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