libs/unicode/unicode_htmlent.c

   1 /*
   2 ** Copyright 2011 Double Precision, Inc.
   3 ** See COPYING for distribution information.
   4 **
   5 */
   6
   7 #include        "unicode_config.h"
   8 #include        "unicode.h"
   9
  10 #include <stdlib.h>
  11
  12 struct i {
  13         size_t n_start;
  14         size_t n_size;
  15         unicode_char v;
  16 };
  17
  18 #include "unicode_htmlent.h"
  19
  20
  21 static int compar(const void *key, const void *obj)
  22 {
  23         size_t j;
  24         const char *p=n + ((const struct i *)obj)->n_start;
  25         const char *ckey=(const char *)key;
  26
  27         for (j=0; j<((const struct i *)obj)->n_size; ++j)
  28         {
  29                 if (*ckey < *p)
  30                         return -1;
  31
  32                 if (*ckey > *p)
  33                         return 1;
  34
  35                 ++p;
  36                 ++ckey;
  37         }
  38
  39         if (*ckey)
  40                 return 1;
  41
  42         return 0;
  43 }
  44
  45 unicode_char unicode_html40ent_lookup(const char *n)
  46 {
  47         const struct i *ptr=
  48                 (const struct i *)bsearch(n, ii,
  49                                           sizeof(ii)/sizeof(ii[0]),
  50                                           sizeof(ii[0]), compar);
  51
  52         if (ptr)
  53                 return ptr->v;
  54         return 0;
  55 }