michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_dom_file_domarchivereader_h__
michael@0: #define mozilla_dom_file_domarchivereader_h__
michael@0: 
michael@0: #include "nsWrapperCache.h"
michael@0: 
michael@0: #include "FileCommon.h"
michael@0: 
michael@0: #include "nsCOMArray.h"
michael@0: #include "nsIChannel.h"
michael@0: #include "nsIDOMFile.h"
michael@0: #include "mozilla/Attributes.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: class ArchiveReaderOptions;
michael@0: class GlobalObject;
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: 
michael@0: BEGIN_FILE_NAMESPACE
michael@0: 
michael@0: class ArchiveRequest;
michael@0: 
michael@0: /**
michael@0:  * This is the ArchiveReader object
michael@0:  */
michael@0: class ArchiveReader MOZ_FINAL : public nsISupports,
michael@0:                                 public nsWrapperCache
michael@0: {
michael@0: public:
michael@0:   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
michael@0:   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(ArchiveReader)
michael@0: 
michael@0:   static already_AddRefed<ArchiveReader>
michael@0:   Constructor(const GlobalObject& aGlobal, nsIDOMBlob* aBlob,
michael@0:               const ArchiveReaderOptions& aOptions, ErrorResult& aError);
michael@0: 
michael@0:   ArchiveReader(nsIDOMBlob* aBlob, nsPIDOMWindow* aWindow,
michael@0:                 const nsACString& aEncoding);
michael@0: 
michael@0:   nsIDOMWindow* GetParentObject() const
michael@0:   {
michael@0:     return mWindow;
michael@0:   }
michael@0:   virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
michael@0: 
michael@0:   already_AddRefed<ArchiveRequest> GetFilenames();
michael@0:   already_AddRefed<ArchiveRequest> GetFile(const nsAString& filename);
michael@0:   already_AddRefed<ArchiveRequest> GetFiles();
michael@0: 
michael@0:   nsresult GetInputStream(nsIInputStream** aInputStream);
michael@0:   nsresult GetSize(uint64_t* aSize);
michael@0: 
michael@0: public: // for the ArchiveRequest:
michael@0:   nsresult RegisterRequest(ArchiveRequest* aRequest);
michael@0: 
michael@0: public: // For events:
michael@0:   void Ready(nsTArray<nsCOMPtr<nsIDOMFile> >& aFileList,
michael@0:              nsresult aStatus);
michael@0: 
michael@0: private:
michael@0:   ~ArchiveReader();
michael@0: 
michael@0:   already_AddRefed<ArchiveRequest> GenerateArchiveRequest();
michael@0: 
michael@0:   nsresult OpenArchive();
michael@0: 
michael@0:   void RequestReady(ArchiveRequest* aRequest);
michael@0: 
michael@0: protected:
michael@0:   // The archive blob/file
michael@0:   nsCOMPtr<nsIDOMBlob> mBlob;
michael@0: 
michael@0:   // The window is needed by the requests
michael@0:   nsCOMPtr<nsPIDOMWindow> mWindow;
michael@0: 
michael@0:   // Are we ready to return data?
michael@0:   enum {
michael@0:     NOT_STARTED = 0,
michael@0:     WORKING,
michael@0:     READY
michael@0:   } mStatus;
michael@0: 
michael@0:   // State of the read:
michael@0:   enum {
michael@0:     Header, // We are collecting the header: 30bytes
michael@0:     Name,   // The name length is contained in the header
michael@0:     Data,   // The length of the data segment COULD be written in the header
michael@0:     Search  // ... if the data length is unknown (== 0) we wait until we read a new header 
michael@0:   } mReadStatus;
michael@0: 
michael@0:   // List of requests to be processed
michael@0:   nsTArray<nsRefPtr<ArchiveRequest> > mRequests;
michael@0: 
michael@0:   // Everything related to the blobs and the status:
michael@0:   struct {
michael@0:     nsTArray<nsCOMPtr<nsIDOMFile> > fileList;
michael@0:     nsresult status;
michael@0:   } mData;
michael@0: 
michael@0:   nsCString mEncoding;
michael@0: };
michael@0: 
michael@0: END_FILE_NAMESPACE
michael@0: 
michael@0: #endif // mozilla_dom_file_domarchivereader_h__