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! (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 read_from_file
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
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_check(iret,'read_from_file','')
endif
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
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_check(iret,'read_from_file','')
endif
call codes_close_file(ifile)
end subroutine read_using_integer
!======================================
end program
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