mirror of
https://github.com/NixOS/nix.git
synced 2025-11-21 01:39:36 +01:00
96 lines
3.1 KiB
C++
96 lines
3.1 KiB
C++
#include <nlohmann/json.hpp>
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#include "nix/store/store-dir-config.hh"
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#include "nix/util/json-utils.hh"
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namespace nix {
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void checkName(std::string_view name)
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{
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if (name.empty())
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throw BadStorePathName("name must not be empty");
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if (name.size() > StorePath::MaxPathLen)
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throw BadStorePathName("name '%s' must be no longer than %d characters", name, StorePath::MaxPathLen);
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// See nameRegexStr for the definition
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if (name[0] == '.') {
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// check against "." and "..", followed by end or dash
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if (name.size() == 1)
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throw BadStorePathName("name '%s' is not valid", name);
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if (name[1] == '-')
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throw BadStorePathName(
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"name '%s' is not valid: first dash-separated component must not be '%s'", name, ".");
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if (name[1] == '.') {
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if (name.size() == 2)
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throw BadStorePathName("name '%s' is not valid", name);
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if (name[2] == '-')
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throw BadStorePathName(
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"name '%s' is not valid: first dash-separated component must not be '%s'", name, "..");
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}
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}
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for (auto c : name)
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if (!((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '+' || c == '-'
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|| c == '.' || c == '_' || c == '?' || c == '='))
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throw BadStorePathName("name '%s' contains illegal character '%s'", name, c);
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}
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static void checkPathName(std::string_view path, std::string_view name)
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{
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try {
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checkName(name);
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} catch (BadStorePathName & e) {
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throw BadStorePath("path '%s' is not a valid store path: %s", path, Uncolored(e.message()));
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}
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}
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StorePath::StorePath(std::string_view _baseName)
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: baseName(_baseName)
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{
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if (baseName.size() < HashLen + 1)
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throw BadStorePath("'%s' is too short to be a valid store path", baseName);
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for (auto c : hashPart())
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if (c == 'e' || c == 'o' || c == 'u' || c == 't' || !((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z')))
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throw BadStorePath("store path '%s' contains illegal base-32 character '%s'", baseName, c);
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checkPathName(baseName, name());
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}
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StorePath::StorePath(const Hash & hash, std::string_view _name)
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: baseName((hash.to_string(HashFormat::Nix32, false) + "-").append(std::string(_name)))
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{
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checkPathName(baseName, name());
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}
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bool StorePath::isDerivation() const noexcept
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{
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return hasSuffix(name(), drvExtension);
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}
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void StorePath::requireDerivation() const
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{
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if (!isDerivation())
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throw FormatError("store path '%s' is not a valid derivation path", to_string());
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}
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StorePath StorePath::dummy("ffffffffffffffffffffffffffffffff-x");
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StorePath StorePath::random(std::string_view name)
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{
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return StorePath(Hash::random(HashAlgorithm::SHA1), name);
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}
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} // namespace nix
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namespace nlohmann {
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using namespace nix;
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StorePath adl_serializer<StorePath>::from_json(const json & json)
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{
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return StorePath{getString(json)};
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}
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void adl_serializer<StorePath>::to_json(json & json, const StorePath & storePath)
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{
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json = storePath.to_string();
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}
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} // namespace nlohmann
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