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u-boot/scripts/kconfig/lxdialog/util.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

700 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* util.c
*
* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
*/
#include <stdarg.h>
#include "dialog.h"
/* Needed in signal handler in mconf.c */
int saved_x, saved_y;
struct dialog_info dlg;
static void set_mono_theme(void)
{
dlg.screen.atr = A_NORMAL;
dlg.shadow.atr = A_NORMAL;
dlg.dialog.atr = A_NORMAL;
dlg.title.atr = A_BOLD;
dlg.border.atr = A_NORMAL;
dlg.button_active.atr = A_REVERSE;
dlg.button_inactive.atr = A_DIM;
dlg.button_key_active.atr = A_REVERSE;
dlg.button_key_inactive.atr = A_BOLD;
dlg.button_label_active.atr = A_REVERSE;
dlg.button_label_inactive.atr = A_NORMAL;
dlg.inputbox.atr = A_NORMAL;
dlg.inputbox_border.atr = A_NORMAL;
dlg.searchbox.atr = A_NORMAL;
dlg.searchbox_title.atr = A_BOLD;
dlg.searchbox_border.atr = A_NORMAL;
dlg.position_indicator.atr = A_BOLD;
dlg.menubox.atr = A_NORMAL;
dlg.menubox_border.atr = A_NORMAL;
dlg.item.atr = A_NORMAL;
dlg.item_selected.atr = A_REVERSE;
dlg.tag.atr = A_BOLD;
dlg.tag_selected.atr = A_REVERSE;
dlg.tag_key.atr = A_BOLD;
dlg.tag_key_selected.atr = A_REVERSE;
dlg.check.atr = A_BOLD;
dlg.check_selected.atr = A_REVERSE;
dlg.uarrow.atr = A_BOLD;
dlg.darrow.atr = A_BOLD;
}
#define DLG_COLOR(dialog, f, b, h) \
do { \
dlg.dialog.fg = (f); \
dlg.dialog.bg = (b); \
dlg.dialog.hl = (h); \
} while (0)
static void set_classic_theme(void)
{
DLG_COLOR(screen, COLOR_CYAN, COLOR_BLUE, true);
DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, true);
DLG_COLOR(dialog, COLOR_BLACK, COLOR_WHITE, false);
DLG_COLOR(title, COLOR_YELLOW, COLOR_WHITE, true);
DLG_COLOR(border, COLOR_WHITE, COLOR_WHITE, true);
DLG_COLOR(button_active, COLOR_WHITE, COLOR_BLUE, true);
DLG_COLOR(button_inactive, COLOR_BLACK, COLOR_WHITE, false);
DLG_COLOR(button_key_active, COLOR_WHITE, COLOR_BLUE, true);
DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_WHITE, false);
DLG_COLOR(button_label_active, COLOR_YELLOW, COLOR_BLUE, true);
DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_WHITE, true);
DLG_COLOR(inputbox, COLOR_BLACK, COLOR_WHITE, false);
DLG_COLOR(inputbox_border, COLOR_BLACK, COLOR_WHITE, false);
DLG_COLOR(searchbox, COLOR_BLACK, COLOR_WHITE, false);
DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_WHITE, true);
DLG_COLOR(searchbox_border, COLOR_WHITE, COLOR_WHITE, true);
DLG_COLOR(position_indicator, COLOR_YELLOW, COLOR_WHITE, true);
DLG_COLOR(menubox, COLOR_BLACK, COLOR_WHITE, false);
DLG_COLOR(menubox_border, COLOR_WHITE, COLOR_WHITE, true);
DLG_COLOR(item, COLOR_BLACK, COLOR_WHITE, false);
DLG_COLOR(item_selected, COLOR_WHITE, COLOR_BLUE, true);
DLG_COLOR(tag, COLOR_YELLOW, COLOR_WHITE, true);
DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_BLUE, true);
DLG_COLOR(tag_key, COLOR_YELLOW, COLOR_WHITE, true);
DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_BLUE, true);
