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Make all dialog box available from C programs via functions calls

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This commit is contained in:
Andrey A. Chernov 1994-10-11 23:30:51 +00:00
parent 5df7296441
commit 3728ed9c8f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/cvs2svn/branches/savio_lam/; revision=3515
16 changed files with 3985 additions and 0 deletions
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339
gnu/lib/libdialog/COPYING Normal file
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
675 Mass Ave, Cambridge, MA 02139, USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
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Public License instead of this License.

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# Makefile for libdialog
# $Id: Makefile,v 1.2 1994/10/09 00:46:16 pst Exp $
LIB= dialog
SRCS= kernel.c rc.c checklist.c inputbox.c menubox.c msgbox.c \
radiolist.c textbox.c yesno.c
CFLAGS+= -Wall -Wstrict-prototypes -DHAVE_NCURSES -DLOCALE
SHARED_LDADD+= -lncurses -lmytinfo
beforeinstall:
-cd ${.CURDIR}; cmp -s dialog.h ${DESTDIR}/usr/include/dialog.h || \
install -c -o ${BINOWN} -g ${BINGRP} -m 444 dialog.h \
${DESTDIR}/usr/include
.include <bsd.lib.mk>

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This library splitted out from 'dialog' program for use inside
C-programs. For interface function list see dialog.h.
For usage examples see 'dialog' program sources itself into
/usr/src/gnu/usr.bin/dialog.
You can additionly use any ncurses functions after init_dialog().
Ache.

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/*
* checklist.c -- implements the checklist box
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "dialog.priv.h"
#include <dialog.h>
static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int status, int choice, int selected);
static int list_width, check_x, item_x;
/*
* Display a dialog box with a list of options that can be turned on or off
*/
int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, int width, int list_height, int item_no, unsigned char **items, unsigned char *result)
{
int i, x, y, cur_x, cur_y, box_x, box_y, key = 0, button = 0, choice = 0,
scroll = 0, max_choice, *status;
WINDOW *dialog, *list;
/* Allocate space for storing item on/off status */
if ((status = malloc(sizeof(int)*item_no)) == NULL) {
endwin();
fprintf(stderr, "\nCan't allocate memory in dialog_checklist().\n");
exit(-1);
}
/* Initializes status */
for (i = 0; i < item_no; i++)
status[i] = !strcasecmp(items[i*3 + 2], "on");
max_choice = MIN(list_height, item_no);
/* center dialog box on screen */
x = (COLS - width)/2;
y = (LINES - height)/2;
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(stdscr, y, x, height, width);
#endif
dialog = newwin(height, width, y, x);
keypad(dialog, TRUE);
draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
wattrset(dialog, border_attr);
wmove(dialog, height-3, 0);
waddch(dialog, ACS_LTEE);
for (i = 0; i < width-2; i++)
waddch(dialog, ACS_HLINE);
wattrset(dialog, dialog_attr);
waddch(dialog, ACS_RTEE);
wmove(dialog, height-2, 1);
for (i = 0; i < width-2; i++)
waddch(dialog, ' ');
if (title != NULL) {
wattrset(dialog, title_attr);
wmove(dialog, 0, (width - strlen(title))/2 - 1);
waddch(dialog, ' ');
waddstr(dialog, title);
waddch(dialog, ' ');
}
wattrset(dialog, dialog_attr);
print_autowrap(dialog, prompt, width, 1, 3);
list_width = width-6;
getyx(dialog, cur_y, cur_x);
box_y = cur_y + 1;
box_x = (width - list_width)/2 - 1;
/* create new window for the list */
list = subwin(dialog, list_height, list_width, y + box_y + 1, x + box_x + 1);
keypad(list, TRUE);
/* draw a box around the list items */
draw_box(dialog, box_y, box_x, list_height+2, list_width+2, menubox_border_attr, menubox_attr);
check_x = 0;
item_x = 0;
/* Find length of longest item in order to center checklist */
for (i = 0; i < item_no; i++) {
check_x = MAX(check_x, strlen(items[i*3]) + strlen(items[i*3 + 1]) + 6);
item_x = MAX(item_x, strlen(items[i*3]));
}
check_x = (list_width - check_x) / 2;
item_x = check_x + item_x + 6;
/* Print the list */
for (i = 0; i < max_choice; i++)
print_item(list, items[i*3], items[i*3 + 1], status[i], i, i == choice);
wnoutrefresh(list);
if (list_height < item_no) {
wattrset(dialog, darrow_attr);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 5);
waddch(dialog, ACS_DARROW);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 6);
waddstr(dialog, "(+)");
}
x = width/2-11;
y = height-2;
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wrefresh(dialog);
while (key != ESC) {
key = wgetch(dialog);
/* Check if key pressed matches first character of any item tag in list */
for (i = 0; i < max_choice; i++)
if (key < 0x100 && toupper(key) == toupper(items[(scroll+i)*3][0]))
break;
if (i < max_choice || (key >= '1' && key <= MIN('9', '0'+max_choice)) ||
key == KEY_UP || key == KEY_DOWN || key == ' ' ||
key == '+' || key == '-' ) {
if (key >= '1' && key <= MIN('9', '0'+max_choice))
i = key - '1';
else if (key == KEY_UP || key == '-') {
if (!choice) {
if (scroll) {
#ifdef BROKEN_WSCRL
/* wscrl() in ncurses 1.8.1 seems to be broken, causing a segmentation
violation when scrolling windows of height = 4, so scrolling is not
used for now */
scroll--;
getyx(dialog, cur_y, cur_x); /* Save cursor position */
/* Reprint list to scroll down */
for (i = 0; i < max_choice; i++)
print_item(list, items[(scroll+i)*3], items[(scroll+i)*3 + 1], status[scroll+i], i, i == choice);
#else
/* Scroll list down */
getyx(dialog, cur_y, cur_x); /* Save cursor position */
if (list_height > 1) {
/* De-highlight current first item before scrolling down */
print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0, FALSE);
scrollok(list, TRUE);
wscrl(list, -1);
scrollok(list, FALSE);
}
scroll--;
print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0, TRUE);
#endif
wnoutrefresh(list);
/* print the up/down arrows */
wmove(dialog, box_y, box_x + check_x + 5);
wattrset(dialog, scroll ? uarrow_attr : menubox_attr);
waddch(dialog, scroll ? ACS_UARROW : ACS_HLINE);
wmove(dialog, box_y, box_x + check_x + 6);
waddch(dialog, scroll ? '(' : ACS_HLINE);
wmove(dialog, box_y, box_x + check_x + 7);
waddch(dialog, scroll ? '-' : ACS_HLINE);
wmove(dialog, box_y, box_x + check_x + 8);
waddch(dialog, scroll ? ')' : ACS_HLINE);
wattrset(dialog, darrow_attr);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 5);
waddch(dialog, ACS_DARROW);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 6);
waddch(dialog, '(');
wmove(dialog, box_y + list_height + 1, box_x + check_x + 7);
waddch(dialog, '+');
wmove(dialog, box_y + list_height + 1, box_x + check_x + 8);
waddch(dialog, ')');
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
continue; /* wait for another key press */
}
else
i = choice - 1;
}
else if (key == KEY_DOWN || key == '+') {
if (choice == max_choice - 1) {
if (scroll+choice < item_no-1) {
#ifdef BROKEN_WSCRL
/* wscrl() in ncurses 1.8.1 seems to be broken, causing a segmentation
violation when scrolling windows of height = 4, so scrolling is not
used for now */
scroll++;
getyx(dialog, cur_y, cur_x); /* Save cursor position */
/* Reprint list to scroll up */
for (i = 0; i < max_choice; i++)
print_item(list, items[(scroll+i)*3], items[(scroll+i)*3 + 1], status[scroll+i], i, i == choice);
#else
/* Scroll list up */
getyx(dialog, cur_y, cur_x); /* Save cursor position */
if (list_height > 1) {
/* De-highlight current last item before scrolling up */
print_item(list, items[(scroll+max_choice-1)*3], items[(scroll+max_choice-1)*3 + 1], status[scroll+max_choice-1], max_choice-1, FALSE);
scrollok(list, TRUE);
scroll(list);
scrollok(list, FALSE);
}
scroll++;
print_item(list, items[(scroll+max_choice-1)*3], items[(scroll+max_choice-1)*3 + 1], status[scroll+max_choice-1], max_choice-1, TRUE);
#endif
wnoutrefresh(list);
/* print the up/down arrows */
wattrset(dialog, uarrow_attr);
wmove(dialog, box_y, box_x + check_x + 5);
waddch(dialog, ACS_UARROW);
wmove(dialog, box_y, box_x + check_x + 6);
waddstr(dialog, "(-)");
wmove(dialog, box_y + list_height + 1, box_x + check_x + 5);
wattrset(dialog, scroll+choice < item_no-1 ? darrow_attr : menubox_border_attr);
waddch(dialog, scroll+choice < item_no-1 ? ACS_DARROW : ACS_HLINE);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 6);
waddch(dialog, scroll+choice < item_no-1 ? '(' : ACS_HLINE);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 7);
waddch(dialog, scroll+choice < item_no-1 ? '+' : ACS_HLINE);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 8);
waddch(dialog, scroll+choice < item_no-1 ? ')' : ACS_HLINE);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
continue; /* wait for another key press */
}
else
i = choice + 1;
}
else if (key == ' ') { /* Toggle item status */
status[scroll+choice] = !status[scroll+choice];
getyx(dialog, cur_y, cur_x); /* Save cursor position */
wmove(list, choice, check_x);
wattrset(list, check_selected_attr);
wprintw(list, "[%c]", status[scroll+choice] ? 'X' : ' ');
wnoutrefresh(list);
wmove(dialog, cur_y, cur_x); /* Restore cursor to previous position */
wrefresh(dialog);
continue; /* wait for another key press */
}
if (i != choice) {
/* De-highlight current item */
getyx(dialog, cur_y, cur_x); /* Save cursor position */
print_item(list, items[(scroll+choice)*3], items[(scroll+choice)*3 + 1], status[scroll+choice], choice, FALSE);
/* Highlight new item */
choice = i;
print_item(list, items[(scroll+choice)*3], items[(scroll+choice)*3 + 1], status[scroll+choice], choice, TRUE);
wnoutrefresh(list);
wmove(dialog, cur_y, cur_x); /* Restore cursor to previous position */
wrefresh(dialog);
}
continue; /* wait for another key press */
}
switch (key) {
case 'O':
case 'o':
delwin(dialog);
*result = '\0';
for (i = 0; i < item_no; i++)
if (status[i]) {
strcat(result, items[i*3]);
strcat(result, "\n");
}
free(status);
return 0;
case 'C':
case 'c':
delwin(dialog);
free(status);
return 1;
case TAB:
case KEY_BTAB:
case KEY_LEFT:
case KEY_RIGHT:
if (!button) {
button = 1; /* Indicates "Cancel" button is selected */
print_button(dialog, " OK ", y, x, FALSE);
print_button(dialog, "Cancel", y, x+14, TRUE);
}
else {
button = 0; /* Indicates "OK" button is selected */
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
}
wrefresh(dialog);
break;
case ' ':
case '\n':
delwin(dialog);
if (!button) {
*result = '\0';
for (i = 0; i < item_no; i++)
if (status[i]) {
strcat(result, items[i*3]);
strcat(result, "\n");
}
}
free(status);
return button;
case ESC:
break;
}
}
delwin(dialog);
free(status);
return -1; /* ESC pressed */
}
/* End of dialog_checklist() */
/*
* Print list item
*/
static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int status, int choice, int selected)
{
int i;
/* Clear 'residue' of last item */
wattrset(win, menubox_attr);
wmove(win, choice, 0);
for (i = 0; i < list_width; i++)
waddch(win, ' ');
wmove(win, choice, check_x);
wattrset(win, selected ? check_selected_attr : check_attr);
wprintw(win, "[%c]", status ? 'X' : ' ');
wattrset(win, menubox_attr);
waddch(win, ' ');
wattrset(win, selected ? tag_key_selected_attr : tag_key_attr);
waddch(win, tag[0]);
wattrset(win, selected ? tag_selected_attr : tag_attr);
waddstr(win, tag + 1);
wmove(win, choice, item_x);
wattrset(win, selected ? item_selected_attr : item_attr);
waddstr(win, item);
}
/* End of print_item() */

