dmenu.c

   1 /* See LICENSE file for copyright and license details. */
   2 #define _BSD_SOURCE
   3 #include <ctype.h>
   4 #include <locale.h>
   5 #include <stdarg.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <strings.h>
  10 #include <unistd.h>
  11 #include <X11/keysym.h>
  12 #include <X11/Xlib.h>
  13 #include <X11/Xutil.h>
  14 #ifdef XINERAMA
  15 #include <X11/extensions/Xinerama.h>
  16 #endif
  17
  18 /* macros */
  19 #define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
  20 #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
  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         int x, y, w, h;
 217         static char buf[256];
 218         unsigned int len, olen;
 219         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
 220
 221         XSetForeground(dpy, dc.gc, col[ColBG]);
 222         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 223         if(!text)
 224                 return;
 225         w = 0;
 226         olen = len = strlen(text);
 227         if(len >= sizeof buf)
 228                 len = sizeof buf - 1;
 229         memcpy(buf, text, len);
 230         buf[len] = 0;
 231         h = dc.font.ascent + dc.font.descent;
 232         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
 233         x = dc.x + (h / 2);
 234         /* shorten text if necessary */
 235         while(len && (w = textnw(buf, len)) > dc.w - h)
 236                 buf[--len] = 0;
 237         if(len < olen) {
 238                 if(len > 1)
 239                         buf[len - 1] = '.';
 240                 if(len > 2)
 241                         buf[len - 2] = '.';
 242                 if(len > 3)
 243                         buf[len - 3] = '.';
 244         }
 245         if(w > dc.w)
 246                 return; /* too long */
 247         XSetForeground(dpy, dc.gc, col[ColFG]);
 248         if(dc.font.set)
 249                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
 250         else
 251                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 252 }
 253
 254 void
 255 eprint(const char *errstr, ...) {
 256         va_list ap;
 257
 258         va_start(ap, errstr);
 259         vfprintf(stderr, errstr, ap);
 260         va_end(ap);
 261         exit(EXIT_FAILURE);
 262 }
 263
 264 unsigned long
 265 getcolor(const char *colstr) {
 266         Colormap cmap = DefaultColormap(dpy, screen);
 267         XColor color;
 268
 269         if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
 270                 eprint("error, cannot allocate color '%s'\n", colstr);
 271         return color.pixel;
 272 }
 273
 274 Bool
 275 grabkeyboard(void) {
 276         unsigned int len;
 277
 278         for(len = 1000; len; len--) {
 279                 if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
 280                 == GrabSuccess)
 281                         break;
 282                 usleep(1000);
 283         }
 284         return len > 0;
 285 }
 286
 287 void
 288 initfont(const char *fontstr) {
 289         char *def, **missing;
 290         int i, n;
 291
 292         if(!fontstr || fontstr[0] == '\0')
 293                 eprint("error, cannot load font: '%s'\n", fontstr);
 294         missing = NULL;
 295         if(dc.font.set)
 296                 XFreeFontSet(dpy, dc.font.set);
 297         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 298         if(missing)
 299                 XFreeStringList(missing);
 300         if(dc.font.set) {
 301                 XFontSetExtents *font_extents;
 302                 XFontStruct **xfonts;
 303                 char **font_names;
 304                 dc.font.ascent = dc.font.descent = 0;
 305                 font_extents = XExtentsOfFontSet(dc.font.set);
 306                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 307                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 308                         if(dc.font.ascent < (*xfonts)->ascent)
 309                                 dc.font.ascent = (*xfonts)->ascent;
 310                         if(dc.font.descent < (*xfonts)->descent)
 311                                 dc.font.descent = (*xfonts)->descent;
 312                         xfonts++;
 313                 }
 314         }
 315         else {
 316                 if(dc.font.xfont)
 317                         XFreeFont(dpy, dc.font.xfont);
 318                 dc.font.xfont = NULL;
 319                 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
 320                 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
 321                         eprint("error, cannot load font: '%s'\n", fontstr);
 322                 dc.font.ascent = dc.font.xfont->ascent;
 323                 dc.font.descent = dc.font.xfont->descent;
 324         }
 325         dc.font.height = dc.font.ascent + dc.font.descent;
 326 }
 327
 328 void
 329 kpress(XKeyEvent * e) {
 330         char buf[32];
 331         int i, num;
 332         unsigned int len;
 333         KeySym ksym;
 334
 335         len = strlen(text);
 336         buf[0] = 0;
 337         num = XLookupString(e, buf, sizeof buf, &ksym, 0);
 338         if(IsKeypadKey(ksym)) {
