| /* |
| * Copyright (C) 2013 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| WI.fileExtensionForFilename = function(filename) |
| { |
| if (!filename) |
| return null; |
| |
| let index = filename.lastIndexOf("."); |
| if (index === -1) |
| return null; |
| |
| if (index === filename.length - 1) |
| return null; |
| |
| return filename.substr(index + 1); |
| }; |
| |
| WI.fileExtensionForURL = function(url) |
| { |
| let lastPathComponent = parseURL(url).lastPathComponent; |
| return WI.fileExtensionForFilename(lastPathComponent); |
| }; |
| |
| WI.mimeTypeForFileExtension = function(extension) |
| { |
| const extensionToMIMEType = { |
| // Document types. |
| "html": "text/html", |
| "xhtml": "application/xhtml+xml", |
| "xml": "text/xml", |
| |
| // Script types. |
| "js": "text/javascript", |
| "mjs": "text/javascript", |
| "json": "application/json", |
| "clj": "text/x-clojure", |
| "coffee": "text/x-coffeescript", |
| "ls": "text/x-livescript", |
| "ts": "text/typescript", |
| "ps": "application/postscript", |
| "jsx": "text/jsx", |
| |
| // Stylesheet types. |
| "css": "text/css", |
| "less": "text/x-less", |
| "sass": "text/x-sass", |
| "scss": "text/x-scss", |
| |
| // Image types. |
| "bmp": "image/bmp", |
| "gif": "image/gif", |
| "jpeg": "image/jpeg", |
| "jpg": "image/jpeg", |
| "pdf": "application/pdf", |
| "png": "image/png", |
| "tif": "image/tiff", |
| "tiff": "image/tiff", |
| "xbm": "image/x-xbitmap", |
| "webp": "image/webp", |
| "ico": "image/x-icon", |
| |
| "ogx": "application/ogg", |
| "ogg": "audio/ogg", |
| "oga": "audio/ogg", |
| "ogv": "video/ogg", |
| |
| // Annodex |
| "anx": "application/annodex", |
| "axa": "audio/annodex", |
| "axv": "video/annodex", |
| "spx": "audio/speex", |
| |
| // WebM |
| "webm": "video/webm", |
| |
| // MPEG |
| "m1a": "audio/mpeg", |
| "m2a": "audio/mpeg", |
| "mpg": "video/mpeg", |
| "m15": "video/mpeg", |
| "m1s": "video/mpeg", |
| "m1v": "video/mpeg", |
| "m75": "video/mpeg", |
| "mpa": "video/mpeg", |
| "mpeg": "video/mpeg", |
| "mpm": "video/mpeg", |
| "mpv": "video/mpeg", |
| |
| // MPEG playlist |
| "m3u8": "application/x-mpegurl", |
| "m3url": "audio/x-mpegurl", |
| "m3u": "audio/x-mpegurl", |
| |
| // MPEG-4 |
| "m4v": "video/x-m4v", |
| "m4a": "audio/x-m4a", |
| "m4b": "audio/x-m4b", |
| "m4p": "audio/x-m4p", |
| |
| // MP3 |
| "mp3": "audio/mp3", |
| |
| // MPEG-2 |
| "mp2": "video/x-mpeg2", |
| "vob": "video/mpeg2", |
| "mod": "video/mpeg2", |
| "m2ts": "video/m2ts", |
| "m2t": "video/x-m2ts", |
| |
| // 3GP/3GP2 |
| "3gpp": "audio/3gpp", |
| "3g2": "audio/3gpp2", |
| "amc": "application/x-mpeg", |
| |
| // AAC |
| "aac": "audio/aac", |
| "adts": "audio/aac", |
| "m4r": "audio/x-aac", |
| |
| // CoreAudio File |
| "caf": "audio/x-caf", |
| "gsm": "audio/x-gsm", |
| |
| // ADPCM |
| "wav": "audio/x-wav", |
| |
| // Text Track |
| "vtt": "text/vtt", |
| |
| // Font |
| "woff": "font/woff", |
| "woff2": "font/woff2", |
| "otf": "font/otf", |
| "ttf": "font/ttf", |
| "sfnt": "font/sfnt", |
| |
| // Miscellaneous types. |
| "svg": "image/svg+xml", |
| "txt": "text/plain", |
| "xsl": "text/xsl" |
| }; |
| |
| return extensionToMIMEType[extension] || null; |
| }; |
| |
| WI.fileExtensionForMIMEType = function(mimeType) |
| { |
| if (!mimeType) |
| return null; |
| |
| const mimeTypeToExtension = { |
| // Document types. |
| "text/html": "html", |
| "application/xhtml+xml": "xhtml", |
| "application/xml": "xml", |
| "text/xml": "xml", |
| |
| // Script types. |
| "application/ecmascript": "js", |
| "application/javascript": "js", |
| "application/x-ecmascript": "js", |
