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     IXMLDOMComment IXMLDOMComment_iface;
  44     LONG ref;
  45 } domcomment;
  46
  47 static inline domcomment *impl_from_IXMLDOMComment( IXMLDOMComment *iface )
  48 {
  49     return CONTAINING_RECORD(iface, domcomment, IXMLDOMComment_iface);
  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->IXMLDOMComment_iface, dispIdMember, wFlags,
 175                 pDispParams, 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
 326     FIXME("(%p)->(%p %p %p) needs tests\n", This, newNode, oldNode, outOldNode);
 327
 328     return node_replace_child(&This->node, newNode, oldNode, outOldNode);
 329 }
 330
 331 static HRESULT WINAPI domcomment_removeChild(
 332     IXMLDOMComment *iface,
 333     IXMLDOMNode* domNode, IXMLDOMNode** oldNode)
 334 {
 335     domcomment *This = impl_from_IXMLDOMComment( iface );
 336     return IXMLDOMNode_removeChild( IXMLDOMNode_from_impl(&This->node), domNode, oldNode );
 337 }
 338
 339 static HRESULT WINAPI domcomment_appendChild(
 340     IXMLDOMComment *iface,
 341     IXMLDOMNode* newNode, IXMLDOMNode** outNewNode)
 342 {
 343     domcomment *This = impl_from_IXMLDOMComment( iface );
 344     return IXMLDOMNode_appendChild( IXMLDOMNode_from_impl(&This->node), newNode, outNewNode );
 345 }
 346
 347 static HRESULT WINAPI domcomment_hasChildNodes(
 348     IXMLDOMComment *iface,
 349     VARIANT_BOOL* pbool)
 350 {
 351     domcomment *This = impl_from_IXMLDOMComment( iface );
 352     return IXMLDOMNode_hasChildNodes( IXMLDOMNode_from_impl(&This->node), pbool );
 353 }
 354
 355 static HRESULT WINAPI domcomment_get_ownerDocument(
 356     IXMLDOMComment *iface,
 357     IXMLDOMDocument** domDocument)
 358 {
 359     domcomment *This = impl_from_IXMLDOMComment( iface );
 360     return IXMLDOMNode_get_ownerDocument( IXMLDOMNode_from_impl(&This->node), domDocument );
 361 }
 362
 363 static HRESULT WINAPI domcomment_cloneNode(
 364     IXMLDOMComment *iface,
 365     VARIANT_BOOL deep, IXMLDOMNode** outNode)
 366 {
 367     domcomment *This = impl_from_IXMLDOMComment( iface );
 368     TRACE("(%p)->(%d %p)\n", This, deep, outNode);
 369     return node_clone( &This->node, deep, outNode );
 370 }
 371
 372 static HRESULT WINAPI domcomment_get_nodeTypeString(
 373     IXMLDOMComment *iface,
 374     BSTR* p)
 375 {
 376     domcomment *This = impl_from_IXMLDOMComment( iface );
 377     static const WCHAR commentW[] = {'c','o','m','m','e','n','t',0};
 378
 379     TRACE("(%p)->(%p)\n", This, p);
 380
 381     return return_bstr(commentW, p);
 382 }
 383
 384 static HRESULT WINAPI domcomment_get_text(
 385     IXMLDOMComment *iface,
 386     BSTR* p)
 387 {
 388     domcomment *This = impl_from_IXMLDOMComment( iface );
 389     return IXMLDOMNode_get_text( IXMLDOMNode_from_impl(&This->node), p );
 390 }
 391
 392 static HRESULT WINAPI domcomment_put_text(
 393     IXMLDOMComment *iface,
 394     BSTR p)
 395 {
 396     domcomment *This = impl_from_IXMLDOMComment( iface );
 397     TRACE("(%p)->(%s)\n", This, debugstr_w(p));
 398     return node_put_text( &This->node, p );
 399 }
 400
 401 static HRESULT WINAPI domcomment_get_specified(
 402     IXMLDOMComment *iface,
 403     VARIANT_BOOL* isSpecified)
 404 {
 405     domcomment *This = impl_from_IXMLDOMComment( iface );
