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#ifndef GITFS_GIT_H
#define GITFS_GIT_H
#include <memory>
#include <git2.h>
#include <ostream>
namespace GitFS::Git {
template<typename E>
[[noreturn]] void throwError(int err);
template<typename E, typename ... P, typename ... A>
void
gitSafe(int (*func)(P...), A ... p)
{
if (int _giterror = func(p...)) {
throwError<E>(_giterror);
}
}
template<typename T>
using TPtr = std::shared_ptr<T>;
template<typename E, typename R, typename ... P, typename ... A>
auto
gitSafeGet(int(*get)(R**, P...), void(*release)(R*), A ... p)
{
R * r = nullptr;
gitSafe<E>(get, &r, p...);
return TPtr<R>(r, release);
}
template<typename E, typename R, typename ... P, typename ... A>
auto
gitSafeGet(int(*get)(R**, P...), A ... p)
{
R * r = nullptr;
gitSafe<E>(get, &r, p...);
return r;
}
git_oid OidParse(const std::string_view & str);
using RepositoryPtr = decltype(gitSafeGet<std::exception>(
git_repository_open_bare, git_repository_free, nullptr));
RepositoryPtr RepositoryOpenBare(const std::string & path);
using BlobPtr = decltype(gitSafeGet<std::exception>(
git_blob_lookup, git_blob_free, nullptr, nullptr));
BlobPtr BlobLookup(const RepositoryPtr & repo, const git_oid & blob);
using CommitPtr = decltype(gitSafeGet<std::exception>(
git_commit_lookup, git_commit_free, nullptr, nullptr));
CommitPtr CommitLookup(const RepositoryPtr & repo, const git_oid & commitId);
using TreePtr = decltype(gitSafeGet<std::exception>(
git_tree_lookup, git_tree_free, nullptr, nullptr));
TreePtr TreeLookup(const RepositoryPtr & repo, const git_oid & treeId);
using TreeEntryPtr = decltype(gitSafeGet<std::exception>(
git_tree_entry_bypath, git_tree_entry_free, nullptr, nullptr));
TreeEntryPtr TreeEntryByPath(const TreePtr & tree, const std::string & path);
using RefPtr = decltype(gitSafeGet<std::exception>(
git_reference_dwim, git_reference_free, nullptr, nullptr));
RefPtr Commitish(const RepositoryPtr & repo, const std::string & name);
RefPtr Resolve(const RefPtr &);
}
namespace NetFS {
struct Attr;
Attr & operator<<(Attr &, const git_tree_entry &);
Attr & operator<<(Attr &, const git_commit &);
Attr & operator<<(Attr &, const git_blob &);
}
namespace std {
std::ostream & operator<<(std::ostream &, const git_oid &);
}
#endif
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