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! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
!   Copyright by The HDF Group.                                               *
!   Copyright by the Board of Trustees of the University of Illinois.         *
!   All rights reserved.                                                      *
!                                                                             *
!   This file is part of HDF5.  The full HDF5 copyright notice, including     *
!   terms governing use, modification, and redistribution, is contained in    *
!   the COPYING file, which can be found at the root of the source code       *
!   distribution tree, or in https://www.hdfgroup.org/licenses.               *
!   If you do not have access to either file, you may request a copy from     *
!   help@hdfgroup.org.                                                        *
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
!
!
! This file contains FORTRAN90 interfaces for H5DS functions
!

MODULE h5ds

  USE, INTRINSIC :: ISO_C_BINDING, ONLY : C_PTR, C_CHAR, C_FLOAT, C_DOUBLE, C_LOC, C_CHAR
  USE h5fortran_types
  USE hdf5

CONTAINS

!-------------------------------------------------------------------------
! Function: H5DSset_scale_f
!
! Purpose: Convert dataset dsid to a dimension scale, with optional name, dimname.
!
! Return: Success: 0, Failure: -1
!
! Programmer: M. Scot Breitenfeld
!
! Date: April 17, 2011
!
! Comments:
!
! Modifications:
!
!-------------------------------------------------------------------------

  SUBROUTINE H5DSset_scale_f( dsid, errcode, dimname)

    IMPLICIT NONE

    INTEGER(hid_t),   INTENT(in) :: dsid               ! The dataset to be made a Dimension Scale
    CHARACTER(LEN=*), INTENT(in), OPTIONAL :: dimname  ! The dimension name
    INTEGER :: errcode                                 ! Error code

    INTEGER(SIZE_T) :: dimname_len                     ! length of dimname (if present)

    INTERFACE
       INTEGER FUNCTION H5DSset_scale_c(dsid, dimname, dimname_len) &
            BIND(C,NAME='h5dsset_scale_c')
         IMPORT :: C_CHAR
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         INTEGER(hid_t),   INTENT(in) :: dsid     ! The dataset to be made a Dimension Scale
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(in) :: dimname  ! The dimension name
         INTEGER(SIZE_T),  INTENT(in) :: dimname_len
       END FUNCTION H5DSset_scale_c
    END INTERFACE

    IF(PRESENT(dimname))THEN
       dimname_len = LEN(dimname)
       errcode = H5DSset_scale_c(dsid, dimname, dimname_len )
    ELSE
       errcode = H5DSset_scale_c(dsid, " ", INT(0,SIZE_T) )
    ENDIF

  END SUBROUTINE H5DSset_scale_f

!-------------------------------------------------------------------------
! Function: H5DSattach_scale_f
!
! Purpose: Attach dimension scale dsid to dimension idx of dataset did.
!
! Return: Success: 0, Failure: -1
!
! Programmer: M. Scot Breitenfeld
!
! Date: April 17, 2011
!
! Comments:
!
! Modifications:
!
!-------------------------------------------------------------------------

  SUBROUTINE H5DSattach_scale_f( did, dsid, idx, errcode)

    IMPLICIT NONE

    INTEGER(hid_t), INTENT(in) :: did     ! the dataset
    INTEGER(hid_t), INTENT(in) :: dsid    ! the scale to be attached
    INTEGER       , INTENT(in) :: idx     ! the dimension of did that dsid is associated with.
    INTEGER                    :: errcode ! error code
    INTEGER                    :: c_idx

    INTERFACE
       INTEGER FUNCTION  H5DSattach_scale_c(did, dsid, idx) &
            BIND(C,NAME='h5dsattach_scale_c')
         IMPORT :: HID_T
         IMPLICIT NONE
         INTEGER(hid_t), INTENT(in) :: did     ! the dataset
         INTEGER(hid_t), INTENT(in) :: dsid    ! the scale to be attached
         INTEGER       , INTENT(in) :: idx     ! the dimension of did that dsid is associated with.
       END FUNCTION H5DSattach_scale_c
    END INTERFACE

    c_idx = idx -1 ! account for C-dimensions starting at 0

    errcode = H5DSattach_scale_c( did, dsid, c_idx)