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/*
* colors.h -- color attribute definitions
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Default color definitions
*
* *_FG = foreground
* *_BG = background
* *_HL = highlight?
*/
#define SCREEN_FG COLOR_CYAN
#define SCREEN_BG COLOR_BLUE
#define SCREEN_HL TRUE
#define SHADOW_FG COLOR_BLACK
#define SHADOW_BG COLOR_BLACK
#define SHADOW_HL TRUE
#define DIALOG_FG COLOR_BLACK
#define DIALOG_BG COLOR_WHITE
#define DIALOG_HL FALSE
#define TITLE_FG COLOR_YELLOW
#define TITLE_BG COLOR_WHITE
#define TITLE_HL TRUE
#define BORDER_FG COLOR_WHITE
#define BORDER_BG COLOR_WHITE
#define BORDER_HL TRUE
#define BUTTON_ACTIVE_FG COLOR_WHITE
#define BUTTON_ACTIVE_BG COLOR_BLUE
#define BUTTON_ACTIVE_HL TRUE
#define BUTTON_INACTIVE_FG COLOR_BLACK
#define BUTTON_INACTIVE_BG COLOR_WHITE
#define BUTTON_INACTIVE_HL FALSE
#define BUTTON_KEY_ACTIVE_FG COLOR_WHITE
#define BUTTON_KEY_ACTIVE_BG COLOR_BLUE
#define BUTTON_KEY_ACTIVE_HL TRUE
#define BUTTON_KEY_INACTIVE_FG COLOR_RED
#define BUTTON_KEY_INACTIVE_BG COLOR_WHITE
#define BUTTON_KEY_INACTIVE_HL FALSE
#define BUTTON_LABEL_ACTIVE_FG COLOR_YELLOW
#define BUTTON_LABEL_ACTIVE_BG COLOR_BLUE
#define BUTTON_LABEL_ACTIVE_HL TRUE
#define BUTTON_LABEL_INACTIVE_FG COLOR_BLACK
#define BUTTON_LABEL_INACTIVE_BG COLOR_WHITE
#define BUTTON_LABEL_INACTIVE_HL TRUE
#define INPUTBOX_FG COLOR_BLACK
#define INPUTBOX_BG COLOR_WHITE
#define INPUTBOX_HL FALSE
#define INPUTBOX_BORDER_FG COLOR_BLACK
#define INPUTBOX_BORDER_BG COLOR_WHITE
#define INPUTBOX_BORDER_HL FALSE
#define SEARCHBOX_FG COLOR_BLACK
#define SEARCHBOX_BG COLOR_WHITE
#define SEARCHBOX_HL FALSE
#define SEARCHBOX_TITLE_FG COLOR_YELLOW
#define SEARCHBOX_TITLE_BG COLOR_WHITE
#define SEARCHBOX_TITLE_HL TRUE
#define SEARCHBOX_BORDER_FG COLOR_WHITE
#define SEARCHBOX_BORDER_BG COLOR_WHITE
#define SEARCHBOX_BORDER_HL TRUE
#define POSITION_INDICATOR_FG COLOR_YELLOW
#define POSITION_INDICATOR_BG COLOR_WHITE
#define POSITION_INDICATOR_HL TRUE
#define MENUBOX_FG COLOR_BLACK
#define MENUBOX_BG COLOR_WHITE
#define MENUBOX_HL FALSE
#define MENUBOX_BORDER_FG COLOR_WHITE
#define MENUBOX_BORDER_BG COLOR_WHITE
#define MENUBOX_BORDER_HL TRUE
#define ITEM_FG COLOR_BLACK
#define ITEM_BG COLOR_WHITE
#define ITEM_HL FALSE
#define ITEM_SELECTED_FG COLOR_WHITE
#define ITEM_SELECTED_BG COLOR_BLUE
#define ITEM_SELECTED_HL TRUE
#define TAG_FG COLOR_YELLOW
#define TAG_BG COLOR_WHITE
#define TAG_HL TRUE
#define TAG_SELECTED_FG COLOR_YELLOW
#define TAG_SELECTED_BG COLOR_BLUE
#define TAG_SELECTED_HL TRUE
#define TAG_KEY_FG COLOR_RED
#define TAG_KEY_BG COLOR_WHITE
#define TAG_KEY_HL TRUE
#define TAG_KEY_SELECTED_FG COLOR_RED
#define TAG_KEY_SELECTED_BG COLOR_BLUE
#define TAG_KEY_SELECTED_HL TRUE
#define CHECK_FG COLOR_BLACK
#define CHECK_BG COLOR_WHITE
#define CHECK_HL FALSE
#define CHECK_SELECTED_FG COLOR_WHITE
#define CHECK_SELECTED_BG COLOR_BLUE
#define CHECK_SELECTED_HL TRUE
#define UARROW_FG COLOR_GREEN
#define UARROW_BG COLOR_WHITE
#define UARROW_HL TRUE
#define DARROW_FG COLOR_GREEN
#define DARROW_BG COLOR_WHITE
#define DARROW_HL TRUE
/* End of default color definitions */
#define C_ATTR(x,y) ((x ? A_BOLD : 0) | COLOR_PAIR((y)))
#define COLOR_NAME_LEN 10
#define COLOR_COUNT 8
/*
* Global variables
*/
typedef struct {
unsigned char name[COLOR_NAME_LEN];
int value;
} color_names_st;
#ifdef __DIALOG_MAIN__
/*
* For matching color names with color values
*/
color_names_st color_names[] = {
{"BLACK", COLOR_BLACK},
{"RED", COLOR_RED},
{"GREEN", COLOR_GREEN},
{"YELLOW", COLOR_YELLOW},
{"BLUE", COLOR_BLUE},
{"MAGENTA", COLOR_MAGENTA},
{"CYAN", COLOR_CYAN},
{"WHITE", COLOR_WHITE},
}; /* color names */
/*
* Table of color values
*/
int color_table[][3] = {
{SCREEN_FG, SCREEN_BG, SCREEN_HL },
{SHADOW_FG, SHADOW_BG, SHADOW_HL },
{DIALOG_FG, DIALOG_BG, DIALOG_HL },
{TITLE_FG, TITLE_BG, TITLE_HL },
{BORDER_FG, BORDER_BG, BORDER_HL },
{BUTTON_ACTIVE_FG, BUTTON_ACTIVE_BG, BUTTON_ACTIVE_HL },
{BUTTON_INACTIVE_FG, BUTTON_INACTIVE_BG, BUTTON_INACTIVE_HL },
{BUTTON_KEY_ACTIVE_FG, BUTTON_KEY_ACTIVE_BG, BUTTON_KEY_ACTIVE_HL },
{BUTTON_KEY_INACTIVE_FG, BUTTON_KEY_INACTIVE_BG, BUTTON_KEY_INACTIVE_HL },
{BUTTON_LABEL_ACTIVE_FG, BUTTON_LABEL_ACTIVE_BG, BUTTON_LABEL_ACTIVE_HL },
{BUTTON_LABEL_INACTIVE_FG,BUTTON_LABEL_INACTIVE_BG,BUTTON_LABEL_INACTIVE_HL},
{INPUTBOX_FG, INPUTBOX_BG, INPUTBOX_HL },
{INPUTBOX_BORDER_FG, INPUTBOX_BORDER_BG, INPUTBOX_BORDER_HL },
{SEARCHBOX_FG, SEARCHBOX_BG, SEARCHBOX_HL },
{SEARCHBOX_TITLE_FG, SEARCHBOX_TITLE_BG, SEARCHBOX_TITLE_HL },
{SEARCHBOX_BORDER_FG, SEARCHBOX_BORDER_BG, SEARCHBOX_BORDER_HL },
{POSITION_INDICATOR_FG, POSITION_INDICATOR_BG, POSITION_INDICATOR_HL },
{MENUBOX_FG, MENUBOX_BG, MENUBOX_HL },
{MENUBOX_BORDER_FG, MENUBOX_BORDER_BG, MENUBOX_BORDER_HL },
{ITEM_FG, ITEM_BG, ITEM_HL },
{ITEM_SELECTED_FG, ITEM_SELECTED_BG, ITEM_SELECTED_HL },
{TAG_FG, TAG_BG, TAG_HL },
{TAG_SELECTED_FG, TAG_SELECTED_BG, TAG_SELECTED_HL },
{TAG_KEY_FG, TAG_KEY_BG, TAG_KEY_HL },
{TAG_KEY_SELECTED_FG, TAG_KEY_SELECTED_BG, TAG_KEY_SELECTED_HL },
{CHECK_FG, CHECK_BG, CHECK_HL },
{CHECK_SELECTED_FG, CHECK_SELECTED_BG, CHECK_SELECTED_HL },
{UARROW_FG, UARROW_BG, UARROW_HL },
{DARROW_FG, DARROW_BG, DARROW_HL },
}; /* color_table */
#else
extern color_names_st color_names[];
extern int color_table[][3];
#endif /* __DIALOG_MAIN__ */

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/*
* dialog.h -- common declarations for all dialog modules
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define VERSION "0.4"
#define MAX_LEN 2048
void dialog_create_rc(unsigned char *filename);
int dialog_yesno(unsigned char *title, unsigned char *prompt, int height, int width);
int dialog_msgbox(unsigned char *title, unsigned char *prompt, int height, int width, int pause);
int dialog_textbox(unsigned char *title, unsigned char *file, int height, int width);
int dialog_menu(unsigned char *title, unsigned char *prompt, int height, int width, int menu_height, int item_no, unsigned char **items, unsigned char *result);
int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, int width, int list_height, int item_no, unsigned char **items, unsigned char *result);
int dialog_radiolist(char *title, char *prompt, int height, int width, int list_height, int item_no, unsigned char **items, unsigned char *result);
int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int width, unsigned char *result);
void dialog_clear(void);
void dialog_update(void);
void init_dialog(void);
void end_dialog(void);

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/*
* dialog.h -- common declarations for all dialog modules
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_NCURSES
#include <ncurses.h>
#else
#ifdef ultrix
#include <cursesX.h>
#else
#include <curses.h>
#endif
#endif
#if defined(LOCALE)
#include <locale.h>
#endif
/*
* Change these if you want
*/
#define USE_SHADOW TRUE
#define USE_COLORS TRUE
#define ESC 27
#define TAB 9
#define BUF_SIZE (10*1024)
#define MIN(x,y) (x < y ? x : y)
#define MAX(x,y) (x > y ? x : y)
#ifndef HAVE_NCURSES
#ifndef ACS_ULCORNER
#define ACS_ULCORNER '+'
#endif
#ifndef ACS_LLCORNER
#define ACS_LLCORNER '+'
#endif
#ifndef ACS_URCORNER
#define ACS_URCORNER '+'
#endif
#ifndef ACS_LRCORNER
#define ACS_LRCORNER '+'
#endif
#ifndef ACS_HLINE
#define ACS_HLINE '-'
#endif
#ifndef ACS_VLINE
#define ACS_VLINE '|'
#endif
#ifndef ACS_LTEE
#define ACS_LTEE '+'
#endif
#ifndef ACS_RTEE
#define ACS_RTEE '+'
#endif
#ifndef ACS_UARROW
#define ACS_UARROW '^'
#endif
#ifndef ACS_DARROW
#define ACS_DARROW 'v'
#endif
#endif /* HAVE_NCURSES */
/*
* Attribute names
*/
#define screen_attr attributes[0]
#define shadow_attr attributes[1]
#define dialog_attr attributes[2]
#define title_attr attributes[3]
#define border_attr attributes[4]
#define button_active_attr attributes[5]
#define button_inactive_attr attributes[6]
#define button_key_active_attr attributes[7]
#define button_key_inactive_attr attributes[8]
#define button_label_active_attr attributes[9]
#define button_label_inactive_attr attributes[10]
#define inputbox_attr attributes[11]
#define inputbox_border_attr attributes[12]
#define searchbox_attr attributes[13]
#define searchbox_title_attr attributes[14]
#define searchbox_border_attr attributes[15]
#define position_indicator_attr attributes[16]
#define menubox_attr attributes[17]
#define menubox_border_attr attributes[18]
#define item_attr attributes[19]
#define item_selected_attr attributes[20]
#define tag_attr attributes[21]
#define tag_selected_attr attributes[22]
#define tag_key_attr attributes[23]
#define tag_key_selected_attr attributes[24]
#define check_attr attributes[25]
#define check_selected_attr attributes[26]
#define uarrow_attr attributes[27]
#define darrow_attr attributes[28]
/* number of attributes */
#define ATTRIBUTE_COUNT 29
/*
* Global variables
*/
#ifdef __DIALOG_MAIN__
#ifdef HAVE_NCURSES
/* use colors by default? */
bool use_colors = USE_COLORS;
/* shadow dialog boxes by default?
Note that 'use_shadow' implies 'use_colors' */
bool use_shadow = USE_SHADOW;
#endif
/*
* Attribute values, default is for mono display
*/
chtype attributes[] = {
A_NORMAL, /* screen_attr */
A_NORMAL, /* shadow_attr */
A_REVERSE, /* dialog_attr */
A_REVERSE, /* title_attr */
A_REVERSE, /* border_attr */
A_BOLD, /* button_active_attr */
A_DIM, /* button_inactive_attr */
A_UNDERLINE, /* button_key_active_attr */
A_UNDERLINE, /* button_key_inactive_attr */
A_NORMAL, /* button_label_active_attr */
A_NORMAL, /* button_label_inactive_attr */
A_REVERSE, /* inputbox_attr */
A_REVERSE, /* inputbox_border_attr */
A_REVERSE, /* searchbox_attr */
A_REVERSE, /* searchbox_title_attr */
A_REVERSE, /* searchbox_border_attr */
A_REVERSE, /* position_indicator_attr */
A_REVERSE, /* menubox_attr */
A_REVERSE, /* menubox_border_attr */
A_REVERSE, /* item_attr */
A_NORMAL, /* item_selected_attr */
A_REVERSE, /* tag_attr */
A_REVERSE, /* tag_selected_attr */
A_NORMAL, /* tag_key_attr */
A_BOLD, /* tag_key_selected_attr */
A_REVERSE, /* check_attr */
A_REVERSE, /* check_selected_attr */
A_REVERSE, /* uarrow_attr */
A_REVERSE /* darrow_attr */
};
#else
#ifdef HAVE_NCURSES
extern bool use_colors;
extern bool use_shadow;
#endif
extern chtype attributes[];
#endif /* __DIALOG_MAIN__ */
#ifdef HAVE_NCURSES
/*
* Function prototypes
*/
#ifdef __DIALOG_MAIN__
extern int parse_rc(void);
#endif /* __DIALOG_MAIN__ */
#endif
#ifdef HAVE_NCURSES
void color_setup(void);
#endif
void attr_clear(WINDOW *win, int height, int width, chtype attr);
void print_autowrap(WINDOW *win, unsigned char *prompt, int width, int y, int x);
void print_button(WINDOW *win, unsigned char *label, int y, int x, int selected);
void draw_box(WINDOW *win, int y, int x, int height, int width, chtype box, chtype border);
#ifdef HAVE_NCURSES
void draw_shadow(WINDOW *win, int y, int x, int height, int width);
#endif

