dmenu.c

   1 /* See LICENSE file for copyright and license details. */
   2 #define _BSD_SOURCE
   3 #include <ctype.h>
   4 #include <stdarg.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <strings.h>
   9 #include <unistd.h>
  10 #include <X11/keysym.h>
  11 #include <X11/Xlib.h>
  12 #include <X11/Xutil.h>
  13 #ifdef XINERAMA
  14 #include <X11/extensions/Xinerama.h>
  15 #endif
  16
  17 /* macros */
  18 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
  19 #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
  20 #define MIN(a, b)               ((a) < (b) ? (a) : (b))
  21
  22 /* enums */
  23 enum { ColFG, ColBG, ColLast };
  24
  25 /* typedefs */
  26 typedef struct {
  27         int x, y, w, h;
  28         unsigned long norm[ColLast];
  29         unsigned long sel[ColLast];
  30         Drawable drawable;
  31         GC gc;
  32         struct {
  33                 XFontStruct *xfont;
  34                 XFontSet set;
  35                 int ascent;
  36                 int descent;
  37                 int height;
  38         } font;
  39 } DC; /* draw context */
  40
  41 typedef struct Item Item;
  42 struct Item {
  43         char *text;
  44         Item *next;             /* traverses all items */
  45         Item *left, *right;     /* traverses items matching current search pattern */
  46 };
  47
  48 /* forward declarations */
  49 static void appenditem(Item *i, Item **list, Item **last);
  50 static void calcoffsets(void);
  51 static char *cistrstr(const char *s, const char *sub);
  52 static void cleanup(void);
  53 static void drawmenu(void);
  54 static void drawtext(const char *text, unsigned long col[ColLast]);
  55 static void eprint(const char *errstr, ...);
  56 static unsigned long getcolor(const char *colstr);
  57 static Bool grabkeyboard(void);
  58 static void initfont(const char *fontstr);
  59 static void kpress(XKeyEvent * e);
  60 static void match(char *pattern);
  61 static void readstdin(void);
  62 static void run(void);
  63 static void setup(Bool topbar);
  64 static int textnw(const char *text, unsigned int len);
  65 static int textw(const char *text);
  66
  67 #include "config.h"
  68
  69 /* variables */
  70 static char *maxname = NULL;
  71 static char *prompt = NULL;
  72 static char text[4096];
  73 static int cmdw = 0;
  74 static int promptw = 0;
  75 static int ret = 0;
  76 static int screen;
  77 static unsigned int mw, mh;
  78 static unsigned int numlockmask = 0;
  79 static Bool running = True;
  80 static Display *dpy;
  81 static DC dc = {0};
  82 static Item *allitems = NULL;   /* first of all items */
  83 static Item *item = NULL;       /* first of pattern matching items */
  84 static Item *sel = NULL;
  85 static Item *next = NULL;
  86 static Item *prev = NULL;
  87 static Item *curr = NULL;
  88 static Window root, win;
  89 static int (*fstrncmp)(const char *, const char *, size_t n) = strncmp;
  90 static char *(*fstrstr)(const char *, const char *) = strstr;
  91
  92 void
  93 appenditem(Item *i, Item **list, Item **last) {
  94         if(!(*last))
  95                 *list = i;
  96         else
  97                 (*last)->right = i;
  98         i->left = *last;
  99         i->right = NULL;
 100         *last = i;
 101 }
 102
 103 void
 104 calcoffsets(void) {
 105         int tw;
 106         unsigned int w;
 107
 108         if(!curr)
 109                 return;
 110         w = promptw + cmdw + 2 * spaceitem;
 111         for(next = curr; next; next=next->right) {
 112                 tw = textw(next->text);
 113                 if(tw > mw / 3)
 114                         tw = mw / 3;
 115                 w += tw;
 116                 if(w > mw)
 117                         break;
 118         }
 119         w = promptw + cmdw + 2 * spaceitem;
 120         for(prev = curr; prev && prev->left; prev=prev->left) {
 121                 tw = textw(prev->left->text);
 122                 if(tw > mw / 3)
 123                         tw = mw / 3;
 124                 w += tw;
 125                 if(w > mw)
 126                         break;
 127         }
 128 }
 129
 130 char *
 131 cistrstr(const char *s, const char *sub) {
 132         int c, csub;
 133         unsigned int len;
 134
 135         if(!sub)
 136                 return (char *)s;
 137         if((c = *sub++) != 0) {
 138                 c = tolower(c);
 139                 len = strlen(sub);
