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 */
24 extern @DLL_VARIABLE@ int _libiconv_version; /* Likewise */
26 /* We would like to #include any system header file which could define
27 iconv_t, 1. in order to eliminate the risk that the user gets compilation
28 errors because some other system header file includes /usr/include/iconv.h
29 which defines iconv_t or declares iconv after this file, 2. when compiling
30 for LIBICONV_PLUG, we need the proper iconv_t type in order to produce
31 binary compatible code.
32 But gcc's #include_next is not portable. Thus, once libiconv's iconv.h
33 has been installed in /usr/local/include, there is no way any more to
34 include the original /usr/include/iconv.h. We simply have to get away
36 Ad 1. The risk that a system header file does
37 #include "iconv.h" or #include_next "iconv.h"
38 is small. They all do #include <iconv.h>.
39 Ad 2. The iconv_t type is a pointer type in all cases I have seen. (It
40 has to be a scalar type because (iconv_t)(-1) is a possible return value
41 from iconv_open().) */
43 /* Define iconv_t ourselves. */
45 #define iconv_t libiconv_t
46 typedef void* iconv_t;
48 /* Get size_t declaration.
49 Get wchar_t declaration if it exists. */
52 /* Get errno declaration and values. */
54 /* Some systems, like SunOS 4, don't have EILSEQ. Some systems, like BSD/OS,
55 have EILSEQ in a different header. On these systems, define EILSEQ
58 #define EILSEQ @EILSEQ@
67 /* Allocates descriptor for code conversion from encoding ‘fromcode’ to
70 #define iconv_open libiconv_open
72 extern iconv_t iconv_open (const char* tocode, const char* fromcode);
74 /* Converts, using conversion descriptor ‘cd’, at most ‘*inbytesleft’ bytes
75 starting at ‘*inbuf’, writing at most ‘*outbytesleft’ bytes starting at
77 Decrements ‘*inbytesleft’ and increments ‘*inbuf’ by the same amount.
78 Decrements ‘*outbytesleft’ and increments ‘*outbuf’ by the same amount. */
80 #define iconv libiconv
82 extern size_t iconv (iconv_t cd, @ICONV_CONST@ char* * inbuf, size_t *inbytesleft, char* * outbuf, size_t *outbytesleft);
84 /* Frees resources allocated for conversion descriptor ‘cd’. */
86 #define iconv_close libiconv_close
88 extern int iconv_close (iconv_t cd);
98 /* Nonstandard extensions. */
102 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
104 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
105 included before <wchar.h>. */
117 /* A type that holds all memory needed by a conversion descriptor.
118 A pointer to such an object can be used as an iconv_t. */
124 } iconv_allocation_t;
126 /* Allocates descriptor for code conversion from encoding ‘fromcode’ to
127 encoding ‘tocode’ into preallocated memory. Returns an error indicator
128 (0 or -1 with errno set). */
129 #define iconv_open_into libiconv_open_into
130 extern int iconv_open_into (const char* tocode, const char* fromcode,
131 iconv_allocation_t* resultp);
133 /* Control of attributes. */
134 #define iconvctl libiconvctl
135 extern int iconvctl (iconv_t cd, int request, void* argument);
137 /* Hook performed after every successful conversion of a Unicode character. */
138 typedef void (*iconv_unicode_char_hook) (unsigned int uc, void* data);
139 /* Hook performed after every successful conversion of a wide character. */
140 typedef void (*iconv_wide_char_hook) (wchar_t wc, void* data);
143 iconv_unicode_char_hook uc_hook;
144 iconv_wide_char_hook wc_hook;
148 /* Fallback function. Invoked when a small number of bytes could not be
149 converted to a Unicode character. This function should process all
150 bytes from inbuf and may produce replacement Unicode characters by calling
151 the write_replacement callback repeatedly. */
152 typedef void (*iconv_unicode_mb_to_uc_fallback)
153 (const char* inbuf, size_t inbufsize,
154 void (*write_replacement) (const unsigned int *buf, size_t buflen,
158 /* Fallback function. Invoked when a Unicode character could not be converted
159 to the target encoding. This function should process the character and
160 may produce replacement bytes (in the target encoding) by calling the
161 write_replacement callback repeatedly. */
162 typedef void (*iconv_unicode_uc_to_mb_fallback)
164 void (*write_replacement) (const char *buf, size_t buflen,
169 /* Fallback function. Invoked when a number of bytes could not be converted to
170 a wide character. This function should process all bytes from inbuf and may
171 produce replacement wide characters by calling the write_replacement
172 callback repeatedly. */
173 typedef void (*iconv_wchar_mb_to_wc_fallback)
174 (const char* inbuf, size_t inbufsize,
175 void (*write_replacement) (const wchar_t *buf, size_t buflen,
179 /* Fallback function. Invoked when a wide character could not be converted to
180 the target encoding. This function should process the character and may
181 produce replacement bytes (in the target encoding) by calling the
182 write_replacement callback repeatedly. */
183 typedef void (*iconv_wchar_wc_to_mb_fallback)
185 void (*write_replacement) (const char *buf, size_t buflen,
190 /* If the wchar_t type does not exist, these two fallback functions are never
191 invoked. Their argument list therefore does not matter. */
192 typedef void (*iconv_wchar_mb_to_wc_fallback) ();
193 typedef void (*iconv_wchar_wc_to_mb_fallback) ();
195 /* Set of fallbacks. */
196 struct iconv_fallbacks {
197 iconv_unicode_mb_to_uc_fallback mb_to_uc_fallback;
198 iconv_unicode_uc_to_mb_fallback uc_to_mb_fallback;
199 iconv_wchar_mb_to_wc_fallback mb_to_wc_fallback;
200 iconv_wchar_wc_to_mb_fallback wc_to_mb_fallback;
204 /* Requests for iconvctl. */
205 #define ICONV_TRIVIALP 0 /* int *argument */
206 #define ICONV_GET_TRANSLITERATE 1 /* int *argument */
207 #define ICONV_SET_TRANSLITERATE 2 /* const int *argument */
208 #define ICONV_GET_DISCARD_ILSEQ 3 /* int *argument */
209 #define ICONV_SET_DISCARD_ILSEQ 4 /* const int *argument */
210 #define ICONV_SET_HOOKS 5 /* const struct iconv_hooks *argument */
211 #define ICONV_SET_FALLBACKS 6 /* const struct iconv_fallbacks *argument */
213 /* Listing of locale independent encodings. */
214 #define iconvlist libiconvlist
215 extern void iconvlist (int (*do_one) (unsigned int namescount,
216 const char * const * names,
220 /* Canonicalize an encoding name.
221 The result is either a canonical encoding name, or name itself. */
222 extern const char * iconv_canonicalize (const char * name);
224 /* Support for relocatable packages. */
226 /* Sets the original and the current installation prefix of the package.
227 Relocation simply replaces a pathname starting with the original prefix
228 by the corresponding pathname with the current prefix instead. Both
229 prefixes should be directory names without trailing slash (i.e. use ""
231 extern void libiconv_set_relocation_prefix (const char *orig_prefix,
232 const char *curr_prefix);
241 #endif /* _LIBICONV_H */