io_buff.F90

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!SFX_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
!SFX_LIC This is part of the SURFEX software governed by the CeCILL-C licence
!SFX_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt  
!SFX_LIC for details. version 1.
!     #######################################################
      SUBROUTINE io_buff (&
                            HREC,HACTION,OKNOWN)
!     #######################################################
!
!!****  *IO_BUFF - function to check if the field has already been read/written
!!
!!    PURPOSE
!!    -------
!!
!!**  METHOD
!!    ------
!!
!!    EXTERNAL
!!    --------
!!
!!
!!    IMPLICIT ARGUMENTS
!!    ------------------
!!
!!    REFERENCE
!!    ---------
!!
!!
!!    AUTHOR
!!    ------
!!      V. Masson   *Meteo France*
!!
!!    MODIFICATIONS
!!    -------------
!!      Original    08/2007 
!-------------------------------------------------------------------------------
!
!*       0.    DECLARATIONS
!              ------------
!
!
USE modd_io_buff
!
!
USE yomhook   ,ONLY : lhook,   dr_hook
USE parkind1  ,ONLY : jprb
!
IMPLICIT NONE
!
!*       0.1   Declarations of arguments
!              -------------------------
!
!
!
 CHARACTER(LEN=12),  INTENT(IN) :: HREC     ! field to read or write
 CHARACTER(LEN=1),   INTENT(IN) :: HACTION  ! 'R' : file being read
                                           ! 'W' : file being written
!
LOGICAL,            INTENT(OUT):: OKNOWN   ! T : field has already been read/written
!
!*       0.2   Declarations of local variables
!              -------------------------------
!
INTEGER :: JLOOP
REAL(KIND=JPRB) :: ZHOOK_HANDLE
!-------------------------------------------------------------------------------
!
IF (lhook) CALL dr_hook('IO_BUFF',0,zhook_handle)
IF (haction=='R' .OR. haction=='W') THEN
  oknown=.false.
  DO jloop=1,nrec
    oknown=(hrec==crec(jloop))
    IF (oknown .AND. lhook) CALL dr_hook('IO_BUFF',1,zhook_handle)
    IF (oknown) RETURN
  END DO
  nrec=nrec+1
  crec(nrec)=hrec
END IF
IF (lhook) CALL dr_hook('IO_BUFF',1,zhook_handle)
!
!-------------------------------------------------------------------------------
!
END SUBROUTINE io_buff