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 var1,
 309     IXMLDOMNode** outOldNode)
 310 {
 311     domcomment *This = impl_from_IXMLDOMComment( iface );
 312     return IXMLDOMNode_insertBefore( IXMLDOMNode_from_impl(&This->node), newNode, var1, outOldNode );
 313 }
 314
 315 static HRESULT WINAPI domcomment_replaceChild(
 316     IXMLDOMComment *iface,
 317     IXMLDOMNode* newNode,
 318     IXMLDOMNode* oldNode,
 319     IXMLDOMNode** outOldNode)
 320 {
 321     domcomment *This = impl_from_IXMLDOMComment( iface );
 322     return IXMLDOMNode_replaceChild( IXMLDOMNode_from_impl(&This->node), newNode, oldNode, outOldNode );
 323 }
 324
 325 static HRESULT WINAPI domcomment_removeChild(
 326     IXMLDOMComment *iface,
 327     IXMLDOMNode* domNode, IXMLDOMNode** oldNode)
 328 {
 329     domcomment *This = impl_from_IXMLDOMComment( iface );
 330     return IXMLDOMNode_removeChild( IXMLDOMNode_from_impl(&This->node), domNode, oldNode );
 331 }
 332
 333 static HRESULT WINAPI domcomment_appendChild(
 334     IXMLDOMComment *iface,
 335     IXMLDOMNode* newNode, IXMLDOMNode** outNewNode)
 336 {
 337     domcomment *This = impl_from_IXMLDOMComment( iface );
 338     return IXMLDOMNode_appendChild( IXMLDOMNode_from_impl(&This->node), newNode, outNewNode );
 339 }
 340
 341 static HRESULT WINAPI domcomment_hasChildNodes(
 342     IXMLDOMComment *iface,
 343     VARIANT_BOOL* pbool)
 344 {
 345     domcomment *This = impl_from_IXMLDOMComment( iface );
 346     return IXMLDOMNode_hasChildNodes( IXMLDOMNode_from_impl(&This->node), pbool );
 347 }
 348
 349 static HRESULT WINAPI domcomment_get_ownerDocument(
 350     IXMLDOMComment *iface,
 351     IXMLDOMDocument** domDocument)
 352 {
 353     domcomment *This = impl_from_IXMLDOMComment( iface );
 354     return IXMLDOMNode_get_ownerDocument( IXMLDOMNode_from_impl(&This->node), domDocument );
 355 }
 356
 357 static HRESULT WINAPI domcomment_cloneNode(
 358     IXMLDOMComment *iface,
 359     VARIANT_BOOL pbool, IXMLDOMNode** outNode)
 360 {
 361     domcomment *This = impl_from_IXMLDOMComment( iface );
 362     return IXMLDOMNode_cloneNode( IXMLDOMNode_from_impl(&This->node), pbool, outNode );
 363 }
 364
 365 static HRESULT WINAPI domcomment_get_nodeTypeString(
 366     IXMLDOMComment *iface,
 367     BSTR* p)
 368 {
 369     domcomment *This = impl_from_IXMLDOMComment( iface );
 370     return IXMLDOMNode_get_nodeTypeString( IXMLDOMNode_from_impl(&This->node), p );
 371 }
 372
 373 static HRESULT WINAPI domcomment_get_text(
 374     IXMLDOMComment *iface,
 375     BSTR* p)
 376 {
 377     domcomment *This = impl_from_IXMLDOMComment( iface );
 378     return IXMLDOMNode_get_text( IXMLDOMNode_from_impl(&This->node), p );
 379 }
 380
 381 static HRESULT WINAPI domcomment_put_text(
 382     IXMLDOMComment *iface,
 383     BSTR p)
 384 {
 385     domcomment *This = impl_from_IXMLDOMComment( iface );
 386     return IXMLDOMNode_put_text( IXMLDOMNode_from_impl(&This->node), p );
 387 }
 388
 389 static HRESULT WINAPI domcomment_get_specified(
 390     IXMLDOMComment *iface,
 391     VARIANT_BOOL* pbool)
 392 {
 393     domcomment *This = impl_from_IXMLDOMComment( iface );
 394     return IXMLDOMNode_get_specified( IXMLDOMNode_from_impl(&This->node), pbool );
