mapping.sa
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-------------------------> GNU Sather - sourcefile <-------------------------
-- Copyright (C) 2000 by K Hopper, University of Waikato, New Zealand --
-- This file is part of the GNU Sather library. It is free software; you may --
-- redistribute and/or modify it under the terms of the GNU Library General --
-- Public License (LGPL) as published by the Free Software Foundation; --
-- either version 2 of the license, or (at your option) any later version. --
-- 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 Doc/LGPL for more details. --
-- The license text is also available from: Free Software Foundation, Inc., --
-- 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA --
--------------> Please email comments to <bug-sather@gnu.org> <--------------
abstract class $CODE_MAPPER < $BINARY
abstract class $CODE_MAPPER < $BINARY is
-- This abstract class models a code mapper which uses data obtained
-- from a file in order to carry out code conversions.
-- Version 1.1 Apr 2001. Copyright K Hopper, U of Waikato
-- Development History
-- -------------------
-- Date Who By Detail
-- ---- ------ ------
-- 30 Oct 98 kh Original after a Perl script
-- 26 Apr 01 kh Added kind reader for self-consistency.
kind : CODE_KINDS ;
create(
kind : CODE_KINDS
) : SAME ;
-- This routine returns an empty mapper object for the code kind
-- indicated - which may not be void.
create(
kind : CODE_KINDS,
path : FILE_PATH
) : SAME ;
-- This routine creates a new mapper from the contents of the indicated
-- file. Path may not be void.
from_unicode(
ch_code : CHAR_CODE
) : CHAR_CODE ;
-- This routine is designed to convert the single code given as a
-- unicode code into the encoding used in this mapping table if such a value
-- exists.
to_unicode(
ch_code : CHAR_CODE
) : CHAR_CODE ;
-- This routine is designed to convert the single code given into its
-- encoded value as a unicode.
end ; -- $CODE_MAPPER
abstract class $CODE_CONVERTER
abstract class $CODE_CONVERTER is
-- This abstract class models an abstraction which provides code
-- conversion services to and from any registered character encoding.
-- Version 1.1 Apr 99. Copyright K Hopper, U of Waikato
-- Development History
-- -------------------
-- Date Who By Detail
-- ---- ------ ------
-- 03 Nov 98 kh Original for new library
-- 7 Apr 99 kh Revision for V8 of text classes.
rune(
from : LIBCHARS,
val : CHAR
) : RUNE ;
-- This routine returns the rune encoding (Unicode) given the value
-- character in the indicated encoding.
runes(
val : STR
) : RUNES ;
-- This routine returns the rune (Unicode code value) string which
-- corresponds to val which is indicated to be of the given code kind.
char(
to : CODE_KINDS,
val : RUNE
) : CHAR ;
-- This routine returns the character encoding in the specified code
-- kind given the rune val. It is an error if the given rune contains
-- combining codes. If no such code exists then void is returned.
str(
to : LIBCHARS,
val : RUNES
) : STR ;
-- This routine returns the character string of the given code kind
-- which corresponds to the val argument. If one or more elements cannot
-- be mapped then void is returned.
code(
to : LIBCHARS,
val : RUNE
) : CHAR_CODE ;
-- This routine returns the character code string of the given code kind
-- which corresponds to the val argument. If one or more elements cannot
-- be mapped then void is returned.
codes(
to : LIBCHARS,
val : RUNES
) : CODE_STR ;
-- This routine returns the character code string of the given code kind
-- which corresponds to the val argument. If one or more elements cannot
-- be mapped then void is returned.
end ; -- $CODE_CONVERTER