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/*
* Copyright 2003-2020 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "Handler.hxx"
#include "Builder.hxx"
#include "pcm/AudioFormat.hxx"
#include "util/CharUtil.hxx"
#include "util/StringView.hxx"
#include <algorithm>
void
NullTagHandler::OnTag(TagType, StringView) noexcept
{
}
void
NullTagHandler::OnPair(StringView, StringView) noexcept
{
}
void
NullTagHandler::OnPicture(const char *, ConstBuffer<void>) noexcept
{
}
void
NullTagHandler::OnAudioFormat([[maybe_unused]] AudioFormat af) noexcept
{
}
void
AddTagHandler::OnDuration(SongTime duration) noexcept
{
tag.SetDuration(duration);
}
/**
* Skip leading zeroes and a non-decimal suffix.
*/
static StringView
NormalizeDecimal(StringView s)
{
auto start = std::find_if(s.begin(), s.end(),
[](char ch){ return ch != '0'; });
auto end = std::find_if(start, s.end(),
[](char ch){ return !IsDigitASCII(ch); });
return {start, end};
}
void
AddTagHandler::OnTag(TagType type, StringView value) noexcept
{
if (type == TAG_TRACK || type == TAG_DISC) {
/* filter out this extra data and leading zeroes */
value = NormalizeDecimal(value);
}
tag.AddItem(type, value);
}
void
FullTagHandler::OnPair(StringView name, StringView) noexcept
{
if (name.EqualsIgnoreCase("cuesheet"))
tag.SetHasPlaylist(true);
}
void
FullTagHandler::OnAudioFormat(AudioFormat af) noexcept
{
if (audio_format != nullptr)
*audio_format = af;
}
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