1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
! (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
|
