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108 lines
4.2 KiB
C++
108 lines
4.2 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/Utf8View.h>
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M3UParser::M3UParser()
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{
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}
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NonnullOwnPtr<M3UParser> M3UParser::from_file(const String path)
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{
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auto parser = make<M3UParser>();
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VERIFY(!path.is_null() && !path.is_empty() && !path.is_whitespace());
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parser->m_use_utf8 = path.ends_with(".m3u8", AK::CaseSensitivity::CaseInsensitive);
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FILE* file = fopen(path.characters(), "r");
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VERIFY(file != nullptr);
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fseek(file, 0, SEEK_END);
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size_t file_size = ftell(file);
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fseek(file, 0, SEEK_SET);
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VERIFY(file_size > 0);
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Vector<u8> temp_buffer;
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temp_buffer.resize(file_size);
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auto bytes_read = fread(temp_buffer.data(), 1, file_size, file);
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VERIFY(bytes_read == file_size);
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parser->m_m3u_raw_data = *new String(temp_buffer.span(), NoChomp);
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return parser;
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}
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NonnullOwnPtr<M3UParser> M3UParser::from_memory(const String& 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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bool has_extended_info_tag = false;
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if (!m_use_utf8) {
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auto lines = m_m3u_raw_data.split_view('\n');
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if (include_extended_info) {
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if (lines[0] == "#EXTM3U")
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has_extended_info_tag = true;
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}
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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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M3UEntry entry {};
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if (line.starts_with('#') && has_extended_info_tag) {
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if (line.starts_with("#EXTINF:")) {
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auto data = line.substring_view(8);
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auto separator = data.find(',');
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VERIFY(separator.has_value());
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auto seconds = data.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 = data.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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} else if (line.starts_with("#PLAYLIST:")) {
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auto name = line.substring_view(10);
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VERIFY(!name.is_empty());
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m_parsed_playlist_title = name;
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} else if (line.starts_with("#EXTGRP:")) {
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auto name = line.substring_view(8);
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VERIFY(!name.is_empty());
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metadata_for_next_file.group_name = name;
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} else if (line.starts_with("#EXTALB:")) {
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auto name = line.substring_view(8);
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VERIFY(!name.is_empty());
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metadata_for_next_file.album_title = name;
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} else if (line.starts_with("#EXTART:")) {
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auto name = line.substring_view(8);
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VERIFY(!name.is_empty());
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metadata_for_next_file.album_artist = name;
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} else if (line.starts_with("#EXTGENRE:")) {
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auto name = line.substring_view(10);
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VERIFY(!name.is_empty());
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metadata_for_next_file.album_genre = name;
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}
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//TODO: Support M3A files (M3U files with embedded mp3 files)
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} else {
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entry.path = line;
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entry.extended_info = metadata_for_next_file;
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vec->append(entry);
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metadata_for_next_file = {};
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}
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}
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} else {
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//TODO: Implement M3U8 parsing
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TODO();
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}
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return vec;
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}
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