contrib/amd/amd/conf_parse.y

   1 /*
   2  * Copyright (c) 1997-1999 Erez Zadok
   3  * Copyright (c) 1989 Jan-Simon Pendry
   4  * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
   5  * Copyright (c) 1989 The Regents of the University of California.
   6  * All rights reserved.
   7  *
   8  * This code is derived from software contributed to Berkeley by
   9  * Jan-Simon Pendry at Imperial College, London.
  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 acknowledgment:
  21  *      This product includes software developed by the University of
  22  *      California, Berkeley and its contributors.
  23  * 4. Neither the name of the University nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  *
  39  *      %W% (Berkeley) %G%
  40  *
  41  * $Id: conf_parse.y,v 1.3 1999/04/16 14:20:59 ezk Exp $
  42  *
  43  */
  44
  45 %{
  46 #ifdef HAVE_CONFIG_H
  47 # include <config.h>
  48 #endif /* HAVE_CONFIG_H */
  49 #include <am_defs.h>
  50 #include <amd.h>
  51
  52 /* AIX requires this to be the first thing in the file. */
  53 #ifndef __GNUC__
  54 # if HAVE_ALLOCA_H
  55 #  include <alloca.h>
  56 # else /* not HAVE_ALLOCA_H */
  57 #  ifdef _AIX
  58 #pragma alloca
  59 #  else /* not _AIX */
  60 #   ifndef alloca
  61   /* predefined by HP cc +Olibcalls */
  62 voidp alloca();
  63 #   endif /* not alloca */
  64 #  endif /* not _AIX */
  65 # endif /* not HAVE_ALLOCA_H */
  66 #endif /* not __GNUC__ */
  67
  68 extern char *yytext;
  69 extern int yylineno;
  70 extern int yylex(void);
  71
  72 static int yyerror(const char *s);
  73 static int retval;
  74 static char *header_section = NULL; /* start with no header section */
  75
  76 #define YYDEBUG 1
  77
  78 #define PARSE_DEBUG 0
  79
  80 #if PARSE_DEBUG
  81 # define dprintf(f,s) fprintf(stderr, (f), yylineno, (s))
  82 # define amu_return(v)
  83 #else
  84 # define dprintf(f,s)
  85 # define amu_return(v) return((v))
  86 #endif /* PARSE_DEBUG */
  87
  88 %}
  89
  90 %union {
  91 char *strtype;
  92 }
  93
  94 %token LEFT_BRACKET RIGHT_BRACKET EQUAL
  95 %token NEWLINE
  96 %token <strtype> NONWS_STRING
  97 %token <strtype> NONWSEQ_STRING
  98 %token <strtype> QUOTED_NONWSEQ_STRING
  99
 100 %start file
 101 %%
 102
 103 /****************************************************************************/
 104 file            : { yydebug = PARSE_DEBUG; } newlines map_sections
 105                 | { yydebug = PARSE_DEBUG; } map_sections
 106                 ;
 107
 108 newlines        : NEWLINE
 109                 | NEWLINE newlines
 110                 ;
 111
 112 map_sections    : map_section
 113                 | map_section map_sections
 114                 ;
 115
 116 map_section     : sec_header kv_pairs
 117                 ;
 118
 119 sec_header      : LEFT_BRACKET NONWS_STRING RIGHT_BRACKET NEWLINE
 120                 {
 121                   if (yydebug)
 122                     fprintf(stderr, "sec_header1 = \"%s\"\n", $2);
 123                   header_section = $2;
 124                 }
 125                 ;
 126
 127 kv_pairs        : kv_pair
 128                 | kv_pair kv_pairs
 129                 ;
 130
 131 kv_pair         : NONWS_STRING EQUAL NONWS_STRING NEWLINE
 132                 {
 133                   if (yydebug)
 134                     fprintf(stderr,"parse1: key=\"%s\", val=\"%s\"\n", $1, $3);
 135                   retval = set_conf_kv(header_section, $1, $3);
 136                   if (retval != 0) {
 137                     yyerror("syntax error");
 138                     YYABORT;
 139                   }
 140                 }
 141                 | NONWS_STRING EQUAL NONWSEQ_STRING NEWLINE
 142                 {
 143                   if (yydebug)
 144                     fprintf(stderr,"parse2: key=\"%s\", val=\"%s\"\n", $1, $3);
 145                   retval = set_conf_kv(header_section, $1, $3);
 146                   if (retval != 0) {
 147                     yyerror("syntax error");
 148                     YYABORT;
 149                   }
 150                 }
 151                 | NONWS_STRING EQUAL QUOTED_NONWSEQ_STRING NEWLINE
 152                 {
 153                   if (yydebug)
 154                     fprintf(stderr,"parse3: key=\"%s\", val=\"%s\"\n", $1, $3);
 155                   retval = set_conf_kv(header_section, $1, $3);
 156                   if (retval != 0) {
 157                     yyerror("syntax error");
 158                     YYABORT;
 159                   }
 160                 }
 161                 | NEWLINE
 162                 ;
 163
 164 /****************************************************************************/
 165 %%
 166
 167 static int
 168 yyerror(const char *s)
 169 {
 170   fprintf(stderr, "AMDCONF: %s on line %d (section %s)\n",
 171           s, yylineno,
 172           (header_section ? header_section : "null"));
 173   exit(1);
 174   return 1;     /* to full compilers that insist on a return statement */
 175 }