2 * $Id: util.c,v 1.243 2012/06/30 12:58:04 tom Exp $
4 * util.c -- miscellaneous utilities for dialog
6 * Copyright 2000-2011,2012 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 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)
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);
275 * Do some initialization for dialog.
277 * 'input' is the real tty input of dialog. Usually it is stdin, but if
278 * --input-fd option is used, it may be anything.
280 * 'output' is where dialog will send its result. Usually it is stderr, but
281 * if --stdout or --output-fd is used, it may be anything. We are concerned
282 * mainly with the case where it happens to be the same as stdout.
285 init_dialog(FILE *input, FILE *output)
290 setlocale(LC_ALL, "");
292 dialog_state.output = output;
293 dialog_state.tab_len = TAB_LEN;
294 dialog_state.aspect_ratio = DEFAULT_ASPECT_RATIO;
296 dialog_state.use_colors = USE_COLORS; /* use colors by default? */
297 dialog_state.use_shadow = USE_SHADOW; /* shadow dialog boxes by default? */
301 if (dlg_parse_rc() == -1) /* Read the configuration file */
302 dlg_exiterr("init_dialog: dlg_parse_rc");
306 * Some widgets (such as gauge) may read from the standard input. Pipes
307 * only connect stdout/stdin, so there is not much choice. But reading a
308 * pipe would get in the way of curses' normal reading stdin for getch.
310 * As in the --stdout (see below), reopening the terminal does not always
311 * work properly. dialog provides a --pipe-fd option for this purpose. We
312 * test that case first (differing fileno's for input/stdin). If the
313 * fileno's are equal, but we're not reading from a tty, see if we can open
316 dialog_state.pipe_input = stdin;
317 if (fileno(input) != fileno(stdin)) {
318 if (dup(fileno(input)) >= 0
319 && (fd2 = dup(fileno(stdin))) >= 0) {
320 (void) dup2(fileno(input), fileno(stdin));
321 dialog_state.pipe_input = fdopen(fd2, "r");
322 if (fileno(stdin) != 0) /* some functions may read fd #0 */
323 (void) dup2(fileno(stdin), 0);
325 dlg_exiterr("cannot open tty-input");
326 } else if (!isatty(fileno(stdin))) {
327 if (open_terminal(&device, O_RDONLY) >= 0
328 && (fd2 = dup(fileno(stdin))) >= 0) {
329 dialog_state.pipe_input = fdopen(fd2, "r");
330 if (freopen(device, "r", stdin) == 0)
331 dlg_exiterr("cannot open tty-input");
332 if (fileno(stdin) != 0) /* some functions may read fd #0 */
333 (void) dup2(fileno(stdin), 0);
339 * If stdout is not a tty and dialog is called with the --stdout option, we
340 * have to provide for a way to write to the screen.
342 * The curses library normally writes its output to stdout, leaving stderr
343 * free for scripting. Scripts are simpler when stdout is redirected. The
344 * newterm function is useful; it allows us to specify where the output
345 * goes. Reopening the terminal is not portable since several
346 * configurations do not allow this to work properly:
348 * a) some getty implementations (and possibly broken tty drivers, e.g., on
349 * HPUX 10 and 11) cause stdin to act as if it is still in cooked mode
350 * even though results from ioctl's state that it is successfully
351 * altered to raw mode. Broken is the proper term.
353 * b) the user may not have permissions on the device, e.g., if one su's
354 * from the login user to another non-privileged user.
356 if (!isatty(fileno(stdout))
357 && (fileno(stdout) == fileno(output) || dialog_tty())) {
358 if ((fd1 = open_terminal(&device, O_WRONLY)) >= 0
359 && (dialog_state.screen_output = fdopen(fd1, "w")) != 0) {
360 if (newterm(NULL, dialog_state.screen_output, stdin) == 0) {
361 dlg_exiterr("cannot initialize curses");
365 dlg_exiterr("cannot open tty-output");
368 dialog_state.screen_output = stdout;
371 #ifdef NCURSES_VERSION
373 * Cancel xterm's alternate-screen mode.
375 if (!dialog_vars.keep_tite
376 && (dialog_state.screen_output != stdout
377 || isatty(fileno(dialog_state.screen_output)))
378 && key_mouse != 0 /* xterm and kindred */
379 && isprivate(enter_ca_mode)
380 && isprivate(exit_ca_mode)) {
382 * initscr() or newterm() already did putp(enter_ca_mode) as a side
383 * effect of initializing the screen. It would be nice to not even
384 * do that, but we do not really have access to the correct copy of
385 * the terminfo description until those functions have been invoked.
387 (void) putp(exit_ca_mode);
388 (void) putp(clear_screen);
390 * Prevent ncurses from switching "back" to the normal screen when
391 * exiting from dialog. That would move the cursor to the original
392 * location saved in xterm. Normally curses sets the cursor position
393 * to the first line after the display, but the alternate screen
394 * switching is done after that point.
396 * Cancelling the strings altogether also works around the buggy
397 * implementation of alternate-screen in rxvt, etc., which clear
398 * more of the display than they should.
407 (void) keypad(stdscr, TRUE);
411 if (!dialog_state.no_mouse) {
415 dialog_state.screen_initialized = TRUE;
418 if (dialog_state.use_colors || dialog_state.use_shadow)
419 dlg_color_setup(); /* Set up colors */
422 /* Set screen to screen attribute */
427 static int defined_colors = 1; /* pair-0 is reserved */
429 * Setup for color display
432 dlg_color_setup(void)
436 if (has_colors()) { /* Terminal supports color? */
437 (void) start_color();
439 #if defined(HAVE_USE_DEFAULT_COLORS)
440 use_default_colors();
443 #if defined(__NetBSD__) && defined(_CURSES_)
444 #define C_ATTR(x,y) (((x) != 0 ? A_BOLD : 0) | COLOR_PAIR((y)))
445 /* work around bug in NetBSD curses */
446 for (i = 0; i < sizeof(dlg_color_table) /
447 sizeof(dlg_color_table[0]); i++) {
449 /* Initialize color pairs */
450 (void) init_pair(i + 1,
451 dlg_color_table[i].fg,
452 dlg_color_table[i].bg);
454 /* Setup color attributes */
455 dlg_color_table[i].atr = C_ATTR(dlg_color_table[i].hilite, i + 1);
457 defined_colors = i + 1;
459 for (i = 0; i < sizeof(dlg_color_table) /
460 sizeof(dlg_color_table[0]); i++) {
462 /* Initialize color pairs */
463 chtype color = dlg_color_pair(dlg_color_table[i].fg,
464 dlg_color_table[i].bg);
466 /* Setup color attributes */
467 dlg_color_table[i].atr = ((dlg_color_table[i].hilite
474 dialog_state.use_colors = FALSE;
475 dialog_state.use_shadow = FALSE;
480 dlg_color_count(void)
482 return sizeof(dlg_color_table) / sizeof(dlg_color_table[0]);
486 * Wrapper for getattrs(), or the more cumbersome X/Open wattr_get().
