The Tor Browser: extensions/universalchardet/src/base/nsEscCharsetProber.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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/. */

     7 #include "nsEscCharsetProber.h"

     8 #include "nsUniversalDetector.h"

    10 nsEscCharSetProber::nsEscCharSetProber(uint32_t aLanguageFilter)

    11 {

    12   for (uint32_t i = 0; i < NUM_OF_ESC_CHARSETS; i++)

    13     mCodingSM[i] = nullptr;

    14   if (aLanguageFilter & NS_FILTER_CHINESE_SIMPLIFIED)

    15   {

    16     mCodingSM[0] = new nsCodingStateMachine(&HZSMModel);

    17     mCodingSM[1] = new nsCodingStateMachine(&ISO2022CNSMModel);

    18   }

    19   if (aLanguageFilter & NS_FILTER_JAPANESE)

    20     mCodingSM[2] = new nsCodingStateMachine(&ISO2022JPSMModel);

    21   if (aLanguageFilter & NS_FILTER_KOREAN)

    22     mCodingSM[3] = new nsCodingStateMachine(&ISO2022KRSMModel);

    23   mActiveSM = NUM_OF_ESC_CHARSETS;

    24   mState = eDetecting;

    25   mDetectedCharset = nullptr;

    26 }

    28 nsEscCharSetProber::~nsEscCharSetProber(void)

    29 {

    30   for (uint32_t i = 0; i < NUM_OF_ESC_CHARSETS; i++)

    31     delete mCodingSM[i];

    32 }

    34 void nsEscCharSetProber::Reset(void)

    35 {

    36   mState = eDetecting;

    37   for (uint32_t i = 0; i < NUM_OF_ESC_CHARSETS; i++)

    38     if (mCodingSM[i])

    39       mCodingSM[i]->Reset();

    40   mActiveSM = NUM_OF_ESC_CHARSETS;

    41   mDetectedCharset = nullptr;

    42 }

    44 nsProbingState nsEscCharSetProber::HandleData(const char* aBuf, uint32_t aLen)

    45 {

    46   nsSMState codingState;

    47   int32_t j;

    48   uint32_t i;

    50   for ( i = 0; i < aLen && mState == eDetecting; i++)

    51   {

    52     for (j = mActiveSM-1; j>= 0; j--)

    53     {

    54       if (mCodingSM[j])

    55       {

    56         codingState = mCodingSM[j]->NextState(aBuf[i]);

    57         if (codingState == eItsMe)

    58         {

    59           mState = eFoundIt;

    60           mDetectedCharset = mCodingSM[j]->GetCodingStateMachine();

    61           return mState;

    62         }

    63       }

    64     }

    65   }

    67   return mState;

    68 }

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