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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.render.ps;
-
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertNotNull;
- import static org.junit.Assert.assertTrue;
-
- import java.io.File;
- import java.io.IOException;
- import java.io.InputStream;
- import java.util.Arrays;
- import java.util.Collection;
- import java.util.Set;
-
- import org.apache.commons.io.IOUtils;
- import org.apache.fop.apps.FOUserAgent;
- import org.apache.fop.render.intermediate.IFContext;
- import org.apache.xmlgraphics.ps.DSCConstants;
- import org.apache.xmlgraphics.ps.PSResource;
- import org.apache.xmlgraphics.ps.dsc.DSCException;
- import org.apache.xmlgraphics.ps.dsc.DSCListener;
- import org.apache.xmlgraphics.ps.dsc.DSCParser;
- import org.apache.xmlgraphics.ps.dsc.DefaultNestedDocumentHandler;
- import org.apache.xmlgraphics.ps.dsc.events.AbstractResourcesDSCComment;
- import org.apache.xmlgraphics.ps.dsc.events.DSCAtend;
- import org.apache.xmlgraphics.ps.dsc.events.DSCCommentBeginDocument;
- import org.apache.xmlgraphics.ps.dsc.events.DSCCommentDocumentNeededResources;
- import org.apache.xmlgraphics.ps.dsc.events.DSCCommentDocumentSuppliedResources;
- import org.apache.xmlgraphics.ps.dsc.events.DSCCommentEndOfFile;
- import org.apache.xmlgraphics.ps.dsc.events.DSCCommentIncludeResource;
- import org.apache.xmlgraphics.ps.dsc.events.DSCCommentPage;
- import org.apache.xmlgraphics.ps.dsc.events.DSCCommentPages;
- import org.junit.Test;
-
- /**
- * Tests the PostScript resource optimization (selective de-duplication of
- * images that are used multiple times).
- */
- public class ResourceOptimizationTestCase extends AbstractPostScriptTestCase {
-
- /**
- * Tests resource optimization.
- * @throws Exception if an error occurs
- */
- @Test
- public void testResourceOptimization() throws Exception {
- FOUserAgent ua = fopFactory.newFOUserAgent();
- PSDocumentHandler handler = new PSDocumentHandler();
- handler.setContext(new IFContext(ua));
- // This is the important part: we're enabling resource optimization
- handler.getPSUtil().setOptimizeResources(true);
- ua.setDocumentHandlerOverride(handler);
-
- // Prepare output file
- File outputFile = renderFile(ua, "ps-resources.fo",
- "-if-l" + handler.getPSUtil().getLanguageLevel());
- verifyPostScriptFile(outputFile);
- }
-
- private void verifyPostScriptFile(File psFile) throws IOException, DSCException {
- InputStream in = new java.io.FileInputStream(psFile);
- in = new java.io.BufferedInputStream(in);
- try {
- DSCParser parser = new DSCParser(in);
-
- //The first form is for arrow_down_small.png (to be reused)
- PSResource form1 = new PSResource(PSResource.TYPE_FORM, "FOPForm:1");
- PSResource helvetica = new PSResource(PSResource.TYPE_FONT, "Helvetica");
- PSResource helveticaBold = new PSResource(PSResource.TYPE_FONT, "Helvetica-Bold");
-
- PSResource res;
- DSCCommentPages pages = (DSCCommentPages)gotoDSCComment(parser, DSCConstants.PAGES);
- assertEquals(2, pages.getPageCount());
-
- DSCCommentDocumentSuppliedResources supplied
- = (DSCCommentDocumentSuppliedResources)gotoDSCComment(parser,
- DSCConstants.DOCUMENT_SUPPLIED_RESOURCES);
- Set resources = supplied.getResources();
- assertEquals(5, resources.size());
- assertTrue(resources.contains(form1));
- assertTrue("Expected barcode.eps as supplied resource",
- resources.contains(new PSResource(PSResource.TYPE_FILE,
- "test/resources/images/barcode.eps")));
-
- DSCCommentDocumentNeededResources needed
- = (DSCCommentDocumentNeededResources)gotoDSCComment(parser,
- DSCConstants.DOCUMENT_NEEDED_RESOURCES);
- resources = needed.getResources();
- assertEquals(2, resources.size());
- assertTrue("Expected Helvetica as needed resource",
- resources.contains(new PSResource(PSResource.TYPE_FONT, "Helvetica")));
- assertTrue("Expected Helvetica-Bold as needed resource",
- resources.contains(new PSResource(PSResource.TYPE_FONT, "Helvetica-Bold")));
-
- //Some document structure checking
- assertNotNull(gotoDSCComment(parser, DSCConstants.BEGIN_DEFAULTS));
- assertNotNull(gotoDSCComment(parser, DSCConstants.END_DEFAULTS));
- assertNotNull(gotoDSCComment(parser, DSCConstants.BEGIN_PROLOG));
- assertNotNull(gotoDSCComment(parser, DSCConstants.END_PROLOG));
- assertNotNull(gotoDSCComment(parser, DSCConstants.BEGIN_SETUP));
-
- //Check includes for the two referenced base 14 fonts
- DSCCommentIncludeResource include;
- Collection strings = new java.util.HashSet(
- Arrays.asList(new String[] {"Helvetica", "Helvetica-Bold"}));
- for (int i = 0; i < 2; i++) {
- include = (DSCCommentIncludeResource)gotoDSCComment(
- parser, DSCConstants.INCLUDE_RESOURCE);
- res = include.getResource();
- assertEquals(PSResource.TYPE_FONT, res.getType());
- strings.remove(res.getName());
- }
- assertEquals(0, strings.size());
-
- checkResourceComment(parser, DSCConstants.BEGIN_RESOURCE,
- new PSResource(PSResource.TYPE_ENCODING, "WinAnsiEncoding"));
-
- //Here, we encounter form 1 again
- checkResourceComment(parser, DSCConstants.BEGIN_RESOURCE, form1);
-
- assertNotNull(gotoDSCComment(parser, DSCConstants.END_SETUP));
- //Now the actual pages begin
-
- //---=== Page 1 ===---
- DSCCommentPage page = (DSCCommentPage)gotoDSCComment(parser, DSCConstants.PAGE);
- assertEquals(1, page.getPagePosition());
-
- assertEquals(DSCAtend.class,
- gotoDSCComment(parser, DSCConstants.PAGE_RESOURCES).getClass());
- assertNotNull(gotoDSCComment(parser, DSCConstants.BEGIN_PAGE_SETUP));
- assertNotNull(gotoDSCComment(parser, DSCConstants.END_PAGE_SETUP));
-
- PSResource form2 = new PSResource(PSResource.TYPE_FORM, "FOPForm:2");
- checkResourceComment(parser, DSCConstants.BEGIN_RESOURCE, form2);
- assertNotNull(gotoDSCComment(parser, DSCConstants.PAGE_TRAILER));
-
- AbstractResourcesDSCComment pageResources;
- pageResources = (AbstractResourcesDSCComment)gotoDSCComment(
- parser, DSCConstants.PAGE_RESOURCES);
- resources = pageResources.getResources();
- assertEquals(5, resources.size());
- assertTrue(resources.contains(form1));
- assertTrue(resources.contains(form2));
- assertTrue(resources.contains(helvetica));
- assertTrue(resources.contains(helveticaBold));
-
- //---=== Page 2 ===---
- page = (DSCCommentPage)gotoDSCComment(parser, DSCConstants.PAGE);
- assertEquals(2, page.getPagePosition());
-
- assertEquals(DSCAtend.class,
- gotoDSCComment(parser, DSCConstants.PAGE_RESOURCES).getClass());
- assertNotNull(gotoDSCComment(parser, DSCConstants.BEGIN_PAGE_SETUP));
- assertNotNull(gotoDSCComment(parser, DSCConstants.END_PAGE_SETUP));
-
- DSCCommentBeginDocument beginDocument;
- beginDocument = (DSCCommentBeginDocument)gotoDSCComment(
- parser, DSCConstants.BEGIN_DOCUMENT);
- assertEquals("test/resources/images/barcode.eps",
- beginDocument.getResource().getName());
- DSCListener listener = new DefaultNestedDocumentHandler(null);
- listener.processEvent(beginDocument, parser);
-
- //And again (the barcode is generated twice)
- beginDocument = (DSCCommentBeginDocument)gotoDSCComment(
- parser, DSCConstants.BEGIN_DOCUMENT);
- assertEquals("test/resources/images/barcode.eps",
- beginDocument.getResource().getName());
- listener.processEvent(beginDocument, parser);
-
- assertNotNull(gotoDSCComment(parser, DSCConstants.PAGE_TRAILER));
- pageResources = (AbstractResourcesDSCComment)gotoDSCComment(
- parser, DSCConstants.PAGE_RESOURCES);
- resources = pageResources.getResources();
- assertEquals(6, resources.size());
- assertTrue(resources.contains(form1));
- assertFalse(resources.contains(form2));
- assertTrue(resources.contains(helvetica));
- assertTrue(resources.contains(helveticaBold));
- assertTrue(resources.contains(beginDocument.getResource()));
-
- assertNotNull(gotoDSCComment(parser, DSCConstants.TRAILER));
- //No headers in between, as they should have been put at the beginning of the file
- assertEquals(DSCCommentEndOfFile.class, parser.nextEvent().asDSCComment().getClass());
-
- } finally {
- IOUtils.closeQuietly(in);
- }
- }
-
- }
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