| /* |
| * 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.sched.vfs; |
| |
| import java.util.zip.ZipEntry; |
| |
| import javax.annotation.Nonnull; |
| |
| /** |
| * Utilities for Zip VFS implementations. |
| */ |
| public final class ZipUtils { |
| |
| public static final char ZIP_SEPARATOR = '/'; |
| |
| static final String ZIP_SEPARATOR_STRING = "/"; |
| |
| static final String ROOT_ENTRY_NAME = ""; |
| |
| private ZipUtils() { |
| // do not instantiate |
| } |
| |
| @Nonnull |
| static String getFileSimpleName(@Nonnull ZipEntry entry) { |
| String name = entry.getName(); |
| assert !name.endsWith(ZIP_SEPARATOR_STRING); |
| int index = name.lastIndexOf(ZIP_SEPARATOR); |
| if (index < 0) { |
| return name; |
| } else { |
| return name.substring(index + 1); |
| } |
| } |
| |
| @Nonnull |
| static String getDirSimpleName(@Nonnull ZipEntry entry) { |
| String name = entry.getName(); |
| if (name.equals(ROOT_ENTRY_NAME)) { // necessary special case for root zip entry |
| return ""; |
| } |
| assert name.endsWith(ZIP_SEPARATOR_STRING); |
| int index = name.lastIndexOf(ZIP_SEPARATOR, name.length() - 2); |
| int startIndex = index + 1; // if '/' was not found, startIndex will be 0 |
| return name.substring(startIndex, name.length() - 1); |
| } |
| |
| } |