File: idna.h

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/* idna.h	Declarations for IDNA.
 * Copyright (C) 2002, 2003, 2004  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, see <http://www.gnu.org/licenses/>.
 */

#ifndef _IDNA_H
#define _IDNA_H

#ifdef __cplusplus
extern "C"
{
#endif

#include <stddef.h>		/* size_t */
#include <stdint.h>		/* uint32_t */

  /* 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

  /* Core functions */
  extern int idna_to_ascii_4i (const uint32_t * in, size_t inlen,
			       char *out, int flags);
  extern 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 int idna_to_ascii_4z (const uint32_t * input,
			       char **output, int flags);

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

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


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

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

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

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

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

#ifdef __cplusplus
}
#endif
#endif				/* _PUNYCODE_H */