RepoCommand: Add linkfile support.

Android wants them to work, and we're only interested in them for bare
repos, so add them just for that.

Make sure to use symlinks instead of just using the copyfile
implementation. Some scripts look up where they're actually located in
order to find related files, so they need the link back to their
project.

Change-Id: I929b69b2505f03036f69e25a55daf93842871f30
Signed-off-by: Dan Willemsen <dwillemsen@google.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Jeff Gaston <jeffrygaston@google.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
This commit is contained in:
Dan Willemsen 2016-11-15 15:33:53 -08:00 committed by David Pursehouse
parent fac16fe16a
commit b6fc8e2f3c
9 changed files with 397 additions and 42 deletions

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@ -0,0 +1,162 @@
/*
* Copyright (C) 2016, 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.gitrepo;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.File;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.junit.JGitTestUtil;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.util.FS;
import org.junit.Before;
import org.junit.Test;
public class RepoCommandSymlinkTest extends RepositoryTestCase {
@Before
public void beforeMethod() {
// If this assumption fails the tests are skipped. When running on a
// filesystem not supporting symlinks I don't want this tests
org.junit.Assume.assumeTrue(FS.DETECTED.supportsSymlinks());
}
private Repository defaultDb;
private String rootUri;
private String defaultUri;
@Override
public void setUp() throws Exception {
super.setUp();
defaultDb = createWorkRepository();
try (Git git = new Git(defaultDb)) {
JGitTestUtil.writeTrashFile(defaultDb, "hello.txt", "hello world");
git.add().addFilepattern("hello.txt").call();
git.commit().setMessage("Initial commit").call();
addRepoToClose(defaultDb);
}
defaultUri = defaultDb.getDirectory().toURI().toString();
int root = defaultUri.lastIndexOf("/",
defaultUri.lastIndexOf("/.git") - 1)
+ 1;
rootUri = defaultUri.substring(0, root)
+ "manifest";
defaultUri = defaultUri.substring(root);
}
@Test
public void testLinkFileBare() throws Exception {
try (
Repository remoteDb = createBareRepository();
Repository tempDb = createWorkRepository()) {
StringBuilder xmlContent = new StringBuilder();
xmlContent
.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n")
.append("<manifest>")
.append("<remote name=\"remote1\" fetch=\".\" />")
.append("<default revision=\"master\" remote=\"remote1\" />")
.append("<project path=\"foo\" name=\"").append(defaultUri)
.append("\" revision=\"master\" >")
.append("<linkfile src=\"hello.txt\" dest=\"LinkedHello\" />")
.append("<linkfile src=\"hello.txt\" dest=\"foo/LinkedHello\" />")
.append("<linkfile src=\"hello.txt\" dest=\"subdir/LinkedHello\" />")
.append("</project>")
.append("<project path=\"bar/baz\" name=\"")
.append(defaultUri).append("\" revision=\"master\" >")
.append("<linkfile src=\"hello.txt\" dest=\"bar/foo/LinkedHello\" />")
.append("</project>").append("</manifest>");
JGitTestUtil.writeTrashFile(tempDb, "manifest.xml",
xmlContent.toString());
RepoCommand command = new RepoCommand(remoteDb);
command.setPath(
tempDb.getWorkTree().getAbsolutePath() + "/manifest.xml")
.setURI(rootUri).call();
// Clone it
File directory = createTempDirectory("testCopyFileBare");
Repository localDb = Git.cloneRepository().setDirectory(directory)
.setURI(remoteDb.getDirectory().toURI().toString()).call()
.getRepository();
// The LinkedHello symlink should exist.
File linkedhello = new File(localDb.getWorkTree(), "LinkedHello");
assertTrue("The LinkedHello file should exist",
localDb.getFS().exists(linkedhello));
assertTrue("The LinkedHello file should be a symlink",
localDb.getFS().isSymLink(linkedhello));
assertEquals("foo/hello.txt",
localDb.getFS().readSymLink(linkedhello));
// The foo/LinkedHello file should be skipped.
File linkedfoohello = new File(localDb.getWorkTree(), "foo/LinkedHello");
assertFalse("The foo/LinkedHello file should be skipped",
localDb.getFS().exists(linkedfoohello));
// The subdir/LinkedHello file should use a relative ../
File linkedsubdirhello = new File(localDb.getWorkTree(),
"subdir/LinkedHello");
assertTrue("The subdir/LinkedHello file should exist",
localDb.getFS().exists(linkedsubdirhello));
assertTrue("The subdir/LinkedHello file should be a symlink",
localDb.getFS().isSymLink(linkedsubdirhello));
assertEquals("../foo/hello.txt",
localDb.getFS().readSymLink(linkedsubdirhello));
// The bar/foo/LinkedHello file should use a single relative ../
File linkedbarfoohello = new File(localDb.getWorkTree(),
"bar/foo/LinkedHello");
assertTrue("The bar/foo/LinkedHello file should exist",
localDb.getFS().exists(linkedbarfoohello));
assertTrue("The bar/foo/LinkedHello file should be a symlink",
localDb.getFS().isSymLink(linkedbarfoohello));
assertEquals("../baz/hello.txt",
localDb.getFS().readSymLink(linkedbarfoohello));
localDb.close();
}
}
}

