framework/source/fwe/xml/xmlnamespaces.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.
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   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 <xml/xmlnamespaces.hxx>
  21
  22 #include <com/sun/star/xml/sax/SAXException.hpp>
  23
  24 using namespace ::com::sun::star::xml::sax;
  25 using namespace ::com::sun::star::uno;
  26
  27 namespace framework
  28 {
  29
  30 void XMLNamespaces::addNamespace( const OUString& aName, const OUString& aValue )
  31 {
  32     NamespaceMap::iterator p;
  33     OUString aNamespaceName( aName );
  34
  35     // delete preceding "xmlns"
  36     constexpr char aXMLAttributeNamespace[] = "xmlns";
  37     if ( aNamespaceName.startsWith( aXMLAttributeNamespace ) )
  38     {
  39         constexpr sal_Int32 nXMLNamespaceLength = RTL_CONSTASCII_LENGTH(aXMLAttributeNamespace);
  40         if ( aNamespaceName.getLength() == nXMLNamespaceLength )
  41         {
  42             aNamespaceName.clear();
  43         }
  44         else if ( aNamespaceName.getLength() >= nXMLNamespaceLength+2 )
  45         {
  46             aNamespaceName = aNamespaceName.copy( nXMLNamespaceLength+1 );
  47         }
  48         else
  49         {
  50             // a xml namespace without name is not allowed (e.g. "xmlns:" )
  51             throw SAXException( u"A xml namespace without name is not allowed!"_ustr, Reference< XInterface >(), Any() );
  52         }
  53     }
  54
  55     if ( aValue.isEmpty() && !aNamespaceName.isEmpty() )
  56     {
  57         // namespace should be reset - as xml draft states this is only allowed
  58         // for the default namespace - check and throw exception if check fails
  59         throw SAXException( u"Clearing xml namespace only allowed for default namespace!"_ustr, Reference< XInterface >(), Any() );
  60     }
  61
  62     if ( aNamespaceName.isEmpty() )
  63         m_aDefaultNamespace = aValue;
  64     else
  65     {
  66         p = m_aNamespaceMap.find( aNamespaceName );
  67         if ( p != m_aNamespaceMap.end() )
  68         {
  69             // replace current namespace definition
  70             m_aNamespaceMap.erase( p );
  71             m_aNamespaceMap.emplace( aNamespaceName, aValue );
  72         }
  73         else
  74         {
  75             m_aNamespaceMap.emplace( aNamespaceName, aValue );
  76         }
  77     }
  78 }
  79
  80 OUString XMLNamespaces::applyNSToAttributeName( const OUString& aName ) const
  81 {
  82     // xml draft: there is no default namespace for attributes!
  83
  84     int index;
  85     if (( index = aName.indexOf( ':' )) > 0 )
  86     {
  87         if ( aName.getLength() <= index+1 )
  88         {
  89             // attribute with namespace but without name "namespace:" is not allowed!!
  90             throw SAXException( u"Attribute has no name only preceding namespace!"_ustr, Reference< XInterface >(), Any() );
  91         }
  92         OUString aAttributeName = getNamespaceValue( aName.copy( 0, index )) + "^" + aName.subView( index+1);
  93         return aAttributeName;
  94     }
  95
  96     return aName;
  97 }
  98
  99 OUString XMLNamespaces::applyNSToElementName( const OUString& aName ) const
 100 {
 101     // xml draft: element names can have a default namespace
 102
 103     int         index = aName.indexOf( ':' );
 104     OUString aNamespace;
 105     OUString aElementName = aName;
 106
 107     if ( index > 0 )
 108         aNamespace = getNamespaceValue( aName.copy( 0, index ) );
 109     else
 110         aNamespace = m_aDefaultNamespace;
 111
 112     if ( !aNamespace.isEmpty() )
 113     {
 114         aElementName = aNamespace + "^";
 115     }
 116     else
 117         return aName;
 118
 119     if ( index > 0 )
 120     {
 121         if ( aName.getLength() <= index+1 )
 122         {
 123             // attribute with namespace but without a name is not allowed (e.g. "cfg:" )
 124             throw SAXException( u"Attribute has no name only preceding namespace!"_ustr, Reference< XInterface >(), Any() );
 125         }
 126         aElementName += aName.subView( index+1 );
 127     }
 128     else
 129         aElementName += aName;
 130
 131     return aElementName;
 132 }
 133
 134 OUString const & XMLNamespaces::getNamespaceValue( const OUString& aNamespace ) const
 135 {
 136     if ( aNamespace.isEmpty() )
 137         return m_aDefaultNamespace;
 138     else
 139     {
 140         NamespaceMap::const_iterator p = m_aNamespaceMap.find( aNamespace );
 141         if ( p == m_aNamespaceMap.end() )
 142         {
 143             // namespace not defined => throw exception!
 144             throw SAXException( u"XML namespace used but not defined!"_ustr, Reference< XInterface >(), Any() );
 145         }
 146         return p->second;
 147     }
 148 }
 149
 150 }
 151
 152 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */