sdext/source/pdfimport/odf/odfemitter.cxx

   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 "odfemitter.hxx"
  22
  23 #include <rtl/ustrbuf.hxx>
  24 #include <cppuhelper/exc_hlp.hxx>
  25 #include <com/sun/star/io/XInputStream.hpp>
  26 #include <com/sun/star/io/XOutputStream.hpp>
  27 #include <boost/bind.hpp>
  28
  29 using namespace com::sun::star;
  30
  31 namespace pdfi
  32 {
  33
  34 class OdfEmitter : public XmlEmitter
  35 {
  36 private:
  37     uno::Reference<io::XOutputStream> m_xOutput;
  38     uno::Sequence<sal_Int8>           m_aLineFeed;
  39     uno::Sequence<sal_Int8>           m_aBuf;
  40
  41 public:
  42     explicit OdfEmitter( const uno::Reference<io::XOutputStream>& xOutput );
  43
  44     virtual void beginTag( const char* pTag, const PropertyMap& rProperties );
  45     virtual void write( const OUString& rString );
  46     virtual void endTag( const char* pTag );
  47 };
  48
  49 OdfEmitter::OdfEmitter( const uno::Reference<io::XOutputStream>& xOutput ) :
  50     m_xOutput( xOutput ),
  51     m_aLineFeed(1),
  52     m_aBuf()
  53 {
  54     OSL_PRECOND(m_xOutput.is(), "OdfEmitter(): invalid output stream");
  55     m_aLineFeed[0] = '\n';
  56
  57     OUStringBuffer aElement;
  58     aElement.appendAscii("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
  59     write(aElement.makeStringAndClear());
  60 }
  61
  62 void OdfEmitter::beginTag( const char* pTag, const PropertyMap& rProperties )
  63 {
  64     OSL_PRECOND(pTag,"Invalid tag string");
  65
  66     OUStringBuffer aElement;
  67     aElement.appendAscii("<");
  68     aElement.appendAscii(pTag);
  69     aElement.appendAscii(" ");
  70
  71     std::vector<OUString>        aAttributes;
  72     PropertyMap::const_iterator       aCurr(rProperties.begin());
  73     const PropertyMap::const_iterator aEnd(rProperties.end());
  74     while( aCurr != aEnd )
  75     {
  76         OUStringBuffer aAttribute;
  77         aAttribute.append(aCurr->first);
  78         aAttribute.appendAscii("=\"");
  79         aAttribute.append(aCurr->second);
  80         aAttribute.appendAscii("\" ");
  81         aAttributes.push_back(aAttribute.makeStringAndClear());
  82         ++aCurr;
  83     }
  84
  85     // since the hash map's sorting is undefined (and varies across
  86     // platforms, and even between different compile-time settings),
  87     // sort the attributes.
  88     std::sort(aAttributes.begin(), aAttributes.end());
  89     std::for_each(aAttributes.begin(),
  90                   aAttributes.end(),
  91                   boost::bind( (OUStringBuffer& (OUStringBuffer::*)(const OUString&))
  92                                (&OUStringBuffer::append),
  93                                boost::ref(aElement),
  94                                _1 ));
  95     aElement.appendAscii(">");
  96
  97     write(aElement.makeStringAndClear());
  98 }
  99
 100 void OdfEmitter::write( const OUString& rText )
 101 {
 102     const OString aStr = OUStringToOString(rText,RTL_TEXTENCODING_UTF8);
 103     const sal_Int32 nLen( aStr.getLength() );
 104     m_aBuf.realloc( nLen );
 105     const sal_Char* pStr = aStr.getStr();
 106     std::copy(pStr,pStr+nLen,m_aBuf.getArray());
 107
 108     m_xOutput->writeBytes(m_aBuf);
 109     m_xOutput->writeBytes(m_aLineFeed);
 110 }
 111
 112 void OdfEmitter::endTag( const char* pTag )
 113 {
 114     OUStringBuffer aElement;
 115     aElement.appendAscii("</");
 116     aElement.appendAscii(pTag);
 117     aElement.appendAscii(">");
 118     write(aElement.makeStringAndClear());
 119 }
 120
 121 XmlEmitterSharedPtr createOdfEmitter( const uno::Reference<io::XOutputStream>& xOut )
 122 {
 123     return XmlEmitterSharedPtr(new OdfEmitter(xOut));
 124 }
 125
 126 }
 127
 128 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */