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SOL9 2.0 Class: HTMLParser
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Source code
/******************************************************************************
*
* Copyright (c) 2008 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer.
*
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* HTMLParser.h
*
*****************************************************************************/
//2008/09/30 Simple HTMLParser based on IHTMLDocument2 interface.
//2012/02/16 Updated loadString method.
//2012/02/17 Modified to include <sol/Object.h> and not to import <mshtml.tlb>
// See the the following code.
// http://209.85.175.104/search?
// q=cache:zDWb5JtAMfIJ:www.ddj.com/architect/184411019+HTMLParser+IOleClientSite&hl=ja&ct=clnk&cd=3&gl=jp
//See also the following url.
//1: http://www.codeproject.com/KB/IP/parse_html.aspx?
//fid=3219&df=90&mpp=25&noise=3&sort=Position&view=Quick&fr=76&select=249106
#pragma once
#include <sol/Object.h>
#include <sol/Exception.h> //2015/07/15
#include <mshtmdid.h>
#include <docobj.h>
#include <sol/Wchardef.h>
//namespace = MSHTML
//2012/02/17 #import "mshtml.tlb" named_guids
#define WM_HTML_COMPLETE WM_USER+2009
//
namespace SOL
{
/**
* class HTMLParser without GUI of IE.
*/
class HTMLParser: public IPropertyNotifySink,
IOleClientSite, IDispatch {
private:
// Member variables
DWORD dwRef;
DWORD dwCookie;
IHTMLDocument2* pHTMLDocument;
IConnectionPoint* pCP;
public:
/**
* Construtor
*/
HTMLParser()
:dwRef(1),
dwCookie(0),
pHTMLDocument(NULL),
pCP(NULL)
{
HRESULT hr = S_OK;
try {
//Create an instance of IHTMLDocument2, because we don't need IE UI.
if (FAILED(hr = CoCreateInstance( CLSID_HTMLDocument, NULL,
CLSCTX_INPROC_SERVER, IID_IHTMLDocument2, (LPVOID*)&pHTMLDocument ))) {
throw Exception(E_FAIL, "%s: %s", "E_FAIL",__FUNCTION__);//Failed to create MSHTMLDocument;
}
LPOLEOBJECT pOleObject = NULL;
if (FAILED(hr = pHTMLDocument->QueryInterface(IID_IOleObject,
(LPVOID*)&pOleObject))) {
throw Exception(E_FAIL, "%s: %s", "E_FAIL",__FUNCTION__);//Failed to query OleObject;
}
hr = pOleObject->SetClientSite((IOleClientSite*)this);
pOleObject->Release();
//OleControl
LPOLECONTROL pOleControl = NULL;
if (FAILED(hr = pHTMLDocument->QueryInterface(IID_IOleControl,
(LPVOID*)&pOleControl))) {
throw Exception(E_FAIL, "%s: %s", "E_FAIL",__FUNCTION__);//Failed to query ConnectionPoint;
}
hr = pOleControl->OnAmbientPropertyChange(DISPID_AMBIENT_DLCONTROL);
pOleControl->Release();
IConnectionPointContainer* tmppCPC = NULL;
if (FAILED(hr = pHTMLDocument->QueryInterface(IID_IConnectionPointContainer,
(LPVOID*)&tmppCPC))) {
throw Exception(E_FAIL, "%s: %s", "E_FAIL",__FUNCTION__);//Failed to query ConnectionPoint;
}
if (FAILED(hr = tmppCPC->FindConnectionPoint(IID_IPropertyNotifySink,
&pCP))){
tmppCPC->Release();
throw hr ;//Failed to find ConnectionPoint;
}
tmppCPC->Release();
if (FAILED(hr = pCP->Advise((LPUNKNOWN)(IPropertyNotifySink*)this,
&dwCookie))) {
throw Exception(E_FAIL, "%s: %s", "E_FAIL",__FUNCTION__); //Failed to Advice;
}
} catch (HRESULT hr) {
clear();
throw Exception(E_FAIL, "%s: %s HRESULT(%ld)", "E_FAIL",__FUNCTION__, hr);
}
}
public:
/**
* Destructor
*/
~HTMLParser()
{
clear();
}
private:
void clear()
{
if (pCP) {
