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17
18
19
20 package org.apache.fop.layoutengine;
21
22 import java.io.File  ;
23 import java.io.IOException ;
24 import java.lang.reflect.Constructor ;
25 import java.util.Iterator ;
26 import java.util.List ;
27 import java.util.Map ;
28
29 import javax.xml.parsers.DocumentBuilder ;
30 import javax.xml.parsers.DocumentBuilderFactory ;
31 import javax.xml.parsers.ParserConfigurationException ;
32 import javax.xml.transform.Result ;
33 import javax.xml.transform.Source ;
34 import javax.xml.transform.Templates ;
35 import javax.xml.transform.Transformer ;
36 import javax.xml.transform.TransformerConfigurationException ;
37 import javax.xml.transform.TransformerException ;
38 import javax.xml.transform.dom.DOMResult ;
39 import javax.xml.transform.dom.DOMSource ;
40 import javax.xml.transform.sax.SAXResult ;
41 import javax.xml.transform.sax.SAXTransformerFactory ;
42 import javax.xml.transform.sax.TransformerHandler ;
43 import javax.xml.transform.stream.StreamResult ;
44 import javax.xml.transform.stream.StreamSource ;
45
46 import org.apache.fop.apps.FOUserAgent;
47 import org.apache.fop.apps.Fop;
48 import org.apache.fop.apps.FopFactory;
49 import org.apache.fop.apps.FormattingResults;
50 import org.apache.fop.layoutmgr.ElementListObserver;
51 import org.apache.fop.render.xml.XMLRenderer;
52 import org.apache.xpath.XPathAPI;
53 import org.apache.xpath.objects.XObject;
54 import org.w3c.dom.Document ;
55 import org.w3c.dom.Element ;
56 import org.w3c.dom.Node ;
57 import org.w3c.dom.NodeList ;
58 import org.xml.sax.SAXException ;
59
60
64 public class LayoutEngineTester {
65
66 private static final Map CHECK_CLASSES = new java.util.HashMap ();
67
68 private FopFactory fopFactory = FopFactory.newInstance();
70 private FopFactory fopFactoryWithBase14Kerning = FopFactory.newInstance();
71
72 private SAXTransformerFactory tfactory
73 = (SAXTransformerFactory )SAXTransformerFactory.newInstance();
74
75 private Templates testcase2fo;
76 private Templates testcase2checks;
77
78 private File areaTreeBackupDir;
79
80 static {
81 CHECK_CLASSES.put("true", TrueCheck.class);
82 CHECK_CLASSES.put("eval", EvalCheck.class);
83 CHECK_CLASSES.put("element-list", ElementListCheck.class);
84 CHECK_CLASSES.put("result", ResultCheck.class);
85 }
86
87
92 public LayoutEngineTester(File areaTreeBackupDir) {
93 this.areaTreeBackupDir = areaTreeBackupDir;
94 fopFactory.setBase14KerningEnabled(false);
95 fopFactoryWithBase14Kerning.setBase14KerningEnabled(true);
96 }
97
98 private Templates getTestcase2FOStylesheet() throws TransformerConfigurationException {
99 if (testcase2fo == null) {
100 Source src = new StreamSource (new File ("test/layoutengine/testcase2fo.xsl"));
102 testcase2fo = tfactory.newTemplates(src);
103 }
104 return testcase2fo;
105 }
106
107 private Templates getTestcase2ChecksStylesheet() throws TransformerConfigurationException {
108 if (testcase2checks == null) {
109 Source src = new StreamSource (new File ("test/layoutengine/testcase2checks.xsl"));
111 testcase2checks = tfactory.newTemplates(src);
112 }
113 return testcase2checks;
114 }
115
116
124 public void runTest(File testFile)
125 throws TransformerException , SAXException , IOException , ParserConfigurationException {
126
127 DOMResult domres = new DOMResult ();
128
129 ElementListCollector elCollector = new ElementListCollector();
130 ElementListObserver.addObserver(elCollector);
131
132 Fop fop;
133
134 try {
135 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
136 dbf.setNamespaceAware(true);
137 dbf.setValidating(false);
138 DocumentBuilder builder = dbf.newDocumentBuilder();
139 Document testDoc = builder.parse(testFile);
140
141 XObject xo = XPathAPI.eval(testDoc, "/testcase/cfg/base14kerning");
142 String s = xo.str();
143 boolean base14kerning = ("true".equalsIgnoreCase(s));
144 FopFactory effFactory = (base14kerning ? fopFactoryWithBase14Kerning : fopFactory);
145
146 Transformer transformer = getTestcase2FOStylesheet().newTransformer();
148 Source src = new DOMSource (testDoc);
149
150 TransformerHandler athandler = tfactory.newTransformerHandler();
152 athandler.setResult(domres);
153
154 FOUserAgent ua = effFactory.newFOUserAgent();
156 ua.setBaseURL(testFile.getParentFile().toURL().toString());
157 XMLRenderer atrenderer = new XMLRenderer();
158 atrenderer.setUserAgent(ua);
159 atrenderer.setContentHandler(athandler);
160 ua.setRendererOverride(atrenderer);
161 fop = effFactory.newFop(ua);
162
163 SAXResult fores = new SAXResult (fop.getDefaultHandler());
164 transformer.transform(src, fores);
165 } finally {
166 ElementListObserver.removeObserver(elCollector);
167 }
168
169 Document doc = (Document )domres.getNode();
170 if (this.areaTreeBackupDir != null) {
171 saveAreaTreeXML(doc, new File (this.areaTreeBackupDir, testFile.getName() + ".at.xml"));
172 }
173 FormattingResults results = fop.getResults();
174 LayoutResult result = new LayoutResult(doc, elCollector, results);
175 checkAll(testFile, result);
176 }
177
178
183 protected LayoutEngineCheck createCheck(Element el) {
184 String name = el.getTagName();
185 Class clazz = (Class )CHECK_CLASSES.get(name);
186 if (clazz != null) {
187 try {
188 Constructor c = clazz.getDeclaredConstructor(new Class [] {Node .class});
189 LayoutEngineCheck instance = (LayoutEngineCheck)c.newInstance(new Object [] {el});
190 return instance;
191 } catch (Exception e) {
192 throw new RuntimeException ("Error while instantiating check '"
193 + name + "': " + e.getMessage());
194 }
195 } else {
196 throw new IllegalArgumentException ("No check class found: " + name);
197 }
198 }
199
200
206 protected void checkAll(File testFile, LayoutResult result) throws TransformerException {
207 Transformer transformer = getTestcase2ChecksStylesheet().newTransformer();
208 Source src = new StreamSource (testFile);
209 DOMResult res = new DOMResult ();
210 transformer.transform(src, res);
211
212 List checks = new java.util.ArrayList ();
213 Document doc = (Document )res.getNode();
214 NodeList nodes = doc.getDocumentElement().getChildNodes();
215 for (int i = 0; i < nodes.getLength(); i++) {
216 Node node = nodes.item(i);
217 if (node instanceof Element ) {
218 checks.add(createCheck((Element )node));
219 }
220 }
221
222 if (checks.size() == 0) {
223 throw new RuntimeException ("No checks are available!");
224 }
225 Iterator i = checks.iterator();
226 while (i.hasNext()) {
227 LayoutEngineCheck check = (LayoutEngineCheck)i.next();
228 check.check(result);
229 }
230 }
231
232
238 protected void saveAreaTreeXML(Document doc, File target) throws TransformerException {
239 Transformer transformer = tfactory.newTransformer();
240 Source src = new DOMSource (doc);
241 Result res = new StreamResult (target);
242 transformer.transform(src, res);
243 }
244 }
245 |
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