264 term.line[term.c.y][term.c.x].c = c;
265 term.line[term.c.y][term.c.x].state |= CRset | CRupdate;
269 tclearregion(int x1, int y1, int x2, int y2) {
272 LIMIT(x1, 0, term.col-1);
273 LIMIT(x2, 0, term.col-1);
274 LIMIT(y1, 0, term.row-1);
275 LIMIT(y2, 0, term.row-1);
277 /* XXX: could be optimized */
278 for(x = x1; x <= x2; x++)
279 for(y = y1; y <= y2; y++)
280 memset(&term.line[y][x], 0, sizeof(Glyph));
282 xclear(x1, y1, x2, y2);
287 int src = term.c.x + n;
289 int size = term.col - src;
291 if(src >= term.col) {
292 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
295 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
296 tclearregion(term.col-size, term.c.y, term.col-1, term.c.y);
300 tinsertblank(int n) {
303 int size = term.col - n - src;
305 if(dst >= term.col) {
306 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
309 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
310 tclearregion(src, term.c.y, dst, term.c.y);
314 tinsertblankline (int n) {
319 if(term.c.y > term.bot)
321 else if(term.c.y < term.top)
323 if(term.c.y + n >= bot) {
324 tclearregion(0, term.c.y, term.col-1, bot);
327 for(i = bot; i >= term.c.y+n; i--) {
328 /* swap deleted line <-> blanked line */
329 blank = term.line[i];
330 term.line[i] = term.line[i-n];
331 term.line[i-n] = blank;
333 memset(blank, 0, term.col * sizeof(Glyph));
344 if(term.c.y > term.bot)
346 else if(term.c.y < term.top)
348 if(term.c.y + n >= bot) {
349 tclearregion(0, term.c.y, term.col-1, bot);
352 for(i = term.c.y; i <= bot-n; i++) {
353 /* swap deleted line <-> blanked line */
354 blank = term.line[i];
355 term.line[i] = term.line[i+n];
356 term.line[i+n] = blank;
358 memset(blank, 0, term.col * sizeof(Glyph));
363 tsetattr(int *attr, int l) {
366 for(i = 0; i < l; i++) {
369 memset(&term.c.attr, 0, sizeof(term.c.attr));
370 term.c.attr.fg = DefaultFG;
371 term.c.attr.bg = DefaultBG;
374 term.c.attr.mode |= ATbold;
377 term.c.attr.mode |= ATunderline;
380 term.c.attr.mode |= ATreverse;
383 term.c.hidden = CShide;
386 term.c.attr.mode &= ~ATbold;
389 term.c.attr.mode &= ~ATunderline;
392 term.c.attr.mode &= ~ATreverse;
395 term.c.attr.fg = DefaultFG;
398 term.c.attr.fg = DefaultBG;
401 if(BETWEEN(attr[i], 30, 37))
402 term.c.attr.fg = attr[i] - 30;
403 else if(BETWEEN(attr[i], 40, 47))
404 term.c.attr.bg = attr[i] - 40;
411 tsetscroll(int t, int b) {
414 LIMIT(t, 0, term.row-1);
415 LIMIT(b, 0, term.row-1);
431 switch(escseq.mode) {
432 case '@': /* Insert <n> blank char */
433 DEFAULT(escseq.arg[0], 1);
434 tinsertblank(escseq.arg[0]);
436 case 'A': /* Cursor <n> Up */
438 DEFAULT(escseq.arg[0], 1);
439 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
441 case 'B': /* Cursor <n> Down */
442 DEFAULT(escseq.arg[0], 1);
443 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
445 case 'C': /* Cursor <n> Forward */
447 DEFAULT(escseq.arg[0], 1);
448 tmoveto(term.c.x+escseq.arg[0], term.c.y);
450 case 'D': /* Cursor <n> Backward */
451 DEFAULT(escseq.arg[0], 1);
452 tmoveto(term.c.x-escseq.arg[0], term.c.y);
454 case 'E': /* Cursor <n> Down and first col */
455 DEFAULT(escseq.arg[0], 1);
456 tmoveto(0, term.c.y+escseq.arg[0]);
458 case 'F': /* Cursor <n> Up and first col */
459 DEFAULT(escseq.arg[0], 1);
460 tmoveto(0, term.c.y-escseq.arg[0]);
462 case 'G': /* Move to <col> */
464 DEFAULT(escseq.arg[0], 1);
465 tmoveto(escseq.arg[0]-1, term.c.y);
467 case 'H': /* Move to <row> <col> */
469 DEFAULT(escseq.arg[0], 1);
470 DEFAULT(escseq.arg[1], 1);
471 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
473 case 'J': /* Clear screen */
474 switch(escseq.arg[0]) {
476 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
479 tclearregion(0, 0, term.c.x, term.c.y);
482 tclearregion(0, 0, term.col-1, term.row-1);
