content: /**
   * Copyright (C) 2010-2016 eBusiness Information, Excilys Group
   * Copyright (C) 2016-2020 the AndroidAnnotations project
   *
   * 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.androidannotations.internal.helper;
  
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.net.URI;
  import java.net.URISyntaxException;
  
  import javax.annotation.processing.Filer;
  import javax.annotation.processing.ProcessingEnvironment;
  import javax.tools.FileObject;
  import javax.tools.StandardLocation;
  
  public final class FileHelper {
  
  	private FileHelper() {
  	}
  
  	public static File findRootProject(ProcessingEnvironment processingEnv) throws FileNotFoundException {
  		FileHolder rootProjectHolder = findRootProjectHolder(processingEnv);
  		return rootProjectHolder.projectRoot;
  	}
  
  	/**
  	 * We use a dirty trick to find the AndroidManifest.xml file, since it's not
  	 * available in the classpath. The idea is quite simple : create a fake class
  	 * file, retrieve its URI, and start going up in parent folders to find the
  	 * AndroidManifest.xml file. Any better solution will be appreciated.
  	 */
  	public static FileHolder findRootProjectHolder(ProcessingEnvironment processingEnv) throws FileNotFoundException {
  		FileHolder rootProjectHolder = findKaptRootProjectHolder(processingEnv);
  
  		if (rootProjectHolder != null) {
  			return rootProjectHolder;
  		}
  
  		Filer filer = processingEnv.getFiler();
  
  		FileObject dummySourceFile;
  		try {
  			dummySourceFile = filer.createResource(StandardLocation.SOURCE_OUTPUT, "", "dummy" + System.currentTimeMillis());
  		} catch (IOException ignored) {
  			throw new FileNotFoundException();
  		}
  
  		return createFileHolder(dummySourceFile.toUri().toString());
  	}
  
  	private static FileHolder createFileHolder(String dummySourceFilePath) throws FileNotFoundException {
  		if (dummySourceFilePath.startsWith("file:")) {
  			if (!dummySourceFilePath.startsWith("file://")) {
  				dummySourceFilePath = "file://" + dummySourceFilePath.substring("file:".length());
  			}
  		} else {
  			dummySourceFilePath = "file://" + dummySourceFilePath;
  		}
  
  		URI cleanURI;
  		try {
  			cleanURI = new URI(dummySourceFilePath);
  		} catch (URISyntaxException e) {
  			throw new FileNotFoundException();
  		}
  
  		File dummyFile = new File(cleanURI);
  		File sourcesGenerationFolder = dummyFile.getParentFile();
  		File projectRoot = sourcesGenerationFolder.getParentFile();
  
  		return new FileHolder(dummySourceFilePath, sourcesGenerationFolder, projectRoot);
  	}
  
  	private static FileHolder findKaptRootProjectHolder(ProcessingEnvironment processingEnv) throws FileNotFoundException {
  		String kaptFolderOption = processingEnv.getOptions().get("kapt.kotlin.generated");
  
  		if (kaptFolderOption == null) {
  			return null;
  		}
  
  		String dummySourceFile = kaptFolderOption.replace("kaptKotlin", "kapt") + File.separator + "dummy";
  		String dummySourceFilePath = new File(dummySourceFile).toURI().toString();
  
  		return createFileHolder(dummySourceFilePath);
  	}
  
  	public static File resolveOutputDirectory(ProcessingEnvironment processingEnv) throws FileNotFoundException {
  		File rootProject = FileHelper.findRootProject(processingEnv);
  
  		// Target folder - Maven
  		File targetFolder = new File(rootProject, "target");
  		if (targetFolder.isDirectory() && targetFolder.canWrite()) {
  			return targetFolder;
  		}
  
  		// Build folder - Gradle
  		File buildFolder = new File(rootProject, "build");
  		if (buildFolder.isDirectory() && buildFolder.canWrite()) {
  			return buildFolder;
  		}
  
  		// Bin folder - Eclipse
  		File binFolder = new File(rootProject, "bin");
  		if (binFolder.isDirectory() && binFolder.canWrite()) {
  			return binFolder;
  		}
  
  		// Fallback to projet root folder
  		return rootProject;
  	}
  
  	static class FileHolder {
  		String dummySourceFilePath;
  		File sourcesGenerationFolder;
  		File projectRoot;
  
  		FileHolder(String dummySourceFilePath, File sourcesGenerationFolder, File projectRoot) {
  			this.dummySourceFilePath = dummySourceFilePath;
  			this.sourcesGenerationFolder = sourcesGenerationFolder;
  			this.projectRoot = projectRoot;
  		}
  	}
  
  }
  