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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/* Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _GCONV_H
#define _GCONV_H 1
#include <features.h>
#include <sys/types.h>
#include <regex.h>
__BEGIN_DECLS
/* 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_ILLEGAL_DESCRIPTOR,
GCONV_INTERNAL_ERROR
};
/* Structure for alias definition. Simply to strings. */
struct gconv_alias
{
__const char *fromname;
__const char *toname;
};
/* Default size of intermediate buffers. */
#define GCONV_DEFAULT_BUFSIZE 8160
/* Forward declarations. */
struct gconv_step;
struct gconv_step_data;
/* Type of a conversion function. */
typedef int (*gconv_fct) __P ((struct gconv_step *,
struct gconv_step_data *,
__const char *, size_t *, size_t *, int));
/* Constructor and destructor for local data for conversion step. */
typedef int (*gconv_init_fct) __P ((struct gconv_step *,
struct gconv_step_data *));
typedef void (*gconv_end_fct) __P ((struct gconv_step_data *));
/* Description of a conversion step. */
struct gconv_step
{
void *shlib_handle;
__const char *from_name;
__const char *to_name;
gconv_fct fct;
gconv_init_fct init_fct;
gconv_end_fct end_fct;
};
/* Additional data for steps in use of conversion descriptor. This is
allocated by the `init' function. */
struct gconv_step_data
{
char *outbuf; /* Output buffer for this step. */
size_t outbufavail; /* Bytes already available in output buffer. */
size_t outbufsize; /* Size of output buffer. */
int is_last;
void *data; /* Pointer to step-local data. */
};
/* Combine conversion step description with data. */
typedef struct gconv_info
{
size_t nsteps;
struct gconv_step *steps;
struct gconv_step_data *data;
} *gconv_t;
/* Description for an available conversion module. */
struct gconv_module
{
__const char *from_pattern;
__const char *from_constpfx;
size_t from_constpfx_len;
__const regex_t *from_regex;
__const char *to_string;
int cost;
__const char *module_name;
};
/* Global variables. */
/* Database of alias names. */
extern void *__gconv_alias_db;
/* Array with available modules. */
extern size_t __gconv_nmodules;
extern struct gconv_module **__gconv_modules_db;
/* Return in *HANDLE decriptor for transformation from FROMSET to TOSET. */
extern int __gconv_open __P ((__const char *__toset, __const char *__fromset,
gconv_t *__handle));
/* Free resources associated with transformation descriptor CD. */
extern int __gconv_close __P ((gconv_t cd));
/* Transform at most *INBYTESLEFT bytes from buffer starting at *INBUF
according to rules described by CD and place up to *OUTBYTESLEFT
bytes in buffer starting at *OUTBUF. Return number of written
characters in *CONVERTED if this pointer is not null. */
extern int __gconv __P ((gconv_t __cd,
__const char **__inbuf, size_t *__inbytesleft,
char **__outbuf, size_t *__outbytesleft,
size_t *__converted));
/* Return in *HANDLE a pointer to an array with *NSTEPS elements describing
the single steps necessary for transformation from FROMSET to TOSET. */
extern int __gconv_find_transform __P ((__const char *__toset,
__const char *__fromset,
struct gconv_step **__handle,
size_t *__nsteps));
/* Read all the configuration data and cache it. */
extern void __gconv_read_conf __P ((void));
/* Comparison function to search alias. */
extern int __gconv_alias_compare __P ((__const void *__p1,
__const void *__p2));
/* Clear reference to transformation step implementations which might
cause the code to be unloaded. */
extern int __gconv_close_transform __P ((struct gconv_step *__steps,
size_t __nsteps));
/* Find in the shared object associated with HANDLE for a function with
name NAME. Return function pointer or NULL. */
extern void *__gconv_find_func __P ((void *__handle, __const char *__name));
/* Load shared object named by NAME. If already loaded increment reference
count. */
extern void *__gconv_find_shlib __P ((__const char *__name));
/* Release shared object. If no further reference is available unload
the object. */
extern int __gconv_release_shlib __P ((void *__handle));
/* Fill STEP with information about builtin module with NAME. */
extern void __gconv_get_builtin_trans __P ((__const char *__name,
struct gconv_step *__step));
/* Builtin transformations. */
#ifdef _LIBC
# define __BUILTIN_TRANS(Name) \
extern int Name __P ((struct gconv_step *__step, \
struct gconv_step_data *__data, __const char *__inbuf,\
size_t *__inlen, size_t *__written, int __do_flush))
__BUILTIN_TRANS (__gconv_transform_dummy);
__BUILTIN_TRANS (__gconv_transform_ucs4_utf8);
__BUILTIN_TRANS (__gconv_transform_utf8_ucs4);
# undef __BUITLIN_TRANS
extern int __gconv_transform_init_rstate __P ((struct gconv_step *__step,
struct gconv_step_data *__data));
extern void __gconv_transform_end_rstate __P ((struct gconv_step_data *__data));
#endif
__END_DECLS
#endif /* gconv.h */
|
