d2tweaks-rnd2k/vcpkg/spdlog_x86-windows-static/include/spdlog/pattern_formatter-inl.h
2024-04-16 21:45:38 -06:00

1396 lines
41 KiB
C++

// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
#pragma once
#ifndef SPDLOG_HEADER_ONLY
#include <spdlog/pattern_formatter.h>
#endif
#include <spdlog/details/fmt_helper.h>
#include <spdlog/details/log_msg.h>
#include <spdlog/details/os.h>
#include <spdlog/fmt/fmt.h>
#include <spdlog/formatter.h>
#include <algorithm>
#include <array>
#include <chrono>
#include <ctime>
#include <cctype>
#include <cstring>
#include <iterator>
#include <memory>
#include <mutex>
#include <string>
#include <thread>
#include <utility>
#include <vector>
namespace spdlog {
namespace details {
///////////////////////////////////////////////////////////////////////
// name & level pattern appender
///////////////////////////////////////////////////////////////////////
class scoped_padder
{
public:
scoped_padder(size_t wrapped_size, const padding_info &padinfo, memory_buf_t &dest)
: padinfo_(padinfo)
, dest_(dest)
{
remaining_pad_ = static_cast<long>(padinfo.width_) - static_cast<long>(wrapped_size);
if (remaining_pad_ <= 0)
{
return;
}
if (padinfo_.side_ == padding_info::pad_side::left)
{
pad_it(remaining_pad_);
remaining_pad_ = 0;
}
else if (padinfo_.side_ == padding_info::pad_side::center)
{
auto half_pad = remaining_pad_ / 2;
auto reminder = remaining_pad_ & 1;
pad_it(half_pad);
remaining_pad_ = half_pad + reminder; // for the right side
}
}
template<typename T>
static unsigned int count_digits(T n)
{
return fmt_helper::count_digits(n);
}
~scoped_padder()
{
if (remaining_pad_ >= 0)
{
pad_it(remaining_pad_);
}
else if (padinfo_.truncate_)
{
long new_size = static_cast<long>(dest_.size()) + remaining_pad_;
dest_.resize(static_cast<size_t>(new_size));
}
}
private:
void pad_it(long count)
{
fmt_helper::append_string_view(string_view_t(spaces_.data(), static_cast<size_t>(count)), dest_);
}
const padding_info &padinfo_;
memory_buf_t &dest_;
long remaining_pad_;
string_view_t spaces_{" ", 64};
};
struct null_scoped_padder
{
null_scoped_padder(size_t /*wrapped_size*/, const padding_info & /*padinfo*/, memory_buf_t & /*dest*/) {}
template<typename T>
static unsigned int count_digits(T /* number */)
{
return 0;
}
};
template<typename ScopedPadder>
class name_formatter final : public flag_formatter
{
public:
explicit name_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
ScopedPadder p(msg.logger_name.size(), padinfo_, dest);
fmt_helper::append_string_view(msg.logger_name, dest);
}
};
// log level appender
template<typename ScopedPadder>
class level_formatter final : public flag_formatter
{
public:
explicit level_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
const string_view_t &level_name = level::to_string_view(msg.level);
ScopedPadder p(level_name.size(), padinfo_, dest);
fmt_helper::append_string_view(level_name, dest);
}
};
// short log level appender
template<typename ScopedPadder>
class short_level_formatter final : public flag_formatter
{
public:
explicit short_level_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
string_view_t level_name{level::to_short_c_str(msg.level)};
ScopedPadder p(level_name.size(), padinfo_, dest);
fmt_helper::append_string_view(level_name, dest);
}
};
///////////////////////////////////////////////////////////////////////
// Date time pattern appenders
///////////////////////////////////////////////////////////////////////
static const char *ampm(const tm &t)
{
return t.tm_hour >= 12 ? "PM" : "AM";
}
static int to12h(const tm &t)
{
return t.tm_hour > 12 ? t.tm_hour - 12 : t.tm_hour;
}
// Abbreviated weekday name
static std::array<const char *, 7> days{{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}};
template<typename ScopedPadder>
class a_formatter final : public flag_formatter
{
public:
explicit a_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
string_view_t field_value{days[static_cast<size_t>(tm_time.tm_wday)]};
ScopedPadder p(field_value.size(), padinfo_, dest);
