1 /* See LICENSE for licence details. */
2 #define _XOPEN_SOURCE 600
13 #include <sys/ioctl.h>
14 #include <sys/select.h>
16 #include <sys/types.h>
19 #include <X11/Xatom.h>
21 #include <X11/Xutil.h>
22 #include <X11/cursorfont.h>
23 #include <X11/keysym.h>
27 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
29 #elif defined(__FreeBSD__) || defined(__DragonFly__)
34 "st-" VERSION ", (c) 2010 st engineers\n" \
35 "usage: st [-t title] [-c class] [-v] [-e cmd]\n"
38 #define ESC_TITLE_SIZ 256
39 #define ESC_BUF_SIZ 256
40 #define ESC_ARG_SIZ 16
41 #define DRAW_BUF_SIZ 1024
44 #define SERRNO strerror(errno)
45 #define MIN(a, b) ((a) < (b) ? (a) : (b))
46 #define MAX(a, b) ((a) < (b) ? (b) : (a))
47 #define LEN(a) (sizeof(a) / sizeof(a[0]))
48 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
49 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
50 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
51 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
52 #define IS_SET(flag) (term.mode & (flag))
54 /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
55 enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
56 enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT,
57 CURSOR_SAVE, CURSOR_LOAD };
58 enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
59 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
60 enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8,
62 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
63 enum { SCREEN_UPDATE, SCREEN_REDRAW };
64 enum { WIN_VISIBLE=1, WIN_REDRAW=2, WIN_FOCUSED=4 };
67 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
70 char c[UTF_SIZ]; /* character code */
71 char mode; /* attribute flags */
72 int fg; /* foreground */
73 int bg; /* background */
74 char state; /* state flags */
80 Glyph attr; /* current char attributes */
86 /* CSI Escape sequence structs */
87 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
89 char buf[ESC_BUF_SIZ]; /* raw string */
90 int len; /* raw string length */
93 int narg; /* nb of args */
97 /* Internal representation of the screen */
100 int col; /* nb col */
101 Line* line; /* screen */
102 Line* alt; /* alternate screen */
103 TCursor c; /* cursor */
104 int top; /* top scroll limit */
105 int bot; /* bottom scroll limit */
106 int mode; /* terminal mode flags */
107 int esc; /* escape state flags */
108 char title[ESC_TITLE_SIZ];
112 /* Purely graphic info */
121 int w; /* window width */
122 int h; /* window height */
123 int bufw; /* pixmap width */
124 int bufh; /* pixmap height */
125 int ch; /* char height */
126 int cw; /* char width */
127 char state; /* focus, redraw, visible */
135 /* Drawing Context */
137 unsigned long col[256];
148 /* TODO: use better name for vars... */
153 struct {int x, y;} b, e;
160 static void die(const char *errstr, ...);
161 static void draw(int);
162 static void execsh(void);
163 static void sigchld(int);
164 static void run(void);
166 static void csidump(void);
167 static void csihandle(void);
168 static void csiparse(void);
169 static void csireset(void);
171 static void tclearregion(int, int, int, int);
172 static void tcursor(int);
173 static void tdeletechar(int);
174 static void tdeleteline(int);
175 static void tinsertblank(int);
176 static void tinsertblankline(int);
177 static void tmoveto(int, int);
178 static void tnew(int, int);
179 static void tnewline(int);
180 static void tputtab(void);
181 static void tputc(char*);
182 static void treset(void);
183 static int tresize(int, int);
184 static void tscrollup(int, int);
185 static void tscrolldown(int, int);
186 static void tsetattr(int*, int);
187 static void tsetchar(char*);
188 static void tsetscroll(int, int);
189 static void tswapscreen(void);
191 static void ttynew(void);
192 static void ttyread(void);
193 static void ttyresize(int, int);
194 static void ttywrite(const char *, size_t);
196 static void xdraws(char *, Glyph, int, int, int, int);
197 static void xhints(void);
198 static void xclear(int, int, int, int);
199 static void xdrawcursor(void);
200 static void xinit(void);
201 static void xloadcols(void);
202 static void xseturgency(int);
203 static void xsetsel(char*);
204 static void xresize(int, int);
206 static void expose(XEvent *);
207 static void visibility(XEvent *);
208 static void unmap(XEvent *);
209 static char* kmap(KeySym);
210 static void kpress(XEvent *);
211 static void resize(XEvent *);
212 static void focus(XEvent *);
213 static void brelease(XEvent *);
214 static void bpress(XEvent *);
215 static void bmotion(XEvent *);
216 static void selnotify(XEvent *);
217 static void selrequest(XEvent *);
219 static void selinit(void);
220 static inline int selected(int, int);
221 static void selcopy(void);
222 static void selpaste(void);
224 static int utf8decode(char *, long *);
225 static int utf8encode(long *, char *);
226 static int utf8size(char *);
227 static int isfullutf8(char *, int);
229 static void (*handler[LASTEvent])(XEvent *) = {
231 [ConfigureNotify] = resize,
232 [VisibilityNotify] = visibility,
233 [UnmapNotify] = unmap,
237 [MotionNotify] = bmotion,
238 [ButtonPress] = bpress,
