source: trunk/ToBeReviewed/WIDGET/AUTOUR_de_XXX/cutcmd.pro @ 69

PRO cutcmd, widcmd, toread, numberofread, prefix, nameexp, ending
;
  dummy = where(byte(widcmd) EQ (byte('"'))[0], nbdblquote) 
  CASE 1 OF
    nbdblquote MOD 2: stop ; odd numbers are impossibles...
    nbdblquote GT 0:
    nbdblquote EQ 0:BEGIN
; widcmd is an expression of type:
; numb1*a + numb2*b ... + numb
; we will change into the form
; numb1*"a" + numb2*"b" ... + numb
; in order to suits the new method of cutcmd
      widcmd = strtrim(widcmd, 2)
; we force to start with a + or -
      case 1 of
        strpos(widcmd, '+') EQ 0:
        strpos(widcmd, '-') EQ 0:
        ELSE:widcmd = '+' + widcmd
      ENDCASE
      separator = strsplit(widcmd, '[^-/*+]', /extract, /regex)
      other = strsplit(widcmd, '+-*/', /extract)
      IF n_elements(separator) NE n_elements(other) THEN stop
      widcmd = ''
      FOR i = 0, n_elements(other)-1 DO BEGIN 
        IF isnumber(other[i]) LT 1 THEN other[i] = '"' + other[i] + '"'
        widcmd = widcmd + separator[i] + other[i]
      ENDFOR
;      print, widcmd
    END 
  ENDCASE

  cutted = strsplit(widcmd, '"', /extract)
  IF strpos(widcmd, '"') EQ 0 THEN start = 0 ELSE start = 1
  nameexp = cutted[start:*:2]
  numberofread = n_elements(nameexp) 
  IF toread GE numberofread then begin
    dummy = report('toread cannot be larger than numberofread')
    stop
  ENDIF
  other = cutted[1-start:*:2]
; make sure that we have a prefix for each nameexp
  IF start EQ 0 THEN other = ['', other]
;
  nameexp = nameexp[toread]
  prefix = other[toread]
  IF n_elements(other) EQ numberofread + 1 THEN ending = other[numberofread] ELSE ending = ''
;
;help, prefix, nameexp, ending
;
  return
end