535 lines
14 KiB
C++
535 lines
14 KiB
C++
#pragma once
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#include <string>
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#include <chrono>
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#include <memory>
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#include <vector>
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#include "../formatter.h"
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#include "./log_msg.h"
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#include "./fast_oss.h"
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#include "./os.h"
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namespace c11log
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{
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namespace details {
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class flag_formatter
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{
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public:
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virtual void format(details::log_msg& msg) = 0;
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};
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///////////////////////////////////////////////////////////////////////
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// name & level pattern appenders
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///////////////////////////////////////////////////////////////////////
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namespace {
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class name_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted << msg.logger_name;
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}
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};
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}
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// log level appender
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class level_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted << level::to_str(msg.level);
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}
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};
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///////////////////////////////////////////////////////////////////////
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// Date time pattern appenders
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///////////////////////////////////////////////////////////////////////
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static const char* ampm(const tm& t)
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{
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return t.tm_hour >= 12 ? "PM" : "AM";
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}
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static int to12h(const tm& t)
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{
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return t.tm_hour > 12 ? t.tm_hour - 12 : t.tm_hour;
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}
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//Abbreviated weekday name
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static const std::string days[] { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
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class a_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_str(days[msg.tm_time.tm_wday]);
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}
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};
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//Full weekday name
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static const std::string full_days[] { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" };
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class A_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_str(full_days[msg.tm_time.tm_wday]);
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}
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};
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//Abbreviated month
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static const std::string months[] { "Jan", "Feb", "Mar", "Apr", "May", "June", "July", "Aug", "Sept", "Oct", "Nov", "Dec" };
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class b_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_str(months[msg.tm_time.tm_mon]);
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}
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};
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//Full month name
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static const std::string full_months[] { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" };
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class B_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_str(full_months[msg.tm_time.tm_mon]);
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}
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};
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//Date and time representation (Thu Aug 23 15:35:46 2014)
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class c_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_str(days[msg.tm_time.tm_wday]);
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msg.formatted.putc(' ');
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msg.formatted.put_str(months[msg.tm_time.tm_mon]);
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msg.formatted.putc(' ');
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msg.formatted.put_int(msg.tm_time.tm_mday, 2);
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msg.formatted.putc(' ');
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msg.formatted.put_int(msg.tm_time.tm_hour, 2);
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msg.formatted.putc(':');
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msg.formatted.put_int(msg.tm_time.tm_min, 2);
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msg.formatted.putc(':');
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msg.formatted.put_int(msg.tm_time.tm_sec, 2);
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}
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};
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// year - 2 digit
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class C_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(msg.tm_time.tm_year % 100, 2);
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}
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};
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// Short MM/DD/YY date, equivalent to %m/%d/%y 08/23/01
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class D_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(msg.tm_time.tm_mon + 1, 2);
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msg.formatted.putc('/');
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msg.formatted.put_int(msg.tm_time.tm_mday, 2);
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msg.formatted.putc('/');
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msg.formatted.put_int(msg.tm_time.tm_year % 100, 2);
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}
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};
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// year - 4 digit
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class Y_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(msg.tm_time.tm_year + 1900, 4);
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}
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};
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// month 1-12
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class m_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(msg.tm_time.tm_mon + 1, 2);
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}
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};
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// day of month 1-31
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class d_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(msg.tm_time.tm_mday, 2);
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}
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};
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// hours in 24 format 0-23
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class H_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(msg.tm_time.tm_hour, 2);
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}
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};
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// hours in 12 format 1-12
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class I_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(to12h(msg.tm_time), 2);
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}
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};
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// ninutes 0-59
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class M_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(msg.tm_time.tm_min, 2);
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}
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};
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// seconds 0-59
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class S_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(msg.tm_time.tm_sec, 2);
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}
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};
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// milliseconds
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class e_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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auto duration = msg.time.time_since_epoch();
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auto millis = std::chrono::duration_cast<std::chrono::milliseconds>(duration).count() % 1000;
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msg.formatted.put_int(static_cast<int>(millis), 3);
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}
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};
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// AM/PM
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class p_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_data(ampm(msg.tm_time), 2);
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}
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};
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// 12 hour clock 02:55:02 pm
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class r_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(to12h(msg.tm_time), 2);
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msg.formatted.putc(':');
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msg.formatted.put_int(msg.tm_time.tm_min, 2);
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msg.formatted.putc(':');
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msg.formatted.put_int(msg.tm_time.tm_sec, 2);
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msg.formatted.putc(' ');
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msg.formatted.put_data(ampm(msg.tm_time), 2);
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}
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};
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// 24-hour HH:MM time, equivalent to %H:%M
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class R_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(msg.tm_time.tm_hour, 2);
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msg.formatted.putc(':');
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msg.formatted.put_int(msg.tm_time.tm_min, 2);
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}
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};
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// ISO 8601 time format (HH:MM:SS), equivalent to %H:%M:%S
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class T_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_int(msg.tm_time.tm_hour, 2);
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msg.formatted.putc(':');
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msg.formatted.put_int(msg.tm_time.tm_min, 2);
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msg.formatted.putc(':');
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msg.formatted.put_int(msg.tm_time.tm_sec, 2);
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}
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};
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// ISO 8601 offset from UTC in timezone (HH:MM)
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class z_formatter :public flag_formatter
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{
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public:
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void format(log_msg& msg) override
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{
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std::lock_guard<std::mutex> l(_mutex);
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using namespace std::chrono;
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auto diff = msg.time - _last_update;
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auto secs_diff = abs((duration_cast<seconds>(diff)).count());
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if (secs_diff >= 2)
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{
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_value = get_value(msg);
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_last_update = msg.time;
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}
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msg.formatted.put_str(_value);
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}
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private:
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log_clock::time_point _last_update;
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std::string _value;
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std::string get_value(const log_msg& msg)
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{
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int total_minutes = os::utc_minutes_offset(msg.tm_time);
