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_IDispatch ) ||
  63          IsEqualGUID( riid, &IID_IUnknown ) )
  64     {
  65         *ppvObject = iface;
  66     }
  67     else if ( IsEqualGUID( riid, &IID_IXMLDOMNode ) )
  68     {
  69         return IUnknown_QueryInterface(This->node_unk, riid, ppvObject);
  70     }
  71     else
  72     {
  73         FIXME("Unsupported interface %s\n", debugstr_guid(riid));
  74         return E_NOINTERFACE;
  75     }
  76
  77     IXMLDOMComment_AddRef( iface );
  78
  79     return S_OK;
  80 }
  81
  82 static ULONG WINAPI domcomment_AddRef(
  83     IXMLDOMComment *iface )
  84 {
  85     domcomment *This = impl_from_IXMLDOMComment( iface );
  86     return InterlockedIncrement( &This->ref );
  87 }
  88
  89 static ULONG WINAPI domcomment_Release(
  90     IXMLDOMComment *iface )
  91 {
  92     domcomment *This = impl_from_IXMLDOMComment( iface );
  93     ULONG ref;
  94
  95     ref = InterlockedDecrement( &This->ref );
  96     if ( ref == 0 )
  97     {
  98         IUnknown_Release( This->node_unk );
  99         HeapFree( GetProcessHeap(), 0, This );
 100     }
 101
 102     return ref;
 103 }
 104
 105 static HRESULT WINAPI domcomment_GetTypeInfoCount(
 106     IXMLDOMComment *iface,
 107     UINT* pctinfo )
 108 {
 109     domcomment *This = impl_from_IXMLDOMComment( iface );
 110
 111     TRACE("(%p)->(%p)\n", This, pctinfo);
 112
 113     *pctinfo = 1;
 114
 115     return S_OK;
 116 }
 117
 118 static HRESULT WINAPI domcomment_GetTypeInfo(
 119     IXMLDOMComment *iface,
 120     UINT iTInfo, LCID lcid,
 121     ITypeInfo** ppTInfo )
 122 {
 123     domcomment *This = impl_from_IXMLDOMComment( iface );
 124     HRESULT hr;
 125
 126     TRACE("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);
 127
 128     hr = get_typeinfo(IXMLDOMComment_tid, ppTInfo);
 129
 130     return hr;
 131 }
 132
 133 static HRESULT WINAPI domcomment_GetIDsOfNames(
 134     IXMLDOMComment *iface,
 135     REFIID riid, LPOLESTR* rgszNames,
 136     UINT cNames, LCID lcid, DISPID* rgDispId )
 137 {
 138     domcomment *This = impl_from_IXMLDOMComment( iface );
 139     ITypeInfo *typeinfo;
 140     HRESULT hr;
 141
 142     TRACE("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames,
 143           lcid, rgDispId);
 144
 145     if(!rgszNames || cNames == 0 || !rgDispId)
 146         return E_INVALIDARG;
 147
 148     hr = get_typeinfo(IXMLDOMComment_tid, &typeinfo);
 149     if(SUCCEEDED(hr))
 150     {
 151         hr = ITypeInfo_GetIDsOfNames(typeinfo, rgszNames, cNames, rgDispId);
 152         ITypeInfo_Release(typeinfo);
 153     }
 154
 155     return hr;
 156 }
 157
 158 static HRESULT WINAPI domcomment_Invoke(
 159     IXMLDOMComment *iface,
 160     DISPID dispIdMember, REFIID riid, LCID lcid,
 161     WORD wFlags, DISPPARAMS* pDispParams, VARIANT* pVarResult,
 162     EXCEPINFO* pExcepInfo, UINT* puArgErr )
 163 {
 164     domcomment *This = impl_from_IXMLDOMComment( iface );
 165     ITypeInfo *typeinfo;
 166     HRESULT hr;
 167
 168     TRACE("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
 169           lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 170
 171     hr = get_typeinfo(IXMLDOMComment_tid, &typeinfo);
 172     if(SUCCEEDED(hr))
 173     {
 174         hr = ITypeInfo_Invoke(typeinfo, &(This->lpVtbl), dispIdMember, wFlags, pDispParams,
