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/*
 * Copyright 2012-2013 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 skinny.logging.ansi;

/**
 * An ANSI encodable element.
 *
 * @author Phillip Webb
 */
public interface AnsiElement {

    public static final AnsiElement NORMAL = new DefaultAnsiElement("0");

    public static final AnsiElement BOLD = new DefaultAnsiElement("1");

    public static final AnsiElement FAINT = new DefaultAnsiElement("2");

    public static final AnsiElement ITALIC = new DefaultAnsiElement("3");

    public static final AnsiElement UNDERLINE = new DefaultAnsiElement("4");

    public static final AnsiElement BLACK = new DefaultAnsiElement("30");

    public static final AnsiElement RED = new DefaultAnsiElement("31");

    public static final AnsiElement GREEN = new DefaultAnsiElement("32");

    public static final AnsiElement YELLOW = new DefaultAnsiElement("33");

    public static final AnsiElement BLUE = new DefaultAnsiElement("34");

    public static final AnsiElement MAGENTA = new DefaultAnsiElement("35");

    public static final AnsiElement CYAN = new DefaultAnsiElement("36");

    public static final AnsiElement WHITE = new DefaultAnsiElement("37");

    public static final AnsiElement DEFAULT = new DefaultAnsiElement("39");

    /**
     * @return the ANSI escape code
     */
    @Override
    public String toString();

    /**
     * Internal default {@link AnsiElement} implementation.
     */
    static class DefaultAnsiElement implements AnsiElement {

        private final String code;

        public DefaultAnsiElement(String code) {
            this.code = code;
        }

        @Override
        public String toString() {
            return this.code;
        }

    }

}