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89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/**
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* @internal
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*
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* Copyright 2018, University Corporation for Atmospheric
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* Research. See netcdf-4/docs/COPYRIGHT file for copying and
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* redistribution conditions.
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*
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* This file is part of netcdf-4, a netCDF-like interface for HDF5, or a
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* HDF5 backend for netCDF, depending on your point of view.
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*
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* This file handles the inq_format functions.
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*
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* @author Ed Hartnett, Dennis Heimbigner
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*/
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#include "nc4internal.h"
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#include "nc4dispatch.h"
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/**
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* @internal Get the format (i.e. NC_FORMAT_NETCDF4 pr
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* NC_FORMAT_NETCDF4_CLASSIC) of an open netCDF-4 file.
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*
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* @param ncid File ID (ignored).
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* @param formatp Pointer that gets the constant indicating format.
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* @return ::NC_NOERR No error.
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* @return ::NC_EBADID Bad ncid.
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* @author Ed Hartnett
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*/
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int
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NC4_inq_format(int ncid, int *formatp)
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{
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NC_FILE_INFO_T *nc4_info;
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int retval;
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LOG((2, "nc_inq_format: ncid 0x%x", ncid));
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if (!formatp)
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return NC_NOERR;
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/* Find the file metadata. */
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if ((retval = nc4_find_nc_grp_h5(ncid, NULL, NULL, &nc4_info)))
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return retval;
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/* Check if classic NC3 rules are in effect for this file. */
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if (nc4_info->cmode & NC_CLASSIC_MODEL)
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*formatp = NC_FORMAT_NETCDF4_CLASSIC;
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else
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*formatp = NC_FORMAT_NETCDF4;
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return NC_NOERR;
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}
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/**
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* @internal Return the extended format (i.e. the dispatch model),
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* plus the mode associated with an open file.
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*
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* @param ncid File ID (ignored).
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* @param formatp a pointer that gets the extended format. Note that
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* this is not the same as the format provided by nc_inq_format(). The
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* extended format indicates the dispatch layer model. NetCDF-4 files
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* will always get NC_FORMATX_NC4.
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* @param modep a pointer that gets the open/create mode associated with
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* this file. Ignored if NULL.
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* @return ::NC_NOERR No error.
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* @return ::NC_EBADID Bad ncid.
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* @author Dennis Heimbigner
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*/
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int
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NC4_inq_format_extended(int ncid, int *formatp, int *modep)
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{
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NC *nc;
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int retval;
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LOG((2, "%s: ncid 0x%x", __func__, ncid));
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if ((retval = nc4_find_nc_grp_h5(ncid, &nc, NULL, NULL)))
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return NC_EBADID;
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if(modep)
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*modep = nc->mode|NC_NETCDF4;
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if (formatp)
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*formatp = NC_FORMATX_NC_HDF5;
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return NC_NOERR;
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}
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