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[Libguestfs] [PATCH 2/5] mllib: Override Char and String modules from stdlib.



In Common_utils, override the Char and String modules from stdlib.
This hides the original (stdlib) modules, and means that whenever you
use Char.foo or String.foo you are in fact calling the
Common_utils.Char.foo or Common_utils.String.foo function.

As it stands, this change does nothing, but it will allow us to drop
unsafe functions (like String.lowercase) and add extra functions.
---
 mllib/common_utils.ml  |  8 ++++++++
 mllib/common_utils.mli | 45 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+)

diff --git a/mllib/common_utils.ml b/mllib/common_utils.ml
index f9c45cc..f375317 100644
--- a/mllib/common_utils.ml
+++ b/mllib/common_utils.ml
@@ -20,6 +20,14 @@ open Printf
 
 open Common_gettext.Gettext
 
+module Char = struct
+    include Char
+end
+
+module String = struct
+    include String
+end
+
 let (//) = Filename.concat
 
 let ( +^ ) = Int64.add
diff --git a/mllib/common_utils.mli b/mllib/common_utils.mli
index 7d886cf..f42ae64 100644
--- a/mllib/common_utils.mli
+++ b/mllib/common_utils.mli
@@ -16,6 +16,51 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *)
 
+module Char : sig
+    type t = char
+    val chr : int -> char
+    val code : char -> int
+    val compare: t -> t -> int
+    val escaped : char -> string
+    val lowercase : char -> char
+    val unsafe_chr : int -> char
+    val uppercase : char -> char
+end
+(** Override the Char module from stdlib. *)
+
+module String : sig
+    type t = string
+    val blit : string -> int -> string -> int -> int -> unit
+    val capitalize : string -> string
+    val compare: t -> t -> int
+    val concat : string -> string list -> string
+    val contains : string -> char -> bool
+    val contains_from : string -> int -> char -> bool
+    val copy : string -> string
+    val create : int -> string
+    val escaped : string -> string
+    val fill : string -> int -> int -> char -> unit
+    val get : string -> int -> char
+    val index : string -> char -> int
+    val index_from : string -> int -> char -> int
+    val iter : (char -> unit) -> string -> unit
+    val length : string -> int
+    val lowercase : string -> string
+    val make : int -> char -> string
+    val rcontains_from : string -> int -> char -> bool
+    val rindex : string -> char -> int
+    val rindex_from : string -> int -> char -> int
+    val set : string -> int -> char -> unit
+    val sub : string -> int -> int -> string
+    val uncapitalize : string -> string
+    val unsafe_blit : string -> int -> string -> int -> int -> unit
+    val unsafe_fill : string -> int -> int -> char -> unit
+    val unsafe_get : string -> int -> char
+    val unsafe_set : string -> int -> char -> unit
+    val uppercase : string -> string
+end
+(** Override the String module from stdlib. *)
+
 val ( // ) : string -> string -> string
 (** Concatenate directory and filename. *)
 
-- 
2.5.0


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