PRO dustem_write_calor_lv,dir,st,help=help

;+
; NAME:
;   dustem_write_calor_lv
;
; PURPOSE:
;   copies .DAT files relating to grain heat capacities into the
;   runtime directory
;
; CATEGORY:
;    DustEMWrap, Distributed, LowLevel, Initialization
;
; CALLING SEQUENCE:
;   dustem_write_calor_lv,dir,st
;
; INPUTS:
;    st   : dustem data structure
;    dir  : output directory for files 
;
; OPTIONAL INPUT PARAMETERS:
;    None
;
; OUTPUTS:
;    None
;
; OPTIONAL OUTPUT PARAMETERS:
;    None
;
; ACCEPTED KEY-WORDS:
;    help     : writes this help
;
; COMMON BLOCKS:
;    None
;
; SIDE EFFECTS:
;    Files are written
;
; RESTRICTIONS:
;    The DustEM fortran code must be installed
;    The DustEMWrap IDL code must be installed
;
; PROCEDURES AND SUBROUTINES USED:  
;
; EXAMPLES:
;
; MODIFICATION HISTORY:
;    Evolution details on the DustEMWrap gitlab.
;    See http://dustemwrap.irap.omp.eu/ for FAQ and help.  
;-
  
  IF keyword_set(help) THEN BEGIN
     doc_library,'dustem_write_calor_lv'
     goto,the_end
  ENDIF

;== This a bypass. Just copies the file
Nel=n_elements(st)

FOR i=0,Nel-1 Do BEGIN
  file=(*st(i)).file
  fv=str_sep(file,'/')
  ffile=fv(n_elements(fv)-1)
  spawn_str='cp '+(*st(i)).file+' '+dir+ffile
  spawn,spawn_str
  ;message,'Copied :'+spawn_str,/info
ENDFOR

the_end:
END