489 dlg_get_attrs(WINDOW *win)
493 result = (chtype) getattrs(win);
497 wattr_get(win, &my_result, &my_pair, NULL);
504 * Reuse color pairs (they are limited), returning a COLOR_PAIR() value if we
505 * have (or can) define a pair with the given color as foreground on the
506 * window's defined background.
509 dlg_color_pair(int foreground, int background)
516 for (pair = 1; pair < defined_colors; ++pair) {
517 if (pair_content((short) pair, &fg, &bg) != ERR
519 && bg == background) {
520 result = (chtype) COLOR_PAIR(pair);
525 if (!found && (defined_colors + 1) < COLOR_PAIRS) {
526 pair = defined_colors++;
527 (void) init_pair((short) pair, (short) foreground, (short) background);
528 result = (chtype) COLOR_PAIR(pair);
534 * Reuse color pairs (they are limited), returning a COLOR_PAIR() value if we
535 * have (or can) define a pair with the given color as foreground on the
536 * window's defined background.
539 define_color(WINDOW *win, int foreground)
541 chtype attrs = dlg_get_attrs(win);
543 short fg, bg, background;
545 if ((pair = PAIR_NUMBER(attrs)) != 0
546 && pair_content((short) pair, &fg, &bg) != ERR) {
549 background = COLOR_BLACK;
551 return dlg_color_pair(foreground, background);
556 * End using dialog functions.
561 if (dialog_state.screen_initialized) {
562 dialog_state.screen_initialized = FALSE;
565 (void) fflush(stdout);
570 #define isOurEscape(p) (((p)[0] == '\\') && ((p)[1] == 'Z') && ((p)[2] != 0))
573 dlg_count_real_columns(const char *text)
575 int result = dlg_count_columns(text);
576 if (result && dialog_vars.colors) {
579 if (dialog_vars.colors && isOurEscape(text)) {
580 hidden += ESCAPE_LEN;
592 centered(int width, const char *string)
594 int need = dlg_count_real_columns(string);
597 left = (width - need) / 2 - 1;
603 #ifdef USE_WIDE_CURSES
605 is_combining(const char *txt, int *combined)
609 if (*combined == 0) {
610 if (UCH(*txt) >= 128) {
613 size_t given = strlen(txt);
616 memset(&state, 0, sizeof(state));
617 len = mbrtowc(&wch, txt, given, &state);
618 if ((int) len > 0 && wcwidth(wch) == 0) {
619 *combined = (int) len - 1;
632 * Print up to 'cols' columns from 'text', optionally rendering our escape
633 * sequence for attributes and color.
636 dlg_print_text(WINDOW *win, const char *txt, int cols, chtype *attr)
638 int y_origin, x_origin;
639 int y_before, x_before = 0;
640 int y_after, x_after;
645 #ifdef USE_WIDE_CURSES
649 getyx(win, y_origin, x_origin);
650 while (cols > 0 && (*txt != '\0')) {
651 if (dialog_vars.colors) {
652 while (isOurEscape(txt)) {
656 switch (code = CharOf(*txt)) {
667 *attr |= define_color(win, code - '0');
683 *attr &= ~A_UNDERLINE;
686 *attr |= A_UNDERLINE;
695 if (ended || *txt == '\n' || *txt == '\0')
697 useattr = (*attr) & A_ATTRIBUTES;
700 * Prevent this from making text invisible when the foreground and
701 * background colors happen to be the same, and there's no bold
704 if ((useattr & A_COLOR) != 0 && (useattr & A_BOLD) == 0) {
705 short pair = (short) PAIR_NUMBER(useattr);
707 if (pair_content(pair, &fg, &bg) != ERR
710 useattr |= dlg_color_pair(fg, ((bg == COLOR_BLACK)
717 * Write the character, using curses to tell exactly how wide it
718 * is. If it is a tab, discount that, since the caller thinks
719 * tabs are nonprinting, and curses will expand tabs to one or
722 thisTab = (CharOf(*txt) == TAB);
724 getyx(win, y_before, x_before);
727 (void) waddch(win, CharOf(*txt++) | useattr);
728 getyx(win, y_after, x_after);
729 if (thisTab && (y_after == y_origin))
730 tabbed += (x_after - x_before);
731 if ((y_after != y_origin) ||
732 (x_after >= (cols + tabbed + x_origin)
733 #ifdef USE_WIDE_CURSES
734 && !is_combining(txt, &combined)
743 * Print one line of the prompt in the window within the limits of the
744 * specified right margin. The line will end on a word boundary and a pointer
745 * to the start of the next line is returned, or a NULL pointer if the end of
746 * *prompt is reached.
749 dlg_print_line(WINDOW *win,
752 int lm, int rm, int *x)
754 const char *wrap_ptr = prompt;
755 const char *test_ptr = prompt;
756 const char *hide_ptr = 0;
757 const int *cols = dlg_index_columns(prompt);
758 const int *indx = dlg_index_wchars(prompt);
763 int limit = dlg_count_wchars(prompt);
770 * Set *test_ptr to the end of the line or the right margin (rm), whichever
771 * is less, and set wrap_ptr to the end of the last word in the line.
773 for (n = 0; n < limit; ++n) {
774 test_ptr = prompt + indx[test_inx];
775 if (*test_ptr == '\n' || *test_ptr == '\0' || cur_x >= (rm + hidden))
777 if (*test_ptr == TAB && n == 0) {
778 tabbed = 8; /* workaround for leading tabs */
779 } else if (*test_ptr == ' ' && n != 0 && prompt[indx[n - 1]] != ' ') {
782 } else if (dialog_vars.colors && isOurEscape(test_ptr)) {
784 hidden += ESCAPE_LEN;
785 n += (ESCAPE_LEN - 1);
787 cur_x = lm + tabbed + cols[n + 1];
788 if (cur_x > (rm + hidden))
794 * If the line doesn't reach the right margin in the middle of a word, then
795 * we don't have to wrap it at the end of the previous word.
