/*
 * Copyright (C) 2008, Mike Ralphson <mike@abacus.co.uk>
 * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
 * and other copyright owners as documented in the project's IP log.
 *
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Distribution License v1.0 which
 * accompanies this distribution, is reproduced below, and is
 * available at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials provided
 *   with the distribution.
 *
 * - Neither the name of the Eclipse Foundation, Inc. nor the
 *   names of its contributors may be used to endorse or promote
 *   products derived from this software without specific prior
 *   written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "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 COPYRIGHT OWNER OR
 * CONTRIBUTORS 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.
 */

package org.eclipse.jgit.transport;

import java.text.MessageFormat;

import org.eclipse.jgit.internal.JGitText;

Specification of annotated tag behavior during fetch.
/**
 * Specification of annotated tag behavior during fetch.
 */
public enum TagOpt {
	
Automatically follow tags if we fetch the thing they point at.

This is the default behavior and tries to balance the benefit of having
an annotated tag against the cost of possibly objects that are only on
branches we care nothing about. Annotated tags are fetched only if we can
prove that we already have (or will have when the fetch completes) the
object the annotated tag peels (dereferences) to.
/**
	 * Automatically follow tags if we fetch the thing they point at.
	 * <p>
	 * This is the default behavior and tries to balance the benefit of having
	 * an annotated tag against the cost of possibly objects that are only on
	 * branches we care nothing about. Annotated tags are fetched only if we can
	 * prove that we already have (or will have when the fetch completes) the
	 * object the annotated tag peels (dereferences) to.
	 */
	AUTO_FOLLOW(""), //$NON-NLS-1$

	
Never fetch tags, even if we have the thing it points at.

This option must be requested by the user and always avoids fetching
annotated tags. It is most useful if the location you are fetching from
publishes annotated tags, but you are not interested in the tags and only
want their branches.
/**
	 * Never fetch tags, even if we have the thing it points at.
	 * <p>
	 * This option must be requested by the user and always avoids fetching
	 * annotated tags. It is most useful if the location you are fetching from
	 * publishes annotated tags, but you are not interested in the tags and only
	 * want their branches.
	 */
	NO_TAGS("--no-tags"), //$NON-NLS-1$

	
Always fetch tags, even if we do not have the thing it points at.
 Unlike AUTO_FOLLOW the tag is always obtained. This may cause hundreds of megabytes of objects to be fetched if the receiving repository does not yet have the necessary dependencies. /**
	 * Always fetch tags, even if we do not have the thing it points at.
	 * <p>
	 * Unlike {@link #AUTO_FOLLOW} the tag is always obtained. This may cause
	 * hundreds of megabytes of objects to be fetched if the receiving
	 * repository does not yet have the necessary dependencies.
	 */
	FETCH_TAGS("--tags"); //$NON-NLS-1$

	private final String option;

	private TagOpt(String o) {
		option = o;
	}

	
Get the command line/configuration file text for this value.
Returns:
text that appears in the configuration file to activate this./**
	 * Get the command line/configuration file text for this value.
	 *
	 * @return text that appears in the configuration file to activate this.
	 */
	public String option() {
		return option;
	}

	
Convert a command line/configuration file text into a value instance.
Params:
o – 
           the configuration file text value.
Returns:
the option that matches the passed parameter./**
	 * Convert a command line/configuration file text into a value instance.
	 *
	 * @param o
	 *            the configuration file text value.
	 * @return the option that matches the passed parameter.
	 */
	public static TagOpt fromOption(String o) {
		if (o == null || o.length() == 0)
			return AUTO_FOLLOW;
		for (TagOpt tagopt : values()) {
			if (tagopt.option().equals(o))
				return tagopt;
		}
		throw new IllegalArgumentException(MessageFormat.format(JGitText.get().invalidTagOption, o));
	}
}