 175                 pVarResult, pExcepInfo, puArgErr);
 176         ITypeInfo_Release(typeinfo);
 177     }
 178
 179     return hr;
 180 }
 181
 182 static HRESULT WINAPI domcomment_get_nodeName(
 183     IXMLDOMComment *iface,
 184     BSTR* p )
 185 {
 186     domcomment *This = impl_from_IXMLDOMComment( iface );
 187     return IXMLDOMNode_get_nodeName( This->node, p );
 188 }
 189
 190 static HRESULT WINAPI domcomment_get_nodeValue(
 191     IXMLDOMComment *iface,
 192     VARIANT* var1 )
 193 {
 194     domcomment *This = impl_from_IXMLDOMComment( iface );
 195     return IXMLDOMNode_get_nodeValue( This->node, var1 );
 196 }
 197
 198 static HRESULT WINAPI domcomment_put_nodeValue(
 199     IXMLDOMComment *iface,
 200     VARIANT var1 )
 201 {
 202     domcomment *This = impl_from_IXMLDOMComment( iface );
 203     return IXMLDOMNode_put_nodeValue( This->node, var1 );
 204 }
 205
 206 static HRESULT WINAPI domcomment_get_nodeType(
 207     IXMLDOMComment *iface,
 208     DOMNodeType* domNodeType )
 209 {
 210     domcomment *This = impl_from_IXMLDOMComment( iface );
 211     return IXMLDOMNode_get_nodeType( This->node, domNodeType );
 212 }
 213
 214 static HRESULT WINAPI domcomment_get_parentNode(
 215     IXMLDOMComment *iface,
 216     IXMLDOMNode** parent )
 217 {
 218     domcomment *This = impl_from_IXMLDOMComment( iface );
 219     return IXMLDOMNode_get_parentNode( This->node, parent );
 220 }
 221
 222 static HRESULT WINAPI domcomment_get_childNodes(
 223     IXMLDOMComment *iface,
 224     IXMLDOMNodeList** outList)
 225 {
 226     domcomment *This = impl_from_IXMLDOMComment( iface );
 227     return IXMLDOMNode_get_childNodes( This->node, outList );
 228 }
 229
 230 static HRESULT WINAPI domcomment_get_firstChild(
 231     IXMLDOMComment *iface,
 232     IXMLDOMNode** domNode)
 233 {
 234     domcomment *This = impl_from_IXMLDOMComment( iface );
 235     return IXMLDOMNode_get_firstChild( This->node, domNode );
 236 }
 237
 238 static HRESULT WINAPI domcomment_get_lastChild(
 239     IXMLDOMComment *iface,
 240     IXMLDOMNode** domNode)
 241 {
 242     domcomment *This = impl_from_IXMLDOMComment( iface );
 243     return IXMLDOMNode_get_lastChild( This->node, domNode );
 244 }
 245
 246 static HRESULT WINAPI domcomment_get_previousSibling(
 247     IXMLDOMComment *iface,
 248     IXMLDOMNode** domNode)
 249 {
 250     domcomment *This = impl_from_IXMLDOMComment( iface );
 251     return IXMLDOMNode_get_previousSibling( This->node, domNode );
 252 }
 253
 254 static HRESULT WINAPI domcomment_get_nextSibling(
 255     IXMLDOMComment *iface,
 256     IXMLDOMNode** domNode)
 257 {
 258     domcomment *This = impl_from_IXMLDOMComment( iface );
 259     return IXMLDOMNode_get_nextSibling( This->node, domNode );
 260 }
 261
 262 static HRESULT WINAPI domcomment_get_attributes(
 263     IXMLDOMComment *iface,
 264     IXMLDOMNamedNodeMap** attributeMap)
 265 {
 266     domcomment *This = impl_from_IXMLDOMComment( iface );
 267     return IXMLDOMNode_get_attributes( This->node, attributeMap );
 268 }
 269
 270 static HRESULT WINAPI domcomment_insertBefore(
 271     IXMLDOMComment *iface,
 272     IXMLDOMNode* newNode, VARIANT var1,
 273     IXMLDOMNode** outOldNode)
 274 {
 275     domcomment *This = impl_from_IXMLDOMComment( iface );
