git.oblomov.eu Git - wine/blob - dlls/msxml3/mxwriter.c

   1 /*
   2  *    MXWriter implementation
   3  *
   4  * Copyright 2011 Nikolay Sivov for CodeWeaversы
   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 #include "config.h"
  23
  24 #include <stdarg.h>
  25 #ifdef HAVE_LIBXML2
  26 # include <libxml/parser.h>
  27 #endif
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "ole2.h"
  32
  33 #include "msxml6.h"
  34
  35 #include "wine/debug.h"
  36
  37 #include "msxml_private.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(msxml);
  40
  41 #ifdef HAVE_LIBXML2
  42
  43 static const char crlfA[] = "\r\n";
  44
  45 typedef enum
  46 {
  47     MXWriter_BOM = 0,
  48     MXWriter_DisableEscaping,
  49     MXWriter_Indent,
  50     MXWriter_OmitXmlDecl,
  51     MXWriter_Standalone,
  52     MXWriter_LastProp
  53 } MXWRITER_PROPS;
  54
  55 typedef struct _mxwriter
  56 {
  57     IMXWriter IMXWriter_iface;
  58     ISAXContentHandler ISAXContentHandler_iface;
  59
  60     LONG ref;
  61
  62     VARIANT_BOOL props[MXWriter_LastProp];
  63     BSTR encoding;
  64     BSTR version;
  65
  66     IStream *dest;
  67
  68     xmlOutputBufferPtr buffer;
  69 } mxwriter;
  70
  71 static inline mxwriter *impl_from_IMXWriter(IMXWriter *iface)
  72 {
  73     return CONTAINING_RECORD(iface, mxwriter, IMXWriter_iface);
  74 }
  75
  76 static inline mxwriter *impl_from_ISAXContentHandler(ISAXContentHandler *iface)
  77 {
  78     return CONTAINING_RECORD(iface, mxwriter, ISAXContentHandler_iface);
  79 }
  80
  81 static HRESULT WINAPI mxwriter_QueryInterface(IMXWriter *iface, REFIID riid, void **obj)
  82 {
  83     mxwriter *This = impl_from_IMXWriter( iface );
  84
  85     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
  86
  87     if ( IsEqualGUID( riid, &IID_IMXWriter ) ||
  88          IsEqualGUID( riid, &IID_IDispatch ) ||
  89          IsEqualGUID( riid, &IID_IUnknown ) )
  90     {
  91         *obj = &This->IMXWriter_iface;
  92     }
  93     else if ( IsEqualGUID( riid, &IID_ISAXContentHandler ) )
  94     {
  95         *obj = &This->ISAXContentHandler_iface;
  96     }
  97     else
  98     {
  99         ERR("interface %s not implemented\n", debugstr_guid(riid));
 100         *obj = NULL;
 101         return E_NOINTERFACE;
 102     }
 103
 104     IMXWriter_AddRef(iface);
 105     return S_OK;
 106 }
 107
 108 static ULONG WINAPI mxwriter_AddRef(IMXWriter *iface)
 109 {
 110     mxwriter *This = impl_from_IMXWriter( iface );
 111     LONG ref = InterlockedIncrement(&This->ref);
 112
 113     TRACE("(%p)->(%d)\n", This, ref);
 114
 115     return ref;
 116 }
 117
 118 static ULONG WINAPI mxwriter_Release(IMXWriter *iface)
 119 {
 120     mxwriter *This = impl_from_IMXWriter( iface );
 121     ULONG ref = InterlockedDecrement(&This->ref);
 122
 123     TRACE("(%p)->(%d)\n", This, ref);
 124
 125     if(!ref)
 126     {
 127         if (This->dest) IStream_Release(This->dest);
 128         SysFreeString(This->encoding);
 129         SysFreeString(This->version);
 130
 131         xmlOutputBufferClose(This->buffer);
 132         heap_free(This);
 133     }
 134
 135     return ref;
 136 }
 137
 138 static HRESULT WINAPI mxwriter_GetTypeInfoCount(IMXWriter *iface, UINT* pctinfo)
 139 {
 140     mxwriter *This = impl_from_IMXWriter( iface );
