intl/uconv/nsConverterInputStream.h

   1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsConverterInputStream_h
   7 #define nsConverterInputStream_h
   8
   9 #include "nsIInputStream.h"
  10 #include "nsIConverterInputStream.h"
  11 #include "nsIUnicharLineInputStream.h"
  12 #include "nsTArray.h"
  13 #include "nsCOMPtr.h"
  14 #include "nsReadLine.h"
  15 #include "mozilla/Encoding.h"
  16 #include "mozilla/UniquePtr.h"
  17
  18 #define NS_CONVERTERINPUTSTREAM_CONTRACTID \
  19   "@mozilla.org/intl/converter-input-stream;1"
  20
  21 // {2BC2AD62-AD5D-4b7b-A9DB-F74AE203C527}
  22 #define NS_CONVERTERINPUTSTREAM_CID                 \
  23   {                                                 \
  24     0x2bc2ad62, 0xad5d, 0x4b7b, {                   \
  25       0xa9, 0xdb, 0xf7, 0x4a, 0xe2, 0x3, 0xc5, 0x27 \
  26     }                                               \
  27   }
  28
  29 class nsConverterInputStream : public nsIConverterInputStream,
  30                                public nsIUnicharLineInputStream {
  31  public:
  32   NS_DECL_ISUPPORTS
  33   NS_DECL_NSIUNICHARINPUTSTREAM
  34   NS_DECL_NSIUNICHARLINEINPUTSTREAM
  35   NS_DECL_NSICONVERTERINPUTSTREAM
  36
  37   nsConverterInputStream()
  38       : mLastErrorCode(NS_OK),
  39         mLeftOverBytes(0),
  40         mUnicharDataOffset(0),
  41         mUnicharDataLength(0),
  42         mErrorsAreFatal(false),
  43         mLineBuffer(nullptr) {}
  44
  45  private:
  46   virtual ~nsConverterInputStream() { Close(); }
  47
  48   uint32_t Fill(nsresult* aErrorCode);
  49
  50   mozilla::UniquePtr<mozilla::Decoder> mConverter;
  51   FallibleTArray<char> mByteData;
  52   FallibleTArray<char16_t> mUnicharData;
  53   nsCOMPtr<nsIInputStream> mInput;
  54
  55   nsresult mLastErrorCode;
  56   uint32_t mLeftOverBytes;
  57   uint32_t mUnicharDataOffset;
  58   uint32_t mUnicharDataLength;
  59   bool mErrorsAreFatal;
  60
  61   mozilla::UniquePtr<nsLineBuffer<char16_t> > mLineBuffer;
  62 };
  63
  64 #endif