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Date:: Thu Oct 4 19:36:29 2018 UTC
Message:: I like OpenBSD's style(9)
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1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <string.h>		/* strdup, strlen */
4 #include <ctype.h>		/* isalnum */
5 #include <locale.h>		/* setlocale */
6 #include <unistd.h>
7 #include <sysexits.h>
8 #include <stdbool.h>
9 #include <limits.h>
10 #include <errno.h>
11 #include <unistd.h>
12 #include <stdint.h>
13 
14 #include <X11/Xlib.h>
15 #include <X11/Xutil.h>
16 #include <X11/Xresource.h>
17 #include <X11/Xcms.h>
18 #include <X11/keysym.h>
19 
20 #ifdef USE_XINERAMA
21 # include <X11/extensions/Xinerama.h>
22 #endif
23 
24 #ifdef USE_XFT
25 # include <X11/Xft/Xft.h>
26 #endif
27 
28 #ifndef VERSION
29 # define VERSION "unknown"
30 #endif
31 
32 #define resname "MyMenu"
33 #define resclass "mymenu"
34 
35 #define SYM_BUF_SIZE 4
36 
37 #ifdef USE_XFT
38 # define default_fontname "monospace"
39 #else
40 # define default_fontname "fixed"
41 #endif
42 
43 #define ARGS "Aahmve:p:P:l:f:W:H:x:y:b:B:t:T:c:C:s:S:d:"
44 
45 #define MIN(a, b) ((a) < (b) ? (a) : (b))
46 #define MAX(a, b) ((a) > (b) ? (a) : (b))
47 
48 #define EXPANDBITS(x)   ((0xffff * x) / 0xff)
49 
50 /*
51  * If we don't have or we don't want an "ignore case" completion
52  * style, fall back to `strstr(3)`
53  */
54 #ifndef USE_STRCASESTR
55 # define strcasestr strstr
56 #endif
57 
58 /* The number of char to read */
59 #define STDIN_CHUNKS 64
60 
61 /* The number of lines to allocate in advance */
62 #define LINES_CHUNK 32
63 
64 /* Abort on NULL */
65 #define check_allocation(a) {				\
66     if (a == NULL) {					\
67       fprintf(stderr, "Could not allocate memory\n");	\
68       abort();						\
69     }							\
70   }
71 
72 #define inner_height(r) (r->height - r->border_n - r->border_s)
73 #define inner_width(r)  (r->width  - r->border_e - r->border_w)
74 
75 /* The states of the event loop */
76 enum state {LOOPING, OK_LOOP, OK, ERR};
77 
78 /* 
79  * For the drawing-related function. The text to be rendere could be
80  * the prompt, a completion or a highlighted completion
81  */
82 enum text_type {PROMPT, COMPL, COMPL_HIGH};
83 
84 /* These are the possible action to be performed after user input. */
85 enum action {
86 	EXIT,
87 	CONFIRM,
88 	CONFIRM_CONTINUE,
89 	NEXT_COMPL,
90 	PREV_COMPL,
91 	DEL_CHAR,
92 	DEL_WORD,
93 	DEL_LINE,
94 	ADD_CHAR,
95 	TOGGLE_FIRST_SELECTED
96 };
97 
98 /* A big set of values that needs to be carried around for drawing. A
99 big struct to rule them all */
100 struct rendering {
101 	Display		*d;	/* Connection to xorg */
102 	Window		w;
103 	int		width;
104 	int		height;
105 	int		padding;
106 	int		x_zero; /* the "zero" on the x axis (may not be exactly 0 'cause the borders) */
107 	int		y_zero; /* like x_zero but for the y axis */
108 
109 	size_t		offset; /* scroll offset */
110 
111 	bool		free_text;
112 	bool		first_selected;
113 	bool		multiple_select;
114 
115 	/* four border width */
116 	int		border_n;
117 	int		border_e;
118 	int		border_s;
119 	int		border_w;
120 
121 	bool		horizontal_layout;
122 
123 	/* prompt */
124 	char		*ps1;
125 	int		ps1len;
126 
127 	XIC		xic;
128 
129 	/* colors */
130 	GC		prompt;
131 	GC		prompt_bg;
132 	GC		completion;
133 	GC		completion_bg;
134 	GC		completion_highlighted;
135 	GC		completion_highlighted_bg;
136 	GC		border_n_bg;
137 	GC		border_e_bg;
138 	GC		border_s_bg;
139 	GC		border_w_bg;
140 #ifdef USE_XFT
141 	XftFont		*font;
142 	XftDraw		*xftdraw;
143 	XftColor	xft_prompt;
144 	XftColor	xft_completion;
145 	XftColor	xft_completion_highlighted;
146 #else
147 	XFontSet	font;
148 #endif
149 };
150 
151 struct completion {
152 	char	*completion;
153 	char	*rcompletion;
154 };
155 
156 /* Wrap the linked list of completions */
157 struct completions {
158 	struct completion	*completions;
159 	ssize_t			selected;
160 	size_t			length;
161 };
162 
163 /* idea stolen from lemonbar. ty lemonboy */
164 typedef union {
165 	struct {
166 		uint8_t	b;
167 		uint8_t	g;
168 		uint8_t	r;
169 		uint8_t	a;
170 	};
171 	uint32_t	v;
172 } rgba_t;
173 
174 /* Return a newly allocated (and empty) completion list */
175 struct completions *
176 compls_new(size_t length)
177 {
178 	struct completions *cs = malloc(sizeof(struct completions));
179 
180 	if (cs == NULL)
181 		return cs;
182 
183 	cs->completions = calloc(length, sizeof(struct completion));
184 	if (cs->completions == NULL) {
185 		free(cs);
186 		return NULL;
187 	}
188 
189 	cs->selected = -1;
190 	cs->length = length;
191 	return cs;
192 }
193 
194 /* Delete the wrapper and the whole list */
195 void
196 compls_delete(struct completions *cs)
197 {
198 	if (cs == NULL)
199 		return;
200 
201 	free(cs->completions);
202 	free(cs);
203 }
204 
205 /* 
206  * Create a completion list from a text and the list of possible
207  * completions (null terminated). Expects a non-null `cs'. `lines' and
208  * `vlines' should have the same length OR `vlines' is NULL.
209  */
210 void
211 filter(struct completions *cs, char *text, char **lines, char **vlines)
212 {
213 	size_t	index = 0;
214 	size_t	matching = 0;
215 
216 	if (vlines == NULL)
217 		vlines = lines;
218 
219 	while (true) {
220 		if (lines[index] == NULL)
221 			break;
222 
223 		char *l = vlines[index] != NULL ? vlines[index] : lines[index];
224 
225 		if (strcasestr(l, text) != NULL) {
226 			struct completion *c = &cs->completions[matching];
227 			c->completion  = l;
228 			c->rcompletion = lines[index];
229 			matching++;
230 		}
231 
232 		index++;
233 	}
234 	cs->length = matching;
235 	cs->selected = -1;
236 }
237 
238 /* Update the given completion */
239 void
240 update_completions(struct completions *cs, char *text, char **lines, char **vlines, bool first_selected)
241 {
242 	filter(cs, text, lines, vlines);
243 	if (first_selected && cs->length > 0)
244 		cs->selected = 0;
245 }
246 
247 /*
248  * Select the next or previous selection and update some state. `text'
249  * will be updated with the text of the completion and `textlen' with
250  * the new length. If the memory cannot be allocated `status' will be
251  * set to `ERR'.
