mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-27 08:49:16 +08:00
387 lines
9.8 KiB
C
387 lines
9.8 KiB
C
/*********************************************************************
|
|
* Copyright 2018, UCAR/Unidata
|
|
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
|
|
*********************************************************************/
|
|
|
|
#include "zincludes.h"
|
|
#include <math.h>
|
|
#ifdef _MSC_VER
|
|
#include <crtdbg.h>
|
|
#endif
|
|
|
|
#include "isnan.h"
|
|
|
|
/*
|
|
Code taken directly from libdap4/d4cvt.c
|
|
*/
|
|
|
|
/* Intermediate results */
|
|
struct ZCVT {
|
|
signed long long int64v;
|
|
unsigned long long uint64v;
|
|
double float64v;
|
|
};
|
|
|
|
int
|
|
NCZ_convert1(NCjson* jsrc, nc_type dsttype, char* memory)
|
|
{
|
|
int stat = NC_NOERR;
|
|
nc_type srctype;
|
|
struct ZCVT zcvt;
|
|
int outofrange = 0;
|
|
|
|
/* Convert the incoming jsrc string to a restricted set of values */
|
|
switch (jsrc->sort) {
|
|
case NCJ_INT: /* convert to (u)int64 */
|
|
if(jsrc->value[0] == '-') {
|
|
if(sscanf(jsrc->value,"%lld",&zcvt.int64v) != 1)
|
|
{stat = NC_EINVAL; goto done;}
|
|
srctype = NC_INT64;
|
|
} else {
|
|
if(sscanf(jsrc->value,"%llu",&zcvt.uint64v) != 1)
|
|
{stat = NC_EINVAL; goto done;}
|
|
srctype = NC_UINT64;
|
|
}
|
|
break;
|
|
case NCJ_DOUBLE:
|
|
/* Capture nan and infinity values */
|
|
if(strcasecmp(jsrc->value,"nan")==0)
|
|
zcvt.float64v = NAN;
|
|
else if(strcasecmp(jsrc->value,"-nan")==0)
|
|
zcvt.float64v = - NAN;
|
|
else if(strcasecmp(jsrc->value,"infinity")==0)
|
|
zcvt.float64v = INFINITY;
|
|
else if(strcasecmp(jsrc->value,"-infinity")==0)
|
|
zcvt.float64v = (- INFINITY);
|
|
else {
|
|
if(sscanf(jsrc->value,"%lg",&zcvt.float64v) != 1)
|
|
{stat = NC_EINVAL; goto done;}
|
|
}
|
|
srctype = NC_DOUBLE;
|
|
break;
|
|
case NCJ_BOOLEAN:
|
|
srctype = NC_UINT64;
|
|
if(strcasecmp(jsrc->value,"false")==0)
|
|
zcvt.uint64v = 0;
|
|
else
|
|
zcvt.uint64v = 1;
|
|
break;
|
|
default: stat = NC_EINTERNAL; goto done;
|
|
}
|
|
|
|
/* Now, do the down conversion into memory */
|
|
switch (dsttype) {
|
|
case NC_BYTE: {
|
|
signed char* p = (signed char*)memory;
|
|
switch (srctype) {
|
|
case NC_DOUBLE:
|
|
zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
|
|
/* fall thru */
|
|
case NC_INT64:
|
|
if(zcvt.int64v < NC_MIN_BYTE || zcvt.int64v > NC_MAX_BYTE) outofrange = 1;
|
|
*p = (signed char)zcvt.int64v;
|
|
break;
|
|
case NC_UINT64:
|
|
if(zcvt.uint64v > NC_MAX_BYTE) outofrange = 1;
|
|
*p = (signed char)zcvt.uint64v;
|
|
break;
|
|
}
|
|
} break;
|
|
case NC_UBYTE: {
|
|
unsigned char* p = (unsigned char*)memory;
|
