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/*
* Copyright (C) 2016, Christian Halstrick <christian.halstrick@sap.com> 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.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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