xref: /freebsd/contrib/dialog/dialog.c (revision 3bdf775801b218aa5a89564839405b122f4b233e)
1 /*
2  * $Id: dialog.c,v 1.231 2013/09/02 17:20:09 tom Exp $
3  *
4  *  cdialog - Display simple dialog boxes from shell scripts
5  *
6  *  Copyright 2000-2012,2013	Thomas E. Dickey
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU Lesser General Public License, version 2.1
10  *  as published by the Free Software Foundation.
11  *
12  *  This program is distributed in the hope that it will be useful, but
13  *  WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  *  Lesser General Public License for more details.
16  *
17  *  You should have received a copy of the GNU Lesser General Public
18  *  License along with this program; if not, write to
19  *	Free Software Foundation, Inc.
20  *	51 Franklin St., Fifth Floor
21  *	Boston, MA 02110, USA.
22  *
23  *  An earlier version of this program lists as authors
24  *	Savio Lam (lam836@cs.cuhk.hk)
25  */
26 
27 #include <dialog.h>
28 #include <string.h>
29 #include <sys/types.h>
30 #include <sys/stat.h>
31 
32 #ifdef HAVE_SETLOCALE
33 #include <locale.h>
34 #endif
35 
36 #define PASSARGS             t,       av,        offset_add
37 #define CALLARGS const char *t, char *av[], int *offset_add
38 typedef int (callerFn) (CALLARGS);
39 
40 typedef enum {
41     o_unknown = 0
42     ,o_allow_close
43     ,o_and_widget
44     ,o_ascii_lines
45     ,o_aspect
46     ,o_auto_placement
47     ,o_backtitle
48     ,o_beep
49     ,o_beep_after
50     ,o_begin
51     ,o_cancel_label
52     ,o_checklist
53     ,o_clear
54     ,o_colors
55     ,o_column_separator
56     ,o_cr_wrap
57     ,o_create_rc
58     ,o_date_format
59     ,o_default_button
60     ,o_default_item
61     ,o_defaultno
62     ,o_exit_label
63     ,o_extra_button
64     ,o_extra_label
65     ,o_fixed_font
66     ,o_form
67     ,o_gauge
68     ,o_help
69     ,o_help_button
70     ,o_help_file
71     ,o_help_label
72     ,o_help_line
73     ,o_help_status
74     ,o_help_tags
75     ,o_icon
76     ,o_ignore
77     ,o_infobox
78     ,o_input_fd
79     ,o_inputbox
80     ,o_inputmenu
81     ,o_insecure
82     ,o_item_help
83     ,o_keep_colors
84     ,o_keep_tite
85     ,o_keep_window
86     ,o_last_key
87     ,o_max_input
88     ,o_menu
89     ,o_mixedform
90     ,o_mixedgauge
91     ,o_msgbox
92     ,o_no_close
93     ,o_no_collapse
94     ,o_no_cr_wrap
95     ,o_no_kill
96     ,o_no_label
97     ,o_no_lines
98     ,o_no_mouse
99     ,o_no_nl_expand
100     ,o_no_shadow
101     ,o_nocancel
102     ,o_nook
103     ,o_ok_label
104     ,o_output_fd
105     ,o_output_separator
106     ,o_passwordbox
107     ,o_passwordform
108     ,o_pause
109     ,o_prgbox
110     ,o_print_maxsize
111     ,o_print_size
112     ,o_print_version
113     ,o_programbox
114     ,o_progressbox
115     ,o_quoted
116     ,o_radiolist
117     ,o_screen_center
118     ,o_scrollbar
119     ,o_separate_output
120     ,o_separate_widget
121     ,o_separator
122     ,o_shadow
123     ,o_single_quoted
124     ,o_size_err
125     ,o_sleep
126     ,o_smooth
127     ,o_stderr
128     ,o_stdout
129     ,o_tab_correct
130     ,o_tab_len
131     ,o_tailbox
132     ,o_tailboxbg
133     ,o_textbox
134     ,o_time_format
135     ,o_timeout
136     ,o_title
137     ,o_trim
138     ,o_under_mouse
139     ,o_version
140     ,o_visit_items
141     ,o_wmclass
142     ,o_yes_label
143     ,o_yesno
144 #ifdef HAVE_WHIPTAIL
145     ,o_fullbutton
146     ,o_topleft
147 #endif
148 #ifdef HAVE_XDIALOG
149     ,o_calendar
150     ,o_dselect
151     ,o_editbox
152     ,o_fselect
153     ,o_timebox
154 #endif
155 #ifdef HAVE_XDIALOG2
156     ,o_buildlist
157     ,o_rangebox
158     ,o_treeview
159 #endif
160 #if defined(HAVE_XDIALOG2) || defined(HAVE_WHIPTAIL)
161     ,o_no_items
162     ,o_no_tags
163 #endif
164 #ifdef HAVE_DLG_TRACE
165     ,o_trace
166 #endif
167 } eOptions;
168 
169 /*
170  * The bits in 'pass' are used to decide which options are applicable at
171  * different stages in the program:
172  *	1 flags before widgets
173  *	2 widgets
174  *	4 non-widget options
175  */
176 typedef struct {
177     const char *name;
178     eOptions code;
179     int pass;			/* 1,2,4 or combination */
180     const char *help;		/* NULL to suppress, non-empty to display params */
181 } Options;
182 
183 typedef struct {
184     eOptions code;
185     int argmin, argmax;
186     callerFn *jumper;
187 } Mode;
188 
189 static bool *dialog_opts;
190 static char **dialog_argv;
191 
192 static bool ignore_unknown = FALSE;
193 
194 static const char *program = "dialog";
195 
196 /*
197  * The options[] table is organized this way to make it simple to maintain
198  * a sorted list of options for the help-message.
199  */
200 /* *INDENT-OFF* */
201 static const Options options[] = {
202     { "allow-close",	o_allow_close,		1, NULL },
203     { "and-widget",	o_and_widget,		4, NULL },
204     { "ascii-lines",	o_ascii_lines, 		1, "" },
205     { "aspect",		o_aspect,		1, "<ratio>" },
206     { "auto-placement", o_auto_placement,	1, NULL },
207     { "backtitle",	o_backtitle,		1, "<backtitle>" },
208     { "beep",		o_beep,			1, "" },
209     { "beep-after",	o_beep_after,		1, "" },
210     { "begin",		o_begin,		1, "<y> <x>" },
211     { "cancel-label",	o_cancel_label,		1, "<str>" },
212     { "checklist",	o_checklist,		2, "<text> <height> <width> <list height> <tag1> <item1> <status1>..." },
213     { "clear",		o_clear,		1, "" },
214     { "colors",		o_colors,		1, "" },
215     { "column-separator",o_column_separator,	1, "<str>" },
216     { "cr-wrap",	o_cr_wrap,		1, "" },
217     { "create-rc",	o_create_rc,		1, NULL },
218     { "date-format",	o_date_format,		1, "<str>" },
219     { "default-button",	o_default_button,	1, "<str>" },
220     { "default-item",	o_default_item,		1, "<str>" },
221     { "defaultno",	o_defaultno,		1, "" },
222     { "exit-label",	o_exit_label,		1, "<str>" },
223     { "extra-button",	o_extra_button,		1, "" },
224     { "extra-label",	o_extra_label,		1, "<str>" },
225     { "fixed-font",	o_fixed_font,		1, NULL },
226     { "form",		o_form,			2, "<text> <height> <width> <form height> <label1> <l_y1> <l_x1> <item1> <i_y1> <i_x1> <flen1> <ilen1>..." },
227     { "gauge",		o_gauge,		2, "<text> <height> <width> [<percent>]" },
228     { "guage",		o_gauge,		2, NULL },
229     { "help",		o_help,			4, "" },
230     { "help-button",	o_help_button,		1, "" },
231     { "help-label",	o_help_label,		1, "<str>" },
232     { "help-status",	o_help_status,		1, "" },
