dlls/msxml3/comment.c

   1 /*
   2  *    DOM comment node implementation
   3  *
   4  * Copyright 2006 Huw Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define COBJMACROS
  22
  23 #include "config.h"
  24
  25 #include <stdarg.h>
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winuser.h"
  29 #include "ole2.h"
  30 #include "msxml2.h"
  31
  32 #include "msxml_private.h"
  33
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(msxml);
  37
  38 #ifdef HAVE_LIBXML2
  39
  40 typedef struct _domcomment
  41 {
  42     const struct IXMLDOMCommentVtbl *lpVtbl;
  43     LONG ref;
  44     IUnknown *node_unk;
  45     IXMLDOMNode *node;
  46 } domcomment;
  47
  48 static inline domcomment *impl_from_IXMLDOMComment( IXMLDOMComment *iface )
  49 {
  50     return (domcomment *)((char*)iface - FIELD_OFFSET(domcomment, lpVtbl));
  51 }
  52
  53 static HRESULT WINAPI domcomment_QueryInterface(
  54     IXMLDOMComment *iface,
  55     REFIID riid,
  56     void** ppvObject )
  57 {
  58     domcomment *This = impl_from_IXMLDOMComment( iface );
  59     TRACE("%p %s %p\n", This, debugstr_guid(riid), ppvObject);
  60
  61     if ( IsEqualGUID( riid, &IID_IXMLDOMComment ) ||
  62          IsEqualGUID( riid, &IID_IXMLDOMCharacterData) ||
  63          IsEqualGUID( riid, &IID_IDispatch ) ||
  64          IsEqualGUID( riid, &IID_IUnknown ) )
  65     {
  66         *ppvObject = iface;
  67     }
  68     else if ( IsEqualGUID( riid, &IID_IXMLDOMNode ) )
  69     {
  70         return IUnknown_QueryInterface(This->node_unk, riid, ppvObject);
  71     }
  72     else
  73     {
  74         FIXME("Unsupported interface %s\n", debugstr_guid(riid));
  75         return E_NOINTERFACE;
  76     }
  77
  78     IXMLDOMComment_AddRef( iface );
  79
  80     return S_OK;
  81 }
  82
  83 static ULONG WINAPI domcomment_AddRef(
  84     IXMLDOMComment *iface )
  85 {
  86     domcomment *This = impl_from_IXMLDOMComment( iface );
  87     return InterlockedIncrement( &This->ref );
  88 }
  89
  90 static ULONG WINAPI domcomment_Release(
  91     IXMLDOMComment *iface )
  92 {
  93     domcomment *This = impl_from_IXMLDOMComment( iface );
  94     ULONG ref;
  95
  96     ref = InterlockedDecrement( &This->ref );
  97     if ( ref == 0 )
  98     {
  99         IUnknown_Release( This->node_unk );
 100         HeapFree( GetProcessHeap(), 0, This );
 101     }
 102
 103     return ref;
 104 }
 105
 106 static HRESULT WINAPI domcomment_GetTypeInfoCount(
 107     IXMLDOMComment *iface,
 108     UINT* pctinfo )
 109 {
 110     domcomment *This = impl_from_IXMLDOMComment( iface );
 111
 112     TRACE("(%p)->(%p)\n", This, pctinfo);
 113
 114     *pctinfo = 1;
 115
 116     return S_OK;
 117 }
 118
 119 static HRESULT WINAPI domcomment_GetTypeInfo(
 120     IXMLDOMComment *iface,
 121     UINT iTInfo, LCID lcid,
 122     ITypeInfo** ppTInfo )
 123 {
 124     domcomment *This = impl_from_IXMLDOMComment( iface );
 125     HRESULT hr;
 126
 127     TRACE("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);
 128
 129     hr = get_typeinfo(IXMLDOMComment_tid, ppTInfo);
 130
 131     return hr;
 132 }
 133
 134 static HRESULT WINAPI domcomment_GetIDsOfNames(
 135     IXMLDOMComment *iface,
 136     REFIID riid, LPOLESTR* rgszNames,
 137     UINT cNames, LCID lcid, DISPID* rgDispId )
 138 {
 139     domcomment *This = impl_from_IXMLDOMComment( iface );
 140     ITypeInfo *typeinfo;