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@ -465,12 +465,12 @@ public void testCreateSymlinkOverrideExisting() throws IOException {
@Test
public void testRelativize_doc() {
// This is the javadoc example
// This is the example from the javadoc
String base = toOSPathString("c:\\Users\\jdoe\\eclipse\\git\\project");
String other = toOSPathString("c:\\Users\\jdoe\\eclipse\\git\\another_project\\pom.xml");
String expected = toOSPathString("..\\another_project\\pom.xml");
String actual = FileUtils.relativize(base, other);
String actual = FileUtils.relativizeNativePath(base, other);
assertEquals(expected, actual);
}
@ -483,13 +483,13 @@ public void testRelativize_mixedCase() {
String expectedCaseSensitive = toOSPathString("..\\..\\Git\\test\\d\\f.txt");
if (systemReader.isWindows()) {
String actual = FileUtils.relativize(base, other);
String actual = FileUtils.relativizeNativePath(base, other);
assertEquals(expectedCaseInsensitive, actual);
} else if (systemReader.isMacOS()) {
String actual = FileUtils.relativize(base, other);
String actual = FileUtils.relativizeNativePath(base, other);
assertEquals(expectedCaseInsensitive, actual);
} else {
String actual = FileUtils.relativize(base, other);
String actual = FileUtils.relativizeNativePath(base, other);
assertEquals(expectedCaseSensitive, actual);
}
}
@ -501,7 +501,7 @@ public void testRelativize_scheme() {
// 'file.java' is treated as a folder
String expected = toOSPathString("../../project");
String actual = FileUtils.relativize(base, other);
String actual = FileUtils.relativizeNativePath(base, other);
assertEquals(expected, actual);
}
@ -511,7 +511,7 @@ public void testRelativize_equalPaths() {
String other = toOSPathString("file:/home/eclipse/runtime-New_configuration/project_1");
String expected = "";
String actual = FileUtils.relativize(base, other);
String actual = FileUtils.relativizeNativePath(base, other);
assertEquals(expected, actual);
}
@ -521,7 +521,7 @@ public void testRelativize_whitespaces() {
String other = toOSPathString("/home/eclipse 3.4/runtime New_configuration/project_1/file");
String expected = "file";
String actual = FileUtils.relativize(base, other);
String actual = FileUtils.relativizeNativePath(base, other);
assertEquals(expected, actual);
}

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@ -431,6 +431,7 @@ noHEADExistsAndNoExplicitStartingRevisionWasSpecified=No HEAD exists and no expl
noHMACsupport=No {0} support: {1}
noMergeBase=No merge base could be determined. Reason={0}. {1}
noMergeHeadSpecified=No merge head specified
nonBareLinkFilesNotSupported=Link files are not supported with nonbare repos
noSuchRef=no such ref
notABoolean=Not a boolean: {0}
notABundle=not a bundle

