third_party/nix/src/nix/add-to-store.cc


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

#include "libmain/common-args.hh"
#include "libstore/store-api.hh"
#include "libutil/archive.hh"
#include "nix/command.hh"

using namespace nix;

struct CmdAddToStore final : MixDryRun, StoreCommand {
  Path path;
  std::optional<std::string> namePart;

  CmdAddToStore() {
    expectArg("path", &path);

    mkFlag()
        .longName("name")
        .shortName('n')
        .description("name component of the store path")
        .labels({"name"})
        .dest(&namePart);
  }

  std::string name() override { return "add-to-store"; }

  std::string description() override { return "add a path to the Nix store"; }

  Examples examples() override { return {}; }

  void run(ref<Store> store) override {
    if (!namePart) {
      namePart = baseNameOf(path);
    }

    StringSink sink;
    dumpPath(path, sink);

    ValidPathInfo info;
    info.narHash = hashString(htSHA256, *sink.s);
    info.narSize = sink.s->size();
    info.path = store->makeFixedOutputPath(true, info.narHash, *namePart);
    info.ca = makeFixedOutputCA(true, info.narHash);

    if (!dryRun) {
      store->addToStore(info, sink.s);
    }

    std::cout << fmt("%s\n", info.path);
  }
};

static RegisterCommand r1(make_ref<CmdAddToStore>());