| "application/x-javascript": "js", |
| "text/ecmascript": "js", |
| "text/javascript": "js", |
| "text/javascript1.0": "js", |
| "text/javascript1.1": "js", |
| "text/javascript1.2": "js", |
| "text/javascript1.3": "js", |
| "text/javascript1.4": "js", |
| "text/javascript1.5": "js", |
| "text/jscript": "js", |
| "text/x-ecmascript": "js", |
| "text/x-javascript": "js", |
| "application/json": "json", |
| "text/x-clojure": "clj", |
| "text/x-coffeescript": "coffee", |
| "text/livescript": "ls", |
| "text/x-livescript": "ls", |
| "text/typescript": "ts", |
| "application/postscript": "ps", |
| "text/jsx": "jsx", |
| |
| // Stylesheet types. |
| "text/css": "css", |
| "text/x-less": "less", |
| "text/x-sass": "sass", |
| "text/x-scss": "scss", |
| |
| // Image types. |
| "image/bmp": "bmp", |
| "image/gif": "gif", |
| "image/jp2": "jp2", |
| "image/jpeg": "jpg", |
| "application/pdf": "pdf", |
| "text/pdf": "pdf", |
| "image/png": "png", |
| "image/tiff": "tiff", |
| "image/x-xbitmap": "xbm", |
| "image/webp": "webp", |
| "image/vnd.microsoft.icon": "ico", |
| "image/x-icon": "ico", |
| |
| // Ogg |
| "application/ogg": "ogx", |
| "audio/ogg": "ogg", |
| |
| // Annodex |
| "application/annodex": "anx", |
| "audio/annodex": "axa", |
| "video/annodex": "axv", |
| "audio/speex": "spx", |
| |
| // WebM |
| "video/webm": "webm", |
| "audio/webm": "webm", |
| |
| // MPEG |
| "video/mpeg": "mpeg", |
| |
| // MPEG playlist |
| "application/vnd.apple.mpegurl": "m3u8", |
| "application/mpegurl": "m3u8", |
| "application/x-mpegurl": "m3u8", |
| "audio/mpegurl": "m3u", |
| "audio/x-mpegurl": "m3u", |
| |
| // MPEG-4 |
| "video/x-m4v": "m4v", |
| "audio/x-m4a": "m4a", |
| "audio/x-m4b": "m4b", |
| "audio/x-m4p": "m4p", |
| "audio/mp4": "m4a", |
| |
| // MP3 |
| "audio/mp3": "mp3", |
| "audio/x-mp3": "mp3", |
| "audio/x-mpeg": "mp3", |
| |
| // MPEG-2 |
| "video/x-mpeg2": "mp2", |
| "video/mpeg2": "vob", |
| "video/m2ts": "m2ts", |
| "video/x-m2ts": "m2t", |
| |
| // 3GP/3GP2 |
| "audio/3gpp": "3gpp", |
| "audio/3gpp2": "3g2", |
| "application/x-mpeg": "amc", |
| |
| // AAC |
| "audio/aac": "aac", |
| "audio/x-aac": "m4r", |
| |
| // CoreAudio File |
| "audio/x-caf": "caf", |
| "audio/x-gsm": "gsm", |
| |
| // ADPCM |
| "audio/x-wav": "wav", |
| "audio/vnd.wave": "wav", |
| |
| // Text Track |
| "text/vtt": "vtt", |
| |
| // Font |
| "font/woff": "woff", |
| "font/woff2": "woff2", |
| "font/otf": "otf", |
| "font/ttf": "ttf", |
| "font/sfnt": "sfnt", |
| |
| // Miscellaneous types. |
| "image/svg+xml": "svg", |
| "text/plain": "txt", |
| "text/xsl": "xsl", |
| }; |
| |
| let extension = mimeTypeToExtension[mimeType]; |
| if (extension) |
| return extension; |
| |
| if (mimeType.endsWith("+json")) |
| return "json"; |
| if (mimeType.endsWith("+xml")) |
| return "xml"; |
| |
| return null; |
| }; |
| |
| WI.shouldTreatMIMETypeAsText = function(mimeType) |
| { |
| if (!mimeType) |
| return false; |
| |
| if (mimeType.startsWith("text/")) |
| return true; |
| |
| if (mimeType.endsWith("+json") || mimeType.endsWith("+xml")) |
| return true; |
| |
| let extension = WI.fileExtensionForMIMEType(mimeType); |
| if (extension === "xml") |
| return true; |
| |
| // Various script and JSON mime types. |
| if (extension === "js" || extension === "json") |
| return true; |
| |
| // Various media text mime types. |
| if (extension === "m3u8" || extension === "m3u") |
| return true; |
| |
| if (mimeType.startsWith("application/")) |
| return mimeType.endsWith("script") || mimeType.endsWith("json") || mimeType.endsWith("xml"); |
| |
| return false; |
| }; |
