/*
 * Copyright (C) 2010, Google Inc. and others
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0 which is available at
 * https://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package org.eclipse.jgit.storage.file;

import java.io.File;
import java.io.IOException;

import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.internal.storage.file.FileRepository;
import org.eclipse.jgit.lib.BaseRepositoryBuilder;
import org.eclipse.jgit.lib.Repository;

Constructs a FileRepository. 
 Applications must set one of BaseRepositoryBuilder<FileRepositoryBuilder,Repository>.setGitDir(File) or BaseRepositoryBuilder<FileRepositoryBuilder,Repository>.setWorkTree(File), or use BaseRepositoryBuilder<FileRepositoryBuilder,Repository>.readEnvironment() or BaseRepositoryBuilder<FileRepositoryBuilder,Repository>.findGitDir() in order to configure the minimum property set necessary to open a repository. 

Single repository applications trying to be compatible with other Git
implementations are encouraged to use a model such as:
new FileRepositoryBuilder() //
		.setGitDir(gitDirArgument) // --git-dir if supplied, no-op if null
		.readEnvironment() // scan environment GIT_* variables
		.findGitDir() // scan up the file system tree
		.build()

/**
 * Constructs a {@link org.eclipse.jgit.internal.storage.file.FileRepository}.
 * <p>
 * Applications must set one of {@link #setGitDir(File)} or
 * {@link #setWorkTree(File)}, or use {@link #readEnvironment()} or
 * {@link #findGitDir()} in order to configure the minimum property set
 * necessary to open a repository.
 * <p>
 * Single repository applications trying to be compatible with other Git
 * implementations are encouraged to use a model such as:
 *
 * <pre>
 * new FileRepositoryBuilder() //
 * 		.setGitDir(gitDirArgument) // --git-dir if supplied, no-op if null
 * 		.readEnvironment() // scan environment GIT_* variables
 * 		.findGitDir() // scan up the file system tree
 * 		.build()
 * </pre>
 */
public class FileRepositoryBuilder extends
		BaseRepositoryBuilder<FileRepositoryBuilder, Repository> {
	
{@inheritDoc}

Create a repository matching the configuration in this builder.

If an option was not set, the build method will try to default the option
based on other options. If insufficient information is available, an
exception is thrown to the caller.
Since:
3.0/**
	 * {@inheritDoc}
	 * <p>
	 * Create a repository matching the configuration in this builder.
	 * <p>
	 * If an option was not set, the build method will try to default the option
	 * based on other options. If insufficient information is available, an
	 * exception is thrown to the caller.
	 *
	 * @since 3.0
	 */
	@Override
	public Repository build() throws IOException {
		FileRepository repo = new FileRepository(setup());
		if (isMustExist() && !repo.getObjectDatabase().exists())
			throw new RepositoryNotFoundException(getGitDir());
		return repo;
	}

	
Convenience factory method to construct a FileRepository. 
Params:
gitDir –  GIT_DIR, the repository meta directory.
Throws:
IOException – 
            the repository could not be accessed to configure the rest of
            the builder's parameters.
Returns:
a repository matching this configuration.
Since:
3.0/**
	 * Convenience factory method to construct a
	 * {@link org.eclipse.jgit.internal.storage.file.FileRepository}.
	 *
	 * @param gitDir
	 *            {@code GIT_DIR}, the repository meta directory.
	 * @return a repository matching this configuration.
	 * @throws java.io.IOException
	 *             the repository could not be accessed to configure the rest of
	 *             the builder's parameters.
	 * @since 3.0
	 */
	public static Repository create(File gitDir) throws IOException {
		return new FileRepositoryBuilder().setGitDir(gitDir).readEnvironment()
				.build();
	}
}