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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 :
21 : #include "imagecontainer.hxx"
22 : #include "genericelements.hxx"
23 : #include "xmlemitter.hxx"
24 :
25 : #include <rtl/ustrbuf.hxx>
26 : #include <osl/file.h>
27 : #include <rtl/crc.h>
28 :
29 : #include <com/sun/star/graphic/XGraphicProvider.hpp>
30 : #include <com/sun/star/beans/PropertyValue.hpp>
31 :
32 : #include <cppuhelper/implbase1.hxx>
33 : #include <comphelper/stl_types.hxx>
34 :
35 : #include <boost/bind.hpp>
36 :
37 : using namespace com::sun::star;
38 :
39 : namespace pdfi
40 : {
41 :
42 : namespace
43 : {
44 :
45 : static const sal_Char aBase64EncodeTable[] =
46 : { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
47 : 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
48 : 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
49 : 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
50 : '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' };
51 :
52 6 : OUString encodeBase64( const sal_Int8* i_pBuffer, const sal_uInt32 i_nBufferLength )
53 : {
54 6 : OUStringBuffer aBuf( (i_nBufferLength+1) * 4 / 3 );
55 6 : const sal_Int32 nRemain(i_nBufferLength%3);
56 6 : const sal_Int32 nFullTripleLength( i_nBufferLength - (i_nBufferLength%3));
57 6 : sal_Int32 nBufPos( 0 );
58 88260 : for( sal_Int32 i = 0; i < nFullTripleLength; i += 3, nBufPos += 4 )
59 : {
60 176508 : const sal_Int32 nBinary = (((sal_uInt8)i_pBuffer[i + 0]) << 16) +
61 176508 : (((sal_uInt8)i_pBuffer[i + 1]) << 8) +
62 176508 : ((sal_uInt8)i_pBuffer[i + 2]);
63 :
64 88254 : aBuf.appendAscii("====");
65 :
66 88254 : sal_uInt8 nIndex (static_cast<sal_uInt8>((nBinary & 0xFC0000) >> 18));
67 88254 : aBuf[nBufPos] = aBase64EncodeTable [nIndex];
68 :
69 88254 : nIndex = static_cast<sal_uInt8>((nBinary & 0x3F000) >> 12);
70 88254 : aBuf[nBufPos+1] = aBase64EncodeTable [nIndex];
71 :
72 88254 : nIndex = static_cast<sal_uInt8>((nBinary & 0xFC0) >> 6);
73 88254 : aBuf[nBufPos+2] = aBase64EncodeTable [nIndex];
74 :
75 88254 : nIndex = static_cast<sal_uInt8>((nBinary & 0x3F));
76 88254 : aBuf[nBufPos+3] = aBase64EncodeTable [nIndex];
77 : }
78 6 : if( nRemain > 0 )
79 : {
80 6 : aBuf.appendAscii("====");
81 6 : sal_Int32 nBinary( 0 );
82 6 : const sal_Int32 nStart(i_nBufferLength-nRemain);
83 6 : switch(nRemain)
84 : {
85 0 : case 1: nBinary = ((sal_uInt8)i_pBuffer[nStart + 0]) << 16;
86 0 : break;
87 6 : case 2: nBinary = (((sal_uInt8)i_pBuffer[nStart + 0]) << 16) +
88 6 : (((sal_uInt8)i_pBuffer[nStart + 1]) << 8);
89 6 : break;
90 : }
91 6 : sal_uInt8 nIndex (static_cast<sal_uInt8>((nBinary & 0xFC0000) >> 18));
92 6 : aBuf[nBufPos] = aBase64EncodeTable [nIndex];
93 :
94 6 : nIndex = static_cast<sal_uInt8>((nBinary & 0x3F000) >> 12);
95 6 : aBuf[nBufPos+1] = aBase64EncodeTable [nIndex];
96 :
97 6 : if( nRemain == 2 )
98 : {
99 6 : nIndex = static_cast<sal_uInt8>((nBinary & 0xFC0) >> 6);
100 6 : aBuf[nBufPos+2] = aBase64EncodeTable [nIndex];
101 : }
102 : }
103 :
104 6 : return aBuf.makeStringAndClear();
105 : }
106 :
107 : } // namespace
108 :
109 4 : ImageContainer::ImageContainer() :
110 4 : m_aImages()
111 4 : {}
112 :
113 4 : ImageId ImageContainer::addImage( const uno::Sequence<beans::PropertyValue>& xBitmap )
114 : {
115 4 : m_aImages.push_back( xBitmap );
116 4 : return m_aImages.size()-1;
117 : }
118 :
119 6 : void ImageContainer::writeBase64EncodedStream( ImageId nId, EmitContext& rContext )
120 : {
121 : OSL_ASSERT( nId >= 0 && nId < ImageId( m_aImages.size()) );
122 :
123 6 : const uno::Sequence<beans::PropertyValue>& rEntry( m_aImages[nId] );
124 :
125 : // find "InputSequence" property
126 6 : const beans::PropertyValue* pAry(rEntry.getConstArray());
127 6 : const sal_Int32 nLen(rEntry.getLength());
128 : const beans::PropertyValue* pValue(
129 : std::find_if(pAry,pAry+nLen,
130 : boost::bind(comphelper::TPropertyValueEqualFunctor(),
131 : _1,
132 6 : OUString("InputSequence"))));
133 : OSL_ENSURE( pValue != pAry+nLen,
134 : "InputSequence not found" );
135 :
136 6 : uno::Sequence<sal_Int8> aData;
137 6 : if( !(pValue->Value >>= aData) )
138 : OSL_FAIL("Wrong data type");
139 :
140 6 : rContext.rEmitter.write( encodeBase64( aData.getConstArray(), aData.getLength() ));
141 6 : }
142 :
143 6 : }
144 :
145 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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