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d953899559
re: https://github.com/zarr-developers/zarr-specs/issues/41 After discussions with the Zarr community, it was decided to convert to a new representation of the NCZarr meta-data extensions: version 2. These extensions store information necessary to mapping the Zarr data model to the netcdf-4 data model. The basic change is to remove the NCZarr specific objects: .nczarr, .nczgroup, .nczarray, and .nczattr. The contents of these objects is moved into the corresponding existing Zarr objects as special keys. The mapping is as follows: * ''.nczarr'' => ''/.zgroup/_NCZARR_SUPERBLOCK_'' * ''.nczgroup => ''.zgroup/_NCZARR_GROUP_'' * ''.nczarray => ''.zarray/_NCZARR_ARRAY_'' * ''.nczattr => ''.zattr/_NCZARR_ATTR_'' Backward compatibility is maintained by looking for the object ''/.nczarr'' and if found, then assuming that the dataset is in the older version 1 format. This compatibility only supports reading of such version 1 datasets. Documentation and test cases are also added. Misc. Other Changes: 1. The json parsing code was added to the general library instead of nczarr only (ncjson.c, ncjson.h). 2. Improved support for different platform paths by allowing conversion to a single common path representation. 3. Add some new error codes. 4. Modify nccopy usage to mention the new chunking specification.
63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
/*
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* Copyright 2018, University Corporation for Atmospheric Research
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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*/
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/* Parse input to see if it looks like json.
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Output 1 or 0.
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*/
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#include "config.h"
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#include "stdlib.h"
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#include "stdio.h"
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "netcdf.h"
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#include "nclist.h"
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#include "ncjson.h"
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#define MAXREAD 8192
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int
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main(int argc, char** argv)
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{
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int stat = NC_NOERR;
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char text[MAXREAD+1];
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NCjson* json = NULL;
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int i, red;
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FILE* f = NULL;
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if(argc > 1) {
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/* use argv[1] as input */
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f = fopen(argv[1],"r");
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if(f == NULL) {fprintf(stderr,"No such file: %s\n",argv[1]); exit(1);}
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} else
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f = stdin;
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/* Read json from stdin */
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for(i=0;;i++) {
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unsigned char c;
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red = fread(&c, 1, 1, f);
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if(red != 1) break;
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if(i < MAXREAD) text[i] = (char)c;
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}
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if(i >= MAXREAD) {
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fprintf(stderr,"Input too long\n");
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exit(1);
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}
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text[i] = '\0';
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if(i == 0) {
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stat = NC_EEMPTY;
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} else {
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stat = NCJparse(text,0,&json);
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NCJreclaim(json);
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}
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printf("%d",(stat==NC_NOERR?1:0)); /* parse success|failure */
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if(f != stdin) fclose(f);
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return 0;
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}
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