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MediaType.java
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MediaType.java
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/*
* Copyright (C) 2011 The Guava Authors
*
* 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.google.common.net;
import static com.google.common.base.CharMatcher.ascii;
import static com.google.common.base.CharMatcher.javaIsoControl;
import static com.google.common.base.Charsets.UTF_8;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import com.google.common.annotations.Beta;
import com.google.common.annotations.GwtCompatible;
import com.google.common.base.Ascii;
import com.google.common.base.CharMatcher;
import com.google.common.base.Function;
import com.google.common.base.Joiner;
import com.google.common.base.Joiner.MapJoiner;
import com.google.common.base.MoreObjects;
import com.google.common.base.Objects;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableListMultimap;
import com.google.common.collect.ImmutableMultiset;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;
import com.google.common.collect.Multimap;
import com.google.common.collect.Multimaps;
import com.google.errorprone.annotations.Immutable;
import com.google.errorprone.annotations.concurrent.LazyInit;
import java.nio.charset.Charset;
import java.nio.charset.IllegalCharsetNameException;
import java.nio.charset.UnsupportedCharsetException;
import java.util.Collection;
import java.util.Map;
import java.util.Map.Entry;
import org.checkerframework.checker.nullness.compatqual.NullableDecl;
/**
* Represents an <a href="http://en.wikipedia.org/wiki/Internet_media_type">Internet Media Type</a>
* (also known as a MIME Type or Content Type). This class also supports the concept of media ranges
* <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1">defined by HTTP/1.1</a>.
* As such, the {@code *} character is treated as a wildcard and is used to represent any acceptable
* type or subtype value. A media type may not have wildcard type with a declared subtype. The
* {@code *} character has no special meaning as part of a parameter. All values for type, subtype,
* parameter attributes or parameter values must be valid according to RFCs <a
* href="https://tools.ietf.org/html/rfc2045">2045</a> and <a
* href="https://tools.ietf.org/html/rfc2046">2046</a>.
*
* <p>All portions of the media type that are case-insensitive (type, subtype, parameter attributes)
* are normalized to lowercase. The value of the {@code charset} parameter is normalized to
* lowercase, but all others are left as-is.
*
* <p>Note that this specifically does <strong>not</strong> represent the value of the MIME {@code
* Content-Type} header and as such has no support for header-specific considerations such as line
* folding and comments.
*
* <p>For media types that take a charset the predefined constants default to UTF-8 and have a
* "_UTF_8" suffix. To get a version without a character set, use {@link #withoutParameters}.
*
* @since 12.0
* @author Gregory Kick
*/
@Beta
@GwtCompatible
@Immutable
public final class MediaType {
private static final String CHARSET_ATTRIBUTE = "charset";
private static final ImmutableListMultimap<String, String> UTF_8_CONSTANT_PARAMETERS =
ImmutableListMultimap.of(CHARSET_ATTRIBUTE, Ascii.toLowerCase(UTF_8.name()));
/** Matcher for type, subtype and attributes. */
private static final CharMatcher TOKEN_MATCHER =
ascii()
.and(javaIsoControl().negate())
.and(CharMatcher.isNot(' '))
.and(CharMatcher.noneOf("()<>@,;:\\\"/[]?="));
private static final CharMatcher QUOTED_TEXT_MATCHER = ascii().and(CharMatcher.noneOf("\"\\\r"));
/*
* This matches the same characters as linear-white-space from RFC 822, but we make no effort to
* enforce any particular rules with regards to line folding as stated in the class docs.
*/
private static final CharMatcher LINEAR_WHITE_SPACE = CharMatcher.anyOf(" \t\r\n");
// TODO(gak): make these public?
private static final String APPLICATION_TYPE = "application";
private static final String AUDIO_TYPE = "audio";
private static final String IMAGE_TYPE = "image";
private static final String TEXT_TYPE = "text";
private static final String VIDEO_TYPE = "video";
private static final String FONT_TYPE = "font";
private static final String WILDCARD = "*";
private static final Map<MediaType, MediaType> KNOWN_TYPES = Maps.newHashMap();
private static MediaType createConstant(String type, String subtype) {
MediaType mediaType =
addKnownType(new MediaType(type, subtype, ImmutableListMultimap.<String, String>of()));
mediaType.parsedCharset = Optional.absent();
return mediaType;
}
private static MediaType createConstantUtf8(String type, String subtype) {
MediaType mediaType = addKnownType(new MediaType(type, subtype, UTF_8_CONSTANT_PARAMETERS));
mediaType.parsedCharset = Optional.of(UTF_8);
return mediaType;
}
private static MediaType addKnownType(MediaType mediaType) {
KNOWN_TYPES.put(mediaType, mediaType);
return mediaType;
}
/*
* The following constants are grouped by their type and ordered alphabetically by the constant
* name within that type. The constant name should be a sensible identifier that is closest to the
* "common name" of the media. This is often, but not necessarily the same as the subtype.
*
* Be sure to declare all constants with the type and subtype in all lowercase. For types that
* take a charset (e.g. all text/* types), default to UTF-8 and suffix the constant name with
* "_UTF_8".
*/
public static final MediaType ANY_TYPE = createConstant(WILDCARD, WILDCARD);
public static final MediaType ANY_TEXT_TYPE = createConstant(TEXT_TYPE, WILDCARD);
public static final MediaType ANY_IMAGE_TYPE = createConstant(IMAGE_TYPE, WILDCARD);
public static final MediaType ANY_AUDIO_TYPE = createConstant(AUDIO_TYPE, WILDCARD);
public static final MediaType ANY_VIDEO_TYPE = createConstant(VIDEO_TYPE, WILDCARD);
public static final MediaType ANY_APPLICATION_TYPE = createConstant(APPLICATION_TYPE, WILDCARD);
/**
* Wildcard matching any "font" top-level media type.
*
* @since 30.0
*/
public static final MediaType ANY_FONT_TYPE = createConstant(FONT_TYPE, WILDCARD);
/* text types */
public static final MediaType CACHE_MANIFEST_UTF_8 =
createConstantUtf8(TEXT_TYPE, "cache-manifest");
public static final MediaType CSS_UTF_8 = createConstantUtf8(TEXT_TYPE, "css");
public static final MediaType CSV_UTF_8 = createConstantUtf8(TEXT_TYPE, "csv");
public static final MediaType HTML_UTF_8 = createConstantUtf8(TEXT_TYPE, "html");
public static final MediaType I_CALENDAR_UTF_8 = createConstantUtf8(TEXT_TYPE, "calendar");
public static final MediaType PLAIN_TEXT_UTF_8 = createConstantUtf8(TEXT_TYPE, "plain");
/**
* <a href="http://www.rfc-editor.org/rfc/rfc4329.txt">RFC 4329</a> declares {@link
* #JAVASCRIPT_UTF_8 application/javascript} to be the correct media type for JavaScript, but this
* may be necessary in certain situations for compatibility.
*/
public static final MediaType TEXT_JAVASCRIPT_UTF_8 = createConstantUtf8(TEXT_TYPE, "javascript");
/**
* <a href="http://www.iana.org/assignments/media-types/text/tab-separated-values">Tab separated
* values</a>.
*
* @since 15.0
*/
public static final MediaType TSV_UTF_8 = createConstantUtf8(TEXT_TYPE, "tab-separated-values");
public static final MediaType VCARD_UTF_8 = createConstantUtf8(TEXT_TYPE, "vcard");
/**
* UTF-8 encoded <a href="https://en.wikipedia.org/wiki/Wireless_Markup_Language">Wireless Markup
* Language</a>.
*
* @since 13.0
*/
public static final MediaType WML_UTF_8 = createConstantUtf8(TEXT_TYPE, "vnd.wap.wml");
/**
* As described in <a href="http://www.ietf.org/rfc/rfc3023.txt">RFC 3023</a>, this constant
* ({@code text/xml}) is used for XML documents that are "readable by casual users." {@link
* #APPLICATION_XML_UTF_8} is provided for documents that are intended for applications.
*/
public static final MediaType XML_UTF_8 = createConstantUtf8(TEXT_TYPE, "xml");
/**
* As described in <a href="https://w3c.github.io/webvtt/#iana-text-vtt">the VTT spec</a>, this is
* used for Web Video Text Tracks (WebVTT) files, used with the HTML5 track element.
*
* @since 20.0
*/
public static final MediaType VTT_UTF_8 = createConstantUtf8(TEXT_TYPE, "vtt");
/* image types */
/**
* <a href="https://en.wikipedia.org/wiki/BMP_file_format">Bitmap file format</a> ({@code bmp}
* files).
*
* @since 13.0
*/
public static final MediaType BMP = createConstant(IMAGE_TYPE, "bmp");
/**
* The <a href="https://en.wikipedia.org/wiki/Camera_Image_File_Format">Canon Image File
* Format</a> ({@code crw} files), a widely-used "raw image" format for cameras. It is found in
* {@code /etc/mime.types}, e.g. in <a href=
* "http://anonscm.debian.org/gitweb/?p=collab-maint/mime-support.git;a=blob;f=mime.types;hb=HEAD"
* >Debian 3.48-1</a>.
*
* @since 15.0
*/
public static final MediaType CRW = createConstant(IMAGE_TYPE, "x-canon-crw");
public static final MediaType GIF = createConstant(IMAGE_TYPE, "gif");
public static final MediaType ICO = createConstant(IMAGE_TYPE, "vnd.microsoft.icon");
public static final MediaType JPEG = createConstant(IMAGE_TYPE, "jpeg");
public static final MediaType PNG = createConstant(IMAGE_TYPE, "png");
/**
* The Photoshop File Format ({@code psd} files) as defined by <a
* href="http://www.iana.org/assignments/media-types/image/vnd.adobe.photoshop">IANA</a>, and
* found in {@code /etc/mime.types}, e.g. <a
* href="http://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x/conf/mime.types"></a> of the
* Apache <a href="http://httpd.apache.org/">HTTPD project</a>; for the specification, see <a
* href="http://www.adobe.com/devnet-apps/photoshop/fileformatashtml/PhotoshopFileFormats.htm">
* Adobe Photoshop Document Format</a> and <a
* href="http://en.wikipedia.org/wiki/Adobe_Photoshop#File_format">Wikipedia</a>; this is the
* regular output/input of Photoshop (which can also export to various image formats; note that
* files with extension "PSB" are in a distinct but related format).
