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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 : #include "oox/helper/textinputstream.hxx"
21 :
22 : #include <com/sun/star/io/XActiveDataSink.hpp>
23 : #include <com/sun/star/io/TextInputStream.hpp>
24 : #include <cppuhelper/implbase1.hxx>
25 : #include <rtl/tencinfo.h>
26 : #include "oox/helper/binaryinputstream.hxx"
27 :
28 : namespace oox {
29 :
30 : using namespace ::com::sun::star::io;
31 : using namespace ::com::sun::star::lang;
32 : using namespace ::com::sun::star::uno;
33 :
34 : namespace {
35 :
36 : typedef ::cppu::WeakImplHelper1< XInputStream > UnoBinaryInputStream_BASE;
37 :
38 : /** Implementation of a UNO input stream wrapping a binary input stream.
39 : */
40 736 : class UnoBinaryInputStream : public UnoBinaryInputStream_BASE
41 : {
42 : public:
43 : explicit UnoBinaryInputStream( BinaryInputStream& rInStrm );
44 :
45 : virtual sal_Int32 SAL_CALL readBytes( Sequence< sal_Int8 >& rData, sal_Int32 nBytesToRead )
46 : throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
47 : virtual sal_Int32 SAL_CALL readSomeBytes( Sequence< sal_Int8 >& rData, sal_Int32 nMaxBytesToRead )
48 : throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
49 : virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip )
50 : throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
51 : virtual sal_Int32 SAL_CALL available()
52 : throw (NotConnectedException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
53 : virtual void SAL_CALL closeInput()
54 : throw (NotConnectedException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
55 :
56 : private:
57 : void ensureConnected() const throw (NotConnectedException);
58 :
59 : private:
60 : BinaryInputStream* mpInStrm;
61 : };
62 :
63 368 : UnoBinaryInputStream::UnoBinaryInputStream( BinaryInputStream& rInStrm ) :
64 368 : mpInStrm( &rInStrm )
65 : {
66 368 : }
67 :
68 0 : sal_Int32 SAL_CALL UnoBinaryInputStream::readBytes( Sequence< sal_Int8 >& rData, sal_Int32 nBytesToRead )
69 : throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
70 : {
71 0 : ensureConnected();
72 0 : return mpInStrm->readData( rData, nBytesToRead, 1 );
73 : }
74 :
75 2296 : sal_Int32 SAL_CALL UnoBinaryInputStream::readSomeBytes( Sequence< sal_Int8 >& rData, sal_Int32 nMaxBytesToRead )
76 : throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
77 : {
78 2296 : ensureConnected();
79 2296 : return mpInStrm->readData( rData, nMaxBytesToRead, 1 );
80 : }
81 :
82 0 : void SAL_CALL UnoBinaryInputStream::skipBytes( sal_Int32 nBytesToSkip )
83 : throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
84 : {
85 0 : ensureConnected();
86 0 : mpInStrm->skip( nBytesToSkip, 1 );
87 0 : }
88 :
89 0 : sal_Int32 SAL_CALL UnoBinaryInputStream::available() throw (NotConnectedException, IOException, RuntimeException, std::exception)
90 : {
91 0 : ensureConnected();
92 0 : throw RuntimeException( "Functionality not supported", Reference< XInputStream >() );
93 : }
94 :
95 0 : void SAL_CALL UnoBinaryInputStream::closeInput() throw (NotConnectedException, IOException, RuntimeException, std::exception)
96 : {
97 0 : ensureConnected();
98 0 : mpInStrm->close();
99 0 : mpInStrm = 0;
100 0 : }
101 :
102 2296 : void UnoBinaryInputStream::ensureConnected() const throw (NotConnectedException)
103 : {
104 2296 : if( !mpInStrm )
105 0 : throw NotConnectedException( "Stream closed" );
106 2296 : }
107 :
108 : } // namespace
109 :
110 0 : TextInputStream::TextInputStream( const Reference< XComponentContext >& rxContext, const Reference< XInputStream >& rxInStrm, rtl_TextEncoding eTextEnc )
111 : {
112 0 : init( rxContext, rxInStrm, eTextEnc );
113 0 : }
114 :
