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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.omadm.plugin;
import android.text.TextUtils;
import java.util.Arrays;
public final class DmtPathUtils {
public static final String ROOTNODE = "__ROOT__";
private DmtPathUtils() {}
/**
* Checks whether the given path is valid or not.
*
* @param path full path.
* @return true if this is valid path, otherwise false.
*/
public static boolean isValidPath(String path) {
return (!TextUtils.isEmpty(path)) && (".".equals(path) || path.startsWith("./"));
}
/**
* Parses path and returns name of the end node.
*
* @param nodePath path to the node.
* @return node name or null in bad case.
*/
public static String getNodeName(String nodePath) {
String[] data = splitPath(nodePath);
return data[1];
}
/**
* Parses passed path and returns name of the first node
* after root path.
*
* @param rootPath root path.
* @param nodePath full path to the node.
* @return name of the node or null in bad case.
*/
public static String getSubNodeName(String rootPath, String nodePath) {
if (!isValidPath(rootPath) || !isValidPath(nodePath)) {
return null;
}
String prefix = rootPath + '/';
if (!nodePath.startsWith(prefix)) {
return null;
}
int nameEnd = nodePath.indexOf('/', prefix.length());
if (nameEnd == -1) {
return nodePath.substring(prefix.length());
}
return nodePath.substring(prefix.length(), nameEnd);
}
/**
* Parses path and returns name of the end node and its root path.
*
* @param nodePath path to the node.
* @return root path (String[0]) and name node (String[1]).
*/
public static String[] splitPath(String nodePath) {
String[] data = new String[2];
Arrays.fill(data, null);
if (!isValidPath(nodePath)) {
return data;
}
int index = nodePath.lastIndexOf('/');
if (index == -1) {
data[1] = nodePath;
return data;
}
if (nodePath.length() == 1) {
return data;
}
if (index == 0) {
data[1] = nodePath.substring(1);
return data;
}
if (index == nodePath.length() - 1) {
data[0] = nodePath.substring(0, index);
return data;
}
data[0] = nodePath.substring(0, index);
data[1] = nodePath.substring(index + 1);
return data;
}
/**
* Checks whether the root path is a part of the node path.
*
* @param rootPath root path.
* @param nodePath path to some node.
* @return true if these paths are equal or nodePath starts with rootPath.
*/
public static boolean isSubPath(String rootPath, String nodePath) {
if (!isValidPath(rootPath) || !isValidPath(nodePath)) {
return false;
}
if (nodePath.equals(rootPath)) {
return true;
}
return nodePath.startsWith(rootPath + '/');
}
public static String toRelativePath(String rootPath, String path) {
String r = path;
// deal with the root path of plugin tree
if (rootPath.equals(path) || path.isEmpty()) {
r = ROOTNODE;
}
else if (path.startsWith(rootPath)) {
r = path.substring(rootPath.length() + 1);
}
// Log.i(TAG, "'" + path + "' -> '" + r + "'");
return r;
}
/**
* convert to the absolute path
*/
public static String toAbsolutePath(String rootPath, String path) {
String a = path;
if (path.isEmpty() || path.equals(ROOTNODE)) {
a = rootPath;
}
else if (!path.startsWith(rootPath)) {
a = rootPath + '/' + path;
}
// Log.i(TAG, "'" + path + "' -> '" + a + "'");
return a;
}
}
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