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package com.atlassian.maven.plugin.clover.internal.scanner;
/*
* 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.
*/
import com.google.common.collect.Iterables;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.types.selectors.FileSelector;
import org.apache.tools.ant.types.selectors.DependSelector;
import com.atlassian.maven.plugin.clover.internal.CompilerConfiguration;
import org.jetbrains.annotations.NotNull;
import java.io.File;
import java.util.ArrayList;
import java.util.Map;
import java.util.HashMap;
import java.util.Set;
import java.util.List;
import java.util.Arrays;
import java.util.Iterator;
/**
* Code common to compute the list of source files to instrument (main sources, test sources) for Java and Groovy
* languages.
*/
public abstract class AbstractSourceScanner implements CloverSourceScanner {
private interface SourceRootVisitor {
void visitDir(File dir);
}
@NotNull
private final CompilerConfiguration configuration;
@NotNull
private final File targetDir;
/**
*
* @param configuration compiler configuration
* @param outputSourceDirectory where to put instrumented sources
*/
public AbstractSourceScanner(@NotNull final CompilerConfiguration configuration, @NotNull final String outputSourceDirectory) {
this.configuration = configuration;
this.targetDir = new File(outputSourceDirectory);
}
/**
* {@inheritDoc}
*
* This method handles a special case: don't return excludes from native Groovy source directory (src/main/groovy
* or src/test/groovy) because such files shall not be copied to instrumented sources directory
* (target/clover/src-instrumented or target/clover/src-test/instrumented); a reason is that gmaven-plugin and
* groovy-eclipse-plugin have the src/xxx/groovy location hardcoded and they will compile this source root
* no matter what other compilation source roots or source directory are provided; it means that we would end
* up with a 'duplicate class' build error if files are copied.
*
* @see CloverSourceScanner#getExcludedFiles()
*/
public Map getExcludedFiles() {
Map excludedFiles = computeExcludedFiles(getDirectoryScanner());
// special case: don't return excludes from 'src/(main|test)/groovy'
removeGroovySourceRoot(excludedFiles.keySet());
return excludedFiles;
}
/**
* {@inheritDoc}
*
* @see CloverSourceScanner#getSourceFilesToInstrument()
*/
public Map getSourceFilesToInstrument() {
return getSourceFilesToInstrument(LanguageFileExtensionFilter.ANY_LANGUAGE, false);
}
/**
*
* This method can handle a special case: don't return excludes from native Groovy source directory (src/main/groovy
* or src/test/groovy) because such files shall not be copied to instrumented sources directory
* (target/clover/src-instrumented or target/clover/src-test/instrumented); a reason is that gmaven and
* groovy-eclipse-plugin have the src/xxx/groovy location hardcoded and they will compile this source root
* no matter what other compilation source roots or source directory are provided; it means that we would end
* up with a 'duplicate class' build error if files would be copied.
*
* Please note however than in case when Groovy sources are located in a native Java source directory (src/main/java
* or src/test/java) then such files must be copied. A reason is that source roots will be redirected to the
* Clover's instrumented directory (target/clover/src-instrumented or target/clover/src-test/instrumented) and the
* groovy compiler must find both Java and Groovy files.
*
* @param languageFileFilter extra filter (in addition to includes/excludes) based on the programming language
* @param skipGroovySourceDirectory if true then it will not return files located under Groovy
* source directory (i.e. 'src/main/groovy' or 'src/test/groovy')
* @return Map<File,String[]>
*/
public Map getSourceFilesToInstrument(LanguageFileFilter languageFileFilter, boolean skipGroovySourceDirectory) {
Map includedFiles = computeIncludedFiles(getDirectoryScanner(), languageFileFilter);
// special case: don't return includes from 'src/(main|test)/groovy'
if (skipGroovySourceDirectory) {
removeGroovySourceRoot(includedFiles.keySet());
}
return includedFiles;
}
protected abstract List getCompileSourceRoots();
protected abstract String getSourceDirectory();
protected CompilerConfiguration getConfiguration() {
return this.configuration;
}
/**
* From a list of provided sourceRoots remove those which specific for this scanner,
* unless the specific folder points to the same location as the {@link #getSourceDirectory()}.