 395 }
 396
 397 static HRESULT WINAPI domcomment_get_definition(
 398     IXMLDOMComment *iface,
 399     IXMLDOMNode** domNode)
 400 {
 401     domcomment *This = impl_from_IXMLDOMComment( iface );
 402     return IXMLDOMNode_get_definition( IXMLDOMNode_from_impl(&This->node), domNode );
 403 }
 404
 405 static HRESULT WINAPI domcomment_get_nodeTypedValue(
 406     IXMLDOMComment *iface,
 407     VARIANT* var1)
 408 {
 409     domcomment *This = impl_from_IXMLDOMComment( iface );
 410     return IXMLDOMNode_get_nodeTypedValue( IXMLDOMNode_from_impl(&This->node), var1 );
 411 }
 412
 413 static HRESULT WINAPI domcomment_put_nodeTypedValue(
 414     IXMLDOMComment *iface,
 415     VARIANT var1)
 416 {
 417     domcomment *This = impl_from_IXMLDOMComment( iface );
 418     return IXMLDOMNode_put_nodeTypedValue( IXMLDOMNode_from_impl(&This->node), var1 );
 419 }
 420
 421 static HRESULT WINAPI domcomment_get_dataType(
 422     IXMLDOMComment *iface,
 423     VARIANT* var1)
 424 {
 425     domcomment *This = impl_from_IXMLDOMComment( iface );
 426     return IXMLDOMNode_get_dataType( IXMLDOMNode_from_impl(&This->node), var1 );
 427 }
 428
 429 static HRESULT WINAPI domcomment_put_dataType(
 430     IXMLDOMComment *iface,
 431     BSTR p)
 432 {
 433     domcomment *This = impl_from_IXMLDOMComment( iface );
 434     return IXMLDOMNode_put_dataType( IXMLDOMNode_from_impl(&This->node), p );
 435 }
 436
 437 static HRESULT WINAPI domcomment_get_xml(
 438     IXMLDOMComment *iface,
 439     BSTR* p)
 440 {
 441     domcomment *This = impl_from_IXMLDOMComment( iface );
 442     return IXMLDOMNode_get_xml( IXMLDOMNode_from_impl(&This->node), p );
 443 }
 444
 445 static HRESULT WINAPI domcomment_transformNode(
 446     IXMLDOMComment *iface,
 447     IXMLDOMNode* domNode, BSTR* p)
 448 {
 449     domcomment *This = impl_from_IXMLDOMComment( iface );
 450     return IXMLDOMNode_transformNode( IXMLDOMNode_from_impl(&This->node), domNode, p );
 451 }
 452
 453 static HRESULT WINAPI domcomment_selectNodes(
 454     IXMLDOMComment *iface,
 455     BSTR p, IXMLDOMNodeList** outList)
 456 {
 457     domcomment *This = impl_from_IXMLDOMComment( iface );
 458     return IXMLDOMNode_selectNodes( IXMLDOMNode_from_impl(&This->node), p, outList );
 459 }
 460
 461 static HRESULT WINAPI domcomment_selectSingleNode(
 462     IXMLDOMComment *iface,
 463     BSTR p, IXMLDOMNode** outNode)
 464 {
 465     domcomment *This = impl_from_IXMLDOMComment( iface );
 466     return IXMLDOMNode_selectSingleNode( IXMLDOMNode_from_impl(&This->node), p, outNode );
 467 }
 468
 469 static HRESULT WINAPI domcomment_get_parsed(
 470     IXMLDOMComment *iface,
 471     VARIANT_BOOL* pbool)
 472 {
 473     domcomment *This = impl_from_IXMLDOMComment( iface );
 474     return IXMLDOMNode_get_parsed( IXMLDOMNode_from_impl(&This->node), pbool );
 475 }
 476
 477 static HRESULT WINAPI domcomment_get_namespaceURI(
 478     IXMLDOMComment *iface,
 479     BSTR* p)
 480 {
 481     domcomment *This = impl_from_IXMLDOMComment( iface );
 482     return IXMLDOMNode_get_namespaceURI( IXMLDOMNode_from_impl(&This->node), p );
 483 }
 484
 485 static HRESULT WINAPI domcomment_get_prefix(
