C++ (Cpp) XSLPattern_to_XPath示例

示例#1

文件： selection.c 项目： Sunmonds/wine

HRESULT create_selection(xmlNodePtr node, xmlChar* query, IXMLDOMNodeList **out)
{
    domselection *This = heap_alloc(sizeof(domselection));
    xmlXPathContextPtr ctxt = xmlXPathNewContext(node->doc);
    HRESULT hr;

    TRACE("(%p, %s, %p)\n", node, wine_dbgstr_a((char const*)query), out);

    *out = NULL;
    if (!This || !ctxt || !query)
    {
        xmlXPathFreeContext(ctxt);
        heap_free(This);
        return E_OUTOFMEMORY;
    }

    This->IXMLDOMSelection_iface.lpVtbl = &domselection_vtbl;
    This->ref = 1;
    This->resultPos = 0;
    This->node = node;
    This->enumvariant = NULL;
    init_dispex(&This->dispex, (IUnknown*)&This->IXMLDOMSelection_iface, &domselection_dispex);
    xmldoc_add_ref(This->node->doc);

    ctxt->error = query_serror;
    ctxt->node = node;
    registerNamespaces(ctxt);

    if (is_xpathmode(This->node->doc))
    {
        xmlXPathRegisterAllFunctions(ctxt);
        This->result = xmlXPathEvalExpression(query, ctxt);
    }
    else
    {
        xmlChar* pattern_query = XSLPattern_to_XPath(ctxt, query);

        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"not", xmlXPathNotFunction);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"boolean", xmlXPathBooleanFunction);

        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"index", XSLPattern_index);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"end", XSLPattern_end);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"nodeType", XSLPattern_nodeType);

        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IEq", XSLPattern_OP_IEq);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_INEq", XSLPattern_OP_INEq);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_ILt", XSLPattern_OP_ILt);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_ILEq", XSLPattern_OP_ILEq);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IGt", XSLPattern_OP_IGt);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IGEq", XSLPattern_OP_IGEq);

        This->result = xmlXPathEvalExpression(pattern_query, ctxt);
        xmlFree(pattern_query);
    }

    if (!This->result || This->result->type != XPATH_NODESET)
    {
        hr = E_FAIL;
        goto cleanup;
    }

    *out = (IXMLDOMNodeList*)&This->IXMLDOMSelection_iface;
    hr = S_OK;
    TRACE("found %d matches\n", xmlXPathNodeSetGetLength(This->result->nodesetval));

cleanup:
    if (This && FAILED(hr))
        IXMLDOMSelection_Release( &This->IXMLDOMSelection_iface );
    xmlXPathFreeContext(ctxt);
    return hr;
}

示例#2

文件： queryresult.c 项目： mikekap/wine

HRESULT queryresult_create(xmlNodePtr node, xmlChar* szQuery, IXMLDOMNodeList **out)
{
    queryresult *This = heap_alloc_zero(sizeof(queryresult));
    xmlXPathContextPtr ctxt = xmlXPathNewContext(node->doc);
    HRESULT hr;

    TRACE("(%p, %s, %p)\n", node, wine_dbgstr_a((char const*)szQuery), out);

    *out = NULL;
    if (This == NULL || ctxt == NULL || szQuery == NULL)
    {
        hr = E_OUTOFMEMORY;
        goto cleanup;
    }

    This->lpVtbl = &queryresult_vtbl;
    This->ref = 1;
    This->resultPos = 0;
    This->node = node;
    xmldoc_add_ref(This->node->doc);

    ctxt->error = query_serror;
    ctxt->node = node;
    registerNamespaces(ctxt);

    if (is_xpathmode(This->node->doc))
    {
        xmlXPathRegisterAllFunctions(ctxt);
        This->result = xmlXPathEvalExpression(szQuery, ctxt);
    }
    else
    {
        xmlChar* xslpQuery = XSLPattern_to_XPath(ctxt, szQuery);

        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"not", xmlXPathNotFunction);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"boolean", xmlXPathBooleanFunction);

        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"index", XSLPattern_index);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"end", XSLPattern_end);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"nodeType", XSLPattern_nodeType);

        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IEq", XSLPattern_OP_IEq);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_INEq", XSLPattern_OP_INEq);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_ILt", XSLPattern_OP_ILt);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_ILEq", XSLPattern_OP_ILEq);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IGt", XSLPattern_OP_IGt);
        xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IGEq", XSLPattern_OP_IGEq);

        This->result = xmlXPathEvalExpression(xslpQuery, ctxt);
        xmlFree(xslpQuery);
    }

    if (!This->result || This->result->type != XPATH_NODESET)
    {
        hr = E_FAIL;
        goto cleanup;
    }

    init_dispex(&This->dispex, (IUnknown*)&This->lpVtbl, &queryresult_dispex);

    *out = (IXMLDOMNodeList *) &This->lpVtbl;
    hr = S_OK;
    TRACE("found %d matches\n", xmlXPathNodeSetGetLength(This->result->nodesetval));

cleanup:
    if (This != NULL && FAILED(hr))
        IXMLDOMNodeList_Release( (IXMLDOMNodeList*) &This->lpVtbl );
    xmlXPathFreeContext(ctxt);
    return hr;
}