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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:
! Example on how to use keys_iterator functions and the
! codes_keys_iterator structure to get all the available
! keys in a message.
!
!
program keys_iterator
use eccodes
implicit none
integer :: kiter, ifile, igrib, iret
character(len=256) :: key
character(len=256) :: value
character(len=2048) :: all
integer :: len
integer :: grib_count
len = 256
ifile = 5
call codes_open_file(ifile, &
'../../data/regular_latlon_surface.grib1', 'r')
grib_count = 0
! Loop on all the messages in a file.
call codes_grib_new_from_file(ifile, igrib)
do while (igrib .ne. -1)
grib_count = grib_count + 1
write (*, '("-- GRIB N.",I4," --")') grib_count
! valid name_spaces are ls and mars
call codes_keys_iterator_new(igrib, kiter, 'ls')
if (kiter .eq. -1) then
print *, 'invalid key iterator'
end if
do
call codes_keys_iterator_next(kiter, iret)
if (iret .ne. CODES_SUCCESS) exit
call codes_keys_iterator_get_name(kiter, key)
call codes_get(igrib, key, value)
all = '|'//trim(key)//'|'//' = '//'|'//trim(value)//'|'
write (*, *) trim(all)
end do
call codes_keys_iterator_delete(kiter)
call codes_release(igrib)
call codes_grib_new_from_file(ifile, igrib, iret)
end do
call codes_close_file(ifile)
end program keys_iterator
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