The Tor Browser: intl/uconv/ucvko/nsISO2022KRToUnicode.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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 #ifndef nsISO2022KRToUnicode_h__

     6 #define nsISO2022KRToUnicode_h__

     7 #include "nsUCSupport.h"

     8 #include "mozilla/Telemetry.h"

    10 class nsISO2022KRToUnicode : public nsBasicDecoderSupport

    11 {

    12 public:

    13   nsISO2022KRToUnicode()

    14   {

    15     mState = mState_Init;

    16     mLastLegalState = mState_ASCII;

    17     mData = 0;

    18     mEUCKRDecoder = nullptr;

    19     mRunLength = 0;

    20     mozilla::Telemetry::Accumulate(

    21       mozilla::Telemetry::DECODER_INSTANTIATED_ISO2022KR, true);

    22   }

    24   virtual ~nsISO2022KRToUnicode()

    25   {

    26     NS_IF_RELEASE(mEUCKRDecoder);

    27   }

    29   NS_IMETHOD Convert(const char * aSrc, int32_t * aSrcLength,

    30      char16_t * aDest, int32_t * aDestLength) ;

    32   NS_IMETHOD GetMaxLength(const char * aSrc, int32_t aSrcLength,

    33      int32_t * aDestLength)

    34   {

    35     *aDestLength = aSrcLength;

    36     return NS_OK;

    37   }

    39   NS_IMETHOD Reset()

    40   {

    41     mState = mState_Init;

    42     mLastLegalState = mState_ASCII;

    43     mRunLength = 0;

    44     return NS_OK;

    45   }

    47 private:

    48   enum {

    49     mState_Init,

    50     mState_ASCII,

    51     mState_ESC,

    52     mState_ESC_24,

    53     mState_ESC_24_29,

    54     mState_KSX1001_1992,

    55     mState_KSX1001_1992_2ndbyte,

    56     mState_ERROR

    57   } mState, mLastLegalState;

    59   uint8_t mData;

    61   // Length of non-ASCII run

    62   uint32_t mRunLength;

    64   nsIUnicodeDecoder *mEUCKRDecoder;

    65 };

    66 #endif // nsISO2022KRToUnicode_h__

The Tor Browser / file revision

intl/uconv/ucvko/nsISO2022KRToUnicode.h@97036ab72558

intl/uconv/ucvko/nsISO2022KRToUnicode.h