source: win32/libiconv-1.13/include/iconv.h @ 215

Last change on this file since 215 was 191, checked in by tim, 15 years ago

updated scons build scripts to handle MinGW
added binaries for MinGW build dependencies
File size: 9.0 KB
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1/* Copyright (C) 1999-2003, 2005-2006, 2008-2009 Free Software Foundation, Inc.
2   This file is part of the GNU LIBICONV Library.
3
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.
8
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.
13
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, write to the Free Software Foundation, Inc., 51 Franklin Street,
17   Fifth Floor, Boston, MA 02110-1301, USA.  */
18
19/* When installed, this file is called "iconv.h". */
20
21#ifndef _LIBICONV_H
22#define _LIBICONV_H
23
24#define _LIBICONV_VERSION 0x010D    /* version number: (major<<8) + minor */
25extern __declspec (dllimport) int _libiconv_version; /* Likewise */
26
27/* We would like to #include any system header file which could define
28   iconv_t, 1. in order to eliminate the risk that the user gets compilation
29   errors because some other system header file includes /usr/include/iconv.h
30   which defines iconv_t or declares iconv after this file, 2. when compiling
31   for LIBICONV_PLUG, we need the proper iconv_t type in order to produce
32   binary compatible code.
33   But gcc's #include_next is not portable. Thus, once libiconv's iconv.h
34   has been installed in /usr/local/include, there is no way any more to
35   include the original /usr/include/iconv.h. We simply have to get away
36   without it.
37   Ad 1. The risk that a system header file does
38   #include "iconv.h"  or  #include_next "iconv.h"
39   is small. They all do #include <iconv.h>.
40   Ad 2. The iconv_t type is a pointer type in all cases I have seen. (It
41   has to be a scalar type because (iconv_t)(-1) is a possible return value
42   from iconv_open().) */
43
44/* Define iconv_t ourselves. */
45#undef iconv_t
46#define iconv_t libiconv_t
47typedef void* iconv_t;
48
49/* Get size_t declaration.
50   Get wchar_t declaration if it exists. */
51#include <stddef.h>
52
53/* Get errno declaration and values. */
54#include <errno.h>
55/* Some systems, like SunOS 4, don't have EILSEQ. Some systems, like BSD/OS,
56   have EILSEQ in a different header.  On these systems, define EILSEQ
57   ourselves. */
58#ifndef EILSEQ
59#define EILSEQ
60#endif
61
62
63#ifdef __cplusplus
64extern "C" {
65#endif
66
67
68/* Allocates descriptor for code conversion from encoding ‘fromcode’ to
69   encoding ‘tocode’. */
70#ifndef LIBICONV_PLUG
71#define iconv_open libiconv_open
72#endif
73extern iconv_t iconv_open (const char* tocode, const char* fromcode);
74
75/* Converts, using conversion descriptor ‘cd’, at most ‘*inbytesleft’ bytes
76   starting at ‘*inbuf’, writing at most ‘*outbytesleft’ bytes starting at
77   ‘*outbuf’.
78   Decrements ‘*inbytesleft’ and increments ‘*inbuf’ by the same amount.
79   Decrements ‘*outbytesleft’ and increments ‘*outbuf’ by the same amount. */
80#ifndef LIBICONV_PLUG
81#define iconv libiconv
82#endif
83extern size_t iconv (iconv_t cd, const char* * inbuf, size_t *inbytesleft, char* * outbuf, size_t *outbytesleft);
84
85/* Frees resources allocated for conversion descriptor ‘cd’. */
86#ifndef LIBICONV_PLUG
87#define iconv_close libiconv_close
88#endif
89extern int iconv_close (iconv_t cd);
90
91
92#ifndef LIBICONV_PLUG
93
94/* Nonstandard extensions. */
95
96#if 1
97#if 0
98/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
99   <wchar.h>.
100   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
101   included before <wchar.h>.  */
102#include <stddef.h>
103#include <stdio.h>
104#include <time.h>
105#endif
106#include <wchar.h>
107#endif
108
109/* A type that holds all memory needed by a conversion descriptor.
