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#include "debugging.hpp"
#include <chrono>
#include <memory>
#include <functional>
#include <components/crashcatcher/crashcatcher.hpp>
#ifdef _WIN32
# include <components/crashcatcher/windows_crashcatcher.hpp>
# undef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
namespace Debug
{
#ifdef _WIN32
bool isRedirected(DWORD nStdHandle)
{
DWORD fileType = GetFileType(GetStdHandle(nStdHandle));
return (fileType == FILE_TYPE_DISK) || (fileType == FILE_TYPE_PIPE);
}
bool attachParentConsole()
{
if (GetConsoleWindow() != nullptr)
return true;
bool inRedirected = isRedirected(STD_INPUT_HANDLE);
bool outRedirected = isRedirected(STD_OUTPUT_HANDLE);
bool errRedirected = isRedirected(STD_ERROR_HANDLE);
if (AttachConsole(ATTACH_PARENT_PROCESS))
{
fflush(stdout);
fflush(stderr);
std::cout.flush();
std::cerr.flush();
// this looks dubious but is really the right way
if (!inRedirected)
{
_wfreopen(L"CON", L"r", stdin);
freopen("CON", "r", stdin);
}
if (!outRedirected)
{
_wfreopen(L"CON", L"w", stdout);
freopen("CON", "w", stdout);
}
if (!errRedirected)
{
_wfreopen(L"CON", L"w", stderr);
freopen("CON", "w", stderr);
}
return true;
}
return false;
}
#endif
std::streamsize DebugOutputBase::write(const char *str, std::streamsize size)
{
if (size <= 0)
return size;
std::string_view msg{str, size_t(size)};
// Skip debug level marker
Level level = getLevelMarker(str);
if (level != NoLevel)
msg = msg.substr(1);
char prefix[32];
int prefixSize;
{
prefix[0] = '[';
uint64_t ms = std::chrono::duration_cast<std::chrono::milliseconds>(
std::chrono::high_resolution_clock::now().time_since_epoch()).count();
std::time_t t = ms / 1000;
prefixSize = std::strftime(prefix + 1, sizeof(prefix) - 1, "%T", std::localtime(&t)) + 1;
char levelLetter = " EWIVD*"[int(level)];
prefixSize += snprintf(prefix + prefixSize, sizeof(prefix) - prefixSize,
".%03u %c] ", static_cast<unsigned>(ms % 1000), levelLetter);
}
while (!msg.empty())
{
if (msg[0] == 0)
break;
size_t lineSize = 1;
while (lineSize < msg.size() && msg[lineSize - 1] != '\n')
lineSize++;
writeImpl(prefix, prefixSize, level);
writeImpl(msg.data(), lineSize, level);
msg = msg.substr(lineSize);
}
return size;
}
Level DebugOutputBase::getLevelMarker(const char *str)
{
if (unsigned(*str) <= unsigned(Marker))
{
return Level(*str);
}
return NoLevel;
}
void DebugOutputBase::fillCurrentDebugLevel()
{
const char* env = getenv("OPENMW_DEBUG_LEVEL");
if (env)
{
std::string value(env);
if (value == "ERROR")
CurrentDebugLevel = Error;
else if (value == "WARNING")
CurrentDebugLevel = Warning;
else if (value == "INFO")
CurrentDebugLevel = Info;
else if (value == "VERBOSE")
CurrentDebugLevel = Verbose;
else if (value == "DEBUG")
CurrentDebugLevel = Debug;
return;
}
CurrentDebugLevel = Verbose;
}
}
static std::unique_ptr<std::ostream> rawStdout = nullptr;
std::ostream& getRawStdout()
{
return rawStdout ? *rawStdout : std::cout;
}
int wrapApplication(int (*innerApplication)(int argc, char *argv[]), int argc, char *argv[], const std::string& appName)
{
#if defined _WIN32
(void)Debug::attachParentConsole();
#endif
rawStdout = std::make_unique<std::ostream>(std::cout.rdbuf());
// Some objects used to redirect cout and cerr
// Scope must be here, so this still works inside the catch block for logging exceptions
std::streambuf* cout_rdbuf = std::cout.rdbuf ();
std::streambuf* cerr_rdbuf = std::cerr.rdbuf ();
#if defined(_WIN32) && defined(_DEBUG)
boost::iostreams::stream_buffer<Debug::DebugOutput> sb;
#else
boost::iostreams::stream_buffer<Debug::Tee> coutsb;
boost::iostreams::stream_buffer<Debug::Tee> cerrsb;
std::ostream oldcout(cout_rdbuf);
std::ostream oldcerr(cerr_rdbuf);
#endif
const std::string logName = Misc::StringUtils::lowerCase(appName) + ".log";
boost::filesystem::ofstream logfile;
int ret = 0;
try
{
Files::ConfigurationManager cfgMgr;
#if defined(_WIN32) && defined(_DEBUG)
// Redirect cout and cerr to VS debug output when running in debug mode
sb.open(Debug::DebugOutput());
std::cout.rdbuf (&sb);
std::cerr.rdbuf (&sb);
#else
// Redirect cout and cerr to the log file
// If we are collecting a stack trace, append to existing log file
std::ios_base::openmode mode = std::ios::out;
if(argc == 2 && strcmp(argv[1], crash_switch) == 0)
mode |= std::ios::app;
logfile.open (boost::filesystem::path(cfgMgr.getLogPath() / logName), mode);
coutsb.open (Debug::Tee(logfile, oldcout));
cerrsb.open (Debug::Tee(logfile, oldcerr));
std::cout.rdbuf (&coutsb);
std::cerr.rdbuf (&cerrsb);
#endif
#if defined(_WIN32)
const std::string crashLogName = Misc::StringUtils::lowerCase(appName) + "-crash.dmp";
Crash::CrashCatcher crashy(argc, argv, (cfgMgr.getLogPath() / crashLogName).make_preferred().string());
#else
const std::string crashLogName = Misc::StringUtils::lowerCase(appName) + "-crash.log";
// install the crash handler as soon as possible. note that the log path
// does not depend on config being read.
crashCatcherInstall(argc, argv, (cfgMgr.getLogPath() / crashLogName).string());
#endif
ret = innerApplication(argc, argv);
}
catch (const std::exception& e)
{
#if (defined(__APPLE__) || defined(__linux) || defined(__unix) || defined(__posix))
if (!isatty(fileno(stdin)))
#endif
SDL_ShowSimpleMessageBox(0, (appName + ": Fatal error").c_str(), e.what(), nullptr);
Log(Debug::Error) << "Error: " << e.what();
ret = 1;
}
// Restore cout and cerr
std::cout.rdbuf(cout_rdbuf);
std::cerr.rdbuf(cerr_rdbuf);
Debug::CurrentDebugLevel = Debug::NoLevel;
return ret;
}
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