crypto/dist/heimdal/lib/asn1/symbol.c

   1 /*
   2  * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  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  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "gen_locl.h"
  35 #include "lex.h"
  36
  37 __RCSID("$Heimdal: symbol.c 15617 2005-07-12 06:27:42Z lha $"
  38         "$NetBSD$");
  39
  40 static Hashtab *htab;
  41
  42 static int
  43 cmp(void *a, void *b)
  44 {
  45     Symbol *s1 = (Symbol *) a;
  46     Symbol *s2 = (Symbol *) b;
  47
  48     return strcmp(s1->name, s2->name);
  49 }
  50
  51 static unsigned
  52 hash(void *a)
  53 {
  54     Symbol *s = (Symbol *) a;
  55
  56     return hashjpw(s->name);
  57 }
  58
  59 void
  60 initsym(void)
  61 {
  62     htab = hashtabnew(101, cmp, hash);
  63 }
  64
  65
  66 void
  67 output_name(char *s)
  68 {
  69     char *p;
  70
  71     for (p = s; *p; ++p)
  72         if (*p == '-')
  73             *p = '_';
  74 }
  75
  76 Symbol *
  77 addsym(char *name)
  78 {
  79     Symbol key, *s;
  80
  81     key.name = name;
  82     s = (Symbol *) hashtabsearch(htab, (void *) &key);
  83     if (s == NULL) {
  84         s = (Symbol *) emalloc(sizeof(*s));
  85         s->name = name;
  86         s->gen_name = estrdup(name);
  87         output_name(s->gen_name);
  88         s->stype = SUndefined;
  89         hashtabadd(htab, s);
  90     }
  91     return s;
  92 }
  93
  94 static int
  95 checkfunc(void *ptr, void *arg)
  96 {
  97     Symbol *s = ptr;
  98     if (s->stype == SUndefined) {
  99         error_message("%s is still undefined\n", s->name);
 100         *(int *) arg = 1;
 101     }
 102     return 0;
 103 }
 104
 105 int
 106 checkundefined(void)
 107 {
 108     int f = 0;
 109     hashtabforeach(htab, checkfunc, &f);
 110     return f;
 111 }