 486     IXMLDOMComment *iface,
 487     BSTR* p)
 488 {
 489     domcomment *This = impl_from_IXMLDOMComment( iface );
 490     return IXMLDOMNode_get_prefix( IXMLDOMNode_from_impl(&This->node), p );
 491 }
 492
 493 static HRESULT WINAPI domcomment_get_baseName(
 494     IXMLDOMComment *iface,
 495     BSTR* p)
 496 {
 497     domcomment *This = impl_from_IXMLDOMComment( iface );
 498     return IXMLDOMNode_get_baseName( IXMLDOMNode_from_impl(&This->node), p );
 499 }
 500
 501 static HRESULT WINAPI domcomment_transformNodeToObject(
 502     IXMLDOMComment *iface,
 503     IXMLDOMNode* domNode, VARIANT var1)
 504 {
 505     domcomment *This = impl_from_IXMLDOMComment( iface );
 506     return IXMLDOMNode_transformNodeToObject( IXMLDOMNode_from_impl(&This->node), domNode, var1 );
 507 }
 508
 509 static HRESULT WINAPI domcomment_get_data(
 510     IXMLDOMComment *iface,
 511     BSTR *p)
 512 {
 513     domcomment *This = impl_from_IXMLDOMComment( iface );
 514     HRESULT hr;
 515     VARIANT vRet;
 516
 517     TRACE("(%p)->(%p)\n", This, p);
 518
 519     if(!p)
 520         return E_INVALIDARG;
 521
 522     hr = IXMLDOMComment_get_nodeValue( iface, &vRet );
 523     if(hr == S_OK)
 524     {
 525         *p = V_BSTR(&vRet);
 526     }
 527
 528     return hr;
 529 }
 530
 531 static HRESULT WINAPI domcomment_put_data(
 532     IXMLDOMComment *iface,
 533     BSTR data)
 534 {
 535     domcomment *This = impl_from_IXMLDOMComment( iface );
 536     VARIANT val;
 537
 538     TRACE("(%p)->(%s)\n", This, debugstr_w(data) );
 539
 540     V_VT(&val) = VT_BSTR;
 541     V_BSTR(&val) = data;
 542     return node_put_value(&This->node, &val);
 543 }
 544
 545 static HRESULT WINAPI domcomment_get_length(
 546     IXMLDOMComment *iface,
 547     LONG *len)
 548 {
 549     domcomment *This = impl_from_IXMLDOMComment( iface );
 550     HRESULT hr;
 551     BSTR data;
 552
 553     TRACE("(%p)->(%p)\n", This, len);
 554
 555     if(!len)
 556         return E_INVALIDARG;
 557
 558     hr = IXMLDOMComment_get_data(iface, &data);
 559     if(hr == S_OK)
 560     {
 561         *len = SysStringLen(data);
 562         SysFreeString(data);
 563     }
 564
 565     return hr;
 566 }
 567
 568 static HRESULT WINAPI domcomment_substringData(
 569     IXMLDOMComment *iface,
 570     LONG offset, LONG count, BSTR *p)
 571 {
 572     domcomment *This = impl_from_IXMLDOMComment( iface );
 573     HRESULT hr;
 574     BSTR data;
 575
 576     TRACE("(%p)->(%d %d %p)\n", This, offset, count, p);
 577
 578     if(!p)
 579         return E_INVALIDARG;
 580
 581     *p = NULL;
 582     if(offset < 0 || count < 0)
 583         return E_INVALIDARG;
 584
 585     if(count == 0)
 586         return S_FALSE;
 587
 588     hr = IXMLDOMComment_get_data(iface, &data);
 589     if(hr == S_OK)
 590     {
 591         LONG len = SysStringLen(data);
 592
 593         if(offset < len)
 594         {
 595             if(offset + count > len)
 596                 *p = SysAllocString(&data[offset]);
 597             else
 598                 *p = SysAllocStringLen(&data[offset], count);
 599         }
 600         else
 601             hr = S_FALSE;
 602
 603         SysFreeString(data);
 604     }
 605
