mirror of https://github.com/ecmwf/eccodes.git
83 lines
2.4 KiB
Fortran
83 lines
2.4 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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!
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! Description: How to use keys_iterator functions and the
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! codes_bufr_keys_iterator structure to get all the available
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! keys in a BUFR message.
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!
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program bufr_keys_iterator
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use eccodes
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implicit none
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integer :: ifile
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integer :: iret
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integer :: ibufr
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integer :: count = 0
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character(len=256) :: key
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integer :: kiter
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integer :: subset = 1
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call codes_open_file(ifile, '../../data/bufr/syno_1.bufr', 'r')
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! The first BUFR message is loaded from file,
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! ibufr is the BUFR id to be used in subsequent calls
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call codes_bufr_new_from_file(ifile, ibufr, iret)
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do while (iret /= CODES_END_OF_FILE)
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! Get and print some keys from the BUFR header
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write (*, *) 'message: ', count
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! We need to instruct ecCodes to expand all the descriptors
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! i.e. unpack the data values
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call codes_set(ibufr, "unpack", 1);
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! Create BUFR keys iterator
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call codes_bufr_keys_iterator_new(ibufr, kiter, iret)
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if (iret .ne. 0) then
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write (*, *) 'ERROR: Unable to create BUFR keys iterator'
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call exit(1)
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end if
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! Get first key
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call codes_bufr_keys_iterator_next(kiter, iret)
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! Loop over keys
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do while (iret == CODES_SUCCESS)
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! Print key name
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call codes_bufr_keys_iterator_get_name(kiter, key)
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if (key == 'subsetNumber') then
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write (*, *) ' Subset ', subset
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subset = subset + 1
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else
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write (*, *) ' ', trim(key)
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end if
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! Get next key
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call codes_bufr_keys_iterator_next(kiter, iret)
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end do
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! Delete key iterator
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call codes_bufr_keys_iterator_delete(kiter)
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! Release the BUFR message
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call codes_release(ibufr)
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! Load the next BUFR message
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call codes_bufr_new_from_file(ifile, ibufr, iret)
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count = count + 1
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end do
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! Close file
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call codes_close_file(ifile)
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end program bufr_keys_iterator
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