797 test_ptr = prompt + indx[test_inx];
798 if (*test_ptr == '\n' || *test_ptr == ' ' || *test_ptr == '\0') {
800 while (wrap_inx > 0 && prompt[indx[wrap_inx - 1]] == ' ') {
803 *x = lm + indx[wrap_inx];
804 } else if (*x == 1 && cur_x >= rm) {
806 * If the line has no spaces, then wrap it anyway at the right margin
811 wrap_ptr = prompt + indx[wrap_inx];
812 #ifdef USE_WIDE_CURSES
813 if (UCH(*wrap_ptr) >= 128) {
815 while (is_combining(wrap_ptr, &combined)) {
822 * If we found hidden text past the last point that we will display,
823 * discount that from the displayed length.
825 if ((hide_ptr != 0) && (hide_ptr >= wrap_ptr)) {
826 hidden -= ESCAPE_LEN;
828 while (test_ptr < wrap_ptr) {
829 if (dialog_vars.colors && isOurEscape(test_ptr)) {
830 hidden -= ESCAPE_LEN;
831 test_ptr += ESCAPE_LEN;
839 * Print the line if we have a window pointer. Otherwise this routine
840 * is just being called for sizing the window.
843 dlg_print_text(win, prompt, (cols[wrap_inx] - hidden), attr);
846 /* *x tells the calling function how long the line was */
852 /* Find the start of the next line and return a pointer to it */
854 while (*test_ptr == ' ')
856 if (*test_ptr == '\n')
862 justify_text(WINDOW *win,
866 int *high, int *wide)
868 chtype attr = A_NORMAL;
869 int x = (2 * MARGIN);
872 int lm = (2 * MARGIN); /* left margin (box-border plus a space) */
873 int rm = limit_x; /* right margin */
874 int bm = limit_y; /* bottom margin */
875 int last_y = 0, last_x = 0;
885 getyx(win, last_y, last_x);
886 while (y <= bm && *prompt) {
889 if (*prompt == '\n') {
890 while (*prompt == '\n' && y < bm) {
891 if (*(prompt + 1) != '\0') {
894 (void) wmove(win, y, lm);
899 (void) wmove(win, y, lm);
902 prompt = dlg_print_line(win, &attr, prompt, lm, rm, &x);
904 getyx(win, last_y, last_x);
909 (void) wmove(win, y, lm);
911 max_x = MAX(max_x, x);
913 /* Move back to the last position after drawing prompt, for msgbox. */
915 (void) wmove(win, last_y, last_x);
917 /* Set the final height and width for the calling function */
925 * Print a string of text in a window, automatically wrap around to the next
926 * line if the string is too long to fit on one line. Note that the string may
927 * contain embedded newlines.
930 dlg_print_autowrap(WINDOW *win, const char *prompt, int height, int width)
932 justify_text(win, prompt,
935 (int *) 0, (int *) 0);
939 * Display the message in a scrollable window. Actually the way it works is
940 * that we create a "tall" window of the proper width, let the text wrap within
941 * that, and copy a slice of the result to the dialog.
943 * It works for ncurses. Other curses implementations show only blanks (Tru64)
944 * or garbage (NetBSD).
947 dlg_print_scrolled(WINDOW *win,
957 (void) pauseopt; /* used only for ncurses */
959 getyx(win, oldy, oldx);
960 #ifdef NCURSES_VERSION
962 int wide = width - (2 * MARGIN);
970 #if defined(NCURSES_VERSION_PATCH) && NCURSES_VERSION_PATCH >= 20040417
972 * If we're not limited by the screensize, allow text to possibly be
973 * one character per line.
975 if ((len = dlg_count_columns(prompt)) > high)
978 dummy = newwin(high, width, 0, 0);
980 wattrset(win, dialog_attr);
981 dlg_print_autowrap(win, prompt, height + 1 + (3 * MARGIN), width);
984 wbkgdset(dummy, dialog_attr | ' ');
985 wattrset(dummy, dialog_attr);
987 dlg_print_autowrap(dummy, prompt, high, width);
991 copywin(dummy, /* srcwin */
993 offset + MARGIN, /* sminrow */
994 MARGIN, /* smincol */
995 MARGIN, /* dminrow */
996 MARGIN, /* dmincol */
997 height, /* dmaxrow */
1003 /* if the text is incomplete, or we have scrolled, show the percentage */
1004 if (y > 0 && wide > 4) {
1005 percent = (int) ((height + offset) * 100.0 / y);
1010 if (offset != 0 || percent != 100) {
1011 (void) wattrset(win, position_indicator_attr);
1012 (void) wmove(win, MARGIN + height, wide - 4);
1013 (void) sprintf(buffer, "%d%%", percent);
1014 (void) waddstr(win, buffer);
1015 if ((len = (int) strlen(buffer)) < 4) {
1016 wattrset(win, border_attr);
1017 whline(win, dlg_boxchar(ACS_HLINE), 4 - len);
1021 last = (y - height);
1027 wattrset(win, dialog_attr);
1028 dlg_print_autowrap(win, prompt, height + 1 + (3 * MARGIN), width);
1031 wmove(win, oldy, oldx);
1036 dlg_check_scrolled(int key, int last, int page, bool * show, int *offset)
1043 case DLGK_PAGE_FIRST:
1049 case DLGK_PAGE_LAST:
1050 if (*offset < last) {
1061 case DLGK_GRID_DOWN:
1062 if (*offset < last) {
1067 case DLGK_PAGE_PREV:
1075 case DLGK_PAGE_NEXT:
1076 if (*offset < last) {
1091 * Calculate the window size for preformatted text. This will calculate box
1092 * dimensions that are at or close to the specified aspect ratio for the prompt
1093 * string with all spaces and newlines preserved and additional newlines added
1097 auto_size_preformatted(const char *prompt, int *height, int *width)
1099 int high = 0, wide = 0;
1100 float car; /* Calculated Aspect Ratio */
1102 int max_y = SLINES - 1;
1103 int max_x = SCOLS - 2;
1104 int max_width = max_x;
1105 int ar = dialog_state.aspect_ratio;
1107 /* Get the initial dimensions */
1108 justify_text((WINDOW *) 0, prompt, max_y, max_x, &high, &wide);
1109 car = (float) (wide / high);
1112 * If the aspect ratio is greater than it should be, then decrease the
1113 * width proportionately.
1116 diff = car / (float) ar;
1117 max_x = (int) ((float) wide / diff + 4);
1118 justify_text((WINDOW *) 0, prompt, max_y, max_x, &high, &wide);
1119 car = (float) wide / (float) high;
1123 * If the aspect ratio is too small after decreasing the width, then
1124 * incrementally increase the width until the aspect ratio is equal to or
1125 * greater than the specified aspect ratio.
1127 while (car < ar && max_x < max_width) {
1129 justify_text((WINDOW *) 0, prompt, max_y, max_x, &high, &wide);
1130 car = (float) (wide / high);
1138 * Find the length of the longest "word" in the given string. By setting the
1139 * widget width at least this long, we can avoid splitting a word on the
1143 longest_word(const char *string)
1145 int length, result = 0;
1147 while (*string != '\0') {
1149 while (*string != '\0' && !isspace(UCH(*string))) {
1153 result = MAX(result, length);
1154 if (*string != '\0')
1161 * if (height or width == -1) Maximize()
1162 * if (height or width == 0), justify and return actual limits.
1165 real_auto_size(const char *title,
1167 int *height, int *width,
1168 int boxlines, int mincols)
1170 int x = (dialog_vars.begin_set ? dialog_vars.begin_x : 2);
1171 int y = (dialog_vars.begin_set ? dialog_vars.begin_y : 1);
1172 int title_length = title ? dlg_count_columns(title) : 0;
1176 int save_high = *height;
1177 int save_wide = *width;
1194 wide = MAX(title_length, mincols);
1195 if (strchr(prompt, '\n') == 0) {
1196 double val = (dialog_state.aspect_ratio *
1197 dlg_count_real_columns(prompt));
1198 double xxx = sqrt(val);
1199 int tmp = (int) xxx;
1200 wide = MAX(wide, tmp);
1201 wide = MAX(wide, longest_word(prompt));
1202 justify_text((WINDOW *) 0, prompt, high, wide, height, width);
1204 auto_size_preformatted(prompt, height, width);
1208 justify_text((WINDOW *) 0, prompt, high, wide, height, width);
1212 if (*width < title_length) {
1213 justify_text((WINDOW *) 0, prompt, high, title_length, height, width);
1214 *width = title_length;
1217 if (*width < mincols && save_wide == 0)
1221 *height += boxlines + 2;
1224 *height = save_high;
1229 /* End of real_auto_size() */
1232 dlg_auto_size(const char *title,
1239 real_auto_size(title, prompt, height, width, boxlines, mincols);
1241 if (*width > SCOLS) {
1246 if (*height > SLINES)
1251 * if (height or width == -1) Maximize()
1252 * if (height or width == 0)
1253 * height=MIN(SLINES, num.lines in fd+n);
1254 * width=MIN(SCOLS, MAX(longer line+n, mincols));
1257 dlg_auto_sizefile(const char *title,
1265 int len = title ? dlg_count_columns(title) : 0;
1272 /* Open input file for reading */
1273 if ((fd = fopen(file, "rb")) == NULL)
1274 dlg_exiterr("dlg_auto_sizefile: Cannot open input file %s", file);
1276 if ((*height == -1) || (*width == -1)) {
1277 *height = SLINES - (dialog_vars.begin_set ? dialog_vars.begin_y : 0);
1278 *width = SCOLS - (dialog_vars.begin_set ? dialog_vars.begin_x : 0);
1280 if ((*height != 0) && (*width != 0)) {
1284 if (*height > SLINES)
1291 while (((ch = getc(fd)) != '\n') && !feof(fd))
1292 if ((ch == TAB) && (dialog_vars.tab_correct))
1293 offset += dialog_state.tab_len - (offset % dialog_state.tab_len);
1303 /* now 'count' has the number of lines of fd and 'len' the max length */
1305 *height = MIN(SLINES, count + numlines + boxlines);
1306 *width = MIN(SCOLS, MAX((len + nc), mincols));
1307 /* here width and height can be maximized if > SCOLS|SLINES because
1308 textbox-like widgets don't put all <file> on the screen.
1309 Msgbox-like widget instead have to put all <text> correctly. */
1315 dlg_get_cell_attrs(WINDOW *win)
1318 #ifdef USE_WIDE_CURSES
1323 if (win_wch(win, &wch) == OK
1324 && getcchar(&wch, &cc, &attrs, &pair, NULL) == OK) {
1330 result = winch(win) & (A_ATTRIBUTES & ~A_COLOR);
1336 * Draw a rectangular box with line drawing characters.
1338 * borderchar is used to color the upper/left edges.
1340 * boxchar is used to color the right/lower edges. It also is fill-color used
1341 * for the box contents.
1343 * Normally, if you are drawing a scrollable box, use menubox_border_attr for
1344 * boxchar, and menubox_attr for borderchar since the scroll-arrows are drawn
1345 * with menubox_attr at the top, and menubox_border_attr at the bottom. That
1346 * also (given the default color choices) produces a recessed effect.
1348 * If you want a raised effect (and are not going to use the scroll-arrows),
1349 * reverse this choice.
1352 dlg_draw_box2(WINDOW *win, int y, int x, int height, int width,
1353 chtype boxchar, chtype borderchar, chtype borderchar2)
1356 chtype save = dlg_get_attrs(win);
1359 for (i = 0; i < height; i++) {
1360 (void) wmove(win, y + i, x);
1361 for (j = 0; j < width; j++)
1363 (void) waddch(win, borderchar | dlg_boxchar(ACS_ULCORNER));
1364 else if (i == height - 1 && !j)
1365 (void) waddch(win, borderchar | dlg_boxchar(ACS_LLCORNER));
1366 else if (!i && j == width - 1)
1367 (void) waddch(win, borderchar2 | dlg_boxchar(ACS_URCORNER));
1368 else if (i == height - 1 && j == width - 1)
1369 (void) waddch(win, borderchar2 | dlg_boxchar(ACS_LRCORNER));
1371 (void) waddch(win, borderchar | dlg_boxchar(ACS_HLINE));
1372 else if (i == height - 1)
1373 (void) waddch(win, borderchar2 | dlg_boxchar(ACS_HLINE));
1375 (void) waddch(win, borderchar | dlg_boxchar(ACS_VLINE));
1376 else if (j == width - 1)
1377 (void) waddch(win, borderchar2 | dlg_boxchar(ACS_VLINE));
1379 (void) waddch(win, boxchar | ' ');
1381 wattrset(win, save);
1385 dlg_draw_box(WINDOW *win, int y, int x, int height, int width,
1386 chtype boxchar, chtype borderchar)
1388 dlg_draw_box2(win, y, x, height, width, boxchar, borderchar, boxchar);
1391 static DIALOG_WINDOWS *
1392 find_window(WINDOW *win)
1394 DIALOG_WINDOWS *result = 0;
1397 for (p = dialog_state.all_windows; p != 0; p = p->next) {
1398 if (p->normal == win) {
1408 * If we have wchgat(), use that for updating shadow attributes, to work with
1409 * wide-character data.
