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cgdlex.l revision 1.2 
      1 %{
      2 /* $NetBSD: cgdlex.l,v 1.2 2008/04/28 20:23:08 martin Exp $ */
      3 
      4 /*-
      5  * Copyright (c) 2003 The NetBSD Foundation, Inc.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software contributed to The NetBSD Foundation
      9  * by Roland C. Dowdeswell.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 #ifndef lint
     35 __RCSID("$NetBSD: cgdlex.l,v 1.2 2008/04/28 20:23:08 martin Exp $");
     36 #endif
     37 
     38 #include <err.h>
     39 #include <stdio.h>
     40 
     41 #include "utils.h"
     42 #include "cgdparse.h"
     43 
     44 /*
     45  * We use macros here to separate the C from the tokeniser, to
     46  * ease reading each.
     47  */
     48 
     49 #define	RETSTRING(x)	do {					\
     50 		yylval.string = string_new(yytext, yyleng);	\
     51 		return (x);					\
     52 	} while (0)
     53 #define RETTOKEN(x)	do {					\
     54 		yylval.token.text = yytext;			\
     55 		yylval.token.length = yyleng;			\
     56 		return (x);					\
     57 	} while (0)
     58 #define RETINTEGER(x)	do {					\
     59 		yylval.integer = atoi(yytext);			\
     60 		return (x);					\
     61 	} while (0)
     62 
     63 int yylineno;
     64 
     65 void	yyerror(const char *);
     66 int	yylex(void);
     67 %}
     68 
     69 %%
     70 
     71 [0-9]+					{ RETINTEGER(INTEGER); }
     72 algorithm				{ RETTOKEN(ALGORITHM); }
     73 keylength				{ RETTOKEN(KEYLENGTH); }
     74 iv-method				{ RETTOKEN(IVMETHOD); }
     75 verify_method				{ RETTOKEN(VERIFY_METHOD); }
     76 keygen					{ RETTOKEN(KEYGEN); }
     77 salt					{ RETTOKEN(SALT); }
     78 iterations				{ RETTOKEN(ITERATIONS); }
     79 key					{ RETTOKEN(KEY); }
     80 keygen_method				{ RETTOKEN(KEYGEN_METHOD); }
     81 keygen_salt				{ RETTOKEN(KEYGEN_SALT); }
     82 keygen_iterations			{ RETTOKEN(KEYGEN_ITERATIONS); }
     83 xor_key					{ RETTOKEN(XOR_KEY); }
     84 [;\n]					{ return EOL; }
     85 \\\n					/* ignore a quoted nl */
     86 [ \t]					/* ignore spaces and tabs */
     87 #[^;\n]*				/* ignore comments */
     88 [^ }{\t\n;]+				{ RETSTRING(STRINGLIT); }
     89 .					{ return yytext[0]; }
     90 
     91 %%
     92 
     93 void
     94 yyerror(const char *msg)
     95 {
     96 
     97          warnx("%s line %d: %s at '%s'", "foo", yylineno, msg, yytext);
     98 }
     99