2 * $Id: util.c,v 1.260 2014/09/01 17:01:01 tom Exp $
4 * util.c -- miscellaneous utilities for dialog
6 * Copyright 2000-2013,2014 Thomas E. Dickey
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.
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.
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.
23 * An earlier version of this program lists as authors
24 * Savio Lam (lam836@cs.cuhk.hk)
38 #ifdef NCURSES_VERSION
39 #if defined(HAVE_NCURSESW_TERM_H)
40 #include <ncursesw/term.h>
41 #elif defined(HAVE_NCURSES_TERM_H)
42 #include <ncurses/term.h>
48 #if defined(HAVE_WCHGAT)
49 # if defined(NCURSES_VERSION_PATCH)
50 # if NCURSES_VERSION_PATCH >= 20060715
63 DIALOG_STATE dialog_state;
64 DIALOG_VARS dialog_vars;
66 #if !(defined(HAVE_WGETPARENT) && defined(HAVE_WINDOW__PARENT))
67 #define NEED_WGETPARENT 1
69 #undef NEED_WGETPARENT
72 #define concat(a,b) a##b
75 #define RC_DATA(name,comment) , #name "_color", comment " color"
77 #define RC_DATA(name,comment) /*nothing */
81 #include <dlg_colors.h>
82 #define COLOR_DATA(upr) , \
83 concat(DLGC_FG_,upr), \
84 concat(DLGC_BG_,upr), \
87 #define COLOR_DATA(upr) /*nothing */
90 #define DATA(atr,upr,lwr,cmt) { atr COLOR_DATA(upr) RC_DATA(lwr,cmt) }
92 #define UseShadow(dw) ((dw) != 0 && (dw)->normal != 0 && (dw)->shadow != 0)
95 * Table of color and attribute values, default is for mono display.
96 * The order matches the DIALOG_ATR() values.
99 DIALOG_COLORS dlg_color_table[] =
101 DATA(A_NORMAL, SCREEN, screen, "Screen"),
102 DATA(A_NORMAL, SHADOW, shadow, "Shadow"),
103 DATA(A_REVERSE, DIALOG, dialog, "Dialog box"),
104 DATA(A_REVERSE, TITLE, title, "Dialog box title"),
105 DATA(A_REVERSE, BORDER, border, "Dialog box border"),
106 DATA(A_BOLD, BUTTON_ACTIVE, button_active, "Active button"),
107 DATA(A_DIM, BUTTON_INACTIVE, button_inactive, "Inactive button"),
108 DATA(A_UNDERLINE, BUTTON_KEY_ACTIVE, button_key_active, "Active button key"),
109 DATA(A_UNDERLINE, BUTTON_KEY_INACTIVE, button_key_inactive, "Inactive button key"),
110 DATA(A_NORMAL, BUTTON_LABEL_ACTIVE, button_label_active, "Active button label"),
111 DATA(A_NORMAL, BUTTON_LABEL_INACTIVE, button_label_inactive, "Inactive button label"),
112 DATA(A_REVERSE, INPUTBOX, inputbox, "Input box"),
113 DATA(A_REVERSE, INPUTBOX_BORDER, inputbox_border, "Input box border"),
114 DATA(A_REVERSE, SEARCHBOX, searchbox, "Search box"),
115 DATA(A_REVERSE, SEARCHBOX_TITLE, searchbox_title, "Search box title"),
116 DATA(A_REVERSE, SEARCHBOX_BORDER, searchbox_border, "Search box border"),
117 DATA(A_REVERSE, POSITION_INDICATOR, position_indicator, "File position indicator"),
118 DATA(A_REVERSE, MENUBOX, menubox, "Menu box"),
119 DATA(A_REVERSE, MENUBOX_BORDER, menubox_border, "Menu box border"),
120 DATA(A_REVERSE, ITEM, item, "Item"),
121 DATA(A_NORMAL, ITEM_SELECTED, item_selected, "Selected item"),
122 DATA(A_REVERSE, TAG, tag, "Tag"),
123 DATA(A_REVERSE, TAG_SELECTED, tag_selected, "Selected tag"),
124 DATA(A_NORMAL, TAG_KEY, tag_key, "Tag key"),
125 DATA(A_BOLD, TAG_KEY_SELECTED, tag_key_selected, "Selected tag key"),
126 DATA(A_REVERSE, CHECK, check, "Check box"),
127 DATA(A_REVERSE, CHECK_SELECTED, check_selected, "Selected check box"),
128 DATA(A_REVERSE, UARROW, uarrow, "Up arrow"),
129 DATA(A_REVERSE, DARROW, darrow, "Down arrow"),
130 DATA(A_NORMAL, ITEMHELP, itemhelp, "Item help-text"),
131 DATA(A_BOLD, FORM_ACTIVE_TEXT, form_active_text, "Active form text"),
132 DATA(A_REVERSE, FORM_TEXT, form_text, "Form text"),
133 DATA(A_NORMAL, FORM_ITEM_READONLY, form_item_readonly, "Readonly form item"),
134 DATA(A_REVERSE, GAUGE, gauge, "Dialog box gauge"),
135 DATA(A_REVERSE, BORDER2, border2, "Dialog box border2"),
136 DATA(A_REVERSE, INPUTBOX_BORDER2, inputbox_border2, "Input box border2"),
137 DATA(A_REVERSE, SEARCHBOX_BORDER2, searchbox_border2, "Search box border2"),
138 DATA(A_REVERSE, MENUBOX_BORDER2, menubox_border2, "Menu box border2")
143 * Maintain a list of subwindows so that we can delete them to cleanup.
144 * More important, this provides a fallback when wgetparent() is not available.
147 add_subwindow(WINDOW *parent, WINDOW *child)
149 DIALOG_WINDOWS *p = dlg_calloc(DIALOG_WINDOWS, 1);
154 p->next = dialog_state.all_subwindows;
155 dialog_state.all_subwindows = p;
160 del_subwindows(WINDOW *parent)
162 DIALOG_WINDOWS *p = dialog_state.all_subwindows;
163 DIALOG_WINDOWS *q = 0;
167 if (p->normal == parent) {
171 dialog_state.all_subwindows = r;
185 * Display background title if it exists ...
188 dlg_put_backtitle(void)
192 if (dialog_vars.backtitle != NULL) {
193 chtype attr = A_NORMAL;
194 int backwidth = dlg_count_columns(dialog_vars.backtitle);
196 (void) wattrset(stdscr, screen_attr);
197 (void) wmove(stdscr, 0, 1);
198 dlg_print_text(stdscr, dialog_vars.backtitle, COLS - 2, &attr);
199 for (i = 0; i < COLS - backwidth; i++)
200 (void) waddch(stdscr, ' ');
201 (void) wmove(stdscr, 1, 1);
202 for (i = 0; i < COLS - 2; i++)
203 (void) waddch(stdscr, dlg_boxchar(ACS_HLINE));
206 (void) wnoutrefresh(stdscr);
210 * Set window to attribute 'attr'. There are more efficient ways to do this,
211 * but will not work on older/buggy ncurses versions.
214 dlg_attr_clear(WINDOW *win, int height, int width, chtype attr)
218 (void) wattrset(win, attr);
219 for (i = 0; i < height; i++) {
220 (void) wmove(win, i, 0);
221 for (j = 0; j < width; j++)
222 (void) waddch(win, ' ');
224 (void) touchwin(win);
230 dlg_attr_clear(stdscr, LINES, COLS, screen_attr);
233 #define isprivate(s) ((s) != 0 && strstr(s, "\033[?") != 0)
235 #define TTY_DEVICE "/dev/tty"
238 * If $DIALOG_TTY exists, allow the program to try to open the terminal
239 * directly when stdout is redirected. By default we require the "--stdout"
240 * option to be given, but some scripts were written making use of the
241 * behavior of dialog which tried opening the terminal anyway.
