lix/src/nix/realisation.cc
regnat 89013bdd7e Add a nix realisation command for working on realisations
Currently only has `nix realisation info`, more to come probably
2021-03-09 10:16:44 +01:00

79 lines
2.2 KiB
C++

#include "command.hh"
#include "common-args.hh"
#include <nlohmann/json.hpp>
using namespace nix;
struct CmdRealisation : virtual NixMultiCommand
{
CmdRealisation() : MultiCommand(RegisterCommand::getCommandsFor({"realisation"}))
{ }
std::string description() override
{
return "manipulate a Nix realisation";
}
Category category() override { return catUtility; }
void run() override
{
if (!command)
throw UsageError("'nix realisation' requires a sub-command.");
command->second->prepare();
command->second->run();
}
};
static auto rCmdRealisation = registerCommand<CmdRealisation>("realisation");
struct CmdRealisationInfo : RealisedPathsCommand, MixJSON
{
std::string description() override
{
return "query information about one or several realisations";
}
std::string doc() override
{
return
#include "realisation/info.md"
;
}
Category category() override { return catSecondary; }
void run(ref<Store> store, std::vector<RealisedPath> paths) override
{
settings.requireExperimentalFeature("ca-derivations");
if (json) {
nlohmann::json res = nlohmann::json::array();
for (auto & path : paths) {
nlohmann::json currentPath;
if (auto realisation = std::get_if<Realisation>(&path.raw))
currentPath = realisation->toJSON();
else
currentPath["opaquePath"] = store->printStorePath(path.path());
res.push_back(currentPath);
}
std::cout << res.dump();
}
else {
for (auto & path : paths) {
if (auto realisation = std::get_if<Realisation>(&path.raw)) {
std::cout <<
realisation->id.to_string() << " " <<
store->printStorePath(realisation->outPath);
} else
std::cout << store->printStorePath(path.path());
std::cout << std::endl;
}
}
}
};
static auto rCmdRealisationInfo = registerCommand2<CmdRealisationInfo>({"realisation", "info"});