forked from cculianu/Fulcrum
/
Logger.h
73 lines (63 loc) · 2.05 KB
/
Logger.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
//
// Fulcrum - A fast & nimble SPV Server for Bitcoin Cash
// Copyright (C) 2019-2020 Calin A. Culianu <calin.culianu@gmail.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program (see LICENSE.txt). If not, see
// <https://www.gnu.org/licenses/>.
//
#pragma once
#include <QObject>
#include <QString>
class Logger : public QObject
{
/** Abstract base class for a line-based logger */
Q_OBJECT
public:
explicit Logger(QObject *parent = nullptr);
virtual ~Logger();
enum Level {
Info = 0, Warning, Critical, Fatal, Debug
};
/// returns true if the logger is logging to a tty (and thus supports ANSI color codes, etc)
virtual bool isaTTY() const { return false; }
signals:
void log(int level, const QString & line); ///< call this or emit it to log a line
public slots:
virtual void gotLine(int level, const QString &) = 0;
};
class ConsoleLogger : public Logger
{
public:
explicit ConsoleLogger(QObject *parent = nullptr, bool stdOut = true);
bool isaTTY() const override;
public:
void gotLine(int level, const QString &) override;
private:
bool stdOut = true;
};
/// On Windows this just prints to stdout. On Unix, calls syslog()
class SysLogger : public ConsoleLogger
{
#ifdef Q_OS_UNIX
public:
SysLogger(QObject *parent = nullptr);
void gotLine(int level, const QString &) override;
bool isaTTY() const override { return !opened && ConsoleLogger::isaTTY(); }
private:
static bool opened;
#else
public:
using ConsoleLogger::ConsoleLogger;
#endif
};