246 char *result = getenv("DIALOG_TTY");
247 if (result != 0 && atoi(result) == 0)
253 * Open the terminal directly. If one of stdin, stdout or stderr really points
254 * to a tty, use it. Otherwise give up and open /dev/tty.
257 open_terminal(char **result, int mode)
259 const char *device = TTY_DEVICE;
260 if (!isatty(fileno(stderr))
261 || (device = ttyname(fileno(stderr))) == 0) {
262 if (!isatty(fileno(stdout))
263 || (device = ttyname(fileno(stdout))) == 0) {
264 if (!isatty(fileno(stdin))
265 || (device = ttyname(fileno(stdin))) == 0) {
270 *result = dlg_strclone(device);
271 return open(device, mode);
274 #ifdef NCURSES_VERSION
279 int fd = fileno(dialog_state.screen_output);
281 buffer[0] = (char) ch;
282 return (int) write(fd, buffer, (size_t) 1);
287 * Do some initialization for dialog.
289 * 'input' is the real tty input of dialog. Usually it is stdin, but if
290 * --input-fd option is used, it may be anything.
292 * 'output' is where dialog will send its result. Usually it is stderr, but
293 * if --stdout or --output-fd is used, it may be anything. We are concerned
294 * mainly with the case where it happens to be the same as stdout.
297 init_dialog(FILE *input, FILE *output)
302 setlocale(LC_ALL, "");
304 dialog_state.output = output;
305 dialog_state.tab_len = TAB_LEN;
306 dialog_state.aspect_ratio = DEFAULT_ASPECT_RATIO;
308 dialog_state.use_colors = USE_COLORS; /* use colors by default? */
309 dialog_state.use_shadow = USE_SHADOW; /* shadow dialog boxes by default? */
313 if (dlg_parse_rc() == -1) /* Read the configuration file */
314 dlg_exiterr("init_dialog: dlg_parse_rc");
318 * Some widgets (such as gauge) may read from the standard input. Pipes
319 * only connect stdout/stdin, so there is not much choice. But reading a
320 * pipe would get in the way of curses' normal reading stdin for getch.
322 * As in the --stdout (see below), reopening the terminal does not always
323 * work properly. dialog provides a --pipe-fd option for this purpose. We
324 * test that case first (differing fileno's for input/stdin). If the
325 * fileno's are equal, but we're not reading from a tty, see if we can open
328 dialog_state.pipe_input = stdin;
329 if (fileno(input) != fileno(stdin)) {
330 if ((fd1 = dup(fileno(input))) >= 0
331 && (fd2 = dup(fileno(stdin))) >= 0) {
332 (void) dup2(fileno(input), fileno(stdin));
333 dialog_state.pipe_input = fdopen(fd2, "r");
334 if (fileno(stdin) != 0) /* some functions may read fd #0 */
335 (void) dup2(fileno(stdin), 0);
337 dlg_exiterr("cannot open tty-input");
340 } else if (!isatty(fileno(stdin))) {
341 if ((fd1 = open_terminal(&device, O_RDONLY)) >= 0) {
342 if ((fd2 = dup(fileno(stdin))) >= 0) {
343 dialog_state.pipe_input = fdopen(fd2, "r");
344 if (freopen(device, "r", stdin) == 0)
345 dlg_exiterr("cannot open tty-input");
346 if (fileno(stdin) != 0) /* some functions may read fd #0 */
347 (void) dup2(fileno(stdin), 0);
355 * If stdout is not a tty and dialog is called with the --stdout option, we
356 * have to provide for a way to write to the screen.
358 * The curses library normally writes its output to stdout, leaving stderr
359 * free for scripting. Scripts are simpler when stdout is redirected. The
360 * newterm function is useful; it allows us to specify where the output
361 * goes. Reopening the terminal is not portable since several
362 * configurations do not allow this to work properly:
364 * a) some getty implementations (and possibly broken tty drivers, e.g., on
365 * HPUX 10 and 11) cause stdin to act as if it is still in cooked mode
366 * even though results from ioctl's state that it is successfully
367 * altered to raw mode. Broken is the proper term.
369 * b) the user may not have permissions on the device, e.g., if one su's
370 * from the login user to another non-privileged user.
372 if (!isatty(fileno(stdout))
373 && (fileno(stdout) == fileno(output) || dialog_tty())) {
374 if ((fd1 = open_terminal(&device, O_WRONLY)) >= 0
375 && (dialog_state.screen_output = fdopen(fd1, "w")) != 0) {
376 if (newterm(NULL, dialog_state.screen_output, stdin) == 0) {
377 dlg_exiterr("cannot initialize curses");
381 dlg_exiterr("cannot open tty-output");
384 dialog_state.screen_output = stdout;
387 #ifdef NCURSES_VERSION
389 * Cancel xterm's alternate-screen mode.
391 if (!dialog_vars.keep_tite
392 && (fileno(dialog_state.screen_output) != fileno(stdout)
393 || isatty(fileno(dialog_state.screen_output)))
394 && key_mouse != 0 /* xterm and kindred */
395 && isprivate(enter_ca_mode)
396 && isprivate(exit_ca_mode)) {
398 * initscr() or newterm() already wrote enter_ca_mode as a side
399 * effect of initializing the screen. It would be nice to not even
400 * do that, but we do not really have access to the correct copy of
401 * the terminfo description until those functions have been invoked.
404 (void) tputs(exit_ca_mode, 0, my_putc);
405 (void) tputs(clear_screen, 0, my_putc);
407 * Prevent ncurses from switching "back" to the normal screen when
408 * exiting from dialog. That would move the cursor to the original
409 * location saved in xterm. Normally curses sets the cursor position
410 * to the first line after the display, but the alternate screen
411 * switching is done after that point.
413 * Cancelling the strings altogether also works around the buggy
414 * implementation of alternate-screen in rxvt, etc., which clear
415 * more of the display than they should.
424 (void) keypad(stdscr, TRUE);
428 if (!dialog_state.no_mouse) {
432 dialog_state.screen_initialized = TRUE;
435 if (dialog_state.use_colors || dialog_state.use_shadow)
436 dlg_color_setup(); /* Set up colors */
439 /* Set screen to screen attribute */
444 static int defined_colors = 1; /* pair-0 is reserved */
446 * Setup for color display
449 dlg_color_setup(void)
453 if (has_colors()) { /* Terminal supports color? */
454 (void) start_color();
456 #if defined(HAVE_USE_DEFAULT_COLORS)
457 use_default_colors();
460 #if defined(__NetBSD__) && defined(_CURSES_)
461 #define C_ATTR(x,y) (((x) != 0 ? A_BOLD : 0) | COLOR_PAIR((y)))
462 /* work around bug in NetBSD curses */
463 for (i = 0; i < sizeof(dlg_color_table) /
464 sizeof(dlg_color_table[0]); i++) {
466 /* Initialize color pairs */
467 (void) init_pair(i + 1,
468 dlg_color_table[i].fg,
469 dlg_color_table[i].bg);
471 /* Setup color attributes */
472 dlg_color_table[i].atr = C_ATTR(dlg_color_table[i].hilite, i + 1);
474 defined_colors = i + 1;
476 for (i = 0; i < sizeof(dlg_color_table) /
477 sizeof(dlg_color_table[0]); i++) {
479 /* Initialize color pairs */
480 chtype color = dlg_color_pair(dlg_color_table[i].fg,
481 dlg_color_table[i].bg);
483 /* Setup color attributes */
484 dlg_color_table[i].atr = ((dlg_color_table[i].hilite
491 dialog_state.use_colors = FALSE;
492 dialog_state.use_shadow = FALSE;
497 dlg_color_count(void)
499 return sizeof(dlg_color_table) / sizeof(dlg_color_table[0]);
503 * Wrapper for getattrs(), or the more cumbersome X/Open wattr_get().
506 dlg_get_attrs(WINDOW *win)
510 result = (chtype) getattrs(win);
514 wattr_get(win, &my_result, &my_pair, NULL);
521 * Reuse color pairs (they are limited), returning a COLOR_PAIR() value if we
522 * have (or can) define a pair with the given color as foreground on the
523 * window's defined background.
