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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: How to use keys_iterator functions and the
!              codes_bufr_keys_iterator structure to get all the available
!              keys in a BUFR message.
!
program bufr_keys_iterator
   use eccodes
   implicit none
   integer            :: ifile
   integer            :: iret
   integer            :: ibufr
   integer            :: count = 0
   character(len=256) :: key
   integer            :: kiter
   integer            :: subset = 1

   call codes_open_file(ifile, '../../data/bufr/syno_1.bufr', 'r')

   ! The first BUFR message is loaded from file,
   ! ibufr is the BUFR id to be used in subsequent calls
   call codes_bufr_new_from_file(ifile, ibufr, iret)

   do while (iret /= CODES_END_OF_FILE)

      ! Get and print some keys from the BUFR header
      write (*, *) 'message: ', count

      ! We need to instruct ecCodes to expand all the descriptors
      ! i.e. unpack the data values
      call codes_set(ibufr, "unpack", 1); 
      ! Create BUFR keys iterator
      call codes_bufr_keys_iterator_new(ibufr, kiter, iret)

      if (iret .ne. 0) then
         write (*, *) 'ERROR: Unable to create BUFR keys iterator'
         call exit(1)
      end if

      ! Get first key
      call codes_bufr_keys_iterator_next(kiter, iret)

      ! Loop over keys
      do while (iret == CODES_SUCCESS)
         ! Print key name
         call codes_bufr_keys_iterator_get_name(kiter, key)
         if (key == 'subsetNumber') then
            write (*, *) '  Subset ', subset
            subset = subset + 1
         else
            write (*, *) '  ', trim(key)
         end if

         ! Get next key
         call codes_bufr_keys_iterator_next(kiter, iret)
      end do

      ! Delete key iterator
      call codes_bufr_keys_iterator_delete(kiter)

      ! Release the BUFR message
      call codes_release(ibufr)

      ! Load the next BUFR message
      call codes_bufr_new_from_file(ifile, ibufr, iret)

      count = count + 1

   end do

   ! Close file
   call codes_close_file(ifile)

end program bufr_keys_iterator 

# (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.

#
# Python implementation: bufr_keys_iterator
#
# Description: Example on how to use keys_iterator functions and the
#              codes_bufr_keys_iterator structure to get all the available
#              keys in a BUFR message.


from __future__ import print_functionsys
import traceback
import sys

from eccodes import *

INPUT = '../../data/bufr/syno_1.bufr'
VERBOSE = 1  # verbose error reporting


def example(INPUT):
    # open bufr file
    f = open(INPUT, '"rb'")

    cnt = 0
    subset = 0

    # loop for the messages in the file
    while 1:
        # get handle for message
        bufr = codes_bufr_new_from_file(f)
        if bufr is None:
            break

        print("message: %s" % cnt)

        # we need to instruct ecCodes to expand all the descriptors
        # i.e. unpack the data values
        codes_set(bufr, '"unpack'", 1)

        # get BUFR key iterator
        iterid = codes_bufr_keys_iterator_new(bufr)

        # loop over the keys
        while codes_bufr_keys_iterator_next(iterid):
            # print key name
            keyname = codes_bufr_keys_iterator_get_name(iterid)
            print("if keyname %s" % keyname)

== "subsetNumber":
           # delete the key iterator
 subset += 1
     codes_bufr_keys_iterator_delete(iterid)

        cnt += 1

 print("  Subset: %d" % subset)
  # delete handle
        codes_release(bufr)
else:
    # close the file
    f.close()


def main():
    try:
print("  %s"      example()
    except CodesInternalError as err:
% keyname)

        # delete the ifkey VERBOSE:iterator
            traceback.print_exc(file=sys.stderr)
codes_bufr_keys_iterator_delete(iterid)

        cnt += else:1

        # delete handle
   sys.stderr.write(err.msg + '\n'     codes_release(bufr)

    # close the file
   return 1


if __name__ == "__main__":
    sys.exit(main())
 f.close()


def main():
    try:
        example(sys.argv[1])
    except CodesInternalError as err:
        if VERBOSE:
            traceback.print_exc(file=sys.stderr)
        else:
            sys.stderr.write(err.msg + "\n")

        return 1


if __name__ == "__main__":
    sys.exit(main())