001    /*
002     * Copyright (C) 2009 the original author(s).
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.fusesource.jansi;
018    
019    import java.io.OutputStream;
020    import java.io.PrintWriter;
021    import java.io.Writer;
022    import java.util.Locale;
023    
024    import static org.fusesource.jansi.AnsiRenderer.*;
025    
026    /**
027     * Print writer which supports automatic ANSI color rendering via {@link AnsiRenderer}.
028     *
029     * @author <a href="mailto:jason@planet57.com">Jason Dillon</a>
030     * @author <a href="http://hiramchirino.com">Hiram Chirino</a>
031     * @since 1.1
032     */
033    public class AnsiRenderWriter
034        extends PrintWriter
035    {
036    
037        public AnsiRenderWriter(final OutputStream out) {
038            super(out);
039        }
040    
041        public AnsiRenderWriter(final OutputStream out, final boolean autoFlush) {
042            super(out, autoFlush);
043        }
044    
045        public AnsiRenderWriter(final Writer out) {
046            super(out);
047        }
048    
049        public AnsiRenderWriter(final Writer out, final boolean autoFlush) {
050            super(out, autoFlush);
051        }
052    
053        @Override
054        public void write(final String s) {
055            if (test(s)) {
056                super.write(render(s));
057            }
058            else {
059                super.write(s);
060            }
061        }
062    
063        //
064        // Need to prevent partial output from being written while formatting or we will get rendering exceptions
065        //
066    
067        @Override
068        public PrintWriter format(final String format, final Object... args) {
069            print(String.format(format, args));
070            return this;
071        }
072    
073        @Override
074        public PrintWriter format(final Locale l, final String format, final Object... args) {
075            print(String.format(l, format, args));
076            return this;
077        }
078    }