252  */
253 void
254 complete(struct completions *cs, bool first_selected, bool p, char **text, int *textlen, enum state *status)
255 {
256 	struct completion	*n;
257 	int			index;
258 
259 	if (cs == NULL || cs->length == 0)
260 		return;
261 
262 	/*
263 	 * If the first is always selected and the first entry is
264 	 * different from the text, expand the text and return
265 	 */
266 	if (first_selected
267 	    && cs->selected == 0
268 	    && strcmp(cs->completions->completion, *text) != 0
269 	    && !p) {
270 		free(*text);
271 		*text = strdup(cs->completions->completion);
272 		if (text == NULL) {
273 			*status = ERR;
274 			return;
275 		}
276 		*textlen = strlen(*text);
277 		return;
278 	}
279 
280 	index = cs->selected;
281 
282 	if (index == -1 && p)
283 		index = 0;
284 	index = cs->selected = (cs->length + (p ? index - 1 : index + 1)) % cs->length;
285 
286 	n = &cs->completions[cs->selected];
287 
288 	free(*text);
289 	*text = strdup(n->completion);
290 	if (text == NULL) {
291 		fprintf(stderr, "Memory allocation error!\n");
292 		*status = ERR;
293 		return;
294 	}
295 	*textlen = strlen(*text);
296 }
297 
298 /* Push the character c at the end of the string pointed by p */
299 int
300 pushc(char **p, int maxlen, char c)
301 {
302 	int len = strnlen(*p, maxlen);
303 
304 	if (!(len < maxlen -2)) {
305 		char *newptr;
306 
307 		maxlen += maxlen >> 1;
308 		newptr = realloc(*p, maxlen);
309 		if (newptr == NULL) /* bad */
310 			return -1;
311 		*p = newptr;
312 	}
313 
314 	(*p)[len] = c;
315 	(*p)[len+1] = '\0';
316 	return maxlen;
317 }
318 
319 /* 
320  * Remove the last rune from the *UTF-8* string! This is different
321  * from just setting the last byte to 0 (in some cases ofc). Return a
322  * pointer (e) to the last nonzero char. If e < p then p is empty!
323  */
324 char *
325 popc(char *p)
326 {
327 	int len = strlen(p);
328 	char *e;
329 
330 	if (len == 0)
331 		return p;
332 
333 	e = p + len - 1;
334 
335 	do {
336 		char c = *e;
337 
338 		*e = 0;
339 		e--;
340 
341 		/*
342 		 * If c is a starting byte (11......) or is under
343 		 * U+007F we're done.
344 		 */
345 		if (((c & 0x80) && (c & 0x40)) || !(c & 0x80))
346 			break;
347 	} while (e >= p);
348 
349 	return e;
350 }
351 
352 /* Remove the last word plus trailing white spaces from the given string */
353 void
354 popw(char *w)
355 {
356 	int len;
357 	bool in_word;
358 
359 	len = strlen(w);
360 	if (len == 0)
361 		return;
362 
363 	in_word = true;
364 	while (true) {
365 		char *e = popc(w);
366 
367 		if (e < w)
368 			return;
369 
370 		if (in_word && isspace(*e))
371 			in_word = false;
372 
373 		if (!in_word && !isspace(*e))
374 			return;
375 	}
376 }
377 
378 /* 
379  * If the string is surrounded by quates (`"') remove them and replace
380  * every `\"' in the string with a single double-quote.
381  */
382 char *
383 normalize_str(const char *str)
384 {
385 	int len, p;
386 	char *s;
387 
388 	len = strlen(str);
389 	if (len == 0)
390 		return NULL;
391 
392 	s = calloc(len, sizeof(char));
393 	check_allocation(s);
394 	p = 0;
395 
396 	while (*str) {
397 		char c = *str;
398 
399 		if (*str == '\\') {
400 			if (*(str + 1)) {
401 				s[p] = *(str + 1);
402 				p++;
403 				str += 2; /* skip this and the next char */
404 				continue;
405 			} else
406 				break;
407 		}
408 		if (c == '"') {
409 			str++;	/* skip only this char */
410 			continue;
411 		}
412 		s[p] = c;
413 		p++;
414 		str++;
415 	}
416 
417 	return s;
418 }
419 
420 size_t
421 read_stdin(char **buf)
422 {
423 	size_t offset = 0;
424 	size_t len = STDIN_CHUNKS;
425 
426 	*buf = malloc(len * sizeof(char));
427 	if (*buf == NULL)
428 		goto err;
429 
430 	while (true) {
431 		ssize_t r;
432 		size_t i;
433 
434 		r = read(0, *buf + offset, STDIN_CHUNKS);
435 
436 		if (r < 1)
437 			return len;
438 
439 		offset += r;
440 
441 		len += STDIN_CHUNKS;
442 		*buf = realloc(*buf, len);
443 		if (*buf == NULL)
444 			goto err;
445 
446 		for (i = offset; i < len; ++i)
447 			(*buf)[i] = '\0';
448 	}
449 
450  err:
451 	fprintf(stderr, "Error in allocating memory for stdin.\n");
452 	exit(EX_UNAVAILABLE);
453 }
454 
455 size_t
456 readlines(char ***lns, char **buf)
457 {
458 	size_t len, ll, lines;
459 	bool in_line = false;
460 
461 	lines = 0;
462 
463 	*buf = NULL;
464 	len = read_stdin(buf);
465 
466 	ll = LINES_CHUNK;
467 	*lns = malloc(ll * sizeof(char*));
468 
469 	if (*lns == NULL)
470 		goto err;
471 
472 	for (size_t i = 0; i < len; i++) {
473 		char c = (*buf)[i];
474 
475 		if (c == '\0')
476 			break;
477 
478 		if (c == '\n')
479 			(*buf)[i] = '\0';
480 
481 		if (in_line && c == '\n')
482 			in_line = false;
483 
484 		if (!in_line && c != '\n') {
485 			in_line = true;
486 			(*lns)[lines] = (*buf) + i;
487 			lines++;
488 
489 			if (lines == ll) { // resize
490 				ll += LINES_CHUNK;
491 				*lns = realloc(*lns, ll * sizeof(char*));
492 				if (*lns == NULL)
493 					goto err;
494 			}
495 		}
496 	}
497 
498 	(*lns)[lines] = NULL;
499 
500 	return lines;
501 
502  err:
503 	fprintf(stderr, "Error in memory allocation.\n");
504 	exit(EX_UNAVAILABLE);
505 }
506 
507 /*
508  * Compute the dimensions of the string str once rendered.
