2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Edward Wang at The University of California, Berkeley.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 static char sccsid[] = "@(#)var.c 8.1 (Berkeley) 6/6/93";
39 static char rcsid[] = "@(#)$FreeBSD$";
49 var_set1(head, name, v)
54 register struct var **p;
55 register struct var *r;
58 /* do this first, easier to recover */
60 if (val.v_type == V_STR && val.v_str != 0 &&
61 (val.v_str = str_cpy(val.v_str)) == 0)
63 if (*(p = var_lookup1(head, name)) == 0) {
64 r = (struct var *) malloc(sizeof (struct var));
69 if ((r->r_name = str_cpy(name)) == 0) {
74 r->r_left = r->r_right = 0;
85 var_setstr1(head, name, str)
94 return var_set1(head, name, &v);
98 var_setnum1(head, name, num)
107 return var_set1(head, name, &v);
110 var_unset1(head, name)
114 register struct var **p;
115 register struct var *r;
117 if (*(p = var_lookup1(head, name)) == 0)
132 register struct var **p;
138 if ((cmp = strcmp(name, (*p)->r_name)) < 0)
148 var_walk1(r, func, a)
149 register struct var *r;
155 if (var_walk1(r->r_left, func, a) < 0 || (*func)(a, r) < 0
156 || var_walk1(r->r_right, func, a) < 0)