526 dlg_color_pair(int foreground, int background)
533 for (pair = 1; pair < defined_colors; ++pair) {
534 if (pair_content((short) pair, &fg, &bg) != ERR
536 && bg == background) {
537 result = (chtype) COLOR_PAIR(pair);
542 if (!found && (defined_colors + 1) < COLOR_PAIRS) {
543 pair = defined_colors++;
544 (void) init_pair((short) pair, (short) foreground, (short) background);
545 result = (chtype) COLOR_PAIR(pair);
551 * Reuse color pairs (they are limited), returning a COLOR_PAIR() value if we
552 * have (or can) define a pair with the given color as foreground on the
553 * window's defined background.
556 define_color(WINDOW *win, int foreground)
558 chtype attrs = dlg_get_attrs(win);
560 short fg, bg, background;
562 if ((pair = PAIR_NUMBER(attrs)) != 0
563 && pair_content((short) pair, &fg, &bg) != ERR) {
566 background = COLOR_BLACK;
568 return dlg_color_pair(foreground, background);
573 * End using dialog functions.
578 if (dialog_state.screen_initialized) {
579 dialog_state.screen_initialized = FALSE;
582 (void) fflush(stdout);
587 #define isOurEscape(p) (((p)[0] == '\\') && ((p)[1] == 'Z') && ((p)[2] != 0))
590 dlg_count_real_columns(const char *text)
594 result = dlg_count_columns(text);
595 if (result && dialog_vars.colors) {
598 if (dialog_vars.colors && isOurEscape(text)) {
599 hidden += ESCAPE_LEN;
612 centered(int width, const char *string)
614 int need = dlg_count_real_columns(string);
617 left = (width - need) / 2 - 1;
623 #ifdef USE_WIDE_CURSES
625 is_combining(const char *txt, int *combined)
629 if (*combined == 0) {
630 if (UCH(*txt) >= 128) {
633 size_t given = strlen(txt);
636 memset(&state, 0, sizeof(state));
637 len = mbrtowc(&wch, txt, given, &state);
638 if ((int) len > 0 && wcwidth(wch) == 0) {
639 *combined = (int) len - 1;
652 * Print the name (tag) or text from a DIALOG_LISTITEM, highlighting the
653 * first character if selected.
656 dlg_print_listitem(WINDOW *win,
662 chtype attr = A_NORMAL;
671 const int *indx = dlg_index_wchars(text);
672 attrs[3] = tag_key_selected_attr;
673 attrs[2] = tag_key_attr;
674 attrs[1] = tag_selected_attr;
677 (void) wattrset(win, selected ? attrs[3] : attrs[2]);
678 (void) waddnstr(win, text, indx[1]);
680 if ((int) strlen(text) > indx[1]) {
681 limit = dlg_limit_columns(text, climit, 1);
683 (void) wattrset(win, selected ? attrs[1] : attrs[0]);
686 indx[limit] - indx[1]);
690 attrs[1] = item_selected_attr;
691 attrs[0] = item_attr;
693 cols = dlg_index_columns(text);
694 limit = dlg_limit_columns(text, climit, 0);
697 (void) wattrset(win, selected ? attrs[1] : attrs[0]);
698 dlg_print_text(win, text, cols[limit], &attr);
704 * Print up to 'cols' columns from 'text', optionally rendering our escape
705 * sequence for attributes and color.
708 dlg_print_text(WINDOW *win, const char *txt, int cols, chtype *attr)
710 int y_origin, x_origin;
711 int y_before, x_before = 0;
712 int y_after, x_after;
717 #ifdef USE_WIDE_CURSES
721 getyx(win, y_origin, x_origin);
722 while (cols > 0 && (*txt != '\0')) {
723 if (dialog_vars.colors) {
724 while (isOurEscape(txt)) {
728 switch (code = CharOf(*txt)) {
739 *attr |= define_color(win, code - '0');
755 *attr &= ~A_UNDERLINE;
758 *attr |= A_UNDERLINE;
767 if (ended || *txt == '\n' || *txt == '\0')
769 useattr = (*attr) & A_ATTRIBUTES;
772 * Prevent this from making text invisible when the foreground and
773 * background colors happen to be the same, and there's no bold
776 if ((useattr & A_COLOR) != 0 && (useattr & A_BOLD) == 0) {
777 short pair = (short) PAIR_NUMBER(useattr);
779 if (pair_content(pair, &fg, &bg) != ERR
782 useattr |= dlg_color_pair(fg, ((bg == COLOR_BLACK)
789 * Write the character, using curses to tell exactly how wide it
790 * is. If it is a tab, discount that, since the caller thinks
791 * tabs are nonprinting, and curses will expand tabs to one or
794 thisTab = (CharOf(*txt) == TAB);
796 getyx(win, y_before, x_before);
799 (void) waddch(win, CharOf(*txt++) | useattr);
800 getyx(win, y_after, x_after);
801 if (thisTab && (y_after == y_origin))
802 tabbed += (x_after - x_before);
803 if ((y_after != y_origin) ||
804 (x_after >= (cols + tabbed + x_origin)
805 #ifdef USE_WIDE_CURSES
806 && !is_combining(txt, &combined)
815 * Print one line of the prompt in the window within the limits of the
816 * specified right margin. The line will end on a word boundary and a pointer
817 * to the start of the next line is returned, or a NULL pointer if the end of
818 * *prompt is reached.
821 dlg_print_line(WINDOW *win,
824 int lm, int rm, int *x)
826 const char *wrap_ptr;
827 const char *test_ptr;
828 const char *hide_ptr = 0;
829 const int *cols = dlg_index_columns(prompt);
830 const int *indx = dlg_index_wchars(prompt);
835 int limit = dlg_count_wchars(prompt);
842 * Set *test_ptr to the end of the line or the right margin (rm), whichever
843 * is less, and set wrap_ptr to the end of the last word in the line.
845 for (n = 0; n < limit; ++n) {
846 test_ptr = prompt + indx[test_inx];
847 if (*test_ptr == '\n' || *test_ptr == '\0' || cur_x >= (rm + hidden))
849 if (*test_ptr == TAB && n == 0) {
850 tabbed = 8; /* workaround for leading tabs */
851 } else if (*test_ptr == ' ' && n != 0 && prompt[indx[n - 1]] != ' ') {
854 } else if (dialog_vars.colors && isOurEscape(test_ptr)) {
856 hidden += ESCAPE_LEN;
857 n += (ESCAPE_LEN - 1);
859 cur_x = lm + tabbed + cols[n + 1];
860 if (cur_x > (rm + hidden))
866 * If the line doesn't reach the right margin in the middle of a word, then
867 * we don't have to wrap it at the end of the previous word.
869 test_ptr = prompt + indx[test_inx];
870 if (*test_ptr == '\n' || *test_ptr == ' ' || *test_ptr == '\0') {
872 while (wrap_inx > 0 && prompt[indx[wrap_inx - 1]] == ' ') {
875 *x = lm + indx[wrap_inx];
876 } else if (*x == 1 && cur_x >= rm) {
878 * If the line has no spaces, then wrap it anyway at the right margin
883 wrap_ptr = prompt + indx[wrap_inx];
884 #ifdef USE_WIDE_CURSES
885 if (UCH(*wrap_ptr) >= 128) {
887 while (is_combining(wrap_ptr, &combined)) {
894 * If we found hidden text past the last point that we will display,
895 * discount that from the displayed length.
897 if ((hide_ptr != 0) && (hide_ptr >= wrap_ptr)) {
898 hidden -= ESCAPE_LEN;
900 while (test_ptr < wrap_ptr) {
901 if (dialog_vars.colors && isOurEscape(test_ptr)) {
902 hidden -= ESCAPE_LEN;
903 test_ptr += ESCAPE_LEN;
911 * Print the line if we have a window pointer. Otherwise this routine
912 * is just being called for sizing the window.
