dmenu.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <ctype.h>
   3 #include <locale.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <strings.h>
   8 #include <time.h>
   9
  10 #include <X11/Xlib.h>
  11 #include <X11/Xatom.h>
  12 #include <X11/Xutil.h>
  13 #ifdef XINERAMA
  14 #include <X11/extensions/Xinerama.h>
  15 #endif
  16 #include <X11/Xft/Xft.h>
  17
  18 #include "drw.h"
  19 #include "util.h"
  20
  21 /* macros */
  22 #define INTERSECT(x,y,w,h,r)  (MAX(0, MIN((x)+(w),(r).x_org+(r).width)  - MAX((x),(r).x_org)) \
  23                              * MAX(0, MIN((y)+(h),(r).y_org+(r).height) - MAX((y),(r).y_org)))
  24 #define LENGTH(X)             (sizeof X / sizeof X[0])
  25 #define TEXTW(X)              (drw_fontset_getwidth(drw, (X)) + lrpad)
  26
  27 /* enums */
  28 enum { SchemeNorm, SchemeSel, SchemeOut, SchemeLast }; /* color schemes */
  29
  30 struct item {
  31         char *text;
  32         struct item *left, *right;
  33         int out;
  34 };
  35
  36 static char text[BUFSIZ] = "";
  37 static char *embed;
  38 static int bh, mw, mh;
  39 static int inputw = 0, promptw;
  40 static int lrpad; /* sum of left and right padding */
  41 static size_t cursor;
  42 static struct item *items = NULL;
  43 static struct item *matches, *matchend;
  44 static struct item *prev, *curr, *next, *sel;
  45 static int mon = -1, screen;
  46
  47 static Atom clip, utf8;
  48 static Display *dpy;
  49 static Window root, parentwin, win;
  50 static XIC xic;
  51
  52 static Drw *drw;
  53 static Clr *scheme[SchemeLast];
  54
  55 #include "config.h"
  56
  57 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
  58 static char *(*fstrstr)(const char *, const char *) = strstr;
  59
  60 static void
  61 appenditem(struct item *item, struct item **list, struct item **last)
  62 {
  63         if (*last)
  64                 (*last)->right = item;
  65         else
  66                 *list = item;
  67
  68         item->left = *last;
  69         item->right = NULL;
  70         *last = item;
  71 }
  72
  73 static void
  74 calcoffsets(void)
  75 {
  76         int i, n;
  77
  78         if (lines > 0)
  79                 n = lines * bh;
  80         else
  81                 n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
  82         /* calculate which items will begin the next page and previous page */
  83         for (i = 0, next = curr; next; next = next->right)
  84                 if ((i += (lines > 0) ? bh : MIN(TEXTW(next->text), n)) > n)
  85                         break;
  86         for (i = 0, prev = curr; prev && prev->left; prev = prev->left)
  87                 if ((i += (lines > 0) ? bh : MIN(TEXTW(prev->left->text), n)) > n)
  88                         break;
  89 }
  90
  91 static void
  92 cleanup(void)
  93 {
  94         size_t i;
  95
  96         XUngrabKey(dpy, AnyKey, AnyModifier, root);
  97         for (i = 0; i < SchemeLast; i++)
  98                 free(scheme[i]);
  99         drw_free(drw);
 100         XSync(dpy, False);
 101         XCloseDisplay(dpy);
 102 }
 103
 104 static char *
 105 cistrstr(const char *s, const char *sub)
 106 {
 107         size_t len;
 108
 109         for (len = strlen(sub); *s; s++)
 110                 if (!strncasecmp(s, sub, len))
 111                         return (char *)s;
 112         return NULL;
 113 }
 114
 115 static int
 116 drawitem(struct item *item, int x, int y, int w)
 117 {
 118         if (item == sel)
 119                 drw_setscheme(drw, scheme[SchemeSel]);
 120         else if (item->out)
 121                 drw_setscheme(drw, scheme[SchemeOut]);
 122         else
 123                 drw_setscheme(drw, scheme[SchemeNorm]);
 124
 125         return drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
 126 }
 127
 128 static void
 129 drawmenu(void)
 130 {
 131         unsigned int curpos;
 132         struct item *item;
 133         int x = 0, y = 0, w;
 134
 135         drw_setscheme(drw, scheme[SchemeNorm]);
 136         drw_rect(drw, 0, 0, mw, mh, 1, 1);
 137
 138         if (prompt && *prompt) {
 139                 drw_setscheme(drw, scheme[SchemeSel]);
 140                 x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
 141         }
 142         /* draw input field */
 143         w = (lines > 0 || !matches) ? mw - x : inputw;
 144         drw_setscheme(drw, scheme[SchemeNorm]);
 145         drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 146
 147         drw_font_getexts(drw->fonts, text, cursor, &curpos, NULL);
 148         if ((curpos += lrpad / 2 - 1) < w) {
 149                 drw_setscheme(drw, scheme[SchemeNorm]);
 150                 drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
 151         }
 152
 153         if (lines > 0) {
 154                 /* draw vertical list */
 155                 for (item = curr; item != next; item = item->right)
