Index: util.c
===================================================================
--- util.c (nonexistent)
+++ util.c (revision 5)
@@ -0,0 +1,3031 @@
+/*
+ * $Id: util.c,v 1.303 2021/06/15 00:10:11 tom Exp $
+ *
+ * util.c -- miscellaneous utilities for dialog
+ *
+ * Copyright 2000-2020,2021 Thomas E. Dickey
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License, version 2.1
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to
+ * Free Software Foundation, Inc.
+ * 51 Franklin St., Fifth Floor
+ * Boston, MA 02110, USA.
+ *
+ * An earlier version of this program lists as authors
+ * Savio Lam (lam836@cs.cuhk.hk)
+ */
+
+#include <dialog.h>
+#include <dlg_keys.h>
+#include <dlg_internals.h>
+
+#include <sys/time.h>
+
+#ifdef HAVE_SETLOCALE
+#include <locale.h>
+#endif
+
+#ifdef NEED_WCHAR_H
+#include <wchar.h>
+#endif
+
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+
+#if defined(NCURSES_VERSION)
+#define CAN_KEEP_TITE 1
+#elif defined(__NetBSD_Version__) && (__NetBSD_Version__ >= 800000000)
+#define CAN_KEEP_TITE 1
+#else
+#define CAN_KEEP_TITE 0
+#endif
+
+#if CAN_KEEP_TITE
+#if defined(NCURSES_VERSION) && defined(HAVE_NCURSESW_TERM_H)
+#include <ncursesw/term.h>
+#elif defined(NCURSES_VERSION) && defined(HAVE_NCURSES_TERM_H)
+#include <ncurses/term.h>
+#else
+#include <term.h>
+#endif
+#endif
+
+#if defined(HAVE_WCHGAT)
+# if defined(NCURSES_VERSION_PATCH)
+# if NCURSES_VERSION_PATCH >= 20060715
+# define USE_WCHGAT 1
+# else
+# define USE_WCHGAT 0
+# endif
+# else
+# define USE_WCHGAT 1
+# endif
+#else
+# define USE_WCHGAT 0
+#endif
+
+/* globals */
+DIALOG_STATE dialog_state;
+DIALOG_VARS dialog_vars;
+
+#if !(defined(HAVE_WGETPARENT) && defined(HAVE_WINDOW__PARENT))
+#define NEED_WGETPARENT 1
+#else
+#undef NEED_WGETPARENT
+#endif
+
+#define concat(a,b) a##b
+
+#ifdef HAVE_RC_FILE
+#define RC_DATA(name,comment) , #name "_color", comment " color"
+#else
+#define RC_DATA(name,comment) /*nothing */
+#endif
+
+#ifdef HAVE_COLOR
+#include <dlg_colors.h>
+#ifdef HAVE_RC_FILE2
+#define COLOR_DATA(upr) , \
+ concat(DLGC_FG_,upr), \
+ concat(DLGC_BG_,upr), \
+ concat(DLGC_HL_,upr), \
+ concat(DLGC_UL_,upr), \
+ concat(DLGC_RV_,upr)
+#else /* HAVE_RC_FILE2 */
+#define COLOR_DATA(upr) , \
+ concat(DLGC_FG_,upr), \
+ concat(DLGC_BG_,upr), \
+ concat(DLGC_HL_,upr)
+#endif /* HAVE_RC_FILE2 */
+#else /* HAVE_COLOR */
+#define COLOR_DATA(upr) /*nothing */
+#endif /* HAVE_COLOR */
+
+#define UseShadow(dw) ((dw) != 0 && (dw)->normal != 0 && (dw)->shadow != 0)
+
+/*
+ * Table of color and attribute values, default is for mono display.
+ * The order matches the DIALOG_ATR() values.
+ */
+#define DATA(atr,upr,lwr,cmt) { atr COLOR_DATA(upr) RC_DATA(lwr,cmt) }
+/* *INDENT-OFF* */
+DIALOG_COLORS dlg_color_table[] =
+{
+ DATA(A_NORMAL, SCREEN, screen, "Screen"),
+ DATA(A_NORMAL, SHADOW, shadow, "Shadow"),
+ DATA(A_REVERSE, DIALOG, dialog, "Dialog box"),
+ DATA(A_REVERSE, TITLE, title, "Dialog box title"),
+ DATA(A_REVERSE, BORDER, border, "Dialog box border"),
+ DATA(A_BOLD, BUTTON_ACTIVE, button_active, "Active button"),
+ DATA(A_DIM, BUTTON_INACTIVE, button_inactive, "Inactive button"),
+ DATA(A_UNDERLINE, BUTTON_KEY_ACTIVE, button_key_active, "Active button key"),
+ DATA(A_UNDERLINE, BUTTON_KEY_INACTIVE, button_key_inactive, "Inactive button key"),
+ DATA(A_NORMAL, BUTTON_LABEL_ACTIVE, button_label_active, "Active button label"),
+ DATA(A_NORMAL, BUTTON_LABEL_INACTIVE, button_label_inactive, "Inactive button label"),
+ DATA(A_REVERSE, INPUTBOX, inputbox, "Input box"),
+ DATA(A_REVERSE, INPUTBOX_BORDER, inputbox_border, "Input box border"),
+ DATA(A_REVERSE, SEARCHBOX, searchbox, "Search box"),
+ DATA(A_REVERSE, SEARCHBOX_TITLE, searchbox_title, "Search box title"),
+ DATA(A_REVERSE, SEARCHBOX_BORDER, searchbox_border, "Search box border"),
+ DATA(A_REVERSE, POSITION_INDICATOR, position_indicator, "File position indicator"),
+ DATA(A_REVERSE, MENUBOX, menubox, "Menu box"),
+ DATA(A_REVERSE, MENUBOX_BORDER, menubox_border, "Menu box border"),
+ DATA(A_REVERSE, ITEM, item, "Item"),
+ DATA(A_NORMAL, ITEM_SELECTED, item_selected, "Selected item"),
+ DATA(A_REVERSE, TAG, tag, "Tag"),
+ DATA(A_REVERSE, TAG_SELECTED, tag_selected, "Selected tag"),
+ DATA(A_NORMAL, TAG_KEY, tag_key, "Tag key"),
+ DATA(A_BOLD, TAG_KEY_SELECTED, tag_key_selected, "Selected tag key"),
+ DATA(A_REVERSE, CHECK, check, "Check box"),
+ DATA(A_REVERSE, CHECK_SELECTED, check_selected, "Selected check box"),
+ DATA(A_REVERSE, UARROW, uarrow, "Up arrow"),
+ DATA(A_REVERSE, DARROW, darrow, "Down arrow"),
+ DATA(A_NORMAL, ITEMHELP, itemhelp, "Item help-text"),
+ DATA(A_BOLD, FORM_ACTIVE_TEXT, form_active_text, "Active form text"),
+ DATA(A_REVERSE, FORM_TEXT, form_text, "Form text"),
+ DATA(A_NORMAL, FORM_ITEM_READONLY, form_item_readonly, "Readonly form item"),
+ DATA(A_REVERSE, GAUGE, gauge, "Dialog box gauge"),
+ DATA(A_REVERSE, BORDER2, border2, "Dialog box border2"),
+ DATA(A_REVERSE, INPUTBOX_BORDER2, inputbox_border2, "Input box border2"),
+ DATA(A_REVERSE, SEARCHBOX_BORDER2, searchbox_border2, "Search box border2"),
+ DATA(A_REVERSE, MENUBOX_BORDER2, menubox_border2, "Menu box border2")
+};
+#undef DATA
+/* *INDENT-ON* */
+
+/*
+ * Maintain a list of subwindows so that we can delete them to cleanup.
+ * More important, this provides a fallback when wgetparent() is not available.
+ */
+static void
+add_subwindow(WINDOW *parent, WINDOW *child)
+{
+ DIALOG_WINDOWS *p = dlg_calloc(DIALOG_WINDOWS, 1);
+
+ if (p != 0) {
+ p->normal = parent;
+ p->shadow = child;
+ p->getc_timeout = WTIMEOUT_OFF;
+ p->next = dialog_state.all_subwindows;
+ dialog_state.all_subwindows = p;
+ }
+}
+
+static void
+del_subwindows(WINDOW *parent)
+{
+ DIALOG_WINDOWS *p = dialog_state.all_subwindows;
+ DIALOG_WINDOWS *q = 0;
+ DIALOG_WINDOWS *r;
+
+ while (p != 0) {
+ if (p->normal == parent) {
+ delwin(p->shadow);
+ r = p->next;
+ if (q == 0) {
+ dialog_state.all_subwindows = r;
+ } else {
+ q->next = r;
+ }
+ free(p);
+ p = r;
+ } else {
+ q = p;
+ p = p->next;
+ }
+ }
+}
+
+/*
+ * Display background title if it exists ...
+ */
+void
+dlg_put_backtitle(void)
+{
+
+ if (dialog_vars.backtitle != NULL) {
+ chtype attr = A_NORMAL;
+ int backwidth = dlg_count_columns(dialog_vars.backtitle);
+ int i;
+
+ dlg_attrset(stdscr, screen_attr);
+ (void) wmove(stdscr, 0, 1);
+ dlg_print_text(stdscr, dialog_vars.backtitle, COLS - 2, &attr);
+ for (i = 0; i < COLS - backwidth; i++)
+ (void) waddch(stdscr, ' ');
+ (void) wmove(stdscr, 1, 1);
+ for (i = 0; i < COLS - 2; i++)
+ (void) waddch(stdscr, dlg_boxchar(ACS_HLINE));
+ }
+
+ (void) wnoutrefresh(stdscr);
+}
+
+/*
+ * Set window to attribute 'attr'. There are more efficient ways to do this,
+ * but will not work on older/buggy ncurses versions.
+ */
+void
+dlg_attr_clear(WINDOW *win, int height, int width, chtype attr)
+{
+ int i, j;
+
+ dlg_attrset(win, attr);
+ for (i = 0; i < height; i++) {
+ (void) wmove(win, i, 0);
+ for (j = 0; j < width; j++)
+ (void) waddch(win, ' ');
+ }
+ (void) touchwin(win);
+}
+
+void
+dlg_clear(void)
+{
+ dlg_attr_clear(stdscr, LINES, COLS, screen_attr);
+}
+
+#ifdef KEY_RESIZE
+void
+_dlg_resize_cleanup(WINDOW *w)
+{
+ dlg_clear();
+ dlg_put_backtitle();
+ dlg_del_window(w);
+ dlg_mouse_free_regions();
+}
+#endif /* KEY_RESIZE */
+
+#define isprivate(s) ((s) != 0 && strstr(s, "\033[?") != 0)
+
+#define TTY_DEVICE "/dev/tty"
+
+/*
+ * If $DIALOG_TTY exists, allow the program to try to open the terminal
+ * directly when stdout is redirected. By default we require the "--stdout"
+ * option to be given, but some scripts were written making use of the
+ * behavior of dialog which tried opening the terminal anyway.
+ */
+#define dialog_tty() (dlg_getenv_num("DIALOG_TTY", (int *)0) > 0)
+
+/*
+ * Open the terminal directly. If one of stdin, stdout or stderr really points
+ * to a tty, use it. Otherwise give up and open /dev/tty.
+ */
+static int
+open_terminal(char **result, int mode)
+{
+ const char *device = TTY_DEVICE;
+ if (!isatty(fileno(stderr))
+ || (device = ttyname(fileno(stderr))) == 0) {
+ if (!isatty(fileno(stdout))
+ || (device = ttyname(fileno(stdout))) == 0) {
+ if (!isatty(fileno(stdin))
+ || (device = ttyname(fileno(stdin))) == 0) {
+ device = TTY_DEVICE;
+ }
+ }
+ }
+ *result = dlg_strclone(device);
+ return open(device, mode);
+}
+
+#if CAN_KEEP_TITE
+static int
+my_putc(int ch)
+{
+ char buffer[2];
+ int fd = fileno(dialog_state.screen_output);
+
+ buffer[0] = (char) ch;
+ return (int) write(fd, buffer, (size_t) 1);
+}
+#endif
+
+/*
+ * Do some initialization for dialog.
+ *
+ * 'input' is the real tty input of dialog. Usually it is stdin, but if
+ * --input-fd option is used, it may be anything.
+ *
+ * 'output' is where dialog will send its result. Usually it is stderr, but
+ * if --stdout or --output-fd is used, it may be anything. We are concerned
+ * mainly with the case where it happens to be the same as stdout.
+ */
+void
+init_dialog(FILE *input, FILE *output)
+{
+ int fd1, fd2;
+ char *device = 0;
+
+ setlocale(LC_ALL, "");
+
+ dialog_state.output = output;
+ if (dialog_state.tab_len == 0)
+ dialog_state.tab_len = TAB_LEN;
+ if (dialog_state.aspect_ratio == 0)
+ dialog_state.aspect_ratio = DEFAULT_ASPECT_RATIO;
+#ifdef HAVE_COLOR
+ dialog_state.use_colors = USE_COLORS; /* use colors by default? */
+ dialog_state.use_shadow = USE_SHADOW; /* shadow dialog boxes by default? */
+#endif
+
+#ifdef HAVE_RC_FILE
+ if (dlg_parse_rc() == -1) /* Read the configuration file */
+ dlg_exiterr("init_dialog: dlg_parse_rc");
+#endif
+
+ /*
+ * Some widgets (such as gauge) may read from the standard input. Pipes
+ * only connect stdout/stdin, so there is not much choice. But reading a
+ * pipe would get in the way of curses' normal reading stdin for getch.
+ *
+ * As in the --stdout (see below), reopening the terminal does not always
+ * work properly. dialog provides a --pipe-fd option for this purpose. We
+ * test that case first (differing fileno's for input/stdin). If the
+ * fileno's are equal, but we're not reading from a tty, see if we can open
+ * /dev/tty.
+ */
+ dialog_state.pipe_input = stdin;
+ if (fileno(input) != fileno(stdin)) {
+ if ((fd1 = dup(fileno(input))) >= 0
+ && (fd2 = dup(fileno(stdin))) >= 0) {
+ (void) dup2(fileno(input), fileno(stdin));
+ dialog_state.pipe_input = fdopen(fd2, "r");
+ if (fileno(stdin) != 0) /* some functions may read fd #0 */
+ (void) dup2(fileno(stdin), 0);
+ } else {
+ dlg_exiterr("cannot open tty-input");
+ }
+ close(fd1);
+ } else if (!isatty(fileno(stdin))) {
+ if ((fd1 = open_terminal(&device, O_RDONLY)) >= 0) {
+ if ((fd2 = dup(fileno(stdin))) >= 0) {
+ dialog_state.pipe_input = fdopen(fd2, "r");
+ if (freopen(device, "r", stdin) == 0)
+ dlg_exiterr("cannot open tty-input");
+ if (fileno(stdin) != 0) /* some functions may read fd #0 */
+ (void) dup2(fileno(stdin), 0);
+ }
+ close(fd1);
+ }
+ free(device);
+ }
+
+ /*
+ * If stdout is not a tty and dialog is called with the --stdout option, we
+ * have to provide for a way to write to the screen.
+ *
+ * The curses library normally writes its output to stdout, leaving stderr
+ * free for scripting. Scripts are simpler when stdout is redirected. The
+ * newterm function is useful; it allows us to specify where the output
+ * goes. Reopening the terminal is not portable since several
+ * configurations do not allow this to work properly:
+ *
+ * a) some getty implementations (and possibly broken tty drivers, e.g., on
+ * HPUX 10 and 11) cause stdin to act as if it is still in cooked mode
+ * even though results from ioctl's state that it is successfully
+ * altered to raw mode. Broken is the proper term.
+ *
+ * b) the user may not have permissions on the device, e.g., if one su's
+ * from the login user to another non-privileged user.
+ */
+ if (!isatty(fileno(stdout))
+ && (fileno(stdout) == fileno(output) || dialog_tty())) {
+ if ((fd1 = open_terminal(&device, O_WRONLY)) >= 0
+ && (dialog_state.screen_output = fdopen(fd1, "w")) != 0) {
+ if (newterm(NULL, dialog_state.screen_output, stdin) == 0) {
+ dlg_exiterr("cannot initialize curses");
+ }
+ free(device);
+ } else {
+ dlg_exiterr("cannot open tty-output");
+ }
+ } else {
+ dialog_state.screen_output = stdout;
+ (void) initscr();
+ }
+ dlg_keep_tite(dialog_state.screen_output);
+#ifdef HAVE_FLUSHINP
+ (void) flushinp();
+#endif
+ (void) keypad(stdscr, TRUE);
+ (void) cbreak();
+ (void) noecho();
+
+ if (!dialog_state.no_mouse) {
+ mouse_open();
+ }
+
+ dialog_state.screen_initialized = TRUE;
+
+#ifdef HAVE_COLOR
+ if (dialog_state.use_colors || dialog_state.use_shadow)
+ dlg_color_setup(); /* Set up colors */
+#endif
+
+ /* Set screen to screen attribute */
+ dlg_clear();
+}
+
+void
+dlg_keep_tite(FILE *output)
+{
+ if (!dialog_vars.keep_tite) {
+#if CAN_KEEP_TITE
+ /*
+ * Cancel xterm's alternate-screen mode.
+ */
+ if ((fileno(output) != fileno(stdout)
+ || isatty(fileno(output)))
+ && key_mouse != 0 /* xterm and kindred */
+ && isprivate(enter_ca_mode)
+ && isprivate(exit_ca_mode)) {
+ FILE *save = dialog_state.screen_output;
+
+ /*
+ * initscr() or newterm() already wrote enter_ca_mode as a side
+ * effect of initializing the screen. It would be nice to not even
+ * do that, but we do not really have access to the correct copy of
+ * the terminfo description until those functions have been
+ * invoked.
+ */
+ (void) refresh();
+ dialog_state.screen_output = output;
+ (void) tputs(exit_ca_mode, 0, my_putc);
+ (void) tputs(clear_screen, 0, my_putc);
+ dialog_state.screen_output = save;
+
+ /*
+ * Prevent ncurses from switching "back" to the normal screen when
+ * exiting from dialog. That would move the cursor to the original
+ * location saved in xterm. Normally curses sets the cursor
+ * position to the first line after the display, but the alternate
+ * screen switching is done after that point.
+ *
+ * Cancelling the strings altogether also works around the buggy
+ * implementation of alternate-screen in rxvt, etc., which clear
+ * more of the display than they should.
+ */
+ enter_ca_mode = 0;
+ exit_ca_mode = 0;
+ }
+#else
+ /*
+ * For other implementations, there are no useful answers:
+ * + SVr4 curses "could" support a similar approach, but the clue about
+ * xterm is absent from its terminal database.
+ * + PDCurses does not provide terminfo.
+ */
+ (void) output;
+#endif
+ }
+}
+
+#ifdef HAVE_COLOR
+static int defined_colors = 1; /* pair-0 is reserved */
+/*
+ * Setup for color display
+ */
+void
+dlg_color_setup(void)
+{
+ if (has_colors()) { /* Terminal supports color? */
+ unsigned i;
+
+ (void) start_color();
+
+#if defined(HAVE_USE_DEFAULT_COLORS)
+ use_default_colors();
+#endif
+
+#if defined(__NetBSD__) && defined(_CURSES_)
+#define C_ATTR(x,y) (((x) != 0 ? A_BOLD : 0) | COLOR_PAIR((y)))
+ /* work around bug in NetBSD curses */
+ for (i = 0; i < sizeof(dlg_color_table) /
+ sizeof(dlg_color_table[0]); i++) {
+
+ /* Initialize color pairs */
+ (void) init_pair(i + 1,
+ dlg_color_table[i].fg,
+ dlg_color_table[i].bg);
+
+ /* Setup color attributes */
+ dlg_color_table[i].atr = C_ATTR(dlg_color_table[i].hilite, i + 1);
+ }
+ defined_colors = i + 1;
+#else
+ for (i = 0; i < sizeof(dlg_color_table) /
+ sizeof(dlg_color_table[0]); i++) {
+
+ /* Initialize color pairs */
+ chtype atr = dlg_color_pair(dlg_color_table[i].fg,
+ dlg_color_table[i].bg);
+
+ atr |= (dlg_color_table[i].hilite ? A_BOLD : 0);
+#ifdef HAVE_RC_FILE2
+ atr |= (dlg_color_table[i].ul ? A_UNDERLINE : 0);
+ atr |= (dlg_color_table[i].rv ? A_REVERSE : 0);
+#endif /* HAVE_RC_FILE2 */
+
+ dlg_color_table[i].atr = atr;
+ }
+#endif
+ } else {
+ dialog_state.use_colors = FALSE;
+ dialog_state.use_shadow = FALSE;
+ }
+}
+
+int
+dlg_color_count(void)
+{
+ return TableSize(dlg_color_table);
+}
+
+/*
+ * Wrapper for getattrs(), or the more cumbersome X/Open wattr_get().
+ */
+chtype
+dlg_get_attrs(WINDOW *win)
+{
+ chtype result;
+#ifdef HAVE_GETATTRS
+ result = (chtype) getattrs(win);
+#else
+ attr_t my_result;
+ short my_pair;
+ wattr_get(win, &my_result, &my_pair, NULL);
+ result = my_result;
+#endif
+ return result;
+}
+
+/*
+ * Reuse color pairs (they are limited), returning a COLOR_PAIR() value if we
+ * have (or can) define a pair with the given color as foreground on the
+ * window's defined background.
+ */
+chtype
+dlg_color_pair(int foreground, int background)
+{
+ chtype result = 0;
+ int pair;
+ short fg, bg;
+ bool found = FALSE;
+
+ for (pair = 1; pair < defined_colors; ++pair) {
+ if (pair_content((short) pair, &fg, &bg) != ERR
+ && fg == foreground
+ && bg == background) {
+ result = (chtype) COLOR_PAIR(pair);
+ found = TRUE;
+ break;
+ }
+ }
+ if (!found && (defined_colors + 1) < COLOR_PAIRS) {
+ pair = defined_colors++;
+ (void) init_pair((short) pair, (short) foreground, (short) background);
+ result = (chtype) COLOR_PAIR(pair);
+ }
+ return result;
+}
+
+/*
+ * Reuse color pairs (they are limited), returning a COLOR_PAIR() value if we
+ * have (or can) define a pair with the given color as foreground on the
+ * window's defined background.
+ */
+static chtype
+define_color(WINDOW *win, int foreground)
+{
+ short fg, bg, background;
+ if (dialog_state.text_only) {
+ background = COLOR_BLACK;
+ } else {
+ chtype attrs = dlg_get_attrs(win);
+ int pair;
+
+ if ((pair = PAIR_NUMBER(attrs)) != 0
+ && pair_content((short) pair, &fg, &bg) != ERR) {
+ background = bg;
+ } else {
+ background = COLOR_BLACK;
+ }
+ }
+ return dlg_color_pair(foreground, background);
+}
+#endif
+
+/*
+ * End using dialog functions.
+ */
+void
+end_dialog(void)
+{
+ if (dialog_state.screen_initialized) {
+ dialog_state.screen_initialized = FALSE;
+ if (dialog_vars.erase_on_exit) {
+ /*
+ * Clear the screen to the native background color, and leave the
+ * terminal cursor at the lower-left corner of the screen.
+ */
+ werase(stdscr);
+ wrefresh(stdscr);
+ }
+ mouse_close();
+ (void) endwin();
+ (void) fflush(stdout);
+ }
+}
+
+#define ESCAPE_LEN 3
+#define isOurEscape(p) (((p)[0] == '\\') && ((p)[1] == 'Z') && ((p)[2] != 0))
+
+int
+dlg_count_real_columns(const char *text)
+{
+ int result = 0;
+ if (*text) {
+ result = dlg_count_columns(text);
+ if (result && dialog_vars.colors) {
+ int hidden = 0;
+ while (*text) {
+ if (isOurEscape(text)) {
+ hidden += ESCAPE_LEN;
+ text += ESCAPE_LEN;
+ } else {
+ ++text;
+ }
+ }
+ result -= hidden;
+ }
+ }
+ return result;
+}
+
+static int
+centered(int width, const char *string)
+{
+ int need = dlg_count_real_columns(string);
+ int left;
+
+ left = (width - need) / 2 - 1;
+ if (left < 0)
+ left = 0;
+ return left;
+}
+
+#ifdef USE_WIDE_CURSES
+static bool
+is_combining(const char *txt, int *combined)
+{
+ bool result = FALSE;
+
+ if (*combined == 0) {
+ if (UCH(*txt) >= 128) {
+ wchar_t wch;
+ mbstate_t state;
+ size_t given = strlen(txt);
+ size_t len;
+
+ memset(&state, 0, sizeof(state));
+ len = mbrtowc(&wch, txt, given, &state);
+ if ((int) len > 0 && wcwidth(wch) == 0) {
+ *combined = (int) len - 1;
+ result = TRUE;
+ }
+ }
+ } else {
+ result = TRUE;
+ *combined -= 1;
+ }
+ return result;
+}
+#endif
+
+/*
+ * Print the name (tag) or text from a DIALOG_LISTITEM, highlighting the
+ * first character if selected.
+ */
+void
+dlg_print_listitem(WINDOW *win,
+ const char *text,
+ int climit,
+ bool first,
+ int selected)
+{
+ chtype attr = A_NORMAL;
+ int limit;
+ chtype attrs[4];
+
+ if (text == 0)
+ text = "";
+
+ if (first && !dialog_vars.no_hot_list) {
+ const int *indx = dlg_index_wchars(text);
+ attrs[3] = tag_key_selected_attr;
+ attrs[2] = tag_key_attr;
+ attrs[1] = tag_selected_attr;
+ attrs[0] = tag_attr;
+
+ dlg_attrset(win, selected ? attrs[3] : attrs[2]);
+ if (*text != '\0') {
+ (void) waddnstr(win, text, indx[1]);
+
+ if ((int) strlen(text) > indx[1]) {
+ limit = dlg_limit_columns(text, climit, 1);
+ if (limit > 1) {
+ dlg_attrset(win, selected ? attrs[1] : attrs[0]);
+ (void) waddnstr(win,
+ text + indx[1],
+ indx[limit] - indx[1]);
+ }
+ }
+ }
+ } else {
+ const int *cols;
+
+ attrs[1] = item_selected_attr;
+ attrs[0] = item_attr;
+
+ cols = dlg_index_columns(text);
+ limit = dlg_limit_columns(text, climit, 0);
+
+ if (limit > 0) {
+ dlg_attrset(win, selected ? attrs[1] : attrs[0]);
+ dlg_print_text(win, text, cols[limit], &attr);
+ }
+ }
+}
+
+/*
+ * Print up to 'cols' columns from 'text', optionally rendering our escape
+ * sequence for attributes and color.
+ */
+void
+dlg_print_text(WINDOW *win, const char *txt, int cols, chtype *attr)
+{
+ int y_origin, x_origin;
+ int y_before, x_before = 0;
+ int y_after, x_after;
+ int tabbed = 0;
+ bool ended = FALSE;
+#ifdef USE_WIDE_CURSES
+ int combined = 0;
+#endif
+
+ if (dialog_state.text_only) {
+ y_origin = y_after = 0;
+ x_origin = x_after = 0;
+ } else {
+ y_after = 0;
+ x_after = 0;
+ getyx(win, y_origin, x_origin);
+ }
+ while (cols > 0 && (*txt != '\0')) {
+ bool thisTab;
+ chtype useattr;
+
+ if (dialog_vars.colors) {
+ while (isOurEscape(txt)) {
+ int code;
+
+ txt += 2;
+ switch (code = CharOf(*txt)) {
+#ifdef HAVE_COLOR
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ *attr &= ~A_COLOR;
+ *attr |= define_color(win, code - '0');
+ break;
+#endif
+ case 'B':
+ *attr &= ~A_BOLD;
+ break;
+ case 'b':
+ *attr |= A_BOLD;
+ break;
+ case 'R':
+ *attr &= ~A_REVERSE;
+ break;
+ case 'r':
+ *attr |= A_REVERSE;
+ break;
+ case 'U':
+ *attr &= ~A_UNDERLINE;
+ break;
+ case 'u':
+ *attr |= A_UNDERLINE;
+ break;
+ case 'n':
+ *attr = A_NORMAL;
+ break;
+ default:
+ break;
+ }
+ ++txt;
+ }
+ }
+ if (ended || *txt == '\n' || *txt == '\0')
+ break;
+ useattr = (*attr) & A_ATTRIBUTES;
+#ifdef HAVE_COLOR
+ /*
+ * Prevent this from making text invisible when the foreground and
+ * background colors happen to be the same, and there's no bold
+ * attribute.
+ */
+ if ((useattr & A_COLOR) != 0 && (useattr & A_BOLD) == 0) {
+ short pair = (short) PAIR_NUMBER(useattr);
+ short fg, bg;
+ if (pair_content(pair, &fg, &bg) != ERR
+ && fg == bg) {
+ useattr &= ~A_COLOR;
+ useattr |= dlg_color_pair(fg, ((bg == COLOR_BLACK)
+ ? COLOR_WHITE
+ : COLOR_BLACK));
+ }
+ }
+#endif
+ /*
+ * Write the character, using curses to tell exactly how wide it
+ * is. If it is a tab, discount that, since the caller thinks
+ * tabs are nonprinting, and curses will expand tabs to one or
+ * more blanks.
+ */
+ thisTab = (CharOf(*txt) == TAB);
+ if (dialog_state.text_only) {
+ x_before = x_after;
+ } else {
+ if (thisTab) {
+ getyx(win, y_before, x_before);
+ (void) y_before;
+ }
+ }
+ if (dialog_state.text_only) {
+ int ch = CharOf(*txt++);
+ if (thisTab) {
+ while ((x_after++) % 8) {
+ fputc(' ', dialog_state.output);
+ }
+ } else {
+ fputc(ch, dialog_state.output);
+ x_after++; /* FIXME: handle meta per locale */
+ }
+ } else {
+ (void) waddch(win, CharOf(*txt++) | useattr);
+ getyx(win, y_after, x_after);
+ }
+ if (thisTab && (y_after == y_origin))
+ tabbed += (x_after - x_before);
+ if ((y_after != y_origin) ||
+ (x_after >= (cols + tabbed + x_origin)
+#ifdef USE_WIDE_CURSES
+ && !is_combining(txt, &combined)
+#endif
+ )) {
+ ended = TRUE;
+ }
+ }
+ if (dialog_state.text_only) {
+ fputc('\n', dialog_state.output);
+ }
+}
+
+/*
+ * Print one line of the prompt in the window within the limits of the
+ * specified right margin. The line will end on a word boundary and a pointer
+ * to the start of the next line is returned, or a NULL pointer if the end of
+ * *prompt is reached.
+ */
+const char *
+dlg_print_line(WINDOW *win,
+ chtype *attr,
+ const char *prompt,
+ int lm, int rm, int *x)
+{
+ const char *wrap_ptr;
+ const char *test_ptr;
+ const char *hide_ptr = 0;
+ const int *cols = dlg_index_columns(prompt);
+ const int *indx = dlg_index_wchars(prompt);
+ int wrap_inx = 0;
+ int test_inx = 0;
+ int cur_x = lm;
+ int hidden = 0;
+ int limit = dlg_count_wchars(prompt);
+ int n;
+ int tabbed = 0;
+
+ *x = 1;
+
+ /*
+ * Set *test_ptr to the end of the line or the right margin (rm), whichever
+ * is less, and set wrap_ptr to the end of the last word in the line.
+ */
+ for (n = 0; n < limit; ++n) {
+ int ch = *(test_ptr = prompt + indx[test_inx]);
+ if (ch == '\n' || ch == '\0' || cur_x >= (rm + hidden))
+ break;
+ if (ch == TAB && n == 0) {
+ tabbed = 8; /* workaround for leading tabs */
+ } else if (isblank(UCH(ch))
+ && n != 0
+ && !isblank(UCH(prompt[indx[n - 1]]))) {
+ wrap_inx = n;
+ *x = cur_x;
+ } else if (dialog_vars.colors && isOurEscape(test_ptr)) {
+ hide_ptr = test_ptr;
+ hidden += ESCAPE_LEN;
+ n += (ESCAPE_LEN - 1);
+ }
+ cur_x = lm + tabbed + cols[n + 1];
+ if (cur_x > (rm + hidden))
+ break;
+ test_inx = n + 1;
+ }
+
+ /*
+ * If the line doesn't reach the right margin in the middle of a word, then
+ * we don't have to wrap it at the end of the previous word.
+ */
+ test_ptr = prompt + indx[test_inx];
+ if (*test_ptr == '\n' || isblank(UCH(*test_ptr)) || *test_ptr == '\0') {
+ wrap_inx = test_inx;
+ while (wrap_inx > 0 && isblank(UCH(prompt[indx[wrap_inx - 1]]))) {
+ wrap_inx--;
+ }
+ *x = lm + indx[wrap_inx];
+ } else if (*x == 1 && cur_x >= rm) {
+ /*
+ * If the line has no spaces, then wrap it anyway at the right margin
+ */
+ *x = rm;
+ wrap_inx = test_inx;
+ }
+ wrap_ptr = prompt + indx[wrap_inx];
+#ifdef USE_WIDE_CURSES
+ if (UCH(*wrap_ptr) >= 128) {
+ int combined = 0;
+ while (is_combining(wrap_ptr, &combined)) {
+ ++wrap_ptr;
+ }
+ }
+#endif
+
+ /*
+ * If we found hidden text past the last point that we will display,
+ * discount that from the displayed length.
+ */
+ if ((hide_ptr != 0) && (hide_ptr >= wrap_ptr)) {
+ hidden -= ESCAPE_LEN;
+ test_ptr = wrap_ptr;
+ while (test_ptr < wrap_ptr) {
+ if (dialog_vars.colors && isOurEscape(test_ptr)) {
+ hidden -= ESCAPE_LEN;
+ test_ptr += ESCAPE_LEN;
+ } else {
+ ++test_ptr;
+ }
+ }
+ }
+
+ /*
+ * Print the line if we have a window pointer. Otherwise this routine
+ * is just being called for sizing the window.