 276     return IXMLDOMNode_insertBefore( This->node, newNode, var1, outOldNode );
 277 }
 278
 279 static HRESULT WINAPI domcomment_replaceChild(
 280     IXMLDOMComment *iface,
 281     IXMLDOMNode* newNode,
 282     IXMLDOMNode* oldNode,
 283     IXMLDOMNode** outOldNode)
 284 {
 285     domcomment *This = impl_from_IXMLDOMComment( iface );
 286     return IXMLDOMNode_replaceChild( This->node, newNode, oldNode, outOldNode );
 287 }
 288
 289 static HRESULT WINAPI domcomment_removeChild(
 290     IXMLDOMComment *iface,
 291     IXMLDOMNode* domNode, IXMLDOMNode** oldNode)
 292 {
 293     domcomment *This = impl_from_IXMLDOMComment( iface );
 294     return IXMLDOMNode_removeChild( This->node, domNode, oldNode );
 295 }
 296
 297 static HRESULT WINAPI domcomment_appendChild(
 298     IXMLDOMComment *iface,
 299     IXMLDOMNode* newNode, IXMLDOMNode** outNewNode)
 300 {
 301     domcomment *This = impl_from_IXMLDOMComment( iface );
 302     return IXMLDOMNode_appendChild( This->node, newNode, outNewNode );
 303 }
 304
 305 static HRESULT WINAPI domcomment_hasChildNodes(
 306     IXMLDOMComment *iface,
 307     VARIANT_BOOL* pbool)
 308 {
 309     domcomment *This = impl_from_IXMLDOMComment( iface );
 310     return IXMLDOMNode_hasChildNodes( This->node, pbool );
 311 }
 312
 313 static HRESULT WINAPI domcomment_get_ownerDocument(
 314     IXMLDOMComment *iface,
 315     IXMLDOMDocument** domDocument)
 316 {
 317     domcomment *This = impl_from_IXMLDOMComment( iface );
 318     return IXMLDOMNode_get_ownerDocument( This->node, domDocument );
 319 }
 320
 321 static HRESULT WINAPI domcomment_cloneNode(
 322     IXMLDOMComment *iface,
 323     VARIANT_BOOL pbool, IXMLDOMNode** outNode)
 324 {
 325     domcomment *This = impl_from_IXMLDOMComment( iface );
 326     return IXMLDOMNode_cloneNode( This->node, pbool, outNode );
 327 }
 328
 329 static HRESULT WINAPI domcomment_get_nodeTypeString(
 330     IXMLDOMComment *iface,
 331     BSTR* p)
 332 {
 333     domcomment *This = impl_from_IXMLDOMComment( iface );
 334     return IXMLDOMNode_get_nodeTypeString( This->node, p );
 335 }
 336
 337 static HRESULT WINAPI domcomment_get_text(
 338     IXMLDOMComment *iface,
 339     BSTR* p)
 340 {
 341     domcomment *This = impl_from_IXMLDOMComment( iface );
 342     return IXMLDOMNode_get_text( This->node, p );
 343 }
 344
 345 static HRESULT WINAPI domcomment_put_text(
 346     IXMLDOMComment *iface,
 347     BSTR p)
 348 {
 349     domcomment *This = impl_from_IXMLDOMComment( iface );
 350     return IXMLDOMNode_put_text( This->node, p );
 351 }
 352
 353 static HRESULT WINAPI domcomment_get_specified(
 354     IXMLDOMComment *iface,
 355     VARIANT_BOOL* pbool)
 356 {
 357     domcomment *This = impl_from_IXMLDOMComment( iface );
 358     return IXMLDOMNode_get_specified( This->node, pbool );
 359 }
 360
 361 static HRESULT WINAPI domcomment_get_definition(
 362     IXMLDOMComment *iface,
 363     IXMLDOMNode** domNode)
 364 {
 365     domcomment *This = impl_from_IXMLDOMComment( iface );
 366     return IXMLDOMNode_get_definition( This->node, domNode );
 367 }
 368
 369 static HRESULT WINAPI domcomment_get_nodeTypedValue(
 370     IXMLDOMComment *iface,
 371     VARIANT* var1)
 372 {
 373     domcomment *This = impl_from_IXMLDOMComment( iface );
 374     return IXMLDOMNode_get_nodeTypedValue( This->node, var1 );
 375 }
 376
 377 static HRESULT WINAPI domcomment_put_nodeTypedValue(
 378     IXMLDOMComment *iface,
 379     VARIANT var1)
 380 {
 381     domcomment *This = impl_from_IXMLDOMComment( iface );
 382     return IXMLDOMNode_put_nodeTypedValue( This->node, var1 );
 383 }
 384
 385 static HRESULT WINAPI domcomment_get_dataType(
 386     IXMLDOMComment *iface,
 387     VARIANT* var1)
 388 {
 389     domcomment *This = impl_from_IXMLDOMComment( iface );
 390     return IXMLDOMNode_get_dataType( This->node, var1 );
 391 }
 392
 393 static HRESULT WINAPI domcomment_put_dataType(
 394     IXMLDOMComment *iface,
 395     BSTR p)
 396 {
 397     domcomment *This = impl_from_IXMLDOMComment( iface );
 398     return IXMLDOMNode_put_dataType( This->node, p );
 399 }
 400
 401 static HRESULT WINAPI domcomment_get_xml(
 402     IXMLDOMComment *iface,
 403     BSTR* p)
 404 {
 405     domcomment *This = impl_from_IXMLDOMComment( iface );
 406     return IXMLDOMNode_get_xml( This->node, p );
 407 }
 408
 409 static HRESULT WINAPI domcomment_transformNode(
 410     IXMLDOMComment *iface,
 411     IXMLDOMNode* domNode, BSTR* p)
 412 {
 413     domcomment *This = impl_from_IXMLDOMComment( iface );
 414     return IXMLDOMNode_transformNode( This->node, domNode, p );
 415 }
 416
 417 static HRESULT WINAPI domcomment_selectNodes(
 418     IXMLDOMComment *iface,
 419     BSTR p, IXMLDOMNodeList** outList)
 420 {
 421     domcomment *This = impl_from_IXMLDOMComment( iface );
 422     return IXMLDOMNode_selectNodes( This->node, p, outList );
 423 }
 424
 425 static HRESULT WINAPI domcomment_selectSingleNode(
 426     IXMLDOMComment *iface,
 427     BSTR p, IXMLDOMNode** outNode)
 428 {
 429     domcomment *This = impl_from_IXMLDOMComment( iface );
 430     return IXMLDOMNode_selectSingleNode( This->node, p, outNode );
 431 }
 432
 433 static HRESULT WINAPI domcomment_get_parsed(
 434     IXMLDOMComment *iface,
 435     VARIANT_BOOL* pbool)
 436 {
 437     domcomment *This = impl_from_IXMLDOMComment( iface );
 438     return IXMLDOMNode_get_parsed( This->node, pbool );
 439 }
 440
 441 static HRESULT WINAPI domcomment_get_namespaceURI(
 442     IXMLDOMComment *iface,
 443     BSTR* p)
 444 {
 445     domcomment *This = impl_from_IXMLDOMComment( iface );
 446     return IXMLDOMNode_get_namespaceURI( This->node, p );
 447 }
 448
 449 static HRESULT WINAPI domcomment_get_prefix(
 450     IXMLDOMComment *iface,
 451     BSTR* p)
 452 {
 453     domcomment *This = impl_from_IXMLDOMComment( iface );
 454     return IXMLDOMNode_get_prefix( This->node, p );
 455 }
 456
 457 static HRESULT WINAPI domcomment_get_baseName(
 458     IXMLDOMComment *iface,
 459     BSTR* p)
 460 {
 461     domcomment *This = impl_from_IXMLDOMComment( iface );
 462     return IXMLDOMNode_get_baseName( This->node, p );
 463 }
 464
 465 static HRESULT WINAPI domcomment_transformNodeToObject(
 466     IXMLDOMComment *iface,
 467     IXMLDOMNode* domNode, VARIANT var1)
 468 {
 469     domcomment *This = impl_from_IXMLDOMComment( iface );
 470     return IXMLDOMNode_transformNodeToObject( This->node, domNode, var1 );
 471 }
 472
 473 static HRESULT WINAPI domcomment_get_data(
 474     IXMLDOMComment *iface,
 475     BSTR *p)
 476 {
 477     domcomment *This = impl_from_IXMLDOMComment( iface );
 478     HRESULT hr = E_FAIL;
 479     VARIANT vRet;
 480
 481     if(!p)
 482         return E_INVALIDARG;
 483
 484     hr = IXMLDOMNode_get_nodeValue( This->node, &vRet );
 485     if(hr == S_OK)
 486     {
 487         *p = V_BSTR(&vRet);
 488     }
 489
 490     return hr;
 491 }
 492
 493 static HRESULT WINAPI domcomment_put_data(
 494     IXMLDOMComment *iface,
 495     BSTR data)
 496 {
 497     domcomment *This = impl_from_IXMLDOMComment( iface );
 498     HRESULT hr = E_FAIL;
 499     VARIANT val;
 500
 501     TRACE("%p %s\n", This, debugstr_w(data) );
 502
 503     V_VT(&val) = VT_BSTR;
 504     V_BSTR(&val) = data;
 505
 506     hr = IXMLDOMNode_put_nodeValue( This->node, val );
 507
 508     return hr;
 509 }
 510
 511 static HRESULT WINAPI domcomment_get_length(
 512     IXMLDOMComment *iface,
 513     long *len)
 514 {
 515     domcomment *This = impl_from_IXMLDOMComment( iface );
 516     xmlnode *pDOMNode = impl_from_IXMLDOMNode( This->node );
 517     xmlChar *pContent;
 518     long nLength = 0;
 519
 520     TRACE("%p\n", iface);
 521
 522     if(!len)
 523         return E_INVALIDARG;
 524
 525     pContent = xmlNodeGetContent(pDOMNode->node);
 526     if(pContent)
 527     {
 528         nLength = xmlStrlen(pContent);
 529         xmlFree(pContent);
 530     }
 531
 532     *len = nLength;
 533
 534     return S_OK;
 535 }
 536
 537 static HRESULT WINAPI domcomment_substringData(
 538     IXMLDOMComment *iface,
 539     long offset, long count, BSTR *p)
 540 {
 541     domcomment *This = impl_from_IXMLDOMComment( iface );
 542     xmlnode *pDOMNode = impl_from_IXMLDOMNode( This->node );
 543     xmlChar *pContent;
 544     long nLength = 0;
 545     HRESULT hr = S_FALSE;
 546
 547     TRACE("%p\n", iface);
 548
 549     if(!p)
 550         return E_INVALIDARG;
 551
 552     *p = NULL;
 553     if(offset < 0 || count < 0)
 554         return E_INVALIDARG;
 555
 556     if(count == 0)
 557         return hr;
 558
 559     pContent = xmlNodeGetContent(pDOMNode->node);
 560     if(pContent)
 561     {
 562         nLength = xmlStrlen(pContent);
 563
 564         if( offset < nLength)
 565         {
 566             BSTR sContent = bstr_from_xmlChar(pContent);
 567             if(offset + count > nLength)
 568                 *p = SysAllocString(&sContent[offset]);
 569             else
 570                 *p = SysAllocStringLen(&sContent[offset], count);
 571
 572             SysFreeString(sContent);
 573             hr = S_OK;
 574         }
 575
 576         xmlFree(pContent);
 577     }
 578
 579     return hr;
 580 }
 581
 582 static HRESULT WINAPI domcomment_appendData(
 583     IXMLDOMComment *iface,
 584     BSTR p)
 585 {
 586     domcomment *This = impl_from_IXMLDOMComment( iface );
 587     xmlnode *pDOMNode = impl_from_IXMLDOMNode( This->node );
 588     xmlChar *pContent;
 589     HRESULT hr = S_FALSE;
 590
 591     TRACE("%p\n", iface);
 592
 593     /* Nothing to do if NULL or an Empty string passed in. */
 594     if(p == NULL || SysStringLen(p) == 0)
 595         return S_OK;
 596
 597     pContent = xmlChar_from_wchar( (WCHAR*)p );
 598     if(pContent)
 599     {
 600         /* Older versions of libxml < 2.6.27 didn't correctly support
 601            xmlTextConcat on Comment nodes. Fallback to setting the
 602            contents directly if xmlTextConcat fails.
