79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
#include "fs-input-accessor.hh"
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#include "posix-source-accessor.hh"
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#include "store-api.hh"
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namespace nix {
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struct FSInputAccessor : InputAccessor, PosixSourceAccessor
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{
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CanonPath root;
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FSInputAccessor(const CanonPath & root)
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: root(root)
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{
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displayPrefix = root.isRoot() ? "" : root.abs();
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}
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void readFile(
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const CanonPath & path,
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Sink & sink,
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std::function<void(uint64_t)> sizeCallback) override
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{
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auto absPath = makeAbsPath(path);
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PosixSourceAccessor::readFile(absPath, sink, sizeCallback);
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}
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bool pathExists(const CanonPath & path) override
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{
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return PosixSourceAccessor::pathExists(makeAbsPath(path));
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}
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std::optional<Stat> maybeLstat(const CanonPath & path) override
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{
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return PosixSourceAccessor::maybeLstat(makeAbsPath(path));
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}
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DirEntries readDirectory(const CanonPath & path) override
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{
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DirEntries res;
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for (auto & entry : PosixSourceAccessor::readDirectory(makeAbsPath(path)))
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res.emplace(entry);
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return res;
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}
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std::string readLink(const CanonPath & path) override
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{
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return PosixSourceAccessor::readLink(makeAbsPath(path));
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}
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CanonPath makeAbsPath(const CanonPath & path)
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{
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return root / path;
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}
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std::optional<CanonPath> getPhysicalPath(const CanonPath & path) override
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{
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return makeAbsPath(path);
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}
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};
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ref<InputAccessor> makeFSInputAccessor(const CanonPath & root)
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{
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return make_ref<FSInputAccessor>(root);
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}
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ref<InputAccessor> makeStorePathAccessor(
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ref<Store> store,
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const StorePath & storePath)
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{
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return makeFSInputAccessor(CanonPath(store->toRealPath(storePath)));
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}
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SourcePath getUnfilteredRootPath(CanonPath path)
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{
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static auto rootFS = makeFSInputAccessor(CanonPath::root);
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return {rootFS, path};
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}
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}
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