trunk/core/src/main/java/org/apache/struts2/sitegraph/model/IndentWriter.java

/*
 * $Id$
 *
 * Copyright 2006 The Apache Software Foundation.
 *
 * 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 org.apache.struts2.sitegraph.model;

import java.io.IOException;
import java.io.Writer;

/**
 */
public class IndentWriter extends Writer {
    Writer writer;

    public IndentWriter(Writer writer) {
        this.writer = writer;
    }

    public void close() throws IOException {
        writer.close();
    }

    public void flush() throws IOException {
        writer.flush();
    }

    public void write(String str) throws IOException {
        write(str, false);
    }

    public void write(String str, boolean noIndent) throws IOException {
        if (!noIndent) {
            str = "    " + str;
        }

        if (writer instanceof IndentWriter) {
            ((IndentWriter) writer).write(str, false);
        } else {
            writer.write(str + "\n");
        }
    }

    public void write(char cbuf[], int off, int len) throws IOException {
        writer.write(cbuf, off, len);
    }
}