 141     HRESULT hr;
 142
 143     TRACE("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames,
 144           lcid, rgDispId);
 145
 146     if(!rgszNames || cNames == 0 || !rgDispId)
 147         return E_INVALIDARG;
 148
 149     hr = get_typeinfo(IXMLDOMComment_tid, &typeinfo);
 150     if(SUCCEEDED(hr))
 151     {
 152         hr = ITypeInfo_GetIDsOfNames(typeinfo, rgszNames, cNames, rgDispId);
 153         ITypeInfo_Release(typeinfo);
 154     }
 155
 156     return hr;
 157 }
 158
 159 static HRESULT WINAPI domcomment_Invoke(
 160     IXMLDOMComment *iface,
 161     DISPID dispIdMember, REFIID riid, LCID lcid,
 162     WORD wFlags, DISPPARAMS* pDispParams, VARIANT* pVarResult,
 163     EXCEPINFO* pExcepInfo, UINT* puArgErr )
 164 {
 165     domcomment *This = impl_from_IXMLDOMComment( iface );
 166     ITypeInfo *typeinfo;
 167     HRESULT hr;
 168
 169     TRACE("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
 170           lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 171
 172     hr = get_typeinfo(IXMLDOMComment_tid, &typeinfo);
 173     if(SUCCEEDED(hr))
 174     {
 175         hr = ITypeInfo_Invoke(typeinfo, &(This->lpVtbl), dispIdMember, wFlags, pDispParams,
 176                 pVarResult, pExcepInfo, puArgErr);
 177         ITypeInfo_Release(typeinfo);
 178     }
 179
 180     return hr;
 181 }
 182
 183 static HRESULT WINAPI domcomment_get_nodeName(
 184     IXMLDOMComment *iface,
 185     BSTR* p )
 186 {
 187     domcomment *This = impl_from_IXMLDOMComment( iface );
 188     return IXMLDOMNode_get_nodeName( This->node, p );
 189 }
 190
 191 static HRESULT WINAPI domcomment_get_nodeValue(
 192     IXMLDOMComment *iface,
 193     VARIANT* var1 )
 194 {
 195     domcomment *This = impl_from_IXMLDOMComment( iface );
 196     return IXMLDOMNode_get_nodeValue( This->node, var1 );
 197 }
 198
 199 static HRESULT WINAPI domcomment_put_nodeValue(
 200     IXMLDOMComment *iface,
 201     VARIANT var1 )
 202 {
 203     domcomment *This = impl_from_IXMLDOMComment( iface );
 204     return IXMLDOMNode_put_nodeValue( This->node, var1 );
 205 }
 206
 207 static HRESULT WINAPI domcomment_get_nodeType(
 208     IXMLDOMComment *iface,
 209     DOMNodeType* domNodeType )
 210 {
 211     domcomment *This = impl_from_IXMLDOMComment( iface );
 212     return IXMLDOMNode_get_nodeType( This->node, domNodeType );
 213 }
 214
 215 static HRESULT WINAPI domcomment_get_parentNode(
 216     IXMLDOMComment *iface,
 217     IXMLDOMNode** parent )
 218 {
 219     domcomment *This = impl_from_IXMLDOMComment( iface );
 220     return IXMLDOMNode_get_parentNode( This->node, parent );
 221 }
 222
 223 static HRESULT WINAPI domcomment_get_childNodes(
 224     IXMLDOMComment *iface,
 225     IXMLDOMNodeList** outList)
 226 {
 227     domcomment *This = impl_from_IXMLDOMComment( iface );
 228     return IXMLDOMNode_get_childNodes( This->node, outList );
 229 }
 230
 231 static HRESULT WINAPI domcomment_get_firstChild(
 232     IXMLDOMComment *iface,
 233     IXMLDOMNode** domNode)
 234 {
 235     domcomment *This = impl_from_IXMLDOMComment( iface );
 236     return IXMLDOMNode_get_firstChild( This->node, domNode );
 237 }
 238
 239 static HRESULT WINAPI domcomment_get_lastChild(
 240     IXMLDOMComment *iface,
 241     IXMLDOMNode** domNode)
 242 {
 243     domcomment *This = impl_from_IXMLDOMComment( iface );
 244     return IXMLDOMNode_get_lastChild( This->node, domNode );
