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2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
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6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
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11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
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16 * KIND, either express or implied. See the License for the
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21
22
23
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_io.hxx"
26
27
28 #include <string.h>
29 #include <osl/mutex.hxx>
30 #include <osl/diagnose.h>
31
32 #include <rtl/unload.h>
33
34 #include <uno/mapping.hxx>
35
36 #include <cppuhelper/factory.hxx>
37 #include <cppuhelper/implbase3.hxx>
38 #include <cppuhelper/implementationentry.hxx>
39
40 #include <rtl/textenc.h>
41 #include <rtl/tencinfo.h>
42
43 #include <com/sun/star/io/XTextInputStream.hpp>
44 #include <com/sun/star/io/XActiveDataSink.hpp>
45 #include <com/sun/star/lang/XServiceInfo.hpp>
46
47
48 #define IMPLEMENTATION_NAME "com.sun.star.comp.io.TextInputStream"
49 #define SERVICE_NAME "com.sun.star.io.TextInputStream"
50
51 using namespace ::osl;
52 using namespace ::rtl;
53 using namespace ::cppu;
54 using namespace ::com::sun::star::uno;
55 using namespace ::com::sun::star::lang;
56 using namespace ::com::sun::star::io;
57 using namespace ::com::sun::star::registry;
58
59 namespace io_TextInputStream
60 {
61 rtl_StandardModuleCount g_moduleCount = MODULE_COUNT_INIT;
62
63 //===========================================================================
64 // Implementation XTextInputStream
65
66 typedef WeakImplHelper3< XTextInputStream, XActiveDataSink, XServiceInfo > TextInputStreamHelper;
67 class OCommandEnvironment;
68
69 #define INITIAL_UNICODE_BUFFER_CAPACITY 0x100
70 #define READ_BYTE_COUNT 0x100
71
72 class OTextInputStream : public TextInputStreamHelper
73 {
74 Reference< XInputStream > mxStream;
75
76 // Encoding
77 OUString mEncoding;
78 sal_Bool mbEncodingInitialized;
79 rtl_TextToUnicodeConverter mConvText2Unicode;
80 rtl_TextToUnicodeContext mContextText2Unicode;
81 Sequence<sal_Int8> mSeqSource;
82
83 // Internal buffer for characters that are already converted successfully
84 sal_Unicode* mpBuffer;
85 sal_Int32 mnBufferSize;
86 sal_Int32 mnCharsInBuffer;
87 sal_Bool mbReachedEOF;
88
89 void implResizeBuffer( void );
90 OUString implReadString( const Sequence< sal_Unicode >& Delimiters,
91 sal_Bool bRemoveDelimiter, sal_Bool bFindLineEnd )
92 throw(IOException, RuntimeException);
93 sal_Int32 implReadNext() throw(IOException, RuntimeException);
94
95 public:
96 OTextInputStream();
97 virtual ~OTextInputStream();
98
99 // Methods XTextInputStream
100 virtual OUString SAL_CALL readLine( )
101 throw(IOException, RuntimeException);
102 virtual OUString SAL_CALL readString( const Sequence< sal_Unicode >& Delimiters, sal_Bool bRemoveDelimiter )
103 throw(IOException, RuntimeException);
104 virtual sal_Bool SAL_CALL isEOF( )
105 throw(IOException, RuntimeException);
106 virtual void SAL_CALL setEncoding( const OUString& Encoding ) throw(RuntimeException);
107
108 // Methods XInputStream
109 virtual sal_Int32 SAL_CALL readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
110 throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException);
111 virtual sal_Int32 SAL_CALL readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
112 throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException);
113 virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip )
114 throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException);
