Description
This example shows: how to get an array of strings from a BUFR message.
Source code
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language | none |
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title | bufr_get_string_array.f90 |
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linenumbers | false |
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| !
! (C) Copyright 2005-2016 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.
!
!
! FOTRANFORTRAN 90 Implementation: bufr_get_string_array
!
! 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)
! unpackUnpack the data values
call codes_set(ibufr,'unpack',1)
! getGet the width of the strings which is tethe same for all of them
call codes_get(ibufr,'stationOrSiteName->width',strsize)
! theThe 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
! allocatingAllocating the array of strings to be passed to codes_get_string_array is mandatory
call codes_get_size(ibufr,'stationOrSiteName',n)
allocate(stationOrSiteName(n))
! passingPassing 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 Remember to deallocate
deallocate(stationOrSiteName)
! releaseRelease memory associated with bufr handle
! ibufr won't be accessible after anythis
more fromcall codes_release on(ibufr)
! Close file
call codes_release(ibufr)
! close file
call codes_close_file(ifile)
end program bufr_get_string_array
_close_file(ifile)
end program bufr_get_string_array
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language | cpp |
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title | bufr_get_string_array.c |
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linenumbers | false |
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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.
*/
/*
* C Implementation: bufr_get_string_array
*
* Description: how to get an array of strings from a BUFR message.
*
*/
#include "eccodes.h"
int main(int argc,char* argv[])
{
codes_handle* h=NULL;
size_t i=0, size = 0;
size_t len=0;
int err=0, cnt=0;
char** strArray = NULL; /* array of strings */
const char* infile = "../../data/bufr/pgps_110.bufr";
FILE* in = fopen(infile,"rb");
if (!in) {
printf("ERROR: unable to open file %s\n", infile);
return 1;
}
/* loop over the messages in the bufr file */
while ((h = codes_handle_new_from_file(NULL, in, PRODUCT_BUFR, &err)) != NULL || err != CODES_SUCCESS)
{
if (h == NULL) {
printf("Error: unable to create handle for message %d\n",cnt);
cnt++;
continue;
}
/* we need to instruct ecCodes to expand the descriptors
i.e. unpack the data values */
CODES_CHECK(codes_set_long(h, "unpack", 1),0);
/* get the size and allocate memory */
CODES_CHECK(codes_get_size(h, "stationOrSiteName", &len), 0);
strArray = (char**)malloc(len * sizeof(char*));
if (!strArray) {
printf("Error: Could not allocate memory\n");
return 1;
}
CODES_CHECK(codes_get_string_array(h, "stationOrSiteName", strArray, &size), 0);
for(i=0; i<size; ++i) {
printf("%s\n", strArray[i]);
}
printf("stationOrSiteName string array size = %lu\n", (unsigned long)size);
/* free allocated arrays */
for(i=0; i<size; ++i) free( strArray[i] );
free(strArray);
/* delete handle */
codes_handle_delete(h);
cnt++;
}
fclose(in);
return 0;
}
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