509  * It'll return the width and set ret_width and ret_height if not NULL
510  */
511 int
512 text_extents(char *str, int len, struct rendering *r, int *ret_width, int *ret_height)
513 {
514 	int height;
515 	int width;
516 #ifdef USE_XFT
517 	XGlyphInfo gi;
518 	XftTextExtentsUtf8(r->d, r->font, str, len, &gi);
519 	height = r->font->ascent - r->font->descent;
520 	width = gi.width - gi.x;
521 #else
522 	XRectangle rect;
523 	XmbTextExtents(r->font, str, len, NULL, &rect);
524 	height = rect.height;
525 	width = rect.width;
526 #endif
527 	if (ret_width != NULL)  *ret_width = width;
528 	if (ret_height != NULL) *ret_height = height;
529 	return width;
530 }
531 
532 void
533 draw_string(char *str, int len, int x, int y, struct rendering *r, enum text_type tt)
534 {
535 #ifdef USE_XFT
536 	XftColor xftcolor;
537 	if (tt == PROMPT)     xftcolor = r->xft_prompt;
538 	if (tt == COMPL)      xftcolor = r->xft_completion;
539 	if (tt == COMPL_HIGH) xftcolor = r->xft_completion_highlighted;
540 
541 	XftDrawStringUtf8(r->xftdraw, &xftcolor, r->font, x, y, str, len);
542 #else
543 	GC gc;
544 	if (tt == PROMPT)     gc = r->prompt;
545 	if (tt == COMPL)      gc = r->completion;
546 	if (tt == COMPL_HIGH) gc = r->completion_highlighted;
547 	Xutf8DrawString(r->d, r->w, r->font, gc, x, y, str, len);
548 #endif
549 }
550 
551 /* Duplicate the string and substitute every space with a 'n` */
552 char *
553 strdupn(char *str)
554 {
555 	int len, i;
556 	char *dup;
557 
558 	len = strlen(str);
559 
560 	if (str == NULL || len == 0)
561 		return NULL;
562 
563 	dup = strdup(str);
564 	if (dup == NULL)
565 		return NULL;
566 
567 	for (i = 0; i < len; ++i)
568 		if (dup[i] == ' ')
569 			dup[i] = 'n';
570 
571 	return dup;
572 }
573 
574 /* |------------------|----------------------------------------------| */
575 /* | 20 char text     | completion | completion | completion | compl | */
576 /* |------------------|----------------------------------------------| */
577 void
578 draw_horizontally(struct rendering *r, char *text, struct completions *cs)
579 {
580 	size_t	i;
581 	int	prompt_width, ps1xlen, start_at;
582 	int	width, height;
583 	int	texty, textlen;
584 	char	*ps1dup;
585 
586 	prompt_width = 20; 	/* TODO: calculate the correct amount of char to show */
587 
588 	ps1dup = strdupn(r->ps1);
589 	ps1xlen = text_extents(ps1dup != NULL ? ps1dup : r->ps1, r->ps1len, r, &width, &height);
590 	free(ps1dup);
591 
592 	start_at  = r->x_zero + text_extents("n", 1, r, NULL, NULL);
593 	start_at *= prompt_width;
594 	start_at += r->padding;
595 
596 	texty = (inner_height(r) + height + r->y_zero) / 2;
597 
598 	XFillRectangle(r->d, r->w, r->prompt_bg, r->x_zero, r->y_zero, start_at, inner_height(r));
599 
600 	textlen = strlen(text);
601 	if (textlen > prompt_width)
602 		text = text + textlen - prompt_width;
603 
604 	draw_string(r->ps1, r->ps1len, r->x_zero + r->padding, texty, r, PROMPT);
605 	draw_string(text, MIN(textlen, prompt_width), r->x_zero + r->padding + ps1xlen, texty, r, PROMPT);
606 
607 	XFillRectangle(r->d, r->w, r->completion_bg, start_at, r->y_zero, r->width, inner_height(r));
608 
609 	for (i = r->offset; i < cs->length; ++i) {
610 		struct completion	*c;
611 		enum text_type		tt;
612 		GC			h;
613 		int			len, text_width;
614 
615 		c = &cs->completions[i];
616 		tt = cs->selected == (ssize_t)i ? COMPL_HIGH : COMPL;
617 		h  = cs->selected == (ssize_t)i ? r->completion_highlighted_bg : r->completion_bg;
618 		len = strlen(c->completion);
619 		text_width = text_extents(c->completion, len, r, NULL, NULL);
620 
621 		XFillRectangle(r->d, r->w, h, start_at, r->y_zero, text_width + r->padding*2, inner_height(r));
622 		draw_string(c->completion, len, start_at + r->padding, texty, r, tt);
623 
624 		start_at += text_width + r->padding * 2;
625 
626 		if (start_at > inner_width(r))
627 			break; 	/* don't draw completion out of the window */
628 	}
629 }
630 
631 /* |-----------------------------------------------------------------| */
632 /* |  prompt                                                         | */
633 /* |-----------------------------------------------------------------| */
634 /* |  completion                                                     | */
635 /* |-----------------------------------------------------------------| */
636 /* |  completion                                                     | */
637 /* |-----------------------------------------------------------------| */
638 void
639 draw_vertically(struct rendering *r, char *text, struct completions *cs)
640 {
641 	size_t	i;
642 	int	height, start_at;
643 	int	ps1xlen;
644 	char	*ps1dup;
645 
646 	text_extents("fjpgl", 5, r, NULL, &height);
647 	start_at = r->padding * 2 + height;
648 
649 	XFillRectangle(r->d, r->w, r->completion_bg, r->x_zero, r->y_zero, r->width, r->height);
650 	XFillRectangle(r->d, r->w, r->prompt_bg, r->x_zero, r->y_zero, r->width, start_at);
651 
652 	ps1dup = strdupn(r->ps1);
653 	ps1xlen = text_extents(ps1dup == NULL ? ps1dup : r->ps1, r->ps1len, r, NULL, NULL);
654 	free(ps1dup);
655 
656 	draw_string(r->ps1, r->ps1len, r->x_zero + r->padding, r->y_zero + height + r->padding, r, PROMPT);
657 	draw_string(text, strlen(text), r->x_zero + r->padding + ps1xlen, r->y_zero + height + r->padding, r, PROMPT);
658 
659 	start_at += r->y_zero;
660 
661 	for (i = r->offset; i < cs->length; ++i) {
662 		struct completion	*c;
663 		enum text_type		tt;
664 		GC			h;
665 		int			len;
666 
667 		c   = &cs->completions[i];
668 		tt  = cs->selected == (ssize_t)i ? COMPL_HIGH : COMPL;
669 		h   = cs->selected == (ssize_t)i ? r->completion_highlighted_bg : r->completion_bg;
670 		len = strlen(c->completion);
671 
672 		XFillRectangle(r->d, r->w, h, r->x_zero, start_at, inner_width(r), height + r->padding*2);
673 		draw_string(c->completion, len, r->x_zero + r->padding, start_at + height + r->padding, r, tt);
674 
675 		start_at += height + r->padding * 2;
676 
677 		if (start_at > inner_height(r))
678 			break;	/* don't draw completion out of the window */
679 	}
680 }
681 
682 void
683 draw(struct rendering *r, char *text, struct completions *cs)
684 {
685 	if (r->horizontal_layout)
686 		draw_horizontally(r, text, cs);
687 	else
688 		draw_vertically(r, text, cs);
689 
690 	/* Draw the borders */
691 	if (r->border_w != 0)
692 		XFillRectangle(r->d, r->w, r->border_w_bg, 0, 0, r->border_w, r->height);
693 
694 	if (r->border_e != 0)
695 		XFillRectangle(r->d, r->w, r->border_e_bg, r->width - r->border_e, 0, r->border_e, r->height);
696 
697 	if (r->border_n != 0)
698 		XFillRectangle(r->d, r->w, r->border_n_bg, 0, 0, r->width, r->border_n);
699 
700 	if (r->border_s != 0)
701 		XFillRectangle(r->d, r->w, r->border_s_bg, 0, r->height - r->border_s, r->width, r->border_s);
702 
703 	/* render! */
704 	XFlush(r->d);
705 }
706 
707 /* Set some WM stuff */
708 void
709 set_win_atoms_hints(Display *d, Window w, int width, int height)
710 {
711 	Atom		type;
712 	XClassHint	*class_hint;
713 	XSizeHints	*size_hint;
714 
715 	type = XInternAtom(d, "_NET_WM_WINDOW_TYPE_DOCK", false);
716 	XChangeProperty(
717 			d,
718 			w,
719 			XInternAtom(d, "_NET_WM_WINDOW_TYPE", false),
720 			XInternAtom(d, "ATOM", false),
721 			32,
722 			PropModeReplace,
723 			(unsigned char *)&type,
724 			1
725 			);
726 
727 	/* some window managers honor this properties */
728 	type = XInternAtom(d, "_NET_WM_STATE_ABOVE", false);
729 	XChangeProperty(d,
730 			w,
731 			XInternAtom(d, "_NET_WM_STATE", false),
732 			XInternAtom(d, "ATOM", false),
733 			32,
734 			PropModeReplace,
735 			(unsigned char *)&type,
736 			1
737 			);
738 
739 	type = XInternAtom(d, "_NET_WM_STATE_FOCUSED", false);
740 	XChangeProperty(d,
741 			w,
742 			XInternAtom(d, "_NET_WM_STATE", false),
743 			XInternAtom(d, "ATOM", false),
744 			32,
745 			PropModeAppend,
746 			(unsigned char *)&type,
747 			1
748 			);
749 
750 	/* Setting window hints */
751 	class_hint = XAllocClassHint();
752 	if (class_hint == NULL) {
753 		fprintf(stderr, "Could not allocate memory for class hint\n");
754 		exit(EX_UNAVAILABLE);
755 	}
756 	class_hint->res_name = resname;
757 	class_hint->res_class = resclass;
758 	XSetClassHint(d, w, class_hint);
759 	XFree(class_hint);
760 
761 	size_hint = XAllocSizeHints();
762 	if (size_hint == NULL) {
763 		fprintf(stderr, "Could not allocate memory for size hint\n");
764 		exit(EX_UNAVAILABLE);
765 	}
766 	size_hint->flags = PMinSize | PBaseSize;
767 	size_hint->min_width = width;
768 	size_hint->base_width = width;
769 	size_hint->min_height = height;
770 	size_hint->base_height = height;
771 
772 	XFlush(d);
773 }
774 
775 /* Get the width and height of the window `w' */
776 void
777 get_wh(Display *d, Window *w, int *width, int *height)
778 {
779 	XWindowAttributes win_attr;
780 
781 	XGetWindowAttributes(d, *w, &win_attr);
782 	*height = win_attr.height;
783 	*width = win_attr.width;
784 }
785 
786 int
787 grabfocus(Display *d, Window w)
788 {
789 	int	i;
790 	for (i = 0; i < 100; ++i) {
791 		Window focuswin;
792 		int revert_to_win;
793 
794 		XGetInputFocus(d, &focuswin, &revert_to_win);
795 
796 		if (focuswin == w)
797 			return true;
798 
799 		XSetInputFocus(d, w, RevertToParent, CurrentTime);
800 		usleep(1000);
801 	}
802 	return 0;
803 }
804 
805 /* 
806  * I know this may seem a little hackish BUT is the only way I managed
807  * to actually grab that goddam keyboard. Only one call to
808  * XGrabKeyboard does not always end up with the keyboard grabbed!
