97 lines
3.2 KiB
C++
97 lines
3.2 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#include "katja/database.hpp"
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#include <filesystem>
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namespace katja
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{
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database_package database_package::create_database_package(const std::string& fullname)
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{
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std::string::const_reverse_iterator begin_iterator = std::crbegin(fullname);
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std::string::const_reverse_iterator end_iterator = begin_iterator;
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int minus_counter = 0;
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std::string build_tag;
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std::string architecture;
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std::string version;
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for (; begin_iterator != std::crend(fullname) && minus_counter < 3; ++begin_iterator)
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{
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if (*begin_iterator == '-')
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{
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if (minus_counter == 0)
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{
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build_tag = std::string(begin_iterator.base(), end_iterator.base());
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}
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else if (minus_counter == 1)
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{
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architecture = std::string(begin_iterator.base(), end_iterator.base());
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}
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else if (minus_counter == 2)
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{
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version = std::string(begin_iterator.base(), end_iterator.base());
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}
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end_iterator = begin_iterator + 1;
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++minus_counter;
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}
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}
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return database_package(std::string(fullname.cbegin(), end_iterator.base()),
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std::move(version), std::move(architecture), std::move(build_tag));
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}
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database_package::database_package(std::string&& name, std::string&& version,
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std::string&& architecture, std::string&& build_tag)
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: name(name), version(version), architecture(version), build_tag(build_tag)
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{
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}
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database_package::database_package(const std::string& fullname)
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: database_package(create_database_package(fullname))
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{
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}
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bool database_package::operator<(const database_package& that) const
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{
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return this->name < that.name;
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}
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bool database_package::operator>(const database_package& that) const
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{
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return this->name > that.name;
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}
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std::string database_package::to_string() const
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{
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std::string package_string;
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const std::size_t total_size = this->name.size() + this->version.size()
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+ this->architecture.size() + this->build_tag.size() + 3;
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package_string.reserve(total_size);
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package_string.append(this->name);
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package_string.push_back('-');
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package_string.append(this->version);
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package_string.push_back('-');
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package_string.append(this->architecture);
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package_string.push_back('-');
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package_string.append(this->build_tag);
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return package_string;
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}
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std::multimap<std::string, database_package> read_installed_database()
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{
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std::multimap<std::string, database_package> result;
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for (const auto& entry : std::filesystem::directory_iterator(katja::database))
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{
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database_package database_entry{ entry.path().filename() };
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result.emplace(database_entry.name, database_entry);
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}
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return result;
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}
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}
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