2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)lookup.c 8.1 (Berkeley) 6/9/93
34 * $FreeBSD: src/usr.bin/rdist/lookup.c,v 1.6 1999/08/28 01:05:07 peter Exp $
35 * $DragonFly: src/usr.bin/rdist/lookup.c,v 1.3 2004/07/24 19:45:10 eirikn Exp $
47 struct namelist
*s_value
;
48 struct syment
*s_next
;
51 static struct syment
*hashtab
[HASHSIZE
];
54 * Define a variable from a command line argument.
59 register char *cp
, *s
;
60 register struct namelist
*nl
;
61 struct namelist
*value
;
66 printf("define(%s)\n", name
);
68 cp
= index(name
, '=');
71 else if (cp
[1] == '\0') {
74 } else if (cp
[1] != '(') {
82 while (*cp
== ' ' || *cp
== '\t');
92 while (*s
== ' ' || *s
== '\t')
101 value
= nl
= makenl(cp
);
103 nl
->n_next
= makenl(cp
);
111 lookup(name
, REPLACE
, value
);
115 * Lookup name in the table and return a pointer to it.
116 * LOOKUP - just do lookup, return NULL if not found.
117 * INSERT - insert name with value, error if already defined.
118 * REPLACE - insert or replace name with value.
121 lookup(char *name
, int action
, struct namelist
*value
)
125 register struct syment
*s
;
129 printf("lookup(%s, %d, %p)\n", name
, action
, value
);
132 for (cp
= name
; *cp
; )
136 for (s
= hashtab
[n
]; s
!= NULL
; s
= s
->s_next
) {
137 if (strcmp(name
, s
->s_name
))
139 if (action
!= LOOKUP
) {
140 if (action
!= INSERT
|| s
->s_type
!= CONST
) {
141 snprintf(buf
, sizeof(buf
),"%s redefined", name
);
148 if (action
== LOOKUP
) {
149 snprintf(buf
, sizeof(buf
), "%s undefined", name
);
156 fatal("ran out of memory\n");
157 s
->s_next
= hashtab
[n
];
159 s
->s_type
= action
== INSERT
? VAR
: CONST
;