  END SUBROUTINE H5DSattach_scale_f

!-------------------------------------------------------------------------
! Function: H5DSdetach_scale_f
!
! Purpose: Detach dimension scale dsid from the dimension idx of Dataset did.
!
! Return: Success: 0, Failure: -1
!
! Programmer: M. Scot Breitenfeld
!
! Date: April 17, 2011
!
! Comments:
!
! Modifications:
!
!-------------------------------------------------------------------------

  SUBROUTINE H5DSdetach_scale_f( did, dsid, idx, errcode)

    IMPLICIT NONE

    INTEGER(hid_t), INTENT(in) :: did     ! the dataset
    INTEGER(hid_t), INTENT(in) :: dsid    ! the scale to be detached
    INTEGER       , INTENT(in) :: idx     ! the dimension of did to detach
    INTEGER                    :: errcode ! error code
    INTEGER                    :: c_idx

    INTERFACE
       INTEGER FUNCTION  H5DSdetach_scale_c(did, dsid, idx) &
            BIND(C,NAME='h5dsdetach_scale_c')
         IMPORT :: HID_T
         IMPLICIT NONE
         INTEGER(hid_t), INTENT(in) :: did     ! the dataset
         INTEGER(hid_t), INTENT(in) :: dsid    ! the scale to be detached
         INTEGER       , INTENT(in) :: idx     ! the dimension of did to detach
       END FUNCTION H5DSdetach_scale_c
    END INTERFACE

    c_idx = idx - 1 ! account for C-dimensions starting at 0

    errcode = H5DSdetach_scale_c( did, dsid, c_idx)

  END SUBROUTINE H5DSdetach_scale_f


!-------------------------------------------------------------------------
! Function: H5DSis_attached_f
!
! Purpose: Report if dimension scale dsid is currently attached to dimension idx of dataset did.
!
! Return: Success: 0, Failure: -1
!
! Programmer: M. Scot Breitenfeld
!
! Date: April 17, 2011
!
! Comments:
!
! Modifications:
!
!-------------------------------------------------------------------------

  SUBROUTINE H5DSis_attached_f( did, dsid, idx, is_attached, errcode)

    IMPLICIT NONE

    INTEGER(hid_t), INTENT(in)  :: did         ! the dataset
    INTEGER(hid_t), INTENT(in)  :: dsid        ! the scale to be attached
    INTEGER       , INTENT(in)  :: idx         ! the dimension of did that dsid is associated with
    LOGICAL       , INTENT(out) :: is_attached ! logical: dimension scale dsid is currently attached to
                                               ! dimension idx of dataset did
    INTEGER                     :: errcode     ! error code
    INTEGER                     :: c_is_attached
    INTEGER                     :: c_idx

    INTERFACE
       INTEGER FUNCTION H5DSis_attached_c(did, dsid, idx, c_is_attached) &
            BIND(C,NAME='h5dsis_attached_c')
         IMPORT :: HID_T
         IMPLICIT NONE
         INTEGER(hid_t), INTENT(in)  :: did         ! the dataset
         INTEGER(hid_t), INTENT(in)  :: dsid        ! the scale to be detached
         INTEGER       , INTENT(in)  :: idx         ! the dimension of did to detach
         INTEGER       , INTENT(out) :: c_is_attached ! dimension scale dsid is currently attached to
       END FUNCTION H5DSis_attached_c
    END INTERFACE

    c_idx = idx - 1 ! account for C-dimensions starting at 0

    errcode = H5DSis_attached_c(did, dsid, c_idx, c_is_attached)

    is_attached = .FALSE. ! default
    IF(c_is_attached.GT.0)THEN
       is_attached = .TRUE.
    ELSE IF(errcode.LT.0)THEN
       errcode = -1
    ENDIF

  END SUBROUTINE H5DSis_attached_f

!
! H5DSiterate_scales: Implement in  F2003
!

