/*
* Copyright (C) 2011, Robin Stocker <robin@nibor.org>
* Copyright (C) 2012, Matthias Sohn <matthias.sohn@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.lib;
import java.net.URISyntaxException;
import org.eclipse.jgit.transport.RefSpec;
import org.eclipse.jgit.transport.RemoteConfig;
/**
* Branch section of a Git configuration file.
*/
public class BranchConfig {
/**
* The value that means "local repository" for {@link #getRemote()}:
* {@value}
*
* @since 3.5
*/
public static final String LOCAL_REPOSITORY = "."; //$NON-NLS-1$
private final Config config;
private final String branchName;
/**
* Create a new branch config, which will read configuration from config
* about specified branch.
*
* @param config
* the config to read from
* @param branchName
* the short branch name of the section to read
*/
public BranchConfig(final Config config, String branchName) {
this.config = config;
this.branchName = branchName;
}
/**
* @return the full tracking branch name or <code>null</code> if it could
* not be determined
*/
public String getTrackingBranch() {
String remote = getRemoteOrDefault();
String mergeRef = getMerge();
if (remote == null || mergeRef == null)
return null;
if (isRemoteLocal())
return mergeRef;
return findRemoteTrackingBranch(remote, mergeRef);
}
/**
* @return the full remote-tracking branch name or {@code null} if it could
* not be determined. If you also want local tracked branches use
* {@link #getTrackingBranch()} instead.
*/
public String getRemoteTrackingBranch() {
String remote = getRemoteOrDefault();
String mergeRef = getMerge();
if (remote == null || mergeRef == null)
return null;
return findRemoteTrackingBranch(remote, mergeRef);
}
/**
* @return {@code true} if the "remote" setting points to the local
* repository (with {@value #LOCAL_REPOSITORY}), false otherwise
* @since 3.5
*/
public boolean isRemoteLocal() {
return LOCAL_REPOSITORY.equals(getRemote());
}
/**
* @return the remote this branch is configured to fetch from/push to, or
* {@code null} if not defined
* @since 3.5
*/
public String getRemote() {
return config.getString(ConfigConstants.CONFIG_BRANCH_SECTION,
branchName, ConfigConstants.CONFIG_KEY_REMOTE);
}
/**
* @return the name of the upstream branch as it is called on the remote, or
* {@code null} if not defined
* @since 3.5
*/
public String getMerge() {
return config.getString(ConfigConstants.CONFIG_BRANCH_SECTION,
branchName, ConfigConstants.CONFIG_KEY_MERGE);
}
/**
* @return {@code true} if the branch is configured to be rebased
* @since 3.5
*/
public boolean isRebase() {
return config.getBoolean(ConfigConstants.CONFIG_BRANCH_SECTION,
branchName, ConfigConstants.CONFIG_KEY_REBASE, false);
}
/**
* Finds the tracked remote tracking branch
*
* @param remote
* Remote name
* @param mergeRef
* merge Ref of the local branch tracking the remote tracking
* branch
* @return full remote tracking branch name or null
*/
private String findRemoteTrackingBranch(String remote, String mergeRef) {
RemoteConfig remoteConfig;
try {
remoteConfig = new RemoteConfig(config, remote);
} catch (URISyntaxException e) {
return null;
}
for (RefSpec refSpec : remoteConfig.getFetchRefSpecs()) {
if (refSpec.matchSource(mergeRef)) {
RefSpec expanded = refSpec.expandFromSource(mergeRef);
return expanded.getDestination();
}
}
return null;
}
private String getRemoteOrDefault() {
String remote = getRemote();
if (remote == null)
return Constants.DEFAULT_REMOTE_NAME;
else
return remote;
}
}