/*
* Copyright (C) 2009, JetBrains s.r.o.
*
* 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 Git Development Community 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.spearce.jgit.lib;
import java.io.FileNotFoundException;
import java.io.IOException;
import org.spearce.jgit.errors.ConfigInvalidException;
import org.spearce.jgit.treewalk.TreeWalk;
import org.spearce.jgit.util.RawParseUtils;
/**
* The configuration file based on the blobs stored in the repository
*/
public class BlobBasedConfig extends Config {
/**
* The constructor from a byte array
*
* @param base
* the base configuration file
* @param blob
* the byte array, should be UTF-8 encoded text.
* @throws ConfigInvalidException
* the byte array is not a valid configuration format.
*/
public BlobBasedConfig(Config base, final byte[] blob)
throws ConfigInvalidException {
super(base);
fromText(RawParseUtils.decode(blob));
}
/**
* The constructor from object identifier
*
* @param base
* the base configuration file
* @param r
* the repository
* @param objectId
* the object identifier
* @throws IOException
* the blob cannot be read from the repository.
* @throws ConfigInvalidException
* the blob is not a valid configuration format.
*/
public BlobBasedConfig(Config base, final Repository r,
final ObjectId objectId) throws IOException, ConfigInvalidException {
super(base);
final ObjectLoader loader = r.openBlob(objectId);
if (loader == null)
throw new IOException("Blob not found: " + objectId);
fromText(RawParseUtils.decode(loader.getBytes()));
}
/**
* The constructor from commit and path
*
* @param base
* the base configuration file
* @param commit
* the commit that contains the object
* @param path
* the path within the tree of the commit
* @throws FileNotFoundException
* the path does not exist in the commit's tree.
* @throws IOException
* the tree and/or blob cannot be accessed.
* @throws ConfigInvalidException
* the blob is not a valid configuration format.
*/
public BlobBasedConfig(Config base, final Commit commit, final String path)
throws FileNotFoundException, IOException, ConfigInvalidException {
super(base);
final ObjectId treeId = commit.getTreeId();
final Repository r = commit.getRepository();
final TreeWalk tree = TreeWalk.forPath(r, path, treeId);
if (tree == null)
throw new FileNotFoundException("Entry not found by path: " + path);
final ObjectId blobId = tree.getObjectId(0);
final ObjectLoader loader = tree.getRepository().openBlob(blobId);
if (loader == null)
throw new IOException("Blob not found: " + blobId + " for path: "
+ path);
fromText(RawParseUtils.decode(loader.getBytes()));
}
}