Simple Logging

/*!
   \file       single.h
   \brief      A simplistic file logger. Auto-timestamps each message.
           Member function @setFilters is not written yet. (Additionally uses a singleton template)
   \author     ~Ziggy Stardust
*/

#ifndef __LOG_H__
#define __LOG_H__

#include <cstdlib>
#include <ctime>
#include <string>
#include <single.h>

//  [8.13.12 : 3:3:45] Engine Core : Loaded engine successfully.
class Logger : public Singleton<Logger> {
    friend class Singleton<Logger>;
private:
    Logger() {};
    ~Logger();
public:
    /**
    @strFilters - Disables logging for included tags.
                      Multiple tags must be separated
                      with a bar - e.g. "System|Position|Graphics"
    */
    void setFilters(std::string strFilters);

    /**
    @strCategory - Determines log file message is placed into
    @strSection  - Tags the message appropriately (used for modules, usually)
    @strMsg      - Logged message
    */
    void log(std::string strCategory, std::string strSection, std::string strMsg);

    /**
    Automatically logs the category to "error". Kinda redundant.
    @strSection  - Tags the message appropriately (used for modules, usually)
    @strMsg      - Logged message
    */
    void logError(std::string strSection, std::string strMsg);
};

void Logger::log(std::string strCategory, std::string strSection, std::string strMsg) {
    std::string strFilePath = "log/" + strCategory + ".log";
    FILE* fileLog = fopen(strFilePath.c_str(), "a+");

    time_t t = time(0);   // get time now
    struct tm* now = localtime( &t );
    fprintf(fileLog, "[%02hi.%02hi.%hi : %02hi:%02hi:%02hi] %s : %s\n",
                now->tm_mon, now->tm_mday, now->tm_year + 1900,
                now->tm_hour, now->tm_min, now->tm_sec,
                strSection.c_str(), strMsg.c_str());
    fclose(fileLog);
}

void Logger::logError(std::string strSection, std::string strMsg) {
    std::string strFilePath = "log/error.log";
    FILE* fileLog = fopen(strFilePath.c_str(), "a+");

    time_t t = time(0);   // get time now
    struct tm* now = localtime( &t );
    fprintf(fileLog, "[%02hi.%02hi.%hi : %02hi:%02hi:%02hi] %s : %s",
                now->tm_mon, now->tm_mday, now->tm_year + 1900,
                now->tm_hour, now->tm_min, now->tm_sec,
                strSection.c_str(), strMsg.c_str());
    fclose(fileLog);
}

#endif //__LOG_H__