[mirror_ubuntu-bionic-kernel.git] / scripts / kconfig / lxdialog / textbox.c

/*
 *  textbox.c -- implements the text box
 *
 *  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"

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 char *get_line(void);
static void print_position(WINDOW * win);

static int hscroll;
static int begin_reached, end_reached, page_length;
static const char *buf;
static const char *page;

/*
 * refresh window content
 */
static void refresh_text_box(WINDOW *dialog, WINDOW *box, int boxh, int boxw,
							  int cur_y, int cur_x)
{
	print_page(box, boxh, boxw);
	print_position(dialog);
	wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
	wrefresh(dialog);
}


/*
 * Display text from a file in a dialog box.
 */
int dialog_textbox(const char *title, const char *tbuf,
		   int initial_height, int initial_width)
{
	int i, x, y, cur_x, cur_y, key = 0;
	int height, width, boxh, boxw;
	int passed_end;
	WINDOW *dialog, *box;

	begin_reached = 1;
	end_reached = 0;
	page_length = 0;
	hscroll = 0;
	buf = tbuf;
	page = buf;	/* page is pointer to start of page to be displayed */

do_resize:
	getmaxyx(stdscr, height, width);
	if (height < 8 || width < 8)
		return -ERRDISPLAYTOOSMALL;
	if (initial_height != 0)
		height = initial_height;
	else
		if (height > 4)
			height -= 4;
		else
			height = 0;
	if (initial_width != 0)
		width = initial_width;
	else
		if (width > 5)
			width -= 5;
		else
			width = 0;

	/* center dialog box on screen */
	x = (COLS - width) / 2;
	y = (LINES - height) / 2;

	draw_shadow(stdscr, y, x, height, width);

	dialog = newwin(height, width, y, x);
	keypad(dialog, TRUE);

	/* Create window for box region, used for scrolling text */
	boxh = height - 4;
	boxw = width - 2;
	box = subwin(dialog, boxh, boxw, y + 1, x + 1);
	wattrset(box, dlg.dialog.atr);
	wbkgdset(box, dlg.dialog.atr & A_COLOR);

	keypad(box, TRUE);

	/* register the new window, along with its borders */
	draw_box(dialog, 0, 0, height, width,
		 dlg.dialog.atr, dlg.border.atr);

	wattrset(dialog, dlg.border.atr);
	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
	for (i = 0; i < width - 2; i++)
		waddch(dialog, ACS_HLINE);
	wattrset(dialog, dlg.dialog.atr);
	wbkgdset(dialog, dlg.dialog.atr & A_COLOR);
	waddch(dialog, ACS_RTEE);

	print_title(dialog, title, width);

	print_button(dialog, gettext(" 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(box, boxh, boxw, dlg.dialog.atr);
	refresh_text_box(dialog, box, boxh, boxw, cur_y, cur_x);

	while ((key != KEY_ESC) && (key != '\n')) {
		key = wgetch(dialog);
		switch (key) {
		case 'E':	/* Exit */
		case 'e':
		case 'X':
		case 'x':
			delwin(box);
			delwin(dialog);
			return 0;
		case 'g':	/* First page */
		case KEY_HOME:
			if (!begin_reached) {
				begin_reached = 1;
				page = buf;
				refresh_text_box(dialog, box, boxh, boxw,
						 cur_y, cur_x);
			}
			break;
		case 'G':	/* Last page */
		case KEY_END:

			end_reached = 1;
			/* point to last char in buf */
			page = buf + strlen(buf);
			back_lines(boxh);
			refresh_text_box(dialog, box, boxh, boxw,
					 cur_y, cur_x);
			break;
		case 'K':	/* Previous line */
		case 'k':
		case KEY_UP:
			if (!begin_reached) {
				back_lines(page_length + 1);

