/*
 *    DOM CDATA node implementation
 *
 * Copyright 2007 Alistair Leslie-Hughes
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#define COBJMACROS

#include "config.h"

#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "ole2.h"
#include "msxml6.h"

#include "msxml_private.h"

#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(msxml);

#ifdef HAVE_LIBXML2

typedef struct _domcdata
{
    xmlnode node;
    const struct IXMLDOMCDATASectionVtbl *lpVtbl;
    LONG ref;
} domcdata;

static inline domcdata *impl_from_IXMLDOMCDATASection( IXMLDOMCDATASection *iface )
{
    return (domcdata *)((char*)iface - FIELD_OFFSET(domcdata, lpVtbl));
}

static HRESULT WINAPI domcdata_QueryInterface(
    IXMLDOMCDATASection *iface,
    REFIID riid,
    void** ppvObject )
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppvObject);

    if ( IsEqualGUID( riid, &IID_IXMLDOMCDATASection ) ||
         IsEqualGUID( riid, &IID_IXMLDOMCharacterData) ||
         IsEqualGUID( riid, &IID_IXMLDOMNode ) ||
         IsEqualGUID( riid, &IID_IDispatch ) ||
         IsEqualGUID( riid, &IID_IUnknown ) )
    {
        *ppvObject = iface;
    }
    else if ( IsEqualGUID( riid, &IID_IXMLDOMText ) ||
              IsEqualGUID( riid, &IID_IXMLDOMElement ) )
    {
        TRACE("Unsupported interface\n");
        return E_NOINTERFACE;
    }
    else if(node_query_interface(&This->node, riid, ppvObject))
    {
        return *ppvObject ? S_OK : E_NOINTERFACE;
    }
    else
    {
        FIXME("Unsupported interface %s\n", debugstr_guid(riid));
        return E_NOINTERFACE;
    }

    IXMLDOMText_AddRef((IUnknown*)*ppvObject);
    return S_OK;
}

static ULONG WINAPI domcdata_AddRef(
    IXMLDOMCDATASection *iface )
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return InterlockedIncrement( &This->ref );
}

static ULONG WINAPI domcdata_Release(
    IXMLDOMCDATASection *iface )
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    ULONG ref;

    ref = InterlockedDecrement( &This->ref );
    if ( ref == 0 )
    {
        destroy_xmlnode(&This->node);
        heap_free( This );
    }

    return ref;
}

static HRESULT WINAPI domcdata_GetTypeInfoCount(
    IXMLDOMCDATASection *iface,
    UINT* pctinfo )
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(%p)\n", This, pctinfo);

    *pctinfo = 1;

    return S_OK;
}

static HRESULT WINAPI domcdata_GetTypeInfo(
    IXMLDOMCDATASection *iface,
    UINT iTInfo, LCID lcid,
    ITypeInfo** ppTInfo )
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    HRESULT hr;

    TRACE("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);

    hr = get_typeinfo(IXMLDOMCDATASection_tid, ppTInfo);

    return hr;
}

static HRESULT WINAPI domcdata_GetIDsOfNames(
    IXMLDOMCDATASection *iface,
    REFIID riid, LPOLESTR* rgszNames,
    UINT cNames, LCID lcid, DISPID* rgDispId )
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    ITypeInfo *typeinfo;
    HRESULT hr;

    TRACE("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames,
          lcid, rgDispId);

    if(!rgszNames || cNames == 0 || !rgDispId)
        return E_INVALIDARG;

    hr = get_typeinfo(IXMLDOMCDATASection_tid, &typeinfo);
    if(SUCCEEDED(hr))
    {
        hr = ITypeInfo_GetIDsOfNames(typeinfo, rgszNames, cNames, rgDispId);
        ITypeInfo_Release(typeinfo);
    }

    return hr;
}

static HRESULT WINAPI domcdata_Invoke(
    IXMLDOMCDATASection *iface,
    DISPID dispIdMember, REFIID riid, LCID lcid,
    WORD wFlags, DISPPARAMS* pDispParams, VARIANT* pVarResult,
    EXCEPINFO* pExcepInfo, UINT* puArgErr )
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    ITypeInfo *typeinfo;
    HRESULT hr;

    TRACE("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
          lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);

    hr = get_typeinfo(IXMLDOMCDATASection_tid, &typeinfo);
    if(SUCCEEDED(hr))
    {
        hr = ITypeInfo_Invoke(typeinfo, &(This->lpVtbl), dispIdMember, wFlags, pDispParams,
                pVarResult, pExcepInfo, puArgErr);
        ITypeInfo_Release(typeinfo);
    }

    return hr;
}

static HRESULT WINAPI domcdata_get_nodeName(
    IXMLDOMCDATASection *iface,
    BSTR* p )
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    static const WCHAR cdata_sectionW[] =
        {'#','c','d','a','t','a','-','s','e','c','t','i','o','n',0};

