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 "msxml6.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     xmlnode node;
  43     const struct IXMLDOMCommentVtbl *lpVtbl;
  44     LONG ref;
  45 } domcomment;
  46
  47 static inline domcomment *impl_from_IXMLDOMComment( IXMLDOMComment *iface )
  48 {
  49     return (domcomment *)((char*)iface - FIELD_OFFSET(domcomment, lpVtbl));
  50 }
  51
  52 static HRESULT WINAPI domcomment_QueryInterface(
  53     IXMLDOMComment *iface,
  54     REFIID riid,
  55     void** ppvObject )
  56 {
  57     domcomment *This = impl_from_IXMLDOMComment( iface );
  58     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppvObject);
  59
  60     if ( IsEqualGUID( riid, &IID_IXMLDOMComment ) ||
  61          IsEqualGUID( riid, &IID_IXMLDOMCharacterData) ||
  62          IsEqualGUID( riid, &IID_IXMLDOMNode ) ||
  63          IsEqualGUID( riid, &IID_IDispatch ) ||
  64          IsEqualGUID( riid, &IID_IUnknown ) )
  65     {
  66         *ppvObject = iface;
  67     }
  68     else if(node_query_interface(&This->node, riid, ppvObject))
  69     {
  70         return *ppvObject ? S_OK : E_NOINTERFACE;
  71     }
  72     else
  73     {
  74         FIXME("Unsupported interface %s\n", debugstr_guid(riid));
  75         return E_NOINTERFACE;
  76     }
  77
  78     IXMLDOMText_AddRef((IUnknown*)*ppvObject);
  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         destroy_xmlnode(&This->node);
  99         heap_free( 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
 188     static const WCHAR commentW[] = {'#','c','o','m','m','e','n','t',0};
 189
 190     TRACE("(%p)->(%p)\n", This, p);
 191
 192     return return_bstr(commentW, p);
 193 }
 194
 195 static HRESULT WINAPI domcomment_get_nodeValue(
 196     IXMLDOMComment *iface,
 197     VARIANT* value)
 198 {
 199     domcomment *This = impl_from_IXMLDOMComment( iface );
 200
 201     TRACE("(%p)->(%p)\n", This, value);
 202
 203     return node_get_content(&This->node, value);
 204 }
 205
 206 static HRESULT WINAPI domcomment_put_nodeValue(
 207     IXMLDOMComment *iface,
 208     VARIANT value)
 209 {
 210     domcomment *This = impl_from_IXMLDOMComment( iface );
 211
 212     TRACE("(%p)->(v%d)\n", This, V_VT(&value));
 213
 214     return node_put_value(&This->node, &value);
 215 }
 216
 217 static HRESULT WINAPI domcomment_get_nodeType(
 218     IXMLDOMComment *iface,
 219     DOMNodeType* domNodeType )
 220 {
 221     domcomment *This = impl_from_IXMLDOMComment( iface );
 222
 223     TRACE("(%p)->(%p)\n", This, domNodeType);
 224
 225     *domNodeType = NODE_COMMENT;
 226     return S_OK;
 227 }
 228
 229 static HRESULT WINAPI domcomment_get_parentNode(
 230     IXMLDOMComment *iface,
 231     IXMLDOMNode** parent )
 232 {
 233     domcomment *This = impl_from_IXMLDOMComment( iface );
 234
 235     TRACE("(%p)->(%p)\n", This, parent);
 236
 237     return node_get_parent(&This->node, parent);
 238 }
 239
 240 static HRESULT WINAPI domcomment_get_childNodes(
 241     IXMLDOMComment *iface,
 242     IXMLDOMNodeList** outList)
 243 {
 244     domcomment *This = impl_from_IXMLDOMComment( iface );
 245
 246     TRACE("(%p)->(%p)\n", This, outList);
 247
 248     return node_get_child_nodes(&This->node, outList);
 249 }
 250
 251 static HRESULT WINAPI domcomment_get_firstChild(
 252     IXMLDOMComment *iface,
 253     IXMLDOMNode** domNode)
 254 {
 255     domcomment *This = impl_from_IXMLDOMComment( iface );
 256
 257     TRACE("(%p)->(%p)\n", This, domNode);
