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.
   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 <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     if (std::u16string_view rest; aNamespaceName.startsWith("xmlns", &rest))
  37     {
  38         if (rest.empty())
  39         {
  40             aNamespaceName.clear();
  41         }
  42         else if (rest.size() > 1)
  43         {
  44             aNamespaceName = rest.substr(1);
  45         }
  46         else
  47         {
  48             // a xml namespace without name is not allowed (e.g. "xmlns:" )
  49             throw SAXException( u"A xml namespace without name is not allowed!"_ustr, Reference< XInterface >(), Any() );
  50         }
  51     }
  52
  53     if ( aValue.isEmpty() && !aNamespaceName.isEmpty() )
  54     {
  55         // namespace should be reset - as xml draft states this is only allowed
  56         // for the default namespace - check and throw exception if check fails
  57         throw SAXException( u"Clearing xml namespace only allowed for default namespace!"_ustr, Reference< XInterface >(), Any() );
  58     }
  59
  60     if ( aNamespaceName.isEmpty() )
  61         m_aDefaultNamespace = aValue;
  62     else
  63     {
  64         p = m_aNamespaceMap.find( aNamespaceName );
  65         if ( p != m_aNamespaceMap.end() )
  66         {
  67             // replace current namespace definition
  68             m_aNamespaceMap.erase( p );
  69             m_aNamespaceMap.emplace( aNamespaceName, aValue );
  70         }
  71         else
  72         {
  73             m_aNamespaceMap.emplace( aNamespaceName, aValue );
  74         }
  75     }
  76 }
  77
  78 OUString XMLNamespaces::applyNSToAttributeName( const OUString& aName ) const
  79 {
  80     // xml draft: there is no default namespace for attributes!
  81
  82     int index;
  83     if (( index = aName.indexOf( ':' )) > 0 )
  84     {
  85         if ( aName.getLength() <= index+1 )
  86         {
  87             // attribute with namespace but without name "namespace:" is not allowed!!
  88             throw SAXException( u"Attribute has no name only preceding namespace!"_ustr, Reference< XInterface >(), Any() );
  89         }
  90         OUString aAttributeName = getNamespaceValue( aName.copy( 0, index )) + "^" + aName.subView( index+1);
  91         return aAttributeName;
  92     }
  93
  94     return aName;
  95 }
  96
  97 OUString XMLNamespaces::applyNSToElementName( const OUString& aName ) const
  98 {
  99     // xml draft: element names can have a default namespace
 100
 101     int         index = aName.indexOf( ':' );
 102     OUString aNamespace;
 103     OUString aElementName = aName;
 104
 105     if ( index > 0 )
 106         aNamespace = getNamespaceValue( aName.copy( 0, index ) );
 107     else
 108         aNamespace = m_aDefaultNamespace;
 109
 110     if ( !aNamespace.isEmpty() )
 111     {
 112         aElementName = aNamespace + "^";
 113     }
 114     else
 115         return aName;
 116
 117     if ( index > 0 )
 118     {
 119         if ( aName.getLength() <= index+1 )
 120         {
 121             // attribute with namespace but without a name is not allowed (e.g. "cfg:" )
 122             throw SAXException( u"Attribute has no name only preceding namespace!"_ustr, Reference< XInterface >(), Any() );
 123         }
 124         aElementName += aName.subView( index+1 );
 125     }
 126     else
 127         aElementName += aName;
 128
 129     return aElementName;
 130 }
 131
 132 OUString const & XMLNamespaces::getNamespaceValue( const OUString& aNamespace ) const
 133 {
 134     if ( aNamespace.isEmpty() )
 135         return m_aDefaultNamespace;
 136     else
 137     {
 138         NamespaceMap::const_iterator p = m_aNamespaceMap.find( aNamespace );
 139         if ( p == m_aNamespaceMap.end() )
 140         {
 141             // namespace not defined => throw exception!
 142             throw SAXException( u"XML namespace used but not defined!"_ustr, Reference< XInterface >(), Any() );
 143         }
 144         return p->second;
 145     }
 146 }
 147
 148 }
 149
 150 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */