token.l revision 107665 
1%{
2/*-
3 * DEVD (Device action daemon)
4 *
5 * Copyright (c) 2002 M. Warner Losh <imp@freebsd.org>.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: head/sbin/devd/token.l 107665 2002-12-07 08:04:36Z imp $
30 */
31
32#include <ctype.h>
33#include <stdlib.h>
34#include <string.h>
35#include <syslog.h>
36#include "devd.h"
37#include "y.tab.h"
38
39int lineno = 1;
40#define YY_NO_UNPUT
41
42static void
43update_lineno(const char *cp)
44{
45	while (*cp)
46		if (*cp++ == '\n')
47			lineno++;
48}
49
50%}
51
52%%
53
54[ \t]+			;
55\n			lineno++;
56;			{ return SEMICOLON; }
57#.*$			;
58\/\/.*$			;
59\/\*(.|\n)*\*\/		{ update_lineno(yytext); }
60\{			{ return BEGINBLOCK; }
61\}			{ return ENDBLOCK; }
62[0-9]+			{ yylval.i = atoi(yytext); return NUMBER; }
63\"[^"]+\"		{
64				update_lineno(yytext);
65				int len = strlen(yytext) - 2;
66				char *walker;
67				int i;
68				if ((yylval.str = (char *) malloc(len + 1)) == NULL)
69					goto out;
70				walker = yylval.str;
71				for (i = 1; i <= len; i++) {
72					if (yytext[i] == '\\' &&
73					    yytext[i + 1] == '\n') {
74						i += 2;
75						while(isspace(yytext[i]))
76							i++;
77					}
78					*walker++ = yytext[i];
79				}
80				*walker++ = '\0';
81			out:;
82				return STRING;
83			}
84
85
86options			{ return OPTIONS; }
87set			{ return SET; }
88directory		{ return DIRECTORY; }
89pid-file		{ return PID_FILE; }
90attach			{ return ATTACH; }
91detach			{ return DETACH; }
92device-name		{ return DEVICE_NAME; }
93action			{ return ACTION; }
94match			{ return MATCH; }
95nomatch			{ return NOMATCH; }
96[A-Za-z][A-Za-z0-9-]*	{
97				yylval.str = strdup(yytext);
98				return ID;
99			}
100%%
101
102void
103yyerror(const char *s)
104{
105	syslog(LOG_ERR, "line %d: %s%s %s.\n", lineno, yytext, yytext?":":"", s);
106}
107