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/*
* inputbox.c -- implements the input box
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "dialog.priv.h"
#include <dialog.h>
/*
* Display a dialog box for inputing a string
*/
int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int width, unsigned char *result)
{
int i, x, y, box_y, box_x, box_width,
input_x = 0, scroll = 0, key = 0, button = -1;
unsigned char instr[MAX_LEN+1];
WINDOW *dialog;
/* center dialog box on screen */
x = (COLS - width)/2;
y = (LINES - height)/2;
memset(instr, 0, sizeof(instr));
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(stdscr, y, x, height, width);
#endif
dialog = newwin(height, width, y, x);
keypad(dialog, TRUE);
draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
wattrset(dialog, border_attr);
wmove(dialog, height-3, 0);
waddch(dialog, ACS_LTEE);
for (i = 0; i < width-2; i++)
waddch(dialog, ACS_HLINE);
wattrset(dialog, dialog_attr);
waddch(dialog, ACS_RTEE);
wmove(dialog, height-2, 1);
for (i = 0; i < width-2; i++)
waddch(dialog, ' ');
if (title != NULL) {
wattrset(dialog, title_attr);
wmove(dialog, 0, (width - strlen(title))/2 - 1);
waddch(dialog, ' ');
waddstr(dialog, title);
waddch(dialog, ' ');
}
wattrset(dialog, dialog_attr);
print_autowrap(dialog, prompt, width, 1, 3);
/* Draw the input field box */
box_width = width-6;
getyx(dialog, y, x);
box_y = y + 2;
box_x = (width - box_width)/2;
draw_box(dialog, y+1, box_x-1, 3, box_width+2, border_attr, dialog_attr);
x = width/2-11;
y = height-2;
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wmove(dialog, box_y, box_x);
wrefresh(dialog);
while (key != ESC) {
key = wgetch(dialog);
if (button == -1) { /* Input box selected */
switch (key) {
case TAB:
case KEY_BTAB:
case KEY_UP:
case KEY_DOWN:
break;
case KEY_HOME:
input_x = scroll = 0;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[i] ? instr[i] : ' ');
wmove(dialog, box_y, box_x);
wrefresh(dialog);
continue;
case KEY_END:
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
i++;
input_x = i % box_width;
scroll = i - input_x;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
continue;
case KEY_LEFT:
if (input_x || scroll) {
wattrset(dialog, inputbox_attr);
if (!input_x) {
int oldscroll = scroll;
scroll = scroll < box_width-1 ? 0 : scroll-(box_width-1);
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+input_x+i] ? instr[scroll+input_x+i] : ' ');
input_x = oldscroll - 1 - scroll;
}
else
input_x--;
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
}
continue;
case KEY_RIGHT:
if (scroll+input_x < MAX_LEN) {
wattrset(dialog, inputbox_attr);
if (!instr[scroll+input_x])
instr[scroll+input_x] = ' ';
if (input_x == box_width-1) {
scroll++;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, box_x + box_width - 1);
}
else {
wmove(dialog, box_y, input_x + box_x);
waddch(dialog, instr[scroll+input_x]);
input_x++;
}
wrefresh(dialog);
} else
flash(); /* Alarm user about overflow */
continue;
case KEY_BACKSPACE:
case KEY_DC:
if (input_x || scroll) {
i = strlen(instr);
memmove(instr+scroll+input_x-1, instr+scroll+input_x, i-scroll+input_x+1);
wattrset(dialog, inputbox_attr);
if (!input_x) {
int oldscroll = scroll;
scroll = scroll < box_width-1 ? 0 : scroll-(box_width-1);
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+input_x+i] ? instr[scroll+input_x+i] : ' ');
input_x = oldscroll - 1 - scroll;
}
else
input_x--;
wmove(dialog, box_y, input_x + box_x);
for (i = input_x; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
}
continue;
default:
if (key < 0x100 && isprint(key)) {
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
i++;
if (i < MAX_LEN) {
memmove(instr+scroll+input_x+1, instr+scroll+input_x, i-scroll+input_x);
wattrset(dialog, inputbox_attr);
instr[scroll+input_x] = key;
if (input_x == box_width-1) {
scroll++;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width-1; i++)
waddch(dialog, instr[scroll+i]);
}
else {
wmove(dialog, box_y, input_x + box_x);
for (i = input_x; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, ++input_x + box_x);
}
wrefresh(dialog);
} else
flash(); /* Alarm user about overflow */
continue;
}
}
}
switch (key) {
case 'O':
case 'o':
delwin(dialog);
strcpy(result, instr);
return 0;
case 'C':
case 'c':
delwin(dialog);
return 1;
case KEY_UP:
case KEY_LEFT:
case KEY_BTAB:
switch (button) {
case -1:
button = 1; /* Indicates "Cancel" button is selected */
print_button(dialog, " OK ", y, x, FALSE);
print_button(dialog, "Cancel", y, x+14, TRUE);
wrefresh(dialog);
break;
case 0:
button = -1; /* Indicates input box is selected */
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wmove(dialog, box_y, box_x + input_x);
wrefresh(dialog);
break;
case 1:
button = 0; /* Indicates "OK" button is selected */
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wrefresh(dialog);
break;
}
break;
case TAB:
case KEY_DOWN:
case KEY_RIGHT:
switch (button) {
case -1:
button = 0; /* Indicates "OK" button is selected */
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wrefresh(dialog);
break;
case 0:
button = 1; /* Indicates "Cancel" button is selected */
print_button(dialog, " OK ", y, x, FALSE);
print_button(dialog, "Cancel", y, x+14, TRUE);
wrefresh(dialog);
break;
case 1:
button = -1; /* Indicates input box is selected */
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wmove(dialog, box_y, box_x + input_x);
wrefresh(dialog);
break;
}
break;
case ' ':
case '\n':
delwin(dialog);
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
if (button < 1)
strcpy(result, instr);
return (button == -1 ? 0 : button);
case ESC:
break;
}
}
delwin(dialog);
return -1; /* ESC pressed */
}
/* End of dialog_inputbox() */

330
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/*
* dialog - Display simple dialog boxes from shell scripts
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* HISTORY:
*
* 17/12/93 - Version 0.1 released.
*
* 19/12/93 - menu will now scroll if there are more items than can fit
* on the screen.
* - added 'checklist', a dialog box with a list of options that
* can be turned on or off. A list of options that are on is
* returned on exit.
*
* 20/12/93 - Version 0.15 released.
*
* 29/12/93 - Incorporated patch from Patrick J. Volkerding
* (volkerdi@mhd1.moorhead.msus.edu) that made these changes:
* - increased MAX_LEN to 2048
* - added 'infobox', equivalent to a message box without pausing
* - added option '--clear' that will clear the screen
* - Explicit line breaking when printing prompt text can be
* invoked by real newline '\n' besides the string "\n"
* - an optional parameter '--title <string>' can be used to
* specify a title string for the dialog box
*
* 03/01/94 - added 'textbox', a dialog box for displaying text from a file.
* - Version 0.2 released.
*
* 04/01/94 - some fixes and improvements for 'textbox':
* - fixed a bug that will cause a segmentation violation when a
* line is longer than MAX_LEN characters. Lines will now be
* truncated if they are longer than MAX_LEN characters.
* - removed wrefresh() from print_line(). This will increase
* efficiency of print_page() which calls print_line().
* - display current position in the form of percentage into file.
* - Version 0.21 released.
*
* 05/01/94 - some changes for faster screen update.
*
* 07/01/94 - much more flexible color settings. Can use all 16 colors
* (8 normal, 8 highlight) of the Linux console.
*
* 08/01/94 - added run-time configuration using configuration file.
*
* 09/01/94 - some minor bug fixes and cleanups for menubox, checklist and
* textbox.
*
* 11/01/94 - added a man page.
*
* 13/01/94 - some changes for easier porting to other Unix systems (tested
* on Ultrix, SunOS and HPUX)
* - Version 0.3 released.
*
* 08/06/94 - Patches by Stuart Herbert - S.Herbert@shef.ac.uk
* Fixed attr_clear and the textbox stuff to work with ncurses 1.8.5
* Fixed the wordwrap routine - it'll actually wrap properly now
* Added a more 3D look to everything - having your own rc file could
* prove 'interesting' to say the least :-)
* Added radiolist option
* - Version 0.4 released.
*/
#define __DIALOG_MAIN__
#include "dialog.priv.h"
#include <dialog.h>
#ifdef HAVE_NCURSES
#include "colors.h"
#endif
/*
* Do some initialization for dialog
*/
void init_dialog(void)
{
#if defined(LOCALE)
(void) setlocale(LC_ALL, "");
#endif
#ifdef HAVE_NCURSES
if (parse_rc() == -1) /* Read the configuration file */
exit(-1);
#endif
initscr(); /* Init curses */
keypad(stdscr, TRUE);
cbreak();
noecho();
#ifdef HAVE_NCURSES
if (use_colors || use_shadow) /* Set up colors */
color_setup();
#endif
/* Set screen to screen attribute */
attr_clear(stdscr, LINES, COLS, screen_attr);
wnoutrefresh(stdscr);
}
/* End of init_dialog() */
#ifdef HAVE_NCURSES
/*
* Setup for color display
*/
void color_setup(void)
{
int i;
if (has_colors()) { /* Terminal supports color? */
start_color();
/* Initialize color pairs */
for (i = 0; i < ATTRIBUTE_COUNT; i++)
init_pair(i+1, color_table[i][0], color_table[i][1]);
/* Setup color attributes */
for (i = 0; i < ATTRIBUTE_COUNT; i++)
attributes[i] = C_ATTR(color_table[i][2], i+1);
}
}
/* End of color_setup() */
#endif
/*
* Set window to attribute 'attr'
*/
void attr_clear(WINDOW *win, int height, int width, chtype attr)
{
int i, j;
wattrset(win, attr); /* Set window to attribute 'attr' */
for (i = 0; i < height; i++) {
wmove(win, i, 0);
for (j = 0; j < width; j++)
waddch(win, ' ');
}
}
/* End of attr_clear() */
/*
* 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 "\n" to represent a newline character or the real
* newline '\n', but in that case, auto wrap around will be disabled.
*/
void print_autowrap(WINDOW *win, unsigned char *prompt, int width, int y, int x)
{
int first = 1, cur_x, cur_y;
unsigned char tempstr[MAX_LEN+1], *word, *tempptr, *tempptr1;
strcpy(tempstr, prompt);
if ((strstr(tempstr, "\\n") != NULL) ||
(strchr(tempstr, '\n') != NULL)) { /* Prompt contains "\n" or '\n' */
word = tempstr;
cur_y = y;
wmove(win, cur_y, x);
while (1) {
tempptr = strstr(word, "\\n");
tempptr1 = strchr(word, '\n');
if (tempptr == NULL && tempptr1 == NULL)
break;
else if (tempptr == NULL) { /* No more "\n" */
tempptr = tempptr1;
tempptr[0] = '\0';
}
else if (tempptr1 == NULL) { /* No more '\n' */
tempptr[0] = '\0';
tempptr++;
}
else { /* Prompt contains both "\n" and '\n' */
if (strlen(tempptr)-2 < strlen(tempptr1)-1) {
tempptr = tempptr1;
tempptr[0] = '\0';
}
else {
tempptr[0] = '\0';
tempptr++;
}
}
waddstr(win, word);
word = tempptr + 1;
wmove(win, ++cur_y, x);
}
waddstr(win, word);
}
else if (strlen(tempstr) <= width-x*2) { /* If prompt is short */
wmove(win, y, (width - strlen(tempstr)) / 2);
waddstr(win, tempstr);
}
else {
cur_x = x;
cur_y = y;
/* Print prompt word by word, wrap around if necessary */
while ((word = strtok(first ? tempstr : NULL, " ")) != NULL) {
if (first) /* First iteration */
first = 0;
if (cur_x+strlen(word) >= width) { /* wrap around to next line */
cur_y++;
cur_x = x;
}
wmove(win, cur_y, cur_x);
waddstr(win, word);
getyx(win, cur_y, cur_x);
cur_x++;
}
}
}
/* End of print_autowrap() */
/*
* Print a button
*/
void print_button(WINDOW *win, unsigned char *label, int y, int x, int selected)
{
int i, temp;
wmove(win, y, x);
wattrset(win, selected ? button_active_attr : button_inactive_attr);
waddstr(win, "<");
temp = strspn(label, " ");
label += temp;
wattrset(win, selected ? button_label_active_attr : button_label_inactive_attr);
for (i = 0; i < temp; i++)
waddch(win, ' ');
wattrset(win, selected ? button_key_active_attr : button_key_inactive_attr);
waddch(win, label[0]);
wattrset(win, selected ? button_label_active_attr : button_label_inactive_attr);
waddstr(win, label+1);
wattrset(win, selected ? button_active_attr : button_inactive_attr);
waddstr(win, ">");
wmove(win, y, x+temp+1);
}
/* End of print_button() */
/*
* Draw a rectangular box with line drawing characters
*/
void draw_box(WINDOW *win, int y, int x, int height, int width, chtype box, chtype border)
{
int i, j;
wattrset(win, 0);
for (i = 0; i < height; i++) {
wmove(win, y + i, x);
for (j = 0; j < width; j++)
if (!i && !j)
waddch(win, border | ACS_ULCORNER);
else if (i == height-1 && !j)
waddch(win, border | ACS_LLCORNER);
else if (!i && j == width-1)
waddch(win, box | ACS_URCORNER);
else if (i == height-1 && j == width-1)
waddch(win, box | ACS_LRCORNER);
else if (!i)
waddch(win, border | ACS_HLINE);
else if (i == height-1)
waddch(win, box | ACS_HLINE);
else if (!j)
waddch(win, border | ACS_VLINE);
else if (j == width-1)
waddch(win, box | ACS_VLINE);
else
waddch(win, box | ' ');
}
}
/* End of draw_box() */
#ifdef HAVE_NCURSES
/*
* Draw shadows along the right and bottom edge to give a more 3D look
* to the boxes
*/
void draw_shadow(WINDOW *win, int y, int x, int height, int width)
{
int i;
if (has_colors()) { /* Whether terminal supports color? */
wattrset(win, shadow_attr);
wmove(win, y + height, x + 2);
for (i = 0; i < width; i++)
waddch(win, winch(win) & A_CHARTEXT);
for (i = y + 1; i < y + height + 1; i++) {
wmove(win, i, x + width);
waddch(win, winch(win) & A_CHARTEXT);
waddch(win, winch(win) & A_CHARTEXT);
}
wnoutrefresh(win);
}
}
/* End of draw_shadow() */
#endif
void dialog_clear(void)
{
attr_clear(stdscr, LINES, COLS, screen_attr);
}
void dialog_update(void)
{
refresh();
}
void end_dialog(void)
{
endwin();
}

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/*
* menubox.c -- implements the menu box
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "dialog.priv.h"
#include <dialog.h>
static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int choice, int selected);
static int menu_width, tag_x, item_x;
/*
* Display a menu for choosing among a number of options
*/
int dialog_menu(unsigned char *title, unsigned char *prompt, int height, int width, int menu_height, int item_no, unsigned char **items, unsigned char *result)
{
int i, x, y, cur_x, cur_y, box_x, box_y, key = 0, button = 0, choice = 0,
scroll = 0, max_choice;
WINDOW *dialog, *menu;
max_choice = MIN(menu_height, item_no);
/* center dialog box on screen */
x = (COLS - width)/2;
y = (LINES - height)/2;
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(stdscr, y, x, height, width);
#endif
dialog = newwin(height, width, y, x);
keypad(dialog, TRUE);
draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
wattrset(dialog, border_attr);
wmove(dialog, height-3, 0);
waddch(dialog, ACS_LTEE);
for (i = 0; i < width-2; i++)
waddch(dialog, ACS_HLINE);
wattrset(dialog, dialog_attr);
waddch(dialog, ACS_RTEE);
wmove(dialog, height-2, 1);
for (i = 0; i < width-2; i++)
waddch(dialog, ' ');
if (title != NULL) {
wattrset(dialog, title_attr);
wmove(dialog, 0, (width - strlen(title))/2 - 1);
waddch(dialog, ' ');
waddstr(dialog, title);
waddch(dialog, ' ');
}
wattrset(dialog, dialog_attr);
print_autowrap(dialog, prompt, width, 1, 3);
menu_width = width-6;
getyx(dialog, cur_y, cur_x);
box_y = cur_y + 1;
box_x = (width - menu_width)/2 - 1;
/* create new window for the menu */
menu = subwin(dialog, menu_height, menu_width, y + box_y + 1, x + box_x + 1);
keypad(menu, TRUE);
/* draw a box around the menu items */
draw_box(dialog, box_y, box_x, menu_height+2, menu_width+2, menubox_border_attr, menubox_attr);
tag_x = 0;
item_x = 0;
/* Find length of longest item in order to center menu */
for (i = 0; i < item_no; i++) {
tag_x = MAX(tag_x, strlen(items[i*2]) + strlen(items[i*2 + 1]) + 2);
item_x = MAX(item_x, strlen(items[i*2]));
}
tag_x = (menu_width - tag_x) / 2;
item_x = tag_x + item_x + 2;
/* Print the menu */
for (i = 0; i < max_choice; i++)
print_item(menu, items[i*2], items[i*2 + 1], i, i == choice);
wnoutrefresh(menu);
if (menu_height < item_no) {
wattrset(dialog, darrow_attr);
wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 1);
waddch(dialog, ACS_DARROW);
wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 2);
waddstr(dialog,"(+)");
}
x = width/2-11;
y = height-2;
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wrefresh(dialog);
while (key != ESC) {
key = wgetch(dialog);
/* Check if key pressed matches first character of any item tag in menu */
for (i = 0; i < max_choice; i++)
if (key < 0x100 && toupper(key) == toupper(items[(scroll+i)*2][0]))
break;
if (i < max_choice || (key >= '1' && key <= MIN('9', '0'+max_choice)) ||
key == KEY_UP || key == KEY_DOWN || key == '-' || key == '+') {
if (key >= '1' && key <= MIN('9', '0'+max_choice))
i = key - '1';
else if (key == KEY_UP || key == '-') {
if (!choice) {
if (scroll) {
#ifdef BROKEN_WSCRL
/* wscrl() in ncurses 1.8.1 seems to be broken, causing a segmentation
violation when scrolling windows of height = 4, so scrolling is not
used for now */
scroll--;
getyx(dialog, cur_y, cur_x); /* Save cursor position */
/* Reprint menu to scroll down */
for (i = 0; i < max_choice; i++)
print_item(menu, items[(scroll+i)*2], items[(scroll+i)*2 + 1], i, i == choice);
#else
/* Scroll menu down */
getyx(dialog, cur_y, cur_x); /* Save cursor position */
if (menu_height > 1) {
/* De-highlight current first item before scrolling down */
print_item(menu, items[scroll*2], items[scroll*2 + 1], 0, FALSE);
scrollok(menu, TRUE);
wscrl(menu, -1);
scrollok(menu, FALSE);
}
scroll--;
print_item(menu, items[scroll*2], items[scroll*2 + 1], 0, TRUE);
#endif
wnoutrefresh(menu);
/* print the up/down arrows */
wmove(dialog, box_y, box_x + tag_x + 1);
wattrset(dialog, scroll ? uarrow_attr : menubox_attr);
waddch(dialog, scroll ? ACS_UARROW : ACS_HLINE);
wmove(dialog, box_y, box_x + tag_x + 2);
waddch(dialog, scroll ? '(' : ACS_HLINE);
wmove(dialog, box_y, box_x + tag_x + 3);
waddch(dialog, scroll ? '-' : ACS_HLINE);
wmove(dialog, box_y, box_x + tag_x + 4);
waddch(dialog, scroll ? ')' : ACS_HLINE);
wattrset(dialog, darrow_attr);
wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 1);
waddch(dialog, ACS_DARROW);
wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 2);
waddstr(dialog,"(+)");
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
continue; /* wait for another key press */
}
else
i = choice - 1;
}
else if (key == KEY_DOWN || key == '+')
if (choice == max_choice - 1) {
if (scroll+choice < item_no-1) {
#ifdef BROKEN_WSCRL
/* wscrl() in ncurses 1.8.1 seems to be broken, causing a segmentation
violation when scrolling windows of height = 4, so scrolling is not
used for now */
scroll++;
getyx(dialog, cur_y, cur_x); /* Save cursor position */
/* Reprint menu to scroll up */
for (i = 0; i < max_choice; i++)
print_item(menu, items[(scroll+i)*2], items[(scroll+i)*2 + 1], i, i == choice);
#else
/* Scroll menu up */
getyx(dialog, cur_y, cur_x); /* Save cursor position */
if (menu_height > 1) {
/* De-highlight current last item before scrolling up */
print_item(menu, items[(scroll+max_choice-1)*2], items[(scroll+max_choice-1)*2 + 1], max_choice-1, FALSE);
scrollok(menu, TRUE);
scroll(menu);
scrollok(menu, FALSE);
}
scroll++;
print_item(menu, items[(scroll+max_choice-1)*2], items[(scroll+max_choice-1)*2 + 1], max_choice-1, TRUE);
#endif
wnoutrefresh(menu);
/* print the up/down arrows */
wattrset(dialog, uarrow_attr);
wmove(dialog, box_y, box_x + tag_x + 1);
waddch(dialog, ACS_UARROW);
wmove(dialog, box_y, box_x + tag_x + 2);
waddstr(dialog,"(-)");
wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 1);
wattrset(dialog, scroll+choice < item_no-1 ? darrow_attr : menubox_border_attr);
waddch(dialog, scroll+choice < item_no-1 ? ACS_DARROW : ACS_HLINE);
wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 2);
waddch(dialog, scroll+choice < item_no-1 ? '(' : ACS_HLINE);
wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 3);
waddch(dialog, scroll+choice < item_no-1 ? '+' : ACS_HLINE);
wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 4);
waddch(dialog, scroll+choice < item_no-1 ? ')' : ACS_HLINE);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
continue; /* wait for another key press */
}
else
i = choice + 1;
if (i != choice) {
/* De-highlight current item */
getyx(dialog, cur_y, cur_x); /* Save cursor position */
print_item(menu, items[(scroll+choice)*2], items[(scroll+choice)*2 + 1], choice, FALSE);
/* Highlight new item */
choice = i;
print_item(menu, items[(scroll+choice)*2], items[(scroll+choice)*2 + 1], choice, TRUE);
wnoutrefresh(menu);
wmove(dialog, cur_y, cur_x); /* Restore cursor to previous position */
wrefresh(dialog);
}
continue; /* wait for another key press */
}
switch (key) {
case 'O':
case 'o':
delwin(dialog);
strcpy(result, items[(scroll+choice)*2]);
return 0;
case 'C':
case 'c':
delwin(dialog);
return 1;
case KEY_BTAB:
case TAB:
case KEY_LEFT:
case KEY_RIGHT:
if (!button) {
button = 1; /* Indicates "Cancel" button is selected */
print_button(dialog, " OK ", y, x, FALSE);
print_button(dialog, "Cancel", y, x+14, TRUE);
}
else {
button = 0; /* Indicates "OK" button is selected */
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
}
wrefresh(dialog);
break;
case ' ':
case '\n':
delwin(dialog);
if (!button)
strcpy(result, items[(scroll+choice)*2]);
return button;
case ESC:
break;
}
}
delwin(dialog);
return -1; /* ESC pressed */
}
/* End of dialog_menu() */
/*
* Print menu item
*/
static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int choice, int selected)
{
int i;
/* Clear 'residue' of last item */
wattrset(win, menubox_attr);
wmove(win, choice, 0);
for (i = 0; i < menu_width; i++)
waddch(win, ' ');
wmove(win, choice, tag_x);
wattrset(win, selected ? tag_key_selected_attr : tag_key_attr);
waddch(win, tag[0]);
wattrset(win, selected ? tag_selected_attr : tag_attr);
waddstr(win, tag + 1);
wmove(win, choice, item_x);
wattrset(win, selected ? item_selected_attr : item_attr);
waddstr(win, item);
}
/* End of print_item() */

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/*
* msgbox.c -- implements the message box and info box
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "dialog.priv.h"
#include <dialog.h>
/*
* Display a message box. Program will pause and display an "OK" button
* if the parameter 'pause' is non-zero.
*/
int dialog_msgbox(unsigned char *title, unsigned char *prompt, int height, int width, int pause)
{
int i, x, y, key = 0;
WINDOW *dialog;
/* center dialog box on screen */
x = (COLS - width)/2;
y = (LINES - height)/2;
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(stdscr, y, x, height, width);
#endif
dialog = newwin(height, width, y, x);
keypad(dialog, TRUE);
draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
if (title != NULL) {
wattrset(dialog, title_attr);
wmove(dialog, 0, (width - strlen(title))/2 - 1);
waddch(dialog, ' ');
waddstr(dialog, title);
waddch(dialog, ' ');
}
wattrset(dialog, dialog_attr);
print_autowrap(dialog, prompt, width-2, 1, 2);
if (pause) {
wattrset(dialog, border_attr);
wmove(dialog, height-3, 0);
waddch(dialog, ACS_LTEE);
for (i = 0; i < width-2; i++)
waddch(dialog, ACS_HLINE);
wattrset(dialog, dialog_attr);
waddch(dialog, ACS_RTEE);
wmove(dialog, height-2, 1);
for (i = 0; i < width-2; i++)
waddch(dialog, ' ');
print_button(dialog, " OK ", height-2, width/2-4, TRUE);
wrefresh(dialog);
while (key != ESC && key != '\n' && key != ' ')
key = wgetch(dialog);
}
else {
key = '\n';
wrefresh(dialog);
}
delwin(dialog);
return (key == ESC ? -1 : 0);
}
/* End of dialog_msgbox() */

368
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/*
* radiolist.c -- implements the radiolist box
*
* AUTHOR: Stuart Herbert - S.Herbert@sheffield.ac.uk
* (from checklist.c by Savio Lam (lam836@cs.cuhk.hk))
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "dialog.priv.h"
#include <dialog.h>
static void print_item(WINDOW *win, char *tag, char *item, int status, int choice, int selected);
static int list_width, check_x, item_x;
/*
* Display a dialog box with a list of options that can be turned on or off
*/
int dialog_radiolist(char *title, char *prompt, int height, int width, int list_height, int item_no, unsigned char **items, unsigned char *result)
{
int i, x, y, cur_x, cur_y, box_x, box_y, key = 0, button = 0, choice = 0,
scroll = 0, max_choice, *status, was_on = 0;
WINDOW *dialog, *list;
/* Allocate space for storing item on/off status */
if ((status = malloc(sizeof(int)*item_no)) == NULL) {
endwin();
fprintf(stderr, "\nCan't allocate memory in dialog_radiolist().\n");
exit(-1);
}
/* Initializes status */
for (i = 0; i < item_no; i++) {
status[i] = !strcasecmp(items[i*3 + 2], "on");
if (status[i])
if (was_on) {
endwin();
fprintf(stderr, "\nOnly one status can be ON in dialog_radiolist().\n");
exit(-1);
} else
was_on = 1;
}
max_choice = MIN(list_height, item_no);
/* center dialog box on screen */
x = (COLS - width)/2;
y = (LINES - height)/2;
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(stdscr, y, x, height, width);
#endif
dialog = newwin(height, width, y, x);
keypad(dialog, TRUE);
draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
wattrset(dialog, border_attr);
wmove(dialog, height-3, 0);
waddch(dialog, ACS_LTEE);
for (i = 0; i < width-2; i++)
waddch(dialog, ACS_HLINE);
wattrset(dialog, dialog_attr);
waddch(dialog, ACS_RTEE);
wmove(dialog, height-2, 1);
for (i = 0; i < width-2; i++)
waddch(dialog, ' ');
if (title != NULL) {
wattrset(dialog, title_attr);
wmove(dialog, 0, (width - strlen(title))/2 - 1);
waddch(dialog, ' ');
waddstr(dialog, title);
waddch(dialog, ' ');
}
wattrset(dialog, dialog_attr);
print_autowrap(dialog, prompt, width, 1, 3);
list_width = width-6;
getyx(dialog, cur_y, cur_x);
box_y = cur_y + 1;
box_x = (width - list_width)/2 - 1;
/* create new window for the list */
list = subwin(dialog, list_height, list_width, y + box_y + 1, x + box_x + 1);
keypad(list, TRUE);
/* draw a box around the list items */
draw_box(dialog, box_y, box_x, list_height+2, list_width+2, menubox_border_attr, menubox_attr);
check_x = 0;
item_x = 0;
/* Find length of longest item in order to center radiolist */
for (i = 0; i < item_no; i++) {
check_x = MAX(check_x, strlen(items[i*3]) + strlen(items[i*3 + 1]) + 6);
item_x = MAX(item_x, strlen(items[i*3]));
}
check_x = (list_width - check_x) / 2;
item_x = check_x + item_x + 6;
/* Print the list */
for (i = 0; i < max_choice; i++)
print_item(list, items[i*3], items[i*3 + 1], status[i], i, i == choice);
wnoutrefresh(list);
if (list_height < item_no) {
wattrset(dialog, darrow_attr);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 5);
waddch(dialog, ACS_DARROW);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 6);
waddstr(dialog, "(+)");
}
x = width/2-11;
y = height-2;
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wrefresh(dialog);
while (key != ESC) {
key = wgetch(dialog);
/* Check if key pressed matches first character of any item tag in list */
for (i = 0; i < max_choice; i++)
if (toupper(key) == toupper(items[(scroll+i)*3][0]))
break;
if (i < max_choice || (key >= '1' && key <= MIN('9', '0'+max_choice)) ||
key == KEY_UP || key == KEY_DOWN || key == ' ' ||
key == '+' || key == '-' ) {
if (key >= '1' && key <= MIN('9', '0'+max_choice))
i = key - '1';
else if (key == KEY_UP || key == '-') {
if (!choice) {
if (scroll) {
#ifdef BROKEN_WSCRL
/* wscrl() in ncurses 1.8.1 seems to be broken, causing a segmentation
violation when scrolling windows of height = 4, so scrolling is not
used for now */
scroll--;
getyx(dialog, cur_y, cur_x); /* Save cursor position */
/* Reprint list to scroll down */
for (i = 0; i < max_choice; i++)
print_item(list, items[(scroll+i)*3], items[(scroll+i)*3 + 1], status[scroll+i], i, i == choice);
#else
/* Scroll list down */
getyx(dialog, cur_y, cur_x); /* Save cursor position */
if (list_height > 1) {
/* De-highlight current first item before scrolling down */
print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0, FALSE);
scrollok(list, TRUE);
wscrl(list, -1);
scrollok(list, FALSE);
}
scroll--;
print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0, TRUE);
#endif
wnoutrefresh(list);
/* print the up/down arrows */
wmove(dialog, box_y, box_x + check_x + 5);
wattrset(dialog, scroll ? uarrow_attr : menubox_attr);
waddch(dialog, scroll ? ACS_UARROW : ACS_HLINE);
wmove(dialog, box_y, box_x + check_x + 6);
waddch(dialog, scroll ? '(' : ACS_HLINE);
wmove(dialog, box_y, box_x + check_x + 7);
waddch(dialog, scroll ? '-' : ACS_HLINE);
wmove(dialog, box_y, box_x + check_x + 8);
waddch(dialog, scroll ? ')' : ACS_HLINE);
wattrset(dialog, darrow_attr);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 5);
waddch(dialog, ACS_DARROW);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 6);
waddch(dialog, '(');
wmove(dialog, box_y + list_height + 1, box_x + check_x + 7);
waddch(dialog, '+');
wmove(dialog, box_y + list_height + 1, box_x + check_x + 8);
waddch(dialog, ')');
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
continue; /* wait for another key press */
}
else
i = choice - 1;
}
else if (key == KEY_DOWN || key == '+') {
if (choice == max_choice - 1) {
if (scroll+choice < item_no-1) {
#ifdef BROKEN_WSCRL
/* wscrl() in ncurses 1.8.1 seems to be broken, causing a segmentation
violation when scrolling windows of height = 4, so scrolling is not
used for now */
scroll++;
getyx(dialog, cur_y, cur_x); /* Save cursor position */
/* Reprint list to scroll up */
for (i = 0; i < max_choice; i++)
print_item(list, items[(scroll+i)*3], items[(scroll+i)*3 + 1], status[scroll+i], i, i == choice);
#else
/* Scroll list up */
getyx(dialog, cur_y, cur_x); /* Save cursor position */
if (list_height > 1) {
/* De-highlight current last item before scrolling up */
print_item(list, items[(scroll+max_choice-1)*3], items[(scroll+max_choice-1)*3 + 1], status[scroll+max_choice-1], max_choice-1, FALSE);
scrollok(list, TRUE);
scroll(list);
scrollok(list, FALSE);
}
scroll++;
print_item(list, items[(scroll+max_choice-1)*3], items[(scroll+max_choice-1)*3 + 1], status[scroll+max_choice-1], max_choice-1, TRUE);
#endif
wnoutrefresh(list);
/* print the up/down arrows */
wattrset(dialog, uarrow_attr);
wmove(dialog, box_y, box_x + check_x + 5);
waddch(dialog, ACS_UARROW);
wmove(dialog, box_y, box_x + check_x + 6);
waddstr(dialog, "(-)");
wmove(dialog, box_y + list_height + 1, box_x + check_x + 5);
wattrset(dialog, scroll+choice < item_no-1 ? darrow_attr : menubox_border_attr);
waddch(dialog, scroll+choice < item_no-1 ? ACS_DARROW : ACS_HLINE);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 6);
waddch(dialog, scroll+choice < item_no-1 ? '(' : ACS_HLINE);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 7);
waddch(dialog, scroll+choice < item_no-1 ? '+' : ACS_HLINE);
wmove(dialog, box_y + list_height + 1, box_x + check_x + 8);
waddch(dialog, scroll+choice < item_no-1 ? ')' : ACS_HLINE);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
continue; /* wait for another key press */
}
else
i = choice + 1;
}
else if (key == ' ') { /* Toggle item status */
if (!status[scroll+choice])
{
for (i=0; i<item_no; i++)
status[i]=0;
status[scroll+choice]=1;
getyx(dialog, cur_y, cur_x); /* Save cursor position */
for (i = 0; i < max_choice; i++)
print_item(list, items[(scroll+i)*3], items[(scroll+i)*3 + 1], status[scroll+i], i, i == choice);
wnoutrefresh(list);
wmove(dialog, cur_y, cur_x); /* Restore cursor to previous position */
wrefresh(dialog);
}
continue; /* wait for another key press */
}
if (i != choice) {
/* De-highlight current item */
getyx(dialog, cur_y, cur_x); /* Save cursor position */
print_item(list, items[(scroll+choice)*3], items[(scroll+choice)*3 +1], status[scroll+choice], choice, FALSE);
/* Highlight new item */
choice = i;
print_item(list, items[(scroll+choice)*3], items[(scroll+choice)*3 + 1], status[scroll+choice], choice, TRUE);
wnoutrefresh(list);
wmove(dialog, cur_y, cur_x); /* Restore cursor to previous position */
wrefresh(dialog);
}
continue; /* wait for another key press */
}
switch (key) {
case 'O':
case 'o':
delwin(dialog);
*result = '\0';
for (i = 0; i < item_no; i++)
if (status[i]) {
strcpy(result, items[i*3]);
break;
}
free(status);
return 0;
case 'C':
case 'c':
delwin(dialog);
free(status);
return 1;
case KEY_BTAB:
case TAB:
case KEY_LEFT:
case KEY_RIGHT:
if (!button) {
button = 1; /* Indicates "Cancel" button is selected */
print_button(dialog, " OK ", y, x, FALSE);
print_button(dialog, "Cancel", y, x+14, TRUE);
}
else {
button = 0; /* Indicates "OK" button is selected */
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
}
wrefresh(dialog);
break;
case ' ':
case '\n':
delwin(dialog);
if (!button) {
*result = '\0';
for (i = 0; i < item_no; i++)
if (status[i]) {
strcpy(result, items[i*3]);
break;
}
}
free(status);
return button;
case ESC:
break;
}
}
delwin(dialog);
free(status);
return -1; /* ESC pressed */
}
/* End of dialog_radiolist() */
/*
* Print list item
*/
static void print_item(WINDOW *win, char *tag, char *item, int status, int choice, int selected)
{
int i;
/* Clear 'residue' of last item */
wattrset(win, menubox_attr);
wmove(win, choice, 0);
for (i = 0; i < list_width; i++)
waddch(win, ' ');
wmove(win, choice, check_x);
wattrset(win, selected ? check_selected_attr : check_attr);
wprintw(win, "(%c)", status ? '*' : ' ');
wattrset(win, menubox_attr);
waddch(win, ' ');
wattrset(win, selected ? tag_key_selected_attr : tag_key_attr);
waddch(win, tag[0]);
wattrset(win, selected ? tag_selected_attr : tag_attr);
waddstr(win, tag + 1);
wmove(win, choice, item_x);
wattrset(win, selected ? item_selected_attr : item_attr);
waddstr(win, item);
}
/* End of print_item() */

