1 /* $NetBSD: conf_parse.y,v 1.1.1.2 2009/03/20 20:26:48 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997-2009 Erez Zadok 5 * Copyright (c) 1989 Jan-Simon Pendry 6 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine 7 * Copyright (c) 1989 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * Jan-Simon Pendry at Imperial College, London. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgment: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * 42 * File: am-utils/amd/conf_parse.y 43 * 44 */ 45 46 %{ 47 #ifdef HAVE_CONFIG_H 48 # include <config.h> 49 #endif /* HAVE_CONFIG_H */ 50 #include <am_defs.h> 51 #include <amd.h> 52 53 extern char *yytext; 54 extern int ayylineno; 55 extern int yylex(void); 56 57 static int yyerror(const char *s); 58 static int retval; 59 static char *header_section = NULL; /* start with no header section */ 60 61 #define YYDEBUG 1 62 63 #define PARSE_DEBUG 0 64 65 #if PARSE_DEBUG 66 # define dprintf(f,s) fprintf(stderr, (f), ayylineno, (s)) 67 # define amu_return(v) 68 #else /* not PARSE_DEBUG */ 69 # define dprintf(f,s) 70 # define amu_return(v) return((v)) 71 #endif /* not PARSE_DEBUG */ 72 73 %} 74 75 %union { 76 char *strtype; 77 } 78 79 %token LEFT_BRACKET RIGHT_BRACKET EQUAL 80 %token NEWLINE 81 %token <strtype> NONWS_STRING 82 %token <strtype> NONWSEQ_STRING 83 %token <strtype> QUOTED_NONWSEQ_STRING 84 85 %start file 86 %% 87 88 /****************************************************************************/ 89 file : { yydebug = PARSE_DEBUG; } newlines map_sections 90 | { yydebug = PARSE_DEBUG; } map_sections 91 ; 92 93 newlines : NEWLINE 94 | NEWLINE newlines 95 ; 96 97 map_sections : map_section 98 | map_section map_sections 99 ; 100 101 map_section : sec_header kv_pairs 102 ; 103 104 sec_header : LEFT_BRACKET NONWS_STRING RIGHT_BRACKET NEWLINE 105 { 106 if (yydebug) 107 fprintf(stderr, "sec_header1 = \"%s\"\n", $2); 108 header_section = $2; 109 } 110 ; 111 112 kv_pairs : kv_pair 113 | kv_pair kv_pairs 114 ; 115 116 kv_pair : NONWS_STRING EQUAL NONWS_STRING NEWLINE 117 { 118 if (yydebug) 119 fprintf(stderr,"parse1: key=\"%s\", val=\"%s\"\n", $1, $3); 120 retval = set_conf_kv(header_section, $1, $3); 121 if (retval != 0) { 122 yyerror("syntax error"); 123 YYABORT; 124 } 125 } 126 | NONWS_STRING EQUAL NONWSEQ_STRING NEWLINE 127 { 128 if (yydebug) 129 fprintf(stderr,"parse2: key=\"%s\", val=\"%s\"\n", $1, $3); 130 retval = set_conf_kv(header_section, $1, $3); 131 if (retval != 0) { 132 yyerror("syntax error"); 133 YYABORT; 134 } 135 } 136 | NONWS_STRING EQUAL QUOTED_NONWSEQ_STRING NEWLINE 137 { 138 if (yydebug) 139 fprintf(stderr,"parse3: key=\"%s\", val=\"%s\"\n", $1, $3); 140 retval = set_conf_kv(header_section, $1, $3); 141 if (retval != 0) { 142 yyerror("syntax error"); 143 YYABORT; 144 } 145 } 146 | NEWLINE 147 ; 148 149 /****************************************************************************/ 150 %% 151 152 static int 153 yyerror(const char *s) 154 { 155 fprintf(stderr, "AMDCONF: %s on line %d (section %s)\n", 156 s, ayylineno, 157 (header_section ? header_section : "null")); 158 exit(1); 159 return 1; /* to full compilers that insist on a return statement */ 160 } 161