libjava/classpath/java/net/MimeTypeMapper.java

   1 /* MimeTypeMapper.java -- A class for mapping file names to MIME types
   2    Copyright (C) 1998 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 package java.net;
  39
  40 import gnu.classpath.SystemProperties;
  41
  42 import java.io.FileReader;
  43 import java.io.IOException;
  44 import java.io.LineNumberReader;
  45 import java.util.Hashtable;
  46 import java.util.Iterator;
  47 import java.util.Map;
  48 import java.util.NoSuchElementException;
  49 import java.util.StringTokenizer;
  50 import java.util.TreeMap;
  51
  52
  53 /**
  54  * This non-public class is used to implement the FileNameMap interface
  55  * which defines a mechanism for mapping filenames to MIME types.
  56  *
  57  * @version 0.5
  58  *
  59  * @author Aaron M. Renn (arenn@urbanophile.com)
  60  */
  61 class MimeTypeMapper implements FileNameMap
  62 {
  63   /**
  64    * This array of strings is used to identify a MIME type based on a file
  65    * extension.  This is list is based on the Apache mime.types file.
  66    */
  67   protected static final String[][] mime_strings =
  68     {
  69        { "ai", "application/postscript" }
  70      , { "aif", "audio/x-aiff" }
  71      , { "aifc", "audio/x-aiff" }
  72      , { "aiff", "audio/x-aiff" }
  73      , { "asc", "text/plain" }
  74      , { "au", "audio/basic" }
  75      , { "avi", "video/x-msvideo" }
  76      , { "bcpio", "application/x-bcpio" }
  77      , { "bin", "application/octet-stream" }
  78      , { "bmp", "image/bmp" }
  79      , { "bz2", "application/x-bzip2" }
  80      , { "cdf", "application/x-netcdf" }
  81      , { "chrt", "application/x-kchart" }
  82      , { "class", "application/octet-stream" }
  83      , { "cpio", "application/x-cpio" }
  84      , { "cpt", "application/mac-compactpro" }
  85      , { "csh", "application/x-csh" }
  86      , { "css", "text/css" }
  87      , { "dcr", "application/x-director" }
  88      , { "dir", "application/x-director" }
  89      , { "djv", "image/vnd.djvu" }
  90      , { "djvu", "image/vnd.djvu" }
  91      , { "dll", "application/octet-stream" }
  92      , { "dms", "application/octet-stream" }
  93      , { "doc", "application/msword" }
  94      , { "dvi", "application/x-dvi" }
  95      , { "dxr", "application/x-director" }
  96      , { "eps", "application/postscript" }
  97      , { "etx", "text/x-setext" }
  98      , { "exe", "application/octet-stream" }
  99      , { "ez", "application/andrew-inset" }
 100      , { "gif", "image/gif" }
 101      , { "gtar", "application/x-gtar" }
 102      , { "gz", "application/x-gzip" }
 103      , { "hdf", "application/x-hdf" }
 104      , { "hqx", "application/mac-binhex40" }
 105      , { "htm", "text/html" }
 106      , { "html", "text/html" }
 107      , { "ice", "x-conference/x-cooltalk" }
 108      , { "ief", "image/ief" }
 109      , { "iges", "model/iges" }
 110      , { "igs", "model/iges" }
 111      , { "img", "application/octet-stream" }
 112      , { "iso", "application/octet-stream" }
 113      , { "jpe", "image/jpeg" }
 114      , { "jpeg", "image/jpeg" }
 115      , { "jpg", "image/jpeg" }
 116      , { "js", "application/x-javascript" }
 117      , { "kar", "audio/midi" }
 118      , { "kil", "application/x-killustrator" }
 119      , { "kpr", "application/x-kpresenter" }
 120      , { "kpt", "application/x-kpresenter" }
 121      , { "ksp", "application/x-kspread" }
 122      , { "kwd", "application/x-kword" }
 123      , { "kwt", "application/x-kword" }
 124      , { "latex", "application/x-latex" }
 125      , { "lha", "application/octet-stream" }
 126      , { "lzh", "application/octet-stream" }
 127      , { "m3u", "audio/x-mpegurl" }
 128      , { "man", "application/x-troff-man" }
 129      , { "me", "application/x-troff-me" }
 130      , { "mesh", "model/mesh" }
 131      , { "mid", "audio/midi" }
 132      , { "midi", "audio/midi" }
 133      , { "mif", "application/vnd.mif" }
 134      , { "mov", "video/quicktime" }
 135      , { "movie", "video/x-sgi-movie" }
 136      , { "mp2", "audio/mpeg" }
 137      , { "mp3", "audio/mpeg" }
 138      , { "mpe", "video/mpeg" }
 139      , { "mpeg", "video/mpeg" }
 140      , { "mpg", "video/mpeg" }
 141      , { "mpga", "audio/mpeg" }
 142      , { "ms", "application/x-troff-ms" }
 143      , { "msh", "model/mesh" }
 144      , { "mxu", "video/vnd.mpegurl" }
 145      , { "nc", "application/x-netcdf" }
 146      , { "ogg", "application/ogg" }
 147      , { "pbm", "image/x-portable-bitmap" }
 148      , { "pdb", "chemical/x-pdb" }
 149      , { "pdf", "application/pdf" }
 150      , { "pgm", "image/x-portable-graymap" }
 151      , { "pgn", "application/x-chess-pgn" }
 152      , { "png", "image/png" }
 153      , { "pnm", "image/x-portable-anymap" }
 154      , { "ppm", "image/x-portable-pixmap" }
 155      , { "ppt", "application/vnd.ms-powerpoint" }
 156      , { "ps", "application/postscript" }
 157      , { "qt", "video/quicktime" }
 158      , { "ra", "audio/x-realaudio" }
 159      , { "ram", "audio/x-pn-realaudio" }
 160      , { "ras", "image/x-cmu-raster" }
 161      , { "rgb", "image/x-rgb" }
 162      , { "rm", "audio/x-pn-realaudio" }
 163      , { "roff", "application/x-troff" }
 164      , { "rpm", "application/x-rpm" }
 165      , { "rtf", "text/rtf" }
 166      , { "rtx", "text/richtext" }
 167      , { "sgm", "text/sgml" }
 168      , { "sgml", "text/sgml" }
 169      , { "sh", "application/x-sh" }
 170      , { "shar", "application/x-shar" }
 171      , { "silo", "model/mesh" }
 172      , { "sit", "application/x-stuffit" }
 173      , { "skd", "application/x-koan" }
 174      , { "skm", "application/x-koan" }
 175      , { "skp", "application/x-koan" }
 176      , { "skt", "application/x-koan" }
 177      , { "smi", "application/smil" }
 178      , { "smil", "application/smil" }
 179      , { "snd", "audio/basic" }
 180      , { "so", "application/octet-stream" }
 181      , { "spl", "application/x-futuresplash" }
 182      , { "src", "application/x-wais-source" }
 183      , { "stc", "application/vnd.sun.xml.calc.template" }
 184      , { "std", "application/vnd.sun.xml.draw.template" }
 185      , { "sti", "application/vnd.sun.xml.impress.template" }
 186      , { "stw", "application/vnd.sun.xml.writer.template" }
 187      , { "sv4cpio", "application/x-sv4cpio" }
 188      , { "sv4crc", "application/x-sv4crc" }
 189      , { "swf", "application/x-shockwave-flash" }
 190      , { "sxc", "application/vnd.sun.xml.calc" }
 191      , { "sxd", "application/vnd.sun.xml.draw" }
 192      , { "sxg", "application/vnd.sun.xml.writer.global" }
 193      , { "sxi", "application/vnd.sun.xml.impress" }
 194      , { "sxm", "application/vnd.sun.xml.math" }
 195      , { "sxw", "application/vnd.sun.xml.writer" }
 196      , { "t", "application/x-troff" }
 197      , { "tar", "application/x-tar" }
 198      , { "tcl", "application/x-tcl" }
 199      , { "tex", "application/x-tex" }
 200      , { "texi", "application/x-texinfo" }
 201      , { "texinfo", "application/x-texinfo" }
 202      , { "tgz", "application/x-gzip" }
 203      , { "tif", "image/tiff" }
 204      , { "tiff", "image/tiff" }
 205      , { "torrent", "application/x-bittorrent" }
 206      , { "tr", "application/x-troff" }
 207      , { "tsv", "text/tab-separated-values" }
 208      , { "txt", "text/plain" }
 209      , { "ustar", "application/x-ustar" }
 210      , { "vcd", "application/x-cdlink" }
 211      , { "vrml", "model/vrml" }
 212      , { "wav", "audio/x-wav" }
 213      , { "wbmp", "image/vnd.wap.wbmp" }
 214      , { "wbxml", "application/vnd.wap.wbxml" }
 215      , { "wml", "text/vnd.wap.wml" }
 216      , { "wmlc", "application/vnd.wap.wmlc" }
 217      , { "wmls", "text/vnd.wap.wmlscript" }
 218      , { "wmlsc", "application/vnd.wap.wmlscriptc" }
 219      , { "wrl", "model/vrml" }
 220      , { "xbm", "image/x-xbitmap" }
 221      , { "xht", "application/xhtml+xml" }
 222      , { "xhtml", "application/xhtml+xml" }
 223      , { "xls", "application/vnd.ms-excel" }
 224      , { "xml", "text/xml" }
 225      , { "xpm", "image/x-xpixmap" }
 226      , { "xsl", "text/xml" }
 227      , { "xwd", "image/x-xwindowdump" }
 228      , { "xyz", "chemical/x-xyz" }
 229      , { "zip", "application/zip" }
 230     };
 231
 232   /**
 233    * The MIME types above are put into this Hashtable for faster lookup.
