libidn/idna.h

   1 /* idna.h       Declarations for IDNA.
   2  * Copyright (C) 2002, 2003, 2004  Simon Josefsson
   3  *
   4  * This file is part of GNU Libidn.
   5  *
   6  * GNU Libidn is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * GNU Libidn is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with GNU Libidn; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef _IDNA_H
  21 #define _IDNA_H
  22
  23 #ifdef __cplusplus
  24 extern "C"
  25 {
  26 #endif
  27
  28 #include <stddef.h>             /* size_t */
  29 #include <stdint.h>             /* uint32_t */
  30
  31   /* Error codes. */
  32   typedef enum
  33   {
  34     IDNA_SUCCESS = 0,
  35     IDNA_STRINGPREP_ERROR = 1,
  36     IDNA_PUNYCODE_ERROR = 2,
  37     IDNA_CONTAINS_NON_LDH = 3,
  38     /* Workaround typo in earlier versions. */
  39     IDNA_CONTAINS_LDH = IDNA_CONTAINS_NON_LDH,
  40     IDNA_CONTAINS_MINUS = 4,
  41     IDNA_INVALID_LENGTH = 5,
  42     IDNA_NO_ACE_PREFIX = 6,
  43     IDNA_ROUNDTRIP_VERIFY_ERROR = 7,
  44     IDNA_CONTAINS_ACE_PREFIX = 8,
  45     IDNA_ICONV_ERROR = 9,
  46     /* Internal errors. */
  47     IDNA_MALLOC_ERROR = 201,
  48     IDNA_DLOPEN_ERROR = 202
  49   } Idna_rc;
  50
  51   /* IDNA flags */
  52   typedef enum
  53   {
  54     IDNA_ALLOW_UNASSIGNED = 0x0001,
  55     IDNA_USE_STD3_ASCII_RULES = 0x0002
  56   } Idna_flags;
  57
  58 #ifndef IDNA_ACE_PREFIX
  59 #define IDNA_ACE_PREFIX "xn--"
  60 #endif
  61
  62   /* Core functions */
  63   extern int idna_to_ascii_4i (const uint32_t * in, size_t inlen,
  64                                char *out, int flags);
  65   extern int idna_to_unicode_44i (const uint32_t * in, size_t inlen,
  66                                   uint32_t * out, size_t * outlen, int flags);
  67
  68   /* Wrappers that handle several labels */
  69
  70   extern int idna_to_ascii_4z (const uint32_t * input,
  71                                char **output, int flags);
  72
  73   extern int idna_to_ascii_8z (const char *input, char **output, int flags);
  74
  75   extern int idna_to_ascii_lz (const char *input, char **output, int flags);
  76
  77
  78   extern int idna_to_unicode_4z4z (const uint32_t * input,
  79                                    uint32_t ** output, int flags);
  80
  81   extern int idna_to_unicode_8z4z (const char *input,
  82                                    uint32_t ** output, int flags);
  83
  84   extern int idna_to_unicode_8z8z (const char *input,
  85                                    char **output, int flags);
  86
  87   extern int idna_to_unicode_8zlz (const char *input,
  88                                    char **output, int flags);
  89
  90   extern int idna_to_unicode_lzlz (const char *input,
  91                                    char **output, int flags);
  92
  93 #ifdef __cplusplus
  94 }
  95 #endif
  96 #endif                          /* _PUNYCODE_H */