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102 lines
4.0 KiB
C
102 lines
4.0 KiB
C
/*********************************************************************
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* Copyright 2018, University Corporation for Atmospheric
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* Research/Unidata. See \ref copyright file for copying and
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* redistribution conditionsmore information.
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*********************************************************************/
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#ifndef _NCCOMPS_H_
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#define _NCCOMPS_H_
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typedef struct { /* dimension */
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char name[NC_MAX_NAME];
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size_t size;
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} ncdim_t;
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/* forward declarations */
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struct nctype_t;
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struct ncvar_t;
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struct timeinfo_t;
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/*
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* Member function to determine if values for this type are equal,
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* used to compare with fill value.
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*/
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typedef bool_t (*val_equals_func)(const struct nctype_t *this,
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const void *v1p, const void *v2p);
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/*
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* Member function to convert value of this type to a string. Returns
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* number of bytes in output string sb (not including trailing null)
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*/
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typedef int (*typ_tostring_func)(const struct nctype_t *this,
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struct safebuf_t *sb,
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const void *valp);
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/*
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* Per-variable member function to convert value of this type to a
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* string. Returns number of bytes in output string sb (not
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* including trailing null). This is needed because a variable
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* can override its type for output, if a variable-specific format
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* is specified in an attribute.
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*/
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typedef int (*val_tostring_func)(const struct ncvar_t *this,
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struct safebuf_t *sb,
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const void *valp);
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typedef struct nctype_t { /* type */
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int ncid; /* group in which type is defined */
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nc_type tid; /* type ID */
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char *name; /* relative name of type within its group */
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char *grps; /* full prefix for type name, eg "grp1/grp2" */
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int class; /* > 0 for netCDF-4 user-defined types */
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size_t size; /* like sizeof, even for user-defined types */
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nc_type base_tid; /* for netCDF-4 enums, vlens */
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size_t nfields; /* for netCDF-4 compound types */
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const char *fmt; /* if non-null, format for printing values */
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nc_type *fids; /* type id for each field of compound type */
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size_t *offsets; /* offsets for each field of compound type */
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int *ranks; /* rank for each field of compound type */
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int **sides; /* rank sizes for each field where rank > 0 */
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int *nvals; /* num of values for each field (prod of sides) */
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/* member functions */
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val_equals_func val_equals; /* function to compare 2 values for equality */
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typ_tostring_func typ_tostring; /* default function to convert
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* value to string for output (can
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* be overridden by per-variable
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* function, if fmt attribute
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* is specified for a variable) */
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} nctype_t;
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typedef struct ncvar_t { /* variable */
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char name[NC_MAX_NAME];
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nc_type type;
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struct nctype_t *tinfo; /* full type information */
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int ndims; /* number of dimensions (rank) */
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int *dims; /* dimension ids */
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int natts; /* number of attributes */
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bool_t has_fillval; /* has a fill value defined? */
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void* fillvalp; /* pointer to the fill value, if any */
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bool_t has_timeval; /* has date-time values, for -t output option */
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struct timeinfo_t *timeinfo;/* if time values, units, calendar, and origin */
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bool_t is_bnds_var; /* cell bounds variable, inherits timeinfo */
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const char *fmt; /* overriding variable-specific format for
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printing values or base values, if any */
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int locid; /* group id */
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/* member functions */
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val_tostring_func val_tostring; /* function to convert value to string for
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output */
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} ncvar_t;
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typedef struct ncatt_t { /* attribute */
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int var;
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char name[NC_MAX_NAME];
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nc_type type;
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nctype_t *tinfo;
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size_t len;
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char *string; /* for NcML text attributes (type = NC_CHAR)
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* TODO: eliminate and just use valgp */
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double *vals; /* for NcML numeric attributes of all types
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* TODO: eliminate and just use valgp */
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void *valgp; /* generic pointer to values of any type */
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} ncatt_t;
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#endif /*_NCCOMPS_H_ */
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