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
|
/* Copyright (C) 1995-2013 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/>. */
#include "libioP.h"
#include "strfile.h"
#include <stdio.h>
#include <stdlib.h>
#include <wchar.h>
struct _IO_FILE_wmemstream
{
_IO_strfile _sf;
wchar_t **bufloc;
_IO_size_t *sizeloc;
};
static int _IO_wmem_sync (_IO_FILE* fp) __THROW;
static void _IO_wmem_finish (_IO_FILE* fp, int) __THROW;
static const struct _IO_jump_t _IO_wmem_jumps =
{
JUMP_INIT_DUMMY,
JUMP_INIT (finish, _IO_wmem_finish),
JUMP_INIT (overflow, (_IO_overflow_t) _IO_wstr_overflow),
JUMP_INIT (underflow, (_IO_underflow_t) _IO_wstr_underflow),
JUMP_INIT (uflow, (_IO_underflow_t) _IO_wdefault_uflow),
JUMP_INIT (pbackfail, (_IO_pbackfail_t) _IO_wstr_pbackfail),
JUMP_INIT (xsputn, _IO_wdefault_xsputn),
JUMP_INIT (xsgetn, _IO_wdefault_xsgetn),
JUMP_INIT (seekoff, _IO_wstr_seekoff),
JUMP_INIT (seekpos, _IO_default_seekpos),
JUMP_INIT (setbuf, _IO_default_setbuf),
JUMP_INIT (sync, _IO_wmem_sync),
JUMP_INIT (doallocate, _IO_wdefault_doallocate),
JUMP_INIT (read, _IO_default_read),
JUMP_INIT (write, _IO_default_write),
JUMP_INIT (seek, _IO_default_seek),
JUMP_INIT (close, _IO_default_close),
JUMP_INIT (stat, _IO_default_stat),
JUMP_INIT (showmanyc, _IO_default_showmanyc),
JUMP_INIT (imbue, _IO_default_imbue)
};
/* Open a stream that writes into a malloc'd buffer that is expanded as
necessary. *BUFLOC and *SIZELOC are updated with the buffer's location
and the number of characters written on fflush or fclose. */
_IO_FILE *
open_wmemstream (bufloc, sizeloc)
wchar_t **bufloc;
_IO_size_t *sizeloc;
{
struct locked_FILE
{
struct _IO_FILE_wmemstream fp;
#ifdef _IO_MTSAFE_IO
_IO_lock_t lock;
#endif
struct _IO_wide_data wd;
} *new_f;
wchar_t *buf;
new_f = (struct locked_FILE *) malloc (sizeof (struct locked_FILE));
if (new_f == NULL)
return NULL;
#ifdef _IO_MTSAFE_IO
new_f->fp._sf._sbf._f._lock = &new_f->lock;
#endif
buf = calloc (1, _IO_BUFSIZ);
if (buf == NULL)
return NULL;
_IO_no_init (&new_f->fp._sf._sbf._f, 0, 0, &new_f->wd, &_IO_wmem_jumps);
_IO_fwide (&new_f->fp._sf._sbf._f, 1);
_IO_wstr_init_static (&new_f->fp._sf._sbf._f, buf,
_IO_BUFSIZ / sizeof (wchar_t), buf);
new_f->fp._sf._sbf._f._flags2 &= ~_IO_FLAGS2_USER_WBUF;
new_f->fp._sf._s._allocate_buffer = (_IO_alloc_type) malloc;
new_f->fp._sf._s._free_buffer = (_IO_free_type) free;
new_f->fp.bufloc = bufloc;
new_f->fp.sizeloc = sizeloc;
return (_IO_FILE *) &new_f->fp._sf._sbf;
}
static int
_IO_wmem_sync (fp)
_IO_FILE* fp;
{
struct _IO_FILE_wmemstream *mp = (struct _IO_FILE_wmemstream *) fp;
if (fp->_wide_data->_IO_write_ptr == fp->_wide_data->_IO_write_end)
{
_IO_wstr_overflow (fp, '\0');
--fp->_wide_data->_IO_write_ptr;
}
else
*fp->_wide_data->_IO_write_ptr = '\0';
*mp->bufloc = fp->_wide_data->_IO_write_base;
*mp->sizeloc = (fp->_wide_data->_IO_write_ptr
- fp->_wide_data->_IO_write_base);
return 0;
}
static void
_IO_wmem_finish (fp, dummy)
_IO_FILE* fp;
int dummy;
{
struct _IO_FILE_wmemstream *mp = (struct _IO_FILE_wmemstream *) fp;
*mp->bufloc = (wchar_t *) realloc (fp->_wide_data->_IO_write_base,
(fp->_wide_data->_IO_write_ptr
- fp->_wide_data->_IO_write_base + 1)
* sizeof (wchar_t));
if (*mp->bufloc != NULL)
{
size_t len = (fp->_wide_data->_IO_write_ptr
- fp->_wide_data->_IO_write_base);
(*mp->bufloc)[len] = '\0';
*mp->sizeloc = len;
fp->_wide_data->_IO_buf_base = NULL;
}
_IO_wstr_finish (fp, 0);
}
|