239 [ButtonRelease] = brelease,
240 [SelectionNotify] = selnotify,
241 [SelectionRequest] = selrequest,
248 static CSIEscape escseq;
251 static Selection sel;
252 static char **opt_cmd = NULL;
253 static char *opt_title = NULL;
254 static char *opt_class = NULL;
257 utf8decode(char *s, long *u) {
263 if(~c&B7) { /* 0xxxxxxx */
266 } else if((c&(B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
267 *u = c&(B4|B3|B2|B1|B0);
269 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
270 *u = c&(B3|B2|B1|B0);
272 } else if((c&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
277 for(i=n,++s; i>0; --i,++rtn,++s) {
279 if((c&(B7|B6)) != B7) /* 10xxxxxx */
282 *u |= c&(B5|B4|B3|B2|B1|B0);
284 if((n == 1 && *u < 0x80) ||
285 (n == 2 && *u < 0x800) ||
286 (n == 3 && *u < 0x10000) ||
287 (*u >= 0xD800 && *u <= 0xDFFF))
296 utf8encode(long *u, char *s) {
301 sp = (unsigned char*) s;
304 *sp = uc; /* 0xxxxxxx */
306 } else if(*u < 0x800) {
307 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
309 } else if(uc < 0x10000) {
310 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
312 } else if(uc <= 0x10FFFF) {
313 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
318 for(i=n,++sp; i>0; --i,++sp)
319 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
329 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
330 UTF-8 otherwise return 0 */
332 isfullutf8(char *s, int b) {
333 unsigned char *c1, *c2, *c3;
335 c1 = (unsigned char *) s;
336 c2 = (unsigned char *) ++s;
337 c3 = (unsigned char *) ++s;
340 else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
342 else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
344 ((b == 2) && (*c2&(B7|B6)) == B7)))
346 else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
348 ((b == 2) && (*c2&(B7|B6)) == B7) ||
349 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7)))
357 unsigned char c = *s;
361 else if ((c&(B7|B6|B5)) == (B7|B6))
363 else if ((c&(B7|B6|B5|B4)) == (B7|B6|B5))
374 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
375 if(sel.xtarget == None)
376 sel.xtarget = XA_STRING;
380 selected(int x, int y) {
381 if(sel.ey == y && sel.by == y) {
382 int bx = MIN(sel.bx, sel.ex);
383 int ex = MAX(sel.bx, sel.ex);
384 return BETWEEN(x, bx, ex);
386 return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
387 || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
391 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
393 *b = e->xbutton.button;
395 *x = e->xbutton.x/xw.cw;
396 *y = e->xbutton.y/xw.ch;
397 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
398 sel.b.y = MIN(sel.by, sel.ey);
399 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
400 sel.e.y = MAX(sel.by, sel.ey);
406 sel.ex = sel.bx = e->xbutton.x/xw.cw;
407 sel.ey = sel.by = e->xbutton.y/xw.ch;
413 int x, y, sz, sl, ls = 0;
418 sz = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
419 ptr = str = malloc(sz);
420 for(y = 0; y < term.row; y++) {
421 for(x = 0; x < term.col; x++)
422 if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y))) {
423 sl = utf8size(term.line[y][x].c);
424 memcpy(ptr, term.line[y][x].c, sl);
427 if(ls && y < sel.e.y)
436 selnotify(XEvent *e) {
437 unsigned long nitems;
438 unsigned long ofs, rem;
445 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
446 False, AnyPropertyType, &type, &format,
447 &nitems, &rem, &data)) {
448 fprintf(stderr, "Clipboard allocation failed\n");
451 ttywrite((const char *) data, nitems * format / 8);
453 /* number of 32-bit chunks returned */
454 ofs += nitems * format / 32;
460 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime);
464 selrequest(XEvent *e) {
465 XSelectionRequestEvent *xsre;
469 xsre = (XSelectionRequestEvent *) e;
470 xev.type = SelectionNotify;
471 xev.requestor = xsre->requestor;
472 xev.selection = xsre->selection;
473 xev.target = xsre->target;
474 xev.time = xsre->time;
478 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
479 if(xsre->target == xa_targets) {
480 /* respond with the supported type */
481 Atom string = sel.xtarget;
482 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
483 XA_ATOM, 32, PropModeReplace,
484 (unsigned char *) &string, 1);
485 xev.property = xsre->property;
486 } else if(xsre->target == XA_STRING) {
487 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
488 xsre->target, 8, PropModeReplace,
489 (unsigned char *) sel.clip, strlen(sel.clip));
490 xev.property = xsre->property;
493 /* all done, send a notification to the listener */
494 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
495 fprintf(stderr, "Error sending SelectionNotify event\n");
500 /* register the selection for both the clipboard and the primary */
506 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
508 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
509 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
514 /* TODO: doubleclick to select word */
516 brelease(XEvent *e) {
519 getbuttoninfo(e, &b, &sel.ex, &sel.ey);
520 if(sel.bx==sel.ex && sel.by==sel.ey) {
534 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
535 /* XXX: draw() can't keep up, disabled for now.
536 selection is visible on button release.
542 die(const char *errstr, ...) {
545 va_start(ap, errstr);
546 vfprintf(stderr, errstr, ap);
554 char *envshell = getenv("SHELL");
556 DEFAULT(envshell, "sh");
557 putenv("TERM="TNAME);
558 args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
559 execvp(args[0], args);
566 if(waitpid(pid, &stat, 0) < 0)
567 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
569 exit(WEXITSTATUS(stat));
578 /* seems to work fine on linux, openbsd and freebsd */
579 struct winsize w = {term.row, term.col, 0, 0};
580 if(openpty(&m, &s, NULL, NULL, &w) < 0)
581 die("openpty failed: %s\n", SERRNO);
583 switch(pid = fork()) {
585 die("fork failed\n");
588 setsid(); /* create a new process group */
589 dup2(s, STDIN_FILENO);
590 dup2(s, STDOUT_FILENO);
591 dup2(s, STDERR_FILENO);
592 if(ioctl(s, TIOCSCTTY, NULL) < 0)
593 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
601 signal(SIGCHLD, sigchld);
608 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
610 fprintf(stderr, "\n");
615 static char buf[BUFSIZ];
616 static int buflen = 0;
619 int charsize; /* size of utf8 char in bytes */
623 /* append read bytes to unprocessed bytes */
624 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
625 die("Couldn't read from shell: %s\n", SERRNO);
627 /* process every complete utf8 char */
630 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
631 charsize = utf8decode(ptr, &utf8c);
632 utf8encode(&utf8c, s);
638 /* keep any uncomplete utf8 char for the next call */
639 memmove(buf, ptr, buflen);
643 ttywrite(const char *s, size_t n) {
644 if(write(cmdfd, s, n) == -1)
645 die("write error on tty: %s\n", SERRNO);
649 ttyresize(int x, int y) {
654 w.ws_xpixel = w.ws_ypixel = 0;
655 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
656 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
663 if(mode == CURSOR_SAVE)
665 else if(mode == CURSOR_LOAD)
666 term.c = c, tmoveto(c.x, c.y);
675 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
677 term.top = 0, term.bot = term.row - 1;
678 term.mode = MODE_WRAP;
679 tclearregion(0, 0, term.col-1, term.row-1);
683 tnew(int col, int row) {
684 /* set screen size */
685 term.row = row, term.col = col;
686 term.line = malloc(term.row * sizeof(Line));
687 term.alt = malloc(term.row * sizeof(Line));
688 for(row = 0 ; row < term.row; row++) {
689 term.line[row] = malloc(term.col * sizeof(Glyph));
690 term.alt [row] = malloc(term.col * sizeof(Glyph));
698 Line* tmp = term.line;
699 term.line = term.alt;
701 term.mode ^= MODE_ALTSCREEN;
705 tscrolldown(int orig, int n) {
709 LIMIT(n, 0, term.bot-orig+1);
711 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
713 for(i = term.bot; i >= orig+n; i--) {
715 term.line[i] = term.line[i-n];
716 term.line[i-n] = temp;
721 tscrollup(int orig, int n) {
724 LIMIT(n, 0, term.bot-orig+1);
726 tclearregion(0, orig, term.col-1, orig+n-1);
728 for(i = orig; i <= term.bot-n; i++) {
730 term.line[i] = term.line[i+n];
731 term.line[i+n] = temp;
736 tnewline(int first_col) {
739 tscrollup(term.top, 1);
742 tmoveto(first_col ? 0 : term.c.x, y);
748 char *p = escseq.buf;
752 escseq.priv = 1, p++;
754 while(p < escseq.buf+escseq.len) {
756 escseq.arg[escseq.narg] *= 10;
757 escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
759 if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
770 tmoveto(int x, int y) {
771 LIMIT(x, 0, term.col-1);
772 LIMIT(y, 0, term.row-1);
773 term.c.state &= ~CURSOR_WRAPNEXT;
780 term.line[term.c.y][term.c.x] = term.c.attr;
781 memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
782 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
786 tclearregion(int x1, int y1, int x2, int y2) {
790 temp = x1, x1 = x2, x2 = temp;
792 temp = y1, y1 = y2, y2 = temp;
794 LIMIT(x1, 0, term.col-1);
795 LIMIT(x2, 0, term.col-1);
796 LIMIT(y1, 0, term.row-1);
797 LIMIT(y2, 0, term.row-1);
799 for(y = y1; y <= y2; y++)
800 for(x = x1; x <= x2; x++)
801 term.line[y][x].state = 0;
806 int src = term.c.x + n;
808 int size = term.col - src;
810 if(src >= term.col) {
811 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
814 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
815 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
819 tinsertblank(int n) {
822 int size = term.col - dst;
824 if(dst >= term.col) {
825 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
828 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
829 tclearregion(src, term.c.y, dst - 1, term.c.y);
833 tinsertblankline(int n) {
834 if(term.c.y < term.top || term.c.y > term.bot)
837 tscrolldown(term.c.y, n);
842 if(term.c.y < term.top || term.c.y > term.bot)
845 tscrollup(term.c.y, n);
849 tsetattr(int *attr, int l) {
852 for(i = 0; i < l; i++) {
855 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
856 term.c.attr.fg = DefaultFG;
857 term.c.attr.bg = DefaultBG;
860 term.c.attr.mode |= ATTR_BOLD;
863 term.c.attr.mode |= ATTR_UNDERLINE;
866 term.c.attr.mode |= ATTR_REVERSE;
869 term.c.attr.mode &= ~ATTR_BOLD;
872 term.c.attr.mode &= ~ATTR_UNDERLINE;
875 term.c.attr.mode &= ~ATTR_REVERSE;
878 if (i + 2 < l && attr[i + 1] == 5) {
880 if (BETWEEN(attr[i], 0, 255))
881 term.c.attr.fg = attr[i];
883 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
886 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
889 term.c.attr.fg = DefaultFG;
892 if (i + 2 < l && attr[i + 1] == 5) {
894 if (BETWEEN(attr[i], 0, 255))
895 term.c.attr.bg = attr[i];
897 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
900 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
903 term.c.attr.bg = DefaultBG;
906 if(BETWEEN(attr[i], 30, 37))
907 term.c.attr.fg = attr[i] - 30;
908 else if(BETWEEN(attr[i], 40, 47))
909 term.c.attr.bg = attr[i] - 40;
910 else if(BETWEEN(attr[i], 90, 97))
911 term.c.attr.fg = attr[i] - 90 + 8;
912 else if(BETWEEN(attr[i], 100, 107))
913 term.c.attr.fg = attr[i] - 100 + 8;
915 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]), csidump();
923 tsetscroll(int t, int b) {
926 LIMIT(t, 0, term.row-1);
927 LIMIT(b, 0, term.row-1);
939 switch(escseq.mode) {
942 fprintf(stderr, "erresc: unknown csi ");
946 case '@': /* ICH -- Insert <n> blank char */
947 DEFAULT(escseq.arg[0], 1);
948 tinsertblank(escseq.arg[0]);
950 case 'A': /* CUU -- Cursor <n> Up */
952 DEFAULT(escseq.arg[0], 1);
953 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
955 case 'B': /* CUD -- Cursor <n> Down */
956 DEFAULT(escseq.arg[0], 1);
957 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
959 case 'C': /* CUF -- Cursor <n> Forward */
961 DEFAULT(escseq.arg[0], 1);
962 tmoveto(term.c.x+escseq.arg[0], term.c.y);
964 case 'D': /* CUB -- Cursor <n> Backward */
965 DEFAULT(escseq.arg[0], 1);
966 tmoveto(term.c.x-escseq.arg[0], term.c.y);
968 case 'E': /* CNL -- Cursor <n> Down and first col */
969 DEFAULT(escseq.arg[0], 1);
970 tmoveto(0, term.c.y+escseq.arg[0]);
972 case 'F': /* CPL -- Cursor <n> Up and first col */
973 DEFAULT(escseq.arg[0], 1);
974 tmoveto(0, term.c.y-escseq.arg[0]);
976 case 'G': /* CHA -- Move to <col> */
977 case '`': /* XXX: HPA -- same? */
978 DEFAULT(escseq.arg[0], 1);
979 tmoveto(escseq.arg[0]-1, term.c.y);
981 case 'H': /* CUP -- Move to <row> <col> */
982 case 'f': /* XXX: HVP -- same? */
983 DEFAULT(escseq.arg[0], 1);
984 DEFAULT(escseq.arg[1], 1);
985 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
987 /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
988 case 'J': /* ED -- Clear screen */
989 switch(escseq.arg[0]) {
991 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
992 if(term.c.y < term.row-1)
993 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
997 tclearregion(0, 0, term.col-1, term.c.y-1);
998 tclearregion(0, term.c.y, term.c.x, term.c.y);
1001 tclearregion(0, 0, term.col-1, term.row-1);
1007 case 'K': /* EL -- Clear line */
1008 switch(escseq.arg[0]) {
1010 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1013 tclearregion(0, term.c.y, term.c.x, term.c.y);
1016 tclearregion(0, term.c.y, term.col-1, term.c.y);
1020 case 'S': /* SU -- Scroll <n> line up */
1021 DEFAULT(escseq.arg[0], 1);
1022 tscrollup(term.top, escseq.arg[0]);
1024 case 'T': /* SD -- Scroll <n> line down */
1025 DEFAULT(escseq.arg[0], 1);
1026 tscrolldown(term.top, escseq.arg[0]);
1028 case 'L': /* IL -- Insert <n> blank lines */
1029 DEFAULT(escseq.arg[0], 1);
1030 tinsertblankline(escseq.arg[0]);
