com32/menu/refstr.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2008 H. Peter Anvin - All Rights Reserved
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
   8  *   Boston MA 02110-1301, USA; either version 2 of the License, or
   9  *   (at your option) any later version; incorporated herein by reference.
  10  *
  11  * ----------------------------------------------------------------------- */
  12
  13 /*
  14  * refstr.h
  15  *
  16  * Simple reference-counted strings
  17  */
  18
  19 #ifndef REFSTR_H
  20 #define REFSTR_H
  21
  22 #include <stddef.h>
  23 #include <stdarg.h>
  24
  25 static inline __attribute__ ((always_inline))
  26 const char *refstr_get(const char *r)
  27 {
  28     if (r)
  29         ((unsigned int *)r)[-1]++;
  30     return r;
  31 }
  32
  33 void refstr_put(const char *);
  34 char *refstr_alloc(size_t);
  35 const char *refstrdup(const char *);
  36 const char *refstrndup(const char *, size_t);
  37 int rsprintf(const char **, const char *, ...);
  38 int vrsprintf(const char **, const char *, va_list);
  39
  40 #endif