pCP->Unadvise(dwCookie);
pCP->Release();
}
if (pHTMLDocument) {
pHTMLDocument->Release();
}
pCP = NULL;
pHTMLDocument = NULL;
}
public:
STDMETHODIMP QueryInterface(REFIID riid, LPVOID* ppv)
{
*ppv = NULL;
if (IID_IUnknown == riid || IID_IPropertyNotifySink == riid) {
*ppv = (LPUNKNOWN)(IPropertyNotifySink*)this;
AddRef();
return NOERROR;
} else if (IID_IOleClientSite == riid) {
*ppv = (IOleClientSite*)this;
AddRef();
return NOERROR;
} else if (IID_IDispatch == riid) {
*ppv = (IDispatch*)this;
AddRef();
return NOERROR;
} else {
return E_NOTIMPL;
}
}
public:
STDMETHOD_(ULONG, AddRef)()
{
return ++dwRef;
}
public:
STDMETHOD_(ULONG, Release)()
{
if (--dwRef == 0) {
delete this;
return 0;
}
return dwRef;
}
public:
STDMETHODIMP OnChanged(DISPID dispID)
{
HRESULT hr;
if (DISPID_READYSTATE == dispID){
VARIANT vResult = {0};
EXCEPINFO excepInfo;
UINT uArgErr;
long lReadyState;
DISPPARAMS dp = {NULL, NULL, 0, 0};
if (SUCCEEDED(hr = pHTMLDocument->Invoke(DISPID_READYSTATE, IID_NULL,
LOCALE_SYSTEM_DEFAULT, DISPATCH_PROPERTYGET,
&dp, &vResult, &excepInfo, &uArgErr))) {
lReadyState = (READYSTATE)V_I4(&vResult);
switch (lReadyState) {
case READYSTATE_UNINITIALIZED:
case READYSTATE_LOADING:
case READYSTATE_LOADED:
case READYSTATE_INTERACTIVE:
break;
case READYSTATE_COMPLETE:
printf("ReadState_Complete\n");
// IE has just finished parsing the HTML file(READYSTATE_COMPLETE).
// Post a WM_HTML_COMPLETE message to this current thread.
PostThreadMessage(GetCurrentThreadId(),
WM_HTML_COMPLETE, (WPARAM)0, (LPARAM)0);
break;
}
VariantClear(&vResult);
}
}
return NOERROR;
}
public:
/**
* If DISPID== DISPID_AMBIENT_DLCONTROL, set the following flags to return value,
* because this is a UI-less HTML Parser.
*
* DLCTL_DOWNLOADONLY |
* DLCTL_NO_SCRIPTS |
* DLCTL_NO_JAVA |
* DLCTL_NO_DLACTIVEXCTLS |
* DLCTL_NO_RUNACTIVEXCTLS;
*/
STDMETHODIMP Invoke(DISPID dispIdMember, REFIID riid, LCID lcid,
WORD wFlags, DISPPARAMS __RPC_FAR *pDispParams,
VARIANT __RPC_FAR *pVarResult, EXCEPINFO __RPC_FAR *pExcepInfo,
UINT __RPC_FAR *puArgErr)
{
if (!pVarResult){
return E_POINTER;
}
switch(dispIdMember) {
case DISPID_AMBIENT_DLCONTROL:
printf("HTMLParser::Invoke,DISPID_AMBIENT_DLCONTROL\n");
V_VT(pVarResult) = VT_I4;
V_I4(pVarResult) = DLCTL_DOWNLOADONLY |
DLCTL_NO_SCRIPTS |
DLCTL_NO_JAVA |
DLCTL_NO_DLACTIVEXCTLS |
DLCTL_NO_RUNACTIVEXCTLS;
break;
default:
return DISP_E_MEMBERNOTFOUND;
}
return NOERROR;
}
protected:
STDMETHODIMP OnRequestEdit(DISPID dispID) {
return NOERROR;
}
// IOleClientSite methods
STDMETHODIMP SaveObject(void) {
return E_NOTIMPL;
}
STDMETHODIMP GetMoniker(DWORD dwAssign,
DWORD dwWhichMoniker, IMoniker** ppmk){
return E_NOTIMPL;
}
STDMETHODIMP GetContainer(IOleContainer** ppContainer){
return E_NOTIMPL;
}
STDMETHODIMP ShowObject(void){
return E_NOTIMPL;
}
STDMETHODIMP OnShowWindow(BOOL fShow){
return E_NOTIMPL;
}
STDMETHODIMP RequestNewObjectLayout(void){
return E_NOTIMPL;
}
// IDispatch method
STDMETHODIMP GetTypeInfoCount(UINT* pctinfo){
return E_NOTIMPL;
}
STDMETHODIMP GetTypeInfo(UINT iTInfo, LCID lcid, ITypeInfo** ppTInfo){
return E_NOTIMPL;
}
STDMETHODIMP GetIDsOfNames(REFIID riid, LPOLESTR* rgszNames,
UINT cNames, LCID lcid, DISPID* rgDispId){
return E_NOTIMPL;
}
public:
/**
* Load HTML from an interface of IStream.
*/
HRESULT loadFromStream(IStream* pStream)
{
HRESULT hr = E_FAIL;
IPersistStreamInit* pPersistStreamInit = NULL;
if (pHTMLDocument != NULL) {
if (SUCCEEDED(pHTMLDocument->QueryInterface(IID_IPersistStreamInit,
(void**)&pPersistStreamInit))) {
if (SUCCEEDED(pPersistStreamInit->InitNew())) {
if (SUCCEEDED(hr = pPersistStreamInit->Load(pStream))) {
wait();
}
}
pPersistStreamInit->Release();
}
}
return hr;
}
public:
/**
* LoadFrom a string.
*/
HRESULT loadFromString(const TCHAR* html)
{
HRESULT hr = E_FAIL;
if (html == NULL) {
return hr;
}
//<Modified at="2012/02/16">
int cchLength = strlen(html)+1;
int nBytes = cchLength* sizeof(TCHAR);
HGLOBAL hHTML = GlobalAlloc(GPTR, nBytes);
if (hHTML){
void* buff = GlobalLock(hHTML);
memcpy(buff, html, nBytes);
GlobalUnlock(hHTML);
IStream* pStream = NULL;
if (SUCCEEDED(hr = CreateStreamOnHGlobal(hHTML, FALSE, &pStream))) {
//</Modified>
ULARGE_INTEGER size;
size.QuadPart = nBytes;
pStream->SetSize(size);
hr = loadFromStream(pStream);
pStream->Release();
}
GlobalFree(hHTML);
}
return hr;
}
public:
/**
* Load an HTML file something like iC:\root\htmo\sample.htmlj
*
*/
HRESULT loadFromFile(const TCHAR* filePath)
{
HRESULT hr =E_FAIL;
if (filePath == NULL) {
return hr;
}
if (GetFileAttributes(filePath) == 0xffffffff ){
printf("File is access error\n");
return hr;
}
_bstr_t bstrFile(filePath);
IPersistFile* pPF = NULL;
//Get an interface for IID_IPersistFile.
if (SUCCEEDED(hr = pHTMLDocument->QueryInterface(IID_IPersistFile,
(LPVOID*) &pPF))) {
//Load the content by using a IPersitentFile interface.
if (SUCCEEDED(hr = pPF->Load((LPCWSTR)bstrFile, STGM_READ | STGM_SHARE_DENY_NONE))) {
wait();
}
pPF->Release();
}
return hr;
}
public:
/**
*/
void wait() {
MSG msg;
while (GetMessage(&msg, NULL, 0, 0)) {
// Notification from OnChanged
if (WM_HTML_COMPLETE == msg.message && NULL == msg.hwnd) {
printf("HTMLParser#wait,1,OK,loading completed\n");
break;
} else {
DispatchMessage(&msg);
}
}
}
public:
IHTMLDocument2* getHTMLDocument()
{
if (pHTMLDocument) {
pHTMLDocument->AddRef();
}
return this->pHTMLDocument;
}
};
}
Last modified: 5 May 2019
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