				/* 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(box, TRUE);
				wscrl(box, -1);	/* Scroll box region down one line */
				scrollok(box, FALSE);
				page_length = 0;
				passed_end = 0;
				for (i = 0; i < boxh; i++) {
					if (!i) {
						/* print first line of page */
						print_line(box, 0, boxw);
						wnoutrefresh(box);
					} else
						/* Called to update 'end_reached' and 'page' */
						get_line();
					if (!passed_end)
						page_length++;
					if (end_reached && !passed_end)
						passed_end = 1;
				}

				print_position(dialog);
				wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
				wrefresh(dialog);
			}
			break;
		case 'B':	/* Previous page */
		case 'b':
		case KEY_PPAGE:
			if (begin_reached)
				break;
			back_lines(page_length + boxh);
			refresh_text_box(dialog, box, boxh, boxw,
					 cur_y, cur_x);
			break;
		case 'J':	/* Next line */
		case 'j':
		case KEY_DOWN:
			if (!end_reached) {
				begin_reached = 0;
				scrollok(box, TRUE);
				scroll(box);	/* Scroll box region up one line */
				scrollok(box, FALSE);
				print_line(box, boxh - 1, boxw);
				wnoutrefresh(box);
				print_position(dialog);
				wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
				wrefresh(dialog);
			}
			break;
		case KEY_NPAGE:	/* Next page */
		case ' ':
			if (end_reached)
				break;

			begin_reached = 0;
			refresh_text_box(dialog, box, boxh, boxw,
					 cur_y, cur_x);
			break;
		case '0':	/* Beginning of line */
		case 'H':	/* Scroll left */
		case 'h':
		case KEY_LEFT:
			if (hscroll <= 0)
				break;

			if (key == '0')
				hscroll = 0;
			else
				hscroll--;
			/* Reprint current page to scroll horizontally */
			back_lines(page_length);
			refresh_text_box(dialog, box, boxh, boxw,
					 cur_y, cur_x);
			break;
		case 'L':	/* Scroll right */
		case 'l':
		case KEY_RIGHT:
			if (hscroll >= MAX_LEN)
				break;
			hscroll++;
			/* Reprint current page to scroll horizontally */
			back_lines(page_length);
			refresh_text_box(dialog, box, boxh, boxw,
					 cur_y, cur_x);
			break;
		case KEY_ESC:
			key = on_key_esc(dialog);
			break;
		case KEY_RESIZE:
			back_lines(height);
			delwin(box);
			delwin(dialog);
			on_key_resize();
			goto do_resize;
		}
	}
	delwin(box);
	delwin(dialog);
	return key;		/* ESC pressed */
}

/*
 * Go back 'n' lines in text. Called by dialog_textbox().
 * 'page' will be updated to point to the desired line in 'buf'.
 */
static void back_lines(int n)
{
	int i;

	begin_reached = 0;
	/* Go back 'n' lines */
	for (i = 0; i < n; i++) {
		if (*page == '\0') {
			if (end_reached) {
				end_reached = 0;
				continue;
			}
		}
		if (page == buf) {
			begin_reached = 1;
			return;
		}
		page--;
		do {
			if (page == buf) {
				begin_reached = 1;
				return;
			}
			page--;
		} while (*page != '\n');
		page++;
	}
}

/*
 * 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);
}

/*
 * Print a new line of text. Called by dialog_textbox() and print_page().
 */
static void print_line(WINDOW * win, int row, int width)
{
	int y, x;
	char *line;

	line = get_line();
	line += MIN(strlen(line), hscroll);	/* Scroll horizontally */
	wmove(win, row, 0);	/* move cursor to correct line */
	waddch(win, ' ');
	waddnstr(win, line, MIN(strlen(line), width - 2));

	getyx(win, y, x);
	/* Clear 'residue' of previous line */
#if OLD_NCURSES
	{
		int i;
		for (i = 0; i < width - x; i++)
			waddch(win, ' ');
	}
#else
	wclrtoeol(win);
#endif
}

