1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 #ifndef mozilla_dom_filereadersync_h__ 8 #define mozilla_dom_filereadersync_h__ 9 10 #include "mozilla/dom/WorkerCommon.h" 11 #include "nsISupports.h" 12 13 class nsIInputStream; 14 15 namespace mozilla { 16 class ErrorResult; 17 18 namespace dom { 19 class Blob; 20 class GlobalObject; 21 template <typename> 22 class Optional; 23 24 class FileReaderSync final { 25 NS_INLINE_DECL_REFCOUNTING(FileReaderSync) 26 27 private: 28 // Private destructor, to discourage deletion outside of Release(): 29 ~FileReaderSync() = default; 30 31 nsresult ConvertStream(nsIInputStream* aStream, const char* aCharset, 32 nsAString& aResult); 33 34 nsresult ConvertAsyncToSyncStream( 35 uint64_t aStreamSize, already_AddRefed<nsIInputStream> aAsyncStream, 36 nsIInputStream** aSyncStream); 37 38 nsresult SyncRead(nsIInputStream* aStream, char* aBuffer, 39 uint32_t aBufferSize, uint32_t* aTotalBytesRead); 40 41 public: 42 static already_AddRefed<FileReaderSync> Constructor( 43 const GlobalObject& aGlobal); 44 45 bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto, 46 JS::MutableHandle<JSObject*> aReflector); 47 48 void ReadAsArrayBuffer(JSContext* aCx, JS::Handle<JSObject*> aScopeObj, 49 Blob& aBlob, JS::MutableHandle<JSObject*> aRetval, 50 ErrorResult& aRv); 51 void ReadAsBinaryString(Blob& aBlob, nsAString& aResult, ErrorResult& aRv); 52 void ReadAsText(Blob& aBlob, const Optional<nsAString>& aEncoding, 53 nsAString& aResult, ErrorResult& aRv); 54 void ReadAsDataURL(Blob& aBlob, nsAString& aResult, ErrorResult& aRv); 55 }; 56 57 } // namespace dom 58 } // namespace mozilla 59 60 #endif // mozilla_dom_filereadersync_h__ 61