/*
* Copyright 2013 the original author or authors.
*
* Licensed 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.
*/
package org.gradle.build.docs.dsl.source;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.Multimap;
import org.gradle.api.Action;
import org.gradle.api.DefaultTask;
import org.gradle.api.tasks.CacheableTask;
import org.gradle.api.tasks.Input;
import org.gradle.api.tasks.InputFile;
import org.gradle.api.tasks.OutputFile;
import org.gradle.api.tasks.PathSensitive;
import org.gradle.api.tasks.PathSensitivity;
import org.gradle.api.tasks.TaskAction;
import org.gradle.build.docs.dsl.source.model.ClassMetaData;
import org.gradle.build.docs.model.SimpleClassMetaDataRepository;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;
@CacheableTask
public class GenerateDefaultImportsTask extends DefaultTask {
private File metaDataFile;
private File importsDestFile;
private File mappingDestFile;
private Set<String> excludePatterns = new LinkedHashSet<String>();
private Set<String> extraPackages = new LinkedHashSet<String>();
@PathSensitive(PathSensitivity.NONE)
@InputFile
public File getMetaDataFile() {
return metaDataFile;
}
public void setMetaDataFile(File metaDataFile) {
this.metaDataFile = metaDataFile;
}
@OutputFile
public File getImportsDestFile() {
return importsDestFile;
}
public void setImportsDestFile(File importsDestFile) {
this.importsDestFile = importsDestFile;
}
@OutputFile
public File getMappingDestFile() {
return mappingDestFile;
}
public void setMappingDestFile(File destFile) {
this.mappingDestFile = destFile;
}
@Input
public Set<String> getExcludedPackages() {
return excludePatterns;
}
public void setExcludedPackages(Set<String> excludedPackages) {
this.excludePatterns = excludedPackages;
}
/**
* Package name can end with '.**' to exclude subpackages as well.
*/
public void excludePackage(String name) {
excludePatterns.add(name);
}
@Input
public Set<String> getExtraPackages() {
return extraPackages;
}
public void setExtraPackages(Set<String> extraPackages) {
this.extraPackages = extraPackages;
}
public void extraPackage(String name) {
extraPackages.add(name);
}
@TaskAction
public void generate() throws IOException {
SimpleClassMetaDataRepository<ClassMetaData> repository = new SimpleClassMetaDataRepository<ClassMetaData>();
repository.load(getMetaDataFile());
final Set<String> excludedPrefixes = new HashSet<String>();
final Set<String> excludedPackages = new HashSet<String>();
for (String excludePattern : excludePatterns) {
if (excludePattern.endsWith(".**")) {
String baseName = excludePattern.substring(0, excludePattern.length() - 3);
excludedPrefixes.add(baseName + '.');
excludedPackages.add(baseName);
} else {
excludedPackages.add(excludePattern);
}
}
final Set<String> packages = new TreeSet<String>();
packages.addAll(extraPackages);
final Multimap<String, String> simpleNames = HashMultimap.create();
repository.each(new Action<ClassMetaData>() {
public void execute(ClassMetaData classMetaData) {
if (classMetaData.getOuterClassName() != null) {
// Ignore inner classes
return;
}
String packageName = classMetaData.getPackageName();
if (excludedPackages.contains(packageName)) {
return;
}
for (String excludedPrefix : excludedPrefixes) {
if (packageName.startsWith(excludedPrefix)) {
return;
}
}
simpleNames.put(classMetaData.getSimpleName(), classMetaData.getClassName());
packages.add(packageName);
}
});
final PrintWriter mappingFileWriter = new PrintWriter(new FileWriter(getMappingDestFile()));
try {
for (Map.Entry<String, Collection<String>> entry : simpleNames.asMap().entrySet()) {
if (entry.getValue().size() > 1) {
System.out.println(String.format("Multiple DSL types have short name '%s'", entry.getKey()));
for (String className : entry.getValue()) {
System.out.println(" * " + className);
}
}
mappingFileWriter.print(entry.getKey());
mappingFileWriter.print(":");
for (String className : entry.getValue()) {
mappingFileWriter.print(className);
mappingFileWriter.print(";");
}
mappingFileWriter.println();
}
} finally {
mappingFileWriter.close();
}
final PrintWriter writer = new PrintWriter(new FileWriter(getImportsDestFile()));
try {
for (String packageName : packages) {
writer.print("import ");
writer.print(packageName);
writer.println(".*");
}
} finally {
writer.close();
}
}
}