/*
 * 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 char *get_line(void)
{
	int i = 0;
	static char line[MAX_LEN + 1];

	end_reached = 0;
	while (*page != '\n') {
		if (*page == '\0') {
			if (!end_reached) {
				end_reached = 1;
				break;
			}
		} else if (i < MAX_LEN)
			line[i++] = *(page++);
		else {
			/* Truncate lines longer than MAX_LEN characters */
			if (i == MAX_LEN)
				line[i++] = '\0';
			page++;
		}
	}
	if (i <= MAX_LEN)
		line[i] = '\0';
	if (!end_reached)
		page++;		/* move pass '\n' */

	return line;
}

/*
 * Print current position
 */
static void print_position(WINDOW * win)
{
	int percent;

	wattrset(win, dlg.position_indicator.atr);
	wbkgdset(win, dlg.position_indicator.atr & A_COLOR);
	percent = (page - buf) * 100 / strlen(buf);
	wmove(win, getmaxy(win) - 3, getmaxx(win) - 9);
	wprintw(win, "(%3d%%)", percent);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* textbox.c -- implements the text box
	3	*
	4	* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
	5	* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License
	9	* as published by the Free Software Foundation; either version 2
	10	* of the License, or (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	20	*/
	21
	22	#include "dialog.h"
	23
b1c5f1c6 SR	24	static void back_lines(int n);
	25	static void print_page(WINDOW * win, int height, int width);
	26	static void print_line(WINDOW * win, int row, int width);
	27	static char *get_line(void);
c8dc68ad	28	static void print_position(WINDOW * win);
1da177e4	29
2982de69 SR	30	static int hscroll;
	31	static int begin_reached, end_reached, page_length;
	32	static const char *buf;
	33	static const char *page;
1da177e4	34
c8dc68ad SR	35	/*
	36	* refresh window content
	37	*/
	38	static void refresh_text_box(WINDOW dialog, WINDOW box, int boxh, int boxw,
	39	int cur_y, int cur_x)
	40	{
	41	print_page(box, boxh, boxw);
	42	print_position(dialog);
	43	wmove(dialog, cur_y, cur_x); /* Restore cursor position */
	44	wrefresh(dialog);
	45	}
	46
	47
1da177e4 LT	48	/*
	49	* Display text from a file in a dialog box.
	50	*/
c8dc68ad SR	51	int dialog_textbox(const char title, const char tbuf,
c8dc68ad SR	52	int initial_height, int initial_width)
1da177e4	53	{
2982de69	54	int i, x, y, cur_x, cur_y, key = 0;
c8dc68ad	55	int height, width, boxh, boxw;
b1c5f1c6	56	int passed_end;
c8dc68ad	57	WINDOW dialog, box;
b1c5f1c6	58
2982de69 SR	59	begin_reached = 1;
	60	end_reached = 0;
	61	page_length = 0;
	62	hscroll = 0;
	63	buf = tbuf;
	64	page = buf; /* page is pointer to start of page to be displayed */
b1c5f1c6	65
c8dc68ad SR	66	do_resize:
	67	getmaxyx(stdscr, height, width);
	68	if (height < 8 \|\| width < 8)
	69	return -ERRDISPLAYTOOSMALL;
	70	if (initial_height != 0)
	71	height = initial_height;
	72	else
	73	if (height > 4)
	74	height -= 4;
	75	else
	76	height = 0;
	77	if (initial_width != 0)
	78	width = initial_width;
	79	else
	80	if (width > 5)
	81	width -= 5;
	82	else
	83	width = 0;
	84
b1c5f1c6 SR	85	/* center dialog box on screen */
