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/* * Copyright (C) 2010 The Android Open Source Project */*from w w w . ja v a2 s . c o m*/ * Licensed 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 com.common.methods; import android.annotation.SuppressLint; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.util.HashMap; import java.util.Map; import java.util.Properties; /** * Utilities for dealing with MIME types. * Used to implement java.net.URLConnection and android.webkit.MimeTypeMap. */ public final class MimeUtils { private static final Map<String, String> mimeTypeToExtensionMap = new HashMap<String, String>(); private static final Map<String, String> extensionToMimeTypeMap = new HashMap<String, String>(); static { // The following table is based on /etc/mime.types data minus // chemical/* MIME types and MIME types that don't map to any // file extensions. We also exclude top-level domain names to // deal with cases like: // // mail.google.com/a/google.com // // and "active" MIME types (due to potential security issues). add("application/andrew-inset", "ez"); add("application/dsptype", "tsp"); add("application/futuresplash", "spl"); add("application/hta", "hta"); add("application/mac-binhex40", "hqx"); add("application/mac-compactpro", "cpt"); add("application/mathematica", "nb"); add("application/msaccess", "mdb"); add("application/oda", "oda"); add("application/ogg", "ogg"); add("application/pdf", "pdf"); add("application/pgp-keys", "key"); add("application/pgp-signature", "pgp"); add("application/pics-rules", "prf"); add("application/rar", "rar"); add("application/rdf+xml", "rdf"); add("application/rss+xml", "rss"); add("application/zip", "zip"); add("application/vnd.android.package-archive", "apk"); add("application/vnd.cinderella", "cdy"); add("application/vnd.ms-pki.stl", "stl"); add("application/vnd.oasis.opendocument.database", "odb"); add("application/vnd.oasis.opendocument.formula", "odf"); add("application/vnd.oasis.opendocument.graphics", "odg"); add("application/vnd.oasis.opendocument.graphics-template", "otg"); add("application/vnd.oasis.opendocument.image", "odi"); add("application/vnd.oasis.opendocument.spreadsheet", "ods"); add("application/vnd.oasis.opendocument.spreadsheet-template", "ots"); add("application/vnd.oasis.opendocument.text", "odt"); add("application/vnd.oasis.opendocument.text-master", "odm"); add("application/vnd.oasis.opendocument.text-template", "ott"); add("application/vnd.oasis.opendocument.text-web", "oth"); add("application/vnd.google-earth.kml+xml", "kml"); add("application/vnd.google-earth.kmz", "kmz"); add("application/msword", "doc"); add("application/msword", "dot"); add("application/vnd.openxmlformats-officedocument.wordprocessingml.document", "docx"); add("application/vnd.openxmlformats-officedocument.wordprocessingml.template", "dotx"); add("application/vnd.ms-excel", "xls"); add("application/vnd.ms-excel", "xlt"); add("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "xlsx"); add("application/vnd.openxmlformats-officedocument.spreadsheetml.template", "xltx"); add("application/vnd.ms-powerpoint", "ppt"); add("application/vnd.ms-powerpoint", "pot"); add("application/vnd.ms-powerpoint", "pps"); add("application/vnd.openxmlformats-officedocument.presentationml.presentation", "pptx"); add("application/vnd.openxmlformats-officedocument.presentationml.template", "potx"); add("application/vnd.openxmlformats-officedocument.presentationml.slideshow", "ppsx"); add("application/vnd.rim.cod", "cod"); add("application/vnd.smaf", "mmf"); add("application/vnd.stardivision.calc", "sdc"); add("application/vnd.stardivision.draw", "sda"); add("application/vnd.stardivision.impress", "sdd"); add("application/vnd.stardivision.impress", "sdp"); add("application/vnd.stardivision.math", "smf"); add("application/vnd.stardivision.writer", "sdw"); add("application/vnd.stardivision.writer", "vor"); add("application/vnd.stardivision.writer-global", "sgl"); add("application/vnd.sun.xml.