120 lines
4.0 KiB
Fortran
120 lines
4.0 KiB
Fortran
!
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! Copyright (c) 2006-2015, The Regents of the University of California,
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! through Lawrence Berkeley National Laboratory (subject to receipt of any
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! required approvals from the U.S. Dept. of Energy) and the Paul Scherrer
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! Institut (Switzerland). All rights reserved.!
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!
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! License: see file COPYING in top level of source distribution.
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!
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include 'H5hut.f90'
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program read_step_attribs
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use H5hut
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implicit none
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#if defined(PARALLEL_IO)
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include 'mpif.h'
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#endif
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! the file name we want to read
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character (len=*), parameter :: FNAME = "example_file_attribs.h5"
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! verbosity level: set it to a power of 2 minus one or zero
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integer*8, parameter :: verbosity_level = 1
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! we know the attribute names!
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character (len=*), parameter :: ATTR_STRING = "StepAttrString"
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character (len=*), parameter :: ATTR_I4 = "StepAttrInt32"
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character (len=*), parameter :: ATTR_I8 = "StepAttrInt64"
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character (len=*), parameter :: ATTR_R4 = "StepAttrFloat32"
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character (len=*), parameter :: ATTR_R8 = "StepAttrFloat64"
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! for formated output
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character (len=128) :: fmt
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! attribute values. Note: allocatable strings aren't supported in Fortran90
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character (len=256) :: string_value
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integer*4, allocatable :: i4_value (:)
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integer*8, allocatable :: i8_value (:)
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real*4, allocatable :: r4_value (:)
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real*8, allocatable :: r8_value (:)
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! H5hut file id
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integer*8 :: file_id
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! H5hut API status return
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integer*8 status
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! type of attribute
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integer*8 type
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! len of attribute
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integer*8 len
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! loop index
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integer*8 i
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#if defined(PARALLEL_IO)
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! used for mpi error return
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integer :: ierr
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call mpi_init (ierr)
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#endif
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! abort program on any H5hut error
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call h5_abort_on_error ()
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call h5_set_verbosity_level (verbosity_level)
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! MPI_COMM_WORLD is used, if file is opened with default properties
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file_id = h5_openfile (FNAME, H5_O_RDONLY, H5_PROP_DEFAULT)
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! open step 1
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status = h5_setstep (file_id, int8(1))
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! read and output string attribute
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status = h5_getstepattribinfo_by_name (file_id, ATTR_STRING, type, len)
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status = h5_readstepattrib_string (file_id, ATTR_STRING, string_value)
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write (fmt, "(a, i0, a)") '(a', len, ')'
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write (*, "(a, ' = ')", advance='no') ATTR_STRING
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write (*, fmt) string_value
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! read and output 32bit integer attribute
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status = h5_getstepattribinfo_by_name (file_id, ATTR_I4, type, len)
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allocate (i4_value(len))
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status = h5_readstepattrib_i4 (file_id, ATTR_I4, i4_value)
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write (fmt, "(a, i0, a)") '(', len, 'i4)'
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write (*, "(a, ' =')", advance='no') ATTR_I4
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write (*, fmt) (i4_value(i), i = 1, len)
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! read and output 64bit integer attribute
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status = h5_getstepattribinfo_by_name (file_id, ATTR_I8, type, len)
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allocate (i8_value(len))
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status = h5_readstepattrib_i8 (file_id, ATTR_I8, i8_value)
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write (fmt, "(a, i0, a)") '(', len, 'i4)'
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write (*, "(a, ' =')", advance='no') ATTR_I8
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write (*, fmt) (i8_value(i), i = 1, len)
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! read and output 32bit floating point attribute
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status = h5_getstepattribinfo_by_name (file_id, ATTR_R4, type, len)
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allocate (r4_value(len))
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status = h5_readstepattrib_r4 (file_id, ATTR_R4, r4_value)
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write (fmt, "(a, i0, a)") '(', len, 'f10.5)'
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write (*, "(a, ' =')", advance='no') ATTR_R4
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write (*, fmt) (r4_value(i), i = 1, len)
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! read and output 64bit floating point attribute
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status = h5_getstepattribinfo_by_name (file_id, ATTR_R8, type, len)
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allocate (r8_value(len))
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status = h5_readstepattrib_r8 (file_id, ATTR_R8, r8_value)
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write (fmt, "(a, i0, a)") '(', len, 'f10.5)'
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write (*, "(a, ' =')", advance='no') ATTR_R8
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write (*, fmt) (r8_value(i), i = 1, len)
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! cleanup
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status = h5_closefile (file_id)
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#if defined(PARALLEL_IO)
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call mpi_finalize(ierr)
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#endif
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end program read_step_attribs
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