/*	$OpenBSD: checkout.c,v 1.13 2005/02/22 22:12:00 jfb Exp $	*/
/*
 * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/types.h>

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sysexits.h>

#include "cvs.h"
#include "log.h"
#include "file.h"
#include "proto.h"


#define CVS_LISTMOD    1
#define CVS_STATMOD    2


/*
 * cvs_checkout()
 *
 * Handler for the `cvs checkout' command.
 * Returns 0 on success, or one of the known system exit codes on failure.
 */
int
cvs_checkout(int argc, char **argv)
{
	int i, ch, statmod, kflag;
	char *date, *rev, *koptstr, *tgtdir, *rcsid;
	struct cvsroot *root;

	statmod = 0;
	rcsid = NULL;
	tgtdir = NULL;
	kflag = RCS_KWEXP_DEFAULT;

	while ((ch = getopt(argc, argv, "AcD:d:fj:k:lNnPRr:st:")) != -1) {
		switch (ch) {
		case 'A':
			break;
		case 'c':
			statmod = CVS_LISTMOD;
			break;
		case 'D':
			date = optarg;
			break;
		case 'd':
			tgtdir = optarg;
			break;
		case 'f':
			break;
		case 'j':
			break;
		case 'k':
			koptstr = optarg;
			kflag = rcs_kflag_get(koptstr);
			if (RCS_KWEXP_INVAL(kflag)) {
				cvs_log(LP_ERR,
				    "invalid RCS keyword expansion mode");
				rcs_kflag_usage();
				return (EX_USAGE);
			}
			break;
		case 'r':
			rev = optarg;
			break;
		case 's':
			statmod = CVS_STATMOD;
			break;
		case 't':
			rcsid = optarg;
			break;
		default:
			return (EX_USAGE);
		}
	}

	argc -= optind;
	argv += optind;

	if (!statmod && (argc == 0)) {
		cvs_log(LP_ERR,
		    "must specify at least one module or directory");
		return (EX_USAGE);
	}

	if (statmod && (argc > 0)) {
		cvs_log(LP_ERR,  "-c and -s must not get any arguments");
		return (EX_USAGE);
	}

	if ((cvs_files = cvs_file_get(".", 0)) == NULL)
		return (EX_USAGE);

	root = CVS_DIR_ROOT(cvs_files);
	if (root == NULL) {
		cvs_log(LP_ERR,
		    "No CVSROOT specified!  Please use the `-d' option");
		cvs_log(LP_ERR,
		    "or set the CVSROOT environment variable.");
		return (EX_USAGE);
	}
	if (root->cr_method != CVS_METHOD_LOCAL) {
		if (cvs_connect(root) < 0)
			return (EX_DATAERR);

		/* first send the expand modules command */
		for (i = 0; i < argc; i++)
			if (cvs_sendarg(root, argv[i], 0) < 0)
				break;

		if (cvs_senddir(root, cvs_files) < 0)
			return (EX_PROTOCOL);
		if (cvs_sendreq(root, CVS_REQ_XPANDMOD, NULL) < 0)
			cvs_log(LP_ERR, "failed to expand module");

		/* XXX not too sure why we have to send this arg */
		if (cvs_sendarg(root, "-N", 0) < 0)
			return (EX_PROTOCOL);

		if ((statmod == CVS_LISTMOD) &&
		    (cvs_sendarg(root, "-c", 0) < 0))
			return (EX_PROTOCOL);

		if ((statmod == CVS_STATMOD) &&
		    (cvs_sendarg(root, "-s", 0) < 0))
			return (EX_PROTOCOL);

		for (i = 0; i < argc; i++)
			if (cvs_sendarg(root, argv[i], 0) < 0)
				return (EX_PROTOCOL);

		if ((cvs_senddir(root, cvs_files) < 0) ||
		    (cvs_sendreq(root, CVS_REQ_CO, NULL) < 0)) {
			cvs_log(LP_ERR, "failed to checkout");
			return (EX_PROTOCOL);
		}
	}

	return (0);
}