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								.mvn/wrapper/MavenWrapperDownloader.java
									
									
									
									
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								.mvn/wrapper/MavenWrapperDownloader.java
									
									
									
									
										vendored
									
									
										Normal file
									
								
							| @ -0,0 +1,118 @@ | ||||
| /* | ||||
|  * Copyright 2012-2019 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 | ||||
|  * | ||||
|  *      https://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 java.net.*; | ||||
| import java.io.*; | ||||
| import java.nio.channels.*; | ||||
| import java.util.Properties; | ||||
|  | ||||
| public class MavenWrapperDownloader { | ||||
|  | ||||
|     private static final String WRAPPER_VERSION = "0.5.5"; | ||||
|     /** | ||||
|      * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided. | ||||
|      */ | ||||
|     private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/" | ||||
|             + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar"; | ||||
|  | ||||
|     /** | ||||
|      * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to | ||||
|      * use instead of the default one. | ||||
|      */ | ||||
|     private static final String MAVEN_WRAPPER_PROPERTIES_PATH = | ||||
|             ".mvn/wrapper/maven-wrapper.properties"; | ||||
|  | ||||
|     /** | ||||
|      * Path where the maven-wrapper.jar will be saved to. | ||||
|      */ | ||||
|     private static final String MAVEN_WRAPPER_JAR_PATH = | ||||
|             ".mvn/wrapper/maven-wrapper.jar"; | ||||
|  | ||||
|     /** | ||||
|      * Name of the property which should be used to override the default download url for the wrapper. | ||||
|      */ | ||||
|     private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl"; | ||||
|  | ||||
|     public static void main(String args[]) { | ||||
|         System.out.println("- Downloader started"); | ||||
|         File baseDirectory = new File(args[0]); | ||||
|         System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath()); | ||||
|  | ||||
|         // If the maven-wrapper.properties exists, read it and check if it contains a custom | ||||
|         // wrapperUrl parameter. | ||||
|         File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH); | ||||
|         String url = DEFAULT_DOWNLOAD_URL; | ||||
|         if (mavenWrapperPropertyFile.exists()) { | ||||
|             FileInputStream mavenWrapperPropertyFileInputStream = null; | ||||
|             try { | ||||
|                 mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile); | ||||
|                 Properties mavenWrapperProperties = new Properties(); | ||||
|                 mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream); | ||||
|                 url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url); | ||||
|             } catch (IOException e) { | ||||
|                 System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'"); | ||||
|             } finally { | ||||
|                 try { | ||||
|                     if (mavenWrapperPropertyFileInputStream != null) { | ||||
|                         mavenWrapperPropertyFileInputStream.close(); | ||||
|                     } | ||||
|                 } catch (IOException e) { | ||||
|                     // Ignore ... | ||||
|                 } | ||||
|             } | ||||
|         } | ||||
|         System.out.println("- Downloading from: " + url); | ||||
|  | ||||
|         File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH); | ||||
|         if (!outputFile.getParentFile().exists()) { | ||||
|             if (!outputFile.getParentFile().mkdirs()) { | ||||
|                 System.out.println( | ||||
|                         "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'"); | ||||
|             } | ||||
|         } | ||||
|         System.out.println("- Downloading to: " + outputFile.getAbsolutePath()); | ||||
|         try { | ||||
|             downloadFileFromURL(url, outputFile); | ||||
|             System.out.println("Done"); | ||||
|             System.exit(0); | ||||
|         } catch (Throwable e) { | ||||
|             System.out.println("- Error downloading"); | ||||
|             e.printStackTrace(); | ||||
|             System.exit(1); | ||||
|         } | ||||
|     } | ||||
|  | ||||
|     private static void downloadFileFromURL(String urlString, File destination) throws Exception { | ||||
|         if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) { | ||||
|             String username = System.getenv("MVNW_USERNAME"); | ||||
|             char[] password = System.getenv("MVNW_PASSWORD").toCharArray(); | ||||
|             Authenticator.setDefault(new Authenticator() { | ||||
|                 @Override | ||||
|                 protected PasswordAuthentication getPasswordAuthentication() { | ||||
|                     return new PasswordAuthentication(username, password); | ||||
|                 } | ||||
|             }); | ||||
|         } | ||||
|         URL website = new URL(urlString); | ||||
|         ReadableByteChannel rbc; | ||||
|         rbc = Channels.newChannel(website.openStream()); | ||||
|         FileOutputStream fos = new FileOutputStream(destination); | ||||
|         fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE); | ||||
|         fos.close(); | ||||
|         rbc.close(); | ||||
|     } | ||||
|  | ||||
| } | ||||
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