 141
 142     TRACE("(%p)->(%p)\n", This, pctinfo);
 143
 144     *pctinfo = 1;
 145
 146     return S_OK;
 147 }
 148
 149 static HRESULT WINAPI mxwriter_GetTypeInfo(
 150     IMXWriter *iface,
 151     UINT iTInfo, LCID lcid,
 152     ITypeInfo** ppTInfo )
 153 {
 154     mxwriter *This = impl_from_IMXWriter( iface );
 155
 156     TRACE("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);
 157
 158     return get_typeinfo(IMXWriter_tid, ppTInfo);
 159 }
 160
 161 static HRESULT WINAPI mxwriter_GetIDsOfNames(
 162     IMXWriter *iface,
 163     REFIID riid, LPOLESTR* rgszNames,
 164     UINT cNames, LCID lcid, DISPID* rgDispId )
 165 {
 166     mxwriter *This = impl_from_IMXWriter( iface );
 167     ITypeInfo *typeinfo;
 168     HRESULT hr;
 169
 170     TRACE("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames,
 171           lcid, rgDispId);
 172
 173     if(!rgszNames || cNames == 0 || !rgDispId)
 174         return E_INVALIDARG;
 175
 176     hr = get_typeinfo(IMXWriter_tid, &typeinfo);
 177     if(SUCCEEDED(hr))
 178     {
 179         hr = ITypeInfo_GetIDsOfNames(typeinfo, rgszNames, cNames, rgDispId);
 180         ITypeInfo_Release(typeinfo);
 181     }
 182
 183     return hr;
 184 }
 185
 186 static HRESULT WINAPI mxwriter_Invoke(
 187     IMXWriter *iface,
 188     DISPID dispIdMember, REFIID riid, LCID lcid,
 189     WORD wFlags, DISPPARAMS* pDispParams, VARIANT* pVarResult,
 190     EXCEPINFO* pExcepInfo, UINT* puArgErr )
 191 {
 192     mxwriter *This = impl_from_IMXWriter( iface );
 193     ITypeInfo *typeinfo;
 194     HRESULT hr;
 195
 196     TRACE("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
 197           lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 198
 199     hr = get_typeinfo(IMXWriter_tid, &typeinfo);
 200     if(SUCCEEDED(hr))
 201     {
 202         hr = ITypeInfo_Invoke(typeinfo, &This->IMXWriter_iface, dispIdMember, wFlags,
 203                 pDispParams, pVarResult, pExcepInfo, puArgErr);
 204         ITypeInfo_Release(typeinfo);
 205     }
 206
 207     return hr;
 208 }
 209
 210 static HRESULT WINAPI mxwriter_put_output(IMXWriter *iface, VARIANT dest)
 211 {
 212     mxwriter *This = impl_from_IMXWriter( iface );
 213
 214     TRACE("(%p)->(%s)\n", This, debugstr_variant(&dest));
 215
 216     switch (V_VT(&dest))
 217     {
 218     case VT_EMPTY:
 219     {
 220         if (This->dest) IStream_Release(This->dest);
 221         This->dest = NULL;
 222         break;
 223     }
 224     case VT_UNKNOWN:
 225     {
 226         IStream *stream;
 227         HRESULT hr;
 228
 229         hr = IUnknown_QueryInterface(V_UNKNOWN(&dest), &IID_IStream, (void**)&stream);
 230         if (hr == S_OK)
 231         {
 232             if (This->dest) IStream_Release(This->dest);
 233             This->dest = stream;
 234             break;
 235         }
 236
 237         FIXME("unhandled interface type for VT_UNKNOWN destination\n");
 238         return E_NOTIMPL;
 239     }
 240     default:
 241         FIXME("unhandled destination type %s\n", debugstr_variant(&dest));
 242         return E_NOTIMPL;
 243     }
 244
 245     return S_OK;
 246 }
 247
 248 static HRESULT WINAPI mxwriter_get_output(IMXWriter *iface, VARIANT *dest)
 249 {
 250     mxwriter *This = impl_from_IMXWriter( iface );