 258
 259     return return_null_node(domNode);
 260 }
 261
 262 static HRESULT WINAPI domcomment_get_lastChild(
 263     IXMLDOMComment *iface,
 264     IXMLDOMNode** domNode)
 265 {
 266     domcomment *This = impl_from_IXMLDOMComment( iface );
 267
 268     TRACE("(%p)->(%p)\n", This, domNode);
 269
 270     return return_null_node(domNode);
 271 }
 272
 273 static HRESULT WINAPI domcomment_get_previousSibling(
 274     IXMLDOMComment *iface,
 275     IXMLDOMNode** domNode)
 276 {
 277     domcomment *This = impl_from_IXMLDOMComment( iface );
 278
 279     TRACE("(%p)->(%p)\n", This, domNode);
 280
 281     return node_get_previous_sibling(&This->node, domNode);
 282 }
 283
 284 static HRESULT WINAPI domcomment_get_nextSibling(
 285     IXMLDOMComment *iface,
 286     IXMLDOMNode** domNode)
 287 {
 288     domcomment *This = impl_from_IXMLDOMComment( iface );
 289
 290     TRACE("(%p)->(%p)\n", This, domNode);
 291
 292     return node_get_next_sibling(&This->node, domNode);
 293 }
 294
 295 static HRESULT WINAPI domcomment_get_attributes(
 296     IXMLDOMComment *iface,
 297     IXMLDOMNamedNodeMap** attributeMap)
 298 {
 299     domcomment *This = impl_from_IXMLDOMComment( iface );
 300
 301     TRACE("(%p)->(%p)\n", This, attributeMap);
 302
 303     return return_null_ptr((void**)attributeMap);
 304 }
 305
 306 static HRESULT WINAPI domcomment_insertBefore(
 307     IXMLDOMComment *iface,
 308     IXMLDOMNode* newNode, VARIANT refChild,
 309     IXMLDOMNode** outOldNode)
 310 {
 311     domcomment *This = impl_from_IXMLDOMComment( iface );
 312
 313     FIXME("(%p)->(%p x%d %p) needs test\n", This, newNode, V_VT(&refChild), outOldNode);
 314
 315     return node_insert_before(&This->node, newNode, &refChild, outOldNode);
 316 }
 317
 318 static HRESULT WINAPI domcomment_replaceChild(
 319     IXMLDOMComment *iface,
 320     IXMLDOMNode* newNode,
 321     IXMLDOMNode* oldNode,
 322     IXMLDOMNode** outOldNode)
 323 {
 324     domcomment *This = impl_from_IXMLDOMComment( iface );
 325     return IXMLDOMNode_replaceChild( IXMLDOMNode_from_impl(&This->node), newNode, oldNode, outOldNode );
 326 }
 327
 328 static HRESULT WINAPI domcomment_removeChild(
 329     IXMLDOMComment *iface,
 330     IXMLDOMNode* domNode, IXMLDOMNode** oldNode)
 331 {
 332     domcomment *This = impl_from_IXMLDOMComment( iface );
 333     return IXMLDOMNode_removeChild( IXMLDOMNode_from_impl(&This->node), domNode, oldNode );
 334 }
 335
 336 static HRESULT WINAPI domcomment_appendChild(
 337     IXMLDOMComment *iface,
 338     IXMLDOMNode* newNode, IXMLDOMNode** outNewNode)
 339 {
 340     domcomment *This = impl_from_IXMLDOMComment( iface );
 341     return IXMLDOMNode_appendChild( IXMLDOMNode_from_impl(&This->node), newNode, outNewNode );
 342 }
 343
 344 static HRESULT WINAPI domcomment_hasChildNodes(
 345     IXMLDOMComment *iface,
 346     VARIANT_BOOL* pbool)
 347 {
 348     domcomment *This = impl_from_IXMLDOMComment( iface );
 349     return IXMLDOMNode_hasChildNodes( IXMLDOMNode_from_impl(&This->node), pbool );
 350 }
 351
 352 static HRESULT WINAPI domcomment_get_ownerDocument(
 353     IXMLDOMComment *iface,
 354     IXMLDOMDocument** domDocument)
 355 {
 356     domcomment *This = impl_from_IXMLDOMComment( iface );
 357     return IXMLDOMNode_get_ownerDocument( IXMLDOMNode_from_impl(&This->node), domDocument );
 358 }
 359
 360 static HRESULT WINAPI domcomment_cloneNode(
 361     IXMLDOMComment *iface,
 362     VARIANT_BOOL pbool, IXMLDOMNode** outNode)
 363 {
 364     domcomment *This = impl_from_IXMLDOMComment( iface );
 365     return IXMLDOMNode_cloneNode( IXMLDOMNode_from_impl(&This->node), pbool, outNode );
 366 }
 367
 368 static HRESULT WINAPI domcomment_get_nodeTypeString(
 369     IXMLDOMComment *iface,
 370     BSTR* p)
 371 {
 372     domcomment *This = impl_from_IXMLDOMComment( iface );
 373     return IXMLDOMNode_get_nodeTypeString( IXMLDOMNode_from_impl(&This->node), p );
 374 }
 375
 376 static HRESULT WINAPI domcomment_get_text(
 377     IXMLDOMComment *iface,
 378     BSTR* p)
 379 {
 380     domcomment *This = impl_from_IXMLDOMComment( iface );
 381     return IXMLDOMNode_get_text( IXMLDOMNode_from_impl(&This->node), p );
 382 }
 383
 384 static HRESULT WINAPI domcomment_put_text(
 385     IXMLDOMComment *iface,
 386     BSTR p)
 387 {
 388     domcomment *This = impl_from_IXMLDOMComment( iface );
 389     return IXMLDOMNode_put_text( IXMLDOMNode_from_impl(&This->node), p );
 390 }
 391
 392 static HRESULT WINAPI domcomment_get_specified(
 393     IXMLDOMComment *iface,
 394     VARIANT_BOOL* pbool)
 395 {
 396     domcomment *This = impl_from_IXMLDOMComment( iface );
 397     return IXMLDOMNode_get_specified( IXMLDOMNode_from_impl(&This->node), pbool );
 398 }
 399
 400 static HRESULT WINAPI domcomment_get_definition(
 401     IXMLDOMComment *iface,
 402     IXMLDOMNode** domNode)
 403 {
 404     domcomment *This = impl_from_IXMLDOMComment( iface );
 405     return IXMLDOMNode_get_definition( IXMLDOMNode_from_impl(&This->node), domNode );
 406 }
 407
 408 static HRESULT WINAPI domcomment_get_nodeTypedValue(
 409     IXMLDOMComment *iface,
 410     VARIANT* var1)
 411 {
 412     domcomment *This = impl_from_IXMLDOMComment( iface );
 413     return IXMLDOMNode_get_nodeTypedValue( IXMLDOMNode_from_impl(&This->node), var1 );
 414 }
 415
 416 static HRESULT WINAPI domcomment_put_nodeTypedValue(
 417     IXMLDOMComment *iface,
 418     VARIANT var1)
 419 {
 420     domcomment *This = impl_from_IXMLDOMComment( iface );
 421     return IXMLDOMNode_put_nodeTypedValue( IXMLDOMNode_from_impl(&This->node), var1 );
 422 }
 423
 424 static HRESULT WINAPI domcomment_get_dataType(
 425     IXMLDOMComment *iface,
 426     VARIANT* var1)
 427 {
 428     domcomment *This = impl_from_IXMLDOMComment( iface );
 429     return IXMLDOMNode_get_dataType( IXMLDOMNode_from_impl(&This->node), var1 );
 430 }
 431
 432 static HRESULT WINAPI domcomment_put_dataType(
 433     IXMLDOMComment *iface,
 434     BSTR p)
 435 {
 436     domcomment *This = impl_from_IXMLDOMComment( iface );
 437     return IXMLDOMNode_put_dataType( IXMLDOMNode_from_impl(&This->node), p );
 438 }
 439
 440 static HRESULT WINAPI domcomment_get_xml(
 441     IXMLDOMComment *iface,
 442     BSTR* p)
 443 {
 444     domcomment *This = impl_from_IXMLDOMComment( iface );
 445     return IXMLDOMNode_get_xml( IXMLDOMNode_from_impl(&This->node), p );
 446 }
 447
 448 static HRESULT WINAPI domcomment_transformNode(
 449     IXMLDOMComment *iface,
 450     IXMLDOMNode* domNode, BSTR* p)
 451 {
 452     domcomment *This = impl_from_IXMLDOMComment( iface );
 453     return IXMLDOMNode_transformNode( IXMLDOMNode_from_impl(&This->node), domNode, p );
 454 }
 455
 456 static HRESULT WINAPI domcomment_selectNodes(
 457     IXMLDOMComment *iface,
 458     BSTR p, IXMLDOMNodeList** outList)
 459 {
 460     domcomment *This = impl_from_IXMLDOMComment( iface );
 461     return IXMLDOMNode_selectNodes( IXMLDOMNode_from_impl(&This->node), p, outList );
 462 }
 463
