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#include "StdAfx.h"
using _com_util::CheckError;
class CHTMLNode : public IHTMLNode
{
public:
typedef CComPtr<IDispatch> TComPtr;
typedef CComPtr<IHTMLDocument3> TDocumentPtr;
protected:
typedef CComPtr<IHTMLElementCollection> TElementCollectionPtr;
public:
CHTMLNode(const TComPtr& pElement, const TDocumentPtr& pDocument)
: m_pElement(pElement), m_pDocument(pDocument)
{
}
virtual THTMLNodePtr GetElementByID(const tstring& rsID)const
{
if (m_pDocument) {
CComPtr<IHTMLElement> pElement;
if (SUCCEEDED(m_pDocument->getElementById(bstr_t(rsID.c_str()), &pElement))
&& pElement) {
TComPtr p(pElement);
return THTMLNodePtr(new CHTMLNode(p, m_pDocument));
}
}
return THTMLNodePtr();
}
virtual size_t GetChildCount()const
{
TElementCollectionPtr pColl = GetElementCollectionPtr();
if (pColl) {
LONG celem = 0;
HRESULT hr = pColl->get_length(&celem);
if (S_OK == hr)
return celem;
}
return 0;
}
virtual THTMLNodePtr GetChildPtr(size_t nIndex)
{
TElementCollectionPtr pColl = GetElementCollectionPtr();
if (pColl) {
VARIANT varIndex;
varIndex.vt = VT_UINT;
varIndex.lVal = (LONG)nIndex;
VARIANT var2;
VariantInit(&var2);
TComPtr pDisp;
HRESULT hr = pColl->item(varIndex, var2, &pDisp);
if (S_OK == hr && pDisp)
return THTMLNodePtr(new CHTMLNode(pDisp, m_pDocument));
}
return THTMLNodePtr();
}
virtual bool Is(EType nType)const
{
switch (nType) {
case Table:
{
CComPtr<IHTMLTable> pTable;
return (SUCCEEDED(m_pElement->QueryInterface(IID_IHTMLTable, reinterpret_cast<void**>(&pTable))) && (pTable));
}
case TableRow:
{
CComPtr<IHTMLTableRow> pRow;
return (SUCCEEDED(m_pElement->QueryInterface(IID_IHTMLTableRow, reinterpret_cast<void**>(&pRow))) && (pRow));
}
case TableColumn:
{
CComPtr<IHTMLTableCol> pCol;
return (SUCCEEDED(m_pElement->QueryInterface(IID_IHTMLTableCol, reinterpret_cast<void**>(&pCol))) && (pCol));
}
}
return false;
}
virtual tstring GetAttribute(const tstring& rsAttrName)const
{
tstring sAttr;
CComPtr<IHTMLElement> pElement;
if (SUCCEEDED(m_pElement->QueryInterface(IID_IHTMLElement, reinterpret_cast<void**>(&pElement))) && pElement) {
_variant_t vAttribute;
BSTR pbstrAttrName = ::SysAllocString(rsAttrName.c_str());
if (SUCCEEDED(pElement->getAttribute(pbstrAttrName, 1, &vAttribute)) && VT_NULL != vAttribute.vt && VT_EMPTY != vAttribute.vt) {
try {
_bstr_t b(vAttribute);
LPCTSTR psz = b;
if (psz)
sAttr = psz;
}
catch (_com_error&) {
}
}
::SysFreeString(pbstrAttrName);
}
return sAttr;
}
virtual tstring GetText()const
{
tstring sText;
CComPtr<IHTMLElement> pElement;
if (SUCCEEDED(m_pElement->QueryInterface(IID_IHTMLElement, reinterpret_cast<void**>(&pElement))) && pElement) {
BSTR bstrText;
if (SUCCEEDED(pElement->get_innerText(&bstrText)) && bstrText) {
try {
sText = _bstr_t(bstrText);
}
catch (_com_error&) {
}
::SysFreeString(bstrText);
}
}
return sText;
}
protected:
virtual TElementCollectionPtr GetElementCollectionPtr()const
{
TElementCollectionPtr pColl;
HRESULT hr = m_pElement->QueryInterface(IID_IHTMLElementCollection, reinterpret_cast<void**>(&pColl));
if (FAILED(hr)) {
CComPtr<IHTMLElement> pElement;
if (SUCCEEDED(m_pElement->QueryInterface(IID_IHTMLElement, reinterpret_cast<void**>(&pElement))) && pElement) {
CComPtr<IDispatch> pDisp;
if (SUCCEEDED(pElement->get_children(&pDisp)) && pDisp)
pDisp->QueryInterface(IID_IHTMLElementCollection, reinterpret_cast<void**>(&pColl));
}
}
return pColl;
}
private:
TComPtr m_pElement;
TDocumentPtr m_pDocument;
};
CHTMLParserMS::CHTMLParserMS() : m_bCallUninit(false)
{
try {
CheckError(::CoInitialize(nullptr));
m_bCallUninit = true;
_com_util::CheckError(
::CoCreateInstance(CLSID_HTMLDocument,
nullptr,
CLSCTX_INPROC_SERVER,
IID_IHTMLDocument2,
(LPVOID*)&m_pDoc)
);
CComPtr<IPersistStreamInit> pPersist;
_com_util::CheckError(m_pDoc->QueryInterface(IID_IPersistStreamInit,
(LPVOID*)&pPersist));
_com_util::CheckError(pPersist->InitNew());
_com_util::CheckError(m_pDoc->QueryInterface(IID_IMarkupServices,
(LPVOID*)&m_pMS));
if (m_pMS) {
_com_util::CheckError(m_pMS->CreateMarkupPointer(&m_pMkStart));
_com_util::CheckError(m_pMS->CreateMarkupPointer(&m_pMkFinish));
}
}
catch (_com_error&/* e*/) {
// show_com_error_msg(e);
}
}
CHTMLParserMS::~CHTMLParserMS()
{
if (m_bCallUninit)
::CoUninitialize();
}
CHTMLParserMS::THTMLNodePtr CHTMLParserMS::ParseString(const tstring& rsHTML)
{
mir_cslock lck(m_cs);
CComPtr<IMarkupContainer> pMC;
HRESULT hr = m_pMS->ParseString((OLECHAR*)rsHTML.c_str(), 0, &pMC, m_pMkStart, m_pMkFinish);
if (SUCCEEDED(hr) && pMC) {
CComPtr<IHTMLDocument2> pNewDoc;
hr = pMC->QueryInterface(IID_IHTMLDocument, (LPVOID*)&pNewDoc);
if (SUCCEEDED(hr) && pNewDoc) {
CComPtr<IHTMLElementCollection> pColl;
pNewDoc->get_all(&pColl);
CHTMLNode::TDocumentPtr pDoc;
pMC->QueryInterface(IID_IHTMLDocument3, (LPVOID*)&pDoc);
return THTMLNodePtr(new CHTMLNode(CHTMLNode::TComPtr(pColl), pDoc));
}
}
return THTMLNodePtr();
}
bool CHTMLParserMS::IsInstalled()
{
bool bResult = true;
bool bCallUninit = false;
try {
CheckError(::CoInitialize(nullptr));
bCallUninit = true;
CComPtr<IHTMLDocument2> pDoc;
_com_util::CheckError(
::CoCreateInstance(CLSID_HTMLDocument,
nullptr,
CLSCTX_INPROC_SERVER,
IID_IHTMLDocument2,
reinterpret_cast<LPVOID*>(&pDoc))
);
}
catch (_com_error&/* e*/) {
bResult = false;
}
if (bCallUninit)
::CoUninitialize();
return bResult;
}
CHTMLEngineMS::CHTMLEngineMS()
{
}
CHTMLEngineMS::~CHTMLEngineMS()
{
}
CHTMLEngineMS::THTMLParserPtr CHTMLEngineMS::GetParserPtr()const
{
return THTMLParserPtr(new CHTMLParserMS);
}
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