dom/file/FileReaderSync.h
author Mike Hommey <mh+mozilla@glandium.org>
Fri, 11 Jan 2019 16:01:15 +0000
changeset 453570 daf50f25895db073e44d50fecf2e4f6fe873865d
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1519307 - Add a new project to build useful parts of breakpad independently. r=froydnj With `ac_add_options --enable-project=tools/crashreporter` in a mozconfig, `./mach build` builds minidump_stackwalk, dump_syms and fileid. One caveat is that due to limitation in how the build system works currently, it's cumbersome to keep dump_syms as a host program for Gecko, and to make it a target program for this project. For now, keep it as a host program. We're not going to use it on automation, but it's still convenient to have for quick local builds (I've had to resort to awful hacks downstream). Differential Revision: https://phabricator.services.mozilla.com/D16299

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_filereadersync_h__
#define mozilla_dom_filereadersync_h__

#include "mozilla/dom/WorkerCommon.h"

class nsIInputStream;

namespace mozilla {
class ErrorResult;

namespace dom {
class Blob;
class GlobalObject;
template <typename>
class Optional;

class FileReaderSync final {
  NS_INLINE_DECL_REFCOUNTING(FileReaderSync)

 private:
  // Private destructor, to discourage deletion outside of Release():
  ~FileReaderSync() {}

  nsresult ConvertStream(nsIInputStream* aStream, const char* aCharset,
                         nsAString& aResult);

  nsresult ConvertAsyncToSyncStream(
      uint64_t aStreamSize, already_AddRefed<nsIInputStream> aAsyncStream,
      nsIInputStream** aSyncStream);

  nsresult SyncRead(nsIInputStream* aStream, char* aBuffer,
                    uint32_t aBufferSize, uint32_t* aRead);

 public:
  static already_AddRefed<FileReaderSync> Constructor(
      const GlobalObject& aGlobal, ErrorResult& aRv);

  bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto,
                  JS::MutableHandle<JSObject*> aReflector);

  void ReadAsArrayBuffer(JSContext* aCx, JS::Handle<JSObject*> aScopeObj,
                         Blob& aBlob, JS::MutableHandle<JSObject*> aRetval,
                         ErrorResult& aRv);
  void ReadAsBinaryString(Blob& aBlob, nsAString& aResult, ErrorResult& aRv);
  void ReadAsText(Blob& aBlob, const Optional<nsAString>& aEncoding,
                  nsAString& aResult, ErrorResult& aRv);
  void ReadAsDataURL(Blob& aBlob, nsAString& aResult, ErrorResult& aRv);
};

}  // namespace dom
}  // namespace mozilla

#endif  // mozilla_dom_filereadersync_h__