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Groovy: A powerful, dynamic language for the JVM
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 groovy.text.markup;
import java.io.IOException;
import java.io.Writer;
/**
* A writer which delegates to another writer and supports an additional indenting level.
*/
public class DelegatingIndentWriter extends Writer {
public static final String SPACES = " ";
public static final String TAB = "\t";
private final Writer delegate;
private final String indentString;
private int level;
public DelegatingIndentWriter(final Writer delegate) {
this(delegate, SPACES);
}
public DelegatingIndentWriter(final Writer delegate, final String indentString) {
this.delegate = delegate;
this.indentString = indentString;
}
@Override
public void write(final int c) throws IOException {
delegate.write(c);
}
@Override
public void write(final char[] cbuf) throws IOException {
delegate.write(cbuf);
}
@Override
public void write(final char[] cbuf, final int off, final int len) throws IOException {
delegate.write(cbuf, off, len);
}
@Override
public void write(final String str) throws IOException {
delegate.write(str);
}
@Override
public void write(final String str, final int off, final int len) throws IOException {
delegate.write(str, off, len);
}
@Override
public Writer append(final CharSequence csq) throws IOException {
return delegate.append(csq);
}
@Override
public Writer append(final CharSequence csq, final int start, final int end) throws IOException {
return delegate.append(csq, start, end);
}
@Override
public Writer append(final char c) throws IOException {
return delegate.append(c);
}
@Override
public void flush() throws IOException {
delegate.flush();
}
@Override
public void close() throws IOException {
delegate.close();
}
public int next() {
return ++level;
}
public int previous() {
return --level;
}
public void writeIndent() throws IOException {
for (int i=0;i