fmt_helper::append_string_view(field_value, dest);
}
};
// Full weekday name
static std::array<const char *, 7> full_days{{"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}};
template<typename ScopedPadder>
class A_formatter : public flag_formatter
{
public:
explicit A_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
string_view_t field_value{full_days[static_cast<size_t>(tm_time.tm_wday)]};
ScopedPadder p(field_value.size(), padinfo_, dest);
fmt_helper::append_string_view(field_value, dest);
}
};
// Abbreviated month
static const std::array<const char *, 12> months{{"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec"}};
template<typename ScopedPadder>
class b_formatter final : public flag_formatter
{
public:
explicit b_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
string_view_t field_value{months[static_cast<size_t>(tm_time.tm_mon)]};
ScopedPadder p(field_value.size(), padinfo_, dest);
fmt_helper::append_string_view(field_value, dest);
}
};
// Full month name
static const std::array<const char *, 12> full_months{
{"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}};
template<typename ScopedPadder>
class B_formatter final : public flag_formatter
{
public:
explicit B_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
string_view_t field_value{full_months[static_cast<size_t>(tm_time.tm_mon)]};
ScopedPadder p(field_value.size(), padinfo_, dest);
fmt_helper::append_string_view(field_value, dest);
}
};
// Date and time representation (Thu Aug 23 15:35:46 2014)
template<typename ScopedPadder>
class c_formatter final : public flag_formatter
{
public:
explicit c_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 24;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::append_string_view(days[static_cast<size_t>(tm_time.tm_wday)], dest);
dest.push_back(' ');
fmt_helper::append_string_view(months[static_cast<size_t>(tm_time.tm_mon)], dest);
dest.push_back(' ');
fmt_helper::append_int(tm_time.tm_mday, dest);
dest.push_back(' ');
// time
fmt_helper::pad2(tm_time.tm_hour, dest);
dest.push_back(':');
fmt_helper::pad2(tm_time.tm_min, dest);
dest.push_back(':');
fmt_helper::pad2(tm_time.tm_sec, dest);
dest.push_back(' ');
fmt_helper::append_int(tm_time.tm_year + 1900, dest);
}
};
// year - 2 digit
template<typename ScopedPadder>
class C_formatter final : public flag_formatter
{
public:
explicit C_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 2;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(tm_time.tm_year % 100, dest);
}
};
// Short MM/DD/YY date, equivalent to %m/%d/%y 08/23/01
template<typename ScopedPadder>
class D_formatter final : public flag_formatter
{
public:
explicit D_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 10;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(tm_time.tm_mon + 1, dest);
dest.push_back('/');
fmt_helper::pad2(tm_time.tm_mday, dest);
dest.push_back('/');
fmt_helper::pad2(tm_time.tm_year % 100, dest);
}
};
// year - 4 digit
template<typename ScopedPadder>
class Y_formatter final : public flag_formatter
{
public:
explicit Y_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 4;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::append_int(tm_time.tm_year + 1900, dest);
}
};
// month 1-12
template<typename ScopedPadder>
class m_formatter final : public flag_formatter
{
public:
explicit m_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 2;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(tm_time.tm_mon + 1, dest);
}
};
// day of month 1-31
template<typename ScopedPadder>
class d_formatter final : public flag_formatter
{
public:
explicit d_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 2;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(tm_time.tm_mday, dest);
}
};
// hours in 24 format 0-23
template<typename ScopedPadder>
class H_formatter final : public flag_formatter
{
public:
explicit H_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 2;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(tm_time.tm_hour, dest);
}
};
// hours in 12 format 1-12
