30 lines
773 B
C++
30 lines
773 B
C++
#include "build.hh"
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Derivation derivationFromPath(const Path & drvPath)
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{
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assertStorePath(drvPath);
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ensurePath(drvPath);
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ATerm t = ATreadFromNamedFile(drvPath.c_str());
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if (!t) throw Error(format("cannot read aterm from `%1%'") % drvPath);
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return parseDerivation(t);
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}
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void computeFSClosure(const Path & storePath,
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PathSet & paths, bool flipDirection)
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{
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if (paths.find(storePath) != paths.end()) return;
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paths.insert(storePath);
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PathSet references;
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if (flipDirection)
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queryReferers(noTxn, storePath, references);
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else
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queryReferences(noTxn, storePath, references);
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for (PathSet::iterator i = references.begin();
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i != references.end(); ++i)
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computeFSClosure(*i, paths, flipDirection);
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}
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