Method resolvePath

src/SFML/Network/Sftp.cpp:859–893

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Sftp::PathResult Sftp::resolvePath(const std::filesystem::path& path, const TimeoutWithPredicate& timeout)
{
    // Check if we already cached the result for the home path
    if ((path == ".") && !m_impl->cachedHomePath.empty())
        return {Result(Result::Value::Success), m_impl->cachedHomePath};

    const auto             pathString = pathToUtf8(path);
    std::array<char, 4096> buffer{};
    const auto             result = m_impl->waitForOperationComplete(
        [&]
        {
            return libssh2_sftp_symlink_ex(m_impl->sftpSession.get(),
                                           pathString.data(),
                                           static_cast<unsigned int>(pathString.size()),
                                           buffer.data(),
                                           static_cast<unsigned int>(buffer.size()),
                                           LIBSSH2_SFTP_REALPATH);
        },
        timeout);

    if (result == LIBSSH2_ERROR_EAGAIN)
        return {Result(Result::Value::Timeout), {}};

    if (result < 0)
        return {makeError(m_impl->ssh2Session.get(), m_impl->sftpSession.get()), {}};

    // The path from libssh2 is UTF-8 encoded, convert before constructing filesystem::path
    const auto resolvedPath = pathFromUtf8({buffer.data(), static_cast<std::size_t>(result)});

    // Cache the result for the home path
    if (path == ".")
        m_impl->cachedHomePath = resolvedPath;

    return {Result(Result::Value::Success), resolvedPath};
}


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