(** csv.mli - comma separated values parser
  *
  * $Id: csv.mli,v 1.1 2003-12-17 16:05:08 rich Exp $
  *)

type t = string list list
(** Representation of CSV files. *)

exception Bad_CSV_file of string
(** Badly formed CSV files throw this exception: *)

val lines : t -> int
(** Work out the number of lines in a CSV file. *)

val columns : t -> int
(** Work out the (maximum) number of columns in a CSV file. Note that each
   line may be a different length, so this finds the one with the most
   columns. *)

val load_in : in_channel -> t
(** Load a CSV file.
  * @param chan Input file stream
  *)

val load : string -> t
(** Load a CSV file.
  * @param filename CSV filename.
  *)

val load_rows : (string list -> unit) -> in_channel -> unit
(** For very large CSV files which cannot be processed in memory at once,
  * this function is appropriate. It parses the input one row at a time and
  * calls your function once for each row.
  *
  * @param f Callout function.
  * @param chan Input file stream.
  *)

val print : t -> unit
(** Print string list list - same as [save_out stdout] *)

val save_out : out_channel -> t -> unit
(** Save string list list to a channel. *)

val save : string -> t -> unit
(** Save string list list to a file. *)