PatchesAuthors.h

// SPDX-License-Identifier: GPL-2.0-only

#pragma once

#include <filesystem>
#include <functional>
#include <map>
#include <optional>
#include <string>
#include <string_view>
#include <vector>

namespace SlGit {
class Commit;
class Repo;
}

namespace SlKernCVS {

class PatchesAuthors {
public:
    using InsertUser = std::function<bool (const std::string &email)>;
    using InsertUFMap = std::function<bool (const std::string &email,
                        std::filesystem::path &&file,
                        unsigned fixes, unsigned realFixes)>;

    PatchesAuthors(const SlGit::Repo &repo, bool dumpRefs, bool reportUnhandled) :
        repo(&repo), dumpRefs(dumpRefs), reportUnhandled(reportUnhandled)
    {}

    bool processAuthors(const SlGit::Commit &commit, const InsertUser &insertUser,
                const InsertUFMap &insertUFMap);
private:
    struct Counts {
        unsigned fixes = 0;
        unsigned realFixes = 0;
    };
    using Map = std::map<std::string, std::map<std::string, Counts>>;
    using RefMap = std::map<std::string, std::map<std::string, unsigned int>>;

    PatchesAuthors() : repo(nullptr), dumpRefs(false), reportUnhandled(false) {}
    friend void testProcessPatch();

    static constexpr std::string_view parseEmail(std::string_view line, std::size_t atSignPos);
    static constexpr std::optional<std::string_view> isInterestingLine(std::string_view line);
    static constexpr bool isGitFixes(std::string_view line);
    static constexpr bool isReallyEmail(std::string_view line);
    static constexpr bool isValidRef(std::string_view ref);
    void storeParens(const char *&parenStart, std::string_view ref,
             const std::vector<std::string> &patchEmails);
    bool consumeParens(std::string_view ref, const char *&parenStart,
               const std::vector<std::string> &patchEmails);

    int processPatch(const std::filesystem::path &file, const std::string &content);

    const SlGit::Repo *repo;
    const bool dumpRefs;
    const bool reportUnhandled;
    Map m_emailFileCountMap;
    RefMap m_emailRefCountMap;
};

}