/*
* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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*/
package java.nio.file;
import java.nio.file.attribute.*;
import java.io.InputStream;
import java.io.IOException;
/**
* Helper class to support copying or moving files when the source and target
* are associated with different providers.
*/
class CopyMoveHelper {
private CopyMoveHelper() { }
/**
* Parses the arguments for a file copy operation.
*/
private static class CopyOptions {
boolean replaceExisting = false;
boolean copyAttributes = false;
boolean followLinks = true;
private CopyOptions() { }
static CopyOptions parse(CopyOption... options) {
CopyOptions result = new CopyOptions();
for (CopyOption option: options) {
if (option == StandardCopyOption.REPLACE_EXISTING) {
result.replaceExisting = true;
continue;
}
if (option == LinkOption.NOFOLLOW_LINKS) {
result.followLinks = false;
continue;
}
if (option == StandardCopyOption.COPY_ATTRIBUTES) {
result.copyAttributes = true;
continue;
}
if (option == null)
throw new NullPointerException();
throw new UnsupportedOperationException("'" + option +
"' is not a recognized copy option");
}
return result;
}
}
/**
* Converts the given array of options for moving a file to options suitable
* for copying the file when a move is implemented as copy + delete.
*/
private static CopyOption[] convertMoveToCopyOptions(CopyOption... options)
throws AtomicMoveNotSupportedException
{
int len = options.length;
CopyOption[] newOptions = new CopyOption[len+2];
for (int i=0; i