/*      $NetBSD: conf_parse.y,v 1.1.1.3 2015/01/17 16:34:15 christos Exp $      */

/*
* Copyright (c) 1997-2014 Erez Zadok
* Copyright (c) 1989 Jan-Simon Pendry
* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*
* File: am-utils/amd/conf_parse.y
*
*/

%{
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <amd.h>

extern char *yytext;
extern int ayylineno;
extern int yylex(void);

static int yyerror(const char *s);
static int retval;
static char *header_section = NULL; /* start with no header section */

#define YYDEBUG 1

#define PARSE_DEBUG 0

#if PARSE_DEBUG
# define dprintf(f,s) fprintf(stderr, (f), ayylineno, (s))
# define amu_return(v)
#else /* not PARSE_DEBUG */
# define dprintf(f,s)
# define amu_return(v) return((v))
#endif /* not PARSE_DEBUG */

%}

%union {
char *strtype;
}

%token LEFT_BRACKET RIGHT_BRACKET EQUAL
%token NEWLINE
%token <strtype> NONWS_STRING
%token <strtype> NONWSEQ_STRING
%token <strtype> QUOTED_NONWSEQ_STRING

%start file
%%

/****************************************************************************/
file            : { yydebug = PARSE_DEBUG; } newlines map_sections
               | { yydebug = PARSE_DEBUG; } map_sections
               ;

newlines        : NEWLINE
               | NEWLINE newlines
               ;

map_sections    : map_section
               | map_section map_sections
               ;

map_section     : sec_header kv_pairs
               ;

sec_header      : LEFT_BRACKET NONWS_STRING RIGHT_BRACKET NEWLINE
               {
                 if (yydebug)
                   fprintf(stderr, "sec_header1 = \"%s\"\n", $2);
                 header_section = $2;
               }
               ;

kv_pairs        : kv_pair
               | kv_pair kv_pairs
               ;

kv_pair         : NONWS_STRING EQUAL NONWS_STRING NEWLINE
               {
                 if (yydebug)
                   fprintf(stderr,"parse1: key=\"%s\", val=\"%s\"\n", $1, $3);
                 retval = set_conf_kv(header_section, $1, $3);
                 if (retval != 0) {
                   yyerror("syntax error");
                   YYABORT;
                 }
               }
               | NONWS_STRING EQUAL NONWSEQ_STRING NEWLINE
               {
                 if (yydebug)
                   fprintf(stderr,"parse2: key=\"%s\", val=\"%s\"\n", $1, $3);
                 retval = set_conf_kv(header_section, $1, $3);
                 if (retval != 0) {
                   yyerror("syntax error");
                   YYABORT;
                 }
               }
               | NONWS_STRING EQUAL QUOTED_NONWSEQ_STRING NEWLINE
               {
                 if (yydebug)
                   fprintf(stderr,"parse3: key=\"%s\", val=\"%s\"\n", $1, $3);
                 retval = set_conf_kv(header_section, $1, $3);
                 if (retval != 0) {
                   yyerror("syntax error");
                   YYABORT;
                 }
               }
               | NEWLINE
               ;

/****************************************************************************/
%%

static int
yyerror(const char *s)
{
 fprintf(stderr, "AMDCONF: %s on line %d (section %s)\n",
         s, ayylineno,
         (header_section ? header_section : "null"));
 exit(1);
 return 1;     /* to full compilers that insist on a return statement */
}