| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @author max |
| */ |
| package com.intellij.util.io; |
| |
| import com.intellij.openapi.util.io.BufferExposingByteArrayOutputStream; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| public class ReplicatorInputStream extends InputStream { |
| private final BufferExposingByteArrayOutputStream myTarget; |
| private final InputStream mySource; |
| private int markedSize; |
| |
| public ReplicatorInputStream(final InputStream source, final BufferExposingByteArrayOutputStream target) { |
| mySource = source; |
| myTarget = target; |
| } |
| |
| @Override |
| public int read() throws IOException { |
| final int b = mySource.read(); |
| if (b == -1) return -1; |
| myTarget.write(b); |
| return b; |
| } |
| |
| @Override |
| public synchronized void mark(final int readlimit) { |
| mySource.mark(readlimit); |
| markedSize = myTarget.size(); |
| } |
| |
| @Override |
| public boolean markSupported() { |
| return mySource.markSupported(); |
| } |
| |
| @Override |
| public synchronized void reset() throws IOException { |
| mySource.reset(); |
| myTarget.backOff(myTarget.size() - markedSize); |
| markedSize = 0; |
| } |
| |
| @Override |
| public int read(@NotNull final byte[] b) throws IOException { |
| return read(b, 0, b.length); |
| } |
| |
| @Override |
| public int read(@NotNull final byte[] b, final int off, final int len) throws IOException { |
| final int count = mySource.read(b, off, len); |
| if (count < 0) return count; |
| myTarget.write(b, off, count); |
| return count; |
| } |
| |
| @Override |
| public long skip(final long n) throws IOException { |
| final int skipped = read(new byte[(int)n]); |
| return skipped; |
| } |
| |
| @Override |
| public int available() throws IOException { |
| return mySource.available(); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| mySource.close(); |
| myTarget.close(); |
| } |
| |
| public int getBytesRead() { |
| return myTarget.size(); |
| } |
| } |