dlls/msxml3/selection.c

   1 /*
   2  *    XPath/XSLPattern query result node list implementation
   3  *
   4  * Copyright 2005 Mike McCormack
   5  * Copyright 2007 Mikolaj Zalewski
   6  * Copyright 2010 Adam Martinson for CodeWeavers
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #define COBJMACROS
  24
  25 #include "config.h"
  26
  27 #include <stdarg.h>
  28 #ifdef HAVE_LIBXML2
  29 # include <libxml/parser.h>
  30 # include <libxml/xmlerror.h>
  31 # include <libxml/xpath.h>
  32 # include <libxml/xpathInternals.h>
  33 #endif
  34
  35 #include "windef.h"
  36 #include "winbase.h"
  37 #include "winuser.h"
  38 #include "ole2.h"
  39 #include "msxml6.h"
  40 #include "msxml2did.h"
  41
  42 #include "msxml_private.h"
  43
  44 #include "wine/debug.h"
  45
  46 /* This file implements the object returned by a XPath query. Note that this is
  47  * not the IXMLDOMNodeList returned by childNodes - it's implemented in nodelist.c.
  48  * They are different because the list returned by XPath queries:
  49  *  - is static - gives the results for the XML tree as it existed during the
  50  *    execution of the query
  51  *  - supports IXMLDOMSelection
  52  *
  53  */
  54
  55 #ifdef HAVE_LIBXML2
  56
  57 WINE_DEFAULT_DEBUG_CHANNEL(msxml);
  58
  59 int registerNamespaces(xmlXPathContextPtr ctxt);
  60 xmlChar* XSLPattern_to_XPath(xmlXPathContextPtr ctxt, xmlChar const* xslpat_str);
  61
  62 typedef struct
  63 {
  64     IEnumVARIANT IEnumVARIANT_iface;
  65     LONG ref;
  66
  67     IUnknown *outer;
  68     BOOL own;
  69
  70     LONG pos;
  71
  72     const struct enumvariant_funcs *funcs;
  73 } enumvariant;
  74
  75 typedef struct
  76 {
  77     DispatchEx dispex;
  78     IXMLDOMSelection IXMLDOMSelection_iface;
  79     LONG ref;
  80     xmlNodePtr node;
  81     xmlXPathObjectPtr result;
  82     int resultPos;
  83     IEnumVARIANT *enumvariant;
  84 } domselection;
  85
  86 static HRESULT selection_get_item(IUnknown *iface, LONG index, VARIANT* item)
  87 {
  88     V_VT(item) = VT_DISPATCH;
  89     return IXMLDOMSelection_get_item((IXMLDOMSelection*)iface, index, (IXMLDOMNode**)&V_DISPATCH(item));
  90 }
  91
  92 static HRESULT selection_next(IUnknown *iface)
  93 {
  94     IXMLDOMNode *node;
  95     HRESULT hr = IXMLDOMSelection_nextNode((IXMLDOMSelection*)iface, &node);
  96     if (hr == S_OK) IXMLDOMNode_Release(node);
  97     return hr;
  98 }
  99
 100 static const struct enumvariant_funcs selection_enumvariant = {
 101     selection_get_item,
 102     selection_next
 103 };
 104
 105 static inline domselection *impl_from_IXMLDOMSelection( IXMLDOMSelection *iface )
 106 {
 107     return CONTAINING_RECORD(iface, domselection, IXMLDOMSelection_iface);
 108 }
 109
 110 static inline enumvariant *impl_from_IEnumVARIANT( IEnumVARIANT *iface )
 111 {
 112     return CONTAINING_RECORD(iface, enumvariant, IEnumVARIANT_iface);
 113 }
 114
 115 static HRESULT WINAPI domselection_QueryInterface(
 116     IXMLDOMSelection *iface,
 117     REFIID riid,
 118     void** ppvObject )
 119 {
 120     domselection *This = impl_from_IXMLDOMSelection( iface );
 121
 122     TRACE("(%p)->(%s %p)\n", iface, debugstr_guid(riid), ppvObject);
