pinentry-dmenu

yet another pinentry-dmenu implementation
git clone git://git.ckyln.com/pinentry-dmenu.git
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dmenu.c (19260B)


      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 #include <unistd.h>
     10 
     11 #include <X11/Xlib.h>
     12 #include <X11/Xatom.h>
     13 #include <X11/Xutil.h>
     14 #ifdef XINERAMA
     15 #include <X11/extensions/Xinerama.h>
     16 #endif
     17 #include <X11/Xft/Xft.h>
     18 
     19 #include "drw.h"
     20 #include "util.h"
     21 
     22 /* macros */
     23 #define INTERSECT(x,y,w,h,r)  (MAX(0, MIN((x)+(w),(r).x_org+(r).width)  - MAX((x),(r).x_org)) \
     24                              * MAX(0, MIN((y)+(h),(r).y_org+(r).height) - MAX((y),(r).y_org)))
     25 #define LENGTH(X)             (sizeof X / sizeof X[0])
     26 #define TEXTW(X)              (drw_fontset_getwidth(drw, (X)) + lrpad)
     27 
     28 /* enums */
     29 enum { SchemeNorm, SchemeSel, SchemeOut, SchemeLast }; /* color schemes */
     30 
     31 struct item {
     32 	char *text;
     33 	struct item *left, *right;
     34 	int out;
     35 };
     36 
     37 static char text[BUFSIZ] = "";
     38 static char *embed;
     39 static int bh, mw, mh;
     40 static int inputw = 0, promptw, passwd = 0;
     41 static int lrpad; /* sum of left and right padding */
     42 static size_t cursor;
     43 static struct item *items = NULL;
     44 static struct item *matches, *matchend;
     45 static struct item *prev, *curr, *next, *sel;
     46 static int mon = -1, screen;
     47 
     48 static Atom clip, utf8;
     49 static Display *dpy;
     50 static Window root, parentwin, win;
     51 static XIC xic;
     52 
     53 static Drw *drw;
     54 static Clr *scheme[SchemeLast];
     55 
     56 #include "config.h"
     57 
     58 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
     59 static char *(*fstrstr)(const char *, const char *) = strstr;
     60 
     61 static void
     62 appenditem(struct item *item, struct item **list, struct item **last)
     63 {
     64 	if (*last)
     65 		(*last)->right = item;
     66 	else
     67 		*list = item;
     68 
     69 	item->left = *last;
     70 	item->right = NULL;
     71 	*last = item;
     72 }
     73 
     74 static void
     75 calcoffsets(void)
     76 {
     77 	int i, n;
     78 
     79 	if (lines > 0)
     80 		n = lines * bh;
     81 	else
     82 		n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
     83 	/* calculate which items will begin the next page and previous page */
     84 	for (i = 0, next = curr; next; next = next->right)
     85 		if ((i += (lines > 0) ? bh : MIN(TEXTW(next->text), n)) > n)
     86 			break;
     87 	for (i = 0, prev = curr; prev && prev->left; prev = prev->left)
     88 		if ((i += (lines > 0) ? bh : MIN(TEXTW(prev->left->text), n)) > n)
     89 			break;
     90 }
     91 
     92 static void
     93 cleanup(void)
     94 {
     95 	size_t i;
     96 
     97 	XUngrabKey(dpy, AnyKey, AnyModifier, root);
     98 	for (i = 0; i < SchemeLast; i++)
     99 		free(scheme[i]);
    100 	drw_free(drw);
    101 	XSync(dpy, False);
    102 	XCloseDisplay(dpy);
    103 }
    104 
    105 static char *
    106 cistrstr(const char *s, const char *sub)
    107 {
    108 	size_t len;
    109 
    110 	for (len = strlen(sub); *s; s++)
    111 		if (!strncasecmp(s, sub, len))
    112 			return (char *)s;
    113 	return NULL;
    114 }
    115 
    116 static int
    117 drawitem(struct item *item, int x, int y, int w)
    118 {
    119 	if (item == sel)
    120 		drw_setscheme(drw, scheme[SchemeSel]);
    121 	else if (item->out)
    122 		drw_setscheme(drw, scheme[SchemeOut]);
    123 	else
    124 		drw_setscheme(drw, scheme[SchemeNorm]);
    125 
    126 	return drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
    127 }
    128 
    129 static void
    130 drawmenu(void)
    131 {
    132 	unsigned int curpos;
    133 	struct item *item;
    134 	int x = 0, y = 0, w;
    135  char *censort;
    136 
    137 	drw_setscheme(drw, scheme[SchemeNorm]);
    138 	drw_rect(drw, 0, 0, mw, mh, 1, 1);
    139 
    140 	if (prompt && *prompt) {
    141 		drw_setscheme(drw, scheme[SchemeSel]);
    142 		x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
    143 	}
    144 	/* draw input field */
    145 	w = (lines > 0 || !matches) ? mw - x : inputw;
    146 	drw_setscheme(drw, scheme[SchemeNorm]);
    147 	if (passwd) {
    148 	        censort = ecalloc(1, sizeof(text));
    149 		memset(censort, '.', strlen(text));
    150 		drw_text(drw, x, 0, w, bh, lrpad / 2, censort, 0);
    151 		free(censort);
    152 	} else drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
    153 
    154 	curpos = TEXTW(text) - TEXTW(&text[cursor]);
    155 	if ((curpos += lrpad / 2 - 1) < w) {
    156 		drw_setscheme(drw, scheme[SchemeNorm]);
    157 		drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
    158 	}
    159 
    160 	if (lines > 0) {
    161 		/* draw vertical list */
    162 		for (item = curr; item != next; item = item->right)
    163 			drawitem(item, x, y += bh, mw - x);
    164 	} else if (matches) {
    165 		/* draw horizontal list */
    166 		x += inputw;
    167 		w = TEXTW("<");
    168 		if (curr->left) {
    169 			drw_setscheme(drw, scheme[SchemeNorm]);
    170 			drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
    171 		}
    172 		x += w;
    173 		for (item = curr; item != next; item = item->right)
    174 			x = drawitem(item, x, 0, MIN(TEXTW(item->text), mw - x - TEXTW(">")));
    175 		if (next) {
    176 			w = TEXTW(">");
    177 			drw_setscheme(drw, scheme[SchemeNorm]);
    178 			drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
    179 		}
    180 	}
    181 	drw_map(drw, win, 0, 0, mw, mh);
    182 }
    183 
    184 static void
    185 grabfocus(void)
    186 {
    187 	struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000  };
    188 	Window focuswin;
    189 	int i, revertwin;
    190 
    191 	for (i = 0; i < 100; ++i) {
    192 		XGetInputFocus(dpy, &focuswin, &revertwin);
    193 		if (focuswin == win)
    194 			return;
    195 		XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
    196 		nanosleep(&ts, NULL);
    197 	}
    198 	die("cannot grab focus");
    199 }
    200 
    201 static void
    202 grabkeyboard(void)
    203 {
    204 	struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000  };
    205 	int i;
    206 
    207 	if (embed)
    208 		return;
    209 	/* try to grab keyboard, we may have to wait for another process to ungrab */
    210 	for (i = 0; i < 1000; i++) {
    211 		if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
    212 		                  GrabModeAsync, CurrentTime) == GrabSuccess)
    213 			return;
    214 		nanosleep(&ts, NULL);
    215 	}
    216 	die("cannot grab keyboard");
    217 }
    218 
    219 static void
    220 match(void)
    221 {
    222 	static char **tokv = NULL;
    223 	static int tokn = 0;
    224 
    225 	char buf[sizeof text], *s;
    226 	int i, tokc = 0;
    227 	size_t len, textsize;
    228 	struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
    229 
    230 	strcpy(buf, text);
    231 	/* separate input text into tokens to be matched individually */
    232 	for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
    233 		if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
    234 			die("cannot realloc %u bytes:", tokn * sizeof *tokv);
    235 	len = tokc ? strlen(tokv[0]) : 0;
    236 
    237 	matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
    238 	textsize = strlen(text) + 1;
    239 	for (item = items; item && item->text; item++) {
    240 		for (i = 0; i < tokc; i++)
    241 			if (!fstrstr(item->text, tokv[i]))
    242 				break;
    243 		if (i != tokc) /* not all tokens match */
    244 			continue;
    245 		/* exact matches go first, then prefixes, then substrings */
    246 		if (!tokc || !fstrncmp(text, item->text, textsize))
    247 			appenditem(item, &matches, &matchend);
    248 		else if (!fstrncmp(tokv[0], item->text, len))
    249 			appenditem(item, &lprefix, &prefixend);
    250 		else
    251 			appenditem(item, &lsubstr, &substrend);
    252 	}
    253 	if (lprefix) {
    254 		if (matches) {
    255 			matchend->right = lprefix;
    256 			lprefix->left = matchend;
    257 		} else
    258 			matches = lprefix;
    259 		matchend = prefixend;
    260 	}
    261 	if (lsubstr) {
    262 		if (matches) {
    263 			matchend->right = lsubstr;
    264 			lsubstr->left = matchend;
    265 		} else
    266 			matches = lsubstr;
    267 		matchend = substrend;
    268 	}
    269 	curr = sel = matches;
    270 	calcoffsets();
    271 }
    272 
    273 static void
    274 insert(const char *str, ssize_t n)
    275 {
    276 	if (strlen(text) + n > sizeof text - 1)
    277 		return;
    278 	/* move existing text out of the way, insert new text, and update cursor */
    279 	memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
    280 	if (n > 0)
    281 		memcpy(&text[cursor], str, n);
    282 	cursor += n;
    283 	match();
    284 }
    285 
    286 static size_t
    287 nextrune(int inc)
    288 {
    289 	ssize_t n;
    290 
    291 	/* return location of next utf8 rune in the given direction (+1 or -1) */
    292 	for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
    293 		;
    294 	return n;
    295 }
    296 
    297 static void
    298 movewordedge(int dir)
    299 {
    300 	if (dir < 0) { /* move cursor to the start of the word*/
    301 		while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
    302 			cursor = nextrune(-1);
    303 		while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
    304 			cursor = nextrune(-1);
    305 	} else { /* move cursor to the end of the word */
    306 		while (text[cursor] && strchr(worddelimiters, text[cursor]))
    307 			cursor = nextrune(+1);
    308 		while (text[cursor] && !strchr(worddelimiters, text[cursor]))
    309 			cursor = nextrune(+1);
    310 	}
    311 }
    312 
    313 static void
    314 keypress(XKeyEvent *ev)
    315 {
    316 	char buf[32];
    317 	int len;
    318 	KeySym ksym;
    319 	Status status;
    320 
    321 	len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
    322 	switch (status) {
    323 	default: /* XLookupNone, XBufferOverflow */
    324 		return;
    325 	case XLookupChars:
    326 		goto insert;
    327 	case XLookupKeySym:
    328 	case XLookupBoth:
    329 		break;
    330 	}
    331 
    332 	if (ev->state & ControlMask) {
    333 		switch(ksym) {
    334 		case XK_a: ksym = XK_Home;      break;
    335 		case XK_b: ksym = XK_Left;      break;
    336 		case XK_c: ksym = XK_Escape;    break;
    337 		case XK_d: ksym = XK_Delete;    break;
    338 		case XK_e: ksym = XK_End;       break;
    339 		case XK_f: ksym = XK_Right;     break;
    340 		case XK_g: ksym = XK_Escape;    break;
    341 		case XK_h: ksym = XK_BackSpace; break;
    342 		case XK_i: ksym = XK_Tab;       break;
    343 		case XK_j: /* fallthrough */
    344 		case XK_J: /* fallthrough */
    345 		case XK_m: /* fallthrough */
    346 		case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
    347 		case XK_n: ksym = XK_Down;      break;
    348 		case XK_p: ksym = XK_Up;        break;
    349 
    350 		case XK_k: /* delete right */
    351 			text[cursor] = '\0';
    352 			match();
    353 			break;
    354 		case XK_u: /* delete left */
    355 			insert(NULL, 0 - cursor);
    356 			break;
    357 		case XK_w: /* delete word */
    358 			while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
    359 				insert(NULL, nextrune(-1) - cursor);
    360 			while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
    361 				insert(NULL, nextrune(-1) - cursor);
    362 			break;
    363 		case XK_y: /* paste selection */
    364 		case XK_Y:
    365 			XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
    366 			                  utf8, utf8, win, CurrentTime);
    367 			return;
    368 		case XK_Left:
    369 			movewordedge(-1);
    370 			goto draw;
    371 		case XK_Right:
    372 			movewordedge(+1);
    373 			goto draw;
    374 		case XK_Return:
    375 		case XK_KP_Enter:
    376 			break;
    377 		case XK_bracketleft:
    378 			cleanup();
    379 			exit(1);
    380 		default:
    381 			return;
    382 		}
    383 	} else if (ev->state & Mod1Mask) {
    384 		switch(ksym) {
    385 		case XK_b:
    386 			movewordedge(-1);
    387 			goto draw;
    388 		case XK_f:
    389 			movewordedge(+1);
    390 			goto draw;
    391 		case XK_g: ksym = XK_Home;  break;
    392 		case XK_G: ksym = XK_End;   break;
    393 		case XK_h: ksym = XK_Up;    break;
    394 		case XK_j: ksym = XK_Next;  break;
    395 		case XK_k: ksym = XK_Prior; break;
    396 		case XK_l: ksym = XK_Down;  break;
    397 		default:
    398 			return;
    399 		}
    400 	}
    401 
    402 	switch(ksym) {
    403 	default:
    404 insert:
    405 		if (!iscntrl(*buf))
    406 			insert(buf, len);
    407 		break;
    408 	case XK_Delete:
    409 		if (text[cursor] == '\0')
    410 			return;
    411 		cursor = nextrune(+1);
    412 		/* fallthrough */
    413 	case XK_BackSpace:
    414 		if (cursor == 0)
    415 			return;
    416 		insert(NULL, nextrune(-1) - cursor);
    417 		break;
    418 	case XK_End:
    419 		if (text[cursor] != '\0') {
    420 			cursor = strlen(text);
    421 			break;
    422 		}
    423 		if (next) {
    424 			/* jump to end of list and position items in reverse */
    425 			curr = matchend;
    426 			calcoffsets();
    427 			curr = prev;
    428 			calcoffsets();
    429 			while (next && (curr = curr->right))
    430 				calcoffsets();
    431 		}
    432 		sel = matchend;
    433 		break;
    434 	case XK_Escape:
    435 		cleanup();
    436 		exit(1);
    437 	case XK_Home:
    438 		if (sel == matches) {
    439 			cursor = 0;
    440 			break;
    441 		}
    442 		sel = curr = matches;
    443 		calcoffsets();
    444 		break;
    445 	case XK_Left:
    446 		if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
    447 			cursor = nextrune(-1);
    448 			break;
    449 		}
    450 		if (lines > 0)
    451 			return;
    452 		/* fallthrough */
    453 	case XK_Up:
    454 		if (sel && sel->left && (sel = sel->left)->right == curr) {
    455 			curr = prev;
    456 			calcoffsets();
    457 		}
    458 		break;
    459 	case XK_Next:
    460 		if (!next)
    461 			return;
    462 		sel = curr = next;
    463 		calcoffsets();
    464 		break;
    465 	case XK_Prior:
    466 		if (!prev)
    467 			return;
    468 		sel = curr = prev;
    469 		calcoffsets();
    470 		break;
    471 	case XK_Return:
    472 	case XK_KP_Enter:
    473 		puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
    474 		if (!(ev->state & ControlMask)) {
    475 			cleanup();
    476 			exit(0);
    477 		}
    478 		if (sel)
    479 			sel->out = 1;
    480 		break;
    481 	case XK_Right:
    482 		if (text[cursor] != '\0') {
    483 			cursor = nextrune(+1);
    484 			break;
    485 		}
    486 		if (lines > 0)
    487 			return;
    488 		/* fallthrough */
    489 	case XK_Down:
    490 		if (sel && sel->right && (sel = sel->right) == next) {
    491 			curr = next;
    492 			calcoffsets();
    493 		}
    494 		break;
    495 	case XK_Tab:
    496 		if (!sel)
    497 			return;
    498 		strncpy(text, sel->text, sizeof text - 1);
    499 		text[sizeof text - 1] = '\0';
    500 		cursor = strlen(text);
    501 		match();
    502 		break;
    503 	}
    504 
    505 draw:
    506 	drawmenu();
    507 }
    508 
    509 static void
    510 paste(void)
    511 {
    512 	char *p, *q;
    513 	int di;
    514 	unsigned long dl;
    515 	Atom da;
    516 
    517 	/* we have been given the current selection, now insert it into input */
    518 	if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
    519 	                   utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
    520 	    == Success && p) {
    521 		insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
    522 		XFree(p);
    523 	}
    524 	drawmenu();
    525 }
    526 
    527 static void
    528 readstdin(void)
    529 {
    530 	char buf[sizeof text], *p;
    531 	size_t i, imax = 0, size = 0;
    532 	unsigned int tmpmax = 0;
    533 
    534   if(passwd){
    535     inputw = lines = 0;
    536     return;
    537   }
    538 
    539 	/* read each line from stdin and add it to the item list */
    540 	for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
    541 		if (i + 1 >= size / sizeof *items)
    542 			if (!(items = realloc(items, (size += BUFSIZ))))
    543 				die("cannot realloc %u bytes:", size);
    544 		if ((p = strchr(buf, '\n')))
    545 			*p = '\0';
    546 		if (!(items[i].text = strdup(buf)))
    547 			die("cannot strdup %u bytes:", strlen(buf) + 1);
    548 		items[i].out = 0;
    549 		drw_font_getexts(drw->fonts, buf, strlen(buf), &tmpmax, NULL);
    550 		if (tmpmax > inputw) {
    551 			inputw = tmpmax;
    552 			imax = i;
    553 		}
    554 	}
    555 	if (items)
    556 		items[i].text = NULL;
    557 	inputw = items ? TEXTW(items[imax].text) : 0;
    558 	lines = MIN(lines, i);
    559 }
    560 
    561 static void
    562 run(void)
    563 {
    564 	XEvent ev;
    565 
    566 	while (!XNextEvent(dpy, &ev)) {
    567 		if (XFilterEvent(&ev, None))
    568 			continue;
    569 		switch(ev.type) {
    570 		case Expose:
    571 			if (ev.xexpose.count == 0)
    572 				drw_map(drw, win, 0, 0, mw, mh);
    573 			break;
    574 		case FocusIn:
    575 			/* regrab focus from parent window */
    576 			if (ev.xfocus.window != win)
    577 				grabfocus();
    578 			break;
    579 		case KeyPress:
    580 			keypress(&ev.xkey);
    581 			break;
    582 		case SelectionNotify:
    583 			if (ev.xselection.property == utf8)
    584 				paste();
    585 			break;
    586 		case VisibilityNotify:
    587 			if (ev.xvisibility.state != VisibilityUnobscured)
    588 				XRaiseWindow(dpy, win);
    589 			break;
    590 		}
    591 	}
    592 }
    593 
    594 static void
    595 setup(void)
    596 {
    597 	int x, y, i, j;
    598 	unsigned int du;
    599 	XSetWindowAttributes swa;
    600 	XIM xim;
    601 	Window w, dw, *dws;
    602 	XWindowAttributes wa;
    603 	XClassHint ch = {"dmenu", "dmenu"};
    604 #ifdef XINERAMA
    605 	XineramaScreenInfo *info;
    606 	Window pw;
    607 	int a, di, n, area = 0;
    608 #endif
    609 	/* init appearance */
    610 	for (j = 0; j < SchemeLast; j++)
    611 		scheme[j] = drw_scm_create(drw, colors[j], 2);
    612 
    613 	clip = XInternAtom(dpy, "CLIPBOARD",   False);
    614 	utf8 = XInternAtom(dpy, "UTF8_STRING", False);
    615 
    616 	/* calculate menu geometry */
    617 	bh = drw->fonts->h + 2;
    618 	lines = MAX(lines, 0);
    619 	mh = (lines + 1) * bh;
    620 #ifdef XINERAMA
    621 	i = 0;
    622 	if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
    623 		XGetInputFocus(dpy, &w, &di);
    624 		if (mon >= 0 && mon < n)
    625 			i = mon;
    626 		else if (w != root && w != PointerRoot && w != None) {
    627 			/* find top-level window containing current input focus */
    628 			do {
    629 				if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
    630 					XFree(dws);
    631 			} while (w != root && w != pw);
    632 			/* find xinerama screen with which the window intersects most */
    633 			if (XGetWindowAttributes(dpy, pw, &wa))
    634 				for (j = 0; j < n; j++)
    635 					if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
    636 						area = a;
    637 						i = j;
    638 					}
    639 		}
    640 		/* no focused window is on screen, so use pointer location instead */
    641 		if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
    642 			for (i = 0; i < n; i++)
    643 				if (INTERSECT(x, y, 1, 1, info[i]))
    644 					break;
    645 
    646 		x = info[i].x_org;
    647 		y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
    648 		mw = info[i].width;
    649 		XFree(info);
    650 	} else
    651 #endif
    652 	{
    653 		if (!XGetWindowAttributes(dpy, parentwin, &wa))
    654 			die("could not get embedding window attributes: 0x%lx",
    655 			    parentwin);
    656 		x = 0;
    657 		y = topbar ? 0 : wa.height - mh;
    658 		mw = wa.width;
    659 	}
    660 	promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
    661 	inputw = MIN(inputw, mw/3);
    662 	match();
    663 
    664 	/* create menu window */
    665 	swa.override_redirect = True;
    666 	swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
    667 	swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
    668 	win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
    669 	                    CopyFromParent, CopyFromParent, CopyFromParent,
    670 	                    CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
    671 	XSetClassHint(dpy, win, &ch);
    672 
    673 	/* open input methods */
    674 	xim = XOpenIM(dpy, NULL, NULL, NULL);
    675 	xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
    676 	                XNClientWindow, win, XNFocusWindow, win, NULL);
    677 
    678 	XMapRaised(dpy, win);
    679 	XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
    680 	if (embed) {
    681 		XSelectInput(dpy, parentwin, FocusChangeMask);
    682 		if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
    683 			for (i = 0; i < du && dws[i] != win; ++i)
    684 				XSelectInput(dpy, dws[i], FocusChangeMask);
    685 			XFree(dws);
    686 		}
    687 		grabfocus();
    688 	}
    689 	drw_resize(drw, mw, mh);
    690 	drawmenu();
    691 }
    692 
    693 static void
    694 usage(void)
    695 {
    696 	fputs("usage: dmenu [-bfiPv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
    697 	      "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n", stderr);
    698 	exit(1);
    699 }
    700 
    701 int
    702 main(int argc, char *argv[])
    703 {
    704 	XWindowAttributes wa;
    705 	int i, fast = 0;
    706 
    707 	for (i = 1; i < argc; i++)
    708 		/* these options take no arguments */
    709 		if (!strcmp(argv[i], "-v")) {      /* prints version information */
    710 			puts("dmenu-"VERSION);
    711 			exit(0);
    712 		} else if (!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
    713 			topbar = 0;
    714 		else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
    715 			fast = 1;
    716 		else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
    717 			fstrncmp = strncasecmp;
    718 			fstrstr = cistrstr;
    719 		} else if (!strcmp(argv[i], "-P"))   /* is the input a password */
    720 		        passwd = 1;
    721 		else if (i + 1 == argc)
    722 			usage();
    723 		/* these options take one argument */
    724 		else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
    725 			lines = atoi(argv[++i]);
    726 		else if (!strcmp(argv[i], "-m"))
    727 			mon = atoi(argv[++i]);
    728 		else if (!strcmp(argv[i], "-p"))   /* adds prompt to left of input field */
    729 			prompt = argv[++i];
    730 		else if (!strcmp(argv[i], "-fn"))  /* font or font set */
    731 			fonts[0] = argv[++i];
    732 		else if (!strcmp(argv[i], "-nb"))  /* normal background color */
    733 			colors[SchemeNorm][ColBg] = argv[++i];
    734 		else if (!strcmp(argv[i], "-nf"))  /* normal foreground color */
    735 			colors[SchemeNorm][ColFg] = argv[++i];
    736 		else if (!strcmp(argv[i], "-sb"))  /* selected background color */
    737 			colors[SchemeSel][ColBg] = argv[++i];
    738 		else if (!strcmp(argv[i], "-sf"))  /* selected foreground color */
    739 			colors[SchemeSel][ColFg] = argv[++i];
    740 		else if (!strcmp(argv[i], "-w"))   /* embedding window id */
    741 			embed = argv[++i];
    742 		else
    743 			usage();
    744 
    745 	if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
    746 		fputs("warning: no locale support\n", stderr);
    747 	if (!XSetLocaleModifiers(""))
    748 		fputs("warning: no locale modifiers support\n", stderr);
    749 	if (!(dpy = XOpenDisplay(NULL)))
    750 		die("cannot open display");
    751 	screen = DefaultScreen(dpy);
    752 	root = RootWindow(dpy, screen);
    753 	if (!embed || !(parentwin = strtol(embed, NULL, 0)))
    754 		parentwin = root;
    755 	if (!XGetWindowAttributes(dpy, parentwin, &wa))
    756 		die("could not get embedding window attributes: 0x%lx",
    757 		    parentwin);
    758 	drw = drw_create(dpy, screen, root, wa.width, wa.height);
    759 	if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
    760 		die("no fonts could be loaded.");
    761 	lrpad = drw->fonts->h;
    762 
    763 #ifdef __OpenBSD__
    764 	if (pledge("stdio rpath", NULL) == -1)
    765 		die("pledge");
    766 #endif
    767 
    768 	if (fast && !isatty(0)) {
    769 		grabkeyboard();
    770 		readstdin();
    771 	} else {
    772 		readstdin();
    773 		grabkeyboard();
    774 	}
    775 	setup();
    776 	run();
    777 
    778 	return 1; /* unreachable */
    779 }