eccodes/examples/F90/bufr_get_string_array.f90

! (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 get an array of strings from a BUFR message.

program bufr_get_string_array
   use eccodes
   implicit none
   integer            :: ifile
   integer            :: iret, i, n
   integer            :: ibufr
   integer            :: strsize
   integer, parameter  :: max_strsize = 20
   character(len=max_strsize), dimension(:), allocatable   :: stationOrSiteName

   call codes_open_file(ifile, '../../data/bufr/pgps_110.bufr', 'r')

   call codes_bufr_new_from_file(ifile, ibufr, iret)

   ! Unpack the data values
   call codes_set(ibufr, 'unpack', 1)

   ! Get the width of the strings which is the same for all of them
   call codes_get(ibufr, 'stationOrSiteName->width', strsize)

   ! The width is given in bits
   strsize = strsize/8

   ! max_strsize has to be set to a value >= to the size of the strings that we are getting
   ! back from the call to codes_get_string_array
   if (strsize > max_strsize) then
      print *, 'stationOrSiteName array dimension is ', max_strsize, ' and should be ', strsize
      call exit(1)
   end if

   ! Allocating the array of strings to be passed to codes_get_string_array is mandatory
   call codes_get_size(ibufr, 'stationOrSiteName', n)
   allocate (stationOrSiteName(n))

   ! Passing an array of strings stationOrSiteName which must be allocated beforehand
   call codes_get_string_array(ibufr, 'stationOrSiteName', stationOrSiteName)
   do i = 1, n
      write (*, '(A)') trim(stationOrSiteName(i))
   end do

   ! Remember to deallocate
   deallocate (stationOrSiteName)

   ! Release memory associated with bufr handle
   ! ibufr won't be accessible after this
   call codes_release(ibufr)

   ! Close file
   call codes_close_file(ifile)

end program bufr_get_string_array