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libmariadb_fortran.f90
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! mariadb_fortran.f90
!
! Fortran wrapper library for Mariadb-connector/C
! Download dll file here for windows OS:
! https://mariadb.com/kb/en/mariadb-connector-c/
! 1-1-2022
! Author: Vu Hoang Giang
! GitHub: https://github.com/v-h-giang/Mariadb_connector_fortran
! Licence: MIT
module mariadb_fortran
use,intrinsic :: iso_c_binding
use :: c_util ,only : c_uint64_t,c_unsigned_char,c_unsigned_long
implicit none
INTEGER, PARAMETER :: UINT = C_INT, DWORD = C_LONG
INTEGER, PARAMETER :: MYSQL_ERRMSG_SIZE = 512
INTEGER, PARAMETER :: SQLSTATE_LENGTH = 5
CHARACTER(kind=c_char, len=*), PARAMETER :: LOCAL_HOST = "localhost"
INTEGER, PARAMETER :: MYSQL_OPT_NONBLOCK = 6000
INTEGER, PARAMETER :: MYSQL_WAIT_READ = 1
INTEGER, PARAMETER :: MYSQL_WAIT_WRITE = 2
INTEGER, PARAMETER :: MYSQL_WAIT_EXCEPT = 4
INTEGER, PARAMETER :: MYSQL_WAIT_TIMEOUT = 8
INTEGER, PARAMETER :: POLLRDNORM = 256
INTEGER, PARAMETER :: POLLRDBAND = 512
INTEGER, PARAMETER :: POLLIN = IOR(POLLRDNORM,POLLRDBAND)
INTEGER, PARAMETER :: POLLPRI = 1024
INTEGER, PARAMETER :: POLLWRNORM = 16
INTEGER, PARAMETER :: POLLOUT = POLLWRNORM
INTEGER, PARAMETER :: POLLWRBAND = 32
INTEGER, PARAMETER :: POLLERR = 1
INTEGER, PARAMETER :: POLLHUP = 2
INTEGER, PARAMETER :: POLLNVAL = 4
TYPE :: db_field_in_row
CHARACTER(len = : ), ALLOCATABLE :: text
END TYPE db_field_in_row
TYPE :: DATABASE_CONNECT_INFO
CHARACTER(len = : ), ALLOCATABLE :: IP_ADDRESS
CHARACTER(len = : ), ALLOCATABLE :: USERNAME
CHARACTER(len = : ), ALLOCATABLE :: PASSWORD
INTEGER :: PORT_ID = 3306
TYPE(db_field_in_row),DIMENSION(:,:),ALLOCATABLE:: DATA
CONTAINS
PROCEDURE :: RUN
END TYPE DATABASE_CONNECT_INFO
TYPE, bind(c) :: MA_MEM_ROOT
TYPE(c_ptr) :: free ! MA_USED_MEM *free
TYPE(c_ptr) :: used ! MA_USED_MEM *used
TYPE(c_ptr) :: pre_alloc ! MA_USED_MEM *pre_alloc
INTEGER(c_uint64_t) :: min_malloc ! size_t min_malloc
INTEGER(c_uint64_t) :: block_size ! size_t block_size
INTEGER(DWORD) :: block_num ! unsigned int block_num
INTEGER(DWORD) :: first_block_usage ! unsigned int first_block_usage
type(c_funptr) :: error_handler
! void (*error_handler)(void)
END TYPE MA_MEM_ROOT
TYPE,bind(c) :: NET
TYPE(c_ptr) :: pvio ! MARIADB_PVIO *pvio
INTEGER(c_unsigned_char) :: buff ! unsigned char *buff
INTEGER(c_unsigned_char) :: buff_end ,write_pos, read_pos ! unsigned char *buff_end,*write_pos,*read_pos
INTEGER(c_uint64_t) :: fd ! my_socket fd /* For Perl DBI/dbd */
INTEGER(c_unsigned_long) :: remain_in_buf,length ! unsigned long remain_in_buf,length
INTEGER(c_unsigned_long) :: buf_length, where_b ! unsigned long buf_length, where_b
INTEGER(c_unsigned_long) :: max_packet, max_packet_size ! unsigned long max_packet, max_packet_size
INTEGER(DWORD) :: pkt_nr, compress_pkt_nr ! unsigned int pkt_nr, compress_pkt_nr
INTEGER(DWORD) :: write_timeout , read_timeout, retry_count
! unsigned int write_timeout, read_timeout, retry_count
INTEGER(C_INT) :: fcntl ! int fcntl
TYPE(c_ptr) :: return_status ! unsigned int *return_status
INTEGER(c_unsigned_char) :: reading_or_writing ! unsigned char reading_or_writing
CHARACTER(c_char) :: save_char ! char save_char
CHARACTER(c_char) :: unused_1 ! char unused_1
!typedef char my_bool