 123
 124     if(!ppvObject)
 125         return E_INVALIDARG;
 126
 127     if ( IsEqualGUID( riid, &IID_IUnknown ) ||
 128          IsEqualGUID( riid, &IID_IXMLDOMNodeList ) ||
 129          IsEqualGUID( riid, &IID_IXMLDOMSelection ))
 130     {
 131         *ppvObject = &This->IXMLDOMSelection_iface;
 132     }
 133     else if (IsEqualGUID( riid, &IID_IEnumVARIANT ))
 134     {
 135         if (!This->enumvariant)
 136         {
 137             HRESULT hr = create_enumvariant((IUnknown*)iface, FALSE, &selection_enumvariant, &This->enumvariant);
 138             if (FAILED(hr)) return hr;
 139         }
 140
 141         return IEnumVARIANT_QueryInterface(This->enumvariant, &IID_IEnumVARIANT, ppvObject);
 142     }
 143     else if (dispex_query_interface(&This->dispex, riid, ppvObject))
 144     {
 145         return *ppvObject ? S_OK : E_NOINTERFACE;
 146     }
 147     else
 148     {
 149         TRACE("interface %s not implemented\n", debugstr_guid(riid));
 150         *ppvObject = NULL;
 151         return E_NOINTERFACE;
 152     }
 153
 154     IXMLDOMSelection_AddRef( iface );
 155
 156     return S_OK;
 157 }
 158
 159 static ULONG WINAPI domselection_AddRef(
 160     IXMLDOMSelection *iface )
 161 {
 162     domselection *This = impl_from_IXMLDOMSelection( iface );
 163     ULONG ref = InterlockedIncrement( &This->ref );
 164     TRACE("(%p)->(%d)\n", This, ref);
 165     return ref;
 166 }
 167
 168 static ULONG WINAPI domselection_Release(
 169     IXMLDOMSelection *iface )
 170 {
 171     domselection *This = impl_from_IXMLDOMSelection( iface );
 172     ULONG ref = InterlockedDecrement(&This->ref);
 173
 174     TRACE("(%p)->(%d)\n", This, ref);
 175     if ( ref == 0 )
 176     {
 177         xmlXPathFreeObject(This->result);
 178         xmldoc_release(This->node->doc);
 179         if (This->enumvariant) IEnumVARIANT_Release(This->enumvariant);
 180         heap_free(This);
 181     }
 182
 183     return ref;
 184 }
 185
 186 static HRESULT WINAPI domselection_GetTypeInfoCount(
 187     IXMLDOMSelection *iface,
 188     UINT* pctinfo )
 189 {
 190     domselection *This = impl_from_IXMLDOMSelection( iface );
 191     return IDispatchEx_GetTypeInfoCount(&This->dispex.IDispatchEx_iface, pctinfo);
 192 }
 193
 194 static HRESULT WINAPI domselection_GetTypeInfo(
 195     IXMLDOMSelection *iface,
 196     UINT iTInfo,
 197     LCID lcid,
 198     ITypeInfo** ppTInfo )
 199 {
 200     domselection *This = impl_from_IXMLDOMSelection( iface );
 201     return IDispatchEx_GetTypeInfo(&This->dispex.IDispatchEx_iface,
 202         iTInfo, lcid, ppTInfo);
 203 }
 204
 205 static HRESULT WINAPI domselection_GetIDsOfNames(
 206     IXMLDOMSelection *iface,
 207     REFIID riid,
 208     LPOLESTR* rgszNames,
 209     UINT cNames,
 210     LCID lcid,
 211     DISPID* rgDispId )
 212 {
 213     domselection *This = impl_from_IXMLDOMSelection( iface );
 214     return IDispatchEx_GetIDsOfNames(&This->dispex.IDispatchEx_iface,
 215         riid, rgszNames, cNames, lcid, rgDispId);
 216 }
 217
 218 static HRESULT WINAPI domselection_Invoke(
 219     IXMLDOMSelection *iface,
 220     DISPID dispIdMember,
 221     REFIID riid,
 222     LCID lcid,
 223     WORD wFlags,
 224     DISPPARAMS* pDispParams,
 225     VARIANT* pVarResult,
 226     EXCEPINFO* pExcepInfo,
 227     UINT* puArgErr )
 228 {
 229     domselection *This = impl_from_IXMLDOMSelection( iface );
 230     return IDispatchEx_Invoke(&This->dispex.IDispatchEx_iface,
 231         dispIdMember, riid, lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 232 }
 233
 234 static HRESULT WINAPI domselection_get_item(
 235         IXMLDOMSelection* iface,
 236         LONG index,
 237         IXMLDOMNode** listItem)
 238 {
 239     domselection *This = impl_from_IXMLDOMSelection( iface );
 240
 241     TRACE("(%p)->(%d %p)\n", This, index, listItem);
 242
 243     if(!listItem)
 244         return E_INVALIDARG;
 245
 246     *listItem = NULL;
 247
 248     if (index < 0 || index >= xmlXPathNodeSetGetLength(This->result->nodesetval))
 249         return S_FALSE;
 250
 251     *listItem = create_node(xmlXPathNodeSetItem(This->result->nodesetval, index));
 252     This->resultPos = index + 1;
 253
 254     return S_OK;
 255 }
 256
 257 static HRESULT WINAPI domselection_get_length(
 258         IXMLDOMSelection* iface,
 259         LONG* listLength)
 260 {
 261     domselection *This = impl_from_IXMLDOMSelection( iface );
 262
 263     TRACE("(%p)->(%p)\n", This, listLength);
 264
 265     if(!listLength)
 266         return E_INVALIDARG;
 267
 268     *listLength = xmlXPathNodeSetGetLength(This->result->nodesetval);
 269     return S_OK;
 270 }
 271
 272 static HRESULT WINAPI domselection_nextNode(
 273         IXMLDOMSelection* iface,
 274         IXMLDOMNode** nextItem)
 275 {
 276     domselection *This = impl_from_IXMLDOMSelection( iface );
 277
 278     TRACE("(%p)->(%p)\n", This, nextItem );
 279
 280     if(!nextItem)
 281         return E_INVALIDARG;
 282
 283     *nextItem = NULL;
 284
 285     if (This->resultPos >= xmlXPathNodeSetGetLength(This->result->nodesetval))
 286         return S_FALSE;
 287
 288     *nextItem = create_node(xmlXPathNodeSetItem(This->result->nodesetval, This->resultPos));
 289     This->resultPos++;
 290     return S_OK;
 291 }
 292
 293 static HRESULT WINAPI domselection_reset(
 294         IXMLDOMSelection* iface)
 295 {
 296     domselection *This = impl_from_IXMLDOMSelection( iface );
 297
 298     TRACE("%p\n", This);
 299     This->resultPos = 0;
 300     return S_OK;
 301 }
 302
 303 static HRESULT WINAPI domselection_get__newEnum(
 304         IXMLDOMSelection* iface,
 305         IUnknown** enumv)
 306 {
 307     domselection *This = impl_from_IXMLDOMSelection( iface );
 308
 309     TRACE("(%p)->(%p)\n", This, enumv);
 310
 311     return create_enumvariant((IUnknown*)iface, TRUE, &selection_enumvariant, (IEnumVARIANT**)enumv);
 312 }
 313
 314 static HRESULT WINAPI domselection_get_expr(
 315         IXMLDOMSelection* iface,
 316         BSTR *p)
 317 {
 318     domselection *This = impl_from_IXMLDOMSelection( iface );
 319     FIXME("(%p)->(%p)\n", This, p);
 320     return E_NOTIMPL;
 321 }
 322
 323 static HRESULT WINAPI domselection_put_expr(
 324         IXMLDOMSelection* iface,
 325         BSTR p)
 326 {
 327     domselection *This = impl_from_IXMLDOMSelection( iface );
 328     FIXME("(%p)->(%s)\n", This, debugstr_w(p));
