mirror of
https://github.com/Unidata/netcdf-c.git
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06d2fe5b13
As suggested by Ward, I ensured that this PR supports read backward compatibility with old key format. This addition also adds a test case for this. ## Misc. Other Changes * Remove some unused code * Cleanup json error handling * Fix some more unsigned/signed conversions warning
637 lines
17 KiB
C
637 lines
17 KiB
C
/*********************************************************************
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* Copyright 2018, UCAR/Unidata
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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*********************************************************************/
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#include "zincludes.h"
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#include <math.h>
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#ifdef _MSC_VER
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#include <crtdbg.h>
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#endif
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#include "isnan.h"
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/*
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Code taken directly from libdap4/d4cvt.c
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*/
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static const size_t ncz_type_size[NC_MAX_ATOMIC_TYPE+1] = {
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0, /*NC_NAT*/
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sizeof(char), /*NC_BYTE*/
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sizeof(char), /*NC_CHAR*/
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sizeof(short), /*NC_SHORT*/
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sizeof(int), /*NC_INT*/
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sizeof(float), /*NC_FLOAT*/
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sizeof(double), /*NC_DOUBLE*/
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sizeof(unsigned char), /*NC_UBYTE*/
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sizeof(unsigned short), /*NC_USHORT*/
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sizeof(unsigned int), /*NC_UINT*/
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sizeof(long long), /*NC_INT64*/
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sizeof(unsigned long long), /*NC_UINT64*/
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sizeof(char *), /*NC_STRING*/
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};
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/* Forward */
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static int typeid2jtype(nc_type typeid);
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static int naninftest(const char* s, double* dcase, float* fcase);
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#if 0
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/* Convert a JSON value to a struct ZCVT value and also return the type */
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int
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NCZ_string2cvt(char* src, nc_type srctype, struct ZCVT* zcvt, nc_type* typeidp)
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{
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int stat = NC_NOERR;
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nc_type dsttype = NC_NAT;
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assert(zcvt);
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/* Convert to a restricted set of values */
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switch (srctype) {
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case NC_BYTE: {
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zcvt->int64v = (signed long long)(*((signed char*)src));
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dsttype = NC_INT64;
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} break;
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case NC_UBYTE: {
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zcvt->uint64v = (unsigned long long)(*((unsigned char*)src));
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dsttype = NC_UINT64;
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} break;
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case NC_SHORT: {
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zcvt->int64v = (signed long long)(*((signed short*)src));
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dsttype = NC_INT64;
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} break;
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case NC_USHORT: {
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zcvt->uint64v = (unsigned long long)(*((unsigned short*)src));
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dsttype = NC_UINT64;
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} break;
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case NC_INT: {
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zcvt->int64v = (signed long long)(*((signed int*)src));
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dsttype = NC_INT64;
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} break;
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case NC_UINT: {
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zcvt->uint64v = (unsigned long long)(*((unsigned int*)src));
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dsttype = NC_UINT64;
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} break;
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case NC_INT64: {
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zcvt->int64v = (signed long long)(*((signed long long*)src));
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dsttype = NC_INT64;
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} break;
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case NC_UINT64: {
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zcvt->uint64v = (unsigned long long)(*((unsigned long long*)src));
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dsttype = NC_UINT64;
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} break;
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case NC_FLOAT: {
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zcvt->float64v = (double)(*((float*)src));
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dsttype = NC_DOUBLE;
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} break;
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case NC_DOUBLE: {
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dsttype = NC_DOUBLE;
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zcvt->float64v= (double)(*((double*)src));
