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Diffstat (limited to 'HDF5Examples/FORTRAN/H5T/h5ex_t_enumatt_F03.F90')
-rw-r--r-- | HDF5Examples/FORTRAN/H5T/h5ex_t_enumatt_F03.F90 | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/HDF5Examples/FORTRAN/H5T/h5ex_t_enumatt_F03.F90 b/HDF5Examples/FORTRAN/H5T/h5ex_t_enumatt_F03.F90 new file mode 100644 index 0000000..ec641b3 --- /dev/null +++ b/HDF5Examples/FORTRAN/H5T/h5ex_t_enumatt_F03.F90 @@ -0,0 +1,154 @@ +!************************************************************ +! +! This example shows how to read and write enumerated +! datatypes to an attribute. The program first writes +! enumerated values to an attribute 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=21), PARAMETER :: filename = "h5ex_t_enumatt_F03.h5" + CHARACTER(LEN=3) , PARAMETER :: dataset = "DS1" + CHARACTER(LEN=2) , PARAMETER :: attribute = "A1" + 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, attr ! 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 with a null dataspace. + ! + CALL h5screate_f(H5S_NULL_F, space, hdferr) + CALL h5dcreate_f(file, dataset, H5T_STD_I32LE, space, dset, hdferr) + CALL h5sclose_f(space, hdferr) + ! + ! Create dataspace. Setting maximum size to be the current size. + ! + CALL h5screate_simple_f(2, dims, space, hdferr) + ! + ! Create the attribute and write the enumerated data to it. + ! + CALL h5acreate_f(dset, attribute, filetype, space, attr, hdferr) + f_ptr = C_LOC(wdata(1,1)) + CALL h5awrite_f(attr, memtype, f_ptr, hdferr) + ! + ! Close and release resources. + ! + CALL h5aclose_f(attr, hdferr) + 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, and attribute. + ! + CALL h5fopen_f(filename, H5F_ACC_RDONLY_F, file, hdferr) + CALL h5dopen_f(file, dataset, dset, hdferr) + CALL h5aopen_f(dset, attribute, attr, hdferr) + ! + ! Get dataspace and allocate memory for read buffer. + ! + CALL h5aget_space_f(attr, 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 h5aread_f( attr, memtype, f_ptr, hdferr) + ! + ! Output the data to the screen. + ! + WRITE(*, '(A,":")') attribute + 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 h5aclose_f(attr , hdferr) + CALL h5dclose_f(dset , hdferr) + CALL h5sclose_f(space, hdferr) + CALL h5tclose_f(memtype, hdferr) + CALL h5fclose_f(file , hdferr) +END PROGRAM main |