root/maint/gnulib/lib/uninorm/u-normcmp.h

/* */

INCLUDED FROM

DEFINITIONS

1. FUNC

   1 /* Normalization insensitive comparison of Unicode strings.
   2    Copyright (C) 2009-2021 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2009.
   4 
   5    This file is free software.
   6    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
   7    You can redistribute it and/or modify it under either
   8      - the terms of the GNU Lesser General Public License as published
   9        by the Free Software Foundation; either version 3, or (at your
  10        option) any later version, or
  11      - the terms of the GNU General Public License as published by the
  12        Free Software Foundation; either version 2, or (at your option)
  13        any later version, or
  14      - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
  15 
  16    This file is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19    Lesser General Public License and the GNU General Public License
  20    for more details.
  21 
  22    You should have received a copy of the GNU Lesser General Public
  23    License and of the GNU General Public License along with this
  24    program.  If not, see <https://www.gnu.org/licenses/>.  */
  25 
  26 int
  27 FUNC (const UNIT *s1, size_t n1, const UNIT *s2, size_t n2,
     /*  */
  28       uninorm_t nf, int *resultp)
  29 {
  30   UNIT buf1[2048 / sizeof (UNIT)];
  31   UNIT buf2[2048 / sizeof (UNIT)];
  32   UNIT *norms1;
  33   size_t norms1_length;
  34   UNIT *norms2;
  35   size_t norms2_length;
  36   int cmp;
  37 
  38   /* Normalize S1.  */
  39   norms1_length = sizeof (buf1) / sizeof (UNIT);
  40   norms1 = U_NORMALIZE (nf, s1, n1, buf1, &norms1_length);
  41   if (norms1 == NULL)
  42     /* errno is set here.  */
  43     return -1;
  44 
  45   /* Normalize S2.  */
  46   norms2_length = sizeof (buf2) / sizeof (UNIT);
  47   norms2 = U_NORMALIZE (nf, s2, n2, buf2, &norms2_length);
  48   if (norms2 == NULL)
  49     {
  50       if (norms1 != buf1)
  51         {
  52           int saved_errno = errno;
  53           free (norms1);
  54           errno = saved_errno;
  55         }
  56       return -1;
  57     }
  58 
  59   /* Compare the normalized strings.  */
  60   cmp = U_CMP2 (norms1, norms1_length, norms2, norms2_length);
  61   if (cmp > 0)
  62     cmp = 1;
  63   else if (cmp < 0)
  64     cmp = -1;
  65 
  66   if (norms2 != buf2)
  67     free (norms2);
  68   if (norms1 != buf1)
  69     free (norms1);
  70   *resultp = cmp;
  71   return 0;
  72 }

/* */