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#pragma once
///@file
#include <string_view>
#include <string>
#include "types.hh" // IWYU pragma: keep
namespace nix {
struct Hash;
/**
* \ref StorePath "Store path" is the fundamental reference type of Nix.
* A store paths refers to a Store object.
*
* See glossary.html#gloss-store-path for more information on a
* conceptual level.
*/
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
constexpr static size_t MaxPathLen = 211;
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;
static StorePath random(std::string_view name);
};
typedef std::set<StorePath> StorePathSet;
typedef std::vector<StorePath> StorePaths;
/**
* The file extension of \ref Derivation derivations when serialized
* into store objects.
*/
const std::string drvExtension = ".drv";
}
namespace std {
template<> struct hash<nix::StorePath> {
std::size_t operator()(const nix::StorePath & path) const noexcept;
};
}
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