/usr/include/gconv.h is in libc6-dev 2.27-3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /* Copyright (C) 1997-2018 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, see
<http://www.gnu.org/licenses/>. */
/* 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>
#include <bits/types/__mbstate_t.h>
#include <bits/types/wint_t.h>
#define __need_size_t
#define __need_wchar_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,
__GCONV_SWAP = 0x0004,
__GCONV_TRANSLIT = 0x0008
};
/* Forward declarations. */
struct __gconv_step;
struct __gconv_step_data;
struct __gconv_loaded_object;
/* 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);
/* Type of a specialized conversion function for a single byte to INTERNAL. */
typedef wint_t (*__gconv_btowc_fct) (struct __gconv_step *, unsigned char);
/* 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 *);
/* 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_btowc_fct __btowc_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! */
};
/* Combine conversion step description with data. */
typedef struct __gconv_info
{
size_t __nsteps;
struct __gconv_step *__steps;
__extension__ struct __gconv_step_data __data[0];
} *__gconv_t;
/* Transliteration using the locale's data. */
extern int __gconv_transliterate (struct __gconv_step *step,
struct __gconv_step_data *step_data,
const unsigned char *inbufstart,
const unsigned char **inbufp,
const unsigned char *inbufend,
unsigned char **outbufstart,
size_t *irreversible);
#endif /* gconv.h */
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