915 dlg_print_text(win, prompt, (cols[wrap_inx] - hidden), attr);
918 /* *x tells the calling function how long the line was */
924 /* Find the start of the next line and return a pointer to it */
926 while (*test_ptr == ' ')
928 if (*test_ptr == '\n')
930 dlg_finish_string(prompt);
935 justify_text(WINDOW *win,
939 int *high, int *wide)
941 chtype attr = A_NORMAL;
942 int x = (2 * MARGIN);
945 int lm = (2 * MARGIN); /* left margin (box-border plus a space) */
946 int rm = limit_x; /* right margin */
947 int bm = limit_y; /* bottom margin */
948 int last_y = 0, last_x = 0;
958 getyx(win, last_y, last_x);
959 while (y <= bm && *prompt) {
962 if (*prompt == '\n') {
963 while (*prompt == '\n' && y < bm) {
964 if (*(prompt + 1) != '\0') {
967 (void) wmove(win, y, lm);
972 (void) wmove(win, y, lm);
975 prompt = dlg_print_line(win, &attr, prompt, lm, rm, &x);
977 getyx(win, last_y, last_x);
982 (void) wmove(win, y, lm);
984 max_x = MAX(max_x, x);
986 /* Move back to the last position after drawing prompt, for msgbox. */
988 (void) wmove(win, last_y, last_x);
990 /* Set the final height and width for the calling function */
998 * Print a string of text in a window, automatically wrap around to the next
999 * line if the string is too long to fit on one line. Note that the string may
1000 * contain embedded newlines.
1003 dlg_print_autowrap(WINDOW *win, const char *prompt, int height, int width)
1005 justify_text(win, prompt,
1008 (int *) 0, (int *) 0);
1012 * Display the message in a scrollable window. Actually the way it works is
1013 * that we create a "tall" window of the proper width, let the text wrap within
1014 * that, and copy a slice of the result to the dialog.
1016 * It works for ncurses. Other curses implementations show only blanks (Tru64)
1017 * or garbage (NetBSD).
1020 dlg_print_scrolled(WINDOW *win,
1030 (void) pauseopt; /* used only for ncurses */
1032 getyx(win, oldy, oldx);
1033 #ifdef NCURSES_VERSION
1035 int wide = width - (2 * MARGIN);
1043 #if defined(NCURSES_VERSION_PATCH) && NCURSES_VERSION_PATCH >= 20040417
1045 * If we're not limited by the screensize, allow text to possibly be
1046 * one character per line.
1048 if ((len = dlg_count_columns(prompt)) > high)
1051 dummy = newwin(high, width, 0, 0);
1053 (void) wattrset(win, dialog_attr);
1054 dlg_print_autowrap(win, prompt, height + 1 + (3 * MARGIN), width);
1057 wbkgdset(dummy, dialog_attr | ' ');
1058 (void) wattrset(dummy, dialog_attr);
1060 dlg_print_autowrap(dummy, prompt, high, width);
1064 copywin(dummy, /* srcwin */
1066 offset + MARGIN, /* sminrow */
1067 MARGIN, /* smincol */
1068 MARGIN, /* dminrow */
1069 MARGIN, /* dmincol */
1070 height, /* dmaxrow */
1076 /* if the text is incomplete, or we have scrolled, show the percentage */
1077 if (y > 0 && wide > 4) {
1078 percent = (int) ((height + offset) * 100.0 / y);
1083 if (offset != 0 || percent != 100) {
1084 (void) wattrset(win, position_indicator_attr);
1085 (void) wmove(win, MARGIN + height, wide - 4);
1086 (void) sprintf(buffer, "%d%%", percent);
1087 (void) waddstr(win, buffer);
1088 if ((len = (int) strlen(buffer)) < 4) {
1089 (void) wattrset(win, border_attr);
1090 whline(win, dlg_boxchar(ACS_HLINE), 4 - len);
1094 last = (y - height);
1100 (void) wattrset(win, dialog_attr);
1101 dlg_print_autowrap(win, prompt, height + 1 + (3 * MARGIN), width);
1104 wmove(win, oldy, oldx);
1109 dlg_check_scrolled(int key, int last, int page, bool * show, int *offset)
1116 case DLGK_PAGE_FIRST:
1122 case DLGK_PAGE_LAST:
1123 if (*offset < last) {
1134 case DLGK_GRID_DOWN:
1135 if (*offset < last) {
1140 case DLGK_PAGE_PREV:
1148 case DLGK_PAGE_NEXT:
1149 if (*offset < last) {
1164 * Calculate the window size for preformatted text. This will calculate box
1165 * dimensions that are at or close to the specified aspect ratio for the prompt
1166 * string with all spaces and newlines preserved and additional newlines added
1170 auto_size_preformatted(const char *prompt, int *height, int *width)
1172 int high = 0, wide = 0;
1173 float car; /* Calculated Aspect Ratio */
1175 int max_y = SLINES - 1;
1176 int max_x = SCOLS - 2;
1177 int max_width = max_x;
1178 int ar = dialog_state.aspect_ratio;
1180 /* Get the initial dimensions */
1181 justify_text((WINDOW *) 0, prompt, max_y, max_x, &high, &wide);
1182 car = (float) (wide / high);
1185 * If the aspect ratio is greater than it should be, then decrease the
1186 * width proportionately.
1189 diff = car / (float) ar;
1190 max_x = (int) ((float) wide / diff + 4);
1191 justify_text((WINDOW *) 0, prompt, max_y, max_x, &high, &wide);
1192 car = (float) wide / (float) high;
1196 * If the aspect ratio is too small after decreasing the width, then
1197 * incrementally increase the width until the aspect ratio is equal to or
1198 * greater than the specified aspect ratio.
1200 while (car < ar && max_x < max_width) {
1202 justify_text((WINDOW *) 0, prompt, max_y, max_x, &high, &wide);
1203 car = (float) (wide / high);
1211 * Find the length of the longest "word" in the given string. By setting the
1212 * widget width at least this long, we can avoid splitting a word on the
1216 longest_word(const char *string)
1218 int length, result = 0;
1220 while (*string != '\0') {
1222 while (*string != '\0' && !isspace(UCH(*string))) {
1226 result = MAX(result, length);
1227 if (*string != '\0')
1234 * if (height or width == -1) Maximize()
1235 * if (height or width == 0), justify and return actual limits.
1238 real_auto_size(const char *title,
1240 int *height, int *width,
1241 int boxlines, int mincols)
1243 int x = (dialog_vars.begin_set ? dialog_vars.begin_x : 2);
1244 int y = (dialog_vars.begin_set ? dialog_vars.begin_y : 1);
1245 int title_length = title ? dlg_count_columns(title) : 0;
1249 int save_high = *height;
1250 int save_wide = *width;
1267 wide = MAX(title_length, mincols);
1268 if (strchr(prompt, '\n') == 0) {
1269 double val = (dialog_state.aspect_ratio *
1270 dlg_count_real_columns(prompt));
1271 double xxx = sqrt(val);
1272 int tmp = (int) xxx;
1273 wide = MAX(wide, tmp);
1274 wide = MAX(wide, longest_word(prompt));
1275 justify_text((WINDOW *) 0, prompt, high, wide, height, width);
1277 auto_size_preformatted(prompt, height, width);
1281 justify_text((WINDOW *) 0, prompt, high, wide, height, width);
1285 if (*width < title_length) {
1286 justify_text((WINDOW *) 0, prompt, high, title_length, height, width);
1287 *width = title_length;
1290 if (*width < mincols && save_wide == 0)
1294 *height += boxlines + 2;
1297 *height = save_high;
1302 /* End of real_auto_size() */
1305 dlg_auto_size(const char *title,
1312 real_auto_size(title, prompt, height, width, boxlines, mincols);
1314 if (*width > SCOLS) {
1319 if (*height > SLINES)
1324 * if (height or width == -1) Maximize()
1325 * if (height or width == 0)
1326 * height=MIN(SLINES, num.lines in fd+n);
1327 * width=MIN(SCOLS, MAX(longer line+n, mincols));
1330 dlg_auto_sizefile(const char *title,
1338 int len = title ? dlg_count_columns(title) : 0;
1345 /* Open input file for reading */
1346 if ((fd = fopen(file, "rb")) == NULL)
1347 dlg_exiterr("dlg_auto_sizefile: Cannot open input file %s", file);
1349 if ((*height == -1) || (*width == -1)) {
1350 *height = SLINES - (dialog_vars.begin_set ? dialog_vars.begin_y : 0);
1351 *width = SCOLS - (dialog_vars.begin_set ? dialog_vars.begin_x : 0);
1353 if ((*height != 0) && (*width != 0)) {
1357 if (*height > SLINES)
1364 while (((ch = getc(fd)) != '\n') && !feof(fd))
1365 if ((ch == TAB) && (dialog_vars.tab_correct))
1366 offset += dialog_state.tab_len - (offset % dialog_state.tab_len);
1376 /* now 'count' has the number of lines of fd and 'len' the max length */
1378 *height = MIN(SLINES, count + numlines + boxlines);
1379 *width = MIN(SCOLS, MAX((len + nc), mincols));
1380 /* here width and height can be maximized if > SCOLS|SLINES because
1381 textbox-like widgets don't put all <file> on the screen.
