FM / lxdialog

/usr/src/linux-headers-5.15.0-190-generic/scripts/kconfig/lxdialog/

/usr/src/linux-headers-5.15.0-190-generic/scripts/kconfig/lxdialog

Name	Size	Mode	Actions
BIG.FAT.WARNING	233	0644	edit dl rm
checklist.c	7746	0644	edit dl rm
dialog.h	6854	0644	edit dl rm
inputbox.c	6595	0644	edit dl rm
menubox.c	10523	0644	edit dl rm
textbox.c	8523	0644	edit dl rm
util.c	17647	0644	edit dl rm
yesno.c	2262	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-190/scripts/kconfig/lxdialog/inputbox.c (6595B)

// SPDX-License-Identifier: GPL-2.0+
/*
 *  inputbox.c -- implements the input box
 *
 *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
 *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
 */

#include "dialog.h"

char dialog_input_result[MAX_LEN + 1];

/*
 *  Print the termination buttons
 */
static void print_buttons(WINDOW * dialog, int height, int width, int selected)
{
	int x = width / 2 - 11;
	int y = height - 2;

print_button(dialog, "  Ok  ", y, x, selected == 0);
	print_button(dialog, " Help ", y, x + 14, selected == 1);

wmove(dialog, y, x + 1 + 14 * selected);
	wrefresh(dialog);
}

/*
 * Display a dialog box for inputing a string
 */
int dialog_inputbox(const char *title, const char *prompt, int height, int width,
		    const char *init)
{
	int i, x, y, box_y, box_x, box_width;
	int input_x = 0, key = 0, button = -1;
	int show_x, len, pos;
	char *instr = dialog_input_result;
	WINDOW *dialog;

if (!init)
		instr[0] = '\0';
	else {
		strncpy(instr, init, sizeof(dialog_input_result) - 1);
		instr[sizeof(dialog_input_result) - 1] = '\0';
	}

do_resize:
	if (getmaxy(stdscr) <= (height - INPUTBOX_HEIGTH_MIN))
		return -ERRDISPLAYTOOSMALL;
	if (getmaxx(stdscr) <= (width - INPUTBOX_WIDTH_MIN))
		return -ERRDISPLAYTOOSMALL;

/* center dialog box on screen */
	x = (getmaxx(stdscr) - width) / 2;
	y = (getmaxy(stdscr) - height) / 2;

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

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

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);
	waddch(dialog, ACS_RTEE);

print_title(dialog, title, width);

wattrset(dialog, dlg.dialog.atr);
	print_autowrap(dialog, prompt, width - 2, 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,
		 dlg.dialog.atr, dlg.border.atr);

print_buttons(dialog, height, width, 0);

/* Set up the initial value */
	wmove(dialog, box_y, box_x);
	wattrset(dialog, dlg.inputbox.atr);

len = strlen(instr);
	pos = len;

if (len >= box_width) {
		show_x = len - box_width + 1;
		input_x = box_width - 1;
		for (i = 0; i < box_width - 1; i++)
			waddch(dialog, instr[show_x + i]);
	} else {
		show_x = 0;
		input_x = len;
		waddstr(dialog, instr);
	}

wmove(dialog, box_y, box_x + input_x);

wrefresh(dialog);

while (key != KEY_ESC) {
		key = wgetch(dialog);

if (button == -1) {	/* Input box selected */
			switch (key) {
			case TAB:
			case KEY_UP:
			case KEY_DOWN:
				break;
			case KEY_BACKSPACE:
			case 8:   /* ^H */
			case 127: /* ^? */
				if (pos) {
					wattrset(dialog, dlg.inputbox.atr);
					if (input_x == 0) {
						show_x--;
					} else
						input_x--;

if (pos < len) {
						for (i = pos - 1; i < len; i++) {
							instr[i] = instr[i+1];
						}
					}