 251
 252     TRACE("(%p)->(%p)\n", This, dest);
 253
 254     if (!This->dest)
 255     {
 256         V_VT(dest)   = VT_BSTR;
 257         V_BSTR(dest) = bstr_from_xmlChar(This->buffer->buffer->content);
 258
 259         return S_OK;
 260     }
 261     else
 262         FIXME("not implemented when stream is set up\n");
 263
 264     return E_NOTIMPL;
 265 }
 266
 267 static HRESULT WINAPI mxwriter_put_encoding(IMXWriter *iface, BSTR encoding)
 268 {
 269     static const WCHAR utf16W[] = {'U','T','F','-','1','6',0};
 270     static const WCHAR utf8W[]  = {'U','T','F','-','8',0};
 271     mxwriter *This = impl_from_IMXWriter( iface );
 272
 273     TRACE("(%p)->(%s)\n", This, debugstr_w(encoding));
 274
 275     /* FIXME: filter all supported encodings */
 276     if (!strcmpW(encoding, utf16W) || !strcmpW(encoding, utf8W))
 277     {
 278         SysFreeString(This->encoding);
 279         This->encoding = SysAllocString(encoding);
 280         return S_OK;
 281     }
 282     else
 283     {
 284         FIXME("unsupported encoding %s\n", debugstr_w(encoding));
 285         return E_INVALIDARG;
 286     }
 287 }
 288
 289 static HRESULT WINAPI mxwriter_get_encoding(IMXWriter *iface, BSTR *encoding)
 290 {
 291     mxwriter *This = impl_from_IMXWriter( iface );
 292
 293     TRACE("(%p)->(%p)\n", This, encoding);
 294
 295     if (!encoding) return E_POINTER;
 296
 297     return return_bstr(This->encoding, encoding);
 298 }
 299
 300 static HRESULT WINAPI mxwriter_put_byteOrderMark(IMXWriter *iface, VARIANT_BOOL value)
 301 {
 302     mxwriter *This = impl_from_IMXWriter( iface );
 303
 304     TRACE("(%p)->(%d)\n", This, value);
 305     This->props[MXWriter_BOM] = value;
 306
 307     return S_OK;
 308 }
 309
 310 static HRESULT WINAPI mxwriter_get_byteOrderMark(IMXWriter *iface, VARIANT_BOOL *value)
 311 {
 312     mxwriter *This = impl_from_IMXWriter( iface );
 313
 314     TRACE("(%p)->(%p)\n", This, value);
 315
 316     if (!value) return E_POINTER;
 317
 318     *value = This->props[MXWriter_BOM];
 319
 320     return S_OK;
 321 }
 322
 323 static HRESULT WINAPI mxwriter_put_indent(IMXWriter *iface, VARIANT_BOOL value)
 324 {
 325     mxwriter *This = impl_from_IMXWriter( iface );
 326
 327     TRACE("(%p)->(%d)\n", This, value);
 328     This->props[MXWriter_Indent] = value;
 329
 330     return S_OK;
 331 }
 332
 333 static HRESULT WINAPI mxwriter_get_indent(IMXWriter *iface, VARIANT_BOOL *value)
 334 {
 335     mxwriter *This = impl_from_IMXWriter( iface );
 336
 337     TRACE("(%p)->(%p)\n", This, value);
 338
 339     if (!value) return E_POINTER;
 340
 341     *value = This->props[MXWriter_Indent];
 342
 343     return S_OK;
 344 }
 345
 346 static HRESULT WINAPI mxwriter_put_standalone(IMXWriter *iface, VARIANT_BOOL value)
 347 {
 348     mxwriter *This = impl_from_IMXWriter( iface );
 349
 350     TRACE("(%p)->(%d)\n", This, value);
 351     This->props[MXWriter_Standalone] = value;
 352
 353     return S_OK;
 354 }
 355
 356 static HRESULT WINAPI mxwriter_get_standalone(IMXWriter *iface, VARIANT_BOOL *value)
 357 {
 358     mxwriter *This = impl_from_IMXWriter( iface );
 359
 360     TRACE("(%p)->(%p)\n", This, value);
 361
 362     if (!value) return E_POINTER;
 363
 364     *value = This->props[MXWriter_Standalone];
