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