NetBSD/sbin/cgdconfig/cgdlex.l

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%{
/* $NetBSD: cgdlex.l,v 1.5 2009/10/29 14:49:03 christos Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Roland C. Dowdeswell.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: cgdlex.l,v 1.5 2009/10/29 14:49:03 christos Exp $");
#endif
#include <err.h>
#include <stdio.h>
#include "utils.h"
#include "cgdparse.h"
/*
* We use macros here to separate the C from the tokeniser, to
* ease reading each.
*/
#define RETSTRING(x) do { \
yylval.string = string_new(yytext, yyleng); \
return (x); \
} while (0)
#define RETTOKEN(x) do { \
yylval.token.text = yytext; \
yylval.token.length = yyleng; \
return (x); \
} while (0)
#define RETINTEGER(x) do { \
yylval.integer = atoi(yytext); \
return (x); \
} while (0)
#define QUOTEDBEGIN() do { \
BEGIN(quoted); \
quoted_string = string_zero(); \
} while (0)
#define QUOTEDADD() do { \
string_t *tmp; \
\
tmp = string_new(yytext, yyleng); \
quoted_string = string_add_d(quoted_string, tmp); \
} while (0)
#define RETQUOTED(x) do { \
yylval.string = quoted_string; \
quoted_string = NULL; \
BEGIN(INITIAL); \
return(x); \
} while (0)
int yylineno;
string_t *quoted_string;
void yyerror(const char *);
int yylex(void);
%}
%x quoted
%option nounput
%%
[0-9]+ { RETINTEGER(INTEGER); }
algorithm { RETTOKEN(ALGORITHM); }
keylength { RETTOKEN(KEYLENGTH); }
iv-method { RETTOKEN(IVMETHOD); }
verify_method { RETTOKEN(VERIFY_METHOD); }
keygen { RETTOKEN(KEYGEN); }
salt { RETTOKEN(SALT); }
iterations { RETTOKEN(ITERATIONS); }
key { RETTOKEN(KEY); }
cmd { RETTOKEN(CMD); }
keygen_method { RETTOKEN(KEYGEN_METHOD); }
keygen_salt { RETTOKEN(KEYGEN_SALT); }
keygen_iterations { RETTOKEN(KEYGEN_ITERATIONS); }
xor_key { RETTOKEN(XOR_KEY); }
[;\n] { return EOL; }
\\\n /* ignore a quoted nl */
[ \t] /* ignore spaces and tabs */
#[^;\n]* /* ignore comments */
[^ }{\t\n;"]+ { RETSTRING(STRINGLIT); }
\" { QUOTEDBEGIN(); }
<quoted>[^\"]+ { QUOTEDADD(); }
<quoted>\" { RETQUOTED(STRINGLIT); }
. { return yytext[0]; }
%%
void
yyerror(const char *msg)
{
warnx("%s line %d: %s at '%s'", "foo", yylineno, msg, yytext);
}