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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.webkit;
     18 
     19 import java.util.HashMap;
     20 import java.util.regex.Pattern;
     21 
     22 /**
     23  * Two-way map that maps MIME-types to file extensions and vice versa.
     24  */
     25 public class MimeTypeMap {
     26 
     27     /**
     28      * Singleton MIME-type map instance:
     29      */
     30     private static MimeTypeMap sMimeTypeMap;
     31 
     32     /**
     33      * MIME-type to file extension mapping:
     34      */
     35     private HashMap<String, String> mMimeTypeToExtensionMap;
     36 
     37     /**
     38      * File extension to MIME type mapping:
     39      */
     40     private HashMap<String, String> mExtensionToMimeTypeMap;
     41 
     42     /**
     43      * Creates a new MIME-type map.
     44      */
     45     private MimeTypeMap() {
     46         mMimeTypeToExtensionMap = new HashMap<String, String>();
     47         mExtensionToMimeTypeMap = new HashMap<String, String>();
     48     }
     49 
     50     /**
     51      * Returns the file extension or an empty string iff there is no
     52      * extension. This method is a convenience method for obtaining the
     53      * extension of a url and has undefined results for other Strings.
     54      * @param url
     55      * @return The file extension of the given url.
     56      */
     57     public static String getFileExtensionFromUrl(String url) {
     58         if (url != null && url.length() > 0) {
     59             int query = url.lastIndexOf('?');
     60             if (query > 0) {
     61                 url = url.substring(0, query);
     62             }
     63             int filenamePos = url.lastIndexOf('/');
     64             String filename =
     65                 0 <= filenamePos ? url.substring(filenamePos + 1) : url;
     66 
     67             // if the filename contains special characters, we don't
     68             // consider it valid for our matching purposes:
     69             if (filename.length() > 0 &&
     70                 Pattern.matches("[a-zA-Z_0-9\\.\\-\\(\\)\\%]+", filename)) {
     71                 int dotPos = filename.lastIndexOf('.');
     72                 if (0 <= dotPos) {
     73                     return filename.substring(dotPos + 1);
     74                 }
     75             }
     76         }
     77 
     78         return "";
     79     }
     80 
     81     /**
     82      * Load an entry into the map. This does not check if the item already
     83      * exists, it trusts the caller!
     84      */
     85     private void loadEntry(String mimeType, String extension) {
     86         //
     87         // if we have an existing x --> y mapping, we do not want to
     88         // override it with another mapping x --> ?
     89         // this is mostly because of the way the mime-type map below
     90         // is constructed (if a mime type maps to several extensions
     91         // the first extension is considered the most popular and is
     92         // added first; we do not want to overwrite it later).
     93         //
     94         if (!mMimeTypeToExtensionMap.containsKey(mimeType)) {
     95             mMimeTypeToExtensionMap.put(mimeType, extension);
     96         }
     97 
     98         mExtensionToMimeTypeMap.put(extension, mimeType);
     99     }
    100 
    101     /**
    102      * Return true if the given MIME type has an entry in the map.
    103      * @param mimeType A MIME type (i.e. text/plain)
    104      * @return True iff there is a mimeType entry in the map.
    105      */
    106     public boolean hasMimeType(String mimeType) {
    107         if (mimeType != null && mimeType.length() > 0) {
    108             return mMimeTypeToExtensionMap.containsKey(mimeType);
    109         }
    110 
    111         return false;
    112     }
    113 
    114     /**
    115      * Return the MIME type for the given extension.
    116      * @param extension A file extension without the leading '.'
    117      * @return The MIME type for the given extension or null iff there is none.
    118      */
    119     public String getMimeTypeFromExtension(String extension) {
    120         if (extension != null && extension.length() > 0) {
    121             return mExtensionToMimeTypeMap.get(extension);
    122         }
    123 
    124         return null;
    125     }
    126 
    127     // Static method called by jni.
    128     private static String mimeTypeFromExtension(String extension) {
    129         return getSingleton().getMimeTypeFromExtension(extension);
    130     }
    131 
    132     /**
    133      * Return true if the given extension has a registered MIME type.
    134      * @param extension A file extension without the leading '.'
    135      * @return True iff there is an extension entry in the map.
    136      */
    137     public boolean hasExtension(String extension) {
    138         if (extension != null && extension.length() > 0) {
    139             return mExtensionToMimeTypeMap.containsKey(extension);
    140         }
    141         return false;
    142     }
    143 
    144     /**
    145      * Return the registered extension for the given MIME type. Note that some
    146      * MIME types map to multiple extensions. This call will return the most
    147      * common extension for the given MIME type.
    148      * @param mimeType A MIME type (i.e. text/plain)
    149      * @return The extension for the given MIME type or null iff there is none.
    150      */
    151     public String getExtensionFromMimeType(String mimeType) {
    152         if (mimeType != null && mimeType.length() > 0) {
    153             return mMimeTypeToExtensionMap.get(mimeType);
    154         }
    155 
    156         return null;
    157     }
    158 
    159     /**
    160      * Get the singleton instance of MimeTypeMap.
    161      * @return The singleton instance of the MIME-type map.
    162      */
    163     public static MimeTypeMap getSingleton() {
    164         if (sMimeTypeMap == null) {
    165             sMimeTypeMap = new MimeTypeMap();
    166 
    167             // The following table is based on /etc/mime.types data minus
    168             // chemical/* MIME types and MIME types that don't map to any
    169             // file extensions. We also exclude top-level domain names to
    170             // deal with cases like:
    171             //
    172             // mail.google.com/a/google.com
    173             //
    174             // and "active" MIME types (due to potential security issues).
    175 
    176             sMimeTypeMap.loadEntry("application/andrew-inset", "ez");
    177             sMimeTypeMap.loadEntry("application/dsptype", "tsp");
    178             sMimeTypeMap.loadEntry("application/futuresplash", "spl");
    179             sMimeTypeMap.loadEntry("application/hta", "hta");
    180             sMimeTypeMap.loadEntry("application/mac-binhex40", "hqx");
    181             sMimeTypeMap.loadEntry("application/mac-compactpro", "cpt");
    182             sMimeTypeMap.loadEntry("application/mathematica", "nb");
    183             sMimeTypeMap.loadEntry("application/msaccess", "mdb");
    184             sMimeTypeMap.loadEntry("application/oda", "oda");
    185             sMimeTypeMap.loadEntry("application/ogg", "ogg");
    186             sMimeTypeMap.loadEntry("application/pdf", "pdf");
    187             sMimeTypeMap.loadEntry("application/pgp-keys", "key");
    188             sMimeTypeMap.loadEntry("application/pgp-signature", "pgp");
    189             sMimeTypeMap.loadEntry("application/pics-rules", "prf");
    190             sMimeTypeMap.loadEntry("application/rar", "rar");
    191             sMimeTypeMap.loadEntry("application/rdf+xml", "rdf");
    192             sMimeTypeMap.loadEntry("application/rss+xml", "rss");
    193             sMimeTypeMap.loadEntry("application/zip", "zip");
    194             sMimeTypeMap.loadEntry("application/vnd.android.package-archive",
    195                     "apk");
    196             sMimeTypeMap.loadEntry("application/vnd.cinderella", "cdy");
    197             sMimeTypeMap.loadEntry("application/vnd.ms-pki.stl", "stl");
    198             sMimeTypeMap.loadEntry(
    199                     "application/vnd.oasis.opendocument.database", "odb");
    200             sMimeTypeMap.loadEntry(
    201                     "application/vnd.oasis.opendocument.formula", "odf");
    202             sMimeTypeMap.loadEntry(
    203                     "application/vnd.oasis.opendocument.graphics", "odg");
    204             sMimeTypeMap.loadEntry(
    205                     "application/vnd.oasis.opendocument.graphics-template",
    206                     "otg");
    207             sMimeTypeMap.loadEntry(
    208                     "application/vnd.oasis.opendocument.image", "odi");
    209             sMimeTypeMap.loadEntry(
    210                     "application/vnd.oasis.opendocument.spreadsheet", "ods");
    211             sMimeTypeMap.loadEntry(
    212                     "application/vnd.oasis.opendocument.spreadsheet-template",
    213                     "ots");
    214             sMimeTypeMap.loadEntry(
    215                     "application/vnd.oasis.opendocument.text", "odt");
    216             sMimeTypeMap.loadEntry(
    217                     "application/vnd.oasis.opendocument.text-master", "odm");
    218             sMimeTypeMap.loadEntry(
    219                     "application/vnd.oasis.opendocument.text-template", "ott");
    220             sMimeTypeMap.loadEntry(
    221                     "application/vnd.oasis.opendocument.text-web", "oth");
    222             sMimeTypeMap.loadEntry("application/msword", "doc");
    223             sMimeTypeMap.loadEntry("application/msword", "dot");
    224             sMimeTypeMap.loadEntry(
    225                     "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
    226                     "docx");
    227             sMimeTypeMap.loadEntry(
    228                     "application/vnd.openxmlformats-officedocument.wordprocessingml.template",
    229                     "dotx");
    230             sMimeTypeMap.loadEntry("application/vnd.ms-excel", "xls");
    231             sMimeTypeMap.loadEntry("application/vnd.ms-excel", "xlt");
    232             sMimeTypeMap.loadEntry(
    233                     "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
    234                     "xlsx");
    235             sMimeTypeMap.loadEntry(
    236                     "application/vnd.openxmlformats-officedocument.spreadsheetml.template",
    237                     "xltx");
    238             sMimeTypeMap.loadEntry("application/vnd.ms-powerpoint", "ppt");
    239             sMimeTypeMap.loadEntry("application/vnd.ms-powerpoint", "pot");
    240             sMimeTypeMap.loadEntry("application/vnd.ms-powerpoint", "pps");
    241             sMimeTypeMap.loadEntry(
    242                     "application/vnd.openxmlformats-officedocument.presentationml.presentation",
    243                     "pptx");
    244             sMimeTypeMap.loadEntry(
    245                     "application/vnd.openxmlformats-officedocument.presentationml.template",
    246                     "potx");
    247             sMimeTypeMap.loadEntry(
    248                     "application/vnd.openxmlformats-officedocument.presentationml.slideshow",
    249                     "ppsx");
    250             sMimeTypeMap.loadEntry("application/vnd.rim.cod", "cod");
    251             sMimeTypeMap.loadEntry("application/vnd.smaf", "mmf");
    252             sMimeTypeMap.loadEntry("application/vnd.stardivision.calc", "sdc");
    253             sMimeTypeMap.loadEntry("application/vnd.stardivision.draw", "sda");
    254             sMimeTypeMap.loadEntry(
    255                     "application/vnd.stardivision.impress", "sdd");
    256             sMimeTypeMap.loadEntry(
    257                     "application/vnd.stardivision.impress", "sdp");
    258             sMimeTypeMap.loadEntry("application/vnd.stardivision.math", "smf");
    259             sMimeTypeMap.loadEntry("application/vnd.stardivision.writer",
    260                     "sdw");
    261             sMimeTypeMap.loadEntry("application/vnd.stardivision.writer",
    262                     "vor");
    263             sMimeTypeMap.loadEntry(
    264                     "application/vnd.stardivision.writer-global", "sgl");
    265             sMimeTypeMap.loadEntry("application/vnd.sun.xml.calc", "sxc");
    266             sMimeTypeMap.loadEntry(
    267                     "application/vnd.sun.xml.calc.template", "stc");
    268             sMimeTypeMap.loadEntry("application/vnd.sun.xml.draw", "sxd");
    269             sMimeTypeMap.loadEntry(
    270                     "application/vnd.sun.xml.draw.template", "std");
    271             sMimeTypeMap.loadEntry("application/vnd.sun.xml.impress", "sxi");
    272             sMimeTypeMap.loadEntry(
    273                     "application/vnd.sun.xml.impress.template", "sti");
    274             sMimeTypeMap.loadEntry("application/vnd.sun.xml.math", "sxm");
    275             sMimeTypeMap.loadEntry("application/vnd.sun.xml.writer", "sxw");
    276             sMimeTypeMap.loadEntry(
    277                     "application/vnd.sun.xml.writer.global", "sxg");
    278             sMimeTypeMap.loadEntry(
    279                     "application/vnd.sun.xml.writer.template", "stw");
    280             sMimeTypeMap.loadEntry("application/vnd.visio", "vsd");
    281             sMimeTypeMap.loadEntry("application/x-abiword", "abw");
    282             sMimeTypeMap.loadEntry("application/x-apple-diskimage", "dmg");
    283             sMimeTypeMap.loadEntry("application/x-bcpio", "bcpio");
    284             sMimeTypeMap.loadEntry("application/x-bittorrent", "torrent");
    285             sMimeTypeMap.loadEntry("application/x-cdf", "cdf");
    286             sMimeTypeMap.loadEntry("application/x-cdlink", "vcd");
    287             sMimeTypeMap.loadEntry("application/x-chess-pgn", "pgn");
    288             sMimeTypeMap.loadEntry("application/x-cpio", "cpio");
    289             sMimeTypeMap.loadEntry("application/x-debian-package", "deb");
    290             sMimeTypeMap.loadEntry("application/x-debian-package", "udeb");
    291             sMimeTypeMap.loadEntry("application/x-director", "dcr");
    292             sMimeTypeMap.loadEntry("application/x-director", "dir");
    293             sMimeTypeMap.loadEntry("application/x-director", "dxr");
    294             sMimeTypeMap.loadEntry("application/x-dms", "dms");
    295             sMimeTypeMap.loadEntry("application/x-doom", "wad");
    296             sMimeTypeMap.loadEntry("application/x-dvi", "dvi");
    297             sMimeTypeMap.loadEntry("application/x-flac", "flac");
    298             sMimeTypeMap.loadEntry("application/x-font", "pfa");
    299             sMimeTypeMap.loadEntry("application/x-font", "pfb");
    300             sMimeTypeMap.loadEntry("application/x-font", "gsf");
    301             sMimeTypeMap.loadEntry("application/x-font", "pcf");
    302             sMimeTypeMap.loadEntry("application/x-font", "pcf.Z");
    303             sMimeTypeMap.loadEntry("application/x-freemind", "mm");
    304             sMimeTypeMap.loadEntry("application/x-futuresplash", "spl");
    305             sMimeTypeMap.loadEntry("application/x-gnumeric", "gnumeric");
    306             sMimeTypeMap.loadEntry("application/x-go-sgf", "sgf");
    307             sMimeTypeMap.loadEntry("application/x-graphing-calculator", "gcf");
    308             sMimeTypeMap.loadEntry("application/x-gtar", "gtar");
    309             sMimeTypeMap.loadEntry("application/x-gtar", "tgz");
    310             sMimeTypeMap.loadEntry("application/x-gtar", "taz");
    311             sMimeTypeMap.loadEntry("application/x-hdf", "hdf");
    312             sMimeTypeMap.loadEntry("application/x-ica", "ica");
    313             sMimeTypeMap.loadEntry("application/x-internet-signup", "ins");
    314             sMimeTypeMap.loadEntry("application/x-internet-signup", "isp");
    315             sMimeTypeMap.loadEntry("application/x-iphone", "iii");
    316             sMimeTypeMap.loadEntry("application/x-iso9660-image", "iso");
    317             sMimeTypeMap.loadEntry("application/x-jmol", "jmz");
    318             sMimeTypeMap.loadEntry("application/x-kchart", "chrt");
    319             sMimeTypeMap.loadEntry("application/x-killustrator", "kil");
    320             sMimeTypeMap.loadEntry("application/x-koan", "skp");
    321             sMimeTypeMap.loadEntry("application/x-koan", "skd");
    322             sMimeTypeMap.loadEntry("application/x-koan", "skt");
    323             sMimeTypeMap.loadEntry("application/x-koan", "skm");
    324             sMimeTypeMap.loadEntry("application/x-kpresenter", "kpr");
    325             sMimeTypeMap.loadEntry("application/x-kpresenter", "kpt");
    326             sMimeTypeMap.loadEntry("application/x-kspread", "ksp");
    327             sMimeTypeMap.loadEntry("application/x-kword", "kwd");
    328             sMimeTypeMap.loadEntry("application/x-kword", "kwt");
    329             sMimeTypeMap.loadEntry("application/x-latex", "latex");
    330             sMimeTypeMap.loadEntry("application/x-lha", "lha");
    331             sMimeTypeMap.loadEntry("application/x-lzh", "lzh");
    332             sMimeTypeMap.loadEntry("application/x-lzx", "lzx");
    333             sMimeTypeMap.loadEntry("application/x-maker", "frm");
    334             sMimeTypeMap.loadEntry("application/x-maker", "maker");
    335             sMimeTypeMap.loadEntry("application/x-maker", "frame");
    336             sMimeTypeMap.loadEntry("application/x-maker", "fb");
    337             sMimeTypeMap.loadEntry("application/x-maker", "book");
    338             sMimeTypeMap.loadEntry("application/x-maker", "fbdoc");
    339             sMimeTypeMap.loadEntry("application/x-mif", "mif");
    340             sMimeTypeMap.loadEntry("application/x-ms-wmd", "wmd");
    341             sMimeTypeMap.loadEntry("application/x-ms-wmz", "wmz");
    342             sMimeTypeMap.loadEntry("application/x-msi", "msi");
    343             sMimeTypeMap.loadEntry("application/x-ns-proxy-autoconfig", "pac");
    344             sMimeTypeMap.loadEntry("application/x-nwc", "nwc");
    345             sMimeTypeMap.loadEntry("application/x-object", "o");
    346             sMimeTypeMap.loadEntry("application/x-oz-application", "oza");
    347             sMimeTypeMap.loadEntry("application/x-pkcs12", "p12");
    348             sMimeTypeMap.loadEntry("application/x-pkcs7-certreqresp", "p7r");
    349             sMimeTypeMap.loadEntry("application/x-pkcs7-crl", "crl");
    350             sMimeTypeMap.loadEntry("application/x-quicktimeplayer", "qtl");
    351             sMimeTypeMap.loadEntry("application/x-shar", "shar");
    352             sMimeTypeMap.loadEntry("application/x-shockwave-flash", "swf");
    353             sMimeTypeMap.loadEntry("application/x-stuffit", "sit");
    354             sMimeTypeMap.loadEntry("application/x-sv4cpio", "sv4cpio");
    355             sMimeTypeMap.loadEntry("application/x-sv4crc", "sv4crc");
    356             sMimeTypeMap.loadEntry("application/x-tar", "tar");
