/* ************************************************************************** */
/*                                       _____           _                    */
/*  args.c                              |_   _|__  _   _| |__   ___ _   _     */
/*  | Project: p7test                     | |/ _ \| | | | '_ \ / _ \ | | |    */
/*                                        | | (_) | |_| | | | |  __/ |_| |    */
/*  By: thomas <thomas@touhey.fr>         |_|\___/ \__,_|_| |_|\___|\__, |.fr */
/*  Last updated: 2017/01/13 00:52:20                               |___/     */
/*                                                                            */
/* ************************************************************************** */
#include "main.h"
#include <getopt.h>
#define Q(x) #x
#define QUOTE(x) Q(x)

/* ************************************************************************** */
/*  Help and version messages                                                 */
/* ************************************************************************** */
/* Version message */
static const char version_message[] =
QUOTE(BIN) " - from " QUOTE(NAME) " v" QUOTE(VERSION)
	" (licensed under GPLv2)\n"
"Maintained by " QUOTE(MAINTAINER) ".\n"
"\n"
"This is free software; see the source for copying conditions.\n"
"There is NO warranty; not even for MERCHANTABILITY or\n"
"FITNESS FOR A PARTICULAR PURPOSE.";

/* Main help message */
static const char help_main[] =
"Usage: " QUOTE(BIN) " [--help] [--version]\n"
"\n"
"This utility is only there to test the libp7 server feature.\n"
"It should not be used in production for anything else.\n"
"\n"
"General options:\n"
"  -h, --help        Display the help page of the (sub)command and quit.\n"
"  -v, --version     Display the version message and quit.\n"
"\n"
"Report bugs to " QUOTE(MAINTAINER) ".";

/* ************************************************************************** */
/*  Main args parsing function                                                */
/* ************************************************************************** */
/**
 *	parse_args:
 *	Args parsing main function.
 *
 *	@arg	ac		the arguments count.
 *	@arg	av		the arguments values.
 *	@return			if execution should stop after this call.
 */

int parse_args(int ac, char **av)
{
	/* define options */
	const char shopts[] = "hv";
	const struct option longopts[] = {
		{"help", no_argument, NULL, 'h'},
		{"version", no_argument, NULL, 'v'},
		{NULL, 0, NULL, 0}
	};

	/* get all options */
	int c; opterr = 0;
	int help = 0, version = 0;
	while ((c = getopt_long(ac, av, shopts, longopts, NULL)) >= 0) switch (c) {
		case 'h': help = 1; break;
		case 'v': version = 1; break;

		case '?': break;
	}

	/* get parameters */
	int pc = ac - optind;
	if (pc) help = 1;

	/* print help or version */
	if (help) {
		puts(help_main);
		return (1);
	} else if (version) {
		puts(version_message);
		return (1);
	}

	/* no problem */
	return (0);
}