double /* O [frc] Double precision representation of var->val.?p[0] */
ptr_unn_2_scl_dbl /* [fnc] Convert first element of NCO variable to a scalar double */
(const ptr_unn val, /* I [sct] Pointer union to convert to scalar double */
const nc_type type) /* I [enm] Type of values pointed to by pointer union */
{
/* Purpose: Return first element of NCO variable converted to a scalar double */
double scl_dbl; /* [sct] Double precision value of scale_factor */
ptr_unn ptr_unn_scl_dbl; /* [unn] Pointer union to double precision value of first element */
/* Variable must be in memory already */
if(val.vp == NULL) {
(void)fprintf(stdout,"%s: ERROR ptr_unn_2_scl_dbl() called with empty val.vp\n",nco_prg_nm_get());
nco_exit(EXIT_FAILURE);
} /* endif */
/* Valid memory address exists */
ptr_unn_scl_dbl.vp=(void *)nco_malloc(nco_typ_lng(NC_DOUBLE)); /* [unn] Pointer union to double precision value of first element */
(void)nco_val_cnf_typ(type,val,NC_DOUBLE,ptr_unn_scl_dbl);
scl_dbl=ptr_unn_scl_dbl.dp[0];
ptr_unn_scl_dbl.vp=nco_free(ptr_unn_scl_dbl.vp);
return scl_dbl;
} /* end ptr_unn_2_scl_dbl() */
void
nco_att_cpy /* [fnc] Copy attributes from input netCDF file to output netCDF file */
(const int in_id, /* I [id] netCDF input-file ID */
const int out_id, /* I [id] netCDF output-file ID */
const int var_in_id, /* I [id] netCDF input-variable ID */
const int var_out_id, /* I [id] netCDF output-variable ID */
const nco_bool PCK_ATT_CPY) /* I [flg] Copy attributes "scale_factor", "add_offset" */
{
/* Purpose: Copy attributes from input netCDF file to output netCDF file
If var_in_id == NC_GLOBAL, then copy global attributes
Otherwise copy only indicated variable's attributes
When PCK_ATT_CPY is false, copy all attributes except "scale_factor", "add_offset" */
char att_nm[NC_MAX_NAME];
char var_nm[NC_MAX_NAME];
int idx;
int nbr_att;
int rcd; /* [enm] Return code */
if(var_in_id == NC_GLOBAL){
(void)nco_inq_natts(in_id,&nbr_att);
}else{
(void)nco_inq_varnatts(in_id,var_in_id,&nbr_att);
} /* end else */
/* Jump back to here if current attribute is treated specially */
for(idx=0;idx<nbr_att;idx++){
(void)nco_inq_attname(in_id,var_in_id,idx,att_nm);
/* Look for same attribute in output variable in output file */
rcd=nco_inq_att_flg(out_id,var_out_id,att_nm,(nc_type *)NULL,(long *)NULL);
/* If instructed not to copy packing attributes... */
if(!PCK_ATT_CPY)
/* ...and attribute is "scale_factor" or "add_offset" ... */
if(!strcmp(att_nm,"scale_factor") || !strcmp(att_nm,"add_offset"))
/* ...then skip remainder of loop, thereby skipping attribute copy... */
continue;
/* Inform user when copy will overwrite an existing attribute */
if(dbg_lvl_get() >= nco_dbg_std){
if(rcd == NC_NOERR){
if(var_out_id == NC_GLOBAL){
(void)fprintf(stderr,"%s: INFO Overwriting global attribute %s\n",prg_nm_get(),att_nm);
}else{
(void)nco_inq_varname(out_id,var_out_id,var_nm);
(void)fprintf(stderr,"%s: INFO Overwriting attribute %s for output variable %s\n",prg_nm_get(),att_nm,var_nm);
} /* end else */
} /* end if */
} /* end if dbg */
if(strcmp(att_nm,nco_mss_val_sng_get())){
/* Copy all attributes except _FillValue with fast library routine */
(void)nco_copy_att(in_id,var_in_id,att_nm,out_id,var_out_id);
}else{
/* Convert "_FillValue" attribute to unpacked type then copy
Impose NCO convention that _FillValue is same type as variable,
whether variable is packed or not */
aed_sct aed;
long att_sz;
size_t att_lng_in;
nc_type att_typ_in;
nc_type att_typ_out;
ptr_unn mss_tmp;
(void)nco_inq_att(in_id,var_in_id,att_nm,&att_typ_in,&att_sz);
if(att_sz != 1L){
