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C This is part of the netCDF package.
C Copyright 2008 University Corporation for Atmospheric Research/Unidata.
C See COPYRIGHT file for conditions of use.
C This program tests netCDF-4 variable functions from fortran,
C testing VLEN types.
C Ed Hartnett, 2009
program ftst_vars4
implicit none
include 'netcdf.inc'
C This is the name of the data file we will create.
character*(*) FILE_NAME
parameter (FILE_NAME='ftst_vars4.nc')
C NetCDF IDs.
integer ncid, vlen_typeid
integer max_types
parameter (max_types = 1)
C Need these to read type information.
integer num_types, typeids(max_types)
integer base_type, base_size, num_members, member_value
character*80 type_name, member_name
integer type_size, nfields, class
C Information for the vlen type we will define.
character*(*) vlen_type_name
parameter (vlen_type_name = 'vlen_type')
C Some data about and for the vlen.
integer vlen_len, vlen_len_in
parameter (vlen_len = 5)
integer data1(vlen_len), data1_in(vlen_len)
C These must be big enough to hold the struct nc_vlen in netcdf.h.
integer*8 vlen(10), vlen_in(10)
C Loop indexes, and error handling.
integer x, retval, index(1)
print *, ''
print *,'*** Testing VLEN types.'
do x = 1, vlen_len
data1(x) = x
end do
C Create the netCDF file.
retval = nf_create(FILE_NAME, NF_NETCDF4, ncid)
if (retval .ne. nf_noerr) stop 1
C Create the vlen type.
retval = nf_def_vlen(ncid, vlen_type_name, nf_int, vlen_typeid)
if (retval .ne. nf_noerr) stop 1
C Set up the vlen with this helper function, since F77 can't deal
C with pointers.
retval = nf_put_vlen_element(ncid, vlen_typeid, vlen,
& vlen_len, data1)
if (retval .ne. nf_noerr) stop 1
C Write the vlen attribute.
retval = nf_put_att(ncid, NF_GLOBAL, 'att1', vlen_typeid, 1, vlen)
if (retval .ne. nf_noerr) stop 1
C Close the file.
retval = nf_close(ncid)
if (retval .ne. nf_noerr) stop 1
C Reopen the file.
retval = nf_open(FILE_NAME, NF_NOWRITE, ncid)
if (retval .ne. nf_noerr) stop 1
C Get the typeids of all user defined types.
retval = nf_inq_typeids(ncid, num_types, typeids)
if (retval .ne. nf_noerr) stop 1
if (num_types .ne. max_types) stop 2
C Use nf_inq_user_type to confirm this is an vlen type, with base
C type NF_INT.
retval = nf_inq_user_type(ncid, typeids(1), type_name, type_size,
& base_type, nfields, class)
if (retval .ne. nf_noerr) stop 1
if (type_name(1:len(vlen_type_name)) .ne. vlen_type_name .or.
& base_type .ne. nf_int .or.
& nfields .ne. 0 .or. class .ne. nf_vlen) stop 2
C Use nf_inq_vlen and make sure we get the same answers as we did
C with nf_inq_user_type.
retval = nf_inq_vlen(ncid, typeids(1), type_name, base_size,
& base_type)
if (retval .ne. nf_noerr) stop 1
if (type_name(1:len(vlen_type_name)) .ne. vlen_type_name .or.
& base_type .ne. nf_int) stop 2
C Read the vlen attribute.
retval = nf_get_att(ncid, NF_GLOBAL, 'att1', vlen_in)
if (retval .ne. nf_noerr) stop 1
C Get the data from the vlen we just read.
retval = nf_get_vlen_element(ncid, vlen_typeid, vlen_in,
& vlen_len_in, data1_in)
if (retval .ne. nf_noerr) stop 1
if (vlen_len_in .ne. vlen_len) stop 2
C Check the data
do x = 1, vlen_len
if (data1(x) .ne. data1_in(x)) stop 2
end do
C Close the file.
retval = nf_close(ncid)
if (retval .ne. nf_noerr) stop 1
print *,'*** SUCCESS!'
end
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