1 /* Copyright (C) 1999-2003, 2005-2006, 2008-2011 Free Software Foundation, Inc.
2 This file is part of the GNU LIBICONV Library.
4 The GNU LIBICONV Library is free software; you can redistribute it
5 and/or modify it under the terms of the GNU Library General Public
6 License as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 The GNU LIBICONV Library is distributed in the hope that it will be
10 useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU LIBICONV Library; see the file COPYING.LIB.
16 If not, see <http://www.gnu.org/licenses/>. */
18 /* When installed, this file is called "iconv.h". */
23 #define _LIBICONV_VERSION 0x010F /* version number: (major<<8) + minor */
25 #if @HAVE_VISIBILITY@ && BUILDING_LIBICONV
26 #define LIBICONV_DLL_EXPORTED __attribute__((__visibility__("default")))
28 #define LIBICONV_DLL_EXPORTED
30 extern LIBICONV_DLL_EXPORTED @DLL_VARIABLE@ int _libiconv_version; /* Likewise */
32 /* We would like to #include any system header file which could define
33 iconv_t, 1. in order to eliminate the risk that the user gets compilation
34 errors because some other system header file includes /usr/include/iconv.h
35 which defines iconv_t or declares iconv after this file, 2. when compiling
36 for LIBICONV_PLUG, we need the proper iconv_t type in order to produce
37 binary compatible code.
38 But gcc's #include_next is not portable. Thus, once libiconv's iconv.h
39 has been installed in /usr/local/include, there is no way any more to
40 include the original /usr/include/iconv.h. We simply have to get away
42 Ad 1. The risk that a system header file does
43 #include "iconv.h" or #include_next "iconv.h"
44 is small. They all do #include <iconv.h>.
45 Ad 2. The iconv_t type is a pointer type in all cases I have seen. (It
46 has to be a scalar type because (iconv_t)(-1) is a possible return value
47 from iconv_open().) */
49 /* Define iconv_t ourselves. */
51 #define iconv_t libiconv_t
52 typedef void* iconv_t;
54 /* Get size_t declaration.
55 Get wchar_t declaration if it exists. */
58 /* Get errno declaration and values. */
60 /* Some systems, like SunOS 4, don't have EILSEQ. Some systems, like BSD/OS,
61 have EILSEQ in a different header. On these systems, define EILSEQ
64 #define EILSEQ @EILSEQ@
73 /* Allocates descriptor for code conversion from encoding ‘fromcode’ to
76 #define iconv_open libiconv_open
78 extern LIBICONV_DLL_EXPORTED iconv_t iconv_open (const char* tocode, const char* fromcode);
80 /* Converts, using conversion descriptor ‘cd’, at most ‘*inbytesleft’ bytes
81 starting at ‘*inbuf’, writing at most ‘*outbytesleft’ bytes starting at
83 Decrements ‘*inbytesleft’ and increments ‘*inbuf’ by the same amount.
84 Decrements ‘*outbytesleft’ and increments ‘*outbuf’ by the same amount. */
86 #define iconv libiconv
88 extern LIBICONV_DLL_EXPORTED size_t iconv (iconv_t cd, @ICONV_CONST@ char* * inbuf, size_t *inbytesleft, char* * outbuf, size_t *outbytesleft);
90 /* Frees resources allocated for conversion descriptor ‘cd’. */
92 #define iconv_close libiconv_close
94 extern LIBICONV_DLL_EXPORTED int iconv_close (iconv_t cd);
102 #ifndef LIBICONV_PLUG
104 /* Nonstandard extensions. */
108 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
110 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
111 included before <wchar.h>. */
123 /* A type that holds all memory needed by a conversion descriptor.