1032 case 'l': /* RM -- Reset Mode */
1034 switch(escseq.arg[0]) {
1036 term.mode &= ~MODE_APPKEYPAD;
1038 case 5: /* TODO: DECSCNM -- Remove reverse video */
1041 term.mode &= ~MODE_WRAP;
1043 case 12: /* att610 -- Stop blinking cursor (IGNORED) */
1046 term.mode &= ~MODE_CRLF;
1049 term.c.state |= CURSOR_HIDE;
1051 case 1049: /* = 1047 and 1048 */
1053 if(IS_SET(MODE_ALTSCREEN)) {
1054 tclearregion(0, 0, term.col-1, term.row-1);
1057 if(escseq.arg[0] == 1047)
1060 tcursor(CURSOR_LOAD);
1066 switch(escseq.arg[0]) {
1068 term.mode &= ~MODE_INSERT;
1075 case 'M': /* DL -- Delete <n> lines */
1076 DEFAULT(escseq.arg[0], 1);
1077 tdeleteline(escseq.arg[0]);
1079 case 'X': /* ECH -- Erase <n> char */
1080 DEFAULT(escseq.arg[0], 1);
1081 tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
1083 case 'P': /* DCH -- Delete <n> char */
1084 DEFAULT(escseq.arg[0], 1);
1085 tdeletechar(escseq.arg[0]);
1087 /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
1088 case 'd': /* VPA -- Move to <row> */
1089 DEFAULT(escseq.arg[0], 1);
1090 tmoveto(term.c.x, escseq.arg[0]-1);
1092 case 'h': /* SM -- Set terminal mode */
1094 switch(escseq.arg[0]) {
1096 term.mode |= MODE_APPKEYPAD;
1098 case 5: /* DECSCNM -- Reverve video */
1099 /* TODO: set REVERSE on the whole screen (f) */
1102 term.mode |= MODE_WRAP;
1105 term.mode |= MODE_CRLF;
1107 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1108 /* fallthrough for xterm cvvis = CSI [ ? 12 ; 25 h */
1109 if(escseq.narg > 1 && escseq.arg[1] != 25)
1112 term.c.state &= ~CURSOR_HIDE;
1114 case 1049: /* = 1047 and 1048 */
1116 if(IS_SET(MODE_ALTSCREEN))
1117 tclearregion(0, 0, term.col-1, term.row-1);
1120 if(escseq.arg[0] == 1047)
1123 tcursor(CURSOR_SAVE);
1125 default: goto unknown;
1128 switch(escseq.arg[0]) {
1130 term.mode |= MODE_INSERT;
1132 default: goto unknown;
1136 case 'm': /* SGR -- Terminal attribute (color) */
1137 tsetattr(escseq.arg, escseq.narg);
1139 case 'r': /* DECSTBM -- Set Scrolling Region */
1143 DEFAULT(escseq.arg[0], 1);
1144 DEFAULT(escseq.arg[1], term.row);
1145 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
1149 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1150 tcursor(CURSOR_SAVE);
1152 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1153 tcursor(CURSOR_LOAD);
1161 printf("ESC [ %s", escseq.priv ? "? " : "");
1163 for(i = 0; i < escseq.narg; i++)
1164 printf("%d ", escseq.arg[i]);
1166 putchar(escseq.mode);
1172 memset(&escseq, 0, sizeof(escseq));
1177 int space = TAB - term.c.x % TAB;
1178 tmoveto(term.c.x + space, term.c.y);
1184 if(term.esc & ESC_START) {
1185 if(term.esc & ESC_CSI) {
1186 escseq.buf[escseq.len++] = ascii;
1187 if(BETWEEN(ascii, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
1189 csiparse(), csihandle();
1191 /* TODO: handle other OSC */
1192 } else if(term.esc & ESC_OSC) {
1195 term.esc = ESC_START | ESC_TITLE;
1197 } else if(term.esc & ESC_TITLE) {
1198 if(ascii == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
1200 term.title[term.titlelen] = '\0';
1201 XStoreName(xw.dpy, xw.win, term.title);
1203 term.title[term.titlelen++] = ascii;
1205 } else if(term.esc & ESC_ALTCHARSET) {
1207 case '0': /* Line drawing crap */
1208 term.c.attr.mode |= ATTR_GFX;
1210 case 'B': /* Back to regular text */
1211 term.c.attr.mode &= ~ATTR_GFX;
1214 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1220 term.esc |= ESC_CSI;
1223 term.esc |= ESC_OSC;
1226 term.esc |= ESC_ALTCHARSET;
1228 case 'D': /* IND -- Linefeed */
1229 if(term.c.y == term.bot)
1230 tscrollup(term.top, 1);
1232 tmoveto(term.c.x, term.c.y+1);
1235 case 'E': /* NEL -- Next line */
1236 tnewline(1); /* always go to first col */
1239 case 'M': /* RI -- Reverse index */
1240 if(term.c.y == term.top)
1241 tscrolldown(term.top, 1);
1243 tmoveto(term.c.x, term.c.y-1);
1246 case 'c': /* RIS -- Reset to inital state */
1250 case '=': /* DECPAM -- Application keypad */
1251 term.mode |= MODE_APPKEYPAD;
1254 case '>': /* DECPNM -- Normal keypad */
1255 term.mode &= ~MODE_APPKEYPAD;
1258 case '7': /* DECSC -- Save Cursor */
1259 tcursor(CURSOR_SAVE);
1262 case '8': /* DECRC -- Restore Cursor */
1263 tcursor(CURSOR_LOAD);
1267 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
