✏ EDIT: pr29.h

/* pr29.h --- Detect strings which are non-idempotent under NFKC.
   Copyright (C) 2004-2016 Simon Josefsson

This file is part of GNU Libidn.

GNU Libidn is free software: you can redistribute it and/or
   modify it under the terms of either:

* the GNU Lesser General Public License as published by the Free
       Software Foundation; either version 3 of the License, or (at
       your option) any later version.

* the GNU General Public License as published by the Free
       Software Foundation; either version 2 of the License, or (at
       your option) any later version.

or both in parallel, as here.

GNU Libidn is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

You should have received copies of the GNU General Public License and
   the GNU Lesser General Public License along with this program.  If
   not, see <http://www.gnu.org/licenses/>. */

#ifndef PR29_H
# define PR29_H

# ifndef IDNAPI
#  if defined LIBIDN_BUILDING && defined HAVE_VISIBILITY && HAVE_VISIBILITY
#   define IDNAPI __attribute__((__visibility__("default")))
#  elif defined LIBIDN_BUILDING && defined _MSC_VER && ! defined LIBIDN_STATIC
#   define IDNAPI __declspec(dllexport)
#  elif defined _MSC_VER && ! defined LIBIDN_STATIC
#   define IDNAPI __declspec(dllimport)
#  else
#   define IDNAPI
#  endif
# endif

# ifdef __cplusplus
extern "C"
{
# endif

/* Get size_t. */
# include <stdlib.h>

/* Get uint32_t. */
# include <idn-int.h>

/* Error codes. */
  typedef enum
  {
    PR29_SUCCESS = 0,
    PR29_PROBLEM = 1,		/* String is a problem sequence. */
    PR29_STRINGPREP_ERROR = 2	/* Charset conversion failed (p29_8*). */
  } Pr29_rc;

extern IDNAPI const char *pr29_strerror (Pr29_rc rc);

extern IDNAPI int pr29_4 (const uint32_t * in, size_t len);
  extern IDNAPI int pr29_4z (const uint32_t * in);
  extern IDNAPI int pr29_8z (const char *in);

# ifdef __cplusplus
}
# endif
#endif				/* PR29_H */

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