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/*
* Copyright (c) 2021, Cesar Torres <shortanemoia@protonmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "M3UParser.h"
#include <AK/OwnPtr.h>
#include <AK/RefPtr.h>
#include <AK/ScopeGuard.h>
#include <AK/Utf8View.h>
#include <LibCore/Stream.h>
M3UParser::M3UParser()
{
}
NonnullOwnPtr<M3UParser> M3UParser::from_file(StringView path)
{
auto file_result = Core::Stream::File::open(path, Core::Stream::OpenMode::Read).release_value_but_fixme_should_propagate_errors();
auto contents = file_result->read_until_eof().release_value_but_fixme_should_propagate_errors();
auto use_utf8 = path.ends_with(".m3u8"sv, CaseSensitivity::CaseInsensitive);
return from_memory(DeprecatedString { contents, NoChomp }, use_utf8);
}
NonnullOwnPtr<M3UParser> M3UParser::from_memory(DeprecatedString const& m3u_contents, bool utf8)
{
auto parser = make<M3UParser>();
VERIFY(!m3u_contents.is_null() && !m3u_contents.is_empty() && !m3u_contents.is_whitespace());
parser->m_m3u_raw_data = m3u_contents;
parser->m_use_utf8 = utf8;
return parser;
}
NonnullOwnPtr<Vector<M3UEntry>> M3UParser::parse(bool include_extended_info)
{
auto vec = make<Vector<M3UEntry>>();
if (m_use_utf8) {
// TODO: Implement M3U8 parsing
TODO();
return vec;
}
auto lines = m_m3u_raw_data.split_view('\n');
bool has_extended_info_tag = include_extended_info && (lines[0] == "#EXTM3U");
M3UExtendedInfo metadata_for_next_file {};
for (auto& line : lines) {
line = line.trim_whitespace();
if (!has_extended_info_tag || !line.starts_with('#')) {
vec->append({ line, metadata_for_next_file });
metadata_for_next_file = {};
continue;
}
auto tag = [&line](StringView tag_name) -> Optional<StringView> {
if (line.starts_with(tag_name)) {
auto value = line.substring_view(tag_name.length());
VERIFY(!value.is_empty());
return value;
}
return {};
};
if (auto ext_inf = tag("#EXTINF:"sv); ext_inf.has_value()) {
auto separator = ext_inf.value().find(',');
VERIFY(separator.has_value());
auto seconds = ext_inf.value().substring_view(0, separator.value());
VERIFY(!seconds.is_whitespace() && !seconds.is_null() && !seconds.is_empty());
metadata_for_next_file.track_length_in_seconds = seconds.to_uint();
auto display_name = ext_inf.value().substring_view(seconds.length() + 1);
VERIFY(!display_name.is_empty() && !display_name.is_null() && !display_name.is_empty());
metadata_for_next_file.track_display_title = display_name;
// TODO: support the alternative, non-standard #EXTINF value of a key=value dictionary
continue;
}
if (auto playlist = tag("#PLAYLIST:"sv); playlist.has_value())
m_parsed_playlist_title = move(playlist.value());
else if (auto ext_grp = tag("#EXTGRP:"sv); ext_grp.has_value())
metadata_for_next_file.group_name = move(ext_grp.value());
else if (auto ext_alb = tag("#EXTALB:"sv); ext_alb.has_value())
metadata_for_next_file.album_title = move(ext_alb.value());
else if (auto ext_art = tag("#EXTART:"sv); ext_art.has_value())
metadata_for_next_file.album_artist = move(ext_art.value());
else if (auto ext_genre = tag("#EXTGENRE:"sv); ext_genre.has_value())
metadata_for_next_file.album_genre = move(ext_genre.value());
// TODO: Support M3A files (M3U files with embedded mp3 files)
}
return vec;
}
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