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);
45 if((m = posix_openpt(O_RDWR | O_NOCTTY)) < 0)
51 if((pts = ptsname(m)) == NULL)
53 if((s = open(pts, O_RDWR | O_NOCTTY)) < 0)
55 fcntl(s, F_SETFL, O_NDELAY);
56 switch(pid = fork()) {
61 setsid(); /* create a new process group */
62 dup2(s, STDIN_FILENO);
63 dup2(s, STDOUT_FILENO);
64 dup2(s, STDERR_FILENO);
65 if(ioctl(s, TIOCSCTTY, NULL) < 0)
66 die("slave TTIOCSTTY");
78 fprintf(stderr, " %02x %c ", c, isprint(c)?c:'.');
80 fprintf(stderr, "\n");
85 char buf[BUFSIZ] = {0};
88 switch(ret = read(cmdfd, buf, BUFSIZ)) {
89 case -1: /* error or exit */
90 /* XXX: be more precise */
99 ttywrite(char *s, size_t n) {
100 if(write(cmdfd, s, n) == -1)
101 die("write error on tty.");
105 ttyresize(int x, int y) {
110 w.ws_xpixel = w.ws_ypixel = 0;
111 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
112 fprintf(stderr, "Couldn't set window size: %m\n");
128 else if(BETWEEN(c, 0x40, 0x7E))
139 x = term.c.x, y = term.c.y;
140 else if(mode == CSload)
145 tnew(int col, int row) { /* screen size */
146 term.row = row, term.col = col;
147 term.top = 0, term.bot = term.row - 1;
151 term.c.attr.mode = ATnone;
152 term.c.attr.fg = DefaultFG;
153 term.c.attr.bg = DefaultBG;
154 term.c.x = term.c.y = 0;
156 /* allocate screen */
157 term.line = calloc(term.row, sizeof(Line));
158 for(row = 0 ; row < term.row; row++)
159 term.line[row] = calloc(term.col, sizeof(Glyph));
164 Line temp = term.line[term.top];
167 for(i = term.top; i < term.bot; i++)
168 term.line[i] = term.line[i+1];
169 memset(temp, 0, sizeof(Glyph) * term.col);
170 term.line[term.bot] = temp;
176 int y = term.c.y + 1;
179 tscroll(), y = term.bot;
186 escseq.buf[escseq.len++] = c;
187 if(escfinal(c) || escseq.len >= ESCSIZ) {
188 escparse(), eschandle();
197 char *p = escseq.buf;
200 switch(escseq.pre = *p++) {
203 escseq.priv = 1, p++;
205 while(p < escseq.buf+escseq.len) {
207 escseq.arg[escseq.narg] *= 10;
208 escseq.arg[escseq.narg] += *(p++) - '0'/*, noarg = 0 */;
220 /* humf charset stuff */
226 tmoveto(int x, int y) {
227 term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
228 term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
233 int xi = term.c.x, yi = term.c.y;
234 int xf = xi, yf = yi;
246 xf = term.col-1, yf--;
248 yf = term.top, xf = 0;
256 yf = term.bot, tscroll();
265 term.line[term.c.y][term.c.x] = term.c.attr;
266 term.line[term.c.y][term.c.x].c = c;
267 term.line[term.c.y][term.c.x].state |= CRset | CRupdate;
271 tclearregion(int x1, int y1, int x2, int y2) {
274 LIMIT(x1, 0, term.col-1);
275 LIMIT(x2, 0, term.col-1);
276 LIMIT(y1, 0, term.row-1);
277 LIMIT(y2, 0, term.row-1);
279 /* XXX: could be optimized */
280 for(x = x1; x <= x2; x++)
281 for(y = y1; y <= y2; y++)
282 memset(&term.line[y][x], 0, sizeof(Glyph));
284 xclear(x1, y1, x2, y2);
289 int src = term.c.x + n;
291 int size = term.col - src;
293 if(src >= term.col) {
294 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
297 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
298 tclearregion(term.col-size, term.c.y, term.col-1, term.c.y);
302 tinsertblank(int n) {
305 int size = term.col - n - src;
307 if(dst >= term.col) {
308 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
311 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
312 tclearregion(src, term.c.y, dst, term.c.y);
316 tinsertblankline (int n) {
