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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include "cdi.h"
#include "dmemory.h"
static void printAtts(int vlistID);
int
main(int argc, const char **argv)
{
// todo: handle optional arguments here to increase test coverage
const char *fname = (argc > 1) ? argv[1] : "test.nc";
int countMissingValues = 1;
int streamID = streamOpenRead(fname);
if (streamID < 0)
{
fprintf(stderr, "Open failed for file %s: %s\n", fname, cdiStringError(streamID));
return EXIT_FAILURE;
}
int vlistID = streamInqVlist(streamID);
size_t nVars = (size_t) vlistNvars(vlistID);
double *buf = NULL;
size_t bufSize = 0;
size_t allNmissSum = 0;
printAtts(vlistID);
for (int tsID = 0; streamInqTimestep(streamID, tsID); ++tsID)
{
for (size_t varID = 0; varID < nVars; ++varID)
{
size_t memSize = (size_t) vlistInqVarSize(vlistID, (int) varID) * sizeof(double);
SizeType nmiss;
if (memSize > bufSize)
{
double *temp = (double *) Realloc(buf, memSize);
if (!temp)
{
perror("read buffer reallocation failed");
return EXIT_FAILURE;
}
buf = temp;
}
streamReadVar(streamID, (int) varID, buf, &nmiss);
allNmissSum += (size_t) nmiss;
}
}
if (countMissingValues) printf("missing values count = %zu\n", allNmissSum);
free(buf);
streamClose(streamID);
return EXIT_SUCCESS;
}
static void
printAtts(int vlistID)
{
size_t nVars = (size_t) vlistNvars(vlistID);
static const char globDesc[] = "global", varDescPrefix[] = "variable ";
size_t digitsPerInt = 9;
size_t bufSize = digitsPerInt + sizeof(varDescPrefix);
void *restrict buf = Malloc(bufSize);
if (!buf)
{
perror("attribute buffer resize failed");
exit(EXIT_FAILURE);
}
for (size_t varIdx = 0; varIdx <= nVars; ++varIdx)
{
int nAtts, attType, attLen;
char attName[CDI_MAX_NAME + 1];
int varID = (int) varIdx - 1;
cdiInqNatts(vlistID, varID, &nAtts);
for (size_t attIdx = 0; attIdx < (size_t) nAtts; attIdx++)
{
int rc = cdiInqAtt(vlistID, varID, (int) attIdx, attName, &attType, &attLen);
{
const char *varDesc
= varIdx > 0 ? (snprintf((char *) buf, bufSize, "%s%d", varDescPrefix, vlistInqVarCode(vlistID, varID)), (char *) buf)
: globDesc;
printf("%s attribute \"%s\", value: ", varDesc, attName);
}
if (attLen < 0)
{
puts("error retrieving value");
continue;
}
size_t elemSize = 0;
switch (attType)
{
case CDI_DATATYPE_TXT: elemSize = 1; break;
case CDI_DATATYPE_FLT: elemSize = sizeof(double); break;
case CDI_DATATYPE_INT: elemSize = sizeof(int); break;
}
size_t attSize = elemSize * ((size_t) attLen + 1);
if (attSize > bufSize)
{
if (!(buf = Realloc(buf, attSize)))
{
perror("attribute buffer resize failed");
exit(EXIT_FAILURE);
}
}
switch (attType)
{
case CDI_DATATYPE_TXT:
rc = cdiInqAttTxt(vlistID, (int) varID, attName, attLen, (char *) buf);
if (rc == CDI_NOERR) printf("\"%.*s\"", attLen, (char *) buf);
break;
case CDI_DATATYPE_FLT:
rc = cdiInqAttFlt(vlistID, (int) varID, attName, attLen + 1, (double *) buf);
if (rc == CDI_NOERR && attLen)
{
const double *restrict dp = (const double *) buf;
printf("%10g", dp[0]);
for (size_t i = 1; i < (size_t) attLen; ++i) printf(", %10g", dp[i]);
}
break;
case CDI_DATATYPE_INT:
rc = cdiInqAttInt(vlistID, (int) varID, attName, attLen + 1, (int *) buf);
if (rc == CDI_NOERR && attLen)
{
const int *restrict ip = (const int *) buf;
printf("%d", ip[0]);
for (size_t i = 1; i < (size_t) attLen; ++i) printf(", %d", ip[i]);
}
break;
}
if (rc == CDI_NOERR) { putchar('\n'); }
else { puts("error retrieving value"); }
}
}
free(buf);
}
/*
* Local Variables:
* c-file-style: "Java"
* c-basic-offset: 2
* indent-tabs-mode: nil
* show-trailing-whitespace: t
* require-trailing-newline: t
* End:
*/
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