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#pragma once
///@file
#include "hash.hh"
#include "path.hh"
namespace nix {
std::pair<StorePathSet, HashResult> scanForReferences(const Path & path, const StorePathSet & refs);
StorePathSet scanForReferences(Sink & toTee, const Path & path, const StorePathSet & refs);
class RefScanSink : public Sink
{
StringSet hashes;
StringSet seen;
std::string tail;
public:
RefScanSink(StringSet && hashes) : hashes(hashes)
{ }
StringSet & getResult()
{ return seen; }
void operator () (std::string_view data) override;
};
class PathRefScanSink : public RefScanSink
{
std::map<std::string, StorePath> backMap;
PathRefScanSink(StringSet && hashes, std::map<std::string, StorePath> && backMap);
public:
static PathRefScanSink fromPaths(const StorePathSet & refs);
StorePathSet getResultPaths();
};
struct RewritingSink : Sink
{
std::string from, to, prev;
Sink & nextSink;
uint64_t pos = 0;
std::vector<uint64_t> matches;
RewritingSink(const std::string & from, const std::string & to, Sink & nextSink);
void operator () (std::string_view data) override;
void flush();
};
struct HashModuloSink : AbstractHashSink
{
HashSink hashSink;
RewritingSink rewritingSink;
HashModuloSink(HashType ht, const std::string & modulus);
void operator () (std::string_view data) override;
HashResult finish() override;
};
}
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