CHARACTER(c_char) :: unused_2 ! my_bool unused_2
CHARACTER(c_char) :: compress ! my_bool compress
CHARACTER(c_char) :: unused_3 ! my_bool unused_3
TYPE(c_ptr) :: unused_4 ! void *unused_4
INTEGER(DWORD) :: last_errno ! unsigned int last_errno
INTEGER(c_unsigned_char) :: error ! unsigned char error
CHARACTER(c_char) :: unused_5 ! my_bool unused_5
CHARACTER(c_char) :: unused_6 ! my_bool unused_6
CHARACTER(c_char),DIMENSION(MYSQL_ERRMSG_SIZE) :: last_error ! char last_error[MYSQL_ERRMSG_SIZE]
CHARACTER(c_char),DIMENSION(SQLSTATE_LENGTH+1) :: sqlstate ! char sqlstate[SQLSTATE_LENGTH+1]
TYPE(c_ptr) :: extension ! struct st_mariadb_net_extension *extension
END TYPE NET
TYPE,BIND(C) :: LIST
type(c_ptr) :: prev, next
type(c_ptr) :: data
END TYPE LIST
TYPE,BIND(C) :: st_mysql_options
INTEGER(UINT) :: connect_timeout, read_timeout, write_timeout
INTEGER(UINT) :: port, protocol
INTEGER(c_unsigned_long) :: client_flag
type(c_ptr) :: host,user,password,unix_socket,db
type(c_ptr) :: init_command
type(c_ptr) :: my_cnf_file,my_cnf_group, charset_dir, charset_name
type(c_ptr) :: ssl_key !PEM key file
type(c_ptr) :: ssl_cert ! PEM cert file
type(c_ptr) :: ssl_ca ! PEM CA file
type(c_ptr) :: ssl_capath ! PEM directory of CA-s?
type(c_ptr) :: ssl_cipher
type(c_ptr) :: shared_memory_base_name
INTEGER(c_unsigned_long) :: max_allowed_packet
CHARACTER(c_char) :: use_ssl
CHARACTER(c_char) :: compress,named_pipe
CHARACTER(c_char) :: reconnect, unused_1, unused_2, unused_3
INTEGER(c_int) :: methods_to_use
type(c_ptr) :: bind_address
CHARACTER(c_char) :: secure_auth
CHARACTER(c_char) :: report_data_truncation
! /* function pointers for local infile support */
! int (*local_infile_init)(void **, const char *, void *)
! int (*local_infile_read)(void *, char *, unsigned int)
! void (*local_infile_end)(void *)
! int (*local_infile_error)(void *, char *, unsigned int)
! void *local_infile_userdata
! struct st_mysql_options_extension *extension
END TYPE st_mysql_options
TYPE,bind(c) :: MYSQL
TYPE(NET) :: net
type(c_ptr) :: unused_0
type(c_ptr) :: host,user,passwd,unix_socket,server_version,host_info
type(c_ptr) :: info,db ! char *info,*db
type(c_ptr) :: charset ! const struct ma_charset_info_st *charset ! character set
type(c_ptr) :: fields ! MYSQL_FIELD *fields
type(MA_MEM_ROOT) :: field_alloc
INTEGER(c_uint64_t) :: affected_rows ! unsigned long_ long affected_rows
INTEGER(c_uint64_t) :: insert_id ! unsigned long_ long insert_id
INTEGER(c_uint64_t) :: extra_info ! unsigned long_ long extra_info
INTEGER(DWORD) :: thread_id
INTEGER(DWORD) :: packet_length
INTEGER(UINT) :: port ! unsigned int port
INTEGER(DWORD) :: client_flag
INTEGER(DWORD) :: server_capabilities
INTEGER(DWORD) :: protocol_version ! unsigned int protocol_version
INTEGER(DWORD) :: field_count ! unsigned int field_count
INTEGER(DWORD) :: server_status ! unsigned int server_status
INTEGER(DWORD) :: server_language ! unsigned int server_language
INTEGER(DWORD) :: warning_count ! unsigned int warning_count
type(st_mysql_options) :: options ! struct st_mysql_options options
INTEGER(c_int) :: status ! enum mysql_status status
CHARACTER(c_char) :: free_me ! my_bool free_me
CHARACTER(c_char) :: unused_1 ! my_bool unused_1
CHARACTER(C_char) :: scramble_buff(21) ! char scramble_buff[20+ 1]
! madded after 3.23.58 !
