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reduce process_tags into a simpler function

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It had too many responsibilities.
This commit is contained in:
Frédéric Mangano-Tarumi 2018-12-03 18:22:33 -05:00
parent fcfb4a2a1d
commit 71c9dd7209
1 changed files with 20 additions and 30 deletions
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50
src/cli.cc
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@ -160,36 +160,20 @@ std::list<std::string> ot::read_comments(FILE* input)
return comments;
}
/**
* Parse the packet as an OpusTags comment header, apply the user's modifications, and write the new
* packet to the writer.
*/
static ot::status process_tags(const ogg_packet& packet, const ot::options& opt, ot::ogg_writer* writer)
/** Apply the modifications requested by the user to the opustags packet. */
static ot::status edit_tags(ot::opus_tags& tags, const ot::options& opt)
{
ot::opus_tags tags;
ot::status rc = ot::parse_tags(packet, tags);
if (rc != ot::st::ok)
return rc;
if (opt.delete_all) {
tags.comments.clear();
} else {
for (const std::string& name : opt.to_delete)
ot::delete_comments(tags, name.c_str());
}
if (opt.set_all)
tags.comments = ot::read_comments(stdin);
else if (opt.delete_all)
tags.comments.clear();
else for (const std::string& name : opt.to_delete)
ot::delete_comments(tags, name.c_str());
for (const std::string& comment : opt.to_add)
tags.comments.emplace_back(comment);
if (writer) {
auto packet = ot::render_tags(tags);
return writer->write_packet(packet);
} else {
ot::print_comments(tags.comments, stdout);
return ot::st::ok;
}
return ot::st::ok;
}
/**
@ -230,13 +214,19 @@ static ot::status process(ot::ogg_reader& reader, ot::ogg_writer* writer, const
if (rc != ot::st::ok)
return rc;
} else if (packet_count == 2) { // Comment header
rc = process_tags(reader.packet, opt, writer);
if (rc != ot::st::ok)
ot::opus_tags tags;
if ((rc = ot::parse_tags(reader.packet, tags)) != ot::st::ok)
return rc;
if (!writer)
return ot::st::ok; /* nothing else to do */
else
continue; /* process_tags wrote the new packet */
if ((rc = edit_tags(tags, opt)) != ot::st::ok)
return rc;
if (writer) {
auto packet = ot::render_tags(tags);
if ((rc = writer->write_packet(packet)) != ot::st::ok)
return rc;
continue;
} else {
ot::print_comments(tags.comments, stdout);
}
}
if (writer && (rc = writer->write_packet(reader.packet)) != ot::st::ok)
return rc;