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} break;
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case NC_STRING: {
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dsttype = NC_STRING;
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zcvt->strv= *((char**)src);
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} break;
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default: stat = NC_EINTERNAL; goto done;
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}
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if(typeidp) *typeidp = dsttype;
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done:
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return stat;
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}
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#endif
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/* Warning: not free returned zcvt.strv; it may point into a string in jsrc */
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int
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NCZ_json2cvt(const NCjson* jsrc, struct ZCVT* zcvt, nc_type* typeidp)
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{
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int stat = NC_NOERR;
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nc_type srctype = NC_NAT;
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double naninf;
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float naninff;
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/* Convert the incoming jsrc to a restricted set of values */
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switch (NCJsort(jsrc)) {
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case NCJ_INT: /* convert to (u)int64 */
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if(NCJstring(jsrc)[0] == '-') {
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if(sscanf(NCJstring(jsrc),"%lld",&zcvt->int64v) != 1)
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{stat = NC_EINVAL; goto done;}
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srctype = NC_INT64;
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} else {
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if(sscanf(NCJstring(jsrc),"%llu",&zcvt->uint64v) != 1)
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{stat = NC_EINVAL; goto done;}
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srctype = NC_UINT64;
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}
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break;
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case NCJ_DOUBLE:
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switch (naninftest(NCJstring(jsrc),&naninf,&naninff)) {
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case NC_NAT:
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if(sscanf(NCJstring(jsrc),"%lg",&zcvt->float64v) != 1)
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{stat = NC_EINVAL; goto done;}
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break;
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default:
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zcvt->float64v = naninf;
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break;
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}
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srctype = NC_DOUBLE;
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break;
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case NCJ_BOOLEAN:
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srctype = NC_UINT64;
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if(strcasecmp(NCJstring(jsrc),"false")==0)
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zcvt->uint64v = 0;
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else
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zcvt->uint64v = 1;
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break;
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case NCJ_STRING:
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srctype = NC_STRING;
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zcvt->strv = NCJstring(jsrc);
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break;
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default: stat = NC_EINTERNAL; goto done;
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}
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if(typeidp) *typeidp = srctype;
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done:
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return stat;
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}
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/* Convert a singleton NCjson value to a memory equivalent value of specified dsttype; */
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int
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NCZ_convert1(const NCjson* jsrc, nc_type dsttype, NCbytes* buf)
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{
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int stat = NC_NOERR;
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nc_type srctype;
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struct ZCVT zcvt = zcvt_empty;
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int outofrange = 0;
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size_t len = 0;
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double naninf;
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float naninff;
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assert(dsttype != NC_NAT && dsttype <= NC_MAX_ATOMIC_TYPE && buf);
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switch (NCJsort(jsrc)) {
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case NCJ_STRING: case NCJ_INT: case NCJ_DOUBLE: case NCJ_BOOLEAN:
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if((stat = NCZ_json2cvt(jsrc,&zcvt,&srctype))) goto done;
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break;
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default: stat = NC_EINVAL; goto done; /* Illegal JSON */
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}
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len = ncz_type_size[dsttype]; /* may change later */
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/* Now, do the down conversion */
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switch (dsttype) {
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case NC_BYTE: {
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signed char c = 0;
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switch (srctype) {
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case NC_DOUBLE:
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zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
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/* fall thru */
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case NC_INT64:
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if(zcvt.int64v < NC_MIN_BYTE || zcvt.int64v > NC_MAX_BYTE) outofrange = 1;
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c = (signed char)zcvt.int64v;
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ncbytesappend(buf,(char)c);
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break;
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case NC_UINT64:
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if(zcvt.uint64v > NC_MAX_BYTE) outofrange = 1;
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c = (signed char)zcvt.uint64v;
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ncbytesappend(buf,(char)c);
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break;
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default: abort();
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}
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} break;
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case NC_UBYTE: {
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unsigned char c = 0;
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switch (srctype) {
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case NC_DOUBLE:
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zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
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/* fall thru */
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case NC_INT64:
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if(zcvt.int64v < 0 || zcvt.int64v > NC_MAX_BYTE) outofrange = 1;
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c = (unsigned char)zcvt.int64v;
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ncbytesappend(buf,(char)c);
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break;
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case NC_UINT64:
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if(zcvt.uint64v > NC_MAX_UBYTE) outofrange = 1;
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c = (unsigned char)zcvt.uint64v;
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ncbytesappend(buf,(char)c);
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break;
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default: abort();
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}
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} break;
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case NC_SHORT: {
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signed short s = 0;
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switch (srctype) {
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case NC_DOUBLE:
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zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
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/* fall thru */
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case NC_INT64:
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if(zcvt.int64v < NC_MIN_SHORT || zcvt.int64v > NC_MAX_SHORT) outofrange = 1;
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s = (signed short)zcvt.int64v;
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ncbytesappendn(buf,(char*)&s,sizeof(s));
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break;
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case NC_UINT64:
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if(zcvt.uint64v > NC_MAX_SHORT) outofrange = 1;
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s = (signed short)zcvt.uint64v;
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ncbytesappendn(buf,(char*)&s,sizeof(s));
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break;
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default: abort();
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}
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} break;
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case NC_USHORT: {
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unsigned short s = 0;
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switch (srctype) {
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case NC_DOUBLE:
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zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
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/* fall thru */
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case NC_INT64:
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if(zcvt.int64v < 0 || zcvt.int64v > NC_MAX_USHORT) outofrange = 1;
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s = (unsigned short)zcvt.int64v;
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ncbytesappendn(buf,(char*)&s,sizeof(s));
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break;
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case NC_UINT64:
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if(zcvt.uint64v > NC_MAX_USHORT) outofrange = 1;
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s = (unsigned short)zcvt.uint64v;
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ncbytesappendn(buf,(char*)&s,sizeof(s));
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break;
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default: abort();
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}
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} break;
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case NC_INT: {
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signed int ii = 0;
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switch (srctype) {
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case NC_DOUBLE:
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zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
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/* fall thru */
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case NC_INT64:
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if(zcvt.int64v < NC_MIN_INT || zcvt.int64v > NC_MAX_INT) outofrange = 1;
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ii = (signed int)zcvt.int64v;
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ncbytesappendn(buf,(char*)&ii,sizeof(ii));
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break;
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case NC_UINT64:
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if(zcvt.uint64v > NC_MAX_INT) outofrange = 1;
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ii = (signed int)zcvt.uint64v;
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ncbytesappendn(buf,(char*)&ii,sizeof(ii));
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break;
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default: abort();
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}
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} break;
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case NC_UINT: {
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unsigned int ii = 0;
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switch (srctype) {
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case NC_DOUBLE:
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zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
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/* fall thru */
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case NC_INT64:
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if(zcvt.int64v < 0 || zcvt.int64v > NC_MAX_UINT) outofrange = 1;
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ii = (unsigned int)zcvt.int64v;
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ncbytesappendn(buf,(char*)&ii,sizeof(ii));
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break;
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case NC_UINT64:
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if(zcvt.uint64v > NC_MAX_UINT) outofrange = 1;
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ii = (unsigned int)zcvt.uint64v;
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ncbytesappendn(buf,(char*)&ii,sizeof(ii));
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break;
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default: abort();
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}
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} break;
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case NC_INT64: {
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signed long long ll = 0;
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switch (srctype) {
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case NC_DOUBLE:
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zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
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/* fall thru */
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case NC_INT64:
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ll = (signed long long)zcvt.int64v;
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ncbytesappendn(buf,(char*)&ll,sizeof(ll));
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break;
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case NC_UINT64:
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if(zcvt.uint64v > NC_MAX_INT64) outofrange = 1;
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ll = (signed long long)zcvt.uint64v;
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ncbytesappendn(buf,(char*)&ll,sizeof(ll));
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break;
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default: abort();
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}
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} break;
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case NC_UINT64: {
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unsigned long long ll = 0;
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switch (srctype) {
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case NC_DOUBLE:
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zcvt.int64v = (signed long long)zcvt.float64v;
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/* fall thru */
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case NC_INT64:
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if(zcvt.int64v < 0) outofrange = 1;
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ll = (unsigned long long)zcvt.int64v;
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ncbytesappendn(buf,(char*)&ll,sizeof(ll));
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break;
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case NC_UINT64:
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ll = (unsigned long long)zcvt.uint64v;
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ncbytesappendn(buf,(char*)&ll,sizeof(ll));
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break;
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default: abort();
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}
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} break;
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case NC_FLOAT: {
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float f = 0;
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switch (srctype) {
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case NC_DOUBLE:
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f = (float)zcvt.float64v;
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break;
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case NC_INT64:
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f = (float)zcvt.int64v;
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break;
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case NC_UINT64:
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f = (float)zcvt.uint64v;
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break;
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case NC_STRING: /* Detect special constants encoded as strings e.g. "Nan" */
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switch (naninftest(zcvt.strv,&naninf,&naninff)) {
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case NC_NAT: abort();
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case NC_FLOAT:
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case NC_DOUBLE:
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f = naninff; break;
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break;
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}
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break;
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default: abort();
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}
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ncbytesappendn(buf,(char*)&f,sizeof(f));
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} break;
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case NC_DOUBLE: {
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double d = 0;
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switch (srctype) {
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case NC_DOUBLE:
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d = (double)zcvt.float64v;
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break;
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case NC_INT64:
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d = (double)zcvt.int64v;
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break;
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case NC_UINT64:
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d = (double)zcvt.uint64v;
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break;
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case NC_STRING: /* NaN might be quoted */
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switch (naninftest(zcvt.strv,&naninf,&naninff)) {
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case NC_NAT: abort();
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case NC_FLOAT:
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case NC_DOUBLE:
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d = naninf; break;
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break;
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}
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break;
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default: abort();
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}
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ncbytesappendn(buf,(char*)&d,sizeof(d));
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} break;
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case NC_STRING: {
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char* scopy = NULL;
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if(srctype != NC_STRING) {stat = NC_EINVAL; goto done;}
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/* Need to append the pointer and not what it points to */
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scopy = nulldup(zcvt.strv);
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ncbytesappendn(buf,(void*)&scopy,sizeof(scopy));
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scopy = NULL;
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} break;
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case NC_CHAR: {
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char digits[64];
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switch (srctype) {
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case NC_DOUBLE:
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snprintf(digits,sizeof(digits),"%lf",(double)zcvt.float64v);
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ncbytesappendn(buf,digits,strlen(digits));
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break;
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case NC_INT64:
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snprintf(digits,sizeof(digits),"%lli",(long long)zcvt.int64v);
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ncbytesappendn(buf,digits,strlen(digits));
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case NC_UINT64:
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snprintf(digits,sizeof(digits),"%lli",(unsigned long long)zcvt.uint64v);
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ncbytesappendn(buf,digits,strlen(digits));
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break;
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case NC_STRING:
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len = strlen(zcvt.strv);
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ncbytesappendn(buf,zcvt.strv,len);
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default: abort();
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}
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} break;
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default: stat = NC_EINTERNAL; goto done;
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}
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done:
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if(stat == NC_NOERR && outofrange) stat = NC_ERANGE;
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return stat;
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}
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/* Convert a memory value to a JSON string value */
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int
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NCZ_stringconvert1(nc_type srctype, char* src, NCjson* jvalue)
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{
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int stat = NC_NOERR;
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struct ZCVT zcvt;
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nc_type dsttype = NC_NAT;
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char s[1024];
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char sq[1024+2+1];
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char* p = NULL;
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int isnanorinf = 0;
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assert(srctype >= NC_NAT && srctype != NC_CHAR && srctype <= NC_STRING);
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/* Convert to a restricted set of values */
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switch (srctype) {
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case NC_BYTE: {
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zcvt.int64v = (signed long long)(*((signed char*)src));
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dsttype = NC_INT64;
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} break;
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case NC_UBYTE: {
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zcvt.uint64v = (unsigned long long)(*((unsigned char*)src));
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dsttype = NC_UINT64;
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} break;
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case NC_SHORT: {
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zcvt.int64v = (signed long long)(*((signed short*)src));
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dsttype = NC_INT64;
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} break;
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case NC_USHORT: {
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zcvt.uint64v = (unsigned long long)(*((unsigned short*)src));
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dsttype = NC_UINT64;
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} break;
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case NC_INT: {
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zcvt.int64v = (signed long long)(*((signed int*)src));
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dsttype = NC_INT64;
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} break;
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case NC_UINT: {
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zcvt.uint64v = (unsigned long long)(*((unsigned int*)src));
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dsttype = NC_UINT64;
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} break;
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case NC_INT64: {
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zcvt.int64v = (signed long long)(*((signed long long*)src));
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dsttype = NC_INT64;
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} break;
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case NC_UINT64: {
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zcvt.uint64v = (unsigned long long)(*((unsigned long long*)src));
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dsttype = NC_UINT64;
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} break;
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case NC_FLOAT: {
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zcvt.float64v = (double)(*((float*)src));
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dsttype = NC_DOUBLE;
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} break;
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case NC_DOUBLE: {
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dsttype = NC_DOUBLE;
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zcvt.float64v= (double)(*((double*)src));
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} break;
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case NC_STRING: {
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dsttype = NC_STRING;
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zcvt.strv= *((char**)src);
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} break;
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default: stat = NC_EINTERNAL; goto done;
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}
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/* Convert from restricted set of values to standardized string form*/
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switch (dsttype) {
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case NC_INT64: {
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snprintf(s,sizeof(s),"%lld",zcvt.int64v);
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} break;
|
|
case NC_UINT64: {
|
|
snprintf(s,sizeof(s),"%llu",zcvt.uint64v);
|
|
} break;
|
|
case NC_DOUBLE: {
|
|
#ifdef _MSC_VER
|
|
switch (_fpclass(zcvt.float64v)) {
|
|
case _FPCLASS_SNAN: case _FPCLASS_QNAN:
|
|
strcpy(s,"NaN"); isnanorinf = 1; break;
|
|
case _FPCLASS_NINF:
|
|
strcpy(s,"-Infinity"); isnanorinf = 1; break;
|
|
case _FPCLASS_PINF:
|
|
strcpy(s,"Infinity"); isnanorinf = 1; break;
|
|
default:
|
|
snprintf(s,sizeof(s),"%lg",zcvt.float64v); /* handles NAN? */
|
|
break;
|
|
}
|
|
#else
|
|
if(isnan(zcvt.float64v))
|
|
{strcpy(s,"NaN"); isnanorinf = 1;}
|
|
else if(isinf(zcvt.float64v) && zcvt.float64v < 0)
|
|
{strcpy(s,"-Infinity"); isnanorinf = 1;}
|
|
else if(isinf(zcvt.float64v) && zcvt.float64v > 0)
|
|
{strcpy(s,"Infinity"); isnanorinf = 1;}
|
|
else {
|
|
snprintf(s,sizeof(s),"%lg",zcvt.float64v); /* handles NAN? */
|
|
}
|
|
#endif
|
|
/* Quote the nan/inf constant */
|
|
if(isnanorinf) {
|
|
size_t l = strlen(s);
|
|
memcpy(sq,s,l+1);
|
|
s[0] = '"';
|
|
memcpy(s+1,sq,l);
|
|
s[l+1] = '"';
|
|
s[l+2] = '\0';
|
|
}
|
|
} break;
|
|
case NC_STRING: {
|
|
p = nulldup(zcvt.strv);
|
|
} break;
|
|
default: stat = NC_EINTERNAL; goto done;
|
|
}
|
|
if(p == NULL)
|
|
p = strdup(s);
|
|
NCJsetstring(jvalue,p);
|
|
p = NULL;
|
|
done:
|
|
nullfree(p);
|
|
return stat;
|
|
}
|
|
|
|
/* Convert arbitrary netcdf attribute vector to equivalent JSON */
|
|
int
|
|
NCZ_stringconvert(nc_type typeid, size_t len, void* data0, NCjson** jdatap)
|
|
{
|
|
int stat = NC_NOERR;
|
|
size_t i;
|
|
char* src = data0; /* so we can do arithmetic on it */
|
|
size_t typelen;
|
|
char* str = NULL;
|
|
NCjson* jvalue = NULL;
|
|
NCjson* jdata = NULL;
|
|
int jtype = NCJ_UNDEF;
|
|
|
|
jtype = typeid2jtype(typeid);
|
|
|
|
if((stat = NC4_inq_atomic_type(typeid, NULL, &typelen)))
|
|
goto done;
|
|
|
|
/* Handle char type specially */
|
|
if(typeid == NC_CHAR) {
|
|
/* Apply the JSON write convention */
|
|
if((stat = NCJparsen(len,src,0,&jdata))) { /* !parseable */
|
|
/* Create a string valued json object */
|
|
if((stat = NCJnewstringn(NCJ_STRING,len,src,&jdata))) goto done;
|
|
}
|
|
} else if(len == 1) { /* create singleton */
|
|
if((stat = NCJnew(jtype,&jdata))) goto done;
|
|
if((stat = NCZ_stringconvert1(typeid, src, jdata))) goto done;
|
|
} else { /* len > 1 create array of values */
|
|
if((stat = NCJnew(NCJ_ARRAY,&jdata))) goto done;
|
|
for(i=0;i<len;i++) {
|
|
if((stat = NCJnew(jtype,&jvalue))) goto done;
|
|
if((stat = NCZ_stringconvert1(typeid, src, jvalue))) goto done;
|
|
NCJappend(jdata,jvalue);
|
|
jvalue = NULL;
|
|
src += typelen;
|
|
}
|
|
}
|
|
if(jdatap) {*jdatap = jdata; jdata = NULL;}
|
|
|
|
done:
|
|
nullfree(str);
|
|
NCJreclaim(jvalue);
|
|
NCJreclaim(jdata);
|
|
return stat;
|
|
}
|
|
|
|
static int
|
|
typeid2jtype(nc_type typeid)
|
|
{
|
|
switch (typeid) {
|
|
case NC_BYTE: case NC_SHORT: case NC_INT: case NC_INT64:
|
|
case NC_UBYTE: case NC_USHORT: case NC_UINT: case NC_UINT64:
|
|
return NCJ_INT;
|
|
case NC_FLOAT:
|
|
case NC_DOUBLE:
|
|
return NCJ_DOUBLE;
|
|
case NC_CHAR:
|
|
case NC_STRING:
|
|
return NCJ_STRING;
|
|
default: break;
|
|
}
|
|
return NCJ_UNDEF;
|
|
}
|
|
|
|
/* Test for Nan(f) and Inf(f)
|
|
return 0 if not nan or inf
|
|
return NC_FLOAT if nanf or inff
|
|
return NC_DOUBLE if nan or inf
|
|
Always fill in both double and float cases so caller can choose
|
|
*/
|
|
static int
|
|
naninftest(const char* s, double* dcase, float* fcase)
|
|
{
|
|
nc_type nctype= NC_NAT;
|
|
assert(dcase && fcase);
|
|
if(strcasecmp(s,"nan")==0) {
|
|
*dcase = NAN; *fcase = NANF;
|
|
nctype = NC_DOUBLE;
|
|
} else if(strcasecmp(s,"-nan")==0) {
|
|
*dcase = (- NAN); *fcase = (- NANF);
|
|
nctype = NC_DOUBLE;
|
|
} else if(strcasecmp(s,"nanf")==0) {
|
|
*dcase = NAN; *fcase = NANF;
|
|
nctype = NC_FLOAT;
|
|
} else if(strcasecmp(s,"-nan")==0) {
|
|
*dcase = (- NAN); *fcase = (- NANF);
|
|
nctype = NC_FLOAT;
|
|
} else if(strcasecmp(s,"infinity")==0) {
|
|
*dcase = INFINITY; *fcase = INFINITYF;
|
|
nctype = NC_DOUBLE;
|
|
} else if(strcasecmp(s,"-infinity")==0) {
|
|
*dcase = (- INFINITY); *fcase = (- INFINITYF);
|
|
nctype = NC_DOUBLE;
|
|
} else if(strcasecmp(s,"infinityf")==0) {
|
|
*dcase = INFINITY; *fcase = INFINITYF;
|
|
nctype = NC_FLOAT;
|
|
} else if(strcasecmp(s,"-infinityf")==0) {
|
|
*dcase = (- INFINITY); *fcase = (- INFINITYF);
|
|
nctype = NC_FLOAT;
|
|
}
|
|
return nctype;
|
|
}
|