 339                 if(ksym == XK_KP_Enter)
 340                         ksym = XK_Return;
 341                 else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
 342                         ksym = (ksym - XK_KP_0) + XK_0;
 343         }
 344         if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
 345            || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
 346            || IsPrivateKeypadKey(ksym))
 347                 return;
 348         /* first check if a control mask is omitted */
 349         if(e->state & ControlMask) {
 350                 switch (ksym) {
 351                 default:        /* ignore other control sequences */
 352                         return;
 353                 case XK_bracketleft:
 354                         ksym = XK_Escape;
 355                         break;
 356                 case XK_h:
 357                 case XK_H:
 358                         ksym = XK_BackSpace;
 359                         break;
 360                 case XK_i:
 361                 case XK_I:
 362                         ksym = XK_Tab;
 363                         break;
 364                 case XK_j:
 365                 case XK_J:
 366                         ksym = XK_Return;
 367                         break;
 368                 case XK_u:
 369                 case XK_U:
 370                         text[0] = 0;
 371                         match(text);
 372                         drawmenu();
 373                         return;
 374                 case XK_w:
 375                 case XK_W:
 376                         if(len) {
 377                                 i = len - 1;
 378                                 while(i >= 0 && text[i] == ' ')
 379                                         text[i--] = 0;
 380                                 while(i >= 0 && text[i] != ' ')
 381                                         text[i--] = 0;
 382                                 match(text);
 383                                 drawmenu();
 384                         }
 385                         return;
 386                 }
 387         }
 388         if(CLEANMASK(e->state) & Mod1Mask) {
 389                 switch(ksym) {
 390                 default: return;
 391                 case XK_h:
 392                         ksym = XK_Left;
 393                         break;
 394                 case XK_l:
 395                         ksym = XK_Right;
 396                         break;
 397                 case XK_j:
 398                         ksym = XK_Next;
 399                         break;
 400                 case XK_k:
 401                         ksym = XK_Prior;
 402                         break;
 403                 case XK_g:
 404                         ksym = XK_Home;
 405                         break;
 406                 case XK_G:
 407                         ksym = XK_End;
 408                         break;
 409                 }
 410         }
 411         switch(ksym) {
 412         default:
 413                 if(num && !iscntrl((int) buf[0])) {
 414                         buf[num] = 0;
 415                         if(len > 0)
 416                                 strncat(text, buf, sizeof text);
 417                         else
 418                                 strncpy(text, buf, sizeof text);
 419                         match(text);
 420                 }
 421                 break;
 422         case XK_BackSpace:
 423                 if(len) {
 424                         text[--len] = 0;
 425                         match(text);
 426                 }
 427                 break;
 428         case XK_End:
 429                 if(!item)
 430                         return;
 431                 while(next) {
 432                         sel = curr = next;
 433                         calcoffsets();
 434                 }
 435                 while(sel && sel->right)
 436                         sel = sel->right;
 437                 break;
 438         case XK_Escape:
 439                 ret = 1;
 440                 running = False;
 441                 break;
 442         case XK_Home:
 443                 if(!item)
 444                         return;
 445                 sel = curr = item;
 446                 calcoffsets();
 447                 break;
 448         case XK_Left:
 449                 if(!(sel && sel->left))
 450                         return;
 451                 sel=sel->left;
 452                 if(sel->right == curr) {
 453                         curr = prev;
 454                         calcoffsets();
 455                 }
 456                 break;
 457         case XK_Next:
 458                 if(!next)
 459                         return;
 460                 sel = curr = next;
 461                 calcoffsets();
 462                 break;
 463         case XK_Prior:
 464                 if(!prev)
 465                         return;
 466                 sel = curr = prev;
 467                 calcoffsets();
 468                 break;
 469         case XK_Return:
 470                 if((e->state & ShiftMask) && *text)
 471                         fprintf(stdout, "%s", text);
