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 WINE_DEFAULT_DEBUG_CHANNEL(msxml);
  56
  57 #ifdef HAVE_LIBXML2
  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         release_dispex(&This->dispex);
 181         heap_free(This);
 182     }
 183
 184     return ref;
 185 }
 186
 187 static HRESULT WINAPI domselection_GetTypeInfoCount(
 188     IXMLDOMSelection *iface,
 189     UINT* pctinfo )
 190 {
 191     domselection *This = impl_from_IXMLDOMSelection( iface );
 192     return IDispatchEx_GetTypeInfoCount(&This->dispex.IDispatchEx_iface, pctinfo);
 193 }
 194
 195 static HRESULT WINAPI domselection_GetTypeInfo(
 196     IXMLDOMSelection *iface,
 197     UINT iTInfo,
 198     LCID lcid,
 199     ITypeInfo** ppTInfo )
 200 {
 201     domselection *This = impl_from_IXMLDOMSelection( iface );
 202     return IDispatchEx_GetTypeInfo(&This->dispex.IDispatchEx_iface,
 203         iTInfo, lcid, ppTInfo);
 204 }
 205
 206 static HRESULT WINAPI domselection_GetIDsOfNames(
 207     IXMLDOMSelection *iface,
 208     REFIID riid,
 209     LPOLESTR* rgszNames,
 210     UINT cNames,
 211     LCID lcid,
 212     DISPID* rgDispId )
 213 {
 214     domselection *This = impl_from_IXMLDOMSelection( iface );
 215     return IDispatchEx_GetIDsOfNames(&This->dispex.IDispatchEx_iface,
 216         riid, rgszNames, cNames, lcid, rgDispId);
 217 }
 218
 219 static HRESULT WINAPI domselection_Invoke(
 220     IXMLDOMSelection *iface,
 221     DISPID dispIdMember,
 222     REFIID riid,
 223     LCID lcid,
 224     WORD wFlags,
 225     DISPPARAMS* pDispParams,
 226     VARIANT* pVarResult,
 227     EXCEPINFO* pExcepInfo,
 228     UINT* puArgErr )
 229 {
 230     domselection *This = impl_from_IXMLDOMSelection( iface );
 231     return IDispatchEx_Invoke(&This->dispex.IDispatchEx_iface,
 232         dispIdMember, riid, lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 233 }
 234
 235 static HRESULT WINAPI domselection_get_item(
 236         IXMLDOMSelection* iface,
 237         LONG index,
 238         IXMLDOMNode** listItem)
 239 {
 240     domselection *This = impl_from_IXMLDOMSelection( iface );
 241
 242     TRACE("(%p)->(%d %p)\n", This, index, listItem);
 243
 244     if(!listItem)
 245         return E_INVALIDARG;
 246
 247     *listItem = NULL;
 248
 249     if (index < 0 || index >= xmlXPathNodeSetGetLength(This->result->nodesetval))
 250         return S_FALSE;
 251
 252     *listItem = create_node(xmlXPathNodeSetItem(This->result->nodesetval, index));
 253     This->resultPos = index + 1;
 254
 255     return S_OK;
 256 }
 257
 258 static HRESULT WINAPI domselection_get_length(
 259         IXMLDOMSelection* iface,
 260         LONG* listLength)
 261 {
 262     domselection *This = impl_from_IXMLDOMSelection( iface );
 263
 264     TRACE("(%p)->(%p)\n", This, listLength);
 265
 266     if(!listLength)
 267         return E_INVALIDARG;
 268
 269     *listLength = xmlXPathNodeSetGetLength(This->result->nodesetval);
 270     return S_OK;
 271 }
 272
 273 static HRESULT WINAPI domselection_nextNode(
 274         IXMLDOMSelection* iface,
 275         IXMLDOMNode** nextItem)
 276 {
 277     domselection *This = impl_from_IXMLDOMSelection( iface );
 278
 279     TRACE("(%p)->(%p)\n", This, nextItem );
 280
 281     if(!nextItem)
 282         return E_INVALIDARG;
 283
 284     *nextItem = NULL;
 285
 286     if (This->resultPos >= xmlXPathNodeSetGetLength(This->result->nodesetval))
 287         return S_FALSE;
 288
