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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #ifndef SC_XESTREAM_HXX
21 : #define SC_XESTREAM_HXX
22 :
23 : #include <com/sun/star/beans/NamedValue.hpp>
24 :
25 : #include <map>
26 : #include <stack>
27 : #include <string>
28 :
29 : #include <oox/core/xmlfilterbase.hxx>
30 : #include <oox/token/tokens.hxx>
31 : #include <sax/fshelper.hxx>
32 :
33 : #include "xlstream.hxx"
34 : #include "xestring.hxx"
35 :
36 : #include <filter/msfilter/mscodec.hxx>
37 : #include <vector>
38 :
39 : /* ============================================================================
40 : Output stream class for Excel export
41 : - CONTINUE record handling
42 : ============================================================================ */
43 :
44 : class XclExpRoot;
45 : class XclExpBiff8Encrypter;
46 : typedef boost::shared_ptr< XclExpBiff8Encrypter > XclExpEncrypterRef;
47 :
48 : /** This class is used to export Excel record streams.
49 : @descr An instance is constructed with an SvStream and the maximum size of Excel
50 : record contents (in BIFF5: 2080 bytes, in BIFF8: 8224 bytes).
51 :
52 : To start writing a record call StartRecord(). Parameters are the record identifier
53 : and any calculated record size. This is for optimizing the write process: if the real
54 : written data has the same size as the calculated, the stream will not seek back and
55 : update the record size field. But it is not mandatory to calculate a size. Each
56 : record must be closed by calling EndRecord(). This will check (and update) the record
57 : size field.
58 :
59 : If some data exceeds the record size limit, a CONTINUE record is started automatically
60 : and the new data will be written to this record.
61 :
62 : If specific data pieces must not be splitted, use SetSliceLen(). For instance:
63 : To write a sequence of 16-bit values, where 4 values form a unit and cannot be
64 : split, call SetSliceLen( 8 ) first (4*2 bytes == 8).
65 :
66 : To write unicode character arrays, call WriteUnicodeBuffer(). It creates CONTINUE
67 : records and repeats the unicode string flag byte automatically. This function is used
68 : for instance from the class XclExpString which can write complete unicode strings.
69 : */
70 : class XclExpStream
71 : {
72 : public:
73 : /** Constructs the Excel record export stream.
74 : @param rOutStrm The system output stream to write to.
75 : @param nMaxRecSize The maximum allowed size of record content (depending on BIFF type).
76 : If 0 is passed, the record size will be set automatically, depending on the current BIFF type. */
77 : XclExpStream(
78 : SvStream& rOutStrm,
79 : const XclExpRoot& rRoot,
80 : sal_uInt16 nMaxRecSize = 0 );
81 :
82 : ~XclExpStream();
83 :
84 : /** Returns the filter root data. */
85 0 : inline const XclExpRoot& GetRoot() const { return mrRoot; }
86 :
87 : /** Starts a new record: writes header data, stores calculated record size. */
88 : void StartRecord( sal_uInt16 nRecId, sal_Size nRecSize );
89 : /** Checks and corrects real record length. Must be called everytime a record is finished. */
90 : void EndRecord();
91 :
92 : /** Returns the position inside of current record (starts by 0 in every CONTINUE). */
93 0 : inline sal_uInt16 GetRawRecPos() const { return mnCurrSize; }
94 :
95 : /** Returns the maximum size of a record. */
96 : inline sal_uInt16 GetMaxRecSize() const { return mnMaxRecSize; }
97 : /** Sets maximum record size (valid only for current record). */
98 : inline void SetMaxRecSize( sal_uInt16 nMax ) { mnCurrMaxSize = nMax; }
99 : /** Sets maximum size of CONTINUE records (valid only for current record). */
100 : inline void SetMaxContSize( sal_uInt16 nMax ) { mnMaxContSize = nMax; }
101 :
102 : /** Sets data slice length. 0 = no slices. */
103 : void SetSliceSize( sal_uInt16 nSize );
104 :
105 : XclExpStream& operator<<( sal_Int8 nValue );
106 : XclExpStream& operator<<( sal_uInt8 nValue );
107 : XclExpStream& operator<<( sal_Int16 nValue );
108 : XclExpStream& operator<<( sal_uInt16 nValue );
109 : XclExpStream& operator<<( sal_Int32 nValue );
110 : XclExpStream& operator<<( sal_uInt32 nValue );
111 : XclExpStream& operator<<( float fValue );
112 : XclExpStream& operator<<( double fValue );
113 :
114 : /** Writes nBytes bytes from memory. */
115 : sal_Size Write( const void* pData, sal_Size nBytes );
116 : /** Writes a sequence of nBytes zero bytes (respects slice setting). */
117 : void WriteZeroBytes( sal_Size nBytes );
118 :
119 : void WriteZeroBytesToRecord( sal_Size nBytes );
120 :
121 : /** Copies nBytes bytes from current position of the stream rInStrm.