CHARACTER(c_char) :: unused_2 ! my_bool unused_2
type(c_ptr) :: unused_3,unused_4,unused_5,unused_6
TYPE(LIST) :: stmts ! LIST *stmts
type(c_ptr) :: methods ! const struct st_mariadb_methods *methods
type(c_ptr) :: thd ! void *thd
type(c_ptr) :: unbuffered_fetch_owner ! my_bool *unbuffered_fetch_owner
type(c_ptr) :: info_buffer ! char *info_buffer
type(c_ptr) :: extension ! struct st_mariadb_extension *extension
END TYPE MYSQL
TYPE, bind(c) :: MYSQL_RES
INTEGER(c_uint64_t) :: row_count
INTEGER(DWORD) :: field_count, current_field
type(c_ptr) :: fields ! MYSQL_FIELD *fields
type(c_ptr) :: data !MYSQL_DATA *data
type(c_ptr) :: data_cursor !MYSQL_ROWS *data_cursor
type(MA_MEM_ROOT) :: field_alloc !MA_MEM_ROOT field_alloc
type(c_ptr) :: row
type(c_ptr) :: current_row
type(c_ptr) :: lengths !unsigned long *lengths ! column lengths of current row
type(c_ptr) :: handle !MYSQL *handle ! for unbuffered reads
CHARACTER(c_char) :: eof !my_bool eof ! Used my mysql_fetch_row
CHARACTER(c_char) :: is_ps !my_bool is_ps
END TYPE MYSQL_RES
TYPE,BIND(C) :: MYSQL_ROWS
type(c_ptr) :: next !struct st_mysql_rows *next !list of rows
type(c_ptr) :: data ! typedef char **MYSQL_ROW
INTEGER(c_unsigned_long) :: length
END TYPE MYSQL_ROWS
TYPE,BIND(C) :: pollfd
INTEGER(c_uint64_t) :: fd
INTEGER(c_short) :: events
INTEGER(c_short) :: revents
END TYPE pollfd
INTERFACE
! int STDCALL mysql_server_init(int argc, char **argv, char **groups)
FUNCTION mysql_library_init(argc, argv, groups) bind(c,name = "mysql_server_init")
import :: c_ptr , MYSQL,c_int
implicit none
INTEGER(c_int),VALUE :: argc
type(c_ptr) :: argv
type(c_ptr) :: groups
!GCC$ ATTRIBUTES STDCALL :: mysql_library_init
INTEGER(c_int) :: mysql_library_init
END FUNCTION mysql_library_init
! MYSQL * STDCALL mysql_init(MYSQL *mysql)
FUNCTION mysql_init(mysql_) bind(c,name = "mysql_init")
import :: c_ptr , MYSQL
implicit none
type(MYSQL),OPTIONAL :: mysql_
!GCC$ ATTRIBUTES STDCALL :: mysql_init
type(c_ptr) :: mysql_init
END FUNCTION mysql_init
! void STDCALL mysql_close(MYSQL *sock)
SUBROUTINE mysql_close(sock_sql) bind(c,name = "mysql_close")
import :: c_ptr , MYSQL
implicit none
type(MYSQL) :: sock_sql
!GCC$ ATTRIBUTES STDCALL :: mysql_close
END SUBROUTINE mysql_close
! void (*error_handler)(void)
FUNCTION error_handler() bind(c,name = "error_handler")
import :: c_ptr
implicit none
!GCC$ ATTRIBUTES STDCALL :: error_handler
type(c_ptr) :: error_handler
END FUNCTION
! MYSQL * STDCALL mysql_real_connect(MYSQL *mysql, const char *host,
! const char *user,
! const char *passwd,
! const char *db,
! unsigned int port,
! const char *unix_socket,
! unsigned long clientflag)
FUNCTION mysql_real_connect(mysql_, host, user, password,&
