dash/src/fs.h

// Copyright (c) 2017 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#ifndef BITCOIN_FS_H
#define BITCOIN_FS_H

#include <stdio.h>
#include <string>

#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
#include <boost/filesystem/detail/utf8_codecvt_facet.hpp>

/** Filesystem operations and types */
namespace fs = boost::filesystem;

/** Bridge operations to C stdio */
namespace fsbridge {
    FILE *fopen(const fs::path& p, const char *mode);
    FILE *freopen(const fs::path& p, const char *mode, FILE *stream);

    class FileLock
    {
    public:
        FileLock() = delete;
        FileLock(const FileLock&) = delete;
        FileLock(FileLock&&) = delete;
        explicit FileLock(const fs::path& file);
        ~FileLock();
        bool TryLock();
        std::string GetReason() { return reason; }

    private:
        std::string reason;
#ifndef WIN32
        int fd = -1;
#else
        void* hFile = (void*)-1; // INVALID_HANDLE_VALUE
#endif
    };

    std::string get_filesystem_error_message(const fs::filesystem_error& e);
};

#endif // BITCOIN_FS_H