template<typename ScopedPadder>
class I_formatter final : public flag_formatter
{
public:
explicit I_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 2;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(to12h(tm_time), dest);
}
};
// minutes 0-59
template<typename ScopedPadder>
class M_formatter final : public flag_formatter
{
public:
explicit M_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 2;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(tm_time.tm_min, dest);
}
};
// seconds 0-59
template<typename ScopedPadder>
class S_formatter final : public flag_formatter
{
public:
explicit S_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 2;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(tm_time.tm_sec, dest);
}
};
// milliseconds
template<typename ScopedPadder>
class e_formatter final : public flag_formatter
{
public:
explicit e_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
auto millis = fmt_helper::time_fraction<std::chrono::milliseconds>(msg.time);
const size_t field_size = 3;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad3(static_cast<uint32_t>(millis.count()), dest);
}
};
// microseconds
template<typename ScopedPadder>
class f_formatter final : public flag_formatter
{
public:
explicit f_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
auto micros = fmt_helper::time_fraction<std::chrono::microseconds>(msg.time);
const size_t field_size = 6;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad6(static_cast<size_t>(micros.count()), dest);
}
};
// nanoseconds
template<typename ScopedPadder>
class F_formatter final : public flag_formatter
{
public:
explicit F_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
auto ns = fmt_helper::time_fraction<std::chrono::nanoseconds>(msg.time);
const size_t field_size = 9;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad9(static_cast<size_t>(ns.count()), dest);
}
};
// seconds since epoch
template<typename ScopedPadder>
class E_formatter final : public flag_formatter
{
public:
explicit E_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
const size_t field_size = 10;
ScopedPadder p(field_size, padinfo_, dest);
auto duration = msg.time.time_since_epoch();
auto seconds = std::chrono::duration_cast<std::chrono::seconds>(duration).count();
fmt_helper::append_int(seconds, dest);
}
};
// AM/PM
template<typename ScopedPadder>
class p_formatter final : public flag_formatter
{
public:
explicit p_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 2;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::append_string_view(ampm(tm_time), dest);
}
};
// 12 hour clock 02:55:02 pm
template<typename ScopedPadder>
class r_formatter final : public flag_formatter
{
public:
explicit r_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 11;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(to12h(tm_time), dest);
dest.push_back(':');
fmt_helper::pad2(tm_time.tm_min, dest);
dest.push_back(':');
fmt_helper::pad2(tm_time.tm_sec, dest);
dest.push_back(' ');
fmt_helper::append_string_view(ampm(tm_time), dest);
}
};
// 24-hour HH:MM time, equivalent to %H:%M
template<typename ScopedPadder>
class R_formatter final : public flag_formatter
{
public:
explicit R_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 5;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(tm_time.tm_hour, dest);
dest.push_back(':');
fmt_helper::pad2(tm_time.tm_min, dest);
}
};
// ISO 8601 time format (HH:MM:SS), equivalent to %H:%M:%S
template<typename ScopedPadder>
class T_formatter final : public flag_formatter
{
public:
explicit T_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 8;
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::pad2(tm_time.tm_hour, dest);
dest.push_back(':');
fmt_helper::pad2(tm_time.tm_min, dest);
dest.push_back(':');
fmt_helper::pad2(tm_time.tm_sec, dest);
}
};
// ISO 8601 offset from UTC in timezone (+-HH:MM)
template<typename ScopedPadder>
class z_formatter final : public flag_formatter
{
public:
explicit z_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
z_formatter() = default;
z_formatter(const z_formatter &) = delete;
z_formatter &operator=(const z_formatter &) = delete;
void format(const details::log_msg &msg, const std::tm &tm_time, memory_buf_t &dest) override
{
const size_t field_size = 6;
ScopedPadder p(field_size, padinfo_, dest);
auto total_minutes = get_cached_offset(msg, tm_time);
bool is_negative = total_minutes < 0;
if (is_negative)
{
total_minutes = -total_minutes;
dest.push_back('-');
}
else
{
dest.push_back('+');
}
fmt_helper::pad2(total_minutes / 60, dest); // hours
dest.push_back(':');
fmt_helper::pad2(total_minutes % 60, dest); // minutes
}
private:
log_clock::time_point last_update_{std::chrono::seconds(0)};
int offset_minutes_{0};
int get_cached_offset(const log_msg &msg, const std::tm &tm_time)
{
// refresh every 10 seconds
if (msg.time - last_update_ >= std::chrono::seconds(10))
{
offset_minutes_ = os::utc_minutes_offset(tm_time);
last_update_ = msg.time;
}
return offset_minutes_;
}
};
// Thread id
template<typename ScopedPadder>
class t_formatter final : public flag_formatter
{
public:
explicit t_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
const auto field_size = ScopedPadder::count_digits(msg.thread_id);
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::append_int(msg.thread_id, dest);
}
};
// Current pid
template<typename ScopedPadder>
class pid_formatter final : public flag_formatter
{
public:
explicit pid_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &, const std::tm &, memory_buf_t &dest) override
{
const auto pid = static_cast<uint32_t>(details::os::pid());
auto field_size = ScopedPadder::count_digits(pid);
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::append_int(pid, dest);
}
};
template<typename ScopedPadder>
class v_formatter final : public flag_formatter
{
public:
explicit v_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
ScopedPadder p(msg.payload.size(), padinfo_, dest);
fmt_helper::append_string_view(msg.payload, dest);
}
};
class ch_formatter final : public flag_formatter
{
public:
explicit ch_formatter(char ch)
: ch_(ch)
{}
void format(const details::log_msg &, const std::tm &, memory_buf_t &dest) override
{
dest.push_back(ch_);
}
private:
char ch_;
};
// aggregate user chars to display as is
class aggregate_formatter final : public flag_formatter
{
public:
aggregate_formatter() = default;
void add_ch(char ch)
{
str_ += ch;
}
void format(const details::log_msg &, const std::tm &, memory_buf_t &dest) override
{
fmt_helper::append_string_view(str_, dest);
}
private:
std::string str_;
};
// mark the color range. expect it to be in the form of "%^colored text%$"
class color_start_formatter final : public flag_formatter
{
public:
explicit color_start_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
msg.color_range_start = dest.size();
}
};
class color_stop_formatter final : public flag_formatter
{
public:
explicit color_stop_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
msg.color_range_end = dest.size();
}
};
// print source location
template<typename ScopedPadder>
class source_location_formatter final : public flag_formatter
{
public:
explicit source_location_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
if (msg.source.empty())
{
return;
}
size_t text_size;
if (padinfo_.enabled())
{
// calc text size for padding based on "filename:line"
text_size = std::char_traits<char>::length(msg.source.filename) + ScopedPadder::count_digits(msg.source.line) + 1;
}
else
{
text_size = 0;
}
ScopedPadder p(text_size, padinfo_, dest);
fmt_helper::append_string_view(msg.source.filename, dest);
dest.push_back(':');
fmt_helper::append_int(msg.source.line, dest);
}
};
// print source filename
template<typename ScopedPadder>
class source_filename_formatter final : public flag_formatter
{
public:
explicit source_filename_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
if (msg.source.empty())
{
return;
}
size_t text_size = padinfo_.enabled() ? std::char_traits<char>::length(msg.source.filename) : 0;
ScopedPadder p(text_size, padinfo_, dest);
fmt_helper::append_string_view(msg.source.filename, dest);
}
};
template<typename ScopedPadder>
class short_filename_formatter final : public flag_formatter
{
public:
explicit short_filename_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4127) // consider using 'if constexpr' instead
#endif // _MSC_VER
static const char *basename(const char *filename)
{
// if the size is 2 (1 character + null terminator) we can use the more efficient strrchr
// the branch will be elided by optimizations
if (sizeof(os::folder_seps) == 2)
{
const char *rv = std::strrchr(filename, os::folder_seps[0]);
return rv != nullptr ? rv + 1 : filename;
}
else
{
const std::reverse_iterator<const char*> begin(filename + std::strlen(filename));
const std::reverse_iterator<const char*> end(filename);
const auto it = std::find_first_of(begin, end, std::begin(os::folder_seps), std::end(os::folder_seps) - 1);
return it != end ? it.base() : filename;
}
}
#ifdef _MSC_VER
#pragma warning(pop)
#endif // _MSC_VER
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
if (msg.source.empty())
{
return;
}
auto filename = basename(msg.source.filename);
size_t text_size = padinfo_.enabled() ? std::char_traits<char>::length(filename) : 0;
ScopedPadder p(text_size, padinfo_, dest);
fmt_helper::append_string_view(filename, dest);
}
};
template<typename ScopedPadder>
class source_linenum_formatter final : public flag_formatter
{
public:
explicit source_linenum_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
if (msg.source.empty())
{
return;
}
auto field_size = ScopedPadder::count_digits(msg.source.line);
ScopedPadder p(field_size, padinfo_, dest);
fmt_helper::append_int(msg.source.line, dest);
}
};
// print source funcname
template<typename ScopedPadder>
class source_funcname_formatter final : public flag_formatter
{
public:
explicit source_funcname_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
if (msg.source.empty())
{
return;
}
size_t text_size = padinfo_.enabled() ? std::char_traits<char>::length(msg.source.funcname) : 0;
ScopedPadder p(text_size, padinfo_, dest);
fmt_helper::append_string_view(msg.source.funcname, dest);
}
};
// print elapsed time since last message
template<typename ScopedPadder, typename Units>
class elapsed_formatter final : public flag_formatter
{
public:
using DurationUnits = Units;
explicit elapsed_formatter(padding_info padinfo)
: flag_formatter(padinfo)
, last_message_time_(log_clock::now())
{}
void format(const details::log_msg &msg, const std::tm &, memory_buf_t &dest) override
{
auto delta = (std::max)(msg.time - last_message_time_, log_clock::duration::zero());
auto delta_units = std::chrono::duration_cast<DurationUnits>(delta);
last_message_time_ = msg.time;
auto delta_count = static_cast<size_t>(delta_units.count());
auto n_digits = static_cast<size_t>(ScopedPadder::count_digits(delta_count));
ScopedPadder p(n_digits, padinfo_, dest);
fmt_helper::append_int(delta_count, dest);
}
private:
log_clock::time_point last_message_time_;
};
// Full info formatter
// pattern: [%Y-%m-%d %H:%M:%S.%e] [%n] [%l] %v
class full_formatter final : public flag_formatter
{
public:
explicit full_formatter(padding_info padinfo)
: flag_formatter(padinfo)
{}
void format(const details::log_msg &msg, const std::tm &tm_time, memory_buf_t &dest) override
{
using std::chrono::duration_cast;
using std::chrono::milliseconds;
using std::chrono::seconds;
// cache the date/time part for the next second.
auto duration = msg.time.time_since_epoch();
auto secs = duration_cast<seconds>(duration);
if (cache_timestamp_ != secs || cached_datetime_.size() == 0)
{
cached_datetime_.clear();
cached_datetime_.push_back('[');
fmt_helper::append_int(tm_time.tm_year + 1900, cached_datetime_);
cached_datetime_.push_back('-');
fmt_helper::pad2(tm_time.tm_mon + 1, cached_datetime_);
cached_datetime_.push_back('-');
fmt_helper::pad2(tm_time.tm_mday, cached_datetime_);
cached_datetime_.push_back(' ');
fmt_helper::pad2(tm_time.tm_hour, cached_datetime_);
cached_datetime_.push_back(':');
