This commit is contained in:
Oliver 2019-06-01 23:51:14 +02:00
parent a5e52072fe
commit 762cc48220
2 changed files with 148 additions and 129 deletions

141
Log.cpp Normal file
View File

@ -0,0 +1,141 @@
#include "Log.h"
/*
class Log
*/
// static member
std::vector<Log::Output*> Log::outputs;
void Log::init() {
// add default console logger
if (outputs.empty())
outputs.push_back(new Log::ConsoleOutput());
}
void Log::stop() {
for (auto output : outputs)
delete output;
outputs.clear();
}
void Log::addLogfile(const std::string& filename, Level max) {
outputs.push_back(new Log::FileOutput(filename, max));
}
void Log::addLogfile(const std::string& filename, Level min, Level max) {
outputs.push_back(new Log::FileOutput(filename, min, max));
}
void Log::setConsoleLogLevel(Level lvl) {
outputs.at(0)->setLogLevel(lvl); // has to exist
}
void Log::setColoredOutput(bool enabled) {
((Log::ConsoleOutput*) outputs.at(0))->setColoredOutput(enabled); // has to exist
}
void Log::log(Level lvl, std::stringbuf* strb) {
for (Output* out : outputs) {
out->log(lvl, strb);
// reset stringbuffer read pointer to the beginning
strb->pubseekpos(0);
}
}
/*
* abstract class Output
* default implementations
*/
Log::Output::Output() {}
Log::Output::Output(Log::Level lvl_max) : lvl_max(lvl_max) {}
Log::Output::~Output() {}
void Log::Output::log(Log::Level lvl, std::stringbuf* sbuf) {
std::ostream* os = getOs(lvl);
if (os) {
printLogHeader(os, lvl);
*os << sbuf << std::endl;
}
}
void Log::Output::setLogLevel(Log::Level lvl) {
lvl_max = lvl;
}
void Log::Output::printLogHeader(std::ostream* os, Level lvl) {
static const char* LevelTag[] = {"", "[FATAL] ", "[ERROR] ", "[WARN ] ",
"[NOTE ] ", "[INFO ] ", "[DEBUG] ", "[TRACE] "};
// get current date/time
auto now = std::chrono::system_clock::now();
std::time_t now_c = std::chrono::system_clock::to_time_t(now);
*os << "[" << std::put_time(std::localtime(&now_c), "%F %T") << "]" << LevelTag[lvl];
}
/*
* class ConsoleOutput
*/
Log::ConsoleOutput::ConsoleOutput() : Output() {}
bool Log::ConsoleOutput::setColoredOutput(bool enabled) {
// TODO: check the terminals compatibility for colors
coloredOutput = enabled;
return true;
}
void Log::ConsoleOutput::log(Log::Level lvl, std::stringbuf* sbuf) {
static const char* esc_seq_start = "\033[";
static const char* esc_seq_reset = "\033[0m";
// OFF FATAL ERROR WARN NOTE INFO DEBUG TRACE
static const char* color_codes[] = {"", "1;31;40m", "31m", "33m", "96m", "32m", "0m", "0m"};
std::ostream* os = getOs(lvl);
if (os) {
// print colors if enabled
if (coloredOutput)
*os << esc_seq_start << color_codes[lvl];
Output::printLogHeader(os, lvl);
*os << sbuf;
// reset color at end of the line
if (coloredOutput)
*os << esc_seq_reset;
*os << std::endl;
}
}
std::ostream* Log::ConsoleOutput::getOs(Log::Level lvl) {
// out of scope?
if (!lvl || lvl > lvl_max)
return nullptr;
// stderr for FATAL, ERROR, WARN
if (lvl <= Log::Level::WARN)
return osErr;
else
return osStd;
}
/*
* class FileOutput
* logging to file
*/
Log::FileOutput::FileOutput(const std::string& filename, Log::Level lvl_max)
: Output(lvl_max), filename(filename), ofs(filename, std::ofstream::out | std::ofstream::app) {}
Log::FileOutput::FileOutput(const std::string& filename, Log::Level lvl_min, Log::Level lvl_max)
: Output(lvl_max), filename(filename), ofs(filename, std::ofstream::out | std::ofstream::app), lvl_min(lvl_min) {}
std::ostream* Log::FileOutput::getOs(Log::Level lvl) {
if (lvl_min <= lvl && lvl <= lvl_max)
return &ofs;
return nullptr;
}

