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// Copyright 2019 Roman Perepelitsa.
//
// This file is part of GitStatus.
//
// GitStatus is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GitStatus is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with GitStatus. If not, see <https://www.gnu.org/licenses/>.
#ifndef ROMKATV_GITSTATUS_TAG_DB_H_
#define ROMKATV_GITSTATUS_TAG_DB_H_
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <git2.h>
#include <condition_variable>
#include <cstring>
#include <mutex>
#include <string>
#include <vector>
#include "arena.h"
namespace gitstatus {
struct Tag {
const char* name;
git_oid id;
};
class TagDb {
public:
explicit TagDb(git_repository* repo);
TagDb(TagDb&&) = delete;
~TagDb();
std::string TagForCommit(const git_oid& oid);
private:
void ReadLooseTags();
void UpdatePack();
void ParsePack();
void Wait();
bool IsLooseTag(const char* name) const;
bool TagHasTarget(const char* name, const git_oid* target) const;
git_repository* const repo_;
git_refdb* const refdb_;
Arena pack_arena_;
struct stat pack_stat_ = {};
WithArena<std::string> pack_;
WithArena<std::vector<const Tag*>> name2id_;
WithArena<std::vector<const Tag*>> id2name_;
Arena loose_arena_;
std::vector<char*> loose_tags_;
std::mutex mutex_;
std::condition_variable cv_;
bool id2name_dirty_ = false;
};
} // namespace gitstatus
#endif // ROMKATV_GITSTATUS_TAG_DB_H_
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