1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <iodetect.hxx>
#include <boost/scoped_array.hpp>
#include <osl/endian.h>
#include <sot/storage.hxx>
#include <svtools/parhtml.hxx>
#include <tools/urlobj.hxx>
bool IsDocShellRegistered();
SwIoDetect aFilterDetect[] =
{
SwIoDetect( FILTER_RTF ),
SwIoDetect( FILTER_BAS ),
SwIoDetect( sWW6 ),
SwIoDetect( FILTER_WW8 ),
SwIoDetect( sRtfWH ),
SwIoDetect( sHTML ),
SwIoDetect( sWW1 ),
SwIoDetect( sWW5 ),
SwIoDetect( FILTER_XML ),
SwIoDetect( FILTER_TEXT_DLG ),
SwIoDetect( FILTER_TEXT )
};
OUString SwIoDetect::IsReader(const sal_Char* pHeader, sal_uLong nLen_) const
{
// Filter erkennung
struct W1_FIB
{
SVBT16 wIdent; // 0x0 int magic number
SVBT16 nFib; // 0x2 FIB version written
SVBT16 nProduct; // 0x4 product version written by
SVBT16 nlocale; // 0x6 language stamp---localized version;
SVBT16 pnNext; // 0x8
SVBT16 fFlags;
sal_uInt16 nFibGet() { return SVBT16ToShort(nFib); }
sal_uInt16 wIdentGet() { return SVBT16ToShort(wIdent); }
sal_uInt16 fFlagsGet() { return SVBT16ToShort(fFlags); }
// SVBT16 fComplex :1;// 0004 when 1, file is in complex, fast-saved format.
sal_Bool fComplexGet() { return static_cast< sal_Bool >((fFlagsGet() >> 2) & 1); }
};
int bRet = sal_False;
if ( sHTML == sName )
bRet = HTMLParser::IsHTMLFormat( pHeader, sal_True, RTL_TEXTENCODING_DONTKNOW );
else if ( FILTER_RTF == sName )
bRet = 0 == strncmp( "{\\rtf", pHeader, 5 );
else if ( sWW5 == sName )
{
W1_FIB *pW1Header = (W1_FIB*)pHeader;
if (pW1Header->wIdentGet() == 0xA5DC && pW1Header->nFibGet() == 0x65)
bRet = true; /*WW5*/
else if (pW1Header->wIdentGet() == 0xA5DB && pW1Header->nFibGet() == 0x2D)
bRet = true; /*WW2*/
}
else if ( sWW1 == sName )
{
bRet = (( ((W1_FIB*)pHeader)->wIdentGet() == 0xA59C
&& ((W1_FIB*)pHeader)->nFibGet() == 0x21)
&& ((W1_FIB*)pHeader)->fComplexGet() == 0);
}
else if ( FILTER_TEXT == sName )
bRet = SwIoSystem::IsDetectableText(pHeader, nLen_);
else if ( FILTER_TEXT_DLG == sName)
bRet = SwIoSystem::IsDetectableText( pHeader, nLen_, 0, 0, 0, true);
return bRet ? sName : OUString();
}
const String SwIoSystem::GetSubStorageName( const SfxFilter& rFltr )
{
/* bei den StorageFiltern noch den SubStorageNamen setzen */
const OUString& rUserData = rFltr.GetUserData();
if (rUserData == FILTER_XML ||
rUserData == FILTER_XMLV ||
rUserData == FILTER_XMLVW)
return OUString("content.xml");
if (rUserData == sWW6 || rUserData == FILTER_WW8)
return OUString("WordDocument");
return OUString();
}
const SfxFilter* SwIoSystem::GetFilterOfFormat(const String& rFmtNm,
const SfxFilterContainer* pCnt)
{
SfxFilterContainer aCntSw( OUString(sSWRITER) );
SfxFilterContainer aCntSwWeb( OUString(sSWRITERWEB) );
const SfxFilterContainer* pFltCnt = pCnt ? pCnt : ( IsDocShellRegistered() ? &aCntSw : &aCntSwWeb );
do {