1413 * Check if the given point is "in" the given window. If so, return the window
1414 * pointer, otherwise null.
1417 in_window(WINDOW *win, int y, int x)
1420 int y_base = getbegy(win);
1421 int x_base = getbegx(win);
1422 int y_last = getmaxy(win) + y_base;
1423 int x_last = getmaxx(win) + x_base;
1425 if (y >= y_base && y <= y_last && x >= x_base && x <= x_last)
1431 window_at_cell(DIALOG_WINDOWS * dw, int y, int x)
1435 int y_want = y + getbegy(dw->shadow);
1436 int x_want = x + getbegx(dw->shadow);
1438 for (p = dialog_state.all_windows; p != 0; p = p->next) {
1439 if (dw->normal != p->normal
1440 && dw->shadow != p->normal
1441 && (result = in_window(p->normal, y_want, x_want)) != 0) {
1452 in_shadow(WINDOW *normal, WINDOW *shadow, int y, int x)
1454 bool result = FALSE;
1455 int ybase = getbegy(normal);
1456 int ylast = getmaxy(normal) + ybase;
1457 int xbase = getbegx(normal);
1458 int xlast = getmaxx(normal) + xbase;
1460 y += getbegy(shadow);
1461 x += getbegx(shadow);
1463 if (y >= ybase + SHADOW_ROWS
1464 && y < ylast + SHADOW_ROWS
1466 && x < xlast + SHADOW_COLS) {
1467 /* in the right-side */
1469 } else if (y >= ylast
1470 && y < ylast + SHADOW_ROWS
1471 && x >= ybase + SHADOW_COLS
1472 && x < ylast + SHADOW_COLS) {
1473 /* check the bottom */
1481 * When erasing a shadow, check each cell to make sure that it is not part of
1482 * another box's shadow. This is a little complicated since most shadows are
1483 * merged onto stdscr.
1486 last_shadow(DIALOG_WINDOWS * dw, int y, int x)
1491 for (p = dialog_state.all_windows; p != 0; p = p->next) {
1492 if (p->normal != dw->normal
1493 && in_shadow(p->normal, dw->shadow, y, x)) {
1502 repaint_cell(DIALOG_WINDOWS * dw, bool draw, int y, int x)
1504 WINDOW *win = dw->shadow;
1508 if ((cellwin = window_at_cell(dw, y, x)) != 0
1509 && (draw || last_shadow(dw, y, x))
1510 && (y2 = (y + getbegy(win) - getbegy(cellwin))) >= 0
1511 && (x2 = (x + getbegx(win) - getbegx(cellwin))) >= 0
1512 && wmove(cellwin, y2, x2) != ERR) {
1513 chtype the_cell = dlg_get_attrs(cellwin);
1514 chtype the_attr = (draw ? shadow_attr : the_cell);
1516 if (dlg_get_cell_attrs(cellwin) & A_ALTCHARSET) {
1517 the_attr |= A_ALTCHARSET;
1521 the_attr & (chtype) (~A_COLOR),
1522 (short) PAIR_NUMBER(the_attr),
1526 chtype the_char = ((winch(cellwin) & A_CHARTEXT) | the_attr);
1527 (void) waddch(cellwin, the_char);
1530 wnoutrefresh(cellwin);
1534 #define RepaintCell(dw, draw, y, x) repaint_cell(dw, draw, y, x)
1537 repaint_shadow(DIALOG_WINDOWS * dw, bool draw, int y, int x, int height, int width)
1541 if (UseShadow(dw)) {
1543 chtype save = dlg_get_attrs(dw->shadow);
1544 wattrset(dw->shadow, draw ? shadow_attr : screen_attr);
1546 for (i = 0; i < SHADOW_ROWS; ++i) {
1547 for (j = 0; j < width; ++j) {
1548 RepaintCell(dw, draw, i + y + height, j + x + SHADOW_COLS);
1551 for (i = 0; i < height; i++) {
1552 for (j = 0; j < SHADOW_COLS; ++j) {
1553 RepaintCell(dw, draw, i + y + SHADOW_ROWS, j + x + width);
1556 (void) wnoutrefresh(dw->shadow);
1558 wattrset(dw->shadow, save);
1564 * Draw a shadow on the parent window corresponding to the right- and
1565 * bottom-edge of the child window, to give a 3-dimensional look.
1568 draw_childs_shadow(DIALOG_WINDOWS * dw)
1570 if (UseShadow(dw)) {
1573 getbegy(dw->normal) - getbegy(dw->shadow),
1574 getbegx(dw->normal) - getbegx(dw->shadow),
1575 getmaxy(dw->normal),
1576 getmaxx(dw->normal));
1581 * Erase a shadow on the parent window corresponding to the right- and
1582 * bottom-edge of the child window.
1585 erase_childs_shadow(DIALOG_WINDOWS * dw)
1587 if (UseShadow(dw)) {
1590 getbegy(dw->normal) - getbegy(dw->shadow),
1591 getbegx(dw->normal) - getbegx(dw->shadow),
1592 getmaxy(dw->normal),
1593 getmaxx(dw->normal));
1598 * Draw shadows along the right and bottom edge to give a more 3D look
1602 dlg_draw_shadow(WINDOW *win, int y, int x, int height, int width)
1604 repaint_shadow(find_window(win), TRUE, y, x, height, width);
1606 #endif /* HAVE_COLOR */
1609 * Allow shell scripts to remap the exit codes so they can distinguish ESC
1616 static const struct {
1620 { DLG_EXIT_CANCEL, "DIALOG_CANCEL" },
1621 { DLG_EXIT_ERROR, "DIALOG_ERROR" },
1622 { DLG_EXIT_ESC, "DIALOG_ESC" },
1623 { DLG_EXIT_EXTRA, "DIALOG_EXTRA" },
1624 { DLG_EXIT_HELP, "DIALOG_HELP" },
1625 { DLG_EXIT_OK, "DIALOG_OK" },
1626 { DLG_EXIT_ITEM_HELP, "DIALOG_ITEM_HELP" },
1634 bool overridden = FALSE;
1637 for (n = 0; n < sizeof(table) / sizeof(table[0]); n++) {
1638 if (table[n].code == code) {
1639 if ((name = getenv(table[n].name)) != 0) {
1640 value = strtol(name, &temp, 0);
1641 if (temp != 0 && temp != name && *temp == '\0') {
1651 * Prior to 2004/12/19, a widget using --item-help would exit with "OK"
1652 * if the help button were selected. Now we want to exit with "HELP",
1653 * but allow the environment variable to override.
1655 if (code == DLG_EXIT_ITEM_HELP && !overridden) {
1656 code = DLG_EXIT_HELP;
1659 #ifdef HAVE_DLG_TRACE
1660 dlg_trace((const char *) 0); /* close it */
1664 _dlg_inputstr_leaks();
1665 #if defined(NCURSES_VERSION) && defined(HAVE__NC_FREE_AND_EXIT)
1666 _nc_free_and_exit(code);
1670 if (dialog_state.input == stdin) {
1674 * Just in case of using --input-fd option, do not
1675 * call atexit functions of ncurses which may hang.
1677 if (dialog_state.input) {
1678 fclose(dialog_state.input);
1679 dialog_state.input = 0;
1681 if (dialog_state.pipe_input) {
1682 if (dialog_state.pipe_input != stdin) {
1683 fclose(dialog_state.pipe_input);
1684 dialog_state.pipe_input = 0;
1691 /* quit program killing all tailbg */
1693 dlg_exiterr(const char *fmt,...)
1700 (void) fputc('\n', stderr);
1702 (void) vfprintf(stderr, fmt, ap);
1704 (void) fputc('\n', stderr);
1706 dlg_killall_bg(&retval);
1708 (void) fflush(stderr);
1709 (void) fflush(stdout);
1710 dlg_exit(DLG_EXIT_ERROR);
1716 if (dialog_vars.beep_signal) {
1718 dialog_vars.beep_signal = 0;
1723 dlg_print_size(int height, int width)
1725 if (dialog_vars.print_siz)
1726 fprintf(dialog_state.output, "Size: %d, %d\n", height, width);
1730 dlg_ctl_size(int height, int width)
1732 if (dialog_vars.size_err) {
1733 if ((width > COLS) || (height > LINES)) {
1734 dlg_exiterr("Window too big. (height, width) = (%d, %d). Max allowed (%d, %d).",
1735 height, width, LINES, COLS);
1738 else if ((dialog_state.use_shadow)
1739 && ((width > SCOLS || height > SLINES))) {
1740 if ((width <= COLS) && (height <= LINES)) {
1741 /* try again, without shadows */
1742 dialog_state.use_shadow = 0;
1744 dlg_exiterr("Window+Shadow too big. (height, width) = (%d, %d). Max allowed (%d, %d).",
1745 height, width, SLINES, SCOLS);
1753 * If the --tab-correct was not selected, convert tabs to single spaces.
1756 dlg_tab_correct_str(char *prompt)
1760 if (dialog_vars.tab_correct) {
1761 while ((ptr = strchr(prompt, TAB)) != NULL) {
1769 dlg_calc_listh(int *height, int *list_height, int item_no)
1771 /* calculate new height and list_height */
1772 int rows = SLINES - (dialog_vars.begin_set ? dialog_vars.begin_y : 0);
1773 if (rows - (*height) > 0) {
1774 if (rows - (*height) > item_no)
1775 *list_height = item_no;
1777 *list_height = rows - (*height);
1779 (*height) += (*list_height);
1784 dlg_calc_listw(int item_no, char **items, int group)
1786 int n, i, len1 = 0, len2 = 0;
1787 for (i = 0; i < (item_no * group); i += group) {
1788 if ((n = dlg_count_columns(items[i])) > len1)
1790 if ((n = dlg_count_columns(items[i + 1])) > len2)
1797 dlg_calc_list_width(int item_no, DIALOG_LISTITEM * items)
1799 int n, i, len1 = 0, len2 = 0;
1800 for (i = 0; i < item_no; ++i) {
1801 if ((n = dlg_count_columns(items[i].name)) > len1)
1803 if ((n = dlg_count_columns(items[i].text)) > len2)
1812 static char empty[] = "";
1817 dlg_strclone(const char *cprompt)
1819 char *prompt = dlg_malloc(char, strlen(cprompt) + 1);
1820 assert_ptr(prompt, "dlg_strclone");
1821 strcpy(prompt, cprompt);
1826 dlg_asciibox(chtype ch)
1830 if (ch == ACS_ULCORNER)
1832 else if (ch == ACS_LLCORNER)
1834 else if (ch == ACS_URCORNER)
1836 else if (ch == ACS_LRCORNER)
1838 else if (ch == ACS_HLINE)
1840 else if (ch == ACS_VLINE)
1842 else if (ch == ACS_LTEE)
1844 else if (ch == ACS_RTEE)
1846 else if (ch == ACS_UARROW)
1848 else if (ch == ACS_DARROW)
1855 dlg_boxchar(chtype ch)
1857 chtype result = dlg_asciibox(ch);
1860 if (dialog_vars.ascii_lines)
1862 else if (dialog_vars.no_lines)
1869 dlg_box_x_ordinate(int width)
1873 if (dialog_vars.begin_set == 1) {
1874 x = dialog_vars.begin_x;
1876 /* center dialog box on screen unless --begin-set */
1877 x = (SCOLS - width) / 2;
1883 dlg_box_y_ordinate(int height)
1887 if (dialog_vars.begin_set == 1) {
1888 y = dialog_vars.begin_y;
1890 /* center dialog box on screen unless --begin-set */
1891 y = (SLINES - height) / 2;
1897 dlg_draw_title(WINDOW *win, const char *title)
1899 if (title != NULL) {
1900 chtype attr = A_NORMAL;
1901 chtype save = dlg_get_attrs(win);
1902 int x = centered(getmaxx(win), title);
1904 wattrset(win, title_attr);
1906 dlg_print_text(win, title, getmaxx(win) - x, &attr);
1907 wattrset(win, save);
1912 dlg_draw_bottom_box2(WINDOW *win, chtype on_left, chtype on_right, chtype on_inside)
1914 int width = getmaxx(win);
1915 int height = getmaxy(win);
1918 wattrset(win, on_left);
1919 (void) wmove(win, height - 3, 0);
1920 (void) waddch(win, dlg_boxchar(ACS_LTEE));
1921 for (i = 0; i < width - 2; i++)
1922 (void) waddch(win, dlg_boxchar(ACS_HLINE));
1923 wattrset(win, on_right);
1924 (void) waddch(win, dlg_boxchar(ACS_RTEE));
1925 wattrset(win, on_inside);
1926 (void) wmove(win, height - 2, 1);
1927 for (i = 0; i < width - 2; i++)
1928 (void) waddch(win, ' ');
1932 dlg_draw_bottom_box(WINDOW *win)
1934 dlg_draw_bottom_box2(win, border_attr, dialog_attr, dialog_attr);
1938 * Remove a window, repainting everything else. This would be simpler if we
1939 * used the panel library, but that is not _always_ available.
1942 dlg_del_window(WINDOW *win)
1944 DIALOG_WINDOWS *p, *q, *r;
1947 * If --keep-window was set, do not delete/repaint the windows.
1949 if (dialog_vars.keep_window)
1952 /* Leave the main window untouched if there are no background windows.
1953 * We do this so the current window will not be cleared on exit, allowing
1954 * things like the infobox demo to run without flicker.
1956 if (dialog_state.getc_callbacks != 0) {
1958 wnoutrefresh(stdscr);
1961 for (p = dialog_state.all_windows, q = r = 0; p != 0; r = p, p = p->next) {
1962 if (p->normal == win) {
1963 q = p; /* found a match - should be only one */
1965 dialog_state.all_windows = p->next;
1970 if (p->shadow != 0) {
1971 touchwin(p->shadow);
1972 wnoutrefresh(p->shadow);
1974 touchwin(p->normal);
1975 wnoutrefresh(p->normal);
1980 if (dialog_state.all_windows != 0)
1981 erase_childs_shadow(q);
1982 del_subwindows(q->normal);
1984 dlg_unregister_window(q->normal);
1991 * Create a window, optionally with a shadow.
1994 dlg_new_window(int height, int width, int y, int x)
1996 return dlg_new_modal_window(stdscr, height, width, y, x);
2000 * "Modal" windows differ from normal ones by having a shadow in a window
2001 * separate from the standard screen.
2004 dlg_new_modal_window(WINDOW *parent, int height, int width, int y, int x)
2007 DIALOG_WINDOWS *p = dlg_calloc(DIALOG_WINDOWS, 1);
2010 if ((win = newwin(height, width, y, x)) == 0) {
2011 dlg_exiterr("Can't make new window at (%d,%d), size (%d,%d).\n",
2012 y, x, height, width);
2014 p->next = dialog_state.all_windows;
2016 dialog_state.all_windows = p;
2018 if (dialog_state.use_shadow) {
2020 draw_childs_shadow(p);
2024 (void) keypad(win, TRUE);
2029 * Move/Resize a window, optionally with a shadow.
2033 dlg_move_window(WINDOW *win, int height, int width, int y, int x)
2038 dlg_ctl_size(height, width);
2040 if ((p = find_window(win)) != 0) {
2041 (void) wresize(win, height, width);
2042 (void) mvwin(win, y, x);
2044 if (p->shadow != 0) {
2045 if (dialog_state.use_shadow) {
2046 (void) mvwin(p->shadow, y + SHADOW_ROWS, x + SHADOW_COLS);
2055 draw_childs_shadow(p);
2060 #endif /* KEY_RESIZE */
2063 dlg_sub_window(WINDOW *parent, int height, int width, int y, int x)
2067 if ((win = subwin(parent, height, width, y, x)) == 0) {
2068 dlg_exiterr("Can't make sub-window at (%d,%d), size (%d,%d).\n",
2069 y, x, height, width);
2072 add_subwindow(parent, win);
2073 (void) keypad(win, TRUE);
2079 dlg_default_item(char **items, int llen)
2083 if (dialog_vars.default_item != 0) {
2085 while (*items != 0) {
2086 if (!strcmp(dialog_vars.default_item, *items)) {
2098 dlg_default_listitem(DIALOG_LISTITEM * items)
2102 if (dialog_vars.default_item != 0) {
2104 while (items->name != 0) {
2105 if (!strcmp(dialog_vars.default_item, items->name)) {
2117 * Draw the string for item_help
2120 dlg_item_help(const char *txt)
2122 if (USE_ITEM_HELP(txt)) {
2123 chtype attr = A_NORMAL;
2126 wattrset(stdscr, itemhelp_attr);
2127 (void) wmove(stdscr, LINES - 1, 0);
2128 (void) wclrtoeol(stdscr);
2130 dlg_print_text(stdscr, txt, COLS - 1, &attr);
2131 if (itemhelp_attr & A_COLOR) {
2132 /* fill the remainder of the line with the window's attributes */
2133 getyx(stdscr, y, x);
2140 (void) wnoutrefresh(stdscr);
2144 #ifndef HAVE_STRCASECMP
2146 dlg_strcmp(const char *a, const char *b)
2153 if (isalpha(ac) && islower(ac))
2155 if (isalpha(bc) && islower(bc))
2158 if (ac == 0 || bc == 0 || cmp != 0)
2166 * Returns true if 'dst' points to a blank which follows another blank which
2167 * is not a leading blank on a line.
2170 trim_blank(char *base, char *dst)
2174 while (dst-- != base) {
2177 } else if (*dst != ' ') {
2187 * Change embedded "\n" substrings to '\n' characters and tabs to single
2188 * spaces. If there are no "\n"s, it will strip all extra spaces, for
2189 * justification. If it has "\n"'s, it will preserve extra spaces. If cr_wrap
2190 * is set, it will preserve '\n's.
2193 dlg_trim_string(char *s)
2198 int has_newlines = !dialog_vars.no_nl_expand && (strstr(s, "\\n") != 0);
2200 while (*p != '\0') {
2201 if (*p == TAB && !dialog_vars.nocollapse)
2204 if (has_newlines) { /* If prompt contains "\n" strings */
2205 if (*p == '\\' && *(p + 1) == 'n') {
2210 * Handle end of lines intelligently. If '\n' follows "\n"
2211 * then ignore the '\n'. This eliminates the need to escape
2212 * the '\n' character (no need to use "\n\").
2218 } else if (*p == '\n') {
2219 if (dialog_vars.cr_wrap)
2222 /* Replace the '\n' with a space if cr_wrap is not set */
2223 if (!trim_blank(base, s))
2227 } else /* If *p != '\n' */
2229 } else if (dialog_vars.trim_whitespace) {
2231 if (*(s - 1) != ' ') {
2236 } else if (*p == '\n') {
2237 if (dialog_vars.cr_wrap)
2239 else if (*(s - 1) != ' ') {
2240 /* Strip '\n's if cr_wrap is not set. */
2247 } else { /* If there are no "\n" strings */
2248 if (*p == ' ' && !dialog_vars.nocollapse) {
2249 if (!trim_blank(base, s))
2261 dlg_set_focus(WINDOW *parent, WINDOW *win)
2264 (void) wmove(parent,
2265 getpary(win) + getcury(win),
2266 getparx(win) + getcurx(win));
2267 (void) wnoutrefresh(win);
2273 * Returns the nominal maximum buffer size.
2276 dlg_max_input(int max_len)
2278 if (dialog_vars.max_input != 0 && dialog_vars.max_input < MAX_LEN)
2279 max_len = dialog_vars.max_input;
2285 * Free storage used for the result buffer.
