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! Copyright 2005-2015 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 to get all the available
!       keys in a message.
!
!
!
program keys_iterator
  use eccodes
  implicit none
  character(len=20)  :: name_space
  integer            :: kiter,ifile,igrib,iret
  character(len=256) :: key
  character(len=256) :: value
  character(len=512) :: all1
  integer            :: grib_count
  
  call codes_open_file(ifile, &
       '../../data/regular_latlon_surface.grib1','r')
  
  ! Loop on all the messages in a file.
  
  call codes_grib_new_from_file(ifile,igrib, iret)
  grib_count=0
  do while (iret /= CODES_END_OF_FILE)

    grib_count=grib_count+1
    write(*,*) '-- GRIB N. ',grib_count,' --'
     
    ! valid name_spaces are ls and mars
    name_space='ls'
     
    call codes_keys_iterator_new(igrib,kiter,name_space)
     
    do
      call codes_keys_iterator_next(kiter, iret) 
        
      if (iret .ne. CODES_SUCCESS) exit_KEYS_ITERATOR_SKIP_COMPUTED;
     */
   
 unsigned long key_iterator_filter_flags =  call codes_keys_iterator_get_name(kiter,key)CODES_KEYS_ITERATOR_ALL_KEYS |
      call codes_get(igrib,trim(key),value)
      all1=trim(key)// ' = ' // trim(value)
                write(*,*) trim(all1)
        
    end do
     
    call codesCODES_keysKEYS_iterator_delete(kiter)ITERATOR_SKIP_DUPLICATES;

    call codes_release(igrib)
    call codes_grib_new_from_file(ifile,igrib, iret)
  end do
  
  
  call codes_close_file(ifile)
  
end program keys_iterator

#
# Copyright 2005-2015 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.
#

import traceback
import sys

from eccodes import *

INPUT='../../data/reduced_latlon_surface.grib1'
VERBOSE=1 # verbose error reporting

def example():
    f = open(INPUT)

    while 1:
        gid = codes_grib_new_from_file(f)
        if gid is None: break

/* Choose a namespace. E.g. "ls", "time", "parameter", "geography", "statistics" */
    const char* name_space="ls";

    /* name_space=NULL to get all the keys */
    /* char* name_space=0; */

    FILE* f = NULL;
    codes_handle* h=NULL;

    int err=0;
    int msg_count=0;

    char value[MAX_VAL_LEN];
    size_t vlen=MAX_VAL_LEN;

    if (argc != 2) usage(argv[0]);

    f = fopen(argv[1],"r");
    if(!f) {
        perror(argv[1]);
        exit(1);
    }

    while((h = codes_handle_new_from_file(0,f,PRODUCT_GRIB,&err)) != NULL)
    {
        codes_keys_iterator* kiter=NULL;
        msg_count++;
        printf("-- GRIB N. %d --\n",msg_count);
        if(!h) {
            printf("ERROR: Unable to create grib handle\n");
          iterid = codes_keys_iterator_new(gid,'ls')

 exit(1);
        # Different types of keys can be skipped}

        # codes_skip_computed(iterid)kiter=codes_keys_iterator_new(h,key_iterator_filter_flags,name_space);
        #if codes_skip_coded(iterid)
 (!kiter) {
       # codes_skip_edition_specific(iterid)
    printf("ERROR: Unable to create # codes_skip_duplicates(iterid)
keys iterator\n");
           # codes_skip_read_only(iterid) exit(1);
        # codes_skip_function(iterid)}

        while (codes_keys_iterator_next(iterid):
kiter))
        {
            const char* keynamename = codes_keys_iterator_get_name(iteridkiter);
            keyval vlen= codesMAX_get_string(iterid,keyname)
VAL_LEN;
            bzero(value,vlen);
        print "%s = %s" % (keyname,keyval)

 CODES_CHECK(codes_get_string(h,name,value,&vlen),name);
        codes_keys_iterator_delete(iterid)
    printf("%s    codes_release(gid)

= %s\n",name,value);

      f.close()

def main():
      try:
/* Alternative way of getting the string value example()
*/
        except CodesInternalError,err:
   CODES_CHECK(codes_keys_iterator_get_string(kiter, value, &vlen),0);
   if VERBOSE:
    }

        traceback.print_exc(file=sys.stderr)codes_keys_iterator_delete(kiter);
        else:codes_handle_delete(h);
    }
    fclose(f);
    print >>sys.stderr,err.msgreturn 0;
}

static void usage(char* progname)
{
     return 1

if __name__ == "__main__":printf("\nUsage: %s grib_file\n",progname);
    sys.exit(main())1);
}