|
switch (srctype) {
|
|
case NC_DOUBLE:
|
|
zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
|
|
/* fall thru */
|
|
case NC_INT64:
|
|
if(zcvt.int64v < 0 || zcvt.int64v > NC_MAX_BYTE) outofrange = 1;
|
|
*p = (unsigned char)zcvt.int64v;
|
|
break;
|
|
case NC_UINT64:
|
|
if(zcvt.uint64v > NC_MAX_UBYTE) outofrange = 1;
|
|
*p = (unsigned char)zcvt.uint64v;
|
|
break;
|
|
}
|
|
} break;
|
|
case NC_SHORT: {
|
|
signed short* p = (signed short*)memory;
|
|
switch (srctype) {
|
|
case NC_DOUBLE:
|
|
zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
|
|
/* fall thru */
|
|
case NC_INT64:
|
|
if(zcvt.int64v < NC_MIN_SHORT || zcvt.int64v > NC_MAX_SHORT) outofrange = 1;
|
|
*p = (signed short)zcvt.int64v;
|
|
break;
|
|
case NC_UINT64:
|
|
if(zcvt.uint64v > NC_MAX_SHORT) outofrange = 1;
|
|
*p = (signed short)zcvt.uint64v;
|
|
break;
|
|
}
|
|
} break;
|
|
case NC_USHORT: {
|
|
unsigned short* p = (unsigned short*)memory;
|
|
switch (srctype) {
|
|
case NC_DOUBLE:
|
|
zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
|
|
/* fall thru */
|
|
case NC_INT64:
|
|
if(zcvt.int64v < 0 || zcvt.int64v > NC_MAX_USHORT) outofrange = 1;
|
|
*p = (unsigned short)zcvt.int64v;
|
|
break;
|
|
case NC_UINT64:
|
|
if(zcvt.uint64v > NC_MAX_USHORT) outofrange = 1;
|
|
*p = (unsigned short)zcvt.uint64v;
|
|
break;
|
|
}
|
|
} break;
|
|
case NC_INT: {
|
|
signed int* p = (signed int*)memory;
|
|
switch (srctype) {
|
|
case NC_DOUBLE:
|
|
zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
|
|
/* fall thru */
|
|
case NC_INT64:
|
|
if(zcvt.int64v < NC_MIN_INT || zcvt.int64v > NC_MAX_INT) outofrange = 1;
|
|
*p = (signed int)zcvt.int64v;
|
|
break;
|
|
case NC_UINT64:
|
|
if(zcvt.uint64v > NC_MAX_INT) outofrange = 1;
|
|
*p = (signed int)zcvt.uint64v;
|
|
break;
|
|
}
|
|
} break;
|
|
case NC_UINT: {
|
|
unsigned int* p = (unsigned int*)memory;
|
|
switch (srctype) {
|
|
case NC_DOUBLE:
|
|
zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
|
|
/* fall thru */
|
|
case NC_INT64:
|
|
if(zcvt.int64v < 0 || zcvt.int64v > NC_MAX_UINT) outofrange = 1;
|
|
*p = (unsigned int)zcvt.int64v;
|
|
break;
|
|
case NC_UINT64:
|
|
if(zcvt.uint64v > NC_MAX_UINT) outofrange = 1;
|
|
*p = (unsigned int)zcvt.uint64v;
|
|
break;
|
|
}
|
|
} break;
|
|
case NC_INT64: {
|
|
signed long long* p = (signed long long*)memory;
|
|
switch (srctype) {
|
|
case NC_DOUBLE:
|
|
zcvt.int64v = (long long)zcvt.float64v; /* Convert to int64 */
|
|
/* fall thru */
|
|
case NC_INT64:
|
|
*p = (signed long long)zcvt.int64v;
|
|
break;
|
|
case NC_UINT64:
|
|
if(zcvt.uint64v > NC_MAX_INT64) outofrange = 1;
|
|
*p = (signed long long)zcvt.uint64v;