 245 }
 246
 247 static HRESULT WINAPI domcomment_get_previousSibling(
 248     IXMLDOMComment *iface,
 249     IXMLDOMNode** domNode)
 250 {
 251     domcomment *This = impl_from_IXMLDOMComment( iface );
 252     return IXMLDOMNode_get_previousSibling( This->node, domNode );
 253 }
 254
 255 static HRESULT WINAPI domcomment_get_nextSibling(
 256     IXMLDOMComment *iface,
 257     IXMLDOMNode** domNode)
 258 {
 259     domcomment *This = impl_from_IXMLDOMComment( iface );
 260     return IXMLDOMNode_get_nextSibling( This->node, domNode );
 261 }
 262
 263 static HRESULT WINAPI domcomment_get_attributes(
 264     IXMLDOMComment *iface,
 265     IXMLDOMNamedNodeMap** attributeMap)
 266 {
 267     domcomment *This = impl_from_IXMLDOMComment( iface );
 268     return IXMLDOMNode_get_attributes( This->node, attributeMap );
 269 }
 270
 271 static HRESULT WINAPI domcomment_insertBefore(
 272     IXMLDOMComment *iface,
 273     IXMLDOMNode* newNode, VARIANT var1,
 274     IXMLDOMNode** outOldNode)
 275 {
 276     domcomment *This = impl_from_IXMLDOMComment( iface );
 277     return IXMLDOMNode_insertBefore( This->node, newNode, var1, outOldNode );
 278 }
 279
 280 static HRESULT WINAPI domcomment_replaceChild(
 281     IXMLDOMComment *iface,
 282     IXMLDOMNode* newNode,
 283     IXMLDOMNode* oldNode,
 284     IXMLDOMNode** outOldNode)
 285 {
 286     domcomment *This = impl_from_IXMLDOMComment( iface );
 287     return IXMLDOMNode_replaceChild( This->node, newNode, oldNode, outOldNode );
 288 }
 289
 290 static HRESULT WINAPI domcomment_removeChild(
 291     IXMLDOMComment *iface,
 292     IXMLDOMNode* domNode, IXMLDOMNode** oldNode)
 293 {
 294     domcomment *This = impl_from_IXMLDOMComment( iface );
 295     return IXMLDOMNode_removeChild( This->node, domNode, oldNode );
 296 }
 297
 298 static HRESULT WINAPI domcomment_appendChild(
 299     IXMLDOMComment *iface,
 300     IXMLDOMNode* newNode, IXMLDOMNode** outNewNode)
 301 {
 302     domcomment *This = impl_from_IXMLDOMComment( iface );
 303     return IXMLDOMNode_appendChild( This->node, newNode, outNewNode );
 304 }
 305
 306 static HRESULT WINAPI domcomment_hasChildNodes(
 307     IXMLDOMComment *iface,
 308     VARIANT_BOOL* pbool)
 309 {
 310     domcomment *This = impl_from_IXMLDOMComment( iface );
 311     return IXMLDOMNode_hasChildNodes( This->node, pbool );
 312 }
 313
 314 static HRESULT WINAPI domcomment_get_ownerDocument(
 315     IXMLDOMComment *iface,
 316     IXMLDOMDocument** domDocument)
 317 {
 318     domcomment *This = impl_from_IXMLDOMComment( iface );
 319     return IXMLDOMNode_get_ownerDocument( This->node, domDocument );
 320 }
 321
 322 static HRESULT WINAPI domcomment_cloneNode(
 323     IXMLDOMComment *iface,
 324     VARIANT_BOOL pbool, IXMLDOMNode** outNode)
 325 {
 326     domcomment *This = impl_from_IXMLDOMComment( iface );
 327     return IXMLDOMNode_cloneNode( This->node, pbool, outNode );
 328 }
 329
 330 static HRESULT WINAPI domcomment_get_nodeTypeString(
 331     IXMLDOMComment *iface,
 332     BSTR* p)
 333 {
 334     domcomment *This = impl_from_IXMLDOMComment( iface );
 335     return IXMLDOMNode_get_nodeTypeString( This->node, p );
 336 }
 337
 338 static HRESULT WINAPI domcomment_get_text(
 339     IXMLDOMComment *iface,
 340     BSTR* p)
 341 {
 342     domcomment *This = impl_from_IXMLDOMComment( iface );
 343     return IXMLDOMNode_get_text( This->node, p );
 344 }
 345
 346 static HRESULT WINAPI domcomment_put_text(
 347     IXMLDOMComment *iface,
 348     BSTR p)
 349 {
 350     domcomment *This = impl_from_IXMLDOMComment( iface );
 351     return IXMLDOMNode_put_text( This->node, p );
 352 }
 353
 354 static HRESULT WINAPI domcomment_get_specified(
 355     IXMLDOMComment *iface,
 356     VARIANT_BOOL* pbool)
 357 {
 358     domcomment *This = impl_from_IXMLDOMComment( iface );
 359     return IXMLDOMNode_get_specified( This->node, pbool );
 360 }
 361
 362 static HRESULT WINAPI domcomment_get_definition(
 363     IXMLDOMComment *iface,
 364     IXMLDOMNode** domNode)
 365 {
 366     domcomment *This = impl_from_IXMLDOMComment( iface );
 367     return IXMLDOMNode_get_definition( This->node, domNode );
 368 }
 369
 370 static HRESULT WINAPI domcomment_get_nodeTypedValue(
 371     IXMLDOMComment *iface,
 372     VARIANT* var1)
 373 {
 374     domcomment *This = impl_from_IXMLDOMComment( iface );
 375     return IXMLDOMNode_get_nodeTypedValue( This->node, var1 );
 376 }
 377
 378 static HRESULT WINAPI domcomment_put_nodeTypedValue(
 379     IXMLDOMComment *iface,
 380     VARIANT var1)
 381 {
 382     domcomment *This = impl_from_IXMLDOMComment( iface );
 383     return IXMLDOMNode_put_nodeTypedValue( This->node, var1 );
 384 }
 385
 386 static HRESULT WINAPI domcomment_get_dataType(
 387     IXMLDOMComment *iface,
 388     VARIANT* var1)
 389 {
 390     domcomment *This = impl_from_IXMLDOMComment( iface );
 391     return IXMLDOMNode_get_dataType( This->node, var1 );
 392 }
 393
 394 static HRESULT WINAPI domcomment_put_dataType(
 395     IXMLDOMComment *iface,
 396     BSTR p)
 397 {
 398     domcomment *This = impl_from_IXMLDOMComment( iface );
 399     return IXMLDOMNode_put_dataType( This->node, p );
 400 }
 401
 402 static HRESULT WINAPI domcomment_get_xml(
 403     IXMLDOMComment *iface,
 404     BSTR* p)
 405 {
 406     domcomment *This = impl_from_IXMLDOMComment( iface );
 407     return IXMLDOMNode_get_xml( This->node, p );
 408 }
 409
 410 static HRESULT WINAPI domcomment_transformNode(
 411     IXMLDOMComment *iface,
 412     IXMLDOMNode* domNode, BSTR* p)
 413 {
 414     domcomment *This = impl_from_IXMLDOMComment( iface );
 415     return IXMLDOMNode_transformNode( This->node, domNode, p );
 416 }
 417
 418 static HRESULT WINAPI domcomment_selectNodes(
 419     IXMLDOMComment *iface,
 420     BSTR p, IXMLDOMNodeList** outList)
 421 {
 422     domcomment *This = impl_from_IXMLDOMComment( iface );
 423     return IXMLDOMNode_selectNodes( This->node, p, outList );
 424 }
 425
 426 static HRESULT WINAPI domcomment_selectSingleNode(
 427     IXMLDOMComment *iface,
 428     BSTR p, IXMLDOMNode** outNode)
 429 {
 430     domcomment *This = impl_from_IXMLDOMComment( iface );
 431     return IXMLDOMNode_selectSingleNode( This->node, p, outNode );
 432 }
 433
 434 static HRESULT WINAPI domcomment_get_parsed(
 435     IXMLDOMComment *iface,
 436     VARIANT_BOOL* pbool)
 437 {
 438     domcomment *This = impl_from_IXMLDOMComment( iface );
 439     return IXMLDOMNode_get_parsed( This->node, pbool );
 440 }
 441
 442 static HRESULT WINAPI domcomment_get_namespaceURI(
 443     IXMLDOMComment *iface,
 444     BSTR* p)
 445 {
 446     domcomment *This = impl_from_IXMLDOMComment( iface );
 447     return IXMLDOMNode_get_namespaceURI( This->node, p );
 448 }
 449
 450 static HRESULT WINAPI domcomment_get_prefix(
 451     IXMLDOMComment *iface,
 452     BSTR* p)
 453 {
 454     domcomment *This = impl_from_IXMLDOMComment( iface );
 455     return IXMLDOMNode_get_prefix( This->node, p );
 456 }
 457
 458 static HRESULT WINAPI domcomment_get_baseName(
 459     IXMLDOMComment *iface,
 460     BSTR* p)
 461 {
 462     domcomment *This = impl_from_IXMLDOMComment( iface );
 463     return IXMLDOMNode_get_baseName( This->node, p );
 464 }
 465
 466 static HRESULT WINAPI domcomment_transformNodeToObject(
 467     IXMLDOMComment *iface,
 468     IXMLDOMNode* domNode, VARIANT var1)
 469 {
 470     domcomment *This = impl_from_IXMLDOMComment( iface );
 471     return IXMLDOMNode_transformNodeToObject( This->node, domNode, var1 );
 472 }
 473
 474 static HRESULT WINAPI domcomment_get_data(
 475     IXMLDOMComment *iface,
 476     BSTR *p)
 477 {
 478     domcomment *This = impl_from_IXMLDOMComment( iface );
 479     HRESULT hr = E_FAIL;
 480     VARIANT vRet;
 481
 482     if(!p)
 483         return E_INVALIDARG;
 484
 485     hr = IXMLDOMNode_get_nodeValue( This->node, &vRet );
 486     if(hr == S_OK)
 487     {
 488         *p = V_BSTR(&vRet);
 489     }
 490
 491     return hr;
 492 }
 493
 494 static HRESULT WINAPI domcomment_put_data(
 495     IXMLDOMComment *iface,
 496     BSTR data)
 497 {
 498     domcomment *This = impl_from_IXMLDOMComment( iface );
 499     HRESULT hr = E_FAIL;
 500     VARIANT val;
 501
 502     TRACE("%p %s\n", This, debugstr_w(data) );
 503
 504     V_VT(&val) = VT_BSTR;
 505     V_BSTR(&val) = data;
 506
 507     hr = IXMLDOMNode_put_nodeValue( This->node, val );
 508
 509     return hr;
 510 }
 511
 512 static HRESULT WINAPI domcomment_get_length(
 513     IXMLDOMComment *iface,
 514     long *len)
 515 {
 516     domcomment *This = impl_from_IXMLDOMComment( iface );
 517     xmlnode *pDOMNode = impl_from_IXMLDOMNode( This->node );
 518     xmlChar *pContent;
 519     long nLength = 0;
 520
 521     TRACE("%p\n", iface);
 522
 523     if(!len)
 524         return E_INVALIDARG;
 525
 526     pContent = xmlNodeGetContent(pDOMNode->node);
 527     if(pContent)
 528     {
 529         nLength = xmlStrlen(pContent);
 530         xmlFree(pContent);
 531     }
 532
 533     *len = nLength;
 534
 535     return S_OK;
 536 }
 537
 538 static HRESULT WINAPI domcomment_substringData(
 539     IXMLDOMComment *iface,
 540     long offset, long count, BSTR *p)
 541 {
 542     domcomment *This = impl_from_IXMLDOMComment( iface );
 543     xmlnode *pDOMNode = impl_from_IXMLDOMNode( This->node );
 544     xmlChar *pContent;
 545     long nLength = 0;
 546     HRESULT hr = S_FALSE;
 547
 548     TRACE("%p\n", iface);
 549
 550     if(!p)
 551         return E_INVALIDARG;
 552
 553     *p = NULL;
 554     if(offset < 0 || count < 0)
 555         return E_INVALIDARG;
 556
 557     if(count == 0)
 558         return hr;
 559
 560     pContent = xmlNodeGetContent(pDOMNode->node);
 561     if(pContent)
 562     {
 563         nLength = xmlStrlen(pContent);
 564
 565         if( offset < nLength)
 566         {
 567             BSTR sContent = bstr_from_xmlChar(pContent);
 568             if(offset + count > nLength)
 569                 *p = SysAllocString(&sContent[offset]);
 570             else
 571                 *p = SysAllocStringLen(&sContent[offset], count);
 572
 573             SysFreeString(sContent);
 574             hr = S_OK;
 575         }
 576
 577         xmlFree(pContent);
 578     }
 579
 580     return hr;
 581 }
 582
 583 static HRESULT WINAPI domcomment_appendData(
 584     IXMLDOMComment *iface,
 585     BSTR p)
 586 {
 587     domcomment *This = impl_from_IXMLDOMComment( iface );
 588     xmlnode *pDOMNode = impl_from_IXMLDOMNode( This->node );
 589     xmlChar *pContent;
 590     HRESULT hr = S_FALSE;
 591
 592     TRACE("%p\n", iface);
 593
 594     /* Nothing to do if NULL or an Empty string passed in. */
 595     if(p == NULL || SysStringLen(p) == 0)
 596         return S_OK;
 597
 598     pContent = xmlChar_from_wchar( (WCHAR*)p );
 599     if(pContent)
 600     {
 601         /* Older versions of libxml < 2.6.27 didn't correctly support
 602            xmlTextConcat on Comment nodes. Fallback to setting the
 603            contents directly if xmlTextConcat fails.
 604          */
 605         if(xmlTextConcat(pDOMNode->node, pContent, SysStringLen(p) ) == 0)
 606             hr = S_OK;
 607         else
 608         {
 609             xmlChar *pNew;
 610             pNew = xmlStrcat(xmlNodeGetContent(pDOMNode->node), pContent);
 611             if(pNew)
 612             {
 613                 xmlNodeSetContent(pDOMNode->node, pNew);
 614                 hr = S_OK;
 615             }
 616             else
 617                 hr = E_FAIL;
 618         }
 619         HeapFree( GetProcessHeap(), 0, pContent );
 620     }
 621     else
 622         hr = E_FAIL;
 623
 624     return hr;
 625 }
 626
 627 static HRESULT WINAPI domcomment_insertData(
 628     IXMLDOMComment *iface,
 629     long offset, BSTR p)
 630 {
 631     domcomment *This = impl_from_IXMLDOMComment( iface );
 632     xmlnode *pDOMNode = impl_from_IXMLDOMNode( This->node );
 633     xmlChar *pXmlContent;
 634     BSTR sNewString;
 635     HRESULT hr = S_FALSE;
 636     long nLength = 0, nLengthP = 0;
 637     xmlChar *str = NULL;
 638
 639     TRACE("%p\n", This);
 640
 641     /* If have a NULL or empty string, don't do anything. */
 642     if(SysStringLen(p) == 0)
 643         return S_OK;
 644
 645     if(offset < 0)
 646     {
 647         return E_INVALIDARG;
 648     }
 649
 650     pXmlContent = xmlNodeGetContent(pDOMNode->node);
 651     if(pXmlContent)
 652     {
 653         BSTR sContent = bstr_from_xmlChar( pXmlContent );
 654         nLength = SysStringLen(sContent);
 655         nLengthP = SysStringLen(p);
 656
 657         if(nLength < offset)
 658         {
 659             SysFreeString(sContent);
 660             xmlFree(pXmlContent);
 661
 662             return E_INVALIDARG;
 663         }
 664
 665         sNewString = SysAllocStringLen(NULL, nLength + nLengthP + 1);
 666         if(sNewString)
 667         {
 668             if(offset > 0)
 669                 memcpy(sNewString, sContent, offset * sizeof(WCHAR));
 670
 671             memcpy(&sNewString[offset], p, nLengthP * sizeof(WCHAR));
 672
 673             if(offset+nLengthP < nLength)
 674                 memcpy(&sNewString[offset+nLengthP], &sContent[offset], (nLength-offset) * sizeof(WCHAR));
 675
 676             sNewString[nLengthP + nLength] = 0;
 677
 678             str = xmlChar_from_wchar((WCHAR*)sNewString);
 679             if(str)
 680             {
 681                 xmlNodeSetContent(pDOMNode->node, str);
 682                 hr = S_OK;
 683             }
 684             HeapFree( GetProcessHeap(), 0, str );
 685
 686             SysFreeString(sNewString);
 687         }
 688
 689         SysFreeString(sContent);
 690
 691         xmlFree(pXmlContent);
 692     }
 693
 694     return hr;
 695 }
 696
 697 static HRESULT WINAPI domcomment_deleteData(
 698     IXMLDOMComment *iface,
 699     long offset, long count)
 700 {
 701     FIXME("\n");
 702     return E_NOTIMPL;
 703 }
 704
 705 static HRESULT WINAPI domcomment_replaceData(
 706     IXMLDOMComment *iface,
 707     long offset, long count, BSTR p)
 708 {
 709     FIXME("\n");
 710     return E_NOTIMPL;
 711 }
 712
 713 static const struct IXMLDOMCommentVtbl domcomment_vtbl =
 714 {
 715     domcomment_QueryInterface,
 716     domcomment_AddRef,
 717     domcomment_Release,
 718     domcomment_GetTypeInfoCount,
 719     domcomment_GetTypeInfo,
 720     domcomment_GetIDsOfNames,
 721     domcomment_Invoke,
 722     domcomment_get_nodeName,
 723     domcomment_get_nodeValue,
 724     domcomment_put_nodeValue,
 725     domcomment_get_nodeType,
 726     domcomment_get_parentNode,
 727     domcomment_get_childNodes,
 728     domcomment_get_firstChild,
 729     domcomment_get_lastChild,
 730     domcomment_get_previousSibling,
 731     domcomment_get_nextSibling,
 732     domcomment_get_attributes,
 733     domcomment_insertBefore,
 734     domcomment_replaceChild,
 735     domcomment_removeChild,
 736     domcomment_appendChild,
 737     domcomment_hasChildNodes,
 738     domcomment_get_ownerDocument,
 739     domcomment_cloneNode,
 740     domcomment_get_nodeTypeString,
 741     domcomment_get_text,
 742     domcomment_put_text,
 743     domcomment_get_specified,
 744     domcomment_get_definition,
 745     domcomment_get_nodeTypedValue,
 746     domcomment_put_nodeTypedValue,
 747     domcomment_get_dataType,
 748     domcomment_put_dataType,
 749     domcomment_get_xml,
 750     domcomment_transformNode,
 751     domcomment_selectNodes,
 752     domcomment_selectSingleNode,
 753     domcomment_get_parsed,
 754     domcomment_get_namespaceURI,
 755     domcomment_get_prefix,
 756     domcomment_get_baseName,
 757     domcomment_transformNodeToObject,
 758     domcomment_get_data,
 759     domcomment_put_data,
 760     domcomment_get_length,
 761     domcomment_substringData,
 762     domcomment_appendData,
 763     domcomment_insertData,
 764     domcomment_deleteData,
 765     domcomment_replaceData
 766 };
 767
 768 IUnknown* create_comment( xmlNodePtr comment )
 769 {
 770     domcomment *This;
 771     HRESULT hr;
 772
 773     This = HeapAlloc( GetProcessHeap(), 0, sizeof *This );
 774     if ( !This )
 775         return NULL;
 776
 777     This->lpVtbl = &domcomment_vtbl;
 778     This->ref = 1;
 779
 780     This->node_unk = create_basic_node( comment, (IUnknown*)&This->lpVtbl );
 781     if(!This->node_unk)
 782     {
 783         HeapFree(GetProcessHeap(), 0, This);
 784         return NULL;
 785     }
 786
 787     hr = IUnknown_QueryInterface(This->node_unk, &IID_IXMLDOMNode, (LPVOID*)&This->node);
 788     if(FAILED(hr))
 789     {
 790         IUnknown_Release(This->node_unk);
 791         HeapFree( GetProcessHeap(), 0, This );
 792         return NULL;
 793     }
 794     /* The ref on This->node is actually looped back into this object, so release it */
 795     IXMLDOMNode_Release(This->node);
 796
 797     return (IUnknown*) &This->lpVtbl;
 798 }
 799
 800 #endif