 603
 604            NOTE: if xmlTextConcat fails, pContent is destroyed.
 605          */
 606         if(xmlTextConcat(pDOMNode->node, pContent, SysStringLen(p) ) == 0)
 607             hr = S_OK;
 608         else
 609         {
 610             xmlChar *pNew;
 611             pContent = xmlChar_from_wchar( (WCHAR*)p );
 612             if(pContent)
 613             {
 614                 pNew = xmlStrcat(xmlNodeGetContent(pDOMNode->node), pContent);
 615                 if(pNew)
 616                 {
 617                     xmlNodeSetContent(pDOMNode->node, pNew);
 618                     hr = S_OK;
 619                 }
 620                 else
 621                     hr = E_FAIL;
 622             }
 623             else
 624                 hr = E_FAIL;
 625         }
 626     }
 627     else
 628         hr = E_FAIL;
 629
 630     return hr;
 631 }
 632
 633 static HRESULT WINAPI domcomment_insertData(
 634     IXMLDOMComment *iface,
 635     long offset, BSTR p)
 636 {
 637     domcomment *This = impl_from_IXMLDOMComment( iface );
 638     xmlnode *pDOMNode = impl_from_IXMLDOMNode( This->node );
 639     xmlChar *pXmlContent;
 640     BSTR sNewString;
 641     HRESULT hr = S_FALSE;
 642     long nLength = 0, nLengthP = 0;
 643     xmlChar *str = NULL;
 644
 645     TRACE("%p\n", This);
 646
 647     /* If have a NULL or empty string, don't do anything. */
 648     if(SysStringLen(p) == 0)
 649         return S_OK;
 650
 651     if(offset < 0)
 652     {
 653         return E_INVALIDARG;
 654     }
 655
 656     pXmlContent = xmlNodeGetContent(pDOMNode->node);
 657     if(pXmlContent)
 658     {
 659         BSTR sContent = bstr_from_xmlChar( pXmlContent );
 660         nLength = SysStringLen(sContent);
 661         nLengthP = SysStringLen(p);
 662
 663         if(nLength < offset)
 664         {
 665             SysFreeString(sContent);
 666             xmlFree(pXmlContent);
 667
 668             return E_INVALIDARG;
 669         }
 670
 671         sNewString = SysAllocStringLen(NULL, nLength + nLengthP + 1);
 672         if(sNewString)
 673         {
 674             if(offset > 0)
 675                 memcpy(sNewString, sContent, offset * sizeof(WCHAR));
 676
 677             memcpy(&sNewString[offset], p, nLengthP * sizeof(WCHAR));
 678
 679             if(offset+nLengthP < nLength)
 680                 memcpy(&sNewString[offset+nLengthP], &sContent[offset], (nLength-offset) * sizeof(WCHAR));
 681
 682             sNewString[nLengthP + nLength] = 0;
 683
 684             str = xmlChar_from_wchar((WCHAR*)sNewString);
 685             if(str)
 686             {
 687                 xmlNodeSetContent(pDOMNode->node, str);
 688                 hr = S_OK;
 689             }
 690
 691             SysFreeString(sNewString);
 692         }
 693
 694         SysFreeString(sContent);
 695
 696         xmlFree(pXmlContent);
 697     }
 698
 699     return hr;
 700 }
 701
 702 static HRESULT WINAPI domcomment_deleteData(
 703     IXMLDOMComment *iface,
 704     long offset, long count)
 705 {