321 if(term.c.y > term.bot)
323 else if(term.c.y < term.top)
325 if(term.c.y + n >= bot) {
326 tclearregion(0, term.c.y, term.col-1, bot);
329 for(i = bot; i >= term.c.y+n; i--) {
330 /* swap deleted line <-> blanked line */
331 blank = term.line[i];
332 term.line[i] = term.line[i-n];
333 term.line[i-n] = blank;
335 memset(blank, 0, term.col * sizeof(Glyph));
346 if(term.c.y > term.bot)
348 else if(term.c.y < term.top)
350 if(term.c.y + n >= bot) {
351 tclearregion(0, term.c.y, term.col-1, bot);
354 for(i = term.c.y; i <= bot-n; i++) {
355 /* swap deleted line <-> blanked line */
356 blank = term.line[i];
357 term.line[i] = term.line[i+n];
358 term.line[i+n] = blank;
360 memset(blank, 0, term.col * sizeof(Glyph));
365 tsetattr(int *attr, int l) {
368 #ifdef TRUECOLOR /* ESC [ ? <fg/bg> ; <r> ; <g> ; <b> m */
370 if(escseq.priv && escseq.len == 4) { /* True color extension :) */
371 col = (escseq.arg[1]<<16) + (escseq.arg[2]<<8) + escseq.arg[3];
372 switch(escseq.arg[0]) {
373 case 3: /* foreground */
374 term.c.attr.fg = col;
376 case 4: /* background */
377 term.c.attr.bg = col;
383 for(i = 0; i < l; i++) {
386 memset(&term.c.attr, 0, sizeof(term.c.attr));
387 term.c.attr.fg = DefaultFG;
388 term.c.attr.bg = DefaultBG;
391 term.c.attr.mode |= ATbold;
394 term.c.attr.mode |= ATunderline;
397 term.c.attr.mode |= ATreverse;
400 term.c.hidden = CShide;
403 term.c.attr.mode &= ~ATbold;
406 term.c.attr.mode &= ~ATunderline;
409 term.c.attr.mode &= ~ATreverse;
412 term.c.attr.fg = DefaultFG;
415 term.c.attr.fg = DefaultBG;
418 if(BETWEEN(attr[i], 30, 37))
419 term.c.attr.fg = attr[i] - 30;
420 else if(BETWEEN(attr[i], 40, 47))
421 term.c.attr.bg = attr[i] - 40;
428 tsetscroll(int t, int b) {
431 LIMIT(t, 0, term.row-1);
432 LIMIT(b, 0, term.row-1);
448 switch(escseq.mode) {
449 case '@': /* Insert <n> blank char */
450 DEFAULT(escseq.arg[0], 1);
451 tinsertblank(escseq.arg[0]);
453 case 'A': /* Cursor <n> Up */
455 DEFAULT(escseq.arg[0], 1);
456 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
458 case 'B': /* Cursor <n> Down */
459 DEFAULT(escseq.arg[0], 1);
460 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
462 case 'C': /* Cursor <n> Forward */
464 DEFAULT(escseq.arg[0], 1);
465 tmoveto(term.c.x+escseq.arg[0], term.c.y);
467 case 'D': /* Cursor <n> Backward */
468 DEFAULT(escseq.arg[0], 1);
469 tmoveto(term.c.x-escseq.arg[0], term.c.y);
471 case 'E': /* Cursor <n> Down and first col */
472 DEFAULT(escseq.arg[0], 1);
473 tmoveto(0, term.c.y+escseq.arg[0]);
475 case 'F': /* Cursor <n> Up and first col */
476 DEFAULT(escseq.arg[0], 1);
477 tmoveto(0, term.c.y-escseq.arg[0]);
479 case 'G': /* Move to <col> */
481 DEFAULT(escseq.arg[0], 1);
482 tmoveto(escseq.arg[0]-1, term.c.y);
484 case 'H': /* Move to <row> <col> */
486 DEFAULT(escseq.arg[0], 1);
487 DEFAULT(escseq.arg[1], 1);
488 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
490 case 'J': /* Clear screen */
491 switch(escseq.arg[0]) {
493 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
496 tclearregion(0, 0, term.c.x, term.c.y);
499 tclearregion(0, 0, term.col-1, term.row-1);
503 case 'K': /* Clear line */
504 switch(escseq.arg[0]) {
506 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
509 tclearregion(0, term.c.y, term.c.x, term.c.y);
512 tclearregion(0, term.c.y, term.col-1, term.c.y);
516 case 'L': /* Insert <n> blank lines */
517 DEFAULT(escseq.arg[0], 1);