122 : @descr Omitting the second parameter means: read to end of stream. */
123 : void CopyFromStream( SvStream& rInStrm, sal_uInt64 nBytes = STREAM_SEEK_TO_END );
124 :
125 : // *** unicode string export is realized with helper class XclExpString ***
126 : // (slice length setting has no effect here -> disabled automatically)
127 :
128 : /** Writes Unicode buffer as 8/16 bit, repeats nFlags at start of a CONTINUE record. */
129 : void WriteUnicodeBuffer( const ScfUInt16Vec& rBuffer, sal_uInt8 nFlags );
130 :
131 : // *** write 8-bit-strings ***
132 : // (slice length setting has no effect here -> disabled automatically)
133 :
134 : /** Writes string length field and OString buffer. */
135 : void WriteByteString(
136 : const OString& rString,
137 : sal_uInt16 nMaxLen = 0x00FF,
138 : bool b16BitCount = false );
139 :
140 : /** Writes 8-bit character buffer. */
141 : void WriteCharBuffer( const ScfUInt8Vec& rBuffer );
142 :
143 : // *** SvStream access ***
144 :
145 : /** Sets position of system stream (only allowed outside of records). */
146 : sal_uInt64 SetSvStreamPos(sal_uInt64 nPos);
147 : /** Returns the absolute position of the system stream. */
148 0 : inline sal_uInt64 GetSvStreamPos() const { return mrStrm.Tell(); }
149 :
150 : void SetEncrypter( XclExpEncrypterRef xEncrypter );
151 :
152 : bool HasValidEncrypter() const;
153 :
154 : void EnableEncryption( bool bEnable = true );
155 :
156 : void DisableEncryption();
157 :
158 : private:
159 : /** Writes header data, internal setup. */
160 : void InitRecord( sal_uInt16 nRecId );
161 : /** Rewrites correct record length, if different from calculated. */
162 : void UpdateRecSize();
163 : /** Recalculates mnCurrSize and mnSliceSize. */
164 : void UpdateSizeVars( sal_Size nSize );
165 : /** Writes CONTINUE header, internal setup. */
166 : void StartContinue();
167 : /** Refreshes counter vars, creates CONTINUE records. */
168 : void PrepareWrite( sal_uInt16 nSize );
169 : /** Creates CONTINUE record at end of record.
170 : @return Maximum data block size remaining. */
171 : sal_uInt16 PrepareWrite();
172 :
173 : /** Writes a raw sequence of zero bytes. */
174 : void WriteRawZeroBytes( sal_Size nBytes );
175 :
176 : private:
177 : SvStream& mrStrm; /// Reference to the system output stream.
178 : const XclExpRoot& mrRoot; /// Filter root data.
179 :
180 : bool mbUseEncrypter;
181 : XclExpEncrypterRef mxEncrypter;
182 :
183 : // length data
184 : sal_uInt16 mnMaxRecSize; /// Maximum size of record content.
185 : sal_uInt16 mnMaxContSize; /// Maximum size of CONTINUE content.
186 : sal_uInt16 mnCurrMaxSize; /// Current maximum, either mnMaxRecSize or mnMaxContSize.