486 case 'K': /* Clear line */
487 switch(escseq.arg[0]) {
489 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
492 tclearregion(0, term.c.y, term.c.x, term.c.y);
495 tclearregion(0, term.c.y, term.col-1, term.c.y);
499 case 'L': /* Insert <n> blank lines */
500 DEFAULT(escseq.arg[0], 1);
501 tinsertblankline(escseq.arg[0]);
504 if(escseq.priv && escseq.arg[0] == 25)
507 case 'M': /* Delete <n> lines */
508 DEFAULT(escseq.arg[0], 1);
509 tdeleteline(escseq.arg[0]);
511 case 'P': /* Delete <n> char */
512 DEFAULT(escseq.arg[0], 1);
513 tdeletechar(escseq.arg[0]);
515 case 'd': /* Move to <row> */
516 DEFAULT(escseq.arg[0], 1);
517 tmoveto(term.c.x, escseq.arg[0]-1);
519 case 'h': /* Set terminal mode */
520 if(escseq.priv && escseq.arg[0] == 25)
523 case 'm': /* Terminal attribute (color) */
524 tsetattr(escseq.arg, escseq.narg);
530 DEFAULT(escseq.arg[0], 1);
531 DEFAULT(escseq.arg[1], term.row);
532 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
535 case 's': /* Save cursor position */
538 case 'u': /* Load cursor position */
550 printf("rawbuf : %s\n", escseq.buf);
551 printf("prechar : %c\n", escseq.pre);
552 printf("private : %c\n", escseq.priv ? '?' : ' ');
553 printf("narg : %d\n", escseq.narg);
555 for(i = 0; i < escseq.narg; i++)
556 printf("\targ %d = %d\n", i, escseq.arg[i]);
558 printf("mode : %c\n", escseq.mode);
563 memset(&escseq, 0, sizeof(escseq));
568 int space = TAB - term.c.x % TAB;
570 if(term.c.x + space >= term.col)
573 for(; space > 0; space--)
579 static int inesc = 0;
583 /* start of escseq */
585 escreset(), inesc = 1;
601 tmoveto(0, term.c.y);
613 tputs(char *s, int len) {
614 for(; len > 0; len--)
623 for(row = 0; row < term.row; row++) {
624 for(col = 0; col < term.col; col++) {
625 if(col == term.c.x && row == term.c.y)
628 c = term.line[row][col];
629 putchar(c.state & CRset ? c.c : '.');
637 tresize(int col, int row) {
640 int minrow = MIN(row, term.row);
641 int mincol = MIN(col, term.col);
643 if(col < 1 || row < 1)
646 line = calloc(row, sizeof(Line));
647 for(i = 0 ; i < row; i++)
648 line[i] = calloc(col, sizeof(Glyph));
650 for(i = 0 ; i < minrow; i++)
651 memcpy(line[i], term.line[i], mincol * sizeof(Glyph));
653 for(i = 0; i < term.row; i++)
657 LIMIT(term.c.x, 0, col-1);
658 LIMIT(term.c.y, 0, row-1);
659 LIMIT(term.top, 0, row-1);
660 LIMIT(term.bot, 0, row-1);
664 term.col = col, term.row = row;
668 xgetcol(const char *s) {
670 Colormap cmap = DefaultColormap(xw.dis, xw.scr);
672 if(!XAllocNamedColor(xw.dis, cmap, s, &color, &color)) {
673 color.pixel = WhitePixel(xw.dis, xw.scr);
674 fprintf(stderr, "Could not allocate color '%s'\n", s);
681 xclear(int x1, int y1, int x2, int y2) {
682 XClearArea(xw.dis, xw.win,
683 x1 * xw.cw, y1 * xw.ch,
684 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch,
691 int srcy = (term.top+1) * xw.ch;
692 int dsty = term.top * xw.ch;
693 int height = (term.bot-term.top) * xw.ch;
696 XCopyArea(xw.dis, xw.win, xw.win, dc.gc, 0, srcy, xw.w, height, 0, dsty);
697 xclear(0, term.bot, term.col-1, term.bot);
706 unsigned long valuemask;
710 char *args[] = {NULL};
713 xw.dis = XOpenDisplay(NULL);
714 xw.scr = XDefaultScreen(xw.dis);
716 die("can not open display");
719 if(!(dc.font = XLoadQueryFont(xw.dis, FONT)))
720 die("can not find font " FONT);
722 xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
723 xw.ch = dc.font->ascent + dc.font->descent + LINESPACE;
726 for(i = 0; i < LEN(colorname); i++)
727 dc.col[i] = xgetcol(colorname[i]);
729 term.c.attr.fg = DefaultFG;
730 term.c.attr.bg = DefaultBG;
731 term.c.attr.mode = ATnone;
733 xw.h = term.row * xw.ch;
734 xw.w = term.col * xw.cw;
735 /* XXX: this BORDER is useless after the first resize, handle it in xdraws() */
