com.android.multidex.ArchivePathElement Maven / Gradle / Ivy
/*
* Copyright (C) 2013 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.multidex;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
/**
* A zip element.
*/
class ArchivePathElement implements ClassPathElement {
static class DirectoryEntryException extends IOException {
}
private final ZipFile archive;
public ArchivePathElement(ZipFile archive) {
this.archive = archive;
}
@Override
public InputStream open(String path) throws IOException {
ZipEntry entry = archive.getEntry(path);
if (entry == null) {
throw new FileNotFoundException("File \"" + path + "\" not found");
} else if (entry.isDirectory()) {
throw new DirectoryEntryException();
} else {
return archive.getInputStream(entry);
}
}
@Override
public void close() throws IOException {
archive.close();
}
@Override
public Iterable list() {
return new Iterable() {
@Override
public Iterator iterator() {
return new Iterator() {
Enumeration delegate = archive.entries();
ZipEntry next = null;
@Override
public boolean hasNext() {
while (next == null && delegate.hasMoreElements()) {
next = delegate.nextElement();
if (next.isDirectory()) {
next = null;
}
}
return next != null;
}
@Override
public String next() {
if (hasNext()) {
String name = next.getName();
next = null;
return name;
} else {
throw new NoSuchElementException();
}
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
};
}
}