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78 lines
1.6 KiB
C++
78 lines
1.6 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#include "Handler.hxx"
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#include "Builder.hxx"
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#include "pcm/AudioFormat.hxx"
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#include "util/CharUtil.hxx"
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#include "util/StringCompare.hxx"
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#include <algorithm>
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using std::string_view_literals::operator""sv;
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void
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NullTagHandler::OnTag(TagType, std::string_view) noexcept
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{
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}
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void
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NullTagHandler::OnPair(std::string_view, std::string_view) noexcept
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{
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}
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void
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NullTagHandler::OnPicture(const char *, std::span<const std::byte>) noexcept
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{
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}
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void
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NullTagHandler::OnAudioFormat([[maybe_unused]] AudioFormat af) noexcept
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{
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}
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void
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AddTagHandler::OnDuration(SongTime duration) noexcept
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{
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tag.SetDuration(duration);
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}
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/**
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* Skip leading zeroes and a non-decimal suffix.
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*/
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static std::string_view
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NormalizeDecimal(std::string_view s)
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{
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auto start = std::find_if(s.begin(), s.end(),
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[](char ch){ return ch != '0'; });
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auto end = std::find_if(start, s.end(),
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[](char ch){ return !IsDigitASCII(ch); });
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return std::string_view{start, std::size_t(std::distance(start, end))};
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}
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void
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AddTagHandler::OnTag(TagType type, std::string_view value) noexcept
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{
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if (type == TAG_TRACK || type == TAG_DISC) {
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/* filter out this extra data and leading zeroes */
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value = NormalizeDecimal(value);
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}
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tag.AddItem(type, value);
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}
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void
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FullTagHandler::OnPair(std::string_view name, std::string_view) noexcept
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{
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if (StringIsEqualIgnoreCase(name, "cuesheet"sv))
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tag.SetHasPlaylist(true);
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}
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void
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FullTagHandler::OnAudioFormat(AudioFormat af) noexcept
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{
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if (audio_format != nullptr)
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*audio_format = af;
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}
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