233     { "help-tags",	o_help_tags,		1, "" },
234     { "hfile",		o_help_file,		1, "<str>" },
235     { "hline",		o_help_line,		1, "<str>" },
236     { "icon",		o_icon,			1, NULL },
237     { "ignore",		o_ignore,		1, "" },
238     { "infobox",	o_infobox,		2, "<text> <height> <width>" },
239     { "input-fd",	o_input_fd,		1, "<fd>" },
240     { "inputbox",	o_inputbox,		2, "<text> <height> <width> [<init>]" },
241     { "inputmenu",	o_inputmenu,		2, "<text> <height> <width> <menu height> <tag1> <item1>..." },
242     { "insecure",	o_insecure,		1, "" },
243     { "item-help",	o_item_help,		1, "" },
244     { "keep-colors",	o_keep_colors,		1, NULL },
245     { "keep-tite",	o_keep_tite,		1, "" },
246     { "keep-window",	o_keep_window,		1, "" },
247     { "last-key",	o_last_key,		1, "" },
248     { "max-input",	o_max_input,		1, "<n>" },
249     { "menu",		o_menu,			2, "<text> <height> <width> <menu height> <tag1> <item1>..." },
250     { "mixedform",	o_mixedform,		2, "<text> <height> <width> <form height> <label1> <l_y1> <l_x1> <item1> <i_y1> <i_x1> <flen1> <ilen1> <itype>..." },
251     { "mixedgauge",	o_mixedgauge,		2, "<text> <height> <width> <percent> <tag1> <item1>..." },
252     { "msgbox",		o_msgbox,		2, "<text> <height> <width>" },
253     { "no-cancel",	o_nocancel,		1, "" },
254     { "no-close",	o_no_close,		1, NULL },
255     { "no-collapse",	o_no_collapse,		1, "" },
256     { "no-cr-wrap",	o_no_cr_wrap,		1, "" },
257     { "no-kill",	o_no_kill,		1, "" },
258     { "no-label",	o_no_label,		1, "<str>" },
259     { "no-lines",	o_no_lines, 		1, "" },
260     { "no-mouse",	o_no_mouse,		1, "" },
261     { "no-nl-expand",	o_no_nl_expand,		1, "" },
262     { "no-ok",		o_nook,			1, "" },
263     { "no-shadow",	o_no_shadow,		1, "" },
264     { "nocancel",	o_nocancel,		1, NULL }, /* see --no-cancel */
265     { "nook",		o_nook,			1, "" }, /* See no-ok */
266     { "ok-label",	o_ok_label,		1, "<str>" },
267     { "output-fd",	o_output_fd,		1, "<fd>" },
268     { "output-separator",o_output_separator,	1, "<str>" },
269     { "passwordbox",	o_passwordbox,		2, "<text> <height> <width> [<init>]" },
270     { "passwordform",	o_passwordform,		2, "<text> <height> <width> <form height> <label1> <l_y1> <l_x1> <item1> <i_y1> <i_x1> <flen1> <ilen1>..." },
271     { "pause",		o_pause,		2, "<text> <height> <width> <seconds>" },
272     { "prgbox",		o_prgbox,		2, "<text> <command> <height> <width>" },
273     { "print-maxsize",	o_print_maxsize,	1, "" },
274     { "print-size",	o_print_size,		1, "" },
275     { "print-version",	o_print_version,	5, "" },
276     { "programbox",	o_programbox,		2, "<text> <height> <width>" },
277     { "progressbox",	o_progressbox,		2, "<text> <height> <width>" },
278     { "quoted",		o_quoted,		1, "" },
279     { "radiolist",	o_radiolist,		2, "<text> <height> <width> <list height> <tag1> <item1> <status1>..." },
280     { "screen-center",	o_screen_center,	1, NULL },
281     { "scrollbar",	o_scrollbar,		1, "" },
282     { "separate-output",o_separate_output,	1, "" },
283     { "separate-widget",o_separate_widget,	1, "<str>" },
284     { "separator",	o_separator,		1, NULL },
285     { "shadow",		o_shadow,		1, "" },
286     { "single-quoted",	o_single_quoted,	1, "" },
287     { "size-err",	o_size_err,		1, "" },
288     { "sleep",		o_sleep,		1, "<secs>" },
289     { "smooth",		o_smooth,		1, NULL },
290     { "stderr",		o_stderr,		1, "" },
291     { "stdout",		o_stdout,		1, "" },
292     { "tab-correct",	o_tab_correct,		1, "" },
293     { "tab-len",	o_tab_len,		1, "<n>" },
294     { "tailbox",	o_tailbox,		2, "<file> <height> <width>" },
295     { "tailboxbg",	o_tailboxbg,		2, "<file> <height> <width>" },
296     { "textbox",	o_textbox,		2, "<file> <height> <width>" },
297     { "time-format",	o_time_format,		1, "<str>" },
298     { "timeout",	o_timeout,		1, "<secs>" },
299     { "title",		o_title,		1, "<title>" },
300     { "trim",		o_trim,			1, "" },
301     { "under-mouse", 	o_under_mouse,		1, NULL },
302     { "version",	o_version,		5, "" },
303     { "visit-items", 	o_visit_items,		1, "" },
304     { "wmclass",	o_wmclass,		1, NULL },
305     { "yes-label",	o_yes_label,		1, "<str>" },
306     { "yesno",		o_yesno,		2, "<text> <height> <width>" },
307 #ifdef HAVE_WHIPTAIL
308     { "cancel-button",	o_cancel_label,		1, NULL },
309     { "fb",		o_fullbutton,		1, NULL },
310     { "fullbutton",	o_fullbutton,		1, NULL },
311     { "no-button",	o_no_label,		1, NULL },
312     { "ok-button",	o_ok_label,		1, NULL },
313     { "scrolltext",	o_scrollbar,		1, NULL },
314     { "topleft",	o_topleft,		1, NULL },
315     { "yes-button",	o_yes_label,		1, NULL },
316 #endif
317 #ifdef HAVE_XDIALOG
318     { "calendar",	o_calendar,		2, "<text> <height> <width> <day> <month> <year>" },
319     { "dselect",	o_dselect,		2, "<directory> <height> <width>" },
320     { "editbox",	o_editbox,		2, "<file> <height> <width>" },
321     { "fselect",	o_fselect,		2, "<filepath> <height> <width>" },
322     { "timebox",	o_timebox,		2, "<text> <height> <width> <hour> <minute> <second>" },
323 #endif
324 #ifdef HAVE_XDIALOG2
325     { "buildlist",	o_buildlist,		2, "<text> <height> <width> <tag1> <item1> <status1>..." },
326     { "no-items", 	o_no_items,		1, "" },
327     { "no-tags", 	o_no_tags,		1, "" },
328     { "rangebox",	o_rangebox,		2, "<text> <height> <width> <min-value> <max-value> <default-value>" },
329     { "treeview",	o_treeview,		2, "<text> <height> <width> <list-height> <tag1> <item1> <status1> <depth1>..." },
330 #endif
331 #if defined(HAVE_XDIALOG2) || defined(HAVE_WHIPTAIL)
332     { "noitem", 	o_no_items,		1, NULL },
333     { "notags", 	o_no_tags,		1, NULL },
334 #endif
335 #ifdef HAVE_DLG_TRACE
336     { "trace",		o_trace,		1, "<file>" },
337 #endif
338 };
339 /* *INDENT-ON* */
340 
341 /*
342  * Make an array showing which argv[] entries are options.  Use "--" as a
343  * special token to escape the next argument, allowing it to begin with "--".
344  * When we find a "--" argument, also remove it from argv[] and adjust argc.
345  * That appears to be an undocumented feature of the popt library.
346  *
347  * Also, if we see a "--file", expand it into the parameter list by reading the
348  * text from the given file and stripping quotes, treating whitespace outside
349  * quotes as a parameter delimiter.
350  *
351  * Finally, if we see a "--args", dump the current list of arguments to the
352  * standard error.  This is used for debugging complex --file combinations.