*
* @param sourceRoots list to be modified
* @see #getSourceFilesToInstrument()
*/
protected abstract void removeGroovySourceRoot(@NotNull final Set sourceRoots);
protected void removeSourceRoot(final Set sourceRoots, String sourceRootToRemove) {
for (final Iterator iter = sourceRoots.iterator(); iter.hasNext(); ) {
final String sourceRoot = iter.next();
if (sourceRoot.endsWith(sourceRootToRemove)) {
iter.remove();
}
}
}
/**
* Returns a Plexus scanner object that scans a source root and filters files according to inclusion and
* exclusion patterns. In our case at hand we include only Java sources as these are the only files we want
* to instrument.
* @return DirectoryScanner
*/
private DirectoryScanner getDirectoryScanner() {
final Set includes = getConfiguration().getIncludes();
final Set excludes = getConfiguration().getExcludes();
configuration.getLog().debug("excludes patterns = " + excludes);
configuration.getLog().debug("includes patterns = " + includes);
final DirectoryScanner dirScan = new DirectoryScanner();
dirScan.addExcludes(Iterables.toArray(excludes, String.class));
dirScan.setIncludes(Iterables.toArray(includes, String.class));
dirScan.addDefaultExcludes();
final DependSelector selector = new DependSelector();
selector.setTargetdir(targetDir);
dirScan.setSelectors(new FileSelector[]{selector});
return dirScan;
}
private Map computeExcludedFiles(final DirectoryScanner scanner) {
final Map files = new HashMap();
visitSourceRoots(new SourceRootVisitor() {
public void visitDir(File dir) {
scanner.setBasedir(dir);
final Set configurationIncludes = getConfiguration().getIncludes();
final String[] includes = concatArrays(
Iterables.toArray(configurationIncludes, String.class),
DirectoryScanner.getDefaultExcludes());
scanner.setIncludes(includes);// ensure that .svn dirs etc are not considered excluded
scanner.scan();
final String[] sourcesToAdd = concatArrays(scanner.getExcludedFiles(), scanner.getNotIncludedFiles());
configuration.getLog().debug("excluding files from instrumentation = " + Arrays.asList(sourcesToAdd));
if (sourcesToAdd.length > 0) {
files.put(dir.getPath(), sourcesToAdd);
}
}
});
return files;
}
private Map computeIncludedFiles(final DirectoryScanner scanner, final LanguageFileFilter languageFilter) {
final Map files = new HashMap();
visitSourceRoots(new SourceRootVisitor() {
public void visitDir(File dir) {
scanner.setBasedir(dir);
scanner.scan();
final String[] sourcesToAdd = languageFilter.filter(scanner.getIncludedFiles());
if (sourcesToAdd.length > 0) {
configuration.getLog().debug("including files for instrumentation = " + Arrays.asList(sourcesToAdd));
files.put(dir.getAbsolutePath(), sourcesToAdd);
}
}
});
return files;
}
private String[] concatArrays(final String[] a1, final String[] a2) {
final String[] result = new String[a1.length + a2.length];
System.arraycopy(a1, 0, result, 0, a1.length);
System.arraycopy(a2, 0, result, a1.length, a2.length);
return result;
}
private boolean isGeneratedSourcesDirectory(final String sourceRoot) {
final String generatedSrcDirDefaultLifecycle = File.separator + "target" + File.separator + "generated-sources";
final String generatedSrcDirCloverLifecycle = File.separator + "target" + File.separator + "clover" + File.separator + "generated-sources";
return sourceRoot.indexOf(generatedSrcDirDefaultLifecycle) != -1
|| sourceRoot.indexOf(generatedSrcDirCloverLifecycle) != -1;
}
/**
* Returns list of source roots in which source files shall be searched. If configuration has
* includesAllSourceRoots=true then it will return generated sources as well.
* @return List<String>
*/
private List getResolvedSourceRoots() {
final List sourceRoots = new ArrayList();
if (getConfiguration().isIncludesAllSourceRoots()) {
// take all roots
sourceRoots.addAll(getCompileSourceRoots());
} else {
// take non-generated source roots
for (String sourceRoot : getCompileSourceRoots()) {
if (!isGeneratedSourcesDirectory(sourceRoot)) {
sourceRoots.add(sourceRoot);
}
}
}
return sourceRoots;
}
private void visitSourceRoots(final SourceRootVisitor visitor) {
// Decide whether to instrument all source roots or only the main source root.
for (String resolvedSourceRoot : getResolvedSourceRoots()) {
final File sourceRoot = new File(resolvedSourceRoot);
if (sourceRoot.exists()) {
visitor.visitDir(sourceRoot);
}
}
}
}
