57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
#include "remote-fs-accessor.hh"
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#include "nar-accessor.hh"
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namespace nix {
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RemoteFSAccessor::RemoteFSAccessor(ref<Store> store)
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: store(store)
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{
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}
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std::pair<ref<FSAccessor>, Path> RemoteFSAccessor::fetch(const Path & path_)
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{
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auto path = canonPath(path_);
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auto storePath = store->toStorePath(path);
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std::string restPath = std::string(path, storePath.size());
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if (!store->isValidPath(storePath))
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throw InvalidPath(format("path ‘%1%’ is not a valid store path") % storePath);
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auto i = nars.find(storePath);
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if (i != nars.end()) return {i->second, restPath};
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StringSink sink;
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store->narFromPath(storePath, sink);
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auto accessor = makeNarAccessor(sink.s);
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nars.emplace(storePath, accessor);
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return {accessor, restPath};
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}
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FSAccessor::Stat RemoteFSAccessor::stat(const Path & path)
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{
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auto res = fetch(path);
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return res.first->stat(res.second);
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}
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StringSet RemoteFSAccessor::readDirectory(const Path & path)
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{
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auto res = fetch(path);
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return res.first->readDirectory(res.second);
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}
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std::string RemoteFSAccessor::readFile(const Path & path)
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{
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auto res = fetch(path);
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return res.first->readFile(res.second);
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}
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std::string RemoteFSAccessor::readLink(const Path & path)
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{
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auto res = fetch(path);
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return res.first->readLink(res.second);
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}
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}
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