 234    */
 235   private Hashtable mime_types = new Hashtable(150);
 236
 237   /**
 238    * Create a new <code>MimeTypeMapper</code> object.
 239    */
 240   public MimeTypeMapper()
 241   {
 242     for (int i = 0; i < mime_strings.length; i++)
 243       mime_types.put(mime_strings[i][0], mime_strings[i][1]);
 244
 245     // Now read from the system mime database, if it exists.  Entries found
 246     // here override our internal ones.
 247     try
 248       {
 249         // On Linux this usually means /etc/mime.types.
 250         String file
 251           = SystemProperties.getProperty("gnu.classpath.mime.types.file");
 252         if (file != null)
 253           fillFromFile(mime_types, file);
 254       }
 255     catch (IOException ignore)
 256       {
 257       }
 258   }
 259
 260   public static void fillFromFile (Map table, String fname)
 261     throws IOException
 262   {
 263     LineNumberReader reader =
 264       new LineNumberReader (new FileReader (fname));
 265
 266     while (reader.ready ())
 267       {
 268         StringTokenizer tokenizer =
 269           new StringTokenizer (reader.readLine ());
 270
 271         try
 272           {
 273             String t = tokenizer.nextToken ();
 274
 275             if (! t.startsWith ("#"))
 276               {
 277                 while (true)
 278                   {
 279                     // Read the next extension
 280                     String e = tokenizer.nextToken ();
 281                     if ((e != null) && (! e.startsWith ("#")))
 282                       table.put (e, t);
 283                     else
 284                       break;
 285                   }
 286               }
 287           }
 288         catch (NoSuchElementException ex)
 289           {
 290             // Do nothing.
 291           }
 292       }
 293   }
 294
 295   /**
 296    * The method returns the MIME type of the filename passed as an argument.
 297    * The value returned is based on the extension of the filename.  The
 298    * default content type returned if this method cannot determine the
 299    * actual content type is "application/octet-stream"
 300    *
 301    * @param filename The name of the file to return the MIME type for
 302    *
 303    * @return The MIME type
 304    */
 305   public String getContentTypeFor(String filename)
 306   {
 307     int index = filename.lastIndexOf(".");
 308     if (index != -1)
 309       {
 310         if (index == filename.length())
 311           return "application/octet-stream";
 312         else
 313           filename = filename.substring(index + 1);
 314       }
 315
 316     String type = (String) mime_types.get(filename);
 317     if (type == null)
 318       return "application/octet-stream";
 319     else
 320       return type;
 321   }
 322
 323   /**
 324    * Run this class as a program to create a new mime_strings table.
 325    */
 326   public static void main(String[] args) throws IOException
 327   {
 328     TreeMap map = new TreeMap();
 329     // It is fine to hard-code the name here.  This is only ever
 330     // used by maintainers, who can hack it if they need to re-run
 331     // it.
 332     fillFromFile(map, "/etc/mime.types");
 333     Iterator it = map.keySet().iterator();
 334     boolean first = true;
 335     while (it.hasNext())
 336       {
 337         String key = (String) it.next();
 338         String value = (String) map.get(key);
 339         // Put the "," first since it is easier to make correct syntax this way.
 340         System.out.println("      " + (first ? "  " : ", ")
 341                            + "{ \"" + key + "\", \"" + value + "\" }");
 342         first = false;
 343       }
 344   }
 345 }