 406     FIXME("(%p)->(%p) stub!\n", This, isSpecified);
 407     *isSpecified = VARIANT_TRUE;
 408     return S_OK;
 409 }
 410
 411 static HRESULT WINAPI domcomment_get_definition(
 412     IXMLDOMComment *iface,
 413     IXMLDOMNode** definitionNode)
 414 {
 415     domcomment *This = impl_from_IXMLDOMComment( iface );
 416     FIXME("(%p)->(%p)\n", This, definitionNode);
 417     return E_NOTIMPL;
 418 }
 419
 420 static HRESULT WINAPI domcomment_get_nodeTypedValue(
 421     IXMLDOMComment *iface,
 422     VARIANT* var1)
 423 {
 424     domcomment *This = impl_from_IXMLDOMComment( iface );
 425     FIXME("(%p)->(%p)\n", This, var1);
 426     return return_null_var(var1);
 427 }
 428
 429 static HRESULT WINAPI domcomment_put_nodeTypedValue(
 430     IXMLDOMComment *iface,
 431     VARIANT typedValue)
 432 {
 433     domcomment *This = impl_from_IXMLDOMComment( iface );
 434     FIXME("(%p)->(%s)\n", This, debugstr_variant(&typedValue));
 435     return E_NOTIMPL;
 436 }
 437
 438 static HRESULT WINAPI domcomment_get_dataType(
 439     IXMLDOMComment *iface,
 440     VARIANT* typename)
 441 {
 442     domcomment *This = impl_from_IXMLDOMComment( iface );
 443     TRACE("(%p)->(%p)\n", This, typename);
 444     return return_null_var( typename );
 445 }
 446
 447 static HRESULT WINAPI domcomment_put_dataType(
 448     IXMLDOMComment *iface,
 449     BSTR p)
 450 {
 451     domcomment *This = impl_from_IXMLDOMComment( iface );
 452
 453     FIXME("(%p)->(%s)\n", This, debugstr_w(p));
 454
 455     if(!p)
 456         return E_INVALIDARG;
 457
 458     return E_FAIL;
 459 }
 460
 461 static HRESULT WINAPI domcomment_get_xml(
 462     IXMLDOMComment *iface,
 463     BSTR* p)
 464 {
 465     domcomment *This = impl_from_IXMLDOMComment( iface );
 466
 467     TRACE("(%p)->(%p)\n", This, p);
 468
 469     return node_get_xml(&This->node, FALSE, FALSE, p);
 470 }
 471
 472 static HRESULT WINAPI domcomment_transformNode(
 473     IXMLDOMComment *iface,
 474     IXMLDOMNode* domNode, BSTR* p)
 475 {
 476     domcomment *This = impl_from_IXMLDOMComment( iface );
 477     return IXMLDOMNode_transformNode( IXMLDOMNode_from_impl(&This->node), domNode, p );
 478 }
 479
 480 static HRESULT WINAPI domcomment_selectNodes(
 481     IXMLDOMComment *iface,
 482     BSTR p, IXMLDOMNodeList** outList)
 483 {
 484     domcomment *This = impl_from_IXMLDOMComment( iface );
 485     return IXMLDOMNode_selectNodes( IXMLDOMNode_from_impl(&This->node), p, outList );
 486 }
 487
 488 static HRESULT WINAPI domcomment_selectSingleNode(
 489     IXMLDOMComment *iface,
 490     BSTR p, IXMLDOMNode** outNode)
 491 {
 492     domcomment *This = impl_from_IXMLDOMComment( iface );
 493     return IXMLDOMNode_selectSingleNode( IXMLDOMNode_from_impl(&This->node), p, outNode );
 494 }
 495
 496 static HRESULT WINAPI domcomment_get_parsed(
 497     IXMLDOMComment *iface,
 498     VARIANT_BOOL* isParsed)
 499 {
 500     domcomment *This = impl_from_IXMLDOMComment( iface );
 501     FIXME("(%p)->(%p) stub!\n", This, isParsed);
 502     *isParsed = VARIANT_TRUE;
 503     return S_OK;
 504 }
 505
 506 static HRESULT WINAPI domcomment_get_namespaceURI(
 507     IXMLDOMComment *iface,
 508     BSTR* p)
 509 {
 510     domcomment *This = impl_from_IXMLDOMComment( iface );
