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19 package org.apache.maven.project.interpolation;
20
21 import java.io.File;
22 import java.io.IOException;
23 import java.io.StringReader;
24 import java.io.StringWriter;
25 import java.util.ArrayList;
26 import java.util.Arrays;
27 import java.util.Collections;
28 import java.util.List;
29 import java.util.Map;
30 import java.util.Properties;
31
32 import org.apache.maven.model.Model;
33 import org.apache.maven.model.io.xpp3.MavenXpp3Reader;
34 import org.apache.maven.model.io.xpp3.MavenXpp3Writer;
35 import org.apache.maven.project.DefaultProjectBuilderConfiguration;
36 import org.apache.maven.project.ProjectBuilderConfiguration;
37 import org.apache.maven.project.path.PathTranslator;
38 import org.codehaus.plexus.component.annotations.Requirement;
39 import org.codehaus.plexus.interpolation.AbstractValueSource;
40 import org.codehaus.plexus.interpolation.InterpolationException;
41 import org.codehaus.plexus.interpolation.InterpolationPostProcessor;
42 import org.codehaus.plexus.interpolation.Interpolator;
43 import org.codehaus.plexus.interpolation.MapBasedValueSource;
44 import org.codehaus.plexus.interpolation.ObjectBasedValueSource;
45 import org.codehaus.plexus.interpolation.PrefixAwareRecursionInterceptor;
46 import org.codehaus.plexus.interpolation.PrefixedObjectValueSource;
47 import org.codehaus.plexus.interpolation.PrefixedValueSourceWrapper;
48 import org.codehaus.plexus.interpolation.RecursionInterceptor;
49 import org.codehaus.plexus.interpolation.ValueSource;
50 import org.codehaus.plexus.logging.AbstractLogEnabled;
51 import org.codehaus.plexus.logging.Logger;
52 import org.codehaus.plexus.personality.plexus.lifecycle.phase.Initializable;
53 import org.codehaus.plexus.personality.plexus.lifecycle.phase.InitializationException;
54 import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
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62 @Deprecated
63 public abstract class AbstractStringBasedModelInterpolator extends AbstractLogEnabled
64 implements ModelInterpolator, Initializable {
65
66 private static final List<String> PROJECT_PREFIXES = Arrays.asList("pom.", "project.");
67
68 private static final List<String> TRANSLATED_PATH_EXPRESSIONS;
69
70 static {
71 List<String> translatedPrefixes = new ArrayList<>();
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76
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78 translatedPrefixes.add("build.directory");
79 translatedPrefixes.add("build.outputDirectory");
80 translatedPrefixes.add("build.testOutputDirectory");
81 translatedPrefixes.add("build.sourceDirectory");
82 translatedPrefixes.add("build.testSourceDirectory");
83 translatedPrefixes.add("build.scriptSourceDirectory");
84 translatedPrefixes.add("reporting.outputDirectory");
85
86 TRANSLATED_PATH_EXPRESSIONS = translatedPrefixes;
87 }
88
89 @Requirement
90 private PathTranslator pathTranslator;
91
92 private Interpolator interpolator;
93
94 private RecursionInterceptor recursionInterceptor;
95
96
97 protected AbstractStringBasedModelInterpolator(PathTranslator pathTranslator) {
98 this.pathTranslator = pathTranslator;
99 }
100
101 protected AbstractStringBasedModelInterpolator() {}
102
103 public Model interpolate(Model model, Map<String, ?> context) throws ModelInterpolationException {
104 return interpolate(model, context, true);
105 }
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120 @Deprecated
121 public Model interpolate(Model model, Map<String, ?> context, boolean strict) throws ModelInterpolationException {
122 Properties props = new Properties();
123 props.putAll(context);
124
125 return interpolate(model, null, new DefaultProjectBuilderConfiguration().setExecutionProperties(props), true);
126 }
127
128 public Model interpolate(Model model, File projectDir, ProjectBuilderConfiguration config, boolean debugEnabled)
129 throws ModelInterpolationException {
130 StringWriter sWriter = new StringWriter(1024);
131
132 MavenXpp3Writer writer = new MavenXpp3Writer();
133 try {
134 writer.write(sWriter, model);
135 } catch (IOException e) {
136 throw new ModelInterpolationException("Cannot serialize project model for interpolation.", e);
137 }
138
139 String serializedModel = sWriter.toString();
140 serializedModel = interpolate(serializedModel, model, projectDir, config, debugEnabled);
141
142 StringReader sReader = new StringReader(serializedModel);
143
144 MavenXpp3Reader modelReader = new MavenXpp3Reader();
145 try {
146 model = modelReader.read(sReader);
147 } catch (IOException | XmlPullParserException e) {
148 throw new ModelInterpolationException(
149 "Cannot read project model from interpolating filter of serialized version.", e);
150 }
151
152 return model;
153 }
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166
167 public String interpolate(
168 String src, Model model, final File projectDir, ProjectBuilderConfiguration config, boolean debug)
169 throws ModelInterpolationException {
170 try {
171 List<ValueSource> valueSources = createValueSources(model, projectDir, config);
172 List<InterpolationPostProcessor> postProcessors = createPostProcessors(model, projectDir, config);
173
174 return interpolateInternal(src, valueSources, postProcessors, debug);
175 } finally {
176 interpolator.clearAnswers();
177 }
178 }
179
180 protected List<ValueSource> createValueSources(
181 final Model model, final File projectDir, final ProjectBuilderConfiguration config) {
182 String timestampFormat = DEFAULT_BUILD_TIMESTAMP_FORMAT;
183
184 Properties modelProperties = model.getProperties();
185 if (modelProperties != null) {
186 timestampFormat = modelProperties.getProperty(BUILD_TIMESTAMP_FORMAT_PROPERTY, timestampFormat);
187 }
188
189 ValueSource modelValueSource1 = new PrefixedObjectValueSource(PROJECT_PREFIXES, model, false);
190 ValueSource modelValueSource2 = new ObjectBasedValueSource(model);
191
192 ValueSource basedirValueSource = new PrefixedValueSourceWrapper(
193 new AbstractValueSource(false) {
194
195 public Object getValue(String expression) {
196 if (projectDir != null && "basedir".equals(expression)) {
197 return projectDir.getAbsolutePath();
198 }
199 return null;
200 }
201 },
202 PROJECT_PREFIXES,
203 true);
204 ValueSource baseUriValueSource = new PrefixedValueSourceWrapper(
205 new AbstractValueSource(false) {
206
207 public Object getValue(String expression) {
208 if (projectDir != null && "baseUri".equals(expression)) {
209 return projectDir.getAbsoluteFile().toPath().toUri().toASCIIString();
210 }
211 return null;
212 }
213 },
214 PROJECT_PREFIXES,
215 false);
216
217 List<ValueSource> valueSources = new ArrayList<>(9);
218
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220 valueSources.add(basedirValueSource);
221 valueSources.add(baseUriValueSource);
222 valueSources.add(new BuildTimestampValueSource(config.getBuildStartTime(), timestampFormat));
223 valueSources.add(modelValueSource1);
224 valueSources.add(new MapBasedValueSource(config.getUserProperties()));
225 valueSources.add(new MapBasedValueSource(modelProperties));
226 valueSources.add(new MapBasedValueSource(config.getExecutionProperties()));
227 valueSources.add(new AbstractValueSource(false) {
228
229 public Object getValue(String expression) {
230 return config.getExecutionProperties().getProperty("env." + expression);
231 }
232 });
233 valueSources.add(modelValueSource2);
234
235 return valueSources;
236 }
237
238 protected List<InterpolationPostProcessor> createPostProcessors(
239 final Model model, final File projectDir, final ProjectBuilderConfiguration config) {
240 return Collections.singletonList((InterpolationPostProcessor) new PathTranslatingPostProcessor(
241 PROJECT_PREFIXES, TRANSLATED_PATH_EXPRESSIONS, projectDir, pathTranslator));
242 }
243
244 @SuppressWarnings("unchecked")
245 protected String interpolateInternal(
246 String src, List<ValueSource> valueSources, List<InterpolationPostProcessor> postProcessors, boolean debug)
247 throws ModelInterpolationException {
248 if (!src.contains("${")) {
249 return src;
250 }
251
252 Logger logger = getLogger();
253
254 String result = src;
255 synchronized (this) {
256 for (ValueSource vs : valueSources) {
257 interpolator.addValueSource(vs);
258 }
259
260 for (InterpolationPostProcessor postProcessor : postProcessors) {
261 interpolator.addPostProcessor(postProcessor);
262 }
263
264 try {
265 try {
266 result = interpolator.interpolate(result, recursionInterceptor);
267 } catch (InterpolationException e) {
268 throw new ModelInterpolationException(e.getMessage(), e);
269 }
270
271 if (debug) {
272 List<Object> feedback = interpolator.getFeedback();
273 if (feedback != null && !feedback.isEmpty()) {
274 logger.debug("Maven encountered the following problems during initial POM interpolation:");
275
276 Object last = null;
277 for (Object next : feedback) {
278 if (next instanceof Throwable) {
279 if (last == null) {
280 logger.debug("", ((Throwable) next));
281 } else {
282 logger.debug(String.valueOf(last), ((Throwable) next));
283 }
284 } else {
285 if (last != null) {
286 logger.debug(String.valueOf(last));
287 }
288
289 last = next;
290 }
291 }
292
293 if (last != null) {
294 logger.debug(String.valueOf(last));
295 }
296 }
297 }
298
299 interpolator.clearFeedback();
300 } finally {
301 for (ValueSource vs : valueSources) {
302 interpolator.removeValuesSource(vs);
303 }
304
305 for (InterpolationPostProcessor postProcessor : postProcessors) {
306 interpolator.removePostProcessor(postProcessor);
307 }
308 }
309 }
310
311 return result;
312 }
313
314 protected RecursionInterceptor getRecursionInterceptor() {
315 return recursionInterceptor;
316 }
317
318 protected void setRecursionInterceptor(RecursionInterceptor recursionInterceptor) {
319 this.recursionInterceptor = recursionInterceptor;
320 }
321
322 protected abstract Interpolator createInterpolator();
323
324 public void initialize() throws InitializationException {
325 interpolator = createInterpolator();
326 recursionInterceptor = new PrefixAwareRecursionInterceptor(PROJECT_PREFIXES);
327 }
328
329 protected final Interpolator getInterpolator() {
330 return interpolator;
331 }
332 }