示例#1
0
文件: domnode.cpp 项目: z4y4/njord
JSBool getElementsByTagName(JSContext * cx, JSObject * obj, uintN argc, jsval * argv, jsval * rval)
{
	nsCOMPtr<nsIDOMNode> mNode = (nsIDOMNode*)JS_GetPrivate(cx, obj);
	nsresult rv;
	nsCOMPtr<nsIDOMElement> mElement = do_QueryInterface(mNode, &rv);
	if(NS_FAILED(rv))
	{
		*rval = JSVAL_FALSE;
		return JS_TRUE;
	}
	LPWSTR tagName;
	JS_BeginRequest(cx);
	if(!JS_ConvertArguments(cx, argc, argv, "W", &tagName))
	{
		JS_ReportError(cx, "error parsing arguments in getelements by tagname");
		JS_EndRequest(cx);
		return JS_FALSE;
	}

	nsDependentString aTagName(tagName);
	nsIDOMNodeList * mNodeList;
	mElement->GetElementsByTagName(aTagName, &mNodeList);
	buildNodeList(mNodeList, cx, obj, rval);
	mNodeList->Release();
	JS_EndRequest(cx);
	return JS_TRUE;
}
示例#2
0
文件: domnode.cpp 项目: z4y4/njord
JSBool childGetter(JSContext * cx, JSObject * obj, jsval idval, jsval * vp)
{
	JS_BeginRequest(cx);
	nsCOMPtr<nsIDOMNode> mNode = (nsIDOMNode*)JS_GetPrivate(cx, obj);
	JSString * idvalStr = JS_ValueToString(cx, idval);
	jschar * idvalChars = JS_GetStringChars(idvalStr);
	if(_wcsicmp(idvalChars, TEXT("childNodes")) == 0)
	{
		nsIDOMNodeList * nodeList;
		mNode->GetChildNodes(&nodeList);
		buildNodeList(nodeList, cx, obj, vp);
		nodeList->Release();
	}
	else
		*vp = JSVAL_NULL;
	JS_EndRequest(cx);
	return JS_TRUE;
}
示例#3
0
void Compression::huffmanEncode(const char* inputFile)
{
    FILE * src = fopen(inputFile, "rb");

    char outputPath[1000];
    const char * fileExtension = ".bin";
    outputFilePath(inputFile, outputPath, fileExtension);
    FILE * dest = fopen(outputPath, "wb");

    if (src == NULL || dest == NULL)
    {
        printf("Не удается найти файл.");
        exit(EXIT_FAILURE);
    }

    unsigned int fileSize;
    fileSize = getFileSize(src);

    unsigned int * freqList;
    freqList = (unsigned int *)calloc(CHARS_LIMIT, sizeof(unsigned int));
    calcCharFreq(src, freqList);

    unsigned int numOfFreq;
    numOfFreq = calcNumOfFreq(freqList);

    HuffNode * nodeList = NULL;
    buildNodeList(&nodeList, freqList);

    buildHuffTree(&nodeList);
    HuffNode * treeRoot = nodeList;

    unsigned int i;
    HuffCode newCode;
    HuffCode * huffCodeTable;
    huffCodeTable = (HuffCode *)calloc(CHARS_LIMIT, sizeof(HuffCode));
    for(i=0; i<CHARS_LIMIT; i++)
    {
        if(freqList[i] > 0)
        {
            newCode.length = 0;
            buildHuffCode(treeRoot, &newCode, i);
            huffCodeTable[i] = newCode;
        }
    }

    HuffHeader hHeader;
    writeHeader(dest, hHeader, numOfFreq, fileSize);

    HuffFreq hFreq;
    writeFreq(dest, freqList, hFreq);

    writeEncodedData(src, dest, huffCodeTable, fileSize);

    freeHuffTree(treeRoot);
    treeRoot = NULL;
    free(huffCodeTable);
    free(freqList);

    fclose(src);
    fclose(dest);
}