1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
* 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);
}
}
}
|
