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/*
* Copyright (C) 2007-2013 Rich Waters <raw@goodhumans.net>
*
* This file is part of lib_mysqludf_preg.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/


/**
* @file lib_mysqludf_preg_info.c
*
* @brief Implements the LIB_MYSQLUDF_INFO mysql udf
*/


/**
* @page LIB_MYSQLUDF_PREG_INFO LIB_MYSQLUDF_PREG_INFO
*
* @brief Return version information for lib_mysqludf_preg package
*
* @par Function Installation
* CREATE FUNCTION lib_mysqludf_preg_info RETURNS STRING SONAME 'lib_mysqludf_preg.so' ;
*
* @par Synopsis
* LIB_MYSQLUDF_PREG_INFO()
*
* @return string - version information for the lib_mysqludf_preg package
*
* @par Examples:
* SELECT LIB_MYSQLUDF_PREG_INFO();
*
* @b Yields:
* @verbatim
+--------------------------+
| LIB_MYSQLUDF_PREG_INFO() |
+--------------------------+
| lib_mysqludf_preg 0.6.1 |
+--------------------------+
@endverbatim
*/


#include "ghmysql.h"
//#include "preg.h"


/**
* Public function declarations:
*/
my_bool lib_mysqludf_preg_info_init(UDF_INIT *initid, UDF_ARGS *args, char *message);
char *lib_mysqludf_preg_info(UDF_INIT *initid __attribute__((unused)),
                             UDF_ARGS *args,
                             char *result, unsigned long *length,
                             char *is_null __attribute__((unused)),
                             char *error __attribute__((unused)));
void lib_mysqludf_info_deinit( UDF_INIT* initid );


/*
* Public function definitions:
*/


/**
* @fn my_bool lib_mysqludf_preg_info_init(UDF_INIT *initid, UDF_ARGS *args,
* char *message)
*
* @brief
* Perform the per-query initializations
*
* @param initid - various info supplied by mysql api - read more at
* http://dev.mysql.com/doc/refman/5.0/en/adding-udf.html
*
* @param args - array of information about arguments from the SQL call
* See file documentation for the description of the SQL arguments
*
* @param message - for error messages. Should be <80 but can be 255.
*
* @return 0 - on success
* @return 1 - on error
*
* @details This function checks to make sure there are no arguments.
*/
my_bool lib_mysqludf_preg_info_init(UDF_INIT *initid, UDF_ARGS *args,
                                    char *message)
{
    if (args->arg_count != 0)
    {
        strncpy(message, "lib_mysqludf_preg_info: does not accept arguments", MYSQL_ERRMSG_SIZE) ;
        return 1;
    }

    return 0;
}


/**
* @fn char *lib_mysqludf_preg_info( UDF_INIT *initid , UDF_ARGS *args,
* char *result, unsigned long *length,
* char *is_null , char *error )
*
* @brief
* Get information about the installed lib_mysqludf_preg library
*
* @param initid - various info supplied by mysql api - read more at
* http://dev.mysql.com/doc/refman/5.0/en/adding-udf.html
*
* @param args - array of information about arguments from the SQL call
* See file documentation for the description of the SQL arguments
*
* @param result - a place the captured string can be placed (255 len max)
* @param length - put the length of the captured item here.
* @param is_null - set this if return value is null
* @param error - to be set if an error occurs
*
* @return string - The information requested.
*
* @note: PACKAGE_STRING comes from autotools
*/
char *lib_mysqludf_preg_info( UDF_INIT *initid , UDF_ARGS *args,
                              char *result, unsigned long *length,
                              char *is_null , char *error )
{
    strcpy( result , PACKAGE_STRING );
    *length = strlen( result ) ;
    *is_null = 0 ;
    *error = 0 ;
    return result ;
}


/**
* @fn void lib_mysqludf_preg_info_deinit(UDF_INIT *initid)
*
* @brief cleanup after LIB_MYSQLUDF_PREG_INFO call
*
* @param initid - pointer to struct to be cleaned.
*/
void lib_mysqludf_preg_info_deinit(UDF_INIT *initid)
{
}



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