mirror of https://github.com/ecmwf/eccodes.git
104 lines
3.4 KiB
Fortran
104 lines
3.4 KiB
Fortran
! (C) Copyright 2005- ECMWF.
|
|
!
|
|
! This software is licensed under the terms of the Apache Licence Version 2.0
|
|
! which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
|
|
!
|
|
! In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
|
|
! virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
|
|
!
|
|
! Get message lengths using two different interfaces
|
|
! See GRIB-292
|
|
!
|
|
program grib_read_from_file_example
|
|
use eccodes
|
|
implicit none
|
|
character(len=32) :: input_grib_file
|
|
integer, dimension(26) :: message_lengths ! expected message lengths
|
|
|
|
input_grib_file = '../../data/v.grib2'
|
|
message_lengths = (/95917, 96963, 97308, 97386, 97215, 97440, 98451, 98629, 98448, &
|
|
99186, 97517, 97466, 99307, 98460, 101491, 99361, 100292, 96838, &
|
|
91093, 83247, 78244, 74872, 72663, 69305, 69881, 68572/)
|
|
|
|
! get the GRIB message length using two different interfaces
|
|
call read_using_size_t()
|
|
call read_using_integer()
|
|
print *, 'Passed'
|
|
|
|
contains
|
|
!======================================
|
|
subroutine read_using_size_t
|
|
implicit none
|
|
integer :: size, intsize
|
|
parameter(intsize=100000, size=intsize*4)
|
|
integer :: ifile
|
|
integer :: iret
|
|
integer :: count1 = 0
|
|
integer(kind=4), dimension(intsize) :: buffer
|
|
integer(kind=kindOfSize_t) :: len1 ! For large messages
|
|
character(len=128) :: error_message
|
|
|
|
ifile = 5
|
|
call codes_open_file(ifile, input_grib_file, 'r')
|
|
|
|
len1 = size
|
|
call codes_read_from_file(ifile, buffer, len1, iret)
|
|
|
|
do while (iret == CODES_SUCCESS)
|
|
count1 = count1 + 1
|
|
if (len1 /= message_lengths(count1)) then
|
|
write (*, '(a,i3,a,i8,a,i8)') 'Error: Message #', count1, ' length=', len1, '. Expected=', message_lengths(count1)
|
|
stop
|
|
end if
|
|
len1 = size
|
|
call codes_read_from_file(ifile, buffer, len1, iret)
|
|
end do
|
|
|
|
if (iret /= CODES_END_OF_FILE) then
|
|
call codes_get_error_string(iret, error_message)
|
|
write (*, *) 'error message: ', error_message
|
|
call codes_check(iret, 'grib_read_from_file', '')
|
|
end if
|
|
call codes_close_file(ifile)
|
|
|
|
end subroutine read_using_size_t
|
|
|
|
!======================================
|
|
subroutine read_using_integer
|
|
implicit none
|
|
integer :: size, intsize
|
|
parameter(intsize=100000, size=intsize*4)
|
|
integer :: ifile
|
|
integer :: iret
|
|
integer :: count1 = 0
|
|
integer(kind=4), dimension(intsize) :: buffer
|
|
integer :: len1
|
|
character(len=128) :: error_message
|
|
|
|
ifile = 5
|
|
call codes_open_file(ifile, input_grib_file, 'r')
|
|
|
|
len1 = size
|
|
call codes_read_from_file(ifile, buffer, len1, iret)
|
|
|
|
do while (iret == CODES_SUCCESS)
|
|
count1 = count1 + 1
|
|
if (len1 /= message_lengths(count1)) then
|
|
write (*, '(a,i3,a,i8,a,i8)') 'Error: Message #', count1, ' length=', len1, '. Expected=', message_lengths(count1)
|
|
stop
|
|
end if
|
|
len1 = size
|
|
call codes_read_from_file(ifile, buffer, len1, iret)
|
|
end do
|
|
|
|
if (iret /= CODES_END_OF_FILE) then
|
|
call codes_get_error_string(iret, error_message)
|
|
write (*, *) 'error message: ', error_message
|
|
call codes_check(iret, 'grib_read_from_file', '')
|
|
end if
|
|
call codes_close_file(ifile)
|
|
|
|
end subroutine read_using_integer
|
|
!======================================
|
|
end program
|