view toys/help.c @ 139:fb0745eec453

Add "help" command. (Building help/help.h requires python, but I'll ship that file with release versions.)
author Rob Landley <rob@landley.net>
date Wed, 29 Aug 2007 08:10:01 -0500
parents
children 1fbc50374a30
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/* vi: set sw=4 ts=4: */
/*
 * help.c - Show help for toybox
 */

#include "toys.h"
#include "toys/help.h"

#undef NEWTOY
#undef OLDTOY
#define NEWTOY(name,opt,flags) help_##name "\0"
#define OLDTOY(name,oldname,opts,flags) "\xff" #oldname "\0"
static char *help_data =
#include "toys/toylist.h"
;

int help_main(void)
{
	struct toy_list *t = toy_find(*toys.optargs);
	int i = t-toy_list;
	char *s = help_data;

	if (!t) error_exit("Unknown command '%s'\n", *toys.optargs);
	for (;;) {
		while (i--) s += strlen(s) + 1;
		if (*s != 255) break;
		i = toy_find(++s)-toy_list;
		s = help_data;
	}

	printf("%s", s);
	return 0;
}