/* idna.h --- Declarations for Internationalized Domain Name in Applications.
 * Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008  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 the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with GNU Libidn; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 *
 */

#ifndef IDNA_H
# define IDNA_H

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

/* Libidn Windows DLL.  Only needed when this file is used in Visual
   Studio.  Export and import happens automatically in MinGW. */
# ifndef IDNA_API
#  if defined(_MSC_VER) && !defined(IDNA_STATIC)
#   ifdef IDNA_EXPORTS
#    define IDNA_API __declspec(dllexport)
#   else
#    define IDNA_API __declspec(dllimport)
#   endif
#  else
#   define IDNA_API
#  endif
# endif

# ifdef __cplusplus
extern "C"
{
# endif

  /* Error codes. */
  typedef enum
  {
    IDNA_SUCCESS = 0,
    IDNA_STRINGPREP_ERROR = 1,
    IDNA_PUNYCODE_ERROR = 2,
    IDNA_CONTAINS_NON_LDH = 3,
    /* Workaround typo in earlier versions. */
    IDNA_CONTAINS_LDH = IDNA_CONTAINS_NON_LDH,
    IDNA_CONTAINS_MINUS = 4,
    IDNA_INVALID_LENGTH = 5,
    IDNA_NO_ACE_PREFIX = 6,
    IDNA_ROUNDTRIP_VERIFY_ERROR = 7,
    IDNA_CONTAINS_ACE_PREFIX = 8,
    IDNA_ICONV_ERROR = 9,
    /* Internal errors. */
    IDNA_MALLOC_ERROR = 201,
    IDNA_DLOPEN_ERROR = 202
  } Idna_rc;

  /* IDNA flags */
  typedef enum
  {
    IDNA_ALLOW_UNASSIGNED = 0x0001,
    IDNA_USE_STD3_ASCII_RULES = 0x0002
  } Idna_flags;

# ifndef IDNA_ACE_PREFIX
#  define IDNA_ACE_PREFIX "xn--"
# endif

  extern IDNA_API const char *idna_strerror (Idna_rc rc);

  /* Core functions */
  extern IDNA_API int idna_to_ascii_4i (const uint32_t * in, size_t inlen,
					char *out, int flags);
  extern IDNA_API int idna_to_unicode_44i (const uint32_t * in, size_t inlen,
					   uint32_t * out, size_t * outlen,
					   int flags);

  /* Wrappers that handle several labels */

  extern IDNA_API int idna_to_ascii_4z (const uint32_t * input,
					char **output, int flags);

  extern IDNA_API int idna_to_ascii_8z (const char *input, char **output,
					int flags);

  extern IDNA_API int idna_to_ascii_lz (const char *input, char **output,
					int flags);

  extern IDNA_API int idna_to_unicode_4z4z (const uint32_t * input,
					    uint32_t ** output, int flags);

  extern IDNA_API int idna_to_unicode_8z4z (const char *input,
					    uint32_t ** output, int flags);

  extern IDNA_API int idna_to_unicode_8z8z (const char *input,
					    char **output, int flags);

  extern IDNA_API int idna_to_unicode_8zlz (const char *input,
					    char **output, int flags);

  extern IDNA_API int idna_to_unicode_lzlz (const char *input,
					    char **output, int flags);

# ifdef __cplusplus
}
# endif

#endif				/* IDNA_H */