*
* <p>This is a more recent replacement for the older, experimental type {@code x-photoshop}: <a
* href="http://tools.ietf.org/html/rfc2046#section-6">RFC-2046.6</a>.
*
* @since 15.0
*/
public static final MediaType PSD = createConstant(IMAGE_TYPE, "vnd.adobe.photoshop");
public static final MediaType SVG_UTF_8 = createConstantUtf8(IMAGE_TYPE, "svg+xml");
public static final MediaType TIFF = createConstant(IMAGE_TYPE, "tiff");
/**
* <a href="https://en.wikipedia.org/wiki/WebP">WebP image format</a>.
*
* @since 13.0
*/
public static final MediaType WEBP = createConstant(IMAGE_TYPE, "webp");
/**
* <a href="https://www.iana.org/assignments/media-types/image/heif">HEIF image format</a>.
*
* @since 28.1
*/
public static final MediaType HEIF = createConstant(IMAGE_TYPE, "heif");
/**
* <a href="https://tools.ietf.org/html/rfc3745">JP2K image format</a>.
*
* @since 28.1
*/
public static final MediaType JP2K = createConstant(IMAGE_TYPE, "jp2");
/* audio types */
public static final MediaType MP4_AUDIO = createConstant(AUDIO_TYPE, "mp4");
public static final MediaType MPEG_AUDIO = createConstant(AUDIO_TYPE, "mpeg");
public static final MediaType OGG_AUDIO = createConstant(AUDIO_TYPE, "ogg");
public static final MediaType WEBM_AUDIO = createConstant(AUDIO_TYPE, "webm");
/**
* L16 audio, as defined by <a href="https://tools.ietf.org/html/rfc2586">RFC 2586</a>.
*
* @since 24.1
*/
public static final MediaType L16_AUDIO = createConstant(AUDIO_TYPE, "l16");
/**
* L24 audio, as defined by <a href="https://tools.ietf.org/html/rfc3190">RFC 3190</a>.
*
* @since 20.0
*/
public static final MediaType L24_AUDIO = createConstant(AUDIO_TYPE, "l24");
/**
* Basic Audio, as defined by <a href="http://tools.ietf.org/html/rfc2046#section-4.3">RFC
* 2046</a>.
*
* @since 20.0
*/
public static final MediaType BASIC_AUDIO = createConstant(AUDIO_TYPE, "basic");
/**
* Advanced Audio Coding. For more information, see <a
* href="https://en.wikipedia.org/wiki/Advanced_Audio_Coding">Advanced Audio Coding</a>.
*
* @since 20.0
*/
public static final MediaType AAC_AUDIO = createConstant(AUDIO_TYPE, "aac");
/**
* Vorbis Audio, as defined by <a href="http://tools.ietf.org/html/rfc5215">RFC 5215</a>.
*
* @since 20.0
*/
public static final MediaType VORBIS_AUDIO = createConstant(AUDIO_TYPE, "vorbis");
/**
* Windows Media Audio. For more information, see <a
* href="https://msdn.microsoft.com/en-us/library/windows/desktop/dd562994(v=vs.85).aspx">file
* name extensions for Windows Media metafiles</a>.
*
* @since 20.0
*/
public static final MediaType WMA_AUDIO = createConstant(AUDIO_TYPE, "x-ms-wma");
/**
* Windows Media metafiles. For more information, see <a
* href="https://msdn.microsoft.com/en-us/library/windows/desktop/dd562994(v=vs.85).aspx">file
* name extensions for Windows Media metafiles</a>.
*
* @since 20.0
*/
public static final MediaType WAX_AUDIO = createConstant(AUDIO_TYPE, "x-ms-wax");
/**
* Real Audio. For more information, see <a
* href="http://service.real.com/help/faq/rp8/configrp8win.html">this link</a>.
*
* @since 20.0
*/
public static final MediaType VND_REAL_AUDIO = createConstant(AUDIO_TYPE, "vnd.rn-realaudio");
/**
* WAVE format, as defined by <a href="https://tools.ietf.org/html/rfc2361">RFC 2361</a>.
*
* @since 20.0
*/
public static final MediaType VND_WAVE_AUDIO = createConstant(AUDIO_TYPE, "vnd.wave");
/* video types */
public static final MediaType MP4_VIDEO = createConstant(VIDEO_TYPE, "mp4");
public static final MediaType MPEG_VIDEO = createConstant(VIDEO_TYPE, "mpeg");
public static final MediaType OGG_VIDEO = createConstant(VIDEO_TYPE, "ogg");
public static final MediaType QUICKTIME = createConstant(VIDEO_TYPE, "quicktime");
public static final MediaType WEBM_VIDEO = createConstant(VIDEO_TYPE, "webm");
public static final MediaType WMV = createConstant(VIDEO_TYPE, "x-ms-wmv");
/**
* Flash video. For more information, see <a href=
* "http://help.adobe.com/en_US/ActionScript/3.0_ProgrammingAS3/WS5b3ccc516d4fbf351e63e3d118a9b90204-7d48.html"
* >this link</a>.
*
* @since 20.0
*/
public static final MediaType FLV_VIDEO = createConstant(VIDEO_TYPE, "x-flv");
/**
* The 3GP multimedia container format. For more information, see <a
* href="ftp://www.3gpp.org/tsg_sa/TSG_SA/TSGS_23/Docs/PDF/SP-040065.pdf#page=10">3GPP TS
* 26.244</a>.
*
* @since 20.0
*/
public static final MediaType THREE_GPP_VIDEO = createConstant(VIDEO_TYPE, "3gpp");
/**
* The 3G2 multimedia container format. For more information, see <a
* href="http://www.3gpp2.org/Public_html/specs/C.S0050-B_v1.0_070521.pdf#page=16">3GPP2
* C.S0050-B</a>.
*
* @since 20.0
*/
public static final MediaType THREE_GPP2_VIDEO = createConstant(VIDEO_TYPE, "3gpp2");
/* application types */
/**
* As described in <a href="http://www.ietf.org/rfc/rfc3023.txt">RFC 3023</a>, this constant
* ({@code application/xml}) is used for XML documents that are "unreadable by casual users."
* {@link #XML_UTF_8} is provided for documents that may be read by users.
*
* @since 14.0
*/
public static final MediaType APPLICATION_XML_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "xml");
public static final MediaType ATOM_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "atom+xml");
public static final MediaType BZIP2 = createConstant(APPLICATION_TYPE, "x-bzip2");
/**
* Files in the <a href="https://www.dartlang.org/articles/embedding-in-html/">dart</a>
* programming language.
*
* @since 19.0
*/
public static final MediaType DART_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "dart");
/**
* <a href="https://goo.gl/2QoMvg">Apple Passbook</a>.
*
* @since 19.0
*/
public static final MediaType APPLE_PASSBOOK =
createConstant(APPLICATION_TYPE, "vnd.apple.pkpass");
/**
* <a href="http://en.wikipedia.org/wiki/Embedded_OpenType">Embedded OpenType</a> fonts. This is
* <a href="http://www.iana.org/assignments/media-types/application/vnd.ms-fontobject">registered
* </a> with the IANA.
*
* @since 17.0
*/
public static final MediaType EOT = createConstant(APPLICATION_TYPE, "vnd.ms-fontobject");
/**
* As described in the <a href="http://idpf.org/epub">International Digital Publishing Forum</a>
* EPUB is the distribution and interchange format standard for digital publications and
* documents. This media type is defined in the <a
* href="http://www.idpf.org/epub/30/spec/epub30-ocf.html">EPUB Open Container Format</a>
* specification.
*
* @since 15.0
*/
public static final MediaType EPUB = createConstant(APPLICATION_TYPE, "epub+zip");
public static final MediaType FORM_DATA =
createConstant(APPLICATION_TYPE, "x-www-form-urlencoded");
/**
* As described in <a href="https://www.rsa.com/rsalabs/node.asp?id=2138">PKCS #12: Personal
* Information Exchange Syntax Standard</a>, PKCS #12 defines an archive file format for storing
* many cryptography objects as a single file.
*
* @since 15.0
*/
public static final MediaType KEY_ARCHIVE = createConstant(APPLICATION_TYPE, "pkcs12");
/**
* This is a non-standard media type, but is commonly used in serving hosted binary files as it is
* <a href="http://code.google.com/p/browsersec/wiki/Part2#Survey_of_content_sniffing_behaviors">
* known not to trigger content sniffing in current browsers</a>. It <i>should not</i> be used in
* other situations as it is not specified by any RFC and does not appear in the <a
* href="http://www.iana.org/assignments/media-types">/IANA MIME Media Types</a> list. Consider
* {@link #OCTET_STREAM} for binary data that is not being served to a browser.
*
* @since 14.0
*/
public static final MediaType APPLICATION_BINARY = createConstant(APPLICATION_TYPE, "binary");
/**
* Media type for the <a href="https://tools.ietf.org/html/rfc7946">GeoJSON Format</a>, a
* geospatial data interchange format based on JSON.
*
* @since 28.0
*/
public static final MediaType GEO_JSON = createConstant(APPLICATION_TYPE, "geo+json");
public static final MediaType GZIP = createConstant(APPLICATION_TYPE, "x-gzip");
/**
* <a href="https://tools.ietf.org/html/draft-kelly-json-hal-08#section-3">JSON Hypertext
* Application Language (HAL) documents</a>.
*
* @since 26.0
*/
public static final MediaType HAL_JSON = createConstant(APPLICATION_TYPE, "hal+json");
/**
* <a href="http://www.rfc-editor.org/rfc/rfc4329.txt">RFC 4329</a> declares this to be the
* correct media type for JavaScript, but {@link #TEXT_JAVASCRIPT_UTF_8 text/javascript} may be
* necessary in certain situations for compatibility.
*/
public static final MediaType JAVASCRIPT_UTF_8 =
createConstantUtf8(APPLICATION_TYPE, "javascript");
/**
* For <a href="https://tools.ietf.org/html/rfc7515">JWS or JWE objects using the Compact
* Serialization</a>.