 365
 366     return S_OK;
 367 }
 368
 369 static HRESULT WINAPI mxwriter_put_omitXMLDeclaration(IMXWriter *iface, VARIANT_BOOL value)
 370 {
 371     mxwriter *This = impl_from_IMXWriter( iface );
 372
 373     TRACE("(%p)->(%d)\n", This, value);
 374     This->props[MXWriter_OmitXmlDecl] = value;
 375
 376     return S_OK;
 377 }
 378
 379 static HRESULT WINAPI mxwriter_get_omitXMLDeclaration(IMXWriter *iface, VARIANT_BOOL *value)
 380 {
 381     mxwriter *This = impl_from_IMXWriter( iface );
 382
 383     TRACE("(%p)->(%p)\n", This, value);
 384
 385     if (!value) return E_POINTER;
 386
 387     *value = This->props[MXWriter_OmitXmlDecl];
 388
 389     return S_OK;
 390 }
 391
 392 static HRESULT WINAPI mxwriter_put_version(IMXWriter *iface, BSTR version)
 393 {
 394     mxwriter *This = impl_from_IMXWriter( iface );
 395     FIXME("(%p)->(%s)\n", This, debugstr_w(version));
 396     return E_NOTIMPL;
 397 }
 398
 399 static HRESULT WINAPI mxwriter_get_version(IMXWriter *iface, BSTR *version)
 400 {
 401     mxwriter *This = impl_from_IMXWriter( iface );
 402
 403     TRACE("(%p)->(%p)\n", This, version);
 404
 405     if (!version) return E_POINTER;
 406
 407     return return_bstr(This->version, version);
 408 }
 409
 410 static HRESULT WINAPI mxwriter_put_disableOutputEscaping(IMXWriter *iface, VARIANT_BOOL value)
 411 {
 412     mxwriter *This = impl_from_IMXWriter( iface );
 413
 414     TRACE("(%p)->(%d)\n", This, value);
 415     This->props[MXWriter_DisableEscaping] = value;
 416
 417     return S_OK;
 418 }
 419
 420 static HRESULT WINAPI mxwriter_get_disableOutputEscaping(IMXWriter *iface, VARIANT_BOOL *value)
 421 {
 422     mxwriter *This = impl_from_IMXWriter( iface );
 423
 424     TRACE("(%p)->(%p)\n", This, value);
 425
 426     if (!value) return E_POINTER;
 427
 428     *value = This->props[MXWriter_DisableEscaping];
 429
 430     return S_OK;
 431 }
 432
 433 static HRESULT WINAPI mxwriter_flush(IMXWriter *iface)
 434 {
 435     mxwriter *This = impl_from_IMXWriter( iface );
 436     FIXME("(%p)\n", This);
 437     return E_NOTIMPL;
 438 }
 439
 440 static const struct IMXWriterVtbl mxwriter_vtbl =
 441 {
 442     mxwriter_QueryInterface,
 443     mxwriter_AddRef,
 444     mxwriter_Release,
 445     mxwriter_GetTypeInfoCount,
 446     mxwriter_GetTypeInfo,
 447     mxwriter_GetIDsOfNames,
 448     mxwriter_Invoke,
 449     mxwriter_put_output,
 450     mxwriter_get_output,
 451     mxwriter_put_encoding,
 452     mxwriter_get_encoding,
 453     mxwriter_put_byteOrderMark,
 454     mxwriter_get_byteOrderMark,
 455     mxwriter_put_indent,
 456     mxwriter_get_indent,
 457     mxwriter_put_standalone,
 458     mxwriter_get_standalone,
 459     mxwriter_put_omitXMLDeclaration,
 460     mxwriter_get_omitXMLDeclaration,
 461     mxwriter_put_version,
 462     mxwriter_get_version,
 463     mxwriter_put_disableOutputEscaping,
 464     mxwriter_get_disableOutputEscaping,
 465     mxwriter_flush
 466 };
 467
 468 /*** ISAXContentHandler ***/
 469 static HRESULT WINAPI mxwriter_saxcontent_QueryInterface(
 470     ISAXContentHandler *iface,
 471     REFIID riid,
 472     void **obj)
 473 {
 474     mxwriter *This = impl_from_ISAXContentHandler( iface );
 475     return IMXWriter_QueryInterface(&This->IMXWriter_iface, riid, obj);
 476 }