	86	x = (COLS - width) / 2;
	87	y = (LINES - height) / 2;
	88
	89	draw_shadow(stdscr, y, x, height, width);
	90
	91	dialog = newwin(height, width, y, x);
	92	keypad(dialog, TRUE);
	93
c8dc68ad SR	94	/* Create window for box region, used for scrolling text */
	95	boxh = height - 4;
	96	boxw = width - 2;
	97	box = subwin(dialog, boxh, boxw, y + 1, x + 1);
	98	wattrset(box, dlg.dialog.atr);
	99	wbkgdset(box, dlg.dialog.atr & A_COLOR);
b1c5f1c6	100
c8dc68ad	101	keypad(box, TRUE);
b1c5f1c6 SR	102
b1c5f1c6 SR	103	/* register the new window, along with its borders */
98e5a157 SR	104	draw_box(dialog, 0, 0, height, width,
98e5a157 SR	105	dlg.dialog.atr, dlg.border.atr);
b1c5f1c6	106
98e5a157	107	wattrset(dialog, dlg.border.atr);
b1c5f1c6 SR	108	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
	109	for (i = 0; i < width - 2; i++)
	110	waddch(dialog, ACS_HLINE);
98e5a157 SR	111	wattrset(dialog, dlg.dialog.atr);
98e5a157 SR	112	wbkgdset(dialog, dlg.dialog.atr & A_COLOR);
b1c5f1c6 SR	113	waddch(dialog, ACS_RTEE);
b1c5f1c6 SR	114
fa7009d5	115	print_title(dialog, title, width);
1da177e4	116
75c0a8a5	117	print_button(dialog, gettext(" Exit "), height - 2, width / 2 - 4, TRUE);
b1c5f1c6 SR	118	wnoutrefresh(dialog);
	119	getyx(dialog, cur_y, cur_x); /* Save cursor position */
	120
	121	/* Print first page of text */
c8dc68ad SR	122	attr_clear(box, boxh, boxw, dlg.dialog.atr);
c8dc68ad SR	123	refresh_text_box(dialog, box, boxh, boxw, cur_y, cur_x);
b1c5f1c6	124
f3cbcdc9	125	while ((key != KEY_ESC) && (key != '\n')) {
b1c5f1c6 SR	126	key = wgetch(dialog);
	127	switch (key) {
	128	case 'E': /* Exit */
	129	case 'e':
	130	case 'X':
	131	case 'x':
c8dc68ad	132	delwin(box);
b1c5f1c6	133	delwin(dialog);
b1c5f1c6 SR	134	return 0;
	135	case 'g': /* First page */
	136	case KEY_HOME:
	137	if (!begin_reached) {
	138	begin_reached = 1;
b1c5f1c6	139	page = buf;
c8dc68ad SR	140	refresh_text_box(dialog, box, boxh, boxw,
c8dc68ad SR	141	cur_y, cur_x);
b1c5f1c6 SR	142	}
	143	break;
	144	case 'G': /* Last page */
	145	case KEY_END:
	146
	147	end_reached = 1;
2982de69 SR	148	/* point to last char in buf */
2982de69 SR	149	page = buf + strlen(buf);
c8dc68ad SR	150	back_lines(boxh);
	151	refresh_text_box(dialog, box, boxh, boxw,
	152	cur_y, cur_x);
b1c5f1c6 SR	153	break;
	154	case 'K': /* Previous line */
	155	case 'k':
	156	case KEY_UP:
	157	if (!begin_reached) {
	158	back_lines(page_length + 1);
	159
2982de69 SR	160	/* We don't call print_page() here but use
	161	* scrolling to ensure faster screen update.
	162	* However, 'end_reached' and 'page_length'
	163	* should still be updated, and 'page' should
	164	* point to start of next page. This is done
	165	* by calling get_line() in the following
	166	* 'for' loop. */
c8dc68ad SR	167	scrollok(box, TRUE);
	168	wscrl(box, -1); /* Scroll box region down one line */
	169	scrollok(box, FALSE);
b1c5f1c6 SR	170	page_length = 0;
b1c5f1c6 SR	171	passed_end = 0;
c8dc68ad	172	for (i = 0; i < boxh; i++) {
