/**

* SPDX-License-Identifier: GPL-2.0-or-later

*

* This file is part of osm2pgsql (https://osm2pgsql.org/).

*

* Copyright (C) 2006-2026 by the osm2pgsql developer community.

* For a full list of authors see the git log.

*/

#include "logging.hpp"

#include <osmium/thread/util.hpp>

#include <ctime>

namespace {

thread_local unsigned int this_thread_num = 0;

/// Global logger singleton

logger_t the_logger{};

} // anonymous namespace

/// Access the global logger singleton

logger_t &get_logger() noexcept { return the_logger; }

void logger_t::generate_common_prefix(std::string *str,

fmt::text_style const &ts,

char const *prefix) const

{

auto const now = std::time(nullptr);

std::tm tm_local{};

#ifdef _MSC_VER

if (localtime_s(&tm_local, &now) != 0) {

throw fmt::format_error("time_t value out of range");

}

#else

if (!localtime_r(&now, &tm_local)) {

throw fmt::format_error("time_t value out of range");

}

#endif

*str += fmt::format("{:%F %T} ", tm_local);

if (m_current_level == log_level::debug) {

*str += fmt::format(ts, "[{:02d}] ", this_thread_num);

}

if (prefix) {

*str += fmt::format(ts, "{}: ", prefix);

}

}

void logger_t::init_thread(unsigned int num)

{

// Store thread number in thread local variable

this_thread_num = num;

// Set thread name in operating system.

// On Linux thread names have a maximum length of 16 characters.

std::string name{"_osm2pgsql_"};

name.append(std::to_string(num));

osmium::thread::set_thread_name(name.c_str());

}