dom/base/BodyUtil.h

   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_BodyUtil_h
   8 #define mozilla_dom_BodyUtil_h
   9
  10 #include "nsString.h"
  11 #include "nsError.h"
  12
  13 #include "mozilla/ErrorResult.h"
  14 #include "mozilla/dom/File.h"
  15 #include "mozilla/dom/FormData.h"
  16
  17 namespace mozilla {
  18 namespace dom {
  19
  20 class BodyUtil final {
  21  private:
  22   BodyUtil() = delete;
  23
  24  public:
  25   /**
  26    * Creates an array buffer from an array, assigning the result to |aValue|.
  27    * The array buffer takes ownership of |aInput|, which must be allocated
  28    * by |malloc|.
  29    */
  30   static void ConsumeArrayBuffer(JSContext* aCx,
  31                                  JS::MutableHandle<JSObject*> aValue,
  32                                  uint32_t aInputLength, uint8_t* aInput,
  33                                  ErrorResult& aRv);
  34
  35   /**
  36    * Creates an in-memory blob from an array. The blob takes ownership of
  37    * |aInput|, which must be allocated by |malloc|.
  38    */
  39   static already_AddRefed<Blob> ConsumeBlob(nsIGlobalObject* aParent,
  40                                             const nsString& aMimeType,
  41                                             uint32_t aInputLength,
  42                                             uint8_t* aInput, ErrorResult& aRv);
  43
  44   /**
  45    * Creates a form data object from a UTF-8 encoded |aStr|. Returns |nullptr|
  46    * and sets |aRv| to MSG_BAD_FORMDATA if |aStr| contains invalid data.
  47    */
  48   static already_AddRefed<FormData> ConsumeFormData(nsIGlobalObject* aParent,
  49                                                     const nsCString& aMimeType,
  50                                                     const nsCString& aStr,
  51                                                     ErrorResult& aRv);
  52
  53   /**
  54    * UTF-8 decodes |aInput| into |aText|. The caller may free |aInput|
  55    * once this method returns.
  56    */
  57   static nsresult ConsumeText(uint32_t aInputLength, uint8_t* aInput,
  58                               nsString& aText);
  59
  60   /**
  61    * Parses a UTF-8 encoded |aStr| as JSON, assigning the result to |aValue|.
  62    * Sets |aRv| to a syntax error if |aStr| contains invalid data.
  63    */
  64   static void ConsumeJson(JSContext* aCx, JS::MutableHandle<JS::Value> aValue,
  65                           const nsString& aStr, ErrorResult& aRv);
  66 };
  67
  68 }  // namespace dom
  69 }  // namespace mozilla
  70
  71 #endif  // mozilla_dom_BodyUtil_h