1382 Msgbox-like widget instead have to put all <text> correctly. */
1388 dlg_get_cell_attrs(WINDOW *win)
1391 #ifdef USE_WIDE_CURSES
1396 if (win_wch(win, &wch) == OK
1397 && getcchar(&wch, &cc, &attrs, &pair, NULL) == OK) {
1403 result = winch(win) & (A_ATTRIBUTES & ~A_COLOR);
1409 * Draw a rectangular box with line drawing characters.
1411 * borderchar is used to color the upper/left edges.
1413 * boxchar is used to color the right/lower edges. It also is fill-color used
1414 * for the box contents.
1416 * Normally, if you are drawing a scrollable box, use menubox_border_attr for
1417 * boxchar, and menubox_attr for borderchar since the scroll-arrows are drawn
1418 * with menubox_attr at the top, and menubox_border_attr at the bottom. That
1419 * also (given the default color choices) produces a recessed effect.
1421 * If you want a raised effect (and are not going to use the scroll-arrows),
1422 * reverse this choice.
1425 dlg_draw_box2(WINDOW *win, int y, int x, int height, int width,
1426 chtype boxchar, chtype borderchar, chtype borderchar2)
1429 chtype save = dlg_get_attrs(win);
1431 (void) wattrset(win, 0);
1432 for (i = 0; i < height; i++) {
1433 (void) wmove(win, y + i, x);
1434 for (j = 0; j < width; j++)
1436 (void) waddch(win, borderchar | dlg_boxchar(ACS_ULCORNER));
1437 else if (i == height - 1 && !j)
1438 (void) waddch(win, borderchar | dlg_boxchar(ACS_LLCORNER));
1439 else if (!i && j == width - 1)
1440 (void) waddch(win, borderchar2 | dlg_boxchar(ACS_URCORNER));
1441 else if (i == height - 1 && j == width - 1)
1442 (void) waddch(win, borderchar2 | dlg_boxchar(ACS_LRCORNER));
1444 (void) waddch(win, borderchar | dlg_boxchar(ACS_HLINE));
1445 else if (i == height - 1)
1446 (void) waddch(win, borderchar2 | dlg_boxchar(ACS_HLINE));
1448 (void) waddch(win, borderchar | dlg_boxchar(ACS_VLINE));
1449 else if (j == width - 1)
1450 (void) waddch(win, borderchar2 | dlg_boxchar(ACS_VLINE));
1452 (void) waddch(win, boxchar | ' ');
1454 (void) wattrset(win, save);
1458 dlg_draw_box(WINDOW *win, int y, int x, int height, int width,
1459 chtype boxchar, chtype borderchar)
1461 dlg_draw_box2(win, y, x, height, width, boxchar, borderchar, boxchar);
1464 static DIALOG_WINDOWS *
1465 find_window(WINDOW *win)
1467 DIALOG_WINDOWS *result = 0;
1470 for (p = dialog_state.all_windows; p != 0; p = p->next) {
1471 if (p->normal == win) {
1481 * If we have wchgat(), use that for updating shadow attributes, to work with
1482 * wide-character data.
1486 * Check if the given point is "in" the given window. If so, return the window
1487 * pointer, otherwise null.
1490 in_window(WINDOW *win, int y, int x)
1493 int y_base = getbegy(win);
1494 int x_base = getbegx(win);
1495 int y_last = getmaxy(win) + y_base;
1496 int x_last = getmaxx(win) + x_base;
1498 if (y >= y_base && y <= y_last && x >= x_base && x <= x_last)
1504 window_at_cell(DIALOG_WINDOWS * dw, int y, int x)
1508 int y_want = y + getbegy(dw->shadow);
1509 int x_want = x + getbegx(dw->shadow);
1511 for (p = dialog_state.all_windows; p != 0; p = p->next) {
1512 if (dw->normal != p->normal
1513 && dw->shadow != p->normal
1514 && (result = in_window(p->normal, y_want, x_want)) != 0) {
1525 in_shadow(WINDOW *normal, WINDOW *shadow, int y, int x)
1527 bool result = FALSE;
1528 int ybase = getbegy(normal);
1529 int ylast = getmaxy(normal) + ybase;
1530 int xbase = getbegx(normal);
1531 int xlast = getmaxx(normal) + xbase;
1533 y += getbegy(shadow);
1534 x += getbegx(shadow);
1536 if (y >= ybase + SHADOW_ROWS
1537 && y < ylast + SHADOW_ROWS
1539 && x < xlast + SHADOW_COLS) {
1540 /* in the right-side */
1542 } else if (y >= ylast
1543 && y < ylast + SHADOW_ROWS
1544 && x >= ybase + SHADOW_COLS
1545 && x < ylast + SHADOW_COLS) {
1546 /* check the bottom */
1554 * When erasing a shadow, check each cell to make sure that it is not part of
1555 * another box's shadow. This is a little complicated since most shadows are
1556 * merged onto stdscr.
1559 last_shadow(DIALOG_WINDOWS * dw, int y, int x)
1564 for (p = dialog_state.all_windows; p != 0; p = p->next) {
1565 if (p->normal != dw->normal
1566 && in_shadow(p->normal, dw->shadow, y, x)) {
1575 repaint_cell(DIALOG_WINDOWS * dw, bool draw, int y, int x)
1577 WINDOW *win = dw->shadow;
1581 if ((cellwin = window_at_cell(dw, y, x)) != 0
1582 && (draw || last_shadow(dw, y, x))
1583 && (y2 = (y + getbegy(win) - getbegy(cellwin))) >= 0
1584 && (x2 = (x + getbegx(win) - getbegx(cellwin))) >= 0
1585 && wmove(cellwin, y2, x2) != ERR) {
1586 chtype the_cell = dlg_get_attrs(cellwin);
1587 chtype the_attr = (draw ? shadow_attr : the_cell);
1589 if (dlg_get_cell_attrs(cellwin) & A_ALTCHARSET) {
1590 the_attr |= A_ALTCHARSET;
1594 the_attr & (chtype) (~A_COLOR),
1595 (short) PAIR_NUMBER(the_attr),
1599 chtype the_char = ((winch(cellwin) & A_CHARTEXT) | the_attr);
1600 (void) waddch(cellwin, the_char);
1603 wnoutrefresh(cellwin);
1607 #define RepaintCell(dw, draw, y, x) repaint_cell(dw, draw, y, x)
1610 repaint_shadow(DIALOG_WINDOWS * dw, bool draw, int y, int x, int height, int width)
1614 if (UseShadow(dw)) {
1616 chtype save = dlg_get_attrs(dw->shadow);
1617 (void) wattrset(dw->shadow, draw ? shadow_attr : screen_attr);
1619 for (i = 0; i < SHADOW_ROWS; ++i) {
1620 for (j = 0; j < width; ++j) {
1621 RepaintCell(dw, draw, i + y + height, j + x + SHADOW_COLS);
1624 for (i = 0; i < height; i++) {
1625 for (j = 0; j < SHADOW_COLS; ++j) {
1626 RepaintCell(dw, draw, i + y + SHADOW_ROWS, j + x + width);
1629 (void) wnoutrefresh(dw->shadow);
1631 (void) wattrset(dw->shadow, save);
1637 * Draw a shadow on the parent window corresponding to the right- and
1638 * bottom-edge of the child window, to give a 3-dimensional look.