*
* @since 27.1
*/
public static final MediaType JOSE = createConstant(APPLICATION_TYPE, "jose");
/**
* For <a href="https://tools.ietf.org/html/rfc7515">JWS or JWE objects using the JSON
* Serialization</a>.
*
* @since 27.1
*/
public static final MediaType JOSE_JSON = createConstant(APPLICATION_TYPE, "jose+json");
public static final MediaType JSON_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "json");
/**
* The <a href="http://www.w3.org/TR/appmanifest/">Manifest for a web application</a>.
*
* @since 19.0
*/
public static final MediaType MANIFEST_JSON_UTF_8 =
createConstantUtf8(APPLICATION_TYPE, "manifest+json");
/**
* <a href="http://www.opengeospatial.org/standards/kml/">OGC KML (Keyhole Markup Language)</a>.
*/
public static final MediaType KML = createConstant(APPLICATION_TYPE, "vnd.google-earth.kml+xml");
/**
* <a href="http://www.opengeospatial.org/standards/kml/">OGC KML (Keyhole Markup Language)</a>,
* compressed using the ZIP format into KMZ archives.
*/
public static final MediaType KMZ = createConstant(APPLICATION_TYPE, "vnd.google-earth.kmz");
/**
* The <a href="https://tools.ietf.org/html/rfc4155">mbox database format</a>.
*
* @since 13.0
*/
public static final MediaType MBOX = createConstant(APPLICATION_TYPE, "mbox");
/**
* <a href="http://goo.gl/1pGBFm">Apple over-the-air mobile configuration profiles</a>.
*
* @since 18.0
*/
public static final MediaType APPLE_MOBILE_CONFIG =
createConstant(APPLICATION_TYPE, "x-apple-aspen-config");
/** <a href="http://goo.gl/XDQ1h2">Microsoft Excel</a> spreadsheets. */
public static final MediaType MICROSOFT_EXCEL = createConstant(APPLICATION_TYPE, "vnd.ms-excel");
/**
* <a href="http://goo.gl/XrTEqG">Microsoft Outlook</a> items.
*
* @since 27.1
*/
public static final MediaType MICROSOFT_OUTLOOK =
createConstant(APPLICATION_TYPE, "vnd.ms-outlook");
/** <a href="http://goo.gl/XDQ1h2">Microsoft Powerpoint</a> presentations. */
public static final MediaType MICROSOFT_POWERPOINT =
createConstant(APPLICATION_TYPE, "vnd.ms-powerpoint");
/** <a href="http://goo.gl/XDQ1h2">Microsoft Word</a> documents. */
public static final MediaType MICROSOFT_WORD = createConstant(APPLICATION_TYPE, "msword");
/**
* Media type for <a
* href="https://en.wikipedia.org/wiki/Dynamic_Adaptive_Streaming_over_HTTP">Dynamic Adaptive
* Streaming over HTTP (DASH)</a>. This is <a
* href="https://www.iana.org/assignments/media-types/application/dash+xml">registered</a> with
* the IANA.
*
* @since 28.2
*/
public static final MediaType MEDIA_PRESENTATION_DESCRIPTION =
createConstant(APPLICATION_TYPE, "dash+xml");
/**
* WASM applications. For more information see <a href="https://webassembly.org/">the Web Assembly
* overview</a>.
*
* @since 27.0
*/
public static final MediaType WASM_APPLICATION = createConstant(APPLICATION_TYPE, "wasm");
/**
* NaCl applications. For more information see <a
* href="https://developer.chrome.com/native-client/devguide/coding/application-structure">the
* Developer Guide for Native Client Application Structure</a>.
*
* @since 20.0
*/
public static final MediaType NACL_APPLICATION = createConstant(APPLICATION_TYPE, "x-nacl");
/**
* NaCl portable applications. For more information see <a
* href="https://developer.chrome.com/native-client/devguide/coding/application-structure">the
* Developer Guide for Native Client Application Structure</a>.
*
* @since 20.0
*/
public static final MediaType NACL_PORTABLE_APPLICATION =
createConstant(APPLICATION_TYPE, "x-pnacl");
public static final MediaType OCTET_STREAM = createConstant(APPLICATION_TYPE, "octet-stream");
public static final MediaType OGG_CONTAINER = createConstant(APPLICATION_TYPE, "ogg");
public static final MediaType OOXML_DOCUMENT =
createConstant(
APPLICATION_TYPE, "vnd.openxmlformats-officedocument.wordprocessingml.document");
public static final MediaType OOXML_PRESENTATION =
createConstant(
APPLICATION_TYPE, "vnd.openxmlformats-officedocument.presentationml.presentation");
public static final MediaType OOXML_SHEET =
createConstant(APPLICATION_TYPE, "vnd.openxmlformats-officedocument.spreadsheetml.sheet");
public static final MediaType OPENDOCUMENT_GRAPHICS =
createConstant(APPLICATION_TYPE, "vnd.oasis.opendocument.graphics");
public static final MediaType OPENDOCUMENT_PRESENTATION =
createConstant(APPLICATION_TYPE, "vnd.oasis.opendocument.presentation");
public static final MediaType OPENDOCUMENT_SPREADSHEET =
createConstant(APPLICATION_TYPE, "vnd.oasis.opendocument.spreadsheet");
public static final MediaType OPENDOCUMENT_TEXT =
createConstant(APPLICATION_TYPE, "vnd.oasis.opendocument.text");
/**
* <a href="https://tools.ietf.org/id/draft-ellermann-opensearch-01.html">OpenSearch</a>
* Description files are XML files that describe how a website can be used as a search engine by
* consumers (e.g. web browsers).
