xref: /freebsd-10-stable/crypto/heimdal/lib/asn1/symbol.c

/*
 * Copyright (c) 1997 Kungliga Tekniska H�gskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * 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. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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 "gen_locl.h"

RCSID("$Id: symbol.c,v 1.8 1999/12/02 17:05:02 joda Exp $");

static Hashtab *htab;

static int
cmp (void *a, void *b)
{
  Symbol *s1 = (Symbol *)a;
  Symbol *s2 = (Symbol *)b;

  return strcmp (s1->name, s2->name);
}

static unsigned
hash (void *a)
{
  Symbol *s = (Symbol *)a;

  return hashjpw (s->name);
}

void
initsym ()
{
  htab = hashtabnew (101, cmp, hash);
}


void
output_name (char *s)
{
  char *p;

  for (p = s; *p; ++p)
    if (*p == '-')
      *p = '_';
}

Symbol*
addsym (char *name)
{
  Symbol key, *s;

  key.name = name;
  s = (Symbol *)hashtabsearch (htab, (void *)&key);
  if (s == NULL) {
    s = (Symbol *)malloc (sizeof (*s));
    s->name = name;
    s->gen_name = strdup(name);
    output_name (s->gen_name);
    s->stype = SUndefined;
    hashtabadd (htab, s);
  }
  return s;
}