forked from lix-project/lix
59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
#include "downstream-placeholder.hh"
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#include "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(Base32, false);
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}
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DownstreamPlaceholder DownstreamPlaceholder::unknownCaOutput(
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const StorePath & drvPath,
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OutputNameView outputName,
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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 = "nix-upstream-output:" + std::string { drvPath.hashPart() } + ":" + outputPathName(drvName, outputName);
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return DownstreamPlaceholder {
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hashString(htSHA256, clearText)
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};
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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 = "nix-computed-output:"
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+ compressed.to_string(Base32, false)
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+ ":" + std::string { outputName };
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return DownstreamPlaceholder {
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hashString(htSHA256, clearText)
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};
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}
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DownstreamPlaceholder DownstreamPlaceholder::fromSingleDerivedPathBuilt(
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const SingleDerivedPath::Built & b,
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const ExperimentalFeatureSettings & xpSettings)
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{
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return std::visit(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),
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b.output,
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xpSettings);
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},
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}, b.drvPath->raw());
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}
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}
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