1268 (unsigned char) ascii, isprint(ascii)?ascii:'.');
1278 tmoveto(term.c.x-1, term.c.y);
1281 tmoveto(0, term.c.y);
1286 /* go to first col if the mode is set */
1287 tnewline(IS_SET(MODE_CRLF));
1290 if(!(xw.state & WIN_FOCUSED))
1295 term.esc = ESC_START;
1298 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
1299 tnewline(1); /* always go to first col */
1301 if(term.c.x+1 < term.col)
1302 tmoveto(term.c.x+1, term.c.y);
1304 term.c.state |= CURSOR_WRAPNEXT;
1311 tresize(int col, int row) {
1313 int minrow = MIN(row, term.row);
1314 int mincol = MIN(col, term.col);
1315 int slide = term.c.y - row + 1;
1317 if(col < 1 || row < 1)
1320 /* free unneeded rows */
1323 /* slide screen to keep cursor where we expect it -
1324 * tscrollup would work here, but we can optimize to
1325 * memmove because we're freeing the earlier lines */
1326 for(/* i = 0 */; i < slide; i++) {
1330 memmove(term.line, term.line + slide, row * sizeof(Line));
1331 memmove(term.alt, term.alt + slide, row * sizeof(Line));
1333 for(i += row; i < term.row; i++) {
1338 /* resize to new height */
1339 term.line = realloc(term.line, row * sizeof(Line));
1340 term.alt = realloc(term.alt, row * sizeof(Line));
1342 /* resize each row to new width, zero-pad if needed */
1343 for(i = 0; i < minrow; i++) {
1344 term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
1345 term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
1346 for(x = mincol; x < col; x++) {
1347 term.line[i][x].state = 0;
1348 term.alt[i][x].state = 0;
1352 /* allocate any new rows */
1353 for(/* i == minrow */; i < row; i++) {
1354 term.line[i] = calloc(col, sizeof(Glyph));
1355 term.alt [i] = calloc(col, sizeof(Glyph));
1358 /* update terminal size */
1359 term.col = col, term.row = row;
1360 /* make use of the LIMIT in tmoveto */
1361 tmoveto(term.c.x, term.c.y);
1362 /* reset scrolling region */
1363 tsetscroll(0, row-1);
1368 xresize(int col, int row) {
1374 xw.bufw = MAX(1, col * xw.cw);
1375 xw.bufh = MAX(1, row * xw.ch);
1376 newbuf = XCreatePixmap(xw.dpy, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dpy, xw.scr));
1377 XCopyArea(xw.dpy, xw.buf, newbuf, dc.gc, 0, 0, xw.bufw, xw.bufh, 0, 0);
1378 XFreePixmap(xw.dpy, xw.buf);
1379 XSetForeground(xw.dpy, dc.gc, dc.col[DefaultBG]);
1381 XFillRectangle(xw.dpy, newbuf, dc.gc, oldw, 0,
1382 xw.bufw-oldw, MIN(xw.bufh, oldh));
1383 else if(xw.bufw < oldw && (BORDER > 0 || xw.w > xw.bufw))
1384 XClearArea(xw.dpy, xw.win, BORDER+xw.bufw, BORDER,
1385 xw.w-xw.bufh-BORDER, BORDER+MIN(xw.bufh, oldh),
1388 XFillRectangle(xw.dpy, newbuf, dc.gc, 0, oldh,
1389 xw.bufw, xw.bufh-oldh);
1390 else if(xw.bufh < oldh && (BORDER > 0 || xw.h > xw.bufh))
1391 XClearArea(xw.dpy, xw.win, BORDER, BORDER+xw.bufh,
1392 xw.w-2*BORDER, xw.h-xw.bufh-BORDER,
1401 unsigned long white = WhitePixel(xw.dpy, xw.scr);
1403 for(i = 0; i < 16; i++) {
1404 if (!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
1406 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1408 dc.col[i] = color.pixel;
1411 /* same colors as xterm */
1412 for(r = 0; r < 6; r++)
1413 for(g = 0; g < 6; g++)
1414 for(b = 0; b < 6; b++) {
1415 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1416 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1417 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1418 if (!XAllocColor(xw.dpy, xw.cmap, &color)) {
1420 fprintf(stderr, "Could not allocate color %d\n", i);
1422 dc.col[i] = color.pixel;
1426 for(r = 0; r < 24; r++, i++) {
1427 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1428 if (!XAllocColor(xw.dpy, xw.cmap, &color)) {
1430 fprintf(stderr, "Could not allocate color %d\n", i);
1432 dc.col[i] = color.pixel;
1437 xclear(int x1, int y1, int x2, int y2) {
1438 XSetForeground(xw.dpy, dc.gc, dc.col[DefaultBG]);
1439 XFillRectangle(xw.dpy, xw.buf, dc.gc,
1440 x1 * xw.cw, y1 * xw.ch,
1441 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1447 XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
1448 XWMHints wm = {.flags = InputHint, .input = 1};
1450 .flags = PSize | PResizeInc | PBaseSize,
1453 .height_inc = xw.ch,
1455 .base_height = 2*BORDER,
1456 .base_width = 2*BORDER,