    TRACE("(%p)->(%p)\n", This, p);

    return return_bstr(cdata_sectionW, p);
}

static HRESULT WINAPI domcdata_get_nodeValue(
    IXMLDOMCDATASection *iface,
    VARIANT* value)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(%p)\n", This, value);

    return node_get_content(&This->node, value);
}

static HRESULT WINAPI domcdata_put_nodeValue(
    IXMLDOMCDATASection *iface,
    VARIANT value)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(v%d)\n", This, V_VT(&value));

    return node_put_value(&This->node, &value);
}

static HRESULT WINAPI domcdata_get_nodeType(
    IXMLDOMCDATASection *iface,
    DOMNodeType* domNodeType )
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(%p)\n", This, domNodeType);

    *domNodeType = NODE_CDATA_SECTION;
    return S_OK;
}

static HRESULT WINAPI domcdata_get_parentNode(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode** parent )
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(%p)\n", This, parent);

    return node_get_parent(&This->node, parent);
}

static HRESULT WINAPI domcdata_get_childNodes(
    IXMLDOMCDATASection *iface,
    IXMLDOMNodeList** outList)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(%p)\n", This, outList);

    return node_get_child_nodes(&This->node, outList);
}

static HRESULT WINAPI domcdata_get_firstChild(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode** domNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(%p)\n", This, domNode);

    return return_null_node(domNode);
}

static HRESULT WINAPI domcdata_get_lastChild(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode** domNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(%p)\n", This, domNode);

    return return_null_node(domNode);
}

static HRESULT WINAPI domcdata_get_previousSibling(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode** domNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(%p)\n", This, domNode);

    return node_get_previous_sibling(&This->node, domNode);
}

static HRESULT WINAPI domcdata_get_nextSibling(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode** domNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(%p)\n", This, domNode);

    return node_get_next_sibling(&This->node, domNode);
}

static HRESULT WINAPI domcdata_get_attributes(
    IXMLDOMCDATASection *iface,
    IXMLDOMNamedNodeMap** attributeMap)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    TRACE("(%p)->(%p)\n", This, attributeMap);

    return return_null_ptr((void**)attributeMap);
}

static HRESULT WINAPI domcdata_insertBefore(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode* newNode, VARIANT refChild,
    IXMLDOMNode** outOldNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    FIXME("(%p)->(%p x%d %p) needs test\n", This, newNode, V_VT(&refChild), outOldNode);

    return node_insert_before(&This->node, newNode, &refChild, outOldNode);
}

static HRESULT WINAPI domcdata_replaceChild(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode* newNode,
    IXMLDOMNode* oldNode,
    IXMLDOMNode** outOldNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );

    FIXME("(%p)->(%p %p %p) needs tests\n", This, newNode, oldNode, outOldNode);

    return node_replace_child(&This->node, newNode, oldNode, outOldNode);
}

static HRESULT WINAPI domcdata_removeChild(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode* domNode, IXMLDOMNode** oldNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_removeChild( IXMLDOMNode_from_impl(&This->node), domNode, oldNode );
}

static HRESULT WINAPI domcdata_appendChild(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode* newNode, IXMLDOMNode** outNewNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_appendChild( IXMLDOMNode_from_impl(&This->node), newNode, outNewNode );
}

static HRESULT WINAPI domcdata_hasChildNodes(
    IXMLDOMCDATASection *iface,
    VARIANT_BOOL* pbool)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_hasChildNodes( IXMLDOMNode_from_impl(&This->node), pbool );
}

static HRESULT WINAPI domcdata_get_ownerDocument(
    IXMLDOMCDATASection *iface,
    IXMLDOMDocument** domDocument)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_get_ownerDocument( IXMLDOMNode_from_impl(&This->node), domDocument );
}

static HRESULT WINAPI domcdata_cloneNode(
    IXMLDOMCDATASection *iface,
    VARIANT_BOOL pbool, IXMLDOMNode** outNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_cloneNode( IXMLDOMNode_from_impl(&This->node), pbool, outNode );
}

static HRESULT WINAPI domcdata_get_nodeTypeString(
    IXMLDOMCDATASection *iface,
    BSTR* p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_get_nodeTypeString( IXMLDOMNode_from_impl(&This->node), p );
}