DLG_COLOR(check, COLOR_BLACK, COLOR_WHITE, false);
DLG_COLOR(check_selected, COLOR_WHITE, COLOR_BLUE, true);
DLG_COLOR(uarrow, COLOR_GREEN, COLOR_WHITE, true);
DLG_COLOR(darrow, COLOR_GREEN, COLOR_WHITE, true);
}
static void set_blackbg_theme(void)
{
DLG_COLOR(screen, COLOR_RED, COLOR_BLACK, true);
DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
DLG_COLOR(title, COLOR_RED, COLOR_BLACK, false);
DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);
DLG_COLOR(button_active, COLOR_YELLOW, COLOR_RED, false);
DLG_COLOR(button_inactive, COLOR_YELLOW, COLOR_BLACK, false);
DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_RED, true);
DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_BLACK, false);
DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_RED, false);
DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_BLACK, true);
DLG_COLOR(inputbox, COLOR_YELLOW, COLOR_BLACK, false);
DLG_COLOR(inputbox_border, COLOR_YELLOW, COLOR_BLACK, false);
DLG_COLOR(searchbox, COLOR_YELLOW, COLOR_BLACK, false);
DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_BLACK, true);
DLG_COLOR(searchbox_border, COLOR_BLACK, COLOR_BLACK, true);
DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK, false);
DLG_COLOR(menubox, COLOR_YELLOW, COLOR_BLACK, false);
DLG_COLOR(menubox_border, COLOR_BLACK, COLOR_BLACK, true);
DLG_COLOR(item, COLOR_WHITE, COLOR_BLACK, false);
DLG_COLOR(item_selected, COLOR_WHITE, COLOR_RED, false);
DLG_COLOR(tag, COLOR_RED, COLOR_BLACK, false);
DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_RED, true);
DLG_COLOR(tag_key, COLOR_RED, COLOR_BLACK, false);
DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED, true);
DLG_COLOR(check, COLOR_YELLOW, COLOR_BLACK, false);
DLG_COLOR(check_selected, COLOR_YELLOW, COLOR_RED, true);
DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
}
static void set_bluetitle_theme(void)
{
set_classic_theme();
DLG_COLOR(title, COLOR_BLUE, COLOR_WHITE, true);
DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_BLUE, true);
DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_BLUE, true);
DLG_COLOR(searchbox_title, COLOR_BLUE, COLOR_WHITE, true);
DLG_COLOR(position_indicator, COLOR_BLUE, COLOR_WHITE, true);
DLG_COLOR(tag, COLOR_BLUE, COLOR_WHITE, true);
DLG_COLOR(tag_key, COLOR_BLUE, COLOR_WHITE, true);
}
/*
* Select color theme
*/
static int set_theme(const char *theme)
{
int use_color = 1;
if (!theme)
set_bluetitle_theme();
else if (strcmp(theme, "classic") == 0)
set_classic_theme();
else if (strcmp(theme, "bluetitle") == 0)
set_bluetitle_theme();
else if (strcmp(theme, "blackbg") == 0)
set_blackbg_theme();
else if (strcmp(theme, "mono") == 0)
use_color = 0;
return use_color;
}
static void init_one_color(struct dialog_color *color)
{
static int pair = 0;
pair++;
init_pair(pair, color->fg, color->bg);
if (color->hl)
color->atr = A_BOLD | COLOR_PAIR(pair);
else
color->atr = COLOR_PAIR(pair);
}
static void init_dialog_colors(void)
{
