mirror of https://github.com/ecmwf/eccodes.git
64 lines
1.6 KiB
Fortran
64 lines
1.6 KiB
Fortran
! (C) Copyright 2005- 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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! Description:
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! How to use keys_iterator to get all the available
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! keys in a GRIB message.
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!
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!
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!
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program keys_iterator
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use eccodes
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implicit none
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character(len=20) :: name_space
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integer :: kiter,ifile,igrib,iret
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character(len=256) :: key
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character(len=256) :: value
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character(len=512) :: all1
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integer :: grib_count
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call codes_open_file(ifile, &
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'../../data/regular_latlon_surface.grib1','r')
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! Loop on all the messages in a file.
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call codes_grib_new_from_file(ifile,igrib, iret)
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grib_count=0
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do while (iret /= CODES_END_OF_FILE)
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grib_count=grib_count+1
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write(*,*) '-- GRIB N. ',grib_count,' --'
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! valid name_spaces are ls and mars
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name_space='ls'
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call codes_keys_iterator_new(igrib,kiter,name_space)
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do
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call codes_keys_iterator_next(kiter, iret)
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if (iret .ne. CODES_SUCCESS) exit !terminate the loop
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call codes_keys_iterator_get_name(kiter,key)
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call codes_get(igrib,trim(key),value)
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all1=trim(key)// ' = ' // trim(value)
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write(*,*) trim(all1)
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end do
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call codes_keys_iterator_delete(kiter)
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call codes_release(igrib)
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call codes_grib_new_from_file(ifile,igrib, iret)
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end do
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call codes_close_file(ifile)
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end program keys_iterator
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