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cgdlex.l revision 1.1 
      1 %{
      2 /* $NetBSD: cgdlex.l,v 1.1 2003/03/24 02:02:50 elric 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  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *        This product includes software developed by the NetBSD
     22  *        Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 #include <sys/cdefs.h>
     41 #ifndef lint
     42 __RCSID("$NetBSD: cgdlex.l,v 1.1 2003/03/24 02:02:50 elric Exp $");
     43 #endif
     44 
     45 #include <err.h>
     46 #include <stdio.h>
     47 
     48 #include "utils.h"
     49 #include "cgdparse.h"
     50 
     51 /*
     52  * We use macros here to separate the C from the tokeniser, to
     53  * ease reading each.
     54  */
     55 
     56 #define	RETSTRING(x)	do {					\
     57 		yylval.string = string_new(yytext, yyleng);	\
     58 		return (x);					\
     59 	} while (0)
     60 #define RETTOKEN(x)	do {					\
     61 		yylval.token.text = yytext;			\
     62 		yylval.token.length = yyleng;			\
     63 		return (x);					\
     64 	} while (0)
     65 #define RETINTEGER(x)	do {					\
     66 		yylval.integer = atoi(yytext);			\
     67 		return (x);					\
     68 	} while (0)
     69 
     70 int yylineno;
     71 
     72 void	yyerror(const char *);
     73 int	yylex(void);
     74 %}
     75 
     76 %%
     77 
     78 [0-9]+					{ RETINTEGER(INTEGER); }
     79 algorithm				{ RETTOKEN(ALGORITHM); }
     80 keylength				{ RETTOKEN(KEYLENGTH); }
     81 iv-method				{ RETTOKEN(IVMETHOD); }
     82 verify_method				{ RETTOKEN(VERIFY_METHOD); }
     83 keygen					{ RETTOKEN(KEYGEN); }
     84 salt					{ RETTOKEN(SALT); }
     85 iterations				{ RETTOKEN(ITERATIONS); }
     86 key					{ RETTOKEN(KEY); }
     87 keygen_method				{ RETTOKEN(KEYGEN_METHOD); }
     88 keygen_salt				{ RETTOKEN(KEYGEN_SALT); }
     89 keygen_iterations			{ RETTOKEN(KEYGEN_ITERATIONS); }
     90 xor_key					{ RETTOKEN(XOR_KEY); }
     91 [;\n]					{ return EOL; }
     92 \\\n					/* ignore a quoted nl */
     93 [ \t]					/* ignore spaces and tabs */
     94 #[^;\n]*				/* ignore comments */
     95 [^ }{\t\n;]+				{ RETSTRING(STRINGLIT); }
     96 .					{ return yytext[0]; }
     97 
     98 %%
     99 
    100 void
    101 yyerror(const char *msg)
    102 {
    103 
    104          warnx("%s line %d: %s at '%s'", "foo", yylineno, msg, yytext);
    105 }
    106