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/*
* Copyright (C) 2016, Christian Halstrick <christian.halstrick@sap.com>
* 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.lfs;
import static org.eclipse.jgit.lib.Constants.OBJECTS;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import org.eclipse.jgit.lfs.lib.AnyLongObjectId;
import org.eclipse.jgit.lfs.lib.Constants;
import org.eclipse.jgit.lib.Repository;
/**
* Class which represents the lfs folder hierarchy inside a {@code .git} folder
*
* @since 4.6
*/
public class Lfs {
private Path root;
private Path objDir;
private Path tmpDir;
/**
* Constructor for Lfs.
*
* @param db
* the associated repo
*
* @since 4.11
*/
public Lfs(Repository db) {
this.root = db.getDirectory().toPath().resolve(Constants.LFS);
}
/**
* Get the LFS root directory
*
* @return the path to the LFS directory
*/
public Path getLfsRoot() {
return root;
}
/**
* Get the path to the temporary directory used by LFS.
*
* @return the path to the temporary directory used by LFS. Will be
* {@code <repo>/.git/lfs/tmp}
*/
public Path getLfsTmpDir() {
if (tmpDir == null) {
tmpDir = root.resolve("tmp"); //$NON-NLS-1$
}
return tmpDir;
}
/**
* Get the object directory used by LFS
*
* @return the path to the object directory used by LFS. Will be
* {@code <repo>/.git/lfs/objects}
*/
public Path getLfsObjDir() {
if (objDir == null) {
objDir = root.resolve(OBJECTS);
}
return objDir;
}
/**
* Get the media file which stores the original content
*
* @param id
* the id of the mediafile
* @return the file which stores the original content. Its path will look
* like
* {@code "<repo>/.git/lfs/objects/<firstTwoLettersOfID>/<remainingLettersOfID>"}
*/
public Path getMediaFile(AnyLongObjectId id) {
String idStr = id.name();
return getLfsObjDir().resolve(idStr.substring(0, 2))
.resolve(idStr.substring(2, 4)).resolve(idStr);
}
/**
* Create a new temp file in the LFS directory
*
* @return a new temporary file in the LFS directory
* @throws java.io.IOException
* when the temp file could not be created
*/
public Path createTmpFile() throws IOException {
return Files.createTempFile(getLfsTmpDir(), null, null);
}
}
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