fmt_helper::pad2(tm_time.tm_min, cached_datetime_);
cached_datetime_.push_back(':');
fmt_helper::pad2(tm_time.tm_sec, cached_datetime_);
cached_datetime_.push_back('.');
cache_timestamp_ = secs;
}
dest.append(cached_datetime_.begin(), cached_datetime_.end());
auto millis = fmt_helper::time_fraction<milliseconds>(msg.time);
fmt_helper::pad3(static_cast<uint32_t>(millis.count()), dest);
dest.push_back(']');
dest.push_back(' ');
// append logger name if exists
if (msg.logger_name.size() > 0)
{
dest.push_back('[');
fmt_helper::append_string_view(msg.logger_name, dest);
dest.push_back(']');
dest.push_back(' ');
}
dest.push_back('[');
// wrap the level name with color
msg.color_range_start = dest.size();
// fmt_helper::append_string_view(level::to_c_str(msg.level), dest);
fmt_helper::append_string_view(level::to_string_view(msg.level), dest);
msg.color_range_end = dest.size();
dest.push_back(']');
dest.push_back(' ');
// add source location if present
if (!msg.source.empty())
{
dest.push_back('[');
const char *filename = details::short_filename_formatter<details::null_scoped_padder>::basename(msg.source.filename);
fmt_helper::append_string_view(filename, dest);
dest.push_back(':');
fmt_helper::append_int(msg.source.line, dest);
dest.push_back(']');
dest.push_back(' ');
}
// fmt_helper::append_string_view(msg.msg(), dest);
fmt_helper::append_string_view(msg.payload, dest);
}
private:
std::chrono::seconds cache_timestamp_{0};
memory_buf_t cached_datetime_;
};
} // namespace details
SPDLOG_INLINE pattern_formatter::pattern_formatter(
std::string pattern, pattern_time_type time_type, std::string eol, custom_flags custom_user_flags)
: pattern_(std::move(pattern))
, eol_(std::move(eol))
, pattern_time_type_(time_type)
, last_log_secs_(0)
, custom_handlers_(std::move(custom_user_flags))
{
std::memset(&cached_tm_, 0, sizeof(cached_tm_));
compile_pattern_(pattern_);
}
// use by default full formatter for if pattern is not given
SPDLOG_INLINE pattern_formatter::pattern_formatter(pattern_time_type time_type, std::string eol)
: pattern_("%+")
, eol_(std::move(eol))
, pattern_time_type_(time_type)
, last_log_secs_(0)
{
std::memset(&cached_tm_, 0, sizeof(cached_tm_));
formatters_.push_back(details::make_unique<details::full_formatter>(details::padding_info{}));
}
SPDLOG_INLINE std::unique_ptr<formatter> pattern_formatter::clone() const
{
custom_flags cloned_custom_formatters;
for (auto &it : custom_handlers_)
{
cloned_custom_formatters[it.first] = it.second->clone();
}
return details::make_unique<pattern_formatter>(pattern_, pattern_time_type_, eol_, std::move(cloned_custom_formatters));
}
SPDLOG_INLINE void pattern_formatter::format(const details::log_msg &msg, memory_buf_t &dest)
{
auto secs = std::chrono::duration_cast<std::chrono::seconds>(msg.time.time_since_epoch());
if (secs != last_log_secs_)
{
cached_tm_ = get_time_(msg);
last_log_secs_ = secs;
}
for (auto &f : formatters_)
{
f->format(msg, cached_tm_, dest);
}
// write eol
details::fmt_helper::append_string_view(eol_, dest);
}
SPDLOG_INLINE void pattern_formatter::set_pattern(std::string pattern)
{
pattern_ = std::move(pattern);
compile_pattern_(pattern_);
}
SPDLOG_INLINE std::tm pattern_formatter::get_time_(const details::log_msg &msg)
{
if (pattern_time_type_ == pattern_time_type::local)
{
return details::os::localtime(log_clock::to_time_t(msg.time));
}
return details::os::gmtime(log_clock::to_time_t(msg.time));
}
template<typename Padder>
SPDLOG_INLINE void pattern_formatter::handle_flag_(char flag, details::padding_info padding)
{
// process custom flags
auto it = custom_handlers_.find(flag);
if (it != custom_handlers_.end())
{
auto custom_handler = it->second->clone();
custom_handler->set_padding_info(padding);
formatters_.push_back(std::move(custom_handler));
return;
}
// process built-in flags
switch (flag)
{
case ('+'): // default formatter
formatters_.push_back(details::make_unique<details::full_formatter>(padding));
break;
case 'n': // logger name
formatters_.push_back(details::make_unique<details::name_formatter<Padder>>(padding));
break;
case 'l': // level
formatters_.push_back(details::make_unique<details::level_formatter<Padder>>(padding));
break;
case 'L': // short level
formatters_.push_back(details::make_unique<details::short_level_formatter<Padder>>(padding));
break;
case ('t'): // thread id
formatters_.push_back(details::make_unique<details::t_formatter<Padder>>(padding));
break;
case ('v'): // the message text
formatters_.push_back(details::make_unique<details::v_formatter<Padder>>(padding));
break;
case ('a'): // weekday
formatters_.push_back(details::make_unique<details::a_formatter<Padder>>(padding));
break;
case ('A'): // short weekday
formatters_.push_back(details::make_unique<details::A_formatter<Padder>>(padding));
break;
case ('b'):
case ('h'): // month
formatters_.push_back(details::make_unique<details::b_formatter<Padder>>(padding));
break;
case ('B'): // short month
formatters_.push_back(details::make_unique<details::B_formatter<Padder>>(padding));
break;
case ('c'): // datetime
formatters_.push_back(details::make_unique<details::c_formatter<Padder>>(padding));
break;
case ('C'): // year 2 digits
formatters_.push_back(details::make_unique<details::C_formatter<Padder>>(padding));
break;
case ('Y'): // year 4 digits
formatters_.push_back(details::make_unique<details::Y_formatter<Padder>>(padding));
break;
case ('D'):
case ('x'): // datetime MM/DD/YY
formatters_.push_back(details::make_unique<details::D_formatter<Padder>>(padding));
break;
case ('m'): // month 1-12
formatters_.push_back(details::make_unique<details::m_formatter<Padder>>(padding));
break;
case ('d'): // day of month 1-31
formatters_.push_back(details::make_unique<details::d_formatter<Padder>>(padding));
break;
case ('H'): // hours 24
formatters_.push_back(details::make_unique<details::H_formatter<Padder>>(padding));
break;
case ('I'): // hours 12
formatters_.push_back(details::make_unique<details::I_formatter<Padder>>(padding));
break;
case ('M'): // minutes
formatters_.push_back(details::make_unique<details::M_formatter<Padder>>(padding));
break;
case ('S'): // seconds
formatters_.push_back(details::make_unique<details::S_formatter<Padder>>(padding));
break;
case ('e'): // milliseconds
formatters_.push_back(details::make_unique<details::e_formatter<Padder>>(padding));
break;
case ('f'): // microseconds
formatters_.push_back(details::make_unique<details::f_formatter<Padder>>(padding));
break;
case ('F'): // nanoseconds
formatters_.push_back(details::make_unique<details::F_formatter<Padder>>(padding));
break;
case ('E'): // seconds since epoch
formatters_.push_back(details::make_unique<details::E_formatter<Padder>>(padding));
break;
case ('p'): // am/pm
formatters_.push_back(details::make_unique<details::p_formatter<Padder>>(padding));
break;
case ('r'): // 12 hour clock 02:55:02 pm
formatters_.push_back(details::make_unique<details::r_formatter<Padder>>(padding));
break;
case ('R'): // 24-hour HH:MM time
formatters_.push_back(details::make_unique<details::R_formatter<Padder>>(padding));
break;
case ('T'):
case ('X'): // ISO 8601 time format (HH:MM:SS)
formatters_.push_back(details::make_unique<details::T_formatter<Padder>>(padding));
break;
case ('z'): // timezone
formatters_.push_back(details::make_unique<details::z_formatter<Padder>>(padding));
break;
case ('P'): // pid
formatters_.push_back(details::make_unique<details::pid_formatter<Padder>>(padding));
break;
case ('^'): // color range start
formatters_.push_back(details::make_unique<details::color_start_formatter>(padding));
break;
case ('$'): // color range end
formatters_.push_back(details::make_unique<details::color_stop_formatter>(padding));
break;
case ('@'): // source location (filename:filenumber)
formatters_.push_back(details::make_unique<details::source_location_formatter<Padder>>(padding));
break;
case ('s'): // short source filename - without directory name
formatters_.push_back(details::make_unique<details::short_filename_formatter<Padder>>(padding));
break;
case ('g'): // full source filename