 511     TRACE("(%p)->(%p)\n", This, p);
 512     return node_get_namespaceURI(&This->node, p);
 513 }
 514
 515 static HRESULT WINAPI domcomment_get_prefix(
 516     IXMLDOMComment *iface,
 517     BSTR* prefix)
 518 {
 519     domcomment *This = impl_from_IXMLDOMComment( iface );
 520     TRACE("(%p)->(%p)\n", This, prefix);
 521     return return_null_bstr( prefix );
 522 }
 523
 524 static HRESULT WINAPI domcomment_get_baseName(
 525     IXMLDOMComment *iface,
 526     BSTR* name)
 527 {
 528     domcomment *This = impl_from_IXMLDOMComment( iface );
 529     TRACE("(%p)->(%p)\n", This, name);
 530     return return_null_bstr( name );
 531 }
 532
 533 static HRESULT WINAPI domcomment_transformNodeToObject(
 534     IXMLDOMComment *iface,
 535     IXMLDOMNode* domNode, VARIANT var1)
 536 {
 537     domcomment *This = impl_from_IXMLDOMComment( iface );
 538     FIXME("(%p)->(%p %s)\n", This, domNode, debugstr_variant(&var1));
 539     return E_NOTIMPL;
 540 }
 541
 542 static HRESULT WINAPI domcomment_get_data(
 543     IXMLDOMComment *iface,
 544     BSTR *p)
 545 {
 546     domcomment *This = impl_from_IXMLDOMComment( iface );
 547     HRESULT hr;
 548     VARIANT vRet;
 549
 550     TRACE("(%p)->(%p)\n", This, p);
 551
 552     if(!p)
 553         return E_INVALIDARG;
 554
 555     hr = IXMLDOMComment_get_nodeValue( iface, &vRet );
 556     if(hr == S_OK)
 557     {
 558         *p = V_BSTR(&vRet);
 559     }
 560
 561     return hr;
 562 }
 563
 564 static HRESULT WINAPI domcomment_put_data(
 565     IXMLDOMComment *iface,
 566     BSTR data)
 567 {
 568     domcomment *This = impl_from_IXMLDOMComment( iface );
 569     VARIANT val;
 570
 571     TRACE("(%p)->(%s)\n", This, debugstr_w(data) );
 572
 573     V_VT(&val) = VT_BSTR;
 574     V_BSTR(&val) = data;
 575     return node_put_value(&This->node, &val);
 576 }
 577
 578 static HRESULT WINAPI domcomment_get_length(
 579     IXMLDOMComment *iface,
 580     LONG *len)
 581 {
 582     domcomment *This = impl_from_IXMLDOMComment( iface );
 583     HRESULT hr;
 584     BSTR data;
 585
 586     TRACE("(%p)->(%p)\n", This, len);
 587
 588     if(!len)
 589         return E_INVALIDARG;
 590
 591     hr = IXMLDOMComment_get_data(iface, &data);
 592     if(hr == S_OK)
 593     {
 594         *len = SysStringLen(data);
 595         SysFreeString(data);
 596     }
 597
 598     return hr;
 599 }
 600
 601 static HRESULT WINAPI domcomment_substringData(
 602     IXMLDOMComment *iface,
 603     LONG offset, LONG count, BSTR *p)
 604 {
 605     domcomment *This = impl_from_IXMLDOMComment( iface );
 606     HRESULT hr;
 607     BSTR data;
 608
 609     TRACE("(%p)->(%d %d %p)\n", This, offset, count, p);
 610
 611     if(!p)
 612         return E_INVALIDARG;
 613
 614     *p = NULL;
 615     if(offset < 0 || count < 0)
 616         return E_INVALIDARG;
 617
 618     if(count == 0)
 619         return S_FALSE;
 620
 621     hr = IXMLDOMComment_get_data(iface, &data);
 622     if(hr == S_OK)
 623     {
 624         LONG len = SysStringLen(data);
 625
 626         if(offset < len)
 627         {
 628             if(offset + count > len)
 629                 *p = SysAllocString(&data[offset]);
 630             else
 631                 *p = SysAllocStringLen(&data[offset], count);
 632         }
