OS X text status-item

foobar.m

#include <AppKit/AppKit.h>
#include <stdio.h>
#include <signal.h>

static void
handler(int sig __attribute((unused)))
{
	close(STDIN_FILENO);
}

int
main()
{
	char *line = NULL;
	size_t size = 0;

	[NSApplication sharedApplication];
	NSStatusBar *bar = [NSStatusBar systemStatusBar];
	NSStatusItem *item = [bar statusItemWithLength:NSVariableStatusItemLength];

	signal(SIGINT, handler);
	signal(SIGQUIT, handler);
	signal(SIGABRT, handler);

	while (getline(&line, &size, stdin) != -1)
		[item setTitle:[NSString stringWithUTF8String:line]];

	[bar removeStatusItem:item];

	return 0;
}