Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 237 insertions, 0 deletions

diff --git a/include/sax/fastattribs.hxx b/include/sax/fastattribs.hxx
new file mode 100644
index 000000000..57619b922
--- /dev/null
+++ b/include/sax/fastattribs.hxx
@@ -0,0 +1,237 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SAX_FASTATTRIBS_HXX
+#define INCLUDED_SAX_FASTATTRIBS_HXX
+
+#include <com/sun/star/xml/sax/XFastAttributeList.hpp>
+#include <com/sun/star/xml/sax/XFastTokenHandler.hpp>
+#include <com/sun/star/util/XCloneable.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <sax/saxdllapi.h>
+
+#include <string_view>
+#include <vector>
+
+namespace com::sun::star::xml::sax { class XFastTokenHandler; }
+namespace com::sun::star::xml { struct Attribute; }
+namespace com::sun::star::xml { struct FastAttribute; }
+
+namespace sax_fastparser
+{
+
+struct UnknownAttribute
+{
+    OUString maNamespaceURL;
+    OString maName;
+    OString maValue;
+
+    UnknownAttribute( OUString sNamespaceURL, OString aName, OString value );
+    UnknownAttribute( OString sName, OString value );
+
+    void FillAttribute( css::xml::Attribute* pAttrib ) const;
+};
+
+/// A native C++ interface to tokenisation
+class SAX_DLLPUBLIC FastTokenHandlerBase :
+        public cppu::WeakImplHelper< css::xml::sax::XFastTokenHandler >
+{
+ public:
+    virtual ~FastTokenHandlerBase();
+    virtual sal_Int32 getTokenDirect( const char *pToken, sal_Int32 nLength ) const = 0;
+
+    /**
+     * Client method to attempt the use of this interface if possible.
+     * @xTokenHandler - the token lookup interface
+     * @pStr - string buffer to lookup
+     * @nLength - optional length of chars in that buffer
+     *
+     * @return Tokenized form of pStr
+     */
+    static sal_Int32 getTokenFromChars(
+                         const FastTokenHandlerBase *pTokenHandler,
+                         const char *pStr, size_t nLength );
+};
+
+
+class SAX_DLLPUBLIC FastAttributeList final : public cppu::WeakImplHelper< css::xml::sax::XFastAttributeList, css::util::XCloneable >
+{
+public:
+    FastAttributeList( FastTokenHandlerBase *pTokenHandler );
+    FastAttributeList( const css::uno::Reference< css::xml::sax::XFastAttributeList > & xAttrList );
+    virtual ~FastAttributeList() override;
+
+    void clear();
+    void reserve( sal_Int32 nNumTokens )
+    {
+        maAttributeValues.reserve(nNumTokens+1);
+        maAttributeTokens.reserve(nNumTokens);
+    }
+    void add( const FastAttributeList& );
+    void add( const css::uno::Reference<css::xml::sax::XFastAttributeList>& );
+    void add( sal_Int32 nToken, const char* pValue );
+    void add( sal_Int32 nToken, const char* pValue, size_t nValueLength );
+    void add( sal_Int32 nToken, const OString& rValue );
+    void add( sal_Int32 nToken, std::u16string_view sValue ); // Converts to UTF-8
+    void addNS( sal_Int32 nNamespaceToken, sal_Int32 nToken, const OString& rValue );
+    void addNS( sal_Int32 nNamespaceToken, sal_Int32 nToken, std::u16string_view sValue );
+    // note: rQName is *namespace-prefixed*
+    void addUnknown( const OUString& rNamespaceURL, const OString& rQName, const OString& value );
+    void addUnknown( const OString& rName, const OString& value );
+    const std::vector< sal_Int32 >&  getFastAttributeTokens() const { return maAttributeTokens; }
+    const char* getFastAttributeValue(size_t nIndex) const { return mpChunk + maAttributeValues[nIndex]; }
+    sal_Int32 AttributeValueLength(size_t i) const { return maAttributeValues[i + 1] - maAttributeValues[i] - 1; }
+    size_t size() const { return maAttributeValues.size(); }
+
+    // performance sensitive shortcuts to avoid allocation ...