calc", "sxc"); add("application/vnd.sun.xml.calc.template", "stc"); add("application/vnd.sun.xml.draw", "sxd"); add("application/vnd.sun.xml.draw.template", "std"); add("application/vnd.sun.xml.impress", "sxi"); add("application/vnd.sun.xml.impress.template", "sti"); add("application/vnd.sun.xml.math", "sxm"); add("application/vnd.sun.xml.writer", "sxw"); add("application/vnd.sun.xml.writer.global", "sxg"); add("application/vnd.sun.xml.writer.template", "stw"); add("application/vnd.visio", "vsd"); add("application/x-abiword", "abw"); add("application/x-apple-diskimage", "dmg"); add("application/x-bcpio", "bcpio"); add("application/x-bittorrent", "torrent"); add("application/x-cdf", "cdf"); add("application/x-cdlink", "vcd"); add("application/x-chess-pgn", "pgn"); add("application/x-cpio", "cpio"); add("application/x-debian-package", "deb"); add("application/x-debian-package", "udeb"); add("application/x-director", "dcr"); add("application/x-director", "dir"); add("application/x-director", "dxr"); add("application/x-dms", "dms"); add("application/x-doom", "wad"); add("application/x-dvi", "dvi"); add("application/x-flac", "flac"); add("application/x-font", "pfa"); add("application/x-font", "pfb"); add("application/x-font", "gsf"); add("application/x-font", "pcf"); add("application/x-font", "pcf.Z"); add("application/x-freemind", "mm"); add("application/x-futuresplash", "spl"); add("application/x-gnumeric", "gnumeric"); add("application/x-go-sgf", "sgf"); add("application/x-graphing-calculator", "gcf"); add("application/x-gtar", "gtar"); add("application/x-gtar", "tgz"); add("application/x-gtar", "taz"); add("application/x-hdf", "hdf"); add("application/x-ica", "ica"); add("application/x-internet-signup", "ins"); add("application/x-internet-signup", "isp"); add("application/x-iphone", "iii"); add("application/x-iso9660-image", "iso"); add("application/x-jmol", "jmz"); add("application/x-kchart", "chrt"); add("application/x-killustrator", "kil"); add("application/x-koan", "skp"); add("application/x-koan", "skd"); add("application/x-koan", "skt"); add("application/x-koan", "skm"); add("application/x-kpresenter", "kpr"); add("application/x-kpresenter", "kpt"); add("application/x-kspread", "ksp"); add("application/x-kword", "kwd"); add("application/x-kword", "kwt"); add("application/x-latex", "latex"); add("application/x-lha", "lha"); add("application/x-lzh", "lzh"); add("application/x-lzx", "lzx"); add("application/x-maker", "frm"); add("application/x-maker", "maker"); add("application/x-maker", "frame"); add("application/x-maker", "fb"); add("application/x-maker", "book"); add("application/x-maker", "fbdoc"); add("application/x-mif", "mif"); add("application/x-ms-wmd", "wmd"); add("application/x-ms-wmz", "wmz"); add("application/x-msi", "msi"); add("application/x-ns-proxy-autoconfig", "pac"); add("application/x-nwc", "nwc"); add("application/x-object", "o"); add("application/x-oz-application", "oza"); add("application/x-pkcs12", "p12"); add("application/x-pkcs12", "pfx"); add("application/x-pkcs7-certreqresp", "p7r"); add("application/x-pkcs7-crl", "crl"); add("application/x-quicktimeplayer", "qtl"); add("application/x-shar", "shar"); add("application/x-shockwave-flash", "swf"); add("application/x-stuffit", "sit"); add("application/x-sv4cpio", "sv4cpio"); add("application/x-sv4crc", "sv4crc"); add("application/x-tar", "tar"); add("application/x-texinfo", "texinfo"); add("application/x-texinfo", "texi"); add("application/x-troff", "t"); add("application/x-troff", "roff"); add("application/x-troff-man", "man"); add("application/x-ustar", "ustar"); add("application/x-wais-source", "src"); add("application/x-wingz", "wz"); add("application/x-webarchive", "webarchive"); add("application/x-webarchive-xml", "webarchivexml"); add("application/x-x509-ca-cert", "crt"); add("application/x-x509-user-cert", "crt"); add("application/x-xcf", "xcf"); add("application/x-xfig", "fig"); add("application/xhtml+xml", "xhtml"); add("audio/3gpp", "3gpp"