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nslexer.l revision 1.7 
      1 %{
      2 /*	$NetBSD: nslexer.l,v 1.7 2004/01/25 16:38:15 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 1.7 2004/01/25 16:38:15 lukem Exp $");
     43 #endif /* LIBC_SCCS and not lint */
     44 
     45 #include "namespace.h"
     46 #include <ctype.h>
     47 #define _NS_PRIVATE
     48 #include <nsswitch.h>
     49 #include <string.h>
     50 #include <syslog.h>
     51 
     52 #include "nsparser.h"
     53 
     54 #define YY_NO_UNPUT
     55 
     56 %}
     57 
     58 %option yylineno
     59 %option never-interactive
     60 
     61 BLANK		[ \t]
     62 CR		\n
     63 STRING		[a-zA-Z][a-zA-Z0-9_]*
     64 
     65 %%
     66 
     67 {BLANK}+	;			/* skip whitespace */
     68 
     69 #.*		;			/* skip comments */
     70 
     71 \\{CR}		;			/* allow continuation */
     72 
     73 {CR}		return NL;
     74 
     75 [sS][uU][cC][cC][eE][sS][sS]		return SUCCESS;
     76 [uU][nN][aA][vV][aA][iI][lL]		return UNAVAIL;
     77 [nN][oO][tT][fF][oO][uU][nN][dD]	return NOTFOUND;
     78 [tT][rR][yY][aA][gG][aA][iI][nN]	return TRYAGAIN;
     79 
     80 [rR][eE][tT][uU][rR][nN]		return RETURN;
     81 [cC][oO][nN][tT][iI][nN][uU][eE]	return CONTINUE;
     82 
     83 {STRING}	{
     84 			char *p;
     85 			size_t i;
     86 
     87 			if ((p = strdup(yytext)) == NULL) {
     88 				syslog(LOG_ERR, "libc nsdispatch: %m");
     89 				return NL;
     90 			}
     91 
     92 			for (i = 0; i < strlen(p); i++) {
     93 				if (isupper((unsigned char)p[i]))
     94 					p[i] = tolower((unsigned char)p[i]);
     95 			}
     96 			_nsyylval.str = p;
     97 			return STRING;
     98 		}
     99 
    100 .		return yytext[0];
    101 
    102 %%
    103 
    104 #undef _nsyywrap
    105 int
    106 _nsyywrap()
    107 {
    108 	return 1;
    109 } /* _nsyywrap */
    110 
    111 void
    112 _nsyyerror(msg)
    113 	const char *msg;
    114 {
    115 
    116 	 syslog(LOG_WARNING, "libc nsdispatch: %s line %d: %s at '%s'",
    117 	    _PATH_NS_CONF, yylineno, msg, yytext);
    118 } /* _nsyyerror */
    119