mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-09-20 08:05:44 +00:00
89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
/*
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* Copyright (C) 2023 Kyle Reed
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "metadata_file.hpp"
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#include "convert.hpp"
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#include "file_reader.hpp"
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#include "string_format.hpp"
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#include <string_view>
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namespace fs = std::filesystem;
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using namespace std::literals;
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const std::string_view center_freq_name = "center_frequency"sv;
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const std::string_view sample_rate_name = "sample_rate"sv;
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fs::path get_metadata_path(const fs::path& capture_path) {
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auto temp = capture_path;
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return temp.replace_extension(u".TXT");
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}
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Optional<File::Error> write_metadata_file(const fs::path& path, capture_metadata metadata) {
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File f;
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auto error = f.create(path);
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if (error)
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return error;
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error = f.write_line(std::string{center_freq_name} + "=" +
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to_string_dec_uint(metadata.center_frequency));
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if (error)
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return error;
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error = f.write_line(std::string{sample_rate_name} + "=" +
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to_string_dec_uint(metadata.sample_rate));
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if (error)
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return error;
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return {};
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}
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Optional<capture_metadata> read_metadata_file(const fs::path& path) {
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File f;
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auto error = f.open(path);
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if (error)
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return {};
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capture_metadata metadata{};
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auto reader = FileLineReader(f);
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for (const auto& line : reader) {
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auto cols = split_string(line, '=');
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if (cols.size() != 2)
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continue; // Bad line.
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if (cols[0] == center_freq_name)
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parse_int(cols[1], metadata.center_frequency);
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else if (cols[0] == sample_rate_name)
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parse_int(cols[1], metadata.sample_rate);
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else
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continue;
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}
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if (metadata.center_frequency == 0 || metadata.sample_rate == 0)
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return {}; // Parse failed.
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return metadata;
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}
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