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/*
* Copyright (C) 2010, Google Inc.
* 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.diff;
import java.text.MessageFormat;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.lib.Config;
import org.eclipse.jgit.lib.Config.SectionParser;
import org.eclipse.jgit.lib.ConfigConstants;
import org.eclipse.jgit.util.StringUtils;
/** Keeps track of diff related configuration options. */
public class DiffConfig {
/** Key for {@link Config#get(SectionParser)}. */
public static final Config.SectionParser<DiffConfig> KEY = new SectionParser<DiffConfig>() {
public DiffConfig parse(final Config cfg) {
return new DiffConfig(cfg);
}
};
/** Permissible values for {@code diff.renames}. */
public static enum RenameDetectionType {
/** Rename detection is disabled. */
FALSE,
/** Rename detection is enabled. */
TRUE,
/** Copies should be detected too. */
COPY
}
private final boolean noPrefix;
private final RenameDetectionType renameDetectionType;
private final int renameLimit;
private DiffConfig(final Config rc) {
noPrefix = rc.getBoolean(ConfigConstants.CONFIG_DIFF_SECTION,
ConfigConstants.CONFIG_KEY_NOPREFIX, false);
renameDetectionType = parseRenameDetectionType(rc.getString(
ConfigConstants.CONFIG_DIFF_SECTION, null, ConfigConstants.CONFIG_KEY_RENAMES));
renameLimit = rc.getInt(ConfigConstants.CONFIG_DIFF_SECTION,
ConfigConstants.CONFIG_KEY_RENAMELIMIT, 200);
}
/** @return true if the prefix "a/" and "b/" should be suppressed. */
public boolean isNoPrefix() {
return noPrefix;
}
/** @return true if rename detection is enabled by default. */
public boolean isRenameDetectionEnabled() {
return renameDetectionType != RenameDetectionType.FALSE;
}
/** @return type of rename detection to perform. */
public RenameDetectionType getRenameDetectionType() {
return renameDetectionType;
}
/** @return limit on number of paths to perform inexact rename detection. */
public int getRenameLimit() {
return renameLimit;
}
private static RenameDetectionType parseRenameDetectionType(
final String renameString) {
if (renameString == null)
return RenameDetectionType.FALSE;
else if (StringUtils.equalsIgnoreCase(
ConfigConstants.CONFIG_RENAMELIMIT_COPY, renameString)
|| StringUtils
.equalsIgnoreCase(
ConfigConstants.CONFIG_RENAMELIMIT_COPIES,
renameString))
return RenameDetectionType.COPY;
else {
final Boolean renameBoolean = StringUtils
.toBooleanOrNull(renameString);
if (renameBoolean == null)
throw new IllegalArgumentException(MessageFormat.format(
JGitText.get().enumValueNotSupported2,
ConfigConstants.CONFIG_DIFF_SECTION,
ConfigConstants.CONFIG_KEY_RENAMES, renameString));
else if (renameBoolean.booleanValue())
return RenameDetectionType.TRUE;
else
return RenameDetectionType.FALSE;
}
}
}
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