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111 lines
2.0 KiB
C++
111 lines
2.0 KiB
C++
//
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// Log.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 18/06/2018.
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// Copyright © 2018 Thomas Harte. All rights reserved.
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//
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#pragma once
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namespace Log {
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// TODO: if adopting C++20, std::format would be a better model to apply below.
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// But I prefer C files to C++ streams, so here it is for now.
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enum class Source {
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ADB,
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Amiga,
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AmigaDisk,
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AmigaCopper,
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AmigaChipset,
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AmigaBlitter,
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AtariST,
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DirectAccessDevice,
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Enterprise,
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i8272,
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IntelligentKeyboard,
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IWM,
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M50740,
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Macintosh,
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MasterSystem,
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MFP68901,
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MSX,
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NCR5380,
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OpenGL,
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SCC,
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SCSI,
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StaticAnalyser,
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SZX,
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TapeUEF,
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TMS9918,
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TZX,
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WDFDC,
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};
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constexpr bool is_enabled(Source source) {
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#ifdef NDEBUG
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return false;
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#endif
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// Allow for compile-time source-level enabling and disabling of different sources.
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switch(source) {
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default: return true;
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// The following are all things I'm not actively working on.
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case Source::NCR5380:
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case Source::SCC: return false;
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}
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}
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constexpr const char *prefix(Source source) {
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switch(source) {
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case Source::StaticAnalyser: return "Analyser";
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case Source::WDFDC: return "WD FDC";
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case Source::SCSI: return "SCSI";
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case Source::SCC: return "SCC";
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case Source::NCR5380: return "5380";
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}
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}
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#include <cstdio>
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#include <cstdarg>
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template <Source source>
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class Logger {
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public:
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Logger() {}
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struct LogLine {
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public:
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LogLine(FILE *stream) : stream_(stream) {
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if constexpr (!is_enabled(source)) return;
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const auto source_prefix = prefix(source);
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if(source_prefix) {
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fprintf(stream_, "[%s] ", source_prefix);
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}
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}
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~LogLine() {
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if constexpr (!is_enabled(source)) return;
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fprintf(stream_, "\n");
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}
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void append(const char *format, ...) {
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if constexpr (!is_enabled(source)) return;
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va_list args;
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va_start(args, format);
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vfprintf(stream_, format, args);
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va_end(args);
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}
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private:
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FILE *stream_;
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};
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LogLine info() { return LogLine(stdout); }
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LogLine error() { return LogLine(stderr); }
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};
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}
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