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
36 static char sccsid[] = "@(#)lookup.c 8.1 (Berkeley) 6/9/93";
38 static const char rcsid[] =
39 "$FreeBSD: src/usr.bin/rdist/lookup.c,v 1.6 1999/08/28 01:05:07 peter Exp $";
51 struct namelist *s_value;
52 struct syment *s_next;
55 static struct syment *hashtab[HASHSIZE];
58 * Define a variable from a command line argument.
64 register char *cp, *s;
65 register struct namelist *nl;
66 struct namelist *value = NULL;
69 printf("define(%s)\n", name);
71 cp = index(name, '=');
74 else if (cp[1] == '\0') {
77 } else if (cp[1] != '(') {
85 while (*cp == ' ' || *cp == '\t');
95 while (*s == ' ' || *s == '\t')
104 value = nl = makenl(cp);
106 nl->n_next = makenl(cp);
114 (void) lookup(name, REPLACE, value);
118 * Lookup name in the table and return a pointer to it.
119 * LOOKUP - just do lookup, return NULL if not found.
120 * INSERT - insert name with value, error if already defined.
121 * REPLACE - insert or replace name with value.
125 lookup(name, action, value)
128 struct namelist *value;
132 register struct syment *s;
136 printf("lookup(%s, %d, %p)\n", name, action, value);
139 for (cp = name; *cp; )
143 for (s = hashtab[n]; s != NULL; s = s->s_next) {
144 if (strcmp(name, s->s_name))
146 if (action != LOOKUP) {
147 if (action != INSERT || s->s_type != CONST) {
148 (void)snprintf(buf, sizeof(buf),
149 "%s redefined", name);
156 if (action == LOOKUP) {
157 (void)snprintf(buf, sizeof(buf), "%s undefined", name);
164 fatal("ran out of memory\n");
165 s->s_next = hashtab[n];
167 s->s_type = action == INSERT ? VAR : CONST;