 706     FIXME("\n");
 707     return E_NOTIMPL;
 708 }
 709
 710 static HRESULT WINAPI domcomment_replaceData(
 711     IXMLDOMComment *iface,
 712     long offset, long count, BSTR p)
 713 {
 714     FIXME("\n");
 715     return E_NOTIMPL;
 716 }
 717
 718 static const struct IXMLDOMCommentVtbl domcomment_vtbl =
 719 {
 720     domcomment_QueryInterface,
 721     domcomment_AddRef,
 722     domcomment_Release,
 723     domcomment_GetTypeInfoCount,
 724     domcomment_GetTypeInfo,
 725     domcomment_GetIDsOfNames,
 726     domcomment_Invoke,
 727     domcomment_get_nodeName,
 728     domcomment_get_nodeValue,
 729     domcomment_put_nodeValue,
 730     domcomment_get_nodeType,
 731     domcomment_get_parentNode,
 732     domcomment_get_childNodes,
 733     domcomment_get_firstChild,
 734     domcomment_get_lastChild,
 735     domcomment_get_previousSibling,
 736     domcomment_get_nextSibling,
 737     domcomment_get_attributes,
 738     domcomment_insertBefore,
 739     domcomment_replaceChild,
 740     domcomment_removeChild,
 741     domcomment_appendChild,
 742     domcomment_hasChildNodes,
 743     domcomment_get_ownerDocument,
 744     domcomment_cloneNode,
 745     domcomment_get_nodeTypeString,
 746     domcomment_get_text,
 747     domcomment_put_text,
 748     domcomment_get_specified,
 749     domcomment_get_definition,
 750     domcomment_get_nodeTypedValue,
 751     domcomment_put_nodeTypedValue,
 752     domcomment_get_dataType,
 753     domcomment_put_dataType,
 754     domcomment_get_xml,
 755     domcomment_transformNode,
 756     domcomment_selectNodes,
 757     domcomment_selectSingleNode,
 758     domcomment_get_parsed,
 759     domcomment_get_namespaceURI,
 760     domcomment_get_prefix,
 761     domcomment_get_baseName,
 762     domcomment_transformNodeToObject,
 763     domcomment_get_data,
 764     domcomment_put_data,
 765     domcomment_get_length,
 766     domcomment_substringData,
 767     domcomment_appendData,
 768     domcomment_insertData,
 769     domcomment_deleteData,
 770     domcomment_replaceData
 771 };
 772
 773 IUnknown* create_comment( xmlNodePtr comment )
 774 {
 775     domcomment *This;
 776     HRESULT hr;
 777
 778     This = HeapAlloc( GetProcessHeap(), 0, sizeof *This );
 779     if ( !This )
 780         return NULL;
 781
 782     This->lpVtbl = &domcomment_vtbl;
 783     This->ref = 1;
 784
 785     This->node_unk = create_basic_node( comment, (IUnknown*)&This->lpVtbl );
 786     if(!This->node_unk)
 787     {
 788         HeapFree(GetProcessHeap(), 0, This);
 789         return NULL;
 790     }
 791
 792     hr = IUnknown_QueryInterface(This->node_unk, &IID_IXMLDOMNode, (LPVOID*)&This->node);
 793     if(FAILED(hr))
 794     {
 795         IUnknown_Release(This->node_unk);
 796         HeapFree( GetProcessHeap(), 0, This );
 797         return NULL;
 798     }
 799     /* The ref on This->node is actually looped back into this object, so release it */
 800     IXMLDOMNode_Release(This->node);
 801
 802     return (IUnknown*) &This->lpVtbl;
 803 }
 804
 805 #endif