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/*
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Crown Copyright (c) 1997
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This TenDRA(r) Computer Program is subject to Copyright
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owned by the United Kingdom Secretary of State for Defence
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acting through the Defence Evaluation and Research Agency
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(DERA). It is made available to Recipients with a
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royalty-free licence for its use, reproduction, transfer
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to other parties and amendment for any purpose not excluding
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product development provided that any such use et cetera
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shall be deemed to be acceptance of the following conditions:-
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(1) Its Recipients shall ensure that this Notice is
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reproduced upon any copies or amended versions of it;
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(2) Any amended version of it shall be clearly marked to
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show both the nature of and the organisation responsible
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for the relevant amendment or amendments;
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(3) Its onward transfer from a recipient to another
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party shall be deemed to be that party's acceptance of
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these conditions;
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(4) DERA gives no warranty or assurance as to its
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quality or suitability for any purpose and DERA accepts
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no liability whatsoever in relation to any use to which
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it may be put.
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*/
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/**** syntax.c --- Character classification.
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*
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** Author: Steve Folkes <smf@hermes.mod.uk>
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*
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**** Commentary:
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*
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* This file implements the syntax table facility specified in the file
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* "syntax.h". See that file for more details.
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*
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* This particular implementation assumes that the ASCII character set is
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* being used. It will need changing for other character sets.
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*
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**** Change Log:
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* $Log: syntax.c,v $
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* Revision 1.1.1.1 1998/01/17 15:57:18 release
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* First version to be checked into rolling release.
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*
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* Revision 1.2 1994/12/12 11:45:52 smf
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* Performing changes for 'CR94_178.sid+tld-update' - bringing in line with
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* OSSG C Coding Standards.
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*
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* Revision 1.1.1.1 1994/07/25 16:06:12 smf
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* Initial import of os-interface shared files.
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*
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**/
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/****************************************************************************/
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#include "syntax.h"
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/*--------------------------------------------------------------------------*/
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int
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syntax_value PROTO_N ((c))
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PROTO_T (char c)
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{
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if ((c >= '0') && (c <= '9')) {
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return (c - '0');
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} else if ((c >= 'A') && (c <= 'Z')) {
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return (c - 'A' + 10);
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} else if ((c >= 'a') && (c <= 'z')) {
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return (c - 'a' + 10);
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}
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return (SYNTAX_NO_VALUE);
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}
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char
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syntax_upcase PROTO_N ((c))
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PROTO_T (char c)
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{
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if ((c >= 'a') && (c <= 'z')) {
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return ((char) (c - 'a' + 'A'));
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}
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return (c);
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}
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char
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syntax_downcase PROTO_N ((c))
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PROTO_T (char c)
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{
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if ((c >= 'A') && (c <= 'Z')) {
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return ((char) (c - 'A' + 'a'));
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}
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return (c);
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}
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BoolT
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syntax_is_white_space PROTO_N ((c))
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PROTO_T (char c)
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{
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return ((c < 33) || (c > 126));
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}
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BoolT
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syntax_is_printable PROTO_N ((c))
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PROTO_T (char c)
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{
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return ((c > 31) && (c < 127));
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}
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BoolT
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syntax_is_letter PROTO_N ((c))
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PROTO_T (char c)
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{
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return (((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')));
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}
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BoolT
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syntax_is_digit PROTO_N ((c))
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PROTO_T (char c)
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{
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return ((c >= '0') && (c <= '9'));
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}
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