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/*
* Copyright (c) 2002-2006 The TenDRA Project <http://www.tendra.org/>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of The TenDRA Project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific, prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
* IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
*/
/*
Crown Copyright (c) 1997
This TenDRA(r) Computer Program is subject to Copyright
owned by the United Kingdom Secretary of State for Defence
acting through the Defence Evaluation and Research Agency
(DERA). It is made available to Recipients with a
royalty-free licence for its use, reproduction, transfer
to other parties and amendment for any purpose not excluding
product development provided that any such use et cetera
shall be deemed to be acceptance of the following conditions:-
(1) Its Recipients shall ensure that this Notice is
reproduced upon any copies or amended versions of it;
(2) Any amended version of it shall be clearly marked to
show both the nature of and the organisation responsible
for the relevant amendment or amendments;
(3) Its onward transfer from a recipient to another
party shall be deemed to be that party's acceptance of
these conditions;
(4) DERA gives no warranty or assurance as to its
quality or suitability for any purpose and DERA accepts
no liability whatsoever in relation to any use to which
it may be put.
*/
/**** syntax.h --- Character classification.
*
** Author: Steve Folkes <smf@hermes.mod.uk>
*
**** Commentary:
*
***=== INTRODUCTION =========================================================
*
* This file specifies the interface to a number of syntax table manipulation
* functions. I ought to be able to use <ctype.h> for this, but I can't
* because it doesn't have routines to get the numeric value for alphabetic
* characters (amongst other omissions). As I need to do this here, I might
* as well put in support for everything.
*
* It is assumed elsewhere (in association with the input stream facility
* specified in the file "istream.h") that the null and newline characters are
* white space, and have no digit value.
*
***=== CONSTANTS ============================================================
*
** Constant: SYNTAX_NO_VALUE
*
* This value is returned by the ``syntax_value'' function for characters that
* do not have a digit value.
*
***=== FUNCTIONS ============================================================
*
** Function: int syntax_value(char c)
** Exceptions:
*
* This function returns the positive integer digit value that the specified
* character should have, or ``SYNTAX_NO_VALUE'' if it has no value.
*
** Function: char syntax_upcase(char c)
** Exceptions:
*
* This function returns the upper case version of the specified character if
* it has one, otherwise it just returns the character.
*
** Function: char syntax_downcase(char c)
** Exceptions:
*
* This function returns the lower case version of the specified character if
* it has one, otherwise it just returns the character.
*
** Function: BoolT syntax_is_white_space(char c)
*
* This function returns true if the specified character is a white space
* character, and false otherwise.
*
** Function: BoolT syntax_is_printable(char c)
** Exceptions:
*
* This function returns true if the specified character can be printed, and
* false otherwise.
*
** Function: BoolT syntax_is_letter(char c)
** Exceptions:
*
* This function returns true if the specified character is a letter, and
* false otherwise.
*
** Function: BoolT syntax_is_digit(char c)
** Exceptions:
*
* This function returns true if the specified character is a decimal digit,
* and false otherwise.
*
**** Change Log:
* $Log: syntax.h,v $
* Revision 1.1.1.1 1998/01/17 15:57:18 release
* First version to be checked into rolling release.
*
* Revision 1.2 1994/12/12 11:45:54 smf
* Performing changes for 'CR94_178.sid+tld-update' - bringing in line with
* OSSG C Coding Standards.
*
* Revision 1.1.1.1 1994/07/25 16:06:13 smf
* Initial import of os-interface shared files.
*
**/
/****************************************************************************/
#ifndef H_SYNTAX
#define H_SYNTAX
#include "os-interface.h"
/*--------------------------------------------------------------------------*/
#define SYNTAX_NO_VALUE (-1)
/*--------------------------------------------------------------------------*/
extern int syntax_value
(char);
extern char syntax_upcase
(char);
extern char syntax_downcase
(char);
extern BoolT syntax_is_white_space
(char);
extern BoolT syntax_is_printable
(char);
extern BoolT syntax_is_letter
(char);
extern BoolT syntax_is_digit
(char);
#endif /* !defined (H_SYNTAX) */