*
* @since 28.2
*/
public static final MediaType OPENSEARCH_DESCRIPTION_UTF_8 =
createConstantUtf8(APPLICATION_TYPE, "opensearchdescription+xml");
public static final MediaType PDF = createConstant(APPLICATION_TYPE, "pdf");
public static final MediaType POSTSCRIPT = createConstant(APPLICATION_TYPE, "postscript");
/**
* <a href="http://tools.ietf.org/html/draft-rfernando-protocol-buffers-00">Protocol buffers</a>
*
* @since 15.0
*/
public static final MediaType PROTOBUF = createConstant(APPLICATION_TYPE, "protobuf");
/**
* <a href="https://en.wikipedia.org/wiki/RDF/XML">RDF/XML</a> documents, which are XML
* serializations of <a
* href="https://en.wikipedia.org/wiki/Resource_Description_Framework">Resource Description
* Framework</a> graphs.
*
* @since 14.0
*/
public static final MediaType RDF_XML_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "rdf+xml");
public static final MediaType RTF_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "rtf");
/**
* <a href="https://tools.ietf.org/html/rfc8081">RFC 8081</a> declares {@link #FONT_SFNT
* font/sfnt} to be the correct media type for SFNT, but this may be necessary in certain
* situations for compatibility.
*
* @since 17.0
*/
public static final MediaType SFNT = createConstant(APPLICATION_TYPE, "font-sfnt");
public static final MediaType SHOCKWAVE_FLASH =
createConstant(APPLICATION_TYPE, "x-shockwave-flash");
/**
* {@code skp} files produced by the 3D Modeling software <a
* href="https://www.sketchup.com/">SketchUp</a>
*
* @since 13.0
*/
public static final MediaType SKETCHUP = createConstant(APPLICATION_TYPE, "vnd.sketchup.skp");
/**
* As described in <a href="http://www.ietf.org/rfc/rfc3902.txt">RFC 3902</a>, this constant
* ({@code application/soap+xml}) is used to identify SOAP 1.2 message envelopes that have been
* serialized with XML 1.0.
*
* <p>For SOAP 1.1 messages, see {@code XML_UTF_8} per <a
* href="http://www.w3.org/TR/2000/NOTE-SOAP-20000508/">W3C Note on Simple Object Access Protocol
* (SOAP) 1.1</a>
*
* @since 20.0
*/
public static final MediaType SOAP_XML_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "soap+xml");
public static final MediaType TAR = createConstant(APPLICATION_TYPE, "x-tar");
/**
* <a href="https://tools.ietf.org/html/rfc8081">RFC 8081</a> declares {@link #FONT_WOFF
* font/woff} to be the correct media type for WOFF, but this may be necessary in certain
* situations for compatibility.
*
* @since 17.0
*/
public static final MediaType WOFF = createConstant(APPLICATION_TYPE, "font-woff");
/**
* <a href="https://tools.ietf.org/html/rfc8081">RFC 8081</a> declares {@link #FONT_WOFF2
* font/woff2} to be the correct media type for WOFF2, but this may be necessary in certain
* situations for compatibility.
*
* @since 20.0
*/
public static final MediaType WOFF2 = createConstant(APPLICATION_TYPE, "font-woff2");
public static final MediaType XHTML_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "xhtml+xml");
/**
* Extensible Resource Descriptors. This is not yet registered with the IANA, but it is specified
* by OASIS in the <a href="http://docs.oasis-open.org/xri/xrd/v1.0/cd02/xrd-1.0-cd02.html">XRD
* definition</a> and implemented in projects such as <a
* href="http://code.google.com/p/webfinger/">WebFinger</a>.
*
* @since 14.0
*/
public static final MediaType XRD_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "xrd+xml");
public static final MediaType ZIP = createConstant(APPLICATION_TYPE, "zip");
/* font types */
/**
* A collection of font outlines as defined by <a href="https://tools.ietf.org/html/rfc8081">RFC
* 8081</a>.
*
* @since 30.0
*/
public static final MediaType FONT_COLLECTION = createConstant(FONT_TYPE, "collection");
/**
* <a href="https://en.wikipedia.org/wiki/OpenType">Open Type Font Format</a> (OTF) as defined by
* <a href="https://tools.ietf.org/html/rfc8081">RFC 8081</a>.
*
* @since 30.0
*/
public static final MediaType FONT_OTF = createConstant(FONT_TYPE, "otf");
/**
* <a href="https://en.wikipedia.org/wiki/SFNT">Spline or Scalable Font Format</a> (SFNT). <a
* href="https://tools.ietf.org/html/rfc8081">RFC 8081</a> declares this to be the correct media
* type for SFNT, but {@link #SFNT application/font-sfnt} may be necessary in certain situations
* for compatibility.
*
* @since 30.0
*/
public static final MediaType FONT_SFNT = createConstant(FONT_TYPE, "sfnt");
/**
* <a href="https://en.wikipedia.org/wiki/TrueType">True Type Font Format</a> (TTF) as defined by
* <a href="https://tools.ietf.org/html/rfc8081">RFC 8081</a>.
*
* @since 30.0
*/
public static final MediaType FONT_TTF = createConstant(FONT_TYPE, "ttf");
/**
* <a href="http://en.wikipedia.org/wiki/Web_Open_Font_Format">Web Open Font Format</a> (WOFF). <a
* href="https://tools.ietf.org/html/rfc8081">RFC 8081</a> declares this to be the correct media
* type for SFNT, but {@link #WOFF application/font-woff} may be necessary in certain situations
* for compatibility.
*
* @since 30.0
*/
public static final MediaType FONT_WOFF = createConstant(FONT_TYPE, "woff");
/**
* <a href="http://en.wikipedia.org/wiki/Web_Open_Font_Format">Web Open Font Format</a> (WOFF2).
* <a href="https://tools.ietf.org/html/rfc8081">RFC 8081</a> declares this to be the correct
* media type for SFNT, but {@link #WOFF2 application/font-woff2} may be necessary in certain
* situations for compatibility.
*
* @since 30.0
*/
public static final MediaType FONT_WOFF2 = createConstant(FONT_TYPE, "woff2");
private final String type;
private final String subtype;
private final ImmutableListMultimap<String, String> parameters;
@LazyInit private String toString;
@LazyInit private int hashCode;
@LazyInit private Optional<Charset> parsedCharset;
private MediaType(String type, String subtype, ImmutableListMultimap<String, String> parameters) {
this.type = type;
this.subtype = subtype;
this.parameters = parameters;
}
/** Returns the top-level media type. For example, {@code "text"} in {@code "text/plain"}. */
public String type() {
return type;
}
/** Returns the media subtype. For example, {@code "plain"} in {@code "text/plain"}. */
public String subtype() {
return subtype;
}
/** Returns a multimap containing the parameters of this media type. */
public ImmutableListMultimap<String, String> parameters() {
return parameters;
}
private Map<String, ImmutableMultiset<String>> parametersAsMap() {
return Maps.transformValues(
parameters.asMap(),
new Function<Collection<String>, ImmutableMultiset<String>>() {
@Override
public ImmutableMultiset<String> apply(Collection<String> input) {
return ImmutableMultiset.copyOf(input);
}
});
}
/**
* Returns an optional charset for the value of the charset parameter if it is specified.
*
* @throws IllegalStateException if multiple charset values have been set for this media type
* @throws IllegalCharsetNameException if a charset value is present, but illegal
* @throws UnsupportedCharsetException if a charset value is present, but no support is available
* in this instance of the Java virtual machine
*/
public Optional<Charset> charset() {
// racy single-check idiom, this is safe because Optional is immutable.
Optional<Charset> local = parsedCharset;
if (local == null) {
String value = null;
local = Optional.absent();
for (String currentValue : parameters.get(CHARSET_ATTRIBUTE)) {
if (value == null) {
value = currentValue;
local = Optional.of(Charset.forName(value));
} else if (!value.equals(currentValue)) {
throw new IllegalStateException(
"Multiple charset values defined: " + value + ", " + currentValue);
}
}
parsedCharset = local;
}
return local;
}
/**
* Returns a new instance with the same type and subtype as this instance, but without any
* parameters.
*/
public MediaType withoutParameters() {
return parameters.isEmpty() ? this : create(type, subtype);
}
/**
* <em>Replaces</em> all parameters with the given parameters.
*
* @throws IllegalArgumentException if any parameter or value is invalid
*/
public MediaType withParameters(Multimap<String, String> parameters) {
return create(type, subtype, parameters);
}
/**
* <em>Replaces</em> all parameters with the given attribute with parameters using the given
* values. If there are no values, any existing parameters with the given attribute are removed.
*
* @throws IllegalArgumentException if either {@code attribute} or {@code values} is invalid
* @since 24.0
*/
public MediaType withParameters(String attribute, Iterable<String> values) {
checkNotNull(attribute);
checkNotNull(values);
String normalizedAttribute = normalizeToken(attribute);
ImmutableListMultimap.Builder<String, String> builder = ImmutableListMultimap.builder();
for (Entry<String, String> entry : parameters.entries()) {
String key = entry.getKey();
if (!normalizedAttribute.equals(key)) {
builder.put(key, entry.getValue());
}
}
for (String value : values) {
builder.put(normalizedAttribute, normalizeParameterValue(normalizedAttribute, value));
}
MediaType mediaType = new MediaType(type, subtype, builder.build());
// if the attribute isn't charset, we can just inherit the current parsedCharset
if (!normalizedAttribute.equals(CHARSET_ATTRIBUTE)) {
mediaType.parsedCharset = this.parsedCharset;
}
// Return one of the constants if the media type is a known type.
return MoreObjects.firstNonNull(KNOWN_TYPES.get(mediaType), mediaType);
}
/**
* <em>Replaces</em> all parameters with the given attribute with a single parameter with the
* given value. If multiple parameters with the same attributes are necessary use {@link
* #withParameters(String, Iterable)}. Prefer {@link #withCharset} for setting the {@code charset}
* parameter when using a {@link Charset} object.