(void)fprintf(stderr,"%s: ERROR input \"%s\" attribute has %li elements, but nco_att_cpy() only works for size of 1\n",prg_nm_get(),att_nm,att_sz);
nco_exit(EXIT_FAILURE);
} /* end if */
/* Convert "_FillValue" to unpacked type before copying */
aed.att_nm=att_nm; /* Name of attribute */
if(var_out_id == NC_GLOBAL){
aed.var_nm=NULL;
}else{
(void)nco_inq_varname(out_id,var_out_id,var_nm);
aed.var_nm=var_nm; /* Name of variable, or NULL for global attribute */
} /* end if */
aed.id=out_id; /* Variable ID or NC_GLOBAL ( = -1) for global attribute */
aed.sz=att_sz; /* Number of elements in attribute */
/* Do not convert global attributes or PCK_ATT_CPY */
if(PCK_ATT_CPY || var_out_id==NC_GLOBAL) att_typ_out=att_typ_in; else (void)nco_inq_vartype(out_id,var_out_id,&att_typ_out);
if(att_typ_out==att_typ_in){
aed.type=att_typ_out; /* Type of attribute */
aed.val.vp=(void *)nco_malloc(nco_typ_lng(aed.type)); /* Pointer to attribute value */
(void)nco_get_att(in_id,var_in_id,att_nm,aed.val.vp,att_typ_out);
}else{ /* att_typ_out!=att_typ_in */
/* Convert type */
aed.type=att_typ_out; /* Type of attribute */
aed.val.vp=(void *)nco_malloc(nco_typ_lng(aed.type)); /* Pointer to attribute value */
att_lng_in=att_sz*nco_typ_lng(att_typ_in);
mss_tmp.vp=(void *)nco_malloc(att_lng_in);
(void)nco_get_att(in_id,var_in_id,att_nm,mss_tmp.vp,att_typ_in);
(void)nco_val_cnf_typ(att_typ_in,mss_tmp,att_typ_out,aed.val);
mss_tmp.vp=nco_free(mss_tmp.vp);
} /* att_typ_out!=att_typ_in */
/* Overwrite mode causes problems with netCDF4 and "_FillValue"
Use create mode instead */
aed.mode=aed_create;
(void)nco_aed_prc(out_id,var_out_id,aed);
/* Release temporary memory */
aed.val.vp=nco_free(aed.val.vp);
} /* endif copying _FillValue */
} /* end loop over attributes */
} /* end nco_att_cpy() */
void
nco_aed_prc /* [fnc] Process single attribute edit for single variable */
(const int nc_id, /* I [id] Input netCDF file ID */
const int var_id, /* I [id] ID of variable on which to perform attribute editing */
const aed_sct aed) /* I [sct] Structure containing information necessary to edit */
{
/* Purpose: Process single attribute edit for single variable */
/* If var_id == NC_GLOBAL ( = -1) then global attribute will be edited */
#ifdef NCO_NETCDF4_AND_FILLVALUE
char att_nm_tmp[]="eulaVlliF_"; /* String of same length as "_FillValue" for name hack with netCDF4 */
nco_bool flg_netCDF4=False; /* [flg] File format is netCDF4 */
#endif /* !NCO_NETCDF4_AND_FILLVALUE */
char att_nm[NC_MAX_NAME];
char var_nm[NC_MAX_NAME];
/* NB: netCDF2 specifies att_sz is type int, netCDF3 and netCDF4 use size_t */
int nbr_att; /* [nbr] Number of attributes */
int rcd=NC_NOERR; /* [rcd] Return code */
long att_sz;
nc_type att_typ;
void *att_val_new=NULL;
if(var_id == NC_GLOBAL){
/* Get number of global attributes in file */
(void)nco_inq(nc_id,(int *)NULL,(int *)NULL,&nbr_att,(int *)NULL);
(void)strcpy(var_nm,"Global");
}else{
/* Get name and number of attributes for variable */
(void)nco_inq_var(nc_id,var_id,var_nm,(nc_type *)NULL,(int *)NULL,(int *)NULL,&nbr_att);
} /* end else */
/* Query attribute metadata when attribute name was specified */
if(aed.att_nm) rcd=nco_inq_att_flg(nc_id,var_id,aed.att_nm,&att_typ,&att_sz);
/* Before changing metadata, change missing values to new missing value if warranted
This capability is add-on feature not implemented too cleanly or efficiently
If every variable has "_FillValue" attribute and "_FillValue" is changed
globally, then algorithm goes into and out of define mode for each variable,
rather than collecting all information in first pass and replacing all data in second pass.
