bool TestXMLProperties::CompareFiles(const std::wstring &first, const std::wstring &second)
{
	std::ifstream firstStream(first.c_str());
	firstStream.seekg(0, std::ios::end);
	std::ifstream::pos_type firstSize = firstStream.tellg();

	std::ifstream secondStream(second.c_str());
	secondStream.seekg(0, std::ios::end);
	std::ifstream::pos_type secondSize = secondStream.tellg();
	if(firstSize != secondSize)
		return false;

	std::string firstBuffer((unsigned long)firstSize, 0);
	std::string secondBuffer((unsigned long)secondSize, 0);

	firstStream.seekg(0);
	secondStream.seekg(0);
	firstStream.read(&firstBuffer[0], firstSize);
	secondStream.read(&secondBuffer[0], secondSize);
	if(firstBuffer == secondBuffer)
		return true;

	return false;
}
// nsIStreamListener implementation
NS_IMETHODIMP
nsMultiMixedConv::OnDataAvailable(nsIRequest *request, nsISupports *context,
                                  nsIInputStream *inStr, uint64_t sourceOffset,
                                  uint32_t count) {
    nsresult rv = NS_OK;
    AutoFree buffer(nullptr);
    uint32_t bufLen = 0, read = 0;

    NS_ASSERTION(request, "multimixed converter needs a request");

    nsCOMPtr<nsIChannel> channel = do_QueryInterface(request, &rv);
    if (NS_FAILED(rv)) return rv;

    // fill buffer
    {
        bufLen = count + mBufLen;
        NS_ENSURE_TRUE((bufLen >= count) && (bufLen >= mBufLen),
                       NS_ERROR_FAILURE);
        buffer = (char *) malloc(bufLen);
        if (!buffer)
            return NS_ERROR_OUT_OF_MEMORY;

        if (mBufLen) {
            // incorporate any buffered data into the parsing
            memcpy(buffer, mBuffer, mBufLen);
            free(mBuffer);
            mBuffer = 0;
            mBufLen = 0;
        }
        
        rv = inStr->Read(buffer + (bufLen - count), count, &read);

        if (NS_FAILED(rv) || read == 0) return rv;
        NS_ASSERTION(read == count, "poor data size assumption");
    }

    char *cursor = buffer;

    if (mFirstOnData) {
        // this is the first OnData() for this request. some servers
        // don't bother sending a token in the first "part." This is
        // illegal, but we'll handle the case anyway by shoving the
        // boundary token in for the server.
        mFirstOnData = false;
        NS_ASSERTION(!mBufLen, "this is our first time through, we can't have buffered data");
        const char * token = mToken.get();

        PushOverLine(cursor, bufLen);

        bool needMoreChars = bufLen < mTokenLen + 2;
        nsAutoCString firstBuffer(buffer, bufLen);
        int32_t posCR = firstBuffer.Find("\r");

        if (needMoreChars || (posCR == kNotFound)) {
            // we don't have enough data yet to make this comparison.
            // skip this check, and try again the next time OnData()
            // is called.
            mFirstOnData = true;
        } else if (mPackagedApp) {
            // We need to check the line starts with --
            if (!StringBeginsWith(firstBuffer, NS_LITERAL_CSTRING("--"))) {
                return NS_ERROR_FAILURE;
            }

            // If the boundary was set in the header,
            // we need to check it matches with the one in the file.
            if (mTokenLen &&
                !StringBeginsWith(Substring(firstBuffer, 2), mToken)) {
                return NS_ERROR_FAILURE;
            }

            // Save the token.
            if (!mTokenLen) {
                mToken = nsCString(Substring(firstBuffer, 2).BeginReading(),
                                   posCR - 2);
                mTokenLen = mToken.Length();
            }

            cursor = buffer;
        } else if (!PL_strnstr(cursor, token, mTokenLen + 2)) {
            char *newBuffer = (char *) realloc(buffer, bufLen + mTokenLen + 1);
            if (!newBuffer)
                return NS_ERROR_OUT_OF_MEMORY;
            buffer = newBuffer;

            memmove(buffer + mTokenLen + 1, buffer, bufLen);
            memcpy(buffer, token, mTokenLen);
            buffer[mTokenLen] = '\n';

            bufLen += (mTokenLen + 1);

            // need to reset cursor to the buffer again (bug 100595)
            cursor = buffer;
        }
    }

    char *token = nullptr;

    // This may get initialized by ParseHeaders and the resulting
    // HttpResponseHead will be passed to nsPartChannel by SendStart

    if (mProcessingHeaders) {
        // we were not able to process all the headers
        // for this "part" given the previous buffer given to 
        // us in the previous OnDataAvailable callback.
        bool done = false;
        rv = ParseHeaders(channel, cursor, bufLen, &done);
        if (NS_FAILED(rv)) return rv;

        if (done) {
            mProcessingHeaders = false;
            rv = SendStart(channel);
            if (NS_FAILED(rv)) return rv;
        }
    }

    int32_t tokenLinefeed = 1;
    while ( (token = FindToken(cursor, bufLen)) ) {

        if (((token + mTokenLen) < (cursor + bufLen)) &&
            (*(token + mTokenLen + 1) == '-')) {
            // This was the last delimiter so we can stop processing
            rv = SendData(cursor, LengthToToken(cursor, token));
            if (NS_FAILED(rv)) return rv;
            if (mPartChannel) {
                mPartChannel->SetIsLastPart();
            }
            return SendStop(NS_OK);
        }

        if (!mNewPart && token > cursor) {
            // headers are processed, we're pushing data now.
            NS_ASSERTION(!mProcessingHeaders, "we should be pushing raw data");
            rv = SendData(cursor, LengthToToken(cursor, token));
            bufLen -= token - cursor;
            if (NS_FAILED(rv)) return rv;
        }
        // XXX else NS_ASSERTION(token == cursor, "?");
        token += mTokenLen;
        bufLen -= mTokenLen;
        tokenLinefeed = PushOverLine(token, bufLen);

        if (mNewPart) {
            // parse headers
            mNewPart = false;
            cursor = token;
            bool done = false; 
            rv = ParseHeaders(channel, cursor, bufLen, &done);
            if (NS_FAILED(rv)) return rv;
            if (done) {
                rv = SendStart(channel);
                if (NS_FAILED(rv)) return rv;
            }
            else {
                // we haven't finished processing header info.
                // we'll break out and try to process later.
                mProcessingHeaders = true;
                break;
            }
        }
        else {
            mNewPart = true;
            // Reset state so we don't carry it over from part to part
            mContentType.Truncate();
            mContentLength = UINT64_MAX;
            mContentDisposition.Truncate();
            mIsByteRangeRequest = false;
            mByteRangeStart = 0;
            mByteRangeEnd = 0;
            
            rv = SendStop(NS_OK);
            if (NS_FAILED(rv)) return rv;
            // reset the token to front. this allows us to treat
            // the token as a starting token.
            token -= mTokenLen + tokenLinefeed;
            bufLen += mTokenLen + tokenLinefeed;
            cursor = token;
        }
    }

    // at this point, we want to buffer up whatever amount (bufLen)
    // we have leftover. However, we *always* want to ensure that
    // we buffer enough data to handle a broken token.

    // carry over
    uint32_t bufAmt = 0;
    if (mProcessingHeaders)
        bufAmt = bufLen;
    else if (bufLen) {
        // if the data ends in a linefeed, and we're in the middle
        // of a "part" (ie. mPartChannel exists) don't bother
        // buffering, go ahead and send the data we have. Otherwise
        // if we don't have a channel already, then we don't even
        // have enough info to start a part, go ahead and buffer
        // enough to collect a boundary token.
        if (!mPartChannel || !(cursor[bufLen-1] == nsCRT::LF) )
            bufAmt = std::min(mTokenLen - 1, bufLen);
    }

    if (bufAmt) {
        rv = BufferData(cursor + (bufLen - bufAmt), bufAmt);
        if (NS_FAILED(rv)) return rv;
        bufLen -= bufAmt;
    }

    if (bufLen) {
        rv = SendData(cursor, bufLen);
        if (NS_FAILED(rv)) return rv;
    }

    return rv;
}