mirror of
https://github.com/KjellKod/g3log.git
synced 2024-12-13 10:42:56 +01:00
110 lines
4.2 KiB
C++
110 lines
4.2 KiB
C++
/** ==========================================================================
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* 2013 by KjellKod.cc. This is PUBLIC DOMAIN to use at your own risk and comes
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* with no warranties. This code is yours to share, use and modify with no
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* strings attached and no restrictions or obligations.
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*
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* For more information see g3log/LICENSE or refer refer to http://unlicense.org
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* ============================================================================*/
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#include "g3log/filesink.hpp"
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#include "filesinkhelper.ipp"
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#include <cassert>
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#include <chrono>
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namespace g3 {
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using namespace internal;
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FileSink::FileSink(const std::string &log_prefix, const std::string &log_directory, const std::string& logger_id)
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: _log_details_func(&LogMessage::DefaultLogDetailsToString)
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,_log_file_with_path(log_directory)
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, _log_prefix_backup(log_prefix)
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, _outptr(new std::ofstream)
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, _header("\t\tLOG format: [YYYY/MM/DD hh:mm:ss uuu* LEVEL FILE->FUNCTION:LINE] message\n\n\t\t(uuu*: microseconds fractions of the seconds value)\n\n")
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, _firstEntry(true)
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{
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_log_prefix_backup = prefixSanityFix(log_prefix);
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if (!isValidFilename(_log_prefix_backup)) {
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std::cerr << "g3log: forced abort due to illegal log prefix [" << log_prefix << "]" << std::endl;
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abort();
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}
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std::string file_name = createLogFileName(_log_prefix_backup, logger_id);
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_log_file_with_path = pathSanityFix(_log_file_with_path, file_name);
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_outptr = createLogFile(_log_file_with_path);
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if (!_outptr) {
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std::cerr << "Cannot write log file to location, attempting current directory" << std::endl;
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_log_file_with_path = "./" + file_name;
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_outptr = createLogFile(_log_file_with_path);
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}
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assert(_outptr && "cannot open log file at startup");
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}
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FileSink::~FileSink() {
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std::string exit_msg {"g3log g3FileSink shutdown at: "};
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auto now = std::chrono::system_clock::now();
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exit_msg.append(localtime_formatted(now, internal::time_formatted)).append("\n");
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filestream() << exit_msg << std::flush;
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exit_msg.append("Log file at: [").append(_log_file_with_path).append("]\n");
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std::cerr << exit_msg << std::flush;
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}
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// The actual log receiving function
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void FileSink::fileWrite(LogMessageMover message) {
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if (_firstEntry ) {
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addLogFileHeader();
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_firstEntry = false;
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}
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std::ofstream &out(filestream());
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out << message.get().toString(_log_details_func) << std::flush;
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}
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std::string FileSink::changeLogFile(const std::string &directory, const std::string &logger_id) {
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auto now = std::chrono::system_clock::now();
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auto now_formatted = g3::localtime_formatted(now, {internal::date_formatted + " " + internal::time_formatted});
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std::string file_name = createLogFileName(_log_prefix_backup, logger_id);
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std::string prospect_log = directory + file_name;
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std::unique_ptr<std::ofstream> log_stream = createLogFile(prospect_log);
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if (nullptr == log_stream) {
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filestream() << "\n" << now_formatted << " Unable to change log file. Illegal filename or busy? Unsuccessful log name was: " << prospect_log;
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return {}; // no success
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}
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addLogFileHeader();
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std::ostringstream ss_change;
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ss_change << "\n\tChanging log file from : " << _log_file_with_path;
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ss_change << "\n\tto new location: " << prospect_log << "\n";
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filestream() << now_formatted << ss_change.str();
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ss_change.str("");
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std::string old_log = _log_file_with_path;
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_log_file_with_path = prospect_log;
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_outptr = std::move(log_stream);
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ss_change << "\n\tNew log file. The previous log file was at: ";
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ss_change << old_log << "\n";
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filestream() << now_formatted << ss_change.str();
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return _log_file_with_path;
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}
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std::string FileSink::fileName() {
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return _log_file_with_path;
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}
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void FileSink::overrideLogDetails(LogMessage::LogDetailsFunc func) {
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_log_details_func = func;
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}
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void FileSink::overrideLogHeader(const std::string& change) {
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_header = change;
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}
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void FileSink::addLogFileHeader() {
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filestream() << header(_header);
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}
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} // g3
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