187 : sal_uInt16 mnMaxSliceSize; /// Maximum size of data slices (parts that cannot be split).
188 : sal_uInt16 mnHeaderSize; /// Record size written in last record header.
189 : sal_uInt16 mnCurrSize; /// Count of bytes already written in current record.
190 : sal_uInt16 mnSliceSize; /// Count of bytes already written in current slice.
191 : sal_Size mnPredictSize; /// Predicted size received from calling function.
192 :
193 : // stream position data
194 : sal_Size mnLastSizePos; /// Stream position of size field in current header.
195 : bool mbInRec; /// true = currently writing inside of a record.
196 : };
197 :
198 : class XclExpBiff8Encrypter
199 : {
200 : public:
201 : explicit XclExpBiff8Encrypter( const XclExpRoot& rRoot );
202 : ~XclExpBiff8Encrypter();
203 :
204 : bool IsValid() const;
205 :
206 : void GetSaltDigest( sal_uInt8 pnSaltDigest[16] ) const;
207 : void GetSalt( sal_uInt8 pnSalt[16] ) const;
208 : void GetDocId( sal_uInt8 pnDocId[16] ) const;
209 :
210 : void Encrypt( SvStream& rStrm, sal_uInt8 nData );
211 : void Encrypt( SvStream& rStrm, sal_uInt16 nData );
212 : void Encrypt( SvStream& rStrm, sal_uInt32 nData );
213 :
214 : void Encrypt( SvStream& rStrm, sal_Int8 nData );
215 : void Encrypt( SvStream& rStrm, sal_Int16 nData );
216 : void Encrypt( SvStream& rStrm, sal_Int32 nData );
217 :
218 : void Encrypt( SvStream& rStrm, float fValue );
219 : void Encrypt( SvStream& rStrm, double fValue );
220 :
221 : void EncryptBytes( SvStream& rStrm, ::std::vector<sal_uInt8>& aBytes );
222 :
223 : private:
224 : void Init( const ::com::sun::star::uno::Sequence< ::com::sun::star::beans::NamedValue >& aEncryptionData );
225 :
226 : sal_uInt32 GetBlockPos( sal_Size nStrmPos ) const;
227 : sal_uInt16 GetOffsetInBlock( sal_Size nStrmPos ) const;
228 :
229 : private:
230 : ::msfilter::MSCodec_Std97 maCodec; /// Crypto algorithm implementation.
231 : sal_uInt8 mpnDocId[16];
232 : sal_uInt8 mpnSalt[16];
233 : sal_uInt8 mpnSaltDigest[16];
234 :
235 : sal_uInt64 mnOldPos; /// Last known stream position
236 : bool mbValid;
237 : };
238 :
239 :
240 :
241 :
242 : // `s.GetChar(0) != 0` needed because some strings on export only contain NULL.
