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   1 /*
   2  *    MXWriter implementation
   3  *
   4  * Copyright 2011 Nikolay Sivov for CodeWeavers
   5  * Copyright 2011 Thomas Mullaly
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #define COBJMACROS
  23 #include "config.h"
  24
  25 #include <stdarg.h>
  26 #ifdef HAVE_LIBXML2
  27 # include <libxml/parser.h>
  28 #endif
  29
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "ole2.h"
  33
  34 #include "msxml6.h"
  35
  36 #include "wine/debug.h"
  37
  38 #include "msxml_private.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(msxml);
  41
  42 #ifdef HAVE_LIBXML2
  43
  44 static const WCHAR utf16W[] = {'U','T','F','-','1','6',0};
  45 static const WCHAR emptyW[] = {0};
  46
  47 typedef enum
  48 {
  49     XmlEncoding_UTF8,
  50     XmlEncoding_UTF16,
  51     XmlEncoding_Unknown
  52 } xml_encoding;
  53
  54 typedef enum
  55 {
  56     OutputBuffer_Native  = 0x001,
  57     OutputBuffer_Encoded = 0x010,
  58     OutputBuffer_Both    = 0x100
  59 } output_mode;
  60
  61 typedef enum
  62 {
  63     MXWriter_BOM = 0,
  64     MXWriter_DisableEscaping,
  65     MXWriter_Indent,
  66     MXWriter_OmitXmlDecl,
  67     MXWriter_Standalone,
  68     MXWriter_LastProp
  69 } mxwriter_prop;
  70
  71 typedef struct
  72 {
  73     char *data;
  74     unsigned int allocated;
  75     unsigned int written;
  76 } encoded_buffer;
  77
  78 typedef struct
  79 {
  80     encoded_buffer utf16;
  81     encoded_buffer encoded;
  82     UINT code_page;
  83 } output_buffer;
  84
  85 typedef struct
  86 {
  87     DispatchEx dispex;
  88     IMXWriter IMXWriter_iface;
  89     ISAXContentHandler ISAXContentHandler_iface;
  90
  91     LONG ref;
  92     MSXML_VERSION class_version;
  93
  94     VARIANT_BOOL props[MXWriter_LastProp];
  95     BOOL prop_changed;
  96
  97     BSTR version;
  98
  99     BSTR encoding; /* exact property value */
 100     xml_encoding xml_enc;
 101
 102     /* contains a pending (or not closed yet) element name or NULL if
 103        we don't have to close */
 104     BSTR element;
 105
 106     IStream *dest;
 107     ULONG dest_written;
 108
 109     output_buffer *buffer;
 110 } mxwriter;
 111
 112 static xml_encoding parse_encoding_name(const WCHAR *encoding)
 113 {
 114     static const WCHAR utf8W[]  = {'U','T','F','-','8',0};
 115     if (!strcmpiW(encoding, utf8W))  return XmlEncoding_UTF8;
 116     if (!strcmpiW(encoding, utf16W)) return XmlEncoding_UTF16;
 117     return XmlEncoding_Unknown;
 118 }
 119
 120 static HRESULT init_encoded_buffer(encoded_buffer *buffer)
 121 {
 122     const int initial_len = 0x2000;
 123     buffer->data = heap_alloc(initial_len);
 124     if (!buffer->data) return E_OUTOFMEMORY;
 125
 126     memset(buffer->data, 0, 4);
 127     buffer->allocated = initial_len;
 128     buffer->written = 0;
 129
 130     return S_OK;
 131 }
 132
 133 static void free_encoded_buffer(encoded_buffer *buffer)
 134 {
 135     heap_free(buffer->data);
 136 }
 137
 138 static HRESULT get_code_page(xml_encoding encoding, UINT *cp)
 139 {
 140     switch (encoding)
 141     {
 142     case XmlEncoding_UTF8:
 143         *cp = CP_UTF8;
 144         break;
 145     case XmlEncoding_UTF16:
 146         *cp = ~0;
 147         break;
 148     default:
 149         FIXME("unsupported encoding %d\n", encoding);
 150         return E_NOTIMPL;
 151     }
 152
 153     return S_OK;
 154 }
 155
 156 static HRESULT alloc_output_buffer(xml_encoding encoding, output_buffer **buffer)
 157 {
 158     output_buffer *ret;
 159     HRESULT hr;
 160
 161     ret = heap_alloc(sizeof(*ret));
 162     if (!ret) return E_OUTOFMEMORY;
 163
 164     hr = get_code_page(encoding, &ret->code_page);
 165     if (hr != S_OK) {
 166         heap_free(ret);
 167         return hr;
 168     }
 169
 170     hr = init_encoded_buffer(&ret->utf16);
 171     if (hr != S_OK) {
 172         heap_free(ret);
 173         return hr;
 174     }
 175
 176     if (ret->code_page == CP_UTF8) {
 177         hr = init_encoded_buffer(&ret->encoded);
 178         if (hr != S_OK) {
 179             free_encoded_buffer(&ret->utf16);
 180             heap_free(ret);
 181             return hr;
 182         }
 183     }
 184     else
 185         memset(&ret->encoded, 0, sizeof(ret->encoded));
 186
 187     *buffer = ret;
 188
 189     return S_OK;
 190 }
 191
 192 static void free_output_buffer(output_buffer *buffer)
 193 {
 194     free_encoded_buffer(&buffer->encoded);
 195     free_encoded_buffer(&buffer->utf16);
 196     heap_free(buffer);
 197 }
 198
 199 static void grow_buffer(encoded_buffer *buffer, int length)
 200 {
 201     /* grow if needed, plus 4 bytes to be sure null terminator will fit in */
 202     if (buffer->allocated < buffer->written + length + 4)
 203     {
 204         int grown_size = max(2*buffer->allocated, buffer->allocated + length);
 205         buffer->data = heap_realloc(buffer->data, grown_size);
 206         buffer->allocated = grown_size;
 207     }
 208 }
 209
 210 static HRESULT write_output_buffer_mode(output_buffer *buffer, output_mode mode, const WCHAR *data, int len)
 211 {
 212     int length;
 213     char *ptr;
 214
 215     if (mode & (OutputBuffer_Encoded | OutputBuffer_Both)) {
 216         if (buffer->code_page == CP_UTF8)
 217         {
 218             length = WideCharToMultiByte(buffer->code_page, 0, data, len, NULL, 0, NULL, NULL);
 219             grow_buffer(&buffer->encoded, length);
 220             ptr = buffer->encoded.data + buffer->encoded.written;
 221             length = WideCharToMultiByte(buffer->code_page, 0, data, len, ptr, length, NULL, NULL);
 222             buffer->encoded.written += len == -1 ? length-1 : length;
 223         }
 224     }
 225
 226     if (mode & (OutputBuffer_Native | OutputBuffer_Both)) {
 227         /* WCHAR data just copied */
 228         length = len == -1 ? strlenW(data) : len;
 229         if (length)
 230         {
 231             length *= sizeof(WCHAR);
 232
 233             grow_buffer(&buffer->utf16, length);
 234             ptr = buffer->utf16.data + buffer->utf16.written;
 235
 236             memcpy(ptr, data, length);
 237             buffer->utf16.written += length;
 238             ptr += length;
 239             /* null termination */
 240             memset(ptr, 0, sizeof(WCHAR));
 241         }
 242     }
 243
 244     return S_OK;
 245 }
 246
 247 static HRESULT write_output_buffer(output_buffer *buffer, const WCHAR *data, int len)
 248 {
 249     return write_output_buffer_mode(buffer, OutputBuffer_Both, data, len);
 250 }
 251
 252 /* frees buffer data, reallocates with a default lengths */
 253 static void close_output_buffer(mxwriter *This)
 254 {
 255     heap_free(This->buffer->utf16.data);
 256     heap_free(This->buffer->encoded.data);
 257     init_encoded_buffer(&This->buffer->utf16);
 258     init_encoded_buffer(&This->buffer->encoded);
 259     get_code_page(This->xml_enc, &This->buffer->code_page);
 260 }
 261
 262 /* escapes special characters like:
 263    '<' -> "&lt;"
 264    '&' -> "&amp;"
 265    '"' -> "&quot;"
 266    '>' -> "&gt;"
 267 */
 268 static WCHAR *get_escaped_string(const WCHAR *str, int *len)
 269 {
 270     static const WCHAR ltW[]   = {'&','l','t',';'};
 271     static const WCHAR ampW[]  = {'&','a','m','p',';'};
 272     static const WCHAR quotW[] = {'&','q','u','o','t',';'};
 273     static const WCHAR gtW[]   = {'&','g','t',';'};
 274
 275     const int default_alloc = 100;
 276     const int grow_thresh = 10;
 277     int p = *len, conv_len;
 278     WCHAR *ptr, *ret;
 279
 280     /* default buffer size to something if length is unknown */
 281     conv_len = *len == -1 ? default_alloc : max(2**len, default_alloc);
 282     ptr = ret = heap_alloc(conv_len*sizeof(WCHAR));
 283
 284     while (*str && p)
 285     {
 286         if (ptr - ret > conv_len - grow_thresh)
 287         {
 288             int written = ptr - ret;
 289             conv_len *= 2;
 290             ptr = ret = heap_realloc(ret, conv_len*sizeof(WCHAR));
 291             ptr += written;
 292         }
 293
 294         switch (*str)
 295         {
 296         case '<':
 297             memcpy(ptr, ltW, sizeof(ltW));
 298             ptr += sizeof(ltW)/sizeof(WCHAR);
 299             break;
 300         case '&':
 301             memcpy(ptr, ampW, sizeof(ampW));
 302             ptr += sizeof(ampW)/sizeof(WCHAR);
 303             break;
 304         case '"':
 305             memcpy(ptr, quotW, sizeof(quotW));
 306             ptr += sizeof(quotW)/sizeof(WCHAR);
 307             break;
 308         case '>':
 309             memcpy(ptr, gtW, sizeof(gtW));
 310             ptr += sizeof(gtW)/sizeof(WCHAR);
 311             break;
 312         default:
 313             *ptr++ = *str;
 314             break;
 315         }
 316
 317         str++;
 318         if (*len != -1) p--;
 319     }
 320
 321     if (*len != -1) *len = ptr-ret;
 322     *++ptr = 0;
 323
 324     return ret;
 325 }
 326
 327 static void write_prolog_buffer(const mxwriter *This)
 328 {
 329     static const WCHAR versionW[] = {'<','?','x','m','l',' ','v','e','r','s','i','o','n','=','\"'};
 330     static const WCHAR encodingW[] = {' ','e','n','c','o','d','i','n','g','=','\"'};
 331     static const WCHAR standaloneW[] = {' ','s','t','a','n','d','a','l','o','n','e','=','\"'};
 332     static const WCHAR yesW[] = {'y','e','s','\"','?','>'};
 333     static const WCHAR noW[] = {'n','o','\"','?','>'};
 334     static const WCHAR quotW[] = {'\"'};
 335     static const WCHAR crlfW[] = {'\r','\n'};
 336
 337     /* version */
 338     write_output_buffer(This->buffer, versionW, sizeof(versionW)/sizeof(WCHAR));
 339     write_output_buffer(This->buffer, This->version, -1);
 340     write_output_buffer(This->buffer, quotW, 1);
 341
 342     /* encoding */
 343     write_output_buffer(This->buffer, encodingW, sizeof(encodingW)/sizeof(WCHAR));
 344
 345     /* always write UTF-16 to WCHAR buffer */
 346     write_output_buffer_mode(This->buffer, OutputBuffer_Native, utf16W, sizeof(utf16W)/sizeof(WCHAR) - 1);
 347     write_output_buffer_mode(This->buffer, OutputBuffer_Encoded, This->encoding, -1);
 348     write_output_buffer(This->buffer, quotW, 1);
 349
 350     /* standalone */
 351     write_output_buffer(This->buffer, standaloneW, sizeof(standaloneW)/sizeof(WCHAR));
 352     if (This->props[MXWriter_Standalone] == VARIANT_TRUE)
 353         write_output_buffer(This->buffer, yesW, sizeof(yesW)/sizeof(WCHAR));
 354     else
 355         write_output_buffer(This->buffer, noW, sizeof(noW)/sizeof(WCHAR));
 356
 357     write_output_buffer(This->buffer, crlfW, sizeof(crlfW)/sizeof(WCHAR));
 358 }
 359
 360 /* Attempts to the write data from the mxwriter's buffer to
 361  * the destination stream (if there is one).
 362  */
 363 static HRESULT write_data_to_stream(mxwriter *This)
 364 {
 365     encoded_buffer *buffer;
 366     ULONG written = 0;
 367     HRESULT hr;
 368
 369     if (!This->dest)
 370         return S_OK;
 371
 372     /* The xmlOutputBuffer doesn't copy its contents from its 'buffer' to the
 373      * 'conv' buffer when UTF8 encoding is used.
 374      */
 375     if (This->xml_enc != XmlEncoding_UTF16)
 376         buffer = &This->buffer->encoded;
 377     else
 378         buffer = &This->buffer->utf16;
 379
 380     if (This->dest_written > buffer->written) {
 381         ERR("Failed sanity check! Not sure what to do... (%d > %d)\n", This->dest_written, buffer->written);
 382         return E_FAIL;
 383     } else if (This->dest_written == buffer->written && This->xml_enc != XmlEncoding_UTF8)
 384         /* Windows seems to make an empty write call when the encoding is UTF-8 and
 385          * all the data has been written to the stream. It doesn't seem make this call
 386          * for any other encodings.
 387          */
 388         return S_OK;
 389
 390     /* Write the current content from the output buffer into 'dest'.
 391      * TODO: Check what Windows does if the IStream doesn't write all of
 392      *       the data we give it at once.
 393      */
 394     hr = IStream_Write(This->dest, buffer->data+This->dest_written,
 395                          buffer->written-This->dest_written, &written);
 396     if (FAILED(hr)) {
 397         WARN("Failed to write data to IStream (0x%08x)\n", hr);
 398         return hr;
 399     }
 400
 401     This->dest_written += written;
 402     return hr;
 403 }
 404
 405 /* Newly added element start tag left unclosed cause for empty elements
 406    we have to close it differently. */
 407 static void close_element_starttag(const mxwriter *This)
 408 {
 409     static const WCHAR gtW[] = {'>'};
 410     if (!This->element) return;
 411     write_output_buffer(This->buffer, gtW, 1);
 412 }
 413
 414 static void set_element_name(mxwriter *This, const WCHAR *name, int len)
 415 {
 416     SysFreeString(This->element);
 417     This->element = name ? SysAllocStringLen(name, len) : NULL;
 418 }
 419
 420 static inline HRESULT flush_output_buffer(mxwriter *This)
 421 {
 422     close_element_starttag(This);
 423     set_element_name(This, NULL, 0);
 424     return write_data_to_stream(This);
 425 }
 426
 427 /* Resets the mxwriter's output buffer by closing it, then creating a new
 428  * output buffer using the given encoding.
 429  */
 430 static inline void reset_output_buffer(mxwriter *This)
 431 {
 432     close_output_buffer(This);
 433     This->dest_written = 0;
 434 }
 435
 436 static HRESULT writer_set_property(mxwriter *writer, mxwriter_prop property, VARIANT_BOOL value)
 437 {
 438     writer->props[property] = value;
 439     writer->prop_changed = TRUE;
 440     return S_OK;
 441 }
 442
 443 static HRESULT writer_get_property(const mxwriter *writer, mxwriter_prop property, VARIANT_BOOL *value)
 444 {
 445     if (!value) return E_POINTER;
 446     *value = writer->props[property];
 447     return S_OK;
 448 }
 449
 450 static inline mxwriter *impl_from_IMXWriter(IMXWriter *iface)
 451 {
 452     return CONTAINING_RECORD(iface, mxwriter, IMXWriter_iface);
 453 }
 454
 455 static inline mxwriter *impl_from_ISAXContentHandler(ISAXContentHandler *iface)
 456 {
 457     return CONTAINING_RECORD(iface, mxwriter, ISAXContentHandler_iface);
 458 }
 459
 460 static HRESULT WINAPI mxwriter_QueryInterface(IMXWriter *iface, REFIID riid, void **obj)
 461 {
 462     mxwriter *This = impl_from_IMXWriter( iface );
 463
 464     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), obj);
 465
 466     *obj = NULL;
 467
 468     if ( IsEqualGUID( riid, &IID_IMXWriter ) ||
 469          IsEqualGUID( riid, &IID_IDispatch ) ||
 470          IsEqualGUID( riid, &IID_IUnknown ) )
 471     {
 472         *obj = &This->IMXWriter_iface;
 473     }
 474     else if ( IsEqualGUID( riid, &IID_ISAXContentHandler ) )
 475     {
 476         *obj = &This->ISAXContentHandler_iface;
 477     }
 478     else if (dispex_query_interface(&This->dispex, riid, obj))
 479     {
 480         return *obj ? S_OK : E_NOINTERFACE;
 481     }
 482     else
 483     {
 484         ERR("interface %s not implemented\n", debugstr_guid(riid));
 485         *obj = NULL;
 486         return E_NOINTERFACE;
 487     }
 488
 489     IMXWriter_AddRef(iface);
 490     return S_OK;
 491 }
 492
 493 static ULONG WINAPI mxwriter_AddRef(IMXWriter *iface)
 494 {
 495     mxwriter *This = impl_from_IMXWriter( iface );
 496     LONG ref = InterlockedIncrement(&This->ref);
 497
 498     TRACE("(%p)->(%d)\n", This, ref);
 499
 500     return ref;
 501 }
 502
 503 static ULONG WINAPI mxwriter_Release(IMXWriter *iface)
 504 {
 505     mxwriter *This = impl_from_IMXWriter( iface );
 506     ULONG ref = InterlockedDecrement(&This->ref);
 507
 508     TRACE("(%p)->(%d)\n", This, ref);
 509
 510     if(!ref)
 511     {
 512         /* Windows flushes the buffer when the interface is destroyed. */
 513         flush_output_buffer(This);
 514         free_output_buffer(This->buffer);
 515
 516         if (This->dest) IStream_Release(This->dest);
 517         SysFreeString(This->version);
 518         SysFreeString(This->encoding);
 519
 520         SysFreeString(This->element);
 521         release_dispex(&This->dispex);
 522         heap_free(This);
 523     }
 524
 525     return ref;
 526 }
 527
 528 static HRESULT WINAPI mxwriter_GetTypeInfoCount(IMXWriter *iface, UINT* pctinfo)
 529 {
 530     mxwriter *This = impl_from_IMXWriter( iface );
 531     return IDispatchEx_GetTypeInfoCount(&This->dispex.IDispatchEx_iface, pctinfo);
 532 }
 533
 534 static HRESULT WINAPI mxwriter_GetTypeInfo(
 535     IMXWriter *iface,
 536     UINT iTInfo, LCID lcid,
 537     ITypeInfo** ppTInfo )
 538 {
 539     mxwriter *This = impl_from_IMXWriter( iface );
 540     return IDispatchEx_GetTypeInfo(&This->dispex.IDispatchEx_iface,
 541         iTInfo, lcid, ppTInfo);
 542 }
 543
 544 static HRESULT WINAPI mxwriter_GetIDsOfNames(
 545     IMXWriter *iface,
 546     REFIID riid, LPOLESTR* rgszNames,
 547     UINT cNames, LCID lcid, DISPID* rgDispId )
 548 {
 549     mxwriter *This = impl_from_IMXWriter( iface );
 550     return IDispatchEx_GetIDsOfNames(&This->dispex.IDispatchEx_iface,
 551         riid, rgszNames, cNames, lcid, rgDispId);
 552 }
 553
 554 static HRESULT WINAPI mxwriter_Invoke(
 555     IMXWriter *iface,
 556     DISPID dispIdMember, REFIID riid, LCID lcid,
 557     WORD wFlags, DISPPARAMS* pDispParams, VARIANT* pVarResult,
 558     EXCEPINFO* pExcepInfo, UINT* puArgErr )
 559 {
 560     mxwriter *This = impl_from_IMXWriter( iface );
 561     return IDispatchEx_Invoke(&This->dispex.IDispatchEx_iface,
 562         dispIdMember, riid, lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 563 }
 564
 565 static HRESULT WINAPI mxwriter_put_output(IMXWriter *iface, VARIANT dest)
 566 {
 567     mxwriter *This = impl_from_IMXWriter( iface );
 568     HRESULT hr;
 569
 570     TRACE("(%p)->(%s)\n", This, debugstr_variant(&dest));
 571
 572     hr = flush_output_buffer(This);
 573     if (FAILED(hr))
 574         return hr;
 575
 576     switch (V_VT(&dest))
 577     {
 578     case VT_EMPTY:
 579     {
 580         if (This->dest) IStream_Release(This->dest);
 581         This->dest = NULL;
 582         reset_output_buffer(This);
 583         break;
 584     }
 585     case VT_UNKNOWN:
 586     {
 587         IStream *stream;
 588
 589         hr = IUnknown_QueryInterface(V_UNKNOWN(&dest), &IID_IStream, (void**)&stream);
 590         if (hr == S_OK)
 591         {
 592             /* Recreate the output buffer to make sure it's using the correct encoding. */
 593             reset_output_buffer(This);
 594
 595             if (This->dest) IStream_Release(This->dest);
 596             This->dest = stream;
 597             break;
 598         }
 599
 600         FIXME("unhandled interface type for VT_UNKNOWN destination\n");
 601         return E_NOTIMPL;
 602     }
 603     default:
 604         FIXME("unhandled destination type %s\n", debugstr_variant(&dest));
 605         return E_NOTIMPL;
 606     }
 607
 608     return S_OK;
 609 }
 610
 611 static HRESULT WINAPI mxwriter_get_output(IMXWriter *iface, VARIANT *dest)
 612 {
 613     mxwriter *This = impl_from_IMXWriter( iface );
 614
 615     TRACE("(%p)->(%p)\n", This, dest);
 616
 617     if (!This->dest)
 618     {
 619         HRESULT hr = flush_output_buffer(This);
 620         if (FAILED(hr))
 621             return hr;
 622
 623         V_VT(dest)   = VT_BSTR;
 624         V_BSTR(dest) = SysAllocString((WCHAR*)This->buffer->utf16.data);
 625
 626         return S_OK;
 627     }
 628     else
 629         FIXME("not implemented when stream is set up\n");
 630
 631     return E_NOTIMPL;
 632 }
 633
 634 static HRESULT WINAPI mxwriter_put_encoding(IMXWriter *iface, BSTR encoding)
 635 {
 636     mxwriter *This = impl_from_IMXWriter( iface );
 637     xml_encoding enc;
 638     HRESULT hr;
 639
 640     TRACE("(%p)->(%s)\n", This, debugstr_w(encoding));
 641
 642     enc = parse_encoding_name(encoding);
 643     if (enc == XmlEncoding_Unknown)
 644     {
 645         FIXME("unsupported encoding %s\n", debugstr_w(encoding));
 646         return E_INVALIDARG;
 647     }
 648
 649     hr = flush_output_buffer(This);
 650     if (FAILED(hr))
 651         return hr;
 652
 653     SysReAllocString(&This->encoding, encoding);
 654     This->xml_enc = enc;
 655
 656     TRACE("got encoding %d\n", This->xml_enc);
 657     reset_output_buffer(This);
 658     return S_OK;
 659 }
 660
 661 static HRESULT WINAPI mxwriter_get_encoding(IMXWriter *iface, BSTR *encoding)
 662 {
 663     mxwriter *This = impl_from_IMXWriter( iface );
 664
 665     TRACE("(%p)->(%p)\n", This, encoding);
 666
 667     if (!encoding) return E_POINTER;
 668
 669     *encoding = SysAllocString(This->encoding);
 670     if (!*encoding) return E_OUTOFMEMORY;
 671
 672     return S_OK;
 673 }
 674
 675 static HRESULT WINAPI mxwriter_put_byteOrderMark(IMXWriter *iface, VARIANT_BOOL value)
 676 {
 677     mxwriter *This = impl_from_IMXWriter( iface );
 678
 679     TRACE("(%p)->(%d)\n", This, value);
 680     return writer_set_property(This, MXWriter_BOM, value);
 681 }
 682
 683 static HRESULT WINAPI mxwriter_get_byteOrderMark(IMXWriter *iface, VARIANT_BOOL *value)
 684 {
 685     mxwriter *This = impl_from_IMXWriter( iface );
 686
 687     TRACE("(%p)->(%p)\n", This, value);
 688     return writer_get_property(This, MXWriter_BOM, value);
 689 }
 690
 691 static HRESULT WINAPI mxwriter_put_indent(IMXWriter *iface, VARIANT_BOOL value)
 692 {
 693     mxwriter *This = impl_from_IMXWriter( iface );
 694
 695     TRACE("(%p)->(%d)\n", This, value);
 696     return writer_set_property(This, MXWriter_Indent, value);
 697 }
 698
 699 static HRESULT WINAPI mxwriter_get_indent(IMXWriter *iface, VARIANT_BOOL *value)
 700 {
 701     mxwriter *This = impl_from_IMXWriter( iface );
 702
 703     TRACE("(%p)->(%p)\n", This, value);
 704     return writer_get_property(This, MXWriter_Indent, value);
 705 }
 706
 707 static HRESULT WINAPI mxwriter_put_standalone(IMXWriter *iface, VARIANT_BOOL value)
 708 {
 709     mxwriter *This = impl_from_IMXWriter( iface );
 710
 711     TRACE("(%p)->(%d)\n", This, value);
 712     return writer_set_property(This, MXWriter_Standalone, value);
 713 }
 714
 715 static HRESULT WINAPI mxwriter_get_standalone(IMXWriter *iface, VARIANT_BOOL *value)
 716 {
 717     mxwriter *This = impl_from_IMXWriter( iface );
 718
 719     TRACE("(%p)->(%p)\n", This, value);
 720     return writer_get_property(This, MXWriter_Standalone, value);
 721 }
 722
 723 static HRESULT WINAPI mxwriter_put_omitXMLDeclaration(IMXWriter *iface, VARIANT_BOOL value)
 724 {
 725     mxwriter *This = impl_from_IMXWriter( iface );
 726
 727     TRACE("(%p)->(%d)\n", This, value);
 728     return writer_set_property(This, MXWriter_OmitXmlDecl, value);
 729 }
 730
 731 static HRESULT WINAPI mxwriter_get_omitXMLDeclaration(IMXWriter *iface, VARIANT_BOOL *value)
 732 {
 733     mxwriter *This = impl_from_IMXWriter( iface );
 734
 735     TRACE("(%p)->(%p)\n", This, value);
 736     return writer_get_property(This, MXWriter_OmitXmlDecl, value);
 737 }
 738
 739 static HRESULT WINAPI mxwriter_put_version(IMXWriter *iface, BSTR version)
 740 {
 741     mxwriter *This = impl_from_IMXWriter( iface );
 742
 743     TRACE("(%p)->(%s)\n", This, debugstr_w(version));
 744
 745     if (!version) return E_INVALIDARG;
 746
 747     SysFreeString(This->version);
 748     This->version = SysAllocString(version);
 749
 750     return S_OK;
 751 }
 752
 753 static HRESULT WINAPI mxwriter_get_version(IMXWriter *iface, BSTR *version)
 754 {
 755     mxwriter *This = impl_from_IMXWriter( iface );
 756
 757     TRACE("(%p)->(%p)\n", This, version);
 758
 759     if (!version) return E_POINTER;
 760
 761     return return_bstr(This->version, version);
 762 }
 763
 764 static HRESULT WINAPI mxwriter_put_disableOutputEscaping(IMXWriter *iface, VARIANT_BOOL value)
 765 {
 766     mxwriter *This = impl_from_IMXWriter( iface );
 767
 768     TRACE("(%p)->(%d)\n", This, value);
 769     return writer_set_property(This, MXWriter_DisableEscaping, value);
 770 }
 771
 772 static HRESULT WINAPI mxwriter_get_disableOutputEscaping(IMXWriter *iface, VARIANT_BOOL *value)
 773 {
 774     mxwriter *This = impl_from_IMXWriter( iface );
 775
 776     TRACE("(%p)->(%p)\n", This, value);
 777     return writer_get_property(This, MXWriter_DisableEscaping, value);
 778 }
 779
 780 static HRESULT WINAPI mxwriter_flush(IMXWriter *iface)
 781 {
 782     mxwriter *This = impl_from_IMXWriter( iface );
 783     TRACE("(%p)\n", This);
 784     return flush_output_buffer(This);
 785 }
 786
 787 static const struct IMXWriterVtbl MXWriterVtbl =
 788 {
 789     mxwriter_QueryInterface,
 790     mxwriter_AddRef,
 791     mxwriter_Release,
 792     mxwriter_GetTypeInfoCount,
 793     mxwriter_GetTypeInfo,
 794     mxwriter_GetIDsOfNames,
 795     mxwriter_Invoke,
 796     mxwriter_put_output,
 797     mxwriter_get_output,
 798     mxwriter_put_encoding,
 799     mxwriter_get_encoding,
 800     mxwriter_put_byteOrderMark,
 801     mxwriter_get_byteOrderMark,
 802     mxwriter_put_indent,
 803     mxwriter_get_indent,
 804     mxwriter_put_standalone,
 805     mxwriter_get_standalone,
 806     mxwriter_put_omitXMLDeclaration,
 807     mxwriter_get_omitXMLDeclaration,
 808     mxwriter_put_version,
 809     mxwriter_get_version,
 810     mxwriter_put_disableOutputEscaping,
 811     mxwriter_get_disableOutputEscaping,
 812     mxwriter_flush
 813 };
 814
 815 /*** ISAXContentHandler ***/
 816 static HRESULT WINAPI mxwriter_saxcontent_QueryInterface(
 817     ISAXContentHandler *iface,
 818     REFIID riid,
 819     void **obj)
 820 {
 821     mxwriter *This = impl_from_ISAXContentHandler( iface );
 822     return IMXWriter_QueryInterface(&This->IMXWriter_iface, riid, obj);
 823 }
 824
 825 static ULONG WINAPI mxwriter_saxcontent_AddRef(ISAXContentHandler *iface)
 826 {
 827     mxwriter *This = impl_from_ISAXContentHandler( iface );
 828     return IMXWriter_AddRef(&This->IMXWriter_iface);
 829 }
 830
 831 static ULONG WINAPI mxwriter_saxcontent_Release(ISAXContentHandler *iface)
 832 {
 833     mxwriter *This = impl_from_ISAXContentHandler( iface );
 834     return IMXWriter_Release(&This->IMXWriter_iface);
 835 }
 836
 837 static HRESULT WINAPI mxwriter_saxcontent_putDocumentLocator(
 838     ISAXContentHandler *iface,
 839     ISAXLocator *locator)
 840 {
 841     mxwriter *This = impl_from_ISAXContentHandler( iface );
 842     FIXME("(%p)->(%p)\n", This, locator);
 843     return E_NOTIMPL;
 844 }
 845
 846 static HRESULT WINAPI mxwriter_saxcontent_startDocument(ISAXContentHandler *iface)
 847 {
 848     mxwriter *This = impl_from_ISAXContentHandler( iface );
 849
 850     TRACE("(%p)\n", This);
 851
 852     /* If properties have been changed since the last "endDocument" call
 853      * we need to reset the output buffer. If we don't the output buffer
 854      * could end up with multiple XML documents in it, plus this seems to
 855      * be how Windows works.
 856      */
 857     if (This->prop_changed) {
 858         reset_output_buffer(This);
 859         This->prop_changed = FALSE;
 860     }
 861
 862     if (This->props[MXWriter_OmitXmlDecl] == VARIANT_TRUE) return S_OK;
 863
 864     write_prolog_buffer(This);
 865
 866     if (This->dest && This->xml_enc == XmlEncoding_UTF16) {
 867         static const char utf16BOM[] = {0xff,0xfe};
 868
 869         if (This->props[MXWriter_BOM] == VARIANT_TRUE)
 870             /* Windows passes a NULL pointer as the pcbWritten parameter and
 871              * ignores any error codes returned from this Write call.
 872              */
 873             IStream_Write(This->dest, utf16BOM, sizeof(utf16BOM), NULL);
 874     }
 875
 876     return S_OK;
 877 }
 878
 879 static HRESULT WINAPI mxwriter_saxcontent_endDocument(ISAXContentHandler *iface)
 880 {
 881     mxwriter *This = impl_from_ISAXContentHandler( iface );
 882     TRACE("(%p)\n", This);
 883     This->prop_changed = FALSE;
 884     return flush_output_buffer(This);
 885 }
 886
 887 static HRESULT WINAPI mxwriter_saxcontent_startPrefixMapping(
 888     ISAXContentHandler *iface,
 889     const WCHAR *prefix,
 890     int nprefix,
 891     const WCHAR *uri,
 892     int nuri)
 893 {
 894     mxwriter *This = impl_from_ISAXContentHandler( iface );
 895     FIXME("(%p)->(%s %s)\n", This, debugstr_wn(prefix, nprefix), debugstr_wn(uri, nuri));
 896     return E_NOTIMPL;
 897 }
 898
 899 static HRESULT WINAPI mxwriter_saxcontent_endPrefixMapping(
 900     ISAXContentHandler *iface,
 901     const WCHAR *prefix,
 902     int nprefix)
 903 {
 904     mxwriter *This = impl_from_ISAXContentHandler( iface );
 905     FIXME("(%p)->(%s)\n", This, debugstr_wn(prefix, nprefix));
 906     return E_NOTIMPL;
 907 }
 908
 909 static HRESULT WINAPI mxwriter_saxcontent_startElement(
 910     ISAXContentHandler *iface,
 911     const WCHAR *namespaceUri,
 912     int nnamespaceUri,
 913     const WCHAR *local_name,
 914     int nlocal_name,
 915     const WCHAR *QName,
 916     int nQName,
 917     ISAXAttributes *attr)
 918 {
 919     mxwriter *This = impl_from_ISAXContentHandler( iface );
 920     static const WCHAR ltW[] = {'<'};
 921
 922     TRACE("(%p)->(%s %s %s %p)\n", This, debugstr_wn(namespaceUri, nnamespaceUri),
 923         debugstr_wn(local_name, nlocal_name), debugstr_wn(QName, nQName), attr);
 924
 925     if ((!namespaceUri || !local_name || !QName) && This->class_version != MSXML6)
 926         return E_INVALIDARG;
 927
 928     close_element_starttag(This);
 929     set_element_name(This, QName ? QName  : emptyW,
 930                            QName ? nQName : 0);
 931
 932     write_output_buffer(This->buffer, ltW, 1);
 933     write_output_buffer(This->buffer, QName, nQName);
 934
 935     if (attr)
 936     {
 937         HRESULT hr;
 938         INT length;
 939         INT i;
 940
 941         hr = ISAXAttributes_getLength(attr, &length);
 942         if (FAILED(hr)) return hr;
 943
 944         for (i = 0; i < length; i++)
 945         {
 946             static const WCHAR spaceW[] = {' '};
 947             static const WCHAR eqqW[] = {'=','\"'};
 948             static const WCHAR quotW[] = {'\"'};
 949             const WCHAR *str;
 950             WCHAR *escaped;
 951             INT len = 0;
 952
 953             hr = ISAXAttributes_getQName(attr, i, &str, &len);
 954             if (FAILED(hr)) return hr;
 955
 956             /* space separator in front of every attribute */
 957             write_output_buffer(This->buffer, spaceW, 1);
 958             write_output_buffer(This->buffer, str, len);
 959
 960             write_output_buffer(This->buffer, eqqW, 2);
 961
 962             len = 0;
 963             hr = ISAXAttributes_getValue(attr, i, &str, &len);
 964             if (FAILED(hr)) return hr;
 965
 966             escaped = get_escaped_string(str, &len);
 967             write_output_buffer(This->buffer, escaped, len);
 968             heap_free(escaped);
 969
 970             write_output_buffer(This->buffer, quotW, 1);
 971         }
 972     }
 973
 974     return S_OK;
 975 }
 976
 977 static HRESULT WINAPI mxwriter_saxcontent_endElement(
 978     ISAXContentHandler *iface,
 979     const WCHAR *namespaceUri,
 980     int nnamespaceUri,
 981     const WCHAR * local_name,
 982     int nlocal_name,
 983     const WCHAR *QName,
 984     int nQName)
 985 {
 986     mxwriter *This = impl_from_ISAXContentHandler( iface );
 987
 988     TRACE("(%p)->(%s:%d %s:%d %s:%d)\n", This, debugstr_wn(namespaceUri, nnamespaceUri), nnamespaceUri,
 989         debugstr_wn(local_name, nlocal_name), nlocal_name, debugstr_wn(QName, nQName), nQName);
 990
 991     if ((!namespaceUri || !local_name || !QName) && This->class_version != MSXML6)
 992         return E_INVALIDARG;
 993
 994     if (This->element && QName && !strncmpW(This->element, QName, nQName))
 995     {
 996         static const WCHAR closeW[] = {'/','>'};
 997
 998         write_output_buffer(This->buffer, closeW, 2);
 999     }
1000     else
1001     {
1002         static const WCHAR closetagW[] = {'<','/'};
1003         static const WCHAR gtW[] = {'>'};
1004
1005         write_output_buffer(This->buffer, closetagW, 2);
1006         write_output_buffer(This->buffer, QName, nQName);