353  */
354 static void
355 unescape_argv(int *argcp, char ***argvp)
356 {
357     int j, k;
358     int limit_includes = 20 + *argcp;
359     int count_includes = 0;
360     bool changed = FALSE;
361     bool doalloc = FALSE;
362     char *filename;
363 
364     dialog_opts = dlg_calloc(bool, (size_t) *argcp + 1);
365     assert_ptr(dialog_opts, "unescape_argv");
366 
367     for (j = 1; j < *argcp; j++) {
368 	bool escaped = FALSE;
369 	if (!strcmp((*argvp)[j], "--")) {
370 	    escaped = TRUE;
371 	    changed = dlg_eat_argv(argcp, argvp, j, 1);
372 	} else if (!strcmp((*argvp)[j], "--args")) {
373 	    fprintf(stderr, "Showing arguments at arg%d\n", j);
374 	    for (k = 0; k < *argcp; ++k) {
375 		fprintf(stderr, " arg%d:%s\n", k, (*argvp)[k]);
376 	    }
377 	    changed = dlg_eat_argv(argcp, argvp, j, 1);
378 	} else if (!strcmp((*argvp)[j], "--file")) {
379 	    if (++count_includes > limit_includes)
380 		dlg_exiterr("Too many --file options");
381 
382 	    if ((filename = (*argvp)[j + 1]) != 0) {
383 		FILE *fp;
384 		char **list;
385 		char *blob;
386 		int added;
387 		size_t bytes_read;
388 		size_t length;
389 		int n;
390 
391 		if (*filename == '&') {
392 		    fp = fdopen(atoi(filename + sizeof(char)), "r");
393 		} else {
394 		    fp = fopen(filename, "r");
395 		}
396 
397 		if (fp) {
398 		    blob = NULL;
399 		    length = 0;
400 		    do {
401 			blob = dlg_realloc(char, length + BUFSIZ + 1, blob);
402 			assert_ptr(blob, "unescape_argv");
403 			bytes_read = fread(blob + length,
404 					   sizeof(char),
405 					     (size_t) BUFSIZ,
406 					   fp);
407 			length += bytes_read;
408 			if (ferror(fp))
409 			    dlg_exiterr("error on filehandle in unescape_argv");
410 		    } while (bytes_read == BUFSIZ);
411 		    fclose(fp);
412 
413 		    blob[length] = '\0';
414 
415 		    list = dlg_string_to_argv(blob);
416 		    if ((added = dlg_count_argv(list)) != 0) {
417 			if (added > 2) {
418 			    size_t need = (size_t) (*argcp + added + 1);
419 			    if (doalloc) {
420 				*argvp = dlg_realloc(char *, need, *argvp);
421 				assert_ptr(*argvp, "unescape_argv");
422 			    } else {
423 				char **newp = dlg_malloc(char *, need);
424 				assert_ptr(newp, "unescape_argv");
425 				for (n = 0; n < *argcp; ++n) {
426 				    newp[n] = (*argvp)[n];
427 				}
428 				*argvp = newp;
429 				doalloc = TRUE;
430 			    }
431 			    dialog_opts = dlg_realloc(bool, need, dialog_opts);
432 			    assert_ptr(dialog_opts, "unescape_argv");
433 			}
434 			for (n = *argcp; n >= j + 2; --n) {
435 			    (*argvp)[n + added - 2] = (*argvp)[n];
436 			    dialog_opts[n + added - 2] = dialog_opts[n];
437 			}
438 			for (n = 0; n < added; ++n) {
439 			    (*argvp)[n + j] = list[n];
440 			    dialog_opts[n + j] = FALSE;
441 			}
442 			*argcp += added - 2;
443 			free(list);
444 		    }
445 		} else {
446 		    dlg_exiterr("Cannot open --file %s", filename);
447 		}
448 		(*argvp)[*argcp] = 0;
449 		++j;
450 		continue;
451 	    } else {
452 		dlg_exiterr("No value given for --file");
453 	    }
454 	}
455 	if (!escaped
456 	    && (*argvp)[j] != 0
457 	    && !strncmp((*argvp)[j], "--", (size_t) 2)
458 	    && isalpha(UCH((*argvp)[j][2]))) {
459 	    dialog_opts[j] = TRUE;
460 	}
461     }
462 
463     /* if we didn't find any "--" tokens, there's no reason to do the table
464      * lookup in isOption()
465      */
466     if (!changed) {
467 	free(dialog_opts);
468 	dialog_opts = 0;
469     }
470     dialog_argv = (*argvp);
471 }
472 
473 #define OptionChars "\
474 0123456789\
475 -\
476 abcdefghijklmnopqrstuvwxyz\
477 "
478 
479 /*
480  * Check if the given string from main's argv is an option.
481  */
482 static bool
483 isOption(const char *arg)
484 {
485     bool result = FALSE;
486 
487     if (arg != 0) {
488 	if (dialog_opts != 0) {
489 	    int n;
490 	    for (n = 1; dialog_argv[n] != 0; ++n) {
491 		if (dialog_argv[n] == arg) {
492 		    result = dialog_opts[n];
493 		    break;
494 		}
495 	    }
496 	} else if (!strncmp(arg, "--", (size_t) 2) && isalpha(UCH(arg[2]))) {
497 	    if (strlen(arg) == strspn(arg, OptionChars)) {
498 		result = TRUE;
499 	    } else {
500 		dlg_exiterr("Invalid option \"%s\"", arg);
501 	    }
502 	}
503     }
504     return result;
505 }
506 
507 static eOptions
508 lookupOption(const char *name, int pass)
509 {
510     unsigned n;
511     eOptions result = o_unknown;
512 
513     if (isOption(name)) {
514 	name += 2;
515 	for (n = 0; n < sizeof(options) / sizeof(options[0]); n++) {
516 	    if ((pass & options[n].pass) != 0
517 		&& !strcmp(name, options[n].name)) {
518 		result = options[n].code;
519 		break;
520 	    }
521 	}
522     }
523     return result;
524 }
525 
526 static void
527 Usage(const char *msg)
528 {
529     dlg_exiterr("Error: %s.\nUse --help to list options.\n\n", msg);
530 }
531 
532 /*
533  * Count arguments, stopping at the end of the argument list, or on any of our
534  * "--" tokens.
535  */
536 static int
537 arg_rest(char *argv[])
538 {
539     int i = 1;			/* argv[0] points to a "--" token */
540 
541     while (argv[i] != 0
542 	   && (!isOption(argv[i]) || lookupOption(argv[i], 7) == o_unknown))
543 	i++;
544     return i;
545 }
546 
547 /*
548  * In MultiWidget this function is needed to count how many tags
549  * a widget (menu, checklist, radiolist) has
550  */
551 static int
552 howmany_tags(char *argv[], int group)
553 {
554     int result = 0;
555     int have;
556     const char *format = "Expected %d arguments, found only %d";
557     char temp[80];
558 
559     while (argv[0] != 0) {
560 	if (isOption(argv[0]))
561 	    break;
562 	if ((have = arg_rest(argv)) < group) {
563 	    sprintf(temp, format, group, have);
564 	    Usage(temp);
565 	}
566 
567 	argv += group;
568 	result++;
569     }
570 
571     return result;
572 }
573 
574 static int
575 numeric_arg(char **av, int n)
576 {
577     int result = 0;
578 
579     if (n < dlg_count_argv(av)) {
580 	char msg[80];
581 	char *last = 0;
582 	result = (int) strtol(av[n], &last, 10);
583 
584 	if (last == 0 || *last != 0) {
585 	    sprintf(msg, "Expected a number for token %d of %.20s", n, av[0]);
586 	    Usage(msg);
587 	}
588     }
589     return result;
590 }
591 
592 static char *
593 optional_str(char **av, int n, char *dft)
594 {
595     char *ret = dft;
596     if (arg_rest(av) > n)
597 	ret = av[n];
598     return ret;
599 }
600 
601 #if defined(HAVE_DLG_GAUGE) || defined(HAVE_XDIALOG)
602 static int
603 optional_num(char **av, int n, int dft)
604 {
605     int ret = dft;
606     if (arg_rest(av) > n)
607 	ret = numeric_arg(av, n);
608     return ret;
609 }
610 #endif
611 
612 /*
613  * On AIX 4.x, we have to flush the output right away since there is a bug in
614  * the curses package which discards stdout even when we've used newterm to
615  * redirect output to /dev/tty.
616  */
617 static int
618 show_result(int ret)
619 {
620     bool either = FALSE;
621 
622     switch (ret) {
623     case DLG_EXIT_OK:
624     case DLG_EXIT_EXTRA:
625     case DLG_EXIT_HELP:
626     case DLG_EXIT_ITEM_HELP:
627 	if ((dialog_state.output_count > 1) && !dialog_vars.separate_output) {
628 	    fputs((dialog_state.separate_str
629 		   ? dialog_state.separate_str
630 		   : DEFAULT_SEPARATE_STR),
631 		  dialog_state.output);
632 	    either = TRUE;
633 	}
634 	if (dialog_vars.input_result != 0
635 	    && dialog_vars.input_result[0] != '\0') {
636 	    fputs(dialog_vars.input_result, dialog_state.output);
637 	    either = TRUE;
638 	}
639 	if (either) {
640 	    fflush(dialog_state.output);
641 	}
642 	break;
643     }
644     return ret;
645 }
646 
647 /*
648  * These are the widget callers.