518 tinsertblankline(escseq.arg[0]);
520 case 'M': /* Delete <n> lines */
521 DEFAULT(escseq.arg[0], 1);
522 tdeleteline(escseq.arg[0]);
524 case 'P': /* Delete <n> char */
525 DEFAULT(escseq.arg[0], 1);
526 tdeletechar(escseq.arg[0]);
528 case 'd': /* Move to <row> */
529 DEFAULT(escseq.arg[0], 1);
530 tmoveto(term.c.x, escseq.arg[0]-1);
532 case 'h': /* Set terminal mode */
534 case 'm': /* Terminal attribute (color) */
535 tsetattr(escseq.arg, escseq.narg);
541 DEFAULT(escseq.arg[0], 1);
542 DEFAULT(escseq.arg[1], term.row);
543 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
546 case 's': /* Save cursor position */
549 case 'u': /* Load cursor position */
561 printf("rawbuf : %s\n", escseq.buf);
562 printf("prechar : %c\n", escseq.pre);
563 printf("private : %c\n", escseq.priv ? '?' : ' ');
564 printf("narg : %d\n", escseq.narg);
566 for(i = 0; i < escseq.narg; i++)
567 printf("\targ %d = %d\n", i, escseq.arg[i]);
569 printf("mode : %c\n", escseq.mode);
574 memset(&escseq, 0, sizeof(escseq));
579 static int inesc = 0;
582 /* start of escseq */
584 escreset(), inesc = 1;
597 tmoveto(0, term.c.y);
609 tputs(char *s, int len) {
610 for(; len > 0; len--)
619 for(row = 0; row < term.row; row++) {
620 for(col = 0; col < term.col; col++) {
621 if(col == term.c.x && row == term.c.y)
624 c = term.line[row][col];
625 putchar(c.state & CRset ? c.c : '.');
633 tresize(int col, int row) {
636 int minrow = MIN(row, term.row);
637 int mincol = MIN(col, term.col);
639 if(col < 1 || row < 1)
641 line = calloc(row, sizeof(Line));
642 for(i = 0 ; i < row; i++)
643 line[i] = calloc(col, sizeof(Glyph));
644 for(i = 0 ; i < minrow; i++) {
645 memcpy(line[i], term.line[i], mincol * sizeof(Glyph));
649 LIMIT(term.c.x, 0, col-1);
650 LIMIT(term.c.y, 0, row-1);
651 LIMIT(term.top, 0, row-1);
652 LIMIT(term.bot, 0, row-1);
653 // if(term.bot == term.row-1)
656 term.col = col, term.row = row;
660 xgetcol(const char *s) {
662 Colormap cmap = DefaultColormap(xw.dis, xw.scr);
664 if(!XAllocNamedColor(xw.dis, cmap, s, &color, &color)) {
665 color.pixel = WhitePixel(xw.dis, xw.scr);
666 fprintf(stderr, "Could not allocate color '%s'\n", s);
673 xclear(int x1, int y1, int x2, int y2) {
674 XClearArea(xw.dis, xw.win,
675 x1 * xw.cw, y1 * xw.ch,
676 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch,
683 int srcy = (term.top+1) * xw.ch;
684 int dsty = term.top * xw.ch;
685 int height = (term.bot-term.top) * xw.ch;
688 XCopyArea(xw.dis, xw.win, xw.win, dc.gc, 0, srcy, xw.w, height, 0, dsty);
689 xclear(0, term.bot, term.col-1, term.bot);
698 unsigned long valuemask;
702 char *args[] = {NULL};
705 xw.dis = XOpenDisplay(NULL);
706 xw.scr = XDefaultScreen(xw.dis);
708 dc.font = XLoadQueryFont(xw.dis, FONT);
709 xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
710 xw.ch = dc.font->ascent + dc.font->descent + LINESPACE;
712 for(i = 0; i < LEN(colorname); i++)
713 dc.col[i] = xgetcol(colorname[i]);
714 term.c.attr.fg = DefaultFG;
715 term.c.attr.bg = DefaultBG;
716 term.c.attr.mode = ATnone;
718 xw.h = term.row * xw.ch;
719 xw.w = term.col * xw.cw;
720 /* XXX: this BORDER is useless after the first resize, handle it in xdraws() */
721 xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
726 values.foreground = XWhitePixel(xw.dis, xw.scr);
727 values.font = dc.font->fid;
728 valuemask = GCForeground | GCFont;
729 dc.gc = XCreateGC(xw.dis, xw.win, valuemask, &values);