b1c5f1c6 SR	173	if (!i) {
b1c5f1c6 SR	174	/* print first line of page */
c8dc68ad SR	175	print_line(box, 0, boxw);
c8dc68ad SR	176	wnoutrefresh(box);
b1c5f1c6 SR	177	} else
	178	/* Called to update 'end_reached' and 'page' */
	179	get_line();
	180	if (!passed_end)
	181	page_length++;
	182	if (end_reached && !passed_end)
	183	passed_end = 1;
	184	}
	185
c8dc68ad	186	print_position(dialog);
b1c5f1c6 SR	187	wmove(dialog, cur_y, cur_x); /* Restore cursor position */
	188	wrefresh(dialog);
	189	}
	190	break;
	191	case 'B': /* Previous page */
	192	case 'b':
	193	case KEY_PPAGE:
	194	if (begin_reached)
	195	break;
c8dc68ad SR	196	back_lines(page_length + boxh);
	197	refresh_text_box(dialog, box, boxh, boxw,
	198	cur_y, cur_x);
b1c5f1c6 SR	199	break;
	200	case 'J': /* Next line */
	201	case 'j':
	202	case KEY_DOWN:
	203	if (!end_reached) {
	204	begin_reached = 0;
c8dc68ad SR	205	scrollok(box, TRUE);
	206	scroll(box); /* Scroll box region up one line */
	207	scrollok(box, FALSE);
	208	print_line(box, boxh - 1, boxw);
	209	wnoutrefresh(box);
	210	print_position(dialog);
b1c5f1c6 SR	211	wmove(dialog, cur_y, cur_x); /* Restore cursor position */
	212	wrefresh(dialog);
	213	}
	214	break;
	215	case KEY_NPAGE: /* Next page */
	216	case ' ':
	217	if (end_reached)
	218	break;
	219
	220	begin_reached = 0;
c8dc68ad SR	221	refresh_text_box(dialog, box, boxh, boxw,
c8dc68ad SR	222	cur_y, cur_x);
b1c5f1c6 SR	223	break;
	224	case '0': /* Beginning of line */
	225	case 'H': /* Scroll left */
	226	case 'h':
	227	case KEY_LEFT:
	228	if (hscroll <= 0)
	229	break;
	230
	231	if (key == '0')
	232	hscroll = 0;
	233	else
	234	hscroll--;
	235	/* Reprint current page to scroll horizontally */
	236	back_lines(page_length);
c8dc68ad SR	237	refresh_text_box(dialog, box, boxh, boxw,
c8dc68ad SR	238	cur_y, cur_x);
b1c5f1c6 SR	239	break;
	240	case 'L': /* Scroll right */
	241	case 'l':
	242	case KEY_RIGHT:
	243	if (hscroll >= MAX_LEN)
	244	break;
	245	hscroll++;
	246	/* Reprint current page to scroll horizontally */
	247	back_lines(page_length);
c8dc68ad SR	248	refresh_text_box(dialog, box, boxh, boxw,
c8dc68ad SR	249	cur_y, cur_x);
b1c5f1c6	250	break;
f3cbcdc9 SR	251	case KEY_ESC:
f3cbcdc9 SR	252	key = on_key_esc(dialog);
b1c5f1c6	253	break;
c8dc68ad SR	254	case KEY_RESIZE:
	255	back_lines(height);
	256	delwin(box);
	257	delwin(dialog);
	258	on_key_resize();
	259	goto do_resize;
b1c5f1c6	260	}
1da177e4	261	}
c8dc68ad	262	delwin(box);
b1c5f1c6	263	delwin(dialog);
f3cbcdc9	264	return key; /* ESC pressed */
1da177e4 LT	265	}
	266
	267	/*
2982de69	268	* Go back 'n' lines in text. Called by dialog_textbox().
1da177e4 LT	269	* 'page' will be updated to point to the desired line in 'buf'.
1da177e4 LT	270	*/
b1c5f1c6	271	static void back_lines(int n)
1da177e4	272	{
2982de69	273	int i;
b1c5f1c6 SR	274
b1c5f1c6 SR	275	begin_reached = 0;
2982de69 SR	276	/* Go back 'n' lines */
	277	for (i = 0; i < n; i++) {
	278	if (*page == '\0') {
	279	if (end_reached) {
	280	end_reached = 0;
	281	continue;
