1 files changed, 94 insertions, 0 deletions
diff --git a/xmloff/inc/fasttokenhandler.hxx b/xmloff/inc/fasttokenhandler.hxx
new file mode 100644
index 000000000..f0acd0337
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+++ b/xmloff/inc/fasttokenhandler.hxx
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef XMLOFF_INC_FASTTOKENHANDLER_HXX
+#define XMLOFF_INC_FASTTOKENHANDLER_HXX
+
+#include <com/sun/star/xml/sax/XFastTokenHandler.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <sax/fastattribs.hxx>
+#include <xmloff/token/tokens.hxx>
+#include <sal/log.hxx>
+#include <xmloff/dllapi.h>
+
+namespace xmloff::token {
+
+class TokenMap
+{
+public:
+    explicit TokenMap();
+            ~TokenMap();
+
+    /** Returns the UTF-8 name of the passed token identifier as byte sequence. */
+    css::uno::Sequence< sal_Int8 > const & getUtf8TokenName( sal_Int32 nToken ) const
+    {
+        SAL_WARN_IF(nToken < 0 || nToken >= XML_TOKEN_COUNT, "xmloff", "Wrong nToken parameter");
+        if( 0 <= nToken && nToken < XML_TOKEN_COUNT )
+            return maTokenNamesUtf8[ nToken ];
+        return EMPTY_BYTE_SEQ;
+    }
+
+    const OUString& getTokenName( sal_Int32 nToken ) const
+    {
+        SAL_WARN_IF(nToken < 0 || nToken >= XML_TOKEN_COUNT, "xmloff", "Wrong nToken parameter");
+        if( 0 <= nToken && nToken < XML_TOKEN_COUNT )
+            return maTokenNames[ nToken ];
+        return EMPTY_STRING;
+    }
+
+    /** Returns the token identifier for the passed UTF-8 token name. */
+    static sal_Int32 getTokenFromUtf8( const css::uno::Sequence< sal_Int8 >& rUtf8Name )
+    {
+        return getTokenFromUTF8( reinterpret_cast< const char* >(
+                    rUtf8Name.getConstArray() ), rUtf8Name.getLength() );
+    }
+
+    /** Returns the token identifier for a UTF-8 string */
+    static sal_Int32 getTokenFromUTF8( const char *pToken, sal_Int32 nLength )
+    {
+        return getTokenPerfectHash( pToken, nLength );
+    }
+
+private:
+    static sal_Int32 getTokenPerfectHash( const char *pToken, sal_Int32 nLength );
+
+    std::vector< css::uno::Sequence< sal_Int8 > > maTokenNamesUtf8;
+    std::vector< OUString > maTokenNames;
+
+    static const css::uno::Sequence< sal_Int8 > EMPTY_BYTE_SEQ;
+    static const OUString EMPTY_STRING;
+};
+
+TokenMap& StaticTokenMap();
+
+class FastTokenHandler final :
+    public sax_fastparser::FastTokenHandlerBase
+{
+public:
+    explicit FastTokenHandler();
+    virtual ~FastTokenHandler() override;
+
+    // XFastTokenHandler
+    virtual css::uno::Sequence< sal_Int8 > SAL_CALL getUTF8Identifier( sal_Int32 nToken ) override;
+    virtual sal_Int32 SAL_CALL getTokenFromUTF8( const css::uno::Sequence< sal_Int8 >& Identifier ) override;
+
+    const OUString & getIdentifier( sal_Int32 nToken ) const;
+
+    // Much faster direct C++ shortcut to the method that matters
+    virtual sal_Int32 getTokenDirect( const char *pToken, sal_Int32 nLength ) const override;
+
+private:
+    TokenMap& mrTokenMap;
+};
+
+} // namespace xmloff::token
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */