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#pragma once
#include "rust-ffi.hh"
namespace nix {
/* See path.rs. */
struct StorePath;
extern "C" {
void ffi_StorePath_drop(void *);
bool ffi_StorePath_less_than(const StorePath & a, const StorePath & b);
bool ffi_StorePath_eq(const StorePath & a, const StorePath & b);
unsigned char * ffi_StorePath_hash_data(const StorePath & p);
}
struct StorePath : rust::Value<3 * sizeof(void *) + 24, ffi_StorePath_drop>
{
static StorePath make(std::string_view path, std::string_view storeDir);
static StorePath make(unsigned char hash[20], std::string_view name);
static StorePath fromBaseName(std::string_view baseName);
rust::String to_string() const;
bool operator < (const StorePath & other) const
{
return ffi_StorePath_less_than(*this, other);
}
bool operator == (const StorePath & other) const
{
return ffi_StorePath_eq(*this, other);
}
bool operator != (const StorePath & other) const
{
return !(*this == other);
}
StorePath clone() const;
/* Check whether a file name ends with the extension for
derivations. */
bool isDerivation() const;
std::string_view name() const;
unsigned char * hashData() const
{
return ffi_StorePath_hash_data(*this);
}
};
typedef std::set<StorePath> StorePathSet;
typedef std::vector<StorePath> StorePaths;
StorePathSet cloneStorePathSet(const StorePathSet & paths);
StorePathSet storePathsToSet(const StorePaths & paths);
StorePathSet singleton(const StorePath & path);
/* Size of the hash part of store paths, in base-32 characters. */
const size_t storePathHashLen = 32; // i.e. 160 bits
/* 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.hashData();
}
};
}
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