128 lines
4.2 KiB
Fortran
128 lines
4.2 KiB
Fortran
!--------------------------------------------------------------------------------------------------
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!> @author Martin Diehl, Max-Planck-Institut für Eisenforschung GmbH
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!> @brief provides wrappers to C routines
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!--------------------------------------------------------------------------------------------------
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module system_routines
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implicit none
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private
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public :: &
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isDirectory, &
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getCWD, &
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getHostName
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interface
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function isDirectory_C(path) BIND(C)
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use, intrinsic :: ISO_C_Binding, only: &
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C_INT, &
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C_CHAR
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integer(C_INT) :: isDirectory_C
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character(kind=C_CHAR), dimension(1024), intent(in) :: path ! C string is an array
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end function isDirectory_C
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subroutine getCurrentWorkDir_C(str, stat) bind(C)
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use, intrinsic :: ISO_C_Binding, only: &
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C_INT, &
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C_CHAR
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character(kind=C_CHAR), dimension(1024), intent(out) :: str ! C string is an array
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integer(C_INT),intent(out) :: stat
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end subroutine getCurrentWorkDir_C
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subroutine getHostName_C(str, stat) bind(C)
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use, intrinsic :: ISO_C_Binding, only: &
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C_INT, &
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C_CHAR
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character(kind=C_CHAR), dimension(1024), intent(out) :: str ! C string is an array
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integer(C_INT),intent(out) :: stat
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end subroutine getHostName_C
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end interface
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contains
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!--------------------------------------------------------------------------------------------------
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!> @brief figures out if a given path is a directory (and not an ordinary file)
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!--------------------------------------------------------------------------------------------------
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logical function isDirectory(path)
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use, intrinsic :: ISO_C_Binding, only: &
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C_INT, &
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C_CHAR, &
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C_NULL_CHAR
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implicit none
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character(len=*), intent(in) :: path
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character(kind=C_CHAR), dimension(1024) :: strFixedLength
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integer :: i
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strFixedLength = repeat(C_NULL_CHAR,len(strFixedLength))
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do i=1,len(path) ! copy array components
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strFixedLength(i)=path(i:i)
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enddo
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isDirectory=merge(.True.,.False.,isDirectory_C(strFixedLength) /= 0_C_INT)
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end function isDirectory
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!--------------------------------------------------------------------------------------------------
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!> @brief gets the current working directory
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!--------------------------------------------------------------------------------------------------
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logical function getCWD(str)
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use, intrinsic :: ISO_C_Binding, only: &
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C_INT, &
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C_CHAR, &
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C_NULL_CHAR
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implicit none
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character(len=*), intent(out) :: str
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character(kind=C_CHAR), dimension(1024) :: strFixedLength ! C string is an array
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integer(C_INT) :: stat
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integer :: i
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str = repeat('',len(str))
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call getCurrentWorkDir_C(strFixedLength,stat)
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do i=1,1024 ! copy array components until Null string is found
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if (strFixedLength(i) /= C_NULL_CHAR) then
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str(i:i)=strFixedLength(i)
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else
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exit
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endif
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enddo
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getCWD=merge(.True.,.False.,stat /= 0_C_INT)
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end function getCWD
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!--------------------------------------------------------------------------------------------------
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!> @brief gets the current host name
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!--------------------------------------------------------------------------------------------------
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logical function getHostName(str)
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use, intrinsic :: ISO_C_Binding, only: &
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C_INT, &
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C_CHAR, &
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C_NULL_CHAR
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implicit none
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character(len=*), intent(out) :: str
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character(kind=C_CHAR), dimension(1024) :: strFixedLength ! C string is an array
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integer(C_INT) :: stat
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integer :: i
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str = repeat('',len(str))
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call getHostName_C(strFixedLength,stat)
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do i=1,1024 ! copy array components until Null string is found
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if (strFixedLength(i) /= C_NULL_CHAR) then
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str(i:i)=strFixedLength(i)
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else
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exit
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endif
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enddo
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getHostName=merge(.True.,.False.,stat /= 0_C_INT)
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end function getHostName
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end module system_routines
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