conf_parse.y revision 51292 
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 */
62voidp alloca();
63#   endif /* not alloca */
64#  endif /* not _AIX */
65# endif /* not HAVE_ALLOCA_H */
66#endif /* not __GNUC__ */
67
68extern char *yytext;
69extern int yylineno;
70extern int yylex(void);
71
72static int yyerror(const char *s);
73static int retval;
74static 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 {
91char *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/****************************************************************************/
104file		: { yydebug = PARSE_DEBUG; } newlines map_sections
105		| { yydebug = PARSE_DEBUG; } map_sections
106		;
107
108newlines	: NEWLINE
109		| NEWLINE newlines
110		;
111
112map_sections	: map_section
113		| map_section map_sections
114		;
115
116map_section	: sec_header kv_pairs
117		;
118
119sec_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
127kv_pairs	: kv_pair
128		| kv_pair kv_pairs
129		;
130
131kv_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
167static int
168yyerror(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}
176