1458 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
1462 xinitfont(char *fontstr)
1465 char *def, **missing;
1469 set = XCreateFontSet(xw.dpy, fontstr, &missing, &n, &def);
1472 fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
1473 XFreeStringList(missing);
1479 xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing)
1481 XFontStruct **xfonts;
1485 *ascent = *descent = *lbearing = *rbearing = 0;
1486 n = XFontsOfFontSet(set, &xfonts, &font_names);
1487 for(i = 0; i < n; i++) {
1488 *ascent = MAX(*ascent, (*xfonts)->ascent);
1489 *descent = MAX(*descent, (*xfonts)->descent);
1490 *lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
1491 *rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
1497 initfonts(char *fontstr, char *bfontstr)
1499 if((dc.font.set = xinitfont(fontstr)) == NULL ||
1500 (dc.bfont.set = xinitfont(bfontstr)) == NULL)
1501 die("Can't load font %s\n", dc.font.set ? BOLDFONT : FONT);
1502 xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
1503 &dc.font.lbearing, &dc.font.rbearing);
1504 xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
1505 &dc.bfont.lbearing, &dc.bfont.rbearing);
1510 XSetWindowAttributes attrs;
1513 if(!(xw.dpy = XOpenDisplay(NULL)))
1514 die("Can't open display\n");
1515 xw.scr = XDefaultScreen(xw.dpy);
1518 initfonts(FONT, BOLDFONT);
1520 /* XXX: Assuming same size for bold font */
1521 xw.cw = dc.font.rbearing - dc.font.lbearing;
1522 xw.ch = dc.font.ascent + dc.font.descent;
1525 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1528 /* window - default size */
1529 xw.bufh = 24 * xw.ch;
1530 xw.bufw = 80 * xw.cw;
1531 xw.h = xw.bufh + 2*BORDER;
1532 xw.w = xw.bufw + 2*BORDER;
1534 attrs.background_pixel = dc.col[DefaultBG];
1535 attrs.border_pixel = dc.col[DefaultBG];
1536 attrs.bit_gravity = NorthWestGravity;
1537 attrs.event_mask = FocusChangeMask | KeyPressMask
1538 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1539 | PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
1540 attrs.colormap = xw.cmap;
1542 xw.win = XCreateWindow(xw.dpy, XRootWindow(xw.dpy, xw.scr), 0, 0,
1543 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1544 XDefaultVisual(xw.dpy, xw.scr),
1545 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
1548 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dpy, xw.scr));
1552 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
1553 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
1554 | XIMStatusNothing, XNClientWindow, xw.win,
1555 XNFocusWindow, xw.win, NULL);
1557 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
1559 /* white cursor, black outline */
1560 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
1561 XDefineCursor(xw.dpy, xw.win, cursor);
1562 XRecolorCursor(xw.dpy, cursor,
1563 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
1564 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
1566 XMapWindow(xw.dpy, xw.win);
1568 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
1573 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
1574 unsigned long xfg, xbg;
1575 int winx = x*xw.cw, winy = y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
1578 if(base.mode & ATTR_REVERSE)
1579 xfg = dc.col[base.bg], xbg = dc.col[base.fg];
1581 xfg = dc.col[base.fg], xbg = dc.col[base.bg];
1583 XSetBackground(xw.dpy, dc.gc, xbg);
1584 XSetForeground(xw.dpy, dc.gc, xfg);
1586 if(base.mode & ATTR_GFX) {
1587 for(i = 0; i < bytelen; i++) {
1588 char c = gfx[(unsigned int)s[i] % 256];
1591 else if(s[i] > 0x5f)
1596 XmbDrawImageString(xw.dpy, xw.buf, base.mode & ATTR_BOLD ? dc.bfont.set : dc.font.set,
1597 dc.gc, winx, winy, s, bytelen);
1599 if(base.mode & ATTR_UNDERLINE)
1600 XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
1605 static int oldx = 0;
1606 static int oldy = 0;
1608 Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
1610 LIMIT(oldx, 0, term.col-1);
1611 LIMIT(oldy, 0, term.row-1);
1613 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
1614 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
1616 /* remove the old cursor */
1617 if(term.line[oldy][oldx].state & GLYPH_SET) {
1618 sl = utf8size(term.line[oldy][oldx].c);
1619 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