243 : #define XESTRING_TO_PSZ(s) \
244 : (s.Len() && s.GetChar( 0 ) != 0 ? XclXmlUtils::ToOString( s ).getStr() : NULL)
245 :
246 : class ScAddress;
247 : class ScDocShell;
248 : class ScDocument;
249 : class ScFormulaCell;
250 : class ScRange;
251 : class ScRangeList;
252 : class ScTokenArray;
253 : struct XclAddress;
254 : struct XclFontData;
255 : struct XclRange;
256 : class XclRangeList;
257 :
258 : class XclXmlUtils
259 : {
260 : XclXmlUtils();
261 : ~XclXmlUtils();
262 : XclXmlUtils(const XclXmlUtils&);
263 : XclXmlUtils& operator=(const XclXmlUtils&);
264 : public:
265 : static void GetFormulaTypeAndValue( ScFormulaCell& rCell, const char*& sType, OUString& rValue);
266 : static OUString GetStreamName( const char* sStreamDir, const char* sStream, sal_Int32 nId );
267 :
268 : static OString ToOString( const Color& rColor );
269 : static OString ToOString( const OUString& s );
270 : static OString ToOString( const ScfUInt16Vec& rBuffer );
271 : static OString ToOString( const ScAddress& rRange );
272 : static OString ToOString( const ScRange& rRange );
273 : static OString ToOString( const ScRangeList& rRangeList );
274 : static OString ToOString( const XclAddress& rAddress );
275 : static OString ToOString( const XclExpString& s );
276 : static OString ToOString( const XclRange& rRange );
277 : static OString ToOString( const XclRangeList& rRangeList );
278 :
279 : static OUString ToOUString( const char* s );
280 : static OUString ToOUString( const ScfUInt16Vec& rBuffer, sal_Int32 nStart = 0, sal_Int32 nLength = -1 );
281 : static OUString ToOUString( ScDocument& rDocument, const ScAddress& rAddress, const ScTokenArray* pTokenArray );
282 : static OUString ToOUString( const XclExpString& s );
283 : static const char* ToPsz( bool b );
284 :
285 : static sax_fastparser::FSHelperPtr WriteElement( sax_fastparser::FSHelperPtr pStream, sal_Int32 nElement, sal_Int32 nValue );
286 : static sax_fastparser::FSHelperPtr WriteElement( sax_fastparser::FSHelperPtr pStream, sal_Int32 nElement, sal_Int64 nValue );
287 : static sax_fastparser::FSHelperPtr WriteElement( sax_fastparser::FSHelperPtr pStream, sal_Int32 nElement, const char* sValue );
288 : static sax_fastparser::FSHelperPtr WriteFontData( sax_fastparser::FSHelperPtr pStream, const XclFontData& rFontData, sal_Int32 nNameId );
289 : };
290 :
291 : class XclExpXmlStream : public oox::core::XmlFilterBase
292 : {
293 : public:
294 : XclExpXmlStream( const com::sun::star::uno::Reference< com::sun::star::uno::XComponentContext >& rCC );
295 : virtual ~XclExpXmlStream();
296 :
297 : /** Returns the filter root data. */
298 0 : inline const XclExpRoot& GetRoot() const { return *mpRoot; }
299 :
300 : sax_fastparser::FSHelperPtr& GetCurrentStream();
301 : void PushStream( sax_fastparser::FSHelperPtr aStream );
302 : void PopStream();
303 :
304 : sax_fastparser::FSHelperPtr GetStreamForPath( const OUString& rPath );
305 :
306 : // FIXME: if written through this cannot be checked for well-formedness
307 0 : sax_fastparser::FSHelperPtr& WriteAttributes( sal_Int32 nAttribute, const char* value, FSEND_t )
308 0 : { return WriteAttributesInternal( nAttribute, value, FSEND_internal ); }
309 : sax_fastparser::FSHelperPtr& WriteAttributes( sal_Int32 nAttribute, const OString& value, FSEND_t )
310 : { return WriteAttributesInternal( nAttribute, value.getStr(), FSEND_internal ); }
311 :
312 : sax_fastparser::FSHelperPtr CreateOutputStream (
313 : const OUString& sFullStream,
314 : const OUString& sRelativeStream,
315 : const ::com::sun::star::uno::Reference< ::com::sun::star::io::XOutputStream >& xParentRelation,
316 : const char* sContentType,
317 : const char* sRelationshipType,
318 : OUString* pRelationshipId = NULL );
319 :
320 : // ignore
321 : virtual bool exportDocument() throw (std::exception) SAL_OVERRIDE;
322 :
323 : // only needed for import; ignore
324 : virtual bool importDocument() throw() SAL_OVERRIDE;
325 : virtual oox::vml::Drawing* getVmlDrawing() SAL_OVERRIDE;
326 : virtual const oox::drawingml::Theme* getCurrentTheme() const SAL_OVERRIDE;
327 : virtual const oox::drawingml::table::TableStyleListPtr getTableStyles() SAL_OVERRIDE;
328 : virtual oox::drawingml::chart::ChartConverter* getChartConverter() SAL_OVERRIDE;
329 :
330 : /*
331 : Now create all the overloads in a typesafe way (i.e. without varargs) by creating a number of overloads
332 : up to a certain reasonable limit (feel free to raise it). This would be a lot easier with C++11 vararg templates.