if( pFltCnt )
{
SfxFilterMatcher aMatcher( pFltCnt->GetName() );
SfxFilterMatcherIter aIter( aMatcher );
const SfxFilter* pFilter = aIter.First();
while ( pFilter )
{
if( pFilter->GetUserData().equals(rFmtNm) )
return pFilter;
pFilter = aIter.Next();
}
}
if( pCnt || pFltCnt == &aCntSwWeb )
break;
pFltCnt = &aCntSwWeb;
} while( true );
return 0;
}
sal_Bool SwIoSystem::IsValidStgFilter( const com::sun::star::uno::Reference < com::sun::star::embed::XStorage >& rStg, const SfxFilter& rFilter)
{
sal_Bool bRet = sal_False;
try
{
sal_uLong nStgFmtId = SotStorage::GetFormatID( rStg );
bRet = rStg->isStreamElement( OUString("content.xml") );
if ( bRet )
bRet = ( nStgFmtId && ( rFilter.GetFormat() == nStgFmtId ) );
}
catch ( com::sun::star::uno::Exception& )
{
}
return bRet;
}
sal_Bool SwIoSystem::IsValidStgFilter(SotStorage& rStg, const SfxFilter& rFilter)
{
sal_uLong nStgFmtId = rStg.GetFormat();
/*#i8409# We cannot trust the clipboard id anymore :-(*/
if (rFilter.GetUserData() == FILTER_WW8 || rFilter.GetUserData() == sWW6)
nStgFmtId = 0;
sal_Bool bRet = SVSTREAM_OK == rStg.GetError() &&
( !nStgFmtId || rFilter.GetFormat() == nStgFmtId ) &&
( rStg.IsContained( SwIoSystem::GetSubStorageName( rFilter )) );
if( bRet )
{
/* Bug 53445 - es gibt Excel Docs ohne ClipBoardId! */
/* Bug 62703 - und auch WinWord Docs ohne ClipBoardId! */
if (rFilter.GetUserData() == FILTER_WW8 || rFilter.GetUserData() == sWW6)
{
bRet = !((rStg.IsContained( OUString("0Table")) ||
rStg.IsContained( OUString("1Table"))) ^
(rFilter.GetUserData() == FILTER_WW8));
if (bRet && !rFilter.IsAllowedAsTemplate())
{
SotStorageStreamRef xRef =
rStg.OpenSotStream(OUString("WordDocument"),
STREAM_STD_READ | STREAM_NOCREATE );
xRef->Seek(10);
sal_uInt8 nByte;
*xRef >> nByte;
bRet = !(nByte & 1);
}
}
}
return bRet;
}
void TerminateBuffer(sal_Char *pBuffer, sal_uLong nBytesRead, sal_uLong nBufferLen)
{
OSL_ENSURE(nBytesRead <= nBufferLen - 2,
"what you read must be less than the max + null termination");
OSL_ENSURE(!(nBufferLen & 0x00000001), "nMaxReadBuf must be an even number");
if (nBytesRead <= nBufferLen - 2)
{
pBuffer[nBytesRead] = '\0';
pBuffer[nBytesRead+1] = '\0';
if (nBytesRead & 0x00000001)
pBuffer[nBytesRead+2] = '\0';
}
}
/* Feststellen ob das File in dem entsprechenden Format vorliegt. */
/* Z.z werden nur unsere eigene Filter unterstuetzt */
sal_Bool SwIoSystem::IsFileFilter(SfxMedium& rMedium, const String& rFmtName)
{
sal_Bool bRet = sal_False;
SfxFilterContainer aCntSw( OUString(sSWRITER) );
SfxFilterContainer aCntSwWeb( OUString(sSWRITERWEB) );
const SfxFilterContainer& rFltContainer = IsDocShellRegistered() ? aCntSw : aCntSwWeb;
com::sun::star::uno::Reference < com::sun::star::embed::XStorage > xStor;
SotStorageRef xStg;
if (rMedium.IsStorage())
