mirror of https://github.com/ecmwf/eccodes.git
79 lines
2.1 KiB
Fortran
79 lines
2.1 KiB
Fortran
C Copyright 2005-2016 ECMWF.
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C
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C This software is licensed under the terms of the Apache Licence Version 2.0
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C which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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C
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C In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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C virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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C
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C
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C
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C Fortran 77 Implementation: keys_iterator
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C
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C Description:
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C Example on how to use keys_iterator functions and the
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C grib_keys_iterator structure to get all the available
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C keys in a message.
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C
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C
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C
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C
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program keys_iterator
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implicit none
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include 'grib_api_fortran.h'
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character*20 name_space
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integer kiter,ifile,igrib,iret
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character*256 key
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character*256 value
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character*512 all
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integer len,strlen
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integer grib_count
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len=256
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ifile=5
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call grib_check(grib_open_file(ifile,
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X'../data/regular_latlon_surface.grib1','r'))
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C Loop on all the messages in a file.
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10 iret=grib_new_from_file(ifile,igrib)
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if (igrib .eq. -1 ) then
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if (iret .ne.0) then
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call grib_check(iret)
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endif
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stop
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endif
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grib_count=grib_count+1
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write(*,*) '-- GRIB N. ',grib_count,' --'
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C valid name_spaces are ls and mars
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name_space='ls'
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C name_space=' ' to get all the keys */
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C name_space=' '
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strlen = index(name_space,' ') - 1
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call grib_check(
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Xgrib_keys_iterator_new(igrib,kiter,name_space(1:strlen)))
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C call grib_check(grib_keys_iterator_skip_read_only(kiter))
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C call grib_check(grib_keys_iterator_skip_function(kiter))
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C call grib_check(grib_keys_iterator_skip_not_coded(kiter))
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20 if (grib_keys_iterator_next(kiter) .ne. 1) goto 10
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call grib_check(grib_keys_iterator_get_name(kiter,key,strlen))
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call grib_check(grib_get_string(igrib,key(1:strlen),value))
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all=key// ' = ' // value
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write(*,*) all
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goto 20
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call grib_check(grib_keys_iterator_delete(kiter))
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call grib_check(grib_release(igrib))
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call grib_check(grib_close_file(ifile))
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end
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