xref: /netbsd/usr.sbin/envstat/config_yacc.y (revision 6550d01e)
1 /* 	$NetBSD: config_yacc.y,v 1.4 2008/07/17 16:24:55 drochner Exp $	*/
2 
3 /*-
4  * Copyright (c) 2007 Juan Romero Pardines.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 %{
29 
30 #include <sys/cdefs.h>
31 #ifndef lint
32 __RCSID("$NetBSD: config_yacc.y,v 1.4 2008/07/17 16:24:55 drochner Exp $");
33 #endif /* not lint */
34 
35 #include <stdio.h>
36 #include <string.h>
37 #include <stdarg.h>
38 #include <err.h>
39 #include <errno.h>
40 #include <stdbool.h>
41 #include <stdlib.h>
42 
43 #include <prop/proplib.h>
44 
45 #include "envstat.h"
46 
47 int yylex(void);
48 int yyparse(void);
49 int yyerror(const char *, ...);
50 void yyrestart(FILE *);
51 
52 int yyline;
53 char *yytext;
54 static prop_dictionary_t kdict;
55 
56 %}
57 
58 %token EOL EQUAL LBRACE RBRACE
59 %token STRING NUMBER SENSOR
60 %token SENSOR_PROP DEVICE_PROP
61 %token <string>	SENSOR STRING SENSOR_PROP DEVICE_PROP
62 %union {
63 	char *string;
64 }
65 
66 %%
67 
68 main	:	devices
69      	|			{ exit(EXIT_SUCCESS); }
70      	;
71 
72 devices	:	device
73 	|	devices device
74 	;
75 
76 device	:	STRING LBRACE props RBRACE
77 				{ config_devblock_add($1, kdict); }
78 	;
79 
80 props	:	sensor
81 	|	props sensor
82 	|	devprop
83 	|	props devprop
84 	;
85 
86 sensor	:	SENSOR LBRACE params RBRACE
87 				{ config_dict_add_prop("index", $1);
88 				  config_dict_mark(); }
89 	;
90 
91 params	:	prop
92 	|	params prop
93 	;
94 
95 prop	:	SENSOR_PROP EQUAL STRING EOL
96      				{ config_dict_add_prop($1, $3); }
97 	;
98 
99 devprop	:	DEVICE_PROP EQUAL STRING EOL
100 				{ config_dict_adddev_prop($1, $3, yyline); }
101 	;
102 
103 
104 %%
105 
106 int
107 yyerror(const char *fmt, ...)
108 {
109 	va_list ap;
110 
111 	va_start(ap, fmt);
112 	fprintf(stderr, "%s: ", getprogname());
113 	vfprintf(stderr, fmt, ap);
114 	fprintf(stderr, " in line %d\n", yyline);
115 	va_end(ap);
116 
117 	exit(EXIT_FAILURE);
118 }
119 
120 void
121 config_parse(FILE *f, prop_dictionary_t d)
122 {
123 	kdict = prop_dictionary_copy(d);
124 	yyrestart(f);
125 	yyline = 1;
126 	yyparse();
127 }
128