mirror of https://github.com/ecmwf/eccodes.git
55 lines
1.5 KiB
Fortran
55 lines
1.5 KiB
Fortran
! Copyright 2005-2012 ECMWF.
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!
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! This software is licensed under the terms of the Apache Licence Version 2.0
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! which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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!
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! In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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! virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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!
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!
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!
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! Description: how to copy a message in memory
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!
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!
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!
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program copy
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use grib_api
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implicit none
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integer :: err, centre
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integer(kind=kindOfSize) :: byte_size
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integer :: infile,outfile
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integer :: igrib_in,iret
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integer :: igrib_out
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character(len=1), dimension(:), allocatable :: message
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call grib_open_file(infile,'../../data/constant_field.grib1','r')
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call grib_open_file(outfile,'out.grib1','w')
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! a new grib message is loaded from file
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! igrib is the grib id to be used in subsequent calls
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call grib_new_from_file(infile,igrib_in)
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call grib_get_message_size(igrib_in, byte_size)
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allocate(message(byte_size), stat=err)
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call grib_copy_message(igrib_in,message)
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call grib_new_from_message(igrib_out, message)
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centre=80
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call grib_set(igrib_out,"centre",centre)
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! write messages to a file
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call grib_write(igrib_out,outfile)
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call grib_release(igrib_out)
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call grib_release(igrib_in)
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call grib_close_file(infile)
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call grib_close_file(outfile)
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deallocate(message)
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end program copy
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