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 #ifdef HAVE_LIBXML2
  27 # include <libxml/parser.h>
  28 # include <libxml/xmlerror.h>
  29 #endif
  30
  31 #include "windef.h"
  32 #include "winbase.h"
  33 #include "winuser.h"
  34 #include "ole2.h"
  35 #include "msxml6.h"
  36
  37 #include "msxml_private.h"
  38
  39 #include "wine/debug.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(msxml);
  42
  43 #ifdef HAVE_LIBXML2
  44
  45 typedef struct _domcomment
  46 {
  47     xmlnode node;
  48     IXMLDOMComment IXMLDOMComment_iface;
  49     LONG ref;
  50 } domcomment;
  51
  52 static const tid_t domcomment_se_tids[] = {
  53     IXMLDOMNode_tid,
  54     IXMLDOMComment_tid,
  55     0
  56 };
  57
  58 static inline domcomment *impl_from_IXMLDOMComment( IXMLDOMComment *iface )
  59 {
  60     return CONTAINING_RECORD(iface, domcomment, IXMLDOMComment_iface);
  61 }
  62
  63 static HRESULT WINAPI domcomment_QueryInterface(
  64     IXMLDOMComment *iface,
  65     REFIID riid,
  66     void** ppvObject )
  67 {
  68     domcomment *This = impl_from_IXMLDOMComment( iface );
  69     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppvObject);
  70
  71     if ( IsEqualGUID( riid, &IID_IXMLDOMComment ) ||
  72          IsEqualGUID( riid, &IID_IXMLDOMCharacterData) ||
  73          IsEqualGUID( riid, &IID_IXMLDOMNode ) ||
  74          IsEqualGUID( riid, &IID_IDispatch ) ||
  75          IsEqualGUID( riid, &IID_IUnknown ) )
  76     {
  77         *ppvObject = iface;
  78     }
  79     else if(node_query_interface(&This->node, riid, ppvObject))
  80     {
  81         return *ppvObject ? S_OK : E_NOINTERFACE;
  82     }
  83     else if(IsEqualGUID( riid, &IID_ISupportErrorInfo ))
  84     {
  85         return node_create_supporterrorinfo(domcomment_se_tids, ppvObject);
  86     }
  87     else
  88     {
  89         TRACE("Unsupported interface %s\n", debugstr_guid(riid));
  90         *ppvObject = NULL;
  91         return E_NOINTERFACE;
  92     }
  93
  94     IXMLDOMText_AddRef((IUnknown*)*ppvObject);
  95     return S_OK;
  96 }
  97
  98 static ULONG WINAPI domcomment_AddRef(
  99     IXMLDOMComment *iface )
 100 {
 101     domcomment *This = impl_from_IXMLDOMComment( iface );
 102     ULONG ref = InterlockedIncrement( &This->ref );
 103     TRACE("(%p)->(%d)\n", This, ref);
 104     return ref;
 105 }
 106
 107 static ULONG WINAPI domcomment_Release(
 108     IXMLDOMComment *iface )
 109 {
 110     domcomment *This = impl_from_IXMLDOMComment( iface );
 111     ULONG ref = InterlockedDecrement( &This->ref );
 112
 113     TRACE("(%p)->(%d)\n", This, ref);
 114     if ( ref == 0 )
 115     {
 116         destroy_xmlnode(&This->node);
 117         heap_free( This );
 118     }
 119
 120     return ref;
 121 }
 122
 123 static HRESULT WINAPI domcomment_GetTypeInfoCount(
 124     IXMLDOMComment *iface,
 125     UINT* pctinfo )
 126 {
 127     domcomment *This = impl_from_IXMLDOMComment( iface );
 128     return IDispatchEx_GetTypeInfoCount(&This->node.dispex.IDispatchEx_iface, pctinfo);
 129 }
 130
 131 static HRESULT WINAPI domcomment_GetTypeInfo(