809  */
810 int
811 take_keyboard(Display *d, Window w)
812 {
813 	int i;
814 
815 	for (i = 0; i < 100; i++) {
816 		if (XGrabKeyboard(d, w, True, GrabModeAsync, GrabModeAsync, CurrentTime) == GrabSuccess)
817 			return 1;
818 		usleep(1000);
819 	}
820 	fprintf(stderr, "Cannot grab keyboard\n");
821 	return 0;
822 }
823 
824 unsigned long
825 parse_color(const char *str, const char *def)
826 {
827 	size_t len;
828 	rgba_t tmp;
829 	char *ep;
830 
831 	if (str == NULL)
832 		goto invc;
833 
834 	len = strlen(str);
835 
836 	/* +1 for the # ath the start */
837 	if (*str != '#' || len > 9 || len < 4)
838 		goto invc;
839 	++str; 			/* skip the # */
840 
841 	errno = 0;
842 	tmp = (rgba_t)(uint32_t)strtoul(str, &ep, 16);
843 
844 	if (errno)
845 		goto invc;
846 
847 	switch (len-1) {
848 	case 3:
849 		/* expand #rgb -> #rrggbb */
850 		tmp.v = (tmp.v & 0xf00) * 0x1100
851 			| (tmp.v & 0x0f0) * 0x0110
852 			| (tmp.v & 0x00f) * 0x0011;
853 	case 6:
854 		/* assume 0xff opacity */
855 		tmp.a = 0xff;
856 		break;
857 	} /* colors in #aarrggbb need no adjustments */
858 
859 	/* premultiply the alpha */
860 	if (tmp.a) {
861 		tmp.r = (tmp.r * tmp.a) / 255;
862 		tmp.g = (tmp.g * tmp.a) / 255;
863 		tmp.b = (tmp.b * tmp.a) / 255;
864 		return tmp.v;
865 	}
866 
867 	return 0U;
868 
869  invc:
870 	fprintf(stderr, "Invalid color: \"%s\".\n", str);
871 	if (def != NULL)
872 		return parse_color(def, NULL);
873 	else
874 		return 0U;
875 }
876 
877 // Given a string, try to parse it as a number or return
878 // `default_value'.
879 int
880 parse_integer(const char *str, int default_value)
881 {
882 	long	lval;
883 	char	*ep;
884 
885 	errno = 0;
886 	lval = strtol(str, &ep, 10);
887 
888 	if (str[0] == '\0' || *ep != '\0') { // NaN
889 		fprintf(stderr, "'%s' is not a valid number! Using %d as default.\n", str, default_value);
890 		return default_value;
891 	}
892 
893 	if ((errno == ERANGE && (lval == LONG_MAX || lval == LONG_MIN)) ||
894 	    (lval > INT_MAX || lval < INT_MIN)) {
895 		fprintf(stderr, "%s out of range! Using %d as default.\n", str, default_value);
896 		return default_value;
897 	}
898 
899 	return lval;
900 }
901 
902 /* Like parse_integer but recognize the percentages (i.e. strings ending with `%') */
903 int
904 parse_int_with_percentage(const char *str, int default_value, int max)
905 {
906 	int len = strlen(str);
907 
908 	if (len > 0 && str[len-1] == '%') {
909 		int val;
910 		char *cpy;
911 
912 		cpy = strdup(str);
913 		check_allocation(cpy);
914 		cpy[len-1] = '\0';
915 		val = parse_integer(cpy, default_value);
916 		free(cpy);
917 		return val * max / 100;
918 	}
919 	return parse_integer(str, default_value);
920 }
921 
922 /* 
923  * Like parse_int_with_percentage but understands some special values:
924  * - middle that is (max-self)/2
925  * - start  that is 0
926  * - end    that is (max-self)
927  */
928 int
929 parse_int_with_pos(const char *str, int default_value, int max, int self)
930 {
931 	if (!strcmp(str, "start"))
932 		return 0;
933 	if (!strcmp(str, "middle"))
934 		return (max - self)/2;
935 	if (!strcmp(str, "end"))
936 		return max-self;
937 	return parse_int_with_percentage(str, default_value, max);
938 }
939 
940 /* Parse a string like a CSS value. */
941 /* TODO: harden a bit this function */
942 char **
943 parse_csslike(const char *str)
944 {
945 	int	i;
946 	char	*s, *token, **ret;
947 	bool	any_null;
948 
949 	s = strdup(str);
950 	if (s == NULL)
951 		return NULL;
952 
953 	ret = malloc(4 * sizeof(char*));
954 	if (ret == NULL) {
955 		free(s);
956 		return NULL;
957 	}
958 
959 	i = 0;
960 	while ((token = strsep(&s, " ")) != NULL && i < 4) {
961 		ret[i] = strdup(token);
962 		i++;
963 	}
964 
965 	if (i == 1)
966 		for (int j = 1; j < 4; j++)
967 			ret[j] = strdup(ret[0]);
968 
969 	if (i == 2) {
970 		ret[2] = strdup(ret[0]);
971 		ret[3] = strdup(ret[1]);
972 	}
973 
974 	if (i == 3)
975 		ret[3] = strdup(ret[1]);
976 
977 	/* before we didn't check for the return type of strdup, here we will */
978 
979 	any_null = false;
980 	for (i = 0; i < 4; ++i)
981 		any_null = ret[i] == NULL || any_null;
982 
983 	if (any_null)
984 		for (i = 0; i < 4; ++i)
985 			if (ret[i] != NULL)
986 				free(ret[i]);
987 
988 	if (i == 0 || any_null) {
989 		free(s);
990 		free(ret);
991 		return NULL;
992 	}
993 
994 	return ret;
995 }
996 
997 /* 
998  * Given an event, try to understand what the users wants. If the
999  * return value is ADD_CHAR then `input' is a pointer to a string that
1000  * will need to be free'ed later.
