%PDF-
%PDF-
Mini Shell
Mini Shell
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com>
*
* Derived from menuconfig.
*/
#include "nconf.h"
#include "lkc.h"
int attr_normal;
int attr_main_heading;
int attr_main_menu_box;
int attr_main_menu_fore;
int attr_main_menu_back;
int attr_main_menu_grey;
int attr_main_menu_heading;
int attr_scrollwin_text;
int attr_scrollwin_heading;
int attr_scrollwin_box;
int attr_dialog_text;
int attr_dialog_menu_fore;
int attr_dialog_menu_back;
int attr_dialog_box;
int attr_input_box;
int attr_input_heading;
int attr_input_text;
int attr_input_field;
int attr_function_text;
int attr_function_highlight;
#define COLOR_ATTR(_at, _fg, _bg, _hl) \
{ .attr = &(_at), .has_color = true, .color_fg = _fg, .color_bg = _bg, .highlight = _hl }
#define NO_COLOR_ATTR(_at, _hl) \
{ .attr = &(_at), .has_color = false, .highlight = _hl }
#define COLOR_DEFAULT -1
struct nconf_attr_param {
int *attr;
bool has_color;
int color_fg;
int color_bg;
int highlight;
};
static const struct nconf_attr_param color_theme_params[] = {
COLOR_ATTR(attr_normal, COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL),
COLOR_ATTR(attr_main_heading, COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD | A_UNDERLINE),
COLOR_ATTR(attr_main_menu_box, COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL),
COLOR_ATTR(attr_main_menu_fore, COLOR_DEFAULT, COLOR_DEFAULT, A_REVERSE),
COLOR_ATTR(attr_main_menu_back, COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL),
COLOR_ATTR(attr_main_menu_grey, COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL),
COLOR_ATTR(attr_main_menu_heading, COLOR_GREEN, COLOR_DEFAULT, A_BOLD),
COLOR_ATTR(attr_scrollwin_text, COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL),
COLOR_ATTR(attr_scrollwin_heading, COLOR_GREEN, COLOR_DEFAULT, A_BOLD),
COLOR_ATTR(attr_scrollwin_box, COLOR_YELLOW, COLOR_DEFAULT, A_BOLD),
COLOR_ATTR(attr_dialog_text, COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD),
COLOR_ATTR(attr_dialog_menu_fore, COLOR_RED, COLOR_DEFAULT, A_STANDOUT),
COLOR_ATTR(attr_dialog_menu_back, COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL),
COLOR_ATTR(attr_dialog_box, COLOR_YELLOW, COLOR_DEFAULT, A_BOLD),
COLOR_ATTR(attr_input_box, COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL),
COLOR_ATTR(attr_input_heading, COLOR_GREEN, COLOR_DEFAULT, A_BOLD),
COLOR_ATTR(attr_input_text, COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL),
COLOR_ATTR(attr_input_field, COLOR_DEFAULT, COLOR_DEFAULT, A_UNDERLINE),
COLOR_ATTR(attr_function_text, COLOR_YELLOW, COLOR_DEFAULT, A_REVERSE),
COLOR_ATTR(attr_function_highlight, COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD),
{ /* sentinel */ }
};
static const struct nconf_attr_param no_color_theme_params[] = {
NO_COLOR_ATTR(attr_normal, A_NORMAL),
NO_COLOR_ATTR(attr_main_heading, A_BOLD | A_UNDERLINE),
NO_COLOR_ATTR(attr_main_menu_box, A_NORMAL),
NO_COLOR_ATTR(attr_main_menu_fore, A_STANDOUT),
NO_COLOR_ATTR(attr_main_menu_back, A_NORMAL),
NO_COLOR_ATTR(attr_main_menu_grey, A_NORMAL),
NO_COLOR_ATTR(attr_main_menu_heading, A_BOLD),
NO_COLOR_ATTR(attr_scrollwin_text, A_NORMAL),
NO_COLOR_ATTR(attr_scrollwin_heading, A_BOLD),
NO_COLOR_ATTR(attr_scrollwin_box, A_BOLD),
NO_COLOR_ATTR(attr_dialog_text, A_NORMAL),
NO_COLOR_ATTR(attr_dialog_menu_fore, A_STANDOUT),
NO_COLOR_ATTR(attr_dialog_menu_back, A_NORMAL),
NO_COLOR_ATTR(attr_dialog_box, A_BOLD),
NO_COLOR_ATTR(attr_input_box, A_BOLD),
NO_COLOR_ATTR(attr_input_heading, A_BOLD),
NO_COLOR_ATTR(attr_input_text, A_NORMAL),
NO_COLOR_ATTR(attr_input_field, A_UNDERLINE),
NO_COLOR_ATTR(attr_function_text, A_REVERSE),
NO_COLOR_ATTR(attr_function_highlight, A_BOLD),
{ /* sentinel */ }
};
void set_colors(void)
{
const struct nconf_attr_param *p;
int pair = 0;
if (has_colors()) {
start_color();
use_default_colors();
p = color_theme_params;
} else {
p = no_color_theme_params;
}
for (; p->attr; p++) {
int attr = p->highlight;
if (p->has_color) {
pair++;
init_pair(pair, p->color_fg, p->color_bg);
attr |= COLOR_PAIR(pair);
}
*p->attr = attr;
}
}
/* this changes the windows attributes !!! */
void print_in_middle(WINDOW *win, int y, int width, const char *str, int attrs)
{
wattrset(win, attrs);
mvwprintw(win, y, (width - strlen(str)) / 2, "%s", str);
}
int get_line_no(const char *text)
{
int i;
int total = 1;
if (!text)
return 0;
for (i = 0; text[i] != '\0'; i++)
if (text[i] == '\n')
total++;
return total;
}
const char *get_line(const char *text, int line_no)
{
int i;
int lines = 0;
if (!text)
return NULL;
for (i = 0; text[i] != '\0' && lines < line_no; i++)
if (text[i] == '\n')
lines++;
return text+i;
}
int get_line_length(const char *line)
{
int res = 0;
while (*line != '\0' && *line != '\n') {
line++;
res++;
}
return res;
}
/* print all lines to the window. */
void fill_window(WINDOW *win, const char *text)
{
int x, y;
int total_lines = get_line_no(text);
int i;
getmaxyx(win, y, x);
/* do not go over end of line */
total_lines = min(total_lines, y);
for (i = 0; i < total_lines; i++) {
char tmp[x+10];
const char *line = get_line(text, i);
int len = get_line_length(line);
strncpy(tmp, line, min(len, x));
tmp[len] = '\0';
mvwprintw(win, i, 0, "%s", tmp);
}
}
/* get the message, and buttons.
* each button must be a char*
* return the selected button
*
* this dialog is used for 2 different things:
* 1) show a text box, no buttons.
* 2) show a dialog, with horizontal buttons
*/
int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...)
{
va_list ap;
char *btn;
int btns_width = 0;
int msg_lines = 0;
int msg_width = 0;
int total_width;
int win_rows = 0;
WINDOW *win;
WINDOW *msg_win;
WINDOW *menu_win;
MENU *menu;
ITEM *btns[btn_num+1];
int i, x, y;
int res = -1;
va_start(ap, btn_num);
for (i = 0; i < btn_num; i++) {
btn = va_arg(ap, char *);
btns[i] = new_item(btn, "");
btns_width += strlen(btn)+1;
}
va_end(ap);
btns[btn_num] = NULL;
/* find the widest line of msg: */
msg_lines = get_line_no(msg);
for (i = 0; i < msg_lines; i++) {
const char *line = get_line(msg, i);
int len = get_line_length(line);
if (msg_width < len)
msg_width = len;
}
total_width = max(msg_width, btns_width);
/* place dialog in middle of screen */
y = (getmaxy(stdscr)-(msg_lines+4))/2;
x = (getmaxx(stdscr)-(total_width+4))/2;
/* create the windows */
if (btn_num > 0)
win_rows = msg_lines+4;
else
win_rows = msg_lines+2;
win = newwin(win_rows, total_width+4, y, x);
keypad(win, TRUE);
menu_win = derwin(win, 1, btns_width, win_rows-2,
1+(total_width+2-btns_width)/2);
menu = new_menu(btns);
msg_win = derwin(win, win_rows-2, msg_width, 1,
1+(total_width+2-msg_width)/2);
set_menu_fore(menu, attr_dialog_menu_fore);
set_menu_back(menu, attr_dialog_menu_back);
wattrset(win, attr_dialog_box);
box(win, 0, 0);
/* print message */
wattrset(msg_win, attr_dialog_text);
fill_window(msg_win, msg);
set_menu_win(menu, win);
set_menu_sub(menu, menu_win);
set_menu_format(menu, 1, btn_num);
menu_opts_off(menu, O_SHOWDESC);
menu_opts_off(menu, O_SHOWMATCH);
menu_opts_on(menu, O_ONEVALUE);
menu_opts_on(menu, O_NONCYCLIC);
set_menu_mark(menu, "");
post_menu(menu);
touchwin(win);
refresh_all_windows(main_window);
while ((res = wgetch(win))) {
switch (res) {
case KEY_LEFT:
menu_driver(menu, REQ_LEFT_ITEM);
break;
case KEY_RIGHT:
menu_driver(menu, REQ_RIGHT_ITEM);
break;
case 10: /* ENTER */
case 27: /* ESCAPE */
case ' ':
case KEY_F(F_BACK):
case KEY_F(F_EXIT):
break;
}
touchwin(win);
refresh_all_windows(main_window);
if (res == 10 || res == ' ') {
res = item_index(current_item(menu));
break;
} else if (res == 27 || res == KEY_F(F_BACK) ||
res == KEY_F(F_EXIT)) {
res = KEY_EXIT;
break;
}
}
unpost_menu(menu);
free_menu(menu);
for (i = 0; i < btn_num; i++)
free_item(btns[i]);
delwin(win);
return res;
}
int dialog_inputbox(WINDOW *main_window,
const char *title, const char *prompt,
const char *init, char **resultp, int *result_len)
{
int prompt_lines = 0;
int prompt_width = 0;
WINDOW *win;
WINDOW *prompt_win;
WINDOW *form_win;
PANEL *panel;
int i, x, y, lines, columns, win_lines, win_cols;
int res = -1;
int cursor_position = strlen(init);
int cursor_form_win;
char *result = *resultp;
getmaxyx(stdscr, lines, columns);
if (strlen(init)+1 > *result_len) {
*result_len = strlen(init)+1;
*resultp = result = xrealloc(result, *result_len);
}
/* find the widest line of msg: */
prompt_lines = get_line_no(prompt);
for (i = 0; i < prompt_lines; i++) {
const char *line = get_line(prompt, i);
int len = get_line_length(line);
prompt_width = max(prompt_width, len);
}
if (title)
prompt_width = max(prompt_width, strlen(title));
win_lines = min(prompt_lines+6, lines-2);
win_cols = min(prompt_width+7, columns-2);
prompt_lines = max(win_lines-6, 0);
prompt_width = max(win_cols-7, 0);
/* place dialog in middle of screen */
y = (lines-win_lines)/2;
x = (columns-win_cols)/2;
strncpy(result, init, *result_len);
/* create the windows */
win = newwin(win_lines, win_cols, y, x);
prompt_win = derwin(win, prompt_lines+1, prompt_width, 2, 2);
form_win = derwin(win, 1, prompt_width, prompt_lines+3, 2);
keypad(form_win, TRUE);
wattrset(form_win, attr_input_field);
wattrset(win, attr_input_box);
box(win, 0, 0);
wattrset(win, attr_input_heading);
if (title)
mvwprintw(win, 0, 3, "%s", title);
/* print message */
wattrset(prompt_win, attr_input_text);
fill_window(prompt_win, prompt);
mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
cursor_form_win = min(cursor_position, prompt_width-1);
mvwprintw(form_win, 0, 0, "%s",
result + cursor_position-cursor_form_win);
/* create panels */
panel = new_panel(win);
/* show the cursor */
curs_set(1);
touchwin(win);
refresh_all_windows(main_window);
while ((res = wgetch(form_win))) {
int len = strlen(result);
switch (res) {
case 10: /* ENTER */
case 27: /* ESCAPE */
case KEY_F(F_HELP):
case KEY_F(F_EXIT):
case KEY_F(F_BACK):
break;
case 8: /* ^H */
case 127: /* ^? */
case KEY_BACKSPACE:
if (cursor_position > 0) {
memmove(&result[cursor_position-1],
&result[cursor_position],
len-cursor_position+1);
cursor_position--;
cursor_form_win--;
len--;
}
break;
case KEY_DC:
if (cursor_position >= 0 && cursor_position < len) {
memmove(&result[cursor_position],
&result[cursor_position+1],
len-cursor_position+1);
len--;
}
break;
case KEY_UP:
case KEY_RIGHT:
if (cursor_position < len) {
cursor_position++;
cursor_form_win++;
}
break;
case KEY_DOWN:
case KEY_LEFT:
if (cursor_position > 0) {
cursor_position--;
cursor_form_win--;
}
break;
case KEY_HOME:
cursor_position = 0;
cursor_form_win = 0;
break;
case KEY_END:
cursor_position = len;
cursor_form_win = min(cursor_position, prompt_width-1);
break;
default:
if ((isgraph(res) || isspace(res))) {
