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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.
!
!
! Description: How to decode GRIB2 multi-field messages.
! Try to turn multi support on and off to
! see the difference. Default is OFF.
! For all the tools (e.g., grib_ls etc) multi support is ON.
!
program multi
use eccodes
implicit none
integer :: iret, counter=0
integer(kind=4) :: step
integer :: ifile, igrib
call codes_open_file(ifile, '../../data/multi_created.grib2', 'r')
! Turn off support for multi-field messages
call codes_grib_multi_support_off()
! Turn on support for multi-field messages
call codes_grib_multi_support_on()
! Loop on all the messages in a file
write (*, *) 'step'
do while (.true.)
call codes_grib_new_from_file(ifile, igrib, iret)
if (iret == CODES_END_OF_FILE) exit
counter = counter + 1
call codes_get(igrib, 'step', step)
write (*, '(i3)') step
end do
call codes_close_file(ifile)
!write(*,*) 'Message count =', counter
end program multi
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