    357             sMimeTypeMap.loadEntry("application/x-texinfo", "texinfo");
    358             sMimeTypeMap.loadEntry("application/x-texinfo", "texi");
    359             sMimeTypeMap.loadEntry("application/x-troff", "t");
    360             sMimeTypeMap.loadEntry("application/x-troff", "roff");
    361             sMimeTypeMap.loadEntry("application/x-troff-man", "man");
    362             sMimeTypeMap.loadEntry("application/x-ustar", "ustar");
    363             sMimeTypeMap.loadEntry("application/x-wais-source", "src");
    364             sMimeTypeMap.loadEntry("application/x-wingz", "wz");
    365             sMimeTypeMap.loadEntry("application/x-webarchive", "webarchive");
    366             sMimeTypeMap.loadEntry("application/x-x509-ca-cert", "crt");
    367             sMimeTypeMap.loadEntry("application/x-x509-user-cert", "crt");
    368             sMimeTypeMap.loadEntry("application/x-xcf", "xcf");
    369             sMimeTypeMap.loadEntry("application/x-xfig", "fig");
    370             sMimeTypeMap.loadEntry("application/xhtml+xml", "xhtml");
    371             sMimeTypeMap.loadEntry("audio/3gpp", "3gpp");
    372             sMimeTypeMap.loadEntry("audio/basic", "snd");
    373             sMimeTypeMap.loadEntry("audio/midi", "mid");
    374             sMimeTypeMap.loadEntry("audio/midi", "midi");
    375             sMimeTypeMap.loadEntry("audio/midi", "kar");
    376             sMimeTypeMap.loadEntry("audio/mpeg", "mpga");
    377             sMimeTypeMap.loadEntry("audio/mpeg", "mpega");
    378             sMimeTypeMap.loadEntry("audio/mpeg", "mp2");
    379             sMimeTypeMap.loadEntry("audio/mpeg", "mp3");
    380             sMimeTypeMap.loadEntry("audio/mpeg", "m4a");
    381             sMimeTypeMap.loadEntry("audio/mpegurl", "m3u");
    382             sMimeTypeMap.loadEntry("audio/prs.sid", "sid");
    383             sMimeTypeMap.loadEntry("audio/x-aiff", "aif");
    384             sMimeTypeMap.loadEntry("audio/x-aiff", "aiff");
    385             sMimeTypeMap.loadEntry("audio/x-aiff", "aifc");
    386             sMimeTypeMap.loadEntry("audio/x-gsm", "gsm");
    387             sMimeTypeMap.loadEntry("audio/x-mpegurl", "m3u");
    388             sMimeTypeMap.loadEntry("audio/x-ms-wma", "wma");
    389             sMimeTypeMap.loadEntry("audio/x-ms-wax", "wax");
    390             sMimeTypeMap.loadEntry("audio/x-pn-realaudio", "ra");
    391             sMimeTypeMap.loadEntry("audio/x-pn-realaudio", "rm");
    392             sMimeTypeMap.loadEntry("audio/x-pn-realaudio", "ram");
    393             sMimeTypeMap.loadEntry("audio/x-realaudio", "ra");
    394             sMimeTypeMap.loadEntry("audio/x-scpls", "pls");
    395             sMimeTypeMap.loadEntry("audio/x-sd2", "sd2");
    396             sMimeTypeMap.loadEntry("audio/x-wav", "wav");
    397             sMimeTypeMap.loadEntry("image/bmp", "bmp");
    398             sMimeTypeMap.loadEntry("image/gif", "gif");
    399             sMimeTypeMap.loadEntry("image/ico", "cur");
    400             sMimeTypeMap.loadEntry("image/ico", "ico");
    401             sMimeTypeMap.loadEntry("image/ief", "ief");
    402             sMimeTypeMap.loadEntry("image/jpeg", "jpeg");
    403             sMimeTypeMap.loadEntry("image/jpeg", "jpg");
    404             sMimeTypeMap.loadEntry("image/jpeg", "jpe");
    405             sMimeTypeMap.loadEntry("image/pcx", "pcx");
    406             sMimeTypeMap.loadEntry("image/png", "png");
    407             sMimeTypeMap.loadEntry("image/svg+xml", "svg");
    408             sMimeTypeMap.loadEntry("image/svg+xml", "svgz");
    409             sMimeTypeMap.loadEntry("image/tiff", "tiff");