static HRESULT WINAPI domcdata_get_text(
    IXMLDOMCDATASection *iface,
    BSTR* p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_get_text( IXMLDOMNode_from_impl(&This->node), p );
}

static HRESULT WINAPI domcdata_put_text(
    IXMLDOMCDATASection *iface,
    BSTR p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    TRACE("(%p)->(%p)\n", This, debugstr_w(p));
    return node_put_text( &This->node, p );
}

static HRESULT WINAPI domcdata_get_specified(
    IXMLDOMCDATASection *iface,
    VARIANT_BOOL* isSpecified)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    FIXME("(%p)->(%p) stub!\n", This, isSpecified);
    *isSpecified = VARIANT_TRUE;
    return S_OK;
}

static HRESULT WINAPI domcdata_get_definition(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode** definitionNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    FIXME("(%p)->(%p)\n", This, definitionNode);
    return E_NOTIMPL;
}

static HRESULT WINAPI domcdata_get_nodeTypedValue(
    IXMLDOMCDATASection *iface,
    VARIANT* var1)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_get_nodeTypedValue( IXMLDOMNode_from_impl(&This->node), var1 );
}

static HRESULT WINAPI domcdata_put_nodeTypedValue(
    IXMLDOMCDATASection *iface,
    VARIANT var1)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_put_nodeTypedValue( IXMLDOMNode_from_impl(&This->node), var1 );
}

static HRESULT WINAPI domcdata_get_dataType(
    IXMLDOMCDATASection *iface,
    VARIANT* typename)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    TRACE("(%p)->(%p)\n", This, typename);
    return return_null_var( typename );
}

static HRESULT WINAPI domcdata_put_dataType(
    IXMLDOMCDATASection *iface,
    BSTR p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_put_dataType( IXMLDOMNode_from_impl(&This->node), p );
}

static HRESULT WINAPI domcdata_get_xml(
    IXMLDOMCDATASection *iface,
    BSTR* p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_get_xml( IXMLDOMNode_from_impl(&This->node), p );
}

static HRESULT WINAPI domcdata_transformNode(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode* domNode, BSTR* p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_transformNode( IXMLDOMNode_from_impl(&This->node), domNode, p );
}

static HRESULT WINAPI domcdata_selectNodes(
    IXMLDOMCDATASection *iface,
    BSTR p, IXMLDOMNodeList** outList)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_selectNodes( IXMLDOMNode_from_impl(&This->node), p, outList );
}

static HRESULT WINAPI domcdata_selectSingleNode(
    IXMLDOMCDATASection *iface,
    BSTR p, IXMLDOMNode** outNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_selectSingleNode( IXMLDOMNode_from_impl(&This->node), p, outNode );
}

static HRESULT WINAPI domcdata_get_parsed(
    IXMLDOMCDATASection *iface,
    VARIANT_BOOL* isParsed)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    FIXME("(%p)->(%p) stub!\n", This, isParsed);
    *isParsed = VARIANT_TRUE;
    return S_OK;
}

static HRESULT WINAPI domcdata_get_namespaceURI(
    IXMLDOMCDATASection *iface,
    BSTR* p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_get_namespaceURI( IXMLDOMNode_from_impl(&This->node), p );
}

static HRESULT WINAPI domcdata_get_prefix(
    IXMLDOMCDATASection *iface,
    BSTR* p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_get_prefix( IXMLDOMNode_from_impl(&This->node), p );
}

static HRESULT WINAPI domcdata_get_baseName(
    IXMLDOMCDATASection *iface,
    BSTR* p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_get_baseName( IXMLDOMNode_from_impl(&This->node), p );
}

static HRESULT WINAPI domcdata_transformNodeToObject(
    IXMLDOMCDATASection *iface,
    IXMLDOMNode* domNode, VARIANT var1)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    return IXMLDOMNode_transformNodeToObject( IXMLDOMNode_from_impl(&This->node), domNode, var1 );
}

static HRESULT WINAPI domcdata_get_data(
    IXMLDOMCDATASection *iface,
    BSTR *p)
{
    HRESULT hr;
    VARIANT vRet;

    if(!p)
        return E_INVALIDARG;

    hr = IXMLDOMCDATASection_get_nodeValue( iface, &vRet );
    if(hr == S_OK)
    {
        *p = V_BSTR(&vRet);
    }

    return hr;
}

static HRESULT WINAPI domcdata_put_data(
    IXMLDOMCDATASection *iface,
    BSTR data)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    VARIANT val;

    TRACE("(%p)->(%s)\n", This, debugstr_w(data) );

