/* *  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;const char *dialog_result;/*  * 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' */voidattr_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 */voidinit_dialog (void){    initscr ();			/* Init curses */    keypad (stdscr, TRUE);    cbreak ();    noecho ();    if (use_colors)	/* Set up colors */	color_setup ();    dialog_clear ();}/* * Setup for color display */voidcolor_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. */voidend_dialog (void){    endwin ();}/* * 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. */voidprint_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 = index(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 = index(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 */voidprint_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 */voiddraw_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. */intfirst_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;		if ((! in_paren) && isalpha(c) && 		     strchr(exempt, c) == 0)			return i;	}	return 0;}