com.avaje.ebeaninternal.server.lib.resource.DirectoryFinder Maven / Gradle / Ivy
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/**
* Copyright (C) 2006 Robin Bygrave
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.avaje.ebeaninternal.server.lib.resource;
import java.io.File;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Helper object used to find directories typically from the current working
* directory.
*/
public class DirectoryFinder {
private static final Logger logger = Logger.getLogger(DirectoryFinder.class.getName());
/**
* Find a directory by search through subdirectories.
*
* For example, used to find the WEB-INF directory starting from the current
* working directory.
*
*
*
*
* // search to a depth of 3 from the current working directory
* // looking for a directory WEB-INF that contains the subdirectory
* // data
*
* File dir = DirectoryFinder.find(null, "WEB-INF/data", 3);
* if (dir != null) {
* //found the directory
* }
*
*/
public static File find(File startDir, String match, int maxDepth) {
String matchSub = null;
int slashPos = match.indexOf('/');
if (slashPos > -1) {
// match has sub directories
matchSub = match.substring(slashPos + 1);
match = match.substring(0, slashPos);
}
// search for the directory
File found = find(startDir, match, matchSub, 0, maxDepth);
if (found != null && matchSub != null) {
// match has sub directories
return new File(found, matchSub);
}
return found;
}
private static File find(File dir, String match, String matchSub, int depth, int maxDepth) {
if (dir == null) {
String curDir = System.getProperty("user.dir");
dir = new File(curDir);
}
if (dir.exists()) {
File[] list = dir.listFiles();
if (list != null){
for (int i = 0; i < list.length; i++) {
if (isMatch(list[i], match, matchSub)) {
return list[i];
}
}
// go through the directories again
// Aka *NOT* a depth first search
if (depth < maxDepth) {
for (int i = 0; i < list.length; i++) {
if (list[i].isDirectory()) {
File found = find(list[i], match, matchSub, depth + 1, maxDepth);
if (found != null) {
return found;
}
}
}
}
}
}
return null;
}
private static boolean isMatch(File f, String match, String matchSub) {
if (f == null) {
return false;
}
if (!f.isDirectory()) {
return false;
}
if (!f.getName().equalsIgnoreCase(match)) {
return false;
}
if (matchSub == null) {
return true;
}
File sub = new File(f, matchSub);
if (logger.isLoggable(Level.FINEST)){
logger.finest("search; " + f.getPath());
}
return sub.exists();
}
}