124 lines
3.5 KiB
C++
124 lines
3.5 KiB
C++
// Copyright (c) 2013-2015 United States Government as represented by the Administrator of the
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// National Aeronautics and Space Administration. All Rights Reserved.
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#include "Log.h"
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#include "XPLMUtilities.h"
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#include <cstdarg>
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#include <cstdio>
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#include <ctime>
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#include <chrono>
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#include <iomanip>
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#include <sstream>
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// Implementation note: I initially wrote this class using C++ iostreams, but I couldn't find any
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// way to implement FormatLine without adding in a call to sprintf. It therefore seems more
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// efficient to me to just use C-style IO and call std::fprintf directly.
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namespace XPC
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{
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static std::FILE* fd;
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static void WriteTime(FILE* fd)
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{
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using namespace std::chrono;
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system_clock::time_point now = system_clock::now();
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std::time_t now_tt = system_clock::to_time_t(now);
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system_clock::time_point now_sec = system_clock::from_time_t(now_tt);
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milliseconds ms = duration_cast<milliseconds>(now - now_sec);
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std::tm * tm = std::localtime(&now_tt);
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std::stringstream ss;
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ss << std::setfill('0') << "["
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<< std::setw(2) << tm->tm_hour << ":"
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<< std::setw(2) << tm->tm_min << ":"
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<< std::setw(2) << tm->tm_sec << "."
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<< std::setw(3) << ms.count() << "]";
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std::fprintf(fd, ss.str().c_str());
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}
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void Log::Initialize(const std::string& version)
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{
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if (LOG_LEVEL == LOG_OFF)
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{
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return;
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}
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// Note: Mode "w" deletes an existing file with the same name. This means that we only
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// ever get the log from the last run. This matches the way that X-Plane treats its
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// log.
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fd = std::fopen("XPCLog.txt", "w");
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if (fd != NULL)
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{
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std::time_t rawtime;
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std::tm* timeinfo;
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std::time(&rawtime);
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timeinfo = std::localtime(&rawtime);
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char timeStr[16] = { 0 };
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std::strftime(timeStr, 16, "%Y-%m-%d", timeinfo);
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std::fprintf(fd, "X-Plane Connect [Version %s]\n", version.c_str());
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std::fprintf(fd, "Compiled %s %s\n", __DATE__, __TIME__);
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std::fprintf(fd, "Copyright (c) 2013-2015 United States Government as represented by the\n");
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std::fprintf(fd, "Administrator of the National Aeronautics and Space Administration.\n");
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std::fprintf(fd, "All Rights Reserved.\n\n");
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std::fprintf(fd, "This file contains debugging information about the X-Plane Connect plugin.\n");
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std::fprintf(fd, "If you have technical issues with the plugin, please report them by opening\n");
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std::fprintf(fd, "an issue on GitHub (https://github.com/nasa/XPlaneConnect/issues) or by\n");
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std::fprintf(fd, "emailing Christopher Teubert (christopher.a.teubert@nasa.gov).\n\n");
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int xpVer;
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int xplmVer;
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XPLMHostApplicationID hostID;
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XPLMGetVersions(&xpVer, &xplmVer, &hostID);
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std::fprintf(fd, "X-Plane Version: %d\n", xpVer);
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std::fprintf(fd, "Plugin Manager Version: %d\n", xplmVer);
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std::fprintf(fd, "Host Application ID: %d\n", hostID);
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std::fprintf(fd, "Log file generated on %s.\n", timeStr);
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std::fflush(fd);
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}
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}
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void Log::Close()
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{
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if (fd)
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{
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std::fclose(fd);
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}
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}
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void Log::WriteLine(int level, const std::string& tag, const std::string& value)
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{
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if (level > LOG_LEVEL || !fd)
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{
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return;
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}
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WriteTime(fd);
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std::fprintf(fd, "[%s] %s\n", tag.c_str(), value.c_str());
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std::fflush(fd);
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}
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void Log::FormatLine(int level, const std::string& tag, const std::string& format, ...)
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{
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va_list args;
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if (level > LOG_LEVEL || !fd)
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{
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return;
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}
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va_start(args, format);
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WriteTime(fd);
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std::fprintf(fd, "[%s] ", tag.c_str());
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std::vfprintf(fd, format.c_str(), args);
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std::fprintf(fd, "\n");
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std::fflush(fd);
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va_end(args);
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}
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}
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