forked from lix-project/lix
Clean up resolveSearchPathElem
We should use `std::optional<std::string>` not `std::pair<bool, std::string>` for an optional string.
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parent
8d871e1822
commit
87dcd09047
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@ -571,22 +571,22 @@ EvalState::EvalState(
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allowedPaths = PathSet();
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for (auto & i : searchPath) {
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auto r = resolveSearchPathElem(i);
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if (!r.first) continue;
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auto r = resolveSearchPathElem(i.path);
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if (!r) continue;
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auto path = r.second;
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auto path = *std::move(r);
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if (store->isInStore(r.second)) {
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if (store->isInStore(path)) {
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try {
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StorePathSet closure;
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store->computeFSClosure(store->toStorePath(r.second).first, closure);
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store->computeFSClosure(store->toStorePath(path).first, closure);
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for (auto & path : closure)
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allowPath(path);
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} catch (InvalidPath &) {
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allowPath(r.second);
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allowPath(path);
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}
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} else
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allowPath(r.second);
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allowPath(path);
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}
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}
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@ -317,7 +317,7 @@ private:
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SearchPath searchPath;
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std::map<std::string, std::pair<bool, std::string>> searchPathResolved;
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std::map<std::string, std::optional<std::string>> searchPathResolved;
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/**
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* Cache used by checkSourcePath().
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@ -434,9 +434,13 @@ public:
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SourcePath findFile(SearchPath & searchPath, const std::string_view path, const PosIdx pos = noPos);
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/**
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* Try to resolve a search path value (not the optinal key part)
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*
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* If the specified search path element is a URI, download it.
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*
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* If it is not found, return `std::nullopt`
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*/
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std::pair<bool, std::string> resolveSearchPathElem(const SearchPathElem & elem);
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std::optional<std::string> resolveSearchPathElem(const std::string & value);
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/**
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* Evaluate an expression to normal form
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@ -772,9 +772,9 @@ SourcePath EvalState::findFile(SearchPath & searchPath, const std::string_view p
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continue;
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suffix = path.size() == s ? "" : concatStrings("/", path.substr(s));
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}
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auto r = resolveSearchPathElem(i);
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if (!r.first) continue;
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Path res = r.second + suffix;
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auto r = resolveSearchPathElem(i.path);
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if (!r) continue;
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Path res = *r + suffix;
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if (pathExists(res)) return CanonPath(canonPath(res));
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}
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@ -791,49 +791,52 @@ SourcePath EvalState::findFile(SearchPath & searchPath, const std::string_view p
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}
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std::pair<bool, std::string> EvalState::resolveSearchPathElem(const SearchPathElem & elem)
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std::optional<std::string> EvalState::resolveSearchPathElem(const std::string & value)
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{
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auto i = searchPathResolved.find(elem.path);
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auto i = searchPathResolved.find(value);
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if (i != searchPathResolved.end()) return i->second;
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std::pair<bool, std::string> res;
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std::optional<std::string> res;
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if (EvalSettings::isPseudoUrl(elem.path)) {
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if (EvalSettings::isPseudoUrl(value)) {
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try {
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auto storePath = fetchers::downloadTarball(
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store, EvalSettings::resolvePseudoUrl(elem.path), "source", false).tree.storePath;
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res = { true, store->toRealPath(storePath) };
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store, EvalSettings::resolvePseudoUrl(value), "source", false).tree.storePath;
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res = { store->toRealPath(storePath) };
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} catch (FileTransferError & e) {
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logWarning({
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.msg = hintfmt("Nix search path entry '%1%' cannot be downloaded, ignoring", elem.path)
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.msg = hintfmt("Nix search path entry '%1%' cannot be downloaded, ignoring", value)
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});
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res = { false, "" };
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res = std::nullopt;
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}
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}
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else if (hasPrefix(elem.path, "flake:")) {
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else if (hasPrefix(value, "flake:")) {
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experimentalFeatureSettings.require(Xp::Flakes);
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auto flakeRef = parseFlakeRef(elem.path.substr(6), {}, true, false);
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debug("fetching flake search path element '%s''", elem.path);
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auto flakeRef = parseFlakeRef(value.substr(6), {}, true, false);
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debug("fetching flake search path element '%s''", value);
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auto storePath = flakeRef.resolve(store).fetchTree(store).first.storePath;
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res = { true, store->toRealPath(storePath) };
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res = { store->toRealPath(storePath) };
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}
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else {
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auto path = absPath(elem.path);
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auto path = absPath(value);
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if (pathExists(path))
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res = { true, path };
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res = { path };
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else {
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logWarning({
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.msg = hintfmt("Nix search path entry '%1%' does not exist, ignoring", elem.path)
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.msg = hintfmt("Nix search path entry '%1%' does not exist, ignoring", value)
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});
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res = { false, "" };
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res = std::nullopt;
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}
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}
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debug("resolved search path element '%s' to '%s'", elem.path, res.second);
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if (res)
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debug("resolved search path element '%s' to '%s'", value, *res);
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else
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debug("failed to resolve search path element '%s'", value);
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searchPathResolved[elem.path] = res;
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searchPathResolved[value] = res;
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return res;
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}
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