1641 draw_childs_shadow(DIALOG_WINDOWS * dw)
1643 if (UseShadow(dw)) {
1646 getbegy(dw->normal) - getbegy(dw->shadow),
1647 getbegx(dw->normal) - getbegx(dw->shadow),
1648 getmaxy(dw->normal),
1649 getmaxx(dw->normal));
1654 * Erase a shadow on the parent window corresponding to the right- and
1655 * bottom-edge of the child window.
1658 erase_childs_shadow(DIALOG_WINDOWS * dw)
1660 if (UseShadow(dw)) {
1663 getbegy(dw->normal) - getbegy(dw->shadow),
1664 getbegx(dw->normal) - getbegx(dw->shadow),
1665 getmaxy(dw->normal),
1666 getmaxx(dw->normal));
1671 * Draw shadows along the right and bottom edge to give a more 3D look
1675 dlg_draw_shadow(WINDOW *win, int y, int x, int height, int width)
1677 repaint_shadow(find_window(win), TRUE, y, x, height, width);
1679 #endif /* HAVE_COLOR */
1682 * Allow shell scripts to remap the exit codes so they can distinguish ESC
1689 static const struct {
1693 { DLG_EXIT_CANCEL, "DIALOG_CANCEL" },
1694 { DLG_EXIT_ERROR, "DIALOG_ERROR" },
1695 { DLG_EXIT_ESC, "DIALOG_ESC" },
1696 { DLG_EXIT_EXTRA, "DIALOG_EXTRA" },
1697 { DLG_EXIT_HELP, "DIALOG_HELP" },
1698 { DLG_EXIT_OK, "DIALOG_OK" },
1699 { DLG_EXIT_ITEM_HELP, "DIALOG_ITEM_HELP" },
1707 bool overridden = FALSE;
1710 for (n = 0; n < sizeof(table) / sizeof(table[0]); n++) {
1711 if (table[n].code == code) {
1712 if ((name = getenv(table[n].name)) != 0) {
1713 value = strtol(name, &temp, 0);
1714 if (temp != 0 && temp != name && *temp == '\0') {
1724 * Prior to 2004/12/19, a widget using --item-help would exit with "OK"
1725 * if the help button were selected. Now we want to exit with "HELP",
1726 * but allow the environment variable to override.
1728 if (code == DLG_EXIT_ITEM_HELP && !overridden) {
1729 code = DLG_EXIT_HELP;
1732 #ifdef HAVE_DLG_TRACE
1733 dlg_trace((const char *) 0); /* close it */
1737 _dlg_inputstr_leaks();
1738 #if defined(NCURSES_VERSION) && defined(HAVE__NC_FREE_AND_EXIT)
1739 _nc_free_and_exit(code);
1743 if (dialog_state.input == stdin) {
1747 * Just in case of using --input-fd option, do not
1748 * call atexit functions of ncurses which may hang.
1750 if (dialog_state.input) {
1751 fclose(dialog_state.input);
1752 dialog_state.input = 0;
1754 if (dialog_state.pipe_input) {
1755 if (dialog_state.pipe_input != stdin) {
1756 fclose(dialog_state.pipe_input);
1757 dialog_state.pipe_input = 0;
1764 /* quit program killing all tailbg */
1766 dlg_exiterr(const char *fmt,...)
1773 (void) fputc('\n', stderr);
1775 (void) vfprintf(stderr, fmt, ap);
1777 (void) fputc('\n', stderr);
1779 dlg_killall_bg(&retval);
1781 (void) fflush(stderr);
1782 (void) fflush(stdout);
1783 dlg_exit(DLG_EXIT_ERROR);
1789 if (dialog_vars.beep_signal) {
1791 dialog_vars.beep_signal = 0;
1796 dlg_print_size(int height, int width)
1798 if (dialog_vars.print_siz)
1799 fprintf(dialog_state.output, "Size: %d, %d\n", height, width);
1803 dlg_ctl_size(int height, int width)
1805 if (dialog_vars.size_err) {
1806 if ((width > COLS) || (height > LINES)) {
1807 dlg_exiterr("Window too big. (height, width) = (%d, %d). Max allowed (%d, %d).",
1808 height, width, LINES, COLS);
1811 else if ((dialog_state.use_shadow)
1812 && ((width > SCOLS || height > SLINES))) {
1813 if ((width <= COLS) && (height <= LINES)) {
1814 /* try again, without shadows */
1815 dialog_state.use_shadow = 0;
1817 dlg_exiterr("Window+Shadow too big. (height, width) = (%d, %d). Max allowed (%d, %d).",
1818 height, width, SLINES, SCOLS);
1826 * If the --tab-correct was not selected, convert tabs to single spaces.
1829 dlg_tab_correct_str(char *prompt)
1833 if (dialog_vars.tab_correct) {
1834 while ((ptr = strchr(prompt, TAB)) != NULL) {
1842 dlg_calc_listh(int *height, int *list_height, int item_no)
1844 /* calculate new height and list_height */
1845 int rows = SLINES - (dialog_vars.begin_set ? dialog_vars.begin_y : 0);
1846 if (rows - (*height) > 0) {
1847 if (rows - (*height) > item_no)
1848 *list_height = item_no;
1850 *list_height = rows - (*height);
1852 (*height) += (*list_height);
1857 dlg_calc_listw(int item_no, char **items, int group)
1859 int n, i, len1 = 0, len2 = 0;
1860 for (i = 0; i < (item_no * group); i += group) {
1861 if ((n = dlg_count_columns(items[i])) > len1)
1863 if ((n = dlg_count_columns(items[i + 1])) > len2)
1870 dlg_calc_list_width(int item_no, DIALOG_LISTITEM * items)
1872 int n, i, len1 = 0, len2 = 0;
1873 int bits = ((dialog_vars.no_tags ? 1 : 0)
1874 + (dialog_vars.no_items ? 2 : 0));
1876 for (i = 0; i < item_no; ++i) {
1881 if ((n = dlg_count_columns(items[i].name)) > len1)
1883 if ((n = dlg_count_columns(items[i].text)) > len2)
1889 if ((n = dlg_count_columns(items[i].name)) > len1)
1900 static char empty[] = "";
1905 dlg_strclone(const char *cprompt)
1909 prompt = dlg_malloc(char, strlen(cprompt) + 1);
1910 assert_ptr(prompt, "dlg_strclone");
1911 strcpy(prompt, cprompt);
1917 dlg_asciibox(chtype ch)
1921 if (ch == ACS_ULCORNER)
1923 else if (ch == ACS_LLCORNER)
1925 else if (ch == ACS_URCORNER)
1927 else if (ch == ACS_LRCORNER)
1929 else if (ch == ACS_HLINE)
1931 else if (ch == ACS_VLINE)
1933 else if (ch == ACS_LTEE)
1935 else if (ch == ACS_RTEE)
1937 else if (ch == ACS_UARROW)
1939 else if (ch == ACS_DARROW)
1946 dlg_boxchar(chtype ch)
1948 chtype result = dlg_asciibox(ch);
1951 if (dialog_vars.ascii_lines)
1953 else if (dialog_vars.no_lines)
1960 dlg_box_x_ordinate(int width)
1964 if (dialog_vars.begin_set == 1) {
1965 x = dialog_vars.begin_x;
1967 /* center dialog box on screen unless --begin-set */
1968 x = (SCOLS - width) / 2;
1974 dlg_box_y_ordinate(int height)
1978 if (dialog_vars.begin_set == 1) {
1979 y = dialog_vars.begin_y;
1981 /* center dialog box on screen unless --begin-set */
1982 y = (SLINES - height) / 2;
1988 dlg_draw_title(WINDOW *win, const char *title)
1990 if (title != NULL) {
1991 chtype attr = A_NORMAL;
1992 chtype save = dlg_get_attrs(win);
1993 int x = centered(getmaxx(win), title);
1995 (void) wattrset(win, title_attr);
1997 dlg_print_text(win, title, getmaxx(win) - x, &attr);
1998 (void) wattrset(win, save);
1999 dlg_finish_string(title);
2004 dlg_draw_bottom_box2(WINDOW *win, chtype on_left, chtype on_right, chtype on_inside)
2006 int width = getmaxx(win);
2007 int height = getmaxy(win);
2010 (void) wattrset(win, on_left);
2011 (void) wmove(win, height - 3, 0);
2012 (void) waddch(win, dlg_boxchar(ACS_LTEE));
2013 for (i = 0; i < width - 2; i++)
2014 (void) waddch(win, dlg_boxchar(ACS_HLINE));
2015 (void) wattrset(win, on_right);
2016 (void) waddch(win, dlg_boxchar(ACS_RTEE));
2017 (void) wattrset(win, on_inside);
2018 (void) wmove(win, height - 2, 1);
2019 for (i = 0; i < width - 2; i++)
2020 (void) waddch(win, ' ');
2024 dlg_draw_bottom_box(WINDOW *win)
2026 dlg_draw_bottom_box2(win, border_attr, dialog_attr, dialog_attr);
2030 * Remove a window, repainting everything else. This would be simpler if we
2031 * used the panel library, but that is not _always_ available.
