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+!************************************************************
+!
+! This example shows how to read and write enumerated
+! datatypes to a dataset. The program first writes
+! enumerated values to a dataset with a dataspace of
+! DIM0xDIM1, then closes the file. Next, it reopens the
+! file, reads back the data, and outputs it to the screen.
+!
+! This file is intended for use with HDF5 Library version 1.8
+! with --enable-fortran2003
+!
+!************************************************************
+PROGRAM main
+
+ USE HDF5
+ USE ISO_C_BINDING
+
+ IMPLICIT NONE
+ CHARACTER(LEN=19), PARAMETER :: filename = "h5ex_t_enum_F03.h5"
+ CHARACTER(LEN=3) , PARAMETER :: dataset = "DS1"
+ INTEGER , PARAMETER :: dim0 = 4
+ INTEGER , PARAMETER :: dim1 = 7
+ INTEGER(HID_T) :: F_BASET ! File base type
+ INTEGER(HID_T) :: M_BASET ! Memory base type
+ INTEGER(SIZE_T) , PARAMETER :: NAME_BUF_SIZE = 16
+
+! Enumerated type
+ ENUM, BIND(C)
+ ENUMERATOR :: SOLID = 0, LIQUID, GAS, PLASMA
+ END ENUM
+
+ INTEGER(HID_T) :: file, filetype, memtype, space, dset ! Handles
+ INTEGER :: hdferr
+
+ INTEGER(hsize_t), DIMENSION(1:2) :: dims = (/dim0, dim1/)
+ INTEGER(kind(SOLID)), DIMENSION(1:dim0, 1:dim1), TARGET :: wdata ! Write buffer
+ INTEGER(kind(SOLID)), DIMENSION(:,:), ALLOCATABLE, TARGET :: rdata ! Read buffer
+ INTEGER(kind(SOLID)), TARGET :: val
+
+ CHARACTER(LEN=6), DIMENSION(1:4) :: &
+ names = (/"SOLID ", "LIQUID", "GAS ", "PLASMA"/)
+ CHARACTER(LEN=NAME_BUF_SIZE) :: name
+ INTEGER(HSIZE_T), DIMENSION(1:2) :: maxdims
+ INTEGER(kind(SOLID)) :: i, j
+ TYPE(C_PTR) :: f_ptr
+ !
+ ! Initialize FORTRAN interface.
+ !
+ CALL h5open_f(hdferr)
+ !
+ ! Initialize DATA.
+ !
+ F_BASET = H5T_STD_I16BE ! File base type
+ M_BASET = h5kind_to_type(kind(SOLID), H5_INTEGER_KIND) ! Memory base type
+ DO i = 1, dim0
+ DO j = 1, dim1
+ wdata(i,j) = MOD( (j-1)*(i-1), PLASMA+1)
+ ENDDO
+ ENDDO
+ !
+ ! Create a new file using the default properties.
+ !
+ CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file, hdferr)
+ !
+ ! Create the enumerated datatypes for file and memory. This
+ ! process is simplified if native types are used for the file,
+ ! as only one type must be defined.
+ !
+ CALL h5tenum_create_f (F_BASET, filetype, hdferr)
+ CALL h5tenum_create_f (M_BASET, memtype, hdferr)
+
+ DO i = SOLID, PLASMA
+ !
+ ! Insert enumerated value for memtype.
+ !
+ val = i
+ CALL h5tenum_insert_f(memtype, TRIM(names(i+1)), val, hdferr)
+ !
+ ! Insert enumerated value for filetype. We must first convert
+ ! the numerical value val to the base type of the destination.
+ !
+ f_ptr = C_LOC(val)
+ CALL h5tconvert_f (M_BASET, F_BASET, INT(1,SIZE_T), f_ptr, hdferr)
+ CALL h5tenum_insert_f(filetype, TRIM(names(i+1)), val, hdferr)
+ ENDDO
+ !
+ ! Create dataspace. Setting maximum size to be the current size.
+ !
+ CALL h5screate_simple_f(2, dims, space, hdferr)
+ !
+ ! Create the dataset and write the enumerated data to it.
+ !
+ CALL h5dcreate_f(file, dataset, filetype, space, dset, hdferr)
+ f_ptr = C_LOC(wdata(1,1))
+ CALL h5dwrite_f(dset, memtype, f_ptr, hdferr)
+ !
+ ! Close and release resources.
+ !
+ CALL h5dclose_f(dset , hdferr)
+ CALL h5sclose_f(space, hdferr)
+ CALL h5tclose_f(filetype, hdferr)
+ CALL h5fclose_f(file , hdferr)
+
+ !
+ ! Now we begin the read section of this example.
+ !
+ ! Open file and dataset.
+ !
+ CALL h5fopen_f(filename, H5F_ACC_RDONLY_F, file, hdferr)
+ CALL h5dopen_f (file, dataset, dset, hdferr)
+ !
+ ! Get dataspace and allocate memory for read buffer.
+ !
+ CALL h5dget_space_f(dset,space, hdferr)
+ CALL h5sget_simple_extent_dims_f (space, dims, maxdims, hdferr)
+ ALLOCATE(rdata(1:dims(1),1:dims(2)))
+ !
+ ! Read the data.
+ !
+ f_ptr = C_LOC(rdata(1,1))
+ CALL h5dread_f(dset, memtype, f_ptr, hdferr)
+ !
+ ! Output the data to the screen.
+ !
+ WRITE(*, '(A,":")') dataset
+ DO i=1, dims(1)
+ WRITE(*,'(" [")', ADVANCE='NO')
+ DO j = 1, dims(2)
+ !
+ ! Get the name of the enumeration member.
+ !
+ CALL h5tenum_nameof_f( memtype, rdata(i,j), NAME_BUF_SIZE, name, hdferr)
+ WRITE(*,'(" ", A6," ")', ADVANCE='NO') TRIM(NAME)
+ ENDDO
+ WRITE(*,'("]")')
+ ENDDO
+ !
+ ! Close and release resources.
+ !
+ DEALLOCATE(rdata)
+ CALL h5dclose_f(dset , hdferr)
+ CALL h5sclose_f(space, hdferr)
+ CALL h5tclose_f(memtype, hdferr)
+ CALL h5fclose_f(file , hdferr)
+END PROGRAM main