lib/val2text.hc

   1 // $Id: val2text.hc 1544 2004-05-08 01:27:48Z ensc $    --*- c -*--
   2
   3 // Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
   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; version 2 of the License.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with this program; if not, write to the Free Software
  16 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18
  19 #ifdef HAVE_CONFIG_H
  20 #  include <config.h>
  21 #endif
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <strings.h>
  26
  27 #define VAL2TEXT(TYPE,SHORT)                                            \
  28   ssize_t                                                               \
  29   utilvserver_value2text_##SHORT(char const *str, size_t len,           \
  30                                  struct Mapping_ ##SHORT const *map,    \
  31                                  size_t map_len)                        \
  32   {                                                                     \
  33     size_t      i;                                                      \
  34     if (len==0) len=strlen(str);                                        \
  35                                                                         \
  36     for (i=0; i<map_len; ++i)                                           \
  37       if (len==map[i].len &&                                            \
  38           strncasecmp(map[i].id, str, len)==0)                          \
  39         return i;                                                       \
  40                                                                         \
  41     return -1;                                                          \
  42   }
  43
  44 #define TEXT2VAL(TYPE,SHORT)                                            \
  45   static ssize_t                                                        \
  46   searchValue(TYPE val,                                                 \
  47               struct Mapping_##SHORT const *map,  size_t map_len)       \
  48   {                                                                     \
  49     size_t              i;                                              \
  50     for (i=0; i<map_len; ++i)                                           \
  51       if (val == map[i].val) return i;                                  \
  52     return -1;                                                          \
  53   }                                                                     \
  54                                                                         \
  55   ssize_t                                                               \
  56   utilvserver_text2value_##SHORT(TYPE *val,                             \
  57                                  struct Mapping_##SHORT const *map,     \
  58                                  size_t map_len)                        \
  59   {                                                                     \
  60     ssize_t     idx;                                                    \
  61     TYPE        del_val;                                                \
  62     if (*val==0)                                                        \
  63       return -1;                                                        \
  64                                                                         \
  65     del_val = *val;                                                     \
  66     idx     = searchValue(del_val, map, map_len);                       \
  67                                                                         \
  68     if (idx==-1) {                                                      \
  69       size_t    i;                                                      \
  70       for (i=0; i<sizeof(*val)*8 && (*val&(1<<i))==0; ++i) {}           \
  71       del_val = (1<<i);                                                 \
  72       idx     = searchValue(del_val, map, map_len);                     \
  73     }                                                                   \
  74     *val &= ~del_val;                                                   \
  75     return idx;                                                         \
  76   }