1 /* @(#)parser2.c 8.1 (Berkeley) 6/6/93 */
2 /* $NetBSD: parser2.c,v 1.11 2009/04/14 08:50:06 lukem Exp $ */
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
8 * This code is derived from software contributed to Berkeley by
9 * Edward Wang at The University of California, Berkeley.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * name == 0 means we don't have a function name but
47 * want to parse the arguments anyway. flag == 0 in this case.
50 p_function(const char *name, struct value *v, int flag)
53 struct lcmd_tab *c = 0;
55 struct lcmd_arg *ap; /* this arg */
56 struct lcmd_arg *lp = 0; /* list arg */
58 struct value av[LCMD_NARG + 1];
62 if ((c = lcmd_lookup(name)))
64 else if ((a = alias_lookup(name)))
67 p_error("%s: No such command or alias.", name);
71 for (vp = av; vp < &av[LCMD_NARG + 1]; vp++)
80 if (token == T_COMMA) /* null argument */
83 if (p_expr0(&t, flag) < 0)
85 if (t.v_type == V_ERR)
88 if (token != T_ASSIGN) {
90 (c != 0 && (ap = lp) == 0 &&
91 (ap = c->lc_arg + i)->arg_name == 0)) {
92 p_error("%s: Too many arguments.", name);
98 if (p_convstr(&t) < 0)
100 tmp = t.v_type == V_STR ? t.v_str : 0;
102 if (p_expr(&t, flag) < 0) {
108 if (t.v_type == V_ERR)
113 p_error("%s: Bad alias syntax.", name);
116 for (ap = c->lc_arg, vp = av;
117 ap != 0 && ap->arg_name != 0 &&
118 (*ap->arg_name == '\0' ||
119 !str_match(tmp, ap->arg_name,
123 if (ap == 0 || ap->arg_name == 0) {
124 p_error("%s: Unknown argument \"%s\".",
135 if (ap->arg_flags & ARG_LIST) {
139 if (vp && vp->v_type != V_ERR) {
141 p_error("%s: Argument %d (%s) duplicated.",
142 name, (int)(vp - av + 1),
145 p_error("%s: Argument %d duplicated.",
146 name, (int)(vp - av + 1));
149 } else if (t.v_type == V_ERR) {
151 } else if (((ap->arg_flags&ARG_TYPE) == ARG_NUM &&
152 t.v_type != V_NUM) ||
153 ((ap->arg_flags&ARG_TYPE) == ARG_STR &&
154 t.v_type != V_STR)) {
156 p_error("%s: Argument %d (%s) type mismatch.",
157 name, (int)(vp - av + 1),
160 p_error("%s: Argument %d type mismatch.",
161 name, (int)(vp - av + 1));
170 if (token == T_COMMA)
178 else if (token != T_EOL && token != T_EOF)
179 flag = 0; /* look for legal follow set */
183 (*c->lc_func)(v, av);
185 if (a->a_flags & A_INUSE)
186 p_error("%s: Recursive alias.", a->a_name);
188 a->a_flags |= A_INUSE;
189 if (dolongcmd(a->a_buf, av, i) < 0)
191 a->a_flags &= ~A_INUSE;
200 for (vp = av; vp < &av[LCMD_NARG]; vp++)
204 for (vp = av; vp < &av[LCMD_NARG]; vp++)
210 p_assign(const char *name, struct value *v, int flag)
214 if (p_expr(v, flag) < 0) {
221 if (name && flag && var_set(name, v) == 0) {