!-------------------------------------------------------------------------
! Function: H5DSis_scale_f
!
! Purpose: Determines whether dset is a Dimension Scale.
!
! Return: Success: 0, Failure: -1
!
! Programmer: M. Scot Breitenfeld
!
! Date: April 18, 2011
!
! Comments:
!
! Modifications:
!
!-------------------------------------------------------------------------

  SUBROUTINE H5DSis_scale_f( did, is_scale, errcode)

    IMPLICIT NONE

    INTEGER(hid_t), INTENT(in)  :: did         ! the data set to query
    LOGICAL       , INTENT(out) :: is_scale    ! logical:
                                               ! .TRUE. if did is a Dimension Scale
    INTEGER                     :: errcode     ! error code
    INTEGER                     :: c_is_scale

    INTERFACE
       INTEGER FUNCTION H5DSis_scale_c(did,c_is_scale) &
            BIND(C,NAME='h5dsis_scale_c')
         IMPORT :: HID_T
         IMPLICIT NONE
         INTEGER(hid_t), INTENT(in) :: did
         INTEGER, INTENT(out) :: c_is_scale
       END FUNCTION H5DSis_scale_c
    END INTERFACE

    errcode = H5DSis_scale_c(did, c_is_scale)

    is_scale = .FALSE. ! default
    IF(c_is_scale.GT.0)THEN
       is_scale = .TRUE.
    ELSE IF(errcode.LT.0)THEN
       errcode = -1
    ENDIF

  END SUBROUTINE H5DSis_scale_f

!-------------------------------------------------------------------------
! Function: H5DSset_label_f
!
! Purpose: Set label for the dimension idx of did to the value label
!
! Return: Success: 0, Failure: -1
!
! Programmer: M. Scot Breitenfeld
!
! Date: April 18, 2011
!
! Comments:
!
! Modifications:
!
!-------------------------------------------------------------------------

  SUBROUTINE H5DSset_label_f( did, idx, label, errcode)

    IMPLICIT NONE

    INTEGER(hid_t),   INTENT(in) :: did    ! The dataset
    INTEGER       ,   INTENT(in) :: idx    ! The dimension
    CHARACTER(LEN=*), INTENT(in) :: label  ! The label
    INTEGER :: errcode                     ! Error code

    INTEGER(SIZE_T) :: label_len  ! Length of label
    INTEGER :: c_idx

    INTERFACE
       INTEGER FUNCTION H5DSset_label_c(did, idx, label, label_len) &
            BIND(C,NAME='h5dsset_label_c')
         IMPORT :: C_CHAR
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         INTEGER(hid_t),   INTENT(in) :: did        ! The dataset
         INTEGER       ,   INTENT(in) :: idx        ! The dimension
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(in) :: label ! The label
         INTEGER(SIZE_T),  INTENT(in) :: label_len  ! Length of label
       END FUNCTION H5DSset_label_c
    END INTERFACE

    c_idx = idx - 1

    label_len = LEN(label)
    errcode = H5DSset_label_c(did, c_idx, label, label_len)

  END SUBROUTINE H5DSset_label_f

!-------------------------------------------------------------------------
! Function: H5DSget_label_f
!
! Purpose: Read the label for dimension idx of did into buffer label.
!
! Return: Success: 0, Failure: -1
!
! Programmer: M. Scot Breitenfeld
!
! Date: April 18, 2011
!
! Comments:
!
! Modifications:
!
!-------------------------------------------------------------------------

  SUBROUTINE H5DSget_label_f( did, idx, label, size, errcode)

