mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-21 08:39:46 +08:00
396 lines
10 KiB
C
396 lines
10 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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/* Intermediate results */
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struct ZCVT {
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signed long long int64v;
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unsigned long long uint64v;
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double float64v;
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};
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/* Forward */
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static int typeid2jtype(nc_type typeid);
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/* Convert an NCJ_STRING to a memory equivalent value of specified dsttype */
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int
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NCZ_convert1(NCjson* jsrc, nc_type dsttype, unsigned char* memory)
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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;
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int outofrange = 0;
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/* Convert the incoming jsrc string 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_STRING:
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case NCJ_DOUBLE:
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/* Capture nan and infinity values */
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if(strcasecmp(NCJstring(jsrc),"nan")==0)
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zcvt.float64v = NAN;
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else if(strcasecmp(NCJstring(jsrc),"-nan")==0)
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zcvt.float64v = - NAN;
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else if(strcasecmp(NCJstring(jsrc),"infinity")==0)
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zcvt.float64v = INFINITY;
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else if(strcasecmp(NCJstring(jsrc),"-infinity")==0)
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zcvt.float64v = (- INFINITY);
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else {
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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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}
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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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default: stat = NC_EINTERNAL; goto done;
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}
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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* p = (signed char*)memory;
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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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*p = (signed char)zcvt.int64v;
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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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*p = (signed char)zcvt.uint64v;
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break;
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}
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} break;
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case NC_UBYTE: {
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unsigned char* p = (unsigned char*)memory;
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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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*p = (unsigned char)zcvt.int64v;
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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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*p = (unsigned char)zcvt.uint64v;
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break;
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}
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} break;
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case NC_SHORT: {
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signed short* p = (signed short*)memory;
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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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*p = (signed short)zcvt.int64v;
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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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*p = (signed short)zcvt.uint64v;
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break;
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}
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} break;
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case NC_USHORT: {
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unsigned short* p = (unsigned short*)memory;
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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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*p = (unsigned short)zcvt.int64v;
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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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*p = (unsigned short)zcvt.uint64v;
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break;
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}
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} break;
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case NC_INT: {
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signed int* p = (signed int*)memory;
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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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*p = (signed int)zcvt.int64v;
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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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*p = (signed int)zcvt.uint64v;
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break;
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}
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} break;
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case NC_UINT: {
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unsigned int* p = (unsigned int*)memory;
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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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*p = (unsigned int)zcvt.int64v;
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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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*p = (unsigned int)zcvt.uint64v;
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break;
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}
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} break;
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case NC_INT64: {
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signed long long* p = (signed long long*)memory;
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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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*p = (signed long long)zcvt.int64v;
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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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*p = (signed long long)zcvt.uint64v;
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break;
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}
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} break;
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case NC_UINT64: {
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unsigned long long* p = (unsigned long long*)memory;
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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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*p = (unsigned long long)zcvt.int64v;
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break;
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case NC_UINT64:
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*p = (unsigned long long)zcvt.uint64v;
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break;
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}
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} break;
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case NC_FLOAT: {
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float* p = (float*)memory;
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switch (srctype) {
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case NC_DOUBLE:
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*p = (float)zcvt.float64v;
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break;
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case NC_INT64:
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*p = (float)zcvt.int64v;
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break;
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case NC_UINT64:
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*p = (float)zcvt.uint64v;
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break;
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}
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} break;
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case NC_DOUBLE: {
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double* p = (double*)memory;
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switch (srctype) {
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case NC_DOUBLE:
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*p = (double)zcvt.float64v;
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break;
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case NC_INT64:
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*p = (double)zcvt.int64v;
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break;
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case NC_UINT64:
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*p = (double)zcvt.uint64v;
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break;
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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, size_t len, 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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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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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;
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case NC_UINT64: {
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snprintf(s,sizeof(s),"%llu",zcvt.uint64v);
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} break;
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case NC_DOUBLE: {
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#ifdef _MSC_VER
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switch (_fpclass(zcvt.float64v)) {
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case _FPCLASS_SNAN: case _FPCLASS_QNAN:
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strcpy(s,"NaN"); break;
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case _FPCLASS_NINF:
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strcpy(s,"-Infinity"); break;
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case _FPCLASS_PINF:
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strcpy(s,"Infinity"); break;
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default:
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snprintf(s,sizeof(s),"%lg",zcvt.float64v); /* handles NAN? */
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break;
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}
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#else
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if(isnan(zcvt.float64v))
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strcpy(s,"NaN");
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else if(isinf(zcvt.float64v) && zcvt.float64v < 0)
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strcpy(s,"-Infinity");
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else if(isinf(zcvt.float64v) && zcvt.float64v > 0)
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strcpy(s,"Infinity");
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else {
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snprintf(s,sizeof(s),"%lg",zcvt.float64v); /* handles NAN? */
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}
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#endif
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} break;
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default: stat = NC_EINTERNAL; goto done;
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}
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NCJsetstring(jvalue,strdup(s));
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done:
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return stat;
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}
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int
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NCZ_stringconvert(nc_type typeid, size_t len, void* data0, NCjson** jdatap)
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{
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int stat = NC_NOERR;
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int i;
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char* src = data0; /* so we can do arithmetic on it */
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size_t typelen;
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char* str = NULL;
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NCjson* jvalue = NULL;
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NCjson* jdata = NULL;
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int jtype = NCJ_UNDEF;
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jtype = typeid2jtype(typeid);
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if((stat = NC4_inq_atomic_type(typeid, NULL, &typelen)))
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goto done;
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/* Handle char type specially */
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if(typeid == NC_CHAR) {
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/* Create a string valued json object */
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if((stat = NCJnewstringn(NCJ_STRING,len,src,&jdata)))
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goto done;
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} else if(len == 1) { /* create singleton */
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if((stat = NCJnew(jtype,&jdata))) goto done;
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if((stat = NCZ_stringconvert1(typeid, len, src, jdata))) goto done;
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} else { /* len > 1 create array of values */
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if((stat = NCJnew(NCJ_ARRAY,&jdata))) goto done;
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for(i=0;i<len;i++) {
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if((stat = NCJnew(jtype,&jvalue))) goto done;
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if((stat = NCZ_stringconvert1(typeid, len, src, jvalue))) goto done;
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NCJappend(jdata,jvalue);
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jvalue = NULL;
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src += typelen;
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}
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}
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if(jdatap) {*jdatap = jdata; jdata = NULL;}
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done:
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nullfree(str);
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NCJreclaim(jvalue);
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NCJreclaim(jdata);
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return stat;
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}
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static int
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typeid2jtype(nc_type typeid)
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{
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switch (typeid) {
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case NC_BYTE: case NC_SHORT: case NC_INT: case NC_INT64:
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case NC_UBYTE: case NC_USHORT: case NC_UINT: case NC_UINT64:
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return NCJ_INT;
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case NC_FLOAT:
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case NC_DOUBLE:
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return NCJ_DOUBLE;
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case NC_CHAR:
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return NCJ_STRING;
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default: break;
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}
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return NCJ_UNDEF;
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}
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