 140                 do {
 141                         do {
 142                                 if((csub = *s++) == 0)
 143                                         return (NULL);
 144                         }
 145                         while(tolower(csub) != c);
 146                 }
 147                 while(strncasecmp(s, sub, len) != 0);
 148                 s--;
 149         }
 150         return (char *)s;
 151 }
 152
 153 void
 154 cleanup(void) {
 155         Item *itm;
 156
 157         while(allitems) {
 158                 itm = allitems->next;
 159                 free(allitems->text);
 160                 free(allitems);
 161                 allitems = itm;
 162         }
 163         if(dc.font.set)
 164                 XFreeFontSet(dpy, dc.font.set);
 165         else
 166                 XFreeFont(dpy, dc.font.xfont);
 167         XFreePixmap(dpy, dc.drawable);
 168         XFreeGC(dpy, dc.gc);
 169         XDestroyWindow(dpy, win);
 170         XUngrabKeyboard(dpy, CurrentTime);
 171 }
 172
 173 void
 174 drawmenu(void) {
 175         Item *i;
 176
 177         dc.x = 0;
 178         dc.y = 0;
 179         dc.w = mw;
 180         dc.h = mh;
 181         drawtext(NULL, dc.norm);
 182         /* print prompt? */
 183         if(promptw) {
 184                 dc.w = promptw;
 185                 drawtext(prompt, dc.sel);
 186         }
 187         dc.x += promptw;
 188         dc.w = mw - promptw;
 189         /* print command */
 190         if(cmdw && item)
 191                 dc.w = cmdw;
 192         drawtext(text[0] ? text : NULL, dc.norm);
 193         dc.x += cmdw;
 194         if(curr) {
 195                 dc.w = spaceitem;
 196                 drawtext((curr && curr->left) ? "<" : NULL, dc.norm);
 197                 dc.x += dc.w;
 198                 /* determine maximum items */
 199                 for(i = curr; i != next; i=i->right) {
 200                         dc.w = textw(i->text);
 201                         if(dc.w > mw / 3)
 202                                 dc.w = mw / 3;
 203                         drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
 204                         dc.x += dc.w;
 205                 }
 206                 dc.x = mw - spaceitem;
 207                 dc.w = spaceitem;
 208                 drawtext(next ? ">" : NULL, dc.norm);
 209         }
 210         XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
 211         XFlush(dpy);
 212 }
 213
 214 void
 215 drawtext(const char *text, unsigned long col[ColLast]) {
 216         char buf[256];
 217         int i, x, y, h, len, olen;
 218         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
 219
 220         XSetForeground(dpy, dc.gc, col[ColBG]);
 221         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 222         if(!text)
 223                 return;
 224         olen = strlen(text);
 225         h = dc.font.ascent + dc.font.descent;
 226         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
 227         x = dc.x + (h / 2);
 228         /* shorten text if necessary */
 229         for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
 230         if(!len)
 231                 return;
 232         memcpy(buf, text, len);
 233         if(len < olen)
 234                 for(i = len; i && i > len - 3; buf[--i] = '.');
 235         XSetForeground(dpy, dc.gc, col[ColFG]);
 236         if(dc.font.set)
 237                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
 238         else
 239                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 240 }
 241
 242 void
 243 eprint(const char *errstr, ...) {
 244         va_list ap;
 245
 246         va_start(ap, errstr);
 247         vfprintf(stderr, errstr, ap);
 248         va_end(ap);
 249         exit(EXIT_FAILURE);
 250 }
 251
 252 unsigned long
 253 getcolor(const char *colstr) {
 254         Colormap cmap = DefaultColormap(dpy, screen);
 255         XColor color;
 256
 257         if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
 258                 eprint("error, cannot allocate color '%s'\n", colstr);
 259         return color.pixel;
 260 }
 261
 262 Bool
 263 grabkeyboard(void) {
 264         unsigned int len;
 265
 266         for(len = 1000; len; len--) {
 267                 if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
 268                 == GrabSuccess)
 269                         break;
