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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/diagnose.h>
27 : #include <osl/file.h>
28 : #include <rtl/crc.h>
29 :
30 : #include <com/sun/star/graphic/XGraphicProvider.hpp>
31 : #include <com/sun/star/beans/PropertyValue.hpp>
32 :
33 : #include <cppuhelper/implbase1.hxx>
34 : #include <comphelper/stl_types.hxx>
35 :
36 : #include <boost/bind.hpp>
37 :
38 : using namespace com::sun::star;
39 :
40 : namespace pdfi
41 : {
42 :
43 : namespace
44 : {
45 :
46 : static const sal_Char aBase64EncodeTable[] =
47 : { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
48 : 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
49 : 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
50 : 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
51 : '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' };
52 :
53 4 : OUString encodeBase64( const sal_Int8* i_pBuffer, const sal_uInt32 i_nBufferLength )
54 : {
55 4 : OUStringBuffer aBuf( (i_nBufferLength+1) * 4 / 3 );
56 4 : const sal_Int32 nRemain(i_nBufferLength%3);
57 4 : const sal_Int32 nFullTripleLength( i_nBufferLength - (i_nBufferLength%3));
58 4 : sal_Int32 nBufPos( 0 );
59 52228 : for( sal_Int32 i = 0; i < nFullTripleLength; i += 3, nBufPos += 4 )
60 : {
61 104448 : const sal_Int32 nBinary = (((sal_uInt8)i_pBuffer[i + 0]) << 16) +
62 104448 : (((sal_uInt8)i_pBuffer[i + 1]) << 8) +
63 104448 : ((sal_uInt8)i_pBuffer[i + 2]);
64 :
65 52224 : aBuf.appendAscii("====");
66 :
67 52224 : sal_uInt8 nIndex (static_cast<sal_uInt8>((nBinary & 0xFC0000) >> 18));
68 52224 : aBuf[nBufPos] = aBase64EncodeTable [nIndex];
69 :
70 52224 : nIndex = static_cast<sal_uInt8>((nBinary & 0x3F000) >> 12);
71 52224 : aBuf[nBufPos+1] = aBase64EncodeTable [nIndex];
72 :
73 52224 : nIndex = static_cast<sal_uInt8>((nBinary & 0xFC0) >> 6);
74 52224 : aBuf[nBufPos+2] = aBase64EncodeTable [nIndex];
75 :
76 52224 : nIndex = static_cast<sal_uInt8>((nBinary & 0x3F));
77 52224 : aBuf[nBufPos+3] = aBase64EncodeTable [nIndex];
78 : }
79 4 : if( nRemain > 0 )
80 : {
81 3 : aBuf.appendAscii("====");
82 3 : sal_Int32 nBinary( 0 );
83 3 : const sal_Int32 nStart(i_nBufferLength-nRemain);
84 3 : switch(nRemain)
85 : {
86 0 : case 1: nBinary = ((sal_uInt8)i_pBuffer[nStart + 0]) << 16;
87 0 : break;
88 3 : case 2: nBinary = (((sal_uInt8)i_pBuffer[nStart + 0]) << 16) +
89 3 : (((sal_uInt8)i_pBuffer[nStart + 1]) << 8);
90 3 : break;
91 : }
92 3 : sal_uInt8 nIndex (static_cast<sal_uInt8>((nBinary & 0xFC0000) >> 18));
93 3 : aBuf[nBufPos] = aBase64EncodeTable [nIndex];
94 :
95 3 : nIndex = static_cast<sal_uInt8>((nBinary & 0x3F000) >> 12);
96 3 : aBuf[nBufPos+1] = aBase64EncodeTable [nIndex];
97 :
98 3 : if( nRemain == 2 )
99 : {
100 3 : nIndex = static_cast<sal_uInt8>((nBinary & 0xFC0) >> 6);
101 3 : aBuf[nBufPos+2] = aBase64EncodeTable [nIndex];
102 : }
103 : }
104 :
105 4 : return aBuf.makeStringAndClear();
106 : }
107 :
108 : } // namespace
109 :
110 4 : ImageContainer::ImageContainer() :
111 4 : m_aImages()
112 4 : {}
113 :
114 3 : ImageId ImageContainer::addImage( const uno::Sequence<beans::PropertyValue>& xBitmap )
115 : {
116 3 : m_aImages.push_back( xBitmap );
117 3 : return m_aImages.size()-1;
118 : }
119 :
120 4 : void ImageContainer::writeBase64EncodedStream( ImageId nId, EmitContext& rContext )
121 : {
122 : OSL_ASSERT( nId >= 0 && nId < ImageId( m_aImages.size()) );
123 :
124 4 : const uno::Sequence<beans::PropertyValue>& rEntry( m_aImages[nId] );
125 :
126 : // find "InputSequence" property
127 4 : const beans::PropertyValue* pAry(rEntry.getConstArray());
128 4 : const sal_Int32 nLen(rEntry.getLength());
129 : const beans::PropertyValue* pValue(
130 : std::find_if(pAry,pAry+nLen,
131 : boost::bind(comphelper::TPropertyValueEqualFunctor(),
132 : _1,
133 4 : OUString("InputSequence"))));
134 : OSL_ENSURE( pValue != pAry+nLen,
135 : "InputSequence not found" );
136 :
137 4 : uno::Sequence<sal_Int8> aData;
138 4 : if( !(pValue->Value >>= aData) )
139 : OSL_FAIL("Wrong data type");
140 :
141 4 : rContext.rEmitter.write( encodeBase64( aData.getConstArray(), aData.getLength() ));
142 4 : }
143 :
144 15 : }
145 :
146 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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