View Javadoc
1   /*
2    * Copyright (C) 2011, Google Inc. and others
3    *
4    * This program and the accompanying materials are made available under the
5    * terms of the Eclipse Distribution License v. 1.0 which is available at
6    * https://www.eclipse.org/org/documents/edl-v10.php.
7    *
8    * SPDX-License-Identifier: BSD-3-Clause
9    */
10  
11  package org.eclipse.jgit.internal.storage.file;
12  
13  import java.io.File;
14  import java.io.FileNotFoundException;
15  import java.io.IOException;
16  import java.util.List;
17  
18  import org.eclipse.jgit.internal.storage.pack.CachedPack;
19  import org.eclipse.jgit.internal.storage.pack.ObjectToPack;
20  import org.eclipse.jgit.internal.storage.pack.PackOutputStream;
21  import org.eclipse.jgit.internal.storage.pack.StoredObjectRepresentation;
22  
23  class LocalCachedPack extends CachedPack {
24  	private final ObjectDirectory odb;
25  
26  	private final String[] packNames;
27  
28  	private PackFile[] packs;
29  
30  	LocalCachedPack(ObjectDirectory odb, List<String> packNames) {
31  		this.odb = odb;
32  		this.packNames = packNames.toArray(new String[0]);
33  	}
34  
35  	LocalCachedPack(List<PackFile> packs) {
36  		odb = null;
37  		packNames = null;
38  		this.packs = packs.toArray(new PackFile[0]);
39  	}
40  
41  	/** {@inheritDoc} */
42  	@Override
43  	public long getObjectCount() throws IOException {
44  		long cnt = 0;
45  		for (PackFile pack : getPacks())
46  			cnt += pack.getObjectCount();
47  		return cnt;
48  	}
49  
50  	void copyAsIs(PackOutputStream out, WindowCursor wc)
51  			throws IOException {
52  		for (PackFile pack : getPacks())
53  			pack.copyPackAsIs(out, wc);
54  	}
55  
56  	/** {@inheritDoc} */
57  	@Override
58  	public boolean hasObject(ObjectToPack obj, StoredObjectRepresentation rep) {
59  		try {
60  			LocalObjectRepresentation local = (LocalObjectRepresentation) rep;
61  			for (PackFile pack : getPacks()) {
62  				if (local.pack == pack)
63  					return true;
64  			}
65  			return false;
66  		} catch (FileNotFoundException packGone) {
67  			return false;
68  		}
69  	}
70  
71  	private PackFile[] getPacks() throws FileNotFoundException {
72  		if (packs == null) {
73  			PackFile[] p = new PackFile[packNames.length];
74  			for (int i = 0; i < packNames.length; i++)
75  				p[i] = getPackFile(packNames[i]);
76  			packs = p;
77  		}
78  		return packs;
79  	}
80  
81  	private PackFile getPackFile(String packName) throws FileNotFoundException {
82  		for (PackFile pack : odb.getPacks()) {
83  			if (packName.equals(pack.getPackName()))
84  				return pack;
85  		}
86  		throw new FileNotFoundException(getPackFilePath(packName));
87  	}
88  
89  	private String getPackFilePath(String packName) {
90  		final File packDir = odb.getPackDirectory();
91  		return new File(packDir, "pack-" + packName + ".pack").getPath(); //$NON-NLS-1$ //$NON-NLS-2$
92  	}
93  }