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#include <u.h>
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#include <libc.h>
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char	output[4096];
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void	add(char*, ...);
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void	error(char*);
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void	notifyf(void*, char*);
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void
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main(int argc, char *argv[])
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{
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	int i;
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	Waitmsg *w;
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	long l;
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	char *p;
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	char err[ERRMAX];
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	if(argc <= 1){
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		fprint(2, "usage: time command\n");
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		exits("usage");
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	}
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	switch(fork()){
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	case -1:
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		error("fork");
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	case 0:
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		exec(argv[1], &argv[1]);
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		if(argv[1][0] != '/' && strncmp(argv[1], "./", 2) &&
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		   strncmp(argv[1], "../", 3)){
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			sprint(output, "/bin/%s", argv[1]);
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			exec(output, &argv[1]);
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		}
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		error(argv[1]);
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	}
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	notify(notifyf);
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    loop:
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	w = wait();
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	if(w == nil){
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		errstr(err, sizeof err);
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		if(strcmp(err, "interrupted") == 0)
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			goto loop;
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		error("wait");
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	}
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	l = w->time[0];
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	add("%ld.%.2ldu", l/1000, (l%1000)/10);
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	l = w->time[1];
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	add("%ld.%.2lds", l/1000, (l%1000)/10);
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	l = w->time[2];
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	add("%ld.%.2ldr", l/1000, (l%1000)/10);
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	add("\t");
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	for(i=1; i<argc; i++){
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		add("%s", argv[i], 0);
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		if(i>4){
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			add("...");
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			break;
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		}
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	}
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	if(w->msg[0]){
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		p = utfrune(w->msg, ':');
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		if(p && p[1])
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			p++;
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		else
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			p = w->msg;
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		add(" # status=%s", p);
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	}
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	fprint(2, "%s\n", output);
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	exits(w->msg);
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}
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void
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add(char *a, ...)
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{
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	static beenhere=0;
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	va_list arg;
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	if(beenhere)
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		strcat(output, " ");
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	va_start(arg, a);
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	vseprint(output+strlen(output), output+sizeof(output), a, arg);
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	va_end(arg);
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	beenhere++;
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}
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void
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error(char *s)
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{
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	fprint(2, "time: %s: %r\n", s);
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	exits(s);
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}
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void
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notifyf(void *a, char *s)
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{
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	USED(a);
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	if(strcmp(s, "interrupt") == 0)
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		noted(NCONT);
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	noted(NDFLT);
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}