This is because ncatted was originally designed to change only metadata and so was
architected differently from other NCO operators. */
if(
aed.att_nm /* Linux strcmp() dumps core if attribute name is blank */
&& strcmp(aed.att_nm,nco_mss_val_sng_get()) == 0 /* Current attribute is "_FillValue" */
&& var_id != NC_GLOBAL /* Current attribute is not global */
&& (aed.mode == aed_modify || aed.mode == aed_overwrite) /* Modifying or overwriting existing value */
&& rcd == NC_NOERR /* Only when existing _FillValue attribute is modified */
&& att_sz == 1L /* Old _FillValue attribute must be of size 1 */
&& aed.sz == 1L /* New _FillValue attribute must be of size 1 */
){
int *dmn_id;
long *dmn_sz;
long *dmn_srt;
long idx;
long var_sz=long_CEWI;
ptr_unn mss_val_crr;
ptr_unn mss_val_new;
ptr_unn var_val;
var_sct *var=NULL_CEWI;
if(dbg_lvl_get() >= nco_dbg_std) (void)fprintf(stdout,"%s: INFO Replacing missing value data in variable %s\n",prg_nm_get(),var_nm);
/* Take file out of define mode */
(void)nco_enddef(nc_id);
/* Initialize (partially) variable structure */
var=(var_sct *)nco_malloc(sizeof(var_sct));
var->nc_id=nc_id;
var->id=var_id;
var->sz=1L;
/* Get type of variable and number of dimensions */
(void)nco_inq_var(nc_id,var_id,(char *)NULL,&var->type,&var->nbr_dim,(int *)NULL,(int *)NULL);
dmn_id=(int *)nco_malloc(var->nbr_dim*sizeof(int));
dmn_sz=(long *)nco_malloc(var->nbr_dim*sizeof(long));
dmn_srt=(long *)nco_malloc(var->nbr_dim*sizeof(long));
(void)nco_inq_vardimid(nc_id,var_id,dmn_id);
/* Get dimension sizes and construct variable size */
for(idx=0;idx<var->nbr_dim;idx++){
(void)nco_inq_dimlen(nc_id,dmn_id[idx],dmn_sz+idx);
var->sz*=dmn_sz[idx];
dmn_srt[idx]=0L;
} /* end loop over dim */
var->dmn_id=dmn_id;
var->cnt=dmn_sz;
var->srt=dmn_srt;
/* Place nco_var_get() code inline since var struct is not truly complete */
if((var->val.vp=(void *)nco_malloc_flg(var->sz*nco_typ_lng(var->type))) == NULL){
(void)fprintf(stdout,"%s: ERROR Unable to malloc() %ld*%lu bytes in nco_aed_prc()\n",prg_nm_get(),var->sz,(unsigned long)nco_typ_lng(var->type));
nco_exit(EXIT_FAILURE);
} /* end if */
if(var->sz > 1L){
(void)nco_get_vara(nc_id,var_id,var->srt,var->cnt,var->val.vp,var->type);
}else{
(void)nco_get_var1(nc_id,var_id,var->srt,var->val.vp,var->type);
} /* end else */
/* Get current missing value attribute */
var->mss_val.vp=NULL;
var->has_mss_val=nco_mss_val_get(nc_id,var);
/* Sanity check */
if(var->has_mss_val == False){
(void)fprintf(stdout,"%s: ERROR variable %s does not have \"%s\" attribute in nco_aed_prc()\n",prg_nm_get(),var_nm,nco_mss_val_sng_get());
nco_exit(EXIT_FAILURE);
} /* end if */
/* Shortcuts to avoid indirection */
var_val=var->val;
var_sz=var->sz;
/* Get new and old missing values in same type as variable */
mss_val_crr.vp=(void *)nco_malloc(att_sz*nco_typ_lng(var->type));
mss_val_new.vp=(void *)nco_malloc(aed.sz*nco_typ_lng(var->type));