333 : */
334 : // now overloads for 2 and more pairs
335 : #define SAX_ARGS_FUNC_DECL( argsdecl, argsuse ) \
336 : sax_fastparser::FSHelperPtr& WriteAttributes( argsdecl, FSEND_t ) \
337 : { return WriteAttributesInternal( argsuse, FSEND_internal ); }
338 : #define SAX_ARGS_FUNC_NUM( decl1, decl2, use1, use2, convert, num ) \
339 : SAX_ARGS_FUNC_DECL( SAX_ARGS_ARG##num( decl1, decl2, ), SAX_ARGS_ARG##num( use1, use2, convert ))
340 : #define SAX_ARGS_FUNC_SUBST( type, convert, num ) \
341 : SAX_ARGS_FUNC_NUM( sal_Int32 attribute, type value, attribute, value, convert, num )
342 : #define SAX_ARGS_FUNC( arg, convert ) SAX_ARGS_FUNC_SUBST( arg, convert, 2 ) \
343 : SAX_ARGS_FUNC_SUBST( arg, convert, 3 ) SAX_ARGS_FUNC_SUBST( arg, convert, 4 ) \
344 : SAX_ARGS_FUNC_SUBST( arg, convert, 5 ) SAX_ARGS_FUNC_SUBST( arg, convert, 6 ) \
345 : SAX_ARGS_FUNC_SUBST( arg, convert, 7 ) SAX_ARGS_FUNC_SUBST( arg, convert, 8 ) \
346 : SAX_ARGS_FUNC_SUBST( arg, convert, 9 ) SAX_ARGS_FUNC_SUBST( arg, convert, 10 ) \
347 : SAX_ARGS_FUNC_SUBST( arg, convert, 11 ) SAX_ARGS_FUNC_SUBST( arg, convert, 12 ) \
348 : SAX_ARGS_FUNC_SUBST( arg, convert, 13 ) SAX_ARGS_FUNC_SUBST( arg, convert, 14 ) \
349 : SAX_ARGS_FUNC_SUBST( arg, convert, 15 ) SAX_ARGS_FUNC_SUBST( arg, convert, 16 ) \
350 : SAX_ARGS_FUNC_SUBST( arg, convert, 17 ) SAX_ARGS_FUNC_SUBST( arg, convert, 18 ) \
351 : SAX_ARGS_FUNC_SUBST( arg, convert, 19 ) SAX_ARGS_FUNC_SUBST( arg, convert, 20 ) \
352 : SAX_ARGS_FUNC_SUBST( arg, convert, 21 ) SAX_ARGS_FUNC_SUBST( arg, convert, 22 )
353 0 : SAX_ARGS_FUNC( const char*, )
354 : SAX_ARGS_FUNC( const OString&, .getStr() )
355 : #undef SAX_ARGS_FUNC_DECL
356 : #undef SAX_ARGS_FUNC_NUM
357 : #undef SAX_ARGS_FUNC_SUBST
358 : #undef SAX_ARGS_FUNC
359 :
360 : private:
361 : virtual ::oox::ole::VbaProject* implCreateVbaProject() const SAL_OVERRIDE;
362 : virtual OUString implGetImplementationName() const SAL_OVERRIDE;
363 : ScDocShell *getDocShell();
364 : sax_fastparser::FSHelperPtr& WriteAttributesInternal( sal_Int32 nAttribute, ... );
365 :
366 : typedef std::map< OUString,
367 : std::pair< OUString,
368 : sax_fastparser::FSHelperPtr > > XclExpXmlPathToStateMap;
369 :
370 : const XclExpRoot* mpRoot;
371 : std::stack< sax_fastparser::FSHelperPtr > maStreams;
372 : XclExpXmlPathToStateMap maOpenedStreamMap;
373 : };
374 :
375 : #endif
376 :
377 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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