pos--;
					len--;
					instr[len] = '\0';
					wmove(dialog, box_y, box_x);
					for (i = 0; i < box_width; i++) {
						if (!instr[show_x + i]) {
							waddch(dialog, ' ');
							break;
						}
						waddch(dialog, instr[show_x + i]);
					}
					wmove(dialog, box_y, input_x + box_x);
					wrefresh(dialog);
				}
				continue;
			case KEY_LEFT:
				if (pos > 0) {
					if (input_x > 0) {
						wmove(dialog, box_y, --input_x + box_x);
					} else if (input_x == 0) {
						show_x--;
						wmove(dialog, box_y, box_x);
						for (i = 0; i < box_width; i++) {
							if (!instr[show_x + i]) {
								waddch(dialog, ' ');
								break;
							}
							waddch(dialog, instr[show_x + i]);
						}
						wmove(dialog, box_y, box_x);
					}
					pos--;
				}
				continue;
			case KEY_RIGHT:
				if (pos < len) {
					if (input_x < box_width - 1) {
						wmove(dialog, box_y, ++input_x + box_x);
					} else if (input_x == box_width - 1) {
						show_x++;
						wmove(dialog, box_y, box_x);
						for (i = 0; i < box_width; i++) {
							if (!instr[show_x + i]) {
								waddch(dialog, ' ');
								break;
							}
							waddch(dialog, instr[show_x + i]);
						}
						wmove(dialog, box_y, input_x + box_x);
					}
					pos++;
				}
				continue;
			default:
				if (key < 0x100 && isprint(key)) {
					if (len < MAX_LEN) {
						wattrset(dialog, dlg.inputbox.atr);
						if (pos < len) {
							for (i = len; i > pos; i--)
								instr[i] = instr[i-1];
							instr[pos] = key;
						} else {
							instr[len] = key;
						}
						pos++;
						len++;
						instr[len] = '\0';

if (input_x == box_width - 1) {
							show_x++;
						} else {
							input_x++;
						}

wmove(dialog, box_y, box_x);
						for (i = 0; i < box_width; i++) {
							if (!instr[show_x + i]) {
								waddch(dialog, ' ');
								break;
							}
							waddch(dialog, instr[show_x + 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);
			return 0;
		case 'H':
		case 'h':
			delwin(dialog);
			return 1;
		case KEY_UP:
		case KEY_LEFT:
			switch (button) {
			case -1:
				button = 1;	/* Indicates "Help" button is selected */
				print_buttons(dialog, height, width, 1);
				break;
			case 0:
				button = -1;	/* Indicates input box is selected */
				print_buttons(dialog, height, width, 0);
				wmove(dialog, box_y, box_x + input_x);
				wrefresh(dialog);
				break;
			case 1:
				button = 0;	/* Indicates "OK" button is selected */
				print_buttons(dialog, height, width, 0);
				break;
			}
			break;
		case TAB:
		case KEY_DOWN:
		case KEY_RIGHT:
			switch (button) {
			case -1:
				button = 0;	/* Indicates "OK" button is selected */
				print_buttons(dialog, height, width, 0);
				break;
			case 0:
				button = 1;	/* Indicates "Help" button is selected */
				print_buttons(dialog, height, width, 1);
				break;
			case 1:
				button = -1;	/* Indicates input box is selected */
				print_buttons(dialog, height, width, 0);
				wmove(dialog, box_y, box_x + input_x);
				wrefresh(dialog);
				break;
			}
			break;
		case ' ':
		case '\n':
			delwin(dialog);
			return (button == -1 ? 0 : button);
		case 'X':
		case 'x':
			key = KEY_ESC;
			break;
		case KEY_ESC:
			key = on_key_esc(dialog);
			break;
		case KEY_RESIZE:
			delwin(dialog);
			on_key_resize();
			goto do_resize;
		}
	}

delwin(dialog);
	return KEY_ESC;		/* ESC pressed */
}

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