 472                 else if(sel)
 473                         fprintf(stdout, "%s", sel->text);
 474                 else if(*text)
 475                         fprintf(stdout, "%s", text);
 476                 fflush(stdout);
 477                 running = False;
 478                 break;
 479         case XK_Right:
 480                 if(!(sel && sel->right))
 481                         return;
 482                 sel=sel->right;
 483                 if(sel == next) {
 484                         curr = next;
 485                         calcoffsets();
 486                 }
 487                 break;
 488         case XK_Tab:
 489                 if(!sel)
 490                         return;
 491                 strncpy(text, sel->text, sizeof text);
 492                 match(text);
 493                 break;
 494         }
 495         drawmenu();
 496 }
 497
 498 void
 499 match(char *pattern) {
 500         unsigned int plen;
 501         Item *i, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
 502
 503         if(!pattern)
 504                 return;
 505         plen = strlen(pattern);
 506         item = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
 507         for(i = allitems; i; i = i->next)
 508                 if(!fstrncmp(pattern, i->text, plen + 1))
 509                         appenditem(i, &lexact, &exactend);
 510                 else if(!fstrncmp(pattern, i->text, plen))
 511                         appenditem(i, &lprefix, &prefixend);
 512                 else if(fstrstr(i->text, pattern))
 513                         appenditem(i, &lsubstr, &substrend);
 514         if(lexact) {
 515                 item = lexact;
 516                 itemend = exactend;
 517         }
 518         if(lprefix) {
 519                 if(itemend) {
 520                         itemend->right = lprefix;
 521                         lprefix->left = itemend;
 522                 }
 523                 else
 524                         item = lprefix;
 525                 itemend = prefixend;
 526         }
 527         if(lsubstr) {
 528                 if(itemend) {
 529                         itemend->right = lsubstr;
 530                         lsubstr->left = itemend;
 531                 }
 532                 else
 533                         item = lsubstr;
 534         }
 535         curr = prev = next = sel = item;
 536         calcoffsets();
 537 }
 538
 539 void
 540 readstdin(void) {
 541         char *p, buf[1024];
 542         unsigned int len = 0, max = 0;
 543         Item *i, *new;
 544
 545         i = 0;
 546         while(fgets(buf, sizeof buf, stdin)) {
 547                 len = strlen(buf);
 548                 if (buf[len - 1] == '\n')
 549                         buf[len - 1] = 0;
 550                 if(!(p = strdup(buf)))
 551                         eprint("fatal: could not strdup() %u bytes\n", strlen(buf));
 552                 if(max < len) {
 553                         maxname = p;
 554                         max = len;
 555                 }
 556                 if((new = (Item *)malloc(sizeof(Item))) == NULL)
 557                         eprint("fatal: could not malloc() %u bytes\n", sizeof(Item));
 558                 new->next = new->left = new->right = NULL;
 559                 new->text = p;
 560                 if(!i)
 561                         allitems = new;
 562                 else
 563                         i->next = new;
 564                 i = new;
 565         }
 566 }
 567
 568 void
 569 run(void) {
 570         XEvent ev;
 571
 572         /* main event loop */
 573         while(running && !XNextEvent(dpy, &ev))
 574                 switch (ev.type) {
 575                 default:        /* ignore all crap */
 576                         break;
 577                 case KeyPress:
 578                         kpress(&ev.xkey);
 579                         break;
 580                 case Expose:
 581                         if(ev.xexpose.count == 0)
 582                                 drawmenu();
 583                         break;
 584                 }
 585 }
 586
 587 void
 588 setup(Bool topbar) {
 589         int i, j, x, y;
 590 #if XINERAMA
 591         int n;
 592         XineramaScreenInfo *info = NULL;
 593 #endif
 594         XModifierKeymap *modmap;
 595         XSetWindowAttributes wa;
 596
 597         /* init modifier map */
 598         modmap = XGetModifierMapping(dpy);
 599         for(i = 0; i < 8; i++)
 600                 for(j = 0; j < modmap->max_keypermod; j++) {
 601                         if(modmap->modifiermap[i * modmap->max_keypermod + j]
 602                         == XKeysymToKeycode(dpy, XK_Num_Lock))
 603                                 numlockmask = (1 << i);
 604                 }
 605         XFreeModifiermap(modmap);
 606
 607         /* style */
 608         dc.norm[ColBG] = getcolor(normbgcolor);
 609         dc.norm[ColFG] = getcolor(normfgcolor);
 610         dc.sel[ColBG] = getcolor(selbgcolor);
 611         dc.sel[ColFG] = getcolor(selfgcolor);
 612         initfont(font);
 613
 614         /* menu window */
 615         wa.override_redirect = 1;