649  */
650 
651 static int
652 call_yesno(CALLARGS)
653 {
654     *offset_add = 4;
655     return dialog_yesno(t,
656 			av[1],
657 			numeric_arg(av, 2),
658 			numeric_arg(av, 3));
659 }
660 
661 static int
662 call_msgbox(CALLARGS)
663 {
664     *offset_add = 4;
665     return dialog_msgbox(t,
666 			 av[1],
667 			 numeric_arg(av, 2),
668 			 numeric_arg(av, 3), 1);
669 }
670 
671 static int
672 call_infobox(CALLARGS)
673 {
674     *offset_add = 4;
675     return dialog_msgbox(t,
676 			 av[1],
677 			 numeric_arg(av, 2),
678 			 numeric_arg(av, 3), 0);
679 }
680 
681 static int
682 call_textbox(CALLARGS)
683 {
684     *offset_add = 4;
685     return dialog_textbox(t,
686 			  av[1],
687 			  numeric_arg(av, 2),
688 			  numeric_arg(av, 3));
689 }
690 
691 static int
692 call_menu(CALLARGS)
693 {
694     int tags = howmany_tags(av + 5, MENUBOX_TAGS);
695     *offset_add = 5 + tags * MENUBOX_TAGS;
696 
697     return dialog_menu(t,
698 		       av[1],
699 		       numeric_arg(av, 2),
700 		       numeric_arg(av, 3),
701 		       numeric_arg(av, 4),
702 		       tags, av + 5);
703 }
704 
705 static int
706 call_inputmenu(CALLARGS)
707 {
708     int tags = howmany_tags(av + 5, MENUBOX_TAGS);
709     bool free_extra_label = FALSE;
710     int result;
711 
712     dialog_vars.input_menu = TRUE;
713 
714     if (dialog_vars.max_input == 0)
715 	dialog_vars.max_input = MAX_LEN / 2;
716 
717     if (dialog_vars.extra_label == 0) {
718 	free_extra_label = TRUE;
719 	dialog_vars.extra_label = dlg_strclone(_("Rename"));
720     }
721 
722     dialog_vars.extra_button = TRUE;
723 
724     *offset_add = 5 + tags * MENUBOX_TAGS;
725     result = dialog_menu(t,
726 			 av[1],
727 			 numeric_arg(av, 2),
728 			 numeric_arg(av, 3),
729 			 numeric_arg(av, 4),
730 			 tags, av + 5);
731     if (free_extra_label) {
732 	free(dialog_vars.extra_label);
733 	dialog_vars.extra_label = 0;
734     }
735     return result;
736 }
737 
738 static int
739 call_checklist(CALLARGS)
740 {
741     int tags = howmany_tags(av + 5, CHECKBOX_TAGS);
742     int code;
743 
744     *offset_add = 5 + tags * CHECKBOX_TAGS;
745     code = dialog_checklist(t,
746 			    av[1],
747 			    numeric_arg(av, 2),
748 			    numeric_arg(av, 3),
749 			    numeric_arg(av, 4),
750 			    tags, av + 5, FLAG_CHECK);
751     return code;
752 }
753 
754 static int
755 call_radiolist(CALLARGS)
756 {
757     int tags = howmany_tags(av + 5, CHECKBOX_TAGS);
758     *offset_add = 5 + tags * CHECKBOX_TAGS;
759     return dialog_checklist(t,
760 			    av[1],
761 			    numeric_arg(av, 2),
762 			    numeric_arg(av, 3),
763 			    numeric_arg(av, 4),
764 			    tags, av + 5, FLAG_RADIO);
765 }
766 
767 static int
768 call_inputbox(CALLARGS)
769 {
770     *offset_add = arg_rest(av);
771     return dialog_inputbox(t,
772 			   av[1],
773 			   numeric_arg(av, 2),
774 			   numeric_arg(av, 3),
775 			   optional_str(av, 4, 0), 0);
776 }
777 
778 static int
779 call_passwordbox(CALLARGS)
780 {
781     *offset_add = arg_rest(av);
782     return dialog_inputbox(t,
783 			   av[1],
784 			   numeric_arg(av, 2),
785 			   numeric_arg(av, 3),
786 			   optional_str(av, 4, 0), 1);
787 }
788 
789 #ifdef HAVE_XDIALOG
790 static int
791 call_calendar(CALLARGS)
792 {
793     *offset_add = arg_rest(av);
794     return dialog_calendar(t,
795 			   av[1],
796 			   numeric_arg(av, 2),
797 			   numeric_arg(av, 3),
798 			   optional_num(av, 4, -1),
799 			   optional_num(av, 5, -1),
800 			   optional_num(av, 6, -1));
801 }
802 
803 static int
804 call_dselect(CALLARGS)
805 {
806     *offset_add = arg_rest(av);
807     return dialog_dselect(t,
808 			  av[1],
809 			  numeric_arg(av, 2),
810 			  numeric_arg(av, 3));
811 }
812 
813 static int
814 call_editbox(CALLARGS)
815 {
816     *offset_add = 4;
817     return dialog_editbox(t,
818 			  av[1],
819 			  numeric_arg(av, 2),
820 			  numeric_arg(av, 3));
821 }
822 
823 static int
824 call_fselect(CALLARGS)
825 {
826     *offset_add = arg_rest(av);
827     return dialog_fselect(t,
828 			  av[1],
829 			  numeric_arg(av, 2),
830 			  numeric_arg(av, 3));
831 }
832 
833 static int
834 call_timebox(CALLARGS)
835 {
836     *offset_add = arg_rest(av);
837     return dialog_timebox(t,
838 			  av[1],
839 			  numeric_arg(av, 2),
840 			  numeric_arg(av, 3),
841 			  optional_num(av, 4, -1),
842 			  optional_num(av, 5, -1),
843 			  optional_num(av, 6, -1));
844 }
845 #endif /* HAVE_XDIALOG */
846 
847 /* dialog 1.2 widgets */
848 #ifdef HAVE_XDIALOG2
849 
850 #define DisableNoTags() \
851 	bool save_no_tags = dialog_vars.no_tags; \
852 	bool save_no_items = dialog_vars.no_items; \
853 	dialog_vars.no_tags = TRUE; \
854 	dialog_vars.no_items = FALSE
855 
856 #define RestoreNoTags() \
857 	dialog_vars.no_tags = save_no_tags; \
858 	dialog_vars.no_items = save_no_items
859 
860 static int
861 call_buildlist(CALLARGS)
862 {
863     int tags = howmany_tags(av + 5, CHECKBOX_TAGS);
864     int result;
865 
866     DisableNoTags();
867 
868     *offset_add = 5 + tags * CHECKBOX_TAGS;
869     result = dialog_buildlist(t,
870 			      av[1],
871 			      numeric_arg(av, 2),
872 			      numeric_arg(av, 3),
873 			      numeric_arg(av, 4),
874 			      tags, av + 5,
875 			      TRUE);
876     RestoreNoTags();
877     return result;
878 }
879 
880 static int
881 call_rangebox(CALLARGS)
882 {
883     int min_value;
884 
885     *offset_add = arg_rest(av);
886     min_value = numeric_arg(av, 4);
887     return dialog_rangebox(t,
888 			   av[1],
889 			   numeric_arg(av, 2),
890 			   numeric_arg(av, 3),
891 			   min_value,
892 			   numeric_arg(av, 5),
893 			   (*offset_add > 6) ? numeric_arg(av, 6) : min_value);
894 }
895 
896 static int
897 call_treeview(CALLARGS)
898 {
899     int tags = howmany_tags(av + 5, TREEVIEW_TAGS);
900     int result;
901 
902     DisableNoTags();
903 
904     *offset_add = arg_rest(av);
905     result = dialog_treeview(t,
906 			     av[1],
907 			     numeric_arg(av, 2),
908 			     numeric_arg(av, 3),
909 			     numeric_arg(av, 4),
910 			     tags, av + 5, FLAG_RADIO);
911     RestoreNoTags();
912     return result;
913 }
914 #endif /* HAVE_XDIALOG */
915 
916 #ifdef HAVE_DLG_FORMBOX
917 static int
918 call_form(CALLARGS)
919 {
920     int group = FORMBOX_TAGS;
921     int tags = howmany_tags(av + 5, group);
922     *offset_add = 5 + tags * group;
923 
924     return dialog_form(t,
925 		       av[1],
926 		       numeric_arg(av, 2),
927 		       numeric_arg(av, 3),
928 		       numeric_arg(av, 4),
929 		       tags, av + 5);
930 }
931 
932 static int
933 call_password_form(CALLARGS)
934 {
935     unsigned save = dialog_vars.formitem_type;
936     int result;
937 
938     dialog_vars.formitem_type = 1;
939     result = call_form(PASSARGS);
940     dialog_vars.formitem_type = save;
941 
942     return result;
943 }
944 #endif /* HAVE_DLG_FORMBOX */
945 
946 #ifdef HAVE_DLG_MIXEDFORM
947 static int
948 call_mixed_form(CALLARGS)
949 {
950     int group = MIXEDFORM_TAGS;
951     int tags = howmany_tags(av + 5, group);
952     *offset_add = 5 + tags * group;
953 
954     return dialog_mixedform(t,
955 			    av[1],
956 			    numeric_arg(av, 2),
957 			    numeric_arg(av, 3),
958 			    numeric_arg(av, 4),
959 			    tags, av + 5);
960 }
961 #endif /* HAVE_DLG_MIXEDFORM */
962 
963 #ifdef HAVE_DLG_GAUGE
964 static int
965 call_gauge(CALLARGS)
966 {
967     *offset_add = arg_rest(av);
968     return dialog_gauge(t,
969 			av[1],
970 			numeric_arg(av, 2),
971 			numeric_arg(av, 3),
972 			optional_num(av, 4, 0));
973 }
974 
975 static int
976 call_pause(CALLARGS)
977 {
978     *offset_add = arg_rest(av);
979     return dialog_pause(t,
980 			av[1],
981 			numeric_arg(av, 2),
982 			numeric_arg(av, 3),
983 			numeric_arg(av, 4));
984 }
985 #endif
986 
987 #ifdef HAVE_MIXEDGAUGE
988 static int
989 call_mixed_gauge(CALLARGS)
990 {
991 #define MIXEDGAUGE_BASE 5
992     int tags = howmany_tags(av + MIXEDGAUGE_BASE, MIXEDGAUGE_TAGS);
993     *offset_add = MIXEDGAUGE_BASE + tags * MIXEDGAUGE_TAGS;
994     return dialog_mixedgauge(t,
995 			     av[1],
996 			     numeric_arg(av, 2),
997 			     numeric_arg(av, 3),
998 			     numeric_arg(av, 4),
999 			     tags, av + MIXEDGAUGE_BASE);
1000 }
1001 #endif
1002 
1003 #ifdef HAVE_DLG_GAUGE
1004 static int
1005 call_prgbox(CALLARGS)
1006 {
1007     *offset_add = arg_rest(av);
1008     /* the original version does not accept a prompt string, but for
1009      * consistency we allow it.
