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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 copy a GRIB message in memory
!
!
program copy
use eccodes
implicit none
integer :: err, centre
integer(kind=kindOfSize) :: byte_size
integer :: infile, outfile
integer :: igrib_in
integer :: igrib_out
character(len=1), dimension(:), allocatable :: message
character(len=32) :: product_kind
call codes_open_file(infile, '../../data/constant_field.grib1', 'r')
call codes_open_file(outfile, 'out.copy.grib1', 'W')
! A new GRIB message is loaded from file
! igrib_in is the GRIB id to be used in subsequent calls
call codes_grib_new_from_file(infile, igrib_in)
call codes_get_message_size(igrib_in, byte_size)
allocate (message(byte_size), stat=err)
call codes_copy_message(igrib_in, message)
call codes_new_from_message(igrib_out, message)
call codes_get(igrib_out, 'kindOfProduct', product_kind)
write (*, *) 'kindOfProduct=', product_kind
centre = 80
call codes_set(igrib_out, 'centre', centre)
! Write message to a file
call codes_write(igrib_out, outfile)
call codes_release(igrib_out)
call codes_release(igrib_in)
call codes_close_file(infile)
call codes_close_file(outfile)
deallocate (message)
end program copy
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