formatters_.push_back(details::make_unique<details::source_filename_formatter<Padder>>(padding));
break;
case ('#'): // source line number
formatters_.push_back(details::make_unique<details::source_linenum_formatter<Padder>>(padding));
break;
case ('!'): // source funcname
formatters_.push_back(details::make_unique<details::source_funcname_formatter<Padder>>(padding));
break;
case ('%'): // % char
formatters_.push_back(details::make_unique<details::ch_formatter>('%'));
break;
case ('u'): // elapsed time since last log message in nanos
formatters_.push_back(details::make_unique<details::elapsed_formatter<Padder, std::chrono::nanoseconds>>(padding));
break;
case ('i'): // elapsed time since last log message in micros
formatters_.push_back(details::make_unique<details::elapsed_formatter<Padder, std::chrono::microseconds>>(padding));
break;
case ('o'): // elapsed time since last log message in millis
formatters_.push_back(details::make_unique<details::elapsed_formatter<Padder, std::chrono::milliseconds>>(padding));
break;
case ('O'): // elapsed time since last log message in seconds
formatters_.push_back(details::make_unique<details::elapsed_formatter<Padder, std::chrono::seconds>>(padding));
break;
default: // Unknown flag appears as is
auto unknown_flag = details::make_unique<details::aggregate_formatter>();
if (!padding.truncate_)
{
unknown_flag->add_ch('%');
unknown_flag->add_ch(flag);
formatters_.push_back((std::move(unknown_flag)));
}
// fix issue #1617 (prev char was '!' and should have been treated as funcname flag instead of truncating flag)
// spdlog::set_pattern("[%10!] %v") => "[ main] some message"
// spdlog::set_pattern("[%3!!] %v") => "[mai] some message"
else
{
padding.truncate_ = false;
formatters_.push_back(details::make_unique<details::source_funcname_formatter<Padder>>(padding));
unknown_flag->add_ch(flag);
formatters_.push_back((std::move(unknown_flag)));
}
break;
}
}
// Extract given pad spec (e.g. %8X, %=8X, %-8!X, %8!X, %=8!X, %-8!X, %+8!X)
// Advance the given it pass the end of the padding spec found (if any)
// Return padding.
SPDLOG_INLINE details::padding_info pattern_formatter::handle_padspec_(std::string::const_iterator &it, std::string::const_iterator end)
{
using details::padding_info;
using details::scoped_padder;
const size_t max_width = 64;
if (it == end)
{
return padding_info{};
}
padding_info::pad_side side;
switch (*it)
{
case '-':
side = padding_info::pad_side::right;
++it;
break;
case '=':
side = padding_info::pad_side::center;
++it;
break;
default:
side = details::padding_info::pad_side::left;
break;
}
if (it == end || !std::isdigit(static_cast<unsigned char>(*it)))
{
return padding_info{}; // no padding if no digit found here
}
auto width = static_cast<size_t>(*it) - '0';
for (++it; it != end && std::isdigit(static_cast<unsigned char>(*it)); ++it)
{
auto digit = static_cast<size_t>(*it) - '0';
width = width * 10 + digit;
}
// search for the optional truncate marker '!'
bool truncate;
if (it != end && *it == '!')
{
truncate = true;
++it;
}
else
{
truncate = false;
}
return details::padding_info{std::min<size_t>(width, max_width), side, truncate};
}
SPDLOG_INLINE void pattern_formatter::compile_pattern_(const std::string &pattern)
{
auto end = pattern.end();
std::unique_ptr<details::aggregate_formatter> user_chars;
formatters_.clear();
for (auto it = pattern.begin(); it != end; ++it)
{
if (*it == '%')
{
if (user_chars) // append user chars found so far
{
formatters_.push_back(std::move(user_chars));
}
auto padding = handle_padspec_(++it, end);
if (it != end)
{
if (padding.enabled())
{
handle_flag_<details::scoped_padder>(*it, padding);
}
else
{
handle_flag_<details::null_scoped_padder>(*it, padding);
}
}
else
{
break;
}
}
else // chars not following the % sign should be displayed as is
{
if (!user_chars)
{
user_chars = details::make_unique<details::aggregate_formatter>();
}
user_chars->add_ch(*it);
}
}
if (user_chars) // append raw chars found so far
{
formatters_.push_back(std::move(user_chars));
}
}
} // namespace spdlog