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/*
* rc.c -- routines for processing the configuration file
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "dialog.priv.h"
#include <dialog.h>
#include "colors.h"
#include "rc.h"
static unsigned char *attr_to_str(int fg, int bg, int hl);
static int str_to_attr(unsigned char *str, int *fg, int *bg, int *hl);
static int parse_line(unsigned char *line, unsigned char **var, unsigned char **value);
/*
* Create the configuration file
*/
void dialog_create_rc(unsigned char *filename)
{
int i;
FILE *rc_file;
if ((rc_file = fopen(filename, "wt")) == NULL) {
fprintf(stderr, "\nError opening file for writing in create_rc().\n");
exit(-1);
}
fprintf(rc_file, "#\
\n# Run-time configuration file for dialog\
\n#\
\n# Automatically generated by \"dialog --create-rc <file>\"\
\n#\
\n#\
\n# Types of values:\
\n#\
\n# Number - <number>\
\n# String - \"string\"\
\n# Boolean - <ON|OFF>\
\n# Attribute - (foreground,background,highlight?)\
\n#\n\n");
/* Print an entry for each configuration variable */
for (i = 0; i < VAR_COUNT; i++) {
fprintf(rc_file, "\n# %s\n", vars[i].comment); /* print comment */
switch (vars[i].type) {
case VAL_INT:
fprintf(rc_file, "%s = %d\n", vars[i].name, *((int *) vars[i].var));
break;
case VAL_STR:
fprintf(rc_file, "%s = \"%s\"\n", vars[i].name, (unsigned char *) vars[i].var);
break;
case VAL_BOOL:
fprintf(rc_file, "%s = %s\n", vars[i].name, *((bool *) vars[i].var) ? "ON" : "OFF");
break;
case VAL_ATTR:
fprintf(rc_file, "%s = %s\n", vars[i].name, attr_to_str(((int *) vars[i].var)[0], ((int *) vars[i].var)[1], ((int *) vars[i].var)[2]));
break;
}
}
fclose(rc_file);
}
/* End of create_rc() */
/*
* Parse the configuration file and set up variables
*/
int parse_rc(void)
{
int i, l = 1, parse, fg, bg, hl;
unsigned char str[MAX_LEN+1], *var, *value, *tempptr;
FILE *rc_file;
/*
*
* At start, 'dialog' determines the settings to use as follows:
*
* a) if environment variable DIALOGRC is set, it's value determines the
* name of the configuration file.
*
* b) if the file in (a) can't be found, use the file $HOME/.dialogrc
* as the configuration file.
*
* c) if the file in (b) can't be found, use compiled in defaults.
*
*/
if ((tempptr = getenv("DIALOGRC")) != NULL)
rc_file = fopen(tempptr, "rt");
if (tempptr == NULL || rc_file == NULL) { /* step (a) failed? */
/* try step (b) */
if ((tempptr = getenv("HOME")) == NULL)
return 0; /* step (b) failed, use default values */
if (tempptr[0] == '\0' || lastch(tempptr) == '/')
sprintf(str, "%s%s", tempptr, DIALOGRC);
else
sprintf(str, "%s/%s", tempptr, DIALOGRC);
if ((rc_file = fopen(str, "rt")) == NULL)
return 0; /* step (b) failed, use default values */
}
/* Scan each line and set variables */
while (fgets(str, MAX_LEN, rc_file) != NULL) {
if (lastch(str) != '\n') { /* ignore rest of file if line too long */
fprintf(stderr, "\nParse error: line %d of configuration file too long.\n", l);
fclose(rc_file);
return -1; /* parse aborted */
}
else {
lastch(str) = '\0';
parse = parse_line(str, &var, &value); /* parse current line */
switch (parse) {
case LINE_BLANK: /* ignore blank lines and comments */
case LINE_COMMENT:
break;
case LINE_OK:
/* search table for matching config variable name */
for (i = 0; i < VAR_COUNT && strcmp(vars[i].name, var); i++);
if (i == VAR_COUNT) { /* no match */
fprintf(stderr, "\nParse error: unknown variable at line %d of configuration file.\n", l);
return -1; /* parse aborted */
}
else { /* variable found in table, set run time variables */
switch (vars[i].type) {
case VAL_INT:
*((int *) vars[i].var) = atoi(value);
break;
case VAL_STR:
if (!isquote(value[0]) || !isquote(lastch(value)) || strlen(value) < 2) {
fprintf(stderr, "\nParse error: string value expected at line %d of configuration file.\n", l);
return -1; /* parse aborted */
}
else {
/* remove the (") quotes */
value++;
lastch(value) = '\0';
strcpy((unsigned char *) vars[i].var, value);
}
break;
case VAL_BOOL:
if (!strcasecmp(value, "ON"))
*((bool *) vars[i].var) = TRUE;
else if (!strcasecmp(value, "OFF"))
*((bool *) vars[i].var) = FALSE;
else {
fprintf(stderr, "\nParse error: boolean value expected at line %d of configuration file.\n", l);
return -1; /* parse aborted */
}
break;
case VAL_ATTR:
if (str_to_attr(value, &fg, &bg, &hl) == -1) {
fprintf(stderr, "\nParse error: attribute value expected at line %d of configuration file.\n", l);
return -1; /* parse aborted */
}
((int *) vars[i].var)[0] = fg;
((int *) vars[i].var)[1] = bg;
((int *) vars[i].var)[2] = hl;
break;
}
}
break;
case LINE_ERROR:
fprintf(stderr, "\nParse error: syntax error at line %d of configuration file.\n", l);
return -1; /* parse aborted */
}
}
l++; /* next line */
}
fclose(rc_file);
return 0; /* parse successful */
}
/* End of parse_rc() */
/*
* Convert an attribute to a string representation like this:
*
* "(foreground,background,highlight)"
*/
static unsigned char *attr_to_str(int fg, int bg, int hl)
{
int i;
static unsigned char str[MAX_LEN+1];
strcpy(str, "(");
/* foreground */
for (i = 0; fg != color_names[i].value; i++);
strcat(str, color_names[i].name);
strcat(str, ",");
/* background */
for (i = 0; bg != color_names[i].value; i++);
strcat(str, color_names[i].name);
/* highlight */
strcat(str, hl ? ",ON)" : ",OFF)");
return str;
}
/* End of attr_to_str() */
/*
* Extract the foreground, background and highlight values from an attribute
* represented as a string in this form:
*
* "(foreground,background,highlight)"
*/
static int str_to_attr(unsigned char *str, int *fg, int *bg, int *hl)
{
int i = 0, j, get_fg = 1;
unsigned char tempstr[MAX_LEN+1], *part;
if (str[0] != '(' || lastch(str) != ')')
return -1; /* invalid representation */
/* remove the parenthesis */
strcpy(tempstr, str + 1);
lastch(tempstr) = '\0';
/* get foreground and background */
while (1) {
/* skip white space before fg/bg string */
while (whitespace(tempstr[i]) && tempstr[i] != '\0') i++;
if (tempstr[i] == '\0')
return -1; /* invalid representation */
part = tempstr + i; /* set 'part' to start of fg/bg string */
/* find end of fg/bg string */
while(!whitespace(tempstr[i]) && tempstr[i] != ',' && tempstr[i] != '\0') i++;
if (tempstr[i] == '\0')
return -1; /* invalid representation */
else if (whitespace(tempstr[i])) { /* not yet ',' */
tempstr[i++] = '\0';
/* skip white space before ',' */
while(whitespace(tempstr[i]) && tempstr[i] != '\0') i++;
if (tempstr[i] != ',')
return -1; /* invalid representation */
}
tempstr[i++] = '\0'; /* skip the ',' */
for (j = 0; j < COLOR_COUNT && strcasecmp(part, color_names[j].name); j++);
if (j == COLOR_COUNT) /* invalid color name */
return -1;
if (get_fg) {
*fg = color_names[j].value;
get_fg = 0; /* next we have to get the background */
}
else {
*bg = color_names[j].value;
break;
}
} /* got foreground and background */
/* get highlight */
/* skip white space before highlight string */
while (whitespace(tempstr[i]) && tempstr[i] != '\0') i++;
if (tempstr[i] == '\0')
return -1; /* invalid representation */
part = tempstr + i; /* set 'part' to start of highlight string */
/* trim trailing white space from highlight string */
i = strlen(part) - 1;
while(whitespace(part[i])) i--;
part[i+1] = '\0';
if (!strcasecmp(part, "ON"))
*hl = TRUE;
else if (!strcasecmp(part, "OFF"))
*hl = FALSE;
else
return -1; /* invalid highlight value */
return 0;
}
/* End of str_to_attr() */
/*
* Parse a line in the configuration file
*
* Each line is of the form: "variable = value". On exit, 'var' will contain
* the variable name, and 'value' will contain the value string.
*
* Return values:
*
* LINE_BLANK - line is blank
* LINE_COMMENT - line is comment
* LINE_OK - line is ok
* LINE_ERROR - syntax error in line
*/
static int parse_line(unsigned char *line, unsigned char **var, unsigned char **value)
{
int i = 0;
/* ignore white space at beginning of line */
while(whitespace(line[i]) && line[i] != '\0') i++;
if (line[i] == '\0') /* line is blank */
return LINE_BLANK;
else if (line[i] == '#') /* line is comment */
return LINE_COMMENT;
else if (line[i] == '=') /* variables names can't strart with a '=' */
return LINE_ERROR;
/* set 'var' to variable name */
*var = line + i++; /* skip to next character */
/* find end of variable name */
while(!whitespace(line[i]) && line[i] != '=' && line[i] != '\0') i++;
if (line[i] == '\0') /* syntax error */
return LINE_ERROR;
else if (line[i] == '=')
line[i++] = '\0';
else {
line[i++] = '\0';
/* skip white space before '=' */
while(whitespace(line[i]) && line[i] != '\0') i++;
if (line[i] != '=') /* syntax error */
return LINE_ERROR;
else
i++; /* skip the '=' */
}
/* skip white space after '=' */
while(whitespace(line[i]) && line[i] != '\0') i++;
if (line[i] == '\0')
return LINE_ERROR;
else
*value = line + i; /* set 'value' to value string */
/* trim trailing white space from 'value' */
i = strlen(*value) - 1;
while(whitespace((*value)[i])) i--;
(*value)[i+1] = '\0';
return LINE_OK; /* no syntax error in line */
}
/* End of parse_line() */

