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/* This is part of the netCDF package.
Copyright 2018 University Corporation for Atmospheric Research/Unidata.
See COPYRIGHT file for conditions of use.
This is a very simple example which writes a netCDF file with
Unicode names encoded with UTF-8.
$Id: tst_unicode.c,v 1.12 2008/10/20 01:48:08 ed Exp $
*/
#include <nc_tests.h>
#include "err_macros.h"
#include <stdlib.h>
#include <stdio.h>
#include <netcdf.h>
/* The data file we will create. */
#define FILE7_NAME "tst_unicode.nc"
#define UNITS "units"
#define NDIMS 1
#define UTF8_BYTES 18
int
main(int argc, char **argv)
{
int ncid, dimid, varid;
int dimids[NDIMS];
unsigned char name_utf8[] = {
0xCE, 0x9A, /* GREEK CAPITAL LETTER KAPPA : 2-bytes utf8 */
0xCE, 0xB1, /* GREEK SMALL LETTER LAMBDA : 2-bytes utf8 */
0xCE, 0xBB, /* GREEK SMALL LETTER ALPHA : 2-bytes utf8 */
0xCE, 0xB7, /* GREEK SMALL LETTER ETA : 2-bytes utf8 */
0xCE, 0xBC, /* GREEK SMALL LETTER MU : 2-bytes utf8 */
0xE1, 0xBD, 0xB3, /* GREEK SMALL LETTER EPSILON
WITH TONOS : 3-bytes utf8 */
0xCF, 0x81, /* GREEK SMALL LETTER RHO : 2-bytes utf8 */
0xCE, 0xB1, 0x00 /* GREEK SMALL LETTER ALPHA : 2-bytes utf8 */
};
/* Name used for dimension, variable, and attribute value */
#define UNAME ((char *) name_utf8)
#define UNAMELEN (sizeof name_utf8)
char name_in[UNAMELEN + 1], strings_in[UNAMELEN + 1];
nc_type att_type;
size_t att_len;
printf("\n*** Testing UTF-8.\n");
printf("*** creating UTF-8 test file %s...", FILE7_NAME);
if (nc_create(FILE7_NAME, NC_NETCDF4, &ncid)) ERR;
/* Define dimension with Unicode UTF-8 encoded name */
if (nc_def_dim(ncid, UNAME, UTF8_BYTES, &dimid)) ERR;
dimids[0] = dimid;
/* Define variable with same name */
if (nc_def_var(ncid, UNAME, NC_CHAR, NDIMS, dimids, &varid)) ERR;
/* Create string attribute with same value */
if (nc_put_att_text(ncid, varid, UNITS, UNAMELEN, UNAME)) ERR;
if (nc_enddef(ncid)) ERR;
/* Write string data, UTF-8 encoded, to the file */
if (nc_put_var_text(ncid, varid, UNAME)) ERR;
if (nc_close(ncid)) ERR;
/* Check it out. */
/* Reopen the file. */
if (nc_open(FILE7_NAME, NC_NOWRITE, &ncid)) ERR;
if (nc_inq_varid(ncid, UNAME, &varid)) ERR;
if (nc_inq_varname(ncid, varid, name_in)) ERR;
{
/* Note, name was normalized before storing, so retrieved name
won't match original unnormalized name. Check that we get
normalized version, instead. */
/* NFC normalized UTF-8 for Unicode 8-character "Hello" in Greek */
unsigned char norm_utf8[] = {
0xCE, 0x9A, /* GREEK CAPITAL LETTER KAPPA : 2-bytes utf8 */
0xCE, 0xB1, /* GREEK SMALL LETTER LAMBDA : 2-bytes utf8 */
0xCE, 0xBB, /* GREEK SMALL LETTER ALPHA : 2-bytes utf8 */
0xCE, 0xB7, /* GREEK SMALL LETTER ETA : 2-bytes utf8 */
0xCE, 0xBC, /* GREEK SMALL LETTER MU : 2-bytes utf8 */
0xCE, 0xAD, /* GREEK SMALL LETTER EPSILON WITH TONOS
: 2-bytes utf8 */
0xCF, 0x81, /* GREEK SMALL LETTER RHO : 2-bytes utf8 */
0xCE, 0xB1, /* GREEK SMALL LETTER ALPHA : 2-bytes utf8 */
0x00
};
#define NNAME ((char *) norm_utf8)
#define NNAMELEN (sizeof norm_utf8)
if (strncmp(NNAME, name_in, NNAMELEN) != 0) ERR;
}
if (nc_inq_att(ncid, varid, UNITS, &att_type, &att_len)) ERR;
if (att_type != NC_CHAR || att_len != UNAMELEN) ERR;
if (nc_get_att_text(ncid, varid, UNITS, strings_in)) ERR;
strings_in[att_len] = '\0'; /* null terminate, because nc_get_att_text doesn't */
if (strncmp(UNAME, strings_in, UNAMELEN) != 0) ERR;
if (nc_close(ncid)) ERR;
SUMMARIZE_ERR;
FINAL_RESULTS;
}
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