~drizzle-trunk/drizzle/development

/*

 * Drizzle Client & Protocol Library

 *

 * Copyright (C) 2008 Eric Day (eday@oddments.org)

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 * notice, this list of conditions and the following disclaimer.

 *

 *     * Redistributions in binary form must reproduce the above

 * copyright notice, this list of conditions and the following disclaimer

 * in the documentation and/or other materials provided with the

 * distribution.

 *

 *     * The names of its contributors may not be used to endorse or

 * promote products derived from this software without specific prior

 * written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 */

#pragma once

/**

 * @file

 * @brief Drizzle Declarations

 */

#include <inttypes.h>

#include <sys/types.h>

#ifdef _WIN32

# define WIN32_LEAN_AND_MEAN

# include <Windows.h>

# include <winsock2.h>

# include <ws2tcpip.h>

# include <io.h>

# undef close

# define close _close

typedef unsigned int in_port_t;

typedef long ssize_t;

# define snprintf _snprintf

# define inline __inline

struct sockaddr_un

{

  short int sun_family;

  char sun_path[108];

};

# define poll WSAPoll

//# define pollfd WSAPOLLFD

#if defined(__GNUC__)

# include <stdbool.h>

#else

# if !defined(__cplusplus)

typedef enum { false = 0, true = 1 } _Bool;

typedef _Bool bool;

#endif 

#endif

#else

# if !defined(__cplusplus)

#  include <stdbool.h>

# endif

# include <sys/socket.h>

# include <netinet/in.h>

# include <arpa/inet.h>

# include <sys/un.h>

# include <netdb.h>

# include <poll.h>

#endif

#include <assert.h>

#include <errno.h>

#include <libdrizzle-2.0/visibility.h>

#include <libdrizzle-2.0/constants.h>

#include <libdrizzle-2.0/structs.h>

#include <libdrizzle-2.0/conn.h>

#include <libdrizzle-2.0/result.h>

#include <libdrizzle-2.0/column.h>

#ifdef  __cplusplus

extern "C" {

#endif

/**

 * @addtogroup drizzle Drizzle Declarations

 * @ingroup drizzle_client_interface

 * @ingroup drizzle_server_interface

 *

 * This is the core library structure that other structures (such as

 * connections) are created from.

 *

 * There is no locking within a single drizzle_st structure, so for threaded

 * applications you must either ensure isolation in the application or use

 * multiple drizzle_st structures (for example, one for each thread).

 * @{

 */

/**

 * Get library version string.

 *

 * @return Pointer to static buffer in library that holds the version string.

 */

DRIZZLE_API

const char *drizzle_version(void);

/**

 * Get bug report URL.

 *

 * @return Bug report URL string.

 */

DRIZZLE_API

const char *drizzle_bugreport(void);

/**

 * Get string with the name of the given verbose level.

 *

 * @param[in] verbose Verbose logging level.

 * @return String form of verbose level.

 */

DRIZZLE_API

const char *drizzle_verbose_name(drizzle_verbose_t verbose);

/**

 * Initialize a drizzle structure. Always check the return value even if passing

 * in a pre-allocated structure. Some other initialization may have failed.

 *

 * @param[in] drizzle Caller allocated structure, or NULL to allocate one.

 * @return On success, a pointer to the (possibly allocated) structure. On

 * failure this will be NULL.

 */

DRIZZLE_API

drizzle_st *drizzle_create();

/**

 * Clone a drizzle structure.

 *

 * @param[in] drizzle Caller allocated structure, or NULL to allocate one.

 * @param[in] from Drizzle structure to use as a source to clone from.

 * @return Same return as drizzle_create().

 */

DRIZZLE_API

drizzle_st *drizzle_clone(const drizzle_st *from);

/**

 * Free a drizzle structure.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 */

DRIZZLE_API

void drizzle_free(drizzle_st *drizzle);

/**

 * Return an error string for last error encountered.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @return Pointer to static buffer in library that holds an error string.

 */

DRIZZLE_API

const char *drizzle_error(const drizzle_st *drizzle);

/**

 * Value of errno in the case of a DRIZZLE_RETURN_ERRNO return value.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @return An errno value as defined in your system errno.h file.

 */

DRIZZLE_API

int drizzle_errno(const drizzle_st *drizzle);

/**

 * Get server defined error code for the last result read.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @return An error code given back in the server response.

 */

DRIZZLE_API

uint16_t drizzle_error_code(const drizzle_st *drizzle);

/**

 * Get SQL state code for the last result read.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @return A SQLSTATE code given back in the server response.

 */

DRIZZLE_API

const char *drizzle_sqlstate(const drizzle_st *drizzle);

/**

 * Get application context pointer.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @return Application context that was previously set, or NULL.

