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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.io.reader;
import com.yahoo.api.annotations.Beta;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.nio.CharBuffer;
import java.util.List;
/**
* A reader with a name. All reader methods are delegated to the wrapped reader.
*
* @author bratseth
*/
@Beta
public class NamedReader extends Reader {
private final String name;
private final Reader reader;
public NamedReader(String name, Reader reader) {
this.name = name;
this.reader = reader;
}
public String getName() { return name; }
public Reader getReader() { return reader; }
/** Returns the name */
@Override
public String toString() {
return name;
}
// The rest is reader method implementations which delegates to the wrapped reader
public static Reader nullReader() { return new NamedReader("nullReader", Reader.nullReader()); }
@Override
public int read(CharBuffer charBuffer) throws IOException { return reader.read(charBuffer); }
@Override
public int read() throws IOException { return reader.read(); }
@Override
public int read(char[] chars) throws IOException { return reader.read(chars); }
@Override
public int read(char[] chars, int i, int i1) throws IOException { return reader.read(chars,i,i1); }
@Override
public long skip(long l) throws IOException { return reader.skip(l); }
@Override
public boolean ready() throws IOException { return reader.ready(); }
@Override
public boolean markSupported() { return reader.markSupported(); }
@Override
public void mark(int i) throws IOException { reader.mark(i); }
@Override
public void reset() throws IOException { reader.reset(); }
@Override
public void close() throws IOException { reader.close(); }
@Override
public long transferTo(Writer out) throws IOException { return reader.transferTo(out); }
/** Convenience method for closing a list of readers. Does nothing if the given reader list is null. */
public static void closeAll(List<NamedReader> readers) {
if (readers==null) return;
for (Reader reader : readers) {
try {
reader.close();
}
catch (IOException e) {
// Nothing to do about it
}
}
}
}
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