 606     return hr;
 607 }
 608
 609 static HRESULT WINAPI domcomment_appendData(
 610     IXMLDOMComment *iface,
 611     BSTR p)
 612 {
 613     domcomment *This = impl_from_IXMLDOMComment( iface );
 614     HRESULT hr;
 615     BSTR data;
 616     LONG p_len;
 617
 618     TRACE("(%p)->(%s)\n", This, debugstr_w(p));
 619
 620     /* Nothing to do if NULL or an Empty string passed in. */
 621     if((p_len = SysStringLen(p)) == 0) return S_OK;
 622
 623     hr = IXMLDOMComment_get_data(iface, &data);
 624     if(hr == S_OK)
 625     {
 626         LONG len = SysStringLen(data);
 627         BSTR str = SysAllocStringLen(NULL, p_len + len);
 628
 629         memcpy(str, data, len*sizeof(WCHAR));
 630         memcpy(&str[len], p, p_len*sizeof(WCHAR));
 631         str[len+p_len] = 0;
 632
 633         hr = IXMLDOMComment_put_data(iface, str);
 634
 635         SysFreeString(str);
 636         SysFreeString(data);
 637     }
 638
 639     return hr;
 640 }
 641
 642 static HRESULT WINAPI domcomment_insertData(
 643     IXMLDOMComment *iface,
 644     LONG offset, BSTR p)
 645 {
 646     domcomment *This = impl_from_IXMLDOMComment( iface );
 647     HRESULT hr;
 648     BSTR data;
 649     LONG p_len;
 650
 651     TRACE("(%p)->(%d %s)\n", This, offset, debugstr_w(p));
 652
 653     /* If have a NULL or empty string, don't do anything. */
 654     if((p_len = SysStringLen(p)) == 0)
 655         return S_OK;
 656
 657     if(offset < 0)
 658     {
 659         return E_INVALIDARG;
 660     }
 661
 662     hr = IXMLDOMComment_get_data(iface, &data);
 663     if(hr == S_OK)
 664     {
 665         LONG len = SysStringLen(data);
 666         BSTR str;
 667
 668         if(len < offset)
 669         {
 670             SysFreeString(data);
 671             return E_INVALIDARG;
 672         }
 673
 674         str = SysAllocStringLen(NULL, len + p_len);
 675         /* start part, supplied string and end part */
 676         memcpy(str, data, offset*sizeof(WCHAR));
 677         memcpy(&str[offset], p, p_len*sizeof(WCHAR));
 678         memcpy(&str[offset+p_len], &data[offset], (len-offset)*sizeof(WCHAR));
 679         str[len+p_len] = 0;
 680
 681         hr = IXMLDOMComment_put_data(iface, str);
 682
 683         SysFreeString(str);
 684         SysFreeString(data);
 685     }
 686
 687     return hr;
 688 }
 689
 690 static HRESULT WINAPI domcomment_deleteData(
 691     IXMLDOMComment *iface,
 692     LONG offset, LONG count)
 693 {
 694     HRESULT hr;
 695     LONG len = -1;
 696     BSTR str;
 697
 698     TRACE("(%p)->(%d %d)\n", iface, offset, count);
 699
 700     hr = IXMLDOMComment_get_length(iface, &len);
 701     if(hr != S_OK) return hr;
 702
 703     if((offset < 0) || (offset > len) || (count < 0))
 704         return E_INVALIDARG;
 705
 706     if(len == 0) return S_OK;
 707
 708     /* cutting start or end */
 709     if((offset == 0) || ((count + offset) >= len))
 710     {
 711         if(offset == 0)
 712             IXMLDOMComment_substringData(iface, count, len - count, &str);
 713         else
 714             IXMLDOMComment_substringData(iface, 0, offset, &str);
 715         hr = IXMLDOMComment_put_data(iface, str);
 716     }
 717     else
 718     /* cutting from the inside */