222
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/*
* rc.h -- declarations for configuration file processing
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define DIALOGRC ".dialogrc"
#define VAR_LEN 30
#define COMMENT_LEN 70
/* Types of values */
#define VAL_INT 0
#define VAL_STR 1
#define VAL_BOOL 2
#define VAL_ATTR 3
/* Type of line in configuration file */
#define LINE_BLANK 2
#define LINE_COMMENT 1
#define LINE_OK 0
#define LINE_ERROR -1
/* number of configuration variables */
#define VAR_COUNT (sizeof(vars) / sizeof(vars_st))
/* check if character is white space */
#define whitespace(c) (c == ' ' || c == '\t')
/* check if character is string quoting characters */
#define isquote(c) (c == '"' || c == '\'')
/* get last character of string */
#define lastch(str) str[strlen(str)-1]
/*
* Configuration variables
*/
typedef struct {
unsigned char name[VAR_LEN]; /* name of configuration variable as in DIALOGRC */
void *var; /* address of actually variable to change */
int type; /* type of value */
unsigned char comment[COMMENT_LEN]; /* comment to put in "rc" file */
} vars_st;
vars_st vars[] = {
{ "use_shadow",
&use_shadow,
VAL_BOOL,
"Shadow dialog boxes? This also turns on color." },
{ "use_colors",
&use_colors,
VAL_BOOL,
"Turn color support ON or OFF" },
{ "screen_color",
color_table[0],
VAL_ATTR,
"Screen color" },
{ "shadow_color",
color_table[1],
VAL_ATTR,
"Shadow color" },
{ "dialog_color",
color_table[2],
VAL_ATTR,
"Dialog box color" },
{ "title_color",
color_table[3],
VAL_ATTR,
"Dialog box title color" },
{ "border_color",
color_table[4],
VAL_ATTR,
"Dialog box border color" },
{ "button_active_color",
color_table[5],
VAL_ATTR,
"Active button color" },
{ "button_inactive_color",
color_table[6],
VAL_ATTR,
"Inactive button color" },
{ "button_key_active_color",
color_table[7],
VAL_ATTR,
"Active button key color" },
{ "button_key_inactive_color",
color_table[8],
VAL_ATTR,
"Inactive button key color" },
{ "button_label_active_color",
color_table[9],
VAL_ATTR,
"Active button label color" },
{ "button_label_inactive_color",
color_table[10],
VAL_ATTR,
"Inactive button label color" },
{ "inputbox_color",
color_table[11],
VAL_ATTR,
"Input box color" },
{ "inputbox_border_color",
color_table[12],
VAL_ATTR,
"Input box border color" },
{ "searchbox_color",
color_table[13],
VAL_ATTR,
"Search box color" },
{ "searchbox_title_color",
color_table[14],
VAL_ATTR,
"Search box title color" },
{ "searchbox_border_color",
color_table[15],
VAL_ATTR,
"Search box border color" },
{ "position_indicator_color",
color_table[16],
VAL_ATTR,
"File position indicator color" },
{ "menubox_color",
color_table[17],
VAL_ATTR,
"Menu box color" },
{ "menubox_border_color",
color_table[18],
VAL_ATTR,
"Menu box border color" },
{ "item_color",
color_table[19],
VAL_ATTR,
"Item color" },
{ "item_selected_color",
color_table[20],
VAL_ATTR,
"Selected item color" },
{ "tag_color",
color_table[21],
VAL_ATTR,
"Tag color" },
{ "tag_selected_color",
color_table[22],
VAL_ATTR,
"Selected tag color" },
{ "tag_key_color",
color_table[23],
VAL_ATTR,
"Tag key color" },
{ "tag_key_selected_color",
color_table[24],
VAL_ATTR,
"Selected tag key color" },
{ "check_color",
color_table[25],
VAL_ATTR,
"Check box color" },
{ "check_selected_color",
color_table[26],
VAL_ATTR,
"Selected check box color" },
{ "uarrow_color",
color_table[27],
VAL_ATTR,
"Up arrow color" },
{ "darrow_color",
color_table[28],
VAL_ATTR,
"Down arrow color" }
}; /* vars */
/*
* Routines to process configuration file
*/
int parse_rc(void);