115 virtual sal_Int32 SAL_CALL available( )
116 throw(NotConnectedException, IOException, RuntimeException);
117 virtual void SAL_CALL closeInput( )
118 throw(NotConnectedException, IOException, RuntimeException);
119
120 // Methods XActiveDataSink
121 virtual void SAL_CALL setInputStream( const Reference< XInputStream >& aStream )
122 throw(RuntimeException);
123 virtual Reference< XInputStream > SAL_CALL getInputStream()
124 throw(RuntimeException);
125
126 // Methods XServiceInfo
127 virtual OUString SAL_CALL getImplementationName() throw();
128 virtual Sequence< OUString > SAL_CALL getSupportedServiceNames(void) throw();
129 virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) throw();
130 };
131
OTextInputStream()132 OTextInputStream::OTextInputStream()
133 : mSeqSource( READ_BYTE_COUNT ), mpBuffer( NULL ), mnBufferSize( 0 )
134 , mnCharsInBuffer( 0 ), mbReachedEOF( sal_False )
135 {
136 g_moduleCount.modCnt.acquire( &g_moduleCount.modCnt );
137 mbEncodingInitialized = false;
138 }
139
~OTextInputStream()140 OTextInputStream::~OTextInputStream()
141 {
142 if( mbEncodingInitialized )
143 {
144 rtl_destroyUnicodeToTextContext( mConvText2Unicode, mContextText2Unicode );
145 rtl_destroyUnicodeToTextConverter( mConvText2Unicode );
146 }
147 g_moduleCount.modCnt.release( &g_moduleCount.modCnt );
148 }
149
implResizeBuffer(void)150 void OTextInputStream::implResizeBuffer( void )
151 {
152 sal_Int32 mnNewBufferSize = mnBufferSize * 2;
153 sal_Unicode* pNewBuffer = new sal_Unicode[ mnNewBufferSize ];
154 memcpy( pNewBuffer, mpBuffer, mnCharsInBuffer * sizeof( sal_Unicode ) );
155 mpBuffer = pNewBuffer;
156 mnBufferSize = mnNewBufferSize;
157 }
158
159
160 //===========================================================================
161 // XTextInputStream
162
readLine()163 OUString OTextInputStream::readLine( )
164 throw(IOException, RuntimeException)
165 {
166 static Sequence< sal_Unicode > aDummySeq;
167 return implReadString( aDummySeq, sal_True, sal_True );
168 }
169
readString(const Sequence<sal_Unicode> & Delimiters,sal_Bool bRemoveDelimiter)170 OUString OTextInputStream::readString( const Sequence< sal_Unicode >& Delimiters, sal_Bool bRemoveDelimiter )
171 throw(IOException, RuntimeException)
172 {
173 return implReadString( Delimiters, bRemoveDelimiter, sal_False );
174 }
175
isEOF()176 sal_Bool OTextInputStream::isEOF()
177 throw(IOException, RuntimeException)
178 {
179 sal_Bool bRet = sal_False;
180 if( mnCharsInBuffer == 0 && mbReachedEOF )
181 bRet = sal_True;
182 return bRet;
183 }
184
185
implReadString(const Sequence<sal_Unicode> & Delimiters,sal_Bool bRemoveDelimiter,sal_Bool bFindLineEnd)186 OUString OTextInputStream::implReadString( const Sequence< sal_Unicode >& Delimiters,
187 sal_Bool bRemoveDelimiter, sal_Bool bFindLineEnd )
188 throw(IOException, RuntimeException)
189 {
190 OUString aRetStr;
191 if( !mbEncodingInitialized )
192 {
193 OUString aUtf8Str( RTL_CONSTASCII_USTRINGPARAM("utf8") );
194 setEncoding( aUtf8Str );
195 }
196 if( !mbEncodingInitialized )
197 return aRetStr;
198
199 if( !mpBuffer )
200 {
201 mnBufferSize = INITIAL_UNICODE_BUFFER_CAPACITY;
202 mpBuffer = new sal_Unicode[ mnBufferSize ];
203 }
204
205 // Only for bFindLineEnd
206 sal_Unicode cLineEndChar1 = 0x0D;
207 sal_Unicode cLineEndChar2 = 0x0A;
208
209 sal_Int32 nBufferReadPos = 0;
210 sal_Int32 nCopyLen = 0;
211 sal_Bool bFound = sal_False;
212 sal_Bool bFoundFirstLineEndChar = sal_False;
213 sal_Unicode cFirstLineEndChar = 0;
214 const sal_Unicode* pDelims = Delimiters.getConstArray();
215 const sal_Int32 nDelimCount = Delimiters.getLength();
216 while( !bFound )
217 {
218 // Still characters available?
219 if( nBufferReadPos == mnCharsInBuffer )
220 {
221 // Already reached EOF? Then we can't read any more
222 if( mbReachedEOF )
223 break;
224
225 // No, so read new characters
226 if( !implReadNext() )
227 break;
228 }
229
230 // Now there should be characters available
231 // (otherwise the loop should have been breaked before)
232 sal_Unicode c = mpBuffer[ nBufferReadPos++ ];
233
234 if( bFindLineEnd )
235 {
236 if( bFoundFirstLineEndChar )
237 {
238 bFound = sal_True;
239 nCopyLen = nBufferReadPos - 2;
240 if( c == cLineEndChar1 || c == cLineEndChar2 )
241 {
242 // Same line end char -> new line break
243 if( c == cFirstLineEndChar )
244 {
245 nBufferReadPos--;
246 }
247 }
248 else
249 {
250 // No second line end char
251 nBufferReadPos--;
252 }
253 }
254 else if( c == cLineEndChar1 || c == cLineEndChar2 )
255 {
256 bFoundFirstLineEndChar = sal_True;
257 cFirstLineEndChar = c;
258 }
259 }
260 else
261 {
262 for( sal_Int32 i = 0 ; i < nDelimCount ; i++ )
263 {
264 if( c == pDelims[ i ] )
265 {
266 bFound = sal_True;
267 nCopyLen = nBufferReadPos;
268 if( bRemoveDelimiter )
269 nCopyLen--;
270 }
271 }
272 }
273 }
274
275 // Nothing found? Return all
276 if( !nCopyLen && !bFound && mbReachedEOF )
277 nCopyLen = nBufferReadPos;
278
279 // Create string
280 if( nCopyLen )
281 aRetStr = OUString( mpBuffer, nCopyLen );
282
283 // Copy rest of buffer
284 memmove( mpBuffer, mpBuffer + nBufferReadPos,
285 (mnCharsInBuffer - nBufferReadPos) * sizeof( sal_Unicode ) );
286 mnCharsInBuffer -= nBufferReadPos;
287
288 return aRetStr;
289 }
290
291
implReadNext()292 sal_Int32 OTextInputStream::implReadNext()
293 throw(IOException, RuntimeException)
294 {
295 sal_Int32 nFreeBufferSize = mnBufferSize - mnCharsInBuffer;
296 if( nFreeBufferSize < READ_BYTE_COUNT )
297 implResizeBuffer();
298 nFreeBufferSize = mnBufferSize - mnCharsInBuffer;
299
300 try
301 {
302 sal_Int32 nBytesToRead = READ_BYTE_COUNT;
303 sal_Int32 nRead = mxStream->readSomeBytes( mSeqSource, nBytesToRead );
304 sal_Int32 nTotalRead = nRead;
305 if( nRead < nBytesToRead )
306 mbReachedEOF = sal_True;
307
308 // Try to convert
309 sal_uInt32 uiInfo;
310 sal_Size nSrcCvtBytes = 0;
311 sal_Size nTargetCount = 0;
312 sal_Size nSourceCount = 0;
313 while( sal_True )
314 {
315 const sal_Int8 *pbSource = mSeqSource.getConstArray();
316
317 // All invalid characters are transformed to the unicode undefined char
318 nTargetCount += rtl_convertTextToUnicode(
319 mConvText2Unicode,
320 mContextText2Unicode,
321 (const sal_Char*) &( pbSource[nSourceCount] ),
322 nTotalRead - nSourceCount,
323 mpBuffer + mnCharsInBuffer + nTargetCount,
324 nFreeBufferSize - nTargetCount,
325 RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_DEFAULT |
326 RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_DEFAULT |
327 RTL_TEXTTOUNICODE_FLAGS_INVALID_DEFAULT,
328 &uiInfo,
329 &nSrcCvtBytes );
330 nSourceCount += nSrcCvtBytes;
331
332 sal_Bool bCont = sal_False;
333 if( uiInfo & RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL )
334 {
335 implResizeBuffer();
336 bCont = sal_True;
337 }
338
339 if( uiInfo & RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOSMALL )
340 {
341 // read next byte
342 static Sequence< sal_Int8 > aOneByteSeq( 1 );
343 nRead = mxStream->readSomeBytes( aOneByteSeq, 1 );
344 if( nRead == 0 )
345 {
346 mbReachedEOF = sal_True;
347 break;
348 }
349
350 sal_Int32 nOldLen = mSeqSource.getLength();
351 nTotalRead++;
352 if( nTotalRead > nOldLen )
353 {
354 mSeqSource.realloc( nTotalRead );
355 }
356 mSeqSource.getArray()[ nOldLen ] = aOneByteSeq.getConstArray()[ 0 ];
357 pbSource = mSeqSource.getConstArray();
358 bCont = sal_True;
359 }
360
361 if( bCont )
362 continue;
363 break;
364 }
365
366 mnCharsInBuffer += nTargetCount;
367 return nTargetCount;
368 }
369 catch( NotConnectedException& )
370 {
371 throw IOException();
372 //throw IOException( L"OTextInputStream::implReadString failed" );
373 }
374 catch( BufferSizeExceededException& )
375 {
376 throw IOException();
377 }
378 }
379
setEncoding(const OUString & Encoding)380 void OTextInputStream::setEncoding( const OUString& Encoding )
381 throw(RuntimeException)
382 {
383 OString aOEncodingStr = OUStringToOString( Encoding, RTL_TEXTENCODING_ASCII_US );
384 rtl_TextEncoding encoding = rtl_getTextEncodingFromMimeCharset( aOEncodingStr.getStr() );
385 if( RTL_TEXTENCODING_DONTKNOW == encoding )
386 return;
387
388 mbEncodingInitialized = true;
389 mConvText2Unicode = rtl_createTextToUnicodeConverter( encoding );
390 mContextText2Unicode = rtl_createTextToUnicodeContext( mConvText2Unicode );
391 mEncoding = Encoding;
392 }
393
394 //===========================================================================
395 // XInputStream
396
readBytes(Sequence<sal_Int8> & aData,sal_Int32 nBytesToRead)397 sal_Int32 OTextInputStream::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
398 throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
399 {
400 return mxStream->readBytes( aData, nBytesToRead );
401 }
402
readSomeBytes(Sequence<sal_Int8> & aData,sal_Int32 nMaxBytesToRead)403 sal_Int32 OTextInputStream::readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
404 throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
405 {
406 return mxStream->readSomeBytes( aData, nMaxBytesToRead );
407 }
408
skipBytes(sal_Int32 nBytesToSkip)409 void OTextInputStream::skipBytes( sal_Int32 nBytesToSkip )
410 throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
411 {
412 mxStream->skipBytes( nBytesToSkip );
413 }
414
available()415 sal_Int32 OTextInputStream::available( )
416 throw(NotConnectedException, IOException, RuntimeException)
417 {
418 return mxStream->available();
419 }
420
closeInput()421 void OTextInputStream::closeInput( )
422 throw(NotConnectedException, IOException, RuntimeException)
423 {
424 mxStream->closeInput();
425 }
426
427
428 //===========================================================================
429 // XActiveDataSink
430
setInputStream(const Reference<XInputStream> & aStream)431 void OTextInputStream::setInputStream( const Reference< XInputStream >& aStream )
432 throw(RuntimeException)
433 {
434 mxStream = aStream;
435 }
436
getInputStream()437 Reference< XInputStream > OTextInputStream::getInputStream()
438 throw(RuntimeException)