736 xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
741 values.foreground = XWhitePixel(xw.dis, xw.scr);
742 values.font = dc.font->fid;
743 valuemask = GCForeground | GCFont;
744 dc.gc = XCreateGC(xw.dis, xw.win, valuemask, &values);
745 XMapWindow(xw.dis, xw.win);
747 chint.res_name = TNAME, chint.res_class = TNAME;
748 wmhint.input = 1, wmhint.flags = InputHint;
749 shint.height_inc = xw.ch, shint.width_inc = xw.cw;
750 shint.height = xw.h, shint.width = xw.w;
751 shint.flags = PSize | PResizeInc;
752 XSetWMProperties(xw.dis, xw.win, NULL, NULL, &args[0], 0, &shint, &wmhint, &chint);
753 XStoreName(xw.dis, xw.win, TNAME);
758 xdrawc(int x, int y, Glyph g) {
759 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
760 unsigned long xfg, xbg;
763 if(g.mode & ATreverse)
764 xfg = dc.col[g.bg], xbg = dc.col[g.fg];
766 xfg = dc.col[g.fg], xbg = dc.col[g.bg];
768 XSetForeground(xw.dis, dc.gc, xbg);
769 XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
771 XSetForeground(xw.dis, dc.gc, xfg);
772 XDrawString(xw.dis, xw.win, dc.gc, r.x, r.y+dc.font->ascent, &(g.c), 1);
773 if(g.mode & ATbold) /* XXX: bold hack (draw again at x+1) */
774 XDrawString(xw.dis, xw.win, dc.gc, r.x+1, r.y+dc.font->ascent, &(g.c), 1);
776 if(g.mode & ATunderline) {
777 r.y += dc.font->ascent + 1;
778 XDrawLine(xw.dis, xw.win, dc.gc, r.x, r.y, r.x+r.width-1, r.y);
786 Glyph g = {' ', ATnone, DefaultBG, DefaultCS, 0};
788 LIMIT(oldx, 0, term.col-1);
789 LIMIT(oldy, 0, term.row-1);
791 if(term.line[term.c.y][term.c.x].state & CRset)
792 g.c = term.line[term.c.y][term.c.x].c;
793 /* remove the old cursor */
794 if(term.line[oldy][oldx].state & CRset)
795 xdrawc(oldx, oldy, term.line[oldy][oldx]);
796 else xclear(oldx, oldy, oldx, oldy); /* XXX: maybe a bug */
797 if(mode == CSdraw && !term.c.hidden) {
798 xdrawc(term.c.x, term.c.y, g);
799 oldx = term.c.x, oldy = term.c.y;
805 draw(int redraw_all) {
810 XClearWindow(xw.dis, xw.win);
811 /* XXX: drawing could be optimised */
812 for(y = 0; y < term.row; y++) {
813 for(x = 0; x < term.col; x++) {
814 changed = term.line[y][x].state & CRupdate;
815 set = term.line[y][x].state & CRset;
816 if((changed && set) || (redraw_all && set)) {
817 term.line[y][x].state &= ~CRupdate;
818 xdrawc(x, y, term.line[y][x]);
826 kpress(XKeyEvent *e) {
833 meta = e->state & Mod1Mask;
834 shift = e->state & ShiftMask;
835 len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
837 buf[sizeof(buf)-1] = '\0';
845 fprintf(stderr, "errkey: %d\n", (int)ksym);
851 sprintf(buf, "\033[%c", "DACB"[ksym - XK_Left]);
854 case XK_Delete: ttywrite(KEYDELETE, sizeof(KEYDELETE)-1); break;
855 case XK_Home: ttywrite(KEYHOME, sizeof(KEYHOME)-1); break;
856 case XK_End: ttywrite(KEYEND, sizeof(KEYEND) -1); break;
857 case XK_Prior: ttywrite(KEYPREV, sizeof(KEYPREV)-1); break;
858 case XK_Next: ttywrite(KEYNEXT, sizeof(KEYNEXT)-1); break;
860 /* XXX: paste X clipboard */
870 col = e->xconfigure.width / xw.cw;
871 row = e->xconfigure.height / xw.ch;
873 if(term.col != col || term.row != row) {
876 xw.w = e->xconfigure.width;
877 xw.h = e->xconfigure.height;
888 int xfd = XConnectionNumber(xw.dis);
891 XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask);
892 XResizeWindow(xw.dis, xw.win, xw.w , xw.h); /* seems to fix the resize bug in wmii */
899 ret = select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL);
902 fprintf(stderr, "select: %m\n");
906 if(FD_ISSET(xfd, &rfd)) {
907 while(XPending(xw.dis)) {
908 XNextEvent(xw.dis, &ev);
918 case ConfigureNotify:
924 if(FD_ISSET(cmdfd, &rfd)) {
932 main(int argc, char *argv[]) {
933 if(argc == 2 && !strncmp("-v", argv[1], 3))
934 die("st-" VERSION ", © 2009 st engineers\n");
936 die("usage: st [-v]\n");
937 setlocale(LC_CTYPE, "");