/* one for new char, one for '\0' */
if (len+2 > *result_len) {
*result_len = len+2;
*resultp = result = realloc(result,
*result_len);
}
/* insert the char at the proper position */
memmove(&result[cursor_position+1],
&result[cursor_position],
len-cursor_position+1);
result[cursor_position] = res;
cursor_position++;
cursor_form_win++;
len++;
} else {
mvprintw(0, 0, "unknown key: %d\n", res);
}
break;
}
if (cursor_form_win < 0)
cursor_form_win = 0;
else if (cursor_form_win > prompt_width-1)
cursor_form_win = prompt_width-1;
wmove(form_win, 0, 0);
wclrtoeol(form_win);
mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
mvwprintw(form_win, 0, 0, "%s",
result + cursor_position-cursor_form_win);
wmove(form_win, 0, cursor_form_win);
touchwin(win);
refresh_all_windows(main_window);
if (res == 10) {
res = 0;
break;
} else if (res == 27 || res == KEY_F(F_BACK) ||
res == KEY_F(F_EXIT)) {
res = KEY_EXIT;
break;
} else if (res == KEY_F(F_HELP)) {
res = 1;
break;
}
}
/* hide the cursor */
curs_set(0);
del_panel(panel);
delwin(prompt_win);
delwin(form_win);
delwin(win);
return res;
}
/* refresh all windows in the correct order */
void refresh_all_windows(WINDOW *main_window)
{
update_panels();
touchwin(main_window);
refresh();
}
/* layman's scrollable window... */
void show_scroll_win(WINDOW *main_window,
const char *title,
const char *text)
{
int res;
int total_lines = get_line_no(text);
int x, y, lines, columns;
int start_x = 0, start_y = 0;
int text_lines = 0, text_cols = 0;
int total_cols = 0;
int win_cols = 0;
int win_lines = 0;
int i = 0;
WINDOW *win;
WINDOW *pad;
PANEL *panel;
getmaxyx(stdscr, lines, columns);
/* find the widest line of msg: */
total_lines = get_line_no(text);
for (i = 0; i < total_lines; i++) {
const char *line = get_line(text, i);
int len = get_line_length(line);
total_cols = max(total_cols, len+2);
}
/* create the pad */
pad = newpad(total_lines+10, total_cols+10);
wattrset(pad, attr_scrollwin_text);
fill_window(pad, text);
win_lines = min(total_lines+4, lines-2);
win_cols = min(total_cols+2, columns-2);
text_lines = max(win_lines-4, 0);
text_cols = max(win_cols-2, 0);
/* place window in middle of screen */
y = (lines-win_lines)/2;
x = (columns-win_cols)/2;
win = newwin(win_lines, win_cols, y, x);
keypad(win, TRUE);
/* show the help in the help window, and show the help panel */
wattrset(win, attr_scrollwin_box);
box(win, 0, 0);
wattrset(win, attr_scrollwin_heading);
mvwprintw(win, 0, 3, " %s ", title);
panel = new_panel(win);
/* handle scrolling */
do {
copywin(pad, win, start_y, start_x, 2, 2, text_lines,
text_cols, 0);
print_in_middle(win,
text_lines+2,
text_cols,
"<OK>",
attr_dialog_menu_fore);
wrefresh(win);
res = wgetch(win);
switch (res) {
case KEY_NPAGE:
case ' ':
case 'd':
start_y += text_lines-2;
break;
case KEY_PPAGE:
case 'u':
start_y -= text_lines+2;
break;
case KEY_HOME:
start_y = 0;
break;
case KEY_END:
start_y = total_lines-text_lines;
break;
case KEY_DOWN:
case 'j':
start_y++;
break;
case KEY_UP:
case 'k':
start_y--;
break;
case KEY_LEFT:
case 'h':
start_x--;
break;
case KEY_RIGHT:
case 'l':
start_x++;
break;
}
if (res == 10 || res == 27 || res == 'q' ||
res == KEY_F(F_HELP) || res == KEY_F(F_BACK) ||
res == KEY_F(F_EXIT))
break;
if (start_y < 0)
start_y = 0;
if (start_y >= total_lines-text_lines)
start_y = total_lines-text_lines;
if (start_x < 0)
start_x = 0;
if (start_x >= total_cols-text_cols)
start_x = total_cols-text_cols;
} while (res);
del_panel(panel);
delwin(win);
refresh_all_windows(main_window);
}
Zerion Mini Shell 1.0