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/*
* $Id: savescreen.c,v 1.15 2011/01/15 18:15:11 tom Exp $
*
* Demonstrate save/restore functions from the curses library.
* Thomas Dickey - 2007/7/14
*/
#include <test.priv.h>
#if HAVE_SCR_DUMP
#include <sys/types.h>
#include <sys/stat.h>
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
static bool use_init = FALSE;
static int
fexists(const char *name)
{
struct stat sb;
return (stat(name, &sb) == 0 && (sb.st_mode & S_IFMT) == S_IFREG);
}
static void
setup_next(void)
{
curs_set(1);
reset_shell_mode();
}
static void
cleanup(char *files[])
{
int n;
for (n = 0; files[n] != 0; ++n) {
unlink(files[n]);
}
}
static int
load_screen(char *filename)
{
int result;
if (use_init) {
if ((result = scr_init(filename)) != ERR)
result = scr_restore(filename);
} else {
result = scr_set(filename);
}
return result;
}
/*
* scr_restore() or scr_set() operates on curscr. If we read a character using
* getch() that will refresh stdscr, wiping out the result. To avoid that,
* copy the data back from curscr to stdscr.
*/
static void
after_load(void)
{
overwrite(curscr, stdscr);
doupdate();
}
static void
show_what(int which, int last)
{
int y, x;
time_t now = time((time_t *) 0);
getyx(stdscr, y, x);
move(0, 0);
printw("Saved %d of %d - %s", which, last + 1, ctime(&now));
move(y, x);
refresh();
}
static int
get_command(int which, int last)
{
int ch;
timeout(100);
do {
show_what(which, last);
ch = getch();
} while (ch == ERR);
return ch;
}
static void
usage(void)
{
static const char *msg[] =
{
"Usage: savescreen [-r] files",
"",
"Options:",
" -i use scr_init/scr_restore rather than scr_set",
" -r replay the screen-dump files"
};
unsigned n;
for (n = 0; n < SIZEOF(msg); ++n) {
fprintf(stderr, "%s\n", msg[n]);
}
ExitProgram(EXIT_FAILURE);
}
int
main(int argc, char *argv[])
{
int ch;
int which = 0;
int last;
bool replaying = FALSE;
bool done = FALSE;
char **files;
while ((ch = getopt(argc, argv, "ir")) != -1) {
switch (ch) {
case 'i':
use_init = TRUE;
break;
case 'r':
replaying = TRUE;
break;
default:
usage();
break;
}
}
files = argv + optind;
last = argc - optind - 1;
if (replaying) {
while (last >= 0 && !fexists(files[last]))
--last;
}
initscr();
cbreak();
noecho();
keypad(stdscr, TRUE);
curs_set(0);
if (has_colors()) {
start_color();
for (ch = 0; ch < COLOR_PAIRS; ++ch) {
short pair = (short) (ch % COLOR_PAIRS);
init_pair(pair, COLOR_WHITE, (short) (ch % COLORS));
}
}
if (replaying) {
/*
* Use the last file as the initial/current screen.
*/
if (last < 0) {
endwin();
printf("No screen-dumps given\n");
ExitProgram(EXIT_FAILURE);
}
which = last;
if (load_screen(files[which]) == ERR) {
endwin();
printf("Cannot load screen-dump %s\n", files[which]);
ExitProgram(EXIT_FAILURE);
}
after_load();
while (!done && (ch = getch()) != ERR) {
switch (ch) {
case 'n':
/*
* If we got a "next" here, skip to the final screen before
* moving to the next process.
*/
setup_next();
which = last;
done = TRUE;
break;
case 'q':
endwin();
cleanup(files);
done = TRUE;
break;
case KEY_BACKSPACE:
case '\b':
if (--which < 0)
which = last;
break;
case ' ':
if (++which > last)
which = 0;
break;
default:
beep();
continue;
}
if (ch == 'q') {
;
} else if (scr_restore(files[which]) == ERR) {
endwin();
printf("Cannot load screen-dump %s\n", files[which]);
cleanup(files);
ExitProgram(EXIT_FAILURE);
} else {
wrefresh(curscr);
}
}
} else {
int y;
int x;
move(2, 0);
printw("Use h,j,k,l or arrows to move around the screen\n");
printw("Press 'q' to quit, ' ' to dump a screen\n");
printw("When the last screen has been dumped, press 'n' to run the\n");
printw("screen-loader. That allows only 'q', backspace and ' ' for\n");
printw("stepping through the dumped/restored screens.\n");
getyx(stdscr, y, x);
while (!done) {
switch (get_command(which, last)) {
case 'n':
setup_next();
done = TRUE;
break;
case 'q':
endwin();
cleanup(files);
done = TRUE;
break;
case ' ':
if (files[which] != 0) {
show_what(which + 1, last);
if (scr_dump(files[which]) == ERR) {
endwin();
printf("Cannot write screen-dump %s\n", files[which]);
cleanup(files);
done = TRUE;
break;
}
++which;
if (has_colors()) {
short pair = (short) (which % COLOR_PAIRS);
bkgd((chtype) COLOR_PAIR(pair));
}
} else {
beep();
}
break;
case KEY_LEFT:
case 'h':
if (--x < 0)
x = COLS - 1;
break;
case KEY_DOWN:
case 'j':
if (++y >= LINES)
y = 1;
break;
case KEY_UP:
case 'k':
if (--y < 1)
y = LINES - 1;
break;
case KEY_RIGHT:
case 'l':
if (++x >= COLS)
x = 0;
break;
}
if (!done) {
time_t now = time((time_t *) 0);
move(0, 0);
addstr(ctime(&now));
move(y, x);
addch('#' | A_REVERSE);
move(y, x);
}
}
}
ExitProgram(EXIT_SUCCESS);
}
#else
int
main(int argc, char *argv[])
{
printf("This program requires the screen-dump functions\n");
ExitProgram(EXIT_FAILURE);
}
#endif
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