/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.tomcat.util.http;

import java.net.*;
import java.util.*;


/**
 * A mime type map that implements the java.net.FileNameMap interface.
 *
 * @author James Duncan Davidson [duncan@eng.sun.com]
 * @author Jason Hunter [jch@eng.sun.com]
 */
public class MimeMap implements FileNameMap {

    // Defaults - all of them are "well-known" types,
    // you can add using normal web.xml.
    
    public static Hashtable<String,String> defaultMap =
        new Hashtable<String,String>(101);
    static {
        defaultMap.put("txt", "text/plain");
        defaultMap.put("html","text/html");
        defaultMap.put("htm", "text/html");
        defaultMap.put("gif", "image/gif");
        defaultMap.put("jpg", "image/jpeg");
        defaultMap.put("jpe", "image/jpeg");
        defaultMap.put("jpeg", "image/jpeg");
        defaultMap.put("png", "image/png");
                defaultMap.put("java", "text/plain");
        defaultMap.put("body", "text/html");
        defaultMap.put("rtx", "text/richtext");
        defaultMap.put("tsv", "text/tab-separated-values");
        defaultMap.put("etx", "text/x-setext");
        defaultMap.put("ps", "application/x-postscript");
        defaultMap.put("class", "application/java");
        defaultMap.put("csh", "application/x-csh");
        defaultMap.put("sh", "application/x-sh");
        defaultMap.put("tcl", "application/x-tcl");
        defaultMap.put("tex", "application/x-tex");
        defaultMap.put("texinfo", "application/x-texinfo");
        defaultMap.put("texi", "application/x-texinfo");
        defaultMap.put("t", "application/x-troff");
        defaultMap.put("tr", "application/x-troff");
        defaultMap.put("roff", "application/x-troff");
        defaultMap.put("man", "application/x-troff-man");
        defaultMap.put("me", "application/x-troff-me");
        defaultMap.put("ms", "application/x-wais-source");
        defaultMap.put("src", "application/x-wais-source");
        defaultMap.put("zip", "application/zip");
        defaultMap.put("bcpio", "application/x-bcpio");
        defaultMap.put("cpio", "application/x-cpio");
        defaultMap.put("gtar", "application/x-gtar");
        defaultMap.put("shar", "application/x-shar");
        defaultMap.put("sv4cpio", "application/x-sv4cpio");
        defaultMap.put("sv4crc", "application/x-sv4crc");
        defaultMap.put("tar", "application/x-tar");
        defaultMap.put("ustar", "application/x-ustar");
        defaultMap.put("dvi", "application/x-dvi");
        defaultMap.put("hdf", "application/x-hdf");
        defaultMap.put("latex", "application/x-latex");
        defaultMap.put("bin", "application/octet-stream");
        defaultMap.put("oda", "application/oda");
        defaultMap.put("pdf", "application/pdf");
        defaultMap.put("ps", "application/postscript");
        defaultMap.put("eps", "application/postscript");
        defaultMap.put("ai", "application/postscript");
        defaultMap.put("rtf", "application/rtf");
        defaultMap.put("nc", "application/x-netcdf");
        defaultMap.put("cdf", "application/x-netcdf");
        defaultMap.put("cer", "application/x-x509-ca-cert");
        defaultMap.put("exe", "application/octet-stream");
        defaultMap.put("gz", "application/x-gzip");
        defaultMap.put("Z", "application/x-compress");
        defaultMap.put("z", "application/x-compress");
        defaultMap.put("hqx", "application/mac-binhex40");
        defaultMap.put("mif", "application/x-mif");
        defaultMap.put("ief", "image/ief");
        defaultMap.put("tiff", "image/tiff");
        defaultMap.put("tif", "image/tiff");
        defaultMap.put("ras", "image/x-cmu-raster");
        defaultMap.put("pnm", "image/x-portable-anymap");
        defaultMap.put("pbm", "image/x-portable-bitmap");
        defaultMap.put("pgm", "image/x-portable-graymap");
        defaultMap.put("ppm", "image/x-portable-pixmap");
        defaultMap.put("rgb", "image/x-rgb");
        defaultMap.put("xbm", "image/x-xbitmap");
        defaultMap.put("xpm", "image/x-xpixmap");
        defaultMap.put("xwd", "image/x-xwindowdump");
        defaultMap.put("au", "audio/basic");
        defaultMap.put("snd", "audio/basic");
        defaultMap.put("aif", "audio/x-aiff");
        defaultMap.put("aiff", "audio/x-aiff");
        defaultMap.put("aifc", "audio/x-aiff");
        defaultMap.put("wav", "audio/x-wav");
        defaultMap.put("mpeg", "video/mpeg");
        defaultMap.put("mpg", "video/mpeg");
        defaultMap.put("mpe", "video/mpeg");
        defaultMap.put("qt", "video/quicktime");
        defaultMap.put("mov", "video/quicktime");
        defaultMap.put("avi", "video/x-msvideo");
        defaultMap.put("movie", "video/x-sgi-movie");
        defaultMap.put("avx", "video/x-rad-screenplay");
        defaultMap.put("wrl", "x-world/x-vrml");
        defaultMap.put("mpv2", "video/mpeg2");
        
        /* Add XML related MIMEs */
        
        defaultMap.put("xml", "text/xml");
        defaultMap.put("xsl", "text/xml");        
        defaultMap.put("svg", "image/svg+xml");
        defaultMap.put("svgz", "image/svg+xml");
        defaultMap.put("wbmp", "image/vnd.wap.wbmp");
        defaultMap.put("wml", "text/vnd.wap.wml");
        defaultMap.put("wmlc", "application/vnd.wap.wmlc");
        defaultMap.put("wmls", "text/vnd.wap.wmlscript");
        defaultMap.put("wmlscriptc", "application/vnd.wap.wmlscriptc");
    }
    

    private Hashtable<String,String> map = new Hashtable<String,String>();

    public void addContentType(String extn, String type) {
        map.put(extn, type.toLowerCase());
    }

    public Enumeration getExtensions() {
        return map.keys();
    }

    public String getContentType(String extn) {
        String type = (String)map.get(extn.toLowerCase());
        if( type == null ) type=(String)defaultMap.get( extn );
        return type;
    }

    public void removeContentType(String extn) {
        map.remove(extn.toLowerCase());
    }

    /** Get extension of file, without fragment id
     */
    public static String getExtension( String fileName ) {
        // play it safe and get rid of any fragment id
        // that might be there
        int length=fileName.length();
        
        int newEnd = fileName.lastIndexOf('#');
        if( newEnd== -1 ) newEnd=length;
        // Instead of creating a new string.
        //         if (i != -1) {
        //             fileName = fileName.substring(0, i);
        //         }
        int i = fileName.lastIndexOf('.', newEnd );
        if (i != -1) {
             return  fileName.substring(i + 1, newEnd );
        } else {
            // no extension, no content type
            return null;
        }
    }
    
    public String getContentTypeFor(String fileName) {
        String extn=getExtension( fileName );
        if (extn!=null) {
            return getContentType(extn);
        } else {
            // no extension, no content type
            return null;
        }
    }

}
