jak-project/common/log/log.cpp

157 lines
4.2 KiB
C++

#include "log.h"
#include <cstdio>
#include <cstdlib>
#include <mutex>
#include "third-party/fmt/color.h"
#ifdef _WIN32 // see lg::initialize
#define NOMINMAX
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
#endif
#include "common/util/Assert.h"
#include "common/util/FileUtil.h"
namespace lg {
struct Logger {
Logger() = default;
bool initialized = false;
FILE* fp = nullptr;
level stdout_log_level = level::trace;
level file_log_level = level::trace;
level flush_level = level::trace;
std::mutex mutex;
~Logger() {
// will run when program exits.
if (fp) {
fclose(fp);
}
}
};
Logger gLogger;
namespace internal {
const char* log_level_names[] = {"trace", "debug", "info", "warn", "error", "die"};
const fmt::color log_colors[] = {fmt::color::gray, fmt::color::turquoise, fmt::color::light_green,
fmt::color::yellow, fmt::color::red, fmt::color::hot_pink};
void log_message(level log_level, LogTime& now, const char* message) {
#ifdef __linux__
char date_time_buffer[128];
time_t now_seconds = now.tv.tv_sec;
auto now_milliseconds = now.tv.tv_usec / 1000;
strftime(date_time_buffer, 128, "%Y-%m-%d %H:%M:%S", localtime(&now_seconds));
std::string date_string = fmt::format("[{}:{:03d}]", date_time_buffer, now_milliseconds);
#else
char date_time_buffer[128];
strftime(date_time_buffer, 128, "%Y-%m-%d %H:%M:%S", localtime(&now.tim));
std::string date_string = fmt::format("[{}]", date_time_buffer);
#endif
{
std::lock_guard<std::mutex> lock(gLogger.mutex);
if (gLogger.fp && log_level >= gLogger.file_log_level) {
// log to file
std::string file_string =
fmt::format("{} [{}] {}\n", date_string, log_level_names[int(log_level)], message);
fwrite(file_string.c_str(), file_string.length(), 1, gLogger.fp);
if (log_level >= gLogger.flush_level) {
fflush(gLogger.fp);
}
}
if (log_level >= gLogger.stdout_log_level) {
fmt::print("{} [", date_string);
fmt::print(fg(log_colors[int(log_level)]), "{}", log_level_names[int(log_level)]);
fmt::print("] {}\n", message);
if (log_level >= gLogger.flush_level) {
fflush(stdout);
}
}
}
if (log_level == level::die) {
exit(-1);
}
}
} // namespace internal
void set_file(const std::string& filename) {
ASSERT(!gLogger.fp);
file_util::create_dir_if_needed_for_file(filename);
gLogger.fp = fopen(filename.c_str(), "w");
ASSERT(gLogger.fp);
}
void set_flush_level(level log_level) {
gLogger.flush_level = log_level;
}
void set_file_level(level log_level) {
gLogger.file_log_level = log_level;
}
void set_stdout_level(level log_level) {
gLogger.stdout_log_level = log_level;
}
void set_max_debug_levels() {
gLogger.flush_level = level::trace;
gLogger.stdout_log_level = level::trace;
gLogger.file_log_level = level::trace;
}
void initialize() {
ASSERT(!gLogger.initialized);
#ifdef _WIN32
// Enable some console terminal flags. Some of these may not be enabled by default, unless
// the user edits their registry. This is clearly unwanted, so we just set them here ourselves.
// VIRTUAL_TERMINAL_PROCESSING enables support for ANSI colors in the stdout text, used by the
// logging tool.
// QUICK_EDIT_MODE enables various mouse-related stdin functions, such as right-click for
// copy-paste, scroll wheel to - shocker - scroll, etc.
// Get handle to stdout
HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
// get current stdout mode
DWORD modeStdOut;
GetConsoleMode(hStdOut, &modeStdOut);
// printf("stdout mode is: %08x", modeStdOut);
// Get handle to stdin
HANDLE hStdIn = GetStdHandle(STD_INPUT_HANDLE);
// get current stdin mode
DWORD modeStdIn;
GetConsoleMode(hStdIn, &modeStdIn);
// printf("stdin mode is: %08x", modeStdIn);
// enable VIRTUAL_TERMINAL_PROCESSING on stdout
modeStdOut |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
SetConsoleMode(hStdOut, modeStdOut);
// enable ENABLE_QUICK_EDIT_MODE on stdin
modeStdIn |= ENABLE_QUICK_EDIT_MODE;
SetConsoleMode(hStdIn, modeStdIn);
#endif
gLogger.initialized = true;
}
void finish() {
{
std::lock_guard<std::mutex> lock(gLogger.mutex);
if (gLogger.fp) {
fclose(gLogger.fp);
gLogger.fp = nullptr;
}
}
}
} // namespace lg