1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library 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.
The GNU C Library 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 the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* This header provides no interface for a user to the internals of
the gconv implementation in the libc. Therefore there is no use
for these definitions beside for writing additional gconv modules. */
#ifndef _GCONV_H
#define _GCONV_H 1
#include <features.h>
#define __need_mbstate_t
#include <wchar.h>
#define __need_size_t
#include <stddef.h>
/* ISO 10646 value used to signal invalid value. */
#define __UNKNOWN_10646_CHAR ((wchar_t) 0xfffd)
/* Error codes for gconv functions. */
enum
{
__GCONV_OK = 0,
__GCONV_NOCONV,
__GCONV_NODB,
__GCONV_NOMEM,
__GCONV_EMPTY_INPUT,
__GCONV_FULL_OUTPUT,
__GCONV_ILLEGAL_INPUT,
__GCONV_INCOMPLETE_INPUT,
__GCONV_ILLEGAL_DESCRIPTOR,
__GCONV_INTERNAL_ERROR
};
/* Flags the `__gconv_open' function can set. */
enum
{
__GCONV_IS_LAST = 0x0001,
__GCONV_IGNORE_ERRORS = 0x0002
};
/* Forward declarations. */
struct __gconv_step;
struct __gconv_step_data;
struct __gconv_loaded_object;
struct __gconv_trans_data;
/* Type of a conversion function. */
typedef int (*__gconv_fct) (struct __gconv_step *, struct __gconv_step_data *,
__const unsigned char **, __const unsigned char *,
unsigned char **, size_t *, int, int);
/* Constructor and destructor for local data for conversion step. */
typedef int (*__gconv_init_fct) (struct __gconv_step *);
typedef void (*__gconv_end_fct) (struct __gconv_step *);
/* Type of a transliteration/transscription function. */
typedef int (*__gconv_trans_fct) (struct __gconv_step *,
struct __gconv_step_data *, void *,
__const unsigned char *,
__const unsigned char **,
__const unsigned char *, unsigned char **,
size_t *);
/* Function to call to provide transliteration module with context. */
typedef int (*__gconv_trans_context_fct) (void *, __const unsigned char *,
__const unsigned char *,
unsigned char *, unsigned char *);
/* Function to query module about supported encoded character sets. */
typedef int (*__gconv_trans_query_fct) (__const char *, __const char ***,
size_t *);
/* Constructor and destructor for local data for transliteration. */
typedef int (*__gconv_trans_init_fct) (void **, const char *);
typedef void (*__gconv_trans_end_fct) (void *);
struct __gconv_trans_data
{
/* Transliteration/Transscription function. */
__gconv_trans_fct __trans_fct;
__gconv_trans_context_fct __trans_context_fct;
__gconv_trans_end_fct __trans_end_fct;
void *__data;
struct __gconv_trans_data *__next;
};
/* Description of a conversion step. */
struct __gconv_step
{
struct __gconv_loaded_object *__shlib_handle;
__const char *__modname;
int __counter;
char *__from_name;
char *__to_name;
__gconv_fct __fct;
__gconv_init_fct __init_fct;
__gconv_end_fct __end_fct;
/* Information about the number of bytes needed or produced in this
step. This helps optimizing the buffer sizes. */
int __min_needed_from;
int __max_needed_from;
int __min_needed_to;
int __max_needed_to;
/* Flag whether this is a stateful encoding or not. */
int __stateful;
void *__data; /* Pointer to step-local data. */
};
/* Additional data for steps in use of conversion descriptor. This is
allocated by the `init' function. */
struct __gconv_step_data
{
unsigned char *__outbuf; /* Output buffer for this step. */
unsigned char *__outbufend; /* Address of first byte after the output
buffer. */
/* Is this the last module in the chain. */
int __flags;
/* Counter for number of invocations of the module function for this
descriptor. */
int __invocation_counter;
/* Flag whether this is an internal use of the module (in the mb*towc*
and wc*tomb* functions) or regular with iconv(3). */
int __internal_use;
__mbstate_t *__statep;
__mbstate_t __state; /* This element must not be used directly by
any module; always use STATEP! */
/* Transliteration information. */
struct __gconv_trans_data *__trans;
};
/* Combine conversion step description with data. */
typedef struct __gconv_info
{
size_t __nsteps;
struct __gconv_step *__steps;
__extension__ struct __gconv_step_data __data __flexarr;
} *__gconv_t;
#endif /* gconv.h */
|
GitWeb