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1 706 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT RUN-TIME COMPONENTS                         --
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--                                                                          --
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--                     ADA.STRINGS.UTF_ENCODING.STRINGS                 --
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--                                                                          --
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--                                 S p e c                                  --
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--                                                                          --
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-- This specification is derived from the Ada Reference Manual for use with --
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-- GNAT.  In accordance with the copyright of that document, you can freely --
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-- copy and modify this specification,  provided that if you redistribute a --
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-- modified version,  any changes that you have made are clearly indicated. --
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--                                                                          --
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------------------------------------------------------------------------------
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--  This is an Ada 2012 package defined in AI05-0137-1. It is used for encoding
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--  and decoding String values using UTF encodings. Note: this package is
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--  consistent with Ada 95, and may be included in Ada 95 implementations.
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package Ada.Strings.UTF_Encoding.Strings is
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   pragma Pure (Strings);
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   --  The encoding routines take a String as input and encode the result
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   --  using the specified UTF encoding method. The result includes a BOM if
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   --  the Output_BOM argument is set to True. All 256 values of type Character
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   --  are valid, so Encoding_Error cannot be raised for string input data.
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   function Encode
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     (Item          : String;
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      Output_Scheme : Encoding_Scheme;
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      Output_BOM    : Boolean  := False) return UTF_String;
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   --  Encode String using UTF-8, UTF-16LE or UTF-16BE encoding as specified by
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   --  the Output_Scheme parameter.
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   function Encode
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     (Item       : String;
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      Output_BOM : Boolean  := False) return UTF_8_String;
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   --  Encode String using UTF-8 encoding
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   function Encode
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     (Item       : String;
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      Output_BOM : Boolean  := False) return UTF_16_Wide_String;
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   --  Encode String using UTF_16 encoding
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   --  The decoding routines take a UTF String as input, and return a decoded
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   --  Wide_String. If the UTF String starts with a BOM that matches the
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   --  encoding method, it is ignored. An incorrect BOM raises Encoding_Error,
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   --  as does a code out of range of type Character.
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   function Decode
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     (Item         : UTF_String;
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      Input_Scheme : Encoding_Scheme) return String;
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   --  The input is encoded in UTF_8, UTF_16LE or UTF_16BE as specified by the
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   --  Input_Scheme parameter. It is decoded and returned as a String value.
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   --  Note: a convenient form for scheme may be Encoding (UTF_String).
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   function Decode
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     (Item : UTF_8_String) return String;
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   --  The input is encoded in UTF-8 and returned as a String value
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   function Decode
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     (Item : UTF_16_Wide_String) return String;
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   --  The input is encoded in UTF-16 and returned as a String value
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end Ada.Strings.UTF_Encoding.Strings;

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