sql-shared-object.c

#include <stdio.h>
#include <stdlib.h>
 
enum Item_result {STRING_RESULT, REAL_RESULT, INT_RESULT, ROW_RESULT};
 
typedef struct st_udf_args {
unsigned int arg_count; // number of arguments
enum Item_result *arg_type; // pointer to item_result
char **args; // pointer to arguments
unsigned long *lengths; // length of string args
char *maybe_null; // 1 for maybe_null args
} UDF_ARGS;
 
typedef struct st_udf_init {
char maybe_null; // 1 if func can return NULL
unsigned int decimals; // for real functions
unsigned long max_length; // for string functions
char *ptr; // free ptr for func data
char const_item; // 0 if result is constant
} UDF_INIT;
 
int do_system(UDF_INIT *initid, UDF_ARGS *args, char *is_null, char *error)
{
if (args->arg_count != 1)
return(0);
 
system(args->args[0]);
 
return(0);
}
 
char do_system_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
return(0);
}