 132     IXMLDOMComment *iface,
 133     UINT iTInfo, LCID lcid,
 134     ITypeInfo** ppTInfo )
 135 {
 136     domcomment *This = impl_from_IXMLDOMComment( iface );
 137     return IDispatchEx_GetTypeInfo(&This->node.dispex.IDispatchEx_iface,
 138         iTInfo, lcid, ppTInfo);
 139 }
 140
 141 static HRESULT WINAPI domcomment_GetIDsOfNames(
 142     IXMLDOMComment *iface,
 143     REFIID riid, LPOLESTR* rgszNames,
 144     UINT cNames, LCID lcid, DISPID* rgDispId )
 145 {
 146     domcomment *This = impl_from_IXMLDOMComment( iface );
 147     return IDispatchEx_GetIDsOfNames(&This->node.dispex.IDispatchEx_iface,
 148         riid, rgszNames, cNames, lcid, rgDispId);
 149 }
 150
 151 static HRESULT WINAPI domcomment_Invoke(
 152     IXMLDOMComment *iface,
 153     DISPID dispIdMember, REFIID riid, LCID lcid,
 154     WORD wFlags, DISPPARAMS* pDispParams, VARIANT* pVarResult,
 155     EXCEPINFO* pExcepInfo, UINT* puArgErr )
 156 {
 157     domcomment *This = impl_from_IXMLDOMComment( iface );
 158     return IDispatchEx_Invoke(&This->node.dispex.IDispatchEx_iface,
 159         dispIdMember, riid, lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 160 }
 161
 162 static HRESULT WINAPI domcomment_get_nodeName(
 163     IXMLDOMComment *iface,
 164     BSTR* p )
 165 {
 166     domcomment *This = impl_from_IXMLDOMComment( iface );
 167
 168     static const WCHAR commentW[] = {'#','c','o','m','m','e','n','t',0};
 169
 170     TRACE("(%p)->(%p)\n", This, p);
 171
 172     return return_bstr(commentW, p);
 173 }
 174
 175 static HRESULT WINAPI domcomment_get_nodeValue(
 176     IXMLDOMComment *iface,
 177     VARIANT* value)
 178 {
 179     domcomment *This = impl_from_IXMLDOMComment( iface );
 180
 181     TRACE("(%p)->(%p)\n", This, value);
 182
 183     return node_get_content(&This->node, value);
 184 }
 185
 186 static HRESULT WINAPI domcomment_put_nodeValue(
 187     IXMLDOMComment *iface,
 188     VARIANT value)
 189 {
 190     domcomment *This = impl_from_IXMLDOMComment( iface );
 191
 192     TRACE("(%p)->(%s)\n", This, debugstr_variant(&value));
 193
 194     return node_put_value(&This->node, &value);
 195 }
 196
 197 static HRESULT WINAPI domcomment_get_nodeType(
 198     IXMLDOMComment *iface,
 199     DOMNodeType* domNodeType )
 200 {
 201     domcomment *This = impl_from_IXMLDOMComment( iface );
 202
 203     TRACE("(%p)->(%p)\n", This, domNodeType);
 204
 205     *domNodeType = NODE_COMMENT;
 206     return S_OK;
 207 }
 208
 209 static HRESULT WINAPI domcomment_get_parentNode(
 210     IXMLDOMComment *iface,
 211     IXMLDOMNode** parent )
 212 {
 213     domcomment *This = impl_from_IXMLDOMComment( iface );
 214
 215     TRACE("(%p)->(%p)\n", This, parent);
 216
 217     return node_get_parent(&This->node, parent);
 218 }
 219
 220 static HRESULT WINAPI domcomment_get_childNodes(
 221     IXMLDOMComment *iface,
 222     IXMLDOMNodeList** outList)
 223 {
 224     domcomment *This = impl_from_IXMLDOMComment( iface );
 225
 226     TRACE("(%p)->(%p)\n", This, outList);
 227
 228     return node_get_child_nodes(&This->node, outList);
