package com.alibaba.dubbo.rpc.protocol.thrift.io;
import java.io.IOException;
import java.io.InputStream;
/**
* @author <a href="mailto:gang.lvg@alibaba-inc.com">kimi</a>
*/
public class InputStreamWrapper extends InputStream {
private InputStream is;
public InputStreamWrapper(InputStream is) {
if (is == null) {
throw new NullPointerException("is == null");
}
this.is = is;
}
@Override
public int read(byte[] b) throws IOException {
if (is.available() >= b.length) {
return is.read(b);
} else {
return -1;
}
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
if (is.available() >= len) {
return is.read(b, off, len);
} else {
return -1;
}
}
@Override
public long skip(long n) throws IOException {
return is.skip(n);
}
@Override
public int available() throws IOException {
return is.available();
}
@Override
public void close() throws IOException {
is.close();
}
@Override
public void mark(int readlimit) {
is.mark(readlimit);
}
@Override
public void reset() throws IOException {
is.reset();
}
@Override
public boolean markSupported() {
return is.markSupported();
}
@Override
public int read() throws IOException {
if (is.available() >= 1) {
return is.read();
}
return -1;
}
}