/* *  util.c * *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk) *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com) * *  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.h"/* use colors by default? */bool use_colors = 1;const char *backtitle = NULL;/* * Attribute values, default is for mono display */chtype attributes[] = {	A_NORMAL,		/* screen_attr */	A_NORMAL,		/* shadow_attr */	A_NORMAL,		/* dialog_attr */	A_BOLD,			/* title_attr */	A_NORMAL,		/* border_attr */	A_REVERSE,		/* button_active_attr */	A_DIM,			/* button_inactive_attr */	A_REVERSE,		/* button_key_active_attr */	A_BOLD,			/* button_key_inactive_attr */	A_REVERSE,		/* button_label_active_attr */	A_NORMAL,		/* button_label_inactive_attr */	A_NORMAL,		/* inputbox_attr */	A_NORMAL,		/* inputbox_border_attr */	A_NORMAL,		/* searchbox_attr */	A_BOLD,			/* searchbox_title_attr */	A_NORMAL,		/* searchbox_border_attr */	A_BOLD,			/* position_indicator_attr */	A_NORMAL,		/* menubox_attr */	A_NORMAL,		/* menubox_border_attr */	A_NORMAL,		/* item_attr */	A_REVERSE,		/* item_selected_attr */	A_BOLD,			/* tag_attr */	A_REVERSE,		/* tag_selected_attr */	A_BOLD,			/* tag_key_attr */	A_REVERSE,		/* tag_key_selected_attr */	A_BOLD,			/* check_attr */	A_REVERSE,		/* check_selected_attr */	A_BOLD,			/* uarrow_attr */	A_BOLD			/* darrow_attr */};#include "colors.h"/* * 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 *//* * Set window to attribute 'attr' */void attr_clear(WINDOW * win, int height, int width, chtype attr){	int i, j;	wattrset(win, attr);	for (i = 0; i < height; i++) {		wmove(win, i, 0);		for (j = 0; j < width; j++)			waddch(win, ' ');	}	touchwin(win);}void dialog_clear(void){	attr_clear(stdscr, LINES, COLS, screen_attr);	/* Display background title if it exists ... - SLH */	if (backtitle != NULL) {		int i;		wattrset(stdscr, screen_attr);		mvwaddstr(stdscr, 0, 1, (char *)backtitle);		wmove(stdscr, 1, 1);		for (i = 1; i < COLS - 1; i++)			waddch(stdscr, ACS_HLINE);	}	wnoutrefresh(stdscr);}/* * Do some initialization for dialog */void init_dialog(void){	initscr();		/* Init curses */	keypad(stdscr, TRUE);	cbreak();	noecho();	if (use_colors)		/* Set up colors */		color_setup();	dialog_clear();}/* * 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 using dialog functions. */void end_dialog(void){	endwin();}/* Print the title of the dialog. Center the title and truncate * tile if wider than dialog (- 2 chars). **/void print_title(WINDOW *dialog, const char *title, int width){	if (title) {		int tlen = MIN(width - 2, strlen(title));		wattrset(dialog, title_attr);		mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');		mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);		waddch(dialog, ' ');	}}/* * 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. Newline * characters '\n' are replaced by spaces.  We start on a new line * if there is no room for at least 4 nonblanks following a double-space. */void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x){	int newl, cur_x, cur_y;	int i, prompt_len, room, wlen;	char tempstr[MAX_LEN + 1], *word, *sp, *sp2;	strcpy(tempstr, prompt);	prompt_len = strlen(tempstr);	/*	 * Remove newlines	 */	for (i = 0; i < prompt_len; i++) {		if (tempstr[i] == '\n')			tempstr[i] = ' ';	}	if (prompt_len <= width - x * 2) {	/* If prompt is short */		wmove(win, y, (width - prompt_len) / 2);		waddstr(win, tempstr);	} else {		cur_x = x;		cur_y = y;		newl = 1;		word = tempstr;		while (word && *word) {			sp = strchr(word, ' ');			if (sp)				*sp++ = 0;			/* Wrap to next line if either the word does not fit,			   or it is the first word of a new sentence, and it is			   short, and the next word does not fit. */			room = width - cur_x;			wlen = strlen(word);			if (wlen > room ||			    (newl && wlen < 4 && sp			     && wlen + 1 + strlen(sp) > room			     && (!(sp2 = strchr(sp, ' '))				 || wlen + 1 + (sp2 - sp) > room))) {				cur_y++;				cur_x = x;			}			wmove(win, cur_y, cur_x);			waddstr(win, word);			getyx(win, cur_y, cur_x);			cur_x++;			if (sp && *sp == ' ') {				cur_x++;	/* double space */				while (*++sp == ' ') ;				newl = 1;			} else				newl = 0;			word = sp;		}	}}/* * Print a button */void print_button(WINDOW * win, const 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, (char *)label + 1);	wattrset(win, selected ? button_active_attr : button_inactive_attr);	waddstr(win, ">");	wmove(win, y, x + temp + 1);}/* * Draw a rectangular box with line drawing characters */voiddraw_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 | ' ');	}}/* * 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);	}}/* *  Return the position of the first alphabetic character in a string. */int first_alpha(const char *string, const char *exempt){	int i, in_paren = 0, c;	for (i = 0; i < strlen(string); i++) {		c = tolower(string[i]);		if (strchr("<[(", c))			++in_paren;		if (strchr(">])", c) && in_paren > 0)			--in_paren;		if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)			return i;	}	return 0;}