110   A pointer to such an object can be used as an iconv_t. */
111typedef struct {
112  void* dummy1[28];
113#if 1
114  mbstate_t dummy2;
115#endif
116} iconv_allocation_t;
117
118/* Allocates descriptor for code conversion from encoding ‘fromcode’ to
119   encoding ‘tocode’ into preallocated memory. Returns an error indicator
120   (0 or -1 with errno set). */
121#define iconv_open_into libiconv_open_into
122extern int iconv_open_into (const char* tocode, const char* fromcode,
123                            iconv_allocation_t* resultp);
124
125/* Control of attributes. */
126#define iconvctl libiconvctl
127extern int iconvctl (iconv_t cd, int request, void* argument);
128
129/* Hook performed after every successful conversion of a Unicode character. */
130typedef void (*iconv_unicode_char_hook) (unsigned int uc, void* data);
131/* Hook performed after every successful conversion of a wide character. */
132typedef void (*iconv_wide_char_hook) (wchar_t wc, void* data);
133/* Set of hooks. */
134struct iconv_hooks {
135  iconv_unicode_char_hook uc_hook;
136  iconv_wide_char_hook wc_hook;
137  void* data;
138};
139
140/* Fallback function.  Invoked when a small number of bytes could not be
141   converted to a Unicode character.  This function should process all
142   bytes from inbuf and may produce replacement Unicode characters by calling
143   the write_replacement callback repeatedly.  */
144typedef void (*iconv_unicode_mb_to_uc_fallback)
145             (const char* inbuf, size_t inbufsize,
146              void (*write_replacement) (const unsigned int *buf, size_t buflen,
147                                         void* callback_arg),
148              void* callback_arg,
149              void* data);
150/* Fallback function.  Invoked when a Unicode character could not be converted
151   to the target encoding.  This function should process the character and
152   may produce replacement bytes (in the target encoding) by calling the
153   write_replacement callback repeatedly.  */
154typedef void (*iconv_unicode_uc_to_mb_fallback)
155             (unsigned int code,
156              void (*write_replacement) (const char *buf, size_t buflen,
157                                         void* callback_arg),
158              void* callback_arg,
159              void* data);
160#if 1
161/* Fallback function.  Invoked when a number of bytes could not be converted to
162   a wide character.  This function should process all bytes from inbuf and may
163   produce replacement wide characters by calling the write_replacement
164   callback repeatedly.  */
165typedef void (*iconv_wchar_mb_to_wc_fallback)
166             (const char* inbuf, size_t inbufsize,
167              void (*write_replacement) (const wchar_t *buf, size_t buflen,
168                                         void* callback_arg),
169              void* callback_arg,
170              void* data);
171/* Fallback function.  Invoked when a wide character could not be converted to
172   the target encoding.  This function should process the character and may
173   produce replacement bytes (in the target encoding) by calling the
174   write_replacement callback repeatedly.  */
175typedef void (*iconv_wchar_wc_to_mb_fallback)
176             (wchar_t code,
177              void (*write_replacement) (const char *buf, size_t buflen,
178                                         void* callback_arg),
179              void* callback_arg,
180              void* data);
181#else
182/* If the wchar_t type does not exist, these two fallback functions are never
183   invoked.  Their argument list therefore does not matter.  */
184typedef void (*iconv_wchar_mb_to_wc_fallback) ();
185typedef void (*iconv_wchar_wc_to_mb_fallback) ();
186#endif
187/* Set of fallbacks. */
188struct iconv_fallbacks {
189  iconv_unicode_mb_to_uc_fallback mb_to_uc_fallback;
190  iconv_unicode_uc_to_mb_fallback uc_to_mb_fallback;
191  iconv_wchar_mb_to_wc_fallback mb_to_wc_fallback;
192  iconv_wchar_wc_to_mb_fallback wc_to_mb_fallback;
193  void* data;
194};
195
196/* Requests for iconvctl. */
197#define ICONV_TRIVIALP            0  /* int *argument */
198#define ICONV_GET_TRANSLITERATE   1  /* int *argument */
199#define ICONV_SET_TRANSLITERATE   2  /* const int *argument */
200#define ICONV_GET_DISCARD_ILSEQ   3  /* int *argument */
201#define ICONV_SET_DISCARD_ILSEQ   4  /* const int *argument */
202#define ICONV_SET_HOOKS           5  /* const struct iconv_hooks *argument */
203#define ICONV_SET_FALLBACKS       6  /* const struct iconv_fallbacks *argument */
204
205/* Listing of locale independent encodings. */
206#define iconvlist libiconvlist
207extern void iconvlist (int (*do_one) (unsigned int namescount,
208                                      const char * const * names,
209                                      void* data),
210                       void* data);
211
212/* Canonicalize an encoding name.
213   The result is either a canonical encoding name, or name itself. */
214extern const char * iconv_canonicalize (const char * name);
215
216/* Support for relocatable packages.  */
217
218/* Sets the original and the current installation prefix of the package.
219   Relocation simply replaces a pathname starting with the original prefix
220   by the corresponding pathname with the current prefix instead.  Both
221   prefixes should be directory names without trailing slash (i.e. use ""
222   instead of "/").  */
223extern void libiconv_set_relocation_prefix (const char *orig_prefix,
224                                            const char *curr_prefix);
225
226#endif
227
228
229#ifdef __cplusplus
230}
231#endif
232
233
234#endif /* _LIBICONV_H */
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