 289     *nextItem = create_node(xmlXPathNodeSetItem(This->result->nodesetval, This->resultPos));
 290     This->resultPos++;
 291     return S_OK;
 292 }
 293
 294 static HRESULT WINAPI domselection_reset(
 295         IXMLDOMSelection* iface)
 296 {
 297     domselection *This = impl_from_IXMLDOMSelection( iface );
 298
 299     TRACE("%p\n", This);
 300     This->resultPos = 0;
 301     return S_OK;
 302 }
 303
 304 static HRESULT WINAPI domselection_get__newEnum(
 305         IXMLDOMSelection* iface,
 306         IUnknown** enumv)
 307 {
 308     domselection *This = impl_from_IXMLDOMSelection( iface );
 309
 310     TRACE("(%p)->(%p)\n", This, enumv);
 311
 312     return create_enumvariant((IUnknown*)iface, TRUE, &selection_enumvariant, (IEnumVARIANT**)enumv);
 313 }
 314
 315 static HRESULT WINAPI domselection_get_expr(
 316         IXMLDOMSelection* iface,
 317         BSTR *p)
 318 {
 319     domselection *This = impl_from_IXMLDOMSelection( iface );
 320     FIXME("(%p)->(%p)\n", This, p);
 321     return E_NOTIMPL;
 322 }
 323
 324 static HRESULT WINAPI domselection_put_expr(
 325         IXMLDOMSelection* iface,
 326         BSTR p)
 327 {
 328     domselection *This = impl_from_IXMLDOMSelection( iface );
 329     FIXME("(%p)->(%s)\n", This, debugstr_w(p));
 330     return E_NOTIMPL;
 331 }
 332
 333 static HRESULT WINAPI domselection_get_context(
 334         IXMLDOMSelection* iface,
 335         IXMLDOMNode **node)
 336 {
 337     domselection *This = impl_from_IXMLDOMSelection( iface );
 338     FIXME("(%p)->(%p)\n", This, node);
 339     return E_NOTIMPL;
 340 }
 341
 342 static HRESULT WINAPI domselection_putref_context(
 343         IXMLDOMSelection* iface,
 344         IXMLDOMNode *node)
 345 {
 346     domselection *This = impl_from_IXMLDOMSelection( iface );
 347     FIXME("(%p)->(%p)\n", This, node);
 348     return E_NOTIMPL;
 349 }
 350
 351 static HRESULT WINAPI domselection_peekNode(
 352         IXMLDOMSelection* iface,
 353         IXMLDOMNode **node)
 354 {
 355     domselection *This = impl_from_IXMLDOMSelection( iface );
 356     FIXME("(%p)->(%p)\n", This, node);
 357     return E_NOTIMPL;
 358 }
 359
 360 static HRESULT WINAPI domselection_matches(
 361         IXMLDOMSelection* iface,
 362         IXMLDOMNode *node,
 363         IXMLDOMNode **out_node)
 364 {
 365     domselection *This = impl_from_IXMLDOMSelection( iface );
 366     FIXME("(%p)->(%p %p)\n", This, node, out_node);
 367     return E_NOTIMPL;
 368 }
 369
 370 static HRESULT WINAPI domselection_removeNext(
 371         IXMLDOMSelection* iface,
 372         IXMLDOMNode **node)
 373 {
 374     domselection *This = impl_from_IXMLDOMSelection( iface );
 375     FIXME("(%p)->(%p)\n", This, node);
 376     return E_NOTIMPL;
 377 }
 378
 379 static HRESULT WINAPI domselection_removeAll(
 380         IXMLDOMSelection* iface)
 381 {
 382     domselection *This = impl_from_IXMLDOMSelection( iface );
 383     FIXME("(%p)\n", This);
 384     return E_NOTIMPL;
 385 }
 386
 387 static HRESULT WINAPI domselection_clone(
 388         IXMLDOMSelection* iface,
 389         IXMLDOMSelection **node)
 390 {
 391     domselection *This = impl_from_IXMLDOMSelection( iface );
 392     FIXME("(%p)->(%p)\n", This, node);
 393     return E_NOTIMPL;
 394 }
 395
 396 static HRESULT WINAPI domselection_getProperty(
 397         IXMLDOMSelection* iface,
 398         BSTR p,
 399         VARIANT *var)
 400 {
 401     domselection *This = impl_from_IXMLDOMSelection( iface );
 402     FIXME("(%p)->(%s %p)\n", This, debugstr_w(p), var);
 403     return E_NOTIMPL;
 404 }
 405
 406 static HRESULT WINAPI domselection_setProperty(
 407         IXMLDOMSelection* iface,
 408         BSTR p,
 409         VARIANT var)
 410 {
 411     domselection *This = impl_from_IXMLDOMSelection( iface );
 412     FIXME("(%p)->(%s %s)\n", This, debugstr_w(p), debugstr_variant(&var));
 413     return E_NOTIMPL;
 414 }
 415
 416 static const struct IXMLDOMSelectionVtbl domselection_vtbl =
 417 {
 418     domselection_QueryInterface,
 419     domselection_AddRef,
 420     domselection_Release,
 421     domselection_GetTypeInfoCount,
 422     domselection_GetTypeInfo,
 423     domselection_GetIDsOfNames,
 424     domselection_Invoke,
 425     domselection_get_item,
 426     domselection_get_length,
 427     domselection_nextNode,
 428     domselection_reset,
 429     domselection_get__newEnum,
 430     domselection_get_expr,
 431     domselection_put_expr,
 432     domselection_get_context,
 433     domselection_putref_context,
 434     domselection_peekNode,
 435     domselection_matches,
 436     domselection_removeNext,
 437     domselection_removeAll,
 438     domselection_clone,
 439     domselection_getProperty,
 440     domselection_setProperty
 441 };
 442
 443 /* IEnumVARIANT support */
 444 static HRESULT WINAPI enumvariant_QueryInterface(
 445     IEnumVARIANT *iface,
 446     REFIID riid,
 447     void** ppvObject )
 448 {
 449     enumvariant *This = impl_from_IEnumVARIANT( iface );
 450
 451     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppvObject);
 452
 453     *ppvObject = NULL;
 454
 455     if (IsEqualGUID( riid, &IID_IUnknown ))
 456     {
 457         if (This->own)
 458             *ppvObject = &This->IEnumVARIANT_iface;
 459         else
 460             return IUnknown_QueryInterface(This->outer, riid, ppvObject);
 461     }
 462     else if (IsEqualGUID( riid, &IID_IEnumVARIANT ))
 463     {
 464         *ppvObject = &This->IEnumVARIANT_iface;
 465     }
 466     else
 467         return IUnknown_QueryInterface(This->outer, riid, ppvObject);
 468
 469     IEnumVARIANT_AddRef( iface );
 470
 471     return S_OK;
 472 }
 473
 474 static ULONG WINAPI enumvariant_AddRef(IEnumVARIANT *iface )
 475 {
 476     enumvariant *This = impl_from_IEnumVARIANT( iface );
 477     ULONG ref = InterlockedIncrement( &This->ref );
 478     TRACE("(%p)->(%d)\n", This, ref);
 479     return ref;
 480 }
 481
 482 static ULONG WINAPI enumvariant_Release(IEnumVARIANT *iface )
 483 {
 484     enumvariant *This = impl_from_IEnumVARIANT( iface );
 485     ULONG ref = InterlockedDecrement(&This->ref);
 486
 487     TRACE("(%p)->(%d)\n", This, ref);
 488     if ( ref == 0 )
 489     {
 490         if (This->own) IUnknown_Release(This->outer);
 491         heap_free(This);
 492     }
 493
 494     return ref;
 495 }
 496
 497 static HRESULT WINAPI enumvariant_Next(
 498     IEnumVARIANT *iface,
 499     ULONG celt,
 500     VARIANT *var,
 501     ULONG *fetched)
 502 {
 503     enumvariant *This = impl_from_IEnumVARIANT( iface );
 504     ULONG ret_count = 0;
 505
 506     TRACE("(%p)->(%u %p %p)\n", This, celt, var, fetched);
 507
 508     if (fetched) *fetched = 0;
 509
 510     if (celt && !var) return E_INVALIDARG;
 511
 512     for (; celt > 0; celt--, var++, This->pos++)
 513     {
 514         HRESULT hr = This->funcs->get_item(This->outer, This->pos, var);
 515         if (hr != S_OK)
 516         {
 517             V_VT(var) = VT_EMPTY;
 518             break;
 519         }
 520         ret_count++;
 521     }
 522
 523     if (fetched) (*fetched)++;
 524
 525     /* we need to advance one step more for some reason */
 526     if (ret_count)
 527     {
 528         if (This->funcs->next)
 529             This->funcs->next(This->outer);
 530     }
 531
 532     return celt == 0 ? S_OK : S_FALSE;
 533 }
 534
 535 static HRESULT WINAPI enumvariant_Skip(
 536     IEnumVARIANT *iface,
 537     ULONG celt)
 538 {
 539     enumvariant *This = impl_from_IEnumVARIANT( iface );
 540     FIXME("(%p)->(%u): stub\n", This, celt);
 541     return E_NOTIMPL;
 542 }
 543
 544 static HRESULT WINAPI enumvariant_Reset(IEnumVARIANT *iface)
 545 {
 546     enumvariant *This = impl_from_IEnumVARIANT( iface );
 547     FIXME("(%p): stub\n", This);
 548     return E_NOTIMPL;
 549 }
 550
 551 static HRESULT WINAPI enumvariant_Clone(
 552     IEnumVARIANT *iface, IEnumVARIANT **ppenum)
 553 {
 554     enumvariant *This = impl_from_IEnumVARIANT( iface );
 555     FIXME("(%p)->(%p): stub\n", This, ppenum);
 556     return E_NOTIMPL;
 557 }
 558
 559 static const struct IEnumVARIANTVtbl EnumVARIANTVtbl =
 560 {
 561     enumvariant_QueryInterface,
 562     enumvariant_AddRef,
 563     enumvariant_Release,
 564     enumvariant_Next,
 565     enumvariant_Skip,
 566     enumvariant_Reset,
 567     enumvariant_Clone
 568 };
 569
 570 HRESULT create_enumvariant(IUnknown *outer, BOOL own, const struct enumvariant_funcs *funcs, IEnumVARIANT **penum)
 571 {
 572     enumvariant *This;
 573
 574     This = heap_alloc(sizeof(enumvariant));
 575     if (!This) return E_OUTOFMEMORY;
 576
 577     This->IEnumVARIANT_iface.lpVtbl = &EnumVARIANTVtbl;
 578     This->ref = 0;
 579     This->outer = outer;
 580     This->own = own;
 581     This->pos = 0;
 582     This->funcs = funcs;
 583
 584     if (This->own)
 585         IUnknown_AddRef(This->outer);
 586
 587     *penum = &This->IEnumVARIANT_iface;
 588     IEnumVARIANT_AddRef(*penum);
 589     return S_OK;
 590 }
 591
 592 static HRESULT domselection_get_dispid(IUnknown *iface, BSTR name, DWORD flags, DISPID *dispid)
 593 {
 594     WCHAR *ptr;
 595     int idx = 0;
 596
 597     for(ptr = name; *ptr && isdigitW(*ptr); ptr++)
 598         idx = idx*10 + (*ptr-'0');
 599     if(*ptr)
 600         return DISP_E_UNKNOWNNAME;
 601
 602     *dispid = DISPID_DOM_COLLECTION_BASE + idx;
 603     TRACE("ret %x\n", *dispid);
 604     return S_OK;
 605 }
 606
 607 static HRESULT domselection_invoke(IUnknown *iface, DISPID id, LCID lcid, WORD flags, DISPPARAMS *params,
 608         VARIANT *res, EXCEPINFO *ei)
 609 {
 610     domselection *This = impl_from_IXMLDOMSelection( (IXMLDOMSelection*)iface );
 611
 612     TRACE("(%p)->(%x %x %x %p %p %p)\n", This, id, lcid, flags, params, res, ei);
 613
 614     V_VT(res) = VT_DISPATCH;
 615     V_DISPATCH(res) = NULL;
 616
 617     if (id < DISPID_DOM_COLLECTION_BASE || id > DISPID_DOM_COLLECTION_MAX)
 618         return DISP_E_UNKNOWNNAME;
 619
 620     switch(flags)
 621     {
 622         case INVOKE_PROPERTYGET:
 623         {
 624             IXMLDOMNode *disp = NULL;
 625
 626             IXMLDOMSelection_get_item(&This->IXMLDOMSelection_iface, id - DISPID_DOM_COLLECTION_BASE, &disp);
 627             V_DISPATCH(res) = (IDispatch*)disp;
 628             break;
 629         }
 630         default:
 631         {
 632             FIXME("unimplemented flags %x\n", flags);