    410             sMimeTypeMap.loadEntry("image/tiff", "tif");
    411             sMimeTypeMap.loadEntry("image/vnd.djvu", "djvu");
    412             sMimeTypeMap.loadEntry("image/vnd.djvu", "djv");
    413             sMimeTypeMap.loadEntry("image/vnd.wap.wbmp", "wbmp");
    414             sMimeTypeMap.loadEntry("image/x-cmu-raster", "ras");
    415             sMimeTypeMap.loadEntry("image/x-coreldraw", "cdr");
    416             sMimeTypeMap.loadEntry("image/x-coreldrawpattern", "pat");
    417             sMimeTypeMap.loadEntry("image/x-coreldrawtemplate", "cdt");
    418             sMimeTypeMap.loadEntry("image/x-corelphotopaint", "cpt");
    419             sMimeTypeMap.loadEntry("image/x-icon", "ico");
    420             sMimeTypeMap.loadEntry("image/x-jg", "art");
    421             sMimeTypeMap.loadEntry("image/x-jng", "jng");
    422             sMimeTypeMap.loadEntry("image/x-ms-bmp", "bmp");
    423             sMimeTypeMap.loadEntry("image/x-photoshop", "psd");
    424             sMimeTypeMap.loadEntry("image/x-portable-anymap", "pnm");
    425             sMimeTypeMap.loadEntry("image/x-portable-bitmap", "pbm");
    426             sMimeTypeMap.loadEntry("image/x-portable-graymap", "pgm");
    427             sMimeTypeMap.loadEntry("image/x-portable-pixmap", "ppm");
    428             sMimeTypeMap.loadEntry("image/x-rgb", "rgb");
    429             sMimeTypeMap.loadEntry("image/x-xbitmap", "xbm");
    430             sMimeTypeMap.loadEntry("image/x-xpixmap", "xpm");
    431             sMimeTypeMap.loadEntry("image/x-xwindowdump", "xwd");
    432             sMimeTypeMap.loadEntry("model/iges", "igs");
    433             sMimeTypeMap.loadEntry("model/iges", "iges");
    434             sMimeTypeMap.loadEntry("model/mesh", "msh");
    435             sMimeTypeMap.loadEntry("model/mesh", "mesh");
    436             sMimeTypeMap.loadEntry("model/mesh", "silo");
    437             sMimeTypeMap.loadEntry("text/calendar", "ics");
    438             sMimeTypeMap.loadEntry("text/calendar", "icz");
    439             sMimeTypeMap.loadEntry("text/comma-separated-values", "csv");
    440             sMimeTypeMap.loadEntry("text/css", "css");
    441             sMimeTypeMap.loadEntry("text/html", "htm");
    442             sMimeTypeMap.loadEntry("text/html", "html");
    443             sMimeTypeMap.loadEntry("text/h323", "323");
    444             sMimeTypeMap.loadEntry("text/iuls", "uls");
    445             sMimeTypeMap.loadEntry("text/mathml", "mml");
    446             // add it first so it will be the default for ExtensionFromMimeType
    447             sMimeTypeMap.loadEntry("text/plain", "txt");
    448             sMimeTypeMap.loadEntry("text/plain", "asc");
    449             sMimeTypeMap.loadEntry("text/plain", "text");
    450             sMimeTypeMap.loadEntry("text/plain", "diff");
    451             sMimeTypeMap.loadEntry("text/plain", "po");     // reserve "pot" for vnd.ms-powerpoint
    452             sMimeTypeMap.loadEntry("text/richtext", "rtx");
    453             sMimeTypeMap.loadEntry("text/rtf", "rtf");
    454             sMimeTypeMap.loadEntry("text/texmacs", "ts");
    455             sMimeTypeMap.loadEntry("text/text", "phps");
    456             sMimeTypeMap.loadEntry("text/tab-separated-values", "tsv");
    457             sMimeTypeMap.loadEntry("text/xml", "xml");
    458             sMimeTypeMap.loadEntry("text/x-bibtex", "bib");
    459             sMimeTypeMap.loadEntry("text/x-boo", "boo");
    460             sMimeTypeMap.loadEntry("text/x-c++hdr", "h++");
    461             sMimeTypeMap.loadEntry("text/x-c++hdr", "hpp");
    462             sMimeTypeMap.loadEntry("text/x-c++hdr", "hxx");