1010      */
1011     return ((*offset_add == 5)
1012 	    ? dialog_prgbox(t,
1013 			    av[1],
1014 			    av[2],
1015 			    numeric_arg(av, 3),
1016 			    numeric_arg(av, 4), TRUE)
1017 	    : dialog_prgbox(t,
1018 			    "",
1019 			    av[1],
1020 			    numeric_arg(av, 2),
1021 			    numeric_arg(av, 3), TRUE));
1022 }
1023 #endif
1024 
1025 #ifdef HAVE_DLG_GAUGE
1026 static int
1027 call_programbox(CALLARGS)
1028 {
1029     int result;
1030 
1031     *offset_add = arg_rest(av);
1032     /* this function is a compromise between --prgbox and --progressbox.
1033      */
1034     result = ((*offset_add == 4)
1035 	      ? dlg_progressbox(t,
1036 				av[1],
1037 				numeric_arg(av, 2),
1038 				numeric_arg(av, 3),
1039 				TRUE,
1040 				dialog_state.pipe_input)
1041 	      : dlg_progressbox(t,
1042 				"",
1043 				numeric_arg(av, 1),
1044 				numeric_arg(av, 2),
1045 				TRUE,
1046 				dialog_state.pipe_input));
1047     dialog_state.pipe_input = 0;
1048     return result;
1049 }
1050 #endif
1051 
1052 #ifdef HAVE_DLG_GAUGE
1053 static int
1054 call_progressbox(CALLARGS)
1055 {
1056     *offset_add = arg_rest(av);
1057     /* the original version does not accept a prompt string, but for
1058      * consistency we allow it.
1059      */
1060     return ((*offset_add == 4)
1061 	    ? dialog_progressbox(t,
1062 				 av[1],
1063 				 numeric_arg(av, 2),
1064 				 numeric_arg(av, 3))
1065 	    : dialog_progressbox(t,
1066 				 "",
1067 				 numeric_arg(av, 1),
1068 				 numeric_arg(av, 2)));
1069 }
1070 #endif
1071 
1072 #ifdef HAVE_DLG_TAILBOX
1073 static int
1074 call_tailbox(CALLARGS)
1075 {
1076     *offset_add = 4;
1077     return dialog_tailbox(t,
1078 			  av[1],
1079 			  numeric_arg(av, 2),
1080 			  numeric_arg(av, 3),
1081 			  FALSE);
1082 }
1083 
1084 static int
1085 call_tailboxbg(CALLARGS)
1086 {
1087     *offset_add = 4;
1088     return dialog_tailbox(t,
1089 			  av[1],
1090 			  numeric_arg(av, 2),
1091 			  numeric_arg(av, 3),
1092 			  TRUE);
1093 }
1094 #endif
1095 /* *INDENT-OFF* */
1096 static const Mode modes[] =
1097 {
1098     {o_yesno,           4, 4, call_yesno},
1099     {o_msgbox,          4, 4, call_msgbox},
1100     {o_infobox,         4, 4, call_infobox},
1101     {o_textbox,         4, 4, call_textbox},
1102     {o_menu,            7, 0, call_menu},
1103     {o_inputmenu,       7, 0, call_inputmenu},
1104     {o_checklist,       8, 0, call_checklist},
1105     {o_radiolist,       8, 0, call_radiolist},
1106     {o_inputbox,        4, 5, call_inputbox},
1107     {o_passwordbox,     4, 5, call_passwordbox},
1108 #ifdef HAVE_DLG_GAUGE
1109     {o_gauge,           4, 5, call_gauge},
1110     {o_pause,           5, 5, call_pause},
1111     {o_prgbox,          4, 5, call_prgbox},
1112     {o_programbox,      3, 4, call_programbox},
1113     {o_progressbox,     3, 4, call_progressbox},
1114 #endif
1115 #ifdef HAVE_DLG_FORMBOX
1116     {o_passwordform,   13, 0, call_password_form},
1117     {o_form,           13, 0, call_form},
1118 #endif
1119 #ifdef HAVE_MIXEDGAUGE
1120     {o_mixedgauge,      MIXEDGAUGE_BASE, 0, call_mixed_gauge},
1121 #endif
1122 #ifdef HAVE_DLG_MIXEDFORM
1123     {o_mixedform,      13, 0, call_mixed_form},
1124 #endif
1125 #ifdef HAVE_DLG_TAILBOX
1126     {o_tailbox,         4, 4, call_tailbox},
1127     {o_tailboxbg,       4, 4, call_tailboxbg},
1128 #endif
1129 #ifdef HAVE_XDIALOG
1130     {o_buildlist,       4, 0, call_buildlist},
1131     {o_calendar,        4, 7, call_calendar},
1132     {o_dselect,         4, 5, call_dselect},
1133     {o_editbox,         4, 4, call_editbox},
1134     {o_fselect,         4, 5, call_fselect},
1135     {o_rangebox,        5, 7, call_rangebox},
1136     {o_timebox,         4, 7, call_timebox},
1137     {o_treeview,        4, 0, call_treeview},
1138 #endif
1139 };
1140 /* *INDENT-ON* */
1141 
1142 static char *
1143 optionString(char **argv, int *num)
1144 {
1145     int next = *num + 1;
1146     char *result = argv[next];
1147     if (result == 0) {
1148 	char temp[80];
1149 	sprintf(temp, "Expected a string-parameter for %.20s", argv[*num]);
1150 	Usage(temp);
1151     }
1152     *num = next;
1153     return result;
1154 }
1155 
1156 static int
1157 optionValue(char **argv, int *num)
1158 {
1159     int next = *num + 1;
1160     char *src = argv[next];
1161     char *tmp = 0;
1162     int result = 0;
1163 
1164     if (src != 0) {
1165 	result = (int) strtol(src, &tmp, 0);
1166 	if (tmp == 0 || *tmp != 0)
1167 	    src = 0;
1168     }
1169 
1170     if (src == 0) {
1171 	char temp[80];
1172 	sprintf(temp, "Expected a numeric-parameter for %.20s", argv[*num]);
1173 	Usage(temp);
1174     }
1175     *num = next;
1176     return result;
1177 }
1178 
1179 /* Return exit-code for a named button */
1180 static int
1181 button_code(const char *name)
1182 {
1183     /* *INDENT-OFF* */
1184     static struct {
1185 	const char *name;
1186 	int code;
1187     } table[] = {
1188 	{ "ok",	    DLG_EXIT_OK },
1189 	{ "yes",    DLG_EXIT_OK },
1190 	{ "cancel", DLG_EXIT_CANCEL },
1191 	{ "no",	    DLG_EXIT_CANCEL },
1192 	{ "help",   DLG_EXIT_HELP },
1193 	{ "extra",  DLG_EXIT_EXTRA },
1194     };
1195     /* *INDENT-ON* */
1196 
1197     int code = DLG_EXIT_ERROR;
1198     size_t i;
1199 
1200     for (i = 0; i < (sizeof(table) / sizeof(table[0])); i++) {
1201 	if (!dlg_strcmp(name, table[i].name)) {
1202 	    code = table[i].code;
1203 	    break;
1204 	}
1205     }
1206 
1207     if (code == DLG_EXIT_ERROR) {
1208 	char temp[80];
1209 	sprintf(temp, "Button name \"%.20s\" unknown", name);
1210 	Usage(temp);
1211     }
1212 
1213     return code;
1214 }
1215 
1216 /*
1217  * Print parts of a message
1218  */
1219 static void
1220 PrintList(const char *const *list)
1221 {
1222     const char *leaf = strrchr(program, '/');
1223     unsigned n = 0;
1224 
1225     if (leaf != 0)
1226 	leaf++;
1227     else
1228 	leaf = program;
1229 
1230     while (*list != 0) {
1231 	fprintf(dialog_state.output, *list, n ? leaf : dialog_version());
1232 	(void) fputc('\n', dialog_state.output);
1233 	n = 1;
1234 	list++;
1235     }
1236 }
1237 
1238 static const Mode *
1239 lookupMode(eOptions code)
1240 {
1241     const Mode *modePtr = 0;
1242     unsigned n;
1243 
1244     for (n = 0; n < sizeof(modes) / sizeof(modes[0]); n++) {
1245 	if (modes[n].code == code) {
1246 	    modePtr = &modes[n];
1247 	    break;
1248 	}
1249     }
1250     return modePtr;
1251 }
1252 
1253 static int
1254 compare_opts(const void *a, const void *b)
1255 {
1256     Options *const *p = (Options * const *) a;
1257     Options *const *q = (Options * const *) b;
1258     return strcmp((*p)->name, (*q)->name);
1259 }
1260 
1261 /*
1262  * Print program's version.