 633             break;
 634         }
 635     }
 636
 637     TRACE("ret %p\n", V_DISPATCH(res));
 638
 639     return S_OK;
 640 }
 641
 642 static const dispex_static_data_vtbl_t domselection_dispex_vtbl = {
 643     domselection_get_dispid,
 644     domselection_invoke
 645 };
 646
 647 static const tid_t domselection_iface_tids[] = {
 648     IXMLDOMSelection_tid,
 649     0
 650 };
 651 static dispex_static_data_t domselection_dispex = {
 652     &domselection_dispex_vtbl,
 653     IXMLDOMSelection_tid,
 654     NULL,
 655     domselection_iface_tids
 656 };
 657
 658 #define XSLPATTERN_CHECK_ARGS(n) \
 659     if (nargs != n) { \
 660         FIXME("XSLPattern syntax error: Expected %i arguments, got %i\n", n, nargs); \
 661         xmlXPathSetArityError(pctx); \
 662         return; \
 663     }
 664
 665
 666 static void XSLPattern_index(xmlXPathParserContextPtr pctx, int nargs)
 667 {
 668     XSLPATTERN_CHECK_ARGS(0);
 669
 670     xmlXPathPositionFunction(pctx, 0);
 671     xmlXPathReturnNumber(pctx, xmlXPathPopNumber(pctx) - 1.0);
 672 }
 673
 674 static void XSLPattern_end(xmlXPathParserContextPtr pctx, int nargs)
 675 {
 676     double pos, last;
 677     XSLPATTERN_CHECK_ARGS(0);
 678
 679     xmlXPathPositionFunction(pctx, 0);
 680     pos = xmlXPathPopNumber(pctx);
 681     xmlXPathLastFunction(pctx, 0);
 682     last = xmlXPathPopNumber(pctx);
 683     xmlXPathReturnBoolean(pctx, pos == last);
 684 }
 685
 686 static void XSLPattern_nodeType(xmlXPathParserContextPtr pctx, int nargs)
 687 {
 688     XSLPATTERN_CHECK_ARGS(0);
 689     xmlXPathReturnNumber(pctx, pctx->context->node->type);
 690 }
 691
 692 static void XSLPattern_OP_IEq(xmlXPathParserContextPtr pctx, int nargs)
 693 {
 694     xmlChar *arg1, *arg2;
 695     XSLPATTERN_CHECK_ARGS(2);
 696
 697     arg2 = xmlXPathPopString(pctx);
 698     arg1 = xmlXPathPopString(pctx);
 699     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) == 0);
 700     xmlFree(arg1);
 701     xmlFree(arg2);
 702 }
 703
 704 static void XSLPattern_OP_INEq(xmlXPathParserContextPtr pctx, int nargs)
 705 {
 706     xmlChar *arg1, *arg2;
 707     XSLPATTERN_CHECK_ARGS(2);
 708
 709     arg2 = xmlXPathPopString(pctx);
 710     arg1 = xmlXPathPopString(pctx);
 711     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) != 0);
 712     xmlFree(arg1);
 713     xmlFree(arg2);
 714 }
 715
 716 static void XSLPattern_OP_ILt(xmlXPathParserContextPtr pctx, int nargs)
 717 {
 718     xmlChar *arg1, *arg2;
 719     XSLPATTERN_CHECK_ARGS(2);
 720
 721     arg2 = xmlXPathPopString(pctx);
 722     arg1 = xmlXPathPopString(pctx);
 723     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) < 0);
 724     xmlFree(arg1);
 725     xmlFree(arg2);
 726 }
 727
 728 static void XSLPattern_OP_ILEq(xmlXPathParserContextPtr pctx, int nargs)
 729 {
 730     xmlChar *arg1, *arg2;
 731     XSLPATTERN_CHECK_ARGS(2);
 732
 733     arg2 = xmlXPathPopString(pctx);
 734     arg1 = xmlXPathPopString(pctx);
 735     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) <= 0);
 736     xmlFree(arg1);
 737     xmlFree(arg2);
 738 }
 739
 740 static void XSLPattern_OP_IGt(xmlXPathParserContextPtr pctx, int nargs)
 741 {
 742     xmlChar *arg1, *arg2;
 743     XSLPATTERN_CHECK_ARGS(2);
 744
 745     arg2 = xmlXPathPopString(pctx);
 746     arg1 = xmlXPathPopString(pctx);
 747     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) > 0);
 748     xmlFree(arg1);