+ */
+ if (dialog_state.text_only || win) {
+ dlg_print_text(win, prompt, (cols[wrap_inx] - hidden), attr);
+ }
+
+ /* *x tells the calling function how long the line was */
+ if (*x == 1) {
+ *x = rm;
+ }
+
+ *x -= hidden;
+
+ /* Find the start of the next line and return a pointer to it */
+ test_ptr = wrap_ptr;
+ while (isblank(UCH(*test_ptr)))
+ test_ptr++;
+ if (*test_ptr == '\n')
+ test_ptr++;
+ dlg_finish_string(prompt);
+ return (test_ptr);
+}
+
+static void
+justify_text(WINDOW *win,
+ const char *prompt,
+ int limit_y,
+ int limit_x,
+ int *high, int *wide)
+{
+ chtype attr = A_NORMAL;
+ int x;
+ int y = MARGIN;
+ int max_x = 2;
+ int lm = (2 * MARGIN); /* left margin (box-border plus a space) */
+ int rm = limit_x; /* right margin */
+ int bm = limit_y; /* bottom margin */
+ int last_y = 0, last_x = 0;
+
+ dialog_state.text_height = 0;
+ dialog_state.text_width = 0;
+ if (dialog_state.text_only || win) {
+ rm -= (2 * MARGIN);
+ bm -= (2 * MARGIN);
+ }
+ if (prompt == 0)
+ prompt = "";
+
+ if (win != 0)
+ getyx(win, last_y, last_x);
+ while (y <= bm && *prompt) {
+ x = lm;
+
+ if (*prompt == '\n') {
+ while (*prompt == '\n' && y < bm) {
+ if (*(prompt + 1) != '\0') {
+ ++y;
+ if (win != 0)
+ (void) wmove(win, y, lm);
+ }
+ prompt++;
+ }
+ } else if (win != 0)
+ (void) wmove(win, y, lm);
+
+ if (*prompt) {
+ prompt = dlg_print_line(win, &attr, prompt, lm, rm, &x);
+ if (win != 0)
+ getyx(win, last_y, last_x);
+ }
+ if (*prompt) {
+ ++y;
+ if (win != 0)
+ (void) wmove(win, y, lm);
+ }
+ max_x = MAX(max_x, x);
+ }
+ /* Move back to the last position after drawing prompt, for msgbox. */
+ if (win != 0)
+ (void) wmove(win, last_y, last_x);
+
+ /* Set the final height and width for the calling function */
+ if (high != 0)
+ *high = y;
+ if (wide != 0)
+ *wide = max_x;
+}
+
+/*
+ * Print a string of text in a window, automatically wrap around to the next
+ * line if the string is too long to fit on one line. Note that the string may
+ * contain embedded newlines.
+ */
+void
+dlg_print_autowrap(WINDOW *win, const char *prompt, int height, int width)
+{
+ justify_text(win, prompt,
+ height,
+ width,
+ (int *) 0, (int *) 0);
+}
+
+/*
+ * Display the message in a scrollable window. Actually the way it works is
+ * that we create a "tall" window of the proper width, let the text wrap within
+ * that, and copy a slice of the result to the dialog.
+ *
+ * It works for ncurses. Other curses implementations show only blanks (Tru64)
+ * or garbage (NetBSD).
+ */
+int
+dlg_print_scrolled(WINDOW *win,
+ const char *prompt,
+ int offset,
+ int height,
+ int width,
+ int pauseopt)
+{
+ int oldy, oldx;
+ int last = 0;
+
+ (void) pauseopt; /* used only for ncurses */
+
+ getyx(win, oldy, oldx);
+#ifdef NCURSES_VERSION
+ if (pauseopt) {
+ int wide = width - (2 * MARGIN);
+ int high = LINES;
+ int len;
+ WINDOW *dummy;
+
+#if defined(NCURSES_VERSION_PATCH) && NCURSES_VERSION_PATCH >= 20040417
+ /*
+ * If we're not limited by the screensize, allow text to possibly be
+ * one character per line.
+ */
+ if ((len = dlg_count_columns(prompt)) > high)
+ high = len;
+#endif
+ dummy = newwin(high, width, 0, 0);
+ if (dummy == 0) {
+ dlg_attrset(win, dialog_attr);
+ dlg_print_autowrap(win, prompt, height + 1 + (3 * MARGIN), width);
+ last = 0;
+ } else {
+ int y, x;
+
+ wbkgdset(dummy, dialog_attr | ' ');
+ dlg_attrset(dummy, dialog_attr);
+ werase(dummy);
+ dlg_print_autowrap(dummy, prompt, high, width);
+ getyx(dummy, y, x);
+ (void) x;
+
+ copywin(dummy, /* srcwin */
+ win, /* dstwin */
+ offset + MARGIN, /* sminrow */
+ MARGIN, /* smincol */
+ MARGIN, /* dminrow */
+ MARGIN, /* dmincol */
+ height, /* dmaxrow */
+ wide, /* dmaxcol */
+ FALSE);
+
+ delwin(dummy);
+
+ /* if the text is incomplete, or we have scrolled, show the percentage */
+ if (y > 0 && wide > 4) {
+ int percent = (int) ((height + offset) * 100.0 / y);
+
+ if (percent < 0)
+ percent = 0;
+ if (percent > 100)
+ percent = 100;
+
+ if (offset != 0 || percent != 100) {
+ char buffer[5];
+
+ dlg_attrset(win, position_indicator_attr);
+ (void) wmove(win, MARGIN + height, wide - 4);
+ (void) sprintf(buffer, "%d%%", percent);
+ (void) waddstr(win, buffer);
+ if ((len = (int) strlen(buffer)) < 4) {
+ dlg_attrset(win, border_attr);
+ whline(win, dlg_boxchar(ACS_HLINE), 4 - len);
+ }
+ }
+ }
+ last = (y - height);
+ }
+ } else
+#endif
+ {
+ (void) offset;
+ dlg_attrset(win, dialog_attr);
+ dlg_print_autowrap(win, prompt, height + 1 + (3 * MARGIN), width);
+ last = 0;
+ }
+ wmove(win, oldy, oldx);
+ return last;
+}
+
+int
+dlg_check_scrolled(int key, int last, int page, bool * show, int *offset)
+{
+ int code = 0;
+
+ *show = FALSE;
+
+ switch (key) {
+ case DLGK_PAGE_FIRST:
+ if (*offset > 0) {
+ *offset = 0;
+ *show = TRUE;
+ }
+ break;
+ case DLGK_PAGE_LAST:
+ if (*offset < last) {
+ *offset = last;
+ *show = TRUE;
+ }
+ break;
+ case DLGK_GRID_UP:
+ if (*offset > 0) {
+ --(*offset);
+ *show = TRUE;
+ }
+ break;
+ case DLGK_GRID_DOWN:
+ if (*offset < last) {
+ ++(*offset);
+ *show = TRUE;
+ }
+ break;
+ case DLGK_PAGE_PREV:
+ if (*offset > 0) {
+ *offset -= page;
+ if (*offset < 0)
+ *offset = 0;
+ *show = TRUE;
+ }
+ break;
+ case DLGK_PAGE_NEXT:
+ if (*offset < last) {
+ *offset += page;
+ if (*offset > last)
+ *offset = last;
+ *show = TRUE;
+ }
+ break;
+ default:
+ code = -1;
+ break;
+ }
+ return code;
+}
+
+/*
+ * Calculate the window size for preformatted text. This will calculate box
+ * dimensions that are at or close to the specified aspect ratio for the prompt
+ * string with all spaces and newlines preserved and additional newlines added
+ * as necessary.
+ */
+static void
+auto_size_preformatted(const char *prompt, int *height, int *width)
+{
+ int high = 0, wide = 0;
+ float car; /* Calculated Aspect Ratio */
+ int max_y = SLINES - 1;
+ int max_x = SCOLS - 2;
+ int max_width = max_x;
+ int ar = dialog_state.aspect_ratio;
+
+ /* Get the initial dimensions */
+ justify_text((WINDOW *) 0, prompt, max_y, max_x, &high, &wide);
+ car = (float) (wide / high);
+
+ *height = high;
+ *width = wide;
+}
+
+/*
+ * Find the length of the longest "word" in the given string. By setting the
+ * widget width at least this long, we can avoid splitting a word on the
+ * margin.
+ */
+static int
+longest_word(const char *string)
+{
+ int result = 0;
+
+ while (*string != '\0') {
+ int length = 0;
+ while (*string != '\0' && !isspace(UCH(*string))) {
+ length++;
+ string++;
+ }
+ result = MAX(result, length);
+ if (*string != '\0')
+ string++;
+ }
+ return result;
+}
+
+/*
+ * if (height or width == -1) Maximize()
+ * if (height or width == 0), justify and return actual limits.
+ */
+static void
+real_auto_size(const char *title,
+ const char *prompt,
+ int *height, int *width,
+ int boxlines, int mincols)
+{
+ int x = (dialog_vars.begin_set ? dialog_vars.begin_x : 2);
+ int y = (dialog_vars.begin_set ? dialog_vars.begin_y : 1);
+ int title_length = title ? dlg_count_columns(title) : 0;
+ int high;
+ int save_high = *height;
+ int save_wide = *width;
+ int max_high;
+ int max_wide;
+
+ if (prompt == 0) {
+ if (*height == 0)
+ *height = -1;
+ if (*width == 0)
+ *width = -1;
+ }
+
+ max_high = (*height < 0);
+ max_wide = (*width < 0);
+
+ if (*height > 0) {
+ high = *height;
+ } else {
+ high = SLINES - y;
+ }
+
+ if (*width <= 0) {
+ int wide;
+
+ if (prompt != 0) {
+ wide = MAX(title_length, mincols);
+ if (strchr(prompt, '\n') == 0) {
+ double val = (dialog_state.aspect_ratio *
+ dlg_count_real_columns(prompt));
+ double xxx = sqrt(val);
+ int tmp = (int) xxx;
+ wide = MAX(wide, tmp);
+ wide = MAX(wide, longest_word(prompt));
+ justify_text((WINDOW *) 0, prompt, high, wide, height, width);
+ } else {
+ auto_size_preformatted(prompt, height, width);
+ }
+ } else {
+ wide = SCOLS - x;
+ justify_text((WINDOW *) 0, prompt, high, wide, height, width);
+ }
+ }
+
+ if (*width < title_length) {
+ justify_text((WINDOW *) 0, prompt, high, title_length, height, width);
+ *width = title_length;
+ }
+
+ dialog_state.text_height = *height;
+ dialog_state.text_width = *width;
+
+ if (*width < mincols && save_wide == 0)
+ *width = mincols;
+ if (prompt != 0) {
+ *width += ((2 * MARGIN) + SHADOW_COLS);
+ *height += boxlines + (2 * MARGIN);
+ }
+
+ if (save_high > 0)
+ *height = save_high;
+ if (save_wide > 0)
+ *width = save_wide;
+
+ if (max_high)
+ *height = SLINES - (dialog_vars.begin_set ? dialog_vars.begin_y : 0);
+ if (max_wide)
+ *width = SCOLS - (dialog_vars.begin_set ? dialog_vars.begin_x : 0);
+}
+
+/* End of real_auto_size() */
+
+void
+dlg_auto_size(const char *title,
+ const char *prompt,
+ int *height,
+ int *width,
+ int boxlines,
+ int mincols)
+{
+ DLG_TRACE(("# dlg_auto_size(%d,%d) limits %d,%d\n",
+ *height, *width,
+ boxlines, mincols));
+
+ real_auto_size(title, prompt, height, width, boxlines, mincols);
+
+ if (*width > SCOLS) {
+ (*height)++;
+ *width = SCOLS;
+ }
+
+ if (*height > SLINES) {
+ *height = SLINES;
+ }
+ DLG_TRACE(("# ...dlg_auto_size(%d,%d) also %d,%d\n",
+ *height, *width,
+ dialog_state.text_height, dialog_state.text_width));
+}
+
+/*
+ * if (height or width == -1) Maximize()
+ * if (height or width == 0)
+ * height=MIN(SLINES, num.lines in fd+n);
+ * width=MIN(SCOLS, MAX(longer line+n, mincols));
+ */
+void
+dlg_auto_sizefile(const char *title,
+ const char *file,
+ int *height,
+ int *width,
+ int boxlines,
+ int mincols)
+{
+ int count = 0;
+ int len = title ? dlg_count_columns(title) : 0;
+ int nc = 4;
+ int numlines = 2;
+ FILE *fd;
+
+ /* Open input file for reading */
+ if ((fd = fopen(file, "rb")) == NULL)
+ dlg_exiterr("dlg_auto_sizefile: Cannot open input file %s", file);
+
+ if ((*height == -1) || (*width == -1)) {
+ *height = SLINES - (dialog_vars.begin_set ? dialog_vars.begin_y : 0);
+ *width = SCOLS - (dialog_vars.begin_set ? dialog_vars.begin_x : 0);
+ }
+ if ((*height != 0) && (*width != 0)) {
+ (void) fclose(fd);
+ if (*width > SCOLS)
+ *width = SCOLS;
+ if (*height > SLINES)
+ *height = SLINES;
+ return;
+ }
+
+ while (!feof(fd)) {
+ int ch;
+ long offset;
+
+ if (ferror(fd))
+ break;
+
+ offset = 0;
+ while (((ch = getc(fd)) != '\n') && !feof(fd)) {
+ if ((ch == TAB) && (dialog_vars.tab_correct)) {
+ offset += dialog_state.tab_len - (offset % dialog_state.tab_len);
+ } else {
+ offset++;
+ }
+ }
+
+ if (offset > len)
+ len = (int) offset;
+
+ count++;
+ }
+
+ /* now 'count' has the number of lines of fd and 'len' the max length */
+
+ *height = MIN(SLINES, count + numlines + boxlines);
+ *width = MIN(SCOLS, MAX((len + nc), mincols));
+ /* here width and height can be maximized if > SCOLS|SLINES because
+ textbox-like widgets don't put all <file> on the screen.
+ Msgbox-like widget instead have to put all <text> correctly. */
+
+ (void) fclose(fd);
+}
+
+/*
+ * Draw a rectangular box with line drawing characters.
+ *
+ * borderchar is used to color the upper/left edges.
+ *
+ * boxchar is used to color the right/lower edges. It also is fill-color used
+ * for the box contents.
+ *
+ * Normally, if you are drawing a scrollable box, use menubox_border_attr for
+ * boxchar, and menubox_attr for borderchar since the scroll-arrows are drawn
+ * with menubox_attr at the top, and menubox_border_attr at the bottom. That
+ * also (given the default color choices) produces a recessed effect.
+ *
+ * If you want a raised effect (and are not going to use the scroll-arrows),
+ * reverse this choice.
+ */
+void
+dlg_draw_box2(WINDOW *win, int y, int x, int height, int width,
+ chtype boxchar, chtype borderchar, chtype borderchar2)
+{
+ int i, j;
+ chtype save = dlg_get_attrs(win);
+
+ dlg_attrset(win, 0);
+ for (i = 0; i < height; i++) {
+ (void) wmove(win, y + i, x);
+ for (j = 0; j < width; j++)
+ if (!i && !j)
+ (void) waddch(win, borderchar | dlg_boxchar(ACS_ULCORNER));
+ else if (i == height - 1 && !j)
+ (void) waddch(win, borderchar | dlg_boxchar(ACS_LLCORNER));
+ else if (!i && j == width - 1)
+ (void) waddch(win, borderchar2 | dlg_boxchar(ACS_URCORNER));
+ else if (i == height - 1 && j == width - 1)
+ (void) waddch(win, borderchar2 | dlg_boxchar(ACS_LRCORNER));
+ else if (!i)
+ (void) waddch(win, borderchar | dlg_boxchar(ACS_HLINE));
+ else if (i == height - 1)
+ (void) waddch(win, borderchar2 | dlg_boxchar(ACS_HLINE));
+ else if (!j)
+ (void) waddch(win, borderchar | dlg_boxchar(ACS_VLINE));
+ else if (j == width - 1)
+ (void) waddch(win, borderchar2 | dlg_boxchar(ACS_VLINE));
+ else
+ (void) waddch(win, boxchar | ' ');
+ }
+ dlg_attrset(win, save);
+}
+
+void
+dlg_draw_box(WINDOW *win, int y, int x, int height, int width,
+ chtype boxchar, chtype borderchar)
+{
+ dlg_draw_box2(win, y, x, height, width, boxchar, borderchar, boxchar);
+}
+
+/*
+ * Search the given 'list' for the given window 'win'. Typically 'win' is an
+ * input-window, i.e., a window where we might use wgetch.
+ *
+ * The all-windows list has normal- and shadow-windows. Since we never use the
+ * shadow as an input window, normally we just look for the normal-window.
+ *
+ * However, the all-subwindows list stores parent/child windows rather than
+ * normal/shadow windows. When searching that list, we look for the child
+ * window (in the .shadow field).
+ */
+static DIALOG_WINDOWS *
+find_window(DIALOG_WINDOWS * list, WINDOW *win, bool normal)
+{
+ DIALOG_WINDOWS *result = 0;
+ DIALOG_WINDOWS *p;
+
+ for (p = list; p != 0; p = p->next) {
+ WINDOW *check = normal ? p->normal : p->shadow;
+ if (check == win) {
+ result = p;
+ break;
+ }
+ }
+ return result;
+}
+
+#define SearchTopWindows(win) find_window(dialog_state.all_windows, win, TRUE)
+#define SearchSubWindows(win) find_window(dialog_state.all_subwindows, win, FALSE)
+
+/*
+ * Check for the existence of a window, e.g., when used for input or updating
+ * the display. This is used in dlg_getc() and related functions, to guard
+ * against an asynchronous window-deletion that might invalidate the input
+ * window used in dlg_getc().
+ */
+DIALOG_WINDOWS *
+_dlg_find_window(WINDOW *win)
+{
+ DIALOG_WINDOWS *result = 0;
+
+ if ((result = SearchTopWindows(win)) == NULL)
+ result = SearchSubWindows(win);
+ return result;
+}
+
+#ifdef HAVE_COLOR
+/*
+ * If we have wchgat(), use that for updating shadow attributes, to work with
+ * wide-character data.
+ */
+
+/*
+ * Check if the given point is "in" the given window. If so, return the window
+ * pointer, otherwise null.
+ */
+static WINDOW *
+in_window(WINDOW *win, int y, int x)
+{
+ WINDOW *result = 0;
+ int y_base = getbegy(win);
+ int x_base = getbegx(win);
+ int y_last = getmaxy(win) + y_base;
+ int x_last = getmaxx(win) + x_base;
+
+ if (y >= y_base && y <= y_last && x >= x_base && x <= x_last)
+ result = win;
+ return result;
+}
+
+static WINDOW *
+window_at_cell(DIALOG_WINDOWS * dw, int y, int x)
+{
+ WINDOW *result = 0;
+ DIALOG_WINDOWS *p;
+ int y_want = y + getbegy(dw->shadow);
+ int x_want = x + getbegx(dw->shadow);
+
+ for (p = dialog_state.all_windows; p != 0; p = p->next) {
+ if (dw->normal != p->normal
+ && dw->shadow != p->normal
+ && (result = in_window(p->normal, y_want, x_want)) != 0) {
+ break;
+ }
+ }
+ if (result == 0) {
+ result = stdscr;
+ }
+ return result;
+}
+
+static bool
+in_shadow(WINDOW *normal, WINDOW *shadow, int y, int x)
+{
+ bool result = FALSE;
+ int ybase = getbegy(normal);
+ int ylast = getmaxy(normal) + ybase;
+ int xbase = getbegx(normal);
+ int xlast = getmaxx(normal) + xbase;
+
+ y += getbegy(shadow);
+ x += getbegx(shadow);
+
+ if (y >= ybase + SHADOW_ROWS
+ && y < ylast + SHADOW_ROWS
+ && x >= xlast
+ && x < xlast + SHADOW_COLS) {
+ /* in the right-side */
+ result = TRUE;
+ } else if (y >= ylast
+ && y < ylast + SHADOW_ROWS
+ && x >= ybase + SHADOW_COLS
+ && x < ylast + SHADOW_COLS) {
+ /* check the bottom */
+ result = TRUE;
+ }
+
+ return result;
+}
+
+/*
+ * When erasing a shadow, check each cell to make sure that it is not part of
+ * another box's shadow. This is a little complicated since most shadows are
+ * merged onto stdscr.
+ */
+static bool
+last_shadow(DIALOG_WINDOWS * dw, int y, int x)
+{
+ DIALOG_WINDOWS *p;
+ bool result = TRUE;
+
+ for (p = dialog_state.all_windows; p != 0; p = p->next) {
+ if (p->normal != dw->normal
+ && in_shadow(p->normal, dw->shadow, y, x)) {
+ result = FALSE;
+ break;
+ }
+ }
+ return result;
+}
+
+static void
+repaint_cell(DIALOG_WINDOWS * dw, bool draw, int y, int x)
+{
+ WINDOW *win = dw->shadow;
+ WINDOW *cellwin;
+ int y2, x2;
+
+ if ((cellwin = window_at_cell(dw, y, x)) != 0
+ && (draw || last_shadow(dw, y, x))
+ && (y2 = (y + getbegy(win) - getbegy(cellwin))) >= 0
+ && (x2 = (x + getbegx(win) - getbegx(cellwin))) >= 0
+ && wmove(cellwin, y2, x2) != ERR) {
+ chtype the_cell = dlg_get_attrs(cellwin);
+ chtype the_attr = (draw ? shadow_attr : the_cell);
+
+ if (winch(cellwin) & A_ALTCHARSET) {
+ the_attr |= A_ALTCHARSET;
+ }
+#if USE_WCHGAT
+ wchgat(cellwin, 1,
+ the_attr & (chtype) (~A_COLOR),
+ (short) PAIR_NUMBER(the_attr),
+ NULL);
+#else
+ {
+ chtype the_char = ((winch(cellwin) & A_CHARTEXT) | the_attr);
+ (void) waddch(cellwin, the_char);
+ }
+#endif
+ wnoutrefresh(cellwin);
+ }
+}
+
+#define RepaintCell(dw, draw, y, x) repaint_cell(dw, draw, y, x)
+
+static void
+repaint_shadow(DIALOG_WINDOWS * dw, bool draw, int y, int x, int height, int width)
+{
+ if (UseShadow(dw)) {
+ int i, j;
+
+#if !USE_WCHGAT
+ chtype save = dlg_get_attrs(dw->shadow);
+ dlg_attrset(dw->shadow, draw ? shadow_attr : screen_attr);
+#endif
+ for (i = 0; i < SHADOW_ROWS; ++i) {
+ for (j = 0; j < width; ++j) {
+ RepaintCell(dw, draw, i + y + height, j + x + SHADOW_COLS);
+ }
+ }
+ for (i = 0; i < height; i++) {
+ for (j = 0; j < SHADOW_COLS; ++j) {
+ RepaintCell(dw, draw, i + y + SHADOW_ROWS, j + x + width);
+ }
+ }
+ (void) wnoutrefresh(dw->shadow);
+#if !USE_WCHGAT
+ dlg_attrset(dw->shadow, save);
+#endif
+ }
+}
+
+/*
+ * Draw a shadow on the parent window corresponding to the right- and
+ * bottom-edge of the child window, to give a 3-dimensional look.
+ */
+static void
+draw_childs_shadow(DIALOG_WINDOWS * dw)
+{
+ if (UseShadow(dw)) {
+ repaint_shadow(dw,
+ TRUE,
+ getbegy(dw->normal) - getbegy(dw->shadow),
+ getbegx(dw->normal) - getbegx(dw->shadow),
+ getmaxy(dw->normal),
+ getmaxx(dw->normal));
+ }
+}
+
+/*
+ * Erase a shadow on the parent window corresponding to the right- and
+ * bottom-edge of the child window.
+ */
+static void
+erase_childs_shadow(DIALOG_WINDOWS * dw)
+{
+ if (UseShadow(dw)) {
+ repaint_shadow(dw,
+ FALSE,
+ getbegy(dw->normal) - getbegy(dw->shadow),
+ getbegx(dw->normal) - getbegx(dw->shadow),
+ getmaxy(dw->normal),
+ getmaxx(dw->normal));
+ }
+}
+
+/*
+ * Draw shadows along the right and bottom edge to give a more 3D look
+ * to the boxes.
+ */
+void
+dlg_draw_shadow(WINDOW *win, int y, int x, int height, int width)
+{
+ repaint_shadow(SearchTopWindows(win), TRUE, y, x, height, width);
+}
+#endif /* HAVE_COLOR */
+
+/*
+ * Allow shell scripts to remap the exit codes so they can distinguish ESC
+ * from ERROR.
+ */
+void
+dlg_exit(int code)
+{
+ /* *INDENT-OFF* */
+ static const struct {
+ int code;
+ const char *name;
+ } table[] = {
+ { DLG_EXIT_CANCEL, "DIALOG_CANCEL" },
+ { DLG_EXIT_ERROR, "DIALOG_ERROR" },
+ { DLG_EXIT_ESC, "DIALOG_ESC" },
+ { DLG_EXIT_EXTRA, "DIALOG_EXTRA" },
+ { DLG_EXIT_HELP, "DIALOG_HELP" },
+ { DLG_EXIT_OK, "DIALOG_OK" },
+ { DLG_EXIT_ITEM_HELP, "DIALOG_ITEM_HELP" },
+ { DLG_EXIT_TIMEOUT, "DIALOG_TIMEOUT" },
+ };
+ /* *INDENT-ON* */
+
+ unsigned n;
+ bool overridden = FALSE;
+
+ retry:
+ for (n = 0; n < TableSize(table); n++) {
+ if (table[n].code == code) {
+ if (dlg_getenv_num(table[n].name, &code)) {
+ overridden = TRUE;
+ }
+ break;
+ }
+ }
+
+ /*
+ * Prior to 2004/12/19, a widget using --item-help would exit with "OK"
+ * if the help button were selected. Now we want to exit with "HELP",
+ * but allow the environment variable to override.
+ */
+ if (code == DLG_EXIT_ITEM_HELP && !overridden) {
+ code = DLG_EXIT_HELP;
+ goto retry;
+ }
+#ifdef HAVE_DLG_TRACE
+ dlg_trace((const char *) 0); /* close it */
+#endif
+
+#ifdef NO_LEAKS
+ _dlg_inputstr_leaks();
+#if defined(NCURSES_VERSION) && (defined(HAVE_EXIT_CURSES) || defined(HAVE__NC_FREE_AND_EXIT))
+ exit_curses(code);
+#endif
+#endif
+
+ if (dialog_state.input == stdin) {
+ exit(code);
+ } else {
+ /*
+ * Just in case of using --input-fd option, do not
+ * call atexit functions of ncurses which may hang.
+ */
+ if (dialog_state.input) {
+ fclose(dialog_state.input);
+ dialog_state.input = 0;
+ }
+ if (dialog_state.pipe_input) {
+ if (dialog_state.pipe_input != stdin) {
+ fclose(dialog_state.pipe_input);
+ dialog_state.pipe_input = 0;
+ }
+ }
+ _exit(code);
+ }
+}
+
+#define DATA(name) { DLG_EXIT_ ## name, #name }
+/* *INDENT-OFF* */
+static struct {
+ int code;
+ const char *name;
+} exit_codenames[] = {
+ DATA(ESC),
+ DATA(UNKNOWN),
+ DATA(ERROR),
+ DATA(OK),
+ DATA(CANCEL),
+ DATA(HELP),
+ DATA(EXTRA),
+ DATA(ITEM_HELP),
+};
+#undef DATA
+/* *INDENT-ON* */
+
+const char *
+dlg_exitcode2s(int code)
+{
+ const char *result = "?";
+ size_t n;
+
+ for (n = 0; n < TableSize(exit_codenames); ++n) {
+ if (exit_codenames[n].code == code) {
+ result = exit_codenames[n].name;
+ break;
+ }
+ }
+ return result;
+}
+
+int
+dlg_exitname2n(const char *name)
+{
+ int result = DLG_EXIT_UNKNOWN;
+ size_t n;
+
+ for (n = 0; n < TableSize(exit_codenames); ++n) {
+ if (!dlg_strcmp(exit_codenames[n].name, name)) {
+ result = exit_codenames[n].code;
+ break;
+ }
+ }
+ return result;
+}
+
+/* quit program killing all tailbg */
+void
+dlg_exiterr(const char *fmt, ...)
+{
+ int retval;
+ va_list ap;
+
+ end_dialog();
+
+ (void) fputc('\n', stderr);
+ va_start(ap, fmt);
+ (void) vfprintf(stderr, fmt, ap);
+ va_end(ap);
+ (void) fputc('\n', stderr);
+
+#ifdef HAVE_DLG_TRACE
+ va_start(ap, fmt);
+ dlg_trace_msg("## Error: ");
+ dlg_trace_va_msg(fmt, ap);
+ va_end(ap);
+#endif
+
+ dlg_killall_bg(&retval);
+
+ (void) fflush(stderr);
+ (void) fflush(stdout);
+ dlg_exit(strcmp(fmt, "timeout") == 0 ? DLG_EXIT_TIMEOUT : DLG_EXIT_ERROR);
+}
+
+/*
+ * Get a string from the environment, rejecting those which are entirely blank.
+ */
+char *
+dlg_getenv_str(const char *name)
+{
+ char *result = getenv(name);
+ if (result != NULL) {
+ while (*result != '\0' && isspace(UCH(*result)))
+ ++result;
+ if (*result == '\0')
+ result = NULL;
+ }
+ return result;
+}
+
+/*
+ * Get a number from the environment:
+ * + If the caller provides a pointer in the second parameter, return
+ * success/failure for the function return, and the actual value via the
+ * pointer. Use this for decoding arbitrary numbers, e.g., negative or zero.
+ * + If the caller does not provide a pointer, return the decoded value for
+ * the function-return. Use this when only values greater than zero are
+ * useful.
+ */
+int
+dlg_getenv_num(const char *name, int *value)
+{
+ int result = 0;
+ char *data = getenv(name);
+ if (data != NULL) {
+ char *temp = NULL;
+ long check = strtol(data, &temp, 0);
+ if (temp != 0 && temp != data && *temp == '\0') {
+ result = (int) check;
+ if (value != NULL) {
+ *value = result;
+ result = 1;
+ }
+ }
+ }
+ return result;
+}
+
+void
+dlg_beeping(void)
+{
+ if (dialog_vars.beep_signal) {
+ (void) beep();
+ dialog_vars.beep_signal = 0;
+ }
+}
+
+void
+dlg_print_size(int height, int width)
+{
+ if (dialog_vars.print_siz) {
+ fprintf(dialog_state.output, "Size: %d, %d\n", height, width);
+ DLG_TRACE(("# print size: %dx%d\n", height, width));
+ }
+}
+
+void
+dlg_ctl_size(int height, int width)
+{
+ if (dialog_vars.size_err) {
+ if ((width > COLS) || (height > LINES)) {
+ dlg_exiterr("Window too big. (height, width) = (%d, %d). Max allowed (%d, %d).",
+ height, width, LINES, COLS);
+ }
+#ifdef HAVE_COLOR
+ else if ((dialog_state.use_shadow)
+ && ((width > SCOLS || height > SLINES))) {
+ if ((width <= COLS) && (height <= LINES)) {
+ /* try again, without shadows */
+ dialog_state.use_shadow = 0;
+ } else {
+ dlg_exiterr("Window+Shadow too big. (height, width) = (%d, %d). Max allowed (%d, %d).",
+ height, width, SLINES, SCOLS);
+ }
+ }
+#endif
+ }
+}
+
+/*
+ * If the --tab-correct was not selected, convert tabs to single spaces.
+ */
+void
+dlg_tab_correct_str(char *prompt)
+{
+ char *ptr;
+
+ if (dialog_vars.tab_correct) {
+ while ((ptr = strchr(prompt, TAB)) != NULL) {
+ *ptr = ' ';
+ prompt = ptr;
+ }
+ }
+}
+
+void
+dlg_calc_listh(int *height, int *list_height, int item_no)
+{
+ /* calculate new height and list_height */
+ int rows = SLINES - (dialog_vars.begin_set ? dialog_vars.begin_y : 0);
+ if (rows - (*height) > 0) {
+ if (rows - (*height) > item_no)
+ *list_height = item_no;
+ else
+ *list_height = rows - (*height);
+ }
+ (*height) += (*list_height);
+}
+
+/* obsolete */
+int
+dlg_calc_listw(int item_no, char **items, int group)
+{
+ int i, len1 = 0, len2 = 0;
+
+ for (i = 0; i < (item_no * group); i += group) {
+ int n;
+
+ if ((n = dlg_count_columns(items[i])) > len1)
+ len1 = n;
+ if ((n = dlg_count_columns(items[i + 1])) > len2)
+ len2 = n;
+ }
+ return len1 + len2;
+}
+
+int
+dlg_calc_list_width(int item_no, DIALOG_LISTITEM * items)
+{
+ int n, i, len1 = 0, len2 = 0;
+ int bits = ((dialog_vars.no_tags ? 1 : 0)
+ + (dialog_vars.no_items ? 2 : 0));
+
+ for (i = 0; i < item_no; ++i) {
+ switch (bits) {
+ case 0:
+ /* FALLTHRU */
+ case 1:
+ if ((n = dlg_count_columns(items[i].name)) > len1)
+ len1 = n;
+ if ((n = dlg_count_columns(items[i].text)) > len2)
+ len2 = n;
+ break;
+ case 2:
+ /* FALLTHRU */
+ case 3:
+ if ((n = dlg_count_columns(items[i].name)) > len1)
+ len1 = n;
+ break;
+ }
+ }
+ return len1 + len2;
+}
+
+char *
+dlg_strempty(void)
+{
+ static char empty[] = "";
+ return empty;
+}
+
+char *
+dlg_strclone(const char *cprompt)
+{
+ char *prompt = 0;
+ if (cprompt != 0) {
+ prompt = dlg_malloc(char, strlen(cprompt) + 1);
+ assert_ptr(prompt, "dlg_strclone");
+ strcpy(prompt, cprompt);
+ }
+ return prompt;
+}
+
+chtype
+dlg_asciibox(chtype ch)
+{
+ chtype result = 0;
+
+ if (ch == ACS_ULCORNER)
+ result = '+';
+ else if (ch == ACS_LLCORNER)
+ result = '+';
+ else if (ch == ACS_URCORNER)
+ result = '+';
+ else if (ch == ACS_LRCORNER)
+ result = '+';
+ else if (ch == ACS_HLINE)
+ result = '-';
+ else if (ch == ACS_VLINE)
+ result = '|';
+ else if (ch == ACS_LTEE)
+ result = '+';
+ else if (ch == ACS_RTEE)
+ result = '+';
+ else if (ch == ACS_UARROW)
+ result = '^';
+ else if (ch == ACS_DARROW)
+ result = 'v';
+
+ return result;
+}
+
+chtype
+dlg_boxchar(chtype ch)
+{
+ chtype result = dlg_asciibox(ch);
+
+ if (result != 0) {
+ if (dialog_vars.ascii_lines)
+ ch = result;
+ else if (dialog_vars.no_lines)
+ ch = ' ';
+ }
+ return ch;
+}
+
+int
+dlg_box_x_ordinate(int width)
+{
+ int x;
+
+ if (dialog_vars.begin_set == 1) {
+ x = dialog_vars.begin_x;
+ } else {
+ /* center dialog box on screen unless --begin-set */
+ x = (SCOLS - width) / 2;
+ }
+ return x;
+}
+
+int
+dlg_box_y_ordinate(int height)
+{
+ int y;
+
+ if (dialog_vars.begin_set == 1) {
+ y = dialog_vars.begin_y;
+ } else {
+ /* center dialog box on screen unless --begin-set */
+ y = (SLINES - height) / 2;
+ }
+ return y;
+}
+
+void
+dlg_draw_title(WINDOW *win, const char *title)
+{
+ if (title != NULL) {
+ chtype attr = A_NORMAL;
+ chtype save = dlg_get_attrs(win);
+ int x = centered(getmaxx(win), title);
+
+ dlg_attrset(win, title_attr);
+ wmove(win, 0, x);
+ dlg_print_text(win, title, getmaxx(win) - x, &attr);
+ dlg_attrset(win, save);
+ dlg_finish_string(title);
+ }
+}
+
+void
+dlg_draw_bottom_box2(WINDOW *win, chtype on_left, chtype on_right, chtype on_inside)
+{
+ int width = getmaxx(win);
+ int height = getmaxy(win);
+ int i;
+
+ dlg_attrset(win, on_left);
+ (void) wmove(win, height - 3, 0);
+ (void) waddch(win, dlg_boxchar(ACS_LTEE));
+ for (i = 0; i < width - 2; i++)
+ (void) waddch(win, dlg_boxchar(ACS_HLINE));
+ dlg_attrset(win, on_right);
+ (void) waddch(win, dlg_boxchar(ACS_RTEE));
+ dlg_attrset(win, on_inside);
+ (void) wmove(win, height - 2, 1);
+ for (i = 0; i < width - 2; i++)
+ (void) waddch(win, ' ');
+}
+
+void
+dlg_draw_bottom_box(WINDOW *win)
+{
+ dlg_draw_bottom_box2(win, border_attr, dialog_attr, dialog_attr);
+}
+
+/*
+ * Remove a window, repainting everything else. This would be simpler if we
+ * used the panel library, but that is not _always_ available.
