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