1 files changed, 336 insertions, 0 deletions
diff --git a/sax/source/tools/fastattribs.cxx b/sax/source/tools/fastattribs.cxx
new file mode 100644
index 000000000..9b309d5fb
--- /dev/null
+++ b/sax/source/tools/fastattribs.cxx
@@ -0,0 +1,336 @@
+/* -*- 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 .
+ */
+
+#include <algorithm>
+
+#include <com/sun/star/xml/sax/SAXException.hpp>
+#include <rtl/math.h>
+#include <sax/fastattribs.hxx>
+#include <utility>
+
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::xml;
+using namespace ::com::sun::star::xml::sax;
+namespace sax_fastparser
+{
+
+// wastage to keep MSVC happy vs. an in-line {}
+FastTokenHandlerBase::~FastTokenHandlerBase()
+{
+}
+
+UnknownAttribute::UnknownAttribute( OUString aNamespaceURL, OString aName, OString value )
+    : maNamespaceURL(std::move( aNamespaceURL )), maName(std::move( aName )), maValue(std::move( value ))
+{
+}
+
+UnknownAttribute::UnknownAttribute( OString aName, OString value )
+    : maName(std::move( aName )), maValue(std::move( value ))
+{
+}
+
+void UnknownAttribute::FillAttribute( Attribute* pAttrib ) const
+{
+    if( pAttrib )
+    {
+        pAttrib->Name = OStringToOUString( maName, RTL_TEXTENCODING_UTF8 );
+        pAttrib->NamespaceURL = maNamespaceURL;
+        pAttrib->Value = OStringToOUString( maValue, RTL_TEXTENCODING_UTF8 );
+    }
+}
+
+FastAttributeList::FastAttributeList( sax_fastparser::FastTokenHandlerBase *pTokenHandler)
+: mpTokenHandler( pTokenHandler )
+{
+    // random initial size of buffer to store attribute values
+    mnChunkLength = 58;
+    mpChunk = static_cast<char *>(malloc( mnChunkLength ));
+    maAttributeValues.push_back( 0 );
+}
+
+FastAttributeList::FastAttributeList( const css::uno::Reference< css::xml::sax::XFastAttributeList > & xAttrList )
+{
+    const auto& rOther = castToFastAttributeList(xAttrList);
+    mpTokenHandler = rOther.mpTokenHandler;
+    mpChunk = static_cast<char *>(malloc( rOther.mnChunkLength ));
+    mnChunkLength = rOther.mnChunkLength;
+    memcpy(mpChunk, rOther.mpChunk, rOther.mnChunkLength);
+    maAttributeValues = rOther.maAttributeValues;
+    maAttributeTokens = rOther.maAttributeTokens;
+    maUnknownAttributes = rOther.maUnknownAttributes;
+}
+
+css::uno::Reference< ::css::util::XCloneable > FastAttributeList::createClone()
+{
+    return new FastAttributeList(this);
+}
+
+FastAttributeList::~FastAttributeList()
+{
+    free( mpChunk );
+}
+
+void FastAttributeList::clear()
+{
+    maAttributeTokens.clear();
+    maAttributeValues.resize(1);
+    assert(maAttributeValues[0] == 0);
+    maUnknownAttributes.clear();
+}
+
+void FastAttributeList::add( sal_Int32 nToken, const char* pValue, size_t nValueLength )
+{
+    assert(nToken != -1);
+    assert(nToken != 0);
+    assert(nValueLength < SAL_MAX_INT32); // protect against absurd values
+    maAttributeTokens.push_back( nToken );
+    sal_Int32 nWritePosition = maAttributeValues.back();
+    maAttributeValues.push_back( maAttributeValues.back() + nValueLength + 1 );
+    if (maAttributeValues.back() > mnChunkLength)
+    {
+        const sal_Int32 newLen = std::max(mnChunkLength * 2, maAttributeValues.back());
+        auto p = static_cast<char*>(realloc(mpChunk, newLen));
+        if (!p)
+            throw std::bad_alloc();
+
+        mnChunkLength = newLen;
+        mpChunk = p;
+
+    }
+    memcpy(mpChunk + nWritePosition, pValue, nValueLength);
+    mpChunk[nWritePosition + nValueLength] = '\0';
+}
+
+void FastAttributeList::add( sal_Int32 nToken, const char* pValue )
+{
+    add( nToken, pValue, strlen( pValue ));
+}
+
+void FastAttributeList::add( sal_Int32 nToken, const OString& rValue )
+{
+    add( nToken, rValue.getStr(), rValue.getLength() );
+}
+
+void FastAttributeList::add(sal_Int32 nToken, std::u16string_view sValue)
+{
+    add(nToken, OUStringToOString(sValue, RTL_TEXTENCODING_UTF8));
+}
+
+void FastAttributeList::addNS( sal_Int32 nNamespaceToken, sal_Int32 nToken, const OString& rValue )
+{
+    sal_Int32 nCombinedToken = (nNamespaceToken << 16) | nToken;
+    add( nCombinedToken, rValue );
+}
+
+void FastAttributeList::addNS(sal_Int32 nNamespaceToken, sal_Int32 nToken,
+                                     std::u16string_view sValue)
+{
+    sal_Int32 nCombinedToken = (nNamespaceToken << 16) | nToken;
+    add(nCombinedToken, sValue);
+}
+
+void FastAttributeList::addUnknown( const OUString& rNamespaceURL, const OString& rName, const OString& value )
+{
+    maUnknownAttributes.emplace_back( rNamespaceURL, rName, value );
+}
+
+void FastAttributeList::addUnknown( const OString& rName, const OString& value )
+{
+    maUnknownAttributes.emplace_back( rName, value );
+}
+
+void FastAttributeList::add( const css::uno::Reference<css::xml::sax::XFastAttributeList>& xAttrList )
+{
+    const auto& rOther = castToFastAttributeList(xAttrList);
+    add(rOther);
+}
+
+void FastAttributeList::add( const FastAttributeList& rOther )
+{
+    for (size_t i=0; i < rOther.maAttributeTokens.size(); ++i)
+        add(rOther.maAttributeTokens[i], rOther.getFastAttributeValue(i), rOther.AttributeValueLength(i));
+    for (const auto & i : rOther.maUnknownAttributes)
+        addUnknown(i.maNamespaceURL, i.maName, i.maValue);
+}
+
+// XFastAttributeList
+sal_Bool FastAttributeList::hasAttribute( ::sal_Int32 Token )
+{
+    for (sal_Int32 i : maAttributeTokens)
+        if (i == Token)
+            return true;
+
+    return false;
+}
+
+sal_Int32 FastAttributeList::getValueToken( ::sal_Int32 Token )
+{
+    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
+        if (maAttributeTokens[i] == Token)
+            return FastTokenHandlerBase::getTokenFromChars(
+                       mpTokenHandler,
+                       getFastAttributeValue(i),
+                       AttributeValueLength( i ) );
+
+    throw SAXException("FastAttributeList::getValueToken: unknown token " + OUString::number(Token), nullptr, Any());
+}
+
+sal_Int32 FastAttributeList::getOptionalValueToken( ::sal_Int32 Token, ::sal_Int32 Default )
+{
+    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
+        if (maAttributeTokens[i] == Token)
+            return FastTokenHandlerBase::getTokenFromChars(
+                       mpTokenHandler,
+                       getFastAttributeValue(i),
+                       AttributeValueLength( i ) );
+
+    return Default;
+}
+
+// performance sensitive shortcuts to avoid allocation ...