 329     return E_NOTIMPL;
 330 }
 331
 332 static HRESULT WINAPI domselection_get_context(
 333         IXMLDOMSelection* iface,
 334         IXMLDOMNode **node)
 335 {
 336     domselection *This = impl_from_IXMLDOMSelection( iface );
 337     FIXME("(%p)->(%p)\n", This, node);
 338     return E_NOTIMPL;
 339 }
 340
 341 static HRESULT WINAPI domselection_putref_context(
 342         IXMLDOMSelection* iface,
 343         IXMLDOMNode *node)
 344 {
 345     domselection *This = impl_from_IXMLDOMSelection( iface );
 346     FIXME("(%p)->(%p)\n", This, node);
 347     return E_NOTIMPL;
 348 }
 349
 350 static HRESULT WINAPI domselection_peekNode(
 351         IXMLDOMSelection* iface,
 352         IXMLDOMNode **node)
 353 {
 354     domselection *This = impl_from_IXMLDOMSelection( iface );
 355     FIXME("(%p)->(%p)\n", This, node);
 356     return E_NOTIMPL;
 357 }
 358
 359 static HRESULT WINAPI domselection_matches(
 360         IXMLDOMSelection* iface,
 361         IXMLDOMNode *node,
 362         IXMLDOMNode **out_node)
 363 {
 364     domselection *This = impl_from_IXMLDOMSelection( iface );
 365     FIXME("(%p)->(%p %p)\n", This, node, out_node);
 366     return E_NOTIMPL;
 367 }
 368
 369 static HRESULT WINAPI domselection_removeNext(
 370         IXMLDOMSelection* iface,
 371         IXMLDOMNode **node)
 372 {
 373     domselection *This = impl_from_IXMLDOMSelection( iface );
 374     FIXME("(%p)->(%p)\n", This, node);
 375     return E_NOTIMPL;
 376 }
 377
 378 static HRESULT WINAPI domselection_removeAll(
 379         IXMLDOMSelection* iface)
 380 {
 381     domselection *This = impl_from_IXMLDOMSelection( iface );
 382     FIXME("(%p)\n", This);
 383     return E_NOTIMPL;
 384 }
 385
 386 static HRESULT WINAPI domselection_clone(
 387         IXMLDOMSelection* iface,
 388         IXMLDOMSelection **node)
 389 {
 390     domselection *This = impl_from_IXMLDOMSelection( iface );
 391     FIXME("(%p)->(%p)\n", This, node);
 392     return E_NOTIMPL;
 393 }
 394
 395 static HRESULT WINAPI domselection_getProperty(
 396         IXMLDOMSelection* iface,
 397         BSTR p,
 398         VARIANT *var)
 399 {
 400     domselection *This = impl_from_IXMLDOMSelection( iface );
 401     FIXME("(%p)->(%s %p)\n", This, debugstr_w(p), var);
 402     return E_NOTIMPL;
 403 }
 404
 405 static HRESULT WINAPI domselection_setProperty(
 406         IXMLDOMSelection* iface,
 407         BSTR p,
 408         VARIANT var)
 409 {
 410     domselection *This = impl_from_IXMLDOMSelection( iface );
 411     FIXME("(%p)->(%s %s)\n", This, debugstr_w(p), debugstr_variant(&var));
 412     return E_NOTIMPL;
 413 }
 414
 415 static const struct IXMLDOMSelectionVtbl domselection_vtbl =
 416 {
 417     domselection_QueryInterface,
 418     domselection_AddRef,
 419     domselection_Release,
 420     domselection_GetTypeInfoCount,
 421     domselection_GetTypeInfo,
 422     domselection_GetIDsOfNames,
 423     domselection_Invoke,
 424     domselection_get_item,
 425     domselection_get_length,
 426     domselection_nextNode,
 427     domselection_reset,
 428     domselection_get__newEnum,
 429     domselection_get_expr,
 430     domselection_put_expr,
 431     domselection_get_context,
 432     domselection_putref_context,
 433     domselection_peekNode,
 434     domselection_matches,
 435     domselection_removeNext,
 436     domselection_removeAll,
 437     domselection_clone,
 438     domselection_getProperty,
 439     domselection_setProperty
 440 };
 441
 442 /* IEnumVARIANT support */
 443 static HRESULT WINAPI enumvariant_QueryInterface(
 444     IEnumVARIANT *iface,
 445     REFIID riid,
 446     void** ppvObject )
 447 {
 448     enumvariant *This = impl_from_IEnumVARIANT( iface );
 449
 450     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppvObject);
 451
 452     *ppvObject = NULL;
 453
 454     if (IsEqualGUID( riid, &IID_IUnknown ))
 455     {
 456         if (This->own)
 457             *ppvObject = &This->IEnumVARIANT_iface;
 458         else
 459             return IUnknown_QueryInterface(This->outer, riid, ppvObject);
 460     }
 461     else if (IsEqualGUID( riid, &IID_IEnumVARIANT ))
 462     {
 463         *ppvObject = &This->IEnumVARIANT_iface;
 464     }
 465     else
 466         return IUnknown_QueryInterface(This->outer, riid, ppvObject);
 467
 468     IEnumVARIANT_AddRef( iface );
 469
 470     return S_OK;
 471 }
 472
 473 static ULONG WINAPI enumvariant_AddRef(IEnumVARIANT *iface )
 474 {
 475     enumvariant *This = impl_from_IEnumVARIANT( iface );
 476     ULONG ref = InterlockedIncrement( &This->ref );
 477     TRACE("(%p)->(%d)\n", This, ref);
 478     return ref;
 479 }
 480
 481 static ULONG WINAPI enumvariant_Release(IEnumVARIANT *iface )
 482 {
 483     enumvariant *This = impl_from_IEnumVARIANT( iface );
 484     ULONG ref = InterlockedDecrement(&This->ref);
 485
 486     TRACE("(%p)->(%d)\n", This, ref);
 487     if ( ref == 0 )
 488     {
 489         if (This->own) IUnknown_Release(This->outer);
 490         heap_free(This);
 491     }
 492
 493     return ref;
 494 }
 495
 496 static HRESULT WINAPI enumvariant_Next(
 497     IEnumVARIANT *iface,
 498     ULONG celt,
 499     VARIANT *var,
 500     ULONG *fetched)
 501 {
 502     enumvariant *This = impl_from_IEnumVARIANT( iface );
 503     ULONG ret_count = 0;
 504
 505     TRACE("(%p)->(%u %p %p)\n", This, celt, var, fetched);
 506
 507     if (fetched) *fetched = 0;
 508
 509     if (celt && !var) return E_INVALIDARG;
 510
 511     for (; celt > 0; celt--, var++, This->pos++)
 512     {
 513         HRESULT hr = This->funcs->get_item(This->outer, This->pos, var);
 514         if (hr != S_OK)
 515         {
 516             V_VT(var) = VT_EMPTY;
 517             break;
 518         }
 519         ret_count++;
 520     }
 521
 522     if (fetched) (*fetched)++;
 523
 524     /* we need to advance one step more for some reason */
 525     if (ret_count)
 526     {
 527         if (This->funcs->next)
 528             This->funcs->next(This->outer);
 529     }
 530
 531     return celt == 0 ? S_OK : S_FALSE;
 532 }
 533
 534 static HRESULT WINAPI enumvariant_Skip(
 535     IEnumVARIANT *iface,
 536     ULONG celt)
 537 {
 538     enumvariant *This = impl_from_IEnumVARIANT( iface );
 539     FIXME("(%p)->(%u): stub\n", This, celt);
 540     return E_NOTIMPL;
 541 }
 542
 543 static HRESULT WINAPI enumvariant_Reset(IEnumVARIANT *iface)
 544 {
 545     enumvariant *This = impl_from_IEnumVARIANT( iface );
 546     FIXME("(%p): stub\n", This);
 547     return E_NOTIMPL;
 548 }
 549
 550 static HRESULT WINAPI enumvariant_Clone(
 551     IEnumVARIANT *iface, IEnumVARIANT **ppenum)
 552 {
 553     enumvariant *This = impl_from_IEnumVARIANT( iface );
 554     FIXME("(%p)->(%p): stub\n", This, ppenum);
 555     return E_NOTIMPL;
 556 }
 557
 558 static const struct IEnumVARIANTVtbl EnumVARIANTVtbl =
 559 {
 560     enumvariant_QueryInterface,
 561     enumvariant_AddRef,
 562     enumvariant_Release,
 563     enumvariant_Next,
 564     enumvariant_Skip,
 565     enumvariant_Reset,
 566     enumvariant_Clone
 567 };
 568
 569 HRESULT create_enumvariant(IUnknown *outer, BOOL own, const struct enumvariant_funcs *funcs, IEnumVARIANT **penum)
 570 {
 571     enumvariant *This;
 572
 573     This = heap_alloc(sizeof(enumvariant));
 574     if (!This) return E_OUTOFMEMORY;
 575
 576     This->IEnumVARIANT_iface.lpVtbl = &EnumVARIANTVtbl;
 577     This->ref = 0;
 578     This->outer = outer;
 579     This->own = own;
 580     This->pos = 0;
 581     This->funcs = funcs;
 582
 583     if (This->own)
 584         IUnknown_AddRef(This->outer);
 585
 586     *penum = &This->IEnumVARIANT_iface;
 587     IEnumVARIANT_AddRef(*penum);
 588     return S_OK;
 589 }
 590
 591 static HRESULT domselection_get_dispid(IUnknown *iface, BSTR name, DWORD flags, DISPID *dispid)
 592 {
 593     WCHAR *ptr;
 594     int idx = 0;
 595
 596     for(ptr = name; *ptr && isdigitW(*ptr); ptr++)
 597         idx = idx*10 + (*ptr-'0');
 598     if(*ptr)
 599         return DISP_E_UNKNOWNNAME;
 600
 601     *dispid = DISPID_DOM_COLLECTION_BASE + idx;
 602     TRACE("ret %x\n", *dispid);
 603     return S_OK;
 604 }
 605
 606 static HRESULT domselection_invoke(IUnknown *iface, DISPID id, LCID lcid, WORD flags, DISPPARAMS *params,
 607         VARIANT *res, EXCEPINFO *ei)
 608 {
 609     domselection *This = impl_from_IXMLDOMSelection( (IXMLDOMSelection*)iface );
 610
 611     TRACE("(%p)->(%x %x %x %p %p %p)\n", This, id, lcid, flags, params, res, ei);
 612
 613     V_VT(res) = VT_DISPATCH;
 614     V_DISPATCH(res) = NULL;
 615
 616     if (id < DISPID_DOM_COLLECTION_BASE || id > DISPID_DOM_COLLECTION_MAX)
 617         return DISP_E_UNKNOWNNAME;
 618
 619     switch(flags)
 620     {
 621         case INVOKE_PROPERTYGET:
 622         {
 623             IXMLDOMNode *disp = NULL;
 624
 625             IXMLDOMSelection_get_item(&This->IXMLDOMSelection_iface, id - DISPID_DOM_COLLECTION_BASE, &disp);
 626             V_DISPATCH(res) = (IDispatch*)disp;
 627             break;
 628         }
 629         default:
 630         {
 631             FIXME("unimplemented flags %x\n", flags);
 632             break;
 633         }
 634     }
 635
 636     TRACE("ret %p\n", V_DISPATCH(res));
 637
 638     return S_OK;
 639 }
 640
 641 static const dispex_static_data_vtbl_t domselection_dispex_vtbl = {
 642     domselection_get_dispid,
 643     domselection_invoke
 644 };
 645
 646 static const tid_t domselection_iface_tids[] = {
 647     IXMLDOMSelection_tid,
 648     0
 649 };
 650 static dispex_static_data_t domselection_dispex = {
 651     &domselection_dispex_vtbl,
 652     IXMLDOMSelection_tid,
 653     NULL,
 654     domselection_iface_tids
 655 };
 656
 657 #define XSLPATTERN_CHECK_ARGS(n) \
 658     if (nargs != n) { \
 659         FIXME("XSLPattern syntax error: Expected %i arguments, got %i\n", n, nargs); \
 660         xmlXPathSetArityError(pctx); \
 661         return; \
 662     }
 663
 664
 665 static void XSLPattern_index(xmlXPathParserContextPtr pctx, int nargs)
 666 {
 667     XSLPATTERN_CHECK_ARGS(0);
 668
 669     xmlXPathPositionFunction(pctx, 0);
 670     xmlXPathReturnNumber(pctx, xmlXPathPopNumber(pctx) - 1.0);
 671 }
 672
 673 static void XSLPattern_end(xmlXPathParserContextPtr pctx, int nargs)
 674 {
 675     double pos, last;
 676     XSLPATTERN_CHECK_ARGS(0);
 677
 678     xmlXPathPositionFunction(pctx, 0);
 679     pos = xmlXPathPopNumber(pctx);
 680     xmlXPathLastFunction(pctx, 0);
 681     last = xmlXPathPopNumber(pctx);
 682     xmlXPathReturnBoolean(pctx, pos == last);
 683 }
 684
 685 static void XSLPattern_nodeType(xmlXPathParserContextPtr pctx, int nargs)
 686 {
 687     XSLPATTERN_CHECK_ARGS(0);
 688     xmlXPathReturnNumber(pctx, pctx->context->node->type);
 689 }
 690
 691 static void XSLPattern_OP_IEq(xmlXPathParserContextPtr pctx, int nargs)
 692 {
 693     xmlChar *arg1, *arg2;
 694     XSLPATTERN_CHECK_ARGS(2);
 695
 696     arg2 = xmlXPathPopString(pctx);
 697     arg1 = xmlXPathPopString(pctx);
 698     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) == 0);
 699     xmlFree(arg1);
 700     xmlFree(arg2);
 701 }
 702
 703 static void XSLPattern_OP_INEq(xmlXPathParserContextPtr pctx, int nargs)
 704 {
 705     xmlChar *arg1, *arg2;
 706     XSLPATTERN_CHECK_ARGS(2);
 707
 708     arg2 = xmlXPathPopString(pctx);
 709     arg1 = xmlXPathPopString(pctx);
 710     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) != 0);
 711     xmlFree(arg1);
 712     xmlFree(arg2);
 713 }
 714
 715 static void XSLPattern_OP_ILt(xmlXPathParserContextPtr pctx, int nargs)
 716 {
 717     xmlChar *arg1, *arg2;
 718     XSLPATTERN_CHECK_ARGS(2);
 719
 720     arg2 = xmlXPathPopString(pctx);
 721     arg1 = xmlXPathPopString(pctx);
 722     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) < 0);
 723     xmlFree(arg1);
 724     xmlFree(arg2);
 725 }
 726
 727 static void XSLPattern_OP_ILEq(xmlXPathParserContextPtr pctx, int nargs)
 728 {
 729     xmlChar *arg1, *arg2;
 730     XSLPATTERN_CHECK_ARGS(2);
 731
 732     arg2 = xmlXPathPopString(pctx);
 733     arg1 = xmlXPathPopString(pctx);
 734     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) <= 0);
 735     xmlFree(arg1);
 736     xmlFree(arg2);
 737 }
 738
 739 static void XSLPattern_OP_IGt(xmlXPathParserContextPtr pctx, int nargs)
 740 {
 741     xmlChar *arg1, *arg2;
 742     XSLPATTERN_CHECK_ARGS(2);
 743
 744     arg2 = xmlXPathPopString(pctx);
 745     arg1 = xmlXPathPopString(pctx);
 746     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) > 0);
 747     xmlFree(arg1);
 748     xmlFree(arg2);
 749 }
 750
 751 static void XSLPattern_OP_IGEq(xmlXPathParserContextPtr pctx, int nargs)
 752 {
 753     xmlChar *arg1, *arg2;
 754     XSLPATTERN_CHECK_ARGS(2);
 755
 756     arg2 = xmlXPathPopString(pctx);
 757     arg1 = xmlXPathPopString(pctx);
 758     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) >= 0);
 759     xmlFree(arg1);
 760     xmlFree(arg2);
 761 }
 762
 763 static void query_serror(void* ctx, xmlErrorPtr err)
 764 {
 765     LIBXML2_CALLBACK_SERROR(domselection_create, err);
 766 }
 767
 768 HRESULT create_selection(xmlNodePtr node, xmlChar* query, IXMLDOMNodeList **out)
 769 {
 770     domselection *This = heap_alloc(sizeof(domselection));
 771     xmlXPathContextPtr ctxt = xmlXPathNewContext(node->doc);
 772     HRESULT hr;
 773
 774     TRACE("(%p, %s, %p)\n", node, debugstr_a((char const*)query), out);
 775
 776     *out = NULL;
 777     if (!This || !ctxt || !query)
 778     {
 779         xmlXPathFreeContext(ctxt);
 780         heap_free(This);
 781         return E_OUTOFMEMORY;
 782     }
 783
 784     This->IXMLDOMSelection_iface.lpVtbl = &domselection_vtbl;
 785     This->ref = 1;
 786     This->resultPos = 0;
 787     This->node = node;
 788     This->enumvariant = NULL;
 789     init_dispex(&This->dispex, (IUnknown*)&This->IXMLDOMSelection_iface, &domselection_dispex);
 790     xmldoc_add_ref(This->node->doc);
 791
 792     ctxt->error = query_serror;
 793     ctxt->node = node;
 794     registerNamespaces(ctxt);
 795
 796     if (is_xpathmode(This->node->doc))
 797     {
 798         xmlXPathRegisterAllFunctions(ctxt);
 799         This->result = xmlXPathEvalExpression(query, ctxt);
 800     }
 801     else
 802     {
 803         xmlChar* pattern_query = XSLPattern_to_XPath(ctxt, query);
 804
 805         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"not", xmlXPathNotFunction);
 806         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"boolean", xmlXPathBooleanFunction);
 807
 808         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"index", XSLPattern_index);
 809         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"end", XSLPattern_end);
 810         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"nodeType", XSLPattern_nodeType);
 811
 812         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IEq", XSLPattern_OP_IEq);
 813         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_INEq", XSLPattern_OP_INEq);
 814         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_ILt", XSLPattern_OP_ILt);
 815         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_ILEq", XSLPattern_OP_ILEq);
 816         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IGt", XSLPattern_OP_IGt);
 817         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IGEq", XSLPattern_OP_IGEq);
 818
 819         This->result = xmlXPathEvalExpression(pattern_query, ctxt);
 820         xmlFree(pattern_query);
 821     }
 822
 823     if (!This->result || This->result->type != XPATH_NODESET)
 824     {
 825         hr = E_FAIL;
 826         goto cleanup;
 827     }
 828
 829     *out = (IXMLDOMNodeList*)&This->IXMLDOMSelection_iface;
 830     hr = S_OK;
 831     TRACE("found %d matches\n", xmlXPathNodeSetGetLength(This->result->nodesetval));
 832
 833 cleanup:
 834     if (This && FAILED(hr))
 835         IXMLDOMSelection_Release( &This->IXMLDOMSelection_iface );
 836     xmlXPathFreeContext(ctxt);
 837     return hr;
 838 }
 839
 840 #endif