forked from lix-project/lix
92 lines
2.2 KiB
C++
92 lines
2.2 KiB
C++
#include "lockfile.hh"
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#include "store-api.hh"
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#include <nlohmann/json.hpp>
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namespace nix::flake {
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LockedInput::LockedInput(const nlohmann::json & json)
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: LockedInputs(json)
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, ref(parseFlakeRef(json.value("url", json.value("uri", ""))))
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, originalRef(parseFlakeRef(json.value("originalUrl", json.value("originalUri", ""))))
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, narHash(Hash((std::string) json["narHash"]))
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{
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if (!ref.isImmutable())
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throw Error("lockfile contains mutable flakeref '%s'", ref);
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}
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nlohmann::json LockedInput::toJson() const
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{
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auto json = LockedInputs::toJson();
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json["url"] = ref.to_string();
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json["originalUrl"] = originalRef.to_string();
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json["narHash"] = narHash.to_string(SRI);
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return json;
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}
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Path LockedInput::computeStorePath(Store & store) const
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{
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return store.printStorePath(store.makeFixedOutputPath(true, narHash, "source"));
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}
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LockedInputs::LockedInputs(const nlohmann::json & json)
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{
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for (auto & i : json["inputs"].items())
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inputs.insert_or_assign(i.key(), LockedInput(i.value()));
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}
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nlohmann::json LockedInputs::toJson() const
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{
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nlohmann::json json;
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{
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auto j = nlohmann::json::object();
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for (auto & i : inputs)
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j[i.first] = i.second.toJson();
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json["inputs"] = std::move(j);
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}
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return json;
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}
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bool LockedInputs::isImmutable() const
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{
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for (auto & i : inputs)
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if (!i.second.ref.isImmutable() || !i.second.isImmutable()) return false;
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return true;
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}
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nlohmann::json LockFile::toJson() const
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{
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auto json = LockedInputs::toJson();
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json["version"] = 3;
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return json;
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}
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LockFile LockFile::read(const Path & path)
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{
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if (pathExists(path)) {
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auto json = nlohmann::json::parse(readFile(path));
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auto version = json.value("version", 0);
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if (version != 3)
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throw Error("lock file '%s' has unsupported version %d", path, version);
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return LockFile(json);
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} else
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return LockFile();
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}
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std::ostream & operator <<(std::ostream & stream, const LockFile & lockFile)
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{
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stream << lockFile.toJson().dump(4); // '4' = indentation in json file
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return stream;
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}
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void LockFile::write(const Path & path) const
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{
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createDirs(dirOf(path));
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writeFile(path, fmt("%s\n", *this));
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}
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}
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