+bool FastAttributeList::getAsInteger( sal_Int32 nToken, sal_Int32 &rInt) const
+{
+    rInt = 0;
+    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
+        if (maAttributeTokens[i] == nToken)
+        {
+            sal_Int64 n = rtl_str_toInt64_WithLength( getFastAttributeValue(i), 10, AttributeValueLength(i) );
+            if (n < SAL_MIN_INT32 || n > SAL_MAX_INT32) {
+                n = 0;
+            }
+            rInt = n;
+            return true;
+        }
+    return false;
+}
+
+sal_Int32 FastAttributeList::getAsIntegerByIndex( sal_Int32 nTokenIndex ) const
+{
+    sal_Int64 n = rtl_str_toInt64_WithLength( getFastAttributeValue(nTokenIndex), 10, AttributeValueLength(nTokenIndex) );
+    if (n < SAL_MIN_INT32 || n > SAL_MAX_INT32) {
+        n = 0;
+    }
+    return n;
+}
+
+bool FastAttributeList::getAsDouble( sal_Int32 nToken, double &rDouble) const
+{
+    rDouble = 0.0;
+    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
+        if (maAttributeTokens[i] == nToken)
+        {
+            auto const p = getFastAttributeValue(i);
+            rDouble = rtl_math_stringToDouble( p,  p + AttributeValueLength(i), '.', 0, nullptr, nullptr );
+            return true;
+        }
+    return false;
+}
+
+bool FastAttributeList::getAsChar( sal_Int32 nToken, const char*& rPos ) const
+{
+    for (size_t i = 0, n = maAttributeTokens.size(); i < n; ++i)
+    {
+        if (maAttributeTokens[i] != nToken)
+            continue;
+
+        sal_Int32 nOffset = maAttributeValues[i];
+        rPos = mpChunk + nOffset;
+        return true;
+    }
+
+    return false;
+}
+
+const char* FastAttributeList::getAsCharByIndex( sal_Int32 nTokenIndex ) const
+{
+    sal_Int32 nOffset = maAttributeValues[nTokenIndex];
+    return mpChunk + nOffset;
+}
+
+OUString FastAttributeList::getValue( ::sal_Int32 Token )
+{
+    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
+        if (maAttributeTokens[i] == Token)
+            return OUString( getFastAttributeValue(i), AttributeValueLength(i), RTL_TEXTENCODING_UTF8 );
+
+    throw SAXException("FastAttributeList::getValue: unknown token " + OUString::number(Token), nullptr, Any());
+}
+
+OUString FastAttributeList::getValueByIndex( ::sal_Int32 nTokenIndex ) const
+{
+    return OUString( getFastAttributeValue(nTokenIndex), AttributeValueLength(nTokenIndex), RTL_TEXTENCODING_UTF8 );
+}
+
+OUString FastAttributeList::getOptionalValue( ::sal_Int32 Token )
+{
+    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
+        if (maAttributeTokens[i] == Token)
+            return OUString( getFastAttributeValue(i), AttributeValueLength(i), RTL_TEXTENCODING_UTF8 );
+
+    return OUString();
+}
+Sequence< Attribute > FastAttributeList::getUnknownAttributes(  )
+{
+    auto nSize = maUnknownAttributes.size();
+    if (nSize == 0)
+        return {};
+    Sequence< Attribute > aSeq( nSize );
+    Attribute* pAttr = aSeq.getArray();
+    for( const auto& rAttr : maUnknownAttributes )
+        rAttr.FillAttribute( pAttr++ );
+    return aSeq;
+}
+Sequence< FastAttribute > FastAttributeList::getFastAttributes(  )
+{
+    Sequence< FastAttribute > aSeq( maAttributeTokens.size() );
+    FastAttribute* pAttr = aSeq.getArray();
+    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
+    {
+        pAttr->Token = maAttributeTokens[i];
+        pAttr->Value = OUString( getFastAttributeValue(i), AttributeValueLength(i), RTL_TEXTENCODING_UTF8 );
+        pAttr++;
+    }
+    return aSeq;
+}
+
+FastAttributeList::FastAttributeIter FastAttributeList::find( sal_Int32 nToken ) const
+{
+    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
+        if( maAttributeTokens[i] == nToken )
+            return FastAttributeIter(*this, i);
+    return end();
+}
+
+sal_Int32 FastTokenHandlerBase::getTokenFromChars(
+        const FastTokenHandlerBase *pTokenHandler,
+        const char *pToken, size_t nLen /* = 0 */ )
+{
+    sal_Int32 nRet;
+
+    if( !nLen )
+        nLen = strlen( pToken );
+
+    nRet = pTokenHandler->getTokenDirect( pToken, static_cast<sal_Int32>(nLen) );
+
+    return nRet;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */