CheckpointFile.hpp

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// SPDX-License-Identifier: Apache-2.0

 
#pragma once
#include <filesystem>
#include <memory>
#include <string>
#include <cstdint>
#include <cstdio>
 
namespace openswmm::io {
struct CheckpointFile {
    std::filesystem::path path;
    uint64_t bytes = 0, fingerprint = 0;
    std::string encode() const;
    static CheckpointFile decode(std::string);
    void verify() const; // fixed 64 KiB read buffer
};
struct OwnedCheckpointFile {
    CheckpointFile file;
    bool owned = true;
    ~OwnedCheckpointFile();
    void retain() noexcept { owned = false; }
};


std::shared_ptr<OwnedCheckpointFile> copyCheckpointFile(const std::filesystem::path& source,
                                                        uint64_t bytes,
                                                        const std::filesystem::path& staging_base,
                                                        int source_descriptor = -1);
uint64_t checkpointFileSize(const std::filesystem::path& path);
void checkpointSeek(FILE* f, uint64_t offset);
}