 616         wa.background_pixmap = ParentRelative;
 617         wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask;
 618
 619         /* menu window geometry */
 620         mh = dc.font.height + 2;
 621 #if XINERAMA
 622         if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
 623                 i = 0;
 624                 if(n > 1) {
 625                         int di;
 626                         unsigned int dui;
 627                         Window dummy;
 628                         if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
 629                                 for(i = 0; i < n; i++)
 630                                         if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
 631                                                 break;
 632                 }
 633                 x = info[i].x_org;
 634                 y = topbar ? info[i].y_org : info[i].y_org + info[i].height - mh;
 635                 mw = info[i].width;
 636                 XFree(info);
 637         }
 638         else
 639 #endif
 640         {
 641                 x = 0;
 642                 y = topbar ? 0 : DisplayHeight(dpy, screen) - mh;
 643                 mw = DisplayWidth(dpy, screen);
 644         }
 645
 646         win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
 647                         DefaultDepth(dpy, screen), CopyFromParent,
 648                         DefaultVisual(dpy, screen),
 649                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
 650
 651         /* pixmap */
 652         dc.drawable = XCreatePixmap(dpy, root, mw, mh, DefaultDepth(dpy, screen));
 653         dc.gc = XCreateGC(dpy, root, 0, 0);
 654         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
 655         if(!dc.font.set)
 656                 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
 657         if(maxname)
 658                 cmdw = textw(maxname);
 659         if(cmdw > mw / 3)
 660                 cmdw = mw / 3;
 661         if(prompt)
 662                 promptw = textw(prompt);
 663         if(promptw > mw / 5)
 664                 promptw = mw / 5;
 665         text[0] = 0;
 666         match(text);
 667         XMapRaised(dpy, win);
 668 }
 669
 670 int
 671 textnw(const char *text, unsigned int len) {
 672         XRectangle r;
 673
 674         if(dc.font.set) {
 675                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
 676                 return r.width;
 677         }
 678         return XTextWidth(dc.font.xfont, text, len);
 679 }
 680
 681 int
 682 textw(const char *text) {
 683         return textnw(text, strlen(text)) + dc.font.height;
 684 }
 685
 686 int
 687 main(int argc, char *argv[]) {
 688         unsigned int i;
 689         Bool topbar = True;
 690
 691         /* command line args */
 692         for(i = 1; i < argc; i++)
 693                 if(!strcmp(argv[i], "-i")) {
 694                         fstrncmp = strncasecmp;
 695                         fstrstr = cistrstr;
 696                 }
 697                 else if(!strcmp(argv[i], "-b"))
 698                         topbar = False;
 699                 else if(!strcmp(argv[i], "-fn")) {
 700                         if(++i < argc) font = argv[i];
 701                 }
 702                 else if(!strcmp(argv[i], "-nb")) {
 703                         if(++i < argc) normbgcolor = argv[i];
 704                 }
 705                 else if(!strcmp(argv[i], "-nf")) {
 706                         if(++i < argc) normfgcolor = argv[i];
 707                 }
 708                 else if(!strcmp(argv[i], "-p")) {
 709                         if(++i < argc) prompt = argv[i];
 710                 }
 711                 else if(!strcmp(argv[i], "-sb")) {
 712                         if(++i < argc) selbgcolor = argv[i];
 713                 }
 714                 else if(!strcmp(argv[i], "-sf")) {
 715                         if(++i < argc) selfgcolor = argv[i];
 716                 }
 717                 else if(!strcmp(argv[i], "-v"))
 718                         eprint("dmenu-"VERSION", © 2006-2008 dmenu engineers, see LICENSE for details\n");
 719                 else
 720                         eprint("usage: dmenu [-i] [-b] [-fn <font>] [-nb <color>] [-nf <color>]\n"
 721                                "             [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
 722         if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 723                 fprintf(stderr, "warning: no locale support\n");
 724         if(!(dpy = XOpenDisplay(0)))
 725                 eprint("dmenu: cannot open display\n");
 726         screen = DefaultScreen(dpy);
 727         root = RootWindow(dpy, screen);
 728
 729         if(isatty(STDIN_FILENO)) {
 730                 readstdin();
 731                 running = grabkeyboard();
 732         }
 733         else { /* prevent keypress loss */
 734                 running = grabkeyboard();
 735                 readstdin();
 736         }
 737
 738         setup(topbar);
 739         drawmenu();
 740         XSync(dpy, False);
 741         run();
 742         cleanup();
 743         XCloseDisplay(dpy);
 744         return ret;
 745 }