gradle-master/subprojects/core/src/main/java/org/gradle/internal/xml/SimpleXmlWriter.java
/*
 * Copyright 2012 the original author or authors.
 *
 * 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.gradle.internal.xml;

import java.io.*;

/**
 * <p>A streaming XML writer.</p>
 */
public class SimpleXmlWriter extends SimpleMarkupWriter {
    /**
     * Constructs a writer with the given output.
     *
     * @param output The output, should be unbuffered, as this class performs buffering
     */
    public SimpleXmlWriter(OutputStream output) throws IOException {
        this(output, null);
    }

    /**
     * Constructs a writer with the given output.
     *
     * @param output The output, should be unbuffered, as this class performs buffering
     */
    public SimpleXmlWriter(OutputStream output, String indent) throws IOException {
        this(new BufferedWriter(new OutputStreamWriter(output, "UTF-8")), indent, "UTF-8");
    }

    /**
     * Constructs a writer with the given output.
     *
     * @param writer The output, should be buffered.
     */
    public SimpleXmlWriter(Writer writer, String indent, String encoding) throws IOException {
        super(writer, indent);
        writeXmlDeclaration(encoding);
    }

    private void writeXmlDeclaration(String encoding) throws IOException {
        writeRaw("<?xml version=\"1.0\" encoding=\"");
        writeRaw(encoding);
        writeRaw("\"?>");
    }
}