init_one_color(&dlg.screen);
init_one_color(&dlg.shadow);
init_one_color(&dlg.dialog);
init_one_color(&dlg.title);
init_one_color(&dlg.border);
init_one_color(&dlg.button_active);
init_one_color(&dlg.button_inactive);
init_one_color(&dlg.button_key_active);
init_one_color(&dlg.button_key_inactive);
init_one_color(&dlg.button_label_active);
init_one_color(&dlg.button_label_inactive);
init_one_color(&dlg.inputbox);
init_one_color(&dlg.inputbox_border);
init_one_color(&dlg.searchbox);
init_one_color(&dlg.searchbox_title);
init_one_color(&dlg.searchbox_border);
init_one_color(&dlg.position_indicator);
init_one_color(&dlg.menubox);
init_one_color(&dlg.menubox_border);
init_one_color(&dlg.item);
init_one_color(&dlg.item_selected);
init_one_color(&dlg.tag);
init_one_color(&dlg.tag_selected);
init_one_color(&dlg.tag_key);
init_one_color(&dlg.tag_key_selected);
init_one_color(&dlg.check);
init_one_color(&dlg.check_selected);
init_one_color(&dlg.uarrow);
init_one_color(&dlg.darrow);
}
/*
* Setup for color display
*/
static void color_setup(const char *theme)
{
int use_color;
use_color = set_theme(theme);
if (use_color && has_colors()) {
start_color();
init_dialog_colors();
} else
set_mono_theme();
}
/*
* 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)
{
int lines, columns;
lines = getmaxy(stdscr);
columns = getmaxx(stdscr);
attr_clear(stdscr, lines, columns, dlg.screen.atr);
/* Display background title if it exists ... - SLH */
if (dlg.backtitle != NULL) {
int i, len = 0, skip = 0;
struct subtitle_list *pos;
wattrset(stdscr, dlg.screen.atr);
mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
/* 3 is for the arrow and spaces */
len += strlen(pos->text) + 3;
}
wmove(stdscr, 1, 1);
if (len > columns - 2) {
const char *ellipsis = "[...] ";
waddstr(stdscr, ellipsis);
skip = len - (columns - 2 - strlen(ellipsis));
}
for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
if (skip == 0)
waddch(stdscr, ACS_RARROW);
else
skip--;
if (skip == 0)
waddch(stdscr, ' ');
else
skip--;
if (skip < strlen(pos->text)) {
waddstr(stdscr, pos->text + skip);
skip = 0;
} else
skip -= strlen(pos->text);
if (skip == 0)
waddch(stdscr, ' ');
else
skip--;
}
for (i = len + 1; i < columns - 1; i++)
waddch(stdscr, ACS_HLINE);
}
wnoutrefresh(stdscr);
}
/*
* Do some initialization for dialog
*/
int init_dialog(const char *backtitle)
{
int height, width;
initscr(); /* Init curses */
/* Get current cursor position for signal handler in mconf.c */
getyx(stdscr, saved_y, saved_x);
getmaxyx(stdscr, height, width);
if (height < WINDOW_HEIGTH_MIN || width < WINDOW_WIDTH_MIN) {
endwin();
return -ERRDISPLAYTOOSMALL;
}
dlg.backtitle = backtitle;
color_setup(getenv("MENUCONFIG_COLOR"));
keypad(stdscr, TRUE);
cbreak();
noecho();
dialog_clear();
return 0;
}
void set_dialog_backtitle(const char *backtitle)
{
dlg.backtitle = backtitle;
}
void set_dialog_subtitles(struct subtitle_list *subtitles)
{
dlg.subtitles = subtitles;
}
/*
* End using dialog functions.
