mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-11-21 03:13:42 +08:00
5ca78309cc
contain as little file-type specific info as possible. It modifies especially libsrc so that all of the netcdf-3 data that used to be in struct NC is now kept in a separate chunk of data pointed to by the struct NC. This makes all of current protocols consistent: netcdf-3, netcdf-4, and dap.
89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/*
|
|
* Copyright 1996, University Corporation for Atmospheric Research
|
|
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
|
|
*/
|
|
#ifndef _NC_H_
|
|
#define _NC_H_
|
|
|
|
#include "config.h"
|
|
#include "netcdf.h"
|
|
|
|
/* There's an external ncid (ext_ncid) and an internal ncid
|
|
* (int_ncid). The ext_ncid is the ncid returned to the user. If
|
|
* the user has opened or created a netcdf-4 file, then the
|
|
* ext_ncid is the same as the int_ncid. If he has opened or
|
|
* created a netcdf-3 file ext_ncid (which the user sees) is
|
|
* different from the int_ncid, which is the ncid returned by the
|
|
* netcdf-3 layer, which insists on inventing its own ncids,
|
|
* regardless of what is already in use due to previously opened
|
|
* netcdf-4 files. The ext_ncid contains the ncid for the root
|
|
* group (i.e. group zero). */
|
|
|
|
/* Common Shared Structure for all Dispatched Objects */
|
|
typedef struct NC {
|
|
int ext_ncid;
|
|
int int_ncid;
|
|
struct NC_Dispatch* dispatch;
|
|
void* dispatchdata; /*per-'file' data; points to e.g. NC3_INFO data*/
|
|
char* path;
|
|
int substrate;
|
|
#if 0
|
|
void* instance;
|
|
#endif
|
|
} NC;
|
|
|
|
/*
|
|
* Counted string for names and such
|
|
*/
|
|
typedef struct {
|
|
/* all xdr'd */
|
|
size_t nchars;
|
|
char *cp;
|
|
} NC_string;
|
|
|
|
/* Define functions that are used across multiple dispatchers */
|
|
|
|
/* Begin defined in string.c */
|
|
extern void
|
|
free_NC_string(NC_string *ncstrp);
|
|
|
|
extern int
|
|
NC_check_name(const char *name);
|
|
|
|
extern NC_string *
|
|
new_NC_string(size_t slen, const char *str);
|
|
|
|
extern int
|
|
set_NC_string(NC_string *ncstrp, const char *str);
|
|
|
|
/* End defined in string.c */
|
|
|
|
extern int
|
|
NC_check_id(int ncid, NC **ncpp);
|
|
|
|
/* Create a pseudo file descriptor that does not
|
|
overlap real file descriptors */
|
|
extern int nc__pseudofd(void);
|
|
|
|
/* This function sets a default create flag that will be logically
|
|
or'd to whatever flags are passed into nc_create for all future
|
|
calls to nc_create.
|
|
Valid default create flags are NC_64BIT_OFFSET, NC_CLOBBER,
|
|
NC_LOCK, NC_SHARE. */
|
|
extern int nc_set_default_format(int format, int *old_formatp);
|
|
|
|
/* This function gets a current default create flag */
|
|
extern int nc_get_default_format(void);
|
|
|
|
extern int add_to_NCList(NC*);
|
|
extern void del_from_NCList(NC*);/* does not free object */
|
|
extern NC* find_in_NCList(int ext_ncid);
|
|
extern void free_NCList(void);/* reclaim whole list */
|
|
extern int count_NCList(void); /* return # of entries in NClist */
|
|
|
|
/* Defined in nc.c */
|
|
extern void free_NC(NC*);
|
|
extern int new_NC(struct NC_Dispatch*, const char*, NC**);
|
|
|
|
#endif /* _NC_H_ */
|