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Input: Replace markFileChanged() by putFile()

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Committing a lock file using markFileChanged() required the input to
be writable by the caller in the local filesystem (using the path
returned by getSourcePath()). putFile() abstracts over this.
This commit is contained in:
Eelco Dolstra 2023-10-25 18:18:15 +02:00
parent 5ac87a75dd
commit 95d657c8b3
8 changed files with 109 additions and 59 deletions
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20
src/libfetchers/path.cc
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@ -66,14 +66,28 @@ struct PathInputScheme : InputScheme
};
}
std::optional<Path> getSourcePath(const Input & input) override
std::optional<Path> getSourcePath(const Input & input) const override
{
return getStrAttr(input.attrs, "path");
}
void markChangedFile(const Input & input, std::string_view file, std::optional<std::string> commitMsg) override
void putFile(
const Input & input,
const CanonPath & path,
std::string_view contents,
std::optional<std::string> commitMsg) const override
{
// nothing to do
writeFile((CanonPath(getAbsPath(input)) + path).abs(), contents);
}
CanonPath getAbsPath(const Input & input) const
{
auto path = getStrAttr(input.attrs, "path");
if (path[0] == '/')
return CanonPath(path);
throw Error("cannot fetch input '%s' because it uses a relative path", input.to_string());
}
std::pair<StorePath, Input> fetch(ref<Store> store, const Input & _input) override