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/*
* Copyright 2003-2017 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 "config.h"
#include "VorbisComments.hxx"
#include "XiphTags.hxx"
#include "tag/Table.hxx"
#include "tag/Handler.hxx"
#include "tag/Builder.hxx"
#include "tag/Tag.hxx"
#include "tag/VorbisComment.hxx"
#include "tag/ReplayGain.hxx"
#include "ReplayGainInfo.hxx"
#include "util/DivideString.hxx"
bool
vorbis_comments_to_replay_gain(ReplayGainInfo &rgi, char **comments) noexcept
{
rgi.Clear();
bool found = false;
while (*comments) {
if (ParseReplayGainVorbis(rgi, *comments))
found = true;
comments++;
}
return found;
}
/**
* Check if the comment's name equals the passed name, and if so, copy
* the comment value into the tag.
*/
static bool
vorbis_copy_comment(const char *comment,
const char *name, TagType tag_type,
const TagHandler &handler, void *handler_ctx)
{
const char *value;
value = vorbis_comment_value(comment, name);
if (value != nullptr) {
tag_handler_invoke_tag(handler, handler_ctx, tag_type, value);
return true;
}
return false;
}
static void
vorbis_scan_comment(const char *comment,
const TagHandler &handler, void *handler_ctx)
{
if (handler.pair != nullptr) {
const DivideString split(comment, '=');
if (split.IsDefined() && !split.empty())
tag_handler_invoke_pair(handler, handler_ctx,
split.GetFirst(),
split.GetSecond());
}
for (const struct tag_table *i = xiph_tags; i->name != nullptr; ++i)
if (vorbis_copy_comment(comment, i->name, i->type,
handler, handler_ctx))
return;
for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; ++i)
if (vorbis_copy_comment(comment,
tag_item_names[i], TagType(i),
handler, handler_ctx))
return;
}
void
vorbis_comments_scan(char **comments,
const TagHandler &handler, void *handler_ctx)
{
while (*comments)
vorbis_scan_comment(*comments++,
handler, handler_ctx);
}
std::unique_ptr<Tag>
vorbis_comments_to_tag(char **comments) noexcept
{
TagBuilder tag_builder;
vorbis_comments_scan(comments, add_tag_handler, &tag_builder);
return tag_builder.empty()
? nullptr
: tag_builder.CommitNew();
}
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