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https://github.com/privatevoid-net/nix-super.git
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e7ed9ae0c7
When calling `builtins.readFile` on a store path, the references of that path are currently added to the resulting string's context. This change makes those references the *possible* context of the string, but filters them to keep only the references whose hash actually appears in the string, similarly to what is done for determining the runtime references of a path.
71 lines
1.4 KiB
C++
71 lines
1.4 KiB
C++
#pragma once
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#include "hash.hh"
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#include "path.hh"
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namespace nix {
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std::pair<StorePathSet, HashResult> scanForReferences(const Path & path, const StorePathSet & refs);
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StorePathSet scanForReferences(Sink & toTee, const Path & path, const StorePathSet & refs);
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class RefScanSink : public Sink
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{
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StringSet hashes;
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StringSet seen;
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std::string tail;
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public:
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RefScanSink(StringSet && hashes) : hashes(hashes)
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{ }
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StringSet & getResult()
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{ return seen; }
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void operator () (std::string_view data) override;
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};
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class PathRefScanSink : public RefScanSink
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{
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std::map<std::string, StorePath> backMap;
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PathRefScanSink(StringSet && hashes, std::map<std::string, StorePath> && backMap);
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public:
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static PathRefScanSink fromPaths(const StorePathSet & refs);
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StorePathSet getResultPaths();
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};
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struct RewritingSink : Sink
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{
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std::string from, to, prev;
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Sink & nextSink;
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uint64_t pos = 0;
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std::vector<uint64_t> matches;
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RewritingSink(const std::string & from, const std::string & to, Sink & nextSink);
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void operator () (std::string_view data) override;
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void flush();
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};
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struct HashModuloSink : AbstractHashSink
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{
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HashSink hashSink;
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RewritingSink rewritingSink;
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HashModuloSink(HashType ht, const std::string & modulus);
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void operator () (std::string_view data) override;
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HashResult finish() override;
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};
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}
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