2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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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.
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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 1.2 2003/06/17 04:29:30 dillon 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.
60 register char *cp, *s;
61 register struct namelist *nl;
62 struct namelist *value = NULL;
65 printf("define(%s)\n", name);
67 cp = index(name, '=');
70 else if (cp[1] == '\0') {
73 } else if (cp[1] != '(') {
81 while (*cp == ' ' || *cp == '\t');
91 while (*s == ' ' || *s == '\t')
100 value = nl = makenl(cp);
102 nl->n_next = makenl(cp);
110 (void) lookup(name, REPLACE, value);
114 * Lookup name in the table and return a pointer to it.
115 * LOOKUP - just do lookup, return NULL if not found.
116 * INSERT - insert name with value, error if already defined.
117 * REPLACE - insert or replace name with value.
121 lookup(name, action, value)
124 struct namelist *value;
128 register struct syment *s;
132 printf("lookup(%s, %d, %p)\n", name, action, value);
135 for (cp = name; *cp; )
139 for (s = hashtab[n]; s != NULL; s = s->s_next) {
140 if (strcmp(name, s->s_name))
142 if (action != LOOKUP) {
143 if (action != INSERT || s->s_type != CONST) {
144 (void)snprintf(buf, sizeof(buf),
145 "%s redefined", name);
152 if (action == LOOKUP) {
153 (void)snprintf(buf, sizeof(buf), "%s undefined", name);
160 fatal("ran out of memory\n");
161 s->s_next = hashtab[n];
163 s->s_type = action == INSERT ? VAR : CONST;