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Split GitInputScheme::getAccessor() more

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This commit is contained in:
Eelco Dolstra 2023-01-20 12:55:14 +01:00
parent fa5af1e583
commit 9286b1aeda
1 changed files with 37 additions and 28 deletions
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65
src/libfetchers/git.cc
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@ -483,10 +483,21 @@ struct GitInputScheme : InputScheme
return *head; return *head;
} }
StorePath fetchToStore( static MakeNotAllowedError makeNotAllowedError(std::string url)
{
return [url{std::move(url)}](const CanonPath & path) -> RestrictedPathError
{
if (nix::pathExists(path.abs()))
return RestrictedPathError("access to path '%s' is forbidden because it is not under Git control; maybe you should 'git add' it to the repository '%s'?", path, url);
else
return RestrictedPathError("path '%s' does not exist in Git repository '%s'", path, url);
};
}
std::pair<ref<InputAccessor>, Input> getAccessorFromCommit(
ref<Store> store, ref<Store> store,
RepoInfo & repoInfo, RepoInfo & repoInfo,
Input & input) const Input && input) const
{ {
assert(!repoInfo.isDirty); assert(!repoInfo.isDirty);
@ -503,7 +514,7 @@ struct GitInputScheme : InputScheme
}); });
}; };
auto makeResult = [&](const Attrs & infoAttrs, const StorePath & storePath) -> StorePath auto makeResult = [&](const Attrs & infoAttrs, const StorePath & storePath) -> std::pair<ref<InputAccessor>, Input>
{ {
assert(input.getRev()); assert(input.getRev());
assert(!origRev || origRev == input.getRev()); assert(!origRev || origRev == input.getRev());
@ -516,7 +527,9 @@ struct GitInputScheme : InputScheme
auto narHash = store->queryPathInfo(storePath)->narHash; auto narHash = store->queryPathInfo(storePath)->narHash;
input.attrs.insert_or_assign("narHash", narHash.to_string(SRI, true)); input.attrs.insert_or_assign("narHash", narHash.to_string(SRI, true));
return storePath; auto accessor = makeStorePathAccessor(store, storePath, makeNotAllowedError(repoInfo.url));
accessor->setPathDisplay("«" + input.to_string() + "»");
return {accessor, std::move(input)};
}; };
if (input.getRev()) { if (input.getRev()) {
@ -733,30 +746,10 @@ struct GitInputScheme : InputScheme
return makeResult(infoAttrs, std::move(storePath)); return makeResult(infoAttrs, std::move(storePath));
} }
std::pair<ref<InputAccessor>, Input> getAccessor(ref<Store> store, const Input & _input) const override std::pair<ref<InputAccessor>, Input> getAccessorFromCheckout(
RepoInfo & repoInfo,
Input && input) const
{ {
Input input(_input);
auto repoInfo = getRepoInfo(input);
auto makeNotAllowedError = [url{repoInfo.url}](const CanonPath & path) -> RestrictedPathError
{
if (nix::pathExists(path.abs()))
return RestrictedPathError("access to path '%s' is forbidden because it is not under Git control; maybe you should 'git add' it to the repository '%s'?", path, url);
else
return RestrictedPathError("path '%s' does not exist in Git repository '%s'", path, url);
};
/* Unless we're using the working tree, copy the tree into the
Nix store. TODO: We could have an accessor for fetching
files from the Git repository directly. */
if (input.getRef() || input.getRev() || !repoInfo.isLocal) {
auto storePath = fetchToStore(store, repoInfo, input);
auto accessor = makeStorePathAccessor(store, storePath, std::move(makeNotAllowedError));
accessor->setPathDisplay("«" + input.to_string() + "»");
return {accessor, input};
}
if (!repoInfo.isDirty) { if (!repoInfo.isDirty) {
auto ref = getDefaultRef(repoInfo); auto ref = getDefaultRef(repoInfo);
input.attrs.insert_or_assign("ref", ref); input.attrs.insert_or_assign("ref", ref);
@ -780,7 +773,23 @@ struct GitInputScheme : InputScheme
getLastModified(repoInfo, repoInfo.url, "HEAD")); getLastModified(repoInfo, repoInfo.url, "HEAD"));
} }
return {makeFSInputAccessor(CanonPath(repoInfo.url), listFiles(repoInfo), std::move(makeNotAllowedError)), input}; return {
makeFSInputAccessor(CanonPath(repoInfo.url), listFiles(repoInfo), makeNotAllowedError(repoInfo.url)),
std::move(input)
};
}
std::pair<ref<InputAccessor>, Input> getAccessor(ref<Store> store, const Input & _input) const override
{
Input input(_input);
auto repoInfo = getRepoInfo(input);
if (input.getRef() || input.getRev() || !repoInfo.isLocal)
return getAccessorFromCommit(store, repoInfo, std::move(input));
else
return getAccessorFromCheckout(repoInfo, std::move(input));
} }
bool isLocked(const Input & input) const override bool isLocked(const Input & input) const override