 477
 478 static ULONG WINAPI mxwriter_saxcontent_AddRef(ISAXContentHandler *iface)
 479 {
 480     mxwriter *This = impl_from_ISAXContentHandler( iface );
 481     return IMXWriter_AddRef(&This->IMXWriter_iface);
 482 }
 483
 484 static ULONG WINAPI mxwriter_saxcontent_Release(ISAXContentHandler *iface)
 485 {
 486     mxwriter *This = impl_from_ISAXContentHandler( iface );
 487     return IMXWriter_Release(&This->IMXWriter_iface);
 488 }
 489
 490 static HRESULT WINAPI mxwriter_saxcontent_putDocumentLocator(
 491     ISAXContentHandler *iface,
 492     ISAXLocator *locator)
 493 {
 494     mxwriter *This = impl_from_ISAXContentHandler( iface );
 495     FIXME("(%p)->(%p)\n", This, locator);
 496     return E_NOTIMPL;
 497 }
 498
 499 static HRESULT WINAPI mxwriter_saxcontent_startDocument(ISAXContentHandler *iface)
 500 {
 501     mxwriter *This = impl_from_ISAXContentHandler( iface );
 502     xmlChar *s;
 503
 504     TRACE("(%p)\n", This);
 505
 506     if (This->props[MXWriter_OmitXmlDecl] == VARIANT_TRUE) return S_OK;
 507
 508     /* version */
 509     xmlOutputBufferWriteString(This->buffer, "<?xml version=\"");
 510     s = xmlchar_from_wchar(This->version);
 511     xmlOutputBufferWriteString(This->buffer, (char*)s);
 512     heap_free(s);
 513     xmlOutputBufferWriteString(This->buffer, "\"");
 514
 515     /* encoding */
 516     xmlOutputBufferWriteString(This->buffer, " encoding=\"");
 517     s = xmlchar_from_wchar(This->encoding);
 518     xmlOutputBufferWriteString(This->buffer, (char*)s);
 519     heap_free(s);
 520     xmlOutputBufferWriteString(This->buffer, "\"");
 521
 522     /* standalone */
 523     xmlOutputBufferWriteString(This->buffer, " standalone=\"");
 524     if (This->props[MXWriter_Standalone] == VARIANT_TRUE)
 525         xmlOutputBufferWriteString(This->buffer, "yes\"?>");
 526     else
 527         xmlOutputBufferWriteString(This->buffer, "no\"?>");
 528
 529     xmlOutputBufferWriteString(This->buffer, crlfA);
 530
 531     return S_OK;
 532 }
 533
 534 static HRESULT WINAPI mxwriter_saxcontent_endDocument(ISAXContentHandler *iface)
 535 {
 536     mxwriter *This = impl_from_ISAXContentHandler( iface );
 537     FIXME("(%p)\n", This);
 538     return E_NOTIMPL;
 539 }
 540
 541 static HRESULT WINAPI mxwriter_saxcontent_startPrefixMapping(
 542     ISAXContentHandler *iface,
 543     const WCHAR *prefix,
 544     int nprefix,
 545     const WCHAR *uri,
 546     int nuri)
 547 {
 548     mxwriter *This = impl_from_ISAXContentHandler( iface );
 549     FIXME("(%p)->(%s %s)\n", This, debugstr_wn(prefix, nprefix), debugstr_wn(uri, nuri));
 550     return E_NOTIMPL;
 551 }
 552
 553 static HRESULT WINAPI mxwriter_saxcontent_endPrefixMapping(
 554     ISAXContentHandler *iface,
 555     const WCHAR *prefix,
 556     int nprefix)
 557 {
 558     mxwriter *This = impl_from_ISAXContentHandler( iface );
 559     FIXME("(%p)->(%s)\n", This, debugstr_wn(prefix, nprefix));
 560     return E_NOTIMPL;
 561 }
 562
 563 static HRESULT WINAPI mxwriter_saxcontent_startElement(
 564     ISAXContentHandler *iface,
 565     const WCHAR *namespaceUri,
 566     int nnamespaceUri,
 567     const WCHAR *local_name,
 568     int nlocal_name,
 569     const WCHAR *QName,
 570     int nQName,
 571     ISAXAttributes *attr)
 572 {
