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/*
Minetest
Copyright (C) 2011 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.
*/
#include "mods.h"
#include "filesys.h"
#include "strfnd.h"
#include "log.h"
#include "subgame.h"
#include "settings.h"
std::map<std::string, ModSpec> getModsInPath(std::string path)
{
std::map<std::string, ModSpec> result;
std::vector<fs::DirListNode> dirlist = fs::GetDirListing(path);
for(u32 j=0; j<dirlist.size(); j++){
if(!dirlist[j].dir)
continue;
std::string modname = dirlist[j].name;
// Ignore all directories beginning with a ".", especially
// VCS directories like ".git" or ".svn"
if(modname[0] == '.')
continue;
std::string modpath = path + DIR_DELIM + modname;
// Handle modpacks (defined by containing modpack.txt)
std::ifstream modpack_is((modpath+DIR_DELIM+"modpack.txt").c_str(),
std::ios_base::binary);
if(modpack_is.good()) //a modpack, recursively get the mods in it
{
modpack_is.close(); // We don't actually need the file
ModSpec spec(modname,modpath);
spec.modpack_content = getModsInPath(modpath);
spec.is_modpack = true;
result.insert(std::make_pair(modname,spec));
}
else // not a modpack, add the modspec
{
std::set<std::string> depends;
std::ifstream is((modpath+DIR_DELIM+"depends.txt").c_str(),
std::ios_base::binary);
while(is.good())
{
std::string dep;
std::getline(is, dep);
dep = trim(dep);
if(dep != "")
depends.insert(dep);
}
ModSpec spec(modname, modpath, depends);
result.insert(std::make_pair(modname,spec));
}
}
return result;
}
std::map<std::string, ModSpec> flattenModTree(std::map<std::string, ModSpec> mods)
{
std::map<std::string, ModSpec> result;
for(std::map<std::string,ModSpec>::iterator it = mods.begin();
it != mods.end(); ++it)
{
ModSpec mod = (*it).second;
if(mod.is_modpack)
{
std::map<std::string, ModSpec> content =
flattenModTree(mod.modpack_content);
result.insert(content.begin(),content.end());
result.insert(std::make_pair(mod.name,mod));
}
else //not a modpack
{
result.insert(std::make_pair(mod.name,mod));
}
}
return result;
}
std::vector<ModSpec> flattenMods(std::map<std::string, ModSpec> mods)
{
std::vector<ModSpec> result;
for(std::map<std::string,ModSpec>::iterator it = mods.begin();
it != mods.end(); ++it)
{
ModSpec mod = (*it).second;
if(mod.is_modpack)
{
std::vector<ModSpec> content = flattenMods(mod.modpack_content);
result.reserve(result.size() + content.size());
result.insert(result.end(),content.begin(),content.end());
}
else //not a modpack
{
// infostream << "inserting mod " << mod.name << std::endl;
result.push_back(mod);
}
}
return result;
}
std::vector<ModSpec> filterMods(std::vector<ModSpec> mods,
std::set<std::string> exclude_mod_names)
{
std::vector<ModSpec> result;
for(std::vector<ModSpec>::iterator it = mods.begin();
it != mods.end(); ++it)
{
ModSpec& mod = *it;
if(exclude_mod_names.count(mod.name) == 0)
result.push_back(mod);
}
return result;
}
void ModConfiguration::addModsInPathFiltered(std::string path, std::set<std::string> exclude_mods)
{
addMods(filterMods(flattenMods(getModsInPath(path)),exclude_mods));
}
void ModConfiguration::addMods(std::vector<ModSpec> new_mods)
{
// Step 1: remove mods in sorted_mods from unmet dependencies
// of new_mods. new mods without unmet dependencies are
// temporarily stored in satisfied_mods
std::vector<ModSpec> satisfied_mods;
for(std::vector<ModSpec>::iterator it = m_sorted_mods.begin();
it != m_sorted_mods.end(); ++it)
{
ModSpec mod = *it;
for(std::vector<ModSpec>::iterator it_new = new_mods.begin();
it_new != new_mods.end(); ++it_new)
{
ModSpec& mod_new = *it_new;
//infostream << "erasing dependency " << mod.name << " from " << mod_new.name << std::endl;
mod_new.unsatisfied_depends.erase(mod.name);
}
}
// split new mods into satisfied and unsatisfied
for(std::vector<ModSpec>::iterator it = new_mods.begin();
it != new_mods.end(); ++it)
{
ModSpec mod_new = *it;
if(mod_new.unsatisfied_depends.empty())
satisfied_mods.push_back(mod_new);
else
m_unsatisfied_mods.push_back(mod_new);
}
// Step 2: mods without unmet dependencies can be appended to
// the sorted list.
while(!satisfied_mods.empty())
{
ModSpec mod = satisfied_mods.back();
m_sorted_mods.push_back(mod);
satisfied_mods.pop_back();
for(std::list<ModSpec>::iterator it = m_unsatisfied_mods.begin();
it != m_unsatisfied_mods.end(); )
{
ModSpec& mod2 = *it;
mod2.unsatisfied_depends.erase(mod.name);
if(mod2.unsatisfied_depends.empty())
{
satisfied_mods.push_back(mod2);
it = m_unsatisfied_mods.erase(it);
}
else
++it;
}
}
}
ModConfiguration::ModConfiguration(std::string worldpath)
{
// Add all world mods and all game mods
addModsInPath(worldpath + DIR_DELIM + "worldmods");
SubgameSpec gamespec = findWorldSubgame(worldpath);
addModsInPath(gamespec.gamemods_path);
// check world.mt file for mods explicitely declared to be
// loaded or not by a load_mod_<modname> = ... line.
std::string worldmt = worldpath+DIR_DELIM+"world.mt";
Settings worldmt_settings;
worldmt_settings.readConfigFile(worldmt.c_str());
std::vector<std::string> names = worldmt_settings.getNames();
std::set<std::string> exclude_mod_names;
for(std::vector<std::string>::iterator it = names.begin();
it != names.end(); ++it)
{
std::string name = *it;
// for backwards compatibility: exclude only mods which are
// explicitely excluded. if mod is not mentioned at all, it is
// enabled. So by default, all installed mods are enabled.
if (name.compare(0,9,"load_mod_") == 0 &&
!worldmt_settings.getBool(name))
{
exclude_mod_names.insert(name.substr(9));
}
}
for(std::set<std::string>::const_iterator i = gamespec.addon_mods_paths.begin();
i != gamespec.addon_mods_paths.end(); ++i)
addModsInPathFiltered((*i),exclude_mod_names);
}
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