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/*******************************************************************************
* Copyright (c) 2008, 2010 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.p2.update;
import java.io.File;
import java.net.URL;
import org.eclipse.core.runtime.*;
/**
* Note the methods on this class have inconsistent and unintuitive behaviour. However
* they are unchanged for backwards compatibility. Clients should really use
* {@link URIUtil} instead.
* @since 1.0
*/
public class PathUtil {
public static boolean isWindows = System.getProperty("os.name").startsWith("Win"); //$NON-NLS-1$ //$NON-NLS-2$
private static final String FILE_PROTOCOL = "file:"; //$NON-NLS-1$
public static String makeRelative(String urlString, URL rootURL) {
// we only traffic in file: URLs
int index = urlString.indexOf(FILE_PROTOCOL);
if (index == -1)
return urlString;
index = index + 5;
// ensure we have an absolute path to start with
boolean done = false;
URL url = null;
String file = urlString;
while (!done) {
try {
url = new URL(file);
file = url.getFile();
} catch (java.net.MalformedURLException e) {
done = true;
}
}
if (url == null || !new File(url.getFile()).isAbsolute())
return urlString;
String rootString = rootURL.toExternalForm();
return urlString.substring(0, index) + makeRelative(urlString.substring(index), rootString.substring(rootString.indexOf(FILE_PROTOCOL) + 5));
}
public static String makeRelative(String original, String rootPath) {
IPath path = new Path(original);
// ensure we have an absolute path to start with
if (!path.isAbsolute())
return original;
//Returns the original string if no relativization has been done
String result = makeRelative(path, new Path(rootPath));
return path.toOSString().equals(result) ? original : result;
}
/*
* Make the given path relative to the specified root, if applicable. If not, then
* return the path as-is.
*/
private static String makeRelative(IPath toRel, IPath base) {
//can't make relative if devices are not equal
final String device = toRel.getDevice();
if (device != base.getDevice() && (device == null || !device.equalsIgnoreCase(base.getDevice())))
return toRel.toOSString();
int i = base.matchingFirstSegments(toRel);
if (i == 0) {
return toRel.toOSString();
}
String result = ""; //$NON-NLS-1$
for (int j = 0; j < base.segmentCount() - i; j++) {
result += ".." + IPath.SEPARATOR; //$NON-NLS-1$
}
if (i == toRel.segmentCount())
return "."; //$NON-NLS-1$
//TODO This will return mixed path with some / and some \ on windows!!
result += toRel.setDevice(null).removeFirstSegments(i).toOSString();
return result;
}
/*
* Make the given path absolute to the specified root, if applicable. If not, then
* return the path as-is.
*
* Method similar to one from SimpleConfigurationManipulatorImpl.
*/
public static String makeAbsolute(String original, String rootPath) {
IPath path = new Path(original);
// ensure we have a relative path to start with
if (path.isAbsolute())
return original;
IPath root = new Path(rootPath);
return root.addTrailingSeparator().append(original.replace(':', '}')).toOSString().replace('}', ':');
}
public static String makeAbsolute(String urlString, URL rootURL) {
// we only traffic in file: URLs
int index = urlString.indexOf(FILE_PROTOCOL);
if (index == -1)
return urlString;
index = index + 5;
// ensure we have a relative path to start with
boolean done = false;
URL url = null;
String file = urlString;
while (!done) {
try {
url = new URL(file);
file = url.getFile();
} catch (java.net.MalformedURLException e) {
done = true;
}
}
if (url == null || new File(url.getFile()).isAbsolute())
return urlString;
return urlString.substring(0, index - 5) + makeAbsolute(urlString.substring(index), rootURL.toExternalForm());
}
}
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