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// SPDX-License-Identifier: GPL-2.0-or-later
// Copyright The Music Player Daemon Project
#include "config.h"
#include "ConfigGlue.hxx"
#include "event/Thread.hxx"
#include "decoder/DecoderList.hxx"
#include "decoder/DecoderPlugin.hxx"
#include "input/Init.hxx"
#include "input/InputStream.hxx"
#include "tag/Handler.hxx"
#include "tag/Generic.hxx"
#include "tag/Names.hxx"
#include "fs/Path.hxx"
#include "fs/NarrowPath.hxx"
#include "pcm/AudioFormat.hxx"
#include "lib/fmt/AudioFormatFormatter.hxx"
#include "cmdline/OptionDef.hxx"
#include "cmdline/OptionParser.hxx"
#include "util/ScopeExit.hxx"
#include "util/StringBuffer.hxx"
#include "util/PrintException.hxx"
#include "Log.hxx"
#include "LogBackend.hxx"
#include <fmt/core.h>
#include <cassert>
#include <stdexcept>
#include <unistd.h>
#include <stdlib.h>
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
struct CommandLine {
const char *decoder = nullptr;
const char *uri = nullptr;
FromNarrowPath config_path;
bool verbose = false;
};
enum Option {
OPTION_CONFIG,
OPTION_VERBOSE,
};
static constexpr OptionDef option_defs[] = {
{"config", 0, true, "Load a MPD configuration file"},
{"verbose", 'v', false, "Verbose logging"},
};
static CommandLine
ParseCommandLine(int argc, char **argv)
{
CommandLine c;
OptionParser option_parser(option_defs, argc, argv);
while (auto o = option_parser.Next()) {
switch (Option(o.index)) {
case OPTION_CONFIG:
c.config_path = o.value;
break;
case OPTION_VERBOSE:
c.verbose = true;
break;
}
}
auto args = option_parser.GetRemaining();
if (args.size() != 2)
throw std::runtime_error("Usage: read_tags [--verbose] DECODER URI");
c.decoder = args[0];
c.uri = args[1];
return c;
}
class GlobalInit {
const ConfigData config;
EventThread io_thread;
const ScopeInputPluginsInit input_plugins_init{config, io_thread.GetEventLoop()};
const ScopeDecoderPluginsInit decoder_plugins_init{config};
public:
explicit GlobalInit(Path config_path)
:config(AutoLoadConfigFile(config_path))
{
io_thread.Start();
}
};
class DumpTagHandler final : public NullTagHandler {
bool empty = true;
public:
DumpTagHandler() noexcept
:NullTagHandler(WANT_DURATION|WANT_TAG|WANT_PAIR|WANT_PICTURE) {}
bool IsEmpty() const noexcept {
return empty;
}
void OnDuration(SongTime duration) noexcept override {
fmt::print("duration={}\n", duration.ToDoubleS());
}
void OnTag(TagType type, std::string_view value) noexcept override {
fmt::print("[{}]={:?}\n", tag_item_names[type], value);
empty = false;
}
void OnPair(std::string_view key, std::string_view value) noexcept override {
fmt::print("{:?}={:?}\n", key, value);
}
void OnAudioFormat(AudioFormat af) noexcept override {
fmt::print("{}\n", af);
}
void OnPicture(const char *mime_type,
std::span<const std::byte> buffer) noexcept override {
fmt::print("picture mime={:?} size={}\n",
mime_type, buffer.size());
}
};
int main(int argc, char **argv)
try {
#ifdef HAVE_LOCALE_H
/* initialize locale */
setlocale(LC_CTYPE,"");
#endif
const auto c = ParseCommandLine(argc, argv);
SetLogThreshold(c.verbose ? LogLevel::DEBUG : LogLevel::INFO);
const GlobalInit init{c.config_path};
auto *plugin = decoder_plugin_from_name(c.decoder);
if (plugin == nullptr) {
fmt::print(stderr, "No such decoder: {:?}\n", c.decoder);
return EXIT_FAILURE;
}
DumpTagHandler h;
bool success;
try {
success = plugin->ScanFile(FromNarrowPath(c.uri), h);
} catch (...) {
PrintException(std::current_exception());
success = false;
}
Mutex mutex;
InputStreamPtr is;
if (!success && plugin->scan_stream != nullptr) {
is = InputStream::OpenReady(c.uri, mutex);
success = plugin->ScanStream(*is, h);
}
if (!success) {
fmt::print(stderr, "Failed to read tags\n");
return EXIT_FAILURE;
}
if (h.IsEmpty()) {
if (is)
ScanGenericTags(*is, h);
else
ScanGenericTags(FromNarrowPath(c.uri), h);
}
return 0;
} catch (...) {
PrintException(std::current_exception());
return EXIT_FAILURE;
}
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