freebsd-dev/contrib/ncurses/test/filter.c
Peter Wemm 39f2269fcb Import ncurses-5.2-20020518 onto the vendor branch.
Obtained from: ftp://dickey.his.com/ncurses/
2002-05-21 05:30:25 +00:00

104 lines
3.8 KiB
C

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/*
* Author: Thomas E. Dickey <dickey@clark.net> 1998
*
* $Id: filter.c,v 1.7 2002/03/23 23:02:15 tom Exp $
*/
#include <test.priv.h>
/*
* An example of the 'filter()' function in ncurses, this program prompts
* for commands and executes them (like a command shell). It illustrates
* how ncurses can be used to implement programs that are not full-screen.
*
* Ncurses differs slightly from SVr4 curses. The latter does not flush its
* state when exiting program mode, so the attributes on the command lines of
* this program 'bleed' onto the executed commands. Rather than use the
* reset_shell_mode() and reset_prog_mode() functions, we could invoke endwin()
* and refresh(), but that does not work any better.
*/
static int
new_command(char *buffer, int length, attr_t underline)
{
int code;
attron(A_BOLD);
printw("Command: ");
attron(underline);
code = getnstr(buffer, length);
attroff(underline);
attroff(A_BOLD);
printw("\n");
return code;
}
int
main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
{
char buffer[80];
attr_t underline;
filter();
(void) newterm((char *) 0, stdout, stdin);
cbreak();
keypad(stdscr, TRUE);
if (has_colors()) {
int background = COLOR_BLACK;
start_color();
#if HAVE_USE_DEFAULT_COLORS
if (use_default_colors() != ERR)
background = -1;
#endif
init_pair(1, COLOR_CYAN, background);
underline = COLOR_PAIR(1);
} else {
underline = A_UNDERLINE;
}
while (new_command(buffer, sizeof(buffer) - 1, underline) != ERR
&& strlen(buffer) != 0) {
reset_shell_mode();
printf("\n");
fflush(stdout);
system(buffer);
reset_prog_mode();
touchwin(stdscr);
erase();
refresh();
}
printw("done");
refresh();
endwin();
ExitProgram(EXIT_SUCCESS);
}