2034 dlg_del_window(WINDOW *win)
2036 DIALOG_WINDOWS *p, *q, *r;
2039 * If --keep-window was set, do not delete/repaint the windows.
2041 if (dialog_vars.keep_window)
2044 /* Leave the main window untouched if there are no background windows.
2045 * We do this so the current window will not be cleared on exit, allowing
2046 * things like the infobox demo to run without flicker.
2048 if (dialog_state.getc_callbacks != 0) {
2050 wnoutrefresh(stdscr);
2053 for (p = dialog_state.all_windows, q = r = 0; p != 0; r = p, p = p->next) {
2054 if (p->normal == win) {
2055 q = p; /* found a match - should be only one */
2057 dialog_state.all_windows = p->next;
2062 if (p->shadow != 0) {
2063 touchwin(p->shadow);
2064 wnoutrefresh(p->shadow);
2066 touchwin(p->normal);
2067 wnoutrefresh(p->normal);
2072 if (dialog_state.all_windows != 0)
2073 erase_childs_shadow(q);
2074 del_subwindows(q->normal);
2075 dlg_unregister_window(q->normal);
2083 * Create a window, optionally with a shadow.
2086 dlg_new_window(int height, int width, int y, int x)
2088 return dlg_new_modal_window(stdscr, height, width, y, x);
2092 * "Modal" windows differ from normal ones by having a shadow in a window
2093 * separate from the standard screen.
2096 dlg_new_modal_window(WINDOW *parent, int height, int width, int y, int x)
2099 DIALOG_WINDOWS *p = dlg_calloc(DIALOG_WINDOWS, 1);
2103 || (win = newwin(height, width, y, x)) == 0) {
2104 dlg_exiterr("Can't make new window at (%d,%d), size (%d,%d).\n",
2105 y, x, height, width);
2107 p->next = dialog_state.all_windows;
2109 dialog_state.all_windows = p;
2111 if (dialog_state.use_shadow) {
2113 draw_childs_shadow(p);
2117 (void) keypad(win, TRUE);
2122 * Move/Resize a window, optionally with a shadow.
2126 dlg_move_window(WINDOW *win, int height, int width, int y, int x)
2131 dlg_ctl_size(height, width);
2133 if ((p = find_window(win)) != 0) {
2134 (void) wresize(win, height, width);
2135 (void) mvwin(win, y, x);
2137 if (p->shadow != 0) {
2138 if (dialog_state.use_shadow) {
2139 (void) mvwin(p->shadow, y + SHADOW_ROWS, x + SHADOW_COLS);
2148 draw_childs_shadow(p);
2153 #endif /* KEY_RESIZE */
2156 dlg_sub_window(WINDOW *parent, int height, int width, int y, int x)
2160 if ((win = subwin(parent, height, width, y, x)) == 0) {
2161 dlg_exiterr("Can't make sub-window at (%d,%d), size (%d,%d).\n",
2162 y, x, height, width);
2165 add_subwindow(parent, win);
2166 (void) keypad(win, TRUE);
2172 dlg_default_item(char **items, int llen)
2176 if (dialog_vars.default_item != 0) {
2178 while (*items != 0) {
2179 if (!strcmp(dialog_vars.default_item, *items)) {
2191 dlg_default_listitem(DIALOG_LISTITEM * items)
2195 if (dialog_vars.default_item != 0) {
2197 while (items->name != 0) {
2198 if (!strcmp(dialog_vars.default_item, items->name)) {
2210 * Draw the string for item_help
2213 dlg_item_help(const char *txt)
2215 if (USE_ITEM_HELP(txt)) {
2216 chtype attr = A_NORMAL;
2219 (void) wattrset(stdscr, itemhelp_attr);
2220 (void) wmove(stdscr, LINES - 1, 0);
2221 (void) wclrtoeol(stdscr);
2223 dlg_print_text(stdscr, txt, COLS - 1, &attr);
2224 if (itemhelp_attr & A_COLOR) {
2225 /* fill the remainder of the line with the window's attributes */
2226 getyx(stdscr, y, x);
2233 (void) wnoutrefresh(stdscr);
2237 #ifndef HAVE_STRCASECMP
2239 dlg_strcmp(const char *a, const char *b)
2246 if (isalpha(ac) && islower(ac))
2248 if (isalpha(bc) && islower(bc))
2251 if (ac == 0 || bc == 0 || cmp != 0)
2259 * Returns true if 'dst' points to a blank which follows another blank which
2260 * is not a leading blank on a line.
2263 trim_blank(char *base, char *dst)
2267 while (dst-- != base) {
2270 } else if (*dst != ' ') {
2280 * Change embedded "\n" substrings to '\n' characters and tabs to single
2281 * spaces. If there are no "\n"s, it will strip all extra spaces, for
2282 * justification. If it has "\n"'s, it will preserve extra spaces. If cr_wrap
2283 * is set, it will preserve '\n's.
2286 dlg_trim_string(char *s)
2291 int has_newlines = !dialog_vars.no_nl_expand && (strstr(s, "\\n") != 0);
2293 while (*p != '\0') {
2294 if (*p == TAB && !dialog_vars.nocollapse)
2297 if (has_newlines) { /* If prompt contains "\n" strings */
2298 if (*p == '\\' && *(p + 1) == 'n') {
2303 * Handle end of lines intelligently. If '\n' follows "\n"
2304 * then ignore the '\n'. This eliminates the need to escape
2305 * the '\n' character (no need to use "\n\").
2311 } else if (*p == '\n') {
2312 if (dialog_vars.cr_wrap)
2315 /* Replace the '\n' with a space if cr_wrap is not set */
2316 if (!trim_blank(base, s))
2320 } else /* If *p != '\n' */
2322 } else if (dialog_vars.trim_whitespace) {
2324 if (*(s - 1) != ' ') {
2329 } else if (*p == '\n') {
2330 if (dialog_vars.cr_wrap)
2332 else if (*(s - 1) != ' ') {
2333 /* Strip '\n's if cr_wrap is not set. */
2340 } else { /* If there are no "\n" strings */
2341 if (*p == ' ' && !dialog_vars.nocollapse) {
2342 if (!trim_blank(base, s))
2354 dlg_set_focus(WINDOW *parent, WINDOW *win)
2357 (void) wmove(parent,
2358 getpary(win) + getcury(win),
2359 getparx(win) + getcurx(win));
2360 (void) wnoutrefresh(win);
2366 * Returns the nominal maximum buffer size.
