usr/src/lib/libast/common/string/streval.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #pragma prototyped
  23 /*
  24  * obsolete streval() interface to strexpr()
  25  */
  26
  27 #include <ast.h>
  28
  29 typedef long (*Old_convert_t)(const char*, char**);
  30
  31 typedef long (*Convert_t)(const char*, char**, void*);
  32
  33 typedef struct
  34 {
  35         Old_convert_t   convert;
  36 } Handle_t;
  37
  38 static long
  39 userconv(const char* s, char** end, void* handle)
  40 {
  41         return((*((Handle_t*)handle)->convert)(s, end));
  42 }
  43
  44 long
  45 streval(const char* s, char** end, Old_convert_t convert)
  46 {
  47         Handle_t        handle;
  48
  49         return((handle.convert = convert) ? strexpr(s, end, userconv, &handle) : strexpr(s, end, (Convert_t)0, NiL));
  50 }