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      1 /* $NetBSD: utils.h,v 1.9 2008/05/11 03:15:21 elric Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Roland C. Dowdeswell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef CGDUTILS_H
     33 #define CGDUTILS_H
     34 
     35 #include <stdio.h>
     36 
     37 #define BITS2BYTES(n)	(((n) + 7) / 8)
     38 
     39 struct string;
     40 typedef struct string string_t;
     41 
     42 struct bits;
     43 typedef struct bits bits_t;
     44 
     45 __BEGIN_DECLS
     46 char		**words(const char *, int *);
     47 void	  	  words_free(char **, int);
     48 
     49 void		  memxor(void *, const void *, size_t);
     50 
     51 void		  free_notnull(void *);
     52 
     53 string_t	 *string_zero(void);
     54 string_t	 *string_new(const char *, size_t);
     55 string_t	 *string_dup(const string_t *);
     56 void		  string_assign(string_t **, string_t *);
     57 void		  string_free(string_t *);
     58 string_t	 *string_add(const string_t *, const string_t *);
     59 string_t	 *string_add_d(string_t *, string_t *);
     60 string_t	 *string_fromcharstar(const char *);
     61 const char	 *string_tocharstar(const string_t *);
     62 string_t	 *string_fromint(int);
     63 
     64 void		  string_fprint(FILE *, const string_t *);
     65 
     66 bits_t		 *bits_new(const void *, size_t);
     67 bits_t		 *bits_dup(const bits_t *);
     68 void		  bits_assign(bits_t **, bits_t *);
     69 void		  bits_free(bits_t *);
     70 const void	 *bits_getbuf(bits_t *);
     71 size_t		  bits_len(bits_t *);
     72 int		  bits_match(const bits_t *, const bits_t *);
     73 
     74 bits_t		 *bits_xor(const bits_t *, const bits_t *);
     75 bits_t		 *bits_xor_d(bits_t *, bits_t *);
     76 
     77 bits_t		 *bits_decode(const string_t *);
     78 bits_t		 *bits_decode_d(string_t *);
     79 string_t	 *bits_encode(const bits_t *);
     80 string_t	 *bits_encode_d(bits_t *);
     81 
     82 bits_t		 *bits_cget(const char *, size_t);
     83 bits_t		 *bits_fget(FILE *, size_t);
     84 bits_t		 *bits_getrandombits(size_t, int);
     85 
     86 void		  bits_fprint(FILE *, const bits_t *);
     87 __END_DECLS
     88 
     89 #endif
     90