 573     mxwriter *This = impl_from_ISAXContentHandler( iface );
 574     xmlChar *s;
 575
 576     TRACE("(%p)->(%s %s %s %p)\n", This, debugstr_wn(namespaceUri, nnamespaceUri),
 577         debugstr_wn(local_name, nlocal_name), debugstr_wn(QName, nQName), attr);
 578
 579     if (!namespaceUri || !local_name || !QName) return E_INVALIDARG;
 580
 581     xmlOutputBufferWriteString(This->buffer, "<");
 582     s = xmlchar_from_wchar(QName);
 583     xmlOutputBufferWriteString(This->buffer, (char*)s);
 584     heap_free(s);
 585
 586     if (attr)
 587     {
 588         HRESULT hr;
 589         INT length;
 590         INT i;
 591
 592         hr = ISAXAttributes_getLength(attr, &length);
 593         if (FAILED(hr)) return hr;
 594
 595         if (length) xmlOutputBufferWriteString(This->buffer, " ");
 596
 597         for (i = 0; i < length; i++)
 598         {
 599             const WCHAR *str;
 600             INT len;
 601
 602             hr = ISAXAttributes_getQName(attr, i, &str, &len);
 603             if (FAILED(hr)) return hr;
 604
 605             s = xmlchar_from_wchar(str);
 606             xmlOutputBufferWriteString(This->buffer, (char*)s);
 607             heap_free(s);
 608
 609             xmlOutputBufferWriteString(This->buffer, "=\"");
 610
 611             hr = ISAXAttributes_getValue(attr, i, &str, &len);
 612             if (FAILED(hr)) return hr;
 613
 614             s = xmlchar_from_wchar(str);
 615             xmlOutputBufferWriteString(This->buffer, (char*)s);
 616             heap_free(s);
 617
 618             xmlOutputBufferWriteString(This->buffer, "\"");
 619         }
 620     }
 621
 622     xmlOutputBufferWriteString(This->buffer, ">");
 623
 624     return S_OK;
 625 }
 626
 627 static HRESULT WINAPI mxwriter_saxcontent_endElement(
 628     ISAXContentHandler *iface,
 629     const WCHAR *namespaceUri,
 630     int nnamespaceUri,
 631     const WCHAR * local_name,
 632     int nlocal_name,
 633     const WCHAR *QName,
 634     int nQName)
 635 {
 636     mxwriter *This = impl_from_ISAXContentHandler( iface );
 637     xmlChar *s;
 638
 639     TRACE("(%p)->(%s %s %s)\n", This, debugstr_wn(namespaceUri, nnamespaceUri),
 640         debugstr_wn(local_name, nlocal_name), debugstr_wn(QName, nQName));
 641
 642     if (!namespaceUri || !local_name || !QName) return E_INVALIDARG;
 643
 644     xmlOutputBufferWriteString(This->buffer, "</");
 645     s = xmlchar_from_wchar(QName);
 646     xmlOutputBufferWriteString(This->buffer, (char*)s);
 647     heap_free(s);
 648     xmlOutputBufferWriteString(This->buffer, ">");
 649
 650     return S_OK;
 651 }
 652
 653 static HRESULT WINAPI mxwriter_saxcontent_characters(
 654     ISAXContentHandler *iface,
 655     const WCHAR *chars,
 656     int nchars)
 657 {
 658     mxwriter *This = impl_from_ISAXContentHandler( iface );
 659
 660     TRACE("(%p)->(%s:%d)\n", This, debugstr_wn(chars, nchars), nchars);
 661
 662     if (!chars) return E_INVALIDARG;
 663
 664     if (nchars)
 665     {
 666         xmlChar *s = xmlchar_from_wcharn(chars, nchars);
 667         xmlOutputBufferWriteString(This->buffer, (char*)s);
 668         heap_free(s);
 669     }
 670
 671     return S_OK;
 672 }
 673
 674 static HRESULT WINAPI mxwriter_saxcontent_ignorableWhitespace(
 675     ISAXContentHandler *iface,