 229 }
 230
 231 static HRESULT WINAPI domcomment_get_firstChild(
 232     IXMLDOMComment *iface,
 233     IXMLDOMNode** domNode)
 234 {
 235     domcomment *This = impl_from_IXMLDOMComment( iface );
 236
 237     TRACE("(%p)->(%p)\n", This, domNode);
 238
 239     return return_null_node(domNode);
 240 }
 241
 242 static HRESULT WINAPI domcomment_get_lastChild(
 243     IXMLDOMComment *iface,
 244     IXMLDOMNode** domNode)
 245 {
 246     domcomment *This = impl_from_IXMLDOMComment( iface );
 247
 248     TRACE("(%p)->(%p)\n", This, domNode);
 249
 250     return return_null_node(domNode);
 251 }
 252
 253 static HRESULT WINAPI domcomment_get_previousSibling(
 254     IXMLDOMComment *iface,
 255     IXMLDOMNode** domNode)
 256 {
 257     domcomment *This = impl_from_IXMLDOMComment( iface );
 258
 259     TRACE("(%p)->(%p)\n", This, domNode);
 260
 261     return node_get_previous_sibling(&This->node, domNode);
 262 }
 263
 264 static HRESULT WINAPI domcomment_get_nextSibling(
 265     IXMLDOMComment *iface,
 266     IXMLDOMNode** domNode)
 267 {
 268     domcomment *This = impl_from_IXMLDOMComment( iface );
 269
 270     TRACE("(%p)->(%p)\n", This, domNode);
 271
 272     return node_get_next_sibling(&This->node, domNode);
 273 }
 274
 275 static HRESULT WINAPI domcomment_get_attributes(
 276     IXMLDOMComment *iface,
 277     IXMLDOMNamedNodeMap** attributeMap)
 278 {
 279     domcomment *This = impl_from_IXMLDOMComment( iface );
 280
 281     TRACE("(%p)->(%p)\n", This, attributeMap);
 282
 283     return return_null_ptr((void**)attributeMap);
 284 }
 285
 286 static HRESULT WINAPI domcomment_insertBefore(
 287     IXMLDOMComment *iface,
 288     IXMLDOMNode* newNode, VARIANT refChild,
 289     IXMLDOMNode** outOldNode)
 290 {
 291     domcomment *This = impl_from_IXMLDOMComment( iface );
 292
 293     FIXME("(%p)->(%p %s %p) needs test\n", This, newNode, debugstr_variant(&refChild), outOldNode);
 294
 295     return node_insert_before(&This->node, newNode, &refChild, outOldNode);
 296 }
 297
 298 static HRESULT WINAPI domcomment_replaceChild(
 299     IXMLDOMComment *iface,
 300     IXMLDOMNode* newNode,
 301     IXMLDOMNode* oldNode,
 302     IXMLDOMNode** outOldNode)
 303 {
 304     domcomment *This = impl_from_IXMLDOMComment( iface );
 305
 306     FIXME("(%p)->(%p %p %p) needs tests\n", This, newNode, oldNode, outOldNode);
 307
 308     return node_replace_child(&This->node, newNode, oldNode, outOldNode);
 309 }
 310
 311 static HRESULT WINAPI domcomment_removeChild(
 312     IXMLDOMComment *iface,
 313     IXMLDOMNode *child, IXMLDOMNode **oldChild)
 314 {
 315     domcomment *This = impl_from_IXMLDOMComment( iface );
 316     TRACE("(%p)->(%p %p)\n", This, child, oldChild);
 317     return node_remove_child(&This->node, child, oldChild);
 318 }
 319
 320 static HRESULT WINAPI domcomment_appendChild(
 321     IXMLDOMComment *iface,
 322     IXMLDOMNode *child, IXMLDOMNode **outChild)
 323 {
 324     domcomment *This = impl_from_IXMLDOMComment( iface );
 325     TRACE("(%p)->(%p %p)\n", This, child, outChild);
 326     return node_append_child(&This->node, child, outChild);
 327 }
 328
 329 static HRESULT WINAPI domcomment_hasChildNodes(
 330     IXMLDOMComment *iface,
 331     VARIANT_BOOL *ret)
 332 {
 333     domcomment *This = impl_from_IXMLDOMComment( iface );
 334     TRACE("(%p)->(%p)\n", This, ret);
 335     return node_has_childnodes(&This->node, ret);
 336 }
 337
 338 static HRESULT WINAPI domcomment_get_ownerDocument(
 339     IXMLDOMComment   *iface,
 340     IXMLDOMDocument **doc)
 341 {
 342     domcomment *This = impl_from_IXMLDOMComment( iface );
 343     TRACE("(%p)->(%p)\n", This, doc);
 344     return node_get_owner_doc(&This->node, doc);
 345 }
 346
 347 static HRESULT WINAPI domcomment_cloneNode(
 348     IXMLDOMComment *iface,
 349     VARIANT_BOOL deep, IXMLDOMNode** outNode)
 350 {
 351     domcomment *This = impl_from_IXMLDOMComment( iface );
 352     TRACE("(%p)->(%d %p)\n", This, deep, outNode);
 353     return node_clone( &This->node, deep, outNode );
 354 }
 355
 356 static HRESULT WINAPI domcomment_get_nodeTypeString(
 357     IXMLDOMComment *iface,
 358     BSTR* p)
 359 {
 360     domcomment *This = impl_from_IXMLDOMComment( iface );
 361     static const WCHAR commentW[] = {'c','o','m','m','e','n','t',0};
 362
 363     TRACE("(%p)->(%p)\n", This, p);
 364
 365     return return_bstr(commentW, p);
 366 }
 367
 368 static HRESULT WINAPI domcomment_get_text(
 369     IXMLDOMComment *iface,
 370     BSTR* p)
 371 {
 372     domcomment *This = impl_from_IXMLDOMComment( iface );
 373     TRACE("(%p)->(%p)\n", This, p);
 374     return node_get_text(&This->node, p);
 375 }
 376
 377 static HRESULT WINAPI domcomment_put_text(
 378     IXMLDOMComment *iface,
 379     BSTR p)
 380 {
 381     domcomment *This = impl_from_IXMLDOMComment( iface );
 382     TRACE("(%p)->(%s)\n", This, debugstr_w(p));
 383     return node_put_text( &This->node, p );
 384 }
 385
 386 static HRESULT WINAPI domcomment_get_specified(
 387     IXMLDOMComment *iface,
 388     VARIANT_BOOL* isSpecified)
 389 {
 390     domcomment *This = impl_from_IXMLDOMComment( iface );
 391     FIXME("(%p)->(%p) stub!\n", This, isSpecified);
 392     *isSpecified = VARIANT_TRUE;
 393     return S_OK;
 394 }
 395
 396 static HRESULT WINAPI domcomment_get_definition(
 397     IXMLDOMComment *iface,
 398     IXMLDOMNode** definitionNode)
 399 {
 400     domcomment *This = impl_from_IXMLDOMComment( iface );
 401     FIXME("(%p)->(%p)\n", This, definitionNode);
 402     return E_NOTIMPL;
 403 }
 404
 405 static HRESULT WINAPI domcomment_get_nodeTypedValue(
 406     IXMLDOMComment *iface,
 407     VARIANT* v)
 408 {
 409     domcomment *This = impl_from_IXMLDOMComment( iface );
 410     TRACE("(%p)->(%p)\n", This, v);
 411     return node_get_content(&This->node, v);
 412 }
 413
 414 static HRESULT WINAPI domcomment_put_nodeTypedValue(
 415     IXMLDOMComment *iface,
 416     VARIANT typedValue)
 417 {
 418     domcomment *This = impl_from_IXMLDOMComment( iface );
 419     FIXME("(%p)->(%s)\n", This, debugstr_variant(&typedValue));
 420     return E_NOTIMPL;
 421 }
 422
 423 static HRESULT WINAPI domcomment_get_dataType(
 424     IXMLDOMComment *iface,
 425     VARIANT* typename)
 426 {
 427     domcomment *This = impl_from_IXMLDOMComment( iface );
 428     TRACE("(%p)->(%p)\n", This, typename);
 429     return return_null_var( typename );
 430 }
 431
 432 static HRESULT WINAPI domcomment_put_dataType(
 433     IXMLDOMComment *iface,
 434     BSTR p)
 435 {
 436     domcomment *This = impl_from_IXMLDOMComment( iface );
 437
 438     TRACE("(%p)->(%s)\n", This, debugstr_w(p));
 439
 440     if(!p)
 441         return E_INVALIDARG;
 442
 443     return E_FAIL;
 444 }
 445
 446 static HRESULT WINAPI domcomment_get_xml(
 447     IXMLDOMComment *iface,
 448     BSTR* p)
 449 {
 450     domcomment *This = impl_from_IXMLDOMComment( iface );
 451
 452     TRACE("(%p)->(%p)\n", This, p);
 453
 454     return node_get_xml(&This->node, FALSE, p);
 455 }
 456
 457 static HRESULT WINAPI domcomment_transformNode(
 458     IXMLDOMComment *iface,
 459     IXMLDOMNode *node, BSTR *p)
 460 {
 461     domcomment *This = impl_from_IXMLDOMComment( iface );
 462     TRACE("(%p)->(%p %p)\n", This, node, p);
 463     return node_transform_node(&This->node, node, p);
 464 }
 465
 466 static HRESULT WINAPI domcomment_selectNodes(
 467     IXMLDOMComment *iface,
 468     BSTR p, IXMLDOMNodeList** outList)
 469 {
 470     domcomment *This = impl_from_IXMLDOMComment( iface );
 471     TRACE("(%p)->(%s %p)\n", This, debugstr_w(p), outList);
 472     return node_select_nodes(&This->node, p, outList);
 473 }
 474
 475 static HRESULT WINAPI domcomment_selectSingleNode(
 476     IXMLDOMComment *iface,
 477     BSTR p, IXMLDOMNode** outNode)
 478 {
 479     domcomment *This = impl_from_IXMLDOMComment( iface );
 480     TRACE("(%p)->(%s %p)\n", This, debugstr_w(p), outNode);
 481     return node_select_singlenode(&This->node, p, outNode);
 482 }
 483
 484 static HRESULT WINAPI domcomment_get_parsed(
 485     IXMLDOMComment *iface,
 486     VARIANT_BOOL* isParsed)
 487 {
 488     domcomment *This = impl_from_IXMLDOMComment( iface );
 489     FIXME("(%p)->(%p) stub!\n", This, isParsed);
 490     *isParsed = VARIANT_TRUE;
 491     return S_OK;
 492 }
 493
 494 static HRESULT WINAPI domcomment_get_namespaceURI(
 495     IXMLDOMComment *iface,
 496     BSTR* p)
 497 {
 498     domcomment *This = impl_from_IXMLDOMComment( iface );
 499     TRACE("(%p)->(%p)\n", This, p);
 500     return node_get_namespaceURI(&This->node, p);
 501 }
 502
 503 static HRESULT WINAPI domcomment_get_prefix(
 504     IXMLDOMComment *iface,
 505     BSTR* prefix)
 506 {
 507     domcomment *This = impl_from_IXMLDOMComment( iface );
 508     TRACE("(%p)->(%p)\n", This, prefix);
 509     return return_null_bstr( prefix );
 510 }
 511
 512 static HRESULT WINAPI domcomment_get_baseName(
 513     IXMLDOMComment *iface,
 514     BSTR* name)
 515 {
 516     domcomment *This = impl_from_IXMLDOMComment( iface );
 517     TRACE("(%p)->(%p)\n", This, name);
 518     return return_null_bstr( name );
 519 }
 520
 521 static HRESULT WINAPI domcomment_transformNodeToObject(
 522     IXMLDOMComment *iface,