2288 dlg_clr_result(void)
2290 if (dialog_vars.input_length) {
2291 dialog_vars.input_length = 0;
2292 if (dialog_vars.input_result)
2293 free(dialog_vars.input_result);
2295 dialog_vars.input_result = 0;
2299 * Setup a fixed-buffer for the result.
2302 dlg_set_result(const char *string)
2304 unsigned need = string ? (unsigned) strlen(string) + 1 : 0;
2306 /* inputstr.c needs a fixed buffer */
2311 * If the buffer is not big enough, allocate a new one.
2313 if (dialog_vars.input_length != 0
2314 || dialog_vars.input_result == 0
2315 || need > MAX_LEN) {
2319 dialog_vars.input_length = need;
2320 dialog_vars.input_result = dlg_malloc(char, need);
2321 assert_ptr(dialog_vars.input_result, "dlg_set_result");
2324 strcpy(dialog_vars.input_result, string ? string : "");
2326 return dialog_vars.input_result;
2330 * Accumulate results in dynamically allocated buffer.
2331 * If input_length is zero, it is a MAX_LEN buffer belonging to the caller.
2334 dlg_add_result(const char *string)
2336 unsigned have = (dialog_vars.input_result
2337 ? (unsigned) strlen(dialog_vars.input_result)
2339 unsigned want = (unsigned) strlen(string) + 1 + have;
2341 if ((want >= MAX_LEN)
2342 || (dialog_vars.input_length != 0)
2343 || (dialog_vars.input_result == 0)) {
2345 if (dialog_vars.input_length == 0
2346 || dialog_vars.input_result == 0) {
2348 char *save_result = dialog_vars.input_result;
2350 dialog_vars.input_length = want * 2;
2351 dialog_vars.input_result = dlg_malloc(char, dialog_vars.input_length);
2352 assert_ptr(dialog_vars.input_result, "dlg_add_result malloc");
2353 dialog_vars.input_result[0] = '\0';
2354 if (save_result != 0)
2355 strcpy(dialog_vars.input_result, save_result);
2356 } else if (want >= dialog_vars.input_length) {
2357 dialog_vars.input_length = want * 2;
2358 dialog_vars.input_result = dlg_realloc(char,
2359 dialog_vars.input_length,
2360 dialog_vars.input_result);
2361 assert_ptr(dialog_vars.input_result, "dlg_add_result realloc");
2364 strcat(dialog_vars.input_result, string);
2368 * These are characters that (aside from the quote-delimiter) will have to
2369 * be escaped in a single- or double-quoted string.
2371 #define FIX_SINGLE "\n\\"
2372 #define FIX_DOUBLE FIX_SINGLE "[]{}?*;`~#$^&()|<>"
2375 * Returns the quote-delimiter.
2378 quote_delimiter(void)
2380 return dialog_vars.single_quoted ? "'" : "\"";
2384 * Returns true if we should quote the given string.
2387 must_quote(char *string)
2391 if (*string != '\0') {
2392 size_t len = strlen(string);
2393 if (strcspn(string, quote_delimiter()) != len)
2395 else if (strcspn(string, "\n\t ") != len)
2398 code = (strcspn(string, FIX_DOUBLE) != len);
2407 * Add a quoted string to the result buffer.
2410 dlg_add_quoted(char *string)
2413 const char *my_quote = quote_delimiter();
2414 const char *must_fix = (dialog_vars.single_quoted
2418 if (must_quote(string)) {
2420 dlg_add_result(my_quote);
2421 while (*string != '\0') {
2422 temp[0] = *string++;
2423 if (strchr(my_quote, *temp) || strchr(must_fix, *temp))
2424 dlg_add_result("\\");
2425 dlg_add_result(temp);
2427 dlg_add_result(my_quote);
2429 dlg_add_result(string);
2434 * When adding a result, make that depend on whether "--quoted" is used.
2437 dlg_add_string(char *string)
2439 if (dialog_vars.quoted) {
2440 dlg_add_quoted(string);
2442 dlg_add_result(string);
2447 dlg_need_separator(void)
2449 bool result = FALSE;
2451 if (dialog_vars.output_separator) {
2453 } else if (dialog_vars.input_result && *(dialog_vars.input_result)) {
2460 dlg_add_separator(void)
2462 const char *separator = (dialog_vars.separate_output) ? "\n" : " ";
2464 if (dialog_vars.output_separator)
2465 separator = dialog_vars.output_separator;
2467 dlg_add_result(separator);
2471 * Some widgets support only one value of a given variable - save/restore the
2472 * global dialog_vars so we can override it consistently.
2475 dlg_save_vars(DIALOG_VARS * vars)
2477 *vars = dialog_vars;
2481 * Most of the data in DIALOG_VARS is normally set by command-line options.
2482 * The input_result member is an exception; it is normally set by the dialog
2483 * library to return result values.
2486 dlg_restore_vars(DIALOG_VARS * vars)
2488 char *save_result = dialog_vars.input_result;
2489 unsigned save_length = dialog_vars.input_length;
2491 dialog_vars = *vars;
2492 dialog_vars.input_result = save_result;
2493 dialog_vars.input_length = save_length;
2497 * Called each time a widget is invoked which may do output, increment a count.
2500 dlg_does_output(void)
2502 dialog_state.output_count += 1;
2506 * Compatibility for different versions of curses.
2508 #if !(defined(HAVE_GETBEGX) && defined(HAVE_GETBEGY))
2510 dlg_getbegx(WINDOW *win)
2513 getbegyx(win, y, x);
2517 dlg_getbegy(WINDOW *win)
2520 getbegyx(win, y, x);
2525 #if !(defined(HAVE_GETCURX) && defined(HAVE_GETCURY))
2527 dlg_getcurx(WINDOW *win)
2534 dlg_getcury(WINDOW *win)
2542 #if !(defined(HAVE_GETMAXX) && defined(HAVE_GETMAXY))
2544 dlg_getmaxx(WINDOW *win)
2547 getmaxyx(win, y, x);
2551 dlg_getmaxy(WINDOW *win)
2554 getmaxyx(win, y, x);
2559 #if !(defined(HAVE_GETPARX) && defined(HAVE_GETPARY))
2561 dlg_getparx(WINDOW *win)
2564 getparyx(win, y, x);
2568 dlg_getpary(WINDOW *win)
2571 getparyx(win, y, x);
2576 #ifdef NEED_WGETPARENT
2578 dlg_wgetparent(WINDOW *win)
2584 for (p = dialog_state.all_subwindows; p != 0; p = p->next) {
2585 if (p->shadow == win) {