136
Log.h
View File

@ -15,7 +15,7 @@ class Log {
Log() = delete;
Log(const Log&) = delete;
Log& operator=(const Log&) = delete;
~Log() = delete;
//~Log() = delete;
// set up the logger with a ConsoleOutput
static void init();
@ -26,11 +26,11 @@ class Log {
// abstract base class for a log sink
class Output {
public:
Output() {}
Output(Log::Level lvl_max) : lvl_max(lvl_max) {}
virtual ~Output() {}
Output();
Output(Log::Level lvl_max);
virtual ~Output();
virtual void log(Log::Level lvl, std::stringbuf* sbuf);
virtual void setLogLevel(Log::Level lvl) { lvl_max = lvl; }
virtual void setLogLevel(Log::Level lvl);
protected:
Log::Level lvl_max = INFO;
@ -41,9 +41,9 @@ class Log {
};
// logging to stdout/stderr
class ConsoleOutout : public Output {
class ConsoleOutput : public Output {
public:
ConsoleOutout();
ConsoleOutput();
virtual bool setColoredOutput(bool enabled);
private:
@ -143,125 +143,3 @@ class Log {
}
static void log(Level lvl, std::stringbuf* strb);
};
// static member
std::vector<Log::Output*> Log::outputs;
void Log::init() {
// add default console logger
if (outputs.empty())
outputs.push_back(new Log::ConsoleOutout());
}
void Log::stop() {
for (auto output : outputs)
delete output;
}
void Log::addLogfile(const std::string& filename, Level max) {
outputs.push_back(new Log::FileOutput(filename, max));
}
void Log::addLogfile(const std::string& filename, Level min, Level max) {
outputs.push_back(new Log::FileOutput(filename, min, max));
}
void Log::setConsoleLogLevel(Level lvl) {
outputs.at(0)->setLogLevel(lvl); // has to exist
}
void Log::setColoredOutput(bool enabled) {
((Log::ConsoleOutout*) outputs.at(0))->setColoredOutput(enabled); // has to exist
}
void Log::log(Level lvl, std::stringbuf* strb) {
for (Output* out : outputs) {
out->log(lvl, strb);
// reset stringbuffer read pointer to the beginning
strb->pubseekpos(0);
}
}
/*
* abstract class Ouput
* default implementations
*/
void Log::Output::log(Log::Level lvl, std::stringbuf* sbuf) {
std::ostream* os = getOs(lvl);
if (os) {
printLogHeader(os, lvl);
*os << sbuf << std::endl;
}
}
void Log::Output::printLogHeader(std::ostream* os, Level lvl) {
static const char* LevelTag[] = {"", "[FATAL] ", "[ERROR] ", "[WARN ] ",
"[NOTE ] ", "[INFO ] ", "[DEBUG] ", "[TRACE] "};
// get current date/time
auto now = std::chrono::system_clock::now();
std::time_t now_c = std::chrono::system_clock::to_time_t(now);
*os << "[" << std::put_time(std::localtime(&now_c), "%F %T") << "]" << LevelTag[lvl];
}
/* ConsoleOutout */
Log::ConsoleOutout::ConsoleOutout() : Output() {}
bool Log::ConsoleOutout::setColoredOutput(bool enabled) {
// TODO: check the terminals compatibility for colors
coloredOutput = enabled;
return true;
}
void Log::ConsoleOutout::log(Log::Level lvl, std::stringbuf* sbuf) {
static const char* esc_seq_start = "\033[";
static const char* esc_seq_reset = "\033[0m";
// OFF FATAL ERROR WARN NOTE INFO DEBUG TRACE
static const char* color_codes[] = {"", "1;31;40m", "31m", "33m", "96m", "32m", "0m", "0m"};
std::ostream* os = getOs(lvl);
if (os) {
// print colors if enabled
if (coloredOutput)
*os << esc_seq_start << color_codes[lvl];
Output::printLogHeader(os, lvl);
*os << sbuf;
// reset color at end of the line
if (coloredOutput)
*os << esc_seq_reset;
*os << std::endl;
}
}
std::ostream* Log::ConsoleOutout::getOs(Log::Level lvl) {
// out of scope?
if (!lvl || lvl > lvl_max)
return nullptr;
// stderr for FATAL, ERROR, WARN
if (lvl <= Log::Level::WARN)
return osErr;
else
return osStd;
}
/* FileOutput ( logging to file ) */
Log::FileOutput::FileOutput(const std::string& filename, Log::Level lvl_max)
: Output(lvl_max), filename(filename), ofs(filename, std::ofstream::out | std::ofstream::app) {}
Log::FileOutput::FileOutput(const std::string& filename, Log::Level lvl_min, Log::Level lvl_max)
: Output(lvl_max), filename(filename), ofs(filename, std::ofstream::out | std::ofstream::app), lvl_min(lvl_min) {}
std::ostream* Log::FileOutput::getOs(Log::Level lvl) {
if (lvl_min <= lvl && lvl <= lvl_max)
return &ofs;
return nullptr;
}