db, port, unix_socket,clientflag) bind(c,name = "mysql_real_connect")
import :: c_ptr , MYSQL,c_char,c_int, c_unsigned_long
implicit none
type(MYSQL) :: mysql_
CHARACTER(C_CHAR),DIMENSION(*) :: host
CHARACTER(C_CHAR),DIMENSION(*) :: user
CHARACTER(C_CHAR),DIMENSION(*) :: password
CHARACTER(C_CHAR),DIMENSION(*) :: db
INTEGER(c_int),VALUE :: port
CHARACTER(C_CHAR),DIMENSION(*) :: unix_socket
INTEGER(c_unsigned_long),VALUE :: clientflag
!GCC$ ATTRIBUTES STDCALL :: mysql_real_connect
type(c_ptr) :: mysql_real_connect
END FUNCTION mysql_real_connect
! int STDCALL mysql_real_connect_start(MYSQL **ret, MYSQL *mysql,
! const char *host,
! const char *user,
! const char *passwd,
! const char *db,
! unsigned int port,
! const char *unix_socket,
! unsigned long clientflag)
FUNCTION mysql_real_connect_start(ret,mysql_, host, user, password,&
db, port, unix_socket,clientflag) bind(c,name = "mysql_real_connect_start")
import :: c_ptr , MYSQL,c_char,c_int, c_unsigned_long
implicit none
type(c_ptr) :: ret
type(MYSQL) :: mysql_
CHARACTER(C_CHAR),DIMENSION(*) :: host
CHARACTER(C_CHAR),DIMENSION(*) :: user
CHARACTER(C_CHAR),DIMENSION(*),OPTIONAL :: password
CHARACTER(C_CHAR),DIMENSION(*),OPTIONAL :: db
INTEGER(c_int),VALUE :: port
CHARACTER(C_CHAR),DIMENSION(*),OPTIONAL :: unix_socket
INTEGER(c_unsigned_long),VALUE :: clientflag
!GCC$ ATTRIBUTES STDCALL :: mysql_real_connect_start
INTEGER(c_int) :: mysql_real_connect_start
END FUNCTION mysql_real_connect_start
! int mysql_options(MYSQL *mysql,enum mysql_option option, const void *arg)
FUNCTION mysql_options(mysql_, option, arg) bind(c,name = "mysql_options")
import :: c_ptr , MYSQL,c_int
implicit none
type(MYSQL) :: mysql_
INTEGER(c_int),VALUE :: option
type(c_ptr),VALUE :: arg
!GCC$ ATTRIBUTES STDCALL :: mysql_options
INTEGER(c_int) :: mysql_options
END FUNCTION mysql_options
! int STDCALL mysql_real_connect_cont(MYSQL **ret, MYSQL *mysql,int status)
FUNCTION mysql_real_connect_cont(ret,mysql_, status) bind(c,name = "mysql_real_connect_cont")
import :: c_ptr , MYSQL,c_int
implicit none
type(c_ptr) :: ret
type(MYSQL) :: mysql_
INTEGER(c_int),VALUE :: status
!GCC$ ATTRIBUTES STDCALL :: mysql_real_connect_cont
INTEGER(c_int) :: mysql_real_connect_cont
END FUNCTION mysql_real_connect_cont
! my_socket STDCALL mysql_get_socket(MYSQL *mysql)
FUNCTION mysql_get_socket(mysql_) bind(c,name = "mysql_get_socket")
import :: c_uint64_t , MYSQL
implicit none
type(MYSQL) :: mysql_
!GCC$ ATTRIBUTES STDCALL :: mysql_get_socket
INTEGER(c_uint64_t) :: mysql_get_socket ! unsigned long long
END FUNCTION mysql_get_socket
! int STDCALL mysql_real_query_start(int *ret, MYSQL *mysql, const char *q, unsigned long length)