); add("audio/amr", "amr"); add("audio/basic", "snd"); add("audio/midi", "mid"); add("audio/midi", "midi"); add("audio/midi", "kar"); add("audio/midi", "xmf"); add("audio/mobile-xmf", "mxmf"); add("audio/mpeg", "mpga"); add("audio/mpeg", "mpega"); add("audio/mpeg", "mp2"); add("audio/mpeg", "mp3"); add("audio/mpeg", "m4a"); add("audio/mpegurl", "m3u"); add("audio/prs.sid", "sid"); add("audio/x-aiff", "aif"); add("audio/x-aiff", "aiff"); add("audio/x-aiff", "aifc"); add("audio/x-gsm", "gsm"); add("audio/x-mpegurl", "m3u"); add("audio/x-ms-wma", "wma"); add("audio/x-ms-wax", "wax"); add("audio/x-pn-realaudio", "ra"); add("audio/x-pn-realaudio", "rm"); add("audio/x-pn-realaudio", "ram"); add("audio/x-realaudio", "ra"); add("audio/x-scpls", "pls"); add("audio/x-sd2", "sd2"); add("audio/x-wav", "wav"); add("image/bmp", "bmp"); add("image/gif", "gif"); add("image/ico", "cur"); add("image/ico", "ico"); add("image/ief", "ief"); add("image/jpeg", "jpeg"); add("image/jpeg", "jpg"); add("image/jpeg", "jpe"); add("image/pcx", "pcx"); add("image/png", "png"); add("image/svg+xml", "svg"); add("image/svg+xml", "svgz"); add("image/tiff", "tiff"); add("image/tiff", "tif"); add("image/vnd.djvu", "djvu"); add("image/vnd.djvu", "djv"); add("image/vnd.wap.wbmp", "wbmp"); add("image/x-cmu-raster", "ras"); add("image/x-coreldraw", "cdr"); add("image/x-coreldrawpattern", "pat"); add("image/x-coreldrawtemplate", "cdt"); add("image/x-corelphotopaint", "cpt"); add("image/x-icon", "ico"); add("image/x-jg", "art"); add("image/x-jng", "jng"); add("image/x-ms-bmp", "bmp"); add("image/x-photoshop", "psd"); add("image/x-portable-anymap", "pnm"); add("image/x-portable-bitmap", "pbm"); add("image/x-portable-graymap", "pgm"); add("image/x-portable-pixmap", "ppm"); add("image/x-rgb", "rgb"); add("image/x-xbitmap", "xbm"); add("image/x-xpixmap", "xpm"); add("image/x-xwindowdump", "xwd"); add("model/iges", "igs"); add("model/iges", "iges"); add("model/mesh", "msh"); add("model/mesh", "mesh"); add("model/mesh", "silo"); add("text/calendar", "ics"); add("text/calendar", "icz"); add("text/comma-separated-values", "csv"); add("text/css", "css"); add("text/html", "htm"); add("text/html", "html"); add("text/h323", "323"); add("text/iuls", "uls"); add("text/mathml", "mml"); // add ".txt" first so it will be the default for ExtensionFromMimeType add("text/plain", "txt"); add("text/plain", "asc"); add("text/plain", "text"); add("text/plain", "diff"); add("text/plain", "po"); // reserve "pot" for vnd.ms-powerpoint add("text/richtext", "rtx"); add("text/rtf", "rtf"); add("text/texmacs", "ts"); add("text/text", "phps"); add("text/tab-separated-values", "tsv"); add("text/xml", "xml"); add("text/x-bibtex", "bib"); add("text/x-boo", "boo"); add("text/x-c++hdr", "h++"); add("text/x-c++hdr", "hpp"); add("text/x-c++hdr", "hxx"); add("text/x-c++hdr", "hh"); add("text/x-c++src", "c++"); add("text/x-c++src", "cpp"); add("text/x-c++src", "cxx"); add("text/x-chdr", "h"); add("text/x-component", "htc"); add("text/x-csh", "csh"); add("text/x-csrc", "c"); add("text/x-dsrc", "d"); add("text/x-haskell", "hs"); add("text/x-java", "java"); add("text/x-literate-haskell", "lhs"); add("text/x-moc", "moc"); add("text/x-pascal", "p"); add("text/x-pascal", "pas"); add("text/x-pcs-gcd", "gcd"); add("text/x-setext", "etx"); add("text/x-tcl", "tcl"); add("text/x-tex", "tex"); add("text/x-tex", "ltx"); add("text/x-tex", "sty"); add("text/x-tex", "cls"); add("text/x-vcalendar", "vcs"); add("text/x-vcard", "vcf"); add("video/3gpp", "3gpp"); add("video/3gpp", "3gp"); add("video/3gpp", "3g2"); add("video/dl", "dl"); add("video/dv", "dif"); add("video/dv", "dv"); add("video/fli", "fli"); add("video/m4v", "m4v"); add("video/mpeg", "mpeg"); add("video/mpeg", "mpg"); add("video/mpeg", "mpe"); add("video/mp4", "mp4"); add("video/flv", "flv"); add("video/mpeg", "VOB"); add("video/quicktime", "qt"); add("video/quicktime", "mov"); add("video/vnd.mpegurl", "mxu"); add("video/x-la-asf", "lsf"); add("video/x-la-asf", "lsx"); add("video/x-mng", "mng"); add("video/x-ms-asf", "asf"); add("video/x-ms-asf", "asx"); add("video/x-ms-wm", "wm"); add("video/x-ms-wmv", "wmv"); add("video/x-ms-wmx", "wmx"); add("video/x-ms-wvx", "wvx"); add("video/x-msvideo", "avi"); add("video/x-sgi-movie", "movie"); add("x-conference/x-cooltalk", "ice"); add("x-epoc/x-sisx-app", "sisx"); applyOverrides(); } private