1263  */
1264 static void
1265 PrintVersion(FILE *fp)
1266 {
1267     fprintf(fp, "Version: %s\n", dialog_version());
1268 }
1269 
1270 /*
1271  * Print program help-message
1272  */
1273 static void
1274 Help(void)
1275 {
1276     static const char *const tbl_1[] =
1277     {
1278 	"cdialog (ComeOn Dialog!) version %s",
1279 	"Copyright 2000-2012,2013 Thomas E. Dickey",
1280 	"This is free software; see the source for copying conditions.  There is NO",
1281 	"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.",
1282 	"",
1283 	"* Display dialog boxes from shell scripts *",
1284 	"",
1285 	"Usage: %s <options> { --and-widget <options> }",
1286 	"where options are \"common\" options, followed by \"box\" options",
1287 	"",
1288 #ifdef HAVE_RC_FILE
1289 	"Special options:",
1290 	"  [--create-rc \"file\"]",
1291 #endif
1292 	0
1293     }, *const tbl_3[] =
1294     {
1295 	"",
1296 	"Auto-size with height and width = 0. Maximize with height and width = -1.",
1297 	"Global-auto-size if also menu_height/list_height = 0.",
1298 	0
1299     };
1300     size_t limit = sizeof(options) / sizeof(options[0]);
1301     size_t j, k;
1302     const Options **opts;
1303 
1304     end_dialog();
1305     dialog_state.output = stdout;
1306 
1307     opts = dlg_calloc(const Options *, limit);
1308     assert_ptr(opts, "Help");
1309     for (j = 0; j < limit; ++j) {
1310 	opts[j] = &(options[j]);
1311     }
1312     qsort(opts, limit, sizeof(Options *), compare_opts);
1313 
1314     PrintList(tbl_1);
1315     fprintf(dialog_state.output, "Common options:\n ");
1316     for (j = k = 0; j < limit; j++) {
1317 	if ((opts[j]->pass & 1)
1318 	    && opts[j]->help != 0) {
1319 	    size_t len = 6 + strlen(opts[j]->name) + strlen(opts[j]->help);
1320 	    k += len;
1321 	    if (k > 75) {
1322 		fprintf(dialog_state.output, "\n ");
1323 		k = len;
1324 	    }
1325 	    fprintf(dialog_state.output, " [--%s%s%s]", opts[j]->name,
1326 		    *(opts[j]->help) ? " " : "", opts[j]->help);
1327 	}
1328     }
1329     fprintf(dialog_state.output, "\nBox options:\n");
1330     for (j = 0; j < limit; j++) {
1331 	if ((opts[j]->pass & 2) != 0
1332 	    && opts[j]->help != 0
1333 	    && lookupMode(opts[j]->code))
1334 	    fprintf(dialog_state.output, "  --%-12s %s\n", opts[j]->name,
1335 		    opts[j]->help);
1336     }
1337     PrintList(tbl_3);
1338 
1339     free(opts);
1340     dlg_exit(DLG_EXIT_OK);
1341 }
1342 
1343 #ifdef HAVE_DLG_TRACE
1344 /*
1345  * Only the first call to dlg_trace will open a trace file.  But each time
1346  * --trace is parsed, we show the whole parameter list as it is at that moment,
1347  * counting discarded parameters.  The only way to capture the whole parameter
1348  * list is if --trace is the first option.
1349  */
1350 static void
1351 process_trace_option(char **argv, int *offset)
1352 {
1353     int j;
1354 
1355     if (dialog_state.trace_output == 0) {
1356 	dlg_trace(optionString(argv, offset));
1357     } else {
1358 	dlg_trace_msg("# ignore extra --trace option\n");
1359 	*offset += 1;
1360     }
1361 
1362     dlg_trace_msg("# Parameters:\n");
1363     for (j = 0; argv[j] != 0; ++j) {
1364 	dlg_trace_msg("# argv[%d] = %s\n", j, argv[j]);
1365     }
1366 }
1367 #endif
1368 
1369 /*
1370  * "Common" options apply to all widgets more/less.  Most of the common options
1371  * set values in dialog_vars, a few set dialog_state and a couple write to the
1372  * output stream.
1373  */
1374 static int
1375 process_common_options(int argc, char **argv, int offset, bool output)
1376 {
1377     bool done = FALSE;
1378 
1379     dlg_trace_msg("# process_common_options, offset %d\n", offset);
1380 
1381     while (offset < argc && !done) {	/* Common options */
1382 	dlg_trace_msg("#\targv[%d] = %s\n", offset, argv[offset]);
1383 	switch (lookupOption(argv[offset], 1)) {
1384 	case o_title:
1385 	    dialog_vars.title = optionString(argv, &offset);
1386 	    break;
1387 	case o_backtitle:
1388 	    dialog_vars.backtitle = optionString(argv, &offset);
1389 	    break;
1390 	case o_separate_widget:
1391 	    dialog_state.separate_str = optionString(argv, &offset);
1392 	    break;
1393 	case o_separate_output:
1394 	    dialog_vars.separate_output = TRUE;
1395 	    break;
1396 	case o_colors:
1397 	    dialog_vars.colors = TRUE;
1398 	    break;
1399 	case o_cr_wrap:
1400 	    dialog_vars.cr_wrap = TRUE;
1401 	    break;
1402 	case o_no_nl_expand:
1403 	    dialog_vars.no_nl_expand = TRUE;
1404 	    break;
1405 	case o_no_collapse:
1406 	    dialog_vars.nocollapse = TRUE;
1407 	    break;
1408 	case o_no_kill:
1409 	    dialog_vars.cant_kill = TRUE;
1410 	    break;
1411 	case o_nocancel:
1412 	    dialog_vars.nocancel = TRUE;
1413 	    break;
1414 	case o_nook:
1415 	    dialog_vars.nook = TRUE;
1416 	    break;
1417 	case o_quoted:
1418 	    dialog_vars.quoted = TRUE;
1419 	    break;
1420 	case o_single_quoted:
1421 	    dialog_vars.single_quoted = TRUE;
1422 	    break;
1423 	case o_size_err:
1424 	    dialog_vars.size_err = TRUE;
1425 	    break;
1426 	case o_beep:
1427 	    dialog_vars.beep_signal = TRUE;
1428 	    break;
1429 	case o_beep_after:
1430 	    dialog_vars.beep_after_signal = TRUE;
1431 	    break;
1432 	case o_scrollbar:
1433 	    dialog_state.use_scrollbar = TRUE;
1434 	    break;
1435 	case o_shadow:
1436 	    dialog_state.use_shadow = TRUE;
1437 	    break;
1438 	case o_defaultno:
1439 	    dialog_vars.defaultno = TRUE;
1440 	    dialog_vars.default_button = DLG_EXIT_CANCEL;
1441 	    break;
1442 	case o_default_button:
1443 	    dialog_vars.default_button = button_code(optionString(argv, &offset));
1444 	    dialog_vars.defaultno = dialog_vars.default_button == DLG_EXIT_CANCEL;
1445 	    break;
1446 	case o_default_item:
1447 	    dialog_vars.default_item = optionString(argv, &offset);
1448 	    break;
1449 	case o_insecure:
1450 	    dialog_vars.insecure = TRUE;
1451 	    break;
1452 	case o_item_help:
1453 	    dialog_vars.item_help = TRUE;
1454 	    break;
1455 	case o_help_line:
1456 	    dialog_vars.help_line = optionString(argv, &offset);
1457 	    break;
1458 	case o_help_file:
1459 	    dialog_vars.help_file = optionString(argv, &offset);
1460 	    break;
1461 	case o_help_button:
1462 	    dialog_vars.help_button = TRUE;
1463 	    break;
1464 	case o_help_status:
1465 	    dialog_vars.help_status = TRUE;
1466 	    break;
1467 	case o_help_tags:
1468 	    dialog_vars.help_tags = TRUE;
1469 	    break;
1470 	case o_extra_button:
1471 	    dialog_vars.extra_button = TRUE;
1472 	    break;
1473 	case o_ignore:
1474 	    ignore_unknown = TRUE;
1475 	    break;
1476 	case o_keep_window:
1477 	    dialog_vars.keep_window = TRUE;
1478 	    break;
1479 	case o_last_key:
1480 	    dialog_vars.last_key = TRUE;
1481 	    break;
1482 	case o_no_shadow:
1483 	    dialog_state.use_shadow = FALSE;
1484 	    break;
1485 	case o_print_size:
1486 	    dialog_vars.print_siz = TRUE;
1487 	    break;
1488 	case o_print_maxsize:
1489 	    if (output) {
1490 		/*
1491 		 * If this is the last option, we do not want any error
1492 		 * messages - just our output.  Calling end_dialog() cancels
1493 		 * the refresh() at the end of the program as well.