2369 dlg_max_input(int max_len)
2371 if (dialog_vars.max_input != 0 && dialog_vars.max_input < MAX_LEN)
2372 max_len = dialog_vars.max_input;
2378 * Free storage used for the result buffer.
2381 dlg_clr_result(void)
2383 if (dialog_vars.input_length) {
2384 dialog_vars.input_length = 0;
2385 if (dialog_vars.input_result)
2386 free(dialog_vars.input_result);
2388 dialog_vars.input_result = 0;
2392 * Setup a fixed-buffer for the result.
2395 dlg_set_result(const char *string)
2397 unsigned need = string ? (unsigned) strlen(string) + 1 : 0;
2399 /* inputstr.c needs a fixed buffer */
2404 * If the buffer is not big enough, allocate a new one.
2406 if (dialog_vars.input_length != 0
2407 || dialog_vars.input_result == 0
2408 || need > MAX_LEN) {
2412 dialog_vars.input_length = need;
2413 dialog_vars.input_result = dlg_malloc(char, need);
2414 assert_ptr(dialog_vars.input_result, "dlg_set_result");
2417 strcpy(dialog_vars.input_result, string ? string : "");
2419 return dialog_vars.input_result;
2423 * Accumulate results in dynamically allocated buffer.
2424 * If input_length is zero, it is a MAX_LEN buffer belonging to the caller.
2427 dlg_add_result(const char *string)
2429 unsigned have = (dialog_vars.input_result
2430 ? (unsigned) strlen(dialog_vars.input_result)
2432 unsigned want = (unsigned) strlen(string) + 1 + have;
2434 if ((want >= MAX_LEN)
2435 || (dialog_vars.input_length != 0)
2436 || (dialog_vars.input_result == 0)) {
2438 if (dialog_vars.input_length == 0
2439 || dialog_vars.input_result == 0) {
2441 char *save_result = dialog_vars.input_result;
2443 dialog_vars.input_length = want * 2;
2444 dialog_vars.input_result = dlg_malloc(char, dialog_vars.input_length);
2445 assert_ptr(dialog_vars.input_result, "dlg_add_result malloc");
2446 dialog_vars.input_result[0] = '\0';
2447 if (save_result != 0)
2448 strcpy(dialog_vars.input_result, save_result);
2449 } else if (want >= dialog_vars.input_length) {
2450 dialog_vars.input_length = want * 2;
2451 dialog_vars.input_result = dlg_realloc(char,
2452 dialog_vars.input_length,
2453 dialog_vars.input_result);
2454 assert_ptr(dialog_vars.input_result, "dlg_add_result realloc");
2457 strcat(dialog_vars.input_result, string);
2461 * These are characters that (aside from the quote-delimiter) will have to
2462 * be escaped in a single- or double-quoted string.
2464 #define FIX_SINGLE "\n\\"
2465 #define FIX_DOUBLE FIX_SINGLE "[]{}?*;`~#$^&()|<>"
2468 * Returns the quote-delimiter.
2471 quote_delimiter(void)
2473 return dialog_vars.single_quoted ? "'" : "\"";
2477 * Returns true if we should quote the given string.
2480 must_quote(char *string)
2484 if (*string != '\0') {
2485 size_t len = strlen(string);
2486 if (strcspn(string, quote_delimiter()) != len)
2488 else if (strcspn(string, "\n\t ") != len)
2491 code = (strcspn(string, FIX_DOUBLE) != len);
2500 * Add a quoted string to the result buffer.
2503 dlg_add_quoted(char *string)
2506 const char *my_quote = quote_delimiter();
2507 const char *must_fix = (dialog_vars.single_quoted
2511 if (must_quote(string)) {
2513 dlg_add_result(my_quote);
2514 while (*string != '\0') {
2515 temp[0] = *string++;
2516 if ((strchr) (my_quote, *temp) || (strchr) (must_fix, *temp))
2517 dlg_add_result("\\");
2518 dlg_add_result(temp);
2520 dlg_add_result(my_quote);
2522 dlg_add_result(string);
2527 * When adding a result, make that depend on whether "--quoted" is used.
2530 dlg_add_string(char *string)
2532 if (dialog_vars.quoted) {
2533 dlg_add_quoted(string);
2535 dlg_add_result(string);
2540 dlg_need_separator(void)
2542 bool result = FALSE;
2544 if (dialog_vars.output_separator) {
2546 } else if (dialog_vars.input_result && *(dialog_vars.input_result)) {
2553 dlg_add_separator(void)
2555 const char *separator = (dialog_vars.separate_output) ? "\n" : " ";
2557 if (dialog_vars.output_separator)
2558 separator = dialog_vars.output_separator;
2560 dlg_add_result(separator);
2563 #define HELP_PREFIX "HELP "
2566 dlg_add_help_listitem(int *result, char **tag, DIALOG_LISTITEM * item)
2568 dlg_add_result(HELP_PREFIX);
2569 if (USE_ITEM_HELP(item->help)) {
2570 *tag = dialog_vars.help_tags ? item->name : item->help;
2571 *result = DLG_EXIT_ITEM_HELP;
2578 dlg_add_help_formitem(int *result, char **tag, DIALOG_FORMITEM * item)
2580 dlg_add_result(HELP_PREFIX);
2581 if (USE_ITEM_HELP(item->help)) {
2582 *tag = dialog_vars.help_tags ? item->name : item->help;
2583 *result = DLG_EXIT_ITEM_HELP;
2590 * Some widgets support only one value of a given variable - save/restore the
2591 * global dialog_vars so we can override it consistently.
2594 dlg_save_vars(DIALOG_VARS * vars)
2596 *vars = dialog_vars;
2600 * Most of the data in DIALOG_VARS is normally set by command-line options.
2601 * The input_result member is an exception; it is normally set by the dialog
2602 * library to return result values.
2605 dlg_restore_vars(DIALOG_VARS * vars)
2607 char *save_result = dialog_vars.input_result;
2608 unsigned save_length = dialog_vars.input_length;
2610 dialog_vars = *vars;
2611 dialog_vars.input_result = save_result;
2612 dialog_vars.input_length = save_length;
2616 * Called each time a widget is invoked which may do output, increment a count.
2619 dlg_does_output(void)
2621 dialog_state.output_count += 1;
2625 * Compatibility for different versions of curses.
2627 #if !(defined(HAVE_GETBEGX) && defined(HAVE_GETBEGY))
2629 dlg_getbegx(WINDOW *win)
2632 getbegyx(win, y, x);
2636 dlg_getbegy(WINDOW *win)
2639 getbegyx(win, y, x);
2644 #if !(defined(HAVE_GETCURX) && defined(HAVE_GETCURY))
2646 dlg_getcurx(WINDOW *win)
2653 dlg_getcury(WINDOW *win)
2661 #if !(defined(HAVE_GETMAXX) && defined(HAVE_GETMAXY))
2663 dlg_getmaxx(WINDOW *win)
2666 getmaxyx(win, y, x);
2670 dlg_getmaxy(WINDOW *win)
2673 getmaxyx(win, y, x);
2678 #if !(defined(HAVE_GETPARX) && defined(HAVE_GETPARY))
2680 dlg_getparx(WINDOW *win)
2683 getparyx(win, y, x);
2687 dlg_getpary(WINDOW *win)
2690 getparyx(win, y, x);
2695 #ifdef NEED_WGETPARENT
2697 dlg_wgetparent(WINDOW *win)
2703 for (p = dialog_state.all_subwindows; p != 0; p = p->next) {
2704 if (p->shadow == win) {