 719     {
 720         BSTR str_end;
 721
 722         IXMLDOMComment_substringData(iface, 0, offset, &str);
 723         IXMLDOMComment_substringData(iface, offset + count, len - count, &str_end);
 724
 725         hr = IXMLDOMComment_put_data(iface, str);
 726         if(hr == S_OK)
 727             hr = IXMLDOMComment_appendData(iface, str_end);
 728
 729         SysFreeString(str_end);
 730     }
 731
 732     SysFreeString(str);
 733
 734     return hr;
 735 }
 736
 737 static HRESULT WINAPI domcomment_replaceData(
 738     IXMLDOMComment *iface,
 739     LONG offset, LONG count, BSTR p)
 740 {
 741     domcomment *This = impl_from_IXMLDOMComment( iface );
 742     HRESULT hr;
 743
 744     TRACE("(%p)->(%d %d %s)\n", This, offset, count, debugstr_w(p));
 745
 746     hr = IXMLDOMComment_deleteData(iface, offset, count);
 747
 748     if (hr == S_OK)
 749        hr = IXMLDOMComment_insertData(iface, offset, p);
 750
 751     return hr;
 752 }
 753
 754 static const struct IXMLDOMCommentVtbl domcomment_vtbl =
 755 {
 756     domcomment_QueryInterface,
 757     domcomment_AddRef,
 758     domcomment_Release,
 759     domcomment_GetTypeInfoCount,
 760     domcomment_GetTypeInfo,
 761     domcomment_GetIDsOfNames,
 762     domcomment_Invoke,
 763     domcomment_get_nodeName,
 764     domcomment_get_nodeValue,
 765     domcomment_put_nodeValue,
 766     domcomment_get_nodeType,
 767     domcomment_get_parentNode,
 768     domcomment_get_childNodes,
 769     domcomment_get_firstChild,
 770     domcomment_get_lastChild,
 771     domcomment_get_previousSibling,
 772     domcomment_get_nextSibling,
 773     domcomment_get_attributes,
 774     domcomment_insertBefore,
 775     domcomment_replaceChild,
 776     domcomment_removeChild,
 777     domcomment_appendChild,
 778     domcomment_hasChildNodes,
 779     domcomment_get_ownerDocument,
 780     domcomment_cloneNode,
 781     domcomment_get_nodeTypeString,
 782     domcomment_get_text,
 783     domcomment_put_text,
 784     domcomment_get_specified,
 785     domcomment_get_definition,
 786     domcomment_get_nodeTypedValue,
 787     domcomment_put_nodeTypedValue,
 788     domcomment_get_dataType,
 789     domcomment_put_dataType,
 790     domcomment_get_xml,
 791     domcomment_transformNode,
 792     domcomment_selectNodes,
 793     domcomment_selectSingleNode,
 794     domcomment_get_parsed,
 795     domcomment_get_namespaceURI,
 796     domcomment_get_prefix,
 797     domcomment_get_baseName,
 798     domcomment_transformNodeToObject,
 799     domcomment_get_data,
 800     domcomment_put_data,
 801     domcomment_get_length,
 802     domcomment_substringData,
 803     domcomment_appendData,
 804     domcomment_insertData,
 805     domcomment_deleteData,
 806     domcomment_replaceData
 807 };
 808
 809 IUnknown* create_comment( xmlNodePtr comment )
 810 {
 811     domcomment *This;
 812
 813     This = heap_alloc( sizeof *This );
 814     if ( !This )
 815         return NULL;
 816
 817     This->lpVtbl = &domcomment_vtbl;
 818     This->ref = 1;
 819
 820     init_xmlnode(&This->node, comment, (IXMLDOMNode*)&This->lpVtbl, NULL);
 821
 822     return (IUnknown*) &This->lpVtbl;
 823 }
 824
 825 #endif