diff options
Diffstat (limited to 'framework/src/maven/apache-maven-3.3.3/maven-embedder/src/main/java/org/apache/maven/cli/transfer/ConsoleMavenTransferListener.java')
-rw-r--r-- | framework/src/maven/apache-maven-3.3.3/maven-embedder/src/main/java/org/apache/maven/cli/transfer/ConsoleMavenTransferListener.java | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/framework/src/maven/apache-maven-3.3.3/maven-embedder/src/main/java/org/apache/maven/cli/transfer/ConsoleMavenTransferListener.java b/framework/src/maven/apache-maven-3.3.3/maven-embedder/src/main/java/org/apache/maven/cli/transfer/ConsoleMavenTransferListener.java new file mode 100644 index 00000000..46725024 --- /dev/null +++ b/framework/src/maven/apache-maven-3.3.3/maven-embedder/src/main/java/org/apache/maven/cli/transfer/ConsoleMavenTransferListener.java @@ -0,0 +1,133 @@ +package org.apache.maven.cli.transfer; + +/* + * 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 java.io.PrintStream; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; + +import org.eclipse.aether.transfer.TransferCancelledException; +import org.eclipse.aether.transfer.TransferEvent; +import org.eclipse.aether.transfer.TransferResource; + +/** + * Console download progress meter. + * + * @author <a href="mailto:brett@apache.org">Brett Porter</a> + */ +public class ConsoleMavenTransferListener + extends AbstractMavenTransferListener +{ + + private Map<TransferResource, Long> downloads = new ConcurrentHashMap<TransferResource, Long>(); + + private int lastLength; + + public ConsoleMavenTransferListener( PrintStream out ) + { + super( out ); + } + + @Override + public void transferProgressed( TransferEvent event ) + throws TransferCancelledException + { + TransferResource resource = event.getResource(); + downloads.put( resource, event.getTransferredBytes() ); + + StringBuilder buffer = new StringBuilder( 64 ); + + for ( Map.Entry<TransferResource, Long> entry : downloads.entrySet() ) + { + long total = entry.getKey().getContentLength(); + Long complete = entry.getValue(); + // NOTE: This null check guards against http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6312056 + if ( complete != null ) + { + buffer.append( getStatus( complete, total ) ).append( " " ); + } + } + + int pad = lastLength - buffer.length(); + lastLength = buffer.length(); + pad( buffer, pad ); + buffer.append( '\r' ); + + out.print( buffer.toString() ); + } + + private String getStatus( long complete, long total ) + { + if ( total >= 1024 ) + { + return toKB( complete ) + "/" + toKB( total ) + " KB "; + } + else if ( total >= 0 ) + { + return complete + "/" + total + " B "; + } + else if ( complete >= 1024 ) + { + return toKB( complete ) + " KB "; + } + else + { + return complete + " B "; + } + } + + private void pad( StringBuilder buffer, int spaces ) + { + String block = " "; + while ( spaces > 0 ) + { + int n = Math.min( spaces, block.length() ); + buffer.append( block, 0, n ); + spaces -= n; + } + } + + @Override + public void transferSucceeded( TransferEvent event ) + { + transferCompleted( event ); + + super.transferSucceeded( event ); + } + + @Override + public void transferFailed( TransferEvent event ) + { + transferCompleted( event ); + + super.transferFailed( event ); + } + + private void transferCompleted( TransferEvent event ) + { + downloads.remove( event.getResource() ); + + StringBuilder buffer = new StringBuilder( 64 ); + pad( buffer, lastLength ); + buffer.append( '\r' ); + out.print( buffer.toString() ); + } + +} |