locationinfo.h

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/*
 * 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef _LOG4CXX_SPI_LOCATION_LOCATIONINFO_H
#define _LOG4CXX_SPI_LOCATION_LOCATIONINFO_H
 
#include <log4cxx/log4cxx.h>
#include <string>
#include <string.h>
 
#if defined(_MSC_VER)
#define LOG4CXX_SHORT_FILENAME_SPLIT_CHAR '\\'
#else
#define LOG4CXX_SHORT_FILENAME_SPLIT_CHAR '/'
#endif
 
namespace LOG4CXX_NS
{
namespace spi
{
class LOG4CXX_EXPORT LocationInfo
{
    public:
 
        static const char* const NA;
        static const char* const NA_METHOD;
 
        static const LocationInfo& getLocationUnavailable();
 
#if 201304L <= __cpp_constexpr
        static constexpr const char* calcShortFileName(const char* fileName){
#else
        static const char* calcShortFileName(const char* fileName){
#endif
            if (fileName == nullptr) return nullptr;
#if defined(_MSC_VER)
            // As at 2024, the MSVC optimizer does not inline a function that calls another function
            const char* location = nullptr;
            for (auto p = fileName; *p; ++p)
                if (*p == LOG4CXX_SHORT_FILENAME_SPLIT_CHAR)
                    location = p;
#else
            const char* location = strrchr(fileName, LOG4CXX_SHORT_FILENAME_SPLIT_CHAR);
#endif
            return location == nullptr ? fileName : location + 1;
        }
 
        LocationInfo( const char* const fileName,
                      const char* const shortFileName,
                      const char* const functionName,
                      int lineNumber);
 
        LocationInfo();
 
        LocationInfo( const LocationInfo& src );
 
        LocationInfo& operator = ( const LocationInfo& src );
 
        void clear();
 
 
        const std::string getClassName() const;
 
        const char* getFileName() const;
 
        const char* getShortFileName() const;
 
        int getLineNumber() const;
 
        const std::string getMethodName() const;
 
 
    private:
        int lineNumber;
 
        const char* fileName;
 
        const char* shortFileName;
 
        const char* methodName;
 
 
};
}
}
 
#if !defined(LOG4CXX_LOCATION) && !LOG4CXX_DISABLE_LOCATION_INFO
#if defined(_MSC_VER)
    #if _MSC_VER >= 1300
        #define __LOG4CXX_FUNC__ __FUNCSIG__
    #endif
#else
    #if defined(__GNUC__)
        #define __LOG4CXX_FUNC__ __PRETTY_FUNCTION__
    #else
        #if defined(__BORLANDC__)
            #define __LOG4CXX_FUNC__ __FUNC__
        #endif
    #endif
#endif
#if !defined(__LOG4CXX_FUNC__)
    #define __LOG4CXX_FUNC__ nullptr
#endif
 
 
#define LOG4CXX_LOCATION ::LOG4CXX_NS::spi::LocationInfo(__FILE__,         \
    ::LOG4CXX_NS::spi::LocationInfo::calcShortFileName(__FILE__), \
    __LOG4CXX_FUNC__, \
    __LINE__)
 
#else
#define LOG4CXX_LOCATION ::LOG4CXX_NS::spi::LocationInfo::getLocationUnavailable()
#endif // LOG4CXX_LOCATION
 
#endif //_LOG4CXX_SPI_LOCATION_LOCATIONINFO_H