 749     xmlFree(arg2);
 750 }
 751
 752 static void XSLPattern_OP_IGEq(xmlXPathParserContextPtr pctx, int nargs)
 753 {
 754     xmlChar *arg1, *arg2;
 755     XSLPATTERN_CHECK_ARGS(2);
 756
 757     arg2 = xmlXPathPopString(pctx);
 758     arg1 = xmlXPathPopString(pctx);
 759     xmlXPathReturnBoolean(pctx, xmlStrcasecmp(arg1, arg2) >= 0);
 760     xmlFree(arg1);
 761     xmlFree(arg2);
 762 }
 763
 764 static void query_serror(void* ctx, xmlErrorPtr err)
 765 {
 766     LIBXML2_CALLBACK_SERROR(domselection_create, err);
 767 }
 768
 769 HRESULT create_selection(xmlNodePtr node, xmlChar* query, IXMLDOMNodeList **out)
 770 {
 771     domselection *This = heap_alloc(sizeof(domselection));
 772     xmlXPathContextPtr ctxt = xmlXPathNewContext(node->doc);
 773     HRESULT hr;
 774
 775     TRACE("(%p, %s, %p)\n", node, debugstr_a((char const*)query), out);
 776
 777     *out = NULL;
 778     if (!This || !ctxt || !query)
 779     {
 780         xmlXPathFreeContext(ctxt);
 781         heap_free(This);
 782         return E_OUTOFMEMORY;
 783     }
 784
 785     This->IXMLDOMSelection_iface.lpVtbl = &domselection_vtbl;
 786     This->ref = 1;
 787     This->resultPos = 0;
 788     This->node = node;
 789     This->enumvariant = NULL;
 790     init_dispex(&This->dispex, (IUnknown*)&This->IXMLDOMSelection_iface, &domselection_dispex);
 791     xmldoc_add_ref(This->node->doc);
 792
 793     ctxt->error = query_serror;
 794     ctxt->node = node;
 795     registerNamespaces(ctxt);
 796
 797     if (is_xpathmode(This->node->doc))
 798     {
 799         xmlXPathRegisterAllFunctions(ctxt);
 800         This->result = xmlXPathEvalExpression(query, ctxt);
 801     }
 802     else
 803     {
 804         xmlChar* pattern_query = XSLPattern_to_XPath(ctxt, query);
 805
 806         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"not", xmlXPathNotFunction);
 807         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"boolean", xmlXPathBooleanFunction);
 808
 809         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"index", XSLPattern_index);
 810         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"end", XSLPattern_end);
 811         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"nodeType", XSLPattern_nodeType);
 812
 813         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IEq", XSLPattern_OP_IEq);
 814         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_INEq", XSLPattern_OP_INEq);
 815         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_ILt", XSLPattern_OP_ILt);
 816         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_ILEq", XSLPattern_OP_ILEq);
 817         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IGt", XSLPattern_OP_IGt);
 818         xmlXPathRegisterFunc(ctxt, (xmlChar const*)"OP_IGEq", XSLPattern_OP_IGEq);
 819
 820         This->result = xmlXPathEvalExpression(pattern_query, ctxt);
 821         xmlFree(pattern_query);
 822     }
 823
 824     if (!This->result || This->result->type != XPATH_NODESET)
 825     {
 826         hr = E_FAIL;
 827         goto cleanup;
 828     }
 829
 830     *out = (IXMLDOMNodeList*)&This->IXMLDOMSelection_iface;
 831     hr = S_OK;
 832     TRACE("found %d matches\n", xmlXPathNodeSetGetLength(This->result->nodesetval));
 833
 834 cleanup:
 835     if (This && FAILED(hr))
 836         IXMLDOMSelection_Release( &This->IXMLDOMSelection_iface );
 837     xmlXPathFreeContext(ctxt);
 838     return hr;
 839 }
 840
 841 #endif