source: trunk/WRF.COMMON/WRFV2/external/io_netcdf/ext_ncd_get_var_ti.code

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!*----------------------------------------------------------------------------
!*
!*  WRF NetCDF I/O
!   Author:  Jacques Middlecoff jacquesm@fsl.noaa.gov
!*  Date:    October 6, 2000
!*
!*----------------------------------------------------------------------------

  use wrf_data
  use ext_ncd_support_routines
  implicit none
  include 'wrf_status_codes.h'
  include 'netcdf.inc'
  integer               ,intent(in)     :: DataHandle
  character*(*)         ,intent(in)     :: Element
  character*(*)         ,intent(in)     :: Var
  TYPE_DATA
  TYPE_COUNT
  TYPE_OUTCOUNT
  integer               ,intent(out)    :: Status
  type(wrf_data_handle) ,pointer        :: DH
  integer                               :: XLen
  TYPE_BUFFER
  character (VarNameLen)                :: VarName
  integer                               :: stat
  integer                               :: NVar
  integer                               :: XType

  if(Count <= 0) then
    Status = WRF_WARN_ZERO_LENGTH_GET  
    write(msg,*) &
'Warning ZERO LENGTH GET in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__
    call wrf_debug ( WARN , msg)
    return
  endif
  VarName = Var
  call GetDH(DataHandle,DH,Status)
  if(Status /= WRF_NO_ERR) then
    write(msg,*) &
'Warning Status = ',Status,' in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__
    call wrf_debug ( WARN , msg)
    return
  endif
  if(DH%FileStatus == WRF_FILE_NOT_OPENED) then
    Status = WRF_WARN_FILE_NOT_OPENED  
    write(msg,*) &
'Warning FILE NOT OPENED in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__
    call wrf_debug ( WARN , msg)
  elseif(DH%FileStatus == WRF_FILE_OPENED_NOT_COMMITTED) then
    Status = WRF_WARN_DRYRUN_READ  
    write(msg,*) &
'Warning DRYRUN READ in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__
    call wrf_debug ( WARN , msg)
  elseif(DH%FileStatus == WRF_FILE_OPENED_FOR_WRITE) then
    Status = WRF_WARN_READ_WONLY_FILE 
    write(msg,*) &
'Warning READ WONLY FILE in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__
    call wrf_debug ( WARN , msg)
  elseif(DH%FileStatus == WRF_FILE_OPENED_FOR_READ) then
    do NVar=1,DH%NumVars
      if(DH%VarNames(NVar) == VarName) then
        exit
      elseif(NVar == DH%NumVars) then
        Status = WRF_WARN_VAR_NF  
        write(msg,*) &
'Warning VARIABLE NOT FOUND in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__ 
        call wrf_debug ( WARN , msg)
        return
      endif
    enddo
    stat = NF_INQ_ATT(DH%NCID,DH%VarIDs(NVar),trim(Element),XType,XLen)
    call netcdf_err(stat,Status)
    if(Status /= WRF_NO_ERR) then
      write(msg,*) &
'NetCDF error in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__,' Element ',Element
      call wrf_debug ( WARN , msg)
    endif
    if ( NF_TYPE == NF_DOUBLE .OR. NF_TYPE == NF_FLOAT ) then
      if( .NOT. ( XType==NF_FLOAT .OR. XType==NF_DOUBLE) ) then
        Status = WRF_WARN_TYPE_MISMATCH  
        write(msg,*) &
'Warning TYPE MISMATCH in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__
        call wrf_debug ( WARN , msg)
        return
      endif
    else
      if(XType /= NF_TYPE) then
        Status = WRF_WARN_TYPE_MISMATCH  
        write(msg,*) &
'Warning TYPE MISMATCH in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__
        call wrf_debug ( WARN , msg)
        return
      endif
    endif
#ifndef CHAR_TYPE
    allocate(Buffer(XLen), STAT=stat)
    if(stat/= 0) then
      Status = WRF_ERR_FATAL_ALLOCATION_ERROR 
      write(msg,*) &
'Fatal ALLOCATION ERROR in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__
      call wrf_debug ( FATAL , msg)
      return
    endif
    stat = NF_ROUTINE(DH%NCID,DH%VarIDs(NVar),trim(Element), Buffer )
#else
    if(XLen > len(Data)) then
      Status = WRF_WARN_CHARSTR_GT_LENDATA   
      write(msg,*) &
'Warning LEN CHAR STRING > LEN DATA in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__
      call wrf_debug ( WARN , msg)
      return
    endif
    stat = NF_ROUTINE(DH%NCID,DH%VarIDs(NVar),trim(Element), Data )
#endif
    call netcdf_err(stat,Status)
    if(Status /= WRF_NO_ERR) then
      write(msg,*) &
'NetCDF error in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__,' Element ',Element
      call wrf_debug ( WARN , msg)
    endif
    COPY
#ifndef CHAR_TYPE
    deallocate(Buffer, STAT=stat)
    if(stat/= 0) then
      Status = WRF_ERR_FATAL_DEALLOCATION_ERR  
      write(msg,*) &
'Fatal DEALLOCATION ERROR in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__
      call wrf_debug ( FATAL , msg)
      return
    endif
    if(XLen > Count) then
      OutCount = Count
      Status   = WRF_WARN_MORE_DATA_IN_FILE  
    else
      OutCount = XLen
      Status   = WRF_NO_ERR
    endif
#endif
  else
    Status = WRF_ERR_FATAL_BAD_FILE_STATUS  
    write(msg,*) &
'Fatal error BAD FILE STATUS in ',__FILE__,' ',ROUTINE_TYPE,', line', __LINE__ 
    call wrf_debug ( FATAL , msg)
    return
  endif
  return