FUNCTION mysql_real_query_start(ret,mysql_, q, length ) bind(c,name = "mysql_real_query_start")
import :: c_unsigned_long , MYSQL,c_int,c_char
implicit none
INTEGER(c_int) :: ret
type(MYSQL) :: mysql_
CHARACTER(C_CHAR),DIMENSION(*) :: q
INTEGER(c_unsigned_long),VALUE :: length
!GCC$ ATTRIBUTES STDCALL :: mysql_real_query_start
INTEGER(c_int) :: mysql_real_query_start
END FUNCTION mysql_real_query_start
! int STDCALL mysql_real_query_cont(int *ret, MYSQL *mysql, int status)
FUNCTION mysql_real_query_cont(ret,mysql_, status) bind(c,name = "mysql_real_query_cont")
import :: MYSQL,c_int
implicit none
INTEGER(c_int) :: ret
type(MYSQL) :: mysql_
INTEGER(c_int),VALUE :: status
!GCC$ ATTRIBUTES STDCALL :: mysql_real_query_cont
INTEGER(c_int) :: mysql_real_query_cont
END FUNCTION mysql_real_query_cont
! MYSQL_RES * STDCALL mysql_use_result(MYSQL *mysql);
FUNCTION mysql_use_result(mysql_) bind(c,name = "mysql_use_result")
import :: c_ptr , MYSQL
implicit none
type(MYSQL) :: mysql_
!GCC$ ATTRIBUTES STDCALL :: mysql_use_result
type(c_ptr) :: mysql_use_result
END FUNCTION mysql_use_result
! void STDCALL mysql_free_result(MYSQL_RES *result)
subroutine mysql_free_result(result) bind(c,name = "mysql_free_result")
import :: MYSQL_RES
implicit none
type(MYSQL_RES) :: result
!GCC$ ATTRIBUTES STDCALL :: mysql_free_result
end subroutine mysql_free_result
! int STDCALL mysql_fetch_row_start(MYSQL_ROW *ret,MYSQL_RES *result)
FUNCTION mysql_fetch_row_start(ret,result) bind(c,name = "mysql_fetch_row_start")
import :: c_ptr , MYSQL_RES , c_int
implicit none
type(c_ptr) :: ret
type(MYSQL_RES) :: result
!GCC$ ATTRIBUTES STDCALL :: mysql_fetch_row_start
INTEGER(c_int) :: mysql_fetch_row_start
END FUNCTION mysql_fetch_row_start
!unsigned int STDCALL mysql_errno(MYSQL *mysql)
FUNCTION mysql_errno(mysql_) bind(c,name = "mysql_errno")
import :: MYSQL,DWORD
implicit none
type(MYSQL) :: mysql_
!GCC$ ATTRIBUTES STDCALL :: mysql_errno
INTEGER(DWORD) :: mysql_errno
END FUNCTION mysql_errno
! int STDCALL mysql_fetch_row_cont(MYSQL_ROW *ret, MYSQL_RES *result,int status)
FUNCTION mysql_fetch_row_cont(ret,result,status) bind(c,name = "mysql_fetch_row_cont")
import :: c_ptr , MYSQL_RES , c_int
implicit none
type(c_ptr) :: ret
type(MYSQL_RES) :: result
INTEGER(c_int),VALUE :: status
!GCC$ ATTRIBUTES STDCALL :: mysql_fetch_row_cont
INTEGER(c_int) :: mysql_fetch_row_cont
END FUNCTION mysql_fetch_row_cont
subroutine mysql_server_end() bind(c,name = "mysql_server_end")
implicit none
end subroutine mysql_server_end
! int WSAAPI WSAPoll(
! [in, out] LPWSAPOLLFD fdArray,
! [in] ULONG fds,
! [in] INT timeout
FUNCTION WSAPoll(fdArray,fds,timeout) bind(c,name = "WSAPoll")
import :: pollfd,c_unsigned_long, c_int
implicit none
type(pollfd) :: fdArray
INTEGER(c_unsigned_long),VALUE :: fds
INTEGER(c_int),VALUE :: timeout
!GCC$ ATTRIBUTES STDCALL :: WSAPoll
INTEGER(c_int) :: WSAPoll
END FUNCTION WSAPoll
! unsigned int STDCALL mysql_get_timeout_value(const MYSQL *mysql)
FUNCTION mysql_get_timeout_value(mysql_) bind(c,name = "mysql_get_timeout_value")
import :: DWORD , MYSQL
implicit none
type(MYSQL) :: mysql_
!GCC$ ATTRIBUTES STDCALL :: mysql_get_timeout_value
INTEGER(DWORD) :: mysql_get_timeout_value
END FUNCTION mysql_get_timeout_value
! ! unsigned int STDCALL mysql_num_fields(MYSQL_RES *res)
FUNCTION mysql_num_fields(res) bind(c,name = "mysql_num_fields")
import :: MYSQL_RES , c_int
implicit none
type(MYSQL_RES) :: res
!GCC$ ATTRIBUTES STDCALL :: mysql_num_fields
INTEGER(c_int) :: mysql_num_fields
END FUNCTION mysql_num_fields
!unsigned long * STDCALL mysql_fetch_lengths(MYSQL_RES *result)
FUNCTION mysql_fetch_lengths(res) bind(c,name = "mysql_fetch_lengths")
import :: MYSQL_RES , c_ptr
implicit none
type(MYSQL_RES) :: res
!GCC$ ATTRIBUTES STDCALL :: mysql_fetch_lengths
type(c_ptr) :: mysql_fetch_lengths
END FUNCTION mysql_fetch_lengths
! unsigned long long STDCALL mysql_num_rows(MYSQL_RES *res)
FUNCTION mysql_num_rows(res) bind(c,name = "mysql_num_rows")
import :: c_ptr ,c_uint64_t
implicit none
type(c_ptr),VALUE :: res
!GCC$ ATTRIBUTES STDCALL :: mysql_num_rows
INTEGER(c_uint64_t) :: mysql_num_rows
END FUNCTION mysql_num_rows
! MYSQL_RES * STDCALL mysql_store_result(MYSQL *mysql)
FUNCTION mysql_store_result(mysql_) bind(c,name = "mysql_store_result")
import :: c_ptr , MYSQL
implicit none
type(MYSQL) :: mysql_
!GCC$ ATTRIBUTES STDCALL :: mysql_store_result
type(c_ptr) :: mysql_store_result
END FUNCTION mysql_store_result
END INTERFACE
INTERFACE mysql_library_end
procedure :: mysql_server_end
END INTERFACE mysql_library_end
contains
FUNCTION DATABASE(IP_ADDRESS,USERNAME,PASSWORD,PORT_ID)
implicit none
TYPE(DATABASE_CONNECT_INFO) :: DATABASE
CHARACTER(len = *) :: IP_ADDRESS
CHARACTER(len = *) :: USERNAME
CHARACTER(len = *) :: PASSWORD
INTEGER :: PORT_ID
DATABASE = DATABASE_CONNECT_INFO(IP_ADDRESS,USERNAME,PASSWORD,PORT_ID)
ALLOCATE(DATABASE%DATA(0,0))
END FUNCTION
FUNCTION wait_for_mysql(mysql_, status)
implicit none
type(MYSQL) :: mysql_
INTEGER :: status
type(pollfd) :: pfd
INTEGER :: timeout, res
INTEGER :: wait_for_mysql
pfd = pollfd(0,0,0)
pfd%fd = mysql_get_socket(mysql_)
! print *, "pfd%fd = ", pfd%fd
if (status == MYSQL_WAIT_READ) then
! print *, "pfd%events = POLLIN"
pfd%events = POLLIN
else if (status == MYSQL_WAIT_WRITE) then
! print *, "pfd%events = POLLOUT"
pfd%events = POLLOUT
else if (status == MYSQL_WAIT_EXCEPT) then
! print *, "pfd%events = POLLPRI"
pfd%events = POLLPRI
else
