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+(* febootstrap 3
+ * Copyright (C) 2009-2010 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *)
+
+(** Utilities. *)
+
+val file_exists : string -> bool
+  (** Return [true] iff file exists. *)
+
+val dir_exists : string -> bool
+  (** Return [true] iff dir exists. *)
+
+val uniq : ?cmp:('a -> 'a -> int) -> 'a list -> 'a list
+  (** Uniquify a list (the list must be sorted first). *)
+
+val sort_uniq : ?cmp:('a -> 'a -> int) -> 'a list -> 'a list
+  (** Sort and uniquify a list. *)
+
+val input_all_lines : in_channel -> string list
+  (** Input all lines from a channel, returning a list of lines. *)
+
+val run_command_get_lines : string -> string list
+  (** Run the command and read the list of lines that it prints to stdout. *)
+
+val run_command : string -> unit
+  (** Run a command using {!Sys.command} and exit if it fails.  Be careful
+      when constructing the command to properly quote any arguments
+      (using {!Filename.quote}). *)
+
+val run_python : string -> string list -> unit
+  (** [run_python code args] runs Python [code] with arguments [args].
+      This does not return anything, but exits with an error message
+      if the Python code returns an error. *)
+
+val tmpdir : unit -> string
+  (** [tmpdir ()] returns a newly created temporary directory.  The
+      tmp directory is automatically removed when the program exits.
+      Note that a fresh temporary directory is returned each time you
+      call this function. *)
+
+val (//) : string -> string -> string
+  (** [x // y] concatenates file paths [x] and [y] into a single path. *)
+
+val find : string -> string -> int
+(** [find str sub] searches for [sub] in [str], returning the index
+    or -1 if not found. *)
+
+val string_split : string -> string -> string list
+  (** [string_split sep str] splits [str] at [sep]. *)
+
+val string_prefix : string -> string -> bool
+  (** [string_prefix prefix str] returns true iff [str] starts with [prefix]. *)
+
+val path_prefix : string -> string -> bool
+  (** [path_prefix prefix path] returns true iff [path] is [prefix] or
+      [path] starts with [prefix/]. *)
+
+val filter_map : ('a -> 'b option) -> 'a list -> 'b list
+  (** map + filter *)