127 lines
3.6 KiB
Java
Executable File
127 lines
3.6 KiB
Java
Executable File
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.openxml4j.opc.internal;
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import java.io.ByteArrayInputStream;
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import java.io.InputStream;
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import java.io.OutputStream;
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import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
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import org.apache.poi.openxml4j.exceptions.OpenXML4JException;
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import org.apache.poi.openxml4j.opc.Package;
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import org.apache.poi.openxml4j.opc.PackagePart;
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import org.apache.poi.openxml4j.opc.PackagePartName;
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import org.apache.poi.openxml4j.opc.internal.marshallers.ZipPartMarshaller;
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/**
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* Memory version of a package part. Use to
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*
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* @author Julien Chable
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* @version 1.0
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*/
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public final class MemoryPackagePart extends PackagePart {
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/**
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* Storage for the part data.
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*/
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protected byte[] data;
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/**
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* Size of data.
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*/
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protected int length;
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/**
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* Constructor.
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*
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* @param pack
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* The owner package.
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* @param partName
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* The part name.
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* @param contentType
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* The content type.
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* @throws InvalidFormatException
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* If the specified URI is not OPC compliant.
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*/
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public MemoryPackagePart(Package pack, PackagePartName partName,
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String contentType) throws InvalidFormatException {
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super(pack, partName, contentType);
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}
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/**
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* Constructor.
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*
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* @param pack
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* The owner package.
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* @param partName
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* The part name.
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* @param contentType
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* The content type.
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* @param loadRelationships
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* Specify if the relationships will be loaded.
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* @throws InvalidFormatException
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* If the specified URI is not OPC compliant.
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*/
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public MemoryPackagePart(Package pack, PackagePartName partName,
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String contentType, boolean loadRelationships)
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throws InvalidFormatException {
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super(pack, partName, new ContentType(contentType), loadRelationships);
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}
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@Override
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protected InputStream getInputStreamImpl() {
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// If this part has been created from scratch and/or the data buffer is
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// not
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// initialize, so we do it now.
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if (data == null) {
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data = new byte[0];
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}
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return new ByteArrayInputStream(data);
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}
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@Override
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protected OutputStream getOutputStreamImpl() {
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return new MemoryPackagePartOutputStream(this);
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}
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public void clear() {
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data = null;
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length = 0;
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}
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@Override
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public boolean save(OutputStream os) throws OpenXML4JException {
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return new ZipPartMarshaller().marshall(this, os);
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}
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@Override
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public boolean load(InputStream ios) throws InvalidFormatException {
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throw new InvalidFormatException("Method not implemented");
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}
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@Override
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public void close() {
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// Do nothing
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}
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@Override
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public void flush() {
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// Do nothing
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}
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}
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