/*******************************************************************************
* Copyright (c) 2014 Konrad Kügler
* 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.
*
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* 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
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package org.eclipse.jgit.merge;
import java.io.IOException;
import org.eclipse.jgit.api.MergeCommand.FastForwardMode;
import org.eclipse.jgit.lib.Config;
import org.eclipse.jgit.lib.ConfigConstants;
import org.eclipse.jgit.lib.Config.SectionParser;
import org.eclipse.jgit.lib.Repository;
/**
* Holds configuration for merging into a given branch
*
* @since 3.3
*/
public class MergeConfig {
/**
* @param repo
* @return merge configuration for the current branch of the repository
*/
public static MergeConfig getConfigForCurrentBranch(Repository repo) {
try {
String branch = repo.getBranch();
if (branch != null)
return repo.getConfig().get(getParser(branch));
} catch (IOException e) {
// ignore
}
// use defaults if branch can't be determined
return new MergeConfig();
}
/**
* @param branch
* short branch name to get the configuration for, as returned
* e.g. by {@link Repository#getBranch()}
* @return a parser for use with {@link Config#get(SectionParser)}
*/
public static final SectionParser<MergeConfig> getParser(
final String branch) {
return new MergeConfigSectionParser(branch);
}
private final FastForwardMode fastForwardMode;
private final boolean squash;
private final boolean commit;
private MergeConfig(String branch, Config config) {
String[] mergeOptions = getMergeOptions(branch, config);
fastForwardMode = getFastForwardMode(config, mergeOptions);
squash = isMergeConfigOptionSet("--squash", mergeOptions); //$NON-NLS-1$
commit = !isMergeConfigOptionSet("--no-commit", mergeOptions); //$NON-NLS-1$
}
private MergeConfig() {
fastForwardMode = FastForwardMode.FF;
squash = false;
commit = true;
}
/**
* @return the fast forward mode configured for this branch
*/
public FastForwardMode getFastForwardMode() {
return fastForwardMode;
}
/**
* @return true if merges into this branch are configured to be squash
* merges, false otherwise
*/
public boolean isSquash() {
return squash;
}
/**
* @return false if --no-commit is configured for this branch, true
* otherwise (event if --squash is configured)
*/
public boolean isCommit() {
return commit;
}
private static FastForwardMode getFastForwardMode(Config config,
String[] mergeOptions) {
for (String option : mergeOptions) {
for (FastForwardMode mode : FastForwardMode.values())
if (mode.matchConfigValue(option))
return mode;
}
FastForwardMode ffmode = FastForwardMode.valueOf(config.getEnum(
ConfigConstants.CONFIG_KEY_MERGE, null,
ConfigConstants.CONFIG_KEY_FF, FastForwardMode.Merge.TRUE));
return ffmode;
}
private static boolean isMergeConfigOptionSet(String optionToLookFor,
String[] mergeOptions) {
for (String option : mergeOptions) {
if (optionToLookFor.equals(option))
return true;
}
return false;
}
private static String[] getMergeOptions(String branch, Config config) {
String mergeOptions = config.getString(
ConfigConstants.CONFIG_BRANCH_SECTION, branch,
ConfigConstants.CONFIG_KEY_MERGEOPTIONS);
if (mergeOptions != null)
return mergeOptions.split("\\s"); //$NON-NLS-1$
else
return new String[0];
}
private static class MergeConfigSectionParser implements
SectionParser<MergeConfig> {
private final String branch;
public MergeConfigSectionParser(String branch) {
this.branch = branch;
}
public MergeConfig parse(Config cfg) {
return new MergeConfig(branch, cfg);
}
@Override
public boolean equals(Object obj) {
if (obj instanceof MergeConfigSectionParser)
return branch.equals(((MergeConfigSectionParser) obj).branch);
else
return false;
}
@Override
public int hashCode() {
return branch.hashCode();
}
}
}