439 {
440 return mxStream;
441 }
442
443
TextInputStream_CreateInstance(const Reference<XComponentContext> &)444 Reference< XInterface > SAL_CALL TextInputStream_CreateInstance( const Reference< XComponentContext > &)
445 {
446 return Reference < XInterface >( ( OWeakObject * ) new OTextInputStream() );
447 }
448
TextInputStream_getImplementationName()449 OUString TextInputStream_getImplementationName()
450 {
451 return OUString( RTL_CONSTASCII_USTRINGPARAM( IMPLEMENTATION_NAME ) );
452 }
453
TextInputStream_getSupportedServiceNames()454 Sequence< OUString > TextInputStream_getSupportedServiceNames()
455 {
456 static Sequence < OUString > *pNames = 0;
457 if( ! pNames )
458 {
459 MutexGuard guard( Mutex::getGlobalMutex() );
460 if( !pNames )
461 {
462 static Sequence< OUString > seqNames(1);
463 seqNames.getArray()[0] = OUString( RTL_CONSTASCII_USTRINGPARAM( SERVICE_NAME ) );
464 pNames = &seqNames;
465 }
466 }
467 return *pNames;
468 }
469
getImplementationName()470 OUString OTextInputStream::getImplementationName() throw()
471 {
472 return TextInputStream_getImplementationName();
473 }
474
supportsService(const OUString & ServiceName)475 sal_Bool OTextInputStream::supportsService(const OUString& ServiceName) throw()
476 {
477 Sequence< OUString > aSNL = getSupportedServiceNames();
478 const OUString * pArray = aSNL.getConstArray();
479
480 for( sal_Int32 i = 0; i < aSNL.getLength(); i++ )
481 if( pArray[i] == ServiceName )
482 return sal_True;
483
484 return sal_False;
485 }
486
getSupportedServiceNames(void)487 Sequence< OUString > OTextInputStream::getSupportedServiceNames(void) throw()
488 {
489 return TextInputStream_getSupportedServiceNames();
490 }
491
492 }
493
494 using namespace io_TextInputStream;
495
496 static struct ImplementationEntry g_entries[] =
497 {
498 {
499 TextInputStream_CreateInstance, TextInputStream_getImplementationName ,
500 TextInputStream_getSupportedServiceNames, createSingleComponentFactory ,
501 &g_moduleCount.modCnt , 0
502 },
503 { 0, 0, 0, 0, 0, 0 }
504 };
505
506 extern "C"
507 {
component_canUnload(TimeValue * pTime)508 SAL_DLLPUBLIC_EXPORT sal_Bool SAL_CALL component_canUnload( TimeValue *pTime )
509 {
510 return g_moduleCount.canUnload( &g_moduleCount , pTime );
511 }
512
513 //==================================================================================================
component_getImplementationEnvironment(const sal_Char ** ppEnvTypeName,uno_Environment **)514 SAL_DLLPUBLIC_EXPORT void SAL_CALL component_getImplementationEnvironment(
515 const sal_Char ** ppEnvTypeName, uno_Environment ** )
516 {
517 *ppEnvTypeName = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
518 }
519 //==================================================================================================
component_getFactory(const sal_Char * pImplName,void * pServiceManager,void * pRegistryKey)520 SAL_DLLPUBLIC_EXPORT void * SAL_CALL component_getFactory(
521 const sal_Char * pImplName, void * pServiceManager, void * pRegistryKey )
522 {
523 return component_getFactoryHelper( pImplName, pServiceManager, pRegistryKey , g_entries );
524 }
525 }
526
527
528