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@ -60,6 +60,8 @@
import org.eclipse.jgit.annotations.NonNull;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.gitrepo.RepoProject.CopyFile;
import org.eclipse.jgit.gitrepo.RepoProject.LinkFile;
import org.eclipse.jgit.gitrepo.RepoProject.ReferenceFile;
import org.eclipse.jgit.gitrepo.internal.RepoText;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.lib.Repository;
@ -209,6 +211,15 @@ public void startElement(
currentProject.getPath(),
attributes.getValue("src"), //$NON-NLS-1$
attributes.getValue("dest"))); //$NON-NLS-1$
} else if ("linkfile".equals(qName)) { //$NON-NLS-1$
if (currentProject == null) {
throw new SAXException(RepoText.get().invalidManifest);
}
currentProject.addLinkFile(new LinkFile(
rootRepo,
currentProject.getPath(),
attributes.getValue("src"), //$NON-NLS-1$
attributes.getValue("dest"))); //$NON-NLS-1$
} else if ("include".equals(qName)) { //$NON-NLS-1$
String name = attributes.getValue("name"); //$NON-NLS-1$
if (includedReader != null) {
@ -359,19 +370,25 @@ void removeOverlaps() {
else
last = p;
}
removeNestedCopyfiles();
removeNestedCopyAndLinkfiles();
}
/** Remove copyfiles that sit in a subdirectory of any other project. */
void removeNestedCopyfiles() {
private void removeNestedCopyAndLinkfiles() {
for (RepoProject proj : filteredProjects) {
List<CopyFile> copyfiles = new ArrayList<>(proj.getCopyFiles());
proj.clearCopyFiles();
for (CopyFile copyfile : copyfiles) {
if (!isNestedCopyfile(copyfile)) {
if (!isNestedReferencefile(copyfile)) {
proj.addCopyFile(copyfile);
}
}
List<LinkFile> linkfiles = new ArrayList<>(proj.getLinkFiles());
proj.clearLinkFiles();
for (LinkFile linkfile : linkfiles) {
if (!isNestedReferencefile(linkfile)) {
proj.addLinkFile(linkfile);
}
}
}
}
@ -393,18 +410,18 @@ boolean inGroups(RepoProject proj) {
return false;
}
private boolean isNestedCopyfile(CopyFile copyfile) {
if (copyfile.dest.indexOf('/') == -1) {
// If the copyfile is at root level then it won't be nested.
private boolean isNestedReferencefile(ReferenceFile referencefile) {
if (referencefile.dest.indexOf('/') == -1) {
// If the referencefile is at root level then it won't be nested.
return false;
}
for (RepoProject proj : filteredProjects) {
if (proj.getPath().compareTo(copyfile.dest) > 0) {
if (proj.getPath().compareTo(referencefile.dest) > 0) {
// Early return as remaining projects can't be ancestor of this
// copyfile config (filteredProjects is sorted).
// referencefile config (filteredProjects is sorted).
return false;
}
if (proj.isAncestorOf(copyfile.dest)) {
if (proj.isAncestorOf(referencefile.dest)) {
return true;
}
}

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@ -49,6 +49,7 @@
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.UnsupportedOperationException;
import java.net.URI;
import java.text.MessageFormat;
import java.util.ArrayList;
@ -69,6 +70,7 @@
import org.eclipse.jgit.dircache.DirCacheEntry;
import org.eclipse.jgit.gitrepo.ManifestParser.IncludedFileReader;
import org.eclipse.jgit.gitrepo.RepoProject.CopyFile;
import org.eclipse.jgit.gitrepo.RepoProject.LinkFile;
import org.eclipse.jgit.gitrepo.internal.RepoText;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.lib.CommitBuilder;
@ -506,6 +508,7 @@ public RevCommit call() throws GitAPIException {
proj.getPath(),
proj.getRevision(),
proj.getCopyFiles(),
proj.getLinkFiles(),
proj.getGroups(),
proj.getRecommendShallow());
}
@ -593,6 +596,25 @@ public RevCommit call() throws GitAPIException {
dcEntry.setFileMode(FileMode.REGULAR_FILE);
builder.add(dcEntry);
}
for (LinkFile linkfile : proj.getLinkFiles()) {
String link;
if (linkfile.dest.contains("/")) { //$NON-NLS-1$
link = FileUtils.relativizeGitPath(
linkfile.dest.substring(0,
linkfile.dest.lastIndexOf('/')),
proj.getPath() + "/" + linkfile.src); //$NON-NLS-1$
} else {
link = proj.getPath() + "/" + linkfile.src; //$NON-NLS-1$
}
objectId = inserter.insert(Constants.OBJ_BLOB,
link.getBytes(
Constants.CHARACTER_ENCODING));
dcEntry = new DirCacheEntry(linkfile.dest);
dcEntry.setObjectId(objectId);
dcEntry.setFileMode(FileMode.SYMLINK);
builder.add(dcEntry);
}
}
String content = cfg.toText();
@ -667,13 +689,20 @@ public RevCommit call() throws GitAPIException {
}
private void addSubmodule(String url, String path, String revision,
List<CopyFile> copyfiles, Set<String> groups, String recommendShallow)
List<CopyFile> copyfiles, List<LinkFile> linkfiles,
Set<String> groups, String recommendShallow)
throws GitAPIException, IOException {
if (repo.isBare()) {
RepoProject proj = new RepoProject(url, path, revision, null, groups, recommendShallow);
proj.addCopyFiles(copyfiles);
proj.addLinkFiles(linkfiles);
bareProjects.add(proj);
} else {
if (!linkfiles.isEmpty()) {
throw new UnsupportedOperationException(
JGitText.get().nonBareLinkFilesNotSupported);
}
SubmoduleAddCommand add = git
.submoduleAdd()
.setPath(path)

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@ -70,14 +70,17 @@ public class RepoProject implements Comparable<RepoProject> {
private final String remote;
private final Set<String> groups;
private final List<CopyFile> copyfiles;
private final List<LinkFile> linkfiles;
private String recommendShallow;
private String url;
private String defaultRevision;
/**
* The representation of a copy file configuration.
* The representation of a reference file configuration.
*
* @since 4.8
*/
public static class CopyFile {
public static class ReferenceFile {
final Repository repo;
final String path;
final String src;
@ -93,12 +96,31 @@ public static class CopyFile {
* @param dest
* the destination path relative to the super project.
*/
public CopyFile(Repository repo, String path, String src, String dest) {
public ReferenceFile(Repository repo, String path, String src, String dest) {
this.repo = repo;
this.path = path;
this.src = src;
this.dest = dest;
}
}
/**
* The representation of a copy file configuration.
*/
public static class CopyFile extends ReferenceFile {
/**
* @param repo
* the super project.
* @param path
* the path of the project containing this copyfile config.
* @param src
* the source path relative to the sub repo.
* @param dest
* the destination path relative to the super project.
*/
public CopyFile(Repository repo, String path, String src, String dest) {
super(repo, path, src, dest);
}
/**
* Do the copy file action.
@ -125,6 +147,27 @@ public void copy() throws IOException {
}
}
/**
* The representation of a link file configuration.
*
* @since 4.8
*/
public static class LinkFile extends ReferenceFile {
/**
* @param repo
* the super project.
* @param path
* the path of the project containing this linkfile config.
* @param src
* the source path relative to the sub repo.
* @param dest
* the destination path relative to the super project.
*/
public LinkFile(Repository repo, String path, String src, String dest) {
super(repo, path, src, dest);
}
}
/**
* @param name
* the relative path to the {@code remote}
@ -156,6 +199,7 @@ public RepoProject(String name, String path, String revision,
this.groups = groups;
this.recommendShallow = recommendShallow;
copyfiles = new ArrayList<>();
linkfiles = new ArrayList<>();
}
/**
@ -249,6 +293,16 @@ public List<CopyFile> getCopyFiles() {
return Collections.unmodifiableList(copyfiles);
}
/**
* Getter for the linkfile configurations.
*
* @return Immutable copy of {@code linkfiles}
* @since 4.8
*/
public List<LinkFile> getLinkFiles() {
return Collections.unmodifiableList(linkfiles);
}
/**
* Get the url of the sub repo.
*
@ -335,6 +389,35 @@ public void clearCopyFiles() {
this.copyfiles.clear();
}
/**
* Add a link file configuration.
*
* @param linkfile
* @since 4.8
*/
public void addLinkFile(LinkFile linkfile) {
linkfiles.add(linkfile);
}
/**
* Add a bunch of linkfile configurations.
*
* @param linkFiles
* @since 4.8
*/
public void addLinkFiles(Collection<LinkFile> linkFiles) {
this.linkfiles.addAll(linkFiles);
}
/**
* Clear all the linkfiles.
*
* @since 4.8
*/
public void clearLinkFiles() {
this.linkfiles.clear();
}
private String getPathWithSlash() {
if (path.endsWith("/")) //$NON-NLS-1$
return path;

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@ -490,6 +490,7 @@ public static JGitText get() {
/***/ public String noHMACsupport;
/***/ public String noMergeBase;
/***/ public String noMergeHeadSpecified;
/***/ public String nonBareLinkFilesNotSupported;
/***/ public String noSuchRef;
/***/ public String notABoolean;
/***/ public String notABundle;

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@ -777,7 +777,7 @@ public void createSymLink(File path, String target) throws IOException {
}
/**
* See {@link FileUtils#relativize(String, String)}.
* See {@link FileUtils#relativizePath(String, String, String, boolean)}.
*
* @param base
* The path against which <code>other</code> should be
@ -786,11 +786,11 @@ public void createSymLink(File path, String target) throws IOException {
* The path that will be made relative to <code>base</code>.
* @return A relative path that, when resolved against <code>base</code>,
* will yield the original <code>other</code>.
* @see FileUtils#relativize(String, String)
* @see FileUtils#relativizePath(String, String, String, boolean)
* @since 3.7
*/
public String relativize(String base, String other) {
return FileUtils.relativize(base, other);
return FileUtils.relativizePath(base, other, File.separator, this.isCaseSensitive());
}
/**

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@ -468,10 +468,71 @@ public static File createTempDir(String prefix, String suffix, File dir)
throw new IOException(JGitText.get().cannotCreateTempDir);
}
/**
* This will try and make a given path relative to another.
* @deprecated Use the more-clearly-named
* {@link FileUtils#relativizeNativePath(String, String)}
* instead, or directly call
* {@link FileUtils#relativizePath(String, String, String, boolean)}
*
* Expresses <code>other</code> as a relative file path from
* <code>base</code>. File-separator and case sensitivity are
* based on the current file system.
*
* See also
* {@link FileUtils#relativizePath(String, String, String, boolean)}.
*
* @param base
* Base path
* @param other
* Destination path
* @return Relative path from <code>base</code> to <code>other</code>
* @since 3.7
*/
@Deprecated
public static String relativize(String base, String other) {
return relativizeNativePath(base, other);
}
/**
* Expresses <code>other</code> as a relative file path from <code>base</code>.
* File-separator and case sensitivity are based on the current file system.
*
* See also {@link FileUtils#relativizePath(String, String, String, boolean)}.
*
* @param base
* Base path
* @param other
* Destination path
* @return Relative path from <code>base</code> to <code>other</code>
* @since 4.8
*/
public static String relativizeNativePath(String base, String other) {
return FS.DETECTED.relativize(base, other);
}
/**
* Expresses <code>other</code> as a relative file path from <code>base</code>.
* File-separator and case sensitivity are based on Git's internal representation of files (which matches Unix).
*
* See also {@link FileUtils#relativizePath(String, String, String, boolean)}.
*
* @param base
* Base path
* @param other
* Destination path
* @return Relative path from <code>base</code> to <code>other</code>
* @since 4.8
*/
public static String relativizeGitPath(String base, String other) {
return relativizePath(base, other, "/", false); //$NON-NLS-1$
}
/**
* Expresses <code>other</code> as a relative file path from <code>base</code>
* <p>
* For example, if this is called with the two following paths :
* For example, if called with the two following paths :
*
* <pre>
* <code>base = "c:\\Users\\jdoe\\eclipse\\git\\project"</code>
@ -480,9 +541,7 @@ public static File createTempDir(String prefix, String suffix, File dir)
*
* This will return "..\\another_project\\pom.xml".
* </p>
* <p>
* This method uses {@link File#separator} to split the paths into segments.
* </p>
*
* <p>
* <b>Note</b> that this will return the empty String if <code>base</code>
* and <code>other</code> are equal.
@ -494,41 +553,44 @@ public static File createTempDir(String prefix, String suffix, File dir)
* folder and not a file.
* @param other
* The path that will be made relative to <code>base</code>.
* @param dirSeparator
* A string that separates components of the path. In practice, this is "/" or "\\".
* @param caseSensitive
* Whether to consider differently-cased directory names as distinct
* @return A relative path that, when resolved against <code>base</code>,
* will yield the original <code>other</code>.
* @since 3.7
* @since 4.8
*/
public static String relativize(String base, String other) {
public static String relativizePath(String base, String other, String dirSeparator, boolean caseSensitive) {
if (base.equals(other))
return ""; //$NON-NLS-1$
final boolean ignoreCase = !FS.DETECTED.isCaseSensitive();
final String[] baseSegments = base.split(Pattern.quote(File.separator));
final String[] baseSegments = base.split(Pattern.quote(dirSeparator));
final String[] otherSegments = other.split(Pattern
.quote(File.separator));
.quote(dirSeparator));
int commonPrefix = 0;
while (commonPrefix < baseSegments.length
&& commonPrefix < otherSegments.length) {
if (ignoreCase
if (caseSensitive
&& baseSegments[commonPrefix]
.equals(otherSegments[commonPrefix]))
commonPrefix++;
else if (!caseSensitive
&& baseSegments[commonPrefix]
.equalsIgnoreCase(otherSegments[commonPrefix]))
commonPrefix++;
else if (!ignoreCase
&& baseSegments[commonPrefix]
.equals(otherSegments[commonPrefix]))
commonPrefix++;
else
break;
}
final StringBuilder builder = new StringBuilder();
for (int i = commonPrefix; i < baseSegments.length; i++)
builder.append("..").append(File.separator); //$NON-NLS-1$
builder.append("..").append(dirSeparator); //$NON-NLS-1$
for (int i = commonPrefix; i < otherSegments.length; i++) {
builder.append(otherSegments[i]);
if (i < otherSegments.length - 1)
builder.append(File.separator);
builder.append(dirSeparator);
}
return builder.toString();
}