 */

DRIZZLE_API

void *drizzle_context(const drizzle_st *drizzle);

/**

 * Set application context pointer.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @param[in] context Application context to set.

 */

DRIZZLE_API

void drizzle_set_context(drizzle_st *drizzle, void *context);

/**

 * Set function to call when the drizzle structure is being cleaned up so

 * the application can clean up the context pointer.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @param[in] function Function to call to clean up drizzle context.

 */

DRIZZLE_API

void drizzle_set_context_free_fn(drizzle_st *drizzle,

                                 drizzle_context_free_fn *function);

/**

 * Get current socket I/O activity timeout value.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @return Timeout in milliseconds to wait for I/O activity. A negative value

 *  means an infinite timeout.

 */

DRIZZLE_API

int drizzle_timeout(const drizzle_st *drizzle);

/**

 * Set socket I/O activity timeout for connections in a Drizzle structure.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @param[in] timeout Milliseconds to wait for I/O activity. A negative value

 *  means an infinite timeout.

 */

DRIZZLE_API

void drizzle_set_timeout(drizzle_st *drizzle, int timeout);

/**

 * Get current verbosity threshold for logging messages.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @return Current verbosity threshold.

 */

DRIZZLE_API

drizzle_verbose_t drizzle_verbose(const drizzle_st *drizzle);

/**

 * Set verbosity threshold for logging messages. If this is set above

 * DRIZZLE_VERBOSE_NEVER and the drizzle_set_log_fn() callback is set to NULL,

 * messages are printed to STDOUT.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @param[in] verbose Verbosity threshold of what to log.

 */

DRIZZLE_API

void drizzle_set_verbose(drizzle_st *drizzle, drizzle_verbose_t verbose);

/**

 * Set logging function for a drizzle structure. This function is only called

 * for log messages that are above the verbosity threshold set with

 * drizzle_set_verbose().

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @param[in] function Function to call when there is a logging message.

 * @param[in] context Argument to pass into the callback function.

 */

DRIZZLE_API

void drizzle_set_log_fn(drizzle_st *drizzle, drizzle_log_fn *function,

                        void *context);

/**

 * Set a custom I/O event watcher function for a drizzle structure. Used to

 * integrate libdrizzle with a custom event loop. The callback will be invoked

 * to register or deregister interest in events for a connection. When the

 * events are triggered, drizzle_con_set_revents() should be called to

 * indicate which events are ready. The event loop should stop waiting for

 * these events, as libdrizzle will call the callback again if it is still

 * interested. To resume processing, the libdrizzle function that returned

 * DRIZZLE_RETURN_IO_WAIT should be called again. See drizzle_event_watch_fn().

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @param[in] function Function to call when there is an I/O event.

 * @param[in] context Argument to pass into the callback function.

 */

DRIZZLE_API

void drizzle_set_event_watch_fn(drizzle_st *drizzle,

                                drizzle_event_watch_fn *function,

                                void *context);

/**

 * Initialize a connection structure. Always check the return value even if

 * passing in a pre-allocated structure. Some other initialization may have

 * failed.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @param[in] con Caller allocated structure, or NULL to allocate one.

 * @return On success, a pointer to the (possibly allocated) structure. On

 *  failure this will be NULL.

 */

DRIZZLE_API

drizzle_con_st *drizzle_con_create(drizzle_st *drizzle);

/**

 * Clone a connection structure.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @param[in] con Caller allocated structure, or NULL to allocate one.

 * @param[in] from Connection structure to use as a source to clone from.

 * @return Same return as drizzle_con_create().

 */

DRIZZLE_API

drizzle_con_st *drizzle_con_clone(drizzle_st *drizzle, drizzle_con_st *con);

DRIZZLE_API

drizzle_return_t drizzle_set_option(drizzle_st *drizzle, drizzle_options_t arg, bool set);

/**

 * Free a connection structure.

 *

 * @param[in] con Connection structure previously initialized with

 *  drizzle_con_create(), drizzle_con_clone(), or related functions.

 */

DRIZZLE_API

void drizzle_con_free(drizzle_con_st *con);

/**

 * Free all connections in a drizzle structure.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 */

DRIZZLE_API

void drizzle_con_free_all(drizzle_st *drizzle);

/**

 * Wait for I/O on connections.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @return Standard drizzle return value.

 */

DRIZZLE_API

drizzle_return_t drizzle_con_wait(drizzle_st *drizzle);

/**

 * Get next connection that is ready for I/O.

 *

 * @param[in] drizzle Drizzle structure previously initialized with

 *  drizzle_create() or drizzle_clone().

 * @return Connection that is ready for I/O, or NULL if there are none.

 */

DRIZZLE_API

drizzle_con_st *drizzle_con_ready(drizzle_st *drizzle);

/** @} */

#ifdef  __cplusplus

}

#endif