FUNCTION dustem_read_calor_lv,file,silent=silent,help=help

;+
; NAME:
;   dustem_read_calor_lv
;
; PURPOSE:
;   reads .DAT files relating to grain heat capacities for the LV
;   fortran version
;
; CATEGORY:
;    DustEMWrap, Distributed, LowLevel, Initialization
;
; CALLING SEQUENCE:
;   dustem_read_calor_lv,dir,st
;
; INPUTS:
;    file  : input file to be read
;
; OPTIONAL INPUT PARAMETERS:
;    None
;
; OUTPUTS:
;    st   : dustem data structure
;
; OPTIONAL OUTPUT PARAMETERS:
;    None
;
; ACCEPTED KEY-WORDS:
;    help     : writes this help
;
; COMMON BLOCKS:
;    None
;
; SIDE EFFECTS:
;
; 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_read_calor_lv'
     full_st=0.
     goto,the_end
  ENDIF


  
st=''
Nmax=10000L
sts=strarr(Nmax)
openr,unit,file,/get_lun

;==read comments
str='' & first_char='#'
WHILE first_char EQ '#' DO BEGIN
  readf,unit,str
  first_char=strmid(str,0,1)
ENDWHILE

;read number of sizes
Nsizes=fix(str)

;Get sizes
readf,unit,st
sizes=float(str_sep(strcompress(strtrim(st,2)),' '))
Ncol=Nsizes

;==read comments
;str='' & first_char='#'
;WHILE first_char EQ '#' DO BEGIN
;  readf,unit,str
;  first_char=strmid(str,0,1)
;ENDWHILE
readf,unit,Nlines

;== read Calor
nlines=0L
first_char=' '
WHILE not eof(unit) and first_char NE '#' DO BEGIN
    readf,unit,st
    sts(nlines)=st
    nlines=nlines+1
    first_char=strmid(st,0,1)
ENDWHILE
close,unit
free_lun,unit

calor_str=sts(0:nlines-1)

Nlines=n_elements(calor_str)

calor_values=fltarr(Nlines,Ncol)
logT_values=fltarr(Nlines)
FOR i=0L,Nlines-1 DO BEGIN
  vs=str_sep(strcompress(strtrim(calor_str(i),2)),' ')
  logT_values(i)=vs(0)
  calor_values(i,*)=vs(1:*)
ENDFOR

;== Make output structure
cmd='one_st={'
FOR i=0L,Ncol-1 DO BEGIN
  cmd=cmd+'v'+strtrim(i+1,2)+':'+'0.'
  IF i NE Ncol-1 THEN BEGIN
    cmd=cmd+','
  ENDIF ELSE BEGIN
    cmd=cmd+'}'
  ENDELSE
ENDFOR
toto=execute(cmd)
calor_st=replicate(one_st,Nlines)

;=== fill in the qabs structure
FOR j=0L,Ncol-1 DO BEGIN
  calor_st.(j)=reform(calor_values(*,j))
ENDFOR

full_st={file:file,Nsizes:Nsizes,sizes:sizes,logT:logT_values,Calor:calor_st}

the_end:
return,full_st

END