* Copyright (c) 1983 Regents of the University of California.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 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
static char sccsid
[] = "@(#)lookup.c 5.5 (Berkeley) 6/1/90";
struct namelist
*s_value
;
static struct syment
*hashtab
[HASHSIZE
];
* Define a variable from a command line argument.
register struct namelist
*nl
;
printf("define(%s)\n", name
);
else if (cp
[1] == '\0') {
} else if (cp
[1] != '(') {
while (*cp
== ' ' || *cp
== '\t');
while (*s
== ' ' || *s
== '\t')
(void) lookup(name
, REPLACE
, value
);
* Lookup name in the table and return a pointer to it.
* LOOKUP - just do lookup, return NULL if not found.
* INSERT - insert name with value, error if already defined.
* REPLACE - insert or replace name with value.
lookup(name
, action
, value
)
register struct syment
*s
;
printf("lookup(%s, %d, %x)\n", name
, action
, value
);
for (s
= hashtab
[n
]; s
!= NULL
; s
= s
->s_next
) {
if (strcmp(name
, s
->s_name
))
if (action
!= INSERT
|| s
->s_type
!= CONST
) {
(void)sprintf(buf
, "%s redefined", name
);
(void)sprintf(buf
, "%s undefined", name
);
fatal("ran out of memory\n");
s
->s_type
= action
== INSERT
? VAR
: CONST
;