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
|
/* Character set conversion with error handling.
Copyright (C) 2001-2007, 2009-2016 Free Software Foundation, Inc.
Written by Bruno Haible and Simon Josefsson.
This program 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 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef _STRICONVEH_H
#define _STRICONVEH_H
#include <stddef.h>
#if HAVE_ICONV
#include <iconv.h>
#endif
#include "iconveh.h"
#ifdef __cplusplus
extern "C" {
#endif
#if HAVE_ICONV
/* A conversion descriptor for use by the iconveh functions. */
typedef struct
{
/* Conversion descriptor from FROM_CODESET to TO_CODESET, or (iconv_t)(-1)
if the system does not support a direct conversion from FROM_CODESET to
TO_CODESET. */
iconv_t cd;
/* Conversion descriptor from FROM_CODESET to UTF-8 (or (iconv_t)(-1) if
FROM_CODESET is UTF-8). */
iconv_t cd1;
/* Conversion descriptor from UTF-8 to TO_CODESET (or (iconv_t)(-1) if
TO_CODESET is UTF-8). */
iconv_t cd2;
}
iconveh_t;
/* Open a conversion descriptor for use by the iconveh functions.
If successful, fills *CDP and returns 0. Upon failure, return -1 with errno
set. */
extern int
iconveh_open (const char *to_codeset, const char *from_codeset,
iconveh_t *cdp);
/* Close a conversion descriptor created by iconveh_open().
Return value: 0 if successful, otherwise -1 and errno set. */
extern int
iconveh_close (const iconveh_t *cd);
/* Convert an entire string from one encoding to another, using iconv.
The original string is at [SRC,...,SRC+SRCLEN-1].
CD points to the conversion descriptor from FROMCODE to TOCODE, created by
the function iconveh_open().
If OFFSETS is not NULL, it should point to an array of SRCLEN integers; this
array is filled with offsets into the result, i.e. the character starting
at SRC[i] corresponds to the character starting at (*RESULTP)[OFFSETS[i]],
and other offsets are set to (size_t)(-1).
*RESULTP and *LENGTH should initially be a scratch buffer and its size,
or *RESULTP can initially be NULL.
May erase the contents of the memory at *RESULTP.
Return value: 0 if successful, otherwise -1 and errno set.
If successful: The resulting string is stored in *RESULTP and its length
in *LENGTHP. *RESULTP is set to a freshly allocated memory block, or is
unchanged if no dynamic memory allocation was necessary. */
extern int
mem_cd_iconveh (const char *src, size_t srclen,
const iconveh_t *cd,
enum iconv_ilseq_handler handler,
size_t *offsets,
char **resultp, size_t *lengthp);
/* Convert an entire string from one encoding to another, using iconv.
The original string is the NUL-terminated string starting at SRC.
CD points to the conversion descriptor from FROMCODE to TOCODE, created by
the function iconveh_open().
Both the "from" and the "to" encoding must use a single NUL byte at the end
of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
Allocate a malloced memory block for the result.
Return value: the freshly allocated resulting NUL-terminated string if
successful, otherwise NULL and errno set. */
extern char *
str_cd_iconveh (const char *src,
const iconveh_t *cd,
enum iconv_ilseq_handler handler);
#endif
/* Convert an entire string from one encoding to another, using iconv.
The original string is at [SRC,...,SRC+SRCLEN-1].
If OFFSETS is not NULL, it should point to an array of SRCLEN integers; this
array is filled with offsets into the result, i.e. the character starting
at SRC[i] corresponds to the character starting at (*RESULTP)[OFFSETS[i]],
and other offsets are set to (size_t)(-1).
*RESULTP and *LENGTH should initially be a scratch buffer and its size,
or *RESULTP can initially be NULL.
May erase the contents of the memory at *RESULTP.
Return value: 0 if successful, otherwise -1 and errno set.
If successful: The resulting string is stored in *RESULTP and its length
in *LENGTHP. *RESULTP is set to a freshly allocated memory block, or is
unchanged if no dynamic memory allocation was necessary. */
extern int
mem_iconveh (const char *src, size_t srclen,
const char *from_codeset, const char *to_codeset,
enum iconv_ilseq_handler handler,
size_t *offsets,
char **resultp, size_t *lengthp);
/* Convert an entire string from one encoding to another, using iconv.
The original string is the NUL-terminated string starting at SRC.
Both the "from" and the "to" encoding must use a single NUL byte at the
end of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
Allocate a malloced memory block for the result.
Return value: the freshly allocated resulting NUL-terminated string if
successful, otherwise NULL and errno set. */
extern char *
str_iconveh (const char *src,
const char *from_codeset, const char *to_codeset,
enum iconv_ilseq_handler handler);
#ifdef __cplusplus
}
#endif
#endif /* _STRICONVEH_H */
|