+    bool getAsInteger( sal_Int32 nToken, sal_Int32 &rInt) const;
+    bool getAsDouble( sal_Int32 nToken, double &rDouble) const;
+    bool getAsChar( sal_Int32 nToken, const char*& rPos ) const;
+    sal_Int32 getAsIntegerByIndex( sal_Int32 nTokenIndex ) const;
+    const char* getAsCharByIndex( sal_Int32 nTokenIndex ) const;
+    OUString getValueByIndex( sal_Int32 nTokenIndex ) const;
+
+    // XFastAttributeList
+    virtual sal_Bool SAL_CALL hasAttribute( ::sal_Int32 Token ) override;
+    virtual ::sal_Int32 SAL_CALL getValueToken( ::sal_Int32 Token ) override;
+    virtual ::sal_Int32 SAL_CALL getOptionalValueToken( ::sal_Int32 Token, ::sal_Int32 Default ) override;
+    virtual OUString SAL_CALL getValue( ::sal_Int32 Token ) override;
+    virtual OUString SAL_CALL getOptionalValue( ::sal_Int32 Token ) override;
+    virtual css::uno::Sequence< css::xml::Attribute > SAL_CALL getUnknownAttributes(  ) override;
+    virtual css::uno::Sequence< css::xml::FastAttribute > SAL_CALL getFastAttributes() override;
+
+    // XCloneable
+    virtual ::css::uno::Reference< ::css::util::XCloneable > SAL_CALL createClone() override;
+
+    sal_Int32 getAttributeIndex( ::sal_Int32 Token )
+    {
+        for (size_t i=0; i<maAttributeTokens.size(); ++i)
+            if (maAttributeTokens[i] == Token)
+                return i;
+        return -1;
+    }
+
+    /// Use for fast iteration and conversion of attributes
+    class FastAttributeIter {
+        const FastAttributeList &mrList;
+        size_t mnIdx;
+
+    public:
+        FastAttributeIter(const FastAttributeList &rList, size_t nIdx)
+            : mrList(rList), mnIdx(nIdx)
+        {
+        }
+
+        FastAttributeIter& operator++ ()
+        {
+            mnIdx++;
+            return *this;
+        }
+        bool operator!=( const FastAttributeIter& rhs ) const
+        {
+            return mnIdx != rhs.mnIdx;
+        }
+
+        const FastAttributeIter& operator*() const
+        {
+            return *this;
+        }
+
+        sal_Int32 getToken() const
+        {
+            assert(mnIdx < mrList.maAttributeTokens.size());
+            return mrList.maAttributeTokens[mnIdx];
+        }
+        bool isEmpty() const
+        {
+            assert(mnIdx < mrList.maAttributeTokens.size());
+            return mrList.AttributeValueLength(mnIdx) < 1;
+        }
+        sal_Int32 toInt32() const
+        {
+            assert(mnIdx < mrList.maAttributeTokens.size());
+            return rtl_str_toInt32(mrList.getFastAttributeValue(mnIdx), 10);
+        }
+        double toDouble() const
+        {
+            assert(mnIdx < mrList.maAttributeTokens.size());
+            return rtl_str_toDouble(mrList.getFastAttributeValue(mnIdx));
+        }
+        bool toBoolean() const
+        {
+            assert(mnIdx < mrList.maAttributeTokens.size());
+            return rtl_str_toBoolean(mrList.getFastAttributeValue(mnIdx));
+        }
+        OUString toString() const
+        {
+            assert(mnIdx < mrList.maAttributeTokens.size());
+            return OUString(mrList.getFastAttributeValue(mnIdx),
+                            mrList.AttributeValueLength(mnIdx),
+                            RTL_TEXTENCODING_UTF8);
+        }
+        const char* toCString() const
+        {
+            assert(mnIdx < mrList.maAttributeTokens.size());
+            return mrList.getFastAttributeValue(mnIdx);
+        }
+        sal_Int32 getLength() const
+        {
+            assert(mnIdx < mrList.maAttributeTokens.size());
+            return mrList.AttributeValueLength(mnIdx);
+        }
+        std::string_view toView() const
+        {
+            assert(mnIdx < mrList.maAttributeTokens.size());
+            return std::string_view(mrList.getFastAttributeValue(mnIdx), mrList.AttributeValueLength(mnIdx));
+        }
+        bool isString(const char *str) const
+        {
+            assert(mnIdx < mrList.maAttributeTokens.size());
+            return !strcmp(str, mrList.getFastAttributeValue(mnIdx));
+        }
+    };
+    FastAttributeIter begin() const { return FastAttributeIter(*this, 0); }
+    FastAttributeIter end() const { return FastAttributeIter(*this, maAttributeTokens.size()); }
+    FastAttributeIter find( sal_Int32 nToken ) const;
+
+private:
+    char     *mpChunk; ///< buffer to store all attribute values - null terminated strings
+    sal_Int32 mnChunkLength; ///< size of allocated memory for mpChunk
+    // maAttributeValues stores pointers, relative to mpChunk, for each attribute value string
+    // length of the string is maAttributeValues[n+1] - maAttributeValues[n] - 1
+    // maAttributeValues[0] == 0
+    std::vector< sal_Int32 > maAttributeValues;
+    std::vector< sal_Int32 > maAttributeTokens;
+    std::vector< UnknownAttribute > maUnknownAttributes;
+    FastTokenHandlerBase * mpTokenHandler;
+};
+
+inline FastAttributeList& castToFastAttributeList(
+                    const css::uno::Reference< css::xml::sax::XFastAttributeList >& xAttrList )
+{
+    assert( dynamic_cast <FastAttributeList *> ( xAttrList.get() ) != nullptr );
+    return *static_cast <FastAttributeList *> ( xAttrList.get() );
+}
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */