/* * Copyright (C) 2012 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 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 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. */ #import "config.h" #import "UTIUtilities.h" #import <wtf/MainThread.h> #import <wtf/TinyLRUCache.h> #import <wtf/text/WTFString.h> #if PLATFORM(IOS) #import <MobileCoreServices/MobileCoreServices.h> #endif namespace WebCore { String MIMETypeFromUTI(const String& uti) { return adoptCF(UTTypeCopyPreferredTagWithClass(uti.createCFString().get(), kUTTagClassMIMEType)).get(); } String MIMETypeFromUTITree(const String& uti) { auto utiCF = uti.createCFString(); // Check if this UTI has a MIME type. RetainPtr<CFStringRef> mimeType = adoptCF(UTTypeCopyPreferredTagWithClass(utiCF.get(), kUTTagClassMIMEType)); if (mimeType) return mimeType.get(); // If not, walk the ancestory of this UTI via its "ConformsTo" tags and return the first MIME type we find. RetainPtr<CFDictionaryRef> decl = adoptCF(UTTypeCopyDeclaration(utiCF.get())); if (!decl) return String(); CFTypeRef value = CFDictionaryGetValue(decl.get(), kUTTypeConformsToKey); if (!value) return String(); CFTypeID typeID = CFGetTypeID(value); if (typeID == CFStringGetTypeID()) return MIMETypeFromUTITree((CFStringRef)value); if (typeID == CFArrayGetTypeID()) { CFArrayRef newTypes = (CFArrayRef)value; CFIndex count = CFArrayGetCount(newTypes); for (CFIndex i = 0; i < count; ++i) { CFTypeRef object = CFArrayGetValueAtIndex(newTypes, i); if (CFGetTypeID(object) != CFStringGetTypeID()) continue; String mimeType = MIMETypeFromUTITree((CFStringRef)object); if (!mimeType.isEmpty()) return mimeType; } } return String(); } struct UTIFromMIMETypeCachePolicy : TinyLRUCachePolicy<String, String> { public: static String createValueForKey(const String& key) { return String(adoptCF(UTTypeCreatePreferredIdentifierForTag(kUTTagClassMIMEType, key.createCFString().get(), 0)).get()); } }; String UTIFromMIMEType(const String& mimeType) { ASSERT(isMainThread()); static NeverDestroyed<TinyLRUCache<String, String, 16, UTIFromMIMETypeCachePolicy>> cache; return cache.get().get(mimeType); } bool isDeclaredUTI(const String& UTI) { return UTTypeIsDeclared(UTI.createCFString().get()); } }