(void)nco_val_cnf_typ(var->type,var->mss_val,var->type,mss_val_crr);
(void)nco_val_cnf_typ(aed.type,aed.val,var->type,mss_val_new);
/* Typecast pointer to values before access */
(void)cast_void_nctype(var->type,&var_val);
(void)cast_void_nctype(var->type,&mss_val_crr);
(void)cast_void_nctype(var->type,&mss_val_new);
switch(var->type){
case NC_FLOAT: for(idx=0L;idx<var_sz;idx++) {if(var_val.fp[idx] == *mss_val_crr.fp) var_val.fp[idx]=*mss_val_new.fp;} break;
case NC_DOUBLE: for(idx=0L;idx<var_sz;idx++) {if(var_val.dp[idx] == *mss_val_crr.dp) var_val.dp[idx]=*mss_val_new.dp;} break;
case NC_INT: for(idx=0L;idx<var_sz;idx++) {if(var_val.ip[idx] == *mss_val_crr.ip) var_val.ip[idx]=*mss_val_new.ip;} break;
case NC_SHORT: for(idx=0L;idx<var_sz;idx++) {if(var_val.sp[idx] == *mss_val_crr.sp) var_val.sp[idx]=*mss_val_new.sp;} break;
case NC_CHAR: for(idx=0L;idx<var_sz;idx++) {if(var_val.cp[idx] == *mss_val_crr.cp) var_val.cp[idx]=*mss_val_new.cp;} break;
case NC_BYTE: for(idx=0L;idx<var_sz;idx++) {if(var_val.bp[idx] == *mss_val_crr.bp) var_val.bp[idx]=*mss_val_new.bp;} break;
case NC_UBYTE: for(idx=0L;idx<var_sz;idx++) {if(var_val.ubp[idx] == *mss_val_crr.ubp) var_val.ubp[idx]=*mss_val_new.ubp;} break;
case NC_USHORT: for(idx=0L;idx<var_sz;idx++) {if(var_val.usp[idx] == *mss_val_crr.usp) var_val.usp[idx]=*mss_val_new.usp;} break;
case NC_UINT: for(idx=0L;idx<var_sz;idx++) {if(var_val.uip[idx] == *mss_val_crr.uip) var_val.uip[idx]=*mss_val_new.uip;} break;
case NC_INT64: for(idx=0L;idx<var_sz;idx++) {if(var_val.i64p[idx] == *mss_val_crr.i64p) var_val.i64p[idx]=*mss_val_new.i64p;} break;
case NC_UINT64: for(idx=0L;idx<var_sz;idx++) {if(var_val.ui64p[idx] == *mss_val_crr.ui64p) var_val.ui64p[idx]=*mss_val_new.ui64p;} break;
case NC_STRING: for(idx=0L;idx<var_sz;idx++) {if(var_val.sngp[idx] == *mss_val_crr.sngp) var_val.sngp[idx]=*mss_val_new.sngp;} break;
default: nco_dfl_case_nc_type_err(); break;
} /* end switch */
/* Un-typecast the pointer to values after access */
(void)cast_nctype_void(var->type,&var_val);
(void)cast_nctype_void(var->type,&mss_val_crr);
(void)cast_nctype_void(var->type,&mss_val_new);
/* Write to disk */
if(var->nbr_dim == 0){
(void)nco_put_var1(nc_id,var_id,var->srt,var->val.vp,var->type);
}else{ /* end if variable is scalar */
(void)nco_put_vara(nc_id,var_id,var->srt,var->cnt,var->val.vp,var->type);
} /* end else */
/* Free memory */
mss_val_crr.vp=nco_free(mss_val_crr.vp);
mss_val_new.vp=nco_free(mss_val_new.vp);
var->mss_val.vp=nco_free(var->mss_val.vp);
var->val.vp=nco_free(var->val.vp);
var->dmn_id=(int *)nco_free(var->dmn_id);
var->srt=(long *)nco_free(var->srt);
var->cnt=(long *)nco_free(var->cnt);
/* 20050704 try and use nco_free() to avoid valgrind error message */
var=(var_sct *)nco_free(var);
/* Put file back in define mode */
(void)nco_redef(nc_id);
} /* end if replacing missing value data */
/* Change metadata (as written, this must be done after _FillValue data is replaced) */
