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