 633         else
 634             hr = S_FALSE;
 635
 636         SysFreeString(data);
 637     }
 638
 639     return hr;
 640 }
 641
 642 static HRESULT WINAPI domcomment_appendData(
 643     IXMLDOMComment *iface,
 644     BSTR p)
 645 {
 646     domcomment *This = impl_from_IXMLDOMComment( iface );
 647     HRESULT hr;
 648     BSTR data;
 649     LONG p_len;
 650
 651     TRACE("(%p)->(%s)\n", This, debugstr_w(p));
 652
 653     /* Nothing to do if NULL or an Empty string passed in. */
 654     if((p_len = SysStringLen(p)) == 0) return S_OK;
 655
 656     hr = IXMLDOMComment_get_data(iface, &data);
 657     if(hr == S_OK)
 658     {
 659         LONG len = SysStringLen(data);
 660         BSTR str = SysAllocStringLen(NULL, p_len + len);
 661
 662         memcpy(str, data, len*sizeof(WCHAR));
 663         memcpy(&str[len], p, p_len*sizeof(WCHAR));
 664         str[len+p_len] = 0;
 665
 666         hr = IXMLDOMComment_put_data(iface, str);
 667
 668         SysFreeString(str);
 669         SysFreeString(data);
 670     }
 671
 672     return hr;
 673 }
 674
 675 static HRESULT WINAPI domcomment_insertData(
 676     IXMLDOMComment *iface,
 677     LONG offset, BSTR p)
 678 {
 679     domcomment *This = impl_from_IXMLDOMComment( iface );
 680     HRESULT hr;
 681     BSTR data;
 682     LONG p_len;
 683
 684     TRACE("(%p)->(%d %s)\n", This, offset, debugstr_w(p));
 685
 686     /* If have a NULL or empty string, don't do anything. */
 687     if((p_len = SysStringLen(p)) == 0)
 688         return S_OK;
 689
 690     if(offset < 0)
 691     {
 692         return E_INVALIDARG;
 693     }
 694
 695     hr = IXMLDOMComment_get_data(iface, &data);
 696     if(hr == S_OK)
 697     {
 698         LONG len = SysStringLen(data);
 699         BSTR str;
 700
 701         if(len < offset)
 702         {
 703             SysFreeString(data);
 704             return E_INVALIDARG;
 705         }
 706
 707         str = SysAllocStringLen(NULL, len + p_len);
 708         /* start part, supplied string and end part */
 709         memcpy(str, data, offset*sizeof(WCHAR));
 710         memcpy(&str[offset], p, p_len*sizeof(WCHAR));
 711         memcpy(&str[offset+p_len], &data[offset], (len-offset)*sizeof(WCHAR));
 712         str[len+p_len] = 0;
 713
 714         hr = IXMLDOMComment_put_data(iface, str);
 715
 716         SysFreeString(str);
 717         SysFreeString(data);
 718     }
 719
 720     return hr;
 721 }
 722
 723 static HRESULT WINAPI domcomment_deleteData(
 724     IXMLDOMComment *iface,
 725     LONG offset, LONG count)
 726 {
 727     HRESULT hr;
 728     LONG len = -1;
 729     BSTR str;
 730
 731     TRACE("(%p)->(%d %d)\n", iface, offset, count);
 732
 733     hr = IXMLDOMComment_get_length(iface, &len);
 734     if(hr != S_OK) return hr;
 735
 736     if((offset < 0) || (offset > len) || (count < 0))
 737         return E_INVALIDARG;
 738
 739     if(len == 0) return S_OK;
 740
 741     /* cutting start or end */
 742     if((offset == 0) || ((count + offset) >= len))
 743     {
 744         if(offset == 0)
 745             IXMLDOMComment_substringData(iface, count, len - count, &str);
 746         else
 747             IXMLDOMComment_substringData(iface, 0, offset, &str);
 748         hr = IXMLDOMComment_put_data(iface, str);
 749     }
 750     else