1494 		 */
1495 		if (argv[offset + 1] == 0) {
1496 		    ignore_unknown = TRUE;
1497 		    end_dialog();
1498 		}
1499 		fflush(dialog_state.output);
1500 		fprintf(dialog_state.output, "MaxSize: %d, %d\n", SLINES, SCOLS);
1501 	    }
1502 	    break;
1503 	case o_print_version:
1504 	    if (output) {
1505 		PrintVersion(dialog_state.output);
1506 	    }
1507 	    break;
1508 	case o_separator:
1509 	case o_output_separator:
1510 	    dialog_vars.output_separator = optionString(argv, &offset);
1511 	    break;
1512 	case o_column_separator:
1513 	    dialog_vars.column_separator = optionString(argv, &offset);
1514 	    break;
1515 	case o_tab_correct:
1516 	    dialog_vars.tab_correct = TRUE;
1517 	    break;
1518 	case o_sleep:
1519 	    dialog_vars.sleep_secs = optionValue(argv, &offset);
1520 	    break;
1521 	case o_timeout:
1522 	    dialog_vars.timeout_secs = optionValue(argv, &offset);
1523 	    break;
1524 	case o_max_input:
1525 	    dialog_vars.max_input = optionValue(argv, &offset);
1526 	    break;
1527 	case o_tab_len:
1528 	    dialog_state.tab_len = optionValue(argv, &offset);
1529 	    break;
1530 	case o_trim:
1531 	    dialog_vars.trim_whitespace = TRUE;
1532 	    break;
1533 	case o_visit_items:
1534 	    dialog_state.visit_items = TRUE;
1535 	    dialog_state.visit_cols = 1;
1536 	    break;
1537 	case o_aspect:
1538 	    dialog_state.aspect_ratio = optionValue(argv, &offset);
1539 	    break;
1540 	case o_begin:
1541 	    dialog_vars.begin_set = TRUE;
1542 	    dialog_vars.begin_y = optionValue(argv, &offset);
1543 	    dialog_vars.begin_x = optionValue(argv, &offset);
1544 	    break;
1545 	case o_clear:
1546 	    dialog_vars.dlg_clear_screen = TRUE;
1547 	    break;
1548 	case o_yes_label:
1549 	    dialog_vars.yes_label = optionString(argv, &offset);
1550 	    break;
1551 	case o_no_label:
1552 	    dialog_vars.no_label = optionString(argv, &offset);
1553 	    break;
1554 	case o_ok_label:
1555 	    dialog_vars.ok_label = optionString(argv, &offset);
1556 	    break;
1557 	case o_cancel_label:
1558 	    dialog_vars.cancel_label = optionString(argv, &offset);
1559 	    break;
1560 	case o_extra_label:
1561 	    dialog_vars.extra_label = optionString(argv, &offset);
1562 	    break;
1563 	case o_exit_label:
1564 	    dialog_vars.exit_label = optionString(argv, &offset);
1565 	    break;
1566 	case o_help_label:
1567 	    dialog_vars.help_label = optionString(argv, &offset);
1568 	    break;
1569 	case o_date_format:
1570 	    dialog_vars.date_format = optionString(argv, &offset);
1571 	    break;
1572 	case o_time_format:
1573 	    dialog_vars.time_format = optionString(argv, &offset);
1574 	    break;
1575 	case o_keep_tite:
1576 	    dialog_vars.keep_tite = TRUE;
1577 	    break;
1578 	case o_ascii_lines:
1579 	    dialog_vars.ascii_lines = TRUE;
1580 	    dialog_vars.no_lines = FALSE;
1581 	    break;
1582 	case o_no_lines:
1583 	    dialog_vars.no_lines = TRUE;
1584 	    dialog_vars.ascii_lines = FALSE;
1585 	    break;
1586 	case o_no_mouse:
1587 	    dialog_state.no_mouse = TRUE;
1588 	    mouse_close();
1589 	    break;
1590 #ifdef HAVE_WHIPTAIL
1591 	case o_topleft:
1592 	    dialog_vars.begin_set = TRUE;
1593 	    dialog_vars.begin_y = 0;
1594 	    dialog_vars.begin_x = 0;
1595 	    break;
1596 	case o_fullbutton:
1597 	    /* ignore */
1598 	    break;
1599 #endif
1600 	    /* options of Xdialog which we ignore */
1601 	case o_icon:
1602 	case o_wmclass:
1603 	    (void) optionString(argv, &offset);
1604 	    /* FALLTHRU */
1605 	case o_allow_close:
1606 	case o_auto_placement:
1607 	case o_fixed_font:
1608 	case o_keep_colors:
1609 	case o_no_close:
1610 	case o_no_cr_wrap:
1611 	case o_screen_center:
1612 	case o_smooth:
1613 	case o_under_mouse:
1614 	    break;
1615 	case o_unknown:
1616 	    if (ignore_unknown)
1617 		break;
1618 	    /* FALLTHRU */
1619 	default:		/* no more common options */
1620 	    done = TRUE;
1621 	    break;
1622 #ifdef HAVE_DLG_TRACE
1623 	case o_trace:
1624 	    process_trace_option(argv, &offset);
1625 	    break;
1626 #endif
1627 #if defined(HAVE_XDIALOG2) || defined(HAVE_WHIPTAIL)
1628 	case o_no_items:
1629 	    dialog_vars.no_items = TRUE;
1630 	    break;
1631 	case o_no_tags:
1632 	    dialog_vars.no_tags = TRUE;
1633 	    break;
1634 #endif
1635 	}
1636 	if (!done)
1637 	    offset++;
1638     }
1639     return offset;
1640 }
1641 
1642 /*
1643  * Initialize options at the start of a series of common options culminating
1644  * in a widget.
1645  */
1646 static void
1647 init_result(char *buffer)
1648 {
1649     static bool first = TRUE;
1650     static char **special_argv = 0;
1651     static int special_argc = 0;
1652 
1653     dlg_trace_msg("# init_result\n");
1654 
1655     /* clear everything we do not save for the next widget */
1656     memset(&dialog_vars, 0, sizeof(dialog_vars));
1657 
1658     dialog_vars.input_result = buffer;
1659     dialog_vars.input_result[0] = '\0';
1660 
1661     dialog_vars.default_button = -1;
1662 
1663     /*
1664      * The first time this is called, check for common options given by an
1665      * environment variable.
1666      */
1667     if (first) {
1668 	char *env = getenv("DIALOGOPTS");
1669 	if (env != 0)
1670 	    env = dlg_strclone(env);
1671 	if (env != 0) {
1672 	    special_argv = dlg_string_to_argv(env);
1673 	    special_argc = dlg_count_argv(special_argv);
1674 	}
1675 	first = FALSE;
1676     }
1677 
1678     /*
1679      * If we are not checking memory leaks, just do the parse of the
1680      * environment once.
1681      */
1682     if (special_argv != 0) {
1683 	process_common_options(special_argc, special_argv, 0, FALSE);
1684 #ifdef NO_LEAKS
1685 	free(special_argv[0]);
1686 	free(special_argv);
1687 	special_argv = 0;
1688 	special_argc = 0;
1689 	first = TRUE;
1690 #endif
1691     }
1692 }
1693 
1694 int
1695 main(int argc, char *argv[])
1696 {
1697     char temp[256];
1698     bool esc_pressed = FALSE;
1699     bool keep_tite = FALSE;
1700     int offset = 1;
1701     int offset_add;
1702     int retval = DLG_EXIT_OK;
1703     int j, have;
1704     eOptions code;
1705     const Mode *modePtr;
1706     char my_buffer[MAX_LEN + 1];
1707 
1708     memset(&dialog_state, 0, sizeof(dialog_state));
1709     memset(&dialog_vars, 0, sizeof(dialog_vars));
1710 
1711 #if defined(ENABLE_NLS)
1712     /* initialize locale support */
1713     setlocale(LC_ALL, "");
1714     bindtextdomain(NLS_TEXTDOMAIN, LOCALEDIR);
1715     textdomain(NLS_TEXTDOMAIN);
1716 #elif defined(HAVE_SETLOCALE)
1717     (void) setlocale(LC_ALL, "");
1718 #endif
1719 
1720     unescape_argv(&argc, &argv);
1721     program = argv[0];
1722     dialog_state.output = stderr;
1723     dialog_state.input = stdin;
1724 
1725     /*
1726      * Look for the last --stdout, --stderr or --output-fd option, and use
1727      * that.  We can only write to one of them.  If --stdout is used, that
1728      * can interfere with initializing the curses library, so we want to
1729      * know explicitly if it is used.
1730      *
1731      * Also, look for any --version or --help message, processing those
1732      * immediately.
