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/*
* Copyright (C) 2010, Google Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
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 = DiffConfig::new;
/** Permissible values for {@code diff.renames}. */
public 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(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, 400);
}
/**
* If prefix should be suppressed
*
* @return true if the prefix "a/" and "b/" should be suppressed
*/
public boolean isNoPrefix() {
return noPrefix;
}
/**
* If rename detection is enabled
*
* @return true if rename detection is enabled by default
*/
public boolean isRenameDetectionEnabled() {
return renameDetectionType != RenameDetectionType.FALSE;
}
/**
* Get the rename detection type
*
* @return type of rename detection to perform
*/
public RenameDetectionType getRenameDetectionType() {
return renameDetectionType;
}
/**
* Get the rename limit
*
* @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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