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