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#pragma once
#include <string_view>
#include "types.hh"
namespace nix {
class Store;
struct Hash;
class StorePath
{
std::string baseName;
public:
/* Size of the hash part of store paths, in base-32 characters. */
constexpr static size_t HashLen = 32; // i.e. 160 bits
StorePath() = delete;
StorePath(std::string_view baseName);
StorePath(const Hash & hash, std::string_view name);
std::string_view to_string() const
{
return baseName;
}
bool operator < (const StorePath & other) const
{
return baseName < other.baseName;
}
bool operator == (const StorePath & other) const
{
return baseName == other.baseName;
}
bool operator != (const StorePath & other) const
{
return baseName != other.baseName;
}
/* Check whether a file name ends with the extension for
derivations. */
bool isDerivation() const;
std::string_view name() const
{
return std::string_view(baseName).substr(HashLen + 1);
}
std::string_view hashPart() const
{
return std::string_view(baseName).substr(0, HashLen);
}
static StorePath dummy;
};
typedef std::set<StorePath> StorePathSet;
typedef std::vector<StorePath> StorePaths;
typedef std::map<string, StorePath> OutputPathMap;
/* Extension of derivations in the Nix store. */
const std::string drvExtension = ".drv";
}
namespace std {
template<> struct hash<nix::StorePath> {
std::size_t operator()(const nix::StorePath & path) const noexcept
{
return * (std::size_t *) path.to_string().data();
}
};
}
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