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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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.
- */
-
- /* $Id$ */
-
- package org.apache.fop.pdf.xref;
-
- import java.io.ByteArrayOutputStream;
- import java.io.DataOutputStream;
- import java.io.IOException;
- import java.util.ArrayList;
- import java.util.Arrays;
- import java.util.Collections;
- import java.util.List;
-
- import org.junit.Test;
-
- public class CrossReferenceStreamTestCase extends CrossReferenceObjectTest {
-
- private List<Long> uncompressedObjectOffsets;
-
- private List<CompressedObjectReference> compressedObjectReferences;
-
- @Test
- public void testWithNoOffset() throws IOException {
- List<Long> emptyList = Collections.emptyList();
- test(emptyList);
- }
-
- @Test
- public void testWithOffsets() throws IOException {
- test(new ArrayList<Long>(Arrays.asList(0L, 1L, 2L, 3L, 4L)));
- }
-
- @Test
- public void testWithBigOffsets() throws IOException {
- test(new ArrayList<Long>(Arrays.asList(0xffL, 0xffffL, 0xffffffffL, 0xffffffffffffffffL)));
- }
-
- @Test
- public void testWithObjectStreams1() throws IOException {
- List<CompressedObjectReference> compressedObjectReferences =
- Arrays.asList(new CompressedObjectReference(2, 1, 0));
- test(Arrays.asList(0L, null), compressedObjectReferences);
- }
-
- @Test
- public void testWithObjectStreams2() throws IOException {
- int numIndirectObjects = 2;
- int numCompressedObjects = 1;
- List<Long> indirectObjectOffsets
- = new ArrayList<Long>(numIndirectObjects + numCompressedObjects);
- for (long i = 0; i < numIndirectObjects; i++) {
- indirectObjectOffsets.add(i);
- }
- List<CompressedObjectReference> compressedObjectReferences
- = new ArrayList<CompressedObjectReference>();
- for (int index = 0; index < numCompressedObjects; index++) {
- indirectObjectOffsets.add(null);
- int obNum = numIndirectObjects + index + 1;
- compressedObjectReferences.add(new CompressedObjectReference(obNum,
- numIndirectObjects, index));
- }
- test(indirectObjectOffsets, compressedObjectReferences);
- }
-
- private void test(List<Long> indirectObjectOffsets) throws IOException {
- List<CompressedObjectReference> compressedObjectReferences = Collections.emptyList();
- test(indirectObjectOffsets, compressedObjectReferences);
- }
-
- private void test(List<Long> indirectObjectOffsets,
- List<CompressedObjectReference> compressedObjectReferences) throws IOException {
- this.uncompressedObjectOffsets = indirectObjectOffsets;
- this.compressedObjectReferences = compressedObjectReferences;
- runTest();
- }
-
- @Override
- protected CrossReferenceObject createCrossReferenceObject() {
- return new CrossReferenceStream(pdfDocument,
- uncompressedObjectOffsets.size() + 1,
- trailerDictionary,
- STARTXREF,
- uncompressedObjectOffsets,
- compressedObjectReferences);
- }
-
- @Override
- protected byte[] createExpectedCrossReferenceData() throws IOException {
- List<ObjectReference> objectReferences
- = new ArrayList<ObjectReference>(uncompressedObjectOffsets.size());
- for (Long offset : uncompressedObjectOffsets) {
- objectReferences.add(offset == null ? null : new UncompressedObjectReference(offset));
- }
- for (CompressedObjectReference ref : compressedObjectReferences) {
- objectReferences.set(ref.getObjectNumber() - 1, ref);
- }
- int maxObjectNumber = objectReferences.size() + 1;
- ByteArrayOutputStream stream = new ByteArrayOutputStream();
- StringBuilder expected = new StringBuilder(256);
- expected.append(maxObjectNumber + " 0 obj\n")
- .append("<<\n")
- .append(" /Root 1 0 R\n")
- .append(" /Info 2 0 R\n")
- .append(" /ID [<0123456789ABCDEF> <0123456789ABCDEF>]\n")
- .append(" /Type /XRef\n")
- .append(" /Size ").append(Integer.toString(maxObjectNumber + 1)).append('\n')
- .append(" /W [1 8 2]\n")
- .append(" /Length ").append(Integer.toString((maxObjectNumber + 1) * 11 + 1)).append('\n')
- .append(">>\n")
- .append("stream\n");
- stream.write(getBytes(expected));
- DataOutputStream data = new DataOutputStream(stream);
- data.write(new byte[] {0, 0, 0, 0, 0, 0, 0, 0, 0, (byte) 0xff, (byte) 0xff});
- for (ObjectReference objectReference : objectReferences) {
- objectReference.output(data);
- }
- data.write(1);
- data.writeLong(STARTXREF);
- data.write(0);
- data.write(0);
- data.close();
- stream.write(getBytes("\nendstream\nendobj\n"));
- return stream.toByteArray();
- }
-
- }
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