 676     const WCHAR *chars,
 677     int nchars)
 678 {
 679     mxwriter *This = impl_from_ISAXContentHandler( iface );
 680     FIXME("(%p)->(%s)\n", This, debugstr_wn(chars, nchars));
 681     return E_NOTIMPL;
 682 }
 683
 684 static HRESULT WINAPI mxwriter_saxcontent_processingInstruction(
 685     ISAXContentHandler *iface,
 686     const WCHAR *target,
 687     int ntarget,
 688     const WCHAR *data,
 689     int ndata)
 690 {
 691     mxwriter *This = impl_from_ISAXContentHandler( iface );
 692     FIXME("(%p)->(%s %s)\n", This, debugstr_wn(target, ntarget), debugstr_wn(data, ndata));
 693     return E_NOTIMPL;
 694 }
 695
 696 static HRESULT WINAPI mxwriter_saxcontent_skippedEntity(
 697     ISAXContentHandler *iface,
 698     const WCHAR *name,
 699     int nname)
 700 {
 701     mxwriter *This = impl_from_ISAXContentHandler( iface );
 702     FIXME("(%p)->(%s)\n", This, debugstr_wn(name, nname));
 703     return E_NOTIMPL;
 704 }
 705
 706 static const struct ISAXContentHandlerVtbl mxwriter_saxcontent_vtbl =
 707 {
 708     mxwriter_saxcontent_QueryInterface,
 709     mxwriter_saxcontent_AddRef,
 710     mxwriter_saxcontent_Release,
 711     mxwriter_saxcontent_putDocumentLocator,
 712     mxwriter_saxcontent_startDocument,
 713     mxwriter_saxcontent_endDocument,
 714     mxwriter_saxcontent_startPrefixMapping,
 715     mxwriter_saxcontent_endPrefixMapping,
 716     mxwriter_saxcontent_startElement,
 717     mxwriter_saxcontent_endElement,
 718     mxwriter_saxcontent_characters,
 719     mxwriter_saxcontent_ignorableWhitespace,
 720     mxwriter_saxcontent_processingInstruction,
 721     mxwriter_saxcontent_skippedEntity
 722 };
 723
 724 HRESULT MXWriter_create(IUnknown *pUnkOuter, void **ppObj)
 725 {
 726     static const WCHAR utf16W[] = {'U','T','F','-','1','6',0};
 727     static const WCHAR version10W[] = {'1','.','0',0};
 728     mxwriter *This;
 729
 730     TRACE("(%p,%p)\n", pUnkOuter, ppObj);
 731
 732     if (pUnkOuter) FIXME("support aggregation, outer\n");
 733
 734     This = heap_alloc( sizeof (*This) );
 735     if(!This)
 736         return E_OUTOFMEMORY;
 737
 738     This->IMXWriter_iface.lpVtbl = &mxwriter_vtbl;
 739     This->ISAXContentHandler_iface.lpVtbl = &mxwriter_saxcontent_vtbl;
 740     This->ref = 1;
 741
 742     This->props[MXWriter_BOM] = VARIANT_TRUE;
 743     This->props[MXWriter_DisableEscaping] = VARIANT_FALSE;
 744     This->props[MXWriter_Indent] = VARIANT_FALSE;
 745     This->props[MXWriter_OmitXmlDecl] = VARIANT_FALSE;
 746     This->props[MXWriter_Standalone] = VARIANT_FALSE;
 747     This->encoding   = SysAllocString(utf16W);
 748     This->version    = SysAllocString(version10W);
 749
 750     This->dest = NULL;
 751
 752     /* set up a buffer, default encoding is UTF-16 */
 753     This->buffer = xmlAllocOutputBuffer(xmlFindCharEncodingHandler("UTF-16"));
 754
 755     *ppObj = &This->IMXWriter_iface;
 756
 757     TRACE("returning iface %p\n", *ppObj);
 758
 759     return S_OK;
 760 }
 761
 762 #else
 763
 764 HRESULT MXWriter_create(IUnknown *pUnkOuter, void **obj)
 765 {
 766     MESSAGE("This program tried to use a MXXMLWriter object, but\n"
 767             "libxml2 support was not present at compile time.\n");
 768     return E_NOTIMPL;
 769 }
 770
 771 #endif /* HAVE_LIBXML2 */