 464 static HRESULT WINAPI domcomment_selectSingleNode(
 465     IXMLDOMComment *iface,
 466     BSTR p, IXMLDOMNode** outNode)
 467 {
 468     domcomment *This = impl_from_IXMLDOMComment( iface );
 469     return IXMLDOMNode_selectSingleNode( IXMLDOMNode_from_impl(&This->node), p, outNode );
 470 }
 471
 472 static HRESULT WINAPI domcomment_get_parsed(
 473     IXMLDOMComment *iface,
 474     VARIANT_BOOL* pbool)
 475 {
 476     domcomment *This = impl_from_IXMLDOMComment( iface );
 477     return IXMLDOMNode_get_parsed( IXMLDOMNode_from_impl(&This->node), pbool );
 478 }
 479
 480 static HRESULT WINAPI domcomment_get_namespaceURI(
 481     IXMLDOMComment *iface,
 482     BSTR* p)
 483 {
 484     domcomment *This = impl_from_IXMLDOMComment( iface );
 485     return IXMLDOMNode_get_namespaceURI( IXMLDOMNode_from_impl(&This->node), p );
 486 }
 487
 488 static HRESULT WINAPI domcomment_get_prefix(
 489     IXMLDOMComment *iface,
 490     BSTR* p)
 491 {
 492     domcomment *This = impl_from_IXMLDOMComment( iface );
 493     return IXMLDOMNode_get_prefix( IXMLDOMNode_from_impl(&This->node), p );
 494 }
 495
 496 static HRESULT WINAPI domcomment_get_baseName(
 497     IXMLDOMComment *iface,
 498     BSTR* p)
 499 {
 500     domcomment *This = impl_from_IXMLDOMComment( iface );
 501     return IXMLDOMNode_get_baseName( IXMLDOMNode_from_impl(&This->node), p );
 502 }
 503
 504 static HRESULT WINAPI domcomment_transformNodeToObject(
 505     IXMLDOMComment *iface,
 506     IXMLDOMNode* domNode, VARIANT var1)
 507 {
 508     domcomment *This = impl_from_IXMLDOMComment( iface );
 509     return IXMLDOMNode_transformNodeToObject( IXMLDOMNode_from_impl(&This->node), domNode, var1 );
 510 }
 511
 512 static HRESULT WINAPI domcomment_get_data(
 513     IXMLDOMComment *iface,
 514     BSTR *p)
 515 {
 516     domcomment *This = impl_from_IXMLDOMComment( iface );
 517     HRESULT hr;
 518     VARIANT vRet;
 519
 520     TRACE("(%p)->(%p)\n", This, p);
 521
 522     if(!p)
 523         return E_INVALIDARG;
 524
 525     hr = IXMLDOMComment_get_nodeValue( iface, &vRet );
 526     if(hr == S_OK)
 527     {
 528         *p = V_BSTR(&vRet);
 529     }
 530
 531     return hr;
 532 }
 533
 534 static HRESULT WINAPI domcomment_put_data(
 535     IXMLDOMComment *iface,
 536     BSTR data)
 537 {
 538     domcomment *This = impl_from_IXMLDOMComment( iface );
 539     VARIANT val;
 540
 541     TRACE("(%p)->(%s)\n", This, debugstr_w(data) );
 542
 543     V_VT(&val) = VT_BSTR;
 544     V_BSTR(&val) = data;
 545     return node_put_value(&This->node, &val);
 546 }
 547
 548 static HRESULT WINAPI domcomment_get_length(
 549     IXMLDOMComment *iface,
 550     LONG *len)
 551 {
 552     domcomment *This = impl_from_IXMLDOMComment( iface );
 553     HRESULT hr;
 554     BSTR data;
 555
 556     TRACE("(%p)->(%p)\n", This, len);
 557
 558     if(!len)
 559         return E_INVALIDARG;
 560
 561     hr = IXMLDOMComment_get_data(iface, &data);
 562     if(hr == S_OK)
 563     {
 564         *len = SysStringLen(data);
 565         SysFreeString(data);
 566     }
 567
 568     return hr;
 569 }
 570
 571 static HRESULT WINAPI domcomment_substringData(
 572     IXMLDOMComment *iface,
 573     LONG offset, LONG count, BSTR *p)
 574 {
 575     domcomment *This = impl_from_IXMLDOMComment( iface );
 576     HRESULT hr;
 577     BSTR data;
 578
 579     TRACE("(%p)->(%d %d %p)\n", This, offset, count, p);
 580
 581     if(!p)
 582         return E_INVALIDARG;
 583
 584     *p = NULL;
 585     if(offset < 0 || count < 0)