1007         write_output_buffer(This->buffer, gtW, 1);
1008     }
1009
1010     set_element_name(This, NULL, 0);
1011
1012     return S_OK;
1013 }
1014
1015 static HRESULT WINAPI mxwriter_saxcontent_characters(
1016     ISAXContentHandler *iface,
1017     const WCHAR *chars,
1018     int nchars)
1019 {
1020     mxwriter *This = impl_from_ISAXContentHandler( iface );
1021
1022     TRACE("(%p)->(%s:%d)\n", This, debugstr_wn(chars, nchars), nchars);
1023
1024     if (!chars) return E_INVALIDARG;
1025
1026     close_element_starttag(This);
1027     set_element_name(This, NULL, 0);
1028
1029     if (nchars)
1030         write_output_buffer(This->buffer, chars, nchars);
1031
1032     return S_OK;
1033 }
1034
1035 static HRESULT WINAPI mxwriter_saxcontent_ignorableWhitespace(
1036     ISAXContentHandler *iface,
1037     const WCHAR *chars,
1038     int nchars)
1039 {
1040     mxwriter *This = impl_from_ISAXContentHandler( iface );
1041     FIXME("(%p)->(%s)\n", This, debugstr_wn(chars, nchars));
1042     return E_NOTIMPL;
1043 }
1044
1045 static HRESULT WINAPI mxwriter_saxcontent_processingInstruction(
1046     ISAXContentHandler *iface,
1047     const WCHAR *target,
1048     int ntarget,
1049     const WCHAR *data,
1050     int ndata)
1051 {
1052     mxwriter *This = impl_from_ISAXContentHandler( iface );
1053     FIXME("(%p)->(%s %s)\n", This, debugstr_wn(target, ntarget), debugstr_wn(data, ndata));
1054     return E_NOTIMPL;
1055 }
1056
1057 static HRESULT WINAPI mxwriter_saxcontent_skippedEntity(
1058     ISAXContentHandler *iface,
1059     const WCHAR *name,
1060     int nname)
1061 {
1062     mxwriter *This = impl_from_ISAXContentHandler( iface );
1063     FIXME("(%p)->(%s)\n", This, debugstr_wn(name, nname));
1064     return E_NOTIMPL;
1065 }
1066
1067 static const struct ISAXContentHandlerVtbl mxwriter_saxcontent_vtbl =
1068 {
1069     mxwriter_saxcontent_QueryInterface,
1070     mxwriter_saxcontent_AddRef,
1071     mxwriter_saxcontent_Release,
1072     mxwriter_saxcontent_putDocumentLocator,
1073     mxwriter_saxcontent_startDocument,
1074     mxwriter_saxcontent_endDocument,
1075     mxwriter_saxcontent_startPrefixMapping,
1076     mxwriter_saxcontent_endPrefixMapping,
1077     mxwriter_saxcontent_startElement,
1078     mxwriter_saxcontent_endElement,
1079     mxwriter_saxcontent_characters,
1080     mxwriter_saxcontent_ignorableWhitespace,
1081     mxwriter_saxcontent_processingInstruction,
1082     mxwriter_saxcontent_skippedEntity
1083 };
1084
1085 static const tid_t mxwriter_iface_tids[] = {
1086     IMXWriter_tid,
1087     0
1088 };
1089
1090 static dispex_static_data_t mxwriter_dispex = {
1091     NULL,
1092     IMXWriter_tid,
1093     NULL,
1094     mxwriter_iface_tids
1095 };
1096
1097 HRESULT MXWriter_create(MSXML_VERSION version, IUnknown *outer, void **ppObj)
1098 {
1099     static const WCHAR version10W[] = {'1','.','0',0};
1100     mxwriter *This;
1101     HRESULT hr;
1102
1103     TRACE("(%p, %p)\n", outer, ppObj);
1104
1105     if (outer) FIXME("support aggregation, outer\n");
1106
1107     This = heap_alloc( sizeof (*This) );
1108     if(!This)
1109         return E_OUTOFMEMORY;
1110
1111     This->IMXWriter_iface.lpVtbl = &MXWriterVtbl;
1112     This->ISAXContentHandler_iface.lpVtbl = &mxwriter_saxcontent_vtbl;
1113     This->ref = 1;
1114     This->class_version = version;
1115
1116     This->props[MXWriter_BOM] = VARIANT_TRUE;
1117     This->props[MXWriter_DisableEscaping] = VARIANT_FALSE;
1118     This->props[MXWriter_Indent] = VARIANT_FALSE;
1119     This->props[MXWriter_OmitXmlDecl] = VARIANT_FALSE;
1120     This->props[MXWriter_Standalone] = VARIANT_FALSE;
1121     This->prop_changed = FALSE;
1122     This->encoding = SysAllocString(utf16W);
1123     This->version  = SysAllocString(version10W);
1124     This->xml_enc  = XmlEncoding_UTF16;
1125
1126     This->element = NULL;
1127
1128     This->dest = NULL;
1129     This->dest_written = 0;
1130
1131     hr = alloc_output_buffer(This->xml_enc, &This->buffer);
1132     if (hr != S_OK) {
1133         SysFreeString(This->encoding);
1134         SysFreeString(This->version);
1135         heap_free(This);
1136         return hr;
1137     }
1138
1139     init_dispex(&This->dispex, (IUnknown*)&This->IMXWriter_iface, &mxwriter_dispex);
1140
1141     *ppObj = &This->IMXWriter_iface;
1142
1143     TRACE("returning iface %p\n", *ppObj);
1144
1145     return S_OK;
1146 }
1147
1148 #else
1149
1150 HRESULT MXWriter_create(MSXML_VERSION version, IUnknown *outer, void **obj)
1151 {
1152     MESSAGE("This program tried to use a MXXMLWriter object, but\n"
1153             "libxml2 support was not present at compile time.\n");
1154     return E_NOTIMPL;
1155 }
1156
1157 #endif /* HAVE_LIBXML2 */