/* $NetBSD: conf_tok.l,v 1.5 2015/01/17 17:46:31 christos Exp $ */
%{
/*
* Copyright (c) 1997-2014 Erez Zadok
* Copyright (c) 1989 Jan-Simon Pendry
* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* 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 University 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 REGENTS 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 REGENTS 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.
*
*
* File: am-utils/amd/conf_tok.l
*
*/
/*
* Lexical analyzer for AMD configuration parser.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
/*
* Some systems include a definition for the macro ECHO in <sys/ioctl.h>,
* and their (bad) version of lex defines it too at the very beginning of
* the generated lex.yy.c file (before it can be easily undefined),
* resulting in a conflict. So undefine it here before needed.
* Luckily, it does not appear that this macro is actually used in the rest
* of the generated lex.yy.c file.
*/
#ifdef ECHO
# undef ECHO
#endif /* ECHO */
#include <am_defs.h>
#include <amd.h>
#include <conf_parse.h>
/* and once again undefine this, just in case */
#ifdef ECHO
# undef ECHO
#endif /* ECHO */
/*
* There are some things that need to be defined only if using GNU flex.
* These must not be defined if using standard lex
*/
#ifdef FLEX_SCANNER
# ifndef ECHO
# define ECHO __IGNORE(fwrite( yytext, yyleng, 1, yyout ))
# endif /* not ECHO */
#endif /* FLEX_SCANNER */
int ayylineno = 0;
int yylex(void);
/*
* some systems such as DU-4.x have a different GNU flex in /usr/bin
* which automatically generates yywrap macros and symbols. So I must
* distinguish between them and when yywrap is actually needed.
*/
#if !defined(yywrap) || defined(yylex)
int yywrap(void);
#endif /* not yywrap or yylex */
#define TOK_DEBUG 0
#if TOK_DEBUG
# define dprintf(f,s) fprintf(stderr, (f), ayylineno, (s))
# define amu_return(v)
#else /* not TOK_DEBUG */
# define dprintf(f,s)
# define amu_return(v) return((v))
#endif /* not TOK_DEBUG */
/* no need to use yywrap() */
#define YY_SKIP_YYWRAP
%}
/* This option causes Solaris lex to fail. Use flex. See BUGS file */
/* no need to use yyunput() */
%option nounput
%option noinput
/* allocate more output slots so lex scanners don't run out of mem */
%o 1024
DIGIT [0-9]
ALPHA [A-Za-z]
ALPHANUM [A-Za-z0-9]
SYMBOL [A-Za-z0-9_-]
PATH [A-Za-z0-9_-/]
NONWSCHAR [^ \t\n\[\]=]
NONWSEQCHAR [^ \t\n\[\]]
NONNL [^\n]
NONQUOTE [^\"]
%%
\n {
ayylineno++;
amu_return(NEWLINE);
}
\[ {
dprintf("%8d: Left bracket \"%s\"\n", yytext);
conf_lval.strtype = xstrdup(yytext);
amu_return(LEFT_BRACKET);
}
\] {
dprintf("%8d: Right bracket \"%s\"\n", yytext);
conf_lval.strtype = xstrdup(yytext);
amu_return(RIGHT_BRACKET);
}
= {
dprintf("%8d: Equal \"%s\"\n", yytext);
conf_lval.strtype = xstrdup(yytext);
amu_return(EQUAL);
}
[ \t]* {
dprintf("%8d: Whitespace \"%s\"\n", yytext);
}
"#"[^\n]*\n {
/* a comment line includes the terminating \n */
ayylineno++;
yytext[strlen((char *)yytext)-1] = '\0';
dprintf("%8d: Comment \"%s\"\n", yytext);
}
{NONWSCHAR}{NONWSCHAR}* {
dprintf("%8d: Non-WS string \"%s\"\n", yytext);
conf_lval.strtype = xstrdup(yytext);
amu_return(NONWS_STRING);
}
\"{NONQUOTE}{NONQUOTE}*\" {
dprintf("%8d: QUOTED-Non-WS-EQ string \"%s\"\n", yytext);
/* must strip quotes */
yytext[strlen((char *)yytext)-1] = '\0';
conf_lval.strtype = xstrdup(&yytext[1]);
amu_return(QUOTED_NONWSEQ_STRING);
}
{NONWSEQCHAR}{NONWSEQCHAR}* {
dprintf("%8d: Non-WS-EQ string \"%s\"\n", yytext);
conf_lval.strtype = xstrdup(yytext);
amu_return(NONWSEQ_STRING);
}
%%
/*
* some systems such as DU-4.x have a different GNU flex in /usr/bin
* which automatically generates yywrap macros and symbols. So I must
* distinguish between them and when yywrap is actually needed.
*/
#if !defined(yywrap) || defined(yylex)
int yywrap(void)
{
return 1;
}
#endif /* not yywrap or yylex */