 586         return E_INVALIDARG;
 587
 588     if(count == 0)
 589         return S_FALSE;
 590
 591     hr = IXMLDOMComment_get_data(iface, &data);
 592     if(hr == S_OK)
 593     {
 594         LONG len = SysStringLen(data);
 595
 596         if(offset < len)
 597         {
 598             if(offset + count > len)
 599                 *p = SysAllocString(&data[offset]);
 600             else
 601                 *p = SysAllocStringLen(&data[offset], count);
 602         }
 603         else
 604             hr = S_FALSE;
 605
 606         SysFreeString(data);
 607     }
 608
 609     return hr;
 610 }
 611
 612 static HRESULT WINAPI domcomment_appendData(
 613     IXMLDOMComment *iface,
 614     BSTR p)
 615 {
 616     domcomment *This = impl_from_IXMLDOMComment( iface );
 617     HRESULT hr;
 618     BSTR data;
 619     LONG p_len;
 620
 621     TRACE("(%p)->(%s)\n", This, debugstr_w(p));
 622
 623     /* Nothing to do if NULL or an Empty string passed in. */
 624     if((p_len = SysStringLen(p)) == 0) return S_OK;
 625
 626     hr = IXMLDOMComment_get_data(iface, &data);
 627     if(hr == S_OK)
 628     {
 629         LONG len = SysStringLen(data);
 630         BSTR str = SysAllocStringLen(NULL, p_len + len);
 631
 632         memcpy(str, data, len*sizeof(WCHAR));
 633         memcpy(&str[len], p, p_len*sizeof(WCHAR));
 634         str[len+p_len] = 0;
 635
 636         hr = IXMLDOMComment_put_data(iface, str);
 637
 638         SysFreeString(str);
 639         SysFreeString(data);
 640     }
 641
 642     return hr;
 643 }
 644
 645 static HRESULT WINAPI domcomment_insertData(
 646     IXMLDOMComment *iface,
 647     LONG offset, BSTR p)
 648 {
 649     domcomment *This = impl_from_IXMLDOMComment( iface );
 650     HRESULT hr;
 651     BSTR data;
 652     LONG p_len;
 653
 654     TRACE("(%p)->(%d %s)\n", This, offset, debugstr_w(p));
 655
 656     /* If have a NULL or empty string, don't do anything. */
 657     if((p_len = SysStringLen(p)) == 0)
 658         return S_OK;
 659
 660     if(offset < 0)
 661     {
 662         return E_INVALIDARG;
 663     }
 664
 665     hr = IXMLDOMComment_get_data(iface, &data);
 666     if(hr == S_OK)
 667     {
 668         LONG len = SysStringLen(data);
 669         BSTR str;
 670
 671         if(len < offset)
 672         {
 673             SysFreeString(data);
 674             return E_INVALIDARG;
 675         }
 676
 677         str = SysAllocStringLen(NULL, len + p_len);
 678         /* start part, supplied string and end part */
 679         memcpy(str, data, offset*sizeof(WCHAR));
 680         memcpy(&str[offset], p, p_len*sizeof(WCHAR));
 681         memcpy(&str[offset+p_len], &data[offset], (len-offset)*sizeof(WCHAR));
 682         str[len+p_len] = 0;
 683
 684         hr = IXMLDOMComment_put_data(iface, str);
 685
 686         SysFreeString(str);
 687         SysFreeString(data);
 688     }
 689
 690     return hr;
 691 }
 692
 693 static HRESULT WINAPI domcomment_deleteData(
 694     IXMLDOMComment *iface,
 695     LONG offset, LONG count)
 696 {
 697     HRESULT hr;
 698     LONG len = -1;
 699     BSTR str;
 700
 701     TRACE("(%p)->(%d %d)\n", iface, offset, count);
 702
 703     hr = IXMLDOMComment_get_length(iface, &len);
 704     if(hr != S_OK) return hr;
 705
 706     if((offset < 0) || (offset > len) || (count < 0))
 707         return E_INVALIDARG;
 708
 709     if(len == 0) return S_OK;
 710
 711     /* cutting start or end */
 712     if((offset == 0) || ((count + offset) >= len))
 713     {
