content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * 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.android.layoutlib.bridge.util;
  
  import com.android.tools.layoutlib.annotations.NotNull;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.io.InputStream;
  
  /**
   * Simpler wrapper around FileInputStream. This is used when the input stream represent
   * not a normal bitmap but a nine patch.
   * This is useful when the InputStream is created in a method but used in another that needs
   * to know whether this is 9-patch or not, such as BitmapFactory.
   */
  public class NinePatchInputStream extends InputStream {
      private final InputStream mDelegate;
      private boolean mFakeMarkSupport = true;
  
      public NinePatchInputStream(File file) throws FileNotFoundException {
          mDelegate = new FileInputStream(file);
      }
  
      public NinePatchInputStream(@NotNull InputStream stream) {
          mDelegate = stream;
      }
  
      @Override
      public boolean markSupported() {
          // this is needed so that BitmapFactory doesn't wrap this in a BufferedInputStream.
          return mFakeMarkSupport || mDelegate.markSupported();
      }
  
      public void disableFakeMarkSupport() {
          // disable fake mark support so that in case codec actually try to use them
          // we don't lie to them.
          mFakeMarkSupport = false;
      }
  
      @Override
      public int read() throws IOException {
          return mDelegate.read();
      }
  
      @Override
      public int read(byte[] b) throws IOException {
          return mDelegate.read(b);
      }
  
      @Override
      public int read(byte[] b, int off, int len) throws IOException {
          return mDelegate.read(b, off, len);
      }
  
      @Override
      public long skip(long n) throws IOException {
          return mDelegate.skip(n);
      }
  
      @Override
      public int available() throws IOException {
          return mDelegate.available();
      }
  
      @Override
      public void close() throws IOException {
          mDelegate.close();
      }
  
      @Override
      public void mark(int readlimit) {
          mDelegate.mark(readlimit);
      }
  
      @Override
      public void reset() throws IOException {
          mDelegate.reset();
      }
  }
  