 156                         drawitem(item, x, y += bh, mw - x);
 157         } else if (matches) {
 158                 /* draw horizontal list */
 159                 x += inputw;
 160                 w = TEXTW("<");
 161                 if (curr->left) {
 162                         drw_setscheme(drw, scheme[SchemeNorm]);
 163                         drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
 164                 }
 165                 x += w;
 166                 for (item = curr; item != next; item = item->right)
 167                         x = drawitem(item, x, 0, MIN(TEXTW(item->text), mw - x - TEXTW(">")));
 168                 if (next) {
 169                         w = TEXTW(">");
 170                         drw_setscheme(drw, scheme[SchemeNorm]);
 171                         drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
 172                 }
 173         }
 174         drw_map(drw, win, 0, 0, mw, mh);
 175 }
 176
 177 static void
 178 grabfocus(void)
 179 {
 180         struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000  };
 181         Window focuswin;
 182         int i, revertwin;
 183
 184         for (i = 0; i < 100; ++i) {
 185                 XGetInputFocus(dpy, &focuswin, &revertwin);
 186                 if (focuswin == win)
 187                         return;
 188                 XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
 189                 nanosleep(&ts, NULL);
 190         }
 191         die("cannot grab focus");
 192 }
 193
 194 static void
 195 grabkeyboard(void)
 196 {
 197         struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000  };
 198         int i;
 199
 200         if (embed)
 201                 return;
 202         /* try to grab keyboard, we may have to wait for another process to ungrab */
 203         for (i = 0; i < 1000; i++) {
 204                 if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
 205                                   GrabModeAsync, CurrentTime) == GrabSuccess)
 206                         return;
 207                 nanosleep(&ts, NULL);
 208         }
 209         die("cannot grab keyboard");
 210 }
 211
 212 static void
 213 match(void)
 214 {
 215         static char **tokv = NULL;
 216         static int tokn = 0;
 217
 218         char buf[sizeof text], *s;
 219         int i, tokc = 0;
 220         size_t len, textsize;
 221         struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
 222
 223         strcpy(buf, text);
 224         /* separate input text into tokens to be matched individually */
 225         for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
 226                 if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
 227                         die("cannot realloc %u bytes:", tokn * sizeof *tokv);
 228         len = tokc ? strlen(tokv[0]) : 0;
 229
 230         matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
 231         textsize = strlen(text) + 1;
 232         for (item = items; item && item->text; item++) {
 233                 for (i = 0; i < tokc; i++)
 234                         if (!fstrstr(item->text, tokv[i]))
 235                                 break;
 236                 if (i != tokc) /* not all tokens match */
 237                         continue;
 238                 /* exact matches go first, then prefixes, then substrings */
 239                 if (!tokc || !fstrncmp(text, item->text, textsize))
 240                         appenditem(item, &matches, &matchend);
 241                 else if (!fstrncmp(tokv[0], item->text, len))
 242                         appenditem(item, &lprefix, &prefixend);
 243                 else
 244                         appenditem(item, &lsubstr, &substrend);
 245         }
 246         if (lprefix) {
 247                 if (matches) {
 248                         matchend->right = lprefix;
 249                         lprefix->left = matchend;
 250                 } else
 251                         matches = lprefix;
 252                 matchend = prefixend;
 253         }
 254         if (lsubstr) {
 255                 if (matches) {
 256                         matchend->right = lsubstr;
 257                         lsubstr->left = matchend;
 258                 } else
 259                         matches = lsubstr;
 260                 matchend = substrend;
 261         }
 262         curr = sel = matches;
 263         calcoffsets();
 264 }
 265
 266 static void
 267 insert(const char *str, ssize_t n)
 268 {
 269         if (strlen(text) + n > sizeof text - 1)
 270                 return;
 271         /* move existing text out of the way, insert new text, and update cursor */
 272         memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
 273         if (n > 0)
 274                 memcpy(&text[cursor], str, n);
 275         cursor += n;
 276         match();
 277 }
 278
 279 static size_t
 280 nextrune(int inc)
 281 {
 282         ssize_t n;