+ */
+void
+dlg_del_window(WINDOW *win)
+{
+ DIALOG_WINDOWS *p, *q, *r;
+
+ /*
+ * If --keep-window was set, do not delete/repaint the windows.
+ */
+ if (dialog_vars.keep_window)
+ return;
+
+ /* Leave the main window untouched if there are no background windows.
+ * We do this so the current window will not be cleared on exit, allowing
+ * things like the infobox demo to run without flicker.
+ */
+ if (dialog_state.getc_callbacks != 0) {
+ touchwin(stdscr);
+ wnoutrefresh(stdscr);
+ }
+
+ for (p = dialog_state.all_windows, q = r = 0; p != 0; r = p, p = p->next) {
+ if (p->normal == win) {
+ q = p; /* found a match - should be only one */
+ if (r == 0) {
+ dialog_state.all_windows = p->next;
+ } else {
+ r->next = p->next;
+ }
+ } else {
+ if (p->shadow != 0) {
+ touchwin(p->shadow);
+ wnoutrefresh(p->shadow);
+ }
+ touchwin(p->normal);
+ wnoutrefresh(p->normal);
+ }
+ }
+
+ if (q) {
+ if (dialog_state.all_windows != 0)
+ erase_childs_shadow(q);
+ del_subwindows(q->normal);
+ dlg_unregister_window(q->normal);
+ delwin(q->normal);
+ free(q);
+ }
+ doupdate();
+}
+
+/*
+ * Create a window, optionally with a shadow.
+ */
+WINDOW *
+dlg_new_window(int height, int width, int y, int x)
+{
+ return dlg_new_modal_window(stdscr, height, width, y, x);
+}
+
+/*
+ * "Modal" windows differ from normal ones by having a shadow in a window
+ * separate from the standard screen.
+ */
+WINDOW *
+dlg_new_modal_window(WINDOW *parent, int height, int width, int y, int x)
+{
+ WINDOW *win;
+ DIALOG_WINDOWS *p = dlg_calloc(DIALOG_WINDOWS, 1);
+
+ (void) parent;
+ if (p == 0
+ || (win = newwin(height, width, y, x)) == 0) {
+ dlg_exiterr("Can't make new window at (%d,%d), size (%d,%d).\n",
+ y, x, height, width);
+ }
+ p->next = dialog_state.all_windows;
+ p->normal = win;
+ p->getc_timeout = WTIMEOUT_OFF;
+ dialog_state.all_windows = p;
+#ifdef HAVE_COLOR
+ if (dialog_state.use_shadow) {
+ p->shadow = parent;
+ draw_childs_shadow(p);
+ }
+#endif
+
+ (void) keypad(win, TRUE);
+ return win;
+}
+
+/*
+ * dlg_getc() uses the return-value to determine how to handle an ERR return
+ * from a non-blocking read:
+ * a) if greater than zero, there was an expired timeout (blocking for a short
+ * time), or
+ * b) if zero, it was a non-blocking read, or
+ * c) if negative, an error occurred on a blocking read.
+ */
+int
+dlg_set_timeout(WINDOW *win, bool will_getc)
+{
+ DIALOG_WINDOWS *p;
+ int result = 0;
+
+ if ((p = SearchTopWindows(win)) != NULL) {
+ int interval = (dialog_vars.timeout_secs * 1000);
+
+ if (will_getc || dialog_vars.pause_secs) {
+ interval = WTIMEOUT_VAL;
+ } else {
+ result = interval;
+ if (interval <= 0) {
+ interval = WTIMEOUT_OFF;
+ }
+ }
+ wtimeout(win, interval);
+ p->getc_timeout = interval;
+ }
+ return result;
+}
+
+void
+dlg_reset_timeout(WINDOW *win)
+{
+ DIALOG_WINDOWS *p;
+
+ if ((p = SearchTopWindows(win)) != NULL) {
+ wtimeout(win, p->getc_timeout);
+ } else {
+ wtimeout(win, WTIMEOUT_OFF);
+ }
+}
+
+/*
+ * Move/Resize a window, optionally with a shadow.
+ */
+#ifdef KEY_RESIZE
+void
+dlg_move_window(WINDOW *win, int height, int width, int y, int x)
+{
+ if (win != 0) {
+ DIALOG_WINDOWS *p;
+
+ dlg_ctl_size(height, width);
+
+ if ((p = SearchTopWindows(win)) != 0) {
+ (void) wresize(win, height, width);
+ (void) mvwin(win, y, x);
+#ifdef HAVE_COLOR
+ if (p->shadow != 0) {
+ if (dialog_state.use_shadow) {
+ (void) mvwin(p->shadow, y + SHADOW_ROWS, x + SHADOW_COLS);
+ } else {
+ p->shadow = 0;
+ }
+ }
+#endif
+ (void) refresh();
+
+#ifdef HAVE_COLOR
+ draw_childs_shadow(p);
+#endif
+ }
+ }
+}
+
+/*
+ * Having just received a KEY_RESIZE, wait a short time to ignore followup
+ * KEY_RESIZE events.
+ */
+void
+dlg_will_resize(WINDOW *win)
+{
+ int n, base;
+ int caught = 0;
+
+ dialog_state.had_resize = TRUE;
+ dlg_trace_win(win);
+ wtimeout(win, WTIMEOUT_VAL * 5);
+
+ for (n = base = 0; n < base + 10; ++n) {
+ int ch;
+
+ if ((ch = wgetch(win)) != ERR) {
+ if (ch == KEY_RESIZE) {
+ base = n;
+ ++caught;
+ } else if (ch != ERR) {
+ ungetch(ch);
+ break;
+ }
+ }
+ }
+ dlg_reset_timeout(win);
+ DLG_TRACE(("# caught %d KEY_RESIZE key%s\n",
+ 1 + caught,
+ caught == 1 ? "" : "s"));
+}
+#endif /* KEY_RESIZE */
+
+WINDOW *
+dlg_der_window(WINDOW *parent, int height, int width, int y, int x)
+{
+ WINDOW *win;
+
+ /* existing uses of derwin are (almost) guaranteed to succeed, and the
+ * caller has to allow for failure.
+ */
+ if ((win = derwin(parent, height, width, y, x)) != 0) {
+ add_subwindow(parent, win);
+ (void) keypad(win, TRUE);
+ }
+ return win;
+}
+
+WINDOW *
+dlg_sub_window(WINDOW *parent, int height, int width, int y, int x)
+{
+ WINDOW *win;
+
+ if ((win = subwin(parent, height, width, y, x)) == 0) {
+ dlg_exiterr("Can't make sub-window at (%d,%d), size (%d,%d).\n",
+ y, x, height, width);
+ }
+
+ add_subwindow(parent, win);
+ (void) keypad(win, TRUE);
+ return win;
+}
+
+/* obsolete */
+int
+dlg_default_item(char **items, int llen)
+{
+ int result = 0;
+
+ if (dialog_vars.default_item != 0) {
+ int count = 0;
+ while (*items != 0) {
+ if (!strcmp(dialog_vars.default_item, *items)) {
+ result = count;
+ break;
+ }
+ items += llen;
+ count++;
+ }
+ }
+ return result;
+}
+
+int
+dlg_default_listitem(DIALOG_LISTITEM * items)
+{
+ int result = 0;
+
+ if (dialog_vars.default_item != 0) {
+ int count = 0;
+ while (items->name != 0) {
+ if (!strcmp(dialog_vars.default_item, items->name)) {
+ result = count;
+ break;
+ }
+ ++items;
+ count++;
+ }
+ }
+ return result;
+}
+
+/*
+ * Draw the string for item_help
+ */
+void
+dlg_item_help(const char *txt)
+{
+ if (USE_ITEM_HELP(txt)) {
+ chtype attr = A_NORMAL;
+
+ dlg_attrset(stdscr, itemhelp_attr);
+ (void) wmove(stdscr, LINES - 1, 0);
+ (void) wclrtoeol(stdscr);
+ (void) addch(' ');
+ dlg_print_text(stdscr, txt, COLS - 1, &attr);
+
+ if (itemhelp_attr & A_COLOR) {
+ int y, x;
+ /* fill the remainder of the line with the window's attributes */
+ getyx(stdscr, y, x);
+ (void) y;
+ while (x < COLS) {
+ (void) addch(' ');
+ ++x;
+ }
+ }
+ (void) wnoutrefresh(stdscr);
+ }
+}
+
+#ifndef HAVE_STRCASECMP
+int
+dlg_strcmp(const char *a, const char *b)
+{
+ int ac, bc, cmp;
+
+ for (;;) {
+ ac = UCH(*a++);
+ bc = UCH(*b++);
+ if (isalpha(ac) && islower(ac))
+ ac = _toupper(ac);
+ if (isalpha(bc) && islower(bc))
+ bc = _toupper(bc);
+ cmp = ac - bc;
+ if (ac == 0 || bc == 0 || cmp != 0)
+ break;
+ }
+ return cmp;
+}
+#endif
+
+/*
+ * Returns true if 'dst' points to a blank which follows another blank which
+ * is not a leading blank on a line.
+ */
+static bool
+trim_blank(char *base, char *dst)
+{
+ int count = !!isblank(UCH(*dst));
+
+ while (dst-- != base) {
+ if (*dst == '\n') {
+ break;
+ } else if (isblank(UCH(*dst))) {
+ count++;
+ } else {
+ break;
+ }
+ }
+ return (count > 1);
+}
+
+/*
+ * Change embedded "\n" substrings to '\n' characters and tabs to single
+ * spaces. If there are no "\n"s, it will strip all extra spaces, for
+ * justification. If it has "\n"'s, it will preserve extra spaces. If cr_wrap
+ * is set, it will preserve '\n's.
