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log: encapsulate logger

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Signed-off-by: Amneesh Singh <natto@weirdnatto.in>
This commit is contained in:
Amneesh Singh
2023-09-23 21:09:44 +05:30
parent c3bf8b0ae8
commit 91a82eec7c
14 changed files with 158 additions and 97 deletions
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8
src/util/log.cc Normal file
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@@ -0,0 +1,8 @@
#include "log.hh"
logging::Logger glogger = logging::Logger();
void
matar::set_log_level(LogLevel level) {
glogger.set_level(level);
}

106
src/util/log.hh
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@@ -1,12 +1,10 @@
#pragma once
#include "util/loglevel.hh"
#include <fmt/ostream.h>
#include <iostream>
using fmt::print;
using std::clog;
namespace logger {
namespace logging {
namespace ansi {
static constexpr std::string_view RED = "\033[31m";
static constexpr std::string_view YELLOW = "\033[33m";
@@ -16,43 +14,69 @@ static constexpr std::string_view BOLD = "\033[1m";
static constexpr std::string_view RESET = "\033[0m";
}
template<typename... Args>
inline void
log_raw(const fmt::format_string<Args...>& fmt, Args&&... args) {
fmt::println(clog, fmt, std::forward<Args>(args)...);
using fmt::print;
class Logger {
using LogLevel = matar::LogLevel;
public:
Logger(LogLevel level = LogLevel::Debug)
: level(0) {
set_level(level);
}
template<typename... Args>
void log(const fmt::format_string<Args...>& fmt, Args&&... args) {
fmt::println(stream, fmt, std::forward<Args>(args)...);
}
template<typename... Args>
void debug(const fmt::format_string<Args...>& fmt, Args&&... args) {
if (level & static_cast<uint8_t>(LogLevel::Debug)) {
print(stream, "{}{}[DEBUG] ", ansi::MAGENTA, ansi::BOLD);
log(fmt, std::forward<Args>(args)...);
print(stream, ansi::RESET);
}
}
template<typename... Args>
void info(const fmt::format_string<Args...>& fmt, Args&&... args) {
if (level & static_cast<uint8_t>(LogLevel::Info)) {
print(stream, "{}[INFO] ", ansi::WHITE);
log(fmt, std::forward<Args>(args)...);
print(stream, ansi::RESET);
}
}
template<typename... Args>
void warn(const fmt::format_string<Args...>& fmt, Args&&... args) {
if (level & static_cast<uint8_t>(LogLevel::Warn)) {
print(stream, "{}[WARN] ", ansi::YELLOW);
log(fmt, std::forward<Args>(args)...);
print(stream, ansi::RESET);
}
}
template<typename... Args>
void error(const fmt::format_string<Args...>& fmt, Args&&... args) {
if (level & static_cast<uint8_t>(LogLevel::Error)) {
print(stream, "{}{}[ERROR] ", ansi::RED, ansi::BOLD);
log(fmt, std::forward<Args>(args)...);
print(stream, ansi::RESET);
}
}
void set_level(LogLevel level) {
this->level = (static_cast<uint8_t>(level) << 1) - 1;
}
void set_stream(std::ostream& stream) { this->stream = stream; }
private:
uint8_t level;
std::reference_wrapper<std::ostream> stream = std::clog;
};
}
template<typename... Args>
inline void
log_debug(const fmt::format_string<Args...>& fmt, Args&&... args) {
print(clog, "{}{}[DEBUG] ", ansi::MAGENTA, ansi::BOLD);
log_raw(fmt, std::forward<Args>(args)...);
print(clog, ansi::RESET);
}
extern logging::Logger glogger;
template<typename... Args>
inline void
log_info(const fmt::format_string<Args...>& fmt, Args&&... args) {
print(clog, "{}[INFO] ", ansi::WHITE);
log_raw(fmt, std::forward<Args>(args)...);
print(clog, ansi::RESET);
}
template<typename... Args>
inline void
log_warn(const fmt::format_string<Args...>& fmt, Args&&... args) {
print(clog, "{}[WARN] ", ansi::YELLOW);
log_raw(fmt, std::forward<Args>(args)...);
print(clog, ansi::RESET);
}
template<typename... Args>
inline void
log_error(const fmt::format_string<Args...>& fmt, Args&&... args) {
print(clog, "{}{}[ERROR] ", ansi::RED, ansi::BOLD);
log_raw(fmt, std::forward<Args>(args)...);
print(clog, ansi::RESET);
}
}
#define debug(value) logger::log_debug("{} = {}", #value, value)
#define debug(x) logger.debug("{} = {}", #x, x);

3
src/util/meson.build Normal file
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@@ -0,0 +1,3 @@
lib_sources += files(
'log.cc'
)