    463             sMimeTypeMap.loadEntry("text/x-c++hdr", "hh");
    464             sMimeTypeMap.loadEntry("text/x-c++src", "c++");
    465             sMimeTypeMap.loadEntry("text/x-c++src", "cpp");
    466             sMimeTypeMap.loadEntry("text/x-c++src", "cxx");
    467             sMimeTypeMap.loadEntry("text/x-chdr", "h");
    468             sMimeTypeMap.loadEntry("text/x-component", "htc");
    469             sMimeTypeMap.loadEntry("text/x-csh", "csh");
    470             sMimeTypeMap.loadEntry("text/x-csrc", "c");
    471             sMimeTypeMap.loadEntry("text/x-dsrc", "d");
    472             sMimeTypeMap.loadEntry("text/x-haskell", "hs");
    473             sMimeTypeMap.loadEntry("text/x-java", "java");
    474             sMimeTypeMap.loadEntry("text/x-literate-haskell", "lhs");
    475             sMimeTypeMap.loadEntry("text/x-moc", "moc");
    476             sMimeTypeMap.loadEntry("text/x-pascal", "p");
    477             sMimeTypeMap.loadEntry("text/x-pascal", "pas");
    478             sMimeTypeMap.loadEntry("text/x-pcs-gcd", "gcd");
    479             sMimeTypeMap.loadEntry("text/x-setext", "etx");
    480             sMimeTypeMap.loadEntry("text/x-tcl", "tcl");
    481             sMimeTypeMap.loadEntry("text/x-tex", "tex");
    482             sMimeTypeMap.loadEntry("text/x-tex", "ltx");
    483             sMimeTypeMap.loadEntry("text/x-tex", "sty");
    484             sMimeTypeMap.loadEntry("text/x-tex", "cls");
    485             sMimeTypeMap.loadEntry("text/x-vcalendar", "vcs");
    486             sMimeTypeMap.loadEntry("text/x-vcard", "vcf");
    487             sMimeTypeMap.loadEntry("video/3gpp", "3gpp");
    488             sMimeTypeMap.loadEntry("video/3gpp", "3gp");
    489             sMimeTypeMap.loadEntry("video/3gpp", "3g2");
    490             sMimeTypeMap.loadEntry("video/dl", "dl");
    491             sMimeTypeMap.loadEntry("video/dv", "dif");
    492             sMimeTypeMap.loadEntry("video/dv", "dv");
    493             sMimeTypeMap.loadEntry("video/fli", "fli");
    494             sMimeTypeMap.loadEntry("video/m4v", "m4v");
    495             sMimeTypeMap.loadEntry("video/mpeg", "mpeg");
    496             sMimeTypeMap.loadEntry("video/mpeg", "mpg");
    497             sMimeTypeMap.loadEntry("video/mpeg", "mpe");
    498             sMimeTypeMap.loadEntry("video/mp4", "mp4");
    499             sMimeTypeMap.loadEntry("video/mpeg", "VOB");
    500             sMimeTypeMap.loadEntry("video/quicktime", "qt");
    501             sMimeTypeMap.loadEntry("video/quicktime", "mov");
    502             sMimeTypeMap.loadEntry("video/vnd.mpegurl", "mxu");
    503             sMimeTypeMap.loadEntry("video/x-la-asf", "lsf");
    504             sMimeTypeMap.loadEntry("video/x-la-asf", "lsx");
    505             sMimeTypeMap.loadEntry("video/x-mng", "mng");
    506             sMimeTypeMap.loadEntry("video/x-ms-asf", "asf");
    507             sMimeTypeMap.loadEntry("video/x-ms-asf", "asx");
    508             sMimeTypeMap.loadEntry("video/x-ms-wm", "wm");
    509             sMimeTypeMap.loadEntry("video/x-ms-wmv", "wmv");
    510             sMimeTypeMap.loadEntry("video/x-ms-wmx", "wmx");
    511             sMimeTypeMap.loadEntry("video/x-ms-wvx", "wvx");
    512             sMimeTypeMap.loadEntry("video/x-msvideo", "avi");
    513             sMimeTypeMap.loadEntry("video/x-sgi-movie", "movie");
    514             sMimeTypeMap.loadEntry("x-conference/x-cooltalk", "ice");
    515             sMimeTypeMap.loadEntry("x-epoc/x-sisx-app", "sisx");
    516         }
    517 
    518         return sMimeTypeMap;
    519     }
    520 }
    521