96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
/*
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* Copyright (C) 2024 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LMS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "metadata/PlayList.hpp"
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#include <array>
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#include <string_view>
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#include "core/String.hpp"
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namespace lms::metadata
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{
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std::span<const std::filesystem::path> getSupportedPlayListFileExtensions()
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{
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static const std::array<std::filesystem::path, 2> fileExtensions{ ".m3u", "m3u8" };
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return fileExtensions;
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}
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namespace
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{
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struct Comment
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{
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std::string_view directive;
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std::string_view parameter;
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};
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std::optional<Comment> parseComment(std::string_view line)
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{
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if (line.empty() || line.front() != '#')
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return std::nullopt;
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Comment comment;
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const std::string_view::size_type parameterSeparator{ line.find(':') };
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if (parameterSeparator == std::string_view::npos)
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{
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comment.directive = line;
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}
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else
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{
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comment.directive = line.substr(0, parameterSeparator + 1);
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comment.parameter = line.substr(parameterSeparator + 1);
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};
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return comment;
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}
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} // namespace
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PlayList parsePlayList(std::istream& is)
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{
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PlayList playlist;
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std::string line;
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while (std::getline(is, line))
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{
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const std::string_view trimmedLine{ core::stringUtils::stringTrim(line) };
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if (trimmedLine.empty())
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continue;
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// Don't enforce #EXTM3U as first line: be permissive
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if (const std::optional<Comment> comment{ parseComment(trimmedLine) })
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{
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if (comment->directive == "#PLAYLIST:")
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playlist.name = comment->parameter;
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continue;
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}
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// filter out URI = scheme ":" ["//" authority] path ["?" query] ["#" fragment]
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// Consider an entry with a ':' is actually an url, as filenames are not supposed to have ':' on windows
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if (trimmedLine.find(':') != std::string_view::npos)
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continue;
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const std::filesystem::path path{ std::cbegin(trimmedLine), std::cend(trimmedLine) };
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playlist.files.emplace_back(path.lexically_normal());
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}
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return playlist;
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}
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} // namespace lms::metadata
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