 751     /* cutting from the inside */
 752     {
 753         BSTR str_end;
 754
 755         IXMLDOMComment_substringData(iface, 0, offset, &str);
 756         IXMLDOMComment_substringData(iface, offset + count, len - count, &str_end);
 757
 758         hr = IXMLDOMComment_put_data(iface, str);
 759         if(hr == S_OK)
 760             hr = IXMLDOMComment_appendData(iface, str_end);
 761
 762         SysFreeString(str_end);
 763     }
 764
 765     SysFreeString(str);
 766
 767     return hr;
 768 }
 769
 770 static HRESULT WINAPI domcomment_replaceData(
 771     IXMLDOMComment *iface,
 772     LONG offset, LONG count, BSTR p)
 773 {
 774     domcomment *This = impl_from_IXMLDOMComment( iface );
 775     HRESULT hr;
 776
 777     TRACE("(%p)->(%d %d %s)\n", This, offset, count, debugstr_w(p));
 778
 779     hr = IXMLDOMComment_deleteData(iface, offset, count);
 780
 781     if (hr == S_OK)
 782        hr = IXMLDOMComment_insertData(iface, offset, p);
 783
 784     return hr;
 785 }
 786
 787 static const struct IXMLDOMCommentVtbl domcomment_vtbl =
 788 {
 789     domcomment_QueryInterface,
 790     domcomment_AddRef,
 791     domcomment_Release,
 792     domcomment_GetTypeInfoCount,
 793     domcomment_GetTypeInfo,
 794     domcomment_GetIDsOfNames,
 795     domcomment_Invoke,
 796     domcomment_get_nodeName,
 797     domcomment_get_nodeValue,
 798     domcomment_put_nodeValue,
 799     domcomment_get_nodeType,
 800     domcomment_get_parentNode,
 801     domcomment_get_childNodes,
 802     domcomment_get_firstChild,
 803     domcomment_get_lastChild,
 804     domcomment_get_previousSibling,
 805     domcomment_get_nextSibling,
 806     domcomment_get_attributes,
 807     domcomment_insertBefore,
 808     domcomment_replaceChild,
 809     domcomment_removeChild,
 810     domcomment_appendChild,
 811     domcomment_hasChildNodes,
 812     domcomment_get_ownerDocument,
 813     domcomment_cloneNode,
 814     domcomment_get_nodeTypeString,
 815     domcomment_get_text,
 816     domcomment_put_text,
 817     domcomment_get_specified,
 818     domcomment_get_definition,
 819     domcomment_get_nodeTypedValue,
 820     domcomment_put_nodeTypedValue,
 821     domcomment_get_dataType,
 822     domcomment_put_dataType,
 823     domcomment_get_xml,
 824     domcomment_transformNode,
 825     domcomment_selectNodes,
 826     domcomment_selectSingleNode,
 827     domcomment_get_parsed,
 828     domcomment_get_namespaceURI,
 829     domcomment_get_prefix,
 830     domcomment_get_baseName,
 831     domcomment_transformNodeToObject,
 832     domcomment_get_data,
 833     domcomment_put_data,
 834     domcomment_get_length,
 835     domcomment_substringData,
 836     domcomment_appendData,
 837     domcomment_insertData,
 838     domcomment_deleteData,
 839     domcomment_replaceData
 840 };
 841
 842 IUnknown* create_comment( xmlNodePtr comment )
 843 {
 844     domcomment *This;
 845
 846     This = heap_alloc( sizeof *This );
 847     if ( !This )
 848         return NULL;
 849
 850     This->IXMLDOMComment_iface.lpVtbl = &domcomment_vtbl;
 851     This->ref = 1;
 852
 853     init_xmlnode(&This->node, comment, (IXMLDOMNode*)&This->IXMLDOMComment_iface, NULL);
 854
 855     return (IUnknown*)&This->IXMLDOMComment_iface;
 856 }
 857
 858 #endif