static void add(String mimeType, String extension) { // // if we have an existing x --> y mapping, we do not want to // override it with another mapping x --> ? // this is mostly because of the way the mime-type map below // is constructed (if a mime type maps to several extensions // the first extension is considered the most popular and is // added first; we do not want to overwrite it later). // if (!mimeTypeToExtensionMap.containsKey(mimeType)) { mimeTypeToExtensionMap.put(mimeType, extension); } extensionToMimeTypeMap.put(extension, mimeType); } private static InputStream getContentTypesPropertiesStream() { // User override? String userTable = System.getProperty("content.types.user.table"); if (userTable != null) { File f = new File(userTable); if (f.exists()) { try { return new FileInputStream(f); } catch (IOException ignored) { } } } // Standard location? File f = new File(System.getProperty("java.home"), "lib" + File.separator + "content-types.properties"); if (f.exists()) { try { return new FileInputStream(f); } catch (IOException ignored) { } } return null; } /** * This isn't what the RI does. The RI doesn't have hard-coded defaults, so supplying your * own "content.types.user.table" means you don't get any of the built-ins, and the built-ins * come from "$JAVA_HOME/lib/content-types.properties". */ private static void applyOverrides() { // Get the appropriate InputStream to read overrides from, if any. InputStream stream = getContentTypesPropertiesStream(); if (stream == null) { return; } try { try { // Read the properties file... Properties overrides = new Properties(); overrides.load(stream); // And translate its mapping to ours... for (Map.Entry<Object, Object> entry : overrides.entrySet()) { String extension = (String) entry.getKey(); String mimeType = (String) entry.getValue(); add(mimeType, extension); } } finally { stream.close(); } } catch (IOException ignored) { } } private MimeUtils() { } /** * Returns true if the given MIME type has an entry in the map. * @param mimeType A MIME type (i.e. text/plain) * @return True iff there is a mimeType entry in the map. */ @SuppressLint("NewApi") public static boolean hasMimeType(String mimeType) { if (mimeType == null || mimeType.isEmpty()) { return false; } return mimeTypeToExtensionMap.containsKey(mimeType); } /** * Returns the MIME type for the given extension. * @param extension A file extension without the leading '.' * @return The MIME type for the given extension or null iff there is none. */ @SuppressLint("NewApi") public static String guessMimeTypeFromExtension(String extension) { if (extension == null || extension.isEmpty()) { return null; } return extensionToMimeTypeMap.get(extension); } /** * Returns true if the given extension has a registered MIME type. * @param extension A file extension without the leading '.' * @return True iff there is an extension entry in the map. */ @SuppressLint("NewApi") public static boolean hasExtension(String extension) { if (extension == null || extension.isEmpty()) { return false; } return extensionToMimeTypeMap.containsKey(extension); } /** * Returns the registered extension for the given MIME type. Note that some * MIME types map to multiple extensions. This call will return the most * common extension for the given MIME type. * @param mimeType A MIME type (i.e. text/plain) * @return The extension for the given MIME type or null iff there is none. */ @SuppressLint("NewApi") public static String guessExtensionFromMimeType(String mimeType) { if (mimeType == null || mimeType.isEmpty()) { return null; } return mimeTypeToExtensionMap.get(mimeType); } }