    IMPLICIT NONE

    INTEGER(hid_t),   INTENT(in) :: did      ! The dataget
    INTEGER       ,   INTENT(in) :: idx      ! The dimension
    CHARACTER(LEN=*), INTENT(INOUT) :: label ! The label
    INTEGER(size_t) , INTENT(INOUT) :: size  ! The length of the label buffer
    INTEGER :: errcode                       ! Error code
    INTEGER :: c_idx

    INTERFACE
       INTEGER FUNCTION H5DSget_label_c(did, idx, label, size) &
            BIND(C,NAME='h5dsget_label_c')
         IMPORT :: C_CHAR
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         INTEGER(hid_t),   INTENT(in)    :: did        ! The dataget
         INTEGER       ,   INTENT(in)    :: idx        ! The dimension
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(INOUT) :: label ! The label
         INTEGER(SIZE_T),  INTENT(inout) :: size       ! Length of label
       END FUNCTION H5DSget_label_c
    END INTERFACE

    c_idx = idx - 1

    errcode = H5DSget_label_c(did, c_idx, label, size)

  END SUBROUTINE H5DSget_label_f


!-------------------------------------------------------------------------
! Function: H5DSget_scale_name_f
!
! Purpose: Read the name of scale did into buffer name.
!
! Return: Success: 0, Failure: -1
!
! Programmer: M. Scot Breitenfeld
!
! Date: April 18, 2011
!
! Comments:
!
! Modifications:
!
!-------------------------------------------------------------------------

  SUBROUTINE H5DSget_scale_name_f(did, name, size, errcode)

    IMPLICIT NONE

    INTEGER(hid_t),   INTENT(in) :: did     ! The dataget
    CHARACTER(LEN=*), INTENT(INOUT) :: name ! The name
    INTEGER(size_t) , INTENT(INOUT) :: size ! The length of the name buffer
    INTEGER :: errcode                      ! Error code

    INTERFACE
       INTEGER FUNCTION H5DSget_scale_name_c(did, name, size) &
            bind(c,name='h5dsget_scale_name_c')
         IMPORT :: C_CHAR
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         INTEGER(hid_t),   INTENT(in)    :: did       ! The dataget
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(INOUT) :: name ! The name
         INTEGER(SIZE_T),  INTENT(inout) :: size      ! Length of name
       END FUNCTION H5DSget_scale_name_c
    END INTERFACE

    errcode = H5DSget_scale_name_c(did, name, size)

  END SUBROUTINE H5DSget_scale_name_f

!-------------------------------------------------------------------------
! Function: H5DSget_num_scales_f
!
! Purpose: Determines how many Dimension Scales are attached to dimension idx of did
!
! Return: Success: 0, Failure: -1
!
! Programmer: M. Scot Breitenfeld
!
! Date: April 18, 2011
!
! Comments:
!
! Modifications:
!
!-------------------------------------------------------------------------

  SUBROUTINE H5DSget_num_scales_f( did, idx, num_scales, errcode)

    IMPLICIT NONE
    INTEGER(hid_t), INTENT(in)  :: did          ! the dataset
    INTEGER       , INTENT(in)  :: idx          ! the dimension of did to query
    INTEGER       , INTENT(INOUT) :: num_scales ! the number of Dimension Scales associated with did
    INTEGER                     :: errcode      ! error code
    INTEGER                     :: c_idx

    INTERFACE
       INTEGER FUNCTION H5DSget_num_scales_c(did, idx, num_scales) &
            BIND(C,NAME='h5dsget_num_scales_c')
         IMPORT :: HID_T
         IMPLICIT NONE
         INTEGER(hid_t), INTENT(in)  :: did          ! the dataset
         INTEGER       , INTENT(in)  :: idx          ! the dimension of did to query
         INTEGER       , INTENT(INOUT) :: num_scales ! the number of Dimension Scales associated with did
       END FUNCTION H5DSget_num_scales_c
    END INTERFACE

    c_idx = idx - 1
    errcode = H5DSget_num_scales_c(did, c_idx, num_scales)

  END SUBROUTINE H5DSget_num_scales_f

END MODULE h5ds