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int h = total_minutes / 60;
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int m = total_minutes % 60;
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fast_oss oss;
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oss.putc(h < 0 ? '-' : '+');
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oss.put_int(h, 2);
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oss.putc(':');
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oss.put_int(m, 2);
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return oss.str();
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}
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std::mutex _mutex;
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};
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class t_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_fast_oss(msg.raw);
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}
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};
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class ch_formatter :public flag_formatter
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{
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public:
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explicit ch_formatter(char ch) : _ch(ch)
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{}
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void format(details::log_msg& msg) override
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{
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msg.formatted.putc(_ch);
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}
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private:
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char _ch;
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};
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//aggregate user chars to display as is
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class aggregate_formatter :public flag_formatter
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{
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public:
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aggregate_formatter()
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{}
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void add_ch(char ch)
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{
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_str += ch;
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}
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void format(details::log_msg& msg) override
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{
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msg.formatted.put_str(_str);
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}
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private:
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std::string _str;
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};
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// Full info formatter
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// pattern: [%Y-%m-%d %H:%M:%S.%e] [%n] [%l] %t
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class full_formatter :public flag_formatter
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{
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void format(details::log_msg& msg) override
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{
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msg.formatted.putc('[');
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msg.formatted.put_int(msg.tm_time.tm_year+1900, 4);
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msg.formatted.putc('-');
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msg.formatted.put_int(msg.tm_time.tm_mon+ 1, 2);
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msg.formatted.putc('-');
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msg.formatted.put_int(msg.tm_time.tm_mday, 2);
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msg.formatted.putc(' ');
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msg.formatted.put_int(msg.tm_time.tm_hour, 2);
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msg.formatted.putc(':');
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msg.formatted.put_int(msg.tm_time.tm_min, 2);
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msg.formatted.putc(':');
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msg.formatted.put_int(msg.tm_time.tm_sec, 2);
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//millis
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msg.formatted.putc('.');
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auto duration = msg.time.time_since_epoch();
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auto millis = std::chrono::duration_cast<std::chrono::milliseconds>(duration).count() % 1000;
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msg.formatted.put_int(static_cast<int>(millis), 3);
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msg.formatted.putc(']');
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msg.formatted << " [" << msg.logger_name << "] [" << level::to_str(msg.level) << "] ";
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msg.formatted.put_fast_oss(msg.raw);
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}
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};
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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// pattern_formatter inline impl
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///////////////////////////////////////////////////////////////////////////////
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inline c11log::pattern_formatter::pattern_formatter(const std::string& pattern)
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{
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compile_pattern(pattern);
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}
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inline void c11log::pattern_formatter::compile_pattern(const std::string& pattern)
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{
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auto end = pattern.end();
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std::unique_ptr<details::aggregate_formatter> user_chars;
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for (auto it = pattern.begin(); it != end; ++it)
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{
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if (*it == '%')
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{
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if (user_chars) //append user chars found so far
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_formatters.push_back(std::move(user_chars));
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if (++it != end)
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handle_flag(*it);
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else
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break;
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}
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else // chars not following the % sign should be displayed as is
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{
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if (!user_chars)
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user_chars = std::unique_ptr<details::aggregate_formatter>(new details::aggregate_formatter());
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user_chars->add_ch(*it);
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}
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}
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if (user_chars) //append raw chars found so far
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{
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_formatters.push_back(std::move(user_chars));
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}
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}
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inline void c11log::pattern_formatter::handle_flag(char flag)
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{
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switch (flag)
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{
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// logger name
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case 'n':
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::name_formatter()));
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break;
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case 'l':
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::level_formatter()));
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break;
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case('t') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::t_formatter()));
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break;
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case('a') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::a_formatter()));
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break;
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case('A') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::A_formatter()));
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break;
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case('b') :
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case('h') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::b_formatter()));
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break;
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case('B') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::B_formatter()));
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break;
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case('c') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::c_formatter()));
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break;
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case('C') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::C_formatter()));
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break;
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case('Y') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::Y_formatter()));
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break;
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case('D') :
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case('x') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::D_formatter()));
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break;
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case('m') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::m_formatter()));
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break;
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case('d') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::d_formatter()));
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break;
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case('H') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::H_formatter()));
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break;
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case('I') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::I_formatter()));
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break;
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case('M') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::M_formatter()));
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break;
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case('S') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::S_formatter()));
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break;
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case('e') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::e_formatter()));
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break;
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case('p') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::p_formatter()));
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break;
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case('r') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::r_formatter()));
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break;
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case('R') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::R_formatter()));
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break;
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case('T') :
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case('X') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::T_formatter()));
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break;
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case('z') :
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::z_formatter()));
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break;
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case ('+'):
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::full_formatter()));
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break;
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default: //Unkown flag appears as is
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::ch_formatter('%')));
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_formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::ch_formatter(flag)));
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break;
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}
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}
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inline void c11log::pattern_formatter::format(details::log_msg& msg)
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{
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for (auto &f : _formatters)
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{
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f->format(msg);
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}
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//write eol
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msg.formatted.write(details::os::eol(), details::os::eol_size());
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}
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