1001  */
1002 enum
1003 action parse_event(Display *d, XKeyPressedEvent *ev, XIC xic, char **input)
1004 {
1005 	char	str[SYM_BUF_SIZE] = {0};
1006 	Status	s;
1007 
1008 	if (ev->keycode == XKeysymToKeycode(d, XK_BackSpace))
1009 		return DEL_CHAR;
1010 
1011 	if (ev->keycode == XKeysymToKeycode(d, XK_Tab))
1012 		return ev->state & ShiftMask ? PREV_COMPL : NEXT_COMPL;
1013 
1014 	if (ev->keycode == XKeysymToKeycode(d, XK_Return))
1015 		return CONFIRM;
1016 
1017 	if (ev->keycode == XKeysymToKeycode(d, XK_Escape))
1018 		return EXIT;
1019 
1020 	/* Try to read what key was pressed */
1021 	s = 0;
1022 	Xutf8LookupString(xic, ev, str, SYM_BUF_SIZE, 0, &s);
1023 	if (s == XBufferOverflow) {
1024 		fprintf(stderr, "Buffer overflow when trying to create keyboard symbol map.\n");
1025 		return EXIT;
1026 	}
1027 
1028 	if (ev->state & ControlMask) {
1029 		if (!strcmp(str, "")) /* C-u */
1030 			return DEL_LINE;
1031 		if (!strcmp(str, "")) /* C-w */
1032 			return DEL_WORD;
1033 		if (!strcmp(str, "")) /* C-h */
1034 			return DEL_CHAR;
1035 		if (!strcmp(str, "\r")) /* C-m */
1036 			return CONFIRM_CONTINUE;
1037 		if (!strcmp(str, "")) /* C-p */
1038 			return PREV_COMPL;
1039 		if (!strcmp(str, "")) /* C-n */
1040 			return NEXT_COMPL;
1041 		if (!strcmp(str, "")) /* C-c */
1042 			return EXIT;
1043 		if (!strcmp(str, "\t")) /* C-i */
1044 			return TOGGLE_FIRST_SELECTED;
1045 	}
1046 
1047 	*input = strdup(str);
1048 	if (*input == NULL) {
1049 		fprintf(stderr, "Error while allocating memory for key.\n");
1050 		return EXIT;
1051 	}
1052 
1053 	return ADD_CHAR;
1054 }
1055 
1056 void
1057 confirm(enum state *status, struct rendering *r, struct completions *cs, char **text, int *textlen)
1058 {
1059 	if ((cs->selected != -1) || (cs->length > 0 && r->first_selected)) {
1060 		/* if there is something selected expand it and return */
1061 		int index = cs->selected == -1 ? 0 : cs->selected;
1062 		struct completion *c = cs->completions;
1063 		char *t;
1064 
1065 		while (true) {
1066 			if (index == 0)
1067 				break;
1068 			c++;
1069 			index--;
1070 		}
1071 
1072 		t = c->rcompletion;
1073 		free(*text);
1074 		*text = strdup(t);
1075 
1076 		if (*text == NULL) {
1077 			fprintf(stderr, "Memory allocation error\n");
1078 			*status = ERR;
1079 		}
1080 
1081 		*textlen = strlen(*text);
1082 		return;
1083 	}
1084 
1085 	if (!r->free_text) /* cannot accept arbitrary text */
1086 		*status = LOOPING;
1087 }
1088 
1089 /* event loop */
1090 enum state
1091 loop(struct rendering *r, char **text, int *textlen, struct completions *cs, char **lines, char **vlines)
1092 {
1093 	enum state status = LOOPING;
1094 
1095 	while (status == LOOPING) {
1096 		XEvent e;
1097 		XNextEvent(r->d, &e);
1098 
1099 		if (XFilterEvent(&e, r->w))
1100 			continue;
1101 
1102 		switch (e.type) {
1103 		case KeymapNotify:
1104 			XRefreshKeyboardMapping(&e.xmapping);
1105 			break;
1106 
1107 		case FocusIn:
1108 			/* Re-grab focus */
1109 			if (e.xfocus.window != r->w)
1110 				grabfocus(r->d, r->w);
1111 			break;
1112 
1113 		case VisibilityNotify:
1114 			if (e.xvisibility.state != VisibilityUnobscured)
1115 				XRaiseWindow(r->d, r->w);
1116 			break;
1117 
1118 		case MapNotify:
1119 			get_wh(r->d, &r->w, &r->width, &r->height);
1120 			draw(r, *text, cs);
1121 			break;
1122 
1123 		case KeyPress: {
1124 			XKeyPressedEvent *ev = (XKeyPressedEvent*)&e;
1125 			char *input;
1126 
1127 			switch (parse_event(r->d, ev, r->xic, &input)) {
1128 			case EXIT:
1129 				status = ERR;
1130 				break;
1131 
1132 			case CONFIRM: {
1133 				status = OK;
1134 				confirm(&status, r, cs, text, textlen);
1135 				break;
1136 			}
1137 
1138 			case CONFIRM_CONTINUE: {
1139 				status = OK_LOOP;
1140 				confirm(&status, r, cs, text, textlen);
1141 				break;
1142 			}
1143 
1144 			case PREV_COMPL: {
1145 				complete(cs, r->first_selected, true, text, textlen, &status);
1146 				r->offset = cs->selected;
1147 				break;
1148 			}
1149 
1150 			case NEXT_COMPL: {
1151 				complete(cs, r->first_selected, false, text, textlen, &status);
1152 				r->offset = cs->selected;
1153 				break;
1154 			}
1155 
1156 			case DEL_CHAR:
1157 				popc(*text);
1158 				update_completions(cs, *text, lines, vlines, r->first_selected);
1159 				r->offset = 0;
1160 				break;
1161 
1162 			case DEL_WORD: {
1163 				popw(*text);
1164 				update_completions(cs, *text, lines, vlines, r->first_selected);
1165 				break;
1166 			}
1167 
1168 			case DEL_LINE: {
1169 				int i;
1170 				for (i = 0; i < *textlen; ++i)
1171 					*(*text + i) = 0;
1172 				update_completions(cs, *text, lines, vlines, r->first_selected);
1173 				r->offset = 0;
1174 				break;
1175 			}
1176 
1177 			case ADD_CHAR: {
1178 				int str_len, i;
1179 
1180 				str_len = strlen(input);
1181 
1182 				/*
1183 				 * sometimes a strange key is pressed
1184 				 * i.e. ctrl alone), so input will be
1185 				 * empty. Don't need to update
1186 				 * completion in that case
1187 				 */
1188 				if (str_len == 0)
1189 					break;
1190 
1191 				for (i = 0; i < str_len; ++i) {
1192 					*textlen = pushc(text, *textlen, input[i]);
1193 					if (*textlen == -1) {
1194 						fprintf(stderr, "Memory allocation error\n");
1195 						status = ERR;
1196 						break;
1197 					}
1198 				}
1199 
1200 				if (status != ERR) {
1201 					update_completions(cs, *text, lines, vlines, r->first_selected);
1202 					free(input);
1203 				}
1204 
1205 				r->offset = 0;
1206 				break;
1207 			}
1208 
1209 			case TOGGLE_FIRST_SELECTED:
1210 				r->first_selected = !r->first_selected;
1211 				if (r->first_selected && cs->selected < 0)
1212 					cs->selected = 0;
1213 				if (!r->first_selected && cs->selected == 0)
1214 					cs->selected = -1;
1215 				break;
1216 			}
1217 		}
1218 
1219 		case ButtonPress: {
1220 			XButtonPressedEvent *ev = (XButtonPressedEvent*)&e;
1221 			/* if (ev->button == Button1) { /\* click *\/ */
1222 			/*   int x = ev->x - r.border_w; */
1223 			/*   int y = ev->y - r.border_n; */
1224 			/*   fprintf(stderr, "Click @ (%d, %d)\n", x, y); */
1225 			/* } */
1226 
1227 			if (ev->button == Button4) /* scroll up */
1228 				r->offset = MAX((ssize_t)r->offset - 1, 0);
1229 
1230 			if (ev->button == Button5) /* scroll down */
1231 				r->offset = MIN(r->offset + 1, cs->length - 1);
1232 
1233 			break;
1234 		}
1235 		}
1236 
1237 		draw(r, *text, cs);
1238 	}
1239 
1240 	return status;
1241 }
1242 
1243 int
1244 load_font(struct rendering *r, const char *fontname)
1245 {
1246 #ifdef USE_XFT
1247 	r->font = XftFontOpenName(r->d, DefaultScreen(r->d), fontname);
1248 	return 0;
1249 #else
1250 	char **missing_charset_list;
1251 	int missing_charset_count;
1252 
1253 	r->font = XCreateFontSet(r->d, fontname, &missing_charset_list, &missing_charset_count, NULL);
1254 	if (r->font != NULL)
1255 		return 0;
1256 
1257 	fprintf(stderr, "Unable to load the font(s) %s\n", fontname);
1258 
1259 	if (!strcmp(fontname, default_fontname))
1260 		return -1;
1261 
1262 	return load_font(r, default_fontname);
1263 #endif
1264 }
1265 
1266 void
1267 usage(char *prgname)
1268 {
1269 	fprintf(stderr, "%s [-Aamvh] [-B colors] [-b borders] [-C color] [-c color]\n"
1270 		        "       [-d separator] [-e window] [-f font] [-H height] [-l layout]\n"
1271 		        "       [-P padding] [-p prompt] [-T color] [-t color] [-S color]\n"
1272 		        "       [-s color] [-W width] [-x coord] [-y coord]\n", prgname);
1273 }
1274 
1275 int
1276 main(int argc, char **argv)
1277 {
1278 	struct completions *cs;
1279 	XSetWindowAttributes attr;
1280 
1281 	size_t		nlines, i;
1282 	Display		*d;
1283 	Window		parent_window, w;
1284 	XVisualInfo	vinfo;
1285 	Colormap	cmap;
1286 	XGCValues	values;
1287 	XrmDatabase	xdb;
1288 	XIM		xim;
1289 	XIMStyle	best_match_style;
1290 	XIMStyles	*xis;
1291 	unsigned long	p_fg, compl_fg, compl_highlighted_fg;
1292 	unsigned long	p_bg, compl_bg, compl_highlighted_bg;
1293 	unsigned long	border_n_bg, border_e_bg, border_s_bg, border_w_bg;
1294 	int		ch;
1295 	int		offset_x, offset_y, width, height, x, y;
1296 	int		padding, textlen;
1297 	int		border_n, border_e, border_s, border_w;
1298 	int		d_width, d_height;
1299 	enum state	status;
1300 	bool		first_selected, free_text, multiple_select;
1301 	bool		embed, horizontal_layout;
1302 	char		*sep, *parent_window_id;
1303 	char		**lines, *buf, **vlines;
1304 	char		*ps1, *fontname, *text, *xrm;
1305 
1306 #ifdef __OpenBSD__
1307 	/* stdio & rpath: to read/write stdio/stdout/stderr */
1308 	/* unix:          to connect to XOrg */
1309 	pledge("stdio rpath unix", "");
1310 #endif
1311 
1312 	sep = NULL;
1313 	first_selected = false;
1314 	parent_window_id = NULL;
1315 	free_text = true;
1316 	multiple_select = false;
1317 
1318 	while ((ch = getopt(argc, argv, ARGS)) != -1) {
1319 		switch (ch) {
1320 		case 'h':	/* help */
1321 			usage(*argv);
1322 			return 0;
1323 		case 'v':	/* version */
1324 			fprintf(stderr, "%s version: %s\n", *argv, VERSION);
1325 			return 0;
1326 		case 'e':	/* embed */
1327 			parent_window_id = strdup(optarg);
1328 			check_allocation(parent_window_id);
1329 			break;
1330 		case 'd': {
1331 			sep = strdup(optarg);
1332 			check_allocation(sep);
1333 		}
1334 		case 'A': {
1335 			free_text = false;
1336 			break;
1337 		}
1338 		case 'm': {
1339 			multiple_select = true;
1340 			break;
1341 		}
1342 		default:
1343 			break;
1344 		}
1345 	}
1346 
1347 	/* Read the completions */
1348 	lines = NULL;
1349 	buf = NULL;
1350 	nlines = readlines(&lines, &buf);
1351 
1352 	vlines = NULL;
1353 	if (sep != NULL) {
1354 		int l;
1355 		l = strlen(sep);
1356 		vlines = calloc(nlines, sizeof(char*));
1357 		check_allocation(vlines);
1358 
1359 		for (i = 0; i < nlines; i++) {
1360 			char *t;
1361 			t = strstr(lines[i], sep);
1362 			if (t == NULL)
1363 				vlines[i] = lines[i];
1364 			else
1365 				vlines[i] = t + l;
1366 		}
1367 	}
1368 
1369 	setlocale(LC_ALL, getenv("LANG"));
1370 
1371 	status = LOOPING;
1372 
1373 	/* where the monitor start (used only with xinerama) */
1374 	offset_x = offset_y = 0;
1375 
1376 	/* default width and height */
1377 	width = 400;
1378 	height = 20;
1379 
1380 	/* default position on the screen */
1381 	x = y = 0;
1382 
1383 	/* default padding */
1384 	padding = 10;
1385 
1386 	/* default borders */
1387 	border_n = border_e = border_s = border_w = 0;
1388 
1389 	/* the prompt. We duplicate the string so later is easy to
1390 	 * free (in the case it's been overwritten by the user) */
1391 	ps1 = strdup("$ ");
1392 	check_allocation(ps1);
1393 
1394 	/* same for the font name */
1395 	fontname = strdup(default_fontname);
1396 	check_allocation(fontname);
1397 
1398 	textlen = 10;
1399 	text = malloc(textlen * sizeof(char));
1400 	check_allocation(text);
1401 
1402 	/* struct completions *cs = filter(text, lines); */
1403 	cs = compls_new(nlines);
1404 	check_allocation(cs);
1405 
1406 	/* start talking to xorg */
1407 	d = XOpenDisplay(NULL);
1408 	if (d == NULL) {
1409 		fprintf(stderr, "Could not open display!\n");
1410 		return EX_UNAVAILABLE;
1411 	}
1412 
1413 	embed = true;
1414 	if (! (parent_window_id && (parent_window = strtol(parent_window_id, NULL, 0)))) {
1415 		parent_window = DefaultRootWindow(d);
1416 		embed = false;
1417 	}
1418 
1419 	/* get display size */
1420 	get_wh(d, &parent_window, &d_width, &d_height);
1421 
1422 #ifdef USE_XINERAMA
1423 	if (!embed && XineramaIsActive(d)) { /* find the mice */
1424 		XineramaScreenInfo *info;
1425 		Window		r;
1426 		Window		root;
1427 		int		number_of_screens, monitors, i;
1428 		int		root_x, root_y, win_x, win_y;
1429 		unsigned int	mask;
1430 		bool		res;
1431 
1432 		number_of_screens = XScreenCount(d);
1433 		for (i = 0; i < number_of_screens; ++i) {
1434 			root = XRootWindow(d, i);
1435 			res = XQueryPointer(d, root, &r, &r, &root_x, &root_y, &win_x, &win_y, &mask);
1436 			if (res) break;
1437 		}
1438 		if (!res) {
1439 			fprintf(stderr, "No mouse found.\n");
1440 			root_x = 0;
1441 			root_y = 0;
1442 		}
1443 
1444 		// now find in which monitor the mice is on
1445 		info = XineramaQueryScreens(d, &monitors);
1446 		if (info) {
1447 			for (i = 0; i < monitors; ++i) {
1448 				if (info[i].x_org <= root_x && root_x <= (info[i].x_org + info[i].width)
1449 				    && info[i].y_org <= root_y && root_y <= (info[i].y_org + info[i].height)) {
1450 					offset_x = info[i].x_org;
1451 					offset_y = info[i].y_org;
1452 					d_width = info[i].width;
1453 					d_height = info[i].height;
1454 					break;
1455 				}
1456 			}
1457 		}
1458 		XFree(info);
1459 	}
1460 #endif
1461 	XMatchVisualInfo(d, DefaultScreen(d), 32, TrueColor, &vinfo);
1462 
1463 	cmap = XCreateColormap(d, XDefaultRootWindow(d), vinfo.visual, AllocNone);
1464 
1465 	p_fg = compl_fg = parse_color("#fff", NULL);
1466 	compl_highlighted_fg = parse_color("#000", NULL);
1467 
1468 	p_bg = compl_bg = parse_color("#000", NULL);
1469 	compl_highlighted_bg = parse_color("#fff", NULL);
1470 
1471 	border_n_bg = border_e_bg = border_s_bg = border_w_bg = parse_color("#000", NULL);
1472 
1473 	horizontal_layout = true;
1474 
1475 	/* Read the resources */
1476 	XrmInitialize();
1477 	xrm = XResourceManagerString(d);
1478 	xdb = NULL;
1479 	if (xrm != NULL) {
1480 		XrmValue value;
1481 		char *datatype[20];
1482 
1483 		xdb = XrmGetStringDatabase(xrm);
1484 
1485 		if (XrmGetResource(xdb, "MyMenu.font", "*", datatype, &value) == true) {
1486 			free(fontname);
1487 			fontname = strdup(value.addr);
1488 			check_allocation(fontname);
1489 		} else {
1490 			fprintf(stderr, "no font defined, using %s\n", fontname);
1491 		}
1492 
1493 		if (XrmGetResource(xdb, "MyMenu.layout", "*", datatype, &value) == true)
1494 			horizontal_layout = !strcmp(value.addr, "horizontal");
1495 		else
1496 			fprintf(stderr, "no layout defined, using horizontal\n");
1497 
1498 		if (XrmGetResource(xdb, "MyMenu.prompt", "*", datatype, &value) == true) {
1499 			free(ps1);
1500 			ps1 = normalize_str(value.addr);
1501 		} else {
1502 			fprintf(stderr, "no prompt defined, using \"%s\" as default\n", ps1);
1503 		}
1504 
1505 		if (XrmGetResource(xdb, "MyMenu.width", "*", datatype, &value) == true)
1506 			width = parse_int_with_percentage(value.addr, width, d_width);
1507 		else
1508 			fprintf(stderr, "no width defined, using %d\n", width);
1509 
1510 		if (XrmGetResource(xdb, "MyMenu.height", "*", datatype, &value) == true)
1511 			height = parse_int_with_percentage(value.addr, height, d_height);
1512 		else
1513 			fprintf(stderr, "no height defined, using %d\n", height);
1514 
1515 		if (XrmGetResource(xdb, "MyMenu.x", "*", datatype, &value) == true)
1516 			x = parse_int_with_pos(value.addr, x, d_width, width);
1517 		else
1518 			fprintf(stderr, "no x defined, using %d\n", x);
1519 
1520 		if (XrmGetResource(xdb, "MyMenu.y", "*", datatype, &value) == true)
1521 			y = parse_int_with_pos(value.addr, y, d_height, height);
1522 		else
1523 			fprintf(stderr, "no y defined, using %d\n", y);
1524 
1525 		if (XrmGetResource(xdb, "MyMenu.padding", "*", datatype, &value) == true)
1526 			padding = parse_integer(value.addr, padding);
1527 		else
1528 			fprintf(stderr, "no padding defined, using %d\n", padding);
1529 
1530 		if (XrmGetResource(xdb, "MyMenu.border.size", "*", datatype, &value) == true) {
1531 			char **borders;
1532 
1533 			borders = parse_csslike(value.addr);
1534 			if (borders != NULL) {
1535 				border_n = parse_integer(borders[0], 0);
1536 				border_e = parse_integer(borders[1], 0);
1537 				border_s = parse_integer(borders[2], 0);
1538 				border_w = parse_integer(borders[3], 0);
1539 			} else
1540 				fprintf(stderr, "error while parsing MyMenu.border.size\n");
1541 		} else
1542 			fprintf(stderr, "no border defined, using 0.\n");
1543 
1544 		/* Prompt */
1545 		if (XrmGetResource(xdb, "MyMenu.prompt.foreground", "*", datatype, &value) == true)
1546 			p_fg = parse_color(value.addr, "#fff");
1547 
1548 		if (XrmGetResource(xdb, "MyMenu.prompt.background", "*", datatype, &value) == true)
1549 			p_bg = parse_color(value.addr, "#000");
1550 
1551 		/* Completions */
1552 		if (XrmGetResource(xdb, "MyMenu.completion.foreground", "*", datatype, &value) == true)
1553 			compl_fg = parse_color(value.addr, "#fff");
1554 
1555 		if (XrmGetResource(xdb, "MyMenu.completion.background", "*", datatype, &value) == true)
1556 			compl_bg = parse_color(value.addr, "#000");
1557 		else
1558 			compl_bg = parse_color("#000", NULL);
1559 
1560 		/* Completion Highlighted */
1561 		if (XrmGetResource(xdb, "MyMenu.completion_highlighted.foreground", "*", datatype, &value) == true)
1562 			compl_highlighted_fg = parse_color(value.addr, "#000");
1563 
1564 		if (XrmGetResource(xdb, "MyMenu.completion_highlighted.background", "*", datatype, &value) == true)
1565 			compl_highlighted_bg = parse_color(value.addr, "#fff");
1566 		else
1567 			compl_highlighted_bg = parse_color("#fff", NULL);
1568 
1569 		// border
1570 		if (XrmGetResource(xdb, "MyMenu.border.color", "*", datatype, &value) == true) {
1571 			char **colors;
1572 			colors = parse_csslike(value.addr);
1573 			if (colors != NULL) {
1574 				border_n_bg = parse_color(colors[0], "#000");
1575 				border_e_bg = parse_color(colors[1], "#000");
1576 				border_s_bg = parse_color(colors[2], "#000");
1577 				border_w_bg = parse_color(colors[3], "#000");
1578 			} else
1579 				fprintf(stderr, "error while parsing MyMenu.border.color\n");
1580 		}
1581 	}
1582 
1583 	// second round of args parsing
1584 	optind = 0; // reset the option index
1585 	while ((ch = getopt(argc, argv, ARGS)) != -1) {
1586 		switch (ch) {
1587 		case 'a':
1588 			first_selected = true;
1589 			break;
1590 
1591 		case 'A':
1592 			/* free_text -- already catched */
1593 		case 'd':
1594 			/* separator -- this case was already catched */
1595 		case 'e':
1596 			/* embedding mymenu this case was already catched. */
1597 		case 'm':
1598 			/* multiple selection this case was already catched. */
1599 
1600 			break;
1601 		case 'p': {
1602 			char *newprompt;
1603 			newprompt = strdup(optarg);
1604 			if (newprompt != NULL) {
1605 				free(ps1);
1606 				ps1 = newprompt;
1607 			}
1608 			break;
1609 		}
1610 		case 'x':
1611 			x = parse_int_with_pos(optarg, x, d_width, width);
1612 			break;
1613 		case 'y':
1614 			y = parse_int_with_pos(optarg, y, d_height, height);
1615 			break;
1616 		case 'P':
1617 			padding = parse_integer(optarg, padding);
1618 			break;
1619 		case 'l':
1620 			horizontal_layout = !strcmp(optarg, "horizontal");
1621 			break;
1622 		case 'f': {
1623 			char *newfont;
1624 			if ((newfont = strdup(optarg)) != NULL) {
1625 				free(fontname);
1626 				fontname = newfont;
1627 			}
1628 			break;
1629 		}
1630 		case 'W':
1631 			width = parse_int_with_percentage(optarg, width, d_width);
1632 			break;
1633 		case 'H':
1634 			height = parse_int_with_percentage(optarg, height, d_height);
1635 			break;
1636 		case 'b': {
1637 			char **borders;
1638 			if ((borders = parse_csslike(optarg)) != NULL) {
1639 				border_n = parse_integer(borders[0], 0);
1640 				border_e = parse_integer(borders[1], 0);
1641 				border_s = parse_integer(borders[2], 0);
1642 				border_w = parse_integer(borders[3], 0);
1643 			} else
1644 				fprintf(stderr, "Error parsing b option\n");
1645 			break;
1646 		}
1647 		case 'B': {
1648 			char **colors;
1649 			if ((colors = parse_csslike(optarg)) != NULL) {
1650 				border_n_bg = parse_color(colors[0], "#000");
1651 				border_e_bg = parse_color(colors[1], "#000");
1652 				border_s_bg = parse_color(colors[2], "#000");
1653 				border_w_bg = parse_color(colors[3], "#000");
1654 			} else
1655 				fprintf(stderr, "error while parsing B option\n");
1656 			break;
1657 		}
1658 		case 't': {
1659 			p_fg = parse_color(optarg, NULL);
1660 			break;
1661 		}
1662 		case 'T': {
1663 			p_bg = parse_color(optarg, NULL);
1664 			break;
1665 		}
1666 		case 'c': {
1667 			compl_fg = parse_color(optarg, NULL);
1668 			break;
1669 		}
1670 		case 'C': {
1671 			compl_bg = parse_color(optarg, NULL);
1672 			break;
1673 		}
1674 		case 's': {
1675 			compl_highlighted_fg = parse_color(optarg, NULL);
1676 			break;
1677 		}
1678 		case 'S': {
1679 			compl_highlighted_bg = parse_color(optarg, NULL);
1680 			break;
1681 		}
1682 		default:
1683 			fprintf(stderr, "Unrecognized option %c\n", ch);
1684 			status = ERR;
1685 			break;
1686 		}
1687 	}
1688 
1689 	/* since only now we know if the first should be selected,
1690 	 * update the completion here */
1691 	update_completions(cs, text, lines, vlines, first_selected);
1692 
1693 	// create the window
1694 	attr.colormap = cmap;
1695 	attr.override_redirect = true;
1696 	attr.border_pixel = 0;
1697 	attr.background_pixel = 0x80808080;
1698 	attr.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
1699 
1700 	w = XCreateWindow(d,
1701 		parent_window,
1702 		x + offset_x, y + offset_y,
1703 		width, height,
1704 		0,
1705 		vinfo.depth,
1706 		InputOutput,
1707 		vinfo.visual,
1708 		CWBorderPixel | CWBackPixel | CWColormap | CWEventMask | CWOverrideRedirect,
1709 		&attr);
1710 
1711 	set_win_atoms_hints(d, w, width, height);
1712 
1713 	XSelectInput(d, w, StructureNotifyMask | KeyPressMask | KeymapStateMask | ButtonPressMask);
1714 	XMapRaised(d, w);
1715 
1716 	/* If embed, listen for other events as well */
1717 	if (embed) {
1718 		Window		*children, parent, root;
1719 		unsigned int	children_no;
1720 
1721 		XSelectInput(d, parent_window, FocusChangeMask);
1722 		if (XQueryTree(d, parent_window, &root, &parent, &children, &children_no) && children) {
1723 			for (i = 0; i < children_no && children[i] != w; ++i)
1724 				XSelectInput(d, children[i], FocusChangeMask);
1725 			XFree(children);
1726 		}
1727 		grabfocus(d, w);
1728 	}
1729 
1730 	take_keyboard(d, w);
1731 
1732 	struct rendering r = {
1733 		.d                          = d,
1734 		.w                          = w,
1735 		.width                      = width,
1736 		.height                     = height,
1737 		.padding                    = padding,
1738 		.x_zero                     = border_w,
1739 		.y_zero                     = border_n,
1740 		.offset                     = 0,
1741 		.free_text                  = free_text,
1742 		.first_selected             = first_selected,
1743 		.multiple_select            = multiple_select,
1744 		.border_n                   = border_n,
1745 		.border_e                   = border_e,
1746 		.border_s                   = border_s,
1747 		.border_w                   = border_w,
1748 		.horizontal_layout          = horizontal_layout,
1749 		.ps1                        = ps1,
1750 		.ps1len                     = strlen(ps1),
1751 		.prompt                     = XCreateGC(d, w, 0, &values),
1752 		.prompt_bg                  = XCreateGC(d, w, 0, &values),
1753 		.completion                 = XCreateGC(d, w, 0, &values),
1754 		.completion_bg              = XCreateGC(d, w, 0, &values),
1755 		.completion_highlighted     = XCreateGC(d, w, 0, &values),
1756 		.completion_highlighted_bg  = XCreateGC(d, w, 0, &values),
1757 		.border_n_bg                = XCreateGC(d, w, 0, &values),
1758 		.border_e_bg                = XCreateGC(d, w, 0, &values),
1759 		.border_s_bg                = XCreateGC(d, w, 0, &values),
1760 		.border_w_bg                = XCreateGC(d, w, 0, &values),
1761 	};
1762 
1763 	if (load_font(&r, fontname) == -1)
1764 		status = ERR;
1765 
1766 #ifdef USE_XFT
1767 	r.xftdraw = XftDrawCreate(d, w, vinfo.visual, DefaultColormap(d, 0));
1768 
1769 	{
1770 		rgba_t c;
1771 		XRenderColor xrcolor;
1772 
1773 		/* Prompt */
1774 		c = *(rgba_t*)&p_fg;
1775 		xrcolor.red          = EXPANDBITS(c.r);
1776 		xrcolor.green        = EXPANDBITS(c.g);
1777 		xrcolor.blue         = EXPANDBITS(c.b);
1778 		xrcolor.alpha        = EXPANDBITS(c.a);
1779 		XftColorAllocValue(d, DefaultVisual(d, 0), DefaultColormap(d, 0), &xrcolor, &r.xft_prompt);
1780 
1781 		/* Completion */
1782 		c = *(rgba_t*)&compl_fg;
1783 		xrcolor.red          = EXPANDBITS(c.r);
1784 		xrcolor.green        = EXPANDBITS(c.g);
1785 		xrcolor.blue         = EXPANDBITS(c.b);
1786 		xrcolor.alpha        = EXPANDBITS(c.a);
1787 		XftColorAllocValue(d, DefaultVisual(d, 0), DefaultColormap(d, 0), &xrcolor, &r.xft_completion);
1788 
1789 		/* Completion highlighted */
1790 		c = *(rgba_t*)&compl_highlighted_fg;
1791 		xrcolor.red          = EXPANDBITS(c.r);
1792 		xrcolor.green        = EXPANDBITS(c.g);
1793 		xrcolor.blue         = EXPANDBITS(c.b);
1794 		xrcolor.alpha        = EXPANDBITS(c.a);
1795 		XftColorAllocValue(d, DefaultVisual(d, 0), DefaultColormap(d, 0), &xrcolor, &r.xft_completion_highlighted);
1796 	}
1797 #endif
1798 
1799 	/* Load the colors in our GCs */
1800 	XSetForeground(d, r.prompt, p_fg);
1801 	XSetForeground(d, r.prompt_bg, p_bg);
1802 	XSetForeground(d, r.completion, compl_fg);
1803 	XSetForeground(d, r.completion_bg, compl_bg);
1804 	XSetForeground(d, r.completion_highlighted, compl_highlighted_fg);
1805 	XSetForeground(d, r.completion_highlighted_bg, compl_highlighted_bg);
1806 	XSetForeground(d, r.border_n_bg, border_n_bg);
1807 	XSetForeground(d, r.border_e_bg, border_e_bg);
1808 	XSetForeground(d, r.border_s_bg, border_s_bg);
1809 	XSetForeground(d, r.border_w_bg, border_w_bg);
1810 
1811 	/* Open the X input method */
1812 	xim = XOpenIM(d, xdb, resname, resclass);
1813 	check_allocation(xim);
1814 
1815 	if (XGetIMValues(xim, XNQueryInputStyle, &xis, NULL) || !xis) {
1816 		fprintf(stderr, "Input Styles could not be retrieved\n");
1817 		return EX_UNAVAILABLE;
1818 	}
1819 
1820 	best_match_style = 0;
1821 	for (int i = 0; i < xis->count_styles; ++i) {
1822 		XIMStyle ts = xis->supported_styles[i];
1823 		if (ts == (XIMPreeditNothing | XIMStatusNothing)) {
1824 			best_match_style = ts;
1825 			break;
1826 		}
1827 	}
1828 	XFree(xis);
1829 
1830 	if (!best_match_style)
1831 		fprintf(stderr, "No matching input style could be determined\n");
1832 
1833 	r.xic = XCreateIC(xim, XNInputStyle, best_match_style, XNClientWindow, w, XNFocusWindow, w, NULL);
1834 	check_allocation(r.xic);
1835 
1836 	/* Draw the window for the first time */
1837 	draw(&r, text, cs);
1838 
1839 	/* Main loop */
1840 	while (status == LOOPING || status == OK_LOOP) {
1841 		status = loop(&r, &text, &textlen, cs, lines, vlines);
1842 
1843 		if (status != ERR)
1844 			printf("%s\n", text);
1845 
1846 		if (!multiple_select && status == OK_LOOP)
1847 			status = OK;
1848 	}
1849 
1850 	XUngrabKeyboard(d, CurrentTime);
1851 
1852 #ifdef USE_XFT
1853 	XftColorFree(r.d, DefaultVisual(r.d, 0), DefaultColormap(r.d, 0), &r.xft_prompt);
1854 	XftColorFree(r.d, DefaultVisual(r.d, 0), DefaultColormap(r.d, 0), &r.xft_completion);
1855 	XftColorFree(r.d, DefaultVisual(r.d, 0), DefaultColormap(r.d, 0), &r.xft_completion_highlighted);
1856 #endif
1857 
1858 	free(ps1);
1859 	free(fontname);
1860 	free(text);
1861 
1862 	free(buf);
1863 	free(lines);
1864 	free(vlines);
1865 	compls_delete(cs);
1866 
1867 	XDestroyWindow(r.d, r.w);
1868 	XCloseDisplay(r.d);
1869 
1870 	return status != OK;
1871 }