xStor = rMedium.GetStorage();
else
{
SvStream* pStream = rMedium.GetInStream();
if ( pStream && SotStorage::IsStorageFile(pStream) )
xStg = new SotStorage( pStream, sal_False );
}
SfxFilterMatcher aMatcher( rFltContainer.GetName() );
SfxFilterMatcherIter aIter( aMatcher );
const SfxFilter* pFltr = aIter.First();
while ( pFltr )
{
const OUString& rUserData = pFltr->GetUserData();
if (rUserData.equals(rFmtName))
{
if( 'C' == rUserData[0] )
{
if ( xStor.is() )
bRet = IsValidStgFilter( xStor, *pFltr );
else if ( xStg.Is() )
bRet = IsValidStgFilter( *xStg, *pFltr );
}
else if( !xStg.Is() && !xStor.is() )
{
SvStream* pStrm = rMedium.GetInStream();
if( pStrm && !pStrm->GetError() )
{
sal_Char aBuffer[4098];
const sal_uLong nMaxRead = sizeof(aBuffer) - 2;
sal_uLong nBytesRead = pStrm->Read(aBuffer, nMaxRead);
pStrm->Seek(STREAM_SEEK_TO_BEGIN);
TerminateBuffer(aBuffer, nBytesRead, sizeof(aBuffer));
for (sal_uInt16 i = 0; i < MAXFILTER; ++i)
{
if (aFilterDetect[i].IsFilter(rFmtName))
{
OUString sFilter(aFilterDetect[i].IsReader(aBuffer, nBytesRead));
bRet = !sFilter.isEmpty();
break;
}
}
}
}
//The same underlying filter can appear multiple times in the
//filter list, e.g. CWW8 filter twice, once for .doc and once for
//.dot. We just care here if its either, not enforce that it's
//both which would be a bit of an odd requirement
if (bRet)
break;
}
pFltr = aIter.Next();
}
return bRet;
}
/* die Methode stellt fest, von welchem Typ der stream (File) ist. */
/* Es wird versucht, eine dem Filter entsprechende Byte-Folge zu finden. */
/* Wird kein entsprechender gefunden, wird zur Zeit der ASCII-Reader */
/* returnt !! Der Returnwert ist der interne Filtername! */
/* rPrefFltName ist der interne Name des Filters, den der Benutzer im */
/* Open-Dialog eingestellt hat. */
const SfxFilter* SwIoSystem::GetFileFilter(const String& rFileName,
const String& rPrefFltName, SfxMedium* pMedium)
{
SfxFilterContainer aCntSw( OUString(sSWRITER) );
SfxFilterContainer aCntSwWeb( OUString(sSWRITERWEB) );
const SfxFilterContainer* pFCntnr = IsDocShellRegistered() ? &aCntSw : &aCntSwWeb;
if( !pFCntnr )
return 0;
SfxFilterMatcher aMatcher( pFCntnr->GetName() );
SfxFilterMatcherIter aIter( aMatcher );
const SfxFilter* pFilter = aIter.First();
if ( !pFilter )
return 0;
if( pMedium ? ( pMedium->IsStorage() || SotStorage::IsStorageFile( pMedium->GetInStream() ) ) : SotStorage::IsStorageFile( rFileName ) )
{
// package storage or OLEStorage based format
SotStorageRef xStg;
if (!pMedium )
{
INetURLObject aObj;
aObj.SetSmartProtocol( INET_PROT_FILE );
aObj.SetSmartURL( rFileName );
pMedium = new SfxMedium( aObj.GetMainURL( INetURLObject::NO_DECODE ), STREAM_STD_READ );
}
// templates should not get precedence over "normal" filters (#i35508, #i33168)
const SfxFilter* pTemplateFilter = 0;
