+++ /dev/null
-/* $NetBSD: parser2.c,v 1.5 1998/08/25 20:59:42 ross Exp $ */
-
-/*
- * Copyright (c) 1983, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Edward Wang at The University of California, Berkeley.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)parser2.c 8.1 (Berkeley) 6/6/93";
-#else
-__RCSID("$NetBSD: parser2.c,v 1.5 1998/08/25 20:59:42 ross Exp $");
-#endif
-#endif /* not lint */
-
-#define EXTERN
-#include "ww.h"
-#include "defs.h"
-#include "alias.h"
-#undef EXTERN
-#include "parser.h"
-#include "var.h"
-#include "lcmd.h"
-
-/*
- * name == 0 means we don't have a function name but
- * want to parse the arguments anyway. flag == 0 in this case.
- */
-int
-p_function(name, v, flag)
- char *name;
- struct value *v;
- int flag;
-{
- struct value t;
- struct lcmd_tab *c = 0;
- struct alias *a = 0;
- struct lcmd_arg *ap; /* this arg */
- struct lcmd_arg *lp = 0; /* list arg */
- int i;
- struct value av[LCMD_NARG + 1];
- struct value *vp;
-
- if (name != 0) {
- if ((c = lcmd_lookup(name)))
- name = c->lc_name;
- else if ((a = alias_lookup(name)))
- name = a->a_name;
- else {
- p_error("%s: No such command or alias.", name);
- flag = 0;
- }
- }
- for (vp = av; vp < &av[LCMD_NARG + 1]; vp++)
- vp->v_type = V_ERR;
-
- if (token == T_LP)
- (void) s_gettok();
- i = 0;
- for (;;) {
- ap = 0;
- vp = 0;
- if (token == T_COMMA) /* null argument */
- t.v_type = V_ERR;
- else {
- if (p_expr0(&t, flag) < 0)
- break;
- if (t.v_type == V_ERR)
- flag = 0;
- }
- if (token != T_ASSIGN) {
- if (i >= LCMD_NARG ||
- (c != 0 && (ap = lp) == 0 &&
- (ap = c->lc_arg + i)->arg_name == 0)) {
- p_error("%s: Too many arguments.", name);
- flag = 0;
- } else
- vp = &av[i++];
- } else {
- char *tmp;
- if (p_convstr(&t) < 0)
- goto abort;
- tmp = t.v_type == V_STR ? t.v_str : 0;
- (void) s_gettok();
- if (p_expr(&t, flag) < 0) {
- if (tmp)
- str_free(tmp);
- p_synerror();
- goto abort;
- }
- if (t.v_type == V_ERR)
- flag = 0;
- if (tmp) {
- if (c == 0) {
- /* an aliase */
- p_error("%s: Bad alias syntax.", name);
- flag = 0;
- } else {
- for (ap = c->lc_arg, vp = av;
- ap != 0 && ap->arg_name != 0 &&
- (*ap->arg_name == '\0' ||
- !str_match(tmp, ap->arg_name,
- ap->arg_minlen));
- ap++, vp++)
- ;
- if (ap == 0 || ap->arg_name == 0) {
- p_error("%s: Unknown argument \"%s\".",
- name, tmp);
- flag = 0;
- ap = 0;
- vp = 0;
- }
- }
- str_free(tmp);
- }
- }
- if (ap != 0) {
- if (ap->arg_flags & ARG_LIST) {
- i = vp - av + 1;
- lp = ap;
- }
- if (vp->v_type != V_ERR) {
- if (*ap->arg_name)
- p_error("%s: Argument %d (%s) duplicated.",
- name, vp - av + 1,
- ap->arg_name);
- else
- p_error("%s: Argument %d duplicated.",
- name, vp - av + 1);
- flag = 0;
- vp = 0;
- } else if (t.v_type == V_ERR) {
- /* do nothing */
- } else if (((ap->arg_flags&ARG_TYPE) == ARG_NUM &&
- t.v_type != V_NUM) ||
- ((ap->arg_flags&ARG_TYPE) == ARG_STR &&
- t.v_type != V_STR)) {
- if (*ap->arg_name)
- p_error("%s: Argument %d (%s) type mismatch.",
- name, vp - av + 1,
- ap->arg_name);
- else
- p_error("%s: Argument %d type mismatch.",
- name, vp - av + 1);
- flag = 0;
- vp = 0;
- }
- }
- if (vp != 0)
- *vp = t;
- else
- val_free(t);
- if (token == T_COMMA)
- (void) s_gettok();
- }
-
- if (p_erred())
- flag = 0;
- if (token == T_RP)
- (void) s_gettok();
- else if (token != T_EOL && token != T_EOF)
- flag = 0; /* look for legal follow set */
- v->v_type = V_ERR;
- if (flag) {
- if (c != 0)
- (*c->lc_func)(v, av);
- else {
- if (a->a_flags & A_INUSE)
- p_error("%s: Recursive alias.", a->a_name);
- else {
- a->a_flags |= A_INUSE;
- if (dolongcmd(a->a_buf, av, i) < 0)
- p_memerror();
- a->a_flags &= ~A_INUSE;
- }
- }
- }
- if (p_abort()) {
- val_free(*v);
- v->v_type = V_ERR;
- goto abort;
- }
- for (vp = av; vp < &av[LCMD_NARG]; vp++)
- val_free(*vp);
- return 0;
-abort:
- for (vp = av; vp < &av[LCMD_NARG]; vp++)
- val_free(*vp);
- return -1;
-}
-
-int
-p_assign(name, v, flag)
- char *name;
- struct value *v;
- char flag;
-{
- (void) s_gettok();
-
- if (p_expr(v, flag) < 0) {
- p_synerror();
- return -1;
- }
- switch (v->v_type) {
- case V_STR:
- case V_NUM:
- if (flag && var_set(name, v) == 0) {
- p_memerror();
- val_free(*v);
- return -1;
- }
- break;
- }
- return 0;
-}
projects / apple / shell_cmds.git / blobdiff