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<String, String> mime_types
 236     = new Hashtable<String, String>(150);
 237
 238   /**
 239    * Create a new <code>MimeTypeMapper</code> object.
 240    */
 241   public MimeTypeMapper()
 242   {
 243     for (int i = 0; i < mime_strings.length; i++)
 244       mime_types.put(mime_strings[i][0], mime_strings[i][1]);
 245
 246     // Now read from the system mime database, if it exists.  Entries found
 247     // here override our internal ones.
 248     try
 249       {
 250         // On Linux this usually means /etc/mime.types.
 251         String file
 252           = SystemProperties.getProperty("gnu.classpath.mime.types.file");
 253         if (file != null)
 254           fillFromFile(mime_types, file);
 255       }
 256     catch (IOException ignore)
 257       {
 258       }
 259   }
 260
 261   public static void fillFromFile (Map<String, String> table, String fname)
 262     throws IOException
 263   {
 264     LineNumberReader reader =
 265       new LineNumberReader (new FileReader (fname));
 266
 267     while (reader.ready ())
 268       {
 269         StringTokenizer tokenizer =
 270           new StringTokenizer (reader.readLine ());
 271
 272         try
 273           {
 274             String t = tokenizer.nextToken ();
 275
 276             if (! t.startsWith ("#"))
 277               {
 278                 while (true)
 279                   {
 280                     // Read the next extension
 281                     String e = tokenizer.nextToken ();
 282                     if ((e != null) && (! e.startsWith ("#")))
 283                       table.put (e, t);
 284                     else
 285                       break;
 286                   }
 287               }
 288           }
 289         catch (NoSuchElementException ex)
 290           {
 291             // Do nothing.
 292           }
 293       }
 294   }
 295
 296   /**
 297    * The method returns the MIME type of the filename passed as an argument.
 298    * The value returned is based on the extension of the filename.  The
 299    * default content type returned if this method cannot determine the
 300    * actual content type is "application/octet-stream"
 301    *
 302    * @param filename The name of the file to return the MIME type for
 303    *
 304    * @return The MIME type
 305    */
 306   public String getContentTypeFor(String filename)
 307   {
 308     int index = filename.lastIndexOf(".");
 309     if (index != -1)
 310       {
 311         if (index == filename.length())
 312           return "application/octet-stream";
 313         else
 314           filename = filename.substring(index + 1);
 315       }
 316
 317     String type = (String) mime_types.get(filename);
 318     if (type == null)
 319       return "application/octet-stream";
 320     else
 321       return type;
 322   }
 323
 324   /**
 325    * Run this class as a program to create a new mime_strings table.
 326    */
 327   public static void main(String[] args) throws IOException
 328   {
 329     TreeMap<String, String> map = new TreeMap<String, String>();
 330     // It is fine to hard-code the name here.  This is only ever
 331     // used by maintainers, who can hack it if they need to re-run
 332     // it.
 333     fillFromFile(map, "/etc/mime.types");
 334     Iterator<String> it = map.keySet().iterator();
 335     boolean first = true;
 336     while (it.hasNext())
 337       {
 338         String key = it.next();
 339         String value = map.get(key);
 340         // Put the "," first since it is easier to make correct syntax this way.
 341         System.out.println("      " + (first ? "  " : ", ")
 342                            + "{ \"" + key + "\", \"" + value + "\" }");
 343         first = false;
 344       }
 345   }
 346 }