xmlnamespaces.cxx

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#include <xml/xmlnamespaces.hxx>
 
#include <com/sun/star/xml/sax/SAXException.hpp>
 
using namespace ::com::sun::star::xml::sax;
using namespace ::com::sun::star::uno;
 
namespace framework
{
 
void XMLNamespaces::addNamespace( const OUString& aName, const OUString& aValue )
{
    NamespaceMap::iterator p;
    OUString aNamespaceName( aName );
 
    // delete preceding "xmlns"
    constexpr char aXMLAttributeNamespace[] = "xmlns";
    if ( aNamespaceName.startsWith( aXMLAttributeNamespace ) )
    {
        constexpr sal_Int32 nXMLNamespaceLength = RTL_CONSTASCII_LENGTH(aXMLAttributeNamespace);
        if ( aNamespaceName.getLength() == nXMLNamespaceLength )
        {
            aNamespaceName.clear();
        }
        else if ( aNamespaceName.getLength() >= nXMLNamespaceLength+2 )
        {
            aNamespaceName = aNamespaceName.copy( nXMLNamespaceLength+1 );
        }
        else
        {
            // a xml namespace without name is not allowed (e.g. "xmlns:" )
            throw SAXException( "A xml namespace without name is not allowed!", Reference< XInterface >(), Any() );
        }
    }
 
    if ( aValue.isEmpty() && !aNamespaceName.isEmpty() )
    {
        // namespace should be reset - as xml draft states this is only allowed
        // for the default namespace - check and throw exception if check fails
        throw SAXException( "Clearing xml namespace only allowed for default namespace!", Reference< XInterface >(), Any() );
    }
 
    if ( aNamespaceName.isEmpty() )
        m_aDefaultNamespace = aValue;
    else
    {
        p = m_aNamespaceMap.find( aNamespaceName );
        if ( p != m_aNamespaceMap.end() )
        {
            // replace current namespace definition
            m_aNamespaceMap.erase( p );
            m_aNamespaceMap.emplace( aNamespaceName, aValue );
        }
        else
        {
            m_aNamespaceMap.emplace( aNamespaceName, aValue );
        }
    }
}
 
OUString XMLNamespaces::applyNSToAttributeName( const OUString& aName ) const
{
    // xml draft: there is no default namespace for attributes!
 
    int index;
    if (( index = aName.indexOf( ':' )) > 0 )
    {
        if ( aName.getLength() <= index+1 )
        {
            // attribute with namespace but without name "namespace:" is not allowed!!
            throw SAXException( "Attribute has no name only preceding namespace!", Reference< XInterface >(), Any() );
        }
        OUString aAttributeName = getNamespaceValue( aName.copy( 0, index )) + "^" + aName.subView( index+1);
        return aAttributeName;
    }
 
    return aName;
}
 
OUString XMLNamespaces::applyNSToElementName( const OUString& aName ) const
{
    // xml draft: element names can have a default namespace
 
    int         index = aName.indexOf( ':' );
    OUString aNamespace;
    OUString aElementName = aName;
 
    if ( index > 0 )
        aNamespace = getNamespaceValue( aName.copy( 0, index ) );
    else
        aNamespace = m_aDefaultNamespace;
 
    if ( !aNamespace.isEmpty() )
    {
        aElementName = aNamespace + "^";
    }
    else
        return aName;
 
    if ( index > 0 )
    {
        if ( aName.getLength() <= index+1 )
        {
            // attribute with namespace but without a name is not allowed (e.g. "cfg:" )
            throw SAXException( "Attribute has no name only preceding namespace!", Reference< XInterface >(), Any() );
        }
        aElementName += aName.subView( index+1 );
    }
    else
        aElementName += aName;
 
    return aElementName;
}
 
OUString const & XMLNamespaces::getNamespaceValue( const OUString& aNamespace ) const
{
    if ( aNamespace.isEmpty() )
        return m_aDefaultNamespace;
    else
    {
        NamespaceMap::const_iterator p = m_aNamespaceMap.find( aNamespace );
        if ( p == m_aNamespaceMap.end() )
        {
            // namespace not defined => throw exception!
            throw SAXException( "XML namespace used but not defined!", Reference< XInterface >(), Any() );
        }
        return p->second;
    }
}
 
}
 
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