 270                 usleep(1000);
 271         }
 272         return len > 0;
 273 }
 274
 275 void
 276 initfont(const char *fontstr) {
 277         char *def, **missing;
 278         int i, n;
 279
 280         if(!fontstr || fontstr[0] == '\0')
 281                 eprint("error, cannot load font: '%s'\n", fontstr);
 282         missing = NULL;
 283         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 284         if(missing)
 285                 XFreeStringList(missing);
 286         if(dc.font.set) {
 287                 XFontSetExtents *font_extents;
 288                 XFontStruct **xfonts;
 289                 char **font_names;
 290                 dc.font.ascent = dc.font.descent = 0;
 291                 font_extents = XExtentsOfFontSet(dc.font.set);
 292                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 293                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 294                         if(dc.font.ascent < (*xfonts)->ascent)
 295                                 dc.font.ascent = (*xfonts)->ascent;
 296                         if(dc.font.descent < (*xfonts)->descent)
 297                                 dc.font.descent = (*xfonts)->descent;
 298                         xfonts++;
 299                 }
 300         }
 301         else {
 302                 if(dc.font.xfont)
 303                         XFreeFont(dpy, dc.font.xfont);
 304                 dc.font.xfont = NULL;
 305                 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
 306                 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
 307                         eprint("error, cannot load font: '%s'\n", fontstr);
 308                 dc.font.ascent = dc.font.xfont->ascent;
 309                 dc.font.descent = dc.font.xfont->descent;
 310         }
 311         dc.font.height = dc.font.ascent + dc.font.descent;
 312 }
 313
 314 void
 315 kpress(XKeyEvent * e) {
 316         char buf[32];
 317         int i, num;
 318         unsigned int len;
 319         KeySym ksym;
 320
 321         len = strlen(text);
 322         buf[0] = 0;
 323         num = XLookupString(e, buf, sizeof buf, &ksym, 0);
 324         if(IsKeypadKey(ksym)) {
 325                 if(ksym == XK_KP_Enter)
 326                         ksym = XK_Return;
 327                 else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
 328                         ksym = (ksym - XK_KP_0) + XK_0;
 329         }
 330         if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
 331            || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
 332            || IsPrivateKeypadKey(ksym))
 333                 return;
 334         /* first check if a control mask is omitted */
 335         if(e->state & ControlMask) {
 336                 switch (ksym) {
 337                 default:        /* ignore other control sequences */
 338                         return;
 339                 case XK_bracketleft:
 340                         ksym = XK_Escape;
 341                         break;
 342                 case XK_h:
 343                 case XK_H:
 344                         ksym = XK_BackSpace;
 345                         break;
 346                 case XK_i:
 347                 case XK_I:
 348                         ksym = XK_Tab;
 349                         break;
 350                 case XK_j:
 351                 case XK_J:
 352                         ksym = XK_Return;
 353                         break;
 354                 case XK_u:
 355                 case XK_U:
 356                         text[0] = 0;
 357                         match(text);
 358                         drawmenu();
 359                         return;
 360                 case XK_w:
 361                 case XK_W:
 362                         if(len) {
 363                                 i = len - 1;
 364                                 while(i >= 0 && text[i] == ' ')
 365                                         text[i--] = 0;
 366                                 while(i >= 0 && text[i] != ' ')
 367                                         text[i--] = 0;
 368                                 match(text);
 369                                 drawmenu();
 370                         }
 371                         return;
 372                 }
 373         }
 374         if(CLEANMASK(e->state) & Mod1Mask) {
 375                 switch(ksym) {
 376                 default: return;
 377                 case XK_h:
 378                         ksym = XK_Left;
 379                         break;
 380                 case XK_l:
 381                         ksym = XK_Right;
 382                         break;
 383                 case XK_j:
 384                         ksym = XK_Next;
 385                         break;
 386                 case XK_k:
 387                         ksym = XK_Prior;
 388                         break;
 389                 case XK_g:
 390                         ksym = XK_Home;
 391                         break;
 392                 case XK_G:
 393                         ksym = XK_End;
 394                         break;
 395                 }
 396         }
 397         switch(ksym) {
 398         default:
 399                 if(num && !iscntrl((int) buf[0])) {
 400                         buf[num] = 0;
 401                         if(len > 0)
 402                                 strncat(text, buf, sizeof text);
 403                         else
 404                                 strncpy(text, buf, sizeof text);
 405                         match(text);
 406                 }
 407                 break;
 408         case XK_BackSpace:
 409                 if(len) {
 410                         text[--len] = 0;
 411                         match(text);
 412                 }
 413                 break;
 414         case XK_End:
 415                 if(!item)
 416                         return;
 417                 while(next) {
 418                         sel = curr = next;
 419                         calcoffsets();
 420                 }
 421                 while(sel && sel->right)
 422                         sel = sel->right;
 423                 break;
 424         case XK_Escape:
 425                 ret = 1;
 426                 running = False;
 427                 break;
 428         case XK_Home:
 429                 if(!item)
 430                         return;
 431                 sel = curr = item;
 432                 calcoffsets();
 433                 break;
 434         case XK_Left:
 435                 if(!(sel && sel->left))
 436                         return;
 437                 sel=sel->left;
 438                 if(sel->right == curr) {
 439                         curr = prev;
 440                         calcoffsets();
 441                 }
 442                 break;
 443         case XK_Next:
 444                 if(!next)
 445                         return;
 446                 sel = curr = next;
 447                 calcoffsets();
 448                 break;
 449         case XK_Prior:
 450                 if(!prev)
 451                         return;
 452                 sel = curr = prev;
 453                 calcoffsets();
 454                 break;
 455         case XK_Return:
 456                 if((e->state & ShiftMask) && *text)
 457                         fprintf(stdout, "%s", text);
 458                 else if(sel)
 459                         fprintf(stdout, "%s", sel->text);
 460                 else if(*text)
 461                         fprintf(stdout, "%s", text);
 462                 fflush(stdout);
 463                 running = False;
 464                 break;
 465         case XK_Right:
 466                 if(!(sel && sel->right))
 467                         return;
 468                 sel=sel->right;
 469                 if(sel == next) {
 470                         curr = next;
 471                         calcoffsets();
 472                 }
 473                 break;
 474         case XK_Tab:
 475                 if(!sel)
 476                         return;
 477                 strncpy(text, sel->text, sizeof text);
 478                 match(text);
 479                 break;
 480         }
 481         drawmenu();
 482 }
 483
 484 void
 485 match(char *pattern) {
 486         unsigned int plen;
 487         Item *i, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
 488
 489         if(!pattern)
 490                 return;
 491         plen = strlen(pattern);
 492         item = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
 493         for(i = allitems; i; i = i->next)
 494                 if(!fstrncmp(pattern, i->text, plen + 1))
 495                         appenditem(i, &lexact, &exactend);
 496                 else if(!fstrncmp(pattern, i->text, plen))
 497                         appenditem(i, &lprefix, &prefixend);
 498                 else if(fstrstr(i->text, pattern))
 499                         appenditem(i, &lsubstr, &substrend);
 500         if(lexact) {
 501                 item = lexact;
 502                 itemend = exactend;
 503         }
 504         if(lprefix) {
 505                 if(itemend) {
 506                         itemend->right = lprefix;
 507                         lprefix->left = itemend;
 508                 }
 509                 else
 510                         item = lprefix;
 511                 itemend = prefixend;
 512         }
 513         if(lsubstr) {
 514                 if(itemend) {
 515                         itemend->right = lsubstr;
 516                         lsubstr->left = itemend;
 517                 }
 518                 else
 519                         item = lsubstr;
 520         }
 521         curr = prev = next = sel = item;
 522         calcoffsets();
 523 }
 524
 525 void
 526 readstdin(void) {
 527         char *p, buf[1024];
 528         unsigned int len = 0, max = 0;
 529         Item *i, *new;
 530
 531         i = 0;
 532         while(fgets(buf, sizeof buf, stdin)) {
 533                 len = strlen(buf);
 534                 if (buf[len - 1] == '\n')
 535                         buf[len - 1] = 0;
 536                 if(!(p = strdup(buf)))
 537                         eprint("fatal: could not strdup() %u bytes\n", strlen(buf));
 538                 if(max < len) {
 539                         maxname = p;
 540                         max = len;
 541                 }
 542                 if((new = (Item *)malloc(sizeof(Item))) == NULL)
 543                         eprint("fatal: could not malloc() %u bytes\n", sizeof(Item));
 544                 new->next = new->left = new->right = NULL;
 545                 new->text = p;
 546                 if(!i)
 547                         allitems = new;
 548                 else
 549                         i->next = new;
 550                 i = new;
 551         }
 552 }
 553
 554 void
 555 run(void) {
 556         XEvent ev;
 557
 558         /* main event loop */
 559         while(running && !XNextEvent(dpy, &ev))
 560                 switch (ev.type) {
 561                 default:        /* ignore all crap */
 562                         break;
 563                 case KeyPress:
 564                         kpress(&ev.xkey);
 565                         break;
 566                 case Expose:
 567                         if(ev.xexpose.count == 0)
 568                                 drawmenu();
 569                         break;
 570                 }
 571 }
 572
 573 void
 574 setup(Bool topbar) {
 575         int i, j, x, y;
 576 #if XINERAMA
 577         int n;
 578         XineramaScreenInfo *info = NULL;
 579 #endif
 580         XModifierKeymap *modmap;
 581         XSetWindowAttributes wa;
 582
 583         /* init modifier map */
 584         modmap = XGetModifierMapping(dpy);
 585         for(i = 0; i < 8; i++)
 586                 for(j = 0; j < modmap->max_keypermod; j++) {
 587                         if(modmap->modifiermap[i * modmap->max_keypermod + j]
 588                         == XKeysymToKeycode(dpy, XK_Num_Lock))
 589                                 numlockmask = (1 << i);
 590                 }
 591         XFreeModifiermap(modmap);
 592
 593         /* style */
 594         dc.norm[ColBG] = getcolor(normbgcolor);
 595         dc.norm[ColFG] = getcolor(normfgcolor);
 596         dc.sel[ColBG] = getcolor(selbgcolor);
 597         dc.sel[ColFG] = getcolor(selfgcolor);
 598         initfont(font);
 599
 600         /* menu window */
 601         wa.override_redirect = 1;
 602         wa.background_pixmap = ParentRelative;
 603         wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask;
 604
 605         /* menu window geometry */
 606         mh = dc.font.height + 2;
 607 #if XINERAMA
 608         if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
 609                 i = 0;
 610                 if(n > 1) {
 611                         int di;
 612                         unsigned int dui;
 613                         Window dummy;
 614                         if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
 615                                 for(i = 0; i < n; i++)
 616                                         if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
 617                                                 break;
 618                 }
 619                 x = info[i].x_org;
 620                 y = topbar ? info[i].y_org : info[i].y_org + info[i].height - mh;
 621                 mw = info[i].width;
 622                 XFree(info);
 623         }
 624         else
 625 #endif
 626         {
 627                 x = 0;
 628                 y = topbar ? 0 : DisplayHeight(dpy, screen) - mh;
 629                 mw = DisplayWidth(dpy, screen);
 630         }
 631
 632         win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
 633                         DefaultDepth(dpy, screen), CopyFromParent,
 634                         DefaultVisual(dpy, screen),
 635                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
 636
 637         /* pixmap */
 638         dc.drawable = XCreatePixmap(dpy, root, mw, mh, DefaultDepth(dpy, screen));
 639         dc.gc = XCreateGC(dpy, root, 0, 0);
 640         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
 641         if(!dc.font.set)
 642                 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
 643         if(maxname)
 644                 cmdw = textw(maxname);
 645         if(cmdw > mw / 3)
 646                 cmdw = mw / 3;
 647         if(prompt)
 648                 promptw = textw(prompt);
 649         if(promptw > mw / 5)
 650                 promptw = mw / 5;
 651         text[0] = 0;
 652         match(text);
 653         XMapRaised(dpy, win);
 654 }
 655
 656 int
 657 textnw(const char *text, unsigned int len) {
 658         XRectangle r;
 659
 660         if(dc.font.set) {
 661                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
 662                 return r.width;
 663         }
 664         return XTextWidth(dc.font.xfont, text, len);
 665 }
 666
 667 int
 668 textw(const char *text) {
 669         return textnw(text, strlen(text)) + dc.font.height;
 670 }
 671
 672 int
 673 main(int argc, char *argv[]) {
 674         unsigned int i;
 675         Bool topbar = True;
 676
 677         /* command line args */
 678         for(i = 1; i < argc; i++)
 679                 if(!strcmp(argv[i], "-i")) {
 680                         fstrncmp = strncasecmp;
 681                         fstrstr = cistrstr;
 682                 }
 683                 else if(!strcmp(argv[i], "-b"))
 684                         topbar = False;
 685                 else if(!strcmp(argv[i], "-fn")) {
 686                         if(++i < argc) font = argv[i];
 687                 }
 688                 else if(!strcmp(argv[i], "-nb")) {
 689                         if(++i < argc) normbgcolor = argv[i];
 690                 }
 691                 else if(!strcmp(argv[i], "-nf")) {
 692                         if(++i < argc) normfgcolor = argv[i];
 693                 }
 694                 else if(!strcmp(argv[i], "-p")) {
 695                         if(++i < argc) prompt = argv[i];
 696                 }
 697                 else if(!strcmp(argv[i], "-sb")) {
 698                         if(++i < argc) selbgcolor = argv[i];
 699                 }
 700                 else if(!strcmp(argv[i], "-sf")) {
 701                         if(++i < argc) selfgcolor = argv[i];
 702                 }
 703                 else if(!strcmp(argv[i], "-v"))
 704                         eprint("dmenu-"VERSION", © 2006-2008 dmenu engineers, see LICENSE for details\n");
 705                 else
 706                         eprint("usage: dmenu [-i] [-b] [-fn <font>] [-nb <color>] [-nf <color>]\n"
 707                                "             [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
 708         if(!XSupportsLocale())
 709                 fprintf(stderr, "warning: no locale support\n");
 710         if(!(dpy = XOpenDisplay(0)))
 711                 eprint("dmenu: cannot open display\n");
 712         screen = DefaultScreen(dpy);
 713         root = RootWindow(dpy, screen);
 714
 715         if(isatty(STDIN_FILENO)) {
 716                 readstdin();
 717                 running = grabkeyboard();
 718         }
 719         else { /* prevent keypress loss */
 720                 running = grabkeyboard();
 721                 readstdin();
 722         }
 723
 724         setup(topbar);
 725         drawmenu();
 726         XSync(dpy, False);
 727         run();
 728         cleanup();
 729         XCloseDisplay(dpy);
 730         return ret;
 731 }