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nslexer.l revision 1.3 
      1 %{
      2 /*	$NetBSD: nslexer.l,v 1.3 1999/01/25 00:16:17 lukem Exp $	*/
      3 
      4 /*-
      5  * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software contributed to The NetBSD Foundation
      9  * by Luke Mewburn.
     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 #if defined(LIBC_SCCS) && !defined(lint)
     42 __RCSID("$NetBSD: nslexer.l,v 1.3 1999/01/25 00:16:17 lukem Exp $");
     43 #endif /* LIBC_SCCS and not lint */
     44 
     45 #include <ctype.h>
     46 #include <err.h>
     47 #define _NS_PRIVATE
     48 #include <nsswitch.h>
     49 #include <string.h>
     50 
     51 #include "nsparser.h"
     52 
     53 #define YY_NO_UNPUT
     54 
     55 %}
     56 
     57 %option yylineno
     58 
     59 BLANK		[ \t]
     60 CR		\n
     61 STRING		[a-zA-Z][a-zA-Z0-9_]*
     62 
     63 %%
     64 
     65 {BLANK}+	;			/* skip whitespace */
     66 
     67 #.*		;			/* skip comments */
     68 
     69 \\{CR}		;			/* allow continuation */
     70 
     71 {CR}		return NL;
     72 
     73 [sS][uU][cC][cC][eE][sS][sS]		return SUCCESS;
     74 [uU][nN][aA][vV][aA][iI][lL]		return UNAVAIL;
     75 [nN][oO][tT][fF][oO][uU][nN][dD]	return NOTFOUND;
     76 [tT][rR][yY][aA][gG][aA][iI][nN]	return TRYAGAIN;
     77 
     78 [rR][eE][tT][uU][rR][nN]		return RETURN;
     79 [cC][oO][nN][tT][iI][nN][uU][eE]	return CONTINUE;
     80 
     81 {STRING}	{
     82 			char *p;
     83 			int i;
     84 
     85 			if ((p = strdup(yytext)) == NULL)
     86 				err(1, "nsdispatch: memory allocation failure");
     87 
     88 			for (i = 0; i < strlen(p); i++) {
     89 				if (isupper((unsigned char)p[i]))
     90 					p[i] = tolower((unsigned char)p[i]);
     91 			}
     92 			_nsyylval.str = p;
     93 			return STRING;
     94 		}
     95 
     96 [:=\[\]]	return yytext[0];
     97 
     98 .		;	/* ignore all else */
     99 
    100 %%
    101 
    102 #undef _nsyywrap
    103 int
    104 _nsyywrap()
    105 {
    106 	return 1;
    107 } /* _nsyywrap */
    108 
    109 void
    110 _nsyyerror(msg)
    111 	const char *msg;
    112 {
    113 
    114 	 warnx("%s line %d: %s at '%s'", _PATH_NS_CONF, yylineno, msg, yytext);
    115 } /* _nsyyerror */
    116