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GenerateHensonNavigatorTask.java
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GenerateHensonNavigatorTask.java
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/*
* Copyright 2013 Jake Wharton
* Copyright 2014 Prateek Srivastava (@f2prateek)
*
* 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 dart.henson.plugin.internal;
import static java.util.Collections.singletonList;
import com.android.build.gradle.api.BaseVariant;
import com.google.common.collect.Streams;
import dart.henson.plugin.generator.HensonNavigatorGenerator;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.gradle.api.DefaultTask;
import org.gradle.api.Project;
import org.gradle.api.file.FileCollection;
import org.gradle.api.internal.file.FileCollectionInternal;
import org.gradle.api.internal.file.UnionFileCollection;
import org.gradle.api.internal.tasks.TaskDependencyFactory;
import org.gradle.api.logging.Logger;
import org.gradle.api.tasks.CacheableTask;
import org.gradle.api.tasks.Classpath;
import org.gradle.api.tasks.Input;
import org.gradle.api.tasks.InputFile;
import org.gradle.api.tasks.InputFiles;
import org.gradle.api.tasks.Internal;
import org.gradle.api.tasks.OutputFile;
import org.gradle.api.tasks.TaskAction;
import org.gradle.api.tasks.TaskProvider;
import org.gradle.api.tasks.compile.JavaCompile;
@CacheableTask
public class GenerateHensonNavigatorTask extends DefaultTask {
@InputFiles
@Classpath
FileCollection getJarDependencies() {
return artifactCollection;
}
@Input
String hensonNavigatorPackageName;
public String getHensonNavigatorPackageName(){
return hensonNavigatorPackageName;
}
File destinationFolder;
@OutputFile
public File getHensonNavigatorSourceFile() {
String generatedFolderName = hensonNavigatorPackageName.replace('.', '/').concat("/");
File generatedFolder = new File(destinationFolder, generatedFolderName);
generatedFolder.mkdirs();
return new File(generatedFolder, "HensonNavigator.java");
}
BaseVariant variant;
Project project;
FileCollection artifactCollection;
Logger logger;
TaskProvider<JavaCompile> javaCompiler;
HensonNavigatorGenerator hensonNavigatorGenerator;
@TaskAction
public void generateHensonNavigator() {
FileCollection variantCompileClasspath = getJarDependencies();
FileCollection uft = (FileCollectionInternal) javaCompiler.get().getSource().plus(project.fileTree(destinationFolder));
// new UnionFileCollection(
// ,(FileCollectionInternal) javaCompiler.get().getSource(), (FileCollectionInternal) project.fileTree(destinationFolder));
javaCompiler.get().setSource(uft);
logger.debug("Analyzing configuration: " + variantCompileClasspath.getFiles());
Set<String> targetActivities = new HashSet<>();
Streams.stream(variantCompileClasspath)
.forEach(
dependency -> {
logger.debug("Detected dependency: {}", dependency.getAbsolutePath());
if (dependency.getName().endsWith(".jar")) {
logger.debug("Detected navigation API dependency: {}", dependency.getName());
if (!dependency.exists()) {
logger.debug("Dependency jar doesn't exist {}", dependency.getAbsolutePath());
} else {
File file = dependency.getAbsoluteFile();
List<String> entries = getJarContent(file);
entries.forEach(
entry -> {
if (entry.matches(".*__IntentBuilder.class")) {
logger.debug("Detected intent builder: {}", entry);
String targetActivityFQN =
entry
.substring(0, entry.length() - "__IntentBuilder.class".length())
.replace('/', '.');
targetActivities.add(targetActivityFQN);
}
});
}
}
});
String hensonNavigator =
hensonNavigatorGenerator.generateHensonNavigatorClass(
targetActivities, hensonNavigatorPackageName);
destinationFolder.mkdirs();
String generatedFolderName = hensonNavigatorPackageName.replace('.', '/').concat("/");
File generatedFolder = new File(destinationFolder, generatedFolderName);
generatedFolder.mkdirs();
File generatedFile = getHensonNavigatorSourceFile();
try {
logger.debug("Generating Henson navigator in " + generatedFile.getAbsolutePath());
logger.debug(hensonNavigator);
Files.write(generatedFile.toPath(), singletonList(hensonNavigator));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private List<String> getJarContent(File file) {
final List<String> result = new ArrayList<>();
try {
if (file.getName().endsWith(".jar")) {
ZipFile zip = new ZipFile(file);
Collections.list(zip.entries()).stream().map(ZipEntry::getName).forEach(result::add);
}
} catch (IOException e) {
throw new RuntimeException(e);
}
return result;
}
}