File io.h

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// Copyright (c) SandboxAQ. All rights reserved.
// SPDX-License-Identifier: AGPL-3.0-only


#pragma once

#include <sys/types.h>

#include "sandwich_c/export.h"
#include "sandwich_c/ioerrors.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef size_t(SandwichIOReadFunction)(void *uarg, void *buf, size_t count,
                                       enum SandwichIOError *err);
typedef SandwichIOReadFunction *SandwichIOReadFunctionPtr;

typedef size_t(SandwichIOWriteFunction)(void *uarg, const void *buf,
                                        size_t count,
                                        enum SandwichIOError *err);
typedef SandwichIOWriteFunction *SandwichIOWriteFunctionPtr;

typedef enum SandwichIOError(SandwichIOFlushFunction)(void *uarg);
typedef SandwichIOFlushFunction *SandwichIOFlushFunctionPtr;

struct SandwichIO {
  SandwichIOReadFunctionPtr read;

  SandwichIOWriteFunctionPtr write;

  SandwichIOFlushFunctionPtr flush;

  void *uarg;
};

typedef void(SandwichOwnedIOFreeFunction)(struct SandwichIO *io);
typedef SandwichOwnedIOFreeFunction *SandwichOwnedIOFreeFunctionPtr;

struct SandwichIOOwned {
  struct SandwichIO *io;

  SandwichOwnedIOFreeFunctionPtr freeptr;
};

SANDWICH_API enum SandwichIOError
sandwich_io_client_tcp_new(const char *hostname, uint16_t port, bool async,
                           struct SandwichIOOwned **ownedIO);

SANDWICH_API enum SandwichIOError
sandwich_io_socket_wrap_new(int fd, struct SandwichIOOwned **ownedIO);

SANDWICH_API void sandwich_io_owned_free(struct SandwichIOOwned *ownedIO);

#ifdef __cplusplus
} // end extern "C"
#endif