/*
* Copyright 2010 Google Inc.
*
* 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 java.io;
public abstract class InputStream implements Closeable {
public abstract int read () throws IOException;
public int read (byte[] buf, int start, int len) throws IOException {
int end = start + len;
for (int i = start; i < end; i++) {
int r = read();
if (r == -1) {
return i == start ? -1 : i - start;
}
buf[i] = (byte)r;
}
return len;
}
public int read (byte[] buf) throws IOException {
return read(buf, 0, buf.length);
}
public void close () throws IOException {
}
public int available () {
return 0;
}
}