*
* @throws IllegalArgumentException if either {@code attribute} or {@code value} is invalid
*/
public MediaType withParameter(String attribute, String value) {
return withParameters(attribute, ImmutableSet.of(value));
}
/**
* Returns a new instance with the same type and subtype as this instance, with the {@code
* charset} parameter set to the {@link Charset#name name} of the given charset. Only one {@code
* charset} parameter will be present on the new instance regardless of the number set on this
* one.
*
* <p>If a charset must be specified that is not supported on this JVM (and thus is not
* representable as a {@link Charset} instance, use {@link #withParameter}.
*/
public MediaType withCharset(Charset charset) {
checkNotNull(charset);
MediaType withCharset = withParameter(CHARSET_ATTRIBUTE, charset.name());
// precache the charset so we don't need to parse it
withCharset.parsedCharset = Optional.of(charset);
return withCharset;
}
/** Returns true if either the type or subtype is the wildcard. */
public boolean hasWildcard() {
return WILDCARD.equals(type) || WILDCARD.equals(subtype);
}
/**
* Returns {@code true} if this instance falls within the range (as defined by <a
* href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html">the HTTP Accept header</a>) given
* by the argument according to three criteria:
*
* <ol>
* <li>The type of the argument is the wildcard or equal to the type of this instance.
* <li>The subtype of the argument is the wildcard or equal to the subtype of this instance.
* <li>All of the parameters present in the argument are present in this instance.
* </ol>
*
* <p>For example:
*
* <pre>{@code
* PLAIN_TEXT_UTF_8.is(PLAIN_TEXT_UTF_8) // true
* PLAIN_TEXT_UTF_8.is(HTML_UTF_8) // false
* PLAIN_TEXT_UTF_8.is(ANY_TYPE) // true
* PLAIN_TEXT_UTF_8.is(ANY_TEXT_TYPE) // true
* PLAIN_TEXT_UTF_8.is(ANY_IMAGE_TYPE) // false
* PLAIN_TEXT_UTF_8.is(ANY_TEXT_TYPE.withCharset(UTF_8)) // true
* PLAIN_TEXT_UTF_8.withoutParameters().is(ANY_TEXT_TYPE.withCharset(UTF_8)) // false
* PLAIN_TEXT_UTF_8.is(ANY_TEXT_TYPE.withCharset(UTF_16)) // false
* }</pre>
*
* <p>Note that while it is possible to have the same parameter declared multiple times within a
* media type this method does not consider the number of occurrences of a parameter. For example,
* {@code "text/plain; charset=UTF-8"} satisfies {@code "text/plain; charset=UTF-8;
* charset=UTF-8"}.
*/
public boolean is(MediaType mediaTypeRange) {
return (mediaTypeRange.type.equals(WILDCARD) || mediaTypeRange.type.equals(this.type))
&& (mediaTypeRange.subtype.equals(WILDCARD) || mediaTypeRange.subtype.equals(this.subtype))
&& this.parameters.entries().containsAll(mediaTypeRange.parameters.entries());
}
/**
* Creates a new media type with the given type and subtype.
*
* @throws IllegalArgumentException if type or subtype is invalid or if a wildcard is used for the
* type, but not the subtype.
*/
public static MediaType create(String type, String subtype) {
MediaType mediaType = create(type, subtype, ImmutableListMultimap.<String, String>of());
mediaType.parsedCharset = Optional.absent();
return mediaType;
}
private static MediaType create(
String type, String subtype, Multimap<String, String> parameters) {
checkNotNull(type);
checkNotNull(subtype);
checkNotNull(parameters);
String normalizedType = normalizeToken(type);
String normalizedSubtype = normalizeToken(subtype);
checkArgument(
!WILDCARD.equals(normalizedType) || WILDCARD.equals(normalizedSubtype),
"A wildcard type cannot be used with a non-wildcard subtype");
ImmutableListMultimap.Builder<String, String> builder = ImmutableListMultimap.builder();
for (Entry<String, String> entry : parameters.entries()) {
String attribute = normalizeToken(entry.getKey());
builder.put(attribute, normalizeParameterValue(attribute, entry.getValue()));
}
MediaType mediaType = new MediaType(normalizedType, normalizedSubtype, builder.build());
// Return one of the constants if the media type is a known type.
return MoreObjects.firstNonNull(KNOWN_TYPES.get(mediaType), mediaType);
}
/**
* Creates a media type with the "application" type and the given subtype.
*
* @throws IllegalArgumentException if subtype is invalid
*/
static MediaType createApplicationType(String subtype) {
return create(APPLICATION_TYPE, subtype);
}
/**
* Creates a media type with the "audio" type and the given subtype.
*
* @throws IllegalArgumentException if subtype is invalid
*/
static MediaType createAudioType(String subtype) {
return create(AUDIO_TYPE, subtype);
}
/**
* Creates a media type with the "font" type and the given subtype.
*