lix/src/nix/describe-stores.cc
Eelco Dolstra 85c8be6286 Remove static variable name clashes
This was useful for an experiment with building Nix as a single
compilation unit. It's not very useful otherwise but also doesn't
hurt...
2020-10-06 13:49:20 +02:00

45 lines
1.5 KiB
C++

#include "command.hh"
#include "common-args.hh"
#include "shared.hh"
#include "store-api.hh"
#include <nlohmann/json.hpp>
using namespace nix;
struct CmdDescribeStores : Command, MixJSON
{
std::string description() override
{
return "show registered store types and their available options";
}
Category category() override { return catUtility; }
void run() override
{
auto res = nlohmann::json::object();
for (auto & implem : *Implementations::registered) {
auto storeConfig = implem.getConfig();
auto storeName = storeConfig->name();
res[storeName] = storeConfig->toJSON();
}
if (json) {
std::cout << res;
} else {
for (auto & [storeName, storeConfig] : res.items()) {
std::cout << "## " << storeName << std::endl << std::endl;
for (auto & [optionName, optionDesc] : storeConfig.items()) {
std::cout << "### " << optionName << std::endl << std::endl;
std::cout << optionDesc["description"].get<std::string>() << std::endl;
std::cout << "default: " << optionDesc["defaultValue"] << std::endl <<std::endl;
if (!optionDesc["aliases"].empty())
std::cout << "aliases: " << optionDesc["aliases"] << std::endl << std::endl;
}
}
}
}
};
static auto rDescribeStore = registerCommand<CmdDescribeStores>("describe-stores");