|
|
break;
|
|
}
|
|
} break;
|
|
case NC_UINT64: {
|
|
unsigned long long* p = (unsigned long long*)memory;
|
|
switch (srctype) {
|
|
case NC_DOUBLE:
|
|
zcvt.int64v = (signed long long)zcvt.float64v;
|
|
/* fall thru */
|
|
case NC_INT64:
|
|
if(zcvt.int64v < 0) outofrange = 1;
|
|
*p = (unsigned long long)zcvt.int64v;
|
|
break;
|
|
case NC_UINT64:
|
|
*p = (unsigned long long)zcvt.uint64v;
|
|
break;
|
|
}
|
|
} break;
|
|
case NC_FLOAT: {
|
|
float* p = (float*)memory;
|
|
switch (srctype) {
|
|
case NC_DOUBLE:
|
|
*p = (float)zcvt.float64v;
|
|
break;
|
|
case NC_INT64:
|
|
*p = (float)zcvt.int64v;
|
|
break;
|
|
case NC_UINT64:
|
|
*p = (float)zcvt.uint64v;
|
|
break;
|
|
}
|
|
} break;
|
|
case NC_DOUBLE: {
|
|
double* p = (double*)memory;
|
|
switch (srctype) {
|
|
case NC_DOUBLE:
|
|
*p = (double)zcvt.float64v;
|
|
break;
|
|
case NC_INT64:
|
|
*p = (double)zcvt.int64v;
|
|
break;
|
|
case NC_UINT64:
|
|
*p = (double)zcvt.uint64v;
|
|
break;
|
|
}
|
|
} break;
|
|
default: stat = NC_EINTERNAL; goto done;
|
|
}
|
|
|
|
done:
|
|
if(stat == NC_NOERR && outofrange) stat = NC_ERANGE;
|
|
return stat;
|
|
}
|
|
|
|
int
|
|
NCZ_stringconvert1(nc_type srctype, char* src, char** strp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
struct ZCVT zcvt;
|
|
nc_type dsttype = NC_NAT;
|
|
char s[1024];
|
|
|
|
assert(srctype >= NC_NAT && srctype != NC_CHAR && srctype < NC_STRING);
|
|
/* Convert to a restricted set of values */
|
|
switch (srctype) {
|
|
case NC_BYTE: {
|
|
zcvt.int64v = (signed long long)(*((signed char*)src));
|
|
dsttype = NC_INT64;
|
|
} break;
|
|
case NC_UBYTE: {
|
|
zcvt.uint64v = (unsigned long long)(*((unsigned char*)src));
|
|
dsttype = NC_UINT64;
|
|
} break;
|
|
case NC_SHORT: {
|
|
zcvt.int64v = (signed long long)(*((signed short*)src));
|
|
dsttype = NC_INT64;
|
|
} break;
|
|
case NC_USHORT: {
|
|
zcvt.uint64v = (unsigned long long)(*((unsigned short*)src));
|
|
dsttype = NC_UINT64;
|
|
} break;
|
|
case NC_INT: {
|
|
zcvt.int64v = (signed long long)(*((signed int*)src));
|
|
dsttype = NC_INT64;
|
|
} break;
|
|
case NC_UINT: {
|
|
zcvt.uint64v = (unsigned long long)(*((unsigned int*)src));
|
|
dsttype = NC_UINT64;
|
|
} break;
|
|
case NC_INT64: {
|
|
zcvt.int64v = (signed long long)(*((signed long long*)src));
|
|
dsttype = NC_INT64;
|
|
} break;
|
|
case NC_UINT64: {
|
|
zcvt.uint64v = (unsigned long long)(*((unsigned long long*)src));
|
|
dsttype = NC_UINT64;
|
|
} break;
|
|
case NC_FLOAT: {
|
|
zcvt.float64v = (double)(*((float*)src));
|
|
dsttype = NC_DOUBLE;
|
|
} break;
|
|
case NC_DOUBLE: {
|
|
zcvt.float64v= (double)(*((double*)src));
|
|
dsttype = NC_DOUBLE;
|
|
} break;
|
|
default: stat = NC_EINTERNAL; goto done;
|
|
}
|
|
|
|
/* Convert from restricted set of values to standardized string form*/
|
|
switch (dsttype) {
|
|
case NC_INT64: {
|
|
snprintf(s,sizeof(s),"%lld",zcvt.int64v);
|
|
} break;
|
|
case NC_UINT64: {
|
|
snprintf(s,sizeof(s),"%llu",zcvt.uint64v);
|
|
} break;
|
|
case NC_DOUBLE: {
|
|
snprintf(s,sizeof(s),"%lg",zcvt.float64v); /* handles NAN? */
|
|
} break;
|
|
default: stat = NC_EINTERNAL; goto done;
|
|
}
|
|
if(strp) *strp = strdup(s);
|
|
done:
|
|
return stat;
|
|
}
|
|
|
|
int
|
|
NCZ_stringconvert(nc_type typeid, size_t len, void* data0, NCjson** jdatap)
|
|
{
|
|
int stat = NC_NOERR;
|
|
int i;
|
|
char* src = data0; /* so we can do arithmetic on it */
|
|
size_t typelen;
|
|
char* str = NULL;
|
|
NCjson* jvalue = NULL;
|
|
NCjson* jdata = NULL;
|
|
|
|
if((stat = NC4_inq_atomic_type(typeid, NULL, &typelen)))
|
|
goto done;
|
|
|
|
/* Handle char type specially */
|
|
if(typeid == NC_CHAR) {
|
|
/* Create a string valued json object */
|
|
if((stat = NCJnewstringn(NCJ_STRING,len,src,&jdata)))
|
|
goto done;
|
|
} else { /* for all other values, create an array of values */
|
|
if((stat = NCJnew(NCJ_ARRAY,&jdata))) goto done;
|
|
for(i=0;i<len;i++) {
|
|
char* special = NULL;
|
|
double d;
|
|
if((stat = NCZ_stringconvert1(typeid, src, &str)))
|
|
goto done;
|
|
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:
|
|
if((stat=NCJnew(NCJ_INT,&jvalue))) goto done;
|
|
break;
|
|
case NC_FLOAT:
|
|
case NC_DOUBLE: {
|
|
if(typeid == NC_FLOAT)
|
|
d = (double)(*((float*)src));
|
|
else
|
|
d = *((double*)src);
|
|
#ifdef _WIN32
|
|
switch (_fpclass(d)) {
|
|
case _FPCLASS_SNAN: case _FPCLASS_QNAN:
|
|
special = "Nan"; break;
|
|
case _FPCLASS_NINF:
|
|
special = "-Infinity"; break;
|
|
case _FPCLASS_PINF:
|
|
special = "Infinity"; break;
|
|
default: break;
|
|
}
|
|
#else
|
|
if(isnan(d))
|
|
special = "NaN";
|
|
else if(isinf(d) && d < 0)
|
|
special = "-Infinity";
|
|
else if(isinf(d) && d > 0)
|
|
special = "Infinity";
|
|
else {}
|
|
#endif
|
|
if((stat=NCJnew(NCJ_DOUBLE,&jvalue))) goto done;
|
|
} break;
|
|
case NC_CHAR:
|
|
if((stat=NCJnew(NCJ_STRING,&jvalue))) goto done;
|
|
break;
|
|
default: stat = NC_EINTERNAL; goto done;
|
|
}
|
|
if(special) {nullfree(str); str = strdup(special);}
|
|
jvalue->value = str;
|
|
str = NULL;
|
|
nclistpush(jdata->contents,jvalue);
|
|
jvalue = NULL;
|
|
src += typelen;
|
|
}
|
|
}
|
|
if(jdatap) {*jdatap = jdata; jdata = NULL;}
|
|
|
|
done:
|
|
nullfree(str);
|
|
NCJreclaim(jvalue);
|
|
NCJreclaim(jdata);
|
|
return stat;
|
|
}
|