forked from lix-project/lix
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
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#include "fetchers.hh"
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#include "parse.hh"
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#include "store-api.hh"
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namespace nix::fetchers {
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std::unique_ptr<std::vector<std::unique_ptr<InputScheme>>> inputSchemes = nullptr;
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void registerInputScheme(std::unique_ptr<InputScheme> && inputScheme)
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{
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if (!inputSchemes) inputSchemes = std::make_unique<std::vector<std::unique_ptr<InputScheme>>>();
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inputSchemes->push_back(std::move(inputScheme));
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}
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std::unique_ptr<Input> inputFromURL(const ParsedURL & url)
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{
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for (auto & inputScheme : *inputSchemes) {
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auto res = inputScheme->inputFromURL(url);
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if (res) return res;
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}
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throw Error("input '%s' is unsupported", url.url);
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}
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std::unique_ptr<Input> inputFromURL(const std::string & url)
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{
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return inputFromURL(parseURL(url));
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}
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std::pair<Tree, std::shared_ptr<const Input>> Input::fetchTree(ref<Store> store) const
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{
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auto [tree, input] = fetchTreeInternal(store);
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if (tree.actualPath == "")
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tree.actualPath = store->toRealPath(store->printStorePath(tree.storePath));
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if (!tree.narHash)
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tree.narHash = store->queryPathInfo(tree.storePath)->narHash;
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if (input->narHash)
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assert(input->narHash == tree.narHash);
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return {std::move(tree), input};
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}
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std::shared_ptr<const Input> Input::applyOverrides(
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std::optional<std::string> ref,
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std::optional<Hash> rev) const
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{
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if (ref)
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throw Error("don't know how to apply '%s' to '%s'", *ref, to_string());
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if (rev)
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throw Error("don't know how to apply '%s' to '%s'", rev->to_string(Base16, false), to_string());
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return shared_from_this();
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}
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}
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