! print *, "pfd%events = 0"
pfd%events = 0
end if
if (status == MYSQL_WAIT_TIMEOUT) then
timeout = 1000*mysql_get_timeout_value(mysql_)
else
timeout = 3000
end if
res = WSAPoll(pfd, 1, timeout)
if (res == 0) then
wait_for_mysql = MYSQL_WAIT_TIMEOUT
else if (res < 0) then
wait_for_mysql = MYSQL_WAIT_TIMEOUT
else
wait_for_mysql = 0
if (pfd%revents == POLLIN) wait_for_mysql = IOR(status,MYSQL_WAIT_READ)
if (pfd%revents == POLLOUT) wait_for_mysql = IOR(status,MYSQL_WAIT_WRITE)
if (pfd%revents == POLLPRI) wait_for_mysql = IOR(status,MYSQL_WAIT_EXCEPT)
end if
END FUNCTION wait_for_mysql
SUBROUTINE EXECUTE_COMMAND_DATABASE(comm,ipaddress,username,password,port_id,DATA_)
type(c_ptr) :: mysql_ptr
type(c_ptr) :: row
type(c_ptr),DIMENSION(:),POINTER :: fields_ptr_array
CHARACTER(kind = c_char),DIMENSION(:),POINTER :: row_variables
CHARACTER(len = 1000) :: row_variables_f
type(db_field_in_row),DIMENSION(:),ALLOCATABLE :: field_value
type(MYSQL),POINTER :: mysql_variable
INTEGER :: status, err
type(MYSQL_RES),POINTER :: res
type(c_ptr) :: res_ptr
INTEGER :: number_fields
INTEGER(c_uint64_t) :: number_rows
integer(c_unsigned_long),DIMENSION(:),POINTER :: stringlen
type(c_ptr) :: field_length_array
INTEGER :: i, rsv,a
CHARACTER(len = *) :: comm
CHARACTER(len = *) :: ipaddress
CHARACTER(len = *) :: username
CHARACTER(len = *),OPTIONAL :: password
CHARACTER(c_char),DIMENSION(260) :: comm_
CHARACTER(c_char),DIMENSION(260) :: ipaddress_
CHARACTER(c_char),DIMENSION(260) :: username_
CHARACTER(c_char),DIMENSION(260) :: password_
INTEGER :: port_id
TYPE(db_field_in_row),DIMENSION(:,:),ALLOCATABLE,OPTIONAL :: DATA_
comm_ = cchar(comm)
ipaddress_ = cchar(ipaddress)
username_ = cchar(username)
rsv = mysql_library_init(0,c_null_ptr,c_null_ptr)
mysql_ptr = mysql_init()
CALL C_F_POINTER(mysql_ptr, mysql_variable)
rsv = mysql_options(mysql_variable, MYSQL_OPT_NONBLOCK, c_null_ptr)
if (.NOT.PRESENT(password)) then
status = mysql_real_connect_start(mysql_ptr,mysql_variable,ipaddress_, &
user = username_, port = port_id, clientflag = 0)
else
password_ = cchar(password)
status = mysql_real_connect_start(mysql_ptr,mysql_variable,ipaddress_, &
user = username_,password = password_, port = port_id, clientflag = 0)
end if
do while (status /= 0)
rsv = wait_for_mysql(mysql_variable,status)
status = mysql_real_connect_cont(mysql_ptr,mysql_variable,status)
end do
status = mysql_real_query_start(err, mysql_variable, comm_,len(comm))
do while (status /= 0)
rsv = wait_for_mysql(mysql_variable,status)
status = mysql_real_query_cont(err, mysql_variable, status)
end do
res_ptr = mysql_store_result(mysql_variable)
! res_ptr = mysql_use_result(mysql_variable)
if ((.NOT.c_associated(res_ptr)).OR.(c_associated(res_ptr,c_null_ptr))) then
