/*
* ====================================================================
* Copyright (c) 2004-2009 TMate Software Ltd. All rights reserved.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://svnkit.com/license.html
* If newer versions of this license are posted there, you may use a
* newer version instead, at your option.
* ====================================================================
*/
package org.tmatesoft.svn.core.internal.util;
import java.util.Collection;
import org.tmatesoft.svn.core.SVNException;
import org.tmatesoft.svn.core.SVNURL;
/**
* @author TMate Software Ltd.
* @version 1.3
*/
public class SVNURLUtil {
public static String getRelativeURL(SVNURL parent, SVNURL child) {
String parentURLAsString = parent.toString();
String childURLAsString = child.toString();
String relativePath = SVNPathUtil.getPathAsChild(parentURLAsString, childURLAsString);
return relativePath == null ? "" : relativePath;
}
public static SVNURL getCommonURLAncestor(SVNURL url1, SVNURL url2) {
// skip protocol and host, if they are different -> return null;
if (url1 == null || url2 == null) {
return null;
}
if (!url1.getProtocol().equals(url2.getProtocol()) || !url1.getHost().equals(url2.getHost()) ||
url1.getPort() != url2.getPort()) {
return null;
}
if (url1.getUserInfo() != null) {
if (!url1.getUserInfo().equals(url2.getUserInfo())) {
return null;
}
} else {
if (url2.getUserInfo() != null) {
return null;
}
}
String path1 = url1.getPath();
String path2 = url2.getPath();
String commonPath = SVNPathUtil.getCommonPathAncestor(path1, path2);
try {
return url1.setPath(commonPath, false);
} catch (SVNException e) {
}
return null;
}
public static SVNURL condenceURLs(SVNURL[] urls, Collection condencedPaths, boolean removeRedundantURLs) {
if (urls == null || urls.length == 0) {
return null;
}
if (urls.length == 1) {
return urls[0];
}
SVNURL rootURL = urls[0];
for (int i = 0; i < urls.length; i++) {
rootURL = getCommonURLAncestor(rootURL, urls[i]);
}
if (condencedPaths != null && removeRedundantURLs) {
for (int i = 0; i < urls.length; i++) {
SVNURL url1 = urls[i];
if (url1 == null) {
continue;
}
for (int j = 0; j < urls.length; j++) {
if (i == j) {
continue;
}
SVNURL url2 = urls[j];
if (url2 == null) {
continue;
}
SVNURL common = getCommonURLAncestor(url1, url2);
if (common == null) {
continue;
}
if (common.equals(url1)) {
urls[j] = null;
} else if (common.equals(url2)) {
urls[i] = null;
}
}
}
for (int j = 0; j < urls.length; j++) {
SVNURL url = urls[j];
if (url != null && url.equals(rootURL)) {
urls[j] = null;
}
}
}
if (condencedPaths != null) {
for (int i = 0; i < urls.length; i++) {
SVNURL url = urls[i];
if (url == null) {
continue;
}
String path = url.toString();
if (rootURL != null) {
path = path.substring(rootURL.toString().length());
if (path.startsWith("/")) {
path = path.substring(1);
}
}
condencedPaths.add(path);
}
}
return rootURL;
}
}