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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <filesystem>
#include <memory>
#include <string>
#include <string_view>
#include "common/logging/filter.h"
#include "common/logging/log.h"
namespace Common::FS {
class IOFile;
}
namespace Common::Log {
class Filter;
/**
* Interface for logging backends. As loggers can be created and removed at runtime, this can be
* used by a frontend for adding a custom logging backend as needed
*/
class Backend {
public:
virtual ~Backend() = default;
virtual void SetFilter(const Filter& new_filter) {
filter = new_filter;
}
virtual const char* GetName() const = 0;
virtual void Write(const Entry& entry) = 0;
private:
Filter filter;
};
/**
* Backend that writes to stderr without any color commands
*/
class ConsoleBackend : public Backend {
public:
~ConsoleBackend() override;
static const char* Name() {
return "console";
}
const char* GetName() const override {
return Name();
}
void Write(const Entry& entry) override;
};
/**
* Backend that writes to stderr and with color
*/
class ColorConsoleBackend : public Backend {
public:
~ColorConsoleBackend() override;
static const char* Name() {
return "color_console";
}
const char* GetName() const override {
return Name();
}
void Write(const Entry& entry) override;
};
/**
* Backend that writes to a file passed into the constructor
*/
class FileBackend : public Backend {
public:
explicit FileBackend(const std::filesystem::path& filename);
~FileBackend() override;
static const char* Name() {
return "file";
}
const char* GetName() const override {
return Name();
}
void Write(const Entry& entry) override;
private:
std::unique_ptr<FS::IOFile> file;
std::size_t bytes_written = 0;
};
/**
* Backend that writes to Visual Studio's output window
*/
class DebuggerBackend : public Backend {
public:
~DebuggerBackend() override;
static const char* Name() {
return "debugger";
}
const char* GetName() const override {
return Name();
}
void Write(const Entry& entry) override;
};
void AddBackend(std::unique_ptr<Backend> backend);
void RemoveBackend(std::string_view backend_name);
Backend* GetBackend(std::string_view backend_name);
/**
* The global filter will prevent any messages from even being processed if they are filtered. Each
* backend can have a filter, but if the level is lower than the global filter, the backend will
* never get the message
*/
void SetGlobalFilter(const Filter& filter);
} // namespace Common::Log
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