| package org.apache.maven.plugin.assembly.utils; |
| |
| /* |
| * 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.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * @author Kristian Rosenvold |
| */ |
| class LinuxLineFeedInputStream |
| extends InputStream |
| { |
| |
| private boolean slashNSeen = false; |
| |
| private boolean slashRSeen = false; |
| |
| private boolean eofSeen = false; |
| |
| private final InputStream target; |
| |
| private final boolean ensureLineFeedAtEndOfFile; |
| |
| public LinuxLineFeedInputStream( InputStream in, boolean ensureLineFeedAtEndOfFile ) |
| { |
| this.target = in; |
| this.ensureLineFeedAtEndOfFile = ensureLineFeedAtEndOfFile; |
| } |
| |
| private int readWithUpdate() |
| throws IOException |
| { |
| final int target = this.target.read(); |
| eofSeen = target == -1; |
| if ( eofSeen ) |
| { |
| return target; |
| } |
| slashNSeen = target == '\n'; |
| slashRSeen = target == '\r'; |
| return target; |
| } |
| |
| @Override |
| public int read() |
| throws IOException |
| { |
| boolean prevWasSlashR = slashRSeen; |
| if ( eofSeen ) |
| { |
| return eofGame( prevWasSlashR ); |
| } |
| else |
| { |
| int target = readWithUpdate(); |
| if ( eofSeen ) |
| { |
| return eofGame( prevWasSlashR ); |
| } |
| if ( slashRSeen ) |
| { |
| return '\n'; |
| } |
| |
| if ( prevWasSlashR && slashNSeen ) |
| { // Lone /r |
| return read(); |
| } |
| return target; |
| } |
| } |
| |
| private int eofGame( boolean previousWasSlashR ) |
| { |
| if ( previousWasSlashR || !ensureLineFeedAtEndOfFile ) |
| { |
| return -1; |
| } |
| if ( !slashNSeen ) |
| { |
| slashNSeen = true; |
| return '\n'; |
| } |
| else |
| { |
| return -1; |
| } |
| } |
| |
| @Override |
| public void close() |
| throws IOException |
| { |
| super.close(); |
| target.close(); |
| } |
| |
| @Override |
| public synchronized void mark( int readlimit ) |
| { |
| throw new UnsupportedOperationException( "Mark not implemented yet" ); |
| } |
| } |