+ */
+void
+dlg_trim_string(char *s)
+{
+ char *base = s;
+ char *p1;
+ char *p = s;
+ int has_newlines = !dialog_vars.no_nl_expand && (strstr(s, "\\n") != 0);
+
+ while (*p != '\0') {
+ if (*p == TAB && !dialog_vars.nocollapse)
+ *p = ' ';
+
+ if (has_newlines) { /* If prompt contains "\n" strings */
+ if (*p == '\\' && *(p + 1) == 'n') {
+ *s++ = '\n';
+ p += 2;
+ p1 = p;
+ /*
+ * Handle end of lines intelligently. If '\n' follows "\n"
+ * then ignore the '\n'. This eliminates the need to escape
+ * the '\n' character (no need to use "\n\").
+ */
+ while (isblank(UCH(*p1)))
+ p1++;
+ if (*p1 == '\n')
+ p = p1 + 1;
+ } else if (*p == '\n') {
+ if (dialog_vars.cr_wrap)
+ *s++ = *p++;
+ else {
+ /* Replace the '\n' with a space if cr_wrap is not set */
+ if (!trim_blank(base, p))
+ *s++ = ' ';
+ p++;
+ }
+ } else /* If *p != '\n' */
+ *s++ = *p++;
+ } else if (dialog_vars.trim_whitespace) {
+ if (isblank(UCH(*p))) {
+ if (!isblank(UCH(*(s - 1)))) {
+ *s++ = ' ';
+ p++;
+ } else
+ p++;
+ } else if (*p == '\n') {
+ if (dialog_vars.cr_wrap)
+ *s++ = *p++;
+ else if (!isblank(UCH(*(s - 1)))) {
+ /* Strip '\n's if cr_wrap is not set. */
+ *s++ = ' ';
+ p++;
+ } else
+ p++;
+ } else
+ *s++ = *p++;
+ } else { /* If there are no "\n" strings */
+ if (isblank(UCH(*p)) && !dialog_vars.nocollapse) {
+ if (!trim_blank(base, p))
+ *s++ = *p;
+ p++;
+ } else
+ *s++ = *p++;
+ }
+ }
+
+ *s = '\0';
+}
+
+void
+dlg_set_focus(WINDOW *parent, WINDOW *win)
+{
+ if (win != 0) {
+ (void) wmove(parent,
+ getpary(win) + getcury(win),
+ getparx(win) + getcurx(win));
+ (void) wnoutrefresh(win);
+ (void) doupdate();
+ }
+}
+
+/*
+ * Returns the nominal maximum buffer size.
+ */
+int
+dlg_max_input(int max_len)
+{
+ if (dialog_vars.max_input != 0 && dialog_vars.max_input < MAX_LEN)
+ max_len = dialog_vars.max_input;
+
+ return max_len;
+}
+
+/*
+ * Free storage used for the result buffer.
+ */
+void
+dlg_clr_result(void)
+{
+ if (dialog_vars.input_length) {
+ dialog_vars.input_length = 0;
+ if (dialog_vars.input_result)
+ free(dialog_vars.input_result);
+ }
+ dialog_vars.input_result = 0;
+}
+
+/*
+ * Setup a fixed-buffer for the result.
+ */
+char *
+dlg_set_result(const char *string)
+{
+ unsigned need = string ? (unsigned) strlen(string) + 1 : 0;
+
+ /* inputstr.c needs a fixed buffer */
+ if (need < MAX_LEN)
+ need = MAX_LEN;
+
+ /*
+ * If the buffer is not big enough, allocate a new one.
+ */
+ if (dialog_vars.input_length != 0
+ || dialog_vars.input_result == 0
+ || need > MAX_LEN) {
+
+ dlg_clr_result();
+
+ dialog_vars.input_length = need;
+ dialog_vars.input_result = dlg_malloc(char, need);
+ assert_ptr(dialog_vars.input_result, "dlg_set_result");
+ }
+
+ strcpy(dialog_vars.input_result, string ? string : "");
+
+ return dialog_vars.input_result;
+}
+
+/*
+ * Accumulate results in dynamically allocated buffer.
+ * If input_length is zero, it is a MAX_LEN buffer belonging to the caller.
+ */
+void
+dlg_add_result(const char *string)
+{
+ unsigned have = (dialog_vars.input_result
+ ? (unsigned) strlen(dialog_vars.input_result)
+ : 0);
+ unsigned want = (unsigned) strlen(string) + 1 + have;
+
+ if ((want >= MAX_LEN)
+ || (dialog_vars.input_length != 0)
+ || (dialog_vars.input_result == 0)) {
+
+ if (dialog_vars.input_length == 0
+ || dialog_vars.input_result == 0) {
+
+ char *save_result = dialog_vars.input_result;
+
+ dialog_vars.input_length = want * 2;
+ dialog_vars.input_result = dlg_malloc(char, dialog_vars.input_length);
+ assert_ptr(dialog_vars.input_result, "dlg_add_result malloc");
+ dialog_vars.input_result[0] = '\0';
+ if (save_result != 0)
+ strcpy(dialog_vars.input_result, save_result);
+ } else if (want >= dialog_vars.input_length) {
+ dialog_vars.input_length = want * 2;
+ dialog_vars.input_result = dlg_realloc(char,
+ dialog_vars.input_length,
+ dialog_vars.input_result);
+ assert_ptr(dialog_vars.input_result, "dlg_add_result realloc");
+ }
+ }
+ strcat(dialog_vars.input_result, string);
+}
+
+/*
+ * These are characters that (aside from the quote-delimiter) will have to
+ * be escaped in a single- or double-quoted string.
+ */
+#define FIX_SINGLE "\n\\"
+#define FIX_DOUBLE FIX_SINGLE "[]{}?*;`~#$^&()|<>"
+
+/*
+ * Returns the quote-delimiter.
+ */
+static const char *
+quote_delimiter(void)
+{
+ return dialog_vars.single_quoted ? "'" : "\"";
+}
+
+/*
+ * Returns true if we should quote the given string.
+ */
+static bool
+must_quote(char *string)
+{
+ bool code = FALSE;
+
+ if (*string != '\0') {
+ size_t len = strlen(string);
+ if (strcspn(string, quote_delimiter()) != len)
+ code = TRUE;
+ else if (strcspn(string, "\n\t ") != len)
+ code = TRUE;
+ else
+ code = (strcspn(string, FIX_DOUBLE) != len);
+ } else {
+ code = TRUE;
+ }
+
+ return code;
+}
+
+/*
+ * Add a quoted string to the result buffer.
+ */
+void
+dlg_add_quoted(char *string)
+{
+ char temp[2];
+ const char *my_quote = quote_delimiter();
+ const char *must_fix = (dialog_vars.single_quoted
+ ? FIX_SINGLE
+ : FIX_DOUBLE);
+
+ if (must_quote(string)) {
+ temp[1] = '\0';
+ dlg_add_result(my_quote);
+ while (*string != '\0') {
+ temp[0] = *string++;
+ if ((strchr) (my_quote, *temp) || (strchr) (must_fix, *temp))
+ dlg_add_result("\\");
+ dlg_add_result(temp);
+ }
+ dlg_add_result(my_quote);
+ } else {
+ dlg_add_result(string);
+ }
+}
+
+/*
+ * When adding a result, make that depend on whether "--quoted" is used.
+ */
+void
+dlg_add_string(char *string)
+{
+ if (dialog_vars.quoted) {
+ dlg_add_quoted(string);
+ } else {
+ dlg_add_result(string);
+ }
+}
+
+bool
+dlg_need_separator(void)
+{
+ bool result = FALSE;
+
+ if (dialog_vars.output_separator) {
+ result = TRUE;
+ } else if (dialog_vars.input_result && *(dialog_vars.input_result)) {
+ result = TRUE;
+ }
+ return result;
+}
+
+void
+dlg_add_separator(void)
+{
+ const char *separator = (dialog_vars.separate_output) ? "\n" : " ";
+
+ if (dialog_vars.output_separator)
+ separator = dialog_vars.output_separator;
+
+ dlg_add_result(separator);
+}
+
+#define HELP_PREFIX "HELP "
+
+void
+dlg_add_help_listitem(int *result, char **tag, DIALOG_LISTITEM * item)
+{
+ dlg_add_result(HELP_PREFIX);
+ if (USE_ITEM_HELP(item->help)) {
+ *tag = dialog_vars.help_tags ? item->name : item->help;
+ *result = DLG_EXIT_ITEM_HELP;
+ } else {
+ *tag = item->name;
+ }
+}
+
+void
+dlg_add_help_formitem(int *result, char **tag, DIALOG_FORMITEM * item)
+{
+ dlg_add_result(HELP_PREFIX);
+ if (USE_ITEM_HELP(item->help)) {
+ *tag = dialog_vars.help_tags ? item->name : item->help;
+ *result = DLG_EXIT_ITEM_HELP;
+ } else {
+ *tag = item->name;
+ }
+}
+
+/*
+ * Some widgets support only one value of a given variable - save/restore the
+ * global dialog_vars so we can override it consistently.
+ */
+void
+dlg_save_vars(DIALOG_VARS * vars)
+{
+ *vars = dialog_vars;
+}
+
+/*
+ * Most of the data in DIALOG_VARS is normally set by command-line options.
+ * The input_result member is an exception; it is normally set by the dialog
+ * library to return result values.
+ */
+void
+dlg_restore_vars(DIALOG_VARS * vars)
+{
+ char *save_result = dialog_vars.input_result;
+ unsigned save_length = dialog_vars.input_length;
+
+ dialog_vars = *vars;
+ dialog_vars.input_result = save_result;
+ dialog_vars.input_length = save_length;
+}
+
+/*
+ * Called each time a widget is invoked which may do output, increment a count.
+ */
+void
+dlg_does_output(void)
+{
+ dialog_state.output_count += 1;
+}
+
+/*
+ * Compatibility for different versions of curses.
+ */
+#if !(defined(HAVE_GETBEGX) && defined(HAVE_GETBEGY))
+int
+dlg_getbegx(WINDOW *win)
+{
+ int y, x;
+ getbegyx(win, y, x);
+ (void) y;
+ return x;
+}
+int
+dlg_getbegy(WINDOW *win)
+{
+ int y, x;
+ getbegyx(win, y, x);
+ (void) x;
+ return y;
+}
+#endif
+
+#if !(defined(HAVE_GETCURX) && defined(HAVE_GETCURY))
+int
+dlg_getcurx(WINDOW *win)
+{
+ int y, x;
+ getyx(win, y, x);
+ (void) y;
+ return x;
+}
+int
+dlg_getcury(WINDOW *win)
+{
+ int y, x;
+ getyx(win, y, x);
+ (void) x;
+ return y;
+}
+#endif
+
+#if !(defined(HAVE_GETMAXX) && defined(HAVE_GETMAXY))
+int
+dlg_getmaxx(WINDOW *win)
+{
+ int y, x;
+ getmaxyx(win, y, x);
+ (void) y;
+ return x;
+}
+int
+dlg_getmaxy(WINDOW *win)
+{
+ int y, x;
+ getmaxyx(win, y, x);
+ (void) x;
+ return y;
+}
+#endif
+
+#if !(defined(HAVE_GETPARX) && defined(HAVE_GETPARY))
+int
+dlg_getparx(WINDOW *win)
+{
+ int y, x;
+ getparyx(win, y, x);
+ (void) y;
+ return x;
+}
+int
+dlg_getpary(WINDOW *win)
+{
+ int y, x;
+ getparyx(win, y, x);
+ (void) x;
+ return y;
+}
+#endif
+
+#ifdef NEED_WGETPARENT
+WINDOW *
+dlg_wgetparent(WINDOW *win)
+{
+#undef wgetparent
+ WINDOW *result = 0;
+ DIALOG_WINDOWS *p;
+
+ for (p = dialog_state.all_subwindows; p != 0; p = p->next) {
+ if (p->shadow == win) {
+ result = p->normal;
+ break;
+ }
+ }
+ return result;
+}
+#endif
Radix cross Linux
The main Radix cross Linux repository contains the build scripts of packages, which have the most complete and common functionality for desktop machines
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