#ifdef NCO_NETCDF4_AND_FILLVALUE
/* Bold hack which gets around problem of modifying netCDF4 "_FillValue" attributes
netCDF4 does not allow this by default, though netCDF3 does
Change attribute name to att_nm_tmp, modify value, then restore name */
/* Check if file is netCDF3 classic with netCDF4 library
If so, do not kludge. NB: create global variable for output file format? */
{ /* scope for fl_fmt temporary */
int fl_fmt;
(void)nco_inq_format(nc_id,&fl_fmt);
flg_netCDF4=(fl_fmt==NC_FORMAT_NETCDF4 || fl_fmt==NC_FORMAT_NETCDF4_CLASSIC);
} /* end scope */
if(flg_netCDF4 && !strcmp(aed.att_nm,nco_mss_val_sng_get()) && aed.mode != aed_delete){
if(aed.mode != aed_create) (void)nco_rename_att(nc_id,var_id,aed.att_nm,att_nm_tmp);
strcpy(aed.att_nm,att_nm_tmp);
} /* endif libnetCDF may have netCDF4 restrictions */
#endif /* !NCO_NETCDF4_AND_FILLVALUE */
switch(aed.mode){
case aed_append:
if(rcd == NC_NOERR){
/* Append to existing attribute value */
if(aed.type != att_typ){
(void)fprintf(stdout,"%s: ERROR %s attribute %s is of type %s not %s, unable to append\n",prg_nm_get(),var_nm,aed.att_nm,nco_typ_sng(att_typ),nco_typ_sng(aed.type));
nco_exit(EXIT_FAILURE);
} /* end if */
att_val_new=(void *)nco_malloc((att_sz+aed.sz)*nco_typ_lng(aed.type));
(void)nco_get_att(nc_id,var_id,aed.att_nm,(void *)att_val_new,aed.type);
/* NB: Following assumes sizeof(char) = 1 byte */
(void)memcpy((void *)((char *)att_val_new+att_sz*nco_typ_lng(aed.type)),
(void *)aed.val.vp,
aed.sz*nco_typ_lng(aed.type));
(void)nco_put_att(nc_id,var_id,aed.att_nm,aed.type,att_sz+aed.sz,att_val_new);
att_val_new=nco_free(att_val_new);
}else{
/* Create new attribute */
(void)nco_put_att(nc_id,var_id,aed.att_nm,aed.type,aed.sz,aed.val.vp);
} /* end else */
break;
case aed_create:
if(rcd != NC_NOERR) (void)nco_put_att(nc_id,var_id,aed.att_nm,aed.type,aed.sz,aed.val.vp);
break;
case aed_delete:
/* Delete specified attribute if attribute name was specified... */
if(aed.att_nm){
/* ...and if attribute is known to exist from previous inquire call... */
if(rcd == NC_NOERR) (void)nco_del_att(nc_id,var_id,aed.att_nm);
}else{
/* ...else delete all attributes for this variable... */
while(nbr_att){
(void)nco_inq_attname(nc_id,var_id,nbr_att-1,att_nm);
(void)nco_del_att(nc_id,var_id,att_nm);
nbr_att--;
} /* end while */
} /* end else */
break;
case aed_modify:
if(rcd == NC_NOERR) (void)nco_put_att(nc_id,var_id,aed.att_nm,aed.type,aed.sz,aed.val.vp);
break;
case aed_overwrite:
(void)nco_put_att(nc_id,var_id,aed.att_nm,aed.type,aed.sz,aed.val.vp);
break;
default:
break;
} /* end switch */
#ifdef NCO_NETCDF4_AND_FILLVALUE
if(flg_netCDF4 && !strcmp(aed.att_nm,att_nm_tmp) && aed.mode != aed_delete){
(void)nco_rename_att(nc_id,var_id,att_nm_tmp,nco_mss_val_sng_get());
/* Restore original name (space already allocated) */
strcpy(aed.att_nm,nco_mss_val_sng_get());
} /* !flg_netCDF4 */
#endif /* !NCO_NETCDF4_AND_FILLVALUE */
} /* end nco_aed_prc() */
