program main

!*****************************************************************************80
!
!! freefem_mesh_io_test() tests freefem_mesh_io().
!
!  Licensing:
!
!    This code is distributed under the MIT license. 
!
!  Modified:
!
!    18 December 2014
!
!  Author:
!
!    John Burkardt
!
  implicit none

  integer, parameter :: rk = kind ( 1.0D+00 )

  call timestamp ( )
  write ( *, '(a)' ) ''
  write ( *, '(a)' ) 'freefem_mesh_io_test():'
  write ( *, '(a)' ) '  FORTRAN90 version'
  write ( *, '(a)' ) '  Test freefem_mesh_io().'

  call test01 ( )
  call test02 ( )
  call test03 ( )
!
!  Terminate.
!
  write ( *, '(a)' ) ''
  write ( *, '(a)' ) 'freefem_mesh_io_test():'
  write ( *, '(a)' ) '  Normal end of execution.'
  write ( *, '(a)' ) ''
  call timestamp ( )

  stop 0
end
subroutine test01 ( )

!*****************************************************************************80
!
!! TEST01 gets the example data and prints it.
!
!  Licensing:
!
!    This code is distributed under the MIT license. 
!
!  Modified:
!
!    18 December 2014
!
!  Author:
!
!    John Burkardt
!
  implicit none

  integer, parameter :: rk = kind ( 1.0D+00 )

  integer, allocatable :: e_l(:)
  integer e_num
  integer, allocatable :: e_v(:,:)
  integer, allocatable :: t_l(:)
  integer t_num
  integer, allocatable :: t_v(:,:)
  integer, allocatable :: v_l(:)
  integer v_num
  real ( kind = rk ), allocatable :: v_xy(:,:)

  write ( *, '(a)' ) ''
  write ( *, '(a)' ) 'TEST01:'
  write ( *, '(a)' ) '  Get the example 2D data and print it.'
!
!  Get the sizes.
!
  call ffmsh_2d_size_example ( v_num, e_num, t_num )
!
!  Print the sizes.
!
  call ffmsh_2d_size_print ( '  Example Sizes:', v_num, e_num, t_num ) 
!
!  Allocate memory.
!
  allocate ( v_xy(2,v_num) )
  allocate ( v_l(v_num) )
  allocate ( e_v(2,e_num) )
  allocate ( e_l(e_num) )
  allocate ( t_v(3,t_num) )
  allocate ( t_l(t_num) )
!
!  Get the data.
!
  call ffmsh_2d_data_example ( v_num, e_num, t_num, v_xy, v_l, e_v, e_l, &
    t_v, t_l )
!
!  Print the data.
!
  call ffmsh_2d_data_print ( '  Example data:', v_num, e_num, t_num, v_xy, &
    v_l, e_v, e_l, t_v, t_l )
!
!  Free memory.
!
  deallocate ( e_l )
  deallocate ( e_v )
  deallocate ( t_l )
  deallocate ( t_v )
  deallocate ( v_l )
  deallocate ( v_xy )

  return
end
subroutine test02 ( )

!*****************************************************************************80
!
!! TEST02 writes the example data to a file.
!
!  Licensing:
!
!    This code is distributed under the MIT license. 
!
!  Modified:
!
!    18 December 2014
!
!  Author:
!
!    John Burkardt
!
  implicit none

  integer, parameter :: rk = kind ( 1.0D+00 )

  integer, allocatable :: e_l(:)
  integer e_num
  integer, allocatable :: e_v(:,:)
  character ( len = 255 ) filename
  integer, allocatable :: t_l(:)
  integer t_num
  integer, allocatable :: t_v(:,:)
  integer, allocatable :: v_l(:)
  integer v_num
  real ( kind = rk ), allocatable :: v_xy(:,:)

  write ( *, '(a)' ) ''
  write ( *, '(a)' ) 'TEST02:'
  write ( *, '(a)' ) '  Write the example 2D data to a file.'
!
!  Get example sizes.
!
  call ffmsh_2d_size_example ( v_num, e_num, t_num )
!
!  Allocate memory.
!
  allocate ( v_xy(2,v_num) )
  allocate ( v_l(v_num) )
  allocate ( e_v(2,e_num) )
  allocate ( e_l(e_num) )
  allocate ( t_v(3,t_num) )
  allocate ( t_l(t_num) )
!
!  Get example data.
!
  call ffmsh_2d_data_example ( v_num, e_num, t_num, v_xy, v_l, e_v, e_l, &
    t_v, t_l )
!
!  Write the data to a file.
!
  filename = 'output.msh'

  call ffmsh_2d_write ( filename, v_num, e_num, t_num, v_xy, &
    v_l, e_v, e_l, t_v, t_l )

  write ( *, '(a)' ) ''
  write ( *, '(a)' ) '  The data was written to "' // trim ( filename ) // '"'
!
!  Free memory.
!
  deallocate ( e_l )
  deallocate ( e_v )
  deallocate ( t_l )
  deallocate ( t_v )
  deallocate ( v_l )
  deallocate ( v_xy )

  return
end
subroutine test03 ( )

!*****************************************************************************80
!
!! TEST03 gets the example data from a file.
!
!  Licensing:
!
!    This code is distributed under the MIT license. 
!
!  Modified:
!
!    20 December 2014
!
!  Author:
!
!    John Burkardt
!
  implicit none

  integer, parameter :: rk = kind ( 1.0D+00 )

  integer, allocatable :: e_l(:)
  integer e_num
  integer, allocatable :: e_v(:,:)
  character ( len = 255 ) ffmsh_filename
  integer, allocatable :: t_l(:)
  integer t_num
  integer, allocatable :: t_v(:,:)
  integer, allocatable :: v_l(:)
  integer v_num
  real ( kind = rk ), allocatable :: v_xy(:,:)

  ffmsh_filename = 'input.msh'

  write ( *, '(a)' ) ''
  write ( *, '(a)' ) 'TEST03:'
  write ( *, '(a)' ) '  Read the example 2D data from a file.'
!
!  Read sizes.
!
  call ffmsh_2d_size_read ( ffmsh_filename, v_num, e_num, t_num )
!
!  Print sizes.
!
  call ffmsh_2d_size_print ( ffmsh_filename, v_num, e_num, t_num ) 
!
!  Allocate memory.
!
  allocate ( v_xy(2,v_num) )
  allocate ( v_l(v_num) )
  allocate ( e_v(2,e_num) )
  allocate ( e_l(e_num) )
  allocate ( t_v(3,t_num) )
  allocate ( t_l(t_num) )
!
!  Read data.
!
  call ffmsh_2d_data_read ( ffmsh_filename, v_num, e_num, t_num, v_xy, &
    v_l, e_v, e_l, t_v, t_l )
!
!  Print data.
!
  call ffmsh_2d_data_print ( ffmsh_filename, v_num, e_num, t_num, v_xy, &
    v_l, e_v, e_l, t_v, t_l )
!
!  Free memory.
!
  deallocate ( e_l )
  deallocate ( e_v )
  deallocate ( t_l )
  deallocate ( t_v )
  deallocate ( v_l )
  deallocate ( v_xy )

  return
end
subroutine timestamp ( )

!*****************************************************************************80
!
!! timestamp() prints the current YMDHMS date as a time stamp.
!
!  Example:
!
!    31 May 2001   9:45:54.872 AM
!
!  Licensing:
!
!    This code is distributed under the MIT license.
!
!  Modified:
!
!    18 May 2013
!
!  Author:
!
!    John Burkardt
!
!  Parameters:
!
!    None
!
  implicit none

  integer, parameter :: rk = kind ( 1.0D+00 )

  character ( len = 8 ) ampm
  integer d
  integer h
  integer m
  integer mm
  character ( len = 9 ), parameter, dimension(12) :: month = (/ &
    'January  ', 'February ', 'March    ', 'April    ', &
    'May      ', 'June     ', 'July     ', 'August   ', &
    'September', 'October  ', 'November ', 'December ' /)
  integer n
  integer s
  integer values(8)
  integer y

  call date_and_time ( values = values )

  y = values(1)
  m = values(2)
  d = values(3)
  h = values(5)
  n = values(6)
  s = values(7)
  mm = values(8)

  if ( h < 12 ) then
    ampm = 'AM'
  else if ( h == 12 ) then
    if ( n == 0 .and. s == 0 ) then
      ampm = 'Noon'
    else
      ampm = 'PM'
    end if
  else
    h = h - 12
    if ( h < 12 ) then
      ampm = 'PM'
    else if ( h == 12 ) then
      if ( n == 0 .and. s == 0 ) then
        ampm = 'Midnight'
      else
        ampm = 'AM'
      end if
    end if
  end if

  write ( *, '(i2.2,1x,a,1x,i4,2x,i2,a1,i2.2,a1,i2.2,a1,i3.3,1x,a)' ) &
    d, trim ( month(m) ), y, h, ':', n, ':', s, '.', mm, trim ( ampm )

  return
end