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/*
Minetest
Copyright (C) 2013-22 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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.
*/
#pragma once
#include "mods.h"
/**
* ModConfiguration is a subset of installed mods. This class
* is used to resolve dependencies and return a sorted list of mods.
*
* This class should not be extended from, but instead used as a
* component in other classes.
*/
class ModConfiguration
{
public:
/**
* @returns true if all dependencies are fullfilled.
*/
inline bool isConsistent() const { return m_unsatisfied_mods.empty(); }
inline const std::vector<ModSpec> &getUnsatisfiedMods() const
{
return m_unsatisfied_mods;
}
/**
* List of mods sorted such that they can be loaded in the
* given order with all dependencies being fulfilled.
*
* I.e: every mod in this list has only dependencies on mods which
* appear earlier in the vector.
*/
const std::vector<ModSpec> &getMods() const { return m_sorted_mods; }
void printUnsatisfiedModsError() const;
/**
* Adds all mods in the given path. used for games, modpacks
* and world-specific mods (worldmods-folders)
*
* @param path To search, should be absolute
* @param virtual_path Virtual path for this directory, see comment in ModSpec
*/
void addModsInPath(const std::string &path, const std::string &virtual_path);
/**
* Adds all mods in `new_mods`
*/
void addMods(const std::vector<ModSpec> &new_mods);
/**
* Adds game mods
*/
void addGameMods(const SubgameSpec &gamespec);
/**
* Adds mods specifed by a world.mt config
*
* @param settings_path Path to world.mt
* @param modPaths Map from virtual name to mod path
*/
void addModsFromConfig(const std::string &settings_path,
const std::unordered_map<std::string, std::string> &modPaths);
/**
* Call this function once all mods have been added
*/
void checkConflictsAndDeps();
private:
std::vector<ModSpec> m_sorted_mods;
/**
* move mods from m_unsatisfied_mods to m_sorted_mods
* in an order that satisfies dependencies
*/
void resolveDependencies();
// mods with unmet dependencies. Before dependencies are resolved,
// this is where all mods are stored. Afterwards this contains
// only the ones with really unsatisfied dependencies.
std::vector<ModSpec> m_unsatisfied_mods;
// set of mod names for which an unresolved name conflict
// exists. A name conflict happens when two or more mods
// at the same level have the same name but different paths.
// Levels (mods in higher levels override mods in lower levels):
// 1. game mod in modpack; 2. game mod;
// 3. world mod in modpack; 4. world mod;
// 5. addon mod in modpack; 6. addon mod.
std::unordered_set<std::string> m_name_conflicts;
};
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