print *, "mysql_use_result() returns error"
res_ptr = c_null_ptr
CALL mysql_close(mysql_variable)
mysql_ptr = c_null_ptr
call mysql_library_end
RETURN
end if
number_rows = mysql_num_rows(res_ptr)
call C_F_POINTER(res_ptr, res)
number_fields = mysql_num_fields(res)
ALLOCATE(field_value(number_fields))
if (PRESENT(DATA_)) then
if ((SIZE(DATA_,DIM = 1) /= number_rows).OR.(SIZE(DATA_,DIM = 2) /= number_fields)) then
if (ALLOCATED(DATA_)) DEALLOCATE(DATA_)
ALLOCATE(DATA_(number_rows,number_fields))
end if
end if
a = 0
do
a = a + 1
status = mysql_fetch_row_start(row, res)
do while (status /= 0)
rsv = wait_for_mysql(mysql_variable,status)
status = mysql_fetch_row_cont(row, res, status)
end do
if (.not.c_associated(row)) exit
call C_F_POINTER(row,fields_ptr_array,[number_fields])
field_length_array = mysql_fetch_lengths(res)
call C_F_POINTER(field_length_array,stringlen,[number_fields])
do i = 1 , number_fields
call C_F_POINTER(fields_ptr_array(i),row_variables,[stringlen(i)])
call c_f_str_chars_mariadblib(row_variables,row_variables_f)
field_value(i)%text = TRIM(ADJUSTL(row_variables_f))
if (PRESENT(DATA_)) then
DATA_(a,i)%text = TRIM(ADJUSTL(row_variables_f))
end if
end do
WRITE(*,'(*(A50,5x))') (field_value(i)%text, i = 1,number_fields)
end do
if (mysql_errno(mysql_variable) /= 0) print *, "Got error while retrieving rows"
call mysql_free_result(res)
res_ptr = c_null_ptr
CALL mysql_close(mysql_variable)
mysql_ptr = c_null_ptr
call mysql_library_end
END SUBROUTINE EXECUTE_COMMAND_DATABASE
FUNCTION cchar(fstr)
implicit none
CHARACTER(len = *) :: fstr
CHARACTER(c_char),DIMENSION(len(fstr)+1) :: cchar
INTEGER :: i
do i = 1, len(fstr)+1
if (i <= len(fstr)) then
cchar(i) = fstr(i:i)
else
cchar(i) = c_null_char
end if
end do
END FUNCTION cchar
SUBROUTINE RUN(this,comm)
implicit none
CLASS(DATABASE_CONNECT_INFO) :: this
CHARACTER(len = *) :: comm
! INTEGER :: a, i
WRITE(*,*) comm
if ((this%PASSWORD /= "").AND.(ALLOCATED(this%PASSWORD))) then
CALL EXECUTE_COMMAND_DATABASE(comm,this%IP_ADDRESS,&
this%USERNAME,this%PASSWORD,this%PORT_ID,this%DATA)
else
CALL EXECUTE_COMMAND_DATABASE(comm,this%IP_ADDRESS,&
this%USERNAME,port_id = this%PORT_ID,DATA_=this%DATA)
end if
! do a = 1,size(this%DATA,1)
! WRITE(*,'(*(A50,5x))') (this%DATA(a,i)%text, i = 1,size(this%DATA,2))
! end do
END SUBROUTINE RUN
subroutine c_f_str_chars_mariadblib(c_str, f_str)
CHARACTER(len=1, kind=c_char), intent(in) :: c_str(*)
CHARACTER(len=*), intent(out) :: f_str
INTEGER :: i
i = 1
do while (c_str(i) /= c_null_char .and. i <= len(f_str))
f_str(i:i) = c_str(i)
i = i + 1
end do
if (i < len(f_str)) f_str(i:) = ' '
end subroutine c_f_str_chars_mariadblib
end module mariadb_fortran