1621 xclear(oldx, oldy, oldx, oldy);
1623 /* draw the new one */
1624 if(!(term.c.state & CURSOR_HIDE) && (xw.state & WIN_FOCUSED)) {
1626 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
1627 oldx = term.c.x, oldy = term.c.y;
1632 /* basic drawing routines */
1634 xdrawc(int x, int y, Glyph g) {
1635 int sl = utf8size(g.c);
1636 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
1637 XSetBackground(xw.dpy, dc.gc, dc.col[g.bg]);
1638 XSetForeground(xw.dpy, dc.gc, dc.col[g.fg]);
1639 XmbDrawImageString(xw.dpy, xw.buf, g.mode&ATTR_BOLD?dc.bfont.fs:dc.font.fs,
1640 dc.gc, r.x, r.y+dc.font.ascent, g.c, sl);
1647 xclear(0, 0, term.col-1, term.row-1);
1648 for(y = 0; y < term.row; y++)
1649 for(x = 0; x < term.col; x++)
1650 if(term.line[y][x].state & GLYPH_SET)
1651 xdrawc(x, y, term.line[y][x]);
1654 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1659 /* optimized drawing routine */
1661 draw(int redraw_all) {
1662 int ic, ib, x, y, ox, sl;
1664 char buf[DRAW_BUF_SIZ];
1666 if(!(xw.state & WIN_VISIBLE))
1669 xclear(0, 0, term.col-1, term.row-1);
1670 for(y = 0; y < term.row; y++) {
1671 base = term.line[y][0];
1673 for(x = 0; x < term.col; x++) {
1674 new = term.line[y][x];
1675 if(sel.bx!=-1 && *(new.c) && selected(x, y))
1676 new.mode ^= ATTR_REVERSE;
1677 if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
1678 ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
1679 xdraws(buf, base, ox, y, ic, ib);
1682 if(new.state & GLYPH_SET) {
1687 sl = utf8size(new.c);
1688 memcpy(buf+ib, new.c, sl);
1694 xdraws(buf, base, ox, y, ic, ib);
1697 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1703 expose(XEvent *ev) {
1704 XExposeEvent *e = &ev->xexpose;
1705 if(xw.state & WIN_REDRAW) {
1707 xw.state &= ~WIN_REDRAW;
1708 draw(SCREEN_REDRAW);
1711 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, e->x-BORDER, e->y-BORDER,
1712 e->width, e->height, e->x, e->y);
1716 visibility(XEvent *ev) {
1717 XVisibilityEvent *e = &ev->xvisibility;
1718 if(e->state == VisibilityFullyObscured)
1719 xw.state &= ~WIN_VISIBLE;
1720 else if(!(xw.state & WIN_VISIBLE))
1721 /* need a full redraw for next Expose, not just a buf copy */
1722 xw.state |= WIN_VISIBLE | WIN_REDRAW;
1727 xw.state &= ~WIN_VISIBLE;
1731 xseturgency(int add) {
1732 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1733 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
1734 XSetWMHints(xw.dpy, xw.win, h);
1740 if(ev->type == FocusIn) {
1741 xw.state |= WIN_FOCUSED;
1744 xw.state &= ~WIN_FOCUSED;
1745 draw(SCREEN_UPDATE);
1751 for(i = 0; i < LEN(key); i++)
1753 return (char*)key[i].s;
1758 kpress(XEvent *ev) {
1759 XKeyEvent *e = &ev->xkey;
1768 meta = e->state & Mod1Mask;
1769 shift = e->state & ShiftMask;
1770 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
1772 /* 1. custom keys from config.h */
1773 if((customkey = kmap(ksym)))
1774 ttywrite(customkey, strlen(customkey));
1775 /* 2. hardcoded (overrides X lookup) */
1782 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', "DACB"[ksym - XK_Left]);
1790 if(IS_SET(MODE_CRLF))
1791 ttywrite("\r\n", 2);
1798 if(meta && len == 1)
1799 ttywrite("\033", 1);
1810 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
1813 xw.w = e->xconfigure.width;
1814 xw.h = e->xconfigure.height;
1815 col = (xw.w - 2*BORDER) / xw.cw;
1816 row = (xw.h - 2*BORDER) / xw.ch;
1817 if(col == term.col && row == term.row)
1819 if(tresize(col, row))
1820 draw(SCREEN_REDRAW);
1821 ttyresize(col, row);
1829 int xfd = XConnectionNumber(xw.dpy);
1833 FD_SET(cmdfd, &rfd);
1835 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) < 0) {
1838 die("select failed: %s\n", SERRNO);
1840 if(FD_ISSET(cmdfd, &rfd)) {
1842 draw(SCREEN_UPDATE);
1844 while(XPending(xw.dpy)) {
1845 XNextEvent(xw.dpy, &ev);
1846 if (XFilterEvent(&ev, xw.win))
1848 if(handler[ev.type])
1849 (handler[ev.type])(&ev);
1855 main(int argc, char *argv[]) {
1858 for(i = 1; i < argc; i++) {
1859 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
1861 if(++i < argc) opt_title = argv[i];
1864 if(++i < argc) opt_class = argv[i];
1867 if(++i < argc) opt_cmd = &argv[i];
1873 /* -e eats every remaining arguments */
1877 setlocale(LC_CTYPE, "");