124 A pointer to such an object can be used as an iconv_t. */
130 } iconv_allocation_t;
132 /* Allocates descriptor for code conversion from encoding ‘fromcode’ to
133 encoding ‘tocode’ into preallocated memory. Returns an error indicator
134 (0 or -1 with errno set). */
135 #define iconv_open_into libiconv_open_into
136 extern LIBICONV_DLL_EXPORTED int iconv_open_into (const char* tocode, const char* fromcode,
137 iconv_allocation_t* resultp);
139 /* Control of attributes. */
140 #define iconvctl libiconvctl
141 extern LIBICONV_DLL_EXPORTED int iconvctl (iconv_t cd, int request, void* argument);
143 /* Hook performed after every successful conversion of a Unicode character. */
144 typedef void (*iconv_unicode_char_hook) (unsigned int uc, void* data);
145 /* Hook performed after every successful conversion of a wide character. */
146 typedef void (*iconv_wide_char_hook) (wchar_t wc, void* data);
149 iconv_unicode_char_hook uc_hook;
150 iconv_wide_char_hook wc_hook;
154 /* Fallback function. Invoked when a small number of bytes could not be
155 converted to a Unicode character. This function should process all
156 bytes from inbuf and may produce replacement Unicode characters by calling
157 the write_replacement callback repeatedly. */
158 typedef void (*iconv_unicode_mb_to_uc_fallback)
159 (const char* inbuf, size_t inbufsize,
160 void (*write_replacement) (const unsigned int *buf, size_t buflen,
164 /* Fallback function. Invoked when a Unicode character could not be converted
165 to the target encoding. This function should process the character and
166 may produce replacement bytes (in the target encoding) by calling the
167 write_replacement callback repeatedly. */
168 typedef void (*iconv_unicode_uc_to_mb_fallback)
170 void (*write_replacement) (const char *buf, size_t buflen,
175 /* Fallback function. Invoked when a number of bytes could not be converted to
176 a wide character. This function should process all bytes from inbuf and may
177 produce replacement wide characters by calling the write_replacement
178 callback repeatedly. */
179 typedef void (*iconv_wchar_mb_to_wc_fallback)
180 (const char* inbuf, size_t inbufsize,
181 void (*write_replacement) (const wchar_t *buf, size_t buflen,
185 /* Fallback function. Invoked when a wide character could not be converted to
186 the target encoding. This function should process the character and may
187 produce replacement bytes (in the target encoding) by calling the
188 write_replacement callback repeatedly. */
189 typedef void (*iconv_wchar_wc_to_mb_fallback)
191 void (*write_replacement) (const char *buf, size_t buflen,
196 /* If the wchar_t type does not exist, these two fallback functions are never
197 invoked. Their argument list therefore does not matter. */
198 typedef void (*iconv_wchar_mb_to_wc_fallback) ();
199 typedef void (*iconv_wchar_wc_to_mb_fallback) ();
201 /* Set of fallbacks. */
202 struct iconv_fallbacks {
203 iconv_unicode_mb_to_uc_fallback mb_to_uc_fallback;
204 iconv_unicode_uc_to_mb_fallback uc_to_mb_fallback;
205 iconv_wchar_mb_to_wc_fallback mb_to_wc_fallback;
206 iconv_wchar_wc_to_mb_fallback wc_to_mb_fallback;
210 /* Requests for iconvctl. */
211 #define ICONV_TRIVIALP 0 /* int *argument */
212 #define ICONV_GET_TRANSLITERATE 1 /* int *argument */
213 #define ICONV_SET_TRANSLITERATE 2 /* const int *argument */
214 #define ICONV_GET_DISCARD_ILSEQ 3 /* int *argument */
215 #define ICONV_SET_DISCARD_ILSEQ 4 /* const int *argument */
216 #define ICONV_SET_HOOKS 5 /* const struct iconv_hooks *argument */
217 #define ICONV_SET_FALLBACKS 6 /* const struct iconv_fallbacks *argument */
219 /* Listing of locale independent encodings. */
220 #define iconvlist libiconvlist
221 extern LIBICONV_DLL_EXPORTED void iconvlist (int (*do_one) (unsigned int namescount,
222 const char * const * names,
226 /* Canonicalize an encoding name.
227 The result is either a canonical encoding name, or name itself. */
228 extern LIBICONV_DLL_EXPORTED const char * iconv_canonicalize (const char * name);
230 /* Support for relocatable packages. */
232 /* Sets the original and the current installation prefix of the package.
233 Relocation simply replaces a pathname starting with the original prefix
234 by the corresponding pathname with the current prefix instead. Both
235 prefixes should be directory names without trailing slash (i.e. use ""
237 extern LIBICONV_DLL_EXPORTED void libiconv_set_relocation_prefix (const char *orig_prefix,
238 const char *curr_prefix);
247 #endif /* _LIBICONV_H */