1733      */
1734     while (offset < argc) {
1735 	int base = offset;
1736 	switch (lookupOption(argv[offset], 7)) {
1737 	case o_stdout:
1738 	    dialog_state.output = stdout;
1739 	    break;
1740 	case o_stderr:
1741 	    dialog_state.output = stderr;
1742 	    break;
1743 	case o_input_fd:
1744 	    if ((j = optionValue(argv, &offset)) < 0
1745 		|| (dialog_state.input = fdopen(j, "r")) == 0)
1746 		dlg_exiterr("Cannot open input-fd\n");
1747 	    break;
1748 	case o_output_fd:
1749 	    if ((j = optionValue(argv, &offset)) < 0
1750 		|| (dialog_state.output = fdopen(j, "w")) == 0)
1751 		dlg_exiterr("Cannot open output-fd\n");
1752 	    break;
1753 	case o_keep_tite:
1754 	    keep_tite = TRUE;
1755 	    break;
1756 	case o_version:
1757 	    dialog_state.output = stdout;
1758 	    PrintVersion(dialog_state.output);
1759 	    exit(DLG_EXIT_OK);
1760 	    break;
1761 	case o_help:
1762 	    Help();
1763 	    break;
1764 #ifdef HAVE_DLG_TRACE
1765 	case o_trace:
1766 	    /*
1767 	     * Process/remove the --trace option if it is the first option.
1768 	     * Otherwise, process it in more/less expected order as a
1769 	     * "common" option.
1770 	     */
1771 	    if (base == 1) {
1772 		process_trace_option(argv, &offset);
1773 		break;
1774 	    } else {
1775 		++offset;
1776 		continue;
1777 	    }
1778 #endif
1779 	default:
1780 	    ++offset;
1781 	    continue;
1782 	}
1783 	dlg_trace_msg("# discarding %d parameters starting with argv[%d] (%s)\n",
1784 		      1 + offset - base, base,
1785 		      argv[base]);
1786 	for (j = base; j < argc; ++j) {
1787 	    dialog_argv[j] = dialog_argv[j + 1 + (offset - base)];
1788 	    if (dialog_opts != 0)
1789 		dialog_opts[j] = dialog_opts[j + 1 + (offset - base)];
1790 	}
1791 	argc -= (1 + offset - base);
1792 	offset = base;
1793     }
1794     offset = 1;
1795     init_result(my_buffer);
1796 
1797     /*
1798      * Dialog's output may be redirected (see above).  Handle the special
1799      * case of options that only report information without interaction.
1800      */
1801     if (argc == 2) {
1802 	switch (lookupOption(argv[1], 7)) {
1803 	case o_print_maxsize:
1804 	    (void) initscr();
1805 	    endwin();
1806 	    fflush(dialog_state.output);
1807 	    fprintf(dialog_state.output, "MaxSize: %d, %d\n", SLINES, SCOLS);
1808 	    break;
1809 	case o_print_version:
1810 	    PrintVersion(dialog_state.output);
1811 	    break;
1812 	case o_clear:
1813 	    initscr();
1814 	    refresh();
1815 	    endwin();
1816 	    break;
1817 	case o_ignore:
1818 	    break;
1819 	default:
1820 	    Help();
1821 	    break;
1822 	}
1823 	return DLG_EXIT_OK;
1824     }
1825 
1826     if (argc < 2) {
1827 	Help();
1828     }
1829 #ifdef HAVE_RC_FILE
1830     if (lookupOption(argv[1], 7) == o_create_rc) {
1831 	if (argc != 3) {
1832 	    sprintf(temp, "Expected a filename for %.50s", argv[1]);
1833 	    Usage(temp);
1834 	}
1835 	if (dlg_parse_rc() == -1)	/* Read the configuration file */
1836 	    dlg_exiterr("dialog: dlg_parse_rc");
1837 	dlg_create_rc(argv[2]);
1838 	return DLG_EXIT_OK;
1839     }
1840 #endif
1841 
1842     dialog_vars.keep_tite = keep_tite;	/* init_result() cleared global */
1843 
1844     init_dialog(dialog_state.input, dialog_state.output);
1845 
1846     while (offset < argc && !esc_pressed) {
1847 	init_result(my_buffer);
1848 
1849 	offset = process_common_options(argc, argv, offset, TRUE);
1850 
1851 	if (argv[offset] == NULL) {
1852 	    if (ignore_unknown)
1853 		break;
1854 	    Usage("Expected a box option");
1855 	}
1856 
1857 	if (lookupOption(argv[offset], 2) != o_checklist
1858 	    && dialog_vars.separate_output) {
1859 	    sprintf(temp, "Expected --checklist, not %.20s", argv[offset]);
1860 	    Usage(temp);
1861 	}
1862 
1863 	if (dialog_state.aspect_ratio == 0)
1864 	    dialog_state.aspect_ratio = DEFAULT_ASPECT_RATIO;
1865 
1866 	dlg_put_backtitle();
1867 
1868 	/* use a table to look for the requested mode, to avoid code duplication */
1869 
1870 	modePtr = 0;
1871 	if ((code = lookupOption(argv[offset], 2)) != o_unknown)
1872 	    modePtr = lookupMode(code);
1873 	if (modePtr == 0) {
1874 	    sprintf(temp, "%s option %.20s",
1875 		    lookupOption(argv[offset], 7) != o_unknown
1876 		    ? "Unexpected"
1877 		    : "Unknown",
1878 		    argv[offset]);
1879 	    Usage(temp);
1880 	}
1881 
1882 	have = arg_rest(&argv[offset]);
1883 	if (have < modePtr->argmin) {
1884 	    sprintf(temp, "Expected at least %d tokens for %.20s, have %d",
1885 		    modePtr->argmin - 1, argv[offset],
1886 		    have - 1);
1887 	    Usage(temp);
1888 	}
1889 	if (modePtr->argmax && have > modePtr->argmax) {
1890 	    sprintf(temp,
1891 		    "Expected no more than %d tokens for %.20s, have %d",
1892 		    modePtr->argmax - 1, argv[offset],
1893 		    have - 1);
1894 	    Usage(temp);
1895 	}
1896 
1897 	/*
1898 	 * Trim whitespace from non-title option values, e.g., the ones that
1899 	 * will be used as captions or prompts.   Do that only for the widget
1900 	 * we are about to process, since the "--trim" option is reset before
1901 	 * accumulating options for each widget.
1902 	 */
1903 	for (j = offset + 1; j <= offset + have; j++) {
1904 	    switch (lookupOption(argv[j - 1], 7)) {
1905 	    case o_unknown:
1906 	    case o_title:
1907 	    case o_backtitle:
1908 	    case o_help_line:
1909 	    case o_help_file:
1910 		break;
1911 	    default:
1912 		if (argv[j] != 0) {
1913 		    char *argv_j = strdup(argv[j]);
1914 		    if (argv_j != 0) {
1915 			dlg_trim_string(argv_j);
1916 			argv[j] = argv_j;
1917 		    } else {
1918 			argv[j] = strdup("?");
1919 		    }
1920 		}
1921 		break;
1922 	    }
1923 	}
1924 
1925 	retval = show_result((*(modePtr->jumper)) (dialog_vars.title,
1926 						   argv + offset,
1927 						   &offset_add));
1928 	dlg_trace_msg("# widget returns %d\n", retval);
1929 	offset += offset_add;
1930 
1931 	if (dialog_vars.input_result != my_buffer) {
1932 	    free(dialog_vars.input_result);
1933 	    dialog_vars.input_result = 0;
1934 	}
1935 
1936 	if (retval == DLG_EXIT_ESC) {
1937 	    esc_pressed = TRUE;
1938 	} else {
1939 
1940 	    if (dialog_vars.beep_after_signal)
1941 		(void) beep();
1942 
1943 	    if (dialog_vars.sleep_secs)
1944 		(void) napms(dialog_vars.sleep_secs * 1000);
1945 
1946 	    if (offset < argc) {
1947 		switch (lookupOption(argv[offset], 7)) {
1948 		case o_and_widget:
1949 		    offset++;
1950 		    break;
1951 		case o_unknown:
1952 		    sprintf(temp, "Expected --and-widget, not %.20s",
1953 			    argv[offset]);
1954 		    Usage(temp);
1955 		    break;
1956 		default:
1957 		    /* if we got a cancel, etc., stop chaining */
1958 		    if (retval != DLG_EXIT_OK)
1959 			esc_pressed = TRUE;
1960 		    else
1961 			dialog_vars.dlg_clear_screen = TRUE;
1962 		    break;
1963 		}
1964 	    }
1965 	    if (dialog_vars.dlg_clear_screen)
1966 		dlg_clear();
1967 	}
1968     }
1969 
1970     dlg_killall_bg(&retval);
1971     if (dialog_state.screen_initialized) {
1972 	(void) refresh();
1973 	end_dialog();
1974     }
1975     dlg_exit(retval);
1976 }
1977