b1c5f1c6	282	}
1da177e4	283	}
2982de69 SR	284	if (page == buf) {
	285	begin_reached = 1;
	286	return;
1da177e4	287	}
2982de69	288	page--;
b1c5f1c6 SR	289	do {
b1c5f1c6 SR	290	if (page == buf) {
2982de69 SR	291	begin_reached = 1;
2982de69 SR	292	return;
1da177e4	293	}
2982de69 SR	294	page--;
	295	} while (*page != '\n');
	296	page++;
	297	}
1da177e4 LT	298	}
	299
	300	/*
	301	* Print a new page of text. Called by dialog_textbox().
	302	*/
b1c5f1c6	303	static void print_page(WINDOW * win, int height, int width)
1da177e4	304	{
b1c5f1c6 SR	305	int i, passed_end = 0;
	306
	307	page_length = 0;
	308	for (i = 0; i < height; i++) {
	309	print_line(win, i, width);
	310	if (!passed_end)
	311	page_length++;
	312	if (end_reached && !passed_end)
	313	passed_end = 1;
	314	}
	315	wnoutrefresh(win);
1da177e4 LT	316	}
	317
	318	/*
	319	* Print a new line of text. Called by dialog_textbox() and print_page().
	320	*/
b1c5f1c6	321	static void print_line(WINDOW * win, int row, int width)
1da177e4	322	{
b1c5f1c6 SR	323	int y, x;
b1c5f1c6 SR	324	char *line;
1da177e4	325
b1c5f1c6 SR	326	line = get_line();
	327	line += MIN(strlen(line), hscroll); /* Scroll horizontally */
	328	wmove(win, row, 0); /* move cursor to correct line */
	329	waddch(win, ' ');
	330	waddnstr(win, line, MIN(strlen(line), width - 2));
1da177e4	331
b1c5f1c6 SR	332	getyx(win, y, x);
b1c5f1c6 SR	333	/* Clear 'residue' of previous line */
1da177e4	334	#if OLD_NCURSES
b1c5f1c6 SR	335	{
	336	int i;
	337	for (i = 0; i < width - x; i++)
	338	waddch(win, ' ');
	339	}
1da177e4	340	#else
b1c5f1c6	341	wclrtoeol(win);
1da177e4 LT	342	#endif
	343	}
	344
	345	/*
	346	* Return current line of text. Called by dialog_textbox() and print_line().
	347	* 'page' should point to start of current line before calling, and will be
	348	* updated to point to start of next line.
	349	*/
b1c5f1c6	350	static char *get_line(void)
1da177e4	351	{
2982de69	352	int i = 0;
b1c5f1c6 SR	353	static char line[MAX_LEN + 1];
	354
	355	end_reached = 0;
	356	while (*page != '\n') {
	357	if (*page == '\0') {
2982de69 SR	358	if (!end_reached) {
2982de69 SR	359	end_reached = 1;
b1c5f1c6 SR	360	break;
	361	}
	362	} else if (i < MAX_LEN)
	363	line[i++] = *(page++);
	364	else {
	365	/* Truncate lines longer than MAX_LEN characters */
	366	if (i == MAX_LEN)
	367	line[i++] = '\0';
	368	page++;
1da177e4	369	}
1da177e4	370	}
b1c5f1c6 SR	371	if (i <= MAX_LEN)
	372	line[i] = '\0';
	373	if (!end_reached)
	374	page++; /* move pass '\n' */
1da177e4	375
b1c5f1c6	376	return line;
1da177e4 LT	377	}
	378
	379	/*
	380	* Print current position
	381	*/
c8dc68ad	382	static void print_position(WINDOW * win)
1da177e4	383	{
2982de69	384	int percent;
b1c5f1c6	385
98e5a157 SR	386	wattrset(win, dlg.position_indicator.atr);
98e5a157 SR	387	wbkgdset(win, dlg.position_indicator.atr & A_COLOR);
2982de69	388	percent = (page - buf) * 100 / strlen(buf);
c8dc68ad	389	wmove(win, getmaxy(win) - 3, getmaxx(win) - 9);
b1c5f1c6	390	wprintw(win, "(%3d%%)", percent);
1da177e4	391	}