 714         if(offset == 0)
 715             IXMLDOMComment_substringData(iface, count, len - count, &str);
 716         else
 717             IXMLDOMComment_substringData(iface, 0, offset, &str);
 718         hr = IXMLDOMComment_put_data(iface, str);
 719     }
 720     else
 721     /* cutting from the inside */
 722     {
 723         BSTR str_end;
 724
 725         IXMLDOMComment_substringData(iface, 0, offset, &str);
 726         IXMLDOMComment_substringData(iface, offset + count, len - count, &str_end);
 727
 728         hr = IXMLDOMComment_put_data(iface, str);
 729         if(hr == S_OK)
 730             hr = IXMLDOMComment_appendData(iface, str_end);
 731
 732         SysFreeString(str_end);
 733     }
 734
 735     SysFreeString(str);
 736
 737     return hr;
 738 }
 739
 740 static HRESULT WINAPI domcomment_replaceData(
 741     IXMLDOMComment *iface,
 742     LONG offset, LONG count, BSTR p)
 743 {
 744     domcomment *This = impl_from_IXMLDOMComment( iface );
 745     HRESULT hr;
 746
 747     TRACE("(%p)->(%d %d %s)\n", This, offset, count, debugstr_w(p));
 748
 749     hr = IXMLDOMComment_deleteData(iface, offset, count);
 750
 751     if (hr == S_OK)
 752        hr = IXMLDOMComment_insertData(iface, offset, p);
 753
 754     return hr;
 755 }
 756
 757 static const struct IXMLDOMCommentVtbl domcomment_vtbl =
 758 {
 759     domcomment_QueryInterface,
 760     domcomment_AddRef,
 761     domcomment_Release,
 762     domcomment_GetTypeInfoCount,
 763     domcomment_GetTypeInfo,
 764     domcomment_GetIDsOfNames,
 765     domcomment_Invoke,
 766     domcomment_get_nodeName,
 767     domcomment_get_nodeValue,
 768     domcomment_put_nodeValue,
 769     domcomment_get_nodeType,
 770     domcomment_get_parentNode,
 771     domcomment_get_childNodes,
 772     domcomment_get_firstChild,
 773     domcomment_get_lastChild,
 774     domcomment_get_previousSibling,
 775     domcomment_get_nextSibling,
 776     domcomment_get_attributes,
 777     domcomment_insertBefore,
 778     domcomment_replaceChild,
 779     domcomment_removeChild,
 780     domcomment_appendChild,
 781     domcomment_hasChildNodes,
 782     domcomment_get_ownerDocument,
 783     domcomment_cloneNode,
 784     domcomment_get_nodeTypeString,
 785     domcomment_get_text,
 786     domcomment_put_text,
 787     domcomment_get_specified,
 788     domcomment_get_definition,
 789     domcomment_get_nodeTypedValue,
 790     domcomment_put_nodeTypedValue,
 791     domcomment_get_dataType,
 792     domcomment_put_dataType,
 793     domcomment_get_xml,
 794     domcomment_transformNode,
 795     domcomment_selectNodes,
 796     domcomment_selectSingleNode,
 797     domcomment_get_parsed,
 798     domcomment_get_namespaceURI,
 799     domcomment_get_prefix,
 800     domcomment_get_baseName,
 801     domcomment_transformNodeToObject,
 802     domcomment_get_data,
 803     domcomment_put_data,
 804     domcomment_get_length,
 805     domcomment_substringData,
 806     domcomment_appendData,
 807     domcomment_insertData,
 808     domcomment_deleteData,
 809     domcomment_replaceData
 810 };
 811
 812 IUnknown* create_comment( xmlNodePtr comment )
 813 {
 814     domcomment *This;
 815
 816     This = heap_alloc( sizeof *This );
 817     if ( !This )
 818         return NULL;
 819
 820     This->lpVtbl = &domcomment_vtbl;
 821     This->ref = 1;
 822
 823     init_xmlnode(&This->node, comment, (IXMLDOMNode*)&This->lpVtbl, NULL);
 824
 825     return (IUnknown*) &This->lpVtbl;
 826 }
 827
 828 #endif