115 368 : TextInputStream::TextInputStream( const Reference< XComponentContext >& rxContext, BinaryInputStream& rInStrm, rtl_TextEncoding eTextEnc )
116 : {
117 368 : init( rxContext, new UnoBinaryInputStream( rInStrm ), eTextEnc );
118 368 : }
119 :
120 368 : TextInputStream::~TextInputStream()
121 : {
122 368 : }
123 :
124 14628 : bool TextInputStream::isEof() const
125 : {
126 14628 : if( mxTextStrm.is() ) try
127 : {
128 14628 : return mxTextStrm->isEOF();
129 : }
130 0 : catch (const Exception&)
131 : {
132 : }
133 0 : return true;
134 : }
135 :
136 14324 : OUString TextInputStream::readLine()
137 : {
138 14324 : if( mxTextStrm.is() ) try
139 : {
140 : /* The function createFinalString() adds a character that may have
141 : been buffered in the previous call of readToChar() (see below). */
142 14324 : return createFinalString( mxTextStrm->readLine() );
143 : }
144 0 : catch (const Exception&)
145 : {
146 0 : mxTextStrm.clear();
147 : }
148 0 : return OUString();
149 : }
150 :
151 0 : OUString TextInputStream::readToChar( sal_Unicode cChar, bool bIncludeChar )
152 : {
153 0 : if( mxTextStrm.is() ) try
154 : {
155 0 : Sequence< sal_Unicode > aDelimiters( 1 );
156 0 : aDelimiters[ 0 ] = cChar;
157 : /* Always get the delimiter character from the UNO text input stream.
158 : In difference to this implementation, it will not return it in the
159 : next call but silently skip it. If caller specifies to exclude the
160 : character in this call, it will be returned in the next call of one
161 : of the own member functions. The function createFinalString() adds
162 : a character that has been buffered in the previous call. */
163 0 : OUString aString = createFinalString( mxTextStrm->readString( aDelimiters, sal_False ) );
164 : // remove last character from string and remember it for next call
165 0 : if( !bIncludeChar && !aString.isEmpty() && (aString[ aString.getLength() - 1 ] == cChar) )
166 : {
167 0 : mcPendingChar = cChar;
168 0 : aString = aString.copy( 0, aString.getLength() - 1 );
169 : }
170 0 : return aString;
171 : }
172 0 : catch (const Exception&)
173 : {
174 0 : mxTextStrm.clear();
175 : }
176 0 : return OUString();
177 : }
178 :
179 376 : Reference< XTextInputStream2 > TextInputStream::createXTextInputStream(
180 : const Reference< XComponentContext >& rxContext, const Reference< XInputStream >& rxInStrm, rtl_TextEncoding eTextEnc )
181 : {
182 376 : Reference< XTextInputStream2 > xTextStrm;
183 376 : const char* pcCharset = rtl_getBestMimeCharsetFromTextEncoding( eTextEnc );
184 : OSL_ENSURE( pcCharset, "TextInputStream::createXTextInputStream - unsupported text encoding" );
185 376 : if( rxContext.is() && rxInStrm.is() && pcCharset ) try
186 : {
187 376 : xTextStrm = com::sun::star::io::TextInputStream::create( rxContext );
188 376 : xTextStrm->setInputStream( rxInStrm );
189 376 : xTextStrm->setEncoding( OUString::createFromAscii( pcCharset ) );
190 : }
191 0 : catch (const Exception&)
192 : {
193 : }
194 376 : return xTextStrm;
195 : }
196 :
197 : // private --------------------------------------------------------------------
198 :
199 14324 : OUString TextInputStream::createFinalString( const OUString& rString )
200 : {
201 14324 : if( mcPendingChar == 0 )
202 14324 : return rString;
203 :
204 0 : OUString aString = OUString( mcPendingChar ) + rString;
205 0 : mcPendingChar = 0;
206 0 : return aString;
207 : }
208 :
209 368 : void TextInputStream::init( const Reference< XComponentContext >& rxContext, const Reference< XInputStream >& rxInStrm, rtl_TextEncoding eTextEnc )
210 : {
211 368 : mcPendingChar = 0;
212 368 : mxTextStrm = createXTextInputStream( rxContext, rxInStrm, eTextEnc );
213 368 : }
214 :
215 : } // namespace oox
216 :
217 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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