/*
 * Copyright 2010 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.external.javadoc.internal;

import org.gradle.util.CollectionUtils;

import java.io.IOException;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

/**
 * A {@link org.gradle.external.javadoc.JavadocOptionFileOption} which represents the -groups command line
 * option.
 */
public class GroupsJavadocOptionFileOption extends AbstractJavadocOptionFileOption<Map<String, List<String>>> {
    public GroupsJavadocOptionFileOption(String option) {
        super(option, new LinkedHashMap<String, List<String>>());
    }

    public void write(JavadocOptionFileWriterContext writerContext) throws IOException {
        if (value != null && !value.isEmpty()) {
            for (final String group : value.keySet()) {
                final List<String> groupPackages = value.get(group);

                writerContext
                    .writeOptionHeader(option)
                    .write(
                        new StringBuffer()
                            .append("\"")
                            .append(group)
                            .append("\"")
                            .toString())
                    .write(" ")
                    .write(
                        new StringBuffer()
                            .append("\"")
                            .append(CollectionUtils.join(":", groupPackages))
                            .append("\"")
                            .toString())
                    .newLine();
            }
        }
    }
}

@@ -1545,524 +1545,142 @@
 ite(
-%0A                        new StringBuffer()%0A                            .append(%22%5C%22%22)%0A                            .append(group)%0A                            .append(%22%5C%22%22)%0A                            .toString())%0A                    .write(%22 %22)%0A                    .write(%0A                        new StringBuffer()%0A                            .append(%22%5C%22%22)%0A                            .append(CollectionUtils.join(%22:%22, groupPackages))%0A                            .append(%22%5C%22%22)%0A                            .toString()
+%22%5C%22%22 + group + %22%5C%22%22)%0A                    .write(%22 %22)%0A                    .write(%22%5C%22%22 + CollectionUtils.join(%22:%22, groupPackages) + %22%5C%22%22
 )%0A  

StringBuffer can be replaced with String