sax: FastAttributeList - add attribute in a specific namespace

This change is inspired by startElementNS & singleElementNS which
have namespace as first parameter to define the namespace of an
element. Some attributes of a element can be in different namespace
but until now FastAttributeList "add" method did not have a namespace
parameter. This commit adds "addNS" which accepts namespace as a
first parameter.

Change-Id: Iebf8b5e890c17f00a56923efc3506580eed070a9

include/sax/fastattribs.hxx

@@ -80,6 +80,7 @@ public:
     void clear();
     void add( sal_Int32 nToken, const sal_Char* pValue, size_t nValueLength = 0 );
     void add( sal_Int32 nToken, const OString& rValue );
+    void addNS( sal_Int32 nNamespaceToken, sal_Int32 nToken, const OString& rValue );
     void addUnknown( const OUString& rNamespaceURL, const OString& rName, const sal_Char* pValue );
     void addUnknown( const OString& rName, const sal_Char* pValue );
 

sax/source/tools/fastattribs.cxx

@@ -97,6 +97,12 @@ void FastAttributeList::add( sal_Int32 nToken, const OString& rValue )
     add( nToken, rValue.getStr(), rValue.getLength() );
 }
 
+void FastAttributeList::addNS( sal_Int32 nNamespaceToken, sal_Int32 nToken, const OString& rValue )
+{
+    sal_Int32 nCombinedToken = (nNamespaceToken << 16) | nToken;
+    add( nCombinedToken, rValue );
+}
+
 void FastAttributeList::addUnknown( const OUString& rNamespaceURL, const OString& rName, const sal_Char* pValue )
 {
     maUnknownAttributes.push_back( UnknownAttribute( rNamespaceURL, rName, pValue ) );