 283
 284         /* return location of next utf8 rune in the given direction (+1 or -1) */
 285         for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
 286                 ;
 287         return n;
 288 }
 289
 290 static void
 291 movewordedge(int dir)
 292 {
 293         if (dir < 0) { /* move cursor to the start of the word*/
 294                 while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 295                         cursor = nextrune(-1);
 296                 while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 297                         cursor = nextrune(-1);
 298         } else { /* move cursor to the end of the word */
 299                 while (text[cursor] && strchr(worddelimiters, text[cursor]))
 300                         cursor = nextrune(+1);
 301                 while (text[cursor] && !strchr(worddelimiters, text[cursor]))
 302                         cursor = nextrune(+1);
 303         }
 304 }
 305
 306 static void
 307 keypress(XKeyEvent *ev)
 308 {
 309         char buf[32];
 310         int len;
 311         KeySym ksym = NoSymbol;
 312         Status status;
 313
 314         len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
 315         if (status == XBufferOverflow)
 316                 return;
 317         if (ev->state & ControlMask)
 318                 switch(ksym) {
 319                 case XK_a: ksym = XK_Home;      break;
 320                 case XK_b: ksym = XK_Left;      break;
 321                 case XK_c: ksym = XK_Escape;    break;
 322                 case XK_d: ksym = XK_Delete;    break;
 323                 case XK_e: ksym = XK_End;       break;
 324                 case XK_f: ksym = XK_Right;     break;
 325                 case XK_g: ksym = XK_Escape;    break;
 326                 case XK_h: ksym = XK_BackSpace; break;
 327                 case XK_i: ksym = XK_Tab;       break;
 328                 case XK_j: /* fallthrough */
 329                 case XK_J: /* fallthrough */
 330                 case XK_m: /* fallthrough */
 331                 case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
 332                 case XK_n: ksym = XK_Down;      break;
 333                 case XK_p: ksym = XK_Up;        break;
 334
 335                 case XK_k: /* delete right */
 336                         text[cursor] = '\0';
 337                         match();
 338                         break;
 339                 case XK_u: /* delete left */
 340                         insert(NULL, 0 - cursor);
 341                         break;
 342                 case XK_w: /* delete word */
 343                         while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
 344                                 insert(NULL, nextrune(-1) - cursor);
 345                         while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
 346                                 insert(NULL, nextrune(-1) - cursor);
 347                         break;
 348                 case XK_y: /* paste selection */
 349                 case XK_Y:
 350                         XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
 351                                           utf8, utf8, win, CurrentTime);
 352                         return;
 353                 case XK_Left:
 354                         movewordedge(-1);
 355                         ksym = NoSymbol;
 356                         break;
 357                 case XK_Right:
 358                         movewordedge(+1);
 359                         ksym = NoSymbol;
 360                         break;
 361                 case XK_Return:
 362                 case XK_KP_Enter:
 363                         break;
 364                 case XK_bracketleft:
 365                         cleanup();
 366                         exit(1);
 367                 default:
 368                         return;
 369                 }
 370         else if (ev->state & Mod1Mask)
 371                 switch(ksym) {
 372                 case XK_b:
 373                         movewordedge(-1);
 374                         ksym = NoSymbol;
 375                         break;
 376                 case XK_f:
 377                         movewordedge(+1);
 378                         ksym = NoSymbol;
 379                         break;
 380                 case XK_g: ksym = XK_Home;  break;
 381                 case XK_G: ksym = XK_End;   break;
 382                 case XK_h: ksym = XK_Up;    break;
 383                 case XK_j: ksym = XK_Next;  break;
 384                 case XK_k: ksym = XK_Prior; break;
 385                 case XK_l: ksym = XK_Down;  break;
 386                 default:
 387                         return;
 388                 }
 389         switch(ksym) {
 390         default:
 391                 if (!iscntrl(*buf))
 392                         insert(buf, len);
 393                 break;
 394         case NoSymbol:
 395                 break;
 396         case XK_Delete:
 397                 if (text[cursor] == '\0')
 398                         return;
 399                 cursor = nextrune(+1);
 400                 /* fallthrough */
 401         case XK_BackSpace:
 402                 if (cursor == 0)
 403                         return;
 404                 insert(NULL, nextrune(-1) - cursor);
 405                 break;
 406         case XK_End:
 407                 if (text[cursor] != '\0') {
 408                         cursor = strlen(text);
 409                         break;
 410                 }
 411                 if (next) {
 412                         /* jump to end of list and position items in reverse */
 413                         curr = matchend;
 414                         calcoffsets();
 415                         curr = prev;
 416                         calcoffsets();
 417                         while (next && (curr = curr->right))
 418                                 calcoffsets();
 419                 }
 420                 sel = matchend;
 421                 break;
 422         case XK_Escape:
 423                 cleanup();
 424                 exit(1);
 425         case XK_Home:
 426                 if (sel == matches) {
 427                         cursor = 0;
 428                         break;
 429                 }
 430                 sel = curr = matches;
 431                 calcoffsets();
 432                 break;
 433         case XK_Left:
 434                 if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
 435                         cursor = nextrune(-1);
 436                         break;
 437                 }
 438                 if (lines > 0)
 439                         return;
 440                 /* fallthrough */
 441         case XK_Up:
 442                 if (sel && sel->left && (sel = sel->left)->right == curr) {
 443                         curr = prev;
 444                         calcoffsets();
 445                 }
 446                 break;
 447         case XK_Next:
 448                 if (!next)
 449                         return;
 450                 sel = curr = next;
 451                 calcoffsets();
 452                 break;
 453         case XK_Prior:
 454                 if (!prev)
 455                         return;
 456                 sel = curr = prev;
 457                 calcoffsets();
 458                 break;
 459         case XK_Return:
 460         case XK_KP_Enter:
 461                 puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
 462                 if (!(ev->state & ControlMask)) {
 463                         cleanup();
 464                         exit(0);
 465                 }
 466                 if (sel)
 467                         sel->out = 1;
 468                 break;
 469         case XK_Right:
 470                 if (text[cursor] != '\0') {
 471                         cursor = nextrune(+1);
 472                         break;
 473                 }
 474                 if (lines > 0)
 475                         return;
 476                 /* fallthrough */
 477         case XK_Down:
 478                 if (sel && sel->right && (sel = sel->right) == next) {
 479                         curr = next;
 480                         calcoffsets();
 481                 }
 482                 break;
 483         case XK_Tab:
 484                 if (!sel)
 485                         return;
 486                 strncpy(text, sel->text, sizeof text - 1);
 487                 text[sizeof text - 1] = '\0';
 488                 cursor = strlen(text);
 489                 match();
 490                 break;
 491         }
 492         drawmenu();
 493 }
 494
 495 static void
 496 paste(void)
 497 {
 498         char *p, *q;
 499         int di;
 500         unsigned long dl;
 501         Atom da;
 502
 503         /* we have been given the current selection, now insert it into input */
 504         if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
 505                            utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
 506             == Success && p) {
 507                 insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
 508                 XFree(p);
 509         }
 510         drawmenu();
 511 }
 512
 513 static void
 514 readstdin(void)
 515 {
 516         char buf[sizeof text], *p;
 517         size_t i, imax = 0, size = 0;
 518         unsigned int tmpmax = 0;
 519
 520         /* read each line from stdin and add it to the item list */
 521         for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
 522                 if (i + 1 >= size / sizeof *items)
 523                         if (!(items = realloc(items, (size += BUFSIZ))))
 524                                 die("cannot realloc %u bytes:", size);
 525                 if ((p = strchr(buf, '\n')))
 526                         *p = '\0';
 527                 if (!(items[i].text = strdup(buf)))
 528                         die("cannot strdup %u bytes:", strlen(buf) + 1);
 529                 items[i].out = 0;
 530                 drw_font_getexts(drw->fonts, buf, strlen(buf), &tmpmax, NULL);
 531                 if (tmpmax > inputw) {
 532                         inputw = tmpmax;
 533                         imax = i;
 534                 }
 535         }
 536         if (items)
 537                 items[i].text = NULL;
 538         inputw = items ? TEXTW(items[imax].text) : 0;
 539         lines = MIN(lines, i);
 540 }
 541
 542 static void
 543 run(void)
 544 {
 545         XEvent ev;
 546
 547         while (!XNextEvent(dpy, &ev)) {
 548                 if (XFilterEvent(&ev, win))
 549                         continue;
 550                 switch(ev.type) {
 551                 case Expose:
 552                         if (ev.xexpose.count == 0)
 553                                 drw_map(drw, win, 0, 0, mw, mh);
 554                         break;
 555                 case FocusIn:
 556                         /* regrab focus from parent window */
 557                         if (ev.xfocus.window != win)
 558                                 grabfocus();
 559                         break;
 560                 case KeyPress:
 561                         keypress(&ev.xkey);
 562                         break;
 563                 case SelectionNotify:
 564                         if (ev.xselection.property == utf8)
 565                                 paste();
 566                         break;
 567                 case VisibilityNotify:
 568                         if (ev.xvisibility.state != VisibilityUnobscured)
 569                                 XRaiseWindow(dpy, win);
 570                         break;
 571                 }
 572         }
 573 }
 574
 575 static void
 576 setup(void)
 577 {
 578         int x, y, i, j;
 579         unsigned int du;
 580         XSetWindowAttributes swa;
 581         XIM xim;
 582         Window w, dw, *dws;
 583         XWindowAttributes wa;
 584         XClassHint ch = {"dmenu", "dmenu"};
 585 #ifdef XINERAMA
 586         XineramaScreenInfo *info;
 587         Window pw;
 588         int a, di, n, area = 0;
 589 #endif
 590         /* init appearance */
 591         for (j = 0; j < SchemeLast; j++)
 592                 scheme[j] = drw_scm_create(drw, colors[j], 2);
 593
 594         clip = XInternAtom(dpy, "CLIPBOARD",   False);
 595         utf8 = XInternAtom(dpy, "UTF8_STRING", False);
 596
 597         /* calculate menu geometry */
 598         bh = drw->fonts->h + 2;
 599         lines = MAX(lines, 0);
 600         mh = (lines + 1) * bh;
 601 #ifdef XINERAMA
 602         i = 0;
 603         if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
 604                 XGetInputFocus(dpy, &w, &di);
 605                 if (mon >= 0 && mon < n)
 606                         i = mon;
 607                 else if (w != root && w != PointerRoot && w != None) {
 608                         /* find top-level window containing current input focus */
 609                         do {
 610                                 if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
 611                                         XFree(dws);
 612                         } while (w != root && w != pw);
 613                         /* find xinerama screen with which the window intersects most */
 614                         if (XGetWindowAttributes(dpy, pw, &wa))
 615                                 for (j = 0; j < n; j++)
 616                                         if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
 617                                                 area = a;
 618                                                 i = j;
 619                                         }
 620                 }
 621                 /* no focused window is on screen, so use pointer location instead */
 622                 if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
 623                         for (i = 0; i < n; i++)
 624                                 if (INTERSECT(x, y, 1, 1, info[i]))
 625                                         break;
 626
 627                 x = info[i].x_org;
 628                 y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
 629                 mw = info[i].width;
 630                 XFree(info);
 631         } else
 632 #endif
 633         {
 634                 if (!XGetWindowAttributes(dpy, parentwin, &wa))
 635                         die("could not get embedding window attributes: 0x%lx",
 636                             parentwin);
 637                 x = 0;
 638                 y = topbar ? 0 : wa.height - mh;
 639                 mw = wa.width;
 640         }
 641         promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
 642         inputw = MIN(inputw, mw/3);
 643         match();
 644
 645         /* create menu window */
 646         swa.override_redirect = True;
 647         swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
 648         swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
 649         win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
 650                             CopyFromParent, CopyFromParent, CopyFromParent,
 651                             CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
 652         XSetClassHint(dpy, win, &ch);
 653
 654         /* open input methods */
 655         xim = XOpenIM(dpy, NULL, NULL, NULL);
 656         xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
 657                         XNClientWindow, win, XNFocusWindow, win, NULL);
 658
 659         XMapRaised(dpy, win);
 660         if (embed) {
 661                 XSelectInput(dpy, parentwin, FocusChangeMask);
 662                 if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
 663                         for (i = 0; i < du && dws[i] != win; ++i)
 664                                 XSelectInput(dpy, dws[i], FocusChangeMask);
 665                         XFree(dws);
 666                 }
 667                 grabfocus();
 668         }
 669         drw_resize(drw, mw, mh);
 670         drawmenu();
 671 }
 672
 673 static void
 674 usage(void)
 675 {
 676         fputs("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 677               "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n", stderr);
 678         exit(1);
 679 }
 680
 681 int
 682 main(int argc, char *argv[])
 683 {
 684         XWindowAttributes wa;
 685         int i, fast = 0;
 686
 687         for (i = 1; i < argc; i++)
 688                 /* these options take no arguments */
 689                 if (!strcmp(argv[i], "-v")) {      /* prints version information */
 690                         puts("dmenu-"VERSION);
 691                         exit(0);
 692                 } else if (!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
 693                         topbar = 0;
 694                 else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
 695                         fast = 1;
 696                 else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
 697                         fstrncmp = strncasecmp;
 698                         fstrstr = cistrstr;
 699                 } else if (i + 1 == argc)
 700                         usage();
 701                 /* these options take one argument */
 702                 else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
 703                         lines = atoi(argv[++i]);
 704                 else if (!strcmp(argv[i], "-m"))
 705                         mon = atoi(argv[++i]);
 706                 else if (!strcmp(argv[i], "-p"))   /* adds prompt to left of input field */
 707                         prompt = argv[++i];
 708                 else if (!strcmp(argv[i], "-fn"))  /* font or font set */
 709                         fonts[0] = argv[++i];
 710                 else if (!strcmp(argv[i], "-nb"))  /* normal background color */
 711                         colors[SchemeNorm][ColBg] = argv[++i];
 712                 else if (!strcmp(argv[i], "-nf"))  /* normal foreground color */
 713                         colors[SchemeNorm][ColFg] = argv[++i];
 714                 else if (!strcmp(argv[i], "-sb"))  /* selected background color */
 715                         colors[SchemeSel][ColBg] = argv[++i];
 716                 else if (!strcmp(argv[i], "-sf"))  /* selected foreground color */
 717                         colors[SchemeSel][ColFg] = argv[++i];
 718                 else if (!strcmp(argv[i], "-w"))   /* embedding window id */
 719                         embed = argv[++i];
 720                 else
 721                         usage();
 722
 723         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 724                 fputs("warning: no locale support\n", stderr);
 725         if (!(dpy = XOpenDisplay(NULL)))
 726                 die("cannot open display");
 727         screen = DefaultScreen(dpy);
 728         root = RootWindow(dpy, screen);
 729         if (!embed || !(parentwin = strtol(embed, NULL, 0)))
 730                 parentwin = root;
 731         if (!XGetWindowAttributes(dpy, parentwin, &wa))
 732                 die("could not get embedding window attributes: 0x%lx",
 733                     parentwin);
 734         drw = drw_create(dpy, screen, root, wa.width, wa.height);
 735         if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
 736                 die("no fonts could be loaded.");
 737         lrpad = drw->fonts->h;
 738
 739         if (fast) {
 740                 grabkeyboard();
 741                 readstdin();
 742         } else {
 743                 readstdin();
 744                 grabkeyboard();
 745         }
 746         setup();
 747         run();
 748
 749         return 1; /* unreachable */
 750 }