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71 lines
3.2 KiB
Ada
71 lines
3.2 KiB
Ada
------------------------------------------------------------------------------
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-- XML/Ada - An XML suite for Ada95 --
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-- --
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-- Copyright (C) 2001-2017, AdaCore --
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-- --
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-- This library is free software; you can redistribute it and/or modify it --
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-- under terms of the GNU General Public License as published by the Free --
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-- Software Foundation; either version 3, or (at your option) any later --
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-- version. This library is distributed in the hope that it will be useful, --
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
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-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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------------------------------------------------------------------------------
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with Unicode;
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with Unicode.CES;
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package Input_Sources.Strings is
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type String_Input is new Input_Source with private;
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type String_Input_Access is access all String_Input'Class;
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-- A special implementation of a reader, that reads from a unicode
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-- byte sequence.
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procedure Open
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(Str : Unicode.CES.Cst_Byte_Sequence_Access;
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Encoding : Unicode.CES.Encoding_Scheme;
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Input : out String_Input);
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-- Creates a new reader that reads from a byte-sequence, encoded with a
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-- specific encoding.
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-- No copy of Str is kept, we simply keep the pointer.
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procedure Open
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(Str : Unicode.CES.Byte_Sequence;
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Encoding : Unicode.CES.Encoding_Scheme;
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Input : out String_Input);
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-- Same as above, but a copy of the byte sequence is kept internally
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procedure Close (Input : in out String_Input);
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-- Free the memory occupied by Input
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procedure Next_Char
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(From : in out String_Input;
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C : out Unicode.Unicode_Char);
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-- Return the next character in the string.
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function Eof (From : String_Input) return Boolean;
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-- True if From is past the last character in the string.
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private
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type String_Input is new Input_Source with
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record
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Index : Natural;
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Buffer : Unicode.CES.Cst_Byte_Sequence_Access;
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Buffer2 : Unicode.CES.Byte_Sequence_Access;
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-- Only set if allocated in this package (second form of [Open])
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Encoding : Unicode.CES.Encoding_Scheme;
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end record;
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end Input_Sources.Strings;
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