*/
void end_dialog(int x, int y)
{
/* move cursor back to original position */
move(y, x);
refresh();
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, dlg.title.atr);
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 propperly processed. 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 prompt_len, room, wlen;
char tempstr[MAX_LEN + 1], *word, *sp, *sp2, *newline_separator = 0;
strcpy(tempstr, prompt);
prompt_len = strlen(tempstr);
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 = strpbrk(word, "\n ");
if (sp && *sp == '\n')
newline_separator = sp;
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 = strpbrk(sp, "\n "))
|| 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);
/* Move to the next line if the word separator was a newline */
if (newline_separator) {
cur_y++;
cur_x = x;
newline_separator = 0;
} else
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 ? dlg.button_active.atr
: dlg.button_inactive.atr);
waddstr(win, "<");
temp = strspn(label, " ");
label += temp;
wattrset(win, selected ? dlg.button_label_active.atr
: dlg.button_label_inactive.atr);
for (i = 0; i < temp; i++)
waddch(win, ' ');
wattrset(win, selected ? dlg.button_key_active.atr
: dlg.button_key_inactive.atr);
waddch(win, label[0]);
wattrset(win, selected ? dlg.button_label_active.atr
: dlg.button_label_inactive.atr);
waddstr(win, (char *)label + 1);
wattrset(win, selected ? dlg.button_active.atr
: dlg.button_inactive.atr);
waddstr(win, ">");
wmove(win, y, x + temp + 1);
}
/*
* Draw a rectangular box with line drawing characters
*/
void
draw_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, dlg.shadow.atr);
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;
}
/*
* ncurses uses ESC to detect escaped char sequences. This resutl in
* a small timeout before ESC is actually delivered to the application.
* lxdialog suggest <ESC> <ESC> which is correctly translated to two
* times esc. But then we need to ignore the second esc to avoid stepping
* out one menu too much. Filter away all escaped key sequences since
* keypad(FALSE) turn off ncurses support for escape sequences - and thats
* needed to make notimeout() do as expected.
*/
int on_key_esc(WINDOW *win)
{
int key;
int key2;
int key3;
nodelay(win, TRUE);
keypad(win, FALSE);
key = wgetch(win);
key2 = wgetch(win);
do {
key3 = wgetch(win);
} while (key3 != ERR);
nodelay(win, FALSE);
keypad(win, TRUE);
if (key == KEY_ESC && key2 == ERR)
return KEY_ESC;
else if (key != ERR && key != KEY_ESC && key2 == ERR)
ungetch(key);
return -1;
}
/* redraw screen in new size */
int on_key_resize(void)
{
dialog_clear();
return KEY_RESIZE;
}
struct dialog_list *item_cur;
struct dialog_list item_nil;
struct dialog_list *item_head;
void item_reset(void)
{
struct dialog_list *p, *next;
for (p = item_head; p; p = next) {
next = p->next;
free(p);
}
item_head = NULL;
item_cur = &item_nil;
}
void item_make(const char *fmt, ...)
{
va_list ap;
struct dialog_list *p = malloc(sizeof(*p));
if (item_head)
item_cur->next = p;
else
item_head = p;
item_cur = p;
memset(p, 0, sizeof(*p));
va_start(ap, fmt);
vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
va_end(ap);
}
void item_add_str(const char *fmt, ...)
{
va_list ap;
size_t avail;
avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
va_start(ap, fmt);
vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
avail, fmt, ap);
item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
va_end(ap);
}
void item_set_tag(char tag)
{
item_cur->node.tag = tag;
}
void item_set_data(void *ptr)
{
item_cur->node.data = ptr;
}
void item_set_selected(int val)
{
item_cur->node.selected = val;
}
int item_activate_selected(void)
{
item_foreach()
if (item_is_selected())
return 1;
return 0;
}
void *item_data(void)
{
return item_cur->node.data;
}
char item_tag(void)
{
return item_cur->node.tag;
}
int item_count(void)
{
int n = 0;
struct dialog_list *p;
for (p = item_head; p; p = p->next)
n++;
return n;
}
void item_set(int n)
{
int i = 0;
item_foreach()
if (i++ == n)
return;
}
int item_n(void)
{
int n = 0;
struct dialog_list *p;
for (p = item_head; p; p = p->next) {
if (p == item_cur)
return n;
n++;
}
return 0;
}
const char *item_str(void)
{
return item_cur->node.str;
}
int item_is_selected(void)
{
return (item_cur->node.selected != 0);
}
int item_is_tag(char tag)
{
return (item_cur->node.tag == tag);
}
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