/**
* Use this constructor if you want i/o to be stream based.
*
* @update gess 5/12/98
* @param aStream --
* @param assumeOwnership --
* @param aFilename --
* @return
*/
nsScanner::nsScanner(const nsAString& aFilename, nsIInputStream* aStream,
const nsACString& aCharset, PRInt32 aSource)
: mFilename(aFilename), mParser(nsnull)
{
MOZ_COUNT_CTOR(nsScanner);
mSlidingBuffer = nsnull;
// XXX This is a big hack. We need to initialize the iterators to something.
// What matters is that mCurrentPosition == mEndPosition, so that our methods
// believe that we are at EOF (see bug 182067). We null out mCurrentPosition
// so that we have some hope of catching null pointer dereferences associated
// with this hack. --darin
memset(&mCurrentPosition, 0, sizeof(mCurrentPosition));
mMarkPosition = mCurrentPosition;
mEndPosition = mCurrentPosition;
mIncremental = PR_FALSE;
mFirstNonWhitespacePosition = -1;
mCountRemaining = 0;
mTotalRead=0;
mInputStream=aStream;
mUnicodeDecoder = 0;
mCharsetSource = kCharsetUninitialized;
SetDocumentCharset(aCharset, aSource);
}
/**
* Use this constructor if you want i/o to be based on strings
* the scanner receives. If you pass a null filename, you
* can still provide data to the scanner via append.
*
* @update gess 5/12/98
* @param aFilename --
* @return
*/
nsScanner::nsScanner(nsString& aFilename,bool aCreateStream,
const nsACString& aCharset, PRInt32 aSource)
: mFilename(aFilename)
{
MOZ_COUNT_CTOR(nsScanner);
NS_ASSERTION(!aCreateStream, "This is always true.");
mSlidingBuffer = nsnull;
// XXX This is a big hack. We need to initialize the iterators to something.
// What matters is that mCurrentPosition == mEndPosition, so that our methods
// believe that we are at EOF (see bug 182067). We null out mCurrentPosition
// so that we have some hope of catching null pointer dereferences associated
// with this hack. --darin
memset(&mCurrentPosition, 0, sizeof(mCurrentPosition));
mMarkPosition = mCurrentPosition;
mEndPosition = mCurrentPosition;
mIncremental = true;
mFirstNonWhitespacePosition = -1;
mCountRemaining = 0;
mUnicodeDecoder = 0;
mCharsetSource = kCharsetUninitialized;
mHasInvalidCharacter = false;
mReplacementCharacter = PRUnichar(0x0);
SetDocumentCharset(aCharset, aSource);
}
nsHtml5Parser::SetDocumentCharset(const nsACString& aCharset,
PRInt32 aCharsetSource)
{
NS_PRECONDITION(!mExecutor->HasStarted(),
"Document charset set too late.");
NS_PRECONDITION(mStreamParser, "Setting charset on a script-only parser.");
mStreamParser->SetDocumentCharset(aCharset, aCharsetSource);
mExecutor->SetDocumentCharsetAndSource((nsACString&)aCharset,
aCharsetSource);
}
nsHtml5Parser::SetDocumentCharset(const nsACString& aCharset,
PRInt32 aCharsetSource)
{
NS_PRECONDITION(!mExecutor->HasStarted(),
"Document charset set too late.");
NS_PRECONDITION(mStreamParser, "Setting charset on a script-only parser.");
nsCAutoString trimmed;
trimmed.Assign(aCharset);
trimmed.Trim(" \t\r\n\f");
mStreamParser->SetDocumentCharset(trimmed, aCharsetSource);
mExecutor->SetDocumentCharsetAndSource(trimmed,
aCharsetSource);
}
/**
* Use this constructor if you want i/o to be based on
* a single string you hand in during construction.
* This short cut was added for Javascript.
*
* @update gess 5/12/98
* @param aMode represents the parser mode (nav, other)
* @return
*/
nsScanner::nsScanner(const nsAString& anHTMLString, const nsACString& aCharset,
PRInt32 aSource)
: mParser(nsnull)
{
MOZ_COUNT_CTOR(nsScanner);
mTotalRead = anHTMLString.Length();
mSlidingBuffer = nsnull;
mCountRemaining = 0;
mFirstNonWhitespacePosition = -1;
AppendToBuffer(anHTMLString);
mSlidingBuffer->BeginReading(mCurrentPosition);
mMarkPosition = mCurrentPosition;
mIncremental = PR_FALSE;
mUnicodeDecoder = 0;
mCharsetSource = kCharsetUninitialized;
SetDocumentCharset(aCharset, aSource);
}
/**
* Use this constructor if you want i/o to be based on
* a single string you hand in during construction.
* This short cut was added for Javascript.
*
* @update gess 5/12/98
* @param aMode represents the parser mode (nav, other)
* @return
*/
nsScanner::nsScanner(const nsAString& anHTMLString, const nsACString& aCharset,
PRInt32 aSource)
: mParser(nsnull)
{
MOZ_COUNT_CTOR(nsScanner);
mSlidingBuffer = nsnull;
mCountRemaining = 0;
mFirstNonWhitespacePosition = -1;
if (AppendToBuffer(anHTMLString)) {
mTotalRead = anHTMLString.Length();
mSlidingBuffer->BeginReading(mCurrentPosition);
} else {
mTotalRead = 0;
/* XXX see hack below, re: bug 182067 */
memset(&mCurrentPosition, 0, sizeof(mCurrentPosition));
mEndPosition = mCurrentPosition;
}
mMarkPosition = mCurrentPosition;
mIncremental = PR_FALSE;
mUnicodeDecoder = 0;
mCharsetSource = kCharsetUninitialized;
SetDocumentCharset(aCharset, aSource);
}
