/usr/lib/ocaml/extlib/extString.mli is in libextlib-ocaml-dev 1.5.4-2.
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* ExtString - Additional functions for string manipulations.
* Copyright (C) 2003 Nicolas Cannasse
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version,
* with the special exception on linking described in file LICENSE.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
(** Additional functions for string manipulations. *)
exception Invalid_string
module String :
sig
(** {6 New Functions} *)
val init : int -> (int -> char) -> string
(** [init l f] returns the string of length [l] with the chars
f 0 , f 1 , f 2 ... f (l-1). *)
val find : string -> string -> int
(** [find s x] returns the starting index of the string [x]
within the string [s] or raises [Invalid_string] if [x]
is not a substring of [s]. *)
val split : string -> string -> string * string
(** [split s sep] splits the string [s] between the first
occurrence of [sep].
raises [Invalid_string] if the separator is not found. *)
val nsplit : string -> string -> string list
(** [nsplit s sep] splits the string [s] into a list of strings
which are separated by [sep].
[nsplit "" _] returns the empty list.
@raise Invalid_string if [sep] is empty string. *)
val join : string -> string list -> string
(** Same as [concat] *)
val slice : ?first:int -> ?last:int -> string -> string
(** [slice ?first ?last s] returns a "slice" of the string
which corresponds to the characters [s.[first]],
[s.[first+1]], ..., [s[last-1]]. Note that the character at
index [last] is {b not} included! If [first] is omitted it
defaults to the start of the string, i.e. index 0, and if
[last] is omitted is defaults to point just past the end of
[s], i.e. [length s]. Thus, [slice s] is equivalent to
[copy s].
Negative indexes are interpreted as counting from the end of
the string. For example, [slice ~last:-2 s] will return the
string [s], but without the last two characters.
This function {b never} raises any exceptions. If the
indexes are out of bounds they are automatically clipped.
*)
val lchop : string -> string
(** Returns the same string but without the first character.
does nothing if the string is empty. *)
val rchop : string -> string
(** Returns the same string but without the last character.
does nothing if the string is empty. *)
val of_int : int -> string
(** Returns the string representation of an int. *)
val of_float : float -> string
(** Returns the string representation of an float. *)
val of_char : char -> string
(** Returns a string containing one given character. *)
val to_int : string -> int
(** Returns the integer represented by the given string or
raises [Invalid_string] if the string does not represent an integer.*)
val to_float : string -> float
(** Returns the float represented by the given string or
raises Invalid_string if the string does not represent a float. *)
val ends_with : string -> string -> bool
(** [ends_with s x] returns true if the string [s] is ending with [x]. *)
val starts_with : string -> string -> bool
(** [starts_with s x] return true if [s] is starting with [x]. *)
val enum : string -> char Enum.t
(** Returns an enumeration of the characters of a string.*)
val of_enum : char Enum.t -> string
(** Creates a string from a character enumeration. *)
val map : (char -> char) -> string -> string
(** [map f s] returns a string where all characters [c] in [s] have been
replaced by [f c]. **)
val fold_left : ('a -> char -> 'a) -> 'a -> string -> 'a
(** [fold_left f a s] is
[f (... (f (f a s.[0]) s.[1]) ...) s.[n-1]] *)
val fold_right : (char -> 'a -> 'a) -> string -> 'a -> 'a
(** [fold_right f s b] is
[f s.[0] (f s.[1] (... (f s.[n-1] b) ...))] *)
val explode : string -> char list
(** [explode s] returns the list of characters in the string [s]. *)
val implode : char list -> string
(** [implode cs] returns a string resulting from concatenating
the characters in the list [cs]. *)
val strip : ?chars:string -> string -> string
(** Returns the string without the chars if they are at the beginning or
at the end of the string. By default chars are " \t\r\n". *)
val exists : string -> string -> bool
(** [exists str sub] returns true if [sub] is a substring of [str] or
false otherwise. *)
val replace_chars : (char -> string) -> string -> string
(** [replace_chars f s] returns a string where all chars [c] of [s] have been
replaced by the string returned by [f c]. *)
val replace : str:string -> sub:string -> by:string -> bool * string
(** [replace ~str ~sub ~by] returns a tuple constisting of a boolean
and a string where the first occurrence of the string [sub]
within [str] has been replaced by the string [by]. The boolean
is true if a subtitution has taken place. *)
(** {6 Older Functions} *)
(** Please refer to the Ocaml Manual for documentation of these
functions. *)
val length : string -> int
val get : string -> int -> char
val set : string -> int -> char -> unit
val create : int -> string
val make : int -> char -> string
val copy : string -> string
val sub : string -> int -> int -> string
val fill : string -> int -> int -> char -> unit
val blit : string -> int -> string -> int -> int -> unit
val concat : string -> string list -> string
val iter : (char -> unit) -> string -> unit
val escaped : string -> string
val index : string -> char -> int
val rindex : string -> char -> int
val index_from : string -> int -> char -> int
val rindex_from : string -> int -> char -> int
val contains : string -> char -> bool
val contains_from : string -> int -> char -> bool
val rcontains_from : string -> int -> char -> bool
val uppercase : string -> string
val lowercase : string -> string
val capitalize : string -> string
val uncapitalize : string -> string
type t = string
val compare : t -> t -> int
(**/**)
external unsafe_get : string -> int -> char = "%string_unsafe_get"
external unsafe_set : string -> int -> char -> unit = "%string_unsafe_set"
external unsafe_blit : string -> int -> string -> int -> int -> unit = "caml_blit_string" "noalloc"
external unsafe_fill : string -> int -> int -> char -> unit = "caml_fill_string" "noalloc"
end
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