730 XMapWindow(xw.dis, xw.win);
732 chint.res_name = TNAME, chint.res_class = TNAME;
733 wmhint.input = 1, wmhint.flags = InputHint;
734 shint.height_inc = xw.ch, shint.width_inc = xw.cw;
735 shint.height = xw.h, shint.width = xw.w;
736 shint.flags = PSize | PResizeInc;
737 XSetWMProperties(xw.dis, xw.win, NULL, NULL, &args[0], 0, &shint, &wmhint, &chint);
738 XStoreName(xw.dis, xw.win, TNAME);
743 xdrawc(int x, int y, Glyph g) {
744 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
745 unsigned long xfg, xbg;
748 if(g.mode & ATreverse)
749 xfg = dc.col[g.bg], xbg = dc.col[g.fg];
751 xfg = dc.col[g.fg], xbg = dc.col[g.bg];
753 XSetForeground(xw.dis, dc.gc, xbg);
754 XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
756 XSetForeground(xw.dis, dc.gc, xfg);
757 XDrawString(xw.dis, xw.win, dc.gc, r.x, r.y+dc.font->ascent, &(g.c), 1);
758 if(g.mode & ATbold) /* XXX: bold hack (draw again at x+1) */
759 XDrawString(xw.dis, xw.win, dc.gc, r.x+1, r.y+dc.font->ascent, &(g.c), 1);
761 if(g.mode & ATunderline) {
762 r.y += dc.font->ascent + 1;
763 XDrawLine(xw.dis, xw.win, dc.gc, r.x, r.y, r.x+r.width-1, r.y);
771 Glyph g = {' ', ATnone, DefaultBG, DefaultCS, 0};
773 if(term.line[term.c.y][term.c.x].state & CRset)
774 g.c = term.line[term.c.y][term.c.x].c;
775 /* remove the old cursor */
776 if(term.line[oldy][oldx].state & CRset)
777 xdrawc(oldx, oldy, term.line[oldy][oldx]);
778 else xclear(oldx, oldy, oldx, oldy); /* XXX: maybe a bug */
779 if(mode == CSdraw && !term.c.hidden) {
780 xdrawc(term.c.x, term.c.y, g);
781 oldx = term.c.x, oldy = term.c.y;
787 draw(int redraw_all) {
792 XClearWindow(xw.dis, xw.win);
793 /* XXX: drawing could be optimised */
794 for(y = 0; y < term.row; y++) {
795 for(x = 0; x < term.col; x++) {
796 changed = term.line[y][x].state & CRupdate;
797 set = term.line[y][x].state & CRset;
798 if((changed && set) || (redraw_all && set)) {
799 term.line[y][x].state &= ~CRupdate;
800 xdrawc(x, y, term.line[y][x]);
808 kpress(XKeyEvent *e) {
815 meta = e->state & Mod4Mask;
816 shift = e->state & ShiftMask;
817 len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
819 buf[sizeof(buf)-1] = '\0';
828 printf("errkey: %d\n", (int)ksym);
835 sprintf(buf, "\033[%c", "DACB"[ksym - XK_Left]);
838 case XK_Delete: ttywrite(KEYDELETE, sizeof(KEYDELETE)-1); break;
839 case XK_Home: ttywrite( KEYHOME, sizeof( KEYHOME)-1); break;
840 case XK_End: ttywrite( KEYEND, sizeof( KEYEND)-1); break;
841 case XK_Prior: ttywrite( KEYPREV, sizeof( KEYPREV)-1); break;
842 case XK_Next: ttywrite( KEYNEXT, sizeof( KEYNEXT)-1); break;
844 /* XXX: paste X clipboard */
853 col = e->xconfigure.width / xw.cw;
854 row = e->xconfigure.height / xw.ch;
856 if(term.col != col && term.row != row) {
859 xw.w = e->xconfigure.width;
860 xw.h = e->xconfigure.height;
871 struct timeval tv = {0, 10000};
874 XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask);
875 XResizeWindow(xw.dis, xw.win, xw.w , xw.h); /* seems to fix the resize bug in wmii */
877 while(XPending(xw.dis)) {
878 XNextEvent(xw.dis, &ev);
888 case ConfigureNotify:
895 ret = select(cmdfd+1, &rfd, NULL, NULL, &tv);
897 fprintf(stderr, "select: %m\n");
902 if(FD_ISSET(cmdfd, &rfd)) {
910 main(int argc, char *argv[]) {
911 if(argc == 2 && !strncmp("-v", argv[1], 3))
912 die("st-"VERSION", © 2009 st engineers\n");
914 die("usage: st [-v]\n");
915 setlocale(LC_CTYPE, "");