| /* |
| * Copyright 2000-2009 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. |
| */ |
| package com.intellij.util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| public class ScrambledInputStream extends InputStream{ |
| private static final int MASK = ScrambledOutputStream.MASK; |
| private final InputStream myOriginalStream; |
| |
| public ScrambledInputStream(InputStream originalStream) { |
| myOriginalStream = originalStream; |
| } |
| |
| public int read() throws IOException { |
| int b = myOriginalStream.read(); |
| if (b == -1) return -1; |
| return b ^ MASK; |
| } |
| |
| public int read(byte[] b, int off, int len) throws IOException { |
| int read = myOriginalStream.read(b, off, len); |
| for(int i = 0; i < read; i++){ |
| b[off + i] ^= MASK; |
| } |
| return read; |
| } |
| |
| public long skip(long n) throws IOException { |
| return myOriginalStream.skip(n); |
| } |
| |
| public int available() throws IOException { |
| return myOriginalStream.available(); |
| } |
| |
| public void close() throws IOException { |
| myOriginalStream.close(); |
| } |
| |
| public synchronized void mark(int readlimit) { |
| myOriginalStream.mark(readlimit); |
| } |
| |
| public synchronized void reset() throws IOException { |
| myOriginalStream.reset(); |
| } |
| |
| public boolean markSupported() { |
| return myOriginalStream.markSupported(); |
| } |
| } |