const SfxFilter* pOldFilter = pFCntnr->GetFilter4FilterName( rPrefFltName );
bool bLookForTemplate = pOldFilter && pOldFilter->IsOwnTemplateFormat();
if ( pMedium->IsStorage() )
{
com::sun::star::uno::Reference < com::sun::star::embed::XStorage > xStor = pMedium->GetStorage();
if ( xStor.is() )
{
while ( pFilter )
{
if( 'C' == pFilter->GetUserData()[0] && IsValidStgFilter( xStor, *pFilter ) )
{
if ( pFilter->IsOwnTemplateFormat() && !bLookForTemplate )
// found template filter; maybe there's a "normal" one also
pTemplateFilter = pFilter;
else
return pFilter;
}
pFilter = aIter.Next();
}
// there's only a template filter that could be found
if ( pTemplateFilter )
pFilter = pTemplateFilter;
}
}
else
{
SvStream* pStream = pMedium->GetInStream();
if ( pStream && SotStorage::IsStorageFile(pStream) )
xStg = new SotStorage( pStream, sal_False );
if( xStg.Is() && ( xStg->GetError() == SVSTREAM_OK ) )
{
while ( pFilter )
{
if( 'C' == pFilter->GetUserData()[0] && IsValidStgFilter( *xStg, *pFilter ) )
{
if ( pFilter->IsOwnTemplateFormat() && !bLookForTemplate )
// found template filter; maybe there's a "normal" one also
pTemplateFilter = pFilter;
else
return pFilter;
}
pFilter = aIter.Next();
}
// there's only a template filter that could be found
if ( pTemplateFilter )
pFilter = pTemplateFilter;
}
}
return pFilter;
}
sal_Char aBuffer[4098];
const sal_uLong nMaxRead = sizeof(aBuffer) - 2;
sal_uLong nBytesRead = 0;
if (pMedium)
{
SvStream* pIStrm = pMedium->GetInStream();
if( !pIStrm || SVSTREAM_OK != pIStrm->GetError() )
return 0;
sal_uLong nCurrPos = pIStrm->Tell();
nBytesRead = pIStrm->Read(aBuffer, nMaxRead);
pIStrm->Seek( nCurrPos );
}
TerminateBuffer(aBuffer, nBytesRead, sizeof(aBuffer));
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
/* suche nach dem bestimmten Filter, falls kein entsprechender */
/* gefunden wird, so wird der ASCII-Filter returnt. */
/* Gibt es Filter ohne einen Identifizierungs-String, so werden diese */
/* nie erkannt und es wird auch der ASCII-Filter returnt. */
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
{
for( sal_uInt16 n = 0; n < MAXFILTER; ++n )
{
OUString sNm(aFilterDetect[n].IsReader(aBuffer, nBytesRead));
const SfxFilter* pFilterTmp =
sNm.isEmpty() ? 0 : SwIoSystem::GetFilterOfFormat(sNm, pFCntnr);
if (pFilterTmp)
{
return pFilterTmp;
}
}
}
/* Ok, bis jetzt kein Filter gefunden, also befrage mal die */
/* "WORD 4 WORD" Filter */
if( rFileName.Len() )
{
if( pMedium )
pMedium->CloseInStream();
}
return SwIoSystem::GetTextFilter( aBuffer, nBytesRead);
}
bool SwIoSystem::IsDetectableText(const sal_Char* pBuf, sal_uLong &rLen,
CharSet *pCharSet, bool *pSwap, LineEnd *pLineEnd, bool bEncodedFilter)
{
bool bSwap = false;
CharSet eCharSet = RTL_TEXTENCODING_DONTKNOW;
bool bLE = true;
/*See if it's a known unicode type*/
if (rLen >= 2)
{
sal_uLong nHead=0;
if (rLen > 2 && sal_uInt8(pBuf[0]) == 0xEF && sal_uInt8(pBuf[1]) == 0xBB &&
sal_uInt8(pBuf[2]) == 0xBF)
{
eCharSet = RTL_TEXTENCODING_UTF8;
nHead = 3;
}
else if (sal_uInt8(pBuf[0]) == 0xFE && sal_uInt8(pBuf[1]) == 0xFF)
{
eCharSet = RTL_TEXTENCODING_UCS2;
bLE = false;
nHead = 2;
}
else if (sal_uInt8(pBuf[1]) == 0xFE && sal_uInt8(pBuf[0]) == 0xFF)
{
eCharSet = RTL_TEXTENCODING_UCS2;
nHead = 2;
}
pBuf+=nHead;
rLen-=nHead;
}
bool bCR = false, bLF = false, bIsBareUnicode = false;
if (eCharSet != RTL_TEXTENCODING_DONTKNOW)
{
boost::scoped_array<sal_Unicode> aWork(new sal_Unicode[rLen+1]);
sal_Unicode *pNewBuf = aWork.get();
sal_Size nNewLen;
if (eCharSet != RTL_TEXTENCODING_UCS2)
{
nNewLen = rLen;
rtl_TextToUnicodeConverter hConverter =
rtl_createTextToUnicodeConverter(eCharSet);
rtl_TextToUnicodeContext hContext =
rtl_createTextToUnicodeContext(hConverter);
sal_Size nCntBytes;
sal_uInt32 nInfo;
nNewLen = rtl_convertTextToUnicode( hConverter, hContext, pBuf,
rLen, pNewBuf, nNewLen,
(RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_DEFAULT |
RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_DEFAULT |
RTL_TEXTTOUNICODE_FLAGS_INVALID_DEFAULT), &nInfo, &nCntBytes);
rtl_destroyTextToUnicodeContext(hConverter, hContext);
rtl_destroyTextToUnicodeConverter(hConverter);
}
else
{
nNewLen = rLen/2;
memcpy(pNewBuf, pBuf, rLen);
#ifdef OSL_LITENDIAN
bool bNativeLE = true;
#else
bool bNativeLE = false;
#endif
if (bLE != bNativeLE)
{
bSwap = true;
sal_Char* pF = (sal_Char*)pNewBuf;
sal_Char* pN = pF+1;
for(xub_StrLen n = 0; n < nNewLen; ++n, pF+=2, pN+=2)
{
sal_Char c = *pF;
*pF = *pN;
*pN = c;
}
}
}
for (sal_uLong nCnt = 0; nCnt < nNewLen; ++nCnt, ++pNewBuf)
{
switch (*pNewBuf)
{
case 0xA:
bLF = true;
break;
case 0xD:
bCR = true;
break;
default:
break;
}
}
}
else
{
for( sal_uLong nCnt = 0; nCnt < rLen; ++nCnt, ++pBuf )
{
switch (*pBuf)
{
case 0x0:
if( nCnt + 1 < rLen && !*(pBuf+1) )
return 0;
bIsBareUnicode = true;
break;
case 0xA:
bLF = true;
break;
case 0xD:
bCR = true;
break;
case 0xC:
case 0x1A:
case 0x9:
break;
default:
break;
}
}
}
LineEnd eSysLE = GetSystemLineEnd();
LineEnd eLineEnd;
if (!bCR && !bLF)
eLineEnd = eSysLE;
else
eLineEnd = bCR ? ( bLF ? LINEEND_CRLF : LINEEND_CR ) : LINEEND_LF;
if (pCharSet)
*pCharSet = eCharSet;
if (pSwap)
*pSwap = bSwap;
if (pLineEnd)
*pLineEnd = eLineEnd;
return bEncodedFilter || (!bIsBareUnicode && eSysLE == eLineEnd);
}
const SfxFilter* SwIoSystem::GetTextFilter( const sal_Char* pBuf, sal_uLong nLen)
{
bool bAuto = IsDetectableText(pBuf, nLen);
const sal_Char* pNm = bAuto ? FILTER_TEXT : FILTER_TEXT_DLG;
return SwIoSystem::GetFilterOfFormat( OUString::createFromAscii(pNm), 0 );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|