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/*
* textbox.c -- implements the text box
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "dialog.priv.h"
#include <dialog.h>
static void back_lines(int n);
static void print_page(WINDOW *win, int height, int width);
static void print_line(WINDOW *win, int row, int width);
static unsigned char *get_line(void);
static int get_search_term(WINDOW *win, unsigned char *search_term, int height, int width);
static void print_position(WINDOW *win, int height, int width);
static int hscroll = 0, fd, file_size, bytes_read, begin_reached = 1,
end_reached = 0, page_length;
static unsigned char *buf, *page;
/*
* Display text from a file in a dialog box.
*/
int dialog_textbox(unsigned char *title, unsigned char *file, int height, int width)
{
int i, x, y, cur_x, cur_y, fpos, key = 0, dir, temp, temp1;
#ifdef HAVE_NCURSES
int passed_end;
#endif
unsigned char search_term[MAX_LEN+1], *tempptr, *found;
WINDOW *dialog, *text;
search_term[0] = '\0'; /* no search term entered yet */
/* Open input file for reading */
if ((fd = open(file, O_RDONLY)) == -1) {
endwin();
fprintf(stderr, "\nCan't open input file in dialog_textbox().\n");
exit(-1);
}
/* Get file size. Actually, 'file_size' is the real file size - 1,
since it's only the last byte offset from the beginning */
if ((file_size = lseek(fd, 0, SEEK_END)) == -1) {
endwin();
fprintf(stderr, "\nError getting file size in dialog_textbox().\n");
exit(-1);
}
/* Restore file pointer to beginning of file after getting file size */
if (lseek(fd, 0, SEEK_SET) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
exit(-1);
}
/* Allocate space for read buffer */
if ((buf = malloc(BUF_SIZE+1)) == NULL) {
endwin();
fprintf(stderr, "\nCan't allocate memory in dialog_textbox().\n");
exit(-1);
}
if ((bytes_read = read(fd, buf, BUF_SIZE)) == -1) {
endwin();
fprintf(stderr, "\nError reading file in dialog_textbox().\n");
exit(-1);
}
buf[bytes_read] = '\0'; /* mark end of valid data */
page = buf; /* page is pointer to start of page to be displayed */
/* center dialog box on screen */
x = (COLS - width)/2;
y = (LINES - height)/2;
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(stdscr, y, x, height, width);
#endif
dialog = newwin(height, width, y, x);
keypad(dialog, TRUE);
/* Create window for text region, used for scrolling text */
/* text = newwin(height-4, width-2, y+1, x+1); */
text = subwin(dialog, height-4, width-2, y+1, x+1);
keypad(text, TRUE);
draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
wattrset(dialog, border_attr);
wmove(dialog, height-3, 0);
waddch(dialog, ACS_LTEE);
for (i = 0; i < width-2; i++)
waddch(dialog, ACS_HLINE);
wattrset(dialog, dialog_attr);
waddch(dialog, ACS_RTEE);
wmove(dialog, height-2, 1);
for (i = 0; i < width-2; i++)
waddch(dialog, ' ');
if (title != NULL) {
wattrset(dialog, title_attr);
wmove(dialog, 0, (width - strlen(title))/2 - 1);
waddch(dialog, ' ');
waddstr(dialog, title);
waddch(dialog, ' ');
}
print_button(dialog, " EXIT ", height-2, width/2-4, TRUE);
wnoutrefresh(dialog);
getyx(dialog, cur_y, cur_x); /* Save cursor position */
/* Print first page of text */
attr_clear(text, height-4, width-2, dialog_attr);
print_page(text, height-4, width-2);
print_position(dialog, height, width);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
while ((key != ESC) && (key != '\n')) {
key = wgetch(dialog);
switch (key) {
case 'E': /* Exit */
case 'e':
delwin(dialog);
free(buf);
close(fd);
return 0;
case 'g': /* First page */
case KEY_HOME:
if (!begin_reached) {
begin_reached = 1;
/* First page not in buffer? */
if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
exit(-1);
}
if (fpos > bytes_read) { /* Yes, we have to read it in */
if (lseek(fd, 0, SEEK_SET) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
exit(-1);
}
if ((bytes_read = read(fd, buf, BUF_SIZE)) == -1) {
endwin();
fprintf(stderr, "\nError reading file in dialog_textbox().\n");
exit(-1);
}
buf[bytes_read] = '\0';
}
page = buf;
print_page(text, height-4, width-2);
print_position(dialog, height, width);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
break;
case 'G': /* Last page */
#ifdef HAVE_NCURSES
case KEY_END:
#endif
end_reached = 1;
/* Last page not in buffer? */
if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
exit(-1);
}
if (fpos < file_size) { /* Yes, we have to read it in */
if (lseek(fd, -BUF_SIZE, SEEK_END) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
exit(-1);
}
if ((bytes_read = read(fd, buf, BUF_SIZE)) == -1) {
endwin();
fprintf(stderr, "\nError reading file in dialog_textbox().\n");
exit(-1);
}
buf[bytes_read] = '\0';
}
page = buf + bytes_read;
back_lines(height-4);
print_page(text, height-4, width-2);
print_position(dialog, height, width);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
break;
case 'K': /* Previous line */
case 'k':
case KEY_UP:
if (!begin_reached) {
back_lines(page_length+1);
#ifdef HAVE_NCURSES
/* We don't call print_page() here but use scrolling to ensure
faster screen update. However, 'end_reached' and 'page_length'
should still be updated, and 'page' should point to start of
next page. This is done by calling get_line() in the following
'for' loop. */
scrollok(text, TRUE);
wscrl(text, -1); /* Scroll text region down one line */
scrollok(text, FALSE);
page_length = 0;
passed_end = 0;
for (i = 0; i < height-4; i++) {
if (!i) {
print_line(text, 0, width-2); /* print first line of page */
wnoutrefresh(text);
}
else
get_line(); /* Called to update 'end_reached' and 'page' */
if (!passed_end)
page_length++;
if (end_reached && !passed_end)
passed_end = 1;
}
#else
print_page(text, height-4, width-2);
#endif
print_position(dialog, height, width);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
break;
case 'B': /* Previous page */
case 'b':
case KEY_PPAGE:
if (!begin_reached) {
back_lines(page_length + height-4);
print_page(text, height-4, width-2);
print_position(dialog, height, width);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
break;
case 'J': /* Next line */
case 'j':
case KEY_DOWN:
if (!end_reached) {
begin_reached = 0;
scrollok(text, TRUE);
scroll(text); /* Scroll text region up one line */
scrollok(text, FALSE);
print_line(text, height-5, width-2);
#ifndef HAVE_NCURSES
wmove(text, height-5, 0);
waddch(text, ' ');
wmove(text, height-5, width-3);
waddch(text, ' ');
#endif
wnoutrefresh(text);
print_position(dialog, height, width);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
break;
case ' ': /* Next page */
case KEY_NPAGE:
if (!end_reached) {
begin_reached = 0;
print_page(text, height-4, width-2);
print_position(dialog, height, width);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
break;
case '0': /* Beginning of line */
case 'H': /* Scroll left */
case 'h':
case KEY_LEFT:
if (hscroll > 0) {
if (key == '0')
hscroll = 0;
else
hscroll--;
/* Reprint current page to scroll horizontally */
back_lines(page_length);
print_page(text, height-4, width-2);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
break;
case 'L': /* Scroll right */
case 'l':
case KEY_RIGHT:
if (hscroll < MAX_LEN) {
hscroll++;
/* Reprint current page to scroll horizontally */
back_lines(page_length);
print_page(text, height-4, width-2);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
break;
case '/': /* Forward search */
case 'n': /* Repeat forward search */
case '?': /* Backward search */
case 'N': /* Repeat backward search */
/* set search direction */
dir = (key == '/' || key == 'n') ? 1 : 0;
if (dir ? !end_reached : !begin_reached) {
if (key == 'n' || key == 'N') {
if (search_term[0] == '\0') { /* No search term yet */
fprintf(stderr, "\a"); /* beep */
break;
}
}
else /* Get search term from user */
if (get_search_term(text, search_term, height-4, width-2) == -1) {
/* ESC pressed in get_search_term(). Reprint page to clear box */
wattrset(text, dialog_attr);
back_lines(page_length);
print_page(text, height-4, width-2);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
break;
}
/* Save variables for restoring in case search term can't be found */
tempptr = page;
temp = begin_reached;
temp1 = end_reached;
if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
exit(-1);
}
fpos -= bytes_read;
/* update 'page' to point to next (previous) line before
forward (backward) searching */
back_lines(dir ? page_length-1 : page_length+1);
found = NULL;
if (dir) /* Forward search */
while((found = strstr(get_line(), search_term)) == NULL) {
if (end_reached)
break;
}
else /* Backward search */
while((found = strstr(get_line(), search_term)) == NULL) {
if (begin_reached)
break;
back_lines(2);
}
if (found == NULL) { /* not found */
fprintf(stderr, "\a"); /* beep */
/* Restore program state to that before searching */
if (lseek(fd, fpos, SEEK_SET) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
exit(-1);
}
if ((bytes_read = read(fd, buf, BUF_SIZE)) == -1) {
endwin();
fprintf(stderr, "\nError reading file in dialog_textbox().\n");
exit(-1);
}
buf[bytes_read] = '\0';
page = tempptr;
begin_reached = temp;
end_reached = temp1;
/* move 'page' to point to start of current page in order to
re-print current page. Note that 'page' always points to
start of next page, so this is necessary */
back_lines(page_length);
}
else /* Search term found */
back_lines(1);
/* Reprint page */
wattrset(text, dialog_attr);
print_page(text, height-4, width-2);
if (found != NULL)
print_position(dialog, height, width);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
else /* no need to find */
fprintf(stderr, "\a"); /* beep */
break;
case ESC:
break;
}
}
delwin(dialog);
free(buf);
close(fd);
return -1; /* ESC pressed */
}
/* End of dialog_textbox() */
/*
* Go back 'n' lines in text file. Called by dialog_textbox().
* 'page' will be updated to point to the desired line in 'buf'.
*/
static void back_lines(int n)
{
int i, fpos;
begin_reached = 0;
/* We have to distinguish between end_reached and !end_reached since at end
of file, the line is not ended by a '\n'. The code inside 'if' basically
does a '--page' to move one character backward so as to skip '\n' of the
previous line */
if (!end_reached) {
/* Either beginning of buffer or beginning of file reached? */
if (page == buf) {
if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in back_lines().\n");
exit(-1);
}
if (fpos > bytes_read) { /* Not beginning of file yet */
/* We've reached beginning of buffer, but not beginning of file yet,
so read previous part of file into buffer. Note that we only
move backward for BUF_SIZE/2 bytes, but not BUF_SIZE bytes to
avoid re-reading again in print_page() later */
/* Really possible to move backward BUF_SIZE/2 bytes? */
if (fpos < BUF_SIZE/2 + bytes_read) {
/* No, move less then */
if (lseek(fd, 0, SEEK_SET) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in back_lines().\n");
exit(-1);
}
page = buf + fpos - bytes_read;
}
else { /* Move backward BUF_SIZE/2 bytes */
if (lseek(fd, -(BUF_SIZE/2 + bytes_read), SEEK_CUR) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in back_lines().\n");
exit(-1);
}
page = buf + BUF_SIZE/2;
}
if ((bytes_read = read(fd, buf, BUF_SIZE)) == -1) {
endwin();
fprintf(stderr, "\nError reading file in back_lines().\n");
exit(-1);
}
buf[bytes_read] = '\0';
}
else { /* Beginning of file reached */
begin_reached = 1;
return;
}
}
if (*(--page) != '\n') { /* '--page' here */
/* Something's wrong... */
endwin();
fprintf(stderr, "\nInternal error in back_lines().\n");
exit(-1);
}
}
/* Go back 'n' lines */
for (i = 0; i < n; i++)
do {
if (page == buf) {
if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in back_lines().\n");
exit(-1);
}
if (fpos > bytes_read) {
/* Really possible to move backward BUF_SIZE/2 bytes? */
if (fpos < BUF_SIZE/2 + bytes_read) {
/* No, move less then */
if (lseek(fd, 0, SEEK_SET) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in back_lines().\n");
exit(-1);
}
page = buf + fpos - bytes_read;
}
else { /* Move backward BUF_SIZE/2 bytes */
if (lseek(fd, -(BUF_SIZE/2 + bytes_read), SEEK_CUR) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in back_lines().\n");
exit(-1);
}
page = buf + BUF_SIZE/2;
}
if ((bytes_read = read(fd, buf, BUF_SIZE)) == -1) {
endwin();
fprintf(stderr, "\nError reading file in back_lines().\n");
exit(-1);
}
buf[bytes_read] = '\0';
}
else { /* Beginning of file reached */
begin_reached = 1;
return;
}
}
} while (*(--page) != '\n');
page++;
}
/* End of back_lines() */
/*
* Print a new page of text. Called by dialog_textbox().
*/
static void print_page(WINDOW *win, int height, int width)
{
int i, passed_end = 0;
page_length = 0;
for (i = 0; i < height; i++) {
print_line(win, i, width);
if (!passed_end)
page_length++;
if (end_reached && !passed_end)
passed_end = 1;
}
wnoutrefresh(win);
}
/* End of print_page() */
/*
* Print a new line of text. Called by dialog_textbox() and print_page().
*/
static void print_line(WINDOW *win, int row, int width)
{
int i, y, x;
unsigned char *line;
line = get_line();
line += MIN(strlen(line),hscroll); /* Scroll horizontally */
wmove(win, row, 0); /* move cursor to correct line */
waddch(win,' ');
#ifdef HAVE_NCURSES
waddnstr(win, line, MIN(strlen(line),width-2));
#else
line[MIN(strlen(line),width-2)] = '\0';
waddstr(win, line);
#endif
getyx(win, y, x);
/* Clear 'residue' of previous line */
for (i = 0; i < width-x; i++)
waddch(win, ' ');
}
/* End of print_line() */
/*
* Return current line of text. Called by dialog_textbox() and print_line().
* 'page' should point to start of current line before calling, and will be
* updated to point to start of next line.
*/
static unsigned char *get_line(void)
{
int i = 0, fpos;
static unsigned char line[MAX_LEN+1];
end_reached = 0;
while (*page != '\n') {
if (*page == '\0') { /* Either end of file or end of buffer reached */
if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in get_line().\n");
exit(-1);
}
if (fpos < file_size) { /* Not end of file yet */
/* We've reached end of buffer, but not end of file yet, so read next
part of file into buffer */
if ((bytes_read = read(fd, buf, BUF_SIZE)) == -1) {
endwin();
fprintf(stderr, "\nError reading file in get_line().\n");
exit(-1);
}
buf[bytes_read] = '\0';
page = buf;
}
else {
if (!end_reached)
end_reached = 1;
break;
}
}
else
if (i < MAX_LEN)
line[i++] = *(page++);
else {
if (i == MAX_LEN) /* Truncate lines longer than MAX_LEN characters */
line[i++] = '\0';
page++;
}
}
if (i <= MAX_LEN)
line[i] = '\0';
if (!end_reached)
page++; /* move pass '\n' */
return line;
}
/* End of get_line() */
/*
* Display a dialog box and get the search term from user
*/
static int get_search_term(WINDOW *win, unsigned char *search_term, int height, int width)
{
int i, x, y, input_x = 0, scroll = 0, key = 0,
box_height = 3, box_width = 30;
x = (width - box_width)/2;
y = (height - box_height)/2;
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(win, y, x, box_height, box_width);
#endif
draw_box(win, y, x, box_height, box_width, dialog_attr, searchbox_border_attr);
wattrset(win, searchbox_title_attr);
wmove(win, y, x+box_width/2-4);
waddstr(win, " Search ");
box_width -= 2;
wmove(win, y+1, x+1);
wrefresh(win);
search_term[0] = '\0';
wattrset(win, searchbox_attr);
while (key != ESC) {
key = wgetch(win);
switch (key) {
case '\n':
if (search_term[0] != '\0')
return 0;
break;
case KEY_BACKSPACE:
if (input_x || scroll) {
if (!input_x) {
scroll = scroll < box_width-1 ? 0 : scroll-(box_width-1);
wmove(win, y+1, x+1);
for (i = 0; i < box_width; i++)
waddch(win, search_term[scroll+input_x+i] ?
search_term[scroll+input_x+i] : ' ');
input_x = strlen(search_term) - scroll;
}
else
input_x--;
search_term[scroll+input_x] = '\0';
wmove(win, y+1, input_x + x+1);
waddch(win, ' ');
wmove(win, y+1, input_x + x+1);
wrefresh(win);
}
break;
case ESC:
break;
default:
if (isprint(key))
if (scroll+input_x < MAX_LEN) {
search_term[scroll+input_x] = key;
search_term[scroll+input_x+1] = '\0';
if (input_x == box_width-1) {
scroll++;
wmove(win, y+1, x+1);
for (i = 0; i < box_width-1; i++)
waddch(win, search_term[scroll+i]);
}
else {
wmove(win, y+1, input_x++ + x+1);
waddch(win, key);
}
wrefresh(win);
}
}
}
return -1; /* ESC pressed */
}
/* End of get_search_term() */
/*
* Print current position
*/
static void print_position(WINDOW *win, int height, int width)
{
int fpos, percent;
if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
endwin();
fprintf(stderr, "\nError moving file pointer in print_position().\n");
exit(-1);
}
wattrset(win, position_indicator_attr);
percent = !file_size ? 100 : ((fpos-bytes_read+page-buf)*100)/file_size;
wmove(win, height-3, width-9);
wprintw(win, "(%3d%%)", percent);
}
/* End of print_position() */

114
gnu/lib/libdialog/yesno.c Normal file
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/*
* yesno.c -- implements the yes/no box
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "dialog.priv.h"
#include <dialog.h>
/*
* Display a dialog box with two buttons - Yes and No
*/
int dialog_yesno(unsigned char *title, unsigned char * prompt, int height, int width)
{
int i, x, y, key = 0, button = 0;
WINDOW *dialog;
/* center dialog box on screen */
x = (COLS - width)/2;
y = (LINES - height)/2;
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(stdscr, y, x, height, width);
#endif
dialog = newwin(height, width, y, x);
keypad(dialog, TRUE);
draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
wattrset(dialog, border_attr);
wmove(dialog, height-3, 0);
waddch(dialog, ACS_LTEE);
for (i = 0; i < width-2; i++)
waddch(dialog, ACS_HLINE);
wattrset(dialog, dialog_attr);
waddch(dialog, ACS_RTEE);
wmove(dialog, height-2, 1);
for (i = 0; i < width-2; i++)
waddch(dialog, ' ');
if (title != NULL) {
wattrset(dialog, title_attr);
wmove(dialog, 0, (width - strlen(title))/2 - 1);
waddch(dialog, ' ');
waddstr(dialog, title);
waddch(dialog, ' ');
}
wattrset(dialog, dialog_attr);
print_autowrap(dialog, prompt, width, 1, 3);
x = width/2-10;
y = height-2;
print_button(dialog, " No ", y, x+13, FALSE);
print_button(dialog, " Yes ", y, x, TRUE);
wrefresh(dialog);
while (key != ESC) {
key = wgetch(dialog);
switch (key) {
case 'Y':
case 'y':
delwin(dialog);
return 0;
case 'N':
case 'n':
delwin(dialog);
return 1;
case KEY_BTAB:
case TAB:
case KEY_UP:
case KEY_DOWN:
case KEY_LEFT:
case KEY_RIGHT:
if (!button) {
button = 1; /* Indicates "No" button is selected */
print_button(dialog, " Yes ", y, x, FALSE);
print_button(dialog, " No ", y, x+13, TRUE);
}
else {
button = 0; /* Indicates "Yes" button is selected */
print_button(dialog, " No ", y, x+13, FALSE);
print_button(dialog, " Yes ", y, x, TRUE);
}
wrefresh(dialog);
break;
case ' ':
case '\n':
delwin(dialog);
return button;
case ESC:
break;
}
}
delwin(dialog);
return -1; /* ESC pressed */
}
/* End of dialog_yesno() */