    V_VT(&val) = VT_BSTR;
    V_BSTR(&val) = data;

    return IXMLDOMCDATASection_put_nodeValue( iface, val );
}

static HRESULT WINAPI domcdata_get_length(
    IXMLDOMCDATASection *iface,
    LONG *len)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    HRESULT hr;
    BSTR data;

    TRACE("(%p)->(%p)\n", This, len);

    if(!len)
        return E_INVALIDARG;

    hr = IXMLDOMCDATASection_get_data(iface, &data);
    if(hr == S_OK)
    {
        *len = SysStringLen(data);
        SysFreeString(data);
    }

    return S_OK;
}

static HRESULT WINAPI domcdata_substringData(
    IXMLDOMCDATASection *iface,
    LONG offset, LONG count, BSTR *p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    HRESULT hr;
    BSTR data;

    TRACE("(%p)->(%d %d %p)\n", This, offset, count, p);

    if(!p)
        return E_INVALIDARG;

    *p = NULL;
    if(offset < 0 || count < 0)
        return E_INVALIDARG;

    if(count == 0)
        return S_FALSE;

    hr = IXMLDOMCDATASection_get_data(iface, &data);
    if(hr == S_OK)
    {
        LONG len = SysStringLen(data);

        if(offset < len)
        {
            if(offset + count > len)
                *p = SysAllocString(&data[offset]);
            else
                *p = SysAllocStringLen(&data[offset], count);
        }
        else
            hr = S_FALSE;

        SysFreeString(data);
    }

    return hr;
}

static HRESULT WINAPI domcdata_appendData(
    IXMLDOMCDATASection *iface,
    BSTR p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    HRESULT hr;
    BSTR data;
    LONG p_len;

    TRACE("(%p)->(%s)\n", This, debugstr_w(p));

    /* Nothing to do if NULL or an Empty string passed in. */
    if((p_len = SysStringLen(p)) == 0) return S_OK;

    hr = IXMLDOMCDATASection_get_data(iface, &data);
    if(hr == S_OK)
    {
        LONG len = SysStringLen(data);
        BSTR str = SysAllocStringLen(NULL, p_len + len);

        memcpy(str, data, len*sizeof(WCHAR));
        memcpy(&str[len], p, p_len*sizeof(WCHAR));
        str[len+p_len] = 0;

        hr = IXMLDOMCDATASection_put_data(iface, str);

        SysFreeString(str);
        SysFreeString(data);
    }

    return hr;
}

static HRESULT WINAPI domcdata_insertData(
    IXMLDOMCDATASection *iface,
    LONG offset, BSTR p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    HRESULT hr;
    BSTR data;
    LONG p_len;

    TRACE("(%p)->(%d %s)\n", This, offset, debugstr_w(p));

    /* If have a NULL or empty string, don't do anything. */
    if((p_len = SysStringLen(p)) == 0)
        return S_OK;

    if(offset < 0)
    {
        return E_INVALIDARG;
    }

    hr = IXMLDOMCDATASection_get_data(iface, &data);
    if(hr == S_OK)
    {
        LONG len = SysStringLen(data);
        BSTR str;

        if(len < offset)
        {
            SysFreeString(data);
            return E_INVALIDARG;
        }

        str = SysAllocStringLen(NULL, len + p_len);
        /* start part, supplied string and end part */
        memcpy(str, data, offset*sizeof(WCHAR));
        memcpy(&str[offset], p, p_len*sizeof(WCHAR));
        memcpy(&str[offset+p_len], &data[offset], (len-offset)*sizeof(WCHAR));
        str[len+p_len] = 0;

        hr = IXMLDOMCDATASection_put_data(iface, str);

        SysFreeString(str);
        SysFreeString(data);
    }

    return hr;
}

static HRESULT WINAPI domcdata_deleteData(
    IXMLDOMCDATASection *iface,
    LONG offset, LONG count)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    HRESULT hr;
    LONG len = -1;
    BSTR str;

    TRACE("(%p)->(%d %d)\n", This, offset, count);

    hr = IXMLDOMCDATASection_get_length(iface, &len);
    if(hr != S_OK) return hr;

    if((offset < 0) || (offset > len) || (count < 0))
        return E_INVALIDARG;

    if(len == 0) return S_OK;

    /* cutting start or end */
    if((offset == 0) || ((count + offset) >= len))
    {
        if(offset == 0)
            IXMLDOMCDATASection_substringData(iface, count, len - count, &str);
        else
            IXMLDOMCDATASection_substringData(iface, 0, offset, &str);
        hr = IXMLDOMCDATASection_put_data(iface, str);
    }
    else
    /* cutting from the inside */
    {
        BSTR str_end;

        IXMLDOMCDATASection_substringData(iface, 0, offset, &str);
        IXMLDOMCDATASection_substringData(iface, offset + count, len - count, &str_end);

        hr = IXMLDOMCDATASection_put_data(iface, str);
        if(hr == S_OK)
            hr = IXMLDOMCDATASection_appendData(iface, str_end);

        SysFreeString(str_end);
    }

    SysFreeString(str);

    return hr;
}

static HRESULT WINAPI domcdata_replaceData(
    IXMLDOMCDATASection *iface,
    LONG offset, LONG count, BSTR p)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    HRESULT hr;

    TRACE("(%p)->(%d %d %s)\n", This, offset, count, debugstr_w(p));

    hr = IXMLDOMCDATASection_deleteData(iface, offset, count);

    if (hr == S_OK)
       hr = IXMLDOMCDATASection_insertData(iface, offset, p);

    return hr;
}

static HRESULT WINAPI domcdata_splitText(
    IXMLDOMCDATASection *iface,
    LONG offset, IXMLDOMText **txtNode)
{
    domcdata *This = impl_from_IXMLDOMCDATASection( iface );
    IXMLDOMDocument *doc;
    LONG length = 0;
    HRESULT hr;

    TRACE("(%p)->(%d %p)\n", This, offset, txtNode);

    if (!txtNode || offset < 0) return E_INVALIDARG;

    *txtNode = NULL;

    IXMLDOMCDATASection_get_length(iface, &length);

    if (offset > length) return E_INVALIDARG;
    if (offset == length) return S_FALSE;

    hr = IXMLDOMCDATASection_get_ownerDocument(iface, &doc);
    if (hr == S_OK)
    {
        BSTR data;

        hr = IXMLDOMCDATASection_substringData(iface, offset, length - offset, &data);
        if (hr == S_OK)
        {
            hr = IXMLDOMDocument_createTextNode(doc, data, txtNode);
            if (hr == S_OK)
            {
                IXMLDOMNode *parent;

                hr = IXMLDOMCDATASection_get_parentNode(iface, &parent);
                if (hr == S_OK)
                {
                    IXMLDOMCDATASection_deleteData(iface, 0, offset);
                    hr = IXMLDOMNode_appendChild(parent, (IXMLDOMNode*)*txtNode, NULL);
                }
            }
            SysFreeString(data);
        }
        IXMLDOMDocument_Release(doc);
    }

    return hr;
}

static const struct IXMLDOMCDATASectionVtbl domcdata_vtbl =
{
    domcdata_QueryInterface,
    domcdata_AddRef,
    domcdata_Release,
    domcdata_GetTypeInfoCount,
    domcdata_GetTypeInfo,
    domcdata_GetIDsOfNames,
    domcdata_Invoke,
    domcdata_get_nodeName,
    domcdata_get_nodeValue,
    domcdata_put_nodeValue,
    domcdata_get_nodeType,
    domcdata_get_parentNode,
    domcdata_get_childNodes,
    domcdata_get_firstChild,
    domcdata_get_lastChild,
    domcdata_get_previousSibling,
    domcdata_get_nextSibling,
    domcdata_get_attributes,
    domcdata_insertBefore,
    domcdata_replaceChild,
    domcdata_removeChild,
    domcdata_appendChild,
    domcdata_hasChildNodes,
    domcdata_get_ownerDocument,
    domcdata_cloneNode,
    domcdata_get_nodeTypeString,
    domcdata_get_text,
    domcdata_put_text,
    domcdata_get_specified,
    domcdata_get_definition,
    domcdata_get_nodeTypedValue,
    domcdata_put_nodeTypedValue,
    domcdata_get_dataType,
    domcdata_put_dataType,
    domcdata_get_xml,
    domcdata_transformNode,
    domcdata_selectNodes,
    domcdata_selectSingleNode,
    domcdata_get_parsed,
    domcdata_get_namespaceURI,
    domcdata_get_prefix,
    domcdata_get_baseName,
    domcdata_transformNodeToObject,
    domcdata_get_data,
    domcdata_put_data,
    domcdata_get_length,
    domcdata_substringData,
    domcdata_appendData,
    domcdata_insertData,
    domcdata_deleteData,
    domcdata_replaceData,
    domcdata_splitText
};

IUnknown* create_cdata( xmlNodePtr text )
{
    domcdata *This;

    This = heap_alloc( sizeof *This );
    if ( !This )
        return NULL;

    This->lpVtbl = &domcdata_vtbl;
    This->ref = 1;

    init_xmlnode(&This->node, text, (IXMLDOMNode*)&This->lpVtbl, NULL);

    return (IUnknown*) &This->lpVtbl;
}

#endif