 523     IXMLDOMNode* domNode, VARIANT var1)
 524 {
 525     domcomment *This = impl_from_IXMLDOMComment( iface );
 526     FIXME("(%p)->(%p %s)\n", This, domNode, debugstr_variant(&var1));
 527     return E_NOTIMPL;
 528 }
 529
 530 static HRESULT WINAPI domcomment_get_data(
 531     IXMLDOMComment *iface,
 532     BSTR *p)
 533 {
 534     domcomment *This = impl_from_IXMLDOMComment( iface );
 535     HRESULT hr;
 536     VARIANT vRet;
 537
 538     TRACE("(%p)->(%p)\n", This, p);
 539
 540     if(!p)
 541         return E_INVALIDARG;
 542
 543     hr = IXMLDOMComment_get_nodeValue( iface, &vRet );
 544     if(hr == S_OK)
 545     {
 546         *p = V_BSTR(&vRet);
 547     }
 548
 549     return hr;
 550 }
 551
 552 static HRESULT WINAPI domcomment_put_data(
 553     IXMLDOMComment *iface,
 554     BSTR data)
 555 {
 556     domcomment *This = impl_from_IXMLDOMComment( iface );
 557     TRACE("(%p)->(%s)\n", This, debugstr_w(data));
 558     return node_set_content(&This->node, data);
 559 }
 560
 561 static HRESULT WINAPI domcomment_get_length(
 562     IXMLDOMComment *iface,
 563     LONG *len)
 564 {
 565     domcomment *This = impl_from_IXMLDOMComment( iface );
 566     HRESULT hr;
 567     BSTR data;
 568
 569     TRACE("(%p)->(%p)\n", This, len);
 570
 571     if(!len)
 572         return E_INVALIDARG;
 573
 574     hr = IXMLDOMComment_get_data(iface, &data);
 575     if(hr == S_OK)
 576     {
 577         *len = SysStringLen(data);
 578         SysFreeString(data);
 579     }
 580
 581     return hr;
 582 }
 583
 584 static HRESULT WINAPI domcomment_substringData(
 585     IXMLDOMComment *iface,
 586     LONG offset, LONG count, BSTR *p)
 587 {
 588     domcomment *This = impl_from_IXMLDOMComment( iface );
 589     HRESULT hr;
 590     BSTR data;
 591
 592     TRACE("(%p)->(%d %d %p)\n", This, offset, count, p);
 593
 594     if(!p)
 595         return E_INVALIDARG;
 596
 597     *p = NULL;
 598     if(offset < 0 || count < 0)
 599         return E_INVALIDARG;
 600
 601     if(count == 0)
 602         return S_FALSE;
 603
 604     hr = IXMLDOMComment_get_data(iface, &data);
 605     if(hr == S_OK)
 606     {
 607         LONG len = SysStringLen(data);
 608
 609         if(offset < len)
 610         {
 611             if(offset + count > len)
 612                 *p = SysAllocString(&data[offset]);
 613             else
 614                 *p = SysAllocStringLen(&data[offset], count);
 615         }
 616         else
 617             hr = S_FALSE;
 618
 619         SysFreeString(data);
 620     }
 621
 622     return hr;
 623 }
 624
 625 static HRESULT WINAPI domcomment_appendData(
 626     IXMLDOMComment *iface,
 627     BSTR p)
 628 {
 629     domcomment *This = impl_from_IXMLDOMComment( iface );
 630     HRESULT hr;
 631     BSTR data;
 632     LONG p_len;
 633
 634     TRACE("(%p)->(%s)\n", This, debugstr_w(p));
 635
 636     /* Nothing to do if NULL or an Empty string passed in. */
 637     if((p_len = SysStringLen(p)) == 0) return S_OK;
 638
 639     hr = IXMLDOMComment_get_data(iface, &data);
 640     if(hr == S_OK)
 641     {
 642         LONG len = SysStringLen(data);
 643         BSTR str = SysAllocStringLen(NULL, p_len + len);
 644
 645         memcpy(str, data, len*sizeof(WCHAR));
 646         memcpy(&str[len], p, p_len*sizeof(WCHAR));
 647         str[len+p_len] = 0;
 648
 649         hr = IXMLDOMComment_put_data(iface, str);
 650
 651         SysFreeString(str);
 652         SysFreeString(data);
 653     }
 654
 655     return hr;
 656 }
 657
 658 static HRESULT WINAPI domcomment_insertData(
 659     IXMLDOMComment *iface,
 660     LONG offset, BSTR p)
 661 {
 662     domcomment *This = impl_from_IXMLDOMComment( iface );
 663     HRESULT hr;
 664     BSTR data;
 665     LONG p_len;
 666
 667     TRACE("(%p)->(%d %s)\n", This, offset, debugstr_w(p));
 668
 669     /* If have a NULL or empty string, don't do anything. */
 670     if((p_len = SysStringLen(p)) == 0)
 671         return S_OK;
 672
 673     if(offset < 0)
 674     {
 675         return E_INVALIDARG;
 676     }
 677
 678     hr = IXMLDOMComment_get_data(iface, &data);
 679     if(hr == S_OK)
 680     {
 681         LONG len = SysStringLen(data);
 682         BSTR str;
 683
 684         if(len < offset)
 685         {
 686             SysFreeString(data);
 687             return E_INVALIDARG;
 688         }
 689
 690         str = SysAllocStringLen(NULL, len + p_len);
 691         /* start part, supplied string and end part */
 692         memcpy(str, data, offset*sizeof(WCHAR));
 693         memcpy(&str[offset], p, p_len*sizeof(WCHAR));
 694         memcpy(&str[offset+p_len], &data[offset], (len-offset)*sizeof(WCHAR));
 695         str[len+p_len] = 0;
 696
 697         hr = IXMLDOMComment_put_data(iface, str);
 698
 699         SysFreeString(str);
 700         SysFreeString(data);
 701     }
 702
 703     return hr;
 704 }
 705
 706 static HRESULT WINAPI domcomment_deleteData(
 707     IXMLDOMComment *iface,
 708     LONG offset, LONG count)
 709 {
 710     HRESULT hr;
 711     LONG len = -1;
 712     BSTR str;
 713
 714     TRACE("(%p)->(%d %d)\n", iface, offset, count);
 715
 716     hr = IXMLDOMComment_get_length(iface, &len);
 717     if(hr != S_OK) return hr;
 718
 719     if((offset < 0) || (offset > len) || (count < 0))
 720         return E_INVALIDARG;
 721
 722     if(len == 0) return S_OK;
 723
 724     /* cutting start or end */
 725     if((offset == 0) || ((count + offset) >= len))
 726     {
 727         if(offset == 0)
 728             IXMLDOMComment_substringData(iface, count, len - count, &str);
 729         else
 730             IXMLDOMComment_substringData(iface, 0, offset, &str);
 731         hr = IXMLDOMComment_put_data(iface, str);
 732     }
 733     else
 734     /* cutting from the inside */
 735     {
 736         BSTR str_end;
 737
 738         IXMLDOMComment_substringData(iface, 0, offset, &str);
 739         IXMLDOMComment_substringData(iface, offset + count, len - count, &str_end);
 740
 741         hr = IXMLDOMComment_put_data(iface, str);
 742         if(hr == S_OK)
 743             hr = IXMLDOMComment_appendData(iface, str_end);
 744
 745         SysFreeString(str_end);
 746     }
 747
 748     SysFreeString(str);
 749
 750     return hr;
 751 }
 752
 753 static HRESULT WINAPI domcomment_replaceData(
 754     IXMLDOMComment *iface,
 755     LONG offset, LONG count, BSTR p)
 756 {
 757     domcomment *This = impl_from_IXMLDOMComment( iface );
 758     HRESULT hr;
 759
 760     TRACE("(%p)->(%d %d %s)\n", This, offset, count, debugstr_w(p));
 761
 762     hr = IXMLDOMComment_deleteData(iface, offset, count);
 763
 764     if (hr == S_OK)
 765        hr = IXMLDOMComment_insertData(iface, offset, p);
 766
 767     return hr;
 768 }
 769
 770 static const struct IXMLDOMCommentVtbl domcomment_vtbl =
 771 {
 772     domcomment_QueryInterface,
 773     domcomment_AddRef,
 774     domcomment_Release,
 775     domcomment_GetTypeInfoCount,
 776     domcomment_GetTypeInfo,
 777     domcomment_GetIDsOfNames,
 778     domcomment_Invoke,
 779     domcomment_get_nodeName,
 780     domcomment_get_nodeValue,
 781     domcomment_put_nodeValue,
 782     domcomment_get_nodeType,
 783     domcomment_get_parentNode,
 784     domcomment_get_childNodes,
 785     domcomment_get_firstChild,
 786     domcomment_get_lastChild,
 787     domcomment_get_previousSibling,
 788     domcomment_get_nextSibling,
 789     domcomment_get_attributes,
 790     domcomment_insertBefore,
 791     domcomment_replaceChild,
 792     domcomment_removeChild,
 793     domcomment_appendChild,
 794     domcomment_hasChildNodes,
 795     domcomment_get_ownerDocument,
 796     domcomment_cloneNode,
 797     domcomment_get_nodeTypeString,
 798     domcomment_get_text,
 799     domcomment_put_text,
 800     domcomment_get_specified,
 801     domcomment_get_definition,
 802     domcomment_get_nodeTypedValue,
 803     domcomment_put_nodeTypedValue,
 804     domcomment_get_dataType,
 805     domcomment_put_dataType,
 806     domcomment_get_xml,
 807     domcomment_transformNode,
 808     domcomment_selectNodes,
 809     domcomment_selectSingleNode,
 810     domcomment_get_parsed,
 811     domcomment_get_namespaceURI,
 812     domcomment_get_prefix,
 813     domcomment_get_baseName,
 814     domcomment_transformNodeToObject,
 815     domcomment_get_data,
 816     domcomment_put_data,
 817     domcomment_get_length,
 818     domcomment_substringData,
 819     domcomment_appendData,
 820     domcomment_insertData,
 821     domcomment_deleteData,
 822     domcomment_replaceData
 823 };
 824
 825 static const tid_t domcomment_iface_tids[] = {
 826     IXMLDOMComment_tid,
 827     0
 828 };
 829
 830 static dispex_static_data_t domcomment_dispex = {
 831     NULL,
 832     IXMLDOMComment_tid,
 833     NULL,
 834     domcomment_iface_tids
 835 };
 836
 837 IUnknown* create_comment( xmlNodePtr comment )
 838 {
 839     domcomment *This;
 840
 841     This = heap_alloc( sizeof *This );
 842     if ( !This )
 843         return NULL;
 844
 845     This->IXMLDOMComment_iface.lpVtbl = &domcomment_vtbl;
 846     This->ref = 1;
 847
 848     init_xmlnode(&This->node, comment, (IXMLDOMNode*)&This->IXMLDOMComment_iface, &domcomment_dispex);
 849
 850     return (IUnknown*)&This->IXMLDOMComment_iface;
 851 }
 852
 853 #endif