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https://github.com/NixOS/nix.git
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e4f62e4608
* It is tough to contribute to a project that doesn't use a formatter, * It is extra hard to contribute to a project which has configured the formatter, but ignores it for some files * Code formatting makes it harder to hide obscure / weird bugs by accident or on purpose, Let's rip the bandaid off? Note that PRs currently in flight should be able to be merged relatively easily by applying `clang-format` to their tip prior to merge.
50 lines
1.9 KiB
C++
50 lines
1.9 KiB
C++
#include "nix/store/downstream-placeholder.hh"
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#include "nix/store/derivations.hh"
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namespace nix {
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std::string DownstreamPlaceholder::render() const
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{
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return "/" + hash.to_string(HashFormat::Nix32, false);
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}
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DownstreamPlaceholder DownstreamPlaceholder::unknownCaOutput(
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const StorePath & drvPath, OutputNameView outputName, const ExperimentalFeatureSettings & xpSettings)
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{
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xpSettings.require(Xp::CaDerivations);
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auto drvNameWithExtension = drvPath.name();
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auto drvName = drvNameWithExtension.substr(0, drvNameWithExtension.size() - 4);
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auto clearText =
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"nix-upstream-output:" + std::string{drvPath.hashPart()} + ":" + outputPathName(drvName, outputName);
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return DownstreamPlaceholder{hashString(HashAlgorithm::SHA256, clearText)};
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}
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DownstreamPlaceholder DownstreamPlaceholder::unknownDerivation(
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const DownstreamPlaceholder & placeholder,
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OutputNameView outputName,
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const ExperimentalFeatureSettings & xpSettings)
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{
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xpSettings.require(Xp::DynamicDerivations);
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auto compressed = compressHash(placeholder.hash, 20);
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auto clearText =
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"nix-computed-output:" + compressed.to_string(HashFormat::Nix32, false) + ":" + std::string{outputName};
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return DownstreamPlaceholder{hashString(HashAlgorithm::SHA256, clearText)};
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}
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DownstreamPlaceholder DownstreamPlaceholder::fromSingleDerivedPathBuilt(
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const SingleDerivedPath::Built & b, const ExperimentalFeatureSettings & xpSettings)
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{
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return std::visit(
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overloaded{
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[&](const SingleDerivedPath::Opaque & o) {
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return DownstreamPlaceholder::unknownCaOutput(o.path, b.output, xpSettings);
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},
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[&](const SingleDerivedPath::Built & b2) {
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return DownstreamPlaceholder::unknownDerivation(
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DownstreamPlaceholder::fromSingleDerivedPathBuilt(b2, xpSettings), b.output, xpSettings);
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},
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},
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b.drvPath->raw());
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}
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} // namespace nix
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