83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
/*
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* Copyright 2003,2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LOG4CXX_HELPER_PATTERN_CONVERTER_H
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#define _LOG4CXX_HELPER_PATTERN_CONVERTER_H
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#include <log4cxx/helpers/tchar.h>
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#include <log4cxx/helpers/objectptr.h>
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#include <log4cxx/helpers/objectimpl.h>
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namespace log4cxx
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{
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namespace spi
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{
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class LoggingEvent;
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typedef helpers::ObjectPtrT<LoggingEvent> LoggingEventPtr;
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}
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namespace helpers
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{
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class FormattingInfo;
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class PatternConverter;
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typedef ObjectPtrT<PatternConverter> PatternConverterPtr;
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/**
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<p>PatternConverter is an abtract class that provides the
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formatting functionality that derived classes need.
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<p>Conversion specifiers in a conversion patterns are parsed to
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individual PatternConverters. Each of which is responsible for
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converting a logging event in a converter specific manner.
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*/
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class LOG4CXX_EXPORT PatternConverter : public ObjectImpl
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{
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public:
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DECLARE_ABSTRACT_LOG4CXX_OBJECT(PatternConverter)
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BEGIN_LOG4CXX_CAST_MAP()
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LOG4CXX_CAST_ENTRY(PatternConverter)
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END_LOG4CXX_CAST_MAP()
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PatternConverterPtr next;
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int minChar;
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int maxChar;
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bool leftAlign;
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mutable StringBuffer os;
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protected:
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PatternConverter();
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PatternConverter(const FormattingInfo& fi);
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/**
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Derived pattern converters must override this method in order to
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convert conversion specifiers in the correct way.
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*/
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virtual void convert(ostream& sbuf,
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const spi::LoggingEventPtr& event) const = 0;
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public:
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/**
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A template method for formatting in a converter specific way.
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*/
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virtual void format(ostream& sbuf, const spi::LoggingEventPtr& e) const;
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}; // class PatternConverter
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} // namespace helpers
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}; // namespace log4cxx
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#endif // _LOG4CXX_HELPER_PATTERN_CONVERTER_H
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