xref: /illumos-gate/usr/src/lib/libfru/libfru/Parser.cc (revision 7c478bd9)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
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20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright (c) 2000 by Sun Microsystems, Inc.
24*7c478bd9Sstevel@tonic-gate  * All rights reserved.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate #include <pthread.h>
30*7c478bd9Sstevel@tonic-gate #include <string.h>
31*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
32*7c478bd9Sstevel@tonic-gate 
33*7c478bd9Sstevel@tonic-gate #include "Parser.h"
34*7c478bd9Sstevel@tonic-gate 
35*7c478bd9Sstevel@tonic-gate // yacc symbols
36*7c478bd9Sstevel@tonic-gate int fruparse(void);
37*7c478bd9Sstevel@tonic-gate extern int frudebug;
38*7c478bd9Sstevel@tonic-gate 
39*7c478bd9Sstevel@tonic-gate // global data to/from the lexer
40*7c478bd9Sstevel@tonic-gate pthread_mutex_t gParserLock;
41*7c478bd9Sstevel@tonic-gate fru_errno_t gParserErrno = FRU_SUCCESS;
42*7c478bd9Sstevel@tonic-gate char *gParserString = NULL;
43*7c478bd9Sstevel@tonic-gate Ancestor *gParserAnts   = NULL;
44*7c478bd9Sstevel@tonic-gate PathDef *gParserHead   = NULL;
45*7c478bd9Sstevel@tonic-gate int *gParserAbs    = NULL;
46*7c478bd9Sstevel@tonic-gate 
47*7c478bd9Sstevel@tonic-gate // returns a NULL terminated list of PathDef objects.
48*7c478bd9Sstevel@tonic-gate // and a NULL terminated list of ancestor objects this path exists in
49*7c478bd9Sstevel@tonic-gate // NOTE: ancestors may be NULL if no tags contain a valid path.
50*7c478bd9Sstevel@tonic-gate fru_errno_t
fru_field_parser(const char * path,Ancestor ** ancestors,int * absolute,PathDef ** pathDef)51*7c478bd9Sstevel@tonic-gate fru_field_parser(const char *path, Ancestor **ancestors,
52*7c478bd9Sstevel@tonic-gate 	int *absolute, PathDef **pathDef)
53*7c478bd9Sstevel@tonic-gate {
54*7c478bd9Sstevel@tonic-gate 	// lock up the globals for the parser...
55*7c478bd9Sstevel@tonic-gate 	pthread_mutex_lock(&gParserLock);
56*7c478bd9Sstevel@tonic-gate 
57*7c478bd9Sstevel@tonic-gate 	// get out a string for the parser to play with.
58*7c478bd9Sstevel@tonic-gate 	gParserString = strdup(path);
59*7c478bd9Sstevel@tonic-gate 	if (gParserString == NULL) {
60*7c478bd9Sstevel@tonic-gate 		pthread_mutex_unlock(&gParserLock);
61*7c478bd9Sstevel@tonic-gate 		return (FRU_FAILURE);
62*7c478bd9Sstevel@tonic-gate 	}
63*7c478bd9Sstevel@tonic-gate 	// save the head pointer for delete.
64*7c478bd9Sstevel@tonic-gate 	char *delPtr = gParserString;
65*7c478bd9Sstevel@tonic-gate 
66*7c478bd9Sstevel@tonic-gate 	// frudebug = 1;
67*7c478bd9Sstevel@tonic-gate 
68*7c478bd9Sstevel@tonic-gate 	// set up for return data from lexer.
69*7c478bd9Sstevel@tonic-gate 	gParserHead = NULL;
70*7c478bd9Sstevel@tonic-gate 	gParserAnts = NULL;
71*7c478bd9Sstevel@tonic-gate 	gParserErrno = FRU_SUCCESS;
72*7c478bd9Sstevel@tonic-gate 	gParserAbs = absolute;
73*7c478bd9Sstevel@tonic-gate 	*gParserAbs = 0;
74*7c478bd9Sstevel@tonic-gate 
75*7c478bd9Sstevel@tonic-gate 	int rc = fruparse();
76*7c478bd9Sstevel@tonic-gate 
77*7c478bd9Sstevel@tonic-gate 	// clean up the string we used for yacc.
78*7c478bd9Sstevel@tonic-gate 	free(delPtr);
79*7c478bd9Sstevel@tonic-gate 	gParserString = NULL;
80*7c478bd9Sstevel@tonic-gate 
81*7c478bd9Sstevel@tonic-gate 	// frudebug = 0;
82*7c478bd9Sstevel@tonic-gate 	if (rc != 0) {
83*7c478bd9Sstevel@tonic-gate 		delete gParserHead;
84*7c478bd9Sstevel@tonic-gate 		delete gParserAnts;
85*7c478bd9Sstevel@tonic-gate 		fru_errno_t err = gParserErrno;
86*7c478bd9Sstevel@tonic-gate 		pthread_mutex_unlock(&gParserLock);
87*7c478bd9Sstevel@tonic-gate 		return (err);
88*7c478bd9Sstevel@tonic-gate 	}
89*7c478bd9Sstevel@tonic-gate 
90*7c478bd9Sstevel@tonic-gate 	/* if ((gParserHead == NULL) || (gParserAnts == NULL)) { */
91*7c478bd9Sstevel@tonic-gate 	/* allow ancestors to be NULL */
92*7c478bd9Sstevel@tonic-gate 	/* some elements don't have tagged ancestors */
93*7c478bd9Sstevel@tonic-gate 	if (gParserHead == NULL) {
94*7c478bd9Sstevel@tonic-gate 		delete gParserAnts;
95*7c478bd9Sstevel@tonic-gate 		pthread_mutex_unlock(&gParserLock);
96*7c478bd9Sstevel@tonic-gate 		return (FRU_FAILURE);
97*7c478bd9Sstevel@tonic-gate 	}
98*7c478bd9Sstevel@tonic-gate 
99*7c478bd9Sstevel@tonic-gate 	*pathDef = gParserHead;
100*7c478bd9Sstevel@tonic-gate 	*ancestors = gParserAnts;
101*7c478bd9Sstevel@tonic-gate 
102*7c478bd9Sstevel@tonic-gate 	pthread_mutex_unlock(&gParserLock);
103*7c478bd9Sstevel@tonic-gate 	return (FRU_SUCCESS);
104*7c478bd9Sstevel@tonic-gate }
105