usr.sbin/envstat/config_yacc.y

   1 /*      $NetBSD: config_yacc.y,v 1.3 2007